Tunnel shock absorption damper

Abstract

The utility model discloses a tunnel shock-absorbing damper, which belongs to the technical field of tunnel shock absorption and comprises an upper mounting seat and a lower mounting seat, a second universal shaft is fixedly connected to the side of the upper mounting seat facing the lower mounting seat, a connecting seat is fixedly connected to the end of the second universal shaft far away from the upper mounting seat, a connecting groove is formed in the connecting seat, and the lower mounting seat is fixedly connected with the connecting groove. A first universal shaft is fixedly connected to the side, facing the upper mounting seat, of the lower mounting seat; the upper mounting seat is mounted on surrounding rock, then the lower mounting seat is mounted on the shield segment, the moving position of the shield segment is planned according to the positions of the connecting grooves and the sliding rods on the upper mounting seat and the lower mounting seat, the shield segment moves, and the sliding rods are inserted into the connecting grooves to be positioned, so that the shock absorber can be mounted. Compared with the prior art, the installation mode has the advantages that insertion positioning installation can be achieved only by planning position movement, installation space limitation is not needed, installation is convenient and fast, the installation efficiency of the shock absorber can be improved, and the tunnel construction efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel shock absorption, and in particular relates to a tunnel shock absorption damper. Background Art

[0002] A tunnel is an engineering structure buried in the ground and is a form of human utilization of underground space. In order to prevent the shield segments of the tunnel from direct contact and compression when geological fluctuations occur in the tunnel surrounding rock, a buffer structure needs to be installed between the surrounding rock and the shield segments.

[0003] Chinese Patent No. 202320226149.6 discloses a tunnel shock-absorbing damper, which consists of surrounding rock, a first arc seat installed on the surrounding rock, a ball seat with a damping layer installed on the first arc seat, a support rod with a ball rotatably connected to the ball seat, and a second arc seat installed at the other end of the support rod and between shield segments through a universal shaft. When the tunnel shock-absorbing damper is used, the ball of the support rod is first installed with the ball seat, and then the first arc seat and the second arc seat are respectively installed on the surrounding rock and the shield segment to achieve installation.

[0004] The inventors of the present application discovered that when installing the first arc seat and the second arc seat of the above-mentioned existing tunnel shock-absorbing damper, the installation of the first arc seat and the second arc seat is difficult due to the spacing space limitation between the surrounding rock and the shield segment, which reduces the installation speed of the tunnel shock-absorbing damper and prolongs the tunnel construction period. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a tunnel shock-absorbing damper, which has the characteristics of being not limited by the installation space, being easy and quick to install, and being able to improve the installation efficiency of the shock-absorbing damper, that is, speeding up the tunnel construction efficiency.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tunnel shock-absorbing damper, comprising: an upper mounting seat and a lower mounting seat, the upper mounting seat being fixedly connected to a second universal shaft toward the lower mounting seat side, the second universal shaft being fixedly connected to a connecting seat at an end away from the upper mounting seat, a connecting groove being provided inside the connecting seat, the lower mounting seat being fixedly connected to a first universal shaft toward the upper mounting seat side, the first universal shaft being fixedly connected to an oil cylinder at an end away from the lower mounting seat, an assembly opening being provided in the middle of the oil cylinder at a side away from the first universal shaft, a sliding rod being slidably connected inside the assembly opening, the sliding rod extending into the oil cylinder near the oil cylinder end and being fixedly connected to a sliding plug dividing the inside of the oil cylinder into a second oil chamber and a first oil chamber, a plurality of oil grooves being provided on the sliding plug at equal intervals along the circumferential direction, the sliding rod being inserted into the connecting groove at an end away from the oil cylinder and a plug-in positioning mechanism being provided between the connecting seat.

[0007] Furthermore, the plug-in positioning mechanism includes two receiving grooves symmetrically opened inside the connecting seat along the central axis of the connecting groove and connected to the connecting groove, four movable grooves symmetrically opened inside the connecting seat along the central axis of the corresponding receiving groove and connected to the corresponding receiving groove, and two plug-in positioning grooves symmetrically opened on the side of the sliding rod away from the oil cylinder, a plug-in positioning block with an oblique angle toward the bottom end of the sliding rod side is placed inside the receiving groove, a movable rod is fixed inside the movable groove, the plug-in positioning block is movably connected to the corresponding movable rod by an open hole socket connection, and a third connecting spring is elastically connected on the movable rod between the plug-in positioning block and the side wall of the receiving groove away from the sliding rod.

[0008] Furthermore, a sealing ring is fixedly connected to the inner wall of the assembly opening, and the wall surface thereof abuts against the outer wall of the sliding rod.

[0009] Furthermore, a stopper is fixedly connected to the end of the sliding rod away from the oil cylinder and matches with the two plug-in positioning blocks and can abut against the two plug-in positioning blocks.

[0010] Furthermore, a second connecting spring is elastically connected between the upper mounting seat and the connecting seat and located outside the second cardan shaft, and a first connecting spring is elastically connected between the lower mounting seat and the oil cylinder and located outside the first cardan shaft.

[0011] Furthermore, it also includes surrounding rocks and shield segments, the upper mounting seat is fixedly connected to the surrounding rocks by screws, and the lower mounting seat is fixedly connected to the shield segments by screws.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model first installs the upper mounting seat on the surrounding rock, and then installs the lower mounting seat on the shield segment. After that, the moving position of the shield segment is planned and moved according to the positions of the connecting grooves and the sliding rods on the upper and lower mounting seats, so that the sliding rod is inserted into the connecting groove for positioning to realize the installation of the shock-absorbing damper. Compared with the prior art, this installation method only needs to plan the position movement to realize the plug-in positioning installation, without being restricted by the installation space. The installation is convenient and quick, which can improve the installation efficiency of the shock-absorbing damper, that is, speed up the tunnel construction efficiency.

[0014] 2. The utility model is provided with a first connecting spring and a second connecting spring, which can play an auxiliary role in damping and shock absorption, and can also help the shock absorbing damper to reset after shock absorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is a vertical cross-sectional view of the utility model;

[0017] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle;

[0018] In the figure: 1. surrounding rock; 2. upper mounting seat; 3. lower mounting seat; 4. shield segment; 5. assembly port; 6. oil cylinder; 7. sliding plug; 8. first connecting spring; 9. first cardan shaft; 10. first oil chamber; 11. oil groove; 12. sliding rod; 13. second oil chamber; 14. sealing ring; 15. second cardan shaft; 16. second connecting spring; 17. stop block; 18. connecting seat; 19. plug-in positioning block; 20. movable rod; 21. plug-in positioning groove; 22. third connecting spring; 23. storage groove; 24. movable groove; 25. connecting groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1

[0021] See also Figure 1-3 The utility model provides the following technical solutions: a tunnel shock-absorbing damper, comprising: an upper mounting seat 2 and a lower mounting seat 3, wherein the upper mounting seat 2 is fixedly connected to a second cardan shaft 15 on the side facing the lower mounting seat 3, and the second cardan shaft 15 is fixedly connected to a connecting seat 18 at the end away from the upper mounting seat 2, and a connecting groove 25 is provided inside the connecting seat 18, and the lower mounting seat 3 is fixedly connected to a first cardan shaft 9 on the side facing the upper mounting seat 2, and an oil cylinder 6 is fixedly connected to the end of the first cardan shaft 9 away from the lower mounting seat 3, and an assembly opening 5 is provided in the middle of the oil cylinder 6 away from the first cardan shaft 9, and a sliding rod 12 is slidably connected inside the assembly opening 5, and the sliding rod 12 extends into the oil cylinder 6 near the end of the oil cylinder 6 and is fixedly connected to a sliding plug 7 that divides the inside of the oil cylinder 6 into a second oil chamber 13 and a first oil chamber 10, and a plurality of oil grooves 11 are provided on the sliding plug 7 at equal intervals along the circumferential direction, and the sliding rod 12 is inserted into the connecting groove 25 at the end away from the oil cylinder 6 and a plug-in positioning mechanism is assembled between the sliding plug 7 and the connecting seat 18.

[0022] See attached Figure 2-3When installing the tunnel shock-absorbing damper, determine the positions of the upper mounting seat 2 and the lower mounting seat 3 on the surrounding rock 1 and the shield segment 4 respectively and fix them by screws. According to the position of the connecting groove 25 on the upper mounting seat 2 and the sliding rod 12 on the lower mounting seat 3, the moving position of the shield segment 4 is determined and moved. The shield segment 4 drives the sliding rod 12 to move until the sliding rod 12 moves and is plugged into the connecting groove 25 on the upper mounting seat 2 and is positioned and stopped by the plug-in positioning mechanism, that is, the shield segment 4 can no longer move and stops. At this time, the shock-absorbing damper is installed; when the shock-absorbing damper is used, when geological fluctuations occur in the surrounding rock 1, the connecting seat 18 drives the sliding rod 12 to move, and the sliding rod 12 drives the sliding plug 7 to move. Through the movement of the sliding plug 7 and the action of multiple oil grooves 11, the damping oil between the second oil chamber 13 and the first oil chamber 10 is converted to offset the external force to achieve shock absorption.

[0023] Specifically, the plug-in positioning mechanism includes two receiving grooves 23 symmetrically arranged inside the connecting seat 18 along the central axis of the connecting groove 25 and connected to the connecting groove 25, four movable grooves 24 symmetrically arranged inside the connecting seat 18 along the central axis of the corresponding receiving grooves 23 and connected to the corresponding receiving grooves 23, and two plug-in positioning grooves 21 symmetrically arranged on the side of the sliding rod 12 away from the oil cylinder 6, a plug-in positioning block 19 with an oblique angle toward the bottom end of the sliding rod 12 is placed inside the receiving groove 23, a movable rod 20 is fixed inside the movable groove 24, the plug-in positioning block 19 is movably connected to the corresponding movable rod 20 by an open hole socket connection, and a third connecting spring 22 is elastically connected between the plug-in positioning block 19 and the side wall of the receiving groove 23 away from the sliding rod 12 on the movable rod 20.

[0024] See attached Figure 3 When the plug-in positioning mechanism is working, the sliding rod 12 moves to push open the two plug-in positioning blocks 19, so that the two plug-in positioning blocks 19 are respectively received in the two receiving grooves 23, and the sliding rod 12 continues to move until it abuts against the wall of the connecting groove 25 and can no longer move and stops. At this time, the two plug-in positioning grooves 21 on the sliding rod 12 are respectively connected to the two receiving grooves 23, and the two plug-in positioning blocks 19 lose their blocking force and are respectively plugged into the two plug-in positioning grooves 21 under the reset force of the connected third connecting spring 22 to achieve plug-in positioning.

[0025] Specifically, a sealing ring 14 is fixedly connected to the inner wall of the assembly opening 5 , and the wall surface of the sealing ring 14 abuts against the outer wall of the sliding rod 12 .

[0026] See attached Figure 2 The sealing ring 14 can improve the sealing between the assembly opening 5 and the sliding rod 12 to prevent leakage of the damping fluid.

[0027] Specifically, a stopper 17 that matches with the two plug-in positioning blocks 19 and can abut against the two plug-in positioning blocks 19 is fixedly connected to the end of the sliding rod 12 away from the oil cylinder 6 .

[0028] See attached Figure 3 The abutment block 17 can make it easier to abut the two plug-in positioning blocks 19 during the movement of the sliding rod 12.

[0029] Specifically, it also includes surrounding rock 1 and shield segments 4. The upper mounting seat 2 is fixedly connected to the surrounding rock 1 by screws, and the lower mounting seat 3 is fixedly connected to the shield segments 4 by screws.

[0030] Embodiment 2

[0031] The difference between this embodiment and the first embodiment is that:

[0032] Specifically, a second connecting spring 16 is elastically connected between the upper mounting seat 2 and the connecting seat 18 and located outside the second cardan shaft 15 , and a first connecting spring 8 is elastically connected between the lower mounting seat 3 and the oil cylinder 6 and located outside the first cardan shaft 9 .

[0033] See attached Figure 2 The second connecting spring 16 and the first connecting spring 8 can play a role in auxiliary damping and shock absorption, and can also help the structure to reset after the shock absorption is completed.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel shock absorber, characterized in that: include: An upper mounting seat (2) and a lower mounting seat (3), wherein the upper mounting seat (2) is fixedly connected to a second cardan shaft (15) on the side facing the lower mounting seat (3), the second cardan shaft (15) is fixedly connected to a connecting seat (18) at an end away from the upper mounting seat (2), a connecting groove (25) is provided inside the connecting seat (18), the lower mounting seat (3) is fixedly connected to a first cardan shaft (9) on the side facing the upper mounting seat (2), the first cardan shaft (9) is fixedly connected to an oil cylinder (6) at an end away from the lower mounting seat (3), the oil cylinder (6) is away from the first cardan shaft ( An assembly opening (5) is provided in the middle of the side of the oil cylinder (9), and a sliding rod (12) is slidably connected inside the assembly opening (5). The sliding rod (12) extends into the oil cylinder (6) near the end of the oil cylinder (6) and is fixedly connected to a sliding plug (7) that divides the inside of the oil cylinder (6) into a second oil chamber (13) and a first oil chamber (10). A plurality of oil grooves (11) are provided on the sliding plug (7) at equal intervals along the circumferential direction. The sliding rod (12) is inserted into the connecting groove (25) at the end away from the oil cylinder (6) and a plug-in positioning mechanism is installed between the sliding rod and the connecting seat (18).

2. A tunnel vibration damper according to claim 1, characterized in that: The plug-in positioning mechanism comprises two receiving grooves (23) symmetrically arranged inside the connecting seat (18) along the central axis of the connecting groove (25) and connected to the connecting groove (25), four movable grooves (24) symmetrically arranged inside the connecting seat (18) along the central axis of the corresponding receiving grooves (23) and connected to the corresponding receiving grooves (23), and two plug-in positioning grooves (21) symmetrically arranged on the side of the sliding rod (12) away from the oil cylinder (6), wherein a plug-in positioning block (19) with an oblique angle at the bottom end facing the sliding rod (12) is placed inside the receiving groove (23), a movable rod (20) is fixed inside the movable groove (24), the plug-in positioning block (19) is movably connected to the corresponding movable rod (20) by means of an open hole sleeve connection, and a third connecting spring (22) is elastically connected between the plug-in positioning block (19) and the side wall of the receiving groove (23) away from the sliding rod (12) on the movable rod (20).

3. The tunnel vibration damper according to claim 1, characterized in that: The inner wall of the assembly opening (5) is fixedly connected with a sealing ring (14) whose wall surface abuts against the outer wall of the sliding rod (12).

4. The tunnel vibration damper according to claim 2, characterized in that: The end of the sliding rod (12) away from the oil cylinder (6) is fixedly connected with a stopper (17) which matches with the two plug-in positioning blocks (19) and can abut against the two plug-in positioning blocks (19).

5. The tunnel vibration damper according to claim 1, characterized in that: A second connecting spring (16) is elastically connected between the upper mounting seat (2) and the connecting seat (18) and located outside the second cardan shaft (15), and a first connecting spring (8) is elastically connected between the lower mounting seat (3) and the oil cylinder (6) and located outside the first cardan shaft (9).

6. The tunnel vibration damper according to claim 1, characterized in that: It also includes surrounding rock (1) and shield segments (4), the upper mounting seat (2) is fixedly connected to the surrounding rock (1) by means of screws, and the lower mounting seat (3) is fixedly connected to the shield segments (4) by means of screws.

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