Tunnel lining crack detection device based on distributed optical fiber sensing system

Abstract

The utility model relates to the technical field of tunnels, and discloses a tunnel lining crack detection device based on a distributed optical fiber sensing system, which comprises a bottom plate, the top of the bottom plate is fixedly connected with a frame, the front side of the inner wall of the frame is provided with a support frame I, and the front side of the support frame I is in threaded connection with a plurality of bolts. A second supporting frame is in threaded connection with the outer wall of the bolt, a nut is in threaded connection with the rear end of the outer wall of the bolt, limiting columns are slidably connected to the left end and the right end of the front side of the first supporting frame, a cable is arranged on the rear side of the first supporting frame, and base plates are slidably connected to the left side and the right side of the bottom of the first supporting frame. And a supporting mechanism is arranged at the top of the bottom plate. According to the utility model, the first support frame and the second support frame are connected through the bolt, the nut is slightly screwed, the limiting column passes through the support frame, the nut is screwed to clamp the cable, the support frame is pushed to the limiting plate, and the base plate is cushioned for fixation, so that the dismounting and mounting processes are simplified, and the high-place operation risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of tunnel technology, and in particular to a tunnel lining crack detection device based on a distributed optical fiber sensing system. Background Technology

[0002] Tunnel cracks are a common problem in tunnel lining structures. They not only threaten the safety, durability, and waterproofing of the tunnel structure itself, but also easily lead to other disasters. If early warning and treatment are not timely, they can even endanger people's lives and property. For example, cracks can cause water leakage in the tunnel, which can accelerate the corrosion of the lining structure and reduce its load-bearing capacity. At the same time, cracks can also affect the driving safety in the tunnel, such as causing uneven road surfaces and causing vehicles to bump.

[0003] A search revealed Chinese Patent Publication No. CN222231712U, which discloses a tunnel wall crack detection device based on a distributed optical fiber sensing system. The device includes a base plate, a bottom support plate fixedly mounted on the top of the base plate, a combined assembly on the top of the bottom support plate, and a clamping plate fixedly mounted on the inner side of a movable plate. The outer side of the movable plate is flush with the inner wall of the bottom support plate. This invention relates to the field of tunnel wall crack detection technology. The device uses a movable plate to drive the clamping plate to move synchronously in opposite directions. The clamping plates on both sides clamp the optical fiber sensor, thus fixing it in place. The inner clamping plates further fix the optical fiber sensor to the tunnel wall. During maintenance, simply turning the first knob releases the clamping plate, allowing the optical fiber sensor to be removed, facilitating maintenance and replacement. However, this invention does not consider that the bolts at the top require workers to climb to the top to tighten them, increasing the risk of accidents and reducing the device's practicality. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a tunnel lining crack detection device based on a distributed optical fiber sensing system, which aims to improve the problem in the prior art where workers need to climb to the top to tighten the bolts, which increases the danger of the work and reduces the practicality of the equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a tunnel lining crack detection device based on a distributed optical fiber sensing system, comprising a base plate, a frame fixedly connected to the top of the base plate, a support frame one provided on the front side of the inner wall of the frame, a plurality of bolts threadedly connected to the front side of the support frame one, a support frame two threadedly connected to the outer wall of the bolts, a nut threadedly connected to the rear end of the outer wall of the bolts, limit posts slidably connected to the left and right ends of the front side of the support frame one, a cable provided on the rear side of the support frame one, pads slidably connected to the left and right sides of the bottom of the support frame one, and a support mechanism provided on the top of the base plate, the support mechanism being used to reinforce the device.

[0006] Through the above technical solutions: the base plate and frame are fixedly connected, ensuring the stability of the overall structure; the support frame not only bears the weight of the structure but also provides a solid foundation for subsequent equipment installation; the bolts are threadedly connected to the support frame, forming a stable support structure; the bolts and nuts are threadedly connected, which not only facilitates later maintenance and adjustment but also enhances the durability of the entire structure, further ensuring the reliability of the connection; the limit post allows the equipment to be finely adjusted within a certain range to adapt to different working environments; the cable is responsible for transmitting the power and signals of the equipment to various parts, ensuring the normal operation of the equipment; the pad not only absorbs the vibration generated during equipment operation but also adapts to different ground flatness, ensuring the stable operation of the equipment; the support mechanism is to reinforce the equipment and ensure that the equipment maintains optimal performance under various working conditions.

[0007] As a further description of the above technical solution:

[0008] The support mechanism includes a fixed plate, the outer wall of which is fixedly connected to the rear side of the support frame one. A telescopic rod is fixedly connected to the left side of the fixed plate, and a sliding plate is fixedly connected to the left side of the telescopic rod. A rotating rod one is slidably connected to the top of the outer wall of the sliding plate, and a rotating rod two is slidably connected to the bottom of the outer wall of the sliding plate. A rotating shaft is rotatably connected to the middle of the outer wall of the rotating rod two.

[0009] The above technical solution ensures the stability of the entire structure by fixing the plate and the support frame, saving space and increasing the flexibility of the device by telescopic rod, allowing the slide plate to move freely within a certain range and thus realize its function by sliding the slide plate and the rotating rod, and allowing the entire device to rotate smoothly by rotating shaft.

[0010] As a further description of the above technical solution:

[0011] A support block is fixedly connected to the top right front end of the base plate, and limit plates are fixedly connected to the left and right rear ends of the second support frame.

[0012] Through the above technical solutions: the support block enhances the stability of the device, and the limiting plate ensures the precise positioning of the device during movement, preventing damage that may be caused by excessive movement.

[0013] As a further description of the above technical solution:

[0014] The front side of the outer wall of the limiting post is threaded with a limiting ring one, and the rear side of the outer wall of the limiting post is threaded with a limiting ring two.

[0015] Through the above technical solution, the second limiting ring not only provides a precise reference for the positioning of the equipment, but also ensures the safety and reliability of the equipment during operation.

[0016] As a further description of the above technical solution:

[0017] A controller is fixedly connected to the top of the support block, and the controller is electrically connected to the telescopic rod.

[0018] The above technical solution ensures the stability and ease of operation of the device. The electrical connection between the controller and the telescopic pole significantly improves the response speed and accuracy of the entire system.

[0019] As a further description of the above technical solution:

[0020] Multiple anti-slip strips are fixedly connected to the center of the top surface of the base plate, and a display screen is fixedly connected to the front side of the controller.

[0021] Through the above technical solutions, the anti-slip strip not only improves safety during use but also enhances overall durability, while the display screen allows users to easily obtain information and make settings.

[0022] As a further description of the above technical solution:

[0023] The inner wall of the rotating shaft is rotatably connected to the outer wall of the rotating rod, and the two pads are arranged symmetrically.

[0024] The above technical solution ensures the balance of the device during operation by symmetrically arranging the pads.

[0025] As a further description of the above technical solution:

[0026] The upper left end of the fixed plate is slidably connected to the right end of the first rotating rod, and the lower left end of the fixed plate is slidably connected to the right end of the second rotating rod.

[0027] The above technical solution allows the rotating rod one to slide freely on the fixed plate, thereby realizing the flexible adjustment of the device. The fixed plate is slidably connected to the rotating rod two, ensuring the flexible movement of the rotating rod two.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, support frame one and support frame two are connected by bolts and the nuts are slightly tightened. Then, the limiting post is passed through the two support frames, and the cable is laid close to the limiting post and the bolts. The nuts are tightened to clamp the cable. Then, the support frame is pushed into the frame until the limiting plate is reached. A pad is placed on the support frame to fix it. This facilitates the user's disassembly and installation, eliminates the need to tighten bolts at high places, reduces the danger of working at heights, and improves the practicality of the equipment.

[0030] 2. In this utility model, the fixed plate is inserted between the support frame one and the support frame two. The telescopic rod is activated to pull the slide plate, causing the slide plate to slide towards the edge and drive the rotating rod one and the rotating rod two to rotate around the axis. The rotating rod slides along the outer wall of the fixed plate, pushing the fixed plate outward and opening the support frame one, so that its outer wall supports the inner wall of the frame, thereby achieving support for the frame, improving the stability of the equipment, and providing sufficient protection for the life safety of the staff. Attached Figure Description

[0031] Figure 1 This is a front perspective view of a bottom plate tunnel lining crack detection device based on a distributed optical fiber sensing system proposed in this utility model.

[0032] Figure 2 This is a partial structural breakdown diagram of a support frame-tunnel lining crack detection device based on a distributed optical fiber sensing system proposed in this utility model.

[0033] Figure 3 This is a partial structural diagram of a bolt tunnel lining crack detection device based on a distributed optical fiber sensing system proposed in this utility model.

[0034] Figure 4 This is a partial structural diagram of a support frame tunnel lining crack detection device based on a distributed optical fiber sensing system proposed in this utility model.

[0035] Figure 5 This is a partial structural schematic diagram of a fixed plate tunnel lining crack detection device based on a distributed optical fiber sensing system proposed in this utility model.

[0036] Legend:

[0037] 1. Base plate; 2. Support mechanism; 201. Fixed plate; 202. Telescopic rod; 203. Slide plate; 204. Rotating rod one; 205. Rotating shaft; 206. Rotating rod two; 3. Frame; 4. Support frame one; 5. Support frame two; 6. Bolt; 7. Nut; 8. Limiting post; 9. Cable; 10. Pad; 11. Support block; 12. Controller; 13. Display screen; 14. Anti-slip strip; 15. Limiting ring one; 16. Limiting ring two; 17. Limiting plate. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Please see the appendix Figure 2 Appendix Figure 3 and attached Figure 4 An embodiment of this utility model provides a tunnel lining crack detection device based on a distributed optical fiber sensing system, comprising a base plate 1, a frame 3 fixedly connected to the top of the base plate 1, a support frame 4 provided on the front side of the inner wall of the frame 3, a plurality of bolts 6 threadedly connected to the front side of the support frame 4, a support frame 5 threadedly connected to the outer wall of the bolts 6, a nut 7 threadedly connected to the rear end of the outer wall of the bolts 6, limit posts 8 slidably connected to the left and right ends of the front side of the support frame 4, a cable 9 provided on the rear side of the support frame 4, pads 10 slidably connected to the left and right sides of the bottom of the support frame 4, a support mechanism 2 provided on the top of the base plate 1, the support mechanism 2 being used to reinforce the device, a limit ring 15 threadedly connected to the front side of the outer wall of the limit post 8, and a limit ring 16 threadedly connected to the rear side of the outer wall of the limit post 8;

[0040] Specifically, the base plate 1 is fixedly connected to the frame 3, ensuring the stability of the overall structure. The support frame 4 not only bears the weight of the structure but also provides a solid foundation for subsequent equipment installation. The bolt 6 is threadedly connected to the support frame 5, forming a stable support structure. The bolt 6 is threadedly connected to the nut 7, which not only facilitates later maintenance and adjustment but also enhances the durability of the entire structure, further ensuring the reliability of the connection. The limit post 8 allows the equipment to be finely adjusted within a certain range to adapt to different working environments. The cable 9 is responsible for transmitting the power and signals of the equipment to various parts, ensuring the normal operation of the equipment. The pad 10 not only absorbs the vibration generated during the operation of the equipment but also adapts to different ground flatness, ensuring the stable operation of the equipment. The support mechanism 2 is for reinforcing the equipment, ensuring that the equipment can maintain optimal performance under various working conditions. The limit ring 16 not only provides a precise reference for the positioning of the equipment but also ensures the safety and reliability of the equipment during operation.

[0041] Please see the appendix Figure 1 and attached Figure 5 The support mechanism 2 includes a fixed plate 201. The outer wall of the fixed plate 201 is fixedly connected to the rear side of the support frame 4. A telescopic rod 202 is fixedly connected to the left side of the fixed plate 201. A sliding plate 203 is fixedly connected to the left side of the telescopic rod 202. A rotating rod 204 is slidably connected to the top of the outer wall of the sliding plate 203. A rotating rod 206 is slidably connected to the bottom of the outer wall of the sliding plate 203. A rotating shaft 205 is rotatably connected to the middle of the outer wall of the rotating rod 206. The inner wall of the rotating shaft 205 is rotatably connected to the outer wall of the rotating rod 204. The two pads 10 are arranged symmetrically.

[0042] Specifically, the fixed plate 201 is fixedly connected to the support frame 4, ensuring the stability of the entire structure. The telescopic rod 202 not only saves space but also increases the flexibility of the device. The sliding plate 203 is slidably connected to the rotating rod 204, allowing the sliding plate 203 to move freely within a certain range, thereby realizing its function. The rotating shaft 205 is rotatably connected to the rotating rod 204, enabling the entire device to rotate smoothly. The two pads 10 are symmetrically arranged, ensuring the balance of the device during operation.

[0043] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3 A support block 11 is fixedly connected to the top right front end of the base plate 1. Limiting plates 17 are fixedly connected to the left and right ends of the rear side of the support frame 2 5. The upper left end of the fixed plate 201 is slidably connected to the right end of the rotating rod 1 204, and the lower left end of the fixed plate 201 is slidably connected to the right end of the rotating rod 206.

[0044] Specifically, the support block 11 enhances the stability of the device, the limiting plate 17 ensures the precise positioning of the device during movement and prevents damage that may be caused by excessive movement, the fixed plate 201 is slidably connected to the rotating rod 1 204, allowing the rotating rod 1 204 to slide freely on the fixed plate 201, thereby realizing the flexible adjustment of the device, and the fixed plate 201 is slidably connected to the rotating rod 206, ensuring the flexible movement of the rotating rod 206.

[0045] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3 A controller 12 is fixedly connected to the top of the support block 11. The controller 12 is electrically connected to the telescopic rod 202. Multiple anti-slip strips 14 are fixedly connected to the middle of the top surface of the base plate 1. A display screen 13 is fixedly connected to the front side of the controller 12.

[0046] Specifically, the support block 11 is fixedly connected to the controller 12, ensuring the stability of the device and the convenience of operation. The controller 12 is electrically connected to the telescopic rod 202, which significantly improves the response speed and accuracy of the entire system. The anti-slip strip 14 not only improves the safety during use but also enhances the overall durability. The display screen 13 allows users to easily obtain information and make settings.

[0047] Working principle: Use bolt 6 to connect support frame 1 4 and support frame 2 5, then slightly tighten nut 7 to pass the limiting post 8 through support frame 1 4 and support frame 2 5, and lay cable 9 on the outer wall of limiting post 8 so that cable 9 is close to the outer wall of bolt 6 and limiting post 8. At this time, tighten nut 7 again so that cable 9 is clamped between support frame 1 4 and support frame 2 5. Finally, push support frame 1 4 and support frame 2 5 into the inside of frame 3. Stop when it hits limiting plate 17, and put pad plate 10 on the bottom of support frame 1 4 and support frame 2 5 to fix support frame 1 4 and support frame 2 5 into the inside of frame 3. This facilitates disassembly and installation by users, eliminates the need to tighten bolt 6 at a height, reduces the danger of working at height, and improves the practicality of the equipment.

[0048] Slide the fixed plate 201 into the gap between support frame 1 4 and support frame 2 5, then activate the telescopic rod 202. The telescopic rod 202 will pull the sliding plate 203, causing the sliding plates 203 on both sides to slide towards the edge. This will cause the rotating rod 1 204 and rotating rod 2 206 to rotate around the inner wall of the rotating shaft 205. The two ends of the rotating rod 1 204 and rotating rod 2 206 will slide along the outer wall of the fixed plate 201, thereby pushing the fixed plates 201 on both sides outward and opening the support frame 1 4. This allows the outer wall of the support frame 1 4 to support the inner wall of the frame 3, thus supporting the frame 3, improving the stability of the equipment, and providing sufficient protection for the safety of the staff.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tunnel lining crack detection device based on a distributed optical fiber sensing system, comprising a base plate (1), characterized in that: A frame (3) is fixedly connected to the top of the base plate (1). A support frame (4) is provided on the front side of the inner wall of the frame (3). Multiple bolts (6) are threadedly connected to the front side of the support frame (4). A support frame (5) is threadedly connected to the outer wall of the bolts (6). A nut (7) is threadedly connected to the rear end of the outer wall of the bolts (6). Limiting posts (8) are slidably connected to the left and right ends of the front side of the support frame (4). A cable (9) is provided on the rear side of the support frame (4). A pad (10) is slidably connected to the left and right sides of the bottom of the support frame (4). A support mechanism (2) is provided on the top of the base plate (1). The support mechanism (2) is used to reinforce the equipment.

2. The tunnel lining crack detection device based on a distributed optical fiber sensing system according to claim 1, characterized in that: The support mechanism (2) includes a fixed plate (201), the outer wall of the fixed plate (201) is fixedly connected to the rear side of the support frame (4), a telescopic rod (202) is fixedly connected to the left side of the fixed plate (201), a sliding plate (203) is fixedly connected to the left side of the telescopic rod (202), a rotating rod (204) is slidably connected to the top of the outer wall of the sliding plate (203), a rotating rod (206) is slidably connected to the bottom of the outer wall of the sliding plate (203), and a rotating shaft (205) is rotatably connected to the middle of the outer wall of the rotating rod (206).

3. The tunnel lining crack detection device based on a distributed optical fiber sensing system according to claim 1, characterized in that: A support block (11) is fixedly connected to the top right front end of the base plate (1), and a limit plate (17) is fixedly connected to the left and right rear ends of the support frame (5).

4. The tunnel lining crack detection device based on a distributed optical fiber sensing system according to claim 1, characterized in that: The front side of the outer wall of the limiting post (8) is threaded with a limiting ring one (15), and the rear side of the outer wall of the limiting post (8) is threaded with a limiting ring two (16).

5. A tunnel lining crack detection device based on a distributed optical fiber sensing system according to claim 3, characterized in that: A controller (12) is fixedly connected to the top of the support block (11), and the controller (12) is electrically connected to the telescopic rod (202).

6. The tunnel lining crack detection device based on a distributed optical fiber sensing system according to claim 5, characterized in that: Multiple anti-slip strips (14) are fixedly connected to the center of the top surface of the base plate (1), and a display screen (13) is fixedly connected to the front side of the controller (12).

7. A tunnel lining crack detection device based on a distributed optical fiber sensing system according to claim 2, characterized in that: The inner wall of the rotating shaft (205) is rotatably connected to the outer wall of the rotating rod (204), and the two pads (10) are arranged symmetrically.

8. A tunnel lining crack detection device based on a distributed optical fiber sensing system according to claim 2, characterized in that: The upper left end of the fixed plate (201) is slidably connected to the right end of the first rotating rod (204), and the lower left end of the fixed plate (201) is slidably connected to the right end of the second rotating rod (206).

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