WO2017020866A1 - Fastening connector component and structure, removing method, track structure, crankshaft connecting rod mechanism, frame connecting apparatus, and frame connecting method - Google Patents

Abstract

A fastening connector structure comprising a parent (1), an attachment (2), and a fastening connector component. The fastening connector component comprises a threaded rod (5), a fastening nut (6), and a rotation-stopping sleeve (7). The threaded rod (5) runs through the parent (1) and the attachment (2) to be threadedly connected with the fastening nut (6). Provided on the fastening nut (6) are a first rotation-stopping hole (10) and two or more extraction grooves (20) running through the wall of the first rotation-stopping hole (10), the periphery of the fastening nut (6), and the top surface of the wall of the first rotation-stopping hole (10). The rotation-stopping sleeve (7) is mounted on the exterior of the threaded rod (5) and within the first rotation-stopping hole (10) and is axially limited within the first rotation-stopping hole (10). A first rotation-stopping part (11) on the wall of the first rotation-stopping hole (10) of the fastening nut (6) fits a second rotation-stopping part (13) at the periphery of the rotation-stopping sleeve (7) to restrain rotation of the fastening nut (6) relative to the rotation-stopping sleeve (7). A third rotation-stopping part (14) on the wall of a rotation-stopping through hole (12) of the rotation-stopping sleeve (7) fits a fourth rotation-stopping part (19) of the threaded rod (5) to restrain rotation of the rotation-stopping sleeve (7) relative to the threaded rod (5). The threaded rod (5) is non-rotatably mounted together with the fastening nut (6). The fastening connector structure prevents the fastening nut (6) from rotating in reverse and coming loose relative to the threaded rod (5) and allows the rotation-stopping sleeve (7) to be extracted conveniently, quickly, and reliably from the first rotation-stopping hole (10).

Description

Fastening connection assembly and structure, disassembly method, track structure, crankshaft linkage mechanism, bone connecting device and bone connecting method Technical field:

The invention relates to a fastening connection technology of a thread pair mechanically coupling two or more objects; in particular, a mechanical static connection of a crankshaft linkage mechanism, a track structure, an aircraft, a ship, a device, an aerospace equipment, Fastening connection components, fastening connections and connections for mechanical parts on key parts of aircraft, spacecraft, rockets, engines, nuclear reactors, trains, high-speed rail, railroad tracks, steel structures, steel bridges, automobiles, etc. Methods and disassembly methods, the use environment of these mechanical parts is particularly harsh, such as large vibration, high temperature environment, large load, etc., and the connection reliability of the mechanical connection of the thread pair is particularly high.

Background technique

Threaded sub-mechanical static joints between objects have some bolts broken at key parts, safety problems caused by failure of threaded connections and safety accidents, which are often encountered in the world, and are a common problem faced by technicians in the field. Solve the problem that has not been solved. Small bolts, large accidents, and frequent major accidents due to bolt breakage, such as the collapse of the connecting rod bolts of the engine of the automobile; the accident of 1 death and 4 injuries caused by the break of the bolts of Harbin tower crane on April 18, 2009; Taiwan's media reported that the No. 1 reactor of the No. 2 Plant of the Nuclear Power Plant detected 7 anchor bolt breaks and damages that may cause nuclear safety accidents; the guidance of the No. 5 cockpit support system occurred at 16:45 on June 29, 2012 Fatigue fracture of stud bolts caused a serious safety accident in which 6 people were killed and 10 people were injured in the "Space Trek" entertainment project in OCT East Shenzhen. As a representative manufacturer of high-end vehicles, the BMW engine was broken due to technical problems that could not solve the screw break. The loss of power and flameout at the moment of the break led to the recall of 230,000 vehicles (BMW (China) Automobile Trading Co., Ltd., BMW Brilliance Automotive Co., Ltd. decided to recall 230,000 vehicles since June 18, 2014), and the manufacturer suffered huge economic losses. And the loss of goodwill, more serious is the safety of the owner's life and property. Although in many cases, especially in the state of vibration, it is often necessary to regularly repair and reinforce the already tightened fastening joints to prevent the safety of accidental loosening or even looseness of the thread pair. There are many security incidents caused by the failure of the connection, and the examples are numerous.

The reliability of the threaded connection is ensured by the self-locking of the friction of the thread pair and the friction between the contact faces of the thread pair. In general, the connecting thread has a certain self-locking property and does not automatically loosen under static load conditions. However, due to the working conditions of the connection, there are inevitably impacts, vibrations, and load changes. Under these conditions, the friction between the pairs of threads will disappear or decrease instantaneously; at the same time, in the case of high temperature or temperature changes, the material will creep and stress relaxation, and the friction will be reduced. Under multiple actions, the threaded connection is gradually released.

The main reason for the failure of the threaded connection is that the thread is loose due to the reduction of the pre-tightening force. Therefore, the essence of the threaded connection is to prevent the reverse rotation of the thread pair (that is, the reverse between the threaded hole and the external threaded portion). Such as the reverse between the bolt and the nut.

The existing mechanical mechanical anti-loosening methods mainly include mechanical anti-loose methods such as a split pin, a stop pad and a string wire rope. Many of the aircraft are now also using the anti-loose method of the series wire rope.

In order to prevent loose thread connections, people have been working tirelessly.

U.S. Patent No. U.S. Patent No. 1,755,807, filed on Apr. 6, 1 s, filed on Apr. . The lock nut is provided with a threaded through hole and an internal gear-shaped rotation stop hole communicating therewith, and the minimum hole diameter of the rotation stop hole is larger than the diameter of the threaded through hole. The rotation preventing sleeve is provided with a rotation preventing through hole, and the outer circumference of the rotation preventing sleeve is an outer gear shape, and a rotation preventing strip is arranged on the wall of the rotation preventing through hole, and a rotation preventing groove is matched with the rotation preventing strip on the screw. The outer gear-shaped outer circumference of the anti-rotation sleeve and the gear-shaped hole wall of the lock nut rotation-stop hole cooperate with the constraint lock nut to rotate relative to the rotation sleeve, and the rotation sleeve of the rotation sleeve is inserted into the rotation groove of the screw to restrain the screw relative to the rotation sleeve Rotating, so the screw and the lock nut are mounted non-rotatably. In this patent, since the rotation preventing sleeve is completely accommodated in the rotation preventing hole of the lock nut, the rotation preventing sleeve is difficult to be taken out from the rotation preventing hole of the locking nut; and during the use of the screw and the nut, due to the rotation stop The sleeve, the screw and the nut are rusted, the dust enters between the rotation sleeve and the screw and the nut, and the mutual penetration of the rotation sleeve and the screw and the nut causes a large bite force between the rotation sleeve and the screw nut, thereby causing the rotation. The sleeve cannot be removed from between the screw and the nut. If the sleeve is difficult or impossible to remove from between the screw and the nut, it is difficult or impossible to separate the nut from the screw, thus losing the use of the threaded pair for the most basic purpose of easily separating the screw and the nut. Therefore, this screw and nut structure is of little use value.

Patent No. ZL201510198765.5, application publication number is CN 104819197A, application date is April 24, 2015, and publication date is August 6, 2015. The anti-loose nut connection structure includes connecting parts and Through the screw of the connecting piece, the screw on the screw is fastened to the connecting piece, the outer side of the nut is sleeved with a anti-loose ferrule, and the anti-rotation structure between the anti-rotation ferrule and the connecting piece is provided, and the anti-rotation structure includes a corresponding connector The sinking groove provided by the nut is arranged in the sinking groove after the nut is screwed, and the outer ring of the anti-loose ferrule is provided with a chuck, and the inner side wall of the sinking groove is provided with a card slot for the chuck to be inserted; the height of the anti-loose ferrule is less than Shen The height of the groove, the anti-loose ferrule and the nut and the sink are an interference fit. The anti-loose nut connecting structure of the invention has a anti-rotation ferrule and a anti-rotation structure between the anti-loose ferrule and the connecting member, and the inner ring of the anti-loose ferrule is a regular hexagonal structure matched with the nut, preventing The inner ring of the loose ferrule and the nut cannot rotate relative to each other, and the anti-rotation structure prevents the anti-loose ferrule from rotating relative to the connecting member, thereby preventing the nut from loosening after being fastened. The anti-loose nut connecting structure realizes the prevention of the looseness of the nut, but on the one hand, since the height of the anti-loose ferrule is smaller than the height of the sinking groove, and the anti-loose ferrule is in an interference fit with the nut and the sinking groove, the disassembly prevention When loosening the nut connection structure, the anti-loose and anti-loose ferrule cannot be taken out from the sinking groove, and the anti-loose and anti-loose ferrule cannot be taken out, so that the nut and the screw cannot be separated, so that the use of the threaded pair connection is lost. The most basic use of separating the screw and the nut, and thus the structure does not make any sense; on the other hand, the inner side wall of the sinking groove is provided with a card slot for the chuck to be inserted, and the card slot structure cannot be machined. If it is not molded with the connected parts in advance, it needs to be processed by electric spark or the like, so the use cost is particularly high; and if the screw is not stopped, the screw will rotate relative to the lock nut, and only the nut will be stopped. There is no practical significance. The above various reasons will make those skilled in the art believe that the technical solution of the invention has no use value, and greatly hinders the enthusiasm of those skilled in the art to improve the technical solution of the patent.

In the invention patent of the patent number ZL97112246.6, the publication date is 97112246.6, a lock nut is disclosed, which comprises a tool mounting portion and an annular protrusion projecting upwardly coaxially therewith, with a threaded hole penetrating therethrough. This kind of locknut is the HardLock nut, which is the only loose nut in the world. It is the technology that has been developed by the president of Hadlock Industrial Co., Ltd. for nearly 20 years through continuous technical improvement. The results are now more widely used on high-speed rail. When the high-speed rail is in operation, the trains and rails at high speed are constantly in contact, and the vibration generated is very large. The general screws will be shaken and shaken in this vibration. If you don't want to be shocked, you need the screws and nut to get into the buckle, never loose. This requirement seems simple, but it is not easy to satisfy it. The high-speed rail represents China's creation, but it uses Japanese nuts. Therefore, some media have issued a sigh that looks like a gap between Chinese manufacturing and Japanese manufacturing. However, this nut manufacturing process is very complicated, and the manufacturing precision is extremely high. Now, there are product drawings and products. Without the unique technology and know-how of Hardlock, it cannot be manufactured, so it is expensive, at least one. Dozens of dollars; this kind of nut can not be completely loose, but the anti-loose effect in the existing locknut is very good; this nut can not be used after repeated use for dozens of times.

Patent No. ZL201520399393.8 discloses a self-tightening nut and a bolt fastener. The fastener includes a self-tightening nut body, a self-tightening washer and a common bolt; the self-tightening nut body is in contact with the self-tightening washer The surface is a smooth transition spiral surface; the self-tightening nut body is screwed with the common bolt; the bolt fastener includes a self-tightening bolt, a self-tightening washer and a common nut; the ordinary nut is screwed with the self-tightening bolt. The self-tightening nut and the bolt fastener adopt a self-tightening principle, and a self-tightening structure is arranged on the nut or the bolt to make the self-tightening effect after the locking, so that the nut is no longer displaced or loosened. This kind of self-nut, also known as self-tightening nut and never loose nut, and claims that its anti-loose ability exceeds the hardlock nut, has been reported in CCTV. Since this nut is not widely used, its anti-loosening effect cannot be judged.

In the U.S. Patent No. US Pat. No. 1,755,807, filed on Apr. 6, 1 s., the disclosure of the disclosure of the disclosure of the patent application No. s. In the Chinese invention patent on April 24, the technical solution of the rotation sleeve to limit the rotation of the nut was again proposed. After eighty-six years, it was not solved that the bolt and nut could be loosened or the sleeve can be locked with the sleeve. The bolts and nuts are loosened, and the technical problem of removing the bolts and nuts by removing the rotation sleeve from the rotation hole is convenient, fast and reliable. The existing hardlock nut and self-tightening nut which are considered to have good anti-loose effect are not used to prevent the nut from rotating by using the anti-rotation sleeve to prevent the nut from rotating. As soon as a century has passed, the nut has not been prevented from rotating by using the anti-rotation sleeve. To realize the technical application of the bolt and nut to prevent loosening; it can be seen that people have fallen into a technical misunderstanding that although the use of the anti-rotation sleeve can prevent the nut from rotating to realize the bolt and nut to prevent loosening, but the bolt and nut are difficult or impossible to disassemble, the use of the anti-rotation sleeve is formed. The technique of preventing the rotation of the nut to realize the loosening of the bolt and nut has no use value of inertia thinking, thereby preventing the technicians in the art from improving the enthusiasm of the technical solution for preventing the rotation of the nut by using the rotation preventing sleeve to prevent the nut from being loosened.

Summary of the invention

In view of the problems in the prior art, the technical problem to be solved by the present invention is to overcome the prior art that the use of the anti-rotation sleeve limits the rotation of the lock nut relative to the screw to achieve the reverse rotation of the bolt lock nut. The anti-loose technical solution, because the rotary sleeve is difficult or impossible to remove from the first to-stop hole, resulting in the inertial thinking of the fastening connection component, and the use of the anti-rotation sleeve to limit the rotation of the lock nut relative to the screw The screw lock nut can not be rotated relative to each other, so that the screw lock nut is not loosened by the reverse rotation and the rotation sleeve is taken out from the first rotation stop hole quickly, conveniently and reliably, so that the screw and the lock nut are detached. Fast, convenient and reliable fastening assembly and structure, installation and disassembly method, track structure, crankshaft linkage, bone connection device and bone connection method.

A fastening connection assembly comprises a screw and a lock nut; the screw is provided with a resisting portion and a first external thread portion; the resisting portion radially protrudes from the first external thread portion; further comprises a rotation preventing sleeve; the lock nut is provided a threaded through hole and a first rotation stop hole communicating with the threaded through hole, the minimum hole diameter of the first rotation stop hole being larger than the maximum hole diameter of the threaded through hole; the first hole rotation hole is provided with a circumferentially evenly arranged six holes The first axial rotation stop portion; the lock nut is further provided with two or more extraction grooves penetrating through the first detent hole, the lock nut outer circumference and the top surface of the first rotation stop hole wall The outer circumference of the rotation sleeve is provided with a second rotation preventing portion which is matched with the first rotation preventing portion and uniformly arranged in the circumferential direction; the rotation preventing sleeve is provided with an axial rotation preventing through hole, and the hole wall of the rotation preventing through hole is provided There is more than one axial third rotation stop; the rotation sleeve is provided with the outer circumference of the second rotation rotation portion and the hole wall of the first rotation stop hole of the lock nut; and the third rotation stop portion is provided on the screw a fourth rotation stop portion; the threaded through hole of the lock nut is screwed to the first external thread portion, and the fourth rotation end portion of the screw is placed on the locking screw The first rotation stop of the lock nut corresponds to the positional relationship of the fourth rotation stop of the screw; the rotation sleeve is mounted outside the screw provided with the fourth rotation stop and is placed at the first stop In the rotary hole, the rotation preventing sleeve is axially restrained in the first rotation preventing hole; the first rotation stop portion and the second rotation rotation portion cooperate to restrain the rotation of the lock nut relative to the rotation sleeve, and the third rotation portion and the fourth rotation portion The rotation stop portion cooperates with the restraining rotation sleeve to rotate relative to the screw, and the screw and the lock nut are non-rotatably mounted together.

As a modification of the first aspect, a take-out space that communicates with the take-out groove is provided between the side of the stop sleeve facing the bottom surface of the first rotation stop hole and the first rotation stop hole.

As an improvement of the second embodiment, on one end surface of the rotation sleeve, three or more support portions on the same side axially projecting the end faces of the rotation sleeve are provided; the support portion faces the side of the bottom surface of the first rotation stop hole A take-out space that communicates with the take-out groove is formed at the bottom of the first rotation stop hole. Since the support portion for forming the take-out space is easily formed on the rotation preventing sleeve, it can be stamped together with the rotation preventing sleeve, and thus the cost is low.

As an improvement of the second solution, the depth of the take-out groove is greater than the depth of the first rotation stop hole, and the take-out groove extends inwardly into the first rotation stop hole and communicates with the bottom surface of the first rotation stop hole, and the rotation stop sleeve faces the first end. One side of the bottom surface of the rotary hole forms a take-out space with the take-out groove that projects into the first rotation stop hole. The take-out space of such a structure, the take-out space and the take-out groove are forged up together with the blank of the lock nut, and the cost is low.

As a modification of the first aspect, a rotation stop shaft that cooperates with the rotation preventing through hole is provided on an end surface of the first external thread portion facing away from the abutting portion, and the fourth rotation preventing portion is disposed at an outer circumference of the rotation preventing shaft; the maximum outer diameter of the rotation preventing shaft is smaller than or It is equal to the thread bottom diameter of the first external thread portion; the rotation preventing shaft is disposed in the first rotation preventing hole, and the rotation preventing sleeve is installed outside the rotation preventing shaft and placed in the first rotation preventing hole. The outer circumference of the rotation preventing shaft is an outer gear-shaped structure, or a spline-shaped structure, or a regular polygonal hole; the hole wall of the rotation preventing through hole of the rotation preventing sleeve is an inner gear-shaped hole that cooperates with the outer circumference of the rotation preventing shaft of the outer gear-shaped structure, Or a spline-shaped hole that fits the outer circumference of the rotation-recessing shaft of the spline-shaped structure, or a regular-polygon hole that fits the outer circumference of the rotation-recessing shaft of the regular polygonal structure, or two that fits the outer circumference of the rotation-recessing shaft of the regular polygonal structure The intersecting structure of more than the same regular polygonal holes and the degree of rotation of each adjacent two regular polygonal holes is 360° / the number of regular polygonal holes / the number of regular polygonal holes, so as to further ensure the connection of the bolt and the lock nut Preload. The fourth rotation stop portion is disposed on the outer circumference of the rotation preventing shaft, and the third rotation stop portion and the fourth rotation rotation portion are equally divided as much as possible in the case of satisfying the processing and the force, so as to ensure the locking of the screw and the lock nut. In the case of force, the screw is finely adjusted, and the positional relationship between the first rotation stop portion and the fourth rotation rotation portion on the screw is more easily matched, and the installation of the rotation sleeve is satisfied.

As a modification of the first solution, the third rotation stop portion is one or more axial rotation preventing bars protruding from the hole wall of the rotation preventing through hole; the fourth rotation preventing portion is disposed on the first external thread portion and the rotation preventing bar a matching axial rotation stop groove; the rotation stop groove is a roll-formed groove, which is rolled and formed when the first external thread portion of the screw is clamped; the rotation stop bar on the rotation prevention sleeve extends into the rotation of the screw The groove restrains the rotation sleeve from rotating relative to the screw. The fourth rotation stop portion is a rotation preventing groove provided on one end of the screw provided with the first external thread portion, and the rotation preventing groove on the screw is simultaneously rolled and rolled when the first external thread portion is clamped, and the screw of the structure is The universal standard part screw has the same cost, the cost is particularly low, and the formed rotation groove is not deformed and standard, and the thread of the first external thread portion is also standard.

As an improvement of the first embodiment, the hole wall of the through hole is formed by a circular arc surface and a rotation stop plane connecting the circular arc surface; and the third rotation stop portion is a rotation preventing sleeve on the hole wall of the through hole; The four rotation stop portion is a screw rotation stop plane disposed on the first external thread portion and engaging with the rotation preventing plane of the rotation preventing sleeve; the rotation preventing plane of the rotation preventing sleeve and the screw rotation preventing plane are matched with the rotation preventing sleeve and the screw rotation turn. This kind of screw has good strength and low processing cost.

As a modification of the first solution, the fourth rotation stop portion is one or more axial rotation preventing grooves provided on the first external thread portion, and the rotation preventing groove is a cutting tail groove, and the cross section is V-shaped, from the tail end of the screw to the screw The resisting portion is gradually smaller; the third rotation preventing portion is a rotation preventing bar protruding from the hole wall of the rotation preventing through hole, and the rotation preventing bar forms a concave-convex fit with the rotation preventing groove. The fourth rotation stop portion is a tail-type rotation stop groove, and the corresponding tail-cutting process can be used to form the cutting tail groove, and the existing tail cutting screw can also be used, and the cost is low.

As an improvement of the first solution, the fastening connection assembly further includes a rotation preventing sleeve limiting member; the rotation preventing sleeve limiting member is a snap ring or a buckle cover for an elastic buckle provided with two or more inner buckles; the snap ring or the buckle cover Installed on the screw or on the lock nut to axially limit the side of the sleeve. The stopper sleeve is a buckle cover, and the buckle cover not only can axially limit the side of the rotation sleeve, but also has the function of a cover, so that the rotation sleeve and the screw are not exposed to the air, thereby greatly increasing the rotation sleeve And the life of the screw, the use of safer, more beautiful appearance, the buckle cover can also play a decorative role. The stop sleeve limiter is a snap ring or a buckle cover. In the case where the threaded connection is prone to failure, the axial limit of the snap ring or the buckle cover is more reliable. The card slot is arranged on the screw, and the card slot is formed together and then threaded when the forging screw head is formed into a billet. The screw of this structure is similar to the cost of the common standard screw, and the cost is reduced; or the thread is threaded and then milled out. Stop the groove.

As an improvement of the solution 9, the stop sleeve limit member is a buckle cover of an elastic buckle provided with two or more inner buckles, and the cover cover is provided with a receiving space for accommodating the lock nut; the outer circumference of the lock nut is provided There is a resisting portion that cooperates with the elastic buckle; the elastic buckle is buckled inwardly on the resisting portion of the lock nut to axially limit the side of the retaining sleeve, and the lock nut is received in the receiving space of the buckle cover. The fastening connection assembly of the structure, on the one hand, in the case where the threaded connection is prone to failure, the axial limit of the buckle cover is more reliable; on the other hand, the resisting portion is disposed on the outer circumference of the lock nut, and the resisting portion is formed when the lock nut blank is formed. Together with the upsetting, there is no need to form a resisting groove on the lock nut or the screw to reduce the cost. The buckle cover is stamped and formed from sheet metal, which is low in cost. The buckle cover can also cover the screw, the lock nut and the rotation stop sleeve, thereby greatly reducing the rust of the screw, the lock nut and the rotation stop sleeve exposed to the air.

As an improvement of the solution 9, the anti-rotation sleeve limiting member is an elastic resisting cap; the resisting cap is provided with a blind hole that cooperates with the first external threaded portion of the screw, and a ring-shaped annular shape is formed on the hole wall of the blind hole. An elastic resisting ring; the rotation sleeve is mounted in the first rotation stop hole of the lock nut and the first external thread portion of the screw provided with the fourth rotation stop portion, and the resisting cap is elastically deformed to make the resistance ring interference fit The sleeve is axially restrained on one side of the outer sleeve of the screw sleeve; the resisting cap covers the first rotation preventing hole of the lock nut. The resisting cap is used as the stopper sleeve limiting member, and the resisting cap can be a rubber member. On the one hand, the resisting cap has the function of a sealing member to prevent dust, water, etc. from entering between the rotation preventing sleeve, the screw and the lock nut, and preventing rust. On the other hand, the resisting cap also has a decorative effect, and the appearance is beautiful, and is particularly suitable for occasions where the force is not particularly large and the appearance is high, such as used in scissors and furniture.

The improvement of the first to eleventh embodiments further includes an expansion member with two or more flaps and a driving lock nut; a first driving taper surface is disposed on an outer circumference of the resisting portion of the screw; and a second driving cone is disposed on an outer circumference of the driving lock nut. surface;

The expansion member includes an expansion member body, an expansion sleeve abutting portion radially protruding on an outer circumference of the expansion member body, a first expansion tapered surface disposed on the inner circumference of the expansion member body and the first driving cone surface, and a second driving a second expansion taper surface of the tapered surface; the expansion members are held together to form an expansion sleeve; the through hole formed by the expansion sleeve composed of the expansion members that are held together is engaged with the first external thread portion of the screw; and the corresponding expansion on the expansion sleeve The sleeve is circumferentially distributed to form a broken independent ring; the first external thread portion of the screw is sequentially threadedly connected to the drive lock nut and the lock nut through the expansion sleeve.

A fastening connection structure, the fastening connection structure comprises a fastening connection assembly, a base body and an attachment body; the base body is provided with a through hole that cooperates with the first external thread portion of the screw, and the attachment body is provided with the first outer portion of the screw a through hole in which the threaded portion is fitted;

The first external thread portion of the screw passes through the through hole in the female body, and the through hole on the attached body is screwed with the lock nut, and the screw and the lock nut fasten the mother body and the attachment body together; the fourth rotation is provided The screw of the portion is placed in the first rotation stop hole of the lock nut, and the first rotation stop portion of the lock nut corresponds to the positional relationship of the fourth rotation stop portion of the screw; the rotation stop sleeve is mounted on the first rotation stop of the lock nut Outside the hole and the screw provided with the fourth rotation stop, the rotation sleeve is axially restrained in the first rotation stop; the first rotation stop of the lock nut cooperates with the second rotation stop of the rotation sleeve The lock nut rotates relative to the rotation sleeve, and the third rotation stop of the rotation sleeve cooperates with the fourth rotation stop of the screw to rotate the support screw relative to the rotation sleeve, and the screw and the lock nut are non-rotatably mounted together.

The fastening structure of the expansion structure of the above solution is particularly suitable for the case where the hole in the mother body is a blind hole, the screw cannot pass through the mother body, and the metal material which cannot be tapped on the mother body, and the mother body The material is soft, the threaded connection is easy to slide, and the mother body is made of aluminum. The expansion fastening assembly further includes a driving lock nut. The screw is installed on the base body through the structure of the expansion sleeve before installation, and then the attachment body is installed to facilitate the installation of the screw on the mother body. An expansion sleeve abutting portion is arranged on the expansion sleeve, and an abutting groove is arranged on the hole wall of the mother body, and the expansion sleeve resisting portion extends into the abutting groove of the pre-embedded sleeve to form a snap-fit by the surface and the surface, so that the expansion sleeve and the expansion sleeve The connection force of the mother body is mainly the mutual abutting force between the wedge-shaped resisting and the resisting groove, instead of the pre-tightening static friction force of the threaded connection or the expansion static friction force of the expansion screw. On the expansion member The resisting portion can be a resisting portion. The abutting portion on the expansion member may also be a plurality of abutting portions, and the shape of the single abutting portion on the cross section passing through the axis is a pointed shape or a trapezoidal shape or an arc shape; the shape of the resisting groove on the female body on the cross section passing through the axis is resistant to The matching portion has a pointed shape or a trapezoidal shape or an arc shape; the resisting portion and the abutting groove are in contact with the two inclined surface faces of the tapered shape or the two inclined faces of the trapezoid, or are contacted by the curved surface. This expansion fastening structure can withstand a very high connection force. Therefore, it is possible to cause connection failure in a large load, particularly in an axial load, a large vibration, and a high temperature. Corresponding to the fastening structure using the expansion structure, the lock nut connected with the screw, the rotation sleeve installed in the first rotation stop hole of the lock nut, and the structure for limiting the rotation sleeve and the fastening not the expansion structure The connection components are the same and will not be described again.

A fastening method for fastening a connection structure, the fastening connection structure comprises a fastening connection assembly, a base body and an attachment body; the base body is provided with a hole for cooperating with the first external thread portion of the screw, and the attachment body is provided with a screw a through hole engaged with the external threaded portion; a take-out space communicating with the take-out groove between the side of the stop sleeve facing the bottom surface of the first rotation stop hole and the first rotation stop hole; the first external thread portion of the screw passing through The through hole on the mother body and the through hole on the attached body are screwed with the lock nut, the screw and the lock nut fasten the mother body and the attachment body together; the screw provided with the fourth rotation stop portion is placed on the lock nut The first rotation stop of the lock nut corresponds to the positional relationship of the fourth rotation stop of the screw; the rotation sleeve is mounted outside the screw provided with the fourth rotation stop and is placed at the first rotation stop In the hole; the rotation sleeve is axially restrained in the outer portion of the screw provided with the fourth rotation preventing portion and the first rotation preventing hole; the first rotation stop portion of the lock nut cooperates with the second rotation end portion of the rotation preventing sleeve The lock nut rotates relative to the rotation sleeve, and the third rotation stop of the rotation sleeve and the fourth rotation end of the screw cooperate with the constraint screw Rotation of the detent sleeve, with the screw lock nut non-rotatably mounted together; Removing the fastening structure comprises the steps of:

The rotation sleeve is taken out from the first rotation preventing hole by a clamp: the clamp includes a left caliper body and a right caliper body pivotally coupled together, and is convex toward the right caliper body at the clamping end portion of the left caliper body. a clamping hook is provided, and a clamping hook is protruded toward the left caliper body at the clamping end portion of the right caliper body, a clamping end portion of the left caliper body, a clamping end of the clamping body, a clamping end portion and a clip of the right caliper body The hook is matched with the take-out slot, and the clamping hook of the left caliper body and the clamping hook of the right caliper body cooperate with the take-out space; the clamp is opened, and the clamping end portion of the left caliper body and the clamping hook extend into a take-out slot The clamping hook extends radially into the take-out space between the rotation preventing sleeve and the bottom surface of the first rotation preventing hole, and the clamping end portion of the right caliper body and the clamping hook extend into the other extraction groove and the clamping hook diameter Extending into the take-out space, and then clamping the clamp, the left and right grip ends of the clamp clamp the lock sleeve, the clamp hook of the left clamp body and the clamp hook of the right clamp body are away from the rotation sleeve The take-out direction resists the rotation sleeve, and the clamp takes the rotation sleeve out of the first rotation hole; and then separates the lock nut from the screw.

The utility model relates to a track structure, comprising a fastening connection component, a backing plate for carrying a track, a rail underlay, a guide rail, an insulating block and a spring strip; the fastening connection assembly further comprises a rotation preventing sleeve limiting member; the screw is a T-shaped screw ;

a bottom surface of the backing plate is provided with a rotation preventing groove which communicates with the through hole and cooperates with the resisting portion; and a through hole which cooperates with the first external threaded portion of the screw is provided on both sides of the backing plate, and is provided on the bottom surface of the backing plate a through-rotating groove communicating with the through hole and engaging with the resisting portion, the through hole adjacent to each side between the corresponding two through holes is provided with a resisting convex portion; the two outer sides of the through holes on opposite sides of the backing plate are opposite There is a spring support portion, and the through hole on the pad plate is disposed between the resisting convex portion on the same side and the elastic bar support portion;

The pad is mounted on the foundation, the under-rail pad is mounted on the pad, the rail is mounted on the under-rail pad, the under-rail pad and the rail are placed between the two resisting projections of the pad; the insulating blocks are respectively mounted on the rail Between the two sides of the pad and the two resisting protrusions of the pad, the two sides of the pad resist the convex portion to limit the insulating blocks on both sides, and the two insulating blocks limit the two sides and the top surface of the guide rail;

The resisting portion of the screw passes through the through hole of the backing plate from the top to the bottom and is rotatably mounted in the rotation preventing groove; the first external thread portion of the screw is screwed upward through the elastic bar and the lock nut, and the elastic bar is supported at the corresponding The insulating block and the spring supporting portion are arranged; or the two outer sides of the through holes on the two sides of the backing plate are provided with a gauge baffle, and the through holes on the backing plate are placed on the same side of the resisting convex portion and the gauge baffle The first external thread portion is threaded upwardly through the elastic strip and the lock nut, and the elastic strip is supported on the corresponding insulating block and the gauge baffle;

The screw and the lock nut fasten and fasten the pad, the under-bolt plate, the guide rail, the insulating block and the elastic strip; the screw provided with the fourth rotation-stopping portion is placed in the first rotation-stop hole of the lock nut, and the lock The first rotation stop portion of the tightening nut corresponds to the positional relationship of the fourth rotation stop portion of the screw; the resisting portion and the rotation preventing groove cooperate to restrain the rotation of the screw relative to the backing plate;

The rotation sleeve is installed outside the screw provided with the fourth rotation stop portion and placed in the first rotation stop hole; the rotation sleeve is axially restrained outside the screw provided with the fourth rotation stop portion and the first rotation stop hole The first rotation stop of the lock nut cooperates with the second rotation stop of the rotation sleeve to restrain the rotation of the lock nut relative to the rotation sleeve, and the third rotation stop of the rotation sleeve cooperates with the fourth rotation end of the screw The screw rotates relative to the rotation sleeve, and the screw and the lock nut are non-rotatably mounted together.

The rail structure of the fastening joint assembly of the present invention, the elastic strip and the backing plate fixed together by the fastening joint assembly, because the retaining sleeve restrains the lock nut from rotating relative to the screw, even if the elastic strip is subjected to a large force, Or the track structure is in a vibrating environment, the thread connection is also very reliable, and the threaded connection will not be broken due to the loosening of the lock nut relative to the screw. This ensures that the spring bar reliably presses the insulating block and the insulating block reliably presses the guide rail. The guide rails are reliably mounted with the shim to prevent accidents.

A track structure comprising a fastening connection assembly, a pre-embedded sleeve, a backing plate for carrying the rail; a through hole matched with the first external threaded portion of the screw on both sides of the backing plate; the pre-embedded sleeve The hole is embedded in the blind hole on the ground corresponding to the through hole of the pad, and the hole is provided in the pre-embedded sleeve, and the annular wall of the pre-embedded sleeve is provided with an annular resistance against the expansion sleeve abutting portion. groove;

The first external thread portion of the screw is threadedly connected to the driving lock nut through the expansion sleeve, and the resisting portion of the screw and the first driving taper surface, the expansion sleeve and the driving lock nut are installed in the hole in the pre-embedded sleeve; In the unexpanded state, the first expansion of the expansion sleeve is hooped on the first driving cone surface of the screw, and the second expansion cone of the expansion sleeve is huged on the second driving cone surface of the driving lock nut; The driving cone surface slides relative to the first expansion cone surface, and the second driving cone surface expands relative to the second expansion cone surface to drive the expansion sleeve. When the expansion sleeve is fully expanded, the expansion sleeve resisting portion extends into the resisting groove of the pre-embedded sleeve. The inner passage surface and the surface resist each other to form a snap, and the expansion sleeve resisting portion on the expansion sleeve is axially resisted by the upper resisting groove of the pre-embedded sleeve, and the screw, the expansion sleeve, the drive lock nut and the pre-embedded sleeve are fixedly connected to each other. Together, the abutting portion of the screw is axially resisted by the expansion sleeve;

The first external thread portion of the screw is threadedly connected to the lock nut through a through hole in the backing plate, the lock nut axially resists the backing plate, and the screw, the expansion sleeve and the lock nut are fastened to the backing plate and the pre-embedded sleeve connected.

By adopting the track structure of the fastening joint assembly of the invention, the backing plate is fixed in the pre-embedded sleeve of the foundation by the fastening joint assembly, and the track nut is not vibrated even if the lock sleeve restrains the lock nut from rotating relative to the screw. The environment and the threaded connection are also very reliable. The threaded connection will not be broken due to the loosening of the lock nut relative to the screw. This ensures that the backing plate is reliably installed with the foundation's pre-embedded casing to prevent accidents.

A crankshaft linkage mechanism comprises a fastening connection assembly, a crankshaft, a connecting rod set and a fastening connection assembly; the connecting rod set comprises a connecting rod body, a connecting rod big head cover and a connecting rod big head bearing bush; the connecting rod body comprises a connecting rod big head and a small connecting rod, a through hole is arranged on the big end of the connecting rod; a through hole is arranged on the big head cover of the connecting rod; the fastening connecting component further comprises a stop sleeve limiting piece;

The connecting rod big head bush is wrapped outside the crankshaft, and the connecting rod big head and the connecting rod big head cover are wrapped outside the connecting rod big head bush;

The screw has one end of the first external threaded portion passing through the through hole on the big end of the connecting rod, and the through hole on the big head cover of the connecting rod is screwed with the locking nut, and the screw and the locking nut tightly close the connecting rod body and the connecting rod Solidally coupled together; a screw provided with a fourth rotation stop is placed in the first rotation stop hole of the lock nut, and the first rotation stop of the lock nut corresponds to the positional relationship of the fourth rotation stop of the screw;

The rotation preventing sleeve is installed outside the screw provided with the fourth rotation preventing portion and placed in the first rotation preventing hole, and the rotation preventing sleeve limiting member is mounted with the screw or is mounted with the connecting rod big head cover to the rotation preventing sleeve The lateral axial limit; the first rotation stop of the lock nut cooperates with the second rotation stop of the rotation sleeve to restrain the rotation of the lock nut relative to the rotation sleeve, and the third rotation stop of the rotation sleeve and the fourth rotation of the screw The rotation stop portion cooperates with the restraining screw to rotate relative to the rotation sleeve, and the screw and the lock nut are non-rotatably mounted together.

The crankshaft link mechanism of such a structure, the link body and the connecting rod head cover fixed together by the fastening connector, because the link body and the lock nut have no relative rotation, even if the link body is subjected to a large force, or the crankshaft The connecting rod is in a vibrating environment, and the connection between the screw and the lock nut is also reliable. The threaded connection is not broken due to the reversal of the lock nut with respect to the screw, thus ensuring that the connecting rod body and the connecting rod big head cover are reliably mounted together. Prevent accidents.

A bone connecting device includes a fastening connection assembly and a connecting member; the fastening connecting assembly further comprises a rotation preventing sleeve limiting member;

Providing two or more through holes on the connecting member that cooperate with the first external threaded portion of the screw; the through hole on one connecting member corresponds to a screw, a lock nut, a rotation preventing sleeve, a rotation preventing sleeve limiting member; The first external thread portion is screwed into the threaded through hole of the lock nut through a corresponding through hole in the connecting member, and the screw provided with the fourth rotation preventing portion is placed in the first rotation preventing hole of the lock nut, the lock nut The first rotation stop portion corresponds to the positional relationship of the fourth rotation stop portion of the screw; the rotation prevention sleeve is installed outside the screw provided with the fourth rotation stop portion and placed in the first rotation stop hole; The rotation of the rotation sleeve is axially fixed on the screw or the connecting member; the third rotation stop portion and the fourth rotation rotation portion cooperate to restrain the rotation of the rotation sleeve relative to the screw, and the first rotation stop portion and the second rotation rotation portion cooperate with the constraint lock The tightening nut rotates relative to the rotation sleeve, and the screw and the lock nut are non-rotatably mounted together.

A bone joining method comprising the following steps:

The first external thread portion of one screw passes through the through hole in the connecting member, and one broken bone is screwed to the lock nut, and the screw fastens the broken bone to the connecting member; the first external thread of the other screw Passing through another through hole in the connecting member, and the other broken bone is screwed to the lock nut, and the screw fastens the other broken bone to the connecting member;

a screw provided with a fourth rotation stop portion is disposed in the corresponding first rotation stop hole, and a fourth rotation stop portion of the screw corresponds to a positional relationship of the first rotation stop portion of the corresponding first rotation stop hole;

Mounting the anti-rotation sleeve outside the screw provided with the fourth rotation-stopping portion and placing it in the first rotation-stopping hole; mounting the anti-rotation sleeve limiting member on the screw or the connecting member to axially limit the rotation-proof sleeve;

The third rotation stop portion and the fourth rotation rotation portion cooperate to restrain the rotation sleeve from rotating relative to the screw, and the first rotation stop portion and the second rotation rotation portion cooperate to restrain the rotation of the lock nut relative to the rotation sleeve, and the screw and the lock nut are non-rotatably Installed together.

The connecting piece is used to connect the two broken bones. Since the locking sleeve restrains the locking nut from rotating relative to the screw, the connecting piece connects the two broken bones very reliably, and the connection is not loosened, displaced, etc. due to frequent movement of the bone. The side effects of the pain caused by the device are greatly reduced. For some older patients, after the fracture is healed, the bone connecting device can be removed without the second injury.

The beneficial effects of the invention are:

It is a technical problem that has been solved for a long time and has not been completely solved, in order to prevent the thread from being reversed and loosened, and to maintain the convenient, fast and reliable detachability of the mechanical thread connection.

The invention restricts the rotation of the screw relative to the mother body and the attached body by the rotation stop resisting portion of the screw, and the rotation preventing sleeve limits the rotation of the lock nut relative to the screw, so that the screw and the lock nut are non-rotatably mounted on the mother body and the attached body to prevent the fastening. The lock nut is loosened relative to the screw during use of the connecting assembly. The gap sleeve and the first rotation preventing hole and the lock nut generally have a clearance fit, which facilitates the installation and removal of the rotation sleeve.

In order to screw the lock nut to the screw thread, the positional relationship between the first rotation stop portion of the first rotation stop hole and the fourth rotation stop portion of the screw can correspond, and the second rotation of the rotation sleeve is noted when designing the rotation sleeve. The positional relationship between the portion and the third rotation stop portion, that is, the second rotation stop portion and the third rotation stop portion have a corresponding rule.

Two take-out slots are provided on the wall of the first anti-rotation hole, so that the removal tool, such as the clamp, can be taken out from the take-out slot and the take-out space to take out the anti-rotation sleeve, and is removed by the disassembly tool when the fastening assembly is removed. The anti-rotation sleeve can remove the anti-rotation sleeve from the first anti-rotation hole very labor-saving, fast, fast and reliable.

A take-out space is arranged between the anti-rotation sleeve and the first rotation-stopping hole, and the removal tool protrudes into the take-out space when the rotation-stopping sleeve is taken out, so that not only the clamping friction force of the clamping tool and the rotation-proof sleeve is clamped The take-over sleeve is taken out, and the resisting force of the dismantling tool against the take-out direction is increased, so that the anti-rotation sleeve can be taken out very reliably. The take-out groove and the take-out space are added between the anti-rotation sleeve and the first rotation-stopping hole, and are particularly suitable for the case where the thickness of the rotation-proof sleeve wall and a large clamping force are required to take out the rotation-proof sleeve from the rotation-stop hole; If the structure of the fastening component is not increased between the rotation sleeve and the first rotation hole, it is difficult or even impossible to remove the rotation sleeve from the first rotation hole; With the rust, dust, etc. entering between the first rotation stop hole and the long-term use, the rotation sleeve and the first rotation preventing hole are engaged, and the rotation preventing sleeve is completely stuck in the first rotation preventing hole, by means of the disassembly tool, The anti-rotation sleeve of the fastening connection assembly of this construction can also be reliably removed from the first anti-rotation hole.

After the screw is screwed to the lock nut, the first rotation stop portion and the second rotation stop portion cooperate to restrain the lock nut from rotating relative to the rotation sleeve, and the third rotation stop portion and the fourth rotation rotation portion cooperate to restrain the rotation of the screw relative to the rotation sleeve So that the screw and the lock nut can not be rotated, and the screw and the lock nut will not be loosened due to the reverse rotation, so that the screw and the lock nut are kept in the originally required locking position, the thread of the screw and the lock nut. The clamping force of the connection is basically unchanged during the use; even if the ordinary screw lock nut is used for connection, in the harsh environment such as severe vibration and high temperature, the clamping force of the screw connection of the screw and the lock nut is basically in use. No change; therefore, the best locking effect is achieved, which can effectively avoid the screw connection of the screw and the lock nut.

The outer circumference of the rotation preventing sleeve may be a spline shape or a regular polygonal shape or an outer gear shape; the hole wall of the first rotation preventing hole is an inner gear shape hole that fits the outer circumference of the rotation preventing sleeve of the outer gear type structure, or is a spline shape The spline-shaped hole of the outer circumference of the structural anti-rotation sleeve, or the regular polygonal hole that cooperates with the regular polygonal structure rotation preventing sleeve, or the intersection of two or more identical regular polygonal holes that cooperate with the regular polygonal structure rotation preventing sleeve The degree of rotation of each two adjacent regular polygonal holes is 360° / the number of regular polygonal hole sides / the number of regular polygonal holes. Under the premise of satisfying the processing and use, the more the plurality of moldings cooperate with the first rotation stop portion and the second rotation rotation portion, so that the screw connection of the screw and the lock nut is optimally locked, in order to install the rotation stop. The smaller the angle when the lock nut is finely adjusted, the corresponding position of the first rotation stop of the lock nut and the fourth rotation stop of the screw can be matched, and the installation of the rotation sleeve is satisfied. The smaller the angle of the fine adjustment lock nut, the better the locking effect between the screw and the lock nut, and the locking force between the screw and the lock nut is prevented from being too large or too small.

DRAWINGS

1 is a perspective view of the fastening joint assembly of Embodiment 1.

2 is a perspective exploded view of the fastening joint assembly of Embodiment 1.

Fig. 3 is a cross-sectional, schematic cross-sectional view showing the fastening structure of the fastening screw of the first embodiment.

4 is a perspective exploded view of the fastening structure of Embodiment 1.

5 is a perspective exploded view of the fastening assembly of Embodiment 2.

6 is a perspective exploded view of the fastening connection assembly of Embodiment 3.

Fig. 7 is a cross-sectional, schematic, cross-sectional view showing the fastening structure of the fastening screw of the third embodiment.

8 is a perspective exploded view of the fastening connection assembly of Embodiment 4.

9 is a perspective exploded view of the fastening joint assembly of Embodiment 5.

Figure 10 is a cross-sectional, schematic cross-sectional view showing the fastening structure of the fastening screw of the embodiment 5 taken along the axis of the screw.

Figure 11 is a perspective view of the buckle cover of the fifth embodiment.

Figure 12 is a perspective exploded view of the fastening assembly of the embodiment 6.

Figure 13 is a perspective view of the buckle cover of the sixth embodiment.

Figure 14 is a cross-sectional, schematic cross-sectional view showing the fastening structure of the fastening screw of the embodiment 6 taken along the axis of the screw.

Figure 15 is a perspective exploded view of the fastening assembly of Embodiment 7.

Figure 16 is a cross-sectional, schematic cross-sectional view showing the fastening structure of the fastening screw of the embodiment 7 taken along the axis of the screw.

Figure 17 is a perspective view of the buckle cover of the seventh embodiment.

Figure 18 is a perspective exploded view of the fastening assembly of the eighth embodiment.

Figure 19 is a cross-sectional, schematic cross-sectional view showing the fastening structure of the fastening screw of the embodiment 9 taken along the axis of the screw.

20 is a perspective exploded view of the fastening joint assembly of Embodiment 9.

21 is a perspective exploded view of the fastening connection assembly of Embodiment 10.

Figure 22 is a perspective exploded view showing the fastening structure of the embodiment 10 and the clamp mounted together.

Figure 23 is a cross-sectional view showing the fastening structure of the embodiment 10 and the clamp mounted with the axis of the screw.

Figure 24 is a perspective exploded view showing the fastening structure of the embodiment 11 and the clamp mounted together.

Figure 25 is a front elevational view showing the fastening structure of the embodiment 25.

Figure 26 is a cross-sectional view showing the A-A of Figure 25.

Figure 27 is a perspective exploded view of the fastening joint assembly of Embodiment 25.

28 is a perspective exploded view of the track structure of Embodiment 13.

Figure 29 is a perspective exploded view showing the fastening structure of the embodiment 13.

Figure 30 is a cross-sectional, schematic cross-sectional view showing the track structure of the embodiment 13 taken along the axis of the two screws.

Figure 31 is a perspective view showing the bone connecting device and the bone of the fifteenth embodiment.

Figure 32 is a cross-sectional, schematic cross-sectional view showing the bone connecting device of Example 15 and the bone passing through the two screws.

Figure 33 is a perspective view showing the rotation preventing sleeve of the sixteenth embodiment.

Figure 34 is a perspective view showing the crankshaft link mechanism of the seventeenth embodiment.

Fig. 35 is a schematic cross-sectional view showing the crankshaft link mechanism of the seventeenth embodiment taken along the axis of the two screws.

Figure 36 is a cross-sectional view showing the crankshaft link mechanism of the embodiment 18 taken along the axis of the two screws.

detailed description

Example 1

As shown in FIG. 1 to FIG. 4, a fastening connection structure includes a fastening connection assembly, a mother body 1, and an attachment body 2. The mother body 1 is provided with a through hole 3, and the attachment body 2 is provided with a through hole 4.

The fastening connection assembly comprises a screw 5, a lock nut 6, a rotation preventing sleeve 7, and a rotation preventing sleeve limiting member. The stop sleeve limit member is abutting the lock nut 8.

The lock nut 6 is provided with a threaded through hole 9 and a first rotation stop hole 10 communicating with the threaded through hole 9. The minimum hole diameter of the first rotation stop hole 10 is larger than the diameter of the threaded through hole 9. A first circumferential rotation preventing portion 11 is provided on the wall of the first rotation preventing hole 10. The hole wall of the first rotation stop hole 10 is an intersecting structure in which two identical hexagonal holes of the same structure are rotated by 30°, and twelve pointed grooves are formed on the hole wall of the first rotation stop hole 10, each of which is concave. The groove is formed by two intersecting planes of a regular hexagonal hole, and a pointed groove forms a first torsion portion 11. The outer circumference of the lock nut 6 is a regular hexagon. Two take-out slots 20 communicating with the first anti-rotation hole 10 are provided in the wall of the first rotation preventing hole 10 of the lock nut 6, and the depth of the take-out groove 20 is greater than the depth of the first anti-rotation hole 10, and the take-out groove is taken out. The tire 20 extends radially inwardly into the first rotation stop hole 10 to communicate with the bottom surface of the first rotation stop hole 10. The rotation preventing sleeve 7 forms a take-out space with the take-out groove 20 on the bottom surface of the first rotation stop hole 10.

The rotation preventing sleeve 7 is provided with an axial rotation preventing through hole 12, and the outer circumference of the rotation preventing sleeve 7 is provided with a second rotation preventing portion 13 which is engaged with the first rotation preventing portion 11 and circumferentially arranged, and the rotation preventing through hole 12 is A third rotation stop portion 14 circumferentially arranged is provided on the wall of the hole. The outer circumference of the rotation preventing sleeve 7 is a hexagonal shape with a single regular hexagonal hole of the lock nut 6, and the six planes of the outer circumference of the rotation preventing sleeve 7 form six second rotation preventing portions 13 which are circumferentially arranged. The wall of the hole of the through hole 12 is formed with a spline-shaped hole, and a groove on the wall of the hole of the through hole 12 forms a third rotation preventing portion 14. The axial length of the first rotation stop portion 11 of the first rotation stop hole 10 is larger than the axial length of the second rotation rotation portion 13 of the rotation preventing sleeve 7.

The screw 5 is sequentially provided with a resisting portion 15, a first male screw portion 16 that engages with the threaded through hole 9 of the lock nut 6, a rotation preventing shaft 17, and an external thread portion 18 that engages with the lock nut 8. The resisting portion 15 radially protrudes from the first male thread portion 16. A fourth rotation preventing portion 19 that is circumferentially distributed with the third rotation preventing portion 14 is provided on the outer circumference of the rotation preventing shaft 17, and the outer circumference of the rotation preventing shaft 17 is fitted with the hole wall of the spline-shaped rotation preventing through hole 12 Key shape. An axial rib on the outer circumference of the rotation preventing shaft 17 forms a fourth rotation preventing portion 19 that cooperates with the groove-shaped third rotation preventing portion 14. The maximum outer diameter of the rotation preventing shaft 17 is smaller than or equal to the thread bottom diameter of the first male thread portion 16, which is larger than the maximum outer diameter of the external thread portion 18.

The first external thread portion 16 of the screw 5 is threadedly connected to the lock nut 6 through the through hole 3 in the through hole 3 of the base body 1 and the through hole 4 of the attachment body 2. The resisting portion 15 axially resists the base body 1 and the lock nut 6 axially resists Attachment 2, screw 5 and lock nut 6 fasten the mother body 1 and the attachment body 2 together; the rotation shaft 17 of the screw 5 is placed in the first rotation stop hole 10 of the lock nut 6, the lock nut 6 The first rotation preventing portion 11 corresponds to the positional relationship of the fourth rotation preventing portion 19 of the screw 5. The rotation sleeve 7 is mounted in the first rotation stop portion 11 of the first rotation stop hole 10 of the lock nut 6 and outside the fourth rotation stop portion 19 of the rotation stop shaft 17 of the screw 5, and the lock nut 8 is screwed to the external thread. The portion 18 is axially constrained to the side of the anti-rotation sleeve 7 facing away from the parent body 1. The first rotation stop portion 11 of the lock nut 6 and the second rotation stop portion 13 of the rotation sleeve 7 cooperate with the rotation of the lock nut 6 relative to the rotation sleeve 7 , and the third rotation stop portion 14 of the rotation sleeve 7 and the screw 5 The fourth rotation stop 19 cooperates with the restraining screw 5 to rotate relative to the rotation sleeve 7, and the screw 5 and the lock nut 6 are non-rotatably mounted together.

The installation method includes the following steps:

The through hole 4 on the attached body 2 is opposite to the through hole 3 on the mother body 1, the first external thread portion 16 of the screw 5 is passed through the through hole 3 in the parent body 1, the through hole 4 in the attached body 2, and the lock nut 6 threaded connection, the resisting portion 15 axially resists the base body 1, the lock nut 6 axially resists the attachment body 2, the screw 5 and the lock nut 6 fasten the mother body 1 and the attachment body 2 together; the rotation axis of the screw 5 is set In the first rotation stop hole 10 of the lock nut 6, the first rotation stop portion 11 of the lock nut 6 corresponds to the positional relationship of the fourth rotation stop portion 19 of the screw 5;

The forward or reverse micro-rotation lock nut 6 adjusts the angle of the first rotation stop portion 11 of the lock nut 6 with respect to the fourth rotation stop portion 19, so that the first rotation stop portion 11 of the lock nut 6 and the screw 5 are The positional relationship of the four rotation preventing portions 19 corresponds to the positional relationship between the second rotation preventing portion 13 of the rotation preventing sleeve 7 and the first rotation preventing portion 11 of the lock nut 6, and the third rotation preventing portion 14 of the rotation preventing sleeve 7 is The fourth rotation stop portion 19 of the screw 5 corresponds to the positional relationship, and the third rotation stop portion 14 of the rotation preventing sleeve 7 is mounted outside the fourth rotation stop portion 19 of the screw 5 and placed first in the first rotation stop hole 10 The rotation preventing sleeve 11 is axially restrained in the axial direction of the fourth rotation preventing portion 19 of the screw 5 and the first rotation preventing portion 11 of the first rotation preventing hole 10.

Example 2

As shown in FIG. 5, unlike the first embodiment, the hole wall of the first rotation stop hole 31 has an internal gear shape, and a plurality of axial trapezoidal grooves are evenly arranged in the circumferential direction of the hole wall of the first rotation stop hole 31. A single trapezoidal groove forms a first anti-rotation portion 32. The outer circumference of the rotation preventing sleeve 33 is an outer gear shape that cooperates with the hole wall of the first rotation preventing hole 31. The outer circumferential circumference of the rotation preventing sleeve 33 uniformly aligns a plurality of axial trapezoidal teeth, and the single trapezoidal teeth form the second rotation preventing portion 34. . The rotation preventing through hole 35 of the rotation preventing sleeve 33 has an inner gear shape, and the rotation preventing shaft 37 of the screw 36 has an outer gear shape that cooperates with the inner gear type rotation preventing through hole 35. A plurality of axial trapezoidal grooves are uniformly arranged in the circumferential direction of the hole wall of the through hole 35, and a single trapezoidal groove forms a third torsion portion 38. The plurality of axial trapezoidal teeth are evenly arranged in the outer circumferential direction of the rotation preventing shaft 37, and the single trapezoidal teeth form the fourth rotation preventing portion 39.

The first rotation preventing hole of the lock nut cooperates with the outer circumference of the rotation preventing sleeve as a gear-shaped structure, and the structure of the inner circumference of the rotation preventing sleeve and the rotation preventing shaft of the screw is a gear-shaped structure, so that the first rotation stop portion and the first The more the two rotation stop portions, the third rotation rotation portion and the fourth rotation rotation portion are, the smaller the angle of fine adjustment of the lock nut is, the lock nut and the screw are adjusted when the first rotation stop portion and the fourth rotation rotation portion are adjusted. The locking force of the threaded connection is more difficult to guarantee in the optimum range.

Example 3

As shown in FIGS. 6 and 7, unlike the second embodiment, the thrust sleeve stopper is a rubber cap 53. The lock nut 51 is provided with a receiving circular hole 54 for avoiding the rubber cap 53 coaxially and in communication with the first rotation stop hole 52. The hole wall of the first rotation stop hole 52 has an inner gear shape, and a plurality of axial triangular grooves are uniformly arranged circumferentially on the hole wall of the first rotation stop hole 52, and a single triangular groove forms a first rotation stop portion 55. The outer circumference of the lock nut 51 has a spline shape, and the outer circumference of the lock nut 51 is radially protruded from the end of the receiving circular hole 54 to resist the round convex ring 56. The depth of the first rotation stop hole 52 is equal to the thickness of the rotation preventing sleeve 57.

The outer circumference of the rotation preventing sleeve 57 is an outer gear shape that cooperates with the hole wall of the first rotation preventing hole 52. The outer circumference of the rotation preventing sleeve 57 is uniformly arranged with a plurality of axial triangular teeth, and the single triangular teeth form the second rotation preventing portion 58. . On the outer circumference of the rotation preventing sleeve 57, two extraction grooves 59 for arranging the axial direction of the rotation preventing sleeve 57 for detaching the rotation preventing sleeve 57 are provided. The take-out groove 59 is formed by opposing faces of the triangular teeth and arcuate faces connecting the opposite faces of the triangular teeth. Hole wall of the through hole 60 A planar wall 61 having a circular arc wall larger than 180° and connecting the circular arc walls, and a planar wall 61 connecting the circular arc walls form a third rotation preventing portion 62.

The screw 63 is sequentially provided with a first external thread portion 67 in which the resisting portion 64 and the optical rod portion 65 are engaged with the threaded through holes 66 of the lock nut 51. The first external thread portion 67 is provided with a planar fourth rotation preventing portion 68 that engages with the third rotation preventing portion 62 of the plane of the rotation preventing through hole 60 of the rotation preventing sleeve 57, and is provided with the fourth rotation preventing portion 68. The outer circumference of the first male screw portion 67 is engaged with the rotation preventing through hole 60.

The rubber cap 53 includes a cylindrical portion 69 whose outer circumference is engaged with the receiving circular hole 54 of the rotation preventing sleeve 57 and a spherical portion 70 which is connected to the end surface of one end of the cylindrical portion 69, and is disposed at the axial center position of the other end of the cylindrical portion 69. A blind hole 71 in which the first male screw portion 67 of the screw 63 is fitted, and an annular elastic resisting ring 61 are protruded from the hole wall of the blind hole 71.

The rotation preventing sleeve 57 is mounted in the first rotation preventing hole 52 of the lock nut 51 and the screw 63 is provided with the first external thread portion 67 of the fourth rotation preventing portion 68. The rubber cap 53 is elastically deformed to closely fit the resisting ring 61. The ground sleeve is limited to one side of the first external thread portion 67 to the one side of the rotation preventing sleeve 57. The cylindrical portion 69 of the rubber cap 393 is received in the receiving circular hole 54 of the lock nut 51, and the rotation preventing sleeve 57 covers the first portion. A stop hole 52.

Example 4

As shown in FIG. 8, different from the third embodiment, the rotation preventing through hole 92 of the rotation preventing sleeve 91 includes a circular arc wall larger than 180° and a V-shaped convex portion 93 at a right angle of the radially convex circular arc wall. The V-shaped projection 93 forms a third rotation stop 94. The first external thread portion 96 of the screw 95 is provided with an axially right-angled V-shaped rotation preventing groove 97 that cooperates with the V-shaped convex portion 93, and the V-shaped rotation preventing groove 97 forms a fourth engagement with the third rotation preventing portion 94. The rotation stop portion 98.

Example 5

As shown in FIG. 9 to FIG. 11 , different from the second embodiment, three holes of the axially evenly distributed axial rotation stop are provided on the hole wall of the rotation preventing through hole 132 , and one rotation stop bar forms a third rotation stop. Part 134.

The screw 125 is sequentially provided with a resisting portion 198, a first external thread portion 136 that cooperates with the threaded through hole 129 of the lock nut 195, and the resisting portion 198 radially protrudes from the first male thread portion 136. The first external thread portion 136 is provided with three axial rotation preventing grooves which are matched with the three rotation preventing bars on the rotation preventing sleeve 192, and one rotation preventing groove forms a fourth matching with the third rotation preventing portion 134. The rotation stop portion 137.

The stop sleeve limiter is a buckle cover 194. A card slot 201 is provided on the outer circumference of the lock nut 195. The buckle cover 194 includes a positive hexagonal cover body 196. The cover body 196 is provided with a receiving cavity 197 for receiving the lock nut 195, and six inwardly protruding holes are provided at the opening end of the receiving cavity 197. The receiving portion 198 of the cavity wall of the cavity 197 is provided with a slot 199 between the two sides of each resisting portion 198 and the cavity wall of the receiving cavity 197, and the receiving portion 198 is accommodated between the corresponding two slots 199. The cavity wall of the cavity 197 forms an elastic buckle 200 that is buckled. The resisting portion 198 of the elastic buckle 200 is buckled inwardly in the slot 201 of the lock nut 195 to axially limit the side of the rotation preventing sleeve 192 away from the mother body 202. The locking nut 195 is partially received in the capacity of the buckle cover 194. Placed inside cavity 197.

Example 6

14 to 16, in addition to the fifth embodiment, the mounting portion 222 is provided on the end surface of the first male screw portion 221, and the circumferential latching groove 223 is provided on the outer periphery of the mounting portion 222. The maximum outer diameter is smaller than the bottom diameter of the first male screw portion 221.

A cavity 226 is disposed on a side of the buckle cover 224 facing the base 225. On the bottom surface of the cavity 226, four inwardly engaging elastic buckles 227 that cooperate with the card slots 223 are protruded. The outer diameter of the annular end surface 229 of the cavity wall 228 is smaller than the maximum outer diameter of the rotation sleeve 230, and the inner diameter is larger than the minimum inner diameter of the rotation sleeve 230. This ensures that the annular end surface 229 can withstand the back surface of the rotation sleeve 230 away from the base 225. On the end face.

The elastic buckle 227 of the buckle cover 224 is fastened in the slot 223 of the mounting portion 222 of the screw. The annular end surface 229 of the cavity wall 228 abuts against the end surface of the rotation sleeve 230 away from the base 225 in the axial direction of the rotation sleeve 230. Limit.

Example 7

As shown in FIG. 15 to FIG. 17, different from the embodiment 5, the lock nut 251 includes a lock nut body 252, and the outer periphery of the lock nut body 252 is provided with a resisting convex ring 253, and the lock nut body 252 The sides are each axially convex to resist the convex ring 253.

The buckle cover 254 includes a positive hexagonal cover body 255. The cover body 255 is provided with a cavity 256 for receiving the lock nut 251. The bottom surface of the cavity 256 is provided with a through hole 257 for avoiding the screw. The end surface of the opening end of 256 is provided with six vertical open end end faces convexly bent outwardly and then the end face of the vertical open end is bent convex 258, and the resisting portion is radially convex on the inward facing surface of the convex strip 258 259, a rib 258 and the abutment portion 259 thereon form an elastic snap 260. The buckle body 255 and the elastic buckle 260 form a resisting convex ring 253 with the lock nut 251, and the resisting convex ring 253 is away from the mother body. The locking nut body 252 on one side cooperates with the accommodating cavity 261. The side of the lock nut 251 facing away from the first rotation stop hole protrudes from the axial length of the resisting collar 253 by more than the axial length of the resisting portion 259 on the buckle cover 254, so that the buckle cover 254 has sufficient space for the lock to be locked. The nut 251 is resisted on the convex ring 253.

The resisting portion 259 of the elastic buckle 260 is buckled inwardly on the resisting convex ring 253 of the lock nut 251 to axially limit the side of the rotation preventing sleeve away from the resisting portion 259, and the partial locking nut body 252 and the resisting convex ring 253 are accommodated. It is placed in the accommodating cavity 261 of the buckle cover 254.

Example 8

As shown in FIG. 18, unlike the fifth embodiment, the anti-rotation sleeve stopper is an outer hexagonal anti-lock nut 271.

Only one rotation preventing strip 277 is provided on the wall of the hole of the through hole 273.

The first male threaded portion 275 of the screw 274 is provided with only one rotation preventing groove 272 that cooperates with the rotation preventing strip of the rotation preventing sleeve 276.

Example 9

As shown in Figs. 19 and 20, unlike the eighth embodiment, the conical support portions 302 of the three axially projecting rotation preventing sleeves 301 are evenly distributed on one end surface of the rotation preventing sleeve 301.

The rotation preventing sleeve 301 is mounted in the first rotation preventing hole 304 of the lock nut 303 and the screw 305 is provided with the first external thread portion 306 of the rotation preventing strip, and the supporting portion 302 of the rotation preventing sleeve 301 is supported by the first rotation preventing hole The bottom of the 304 forms a take-out space 308 through which the retaining sleeve 301 and the bottom surface of the first anti-rotation hole 304 are formed for removing a rotation preventing sleeve 301 for a removal tool such as a clamp (not shown) through the take-out groove 307. Therefore, the clamping force of the clamp holding rotation preventing sleeve 301 is greatly increased, and the rotation preventing sleeve 301 can be taken out from the locking nut 303 when the fastening connection assembly is removed.

Example 10

As shown in FIGS. 21 to 23, unlike the fifth embodiment, the stop sleeve stopper is a snap ring 435. A mounting portion 354 is disposed on an end surface of the first male screw portion 353 of the screw 436, and an annular locking groove 437 is disposed on an outer circumference of the mounting portion 354, and the locking groove 437 is adjacent to the sidewall of the first male screw portion 353 and The end surface of the external threaded portion 353 is flush, so that the snap ring 435 has axial clearance to the rotation preventing sleeve 438, so that there is no axial gap between the rotation preventing sleeve 438 and the lock nut 357 and the snap ring 435, and the rotation sleeve 438 is in the card. The groove 437 does not move axially, and the noise is greatly reduced in the case of large vibration. The maximum outer diameter of the mounting portion 354 is smaller than the bottom diameter of the first male screw portion 353. The snap ring 435 is mounted in the slot 437 to axially limit the side of the stop sleeve 438 away from the parent 450.

The method of disassembling the fastening structure includes the following steps:

First, the snap ring 435 is taken out from the slot 437 of the screw 436;

The retaining sleeve 438 is then removed from the first stop hole 432 by a clamp: the clamp includes a left jaw body 439 and a right jaw body 440 that are pivotally pivoted together. The left caliper body 439 includes a left shank portion 441, a left pivoting portion 442, a clamping end portion 443, and a left clamping convex portion 444 disposed on the clamping end portion 443 toward the right caliper body 440, the left shank portion The 441 and the clamping end portion 443 are respectively located at two sides of the left pivoting portion 442, and the central surfaces of the left shank portion 441, the left pivot portion 442, the clamping end portion 443, and the left clamping convex portion 444 are on one plane. The right caliper body 440 includes a right shank portion 445, a right pivoting portion 446, a clamping end portion 447, and a right clamping convex portion 448 disposed on the clamping end portion 447 toward the left caliper body 439, and the right shank portion The 445 and the clamping end portion 447 are respectively located at two sides of the right pivoting portion 446, and the central surfaces of the right shank portion 445, the right pivot portion 446, the clamping end portion 447, and the right clamping convex portion 448 are on one plane. The clamping end portion 443 and the left clamping convex portion 444 of the left caliper body 439, the clamping end portion 447 and the right clamping convex portion 448 of the right caliper body 440 are engaged with the corresponding take-out grooves 433 of the lock nut 431; When the tongs are opened, the clamping end portion 443 and the left clamping convex portion 444 of the left caliper body 439 extend into a take-out groove 433 and the left clamping convex portion 444 extends radially between the rotation preventing sleeve 438 and the lock nut 431. In the cutout portion 434, the clamping end portion 447 and the right clamping convex portion 448 of the right caliper body 440 extend into the other extraction groove 433 and the right clamping convex portion 448 projects radially into the rotation preventing sleeve 438 and the lock nut 431. In the inner hollow portion 434, the clamp is again gathered, and the rotation preventing sleeve 438 is taken out from the first rotation preventing hole 432;

Separating the lock nut 431 from the screw 436;

Then, the screw 436 is taken out from the attached body 449 and the mother body 450 to complete the disassembly of the fastening structure.

Example 11

As shown in FIG. 24, unlike the embodiment 10, the center faces of the left and right pivot portions 461 and 462 of the clamp are on one plane, and the left pivotal portion 462 is perpendicular to the left handle 461. Portion 463 vertically clamps end 464. The center faces of the right and right pivots 465 and 466 are in a plane, the grip end 467 is perpendicular to the right handle 465, and the right gripping projection 468 is perpendicular to the grip end 467.

Example 12

As shown in FIGS. 25 to 27, unlike the first embodiment, the mother body 591 is provided with a blind hole 592.

The fastening connection assembly further includes an expansion member 593 having the same three-lobed structure, a wire spring 594, a wire spring 595, and a drive lock nut 596.

The expansion member 593 includes an expansion member body 597, and a wedge-shaped abutting portion 598 and a wire spring receiving groove 599, which are radially protruded from the outer periphery of the expansion member body 597, and the wire spring receiving groove 600 are respectively disposed on the expansion member body 597. The first expansion tapered surface 601 and the second expansion tapered surface 602 on the inner circumference of both ends are connected to the cylindrical curved surface 603 of the first expansion tapered surface 601 and the second expansion tapered surface 602, and are mounted by the wire spring 594 The wire spring receiving groove 599 is installed in the wire spring receiving groove 600 through the wire spring 595 to hold the three-valve expansion member 593 together to form an expansion sleeve 604; the corresponding resisting portion 598 on the expansion sleeve 604 is circumferentially distributed to form a disconnected independent ring. The single wedge-shaped abutment 598 on the expansion member 593 has a triangular cross section.

The screw 605 includes a cylindrical abutting portion 606, a conical abutting portion 607 having a large end connected to the abutting portion 606, a cylindrical connecting portion 608 connected to the small end of the abutting portion 607, and a small end connected to the connecting portion 608. a conical first driving taper surface 609, a first external thread portion 610 connected to the small end of the first driving taper surface 609, and a rotation preventing shaft 611 connected to the end surface of the first external thread portion 610, connected to the end surface of the rotation preventing shaft 611 External threaded portion 612. A fourth rotation preventing portion 613 is provided on the outer circumference of the rotation preventing shaft 611, and the outer circumference of the rotation preventing shaft 611 has a spline shape. An axial rib on the outer circumference of the rotation preventing shaft 611 forms a fourth rotation preventing portion 613. The resisting portion 606 is radially outwardly opposed to the blocking portion 607. The maximum outer diameter of the rotation preventing shaft 611 is less than or equal to the thread bottom diameter of the first external thread portion 610 and larger than the maximum outer diameter of the external thread portion 612.

The drive lock nut 596 includes a cylindrical abutting portion 614, a conical abutting portion 615 having a large end connected to the end surface of the abutting portion 614, a cylindrical connecting portion 616 connected to the small end of the abutting portion 615, and a large end connected to the connecting portion 616. The conical second driving cone surface 617, the resisting portion 614 radially protrudes from the large end of the resisting portion 615. The axial position of the drive lock nut 596 is provided with a threaded hole 622 that cooperates with the first external threaded portion 610. The end surface of the resisting portion 614 is provided with six pairs of circular clamping holes 618 that are axially symmetrical with respect to the drive lock nut 596.

An annular wedge-shaped abutment groove 619 is formed on the hole wall of the blind hole 592 of the mother body 591. The single wedge-shaped abutment groove 619 has a triangular cross section; the attachment body 620 is provided with a through hole 621. The aperture of the through hole 621 on the appendage 620 is smaller than the aperture of the blind hole 592 on the parent body 591.

The first external thread portion 610 of the screw 605 is threadedly coupled to the threaded hole 622 of the drive lock nut 596 through the expansion sleeve 604, the abutting portion 606 of the screw 605, the abutting portion 607, the connecting portion 608, the first driving tapered surface 609 and a portion The first male threaded portion 610, the expansion sleeve 604, and the drive lock nut 596 are mounted in the blind hole 592 on the female body 591; in the unexpanded state of the expansion sleeve 604, the first expansion tapered surface 601 of the expansion sleeve 604 is held in the screw On the first drive cone 609 of the 605, the second expansion taper 602 of the expansion sleeve 604 is hugged over the second drive cone 617 of the drive lock nut 596. The first driving taper surface 609 slides relative to the first expanding taper surface 601, and the second driving taper surface 617 slides relative to the second expanding taper surface 602 to drive the expansion sleeve 604 to expand. In the fully expanded state of the expanding sleeve 604, one end of the expanding sleeve 604 The end face resists the abutting portion 606 of the screw 605, and the first driving taper surface 609 of the screw 605 is placed in the cylindrical curved surface 603 of the expansion sleeve 604 over the first expansion taper surface 601; the end surface of the other end of the expansion sleeve 604 is resisted On the resisting portion 614 of the drive lock nut 596, the second drive taper 617 of the drive lock nut 596 is placed over the cylindrical curved surface 603 of the expansion sleeve 604 over the second expansion taper 602; the wedge-shaped resisting portion 598 extends The corresponding wedge-shaped abutting groove 619 is formed by the surface and the surface resisting each other, and the wedge-shaped resisting portion 598 on the expansion sleeve 604 is axially resisted by the upper wedge-shaped resisting groove 619 of the female body 591. The screw 605, the expansion sleeve 604, and the driving lock are locked. The nut 596 is fixedly coupled to the base 591, and the abutting portion 606 of the screw 605 is axially resisted by the expansion sleeve 604.

The first externally threaded portion 610 of the screw 605 is threadedly coupled to the lock nut 623 through a through hole 621 in the attachment 620. The lock nut 623 axially resists the attachment 620, and the screw 605, the expansion sleeve 604 and the lock nut 623 will The parent body 591 and the appendage 620 are fastened together.

Example 13

As shown in FIG. 28 to FIG. 30, a track structure includes a fastening connection assembly, an insulation cushion plate 661, an iron pad lower adjustment plate 662, an iron pad 663, a rail under-pad 664, a guide rail 665, and an insulation. Block 666, spring 667.

The fastening connection assembly is different from the first embodiment in that the screw 668 includes a first external thread portion 669, a polished rod portion 670, and a rotation preventing abutting portion 671, and two axially symmetric about the screw 668 are provided on the rotation preventing abutting portion 671. Turn plane 672. The outer circumference of the positive hexagon of the lock nut 678 is convexly provided to resist the convex ring 673.

A resisting projection 675 is disposed on both sides of the guide rail 665 on the iron pad 663. A through hole 676 and a spring support portion 682 that are engaged with the first male screw portion 669 are sequentially disposed on the outer side of each of the side resisting projections 675. The bottom surface of the iron pad 663 is provided with a rotation preventing groove 677 which communicates with the through hole 676 and cooperates with the resisting portion 671.

The insulating cushion pad 661 is mounted on the foundation. The iron pad 663 lower height adjusting plate 662 is mounted on the insulating cushion plate 661. The iron pad plate 663 is mounted on the iron pad plate 663 to raise the pad 662, and the rail under the pad 664. Mounted on the iron pad 663, the rail 665 is mounted on the under-rail pad 664. The under-rail pad 664 and the guide rail 665 are disposed between the two resisting protrusions 675; the insulating blocks 666 are respectively installed between the two sides of the guide rail 665 and the two resisting protrusions 675 of the iron pad 663, and the two sides of the iron pad 663 are abutted. The blocking protrusion 675 limits the two sides of the insulating block 666, and the insulating blocks 666 on both sides limit the two sides of the guiding line 665.

The rotation preventing abutting portion 671 of the screw 668 passes through the through hole 676 on the iron pad 663 from the top to the bottom and is rotatably installed in the rotation preventing groove 677. The iron pad 663 is disposed between the resisting protrusion 675 and the elastic bar supporting portion 682 on the same side as the through hole 676. The first external thread portion 669 passes upward through the elastic bar 667, and the elastic bar 667 is supported on the corresponding insulating block. 666 and the elastic bar support portion 682, the first external thread portion 669 protrudes from the elastic rod 667 and is screwed with the threaded through hole 679 of the lock nut 678, and the rotation preventing resist portion 671 axially resists the iron pad 663, and the lock nut 678 One end of the anti-circular ring 673 is axially resisted by the elastic bar 667, and the screw 668 and the lock nut 678 fasten and fasten the iron pad 663 and the elastic bar 667; the anti-rotation resisting portion 671 and the anti-rotation groove 677 cooperate with the constraint The screw 668 rotates relative to the iron pad 663.

The lock nut 678, the rotation stop sleeve 680, and the lock nut 681 are identical to the lock nut, the rotation sleeve, and the lock nut of the embodiment 1.

Example 14

As shown in FIG. 28 to FIG. 30, a track structure includes a fastening connection assembly, a pre-embedded bushing 700 in the pre-buried foundation 674, an insulating cushion plate 661 installed in order from the bottom to the top, and an iron pad lowering height pad. A plate 662, an iron pad 663 for carrying the track, and a flat pad 701.

The fastening connection assembly differs from the embodiment 25 in that only one annular abutment portion 703 is provided on the outer circumference of the expansion member body 702.

The insulating cushion plate 661 and the iron pad lower adjusting plate 662, the iron pad 663 and the flat pad 701 are respectively provided with one-to-one corresponding through holes 704, through holes 705, through holes 706 and through holes 707.

The pre-embedded sleeve 700 is pre-buried in a blind hole on the foundation 674 corresponding to the through hole 706 of the iron pad 663, and a blind hole 708 is provided in the pre-embedded bushing 700, and the hole wall of the pre-embedded bushing 700 is provided. There is only one annular resist groove 709 that cooperates with the resisting portion 703. The through hole 704 of the insulating cushion plate 661, the through hole 705 of the iron pad lower adjusting pad 662, the through hole 706 on the iron pad 663, and the blind hole 708 on the pre-embedded bushing 700 have the same aperture, which is larger than the flat pad. The aperture of the through hole 707 on the block 701.

The first external thread portion 711 of the screw 710 is screwed to the drive lock nut 713 through the expansion sleeve 712, the abutting portion 714 of the screw 710, the abutting portion 715, the connecting portion 716, the first driving taper surface 717 and a portion of the first external thread. The portion 711, the expansion sleeve 712, and the drive lock nut 713 are mounted in the blind hole 708 on the pre-embedded sleeve 700. In the fully expanded state of the expansion sleeve 712, the resisting portion 703 of the expansion sleeve 712 extends into the resisting groove 709 of the pre-embedded sleeve 700, and the surface and the surface resist each other to form a snap. The resisting portion 703 on the expansion sleeve 712 is pre-embedded. The upper resisting groove 709 of the 700 is axially resisted, and the screw 710, the expansion sleeve 712, and the driving lock nut 713 are fixedly coupled with the pre-embedded sleeve 700, and the resisting portion 714 of the screw 710 is axially resisted by the expansion sleeve 712.

The first external thread portion 711 of the screw 710 passes through the through hole 704 of the insulating cushion plate 661, the through hole 705 of the iron pad lower adjustment pad 662, the through hole 706 on the iron pad 663, and the flat pad 701. The through hole 707 is screwed to the lock nut 718, the lock nut 718 axially resists the flat block 701, and the screw 710, the expansion sleeve 712 and the lock nut 718 will pre-embed the sleeve 700 and the insulating cushion plate 661, the iron pad The high-pad 662 iron pad 663 and the flat pad 701 are fastened and connected together.

The lock nut 718, the rotation preventing sleeve 719, and the resisting lock nut 720 have the same structure and installation relationship as the lock nut, the rotation preventing sleeve, and the locking nut of the first embodiment.

Example 15

As shown in FIGS. 31 to 32, a bone connecting device includes a fastening connection assembly and a connecting member 791.

The fastening connection assembly is the same as in the fifth embodiment.

Four through holes 792, through holes 793, through holes 794, and through holes 795 are provided in the connecting member 791. The through hole 792 on the connecting member 791 corresponds to the screw 796, the lock nut 798, the rotation preventing sleeve 799, and the buckle cover 800. The through hole 793 on the connecting member 791 corresponds to the screw 801, the lock nut 802, the rotation preventing sleeve 803, and the buckle cover 804. The through hole 794 on the connecting member 791 corresponds to the screw 805, the lock nut 806, the rotation preventing sleeve 807, and the buckle cover 808. The through hole 795 on the connecting member 791 corresponds to the screw 809, the lock nut 810, the rotation preventing sleeve 811, and the buckle cover 812.

The first external thread portion 797 of the screw 796 is threadedly connected to the lock nut 798 through the through hole 792 of the connecting member 791, and the first external thread portion 814 of the screw 801 passes through the through hole 793 of the connecting member 791. The broken bone 813 is screwed to the lock nut 802. The screw 796 and the lock nut 798, the screw 801 and the lock nut 802 securely connect the broken bone 813 with the connector 791.

The first external thread portion 815 of the screw 805 is threadedly connected to the lock nut 806 through the through hole 794, the broken bone 817 of the connector 791, and the first external thread portion 816 of the screw 809 passes through the through hole 795 of the connector 791. The broken bone 817 is screwed with the lock nut 810, and the screw 805 and the lock nut 806, the screw 809 and the lock nut 810 connect the broken bone 817 and the connecting piece. The 791 is fastened together.

The bone joining method of the bone connecting device comprises the following steps:

The first male threaded portion 797 of the screw 796 is threadedly connected to the lock nut 798 through the through hole 792 and the broken bone 813 of the connecting member 791, and the first male threaded portion 814 of the screw 801 is passed through the connecting member 791. The hole 793, the broken bone 813 are screwed to the lock nut 802, and the screw 796 and the lock nut 798, the screw 801 and the lock nut 802 fasten the broken bone 813 and the connecting piece 791 together. The first external thread portion 815 of the screw 805 is threadedly connected to the lock nut 806 through the through hole 794 and the broken bone 817 of the connecting member 791. The first external thread portion 816 of the screw 809 passes through the through hole in the connecting member 791. 795, the broken bone 817 is screwed with the lock nut 810, and the screw 805 and the lock nut 806, the screw 809 and the lock nut 810 fasten the broken bone 817 and the connecting member 791 together.

The lock nut, the rotation sleeve, and the lock nut that are mounted together with the corresponding screw are identical to the lock nut, the rotation sleeve, and the lock nut of the embodiment 10.

Figure 33 is a perspective view showing the rotation preventing sleeve of the sixteenth embodiment.

Example 16

As shown in Fig. 33, unlike the fifth embodiment, three end faces of the rotation preventing sleeve 831 are provided with three supporting portions 832 which axially project the end faces of the rotation preventing sleeves 831. The take-out groove on the lock nut (not shown) is flush with the bottom surface of the first rotation stop hole (not shown), and the support portion 832 causes the rotation preventing sleeve 831 to face the side of the bottom surface of the first rotation stop hole and the first A take-out space (not shown) that communicates with the holding hole 833 is formed between the bottom surfaces of the rotation preventing holes.

Example 17

As shown in FIGS. 34 and 35, the crankshaft link mechanism includes a fastening connection assembly, a crankshaft 941, and a link set.

The fastening joint assembly is different from the first embodiment in that a stop plane 944 is provided on the abutting portion 943 of the screw 942.

The link set includes a link body 951, a link head cover 952, and a link large head bush 953. The link body 951 includes a link head 945 and a link head 946. A through hole 954 is defined in the connecting rod big head 945, and a through hole 955 is arranged in the connecting rod big head cover 952.

The connecting rod big head bearing 953 is enclosed outside the crankshaft 941, and the connecting rod big head 945 and the connecting rod big head cover 952 are enclosed outside the connecting rod big head bearing 953; the first external thread portion 947 of the screw 942 passes through the connecting rod big head 945. The through hole 955 of the hole 954 and the connecting rod big head cover 952 is screwed with the lock nut 948, and the rotation preventing surface 944 of the resisting portion 943 of the screw 942 abuts against the connecting rod big head 945, and the screw 942 and the connecting rod big head 945 are not rotatable. Installed together, the resisting portion 943 axially resists the connecting rod head 945, the locking nut 948 axially resists the connecting rod head cover 952, and the screw 942 and the lock nut 948 fasten the connecting rod big head 945 and the connecting rod big head cover 952 Together.

The lock nut 948, the rotation preventing sleeve 949, and the resisting lock nut 950 have the same structure and installation relationship as the lock nut, the rotation preventing sleeve and the resisting lock nut of the first embodiment.

Example 18

As shown in FIG. 36, unlike the embodiment 17, the screw 973 includes a resisting portion 968, a polished rod portion 969, and a first male screw portion first male screw portion 974. The hole wall of the rotation preventing through hole 971 of the rotation preventing sleeve 970 is provided with three circumferentially evenly distributed axial rotation preventing bars, and one of the rotation preventing bars forms a third rotation preventing portion 972. The first external thread portion 974 of the screw 973 is provided with three axial rotation preventing grooves which are matched with the three rotation preventing bars on the rotation preventing sleeve 970, and one rotation preventing groove forms a matching with the third rotation preventing portion 972. The fourth rotation stop portion 975. The third rotation stop portion 972 of the rotation sleeve 970 extends into the fourth rotation stop portion 975 of the screw 973 to restrain the screw 973 from rotating relative to the rotation sleeve 970.

Claims (19)

A fastening connection assembly includes a screw and a lock nut; the screw is provided with a resisting portion and a first external thread portion; the resisting portion radially protrudes the first external thread portion; and the utility model further comprises: a rotation preventing sleeve; a threaded through hole and a first rotation stop hole communicating with the threaded through hole are provided in the lock nut, the minimum aperture of the first rotation stop hole is larger than the maximum aperture of the threaded through hole; and the circumference of the hole wall of the first rotation stop hole is provided Aligning more than six axial first warping portions uniformly; The lock nut is further provided with two or more take-out grooves penetrating through the first stop hole, the lock nut outer circumference and the top surface of the first rotation stop hole wall; The outer circumference of the rotation preventing sleeve is provided with a second rotation stopping portion which is matched with the first rotation preventing portion and uniformly arranged in the circumferential direction; the rotation preventing sleeve is provided with an axial rotation preventing through hole, and the hole wall of the rotation preventing through hole is provided a plurality of axial third rotation preventing portions; the rotation sleeve is provided with an outer circumference of the second rotation preventing portion and a hole wall of the first rotation preventing hole of the lock nut; Providing a fourth rotation stop portion that cooperates with the third rotation preventing portion on the screw; The threaded through hole of the lock nut is screwed to the first external thread portion, and the fourth rotation end of the screw is placed in the first rotation stop hole of the lock nut, and the first rotation stop portion of the lock nut and the fourth rotation portion of the screw The rotation stop portion has a positional relationship; the rotation sleeve is mounted outside the screw provided with the fourth rotation stop portion and disposed in the first rotation stop hole, and the rotation prevention sleeve is axially restrained in the first rotation prevention hole; The rotation stop portion and the second rotation stop portion cooperate to restrain the rotation of the lock nut relative to the rotation sleeve, and the third rotation stop portion and the fourth rotation rotation portion cooperate to restrain the rotation of the rotation sleeve relative to the screw, and the screw and the lock nut are non-rotatably mounted on the screw together. A fastening connection assembly according to claim 1, wherein a take-out space communicating with the take-out groove is provided between a side of the rotation preventing sleeve facing the bottom surface of the first rotation preventing hole and the first rotation preventing hole. A fastening connection assembly according to claim 2, wherein on one end surface of the rotation preventing sleeve, three or more support portions of the same side axially projecting end faces of the rotation preventing sleeve are provided; the support portion stops the rotation The sleeve faces the side of the bottom surface of the first rotation stop hole and the bottom of the first rotation stop hole forms the take-out space that communicates with the take-out groove. A fastening connection assembly according to claim 2, wherein the depth of the removal groove is greater than the depth of the first rotation stop hole, and the extraction groove extends radially inwardly into the first rotation stop hole and the first rotation stop The bottom surface of the hole communicates, and the side of the rotation preventing sleeve facing the bottom surface of the first rotation preventing hole and the take-out groove extending into the first rotation preventing hole form the take-out space. A fastening connection assembly according to claim 1, wherein a non-rotation shaft that cooperates with the rotation preventing through hole is provided on an end surface of the first external thread portion facing away from the abutting portion, and the fourth rotation preventing portion Provided on the outer circumference of the rotation preventing shaft; the maximum outer diameter of the rotation preventing shaft is less than or equal to the thread bottom diameter of the first external thread portion; The rotation preventing shaft is placed in the first rotation preventing hole, and the rotation preventing sleeve is installed outside the rotation preventing shaft and placed in the first rotation preventing hole. A fastening connection assembly according to claim 1, wherein said third rotation stop portion is a plurality of axial rotation preventing bars protruding from the hole wall of the rotation preventing through hole; The fourth rotation preventing portion is an axial rotation preventing groove which is disposed on the first external thread portion and cooperates with the rotation preventing bar; the rotation preventing groove is a rolling forming groove, and the first screw is formed outside the first screw The threaded portion is rolled and formed; the rotation preventing strip on the rotation preventing sleeve extends into the rotation preventing groove of the screw to restrain the rotation of the rotation preventing sleeve relative to the screw. A fastening joint assembly according to claim 1, wherein said hole wall of said through-stop hole is formed by a circular arc surface and a rotation preventing plane connecting the circular arc surfaces; said third rotation stop a rotation stop plane of the rotation sleeve on the hole wall of the through hole; the fourth rotation stop portion is a screw rotation stop plane disposed on the first external thread portion and engaging with the rotation stop plane of the rotation sleeve; The sleeve rotation plane cooperates with the screw rotation stop plane to restrain the rotation of the rotation sleeve relative to the screw. A fastening connection assembly according to claim 1, wherein said fourth rotation preventing portion is a one or more axial rotation preventing grooves provided on the first external thread portion, said rotation preventing groove The cutting groove has a V-shaped cross section, and gradually decreases from the tail end of the screw to the resisting portion of the screw; the third rotation preventing portion is a rotation preventing rod protruding from the hole wall of the rotation preventing through hole. The rotating strip forms a concave-convex fit with the rotation stop groove. A fastening connection assembly according to claim 1 wherein said fastening connection assembly further comprises a rotation preventing sleeve The stopper member is a snap ring or a buckle cover for an elastic buckle provided with two or more inner buckles; the snap ring or the buckle cover is mounted on the screw or the lock nut to stop the rotation Set one side axial limit. A fastening connection assembly according to claim 9, wherein said anti-rotation sleeve limiting member is a buckle cover of an elastic buckle provided with two or more inner buckles, and the buckle cover is provided with a cover. The accommodating space of the lock nut; the outer periphery of the lock nut is provided with a resisting portion that cooperates with the elastic snap; the elastic buckle is buckled inwardly on the resisting portion of the lock nut to axially limit the side of the retaining sleeve, The lock nut is accommodated in the accommodating space of the buckle cover. A fastening connection assembly according to claim 9, wherein said anti-rotation sleeve limiting member is an elastic resisting cap; and the resisting cap is provided with a blind fitting with the first external thread portion of the screw a hole, a ring-shaped elastic resisting ring is protruded from the hole wall of the blind hole; the rotation preventing sleeve is installed in the first rotation preventing hole of the lock nut and the first external thread of the screw is provided with the fourth rotation end portion Outside, the resisting cap is axially restrained by the elastic deformation of the resisting ring on the outer side of the screw sleeve on the outer side of the anti-rotation sleeve; the resisting cap covers the first anti-rotation hole of the lock nut. A fastening connection assembly according to any one of claims 1 to 11, further comprising two or more expansion members and a drive nut; and a first drive cone disposed on an outer circumference of the resisting portion of the screw a second driving cone surface on the outer circumference of the driving nut; The expansion member includes an expansion member body, an expansion sleeve abutting portion radially protruding on an outer circumference of the expansion member body, and a first expansion cone surface disposed on the inner circumference of the expansion member body and the first driving cone surface, and the first expansion cone a second driving cone surface cooperates with the second expansion taper; the expansion members are held together to form an expansion sleeve; the through hole formed by the expansion sleeve formed by the expansion joints is engaged with the first external thread portion of the screw; the expansion sleeve The corresponding expansion sleeve resisting portion is circumferentially distributed to form a broken independent ring shape; The first externally threaded portion of the screw is threadedly coupled to the drive nut and the lock nut through the expansion sleeve. A fastening joint structure comprising the fastening joint assembly according to any one of claims 1 to 11, wherein the fastening connection structure further comprises a base body and an attachment body; and the base body is provided with a screw a through hole engaged with the external thread portion, and the through hole provided with the first external thread portion of the screw; The first external thread portion of the screw passes through the through hole in the female body, and the through hole on the attached body is screwed with the lock nut, and the screw and the lock nut fasten the mother body and the attachment body together; the fourth rotation is provided The screw of the portion is placed in the first rotation stop hole of the lock nut, and the first rotation stop portion of the lock nut corresponds to the positional relationship of the fourth rotation stop portion of the screw; The rotation sleeve is installed in the first rotation stop hole of the lock nut and the screw provided with the fourth rotation stop portion, the rotation sleeve is axially restrained in the first rotation stop portion; the first rotation of the lock nut And the second rotation stop of the rotation sleeve is engaged with the rotation of the lock nut relative to the rotation sleeve, the third rotation end of the rotation sleeve and the fourth rotation end of the screw cooperate with the rotation of the restriction screw relative to the rotation sleeve, the screw and the screw The lock nuts are non-rotatably mounted together. A method for disassembling a fastening structure of a fastening joint assembly according to any one of claims 1 to 5, wherein the fastening connection structure further comprises a base body and an attachment body; a hole that cooperates with the first external thread portion of the screw, and the attachment body is provided with a through hole that cooperates with the first external thread portion of the screw; Providing a take-out space communicating with the take-out groove between a side of the stop sleeve facing the bottom surface of the first rotation stop hole and the first rotation stop hole; The first external thread portion of the screw passes through the through hole in the female body, and the through hole on the attached body is screwed with the lock nut, and the screw and the lock nut fasten the mother body and the attachment body together; the fourth rotation is provided The screw of the portion is placed in the first rotation stop hole of the lock nut, and the first rotation stop portion of the lock nut corresponds to the positional relationship of the fourth rotation stop portion of the screw; The rotation sleeve is installed outside the screw provided with the fourth rotation stop portion and placed in the first rotation stop hole; the rotation sleeve is axially restrained outside the screw provided with the fourth rotation stop portion and the first rotation stop hole ; The first rotation stop of the lock nut cooperates with the second rotation stop of the rotation sleeve to restrain the rotation of the lock nut relative to the rotation sleeve, and the third rotation end of the rotation sleeve cooperates with the fourth rotation end of the screw to restrain the screw The screw and the lock nut are non-rotatably mounted together with respect to the rotation of the rotation sleeve; The method of disassembling the fastening structure includes the following steps: The rotation sleeve is taken out from the first rotation preventing hole by a clamp: the clamp includes a left caliper body and a right caliper body pivotally coupled together, and is convex toward the right caliper body at the clamping end portion of the left caliper body. a clamping hook is provided, and a clamping hook is protruded toward the left caliper body at the clamping end portion of the right caliper body, a clamping end portion of the left caliper body, a clamping end of the clamping body, a clamping end portion and a clip of the right caliper body The hook is matched with the take-out slot, and the clamping hook of the left caliper body and the clamping hook of the right caliper body cooperate with the take-out space; the clamp is opened, and the clamping end portion of the left caliper body and the clamping hook extend into a take-out slot The clamping hook extends radially into the take-out space between the rotation preventing sleeve and the bottom surface of the first rotation preventing hole, and the clamping end portion of the right caliper body and the clamping hook extend into the other extraction groove and the clamping hook diameter Extending into the take-out space, and then clamping the clamp, the left and right grip ends of the clamp clamp the lock sleeve, the clamp hook of the left clamp body and the clamp hook of the right clamp body are away from the rotation sleeve The take-out direction resists the rotation sleeve, and the clamp takes the rotation sleeve out of the first rotation hole; Then separate the lock nut from the screw. A track structure comprising the fastening joint assembly according to any one of claims 1 to 11, characterized in that the track structure further comprises a backing plate for supporting the rail, a lower rail pad, a guide rail , the insulating block, the elastic strip; the fastening connection assembly further comprises a rotation preventing sleeve limiting member; the screw is a T-shaped screw; a bottom surface of the backing plate is provided with a rotation preventing groove which communicates with the through hole and cooperates with the resisting portion; and a through hole which cooperates with the first external threaded portion of the screw is provided on both sides of the backing plate, and is provided on the bottom surface of the backing plate a through-rotating groove communicating with the through hole and engaging with the resisting portion, the through hole adjacent to each side between the corresponding two through holes is provided with a resisting convex portion; the two outer sides of the through holes on opposite sides of the backing plate are opposite There is a spring support portion, and the through hole on the pad plate is disposed between the resisting convex portion on the same side and the elastic bar support portion; The pad is mounted on the foundation, the under-rail pad is mounted on the pad, the rail is mounted on the under-rail pad, the under-rail pad and the rail are placed between the two resisting projections of the pad; the insulating blocks are respectively mounted on the rail Between the two sides of the pad and the two resisting protrusions of the pad, the two sides of the pad resist the convex portion to limit the insulating blocks on both sides, and the two insulating blocks limit the two sides and the top surface of the guide rail; The resisting portion of the screw passes through the through hole of the backing plate from the top to the bottom and is rotatably mounted in the rotation preventing groove; the first external thread portion of the screw is screwed upward through the elastic bar and the lock nut, and the elastic bar is supported at the corresponding The insulating block and the spring supporting portion are arranged; or the two outer sides of the through holes on the two sides of the backing plate are provided with a gauge baffle, and the through holes on the backing plate are placed on the same side of the resisting convex portion and the gauge baffle The first external thread portion is threaded upwardly through the elastic strip and the lock nut, and the elastic strip is supported on the corresponding insulating block and the gauge baffle; The screw and the lock nut fasten and fasten the pad, the under-bolt plate, the guide rail, the insulating block and the elastic strip; the screw provided with the fourth rotation-stopping portion is placed in the first rotation-stop hole of the lock nut, and the lock The first rotation stop portion of the tightening nut corresponds to the positional relationship of the fourth rotation stop portion of the screw; the resisting portion and the rotation preventing groove cooperate to restrain the rotation of the screw relative to the backing plate; The rotation sleeve is installed outside the screw provided with the fourth rotation stop portion and placed in the first rotation stop hole; the rotation sleeve is axially restrained outside the screw provided with the fourth rotation stop portion and the first rotation stop hole The first rotation stop of the lock nut cooperates with the second rotation stop of the rotation sleeve to restrain the rotation of the lock nut relative to the rotation sleeve, and the third rotation stop of the rotation sleeve cooperates with the fourth rotation end of the screw The screw rotates relative to the rotation sleeve, and the screw and the lock nut are non-rotatably mounted together. A track structure comprising the fastening joint assembly according to any one of claims 1 to 11, characterized in that the track structure further comprises a pre-embedded sleeve, a backing plate for carrying the rail; Providing a through hole that cooperates with the first external thread portion of the screw on both sides of the pad; The pre-embedded sleeve is embedded in a blind hole on the foundation corresponding to the through hole of the backing plate, and a hole is arranged in the pre-embedded sleeve, and the hole of the pre-embedded sleeve is provided with the expansion sleeve resisting portion. Annular resisting groove; The first external thread portion of the screw is threadedly connected to the driving nut through the expansion sleeve, and the resisting portion of the screw and the first driving taper surface, the expansion sleeve and the driving nut are installed in the hole in the pre-embedded sleeve; The first expansion cone of the expansion sleeve is hung on the first driving cone surface of the screw, and the second expansion cone of the expansion sleeve is huged on the second driving cone surface of the driving nut; the first driving cone surface is relatively first The expansion taper surface slides, the second drive cone surface drives the expansion sleeve expansion relative to the second expansion cone surface sliding, and in the fully expanded state of the expansion sleeve, the expansion sleeve resisting portion extends into the resisting groove of the pre-embedded sleeve to pass through the surface and the surface Resist Forming a snap, the expansion sleeve resisting portion on the expansion sleeve is axially resisted by the upper resisting groove of the pre-embedded sleeve, and the screw, the expansion sleeve, the driving nut and the pre-embedded sleeve are fixedly connected together, and the resisting portion of the screw is expanded by the sleeve Axial resistance; The first external thread portion of the screw is threadedly connected to the lock nut through a through hole in the backing plate, the lock nut axially resists the backing plate, and the screw, the expansion sleeve and the lock nut are fastened to the backing plate and the pre-embedded sleeve connected. A crankshaft linkage mechanism comprising the fastening connection assembly according to any one of claims 1 to 11, wherein the crankshaft linkage mechanism comprises a crankshaft, a link set, and a fastening connection assembly; The connecting rod set comprises a connecting rod body, a connecting rod big head cover and a connecting rod big head bearing bush; the connecting rod body comprises a connecting rod big head and a connecting rod small head, the connecting rod has a through hole on the big head; the connecting rod big head cover is provided with a through hole; The fastening connection assembly further includes a rotation preventing sleeve limiting member; The connecting rod big head bush is wrapped outside the crankshaft, and the connecting rod big head and the connecting rod big head cover are wrapped outside the connecting rod big head bush; The screw has one end of the first external threaded portion passing through the through hole on the big end of the connecting rod, and the through hole on the big head cover of the connecting rod is screwed with the locking nut, and the screw and the locking nut tightly close the connecting rod body and the connecting rod Solidally coupled together; a screw provided with a fourth rotation stop is placed in the first rotation stop hole of the lock nut, and the first rotation stop of the lock nut corresponds to the positional relationship of the fourth rotation stop of the screw; The rotation preventing sleeve is installed outside the screw provided with the fourth rotation preventing portion and placed in the first rotation preventing hole, and the rotation preventing sleeve limiting member is mounted with the screw or is mounted with the connecting rod big head cover to the rotation preventing sleeve Side axial limit; The first rotation stop of the lock nut cooperates with the second rotation stop of the rotation sleeve to restrain the rotation of the lock nut relative to the rotation sleeve, and the third rotation end of the rotation sleeve cooperates with the fourth rotation end of the screw to restrain the screw The screw and the lock nut are non-rotatably mounted together with respect to the rotation of the rotation sleeve. A bone connecting device comprising the fastening connection assembly according to any one of claims 1 to 11, wherein the bone connecting device further comprises a connecting member; the fastening connecting assembly further comprising a rotation preventing sleeve Limiting piece Two or more through holes are formed on the connecting member for engaging with the first external thread portion of the screw; the through holes on one of the connecting members correspond to one of the screw, the lock nut, the rotation preventing sleeve and the rotation preventing sleeve Limiting piece The first external thread portion of the screw is threadedly connected with the threaded through hole of the lock nut through a corresponding through hole in the connecting member, and the screw provided with the fourth rotation preventing portion is placed in the first rotation preventing hole of the lock nut, the lock The first rotation stop of the tightening nut corresponds to the positional relationship of the fourth rotation stop of the screw; the rotation sleeve is installed outside the screw provided with the fourth rotation stop and is placed in the first rotation stop hole; The component is mounted on the screw or the connecting member to axially limit the rotation sleeve; the third rotation stop portion and the fourth rotation rotation portion cooperate to restrain the rotation sleeve from rotating relative to the screw, and the first rotation stop portion cooperates with the second rotation rotation portion The restraining lock nut rotates relative to the rotation sleeve, and the screw and the lock nut are non-rotatably mounted together. A bone joining method using the bone connecting device of the fastening joint assembly according to claim 18, wherein the connecting method comprises the following steps: The first external thread portion of one screw passes through the through hole in the connecting member, and one broken bone is screwed to the lock nut, and the screw fastens the broken bone to the connecting member; the first external thread of the other screw Passing through another through hole in the connecting member, and the other broken bone is screwed to the lock nut, and the screw fastens the other broken bone to the connecting member; a screw provided with a fourth rotation stop portion is disposed in the corresponding first rotation stop hole, and a fourth rotation stop portion of the screw corresponds to a positional relationship of the first rotation stop portion of the corresponding first rotation stop hole; Mounting the anti-rotation sleeve outside the screw provided with the fourth rotation-stopping portion and placing it in the first rotation-stopping hole; mounting the anti-rotation sleeve limiting member on the screw or the connecting member to axially limit the rotation-proof sleeve; The third rotation stop portion and the fourth rotation rotation portion cooperate to restrain the rotation sleeve from rotating relative to the screw, and the first rotation stop portion and the second rotation rotation portion cooperate to restrain the rotation of the lock nut relative to the rotation sleeve, and the screw and the lock nut are non-rotatably Installed together.

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