Tunnel disease detection module

Abstract

The application relates to the technical field of tunnel detection, in particular to a tunnel disease detection module, which comprises a tunnel disease inspection vehicle seat, the upper end of the tunnel disease inspection vehicle seat is fixedly provided with a mounting bracket, the upper end of the mounting bracket is movably provided with a detection piece mounting plate, the upper end of the detection piece mounting plate is provided with a disease detection mechanism, and the disease detection mechanism comprises a case seat, a limiting support rod and an arc-shaped base frame. The case seat, the limiting support rod and the arc-shaped base frame are combined to form a bracket structure, a plurality of groups of high-definition detection units can be installed, the limiting support can be satisfied, and the connecting lines of the high-definition detection units are not affected; through cooperation of the curved surface protective plate, the supporting expansion plate and the limiting frame seat, the curved surface protective plate can be quickly and conveniently assembled, the protection effect during recycling and external placement of the high-definition detection units is improved, the detection module as a whole can be protected, the impact of falling cracks and gravel in the tunnel is avoided, and the overall service life of the equipment is prolonged.

Description

Technical Field

[0001] This invention relates to the field of tunnel inspection technology, specifically a tunnel defect detection module. Background Technology

[0002] As a crucial transportation infrastructure, the safety of tunnels directly impacts the smooth flow of traffic and the safety of people's lives and property. Tunnels comprise multiple components, including lining, invert arches, drainage systems, and ventilation and lighting facilities. The characteristics of defects and detection methods vary significantly across different parts. Therefore, regular defect detection of tunnels is a critical step in ensuring their safe operation. Currently, tunnel inspection vehicles are among the most commonly used tunnel defect detection devices. They detect potential problems such as cracks, spalling, and water leakage in the tunnel lining, as well as blockages and damage in the drainage system. Before inspection, it is necessary to identify the key areas to be inspected in order to select appropriate detection devices and technologies. Currently, a comprehensive approach combining non-destructive testing, multi-sensor integration, image processing, and radar detection with high-precision instruments is mainly used to achieve rapid identification and quantitative analysis of defects.

[0003] In the prior art, such as the automatic control device for tunnel defect detection disclosed in CN206386151U, there are control systems and data acquisition systems mounted on a rail vehicle. The data acquisition system includes a detection device installed on a central control module. The detection device includes a fan-shaped bracket with multiple fan-shaped tray boxes arranged on it. The tray boxes are slidably mounted on the fan-shaped bracket. An industrial area array CCD camera and a laser rangefinder are integrated inside the tray box. The tray box is driven to slide on the fan-shaped bracket by a distance adjustment module. The control system controls the central control module and the distance adjustment module to adjust the position of each tray box according to the detection data of the laser rangefinder. By detecting and providing feedback, the position of the tray boxes is adjusted, which greatly improves the accuracy and effectiveness of data acquisition. The entire rail vehicle travels inside the tunnel to detect tunnel defects.

[0004] However, in actual use, when the tunnel is wide and high, the distance between the CCD camera on the rail vehicle and the tunnel roof and side walls will be too far, resulting in the inability to observe the details of the tunnel roof and side walls in the captured images, reducing the detection effect of tunnel defects; and the existing device lacks a protective structure for the detection module, thus affecting the overall service life and detection accuracy.

[0005] Therefore, this invention proposes a tunnel defect detection module to solve the problem that existing devices lack a protective structure for the detection module and that tunnel defect detection is limited. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a tunnel defect detection module to solve the problems mentioned in the background.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a tunnel defect detection module, comprising a tunnel defect inspection vehicle seat, a mounting bracket fixedly installed on the upper end of the tunnel defect inspection vehicle seat, a detection component mounting plate movably installed on the upper end of the mounting bracket, a defect detection mechanism provided on the upper end of the detection component mounting plate, the defect detection mechanism comprising a chassis base, a limiting support rod, and an arc-shaped base frame, the chassis base being fixedly installed on the upper surface of the detection component mounting plate, one end of the limiting support rod being connected through to the inner wall of the chassis base, and the other end of the limiting support rod being fixedly connected to the inner ring surface of the arc-shaped base frame, protective wing plates being fixedly connected to both sides of the arc-shaped base frame, and the arc-shaped base frame being... A limiting frame is fixedly connected to the outer ring surface of the frame. A detection telescopic assembly is provided between the limiting frame and the arc-shaped base frame. The detection telescopic assembly includes a rotating ring and two electric telescopic rods. The rotating ring is movably installed on the inner side of the limiting frame. Two sets of electric telescopic rods are provided and respectively hinged to the lower outer ring surface of the arc-shaped base frame. A high-definition detection unit is movably installed on the inner side of the rotating ring. A docking groove is provided on the outer side of the limiting frame. A support expansion plate is movably engaged on the inner surface of the docking groove. A curved guard plate is fixedly connected to the other end of the support expansion plate. A clearance groove is provided on the inner curved wall of the curved guard plate. An automatic locking assembly is provided between the support expansion plate and the limiting frame.

[0008] Preferably, the high-definition detection unit includes a telescopic base, a detection base, and a central tube. The outer surface of the central tube is slidably connected to the inner wall of the limiting support rod and the arc-shaped base. The central tube passes through the central inner wall of the telescopic base and is fixedly connected thereto. The outer surface of one end of the telescopic base is threadedly connected to the inner wall of the detection base. The outer surface of the detection base is movably connected to the inner wall of the clearance groove. A CCD camera is arranged on the outer center of the detection base. An illumination lamp group, a laser scanner, and an environmental sensor are respectively installed on both sides of the CCD camera.

[0009] Preferably, the central tube is provided with wires, which are electrically connected to the CCD camera, the lighting group, the laser scanner and the environmental sensor respectively. The end of the wire away from the detection seat is fixedly connected to a terminal, and the other end of the terminal is electrically connected to the chassis base.

[0010] Preferably, the outer surfaces of the telescopic seat on both sides are slidably connected to the inner surface of the limiting frame seat, and the telescopic seat is provided with reserved grooves on both sides away from the limiting frame seat. The inner wall of the reserved groove is fixedly connected with a limiting protrusion, and two sets of limiting protrusions are provided and are distributed in a mirror image on both sides of the telescopic seat.

[0011] Preferably, the inner wall of the rotating ring is provided with arc-shaped grooves, and the inner surface of the arc-shaped grooves is movably connected to the outer surface of the limiting protrusion.

[0012] Preferably, a retraction contact unit is provided between the end of the telescopic seat away from the detection seat and the outer ring surface of the arc-shaped base frame. The retraction contact unit includes a contact spring, an annular sleeve, and a compression bladder. One end of the contact spring is fixedly connected to the surface of the telescopic seat away from the detection seat, and the other end of the contact spring is fixedly connected to the outer surface of the annular sleeve. An I-shaped ring is engaged on the side of the annular sleeve away from the contact spring, and the other end of the I-shaped ring is fixedly connected to one end of the compression bladder. The compression bladder extends to the inner ring sidewall of the arc-shaped base frame, and an air jet hole is provided at one outer end of the compression bladder.

[0013] Preferably, a sleeve plate is fixedly connected to the outer ring surface of the I-shaped ring, and an elastic element is fixedly connected to the side surface of the sleeve plate away from the telescopic seat. The other end of the elastic element is fixedly connected to the outer ring curved surface of the arc-shaped base frame. The elastic element is provided in four sets and is distributed in a circular array about the center of the I-shaped ring.

[0014] Preferably, a horizontal groove is provided on the inner wall of the limiting frame, the horizontal groove is interconnected with the docking groove, and a locking hole is provided on the inner ring surface of the arc-shaped base, the locking hole corresponds one-to-one with the horizontal groove, and the locking hole is composed of an inner inclined surface, a plane and an outer inclined surface.

[0015] Preferably, a human-shaped groove is also provided on the inner wall of the center of the limiting frame, and an abutment block is fixedly connected to the inner surface of the human-shaped groove.

[0016] Preferably, the automatic locking assembly includes a locking strip, the outer side of which movably abuts against the outer surface of the abutment block, the locking strip being fixedly connected to the end of the support expansion plate away from the curved guard plate, and the outer surface of the locking strip penetrating the inner wall of the horizontal groove and the locking hole.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This invention proposes a tunnel defect detection module. By varying the longitudinal height of the detection component mounting plate and the overall defect detection mechanism, the distance between the high-definition detection unit and the tunnel roof and sidewalls can be adjusted according to actual needs, improving the accuracy of tunnel defect detection. A support structure is formed by the chassis base, limiting support rods, and arc-shaped base frame, enabling the installation of multiple high-definition detection units while providing limiting support without affecting the connection lines of the high-definition detection units. The curved protective plate and supporting expansion plate, in conjunction with the limiting frame, enable quick and convenient assembly of the curved protective plate, improving the protection effect during the retrieval and deployment of the high-definition detection units. It also assists in the overall protection of the detection module, preventing impact from falling fragments and gravel within the tunnel, thus extending the overall service life of the equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the tunnel detection environment state of the present invention;

[0020] Figure 2 This is a schematic diagram of the disease detection mechanism of the present invention in its elongated state.

[0021] Figure 3 This is a schematic diagram of the structure of the disease detection mechanism in the recovery state according to the present invention;

[0022] Figure 4 For the present invention Figure 3 Schematic diagram of the cross-sectional structure at point AA;

[0023] Figure 5 This is a schematic diagram of the disassembled structure of the disease detection mechanism of the present invention;

[0024] Figure 6 This is a schematic diagram of the high-definition detection unit recovery state structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the extended state structure of the high-definition detection unit of the present invention;

[0026] Figure 8 This is a partial disassembly diagram of the curved protective plate and high-definition detection unit of the present invention;

[0027] Figure 9 For the present invention Figure 8 Schematic diagram of the cross-sectional structure at BB;

[0028] Figure 10 This is a schematic cross-sectional view of the BB section when the support expansion plate and the limiting frame seat are engaged.

[0029] Figure 11 This is a schematic cross-sectional view of the CC section when the support expansion plate and the limiting frame seat of the present invention are fitted together;

[0030] Figure 12 This is a schematic diagram of the disassembled structure of the high-definition detection unit and the limiting frame of the present invention;

[0031] Figure 13 For the present invention Figure 4 A magnified structural diagram at point A;

[0032] Figure 14 For the present invention Figure 10 A magnified structural diagram at point B;

[0033] Figure 15 For the present invention Figure 11 A magnified structural diagram at point C;

[0034] Figure 16 For the present invention Figure 12A magnified structural diagram at point D;

[0035] Figure 17 This is a schematic diagram of the connection structure between the arc-shaped base frame, the limiting frame, and the rotating ring of the present invention;

[0036] Figure 18 This is a schematic diagram of the connection structure between the arc-shaped base frame and the limiting frame seat of the present invention;

[0037] Figure 19 This is a schematic diagram of the connection structure between the arc-shaped base frame and the protective wing plate of the present invention.

[0038] In the diagram: 1. Tunnel defect inspection vehicle seat; 11. Mounting bracket; 111. Base plate; 112. Electric telescopic rod one; 113. Limiting post; 12. Detection component mounting plate; 2. Defect detection mechanism; 21. Chassis base; 22. Limiting support rod; 23. Arc-shaped base frame; 230. Locking hole; 2301. Inner inclined surface; 2302. Plane; 2303. Outer inclined surface; 231. Limiting frame seat; 2310. Connecting groove; 23100. Horizontal groove; 2311. Human-shaped groove; 2312. Abutting block; 232. Rotating ring; 2320. Arc-shaped groove; 233. 1. Electric telescopic pole II; 2331. Connecting truss; 24. Protective wing plate; 25. High-definition detection unit; 251. Telescopic seat; 252. Detection seat; 2511. Limiting protrusion; 253. Central tube; 2531. Wire; 2532. Wiring terminal; 26. Curved guard plate; 260. Clearance groove; 27. Support expansion plate; 271. Clip strip; 28. Recycling contact unit; 281. Contact spring strip; 282. Annular sleeve; 283. I-shaped ring; 2831. Socket plate; 2832. Elastic element; 284. Compression bladder; 2841. Air jet hole. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Example 1, please refer to Figures 1-19This invention provides a technical solution: a tunnel defect detection module, including a tunnel defect inspection vehicle seat 1. A mounting bracket 11 is fixedly installed on the upper end of the tunnel defect inspection vehicle seat 1. A detection component mounting plate 12 is movably installed on the upper end of the mounting bracket 11. A base plate 111 is fixedly connected to the inner side of the lower end of the mounting bracket 11. An electric telescopic rod 112 and a limiting post 113 are fixedly connected to the upper surface of the base plate 111. The limiting post 113 consists of a fixed sleeve and an extension rod. The output end of the electric telescopic rod 112 and the top end of the extension rod are respectively fixedly connected to the bottom end of the detection component mounting plate 12. The limiting post 113 serves as an auxiliary support and limiting element. During the extension and retraction of the electric telescopic rod 112… To prevent the mounting plate 12 from shifting or shaking and to ensure the stability of the testing process, a defect detection mechanism 2 is provided at the upper end of the mounting plate 12. The defect detection mechanism 2 includes a chassis base 21, a limiting support rod 22, and an arc-shaped base 23. The chassis base 21 is fixedly installed on the upper surface of the mounting plate 12. One end of the limiting support rod 22 is connected through to the inner wall of the chassis base 21, and the other end of the limiting support rod 22 is fixedly connected to the inner ring surface of the arc-shaped base 23. Protective wing plates 24 are fixedly connected to both sides of the arc-shaped base 23. The protective wing plates 24 protect the internal structure, reduce the entry of dust and debris into the defect detection mechanism 2, and ensure the normal operation of the testing equipment. Okay, and reflective strips and warning boards can be attached to the outer side of the protective wing plate 24 to facilitate visual avoidance by personnel during inspections; the outer ring surface of the arc-shaped base 23 is fixedly connected to the limiting frame 231, and a detection telescopic assembly is provided between the limiting frame 231 and the arc-shaped base 23. The detection telescopic assembly includes a rotating ring 232 and an electric telescopic rod 233. A high-definition detection unit 25 is movably installed on the inner side of the rotating ring 232; the high-definition detection unit 25 includes a telescopic seat 251, a detection seat 252 and a central tube 253. The outer surface of the central tube 253 is slidably connected to the limiting support rod 22 and the inner wall of the arc-shaped base 23. The central tube 253 passes through the central inner wall of the telescopic seat 251 and is fixedly connected to it. One outer surface of the outer end of the 251 is threaded to the inner wall of the detection seat 252. The outer surface of the detection seat 252 is movably connected to the inner wall of the clearance groove 260. A CCD camera is set on the outer center of the detection seat 252. An illumination group, a laser scanner, and an environmental sensor are respectively installed on both sides of the CCD camera. A wire 2531 is set inside the central tube 253. The wire 2531 is electrically connected to the CCD camera, the illumination group, the laser scanner, and the environmental sensor respectively. A terminal 2532 is fixedly connected to the end of the wire 2531 away from the detection seat 252. The other end of the terminal 2532 is electrically connected to the chassis base 21 to realize data transmission and control signal feedback.

[0041] In this embodiment, the defect detection mechanism 2 is supported by an inner frame 21 and an outer frame 23, connected by multiple arrayed limiting support rods 22. When the height of the defect detection mechanism 2 needs to be adjusted, the electric telescopic rod 112 is opened, and its output end drives the detection component mounting plate 12 to move longitudinally, thus changing the vertical height of the defect detection mechanism 2. This allows the multiple high-definition detection units 25 to fit more closely to the top and side walls of the tunnel, enhancing the accuracy and clarity of defect detection in the tunnel area. The detection module is driven by the tunnel defect inspection vehicle seat 1. After entering the tunnel, multiple sets of high-definition detection units 25 are controlled to extend with varying diameters to ensure that defects in various areas of the tunnel's top and side walls are detected during the inspection process. It is worth noting that the limiting support rod 22 here not only serves as a connecting component between the chassis base 21 and the arc-shaped base frame 23, but also provides a limit for the movement of the central tube 253 within the limiting support rod 22 when the high-definition detection unit 25 is extending and retracting with varying diameters. At this time, the limiting support rod 22 provides a limit for the movement of the central tube 253 and provides space and protection for the wire 2531 and the terminal 2532, preventing the wire from getting tangled and not affecting the normal detection work of the high-definition detection unit 25.

[0042] It should be noted that the environmental sensor integrated into the high-definition detection unit 25 can perceive environmental parameters inside the tunnel in real time, such as temperature, humidity, and light intensity, and transmit the data to the control system inside the chassis 21. Simultaneously, the onboard CCD camera, working in conjunction with the lighting assembly, continuously captures images of the tunnel lining surface according to a set shooting frequency and angle. The lighting assembly provides the CCD camera with sufficient resolution and illumination compensation capabilities, ensuring clear images are captured under different lighting conditions. Through the collaborative work of the environmental sensor and the CCD camera, image data of the tunnel interior is acquired, providing a foundation for subsequent defect analysis. The laser scanner can perform three-dimensional scanning of the tunnel interior wall, acquiring the geometric shape and size information of the tunnel surface. The laser scanner uses high-precision laser ranging technology, precisely calculating the distance and position of various points on the tunnel interior wall by emitting a laser beam and measuring the time of reflected light, thereby constructing a three-dimensional model of the tunnel surface. Combined with the CCD... Image data captured by cameras can more accurately assess the severity and development trend of tunnel defects. For example, by analyzing image data, defects such as cracks and water leakage on the tunnel surface can be identified, while three-dimensional scanning data can provide information on the geometric dimensions and spatial location of defects, providing a more scientific basis for tunnel maintenance and repair.

[0043] Example 2, see attached document Figures 1-19Based on Embodiment 1, in order to achieve variable diameter telescopic movement of multiple sets of high-definition detection units 25: a rotating ring 232 is movably installed inside the limiting frame 231; two sets of electric telescopic rods 233 are provided and respectively hinged to the lower outer ring surface of the arc-shaped base 23; a connecting truss 2331 is fixedly installed on the outer ring surface of the arc-shaped base 23, and the lower end of the connecting truss 2331 is movably connected to the end of the electric telescopic rod 233 away from the arc-shaped base 23; telescopic seat 251 The outer surfaces of both sides of the telescopic seat 251 are slidably connected to the inner surface of the limiting frame 231. The telescopic seat 251 has pre-reserved slots on both sides away from the limiting frame 231. Limiting protrusions 2511 are fixedly connected to the inner walls of the pre-reserved slots. Two sets of limiting protrusions 2511 are provided and mirror-distributed on both sides of the telescopic seat 251. Arc-shaped grooves 2320 are respectively provided on the inner walls of the rotating ring 232. The inner surface of the arc-shaped grooves 2320 is movably connected to the outer surface of the limiting protrusions 2511.

[0044] Before the detection module enters the tunnel, multiple sets of high-definition detection units 25 are in a retracted state, as shown in the attached diagram. Figure 6 As shown, upon entering the tunnel, the distance between the defect detection mechanism 2 and the tunnel ceiling and sidewalls needs to be adjusted according to actual requirements. Simultaneously, multiple high-definition detection units 25 are extended synchronously to perform defect detection. (Refer to...) Figure 7 As shown, specifically: Figures 6-7 As shown, while the electric telescopic rod 233 on the lower left side of the arc-shaped base 23 retracts, the lower electric telescopic rod 233 extends. At this time, the rotating ring 232 rotates counterclockwise under the limiting action of the limiting frame 231, and the positions of each arc-shaped groove 2320 change, which moves the limiting protrusions 2511 installed on both sides of the telescopic seat 251. At this time, the high-definition detection unit 25 is limited by two sets of parallel limiting frames 231, realizing multiple sets of synchronous outward extension. The detection seat 252 extends the curved guard plate 26 from the avoidance groove 260 to perform detection on the tunnel sidewall and top wall. This design enables real-time detection, allowing for the quick retraction and extension of multiple high-definition detection units 25. This avoids collisions during transportation and when idle, thus extending the overall service life. Notably, two sets of rotating rings 232 are distributed parallel to each other on both sides of the high-definition detection unit 25 and are integrated with the arc-shaped base frame 23. This design not only limits the movement of the rotating rings 232 and provides protection during the retraction of the high-definition detection unit 25, but also limits the movement of the high-definition detection unit 25 during its extension and retraction, achieving a "one-unit-multiple-use" effect.

[0045] Example 3, refer to Appendix Figures 1-19Based on Embodiment 2, in order to achieve stability of the high-definition detection unit 25 during retraction and extension, and to assist in blowing away dust from the upper part of the detection component mounting plate 12: a retraction abutment unit 28 is provided between the end of the telescopic seat 251 away from the detection seat 252 and the outer ring surface of the arc-shaped base 23. The retraction abutment unit 28 includes an abutment spring 281, an annular sleeve 282, and a compression bladder 284. One end of the abutment spring 281 is fixedly connected to the surface of the telescopic seat 251 away from the detection seat 252, and the other end of the abutment spring 281 is fixedly connected to the outer surface of the annular sleeve 282. The annular sleeve 282 is located away from the abutment spring 282. One side of the spring strip 281 is snapped with an I-shaped ring 283, and the other end of the I-shaped ring 283 is fixedly connected to one end of the compression bladder 284. The compression bladder 284 extends to the inner ring sidewall of the arc-shaped base 23. An air jet hole 2841 is opened at one outer end of the compression bladder 284. A sleeve plate 2831 is fixedly connected to the outer ring surface of the I-shaped ring 283. An elastic element 2832 is fixedly connected to the side surface of the sleeve plate 2831 away from the telescopic seat 251. The other end of the elastic element 2832 is fixedly connected to the outer ring curved surface of the arc-shaped base 23. Four sets of elastic elements 2832 are arranged in a circular array about the center of the I-shaped ring 283.

[0046] See attached document Figure 14 and Figure 16 As shown, a retraction contact unit 28 is provided between the side of the telescopic seat 251 away from the detection seat 252 and the outer ring surface of the arc-shaped base 23, and is distributed on both sides of the central tube 253. When the telescopic seat 251 extends outward, the contact spring strip 281 connected to the inner side of the telescopic seat 251 is stretched and deformed. At this time, the elastic element 2832 opens. When the telescopic seat 251 retracts inward, the inner side of the telescopic seat 251 squeezes the contact spring strip 281. At this time, the annular sleeve 282 and the I-shaped ring 283 apply pressure to the compression bladder 284. When the compression bladder 284 is compressed, the internal air is ejected outward through the jet hole 2841, and at this time, the elastic element 2832 distributed on the outside of the compression bladder 284 is compressed. The recovery abutment unit 28 can not only provide buffering for the high-definition detection unit 25 during recovery, avoid impact and vibration, and improve its stability, but also assist in blowing away dust on the surface of the detection component mounting plate 12, preventing the detection module from being damaged by dust during tunnel inspection, thereby further extending the service life of the equipment.

[0047] Example 4, see attached document Figures 1-19Based on Embodiment 3, in order to achieve rapid mounting between multiple sets of curved protective plates 26 and limiting frame seats 231, and to achieve outer protection of the high-definition detection unit 25: a docking groove 2310 is provided on the outer side of the limiting frame seat 231, a support expansion plate 27 is movably engaged on the inner surface of the docking groove 2310, and the other end of the support expansion plate 27 is fixedly connected to the curved protective plate 26. A clearance groove 260 is provided on the curved inner wall of the curved protective plate 26; a horizontal groove 23100 is provided on the inner wall of the limiting frame seat 231, the horizontal groove 23100 and the docking groove 2310 are interconnected, and a locking hole 230 is provided on the inner ring surface of the arc-shaped base frame 23, the locking hole 230 and the horizontal groove 23100 are interconnected. The slots 23100 correspond one-to-one, and the locking hole 230 is composed of an inner inclined surface 2301, a flat surface 2302 and an outer inclined surface 2303; a human-shaped slot 2311 is also provided on the inner wall of the center of the limiting frame 231, and an abutment block 2312 is fixedly connected to the inner surface of the human-shaped slot 2311; an automatic locking assembly is provided between the supporting expansion plate 27 and the limiting frame 231; the automatic locking assembly includes a locking strip 271, the outer side of the locking strip 271 is in movable contact with the outer surface of the abutment block 2312, the locking strip 271 is fixedly connected to the end of the supporting expansion plate 27 away from the curved guard plate 26, and the outer surface of the locking strip 271 penetrates the horizontal slot 23100 and the inner wall of the locking hole 230;

[0048] In this embodiment, refer to the appendix. Figure 4 , Figure 8 , Figure 9 , Figure 11 and Figure 13 As shown, the limiting frame 231 externally engages with the support expansion plate 27, forming an internal support structure for the curved guard plate 26. When the support expansion plate 27 is assembled with the limiting frame 231, the inner side of the support expansion plate 27 is aligned with the mating groove 2310 for initial engagement. Simultaneously, the engaging strip 271 is inserted through the horizontal groove 23100. After continuous advancement, the engaging strip 271 extends completely from the end of the horizontal groove 23100 and corresponds to the locking hole 230 on the inner ring sidewall of the arc-shaped base frame 23. (Refer to the attached diagram.) Figure 15 As shown, the hook end of the locking strip 271 slightly abuts against the inner inclined surface 2301, and then resets after passing through the plane 2302. At this time, the locking strip 271 is abutted by the abutting block 2312, so that the hook end of the locking strip 271 is pressed against the side wall of the locking hole 230. In this way, multiple sets of curved guard plates 26 and support expansion plates 27 can be quickly assembled. When it is necessary to disassemble a certain set of curved guard plates 26 and support expansion plates 27, two fingers respectively push the hook end of the locking strip 271 inward. At this time, the abutting block 2312 presses inward, and while pushing inward, the locking strip 271 is pushed outward. The other hand pulls the curved guard plate 26 and support expansion plate 27 outward as a whole to achieve disassembly.

[0049] The working principle and usage process of this invention are as follows: In actual use, before the defect detection module enters the tunnel, multiple sets of high-definition detection units 25 are in a stored state, and the entire detection module is in a suitable transportation and preparation state. After entering the tunnel, according to actual needs, the electric telescopic rod 112 is opened, driving the detection component mounting plate 12 to move longitudinally, adjusting the overall height of the defect detection mechanism 2 so that the distance between the multiple sets of high-definition detection units 25 and the tunnel top and side walls is appropriate. The multiple sets of high-definition detection units 25 are then controlled to extend synchronously to carry out defect detection work. Specifically, the diameter extension and retraction of the high-definition detection units 25 is achieved by controlling the actions of relevant components of the arc-shaped base frame 23. The detection unit 252 extends from the curved protective plate 26 to conduct real-time detection of the tunnel sidewalls and roof. During tunnel inspection, environmental sensors perceive and transmit environmental parameters in real time. The CCD camera on the high-definition detection unit 25 captures images in conjunction with the lighting group, and the laser scanner performs three-dimensional scanning. The acquired data is transmitted to the control system inside the chassis 21 for analysis to assess the tunnel defects. When the inspection is completed or needs to be stored, multiple sets of high-definition detection units 25 are controlled to be retrieved synchronously. The buffering and purging effect of the retrieval contact unit 28 improves the retrieval stability and equipment cleanliness, and the detection module is adjusted to a suitable state for easy transportation or next use.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tunnel defect detection module, comprising a tunnel defect inspection vehicle seat (1), wherein a mounting bracket (11) is fixedly installed on the upper end of the tunnel defect inspection vehicle seat (1), and a detection component mounting plate (12) is movably installed on the upper end of the mounting bracket (11), characterized in that: The upper end of the mounting plate (12) for the test piece is provided with a disease detection mechanism (2). The disease detection mechanism (2) includes a chassis base (21), a limiting support rod (22), and an arc-shaped base frame (23). The chassis base (21) is fixedly installed on the upper surface of the mounting plate (12). One end of the limiting support rod (22) is connected to the inner wall of the chassis base (21), and the other end of the limiting support rod (22) is fixedly connected to the inner ring surface of the arc-shaped base frame (23). Protective wing plates (24) are fixedly connected to both sides of the arc-shaped base frame (23). A limiting frame seat (231) is fixedly connected to the outer ring surface of the arc-shaped base frame (23). A detection telescopic assembly is provided between the limiting frame seat (231) and the arc-shaped base frame (23). The detection telescopic assembly includes a rotating... The rotating ring (232) and the electric telescopic rod II (233) are provided. The rotating ring (232) is movably installed on the inner side of the limiting frame (231). The electric telescopic rod II (233) is provided with two sets and is respectively hinged to the lower outer ring surface of the arc-shaped base (23). A high-definition detection unit (25) is movably installed on the inner side of the rotating ring (232). A docking groove (2310) is opened on the outer side of the limiting frame (231). A support expansion plate (27) is movably snapped onto the inner surface of the docking groove (2310). A curved guard plate (26) is fixedly connected to the other end of the support expansion plate (27). A clearance groove (260) is opened on the curved inner wall of the curved guard plate (26). An automatic snap-fit ​​assembly is provided between the support expansion plate (27) and the limiting frame (231). The high-definition detection unit (25) includes a telescopic seat (251), a detection seat (252), and a central tube (253). The outer surface of the central tube (253) is slidably connected to the inner wall of the limiting support rod (22) and the arc-shaped base frame (23). The central tube (253) passes through the central inner wall of the telescopic seat (251) and is fixedly connected to it. The outer surface of one end of the telescopic seat (251) is threadedly connected to the inner wall of the detection seat (252). The outer surface of the detection seat (252) is movably connected to the inner wall of the clearance groove (260). The outer surfaces of the telescopic seat (251) on both sides are slidably connected to the inner surface of the limiting frame seat (231). The telescopic seat (251) has reserved grooves on both sides away from the limiting frame seat (231). The inner wall of the reserved groove is fixedly connected to the limiting protrusion (2511). Arc-shaped grooves (2320) are respectively provided on the inner wall of the rotating ring (232), and the inner surface of the arc-shaped grooves (2320) is movably connected to the outer surface of the limiting protrusion (2511). A retraction contact unit (28) is provided between the end of the telescopic seat (251) away from the detection seat (252) and the outer ring surface of the arc-shaped base frame (23). The retraction contact unit (28) includes a contact spring (281), an annular sleeve (282) and a compression bladder (284). One end of the contact spring (281) is fixedly connected to the side surface of the telescopic seat (251) away from the detection seat (252), and the other end of the contact spring (281) is fixedly connected to the outer surface of the annular sleeve (282). An I-shaped ring (283) is snapped onto the side of the annular sleeve (282) away from the contact spring (281). The other end of the I-shaped ring (283) is fixedly connected to one end of the compression bladder (284), and the compression bladder (284) extends to the inner ring sidewall of the arc-shaped base frame (23). An air jet hole (2841) is opened at the outer end of the compression bladder (284). The outer ring surface of the I-shaped ring (283) is fixedly connected to a sleeve plate (2831), and an elastic element (2832) is fixedly connected to the side surface of the sleeve plate (2831) away from the telescopic seat (251). The other end of the elastic element (2832) is fixedly connected to the outer ring curved surface of the arc-shaped base frame (23).

2. The tunnel defect detection module according to claim 1, characterized in that: A CCD camera is provided on the outer center of the detection seat (252), and an illumination group, a laser scanner and an environmental sensor are respectively installed on both sides of the CCD camera.

3. The tunnel defect detection module according to claim 2, characterized in that: The central tube (253) is equipped with a wire (2531) inside. The wire (2531) is electrically connected to the CCD camera, the lighting group, the laser scanner and the environmental sensor respectively. One end of the wire (2531) away from the detection seat (252) is fixedly connected to a terminal (2532). The other end of the terminal (2532) is electrically connected to the chassis base (21).

4. A tunnel defect detection module according to claim 2, characterized in that: The limiting protrusions (2511) are provided in two sets and are distributed in a mirror image on both sides of the telescopic seat (251).

5. A tunnel defect detection module according to claim 1, characterized in that: The elastic element (2832) is provided with four sets of circular arrays distributed about the center of the I-shaped ring (283).

6. A tunnel defect detection module according to claim 1, characterized in that: The inner wall of the limiting frame (231) is provided with a horizontal groove (23100), which is connected to the docking groove (2310). The inner ring surface of the arc-shaped base (23) is provided with a locking hole (230), which corresponds to the horizontal groove (23100). The locking hole (230) is composed of an inner inclined surface (2301), a plane (2302) and an outer inclined surface (2303).

7. A tunnel defect detection module according to claim 6, characterized in that: A human-shaped groove (2311) is also provided on the inner wall of the center of the limiting frame (231), and an abutment block (2312) is fixedly connected to the inner surface of the human-shaped groove (2311).

8. A tunnel defect detection module according to claim 7, characterized in that: The automatic locking assembly includes a locking strip (271), the outer side of which is in contact with the outer surface of the abutment block (2312), the locking strip (271) is fixedly connected to one end of the support expansion plate (27) away from the curved guard plate (26), and the outer surface of the locking strip (271) penetrates the inner wall of the horizontal groove (23100) and the locking hole (230).

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