CN119981936A - Back support of tunnel boring machine and tunnel boring machine - Google Patents
Back support of tunnel boring machine and tunnel boring machine Download PDFInfo
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- CN119981936A CN119981936A CN202510151457.0A CN202510151457A CN119981936A CN 119981936 A CN119981936 A CN 119981936A CN 202510151457 A CN202510151457 A CN 202510151457A CN 119981936 A CN119981936 A CN 119981936A
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Abstract
The invention provides a rear support of a heading machine and the heading machine, and belongs to the field of tunnel construction equipment. The rear support of the heading machine comprises a support arm assembly, a vertical direction adjusting device and a horizontal direction adjusting device, wherein the support arm assembly comprises a support arm installation seat and a moving seat which is arranged on the support arm installation seat in a guiding manner and can move along the left-right direction on the support arm installation seat, the vertical direction adjusting device and the horizontal direction adjusting device are both arranged on the moving seat, a moving driving device for driving the moving seat to move is arranged on the support arm installation seat, and a supporting structure for supporting the tunnel wall leftwards and rightwards is arranged on the support arm installation seat. The heading machine comprises the rear support of the heading machine. According to the invention, the vertical direction adjusting device and the horizontal direction adjusting device are arranged on the movable seat which can move left and right on the support arm installation seat, so that the movable seat can be utilized to drive the tail end of the main beam or the inner side wall to have larger left and right deflection amplitude, and a shoe supporting tool is not required, so that the construction efficiency is improved.
Description
Technical Field
The invention belongs to the field of tunnel construction equipment, and particularly relates to a rear support of a heading machine and the heading machine.
Background
The full-section hard rock tunnel boring machine is TBM for short, and is special equipment for tunnel excavation in hard rock areas. According to the working principle and structural form of the TBM, the TBM comprises a shield type TBM and an open type TBM, and the open type TBM is divided into a Kai type TBM and a girder type TBM. The tail end of the inner side or the main beam of the open TBM is provided with a rear support for supporting the inner side or the main beam when the TBM changes steps.
The conventional rear support comprises a base and supporting legs which are arranged on the base and are downwards or obliquely downwards supported on the tunnel wall, and in order to meet the horizontal and vertical direction adjustment requirements, an oil cylinder for horizontal direction adjustment and vertical direction adjustment is arranged between the base and a main beam or an inner side wall, for example, the rear support in a Shan Kai supported type full-section tunnel hard rock tunneling machine disclosed in Chinese patent application publication No. CN202788865U is authorized.
The traditional rear support has some problems in the use process, for example, under the condition that rock strata are broken, the bottom slag accumulation of a tunnel is more, the bottom slag accumulation needs to be cleaned in time in the tunneling process to ensure normal tunneling, but the traditional rear support can be directly supported on the slag accumulation, on one hand, the slag removal operation can be influenced, on the other hand, the slag accumulation at the bottom of the tunnel also influences the support stability of the rear support, the extension and shortening of the horizontal steering cylinder can control the left-right swing of the tail end of a girder or an inner side wall so as to realize the change of the tunneling direction of the tunneling machine, but the horizontal steering amplitude is limited, because the upper end of the vertical steering cylinder needs to deflect in the corresponding direction when the tail end of the girder or the inner side wall swings left and right, the inclination amplitude of the vertical steering cylinder is larger, and therefore, the girder or the inner side wall can collide and interfere with the vertical steering cylinder.
The utility model patent application of China with the prior authorization bulletin number of CN222162616U discloses a rear support of a heading machine and the heading machine, wherein the rear support comprises a support arm assembly, a horizontal direction-adjusting oil cylinder and a vertical direction-adjusting oil cylinder which are connected between the support arm assembly and an inner side wall, the support arm assembly comprises a support arm mounting seat and two support oil cylinders which are respectively telescopic along the left and right directions, the fixed end of each support oil cylinder is connected to the support arm mounting seat, and the telescopic end is connected with a support body which can be abutted against the wall of a tunnel. In addition, when steering is needed, one of the left and right support cylinders can be shortened, the other support cylinder is extended to enable the support arm mounting seat to integrally move left and right, the assistance of the horizontal steering cylinder is carried out, and a larger steering range can be obtained.
However, the horizontal steering range of the rear support is still limited, and when the main beam or the tail end of the inner side wall is required to have larger amplitude deflection to obtain smaller turning radius under special conditions, the construction requirement is still difficult to meet. The main reason is that in order to ensure construction safety, the related construction regulations require that a distance of more than 300mm is kept between a support body at the end of the support cylinder and the tunnel wall during step change, which results in a smaller cylinder installation distance of the support cylinder, that is, a smaller distance between the fixed end and the telescopic end of the support cylinder when the support cylinder is in a retracted state, which also means that the stroke of the support cylinder is shorter, so that when the swing amplitude of the tail end of the main beam or the inner side wall is larger in the horizontal direction, one support cylinder needs to be fully retracted to enable the tail end of the main beam or the inner side wall to approach to one side of the tunnel wall as much as possible, and the other support cylinder cannot be braced on the tunnel wall due to insufficient stroke.
In the face of the situation, the shoe supporting tool is often additionally arranged on the supporting body which cannot be tightly supported on the hole wall on the construction site, the length of the shoe supporting tool is larger than or equal to the distance between the supporting body which cannot be tightly supported on the hole wall and the hole wall, and normal step change is further guaranteed. In the tunneling process, the turning radius of the tunnel may be changed, and then the shoe supporting tools with different sizes need to be replaced according to actual requirements, or the turning direction is changed, and then the shoe supporting tools on the left need to be replaced to the right according to working conditions, or the shoe supporting tools on the right need to be replaced to the left. The shoe supporting tool is additionally arranged, so that the construction requirement can be met, but the shoe supporting tool can be continuously replaced and adjusted in a long time, and the construction efficiency is seriously affected.
Disclosure of Invention
The invention aims to provide a rear support of a heading machine and the heading machine, which are used for solving the technical problem that the construction efficiency is affected due to the fact that a shoe supporting tool is additionally arranged when the direction of a small turning radius of the rear support in the prior art.
Another object of the present invention is to provide a heading machine, so as to solve the above technical problems.
In order to achieve the above purpose, the technical scheme of the rear support of the heading machine provided by the invention is as follows:
The utility model provides a support behind entry driving machine, includes support arm subassembly, vertical direction adjusting device and level direction adjusting device, the support arm subassembly includes support arm mount pad and direction setting on the support arm mount pad and can follow the removal seat of left and right direction removal on the support arm mount pad, vertical direction adjusting device and level direction adjusting device all install on removing the seat, be provided with the removal drive arrangement who is used for driving to remove the seat and remove on the support arm mount pad, be provided with the bearing structure who is used for propping up the tunnel cave wall left and right on the support arm mount pad.
As a further improvement, the movable seat is of a cylindrical structure and is sleeved on the outer side of the support arm mounting seat.
As a further improvement, a long hole with the length direction being in the same direction as the left and right direction is formed in the movable seat, a connecting support is arranged on the support arm mounting seat and is positioned in the long hole, one end, far away from the support arm mounting seat, of the connecting support extends out of the movable seat and is connected with the movable driving device, and an output support used for being connected with the output end of the movable driving device is arranged on the movable seat.
As a further improvement, one end of the support arm installation seat is provided with a first support body for supporting the hole wall on the corresponding side, the other end of the support arm installation seat is provided with a telescopic arm matched with the support arm installation seat along the left-right direction, one end of the telescopic arm, which is far away from the support arm installation seat, is provided with a second support body for supporting the hole wall on the corresponding side, a telescopic driving device for driving the telescopic arm to stretch out and draw back is arranged between the telescopic arm and the support arm installation seat, and the telescopic arm, the telescopic driving device, the first support body and the second support body form a supporting structure.
As a further improvement, the support arm mounting seat and the telescopic arm are of cylindrical structures, the telescopic arm is nested at the inner side of the support arm mounting seat, sealing plates are arranged at the ends, away from each other, of the telescopic arm and the support arm mounting seat, and two ends of the telescopic driving device are connected with the sealing plates of the telescopic arm and the sealing plates of the support arm mounting seat respectively.
As a further improvement, an auxiliary support body is arranged on the inner side wall of one end of the movable seat, which is close to the telescopic arm, and the auxiliary support body is in sliding fit with the outer side wall of the telescopic arm and provides support for the corresponding end of the movable seat.
As a further improvement, the auxiliary support body is a support ring.
As a further improvement, the auxiliary support body is detachably connected with the movable seat.
As a further improvement, the two ends of the support arm mounting seat are respectively provided with a first extension arm and a second extension arm which are matched with the support arm mounting seat along the left-right direction, a telescopic driving device is arranged between the first extension arm and the support arm mounting seat and between the second extension arm and the support arm mounting seat, the end parts of the first extension arm and the second extension arm are respectively provided with a first supporting body and a second supporting body which are used for supporting the hole wall on the corresponding side, and the first extension arm, the second extension arm, the first extension driving device, the second extension driving device, the first supporting body and the second supporting body form a supporting structure.
The invention has the beneficial effects that the rear support of the heading machine provided by the invention belongs to the invention creation of element relation change. The movable seat in the rear support of the heading machine can be driven by the movable driving device to move steplessly, so that the tail end of the inner side can be driven to swing at any amplitude, shoe supporting tools in the prior art are not required to be used, convenience in construction is effectively enhanced, the dismounting work of the shoe supporting tools is omitted, the construction time is saved, and the overall construction efficiency is improved.
In order to achieve the above purpose, the technical scheme of the heading machine provided by the invention is as follows:
the utility model provides a development machine, including girder or interior first and the back support of setting at girder or interior first tail end, the back support includes the support arm subassembly, vertical direction adjusting device and level direction adjusting device, the support arm subassembly includes support arm mount pad and direction setting on the support arm mount pad and can follow the removal seat of controlling direction removal on the support arm mount pad, vertical direction adjusting device and level direction adjusting device all install on removing the seat, be provided with the removal drive arrangement that is used for driving to remove the seat on the support arm mount pad, be provided with the bearing structure who is used for propping up the tunnel portal wall left and right on the support arm mount pad.
As a further improvement, the movable seat is of a cylindrical structure and is sleeved on the outer side of the support arm mounting seat.
As a further improvement, a long hole with the length direction being in the same direction as the left and right direction is formed in the movable seat, a connecting support is arranged on the support arm mounting seat and is positioned in the long hole, one end, far away from the support arm mounting seat, of the connecting support extends out of the movable seat and is connected with the movable driving device, and an output support used for being connected with the output end of the movable driving device is arranged on the movable seat.
As a further improvement, one end of the support arm installation seat is provided with a first support body for supporting the hole wall on the corresponding side, the other end of the support arm installation seat is provided with a telescopic arm matched with the support arm installation seat along the left-right direction, one end of the telescopic arm, which is far away from the support arm installation seat, is provided with a second support body for supporting the hole wall on the corresponding side, a telescopic driving device for driving the telescopic arm to stretch out and draw back is arranged between the telescopic arm and the support arm installation seat, and the telescopic arm, the telescopic driving device, the first support body and the second support body form a supporting structure.
As a further improvement, the support arm mounting seat and the telescopic arm are of cylindrical structures, the telescopic arm is nested at the inner side of the support arm mounting seat, sealing plates are arranged at the ends, away from each other, of the telescopic arm and the support arm mounting seat, and two ends of the telescopic driving device are connected with the sealing plates of the telescopic arm and the sealing plates of the support arm mounting seat respectively.
As a further improvement, an auxiliary support body is arranged on the inner side wall of one end of the movable seat, which is close to the telescopic arm, and the auxiliary support body is in sliding fit with the outer side wall of the telescopic arm and provides support for the corresponding end of the movable seat.
As a further improvement, the auxiliary support body is a support ring.
As a further improvement, the auxiliary support body is detachably connected with the movable seat.
As a further improvement, the two ends of the support arm mounting seat are respectively provided with a first extension arm and a second extension arm which are matched with the support arm mounting seat along the left-right direction, a telescopic driving device is arranged between the first extension arm and the support arm mounting seat and between the second extension arm and the support arm mounting seat, the end parts of the first extension arm and the second extension arm are respectively provided with a first supporting body and a second supporting body which are used for supporting the hole wall on the corresponding side, and the first extension arm, the second extension arm, the first extension driving device, the second extension driving device, the first supporting body and the second supporting body form a supporting structure.
The development machine has the beneficial effects that the development machine provided by the invention belongs to the invention creation of element relation change. The movable seat in the rear support of the heading machine can be driven by the movable driving device to move steplessly, so that the tail end of the inner side can be driven to swing at any amplitude, shoe supporting tools in the prior art are not required to be used, convenience in construction is effectively enhanced, the dismounting work of the shoe supporting tools is omitted, the construction time is saved, and the overall construction efficiency is improved.
Drawings
FIG. 1 is a schematic view of the structure of the rear support of the heading machine according to the invention in the use state of example 1;
FIG. 2 is a cross-sectional view of example 1 of the rear support of the heading machine of the present invention;
FIG. 3 is a cross-sectional view of a heading machine of example 1 of a rear support of the heading machine of the present invention as it is heading forward;
FIG. 4 is a cross-sectional view of a development machine of example 1 of a rear support for a development machine of the present invention in a step change;
FIG. 5 is a cross-sectional view of a heading machine of example 1 of a rear heading machine support of the present invention in steering;
FIG. 6 is a cross-sectional view of example 3 of the rear support of the heading machine of the present invention;
FIG. 7 is a cross-sectional view of one embodiment of example 5 of the rear support of the heading machine of the present invention;
FIG. 8 is a cross-sectional view of another embodiment of the rear support of the heading machine of the present invention, example 5;
fig. 9 is a cross-sectional view of example 6 of the rear support of the heading machine of the present invention.
Reference numerals illustrate:
1. an inner Kai; the device comprises a vertical direction adjusting device, a horizontal direction adjusting device, a supporting arm installing seat, a moving driving device, a 7 long hole, a 8 connecting support, a 9 output support, a 10 telescopic arm, a 11 telescopic driving device, a 12 first supporting body, a 13 second supporting body, a 14 limiting step, a 15 auxiliary supporting body, a 16 first extending arm, a 17 second extending arm, a 18 first extending driving device, a 19 second extending driving device.
Detailed Description
The present invention is described in further detail below with reference to examples.
In order to solve the problems in the prior art, the basic idea of the invention is to move the vertical direction adjusting device and the horizontal direction adjusting device on the supporting arm installation seat along the left-right direction so as to obtain a larger direction adjusting range without setting a shoe supporting tool.
Specific example 1 of a rear support of a heading machine provided by the invention:
The invention takes the tunneling direction of the tunneling machine as the front, and the left-right direction is in the horizontal plane and is vertical to the front-back direction.
Referring to fig. 1 and combining fig. 2, the rear support of the heading machine comprises a support arm assembly, a vertical direction adjusting device 2 and a horizontal direction adjusting device 3, wherein the lower end of the vertical direction adjusting device 2 is connected with the support arm assembly, the upper end of the vertical direction adjusting device can be connected with an inner side wall 1 through an ear seat, one end of the horizontal direction adjusting device 3 is connected with the support arm assembly, and the other end of the horizontal direction adjusting device can be connected with the inner side wall 1 through the ear seat. In this embodiment, the rear support used in the kava TBM is taken as an example, and in other embodiments, the vertical steering device 2 and the horizontal steering device 3 can be connected to the main beam through the ear mount respectively. The vertical direction-adjusting device 2 and the horizontal direction-adjusting device 3 are oil cylinders, and in other embodiments, the vertical direction-adjusting device and the horizontal direction-adjusting device can be air cylinders or electric cylinders.
The support arm assembly comprises a support arm mounting seat 4, a movable seat 5, a movable driving device 6 and a support structure.
The support arm mount 4 has a cylindrical structure extending in the left-right direction, and is square in shape as sectioned by a surface perpendicular to the left-right direction.
The moving seat 5 is arranged on the support arm mounting seat 4 in a guiding manner and can move on the support arm mounting seat 4 along the left-right direction, specifically, the moving seat 5 is also of a tubular structure with a square section, and the moving seat 5 is sleeved on the outer side of the support arm mounting seat 4. Since the cross sections of the movable seat 5 and the support arm mounting seat 4 are square, the movable seat 5 and the support arm mounting seat 4 can be prevented from rotating relatively.
The movement driving device 6 is used for driving the movement seat 5 to move left and right. The movable seat 5 is provided with a long hole 7, the length direction of the long hole 7 is in the same direction as the left-right direction, the support arm mounting seat 4 is provided with a connecting support 8, the connecting support 8 is positioned in the long hole 7, one end of the connecting support 8, far away from the support arm mounting seat 4, extends out of the movable seat 5, the movable seat 5 is provided with an output support 9, the movable driving device 6 is an oil cylinder, a cylinder body of the movable driving device 6 is connected with the connecting support 8 through a pin shaft, and the output end of the movable driving device 6 is connected with the output support 9 through a pin shaft. The connecting support 8 is arranged in the long hole 7, so that the connecting support 8 can be arranged close to the middle of the supporting arm assembly, and the matching of the connecting support 8 and the long hole 7 plays a role in guiding the movable seat 5.
The support structure is used for supporting the tunnel wall leftwards and rightwards, and particularly comprises a telescopic arm 10, a telescopic driving device 11, a first support body 12 and a second support body 13 in the embodiment. The telescopic boom 10 is of a tubular structure with a square section, the telescopic boom 10 is nested to be arranged on the inner side of the support arm installation seat 4 and forms guiding fit with the support arm installation seat 4, one end of the support arm installation seat 4 is closed through a sealing plate, the other end of the support arm installation seat is open, the telescopic boom 10 is positioned at the open end of the support arm installation seat 4 and can extend out of the end and retract into the support arm installation seat 4, and one end of the telescopic boom 10 positioned outside the support arm installation seat 4 is also closed through the sealing plate. The inner side of the support arm mount 4 is provided with a limit step 14 for being in stop fit with the telescopic arm 10 after the telescopic arm 10 is retracted into the support arm mount 4, so as to limit the retraction direction of the telescopic arm 10. The telescopic driving device 11 is an oil cylinder, the telescopic driving device 11 is positioned on the inner sides of the telescopic arm 10 and the support arm mounting seat 4, one end of the telescopic driving device 11 is connected with a sealing plate on the telescopic arm 10, and the other end of the telescopic driving device is connected with a sealing plate on the support arm mounting seat 4. The first support body 12 is fixedly arranged at one end of the support arm mounting seat 4 where the sealing plate is arranged, and the second support body 13 is positioned at one end of the telescopic arm 10 where the sealing plate is arranged.
In the forward tunneling process of the tunneling machine applied to the rear support of the tunneling machine, referring to fig. 3, the rear support of the tunneling machine does not support the tunnel wall and moves forward along with the inner side wall 1, the telescopic arm 10 is retracted into the support arm mount 4 substantially completely, and the center of the moving mount 5 in the left-right direction coincides with the center of the support arm mount 4in the left-right direction, so that the left-right length of the whole support arm assembly is in the shortest state.
When a step change is needed, referring to fig. 4, the telescopic arm 10 extends out of the support arm mounting seat 4, so that the left-right length of the whole support arm assembly can be longest, and meanwhile, the movable seat 5 moves on the support arm mounting seat 4 towards the direction of the telescopic arm 10, so that the combined body formed by the support arm mounting seat 4 and the telescopic arm 10 keeps centered in the left-right direction while being elongated, and further, the first support body 12 and the second support body 13 can synchronously tighten the hole wall.
After the hole wall is tightly supported, the movable seat 5 is positioned in the middle of the combined body formed by the support arm mounting seat 4 and the telescopic arm 10, when the direction adjustment is needed left and right, the movable seat 5 is directly driven to move towards one end of the support arm mounting seat 4 by the movable driving device 6, and then the movable seat 5 can be used for driving the tail end of the inner side wall 1 to swing towards the corresponding direction, so that the direction adjustment process is completed.
Compared with the prior art, the telescopic arm 10 does not need to be telescopic relative to the support arm mounting seat 4 in the direction adjusting process, so that the stroke problem of the telescopic driving device 11 can be avoided. In addition, in the present embodiment, only one telescopic arm 10 and only one telescopic driving device 11 are provided, so that the installation space of the telescopic driving device 11 in the left-right direction can be saved, and therefore, the combined body of the support arm installation seat 4 and the telescopic arm 10 can obtain a longer extension length under the condition that the size of the combined body is unchanged when the combined body is contracted, so as to adapt to tunnel construction with a larger diameter range.
And remove seat 5 can carry out stepless removal under the drive of removal drive arrangement 6 to can drive the tail end of interior Kai 1 and carry out the swing of arbitrary range, need not use the support boots frock in the prior art, consequently strengthened the convenience of construction effectively, saved the dismouting work of propping boots frock moreover, save engineering time, improve holistic efficiency of construction.
In addition, because the range that removes seat 5 in the left and right directions is great, consequently need not the assistance of horizontal steering device 3 can make the tail end swing range of interior first of a square, satisfy less turning radius's construction demand, therefore vertical steering device 2 can not take place the slope in the in-process of steering, this is more favourable to the atress of vertical steering device 2, on the one hand can reduce the load that vertical steering device 2 born, on the other hand also can avoid the ear seat between vertical steering device 2 and interior first of a square 1 and the ear seat between vertical steering device 2 and the support arm subassembly to receive great tangential stress and damage.
In another implementation manner of this embodiment, referring to fig. 5, when the left and right steering is needed, the moving driving device 6 is used to drive the moving seat 5 to move towards one end of the supporting arm installation seat 4, meanwhile the horizontal steering device 3 is extended to keep the tail end of the inner side 1 still in place, then the moving seat 5 is kept still, the horizontal steering device 3 is shortened, and the tail end of the inner side 1 is pulled towards the direction of shifting the moving seat 5, so that the tail end of the inner side 1 swings. The above process is repeated until the tail end of the inner jersey 1 is shifted to the proper position.
And the tail end of the inner side wall 1 can be driven to swing towards the corresponding direction by the movable seat 5, so that the direction adjusting process is completed.
Specific example 2 of the rear support of the heading machine provided by the invention:
the difference between the embodiment based on embodiment 1 and embodiment 1 is that the moving seat, the support arm mounting seat and the telescopic arm are all cylindrical structures, and the moving seat and the support arm mounting seat are guided by the cooperation of the connecting support and the long hole in the embodiment.
Specific example 3 of the rear support of the heading machine provided by the invention:
The present embodiment is based on embodiment 1, and differs from embodiment 1 in that, referring to fig. 6, the moving seat 5 in the present embodiment is not provided with a long hole 7, and the connection support 8 in the present embodiment is provided at an end of the support arm mount 4 remote from the telescopic arm 10.
Specific example 4 of the rear support of the heading machine provided by the invention:
The difference between the present embodiment and embodiment 1 is that the support arm mount, the movable base, and the telescopic arm are all non-cylindrical solid structures in the present embodiment based on embodiment 1.
Specifically, the upper surface and the lower surface of the support arm installation seat are both provided with dovetail-shaped guide grooves extending in the left-right direction, the lower side of the movable seat is provided with guide rails for guiding and matching with the guide grooves on the upper surface of the support arm installation seat, and the upper side of the telescopic arm is provided with guide rails for guiding and matching with the guide grooves on the lower surface of the support arm installation seat. The movable driving device and the telescopic driving device are respectively connected between the movable seat and the support arm installation seat and between the telescopic arm and the support arm installation seat in a hinged mode.
Concrete example 5 of the rear support of the heading machine provided by the invention:
The difference between this embodiment and embodiment 1 is that, referring to fig. 7, an auxiliary supporting body 15 is disposed on the inner side of the end of the movable seat 5, which is close to the telescopic arm 10, in this embodiment, the auxiliary supporting body 15 is slidably engaged with the outer side wall of the telescopic arm 10, and the auxiliary supporting body 15 is used for supporting the corresponding end of the movable seat 5.
In embodiment 1, the end of the movable seat 5 near the telescopic arm 10 is not in direct contact with the telescopic arm 10, so when the movable seat 5 moves toward the telescopic arm 10, the corresponding end of the movable seat 5 will be in a suspended state, and after long-term use, the end of the movable seat 5 may be partially deformed by the downward pressure of the vertical direction-adjusting device 2, and thus it is difficult to slide on the support arm mounting seat 4 smoothly. Moreover, because the top of the movable seat 5 is subjected to the pressure of the vertical direction adjusting device 2, the top of the movable seat 5 and one end of the support arm installation seat 4, which is close to the telescopic arm 10, are easy to be subjected to eccentric wear, so that the service life of the rear support is further influenced. In this embodiment, the auxiliary supporting body 15 is used to support the corresponding end of the movable seat 5, so as to avoid deformation of the movable seat 5, and also avoid eccentric wear between the movable seat 5 and the supporting arm mounting seat 4, so as to ensure that the movable seat 5 has a longer service life.
Specifically, the auxiliary supporting body 15 is a supporting ring, and in this embodiment, since the sections of the movable seat 5 and the telescopic arm 10 are both square, the auxiliary supporting body 15 is a square supporting ring, so as to ensure that the auxiliary supporting body 15 can provide good support for all directions of the movable seat 5. The supporting ring also has the function of reinforcing the corresponding end of the movable seat 5, so that the deformation resistance of the corresponding end of the movable seat 5 is improved, and the corresponding end of the movable seat 5 is further prevented from being deformed.
In addition, the auxiliary support 15 in this embodiment also has the function of scraping off the debris such as sand and stones on the telescopic arm 10 and preventing the debris from entering the gap between the telescopic arm 10 and the support arm mount 4. If sundries enter the gap between the telescopic arm 10 and the support arm mounting seat 4, the matching surface of the telescopic arm 10 and the support arm mounting seat 4 will be worn too fast, the service life of the rear support is affected, and the auxiliary support body 15 is arranged to prolong the service life of the rear support.
In this embodiment, the auxiliary supporting body 15 is detachably connected with the movable seat 5 through a bolt, specifically, a threaded hole for installing the bolt is provided at a corresponding end of the movable seat 5 along the left-right direction, and a corresponding connecting hole for passing the bolt is provided on the auxiliary supporting body 15. Since the auxiliary supporting body 15 needs to bear pressure and need to scrape sundries on the telescopic arm 10, the abrasion speed is high, and the auxiliary supporting body is arranged in a detachable structure so as to be convenient for quick replacement when the auxiliary supporting body fails.
Referring to fig. 8, in other embodiments of the present embodiment, in order to avoid impurities entering between the movable seat 5 and the support arm mounting seat 4, the long hole 7 may not be provided on the movable seat 5, and the connection support 8 may be provided at an end of the support arm mounting seat 4 away from the telescopic arm 10.
In other embodiments of the present embodiment, the auxiliary supporting body 15 may be in a block shape and mounted only at the top position of the movable base 5.
In other embodiments of this embodiment, the auxiliary support 15 is made of a wear-resistant material, so that it has a long service life and can be connected to the movable seat 5 in a non-detachable manner.
Specific example 6 of the rear support of the heading machine provided by the invention:
the present embodiment is based on embodiment 1, and differs from embodiment 1 in that the support structure in the present embodiment comprises a first extension arm 16, a second extension arm 17, a first extension driving means 18, a second extension driving means 19, a first support body 12 and a second support body 13, see fig. 9.
The first extension arm 16 and the second extension arm 17 are respectively installed at two ends of the support arm installation seat 4 in a guiding manner, the first extension driving device 18 is respectively arranged between the first extension arm 16 and the support arm installation seat 4 and between the second extension arm 17 and the support arm installation seat 4, and the first supporting body 12 and the second supporting body 13 are respectively arranged at the ends of the first extension arm 16 and the second extension arm 17 and are used for supporting with the corresponding side hole walls.
Specifically, the support arm mount pad 4, first extension arm 16, second extension arm 17 are tubular structure, and first extension arm 16 and second extension arm 17 nest respectively in support arm mount pad 4's both ends inboard, and support arm mount pad 4's middle part is provided with the division board that is used for dividing its inner chamber into two parts, and first extension arm 16 and second extension arm 17's tip all is provided with the shrouding, and first extension drive arrangement 18 connects between first extension arm 16's shrouding and baffle, and second extension drive arrangement 19 connects between second extension arm 17's shrouding and baffle.
The concrete embodiment of the heading machine provided by the invention comprises the following steps:
The tunneling machine comprises a host and a rear matching part, wherein the host comprises a cutter head, a shield body and an inner shield, a rear support is arranged at the tail part of the inner shield, and the rear support is the tunneling machine rear support in the embodiment of the tunneling machine rear support, and is not repeated.
It should be noted that the above-mentioned embodiments are merely preferred embodiments of the present invention, and the present invention is not limited to the above-mentioned embodiments, but may be modified without inventive effort or equivalent substitution of some of the technical features thereof by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202510151457.0A CN119981936A (en) | 2025-02-11 | 2025-02-11 | Back support of tunnel boring machine and tunnel boring machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510151457.0A CN119981936A (en) | 2025-02-11 | 2025-02-11 | Back support of tunnel boring machine and tunnel boring machine |
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| CN119981936A true CN119981936A (en) | 2025-05-13 |
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| CN202510151457.0A Pending CN119981936A (en) | 2025-02-11 | 2025-02-11 | Back support of tunnel boring machine and tunnel boring machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119754791A (en) * | 2025-01-06 | 2025-04-04 | 中铁工程装备集团有限公司 | Back support of tunnel boring machine and tunnel boring machine |
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2025
- 2025-02-11 CN CN202510151457.0A patent/CN119981936A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119754791A (en) * | 2025-01-06 | 2025-04-04 | 中铁工程装备集团有限公司 | Back support of tunnel boring machine and tunnel boring machine |
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