A tunnel lining non-destructive testing device

Abstract

The utility model discloses a tunnel lining nondestructive testing device relates to tunnel quality detection technical field, is installed ultrasonic wave emission transducer and receiving template on support station, is installed protective fence on support station, is set up sealed insertion slot on protective fence, is installed protective cover on sealed insertion frame, is installed bottom piece on support station bottom, is installed damping spring and damper on bottom piece bottom, another end of damping spring and damper is installed on the bottom plate, gear and rack are engaged, install the damping torsional spring on the bottom plate, another end of damping torsional spring is installed on the gear, the utility model discloses, protective fence and protective cover can play the protection effect to receiving template and ultrasonic wave emission transducer, prevent receiving template and ultrasonic wave emission transducer from being damaged by the collision of other objects when transporting, and can play the damping protection effect to ultrasonic wave emission transducer and receiving template, avoid the structural damage of ultrasonic wave emission transducer and receiving template caused by vibration.

Description

Technical Field

[0001] This utility model relates to the field of tunnel quality inspection technology, and in particular to a non-destructive testing device for tunnel lining. Background Technology

[0002] Non-destructive testing equipment for tunnel lining is a specialized device used to test the internal quality, structural integrity, and performance parameters of tunnel lining without damaging the lining structure (such as concrete and steel reinforcement). It plays a key role in tunnel construction quality control, operational safety assessment, and early warning of defects.

[0003] The prior art patent CN222762127U discloses a non-destructive testing device for tunnel lining, belonging to the field of tunnel engineering testing technology. It includes a main shell, with an ultrasonic transducer fixedly installed on the top of the main shell for testing the tunnel interior. A receiving template for receiving signals is rotatably connected to the inner cavity of the main shell, and an adjustment structure for adjusting the rotation angle of the receiving template is also rotatably connected to the inner cavity. By setting the adjustment structure, the ultrasonic transducer emits ultrasonic waves. The reflected waves are received and analyzed by a receiving sensor inside the receiving template to infer the structure and defects inside the tunnel lining. By adjusting the angle of the receiving template, the path and intensity of the received signal are changed, allowing the receiving template to better capture reflected signals directly above cracks to determine the approximate depth. Alternatively, by receiving signals from a certain tilt angle, signals reflected from the crack end or other sides may be received, providing more evidence for accurately determining the crack depth and facilitating subsequent repairs by workers.

[0004] The device uses an ultrasonic transducer and a receiving template to inspect the quality of tunnels. However, the ultrasonic transducer and receiving template are precision equipment. When the device is transported, it is exposed and easily damaged by collisions with other objects. In addition, the tunnel is not fully constructed during the inspection stage, and there may be unevenness and potholes in the tunnel floor. Moving the device on such ground and vibrations during transportation can also easily damage the structure of the ultrasonic transducer and receiving template, thus adversely affecting the inspection accuracy. Therefore, a non-destructive testing device for tunnel lining is needed to meet the application requirements. Utility Model Content

[0005] The purpose of this invention is to provide a non-destructive testing device for tunnel lining to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a non-destructive testing device for tunnel lining, comprising a support platform and a base plate, wherein an ultrasonic transmitting transducer and a receiving template are installed on the support platform, a protective enclosure is installed on the support platform, a sealing slot is provided on the protective enclosure, a sealing frame is inserted into the sealing slot, a protective cover is installed on the sealing frame, a base block is installed at the bottom of the support platform, a shock-absorbing spring and a damper are installed at the bottom of the base block, and the other end of the shock-absorbing spring and the damper is installed on the base plate.

[0007] Preferably, a rack is movably disposed above the base plate, a gear is rotatably mounted on the base plate, the gear meshes with the rack, a shock-absorbing torsion spring is mounted on the base plate, and the other end of the shock-absorbing torsion spring is mounted on the gear.

[0008] Preferably, a connecting rod is mounted on the base block, a connecting block is mounted on the rack, and the other end of the connecting rod is rotatably mounted on the connecting block.

[0009] Preferably, a guide frame is installed on the base plate, and a sliding sleeve is installed at the bottom end of the connecting block, the sliding sleeve being slidably sleeved on the guide frame.

[0010] Preferably, the protective cover is equipped with a clamping plate, a clamping rod is clamped inside the clamping plate, and a limit sleeve is fixedly sleeved on the clamping rod.

[0011] Preferably, a rotating rod is rotatably mounted on the protective fence, an annular sleeve is mounted on the end of the rod, a slider is slidably mounted inside the annular sleeve, the other end of the rotating rod is rotatably mounted on the slider, and a drive torsion spring is mounted on the protective fence and the rotating rod.

[0012] Preferably, a T-shaped guide rail is installed on the protective fence, and a T-shaped slider is installed on the clamp rod, with the T-shaped slider slidably installed inside the T-shaped guide rail.

[0013] Preferably, a push handle is installed on the base plate, and a placement box is installed on the push handle.

[0014] The beneficial effects of this utility model are:

[0015] This invention involves inserting the sealing frame into the sealing slot. The resetting action of the drive torsion spring causes the rotating rod to reverse, which in turn drives the locking rod to move to the right and insert into the locking plate, quickly securing the protective cover to the protective enclosure. The protective enclosure and cover effectively protect the receiving template and ultrasonic transducer, preventing damage from collisions with other objects during transportation.

[0016] In this invention, the support platform descends during movement or transportation due to vibration. This descent compresses the damping springs, absorbing some of the energy generated by the vibration. The remaining energy is absorbed by the damping torsion springs. The energy absorbed by both the torsion springs and the damping springs is rapidly dissipated by the damper, thus providing vibration damping protection for the ultrasonic transducer and receiver, preventing structural damage to these components. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a non-destructive testing device for tunnel lining proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the protective enclosure and protective cover of a tunnel lining non-destructive testing device proposed in this utility model.

[0019] Figure 3 This is a schematic diagram of the shock-absorbing springs, gears, and other structures of a non-destructive testing device for tunnel lining proposed in this utility model.

[0020] Figure 4 This is a schematic diagram of the clamping rod, rotating rod, and other structures of a tunnel lining non-destructive testing device proposed in this utility model.

[0021] In the diagram: 1. Support platform; 2. Base plate; 3. Ultrasonic transmitting transducer; 4. Receiving template; 5. Protective enclosure; 6. Sealing slot; 7. Sealing insert frame; 8. Protective cover; 9. Base block; 10. Shock-absorbing spring; 11. Damper; 12. Gear; 13. Rack; 14. Shock-absorbing torsion spring; 15. Connecting rod; 16. Connecting block; 17. Guide frame; 18. Sliding sleeve; 19. Clamping plate; 20. Clamping rod; 21. Limiting sleeve; 22. Rotating rod; 23. Annular sleeve; 24. Slider; 25. Drive torsion spring; 26. T-shaped guide rail; 27. T-shaped slider; 28. Push handle; 29. ​​Placement box. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example:

[0024] like Figure 1-4As shown, this embodiment provides a non-destructive testing device for tunnel lining, including a support platform 1 and a base plate 2. An ultrasonic transducer 3 and a receiving template 4 are installed on the support platform 1. To protect the ultrasonic transducer 3 and receiving template 4 during transportation and to provide shock absorption protection during use, a protective enclosure 5 is installed on the support platform 1. The protective enclosure 5 has a sealing slot 6, into which a sealing frame 7 is inserted. A protective cover 8 is installed on the sealing frame 7. A base block 9 is installed at the bottom of the support platform 1, and a shock-absorbing spring 10 and a damper 11 are installed at the bottom of the base block 9. The other ends of the shock-absorbing spring 10 and the damper 11 are installed on the base plate 2. The sealing frame 7 is inserted into the sealing slot 6, and the protective cover 8 is fixed to the protective enclosure 5. The protective enclosure 5 and the protective cover 8 protect the receiving template 4 and the ultrasonic transducer 3, preventing them from being damaged by collisions with other objects during transportation. When in use, the protective cover 8 can be removed without hindering the ultrasonic transducer 3 and the receiving template 4 from detecting the tunnel. When the device is subjected to vibration during movement or transportation, the support platform 1 will descend. The descent of the support platform 1 will cause the shock-absorbing spring 10 to be compressed. At this time, some of the energy generated by the vibration will be absorbed by the shock-absorbing spring 10 and quickly dissipated by the damper 11, thereby playing a role in shock absorption and protection for the ultrasonic transducer 3 and the receiving template 4, and avoiding structural damage to the ultrasonic transducer 3 and the receiving template 4.

[0025] To further enhance the vibration damping effect of the device, a rack 13 is movably mounted above the base plate 2, and a gear 12 is rotatably mounted on the base plate 2. The gear 12 and rack 13 mesh with each other. A damping torsion spring 14 is mounted on the base plate 2, with the other end of the damping torsion spring 14 mounted on the gear 12. A connecting rod 15 is mounted on the base block 9, and a connecting block 16 is mounted on the rack 13. The other end of the connecting rod 15 is rotatably mounted on the connecting block 16. When the support platform 1 descends, it will cause the base block 9 to descend as well. The descent of the base block 9 will push the connecting rod 15 to rotate, and the rotation of the connecting rod 15 will push the connecting block 16 to slide on the guide frame 17. The sliding of the connecting block 16 will cause the rack 13 to move forward, and the forward movement of the rack 13 will cause the gear 12 to rotate. The rotation of the gear 12 will cause the damping torsion spring 14 to be twisted. At this time, the energy generated by the vibration will be absorbed by the damping torsion spring 14, which can improve the vibration damping effect of the device.

[0026] To guide the movement of the rack 13 and the connecting block 16, a guide frame 17 is installed on the base plate 2, and a sliding sleeve 18 is installed at the bottom of the connecting block 16. The sliding sleeve 18 is slidably fitted onto the guide frame 17. The sliding of the sliding sleeve 18 on the guide frame 17 can guide the movement of the rack 13 and the connecting block 16, so that the rack 13 and the connecting block 16 can only move along the guide frame 17.

[0027] To facilitate the assembly and disassembly of the protective cover 8, a clamping plate 19 is installed on the protective cover 8. A clamping rod 20 is clamped inside the clamping plate 19, and a limit sleeve 21 is fixedly sleeved on the clamping rod 20. A rotating rod 22 is rotatably installed on the protective enclosure 5. An annular sleeve 23 is installed at the end of the clamping rod 20, and a slider 24 is slidably installed inside the annular sleeve 23. The other end of the rotating rod 22 is rotatably installed on the slider 24. A drive torsion spring 25 is installed on the protective enclosure 5 and the rotating rod 22. When the rotating rod 22 is pre-tightened, the rotation of the rotating rod 22 will cause the slider 24 to slide inside the annular sleeve 23, and the slider 24 will pull the clamping rod 20 to the left. Then, the sealing frame 7 is inserted into the sealing slot 6, and the rotating rod 22 is released. Under the reset action of the drive torsion spring 25, the rotating rod 22 will reverse, and the reverse rotation of the rotating rod 22 will cause the slider 24 to slide in the opposite direction inside the annular sleeve 23.

[0028] The device can be quickly fixed to the protective barrier 5 by pulling the lever 20 to the right and inserting it into the plate 19 by sliding the slider 24. When in use, the lever 22 can be turned again to drive the lever 20 out of the plate 19, and the protective cover 8 can be taken out directly without hindering the ultrasonic transducer 3 and the receiving template 4 from detecting the tunnel.

[0029] To guide the movement of the annular sleeve 23, a T-shaped guide rail 26 is installed on the protective enclosure 5, and a T-shaped slider 27 is installed on the clamp 20. The T-shaped slider 27 is slidably installed inside the T-shaped guide rail 26. The sliding of the T-shaped slider 27 on the T-shaped guide rail 26 can guide the movement of the annular sleeve 23, so that the annular sleeve 23 can only move along the T-shaped guide rail 26.

[0030] To facilitate the movement of the device and to mark damaged areas in the tunnel, a push handle 28 is installed on the base plate 2, and a placement box 29 is installed on the push handle 28. Pushing the push handle 28 facilitates the movement of the device, and wear-resistant adhesive labels can be placed in the placement box 29 in advance. When the device detects a damaged location, the label can be affixed to the damaged area for easy maintenance later.

[0031] Working principle: When the device is not in use, the rotating rod 22 is pre-tightened. The rotation of the rotating rod 22 causes the slider 24 to slide within the annular sleeve 23, and the slider 24 pulls the locking rod 20 to the left. Then, the sealing frame 7 is inserted into the sealing slot 6, and the rotating rod 22 is released. Under the reset action of the drive torsion spring 25, the rotating rod 22 is reversed. The reverse rotation of the rotating rod 22 causes the slider 24 to slide in the opposite direction within the annular sleeve 23, and the slider 24 pulls the locking rod 20 to the right, inserting it into the locking plate 19, which can quickly fix the protective cover 8 onto the protective enclosure 5. The protective enclosure 5 and the protective cover 8 can protect the receiving template 4 and the ultrasonic transducer 3, preventing them from being damaged by collisions with other objects during transportation. When the device is in use, the rotating rod 22 can be turned again to drive the locking rod 20 out of the locking plate 19. At this time, the protective cover 8 can be directly removed without hindering the ultrasonic transducer 3 and the receiving template 4 from detecting the tunnel. When the device is subjected to vibration during movement or transportation, the support platform 1 will descend. The descent of the support platform 1 will cause the shock-absorbing spring 10 to be compressed, and at this time, some of the energy generated by the vibration will be absorbed by the shock-absorbing spring 10. At the same time, the descent of the support platform 1 will drive the base block 9 to descend. The descent of the base block 9 will push the connecting rod 15 to rotate. The rotation of the connecting rod 15 will push the connecting block 16 to slide on the guide frame 17. The sliding of the connecting block 16 will drive the rack 13 to move forward. The forward movement of the rack 13 will drive the gear 12 to rotate. The rotation of the gear 12 will cause the shock-absorbing torsion spring 14 to be twisted. At this time, another part of the energy generated by the vibration will be absorbed by the shock-absorbing torsion spring 14. It should be noted that when the support platform 1 reaches the maximum downward movement, the rack 13 is always engaged with the gear 12. The energy absorbed by the shock-absorbing torsion spring 14 and the shock-absorbing spring 10 will be quickly consumed by the damper 11, thereby playing a role in shock absorption and protection for the ultrasonic transducer 3 and the receiving template 4, and avoiding structural damage to the ultrasonic transducer 3 and the receiving template 4.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A non-destructive testing device for tunnel lining, comprising a support platform (1) and a base plate (2), wherein an ultrasonic transmitting transducer (3) and a receiving template (4) are installed on the support platform (1), characterized in that: A protective enclosure (5) is installed on the support platform (1). A sealing slot (6) is provided on the protective enclosure (5). A sealing frame (7) is inserted into the sealing slot (6). A protective cover (8) is installed on the sealing frame (7). A base block (9) is installed at the bottom of the support platform (1). A shock-absorbing spring (10) and a damper (11) are installed at the bottom of the base block (9). The other end of the shock-absorbing spring (10) and the damper (11) is installed on the base plate (2).

2. The tunnel lining non-destructive testing device according to claim 1, characterized in that: A rack (13) is movably disposed above the base plate (2), and a gear (12) is rotatably mounted on the base plate (2). The gear (12) meshes with the rack (13). A shock-absorbing torsion spring (14) is mounted on the base plate (2), and the other end of the shock-absorbing torsion spring (14) is mounted on the gear (12).

3. The tunnel lining non-destructive testing device according to claim 2, characterized in that: A connecting rod (15) is mounted on the bottom block (9), and a connecting block (16) is mounted on the rack (13). The other end of the connecting rod (15) is rotatably mounted on the connecting block (16).

4. The tunnel lining non-destructive testing device according to claim 3, characterized in that: A guide frame (17) is installed on the base plate (2), and a sliding sleeve (18) is installed at the bottom end of the connecting block (16). The sliding sleeve (18) is slidably sleeved on the guide frame (17).

5. The tunnel lining non-destructive testing device according to claim 1, characterized in that: A clamping plate (19) is installed on the protective cover (8), and a clamping rod (20) is clamped inside the clamping plate (19). A limiting sleeve (21) is fixedly sleeved on the clamping rod (20).

6. The tunnel lining non-destructive testing device according to claim 5, characterized in that: A rotating rod (22) is rotatably mounted on the protective fence (5). An annular sleeve (23) is installed at the end of the clamp (20). A slider (24) is slidably mounted inside the annular sleeve (23). The other end of the rotating rod (22) is rotatably mounted on the slider (24). A drive torsion spring (25) is installed on the protective fence (5) and the rotating rod (22).

7. The tunnel lining non-destructive testing device according to claim 5, characterized in that: The protective enclosure (5) is equipped with a T-shaped guide rail (26), and the clamp (20) is equipped with a T-shaped slider (27). The T-shaped slider (27) is slidably installed in the T-shaped guide rail (26).

8. The tunnel lining non-destructive testing device according to claim 1, characterized in that: A push handle (28) is installed on the base plate (2), and a placement box (29) is installed on the push handle (28).

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