Subway tunnel disease intelligent detection equipment and detection method thereof

Abstract

The invention provides subway tunnel disease intelligent detection equipment and a detection method thereof, the subway tunnel disease intelligent detection equipment comprises a moving assembly, the moving assembly comprises a moving platform, track wheels and a mounting groove, the track wheels are rotatably connected to the two ends of the two sides of the moving platform respectively, and the mounting groove is formed in the bottom of the moving platform. According to the intelligent detection equipment for the subway tunnel diseases and the detection method thereof, through the arrangement of the protective cover, after the equipment is used, the detection assembly can be covered, in the equipment transportation and storage process, the protective cover can block external dust and sundries and prevent the dust and the sundries from entering the detection assembly, and the detection efficiency is improved. The protective cover is arranged on the detection assembly, pollution to the detection head, the lighting piece and other parts and influence on detection precision are avoided, and meanwhile, when accidental collision occurs, the protective cover can play a buffering role, reduce impact force borne by the detection assembly, protect the structural integrity of the detection assembly and prolong the service life of the detection assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of subway tunnel detection, and particularly to an intelligent detection device for subway tunnel diseases and a detection method thereof. Background Art

[0002] With the rapid development of urban rail transit, subway tunnels, as important infrastructure for urban underground transportation, their safety conditions are directly related to the safety and reliability of subway operations. During long-term use, subway tunnels are affected by various factors such as changes in geological conditions, train vibrations, and groundwater erosion, resulting in diseases such as cracks, water leakage, and lining spalling. If these diseases cannot be detected and treated in a timely manner, it may lead to the instability of the tunnel structure and endanger the safety of train operation.

[0003] To avoid such situations, detection equipment is used to regularly detect the tunnels. However, after the existing detection equipment is used, it is directly exposed to the outside, which is likely to cause damage to the detection components. The detection components are usually relatively precise, and long-term exposure will be eroded by dust and water, easily leading to failures such as blurred optical components and short circuits of electronic components, shortening the service life of the equipment and increasing the maintenance cost. Moreover, during transportation and storage, the unprotected detection components may also be damaged due to accidental collisions, affecting the normal development of detection work.

[0004] Therefore, it is necessary to provide an intelligent detection device for subway tunnel diseases and a detection method thereof to solve the above technical problems. Summary of the Invention

[0005] The present invention provides an intelligent detection device for subway tunnel diseases and a detection method thereof, which solves the problem that the detection components of the existing subway tunnel detection equipment are directly exposed after use, are easily eroded by dust and water, and are accidentally collided, resulting in shortened service life of the equipment, increased maintenance cost, and affecting the normal development of detection work.

[0006] To solve the above technical problems, an intelligent detection device for subway tunnel diseases provided by the present invention includes:

[0007] A moving component, the moving component includes a moving platform, track wheels, and mounting grooves. The track wheels are respectively rotatably connected to both ends of the two sides of the moving platform, and the mounting grooves are opened at the bottom of the moving platform;

[0008] A connecting component, the connecting component is arranged at one end of the moving component;

[0009] A detection component, the detection component is arranged on the top of the moving component;

[0010] Sliding rails are respectively and fixedly installed on both sides of the top of the moving platform. A chute is provided on the side surface of the sliding rail, and a slider is slidably connected to the inner side surface of the chute;

[0011] Protective covers are respectively arranged at both ends of the top of the moving platform, and the protective covers and the sliders are fixedly installed;

[0012] An electrical cabinet is fixedly installed on the top of the top of the moving platform;

[0013] A driving motor is fixedly installed on the inner side surface of the installation groove. A bidirectional threaded rod is fixedly installed at the output end of the driving motor. Moving plates are respectively threadedly connected to both ends of the outer side surface of the bidirectional threaded rod. Moving rods are fixedly installed at both ends of one side of the moving plate. A moving frame is fixedly installed at one end of the moving rod, and the moving frame and the protective cover are fixedly installed.

[0014] Preferably, the connection component includes a connection frame and a bolt. The connection frame is fixedly installed at one end of the moving platform, and the bolt is slidably connected to the inside of the connection frame.

[0015] Preferably, the detection component includes a support member, a detection head, and a lighting member. The support member is fixedly installed on the top of the moving platform, and the detection head and the lighting member are both fixedly installed on the side surface of the support member.

[0016] Preferably, a rubber strip is fixedly installed at the edge of the top of one of the protective covers.

[0017] Preferably, a door body is rotatably connected to the front surface of the electrical cabinet, and a human-computer interaction device and a distribution box are fixedly installed on the inner side surface of the electrical cabinet.

[0018] Preferably, the moving rod is slidably connected to the inside of the moving platform, and both ends of the moving plate are respectively slidably connected to both sides of the inner side surface of the installation groove.

[0019] Preferably, grooves are respectively provided on both sides of the bottom of the moving platform, and a limiting component is arranged on the inner side surface of the groove.

[0020] Preferably, the limiting component includes a rotating tube, a lead screw, a fixed sleeve, a rubber pad, a limiting groove, and a limiting block. The lead screws are respectively threadedly connected to both ends of the inner side surface of the rotating tube. The fixed sleeve is slidably connected to the outer side surface of the lead screw. The fixed sleeve is fixedly installed inside the moving platform. The rubber pad is fixedly installed at one end of the lead screw, and the rubber pad is arranged on the side surface of the track wheel.

[0021] Preferably, the limiting grooves are respectively formed on both sides of the lead screw, the limiting blocks are slidably connected to the inner sides of the limiting grooves, and the limiting blocks are fixedly installed on the inner sides of the fixed sleeves.

[0022] To solve the above problems, the present invention also provides a detection method for an intelligent detection device for subway tunnel diseases, which is characterized by including the following steps:

[0023] S1. When it is necessary to detect subway tunnel diseases, move the moving component to the subway track, and then connect the detection device and the driving head through the connecting component;

[0024] S2. During subsequent detection, start the driving motor to drive the bidirectional lead screw to rotate. Since both ends of the outer side of the bidirectional lead screw are threadedly connected with moving plates, when the bidirectional lead screw rotates, the two moving plates move towards both ends respectively. Both ends of one side of the moving plate are fixedly installed with moving rods, so the moving rods will move along with the moving plates. One end of the moving rod is fixedly installed with a moving frame, and thus the moving frame will be driven to move. The moving frame and the protective cover are fixedly installed, and finally the two protective covers move towards both ends respectively, so as to expose the detection components located in the two protective covers;

[0025] S3. Then, detect diseases in the tunnel such as cracks and water seepage through the detection head. The lighting component provides lighting during the detection to ensure that the detection head can clearly obtain the image information of the tunnel wall. The detection head includes an image acquisition module, a laser ranging module, a sensor module, and a signal processing unit. The image acquisition module consists of a high-resolution industrial camera and is responsible for collecting the surface image of the tunnel wall; the laser ranging module measures the distance between the detection head and the tunnel wall by emitting and receiving laser beams; the sensor module includes an infrared temperature sensor, a strain sensor, etc., and is used to detect data such as the temperature and strain of the tunnel wall; the signal processing unit consists of a high-performance processor and related circuits, and processes and analyzes the data collected by each module. During detection, the laser ranging module first measures the distance and transmits the data to the signal processing unit. The image acquisition module adjusts the focal length and exposure parameters according to this distance for image acquisition; the sensor module continuously collects data such as temperature and strain and transmits them to the signal processing unit. The signal processing unit integrates the data of each module for comprehensive analysis. On the one hand, it transmits the processing result to the human-machine interaction device in the electrical cabinet, and on the other hand, it generates a feedback control signal according to the result to adjust the working state of the detection head;

[0026] S4. When detecting cracks, the image collected by the image acquisition module is processed by the signal processing unit using an edge detection algorithm to extract edge information. Combining the distance data from the laser ranging module, the length, width, and depth of the crack are calculated. Additionally, deep learning algorithms can be used to identify the type of crack. When detecting water leakage, the infrared temperature sensor detects the temperature distribution of the tunnel wall, and the signal processing unit determines the location and severity of the water leakage based on temperature anomalies combined with image information. When detecting lining spalling, the laser ranging module monitors the distance change, and the signal processing unit determines the situation of lining spalling based on the change in distance data.

[0027] S5. After the detection is completed, the drive motor is started again to reverse, driving the bidirectional threaded rod to rotate in the opposite direction, causing the two moving plates to move towards each other, and then driving the protective cover to move, covering and protecting the detection component again.

[0028] S6. Disconnect the detection device from the driving head through the connection component, and move the moving component away from the subway track to complete the entire detection process.

[0029] Compared with related technologies, an intelligent detection device for subway tunnel diseases and its detection method provided by the present invention have the following beneficial effects:

[0030] The present invention provides an intelligent detection device for subway tunnel diseases and its detection method. Through the setting of the protective cover, after the device is used, the detection component can be covered. During the transportation and storage of the device, the protective cover can block external dust and debris, preventing them from entering the interior of the detection component, avoiding contamination of components such as the detection head and lighting parts, which may affect the detection accuracy. At the same time, in case of accidental collision, the protective cover can play a buffering role, reducing the impact force on the detection component, protecting the structural integrity of the detection component, and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic structural diagram of the first embodiment of an intelligent detection device for subway tunnel diseases provided by the present invention;

[0032] Figure 2 It is Figure 1 a schematic structural diagram of another perspective shown;

[0033] Figure 3 It is Figure 2 a schematic structural diagram of another perspective shown;

[0034] Figure 4 It is Figure 1 a schematic internal structure diagram of the electrical cabinet shown;

[0035] Figure 5 It is Figure 2 a schematic enlarged view of part A shown;

[0036] Figure 6 A schematic diagram of the structure of a second embodiment of an intelligent detection device for subway tunnel defects provided by the present invention;

[0037] Figure 7 for Figure 6 The schematic diagram of the cross-sectional structure of the limiting component is shown.

[0038] Numbers in the figure: 1. Moving component, 11. Moving platform, 12. Track wheel, 13. Mounting groove, 2. Connecting component, 21. Connecting frame, 22. Latch, 3. Detection component, 31. Support, 32. Detection head, 33. Lighting component, 4. Slide rail, 41. Slide groove, 42. Slider, 5. Protective cover, 51. Rubber strip, 6. Electrical cabinet, 61. Door body, 62. Human-computer interaction equipment, 63. Distribution box, 7. Drive motor, 71. Bidirectional threaded rod, 72. Moving plate, 73. Moving rod, 74. Moving frame, 8. Groove, 9. Limiting component, 91. Rotating tube, 92. Screw rod, 93. Fixed sleeve, 94. Rubber pad, 95. Limiting groove, 96. Limiting block. DETAILED DESCRIPTION

[0039] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0040] First embodiment

[0041] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 A schematic structural diagram of a first embodiment of an intelligent subway tunnel disease detection device provided by the present invention; Figure 2 for Figure 1 Another perspective structural schematic diagram shown; Figure 3 for Figure 2 Another perspective structural schematic diagram shown; Figure 4 for Figure 1 The schematic diagram of the internal structure of the electrical cabinet shown; Figure 5 for Figure 2 A schematic diagram of the enlarged portion A is shown. A subway tunnel disease intelligent detection device comprises: a mobile component 1, the mobile component 1 comprises a mobile platform 11, a track wheel 12 and a mounting groove 13, the track wheel 12 is rotatably connected to both ends of the mobile platform 1, and the mounting groove 13 is provided at the bottom of the mobile platform 11;

[0042] A connecting component 2, wherein the connecting component 2 is arranged at one end of the moving component 1;

[0043] A detection component 3, wherein the detection component 3 is arranged on the top of the moving component 1;

[0044] The slide rails 4 are respectively and fixedly installed on both sides of the top of the moving platform 11. A chute 41 is formed on the side surface of the slide rail 4, and a slider 42 is slidably connected to the inner side surface of the chute 41;

[0045] The protective covers 5 are respectively arranged at both ends of the top of the moving platform 11, and the protective covers 5 and the sliders 42 are fixedly installed;

[0046] The electrical cabinet 6 is fixedly installed on the top of the moving platform 11;

[0047] The driving motor 7 is fixedly installed on the inner side surface of the installation groove 13. A bidirectional threaded rod 71 is fixedly installed at the output end of the driving motor 7. Both ends of the outer side surface of the bidirectional threaded rod 71 are threadedly connected with moving plates 72. Both ends of one side of the moving plate 72 are fixedly installed with moving rods 73. One end of the moving rod 73 is fixedly installed with a moving bracket 74, and the moving bracket 74 and the protective cover 5 are fixedly installed.

[0048] The connection assembly 2 includes a connection bracket 21 and a bolt 22. The connection bracket 21 is fixedly installed at one end of the moving platform 11, and the bolt 22 is slidably connected inside the connection bracket 21.

[0049] During use, align the connection bracket 21 with the connection part of the driving headstock, insert the bolt 22, and the stable connection between the detection device and the driving headstock can be realized, which is convenient for the device to move on the subway track.

[0050] The detection assembly 3 includes a support member 31, a detection head 32 and a lighting member 33. The support member 31 is fixedly installed on the top of the moving platform 11, and the detection head 32 and the lighting member 33 are both fixedly installed on the side surface of the support member 31.

[0051] The support member 31 plays a role in stably supporting the detection head 32 and the lighting member 33, ensuring the stable positions of the two during the detection process and guaranteeing the detection accuracy.

[0052] A rubber strip 51 is fixedly installed at the edge of the top of one of the protective covers 5.

[0053] When the two protective covers 5 are closed, the rubber strip 51 can block the gap between the two protective covers 5, further blocking dust, water vapor, etc. from entering and improving the protection effect.

[0054] A door body 61 is rotatably connected to the front surface of the electrical cabinet 6. A human-computer interaction device 62 and a distribution box 63 are fixedly installed on the inner side surface of the electrical cabinet 61.

[0055] Open the door body 61 to facilitate the operation of the human-computer interaction device 62 by the staff, view the detection data, adjust the detection parameters, etc.; the distribution box 63 provides power support for the entire device to ensure the normal operation of each component of the device.

[0056] The moving rod 73 is slidably connected to the inside of the moving platform 11, and both ends of the moving plate 72 are respectively slidably connected to both sides of the inner side of the installation groove 13.

[0057] This sliding connection method ensures the stability of the moving plate 72 and the moving rod 73 during the moving process, enabling the protective cover 5 to be opened and closed smoothly.

[0058] The working principle of an intelligent subway tunnel disease detection device provided by the present invention is as follows:

[0059] Before detection, first place the moving component 1 on the subway track through the track wheels 12, and connect the detection device to the driving locomotive using the connecting frame 21 and the pin 22 of the connecting component 2; during detection, start the driving motor 7, and the driving motor 7 drives the bidirectional threaded rod 71 to rotate. Since the thread directions at both ends of the bidirectional threaded rod 71 are opposite and are respectively threadedly connected to the moving plates 72, when the bidirectional threaded rod 71 rotates, the two moving plates 72 will move towards both ends along the inner side of the installation groove 13 respectively; the moving plates 72 drive the moving rods 73 to move, and the moving rods 73 drive the moving frames 74 to move, so that the two protective covers 5 fixedly installed on the moving frames 74 slide open towards both ends along the sliding grooves 41 on the sliding rails 4 respectively, exposing the detection component 3; at this time, the lighting member 33 is turned on to provide lighting, and each module of the detection head 32 starts to work to detect the tunnel diseases. After the detection is completed, start the driving motor 7 again and make it reverse, the bidirectional threaded rod 71 rotates in the reverse direction, driving the two moving plates 72 to move towards each other, and finally closing the protective cover 5 to shield and protect the detection component 3.

[0060] Compared with the related technology, an intelligent subway tunnel disease detection device provided by the present invention has the following beneficial effects:

[0061] Through the setting of the protective cover 5, after the device is used, the detection component 3 can be covered. During the transportation and storage of the device, the protective cover 5 can block external dust and sundries, prevent them from entering the inside of the detection component 3, avoid contaminating components such as the detection head 32 and the lighting member 33, and affecting the detection accuracy. At the same time, in case of accidental collision, the protective cover 5 can play a buffering role, reduce the impact force received by the detection component 3, protect the structural integrity of the detection component 3, and extend its service life.

[0062] Second Embodiment

[0063] Please refer to Figure 6 and Figure 7, based on an intelligent detection device for subway tunnel diseases and its detection method provided by the first embodiment of the present application, the second embodiment of the present application proposes another intelligent detection device for subway tunnel diseases and its detection method. The second embodiment is only the preferred way of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0064] Specifically, the difference of an intelligent detection device for subway tunnel diseases provided by the second embodiment of the present application is that for an intelligent detection device for subway tunnel diseases, grooves 8 are respectively opened on both sides of the bottom of the moving platform 11, and a limiting component 9 is arranged on the inner side surface of the groove 8.

[0065] The limiting component 9 includes a rotating tube 91, a lead screw 92, a fixed sleeve 93, a rubber pad 94, a limiting groove 95 and a limiting block 96. The lead screws 92 are respectively threadedly connected to both ends of the inner side surface of the rotating tube 91. The fixed sleeve 93 is slidably connected to the outer side surface of the lead screw 92. The fixed sleeve 93 is fixedly installed inside the moving platform 11. The rubber pad 94 is fixedly installed at one end of the lead screw 92. The rubber pad 94 is arranged on the side surface of the track wheel 12.

[0066] The limiting grooves 95 are respectively opened on both sides of the lead screw 92. The limiting blocks 96 are slidably connected to the inner side surface of the limiting grooves 95. The limiting blocks 96 are fixedly installed on the inner side surface of the fixed sleeve 93.

[0067] The working principle of an intelligent detection device for subway tunnel diseases provided by the present invention is as follows:

[0068] When in use, when it is necessary to limit the detection device to prevent it from moving, the user can rotate the two rotating tubes 91 at the bottom of the moving platform 11, so that the rotating tubes 91 are threadedly connected to the outer side surface of the lead screw 92, so that the lead screw 92 moves out from the inner side surface of the rotating tube 91, so that the lead screw 92 slides inside the fixed sleeve 93, and then one end of the lead screw 92 drives the rubber pad 94 to move towards one side of the track wheel 12, so that the rubber pad 94 abuts against the track wheel 12, playing a role in limiting the track wheel 12.

[0069] Compared with the related technology, an intelligent detection device for subway tunnel diseases provided by the present invention has the following beneficial effects:

[0070] Through the cooperation of structures such as the rotating tube 91, the lead screw 92, the fixed sleeve 93, the rubber pad 94, the limiting groove 95 and the limiting block 96, when in use, the rotating tube 91 can be threadedly connected to the outer side surface of the lead screw 92, and then one end of the lead screw 92 drives the rubber pad 94 to abut against the track wheel 12, so that the detection device can be limited, avoiding movement during placement.

[0071] To solve the above problems, the present invention also provides a detection method for an intelligent detection device for subway tunnel diseases, which is characterized by including the following steps:

[0072] S1. When it is necessary to detect subway tunnel diseases, move the moving component 1 onto the subway track, and then connect the detection device and the driving head through the connecting component 2;

[0073] S2. During subsequent detection, start the driving motor 7 to drive the bidirectional threaded rod 71 to rotate. Since both ends of the outer side of the bidirectional threaded rod 71 are threadedly connected with the moving plates 72, when the bidirectional threaded rod 71 rotates, the two moving plates 72 move towards both ends respectively. Both ends of one side of the moving plate 72 are fixedly installed with moving rods 73, so the moving rods 73 will move along with the moving plates 72. One end of the moving rod 73 is fixedly installed with a moving frame 74, and thus the moving frame 74 will be driven to move. The moving frame 74 and the protective cover 5 are fixedly installed, and finally the two protective covers 5 move towards both ends respectively, thereby exposing the detection components 3 located inside the two protective covers 5;

[0074] S3. Then, detect diseases in the tunnel such as cracks and water leakage through the detection head 32. The lighting component 33 provides lighting during the detection process to ensure that the detection head 32 can clearly obtain the image information of the tunnel wall. The detection head 32 includes an image acquisition module, a laser ranging module, a sensor module, and a signal processing unit. The image acquisition module consists of a high-resolution industrial camera and is responsible for collecting the surface image of the tunnel wall; the laser ranging module measures the distance between the detection head and the tunnel wall by emitting and receiving laser beams; the sensor module includes an infrared temperature sensor, a strain sensor, etc., and is used to detect data such as the temperature and strain of the tunnel wall; the signal processing unit is composed of a high-performance processor and related circuits and processes and analyzes the data collected by each module. During detection, the laser ranging module first measures the distance and transmits the data to the signal processing unit. The image acquisition module adjusts the focal length and exposure parameters according to this distance for image acquisition; the sensor module continuously collects data such as temperature and strain and transmits them to the signal processing unit. The signal processing unit integrates the data of each module for comprehensive analysis. On the one hand, it transmits the processing result to the human-computer interaction device 62 in the electrical cabinet 6, and on the other hand, it generates a feedback control signal according to the result to adjust the working state of the detection head 32;

[0075] S4. When detecting cracks, the image collected by the image acquisition module is processed by the signal processing unit using an edge detection algorithm to extract edge information. Combining with the distance data of the laser ranging module, the length, width and depth of the cracks are calculated, and the crack type can also be identified using a deep learning algorithm; when detecting water leakage, the infrared temperature sensor detects the temperature distribution of the tunnel wall, and the signal processing unit judges the location and severity of water leakage based on temperature anomalies combined with image information; when detecting lining spalling, the laser ranging module monitors the distance change, and the signal processing unit judges the lining spalling situation based on the change of distance data;

[0076] S5. After the detection is completed, the drive motor 7 is started again to rotate in reverse, driving the bidirectional threaded rod 71 to rotate in the reverse direction, causing the two moving plates 72 to move towards each other, and then driving the protective cover 5 to move, covering and protecting the detection component 3 again;

[0077] S6. Disconnect the detection device from the driving head through the connection component 2, and move the moving component 1 away from the subway track to complete the entire detection process.

[0078] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. An intelligent detection device for subway tunnel defects, characterized in that: include: A mobile assembly, the mobile assembly comprising a mobile platform, a track wheel and a mounting groove, the track wheel being rotatably connected to two ends of both sides of the mobile platform, and the mounting groove being opened at the bottom of the mobile platform; A connecting component, the connecting component is arranged at one end of the moving component; A detection component, wherein the detection component is arranged on the top of the moving component; Slide rails, the slide rails are respectively fixedly mounted on both sides of the top of the mobile platform, the sides of the slide rails are provided with slide grooves, and the inner side surfaces of the slide grooves are slidably connected with sliders; Protective covers, which are respectively arranged at two ends of the top of the mobile platform, and the protective covers and the sliding block are fixedly installed; An electrical cabinet, the electrical cabinet being fixedly mounted on the top of the top of the mobile platform; A driving motor, wherein the driving motor is fixedly mounted on the inner side surface of the mounting groove, a bidirectional threaded rod is fixedly mounted on the output end of the driving motor, both ends of the outer side surface of the bidirectional threaded rod are threadedly connected to a moving plate, both ends of one side of the moving plate are fixedly mounted with a moving rod, one end of the moving rod is fixedly mounted with a moving frame, and the moving frame and the protective cover are fixedly mounted.

2. The intelligent detection device for subway tunnel defects according to claim 1 is characterized in that: The connecting assembly comprises a connecting frame and a latch, wherein the connecting frame is fixedly mounted on one end of the mobile platform, and the latch is slidably connected to the interior of the connecting frame.

3. The intelligent subway tunnel disease detection device according to claim 1 is characterized in that: The detection assembly comprises a support member, a detection head and an illumination member. The support member is fixedly mounted on the top of the mobile platform, and the detection head and the illumination member are both fixedly mounted on the side of the support member.

4. The intelligent subway tunnel disease detection device according to claim 1 is characterized in that: A rubber strip is fixedly installed at the edge of the top of the protective cover.

5. The intelligent subway tunnel disease detection device according to claim 1 is characterized in that: The front side of the electrical cabinet is rotatably connected with a door body, and the inner side of the electrical cabinet is fixedly installed with a human-machine interaction device and a distribution box.

6. The intelligent subway tunnel disease detection device according to claim 1 is characterized in that: The moving rod is slidably connected to the inside of the moving platform, and the two ends of the moving plate are slidably connected to the two sides of the inner side surface of the installation groove respectively.

7. The intelligent subway tunnel disease detection device according to claim 1 is characterized in that: Grooves are provided on both sides of the bottom of the mobile platform, and limit components are provided on the inner sides of the grooves.

8. The intelligent subway tunnel disease detection device according to claim 1 is characterized in that: The limiting assembly includes a rotating tube, a screw rod, a fixed sleeve, a rubber pad, a limiting groove and a limiting block, the screw rod is respectively threadedly connected to the two ends of the inner side of the rotating tube, the fixed sleeve is slidably connected to the outer side of the screw rod, the fixed sleeve is fixedly installed inside the mobile platform, the rubber pad is fixedly installed at one end of the screw rod, and the rubber pad is arranged on the side of the track wheel.

9. The intelligent subway tunnel disease detection device according to claim 1 is characterized in that: The limiting grooves are respectively arranged on both sides of the screw rod, the limiting blocks are slidably connected to the inner side surfaces of the limiting grooves, and the limiting blocks are fixedly installed on the inner side surface of the fixing sleeve.

10. A detection method for the intelligent detection device for subway tunnel defects according to claims 1-9, characterized in that: The following steps are involved: S1. When it is necessary to inspect the subway tunnel for defects, the mobile assembly is moved to the subway track, and then the inspection equipment and the driving locomotive are connected through the connecting assembly; S2. When performing subsequent inspections, start the driving motor to drive the bidirectional threaded rod to rotate. Since both ends of the outer side of the bidirectional threaded rod are threadedly connected with moving plates, when the bidirectional threaded rod rotates, the two moving plates move to both ends respectively. Both ends of one side of the moving plate are fixedly installed with moving rods, so the moving rod will move with the moving plate. A moving frame is fixedly installed at one end of the moving rod, and then the moving frame will be driven to move. The moving frame and the protective cover are fixedly installed, and finally the two protective covers are moved to both ends respectively, so that the detection components in the two protective covers are exposed; S3. Then, the detection head is used to detect defects such as cracks and water leakage in the tunnel. The lighting component provides lighting during the detection process to ensure that the detection head can clearly obtain the image information of the tunnel wall. The detection head includes an image acquisition module, a laser ranging module, a sensor module and a signal processing unit. The image acquisition module is composed of a high-resolution industrial camera and is responsible for collecting the surface image of the tunnel wall; the laser ranging module measures the distance between the detection head and the tunnel wall by emitting and receiving laser beams; the sensor module includes an infrared temperature sensor and a strain sensor, etc., which are used to detect data such as the temperature and strain of the tunnel wall; the signal processing unit is composed of a high-performance processor and related circuits, and processes and analyzes the data collected by each module; during detection, the laser ranging module first measures the distance and transmits the data to the signal processing unit, and the image acquisition module adjusts the focal length and exposure parameters according to the distance to collect images; the sensor module collects temperature, strain and other data in real time and transmits it to the signal processing unit, and the signal processing unit integrates the data of each module for comprehensive analysis, on the one hand, transmits the processing results to the human-computer interaction device in the electrical cabinet, and on the other hand, generates feedback control signals according to the results to adjust the working state of the detection head; S4. When detecting cracks, the image collected by the image acquisition module is extracted edge information by the signal processing unit using the edge detection algorithm, and the length, width and depth of the crack are calculated by combining the distance data of the laser ranging module. The deep learning algorithm can also be used to identify the type of crack; when detecting water leakage, the infrared temperature sensor detects the temperature distribution of the tunnel wall, and the signal processing unit determines the location and severity of the water leakage based on the temperature anomaly and the image information; when detecting lining spalling, the laser ranging module monitors the distance change, and the signal processing unit determines the lining spalling situation based on the distance data change; S5. When the detection is completed, the drive motor is started again to reverse, drive the bidirectional threaded rod to rotate in the opposite direction, make the two moving plates move towards each other, and then drive the protective cover to move, and re-shield and protect the detection component; S6. Disconnect the detection equipment from the driving locomotive through the connecting assembly, remove the moving assembly from the subway track, and complete the entire detection process.

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