CN114439839A - An anti-detachment connection structure and its components - Google Patents

Abstract

The invention relates to the technical field of mechanical connection structures, in particular to an anti-disconnection connection structure and components thereof. The anti-disconnection connection structure includes a first connection end, a second connection end and a limit ring; the first connection end has a groove; The two connecting ends are sleeved on the first connecting end, and at least two anti-separation holes are arranged in the circumferential direction of the second connecting end; There is a limit hole matched with the anti-drop hole; it also includes a first limit piece and a second limit piece, one end of the first limit piece passes through the anti-drop hole and abuts the groove, and the first limit piece The other end of the second limiting piece is located in the inner surface of the limiting ring; one end of the second limiting piece is abutted with the groove through the anti-fall hole, and the other end of the second limiting piece is located in the limiting hole. After the installation is completed, the inner surface of the limiting ring of the first limiting piece connected with the second connecting end is restrained and always located in the groove of the first connecting end to ensure that the second connecting end and the first connecting end will not fall off.

Description

An anti-detachment connection structure and its components

technical field

The invention relates to the technical field of mechanical connection structures, in particular to an anti-disconnection connection structure.

Background technique

In the technical field of mechanical connection structures, two connection ends need to be connected together, and the connection structure is often easy to fall off. Especially in the process of underground construction, the tools need to be connected to each other. Take the connection between the ball seat adapter and the setting tool as an example. The inner thread of the adapter push tube and the outer thread of the setting tool are connected and fixed by three set screws. Affected by the complicated working conditions in the well, the set screw may fall off, which in turn causes the internal thread of the adapter pusher to withdraw from the external thread of the setting tool, resulting in a well falling accident.

SUMMARY OF THE INVENTION

The present invention provides an anti-detachment connection structure to solve the above technical problems, so as to improve the anti-detachment effect of the connection between tools.

The technical solutions of the present invention to solve the above technical problems are as follows: an anti-detachment connection structure, comprising a first connection end, a second connection end and a limit ring;

the first connecting end has a groove;

The second connecting end is sleeved on the first connecting end, and at least two anti-detachment holes are provided in the circumferential direction of the second connecting end;

The limit ring is sleeved on the circumferential direction of the anti-drop hole of the second connection end, and at least one limit hole matching the anti-drop hole is provided on the limit ring;

It also includes a first limiting piece and a second limiting piece, one end of the first limiting piece is in contact with the groove through the anti-fall hole, and the other end of the first limiting piece is located at the the inner surface of the limit ring; one end of the second limit piece abuts against the groove through the anti-fall hole, and the other end of the second limit piece is located in the limit hole .

The working principle and beneficial effects of the present invention are as follows: when installing the anti-detachment connection structure, there are one limit hole and two anti-detachment holes, one of which is used to install the first limit piece, and the other is used to install the second limiter. The second connection end is sleeved on the first connection end, wherein the limit ring is sleeved in the circumferential direction of the anti-drop hole of the second connection end; the limiter on the limit ring The position hole is aligned with an anti-separation hole on the second connecting end, and one end of the first position limiter passes through the anti-separation hole and abuts against the groove, because the other end of the first position limiter is located at the groove. In the inner surface of the limit ring, rotate the limit ring so that the limit hole on the limit ring is aligned with another anti-fall hole on the second connecting end, and pass one end of the second limit piece through the The anti-detachment hole is in contact with the groove, so that the other end of the second limiting member is located in the limiting hole. When there are more than two anti-separation holes, there are multiple first limiting members, and it is necessary to install all the first limiting members first, and then install the second limiting members. After the installation is completed, during the working process of the connection structure, when the first limiting member and the second limiting member are slightly loose, the second connecting end and the limiting ring connected with the second limiting member are relatively connected to the first stopper. At this time, the first stopper is restricted by the inner surface of the limiting ring, the second stopper does not retreat substantially, and the second stopper and the first stopper are always located in the groove of the first connecting end , to ensure that the second connection end and the first connection end will not fall off; during the working process of the connection structure, when the second limiter is severely loosened and falls off, the first limiter will also become loose. Since the other end of the first limiting member is located in the inner surface of the limiting ring, the other end of the first limiting member will abut against the inner surface of the limiting ring after the first limiting member is loosened, thereby restricting the rotation of the limiting ring , so that the first stopper will not rotate to the stopper hole, and it also restricts one end of the first stopper from completely falling out of the groove of the first connecting end. At this time, the first stopper is also always located at The groove of the first connection end also ensures that the second connection end and the first connection end will not fall off.

On the basis of the above technical solutions, the present invention can also be improved as follows.

Further, there is one limit hole and multiple anti-drop holes.

The beneficial effect of adopting the above-mentioned further scheme is that only one limiting hole is provided, and during installation, the first limiting members in the anti-detachment holes are installed one by one, and the second limiting members are finally installed.

On the basis of the above technical solutions, the present invention can also be improved as follows.

Further, the anti-detachment hole includes a first anti-detachment hole and a second anti-detachment hole, the anti-detachment hole through which the first limiting member passes is the first anti-detachment hole, and the second position limit The anti-dropping hole through which the piece passes is the second anti-dropping hole;

The limit hole includes a first limit hole and a second limit hole, the limit hole where the other end of the second limit piece is located is the second limit hole, and the rest of the limit holes The hole is the first limit hole;

The number of the first anti-dropping holes and the first limiting holes are equal in number, and they are distributed at the same position on the circumferential direction of the second connecting end and the limiting ring respectively; The number of disengagement holes and the second limit holes are equal; when the first limit holes and the first anti-separation holes are in one-to-one correspondence in the circumferential direction, the second limit holes and the second The anti-shedding holes are staggered in the circumferential direction.

The beneficial effect of adopting the above-mentioned further solution is that it is ensured that the installation of the plurality of first limiting members can be completed at one time, and the second limiting member is finally installed, which improves the installation efficiency.

On the basis of the above technical solutions, the present invention can also be improved as follows.

Further, the number of the second anti-detachment holes and the second limiting holes are multiple, and they are respectively distributed at the same position on the circumferential direction of the second connecting end and the limiting ring.

The beneficial effect of adopting the above-mentioned further solution is that it is convenient to install the second limiting member at one time, and the installation efficiency is further improved.

On the basis of the above technical solutions, the present invention can also be improved as follows.

Further, the grooves are circumferential grooves.

The beneficial effect of adopting the above-mentioned further solution is that the first connection end and the second connection end are facilitated to rotate in the circumferential direction relative to each other.

On the basis of the above technical solutions, the present invention can also be improved as follows.

Further, the second connection end is sleeved on the first connection end by means of screw connection.

The beneficial effect of adopting the above-mentioned further scheme is that the two connecting ends are connected with each other by screw thread, which further improves the reliability of the connection and the anti-dropping effect.

On the basis of the above technical solutions, the present invention can also be improved as follows.

Further, the anti-dropping hole is a threaded hole, and both the first limiting member and the second limiting member are screws.

The beneficial effect of adopting the above-mentioned further scheme is that the installation and disassembly of the two connection ends are facilitated by the connection mode of the thread.

On the basis of the above technical solutions, the present invention can also be improved as follows.

Further, the end position of the second connecting end has an L-shaped concave platform, and the anti-detachment hole is located at the concave platform.

The beneficial effect of adopting the above-mentioned further scheme is that the anti-dropping hole is arranged at the concave platform, which is convenient for installation.

On the basis of the above technical solutions, the present invention can also be improved as follows.

Further, an accommodating cavity for accommodating the other end of the first limiting member is provided on the inner surface of the limiting ring.

The beneficial effect of adopting the above-mentioned further scheme is that the anti-shedding effect is further improved.

The present invention also provides a disengagement prevention assembly, comprising a push cylinder and a seating tool, wherein the push cylinder and the seating tool are connected by the aforementioned disengagement prevention structure, and the seating tool has the first connection end, so The push cylinder has the second connection end.

The beneficial effect of the anti-falling assembly is: after the push cylinder and the seat sealing tool are installed through such an anti-retraction structure, since the limit ring will not rotate in the circumferential direction, the first limit member is always located in the limit ring, ensuring the first limit ring. The second connection end and the first connection end will not fall off.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the first embodiment of the anti-detachment connection structure of the present invention;

Fig. 2 is the view in one direction of embodiment one;

Fig. 3 is a sectional view in the direction AA in Fig. 2;

4 is a cross-sectional view of the first state of the connection when the first embodiment is assembled;

5 is a cross-sectional view of the second state of the connection when the first embodiment is assembled;

6 is a cross-sectional view of the third state of the connection during assembly of the first embodiment;

7 is a cross-sectional view of the fourth state of the connection when the first embodiment is assembled;

8 is a schematic structural diagram of the first connection end of Embodiment 1 of the anti-detachment connection structure of the present invention;

9 is a cross-sectional view of the first state of the connection when the second embodiment is assembled;

10 is a cross-sectional view of the second state of the connection when the second embodiment is assembled;

11 is a cross-sectional view of the third state of the connection when the second embodiment is assembled;

12 is a cross-sectional view of the fourth state of the connection when the second embodiment is assembled;

13 is a cross-sectional view of the fifth state of the connection when the second embodiment is assembled;

14 is a cross-sectional view of the sixth state of the connection when the second embodiment is assembled.

In the accompanying drawings, the list of components represented by each number is as follows:

1. The first connecting end, 11, the groove, 2, the second connecting end, 3, the limit ring, 41, the first limit piece, 42, the second limit piece, 5, the anti-drop hole, 51, the first limit A detachment prevention hole, 52, a second detachment prevention hole, 6, a limit hole, 61, a first limit hole, 62, a second limit hole

Detailed ways

The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples are only used to explain the present invention, but not to limit the scope of the present invention.

Refer to FIG. 1 to FIG. 8 for schematic structural diagrams of the first embodiment of the anti-detachment connection structure of the present invention.

An anti-detachment connection structure includes a first connection end 1, a second connection end 2 and a limit ring 3; the first connection end 1 has a groove 11; the second connection end 2 is sleeved on the first connection end 1, The second connecting end 2 is provided with at least three detachment prevention holes in the circumferential direction, including two first detachment prevention holes 51 and one second detachment prevention hole 52 . The hole is the first anti-detachment hole 51 , and the second anti-detachment hole through which the second limiting member 42 passes is the second anti-detachment hole 52 ; the limiting ring 3 is sleeved on the second connecting end 2 In the circumferential direction of the first anti-dropping hole 51 and the second anti-dropping hole 52 , the limit ring 3 is provided with three three limit holes matching the anti-drop-off holes, including two first limit holes 61 and a second limit hole 61 . Two limiting holes 62 , the limiting hole where the other end of the second limiting member 42 is located is the second limiting hole 62 , and the remaining limiting holes are the first limiting holes 61 ; Also includes a first limiting member 41 and a second limiting member 42, one end of the first limiting member 41 abuts with the groove 11 through the first anti-fall hole 51, and the other end of the first limiting member 41 is located at In the inner surface of the limiting ring 3;

In this embodiment, the two first anti-separation holes 51 and the two first limiting holes 61 are distributed at the same position in the circumferential direction of the second connecting end 2 and the circumferential direction of the limiting ring 3 respectively; When the two first limiting holes 61 and the two first anti-detachment holes 51 are in one-to-one correspondence in the circumferential direction, as shown in FIG. Circumferentially staggered. In the figure, the two first limit holes 61 and the two first anti-drop holes 51 are located below the left and right sides of the figure, because they are distributed in the same position in the circumferential direction of the limit ring 3, so They can be in a one-to-one correspondence. At this time, the second limiting hole 62 and the second anti-detachment hole 52 are both located at the upper position shown in the figure, and are staggered from each other.

When installing the anti-detachment connection structure, the second connection end 2 is sleeved on the first connection end 1, wherein the limit ring 3 is sleeved in the circumferential direction of the anti-detachment hole of the second connection end 2; as shown in Figure 4 As shown, align the two first limit holes 61 on the limit ring 3 with the two first anti-drop holes 51 on the second connecting end 2, and let one end of the first limit member 41 pass through the first anti-drop The hole 51 is in contact with the groove 11, so that the two first limiting members 41 are installed at the same time. The schematic diagram of the installation of the first limiting member 41 is shown in FIG. 5; On the inner surface of the ring 3, rotate the limit ring 3, as shown in FIG. One end of the second limiting member 42 abuts against the groove 11 through the second anti-fall hole 52 , so that the other end of the second limiting member 42 is located in the second limiting hole 62 , and the second limiting member 42 is installed A schematic diagram of the structure is shown in Figure 7. After the installation is completed, during the working process of the connection structure, when the first limiting member 41 and the second limiting member 42 are slightly loose, the second connecting end 2 and the limiting ring 3 connected with the second limiting member 42 There is an integral rotation relative to the first connecting end 1. At this time, the first limiting member 41 is constrained by the inner surface of the positioning ring 3, the second limiting member 42 is not substantially withdrawn, and the second limiting member 42 and the first limiting member The part 41 is always located in the groove 11 of the first connecting end 1 to ensure that the second connecting end 2 and the first connecting end 1 will not fall off; during the working process of the connecting structure, when the second limiting part 42 is seriously loose and falls off At the same time, the first limiting member 41 will also become loose. Since the other end of the first limiting member 41 is located in the inner surface of the limiting ring 3, after the first limiting member 41 is loosened, the other One end will abut with the inner surface of the limit ring 3, thereby restricting the rotation of the limit ring 3, the first limit member 41 will not rotate to the first limit hole 61, and also limit the first limit At this time, the first limiting member 41 is also always located in the groove 11 of the first connecting end 1, which also ensures that the second connecting end 2 The first connection end 1 will not fall off.

In this embodiment, as shown in FIG. 8 , the grooves 11 are circumferential grooves 11 . It is convenient for the first connecting end 1 and the second connecting end 2 to rotate circumferentially with each other.

In this embodiment, the second connection end 2 is sleeved on the first connection end 1 by means of screw connection. As shown in FIG. 3 , the second connection end 2 is set as an internal thread, the first connection end 1 is set as an external thread, and the two connection ends are threadedly connected to each other, which further improves the reliability of the connection and the anti-dropping effect.

In this embodiment, both the first anti-detachment hole 51 and the second anti-detachment hole 52 are threaded holes, and both the first limiting member 41 and the second limiting member 42 are screws. The threaded connection mode facilitates the installation and removal of the two connection ends.

In this embodiment, the end position of the second connection end 2 has an L-shaped concave platform, and both the first anti-detachment hole 51 and the second anti-detachment hole 52 are located at the concave platform. As shown in FIG. 3 , the first anti-detachment hole 51 and the second anti-detachment hole 52 are arranged at the concave platform, that is, the limit ring 3 is sleeved at the concave platform, which is convenient for installation. At the same time, it is also convenient that the outer surface of the second connecting end 2 is flush with the outer surface of the limiting ring 3 .

In a specific embodiment, the second limit hole 62 and the second anti-detachment hole 52 can also be provided in multiples, and are distributed in the same position in the circumferential direction of the limit ring 3; When the first stopper 41 is installed, it can be installed at the same time. After the first stopper 41 is installed, the stop ring 3 is rotated to make the first stop hole 61 and the first anti-fall hole 51 staggered, and make the second stop hole 62 and the second stop The removal holes 52 are aligned (one-to-one correspondence) to ensure that the second limiting members 42 can be installed at the same time, which further improves the reliability of the removal prevention.

The schematic diagrams of the second embodiment of the present invention refer to FIGS. 9 to 14 . Compared with the first embodiment, the difference lies in that it includes one limiting hole 6 and three anti-detachment holes 5 , wherein the first limiting member 41 has a One end passes through the anti-separation hole 5 and abuts against the groove 11 , and the other end of the first limiting member 41 is located in the inner surface of the limiting ring 3 ; One end of the second limiting member 42 is in contact with the groove 11 through the anti-detachment hole 5 , and the other end of the second limiting member 42 is located in the limiting hole 6 .

The schematic diagrams of the installation process of this embodiment are shown in Figures 9 to 12. First, align the limit hole 6 with an anti-drop hole below the figure, as shown in Figure 9, and then install the corresponding first limit member 41, as shown in Figure 10 Then rotate the limit ring 3 so that the limit hole 6 is aligned with the other anti-fall hole 5 below the figure, as shown in Figure 11, install the second first limit piece 41, and the installation is completed. A schematic diagram of the structure of a limiting member 41 is shown in FIG. 12 ; then the limiting ring 3 is rotated so that the limiting hole 6 is aligned with the anti-detachment hole 5 above the illustration, as shown in FIG. 13 , the second limiting member 42 is installed, The schematic diagram of the completed installation is shown in Figure 14.

In a specific embodiment, the inner surface of the limiting ring 3 is provided with a accommodating cavity for accommodating the other end of the first limiting member 41 , that is, the inner surface of the limiting ring 3 is close to the outer surface of the second connecting end 2 . A accommodating cavity is provided on it. In this arrangement, even if the first limiting member 41 and the second limiting member 42 are loose, one end of the first limiting member 41 will fall into the accommodating cavity, thereby restricting the rotation of the limiting ring 3. The limiter 41 will not rotate to the limit hole 6, which restricts one end of the first limiter 41 from falling out completely from the groove 11 of the first connecting end 1. At this time, the first limiter 41 is also always Being located in the groove 11 of the first connecting end 1 also ensures that the second connecting end 2 and the first connecting end 2 will not fall off. The anti-shedding effect is further improved.

An embodiment of the present invention also provides an anti-separation assembly, comprising a push cylinder and a seat sealing tool, the push cylinder and the seat sealing tool are connected by the above-mentioned anti-separation structure, the seat sealing tool has a first connection end 1, and the push cylinder has a second Connection end 2.

After the push cylinder and the seat sealing tool are installed through such an anti-return structure, it is ensured that the push cylinder and the seat sealing tool will not fall off.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. Inside.

Claims (10)

1. An anti-drop connecting structure is characterized by comprising a first connecting end, a second connecting end and a limiting ring;

the first connecting end is provided with a groove;

the second connecting end is sleeved on the first connecting end, and at least two anti-falling holes are formed in the circumferential direction of the second connecting end;

the limiting ring is sleeved on the circumferential direction of the anti-falling hole of the second connecting end, and at least one limiting hole matched with the anti-falling hole is formed in the limiting ring;

the anti-falling device further comprises a first limiting piece and a second limiting piece, one end of the first limiting piece penetrates through the anti-falling hole to be abutted against the groove, and the other end of the first limiting piece is located in the inner surface of the limiting ring; one end of the second limiting part penetrates through the anti-falling hole and is abutted to the groove, and the other end of the second limiting part is located in the limiting hole.

2. The anti-separation connecting structure according to claim 1, wherein the number of the limiting holes is one, and the number of the anti-separation holes is plural.

3. The anti-separation connecting structure according to claim 1, wherein the anti-separation holes comprise a first anti-separation hole and a second anti-separation hole, the anti-separation hole through which the first retaining member passes is the first anti-separation hole, and the anti-separation hole through which the second retaining member passes is the second anti-separation hole;

the limiting holes comprise a first limiting hole and a second limiting hole, the limiting hole where the other end of the second limiting piece is located is the second limiting hole, and the rest limiting holes are the first limiting holes;

the first anti-dropping holes and the first limiting holes are equal in number and are distributed at the same positions in the circumferential direction of the second connecting end and the limiting ring respectively; the number of the second anti-falling holes is equal to that of the second limiting holes; when the first limiting hole corresponds to the first anti-falling hole in the circumferential direction, the second limiting hole is staggered with the second anti-falling hole in the circumferential direction.

4. The anti-separation connecting structure according to claim 3, wherein the second anti-separation holes and the second limiting holes are distributed in the same positions in the circumferential direction of the second connecting end and the limiting ring.

5. The anti-separation connecting structure according to claim 1, wherein the groove is a circumferential groove.

6. The anti-separation connecting structure according to claim 1, wherein the second connecting end is sleeved on the first connecting end in a threaded connection manner.

7. The anti-drop connecting structure according to claim 1, wherein the anti-drop hole is a threaded hole, and the first retaining member and the second retaining member are both screws.

8. The anti-separation connecting structure according to claim 1, wherein the end position of the second connecting end has an L-shaped concave platform, and the anti-separation hole is located at the concave platform.

9. The anti-separation connecting structure according to any one of claims 1 to 8, wherein a receiving cavity for receiving the other end of the first limiting member is provided on an inner surface of the limiting ring.

10. An anti-separation assembly comprising a push cylinder and a setting tool, wherein the push cylinder and the setting tool are connected by the anti-separation structure of any one of claims 1 to 9, the setting tool has the first connection end, and the push cylinder has the second connection end.

Images