Tunnel maintenance inspection device and system

Abstract

The embodiment of the utility model relates to the technical field of engineering, and discloses a tunnel maintenance inspection device and system.The device is characterized in that a plurality of supporting rods are freely spliced to form a supporting beam suitable for a tunnel structure, meanwhile, a plurality of camera shooting detection units are arranged on the supporting beam at intervals, and the supporting beam is arranged on a base; on one hand, all positions of the inner wall of the tunnel in the transverse direction can be conveniently shot and inspected through the multiple camera shooting detection units, on the other hand, the supporting beam can be moved through the sliding wheels at the bottom of the base, and then all positions of the interior of the tunnel in the longitudinal direction can be shot and inspected through the camera shooting detection units. By means of the tunnel maintenance inspection system and method, all-directional and full-coverage maintenance inspection in the tunnel can be achieved, the working efficiency of tunnel maintenance detection can be effectively improved, and the safety of tunnel detection is improved.

Description

Technical Field

[0001] The utility model embodiment relates to the technical field of highway engineering, and in particular to a tunnel maintenance inspection device and system. Background Art

[0002] my country is one of the countries with the largest number of tunnels, the largest construction scale and the fastest development speed in the world. Data shows that by the end of 2022, there will be 17,873 railway tunnels in operation in my country with a total length of 21,978 km; 4,178 high-speed railway tunnels will be built with a total length of 7,032 km. There are 24,850 highway tunnels in my country with a total length of 26.7843 million meters. The number of tunnels under construction is still large, and China is facing huge pressure on tunnel maintenance and inspection.

[0003] The inventors of this application found in their research that, currently, tunnel maintenance inspections are mostly carried out by inspectors using planned, regular, and full-coverage manual inspection methods. Inspectors mainly use handheld instruments or direct observation with the naked eye to identify defects in tunnel structures and rate these defects. Not only is the inspection work intensive, but the inspection efficiency is low. In addition, since the tunnel is full of dust and lacks natural light, the inspection results are highly subjective; coupled with the possible dangers of the tunnel during operation, there are also major safety hazards. Utility Model Content

[0004] In view of the above problems, the embodiments of the present utility model provide a tunnel maintenance inspection device and system for solving the above technical problems in the prior art.

[0005] On the one hand, the embodiment of the present application provides a tunnel maintenance inspection device, including: a base, a plurality of support rods and a plurality of camera detection units;

[0006] The base comprises a first base and a second base, and pulleys are respectively provided at the bottom of the first base and the second base, and the pulleys are used to drive the base to move;

[0007] The plurality of support rods are in an arc-shaped structure, and the plurality of support rods are connected to each other to form a circular arch support beam to adapt to the shape of the tunnel to be inspected, and the two ends of the support beam are respectively arranged on the first base and the second base;

[0008] A plurality of the camera detection units are arranged at intervals outside the support beam for inspecting the tunnel to be inspected.

[0009] In some embodiments, the base includes a controller; the pulley includes a motor; the controller is electrically connected to the motor of the pulley, and is used to control the motor to drive the pulley to drive the base to move.

[0010] In some embodiments, the support rod is an internal hollow cylindrical structure, and one end of the support rod is contracted inward to form a plug-in portion for being plugged and fixed with the other end of another support rod.

[0011] In some embodiments, the device also includes a support rod fixing assembly; the support rod fixing assembly includes a connecting block and a plurality of fixing bolts; a plurality of fixing holes are provided on the connecting block; a first through hole is provided on the side surface of one end of the support rod; the fixing holes on the connecting block are respectively arranged corresponding to the first through holes on the adjacent support rods to be connected, and the plurality of fixing bolts respectively penetrate the first through holes and the fixing holes, and are used to fix the adjacent support rods to be connected through the connecting block.

[0012] In some embodiments, a plurality of second through holes are disposed on a side surface of one end of the support rod adjacent to the first through hole; and a plurality of the camera detection units are disposed on the support rod through the second through holes.

[0013] In some embodiments, the video detection unit includes a fixing seat, a connecting rod and a camera; the fixing seat is fixed to the support rod through a plurality of the second through holes; one end of the connecting rod is connected to the fixing seat, and the other end is connected to the camera, and the connecting rod is used to fix the position of the camera; the camera is used to inspect the tunnel to be inspected.

[0014] In some embodiments, one end of the connecting rod is movably connected to the fixing seat, and the other end of the connecting rod is movably connected to the camera. The connecting rod is used to adjust and fix the position of the camera through interference fit with the fixing seat and the camera.

[0015] In some embodiments, the device further includes a lighting unit, and the lighting unit is disposed adjacent to the camera.

[0016] In some embodiments, the camera and the lighting unit are electrically connected to the controller respectively; and the controller is used to control the camera and the lighting unit.

[0017] On the other hand, the present application proposes a tunnel maintenance and inspection system, which includes an inspection terminal and the tunnel maintenance and inspection device described in the above embodiment; the inspection terminal is used to communicate with the tunnel maintenance and inspection device, and is used to perform inspection operations on the tunnel to be inspected through the tunnel maintenance and inspection device.

[0018] The tunnel maintenance inspection device provided in the embodiment of the present application is formed by freely splicing a plurality of support rods to form a support beam adapted to the tunnel structure, and a plurality of camera detection units are arranged at intervals on the support beam, and the support beam is arranged on a base. On the one hand, the plurality of camera detection units can conveniently shoot and inspect various positions in the lateral direction of the inner wall of the tunnel, and on the other hand, the support beam can be moved by the pulley at the bottom of the base, so that the camera detection unit can shoot and inspect various positions in the longitudinal direction of the tunnel. The tunnel maintenance inspection device proposed in the embodiment of the present application can be freely spliced ​​according to the tunnel structure, can adapt to a variety of scenes, and can move freely, and can autonomously shoot through the camera detection unit, which greatly improves the convenience of maintenance inspection, improves the efficiency of maintenance inspection, and also solves the manpower input and maintenance cost of maintenance inspection.

[0019] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0021] Figure 1 The schematic diagram of the structure of the tunnel maintenance inspection device provided by the embodiment of the utility model is shown.

[0022] Figure 2 A schematic diagram of the support rod structure provided by an embodiment of the utility model is shown;

[0023] Figure 3 The figure shows a schematic diagram of the structure of the camera detection unit provided in the embodiment of the utility model.

[0024] The reference numerals in the specific implementation manner are as follows:

[0025] 100. Tunnel maintenance inspection device; 110. Base; 111. First base; 112. Second base; 113. Pulley; 120. Support rod; 121. First support rod; 122. Second support rod; 1211. First through hole; 1212. Second through hole; 130. Support rod fixing assembly; 131. Connecting block; 132. Fixing bolt; 140. Video detection unit; 141. Camera; 142. Lighting unit; 143. Fixing seat; 144. Bolt; 145. Nut; 146. Connecting rod; 200. Tunnel. DETAILED DESCRIPTION

[0026] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0028] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0029] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0030] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0031] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0032] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0033] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0034] After roads, bridges, tunnels, and houses are built and put into use, they need to be inspected regularly to detect potential safety hazards in advance and eliminate them, thereby avoiding the occurrence of danger. In particular, during the use of tunnels, due to their complex structure and environment, such as darkness, humidity, poor ventilation, etc., the probability of potential safety hazards is often much greater. In order to predict and eliminate these hidden dangers in advance, it is necessary to conduct inspections more frequently than other related building facilities. Therefore, in order to improve the efficiency of tunnel inspections, the embodiments of the present application propose a tunnel maintenance inspection device and system, through which the efficiency and intelligence level of tunnel maintenance inspections can be greatly improved, thereby saving manpower input and maintenance costs.

[0035] like Figure 1 FIG. 1 is a schematic diagram of the structure of a tunnel maintenance inspection device proposed in an embodiment of the present application. Figure 1In the present invention, the tunnel maintenance inspection device 100 includes: a base 110, a plurality of support rods 120 and a plurality of camera detection units 140; the base 110 includes a first base 111 and a second base 112, and the first base 111 and the second base 112 are respectively provided with pulleys 113 at the bottom, and the pulleys 113 are used to drive the bases to move; the plurality of support rods 120 are in an arc-shaped structure, and the plurality of support rods 120 are interconnected to form a circular arch support beam to adapt to the shape of the tunnel to be inspected, and the two ends of the support beam are respectively arranged on the first base 111 and the second base 112; the plurality of camera detection units 140 are arranged at intervals on the outside of the support beam, and are used to perform inspection operations on the tunnel 200 to be inspected.

[0036] like Figure 1 As shown, the tunnel maintenance inspection device 100 is in an overall arch shape to adapt to the shape of the tunnel 200. The base 110 is a fixed seat, and its purpose is to provide a fixing and forming function for the support beam so that the support beam can be firmly fixed for inspection of the tunnel. The base 110 can be in a variety of shapes, for example: it can be a cube with a certain weight, or a triangular structure with a support frame, etc., as long as it can support the support beam. The base 110 includes a first base 111 and a second base 112, which are respectively located on both sides of the support beam, and the two ends of the support beam are respectively arranged on the first base 111 and the second base 112. A pulley 113 is also provided at the bottom of the base 110, and the pulley 113 can drive the base to move freely, thereby driving the support beam to move freely in the tunnel, so as to facilitate inspection of various parts of the tunnel.

[0037] The support rod 120 is a hollow structure, and its length and shape can be set according to actual needs. It can be set as a rectangular hollow structure or a cylindrical hollow tube structure. In order to enable multiple support rods 120 to be connected to each other and spliced ​​into a support beam suitable for the shape of the tunnel, the support rod 120 is an arc structure. Figure 1 As shown, a plurality of first support rods 121 and second support rods 122 are spliced ​​together to form a support beam with an arched structure to match the shape of the tunnel to be inspected.

[0038] The camera detection unit 140 is mainly used to photograph and record the inner wall of the tunnel 200 for inspection by inspection personnel. The tunnel maintenance inspection device 100 includes a plurality of camera detection units 140, which are arranged at intervals on one side of the support beam formed by the support rod 120, and are used to photograph the inner wall of the tunnel at different positions. The spacing between the plurality of camera detection units 140 can be set as needed, so that the camera angles of all camera detection units 140 can cover the entire inner wall of the tunnel 200.

[0039] The tunnel maintenance inspection device provided in the embodiment of the present application forms a support beam adapted to the tunnel structure by freely splicing multiple support rods, and at the same time, multiple camera detection units are arranged at intervals on the support beam, and the support beam is arranged on a base. On the one hand, the multiple camera detection units can conveniently shoot and inspect various positions in the lateral direction of the inner wall of the tunnel. On the other hand, the support beam can be moved by the pulley at the bottom of the base, so that the camera detection unit can shoot and inspect various positions in the longitudinal direction of the tunnel, thereby realizing 360-degree inspection and shooting of the entire tunnel without dead angles. The tunnel maintenance inspection device proposed in the embodiment of the present application can realize all-round and full-coverage maintenance inspection in the tunnel, effectively improve the work efficiency of tunnel maintenance inspection, and enhance the safety of tunnel inspection. It can be freely spliced ​​according to the tunnel structure, can adapt to a variety of scenes, and can move freely, and autonomously shoot through the camera detection unit, which greatly improves the convenience of maintenance inspection, improves the efficiency of maintenance inspection, and also solves the manpower input and maintenance cost of maintenance inspection.

[0040] In order to further improve the efficiency of tunnel maintenance and inspection, the embodiment of the present application sets a controller (not shown) on the base 110, and sets a motor (not shown) for the pulley 113. The controller is electrically connected to the pulley for controlling the pulley to drive the base to slide.

[0041] Commonly used pulleys usually require manpower to move. In order to more conveniently inspect the tunnel 200, the embodiment of the present application provides a motor for the pulley 113, and the motor is controlled by a controller. The motor can automatically drive the support beam to move under the control of the controller. The support beam can be moved without the help of manpower, which greatly saves labor costs.

[0042] In order to improve the usability of the tunnel maintenance and inspection device, the embodiment of the present application configures the interior of the support rod 120 as a hollow cylindrical structure, and one end of the support rod 120 is retracted inward to form a plug-in portion for plugging and fixing with the other end of another support rod.

[0043] Since the sizes of different tunnels are different, if the support beam is set to a non-adjustable structure, the adaptability of the tunnel maintenance inspection device will be greatly reduced. Therefore, the embodiment of the present application sets it to a splicable structure, which requires the tunnel maintenance inspection device to be spliced ​​in advance by assembly. By setting the support rod 120 as a standard part, that is, one end shrinks inward to form a plug-in part, and the other end has a normal inner diameter, that is, one end has a large inner diameter and the other end has a small inner diameter, and the end with a small inner diameter forms a plug-in part that can be plugged into the end with a large inner diameter, it is very convenient to splice and the operation is also very simple.

[0044] In another embodiment, in order to improve the connection strength between different support rods 120, the device also includes a support rod fixing assembly 130; the support rod fixing assembly 130 includes a connecting block 131 and a plurality of fixing bolts 132; a plurality of fixing holes are arranged on the connecting block 131; a first through hole 1211 is arranged on the side surface of one end of the support rod 120; the fixing holes on the connecting block 131 are respectively arranged corresponding to the first through holes 1211 on the adjacent support rods 120 to be connected, and the plurality of fixing bolts 132 respectively penetrate the first through holes 1211 and the fixing holes, so as to fix the adjacent support rods 120 to be connected through the connecting block 131.

[0045] like Figure 1 As shown, the support rod fixing assembly 130 is arranged between the first support rod 121 and the second support rod 122, and is used to fix the first support rod 121 and the second support rod 122 in connection, and the connecting block 131 is used to connect with the ports of the first support rod 121 and the second support rod 122 respectively, and a plurality of fixing holes (not shown) are arranged on the connecting block 131, and the connecting block 131 can be in various forms. If the support rod is a rectangular hollow structure, the connecting block can be a rectangular hollow structure, and its inner diameter is larger than the inner diameter of the support rod, and one end of the support rod can be sleeved into it; if the support rod is a cylindrical hollow structure, the connecting block 131 can be a cylindrical hollow structure; of course, the connecting block 131 can also be a plate-like structure, as long as the support rods can be connected to each other, it is not limited in the present application.

[0046] A plurality of first through holes 1211 are also provided at the ends of the first support rod 121 and the second support rod 122. Figure 2 As shown, the first through holes 1211 are respectively provided at both ends of the support rod 120. When the first support rod 121 and the second support rod 122 need to be fixedly connected, the connecting block 131 is sleeved on both ends of the first support rod 121 and the second support rod 122 so that the fixing holes thereof correspond to the first through holes respectively, and the connecting block 131 is respectively fixed to the first support rod 121 and the second support rod 122 by the fixing bolt 132. Similarly, in the same way, other support rods are connected to each other to form the required support beam.

[0047] In some embodiments, in order to conveniently fix the camera detection unit 140, as shown in FIG. Figure 2 As shown, a plurality of second through holes 1212 are provided on the side surface of one end of the support rod 120 adjacent to the first through hole 1211 ; and a plurality of the camera detection units 140 are provided on the support rod 120 through the second through holes 1212 .

[0048] Since the location of the camera detection unit 140 may vary depending on the shape of the tunnel, in the embodiment of the present application, the spacing between the second through holes 1212 can be freely set, and when the location of the camera detection unit 140 needs to be moved, it is only necessary to set the camera detection unit 140 on different second through holes 1212. The camera detection unit 140 and the support rod 120 can be fixed by bolts or by elastic clips, as long as the camera detection unit 140 can be fixed on the support rod 120.

[0049] In order to better carry out maintenance inspection of the tunnel, Figure 2 and Figure 3 As shown, in the embodiment of the present application, the video detection unit 140 includes a fixing seat 143, a connecting rod 146 and a camera 141; the fixing seat 143 is fixed to the support rod 120 through a plurality of the second through holes 1212; one end of the connecting rod 146 is connected to the fixing seat 143, and the other end is connected to the camera 141, and the connecting rod 146 is used to fix the position of the camera 141; the camera 141 is used to inspect the tunnel to be inspected.

[0050] like Figure 3 As shown, the video detection unit 140 includes a fixing seat 143, a connecting rod 146 and a camera 141, the connecting rod 146 connects the fixing seat 143 and the camera 141 respectively, and the fixing seat 143 passes through the second through hole 1212 and the fixing seat 143 through a bolt 144 and a nut 145 to fix the fixing seat 143 on the support rod 120.

[0051] The connecting rod 146 can be fixedly connected to the fixing seat 143 and the camera 141, that is, the position of the camera 141 cannot be adjusted, or the camera 141 can be movably connected to the connecting rod 146, that is, the angle and position of the camera 141 relative to the fixing seat 143 are adjustable.

[0052] In some embodiments, one end of the connecting rod 146 is movably connected to the fixing seat 143, and the other end of the connecting rod 146 is movably connected to the camera 141. The connecting rod 146 is used to adjust and fix the position of the camera 141 through interference fit with the fixing seat 143 and the camera 141.

[0053] The interference fit may be implemented in a variety of ways, such as a spherical connection or a toothed connection. When the camera position or angle of the camera 141 needs to be adjusted, the camera 141 only needs to be gently twisted to adjust it.

[0054] In order to improve the effect of tunnel maintenance inspection, in some embodiments, the device further includes a lighting unit 142, and the lighting unit 142 is arranged adjacent to the camera 141. The lighting unit 142 and the camera 141 can use the same power supply, and when the camera 141 starts shooting, the lighting unit 142 provides it with a lighting source to improve the clarity of the shooting.

[0055] In order to improve the automation of tunnel maintenance inspection, in some embodiments, the camera 141 and the lighting unit 142 are electrically connected to the controller respectively; the controller is used to control the camera 141 and the lighting unit 142. The controller can provide an interface to the outside to connect with external devices, such as computers, mobile phones, etc., and smart terminals such as computers and mobile phones can operate and control the tunnel maintenance inspection device through the controller.

[0056] To sum up, the tunnel maintenance and inspection device proposed in the embodiment of the present application can be freely spliced ​​according to the tunnel structure, can adapt to a variety of scenes, and can move freely, and autonomously shoot through the camera detection unit, which greatly improves the convenience of maintenance and inspection, improves the efficiency of maintenance and inspection, and also solves the manpower investment and maintenance cost of maintenance and inspection.

[0057] In some embodiments, a tunnel maintenance and inspection system is also proposed, including an inspection terminal and the tunnel maintenance and inspection device proposed in the above embodiments; the inspection terminal is used to communicate with the tunnel maintenance and inspection device, and is used to perform inspection operations on the tunnel to be inspected through the tunnel maintenance and inspection device.

[0058] The inspection terminal can be a mobile phone or a computer, etc. The inspection terminal can send instructions to the tunnel maintenance inspection device to control it to move freely, and can also control the camera detection unit to take pictures of different positions in the tunnel. It can clearly observe the internal situation of the tunnel in all directions, and transmit the real-time detection pictures to a laptop computer for analysis, so as to directly perform fine detection of structural defects such as concrete cracking, falling blocks, water leakage, etc. in the tunnel.

[0059] The tunnel maintenance inspection system proposed in the embodiment of the present application can be freely spliced ​​according to the tunnel structure, can adapt to a variety of scenes, and can move freely, and can autonomously shoot through the camera detection unit, which greatly improves the convenience of maintenance inspection, solves the manpower investment and maintenance cost of maintenance inspection, and can also realize all-round and full-coverage maintenance inspection in the tunnel, which can effectively improve the work efficiency of tunnel maintenance inspection and enhance the safety of tunnel inspection.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A tunnel maintenance inspection device, characterized in that: include: A base, a plurality of support rods and a plurality of camera detection units; The base comprises a first base and a second base, and pulleys are respectively provided at the bottom of the first base and the second base, and the pulleys are used to drive the base to move; The plurality of support rods are in an arc-shaped structure, and the plurality of support rods are connected to each other to form a circular arch support beam to adapt to the shape of the tunnel to be inspected, and the two ends of the support beam are respectively arranged on the first base and the second base; A plurality of the camera detection units are arranged at intervals outside the support beam for inspecting the tunnel to be inspected.

2. The tunnel maintenance inspection device according to claim 1, characterized in that: The base includes a controller; the pulley includes a motor; The controller is electrically connected to the motor of the pulley and is used to control the motor to drive the pulley to drive the base to move.

3. The tunnel maintenance inspection device according to claim 1, characterized in that: The support rod is an internal hollow cylindrical structure, and one end of the support rod is contracted inwardly to form a plug-in portion for being plugged and fixed with the other end of another support rod.

4. The tunnel maintenance inspection device according to claim 2, characterized in that: The device also includes a support rod fixing assembly; The support rod fixing assembly comprises a connecting block and a plurality of fixing bolts; the connecting block is provided with a plurality of fixing holes; A first through hole is provided on the side surface of one end of the support rod; The fixing holes on the connecting block are respectively arranged corresponding to the first through holes on the adjacent supporting rods to be connected, and the plurality of fixing bolts respectively penetrate the first through holes and the fixing holes, so as to fix the adjacent supporting rods to be connected through the connecting block.

5. The tunnel maintenance inspection device according to claim 4, characterized in that: A plurality of second through holes are arranged on the side surface of one end of the support rod adjacent to the first through hole; A plurality of the camera detection units are arranged on the support rod through the second through hole.

6. The tunnel maintenance inspection device according to claim 5, characterized in that: The camera detection unit includes a fixing seat, a connecting rod and a camera; The fixing seat is fixedly arranged with the supporting rod through a plurality of the second through holes; One end of the connecting rod is connected to the fixing seat, and the other end is connected to the camera, and the connecting rod is used to fix the position of the camera; The camera is used to inspect the tunnel to be inspected.

7. The tunnel maintenance inspection device according to claim 6, characterized in that: One end of the connecting rod is movably connected to the fixing seat, and the other end of the connecting rod is movably connected to the camera. The connecting rod is used to adjust and fix the position of the camera through interference fit with the fixing seat and the camera.

8. The tunnel maintenance inspection device according to claim 7, characterized in that: The device further comprises a lighting unit, and the lighting unit is arranged adjacent to the camera.

9. The tunnel maintenance inspection device according to claim 8, characterized in that: The camera and the lighting unit are electrically connected to the controller respectively; The controller is used to control the camera and the lighting unit.

10. A tunnel maintenance inspection system, characterized in that: It comprises an inspection terminal and a tunnel maintenance inspection device as claimed in any one of claims 1 to 9; The inspection terminal is used to communicate with the tunnel maintenance inspection device and to perform inspection operations on the tunnel to be inspected through the tunnel maintenance inspection device.

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