Intelligent monitoring device for urban tunnel structure

By installing sliding seats and mobile units in urban tunnels, and combining drive motors to realize multi-angle and long-distance monitoring of the monitor body, the problem of the existing technology being unable to timely monitor the seepage in the tunnel except for the deformation joints in the tunnel, and the overall monitoring effect of the tunnel is improved.

CN222717902UActive Publication Date: 2025-04-04SHENZHEN MUNICIPAL DESIGN & RES INST
View PDF 2 Cites 0 Cited by

Patent Information

Application Number
CN202421611498.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-09
Publication Date
2025-04-04
Estimated Expiration
2034-07-09

AI Technical Summary

Technical Problem

The existing intelligent monitoring device for urban tunnel structures cannot monitor the seepage conditions in other locations in the tunnel in a timely manner, which reduces the monitoring effect of the entire tunnel.

Method used

An intelligent monitoring device for urban tunnel structure is designed, and multi-angle and long-distance monitoring of the monitor body is realized by installing a sliding seat and a moving unit on the top wall of the tunnel main body, combining the first drive motor and the second drive motor.

Benefits of technology

This device can improve the monitoring effect of the monitor body on the tunnel body, realize real-time monitoring of multiple locations in the tunnel, promptly detect water seepage, and improve the overall monitoring effect of the tunnel.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222717902U_ABST
    Figure CN222717902U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of tunnel monitoring, and discloses an intelligent monitoring device for an urban tunnel structure, which comprises a monitor body arranged on the inner top wall of a tunnel main body, and a sliding seat fixedly arranged on the inner top wall of the tunnel main body and provided with an inverted T-shaped cross section, a moving unit capable of moving on the sliding seat along the tunnel body is arranged on the sliding seat, an equipment box is arranged on the lower portion of the moving unit, the lower side face of the equipment box is rotationally connected with an inverted-U-shaped rotating frame, and a rotating shaft is rotationally connected between the opposite side walls in the rotating frame. According to the tunnel monitoring device, the sliding seat is arranged, the moving unit moves on the sliding seat, a certain section in the tunnel body is monitored, and in order to improve the monitoring range of the monitoring device body, the monitoring device body can be adjusted at multiple angles by starting the first driving motor and the second driving motor; multi-angle and long-distance monitoring of the monitor body is achieved, and the monitoring effect of the monitor body on the tunnel body is improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel monitoring, in particular to an intelligent monitoring device for urban tunnel structures. Background Art

[0002] After the construction of an urban tunnel, its interior needs to be monitored in real time to prevent collapse or deformation inside the tunnel. Therefore, it is necessary to install intelligent monitoring devices inside the urban tunnel to monitor the internal structure of the tunnel in real time.

[0003] In order to improve the monitoring effect of urban tunnel structures, the prior art has made many improvements to the intelligent monitoring device for urban tunnel structures. For example, the patent with the publication number CN217712681U discloses an intelligent monitoring device for urban tunnel structures, which solves the problem that the settlement and deformation of deformation joints in the current urban tunnel structures are too large to be monitored in time, and the corresponding prevention and maintenance cannot be made in time, including a tunnel body; two main channels are arranged inside the tunnel body; a safety channel is also arranged inside the tunnel body; two unidirectional displacement meters are fixedly installed on one side of the two main channels; a collection cabinet and a static level are fixedly installed on one side of the safety channel; a pre-buried pipe is also arranged in the tunnel body; the static level is directly electrically connected to the collection cabinet through a wire. The device can monitor the horizontal convergence and vertical displacement of the built urban tunnel structure in real time, grasp the operation of the urban tunnel structure in time, and use information, platform and intelligent means to create a smart tunnel, thereby achieving the purpose of preventive maintenance of the structure.

[0004] The above patent has obvious beneficial effects, but still has the following shortcomings in actual operation:

[0005] In the above-mentioned comparative documents, several monitoring instruments are installed inside the tunnel body to perform intelligent monitoring on the inside of the tunnel body. However, in the existing situation, water seepage may occur at any position in the tunnel, and the above-mentioned comparative documents only monitor the deformation joints in the tunnel body. If water seepage occurs in other positions, it cannot be monitored in time, which reduces the effect of monitoring the entire tunnel. Therefore, this field urgently needs to improve the intelligent monitoring device for urban tunnel structures to solve the defects of the existing technology. Summary of the invention

[0006] In view of the deficiencies of the prior art, the utility model provides an intelligent monitoring device for urban tunnel structures, which can realize multi-angle and long-distance monitoring of the monitoring instrument body and improve the monitoring effect of the monitoring instrument body on the tunnel body.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an intelligent monitoring device for urban tunnel structure, comprising a monitoring instrument body installed on the top wall of a tunnel body, and also comprising a sliding seat fixedly installed on the top wall of the tunnel body and having an inverted T-shaped cross-section, the sliding seat is provided with a moving unit that can move on the sliding seat along the tunnel body, an equipment box is provided at the lower part of the moving unit, the lower side of the equipment box is rotatably connected to an inverted U-shaped rotating frame, a rotating shaft is rotatably connected between opposite side walls in the rotating frame, a connecting rod and a first bevel gear are fixedly connected to the side of the rotating shaft, the lower end of the connecting rod is fixedly connected to an installation box, a clamping unit is provided in the installation box, the monitoring instrument body is fixed in the installation box through the clamping unit, a first drive motor and a second drive motor are provided in the equipment box, the first drive motor and the second drive motor drive the connecting rod and the rotating frame to rotate in multiple directions.

[0008] Preferably, the output end of the first drive motor is fixedly connected to the first gear, the output end of the second drive motor is fixedly connected to the second gear, one side of the rotating frame is fixedly connected to a third gear located in the equipment box and meshing with the second gear, a connecting shaft extending into the rotating frame passes through the third gear, an end of the connecting shaft away from the rotating frame is fixedly connected to a fourth gear meshing with the first gear, and an end of the connecting shaft located in the rotating frame is fixedly connected to a second bevel gear meshing with the first bevel gear.

[0009] Preferably, the moving unit includes two supporting plates symmetrically and fixedly connected to the upper part of the equipment box, a first elastic roller which is elastic and adapted to the sliding seat is provided between the two supporting plates, second elastic rollers adapted to the sliding seat are rotatably connected to the opposite sides of the upper ends of the two supporting plates, both supporting plates are provided with moving grooves on both sides, each of the moving grooves is slidably connected with an adapted moving block, a rotating shaft is passed through the two moving blocks, the first elastic roller is fixedly connected to the side of the rotating shaft, a third driving motor is fixedly installed on the side of one of the moving blocks, the output end of the third driving motor is fixedly connected to one end of the rotating shaft, and a first spring is provided between the bottom of the two moving grooves and the lower side of the two moving blocks.

[0010] Preferably, the lower side of each moving block is fixedly connected to a guide column, the first spring is sleeved on the side of the guide column, and the bottom of each moving groove is provided with a guide groove adapted to the guide column.

[0011] Preferably, the clamping unit comprises two clamping frames which are arranged in the installation box and adapted to the monitor body, and the opposite sides of the two clamping frames are fixedly connected with movable columns which penetrate the installation box, and the side surfaces of the movable columns are sleeved with second springs.

[0012] Preferably, the clamping frame is provided with a plurality of heat dissipation slots, the inner side wall of the installation box is provided with a plurality of heat dissipation holes, a pull ring is fixedly connected to the end of the movable column away from the clamping frame, and the upper and lower side walls of the installation box are provided with limit slots adapted to the clamping frame.

[0013] Preferably, a plurality of symmetrical arc-shaped support rods that are in contact with the inner wall of the tunnel body are fixedly installed on the opposite sides of the sliding seat, and symmetrical cleaning plates that are adapted to the sliding seat are fixedly connected to the sides of the two bearing plates.

[0014] In view of the deficiencies of the prior art, the utility model provides an intelligent monitoring device for urban tunnel structures, which overcomes the deficiencies of the prior art. The beneficial effects of the utility model are:

[0015] 1. In the utility model, a sliding seat is provided, and a mobile unit moves on the sliding seat to monitor a certain section in the tunnel body. In order to improve the monitoring range of the monitoring instrument body, the monitoring instrument body can be adjusted at multiple angles by starting the first drive motor and the second drive motor, thereby realizing multi-angle monitoring of the monitoring instrument body and improving the monitoring effect of the monitoring instrument body on the tunnel body.

[0016] 2. In the utility model, by setting a clamping unit, through the cooperation of a symmetrical clamping frame, a movable column and a second spring, the monitor body can be quickly fixedly installed in the installation box, which is convenient for the installer to install or disassemble the monitor body. In addition, the heat dissipation effect of the monitor body is improved by cooperating with the heat dissipation holes and the heat dissipation grooves, thereby extending the service life of the monitor body.

[0017] 3. In the utility model, a mobile unit is provided to drive the monitoring instrument body to move and monitor in the tunnel body, thereby reducing the number of monitoring instrument bodies to be installed in the tunnel body. At the same time, when the mobile unit moves, the cleaning plate can clean the sliding seat to prevent the mobile unit from being stuck.

[0018] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0020] Figure 1 This is a schematic diagram of the structure when the utility model is installed as a whole inside the tunnel body;

[0021] Figure 2 It is a structural schematic diagram of the sliding seat in the utility model;

[0022] Figure 3 It is a schematic diagram of the structure inside the equipment box of the utility model;

[0023] Figure 4 It is a structural schematic diagram of a partial cross-section of the installation box in the utility model;

[0024] Figure 5 It is a structural schematic diagram of the rotating frame in the utility model;

[0025] Figure 6 It is a structural schematic diagram of a partial cross-section of a load-bearing plate in the utility model.

[0026] In the figure: 1. monitor body; 2. tunnel body; 3. sliding seat; 4. mobile unit; 5. equipment box; 6. rotating frame; 7. rotating shaft; 8. connecting rod; 9. installation box; 10. clamping unit; 11. first bevel gear; 12. first drive motor; 13. second drive motor; 14. first gear; 15. second gear; 16. third gear; 17. connecting shaft; 18. fourth gear; 19. second bevel gear; 20. bearing plate; 21. first elastic roller; 22. second elastic roller; 23. third drive motor; 24. moving groove; 25. moving block; 26. rotating shaft; 27. first spring; 28. guide column; 29. ​​guide groove; 30. clamping frame; 31. moving column; 32. second spring; 33. heat dissipation groove; 34. heat dissipation hole; 35. pull ring; 36. cleaning plate; 37. arc support rod; 38. limit groove. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Embodiment 1

[0029] See also Figure 1-Figure 6, an intelligent monitoring device for urban tunnel structure, comprising a monitoring instrument body 1 installed on the top wall of a tunnel body 2, and also comprising a sliding seat 3 fixedly installed on the top wall of the tunnel body 2 and having an inverted T-shaped cross section, a moving unit 4 capable of moving on the sliding seat 3 along the tunnel body 2, a device box 5 is provided at the lower part of the moving unit 4, a rotating frame 6 in an inverted U shape is rotatably connected to the lower side of the device box 5, a rotating shaft 7 is rotatably connected between opposite side walls of the rotating frame 6, a connecting rod 8 and a first bevel gear 11 are fixedly connected to the side of the rotating shaft 7, a mounting box 9 is fixedly connected to the lower end of the connecting rod 8, a clamping unit 10 is provided in the mounting box 9, the monitoring instrument body 1 is fixed in the mounting box 9 through the clamping unit 10, and a device box 5 is provided in the mounting box 9 The first drive motor 12 and the second drive motor 13 drive the connecting rod 8 and the rotating frame 6 to rotate in multiple directions. The output end of the first drive motor 12 is fixedly connected to the first gear 14, and the output end of the second drive motor 13 is fixedly connected to the second gear 15. One side of the rotating frame 6 is fixedly connected to a third gear 16 located in the equipment box 5 and meshing with the second gear 15. A connecting shaft 17 extending into the rotating frame 6 passes through the third gear 16, and an end of the connecting shaft 17 away from the rotating frame 6 is fixedly connected to a fourth gear 18 meshing with the first gear 14, and an end of the connecting shaft 17 located in the rotating frame 6 is fixedly connected to a second bevel gear 19 meshing with the first bevel gear 11.

[0030] Specific implementation method in this embodiment: The structure of the monitoring instrument body 1 in this embodiment is similar to the structure of the existing monitoring device, such as an automatic monitoring device for leakage of the side wall of an urban tunnel disclosed in the patent with publication number CN216976435U. The monitoring instrument body 1 can be an infrared thermal imaging camera for monitoring water seepage inside the main body 2 of the urban tunnel. In this embodiment, the sliding seat 3 is first fixedly installed on the top wall of the tunnel main body 2 to be monitored, and a plurality of monitoring instrument bodies 1 are set by calculating the movable range of the mobile unit 4. The monitoring instrument body 1 is fixedly installed in the installation box 9 by the clamping unit 10. When it is necessary to monitor the inside of the tunnel main body 2, the mobile unit 4 is moved on the sliding seat 3 to monitor a certain section in the tunnel main body 2. In order to increase the monitoring range of the monitoring instrument body 1, it can be remotely controlled Start the first drive motor 12 and the second drive motor 13. When the first drive motor 12 is started, the output end of the first drive motor 12 drives the first gear 14 to rotate, the first gear 14 drives the fourth gear 18 to rotate, the fourth gear 18 drives the connecting shaft 17 to rotate, the connecting shaft 17 drives the second bevel gear 19 to rotate, the second bevel gear 19 drives the first bevel gear 11 to rotate, and the first bevel gear 11 drives the rotating shaft 7 to rotate, so as to adjust the angle of the monitoring instrument body 1. After the second drive motor 13 is started, the output end of the second drive motor 13 drives the second gear 15 to rotate, the second gear 15 drives the third gear 16 to rotate, and the third gear 16 drives the rotating frame 6 to rotate, so as to rotate the direction of the monitoring instrument body 1, thereby realizing multi-angle monitoring of the monitoring instrument body 1 and improving the monitoring effect of the monitoring instrument body 1 on the tunnel main body 2.

[0031] Among them, the monitoring instrument body 1, the first drive motor 12 and the second drive motor 13 mentioned above can all be purchased on the market. They are mature technologies and have been fully disclosed, so they are not repeated in the specification. The monitoring instrument body 1, the first drive motor 12 and the second drive motor 13 are all equipped with power connection lines, and they are electrically connected to the external main controller and 220V phase voltage (or chemical power supply) through the power lines, and the main controller can be a conventional known device such as a computer that plays a control role.

[0032] Embodiment 2

[0033] See also Figure 1 , Figure 3 and Figure 6, this embodiment includes the above-mentioned embodiment, wherein the moving unit 4 includes two supporting plates 20 symmetrically fixedly connected to the upper part of the equipment box 5, a first elastic roller 21 having elasticity and adapted to the sliding seat 3 is provided between the two supporting plates 20, and second elastic rollers 22 adapted to the sliding seat 3 are rotatably connected to the opposite sides of the upper ends of the two supporting plates 20, and the two supporting plates 20 are provided with moving grooves 24 on both sides thereof, and an adapted moving block 25 is slidably connected in each moving groove 24, and a rotating shaft 26 is passed through the two moving blocks 25, and the first elastic roller 21 is fixedly connected to the side of the rotating shaft 26, and a moving block 25 is fixedly installed on the side. There is a third drive motor 23, the output end of the third drive motor 23 is fixedly connected to one end of the rotating shaft 26, a first spring 27 is provided between the inner bottom of the two moving grooves 24 and the lower side of the two moving blocks 25, each moving block 25 is fixedly connected to the lower side with a guide column 28, the first spring 27 is sleeved on the side of the guide column 28, and a guide groove 29 adapted to the guide column 28 is opened at the inner bottom of each moving groove 24. A plurality of symmetrical arc-shaped support rods 37 that are in contact with the inner wall of the tunnel body 2 are fixedly installed on the opposite sides of the sliding seat 3, and a symmetrical cleaning plate 36 that is adapted to the sliding seat 3 is fixedly connected to the sides of the two bearing plates 20.

[0034] Specific implementation method in this embodiment: the above-mentioned first elastic roller 21 and second elastic roller 22 are both elastic, wherein the first spring 27 always has an upward thrust on the moving block 25, and then the first elastic roller 21 and the second elastic roller 22 are tightly clamped on the side of the sliding seat 3, wherein the guide column 28 prevents the first spring 27 from radial deformation, and one end of the guide column 28 can move in the guide groove 29. When the monitoring instrument body 1 needs to monitor the inside of the tunnel body 2 along the sliding seat 3, the output end of the third drive motor 23 is driven by starting the third drive motor 23. The rotating shaft 26 rotates, and when the rotating shaft 26 rotates, it drives the first elastic roller 21 to roll on the lower side of the sliding seat 3, and then drives the two supporting plates 20 and the monitoring instrument body 1 below to move along the sliding seat 3, thereby reducing the number of monitoring instrument bodies 1 to be installed in the tunnel body 2, while expanding the monitoring range and improving the monitoring effect. When the supporting plate 20 slides along the sliding seat 3, the cleaning plate 36 pushes the impurities on the upper side of the sliding seat 3 out of the sliding seat 3 to prevent the impurities falling on the sliding seat 3 from blocking the movement of the moving unit 4, and the arc-shaped support rod 37 is used to support the sliding seat 3.

[0035] Among them, the third drive motor 23 mentioned above can be purchased on the market. It is a mature technology and has been fully disclosed, so it is not repeated in the specification. The third drive motor 23 is equipped with a power connection line, and it is electrically connected to the external main controller and 220V phase voltage (or chemical power supply) through the power line, and the main controller can be a conventional known device such as a computer that plays a control role.

[0036] Implementation Three

[0037] See also Figure 3 and Figure 4 This embodiment includes all the above embodiments, wherein the clamping unit 10 includes two clip-on frames 30 arranged in the installation box 9 and adapted to the monitor body 1, the two clip-on frames 30 are fixedly connected to the opposite sides with movable columns 31 penetrating the installation box 9, and the side of the movable column 31 is sleeved with a second spring 32, a plurality of heat dissipation grooves 33 are opened on the clip-on frame 30, and a plurality of heat dissipation holes 34 are opened through the inner wall of the installation box 9, a pull ring 35 is fixedly connected to the end of the movable column 31 away from the clip-on frame 30, and the upper and lower side walls in the installation box 9 are provided with limit grooves 38 adapted to the clip-on frame 30.

[0038] Specific implementation method in this embodiment: when the monitor body 1 needs to be installed, the two movable columns 31 are pulled away from the installation box 9 through the pull ring 35. At this time, the second spring 32 is compressed, and the monitor body 1 is placed between the two clamping frames 30. The pull ring 35 is loosened, and the thrust of the second spring 32 clamps the clamping frame 30 on the side of the monitor body 1, and the monitor body 1 can be installed. When the monitor body 1 needs to be disassembled, the movable column 31 can be pulled in the same way, which is convenient for the installer to install or disassemble the monitor body 1. The limiting groove 38 limits the position of the clamping frame 30, and the heat dissipation groove 33 and the heat dissipation hole 34 provide heat dissipation and ventilation for the monitor body 1 to prevent the monitor body 1 from being damaged due to excessive temperature in the installation box 9.

[0039] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An intelligent monitoring device for urban tunnel structure, comprising a monitoring device body (1) installed on the top wall of a tunnel body (2), characterized in that: The invention also comprises a sliding seat (3) fixedly mounted on the top wall of the tunnel body (2) and having an inverted T-shaped cross section, the sliding seat (3) being provided with a moving unit (4) capable of moving on the sliding seat (3) along the tunnel body (2), an equipment box (5) being provided at the lower part of the moving unit (4), the lower side of the equipment box (5) being rotatably connected to an inverted U-shaped rotating frame (6), a rotating shaft (7) being rotatably connected between opposite side walls in the rotating frame (6), a connecting rod (8) and a first bevel gear (11) being fixedly connected to the side of the rotating shaft (7), a mounting box (9) being fixedly connected at the lower end of the connecting rod (8), a clamping unit (10) being provided in the mounting box (9), the monitoring instrument body (1) being fixed in the mounting box (9) by the clamping unit (10), a first driving motor (12) and a second driving motor (13) being provided in the equipment box (5), the first driving motor (12) and the second driving motor (13) driving the connecting rod (8) and the rotating frame (6) to rotate in multiple directions.

2. The intelligent monitoring device for urban tunnel structure according to claim 1, characterized in that: The output end of the first drive motor (12) is fixedly connected to a first gear (14), the output end of the second drive motor (13) is fixedly connected to a second gear (15), one side of the rotating frame (6) is fixedly connected to a third gear (16) located in the equipment box (5) and meshing with the second gear (15), a connecting shaft (17) extending into the rotating frame (6) passes through the third gear (16), one end of the connecting shaft (17) away from the rotating frame (6) is fixedly connected to a fourth gear (18) meshing with the first gear (14), and one end of the connecting shaft (17) located in the rotating frame (6) is fixedly connected to a second bevel gear (19) meshing with the first bevel gear (11).

3. The intelligent monitoring device for urban tunnel structure according to claim 1, characterized in that: The moving unit (4) comprises two supporting plates (20) symmetrically fixedly connected to the upper part of the equipment box (5); a first elastic roller (21) having elasticity and adapted to the sliding seat (3) is provided between the two supporting plates (20); second elastic rollers (22) adapted to the sliding seat (3) are rotatably connected to the side surfaces facing each other at the upper ends of the two supporting plates (20); moving grooves (24) are provided on both sides of the two supporting plates (20); a matching moving block (25) is slidably connected in each of the moving grooves (24); a rotating shaft (26) is passed between the two moving blocks (25); the first elastic roller (21) is fixedly connected to the side surface of the rotating shaft (26); a third driving motor (23) is fixedly installed on the side surface of one of the moving blocks (25); the output end of the third driving motor (23) is fixedly connected to one end of the rotating shaft (26); and first springs (27) are provided between the bottom of the two moving grooves (24) and the lower side surfaces of the two moving blocks (25).

4. The intelligent monitoring device for urban tunnel structure according to claim 3 is characterized in that: The lower side of each moving block (25) is fixedly connected to a guide column (28), the first spring (27) is sleeved on the side of the guide column (28), and the bottom of each moving groove (24) is provided with a guide groove (29) adapted to the guide column (28).

5. The intelligent monitoring device for urban tunnel structure according to claim 1, characterized in that: The clamping unit (10) comprises two clamping frames (30) arranged in the installation box (9) and adapted to the monitoring instrument body (1), and the two clamping frames (30) are fixedly connected to the opposite sides thereof with movable columns (31) penetrating the installation box (9), and the side surfaces of the movable columns (31) are sleeved with second springs (32).

6. The intelligent monitoring device for urban tunnel structure according to claim 5, characterized in that: The clamping frame (30) is provided with a plurality of heat dissipation slots (33), the inner side wall of the installation box (9) is provided with a plurality of heat dissipation holes (34), one end of the movable column (31) away from the clamping frame (30) is fixedly connected with a pull ring (35), and the upper and lower side walls of the installation box (9) are provided with limit slots (38) adapted to the clamping frame (30).

7. The intelligent monitoring device for urban tunnel structure according to claim 3 is characterized in that: A plurality of symmetrical arc-shaped support rods (37) that are in contact with the inner wall of the tunnel body (2) are fixedly mounted on opposite sides of the sliding seat (3), and symmetrical cleaning plates (36) that are adapted to the sliding seat (3) are fixedly connected to the sides of the two bearing plates (20).

Citation Information

Patent Citations

  • Urban tunnel side wall leakage automatic monitoring equipment

    CN216976435U

  • Intelligent monitoring device for urban tunnel structure

    CN217712681U