A rail thickness detection device for rail transportation maintenance

Abstract

The present invention relates to the field of rail detection technology, and in particular to a rail thickness detection device for rail transit maintenance, comprising a vehicle body, a frame fixedly mounted on both ends of the vehicle body, and a traction hook fixedly mounted on the outer wall of the frame, a mounting shaft fixedly mounted on both ends of the frame, and a bearing member sleeved on the outer side of the mounting shaft, a wheel rotatably sleeved on the outer side of the bearing member, a movable plate movably mounted on the upper side of the vehicle body, and a bracket fixedly mounted on the upper surface of the movable plate, and equidistantly distributed reinforcing ribs fixedly mounted on both sides of the bracket, and the ends of the reinforcing ribs are connected to the upper surface of the movable plate, and also includes: an adjustment and positioning module. The detection device in the present invention can walk autonomously on the rails, realize continuous detection of the thickness of the rails, greatly improve the detection efficiency, and compared with the traditional manual detection method, the detection speed and detection range have been greatly improved, which can meet the detection needs of large-scale railway lines.

Description

Technical Field

[0001] The present invention relates to the technical field of rail detection, and in particular to a rail thickness detection device for rail transportation maintenance. Background Art

[0002] In the rail transit system, rails are key components that support train operation. Their quality and condition are directly related to the safety and stability of train operation. Rail thickness is one of the important indicators to measure whether the rails are in normal use. With the long-term operation of trains, the thickness of the rails will gradually decrease due to wear, corrosion and other factors. When the thickness of the rails is reduced to a certain extent, their bearing capacity and anti-deformation ability will decrease significantly, which may cause serious safety accidents such as rail breakage and train derailment.

[0003] At present, in terms of rail thickness detection, the traditional detection method mainly relies on regular manual inspections, and local measurements of the rails are made manually using simple tools such as calipers. This method has many disadvantages. First, the efficiency of manual detection is extremely low, and it is difficult to achieve comprehensive and timely detection for long railway lines; second, the accuracy of manual detection is limited, and it is easily affected by the technical level and working status of the detection personnel, resulting in inaccurate detection results; third, manual detection cannot monitor the changes in rail thickness in real time, and it is difficult to detect potential safety hazards of the rails in time. Therefore, it is urgent to design a rail thickness detection device for rail transit maintenance to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the defects in the prior art and to propose a rail thickness detection device for rail transportation maintenance.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A rail thickness detection device for rail transit maintenance, comprising a vehicle body, a vehicle frame fixedly mounted at both ends of the vehicle body, a traction hook fixedly mounted on the outer wall of the vehicle frame, a mounting shaft fixedly mounted at both ends of the vehicle frame, a bearing member sleeved on the outer side of the mounting shaft, a wheel rotatably sleeved on the outer side of the bearing member, a movable plate movably mounted on the upper side of the vehicle body, a bracket fixedly mounted on the upper surface of the movable plate, reinforcing ribs equidistantly distributed on both sides of the bracket, and the ends of the reinforcing ribs are connected to the upper surface of the movable plate, and further comprising:

[0007] An adjustment and positioning module, which is arranged above the vehicle body and is used to adjust and limit the position of the movable plate;

[0008] A detection module, which is arranged below the bracket and is used to move with the bracket to detect the thickness of the rail;

[0009] A distance adjustment module is arranged outside the mounting shaft and is used to adjust the distance between the wheels.

[0010] As a further solution of the present invention: the adjustment and positioning module includes a positioning strip fixedly arranged on the upper surface of the vehicle body, and the cross-section of the positioning strip is T-shaped, a U-shaped fork is fixedly installed on the outer wall of one side of the movable plate, and the U-shaped fork is sleeved on the outer side of the positioning strip, a fixing frame is fixedly installed on the upper surface of the U-shaped fork, a threaded hole is opened on the outer wall of the fixing frame, and a screw is threadedly connected in the threaded hole, an adjusting wheel is fixedly installed on the top end of the screw, and a support plate is fixedly installed on the bottom end of the screw, and the support plate and the upper surface of the positioning strip are in contact with each other.

[0011] As a further solution of the present invention: the detection module includes an upper clamping plate, the outer wall of the upper clamping plate is provided with a positioning hole, and a movable frame is movably installed in the positioning hole, a grip rod is fixedly installed on the top of the movable frame, a vertical rod is fixedly installed on the upper surface of the upper clamping plate, and the vertical rod passes through the movable frame, a fixed plate is fixedly installed on the top of the vertical rod, and a first spring is sleeved on the outer side of the vertical rod, one end of the first spring is connected to the top inner wall of the movable frame, and the other end of the first spring is connected to the upper surface of the upper clamping plate, a first roller is also fixedly installed on the lower surface of the upper clamping plate, and a laser rangefinder is also fixedly installed in the upper clamping plate The cam is secured to the bottom of the frame and is provided with a plurality of cams, each of which is secured with a plurality of cams, each of which is secured with a plurality of cams. The cams are secured to the bottom of the frame and are provided with a plurality of cams. The cams are secured to the bottom of the frame and are provided with a plurality of cams.

[0012] As a further solution of the present invention: the traction assembly includes a mounting plate fixedly mounted on the upper surface of the upper splint, a universal seat 1 is fixedly mounted on the outer wall of one side of the mounting plate, and a first universal ball is rotatably connected in the universal seat 1, a sleeve is fixedly mounted on the outer wall of the first universal ball, and a telescopic rod is movably arranged in the sleeve, a movable opening is opened on the outer wall of the sleeve, a baffle rod is fixedly mounted on the outer wall of the telescopic rod, and the baffle rod is located in the movable opening, a universal seat 2 is fixedly mounted on the lower surface of the bracket, and a second universal ball is rotatably connected in the universal seat 2, and the end of the telescopic rod is fixedly connected to the outer wall of the second universal ball.

[0013] As a further solution of the present invention: connecting rods are fixedly provided on the outer walls on both sides of the lower clamping plate, and paddles are fixedly installed on the ends of the connecting rods.

[0014] As a further solution of the present invention: a hanging opening is also opened on the upper surface of the bracket, and the grip rod is located in the hanging opening, a support rod is also fixedly installed on the upper surface of the bracket, and a hook is fixedly installed on the end of the support rod, and the grip rod is hung in the hook.

[0015] As a further solution of the present invention: the distance adjustment module includes a side plate fixedly arranged on the outer wall of the mounting shaft, and an electric telescopic component is fixedly arranged through the outer wall of the side plate, and the telescopic end of the electric telescopic component is connected to the outer wall of the bearing component.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The invention provides a rail thickness detection device for rail transportation maintenance. When the rail thickness detection operation is needed, the vehicle body can be placed on the rail, and the distance between the wheels can be adjusted by the distance adjustment module so that the wheels and the rail are accurately connected, so that the vehicle body can be conveniently erected on rails of different widths. Then, the position of the movable plate can be adjusted and fixed by the adjustment and positioning module above the vehicle body so that the detection module under the bracket is just aligned with the rail. Then, the detection module can be installed on the outside of the rail, and the traction hook on one side of the vehicle frame is connected to the traction vehicle. The vehicle body is driven to move on the rail by the traction vehicle, the bracket moves with the vehicle body, and the detection module moves with the bracket on the outside of the rail, so that the purpose of detecting the thickness of the rail can be achieved. During the entire detection process, the intelligent control system stores the detected rail thickness data, location information, detection time and other data in the local memory. At the same time, the data is transmitted to the remote monitoring center in real time through the wireless communication module for management personnel to view and analyze. The remote monitoring center can draw a trend chart of rail thickness changes based on the received data, evaluate the overall condition of the rail, and provide a basis for formulating a reasonable maintenance plan. The device can walk autonomously on the rails and realize continuous detection of rail thickness, which greatly improves the detection efficiency. Compared with traditional manual detection methods, the detection speed and detection range have been greatly improved, which can meet the detection needs of large-scale railway lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a rail thickness detection device for rail transit maintenance provided by an embodiment of the present invention from a first perspective;

[0019] Figure 2 A schematic diagram of the structure of a rail thickness detection device for rail transit maintenance provided by an embodiment of the present invention from a second viewing angle;

[0020] Figure 3 A schematic diagram of the structure of a bracket in a rail thickness detection device for rail transit maintenance provided by an embodiment of the present invention from a first perspective;

[0021] Figure 4 A schematic diagram of the structure of a bracket in a rail thickness detection device for rail transit maintenance provided by an embodiment of the present invention from a second viewing angle;

[0022] Figure 5 A schematic diagram of the structure of a bracket in a rail thickness detection device for rail transit maintenance provided by an embodiment of the present invention from a third perspective;

[0023] Figure 6 A schematic diagram of the structure of a detection module in a rail thickness detection device for rail transit maintenance provided by an embodiment of the present invention;

[0024] Figure 7 A schematic diagram of the structure of a movable frame in a rail thickness detection device for rail transit maintenance provided by an embodiment of the present invention from a first viewing angle;

[0025] Figure 8 A schematic diagram of the structure of a movable frame in a rail thickness detection device for rail transit maintenance provided by an embodiment of the present invention from a second viewing angle;

[0026] Fig. 9 A schematic diagram of the structure of a lower clamping plate in a rail thickness detection device for rail transit maintenance provided by an embodiment of the present invention;

[0027] Fig.10 A schematic structural diagram of a rail thickness detection device for rail transit maintenance provided by an embodiment of the present invention from a third perspective.

[0028] In the figure: 101-body, 102-frame, 103-traction hook, 104-mounting shaft, 105-bearing member, 106-wheel, 107-movable plate, 108-bracket, 109-reinforcement rib, 201-positioning strip, 202-U-shaped fork, 203-fixed frame, 204-adjusting wheel, 205-screw, 206-butt plate, 301-upper clamp, 302-movable frame, 303-grip rod, 304-fixed plate, 305-vertical rod, 306-first spring, 307-first roller, 308-laser rangefinder, 309-lower splint, 310-second roller, 311-block bar, 312-vertical plate, 313-second spring, 314-clip plate, 315-hook, 401-connecting rod, 402-paddle, 501-mounting plate, 502-universal seat one, 503-first universal ball, 504-sleeve, 505-telescopic rod, 506-movable port, 507-block rod, 508-universal seat two, 509-second universal ball, 601-suspension port, 602-support rod, 603-hook, 701-side plate, 702-electric telescopic part. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0030] like Figure 1-Figure 10 As shown in the figure, a rail thickness detection device for rail transit maintenance provided by an embodiment of the present invention comprises a vehicle body 101, a vehicle frame 102 is fixedly installed at both ends of the vehicle body 101, and a traction hook 103 is fixedly installed on the outer wall of the vehicle frame 102, a mounting shaft 104 is fixedly provided at both ends of the vehicle frame 102, and a bearing 105 is sleeved on the outer side of the mounting shaft 104, and a wheel 106 is rotatably sleeved on the outer side of the bearing 105, and a movable plate 107 is movably provided above the vehicle body 101, and a supporting plate 107 is fixedly installed on the upper surface of the movable plate 107. The bracket 108 has equidistantly distributed reinforcing ribs 109 fixedly mounted on both sides of the bracket 108, and the ends of the reinforcing ribs 109 are connected to the upper surface of the movable plate 107, and also includes: an adjusting and positioning module, which is arranged above the vehicle body 101 and is used to adjust and limit the position of the movable plate 107; a detection module, which is arranged below the bracket 108 and is used to move with the bracket 108 to detect the thickness of the rail; and a distance adjustment module, which is arranged outside the mounting shaft 104 and is used to adjust the distance between the wheels 106.

[0031] When it is necessary to detect the thickness of the rail, the vehicle body 101 can be placed on the rail, and the distance between the wheels 106 can be adjusted by the distance adjustment module so that the wheels 106 and the rail are accurately connected, which facilitates the installation of the vehicle body 101 on rails of different widths. Then, the position of the movable plate 107 can be adjusted and fixed by the adjustment and positioning module above the vehicle body 101 so that the detection module under the bracket 108 is just aligned with the rail. Then, the detection module can be installed on the outside of the rail, and the traction hook 103 on one side of the vehicle frame 102 is connected to the tractor. The vehicle body 101 is driven by the tractor to move on the rail, the bracket 108 moves with the vehicle body 101, and the detection module moves with the bracket 108 on the outside of the rail, so that the detection can be realized. For the purpose of measuring the thickness of the rails, during the entire detection process, the intelligent control system stores the detected rail thickness data, location information, detection time and other data in the local memory. At the same time, the data is transmitted to the remote monitoring center in real time through the wireless communication module for management personnel to view and analyze. The remote monitoring center can draw a trend chart of the rail thickness changes based on the received data, evaluate the overall condition of the rails, and provide a basis for formulating a reasonable maintenance plan. The device can walk autonomously on the rails and realize continuous detection of the rail thickness, which greatly improves the detection efficiency. Compared with traditional manual detection methods, the detection speed and detection range have been greatly improved, which can meet the detection needs of large-scale railway lines.

[0032] As an embodiment of the present invention, please refer to Figure 2 and Figure 3 The adjustment and positioning module includes a positioning bar 201 fixedly arranged on the upper surface of the vehicle body 101, and the cross section of the positioning bar 201 is T-shaped, a U-shaped fork 202 is fixedly installed on the outer wall of one side of the movable plate 107, and the U-shaped fork 202 is sleeved on the outer side of the positioning bar 201, and a fixing frame 203 is fixedly installed on the upper surface of the U-shaped fork 202, and a threaded hole is opened on the outer wall of the fixing frame 203, and a screw 205 is threadedly connected in the threaded hole, an adjusting wheel 204 is fixedly installed on the top end of the screw 205, and a stop plate 206 is fixedly installed on the bottom end of the screw 205, and the stop plate 206 It fits in with the upper surface of the positioning bar 201, and the U-shaped fork 202 moves outside the positioning bar 201, which is convenient for adjusting the position of the movable plate 107, thereby achieving the purpose of adjusting the position of the bracket 108. When the detection module under the bracket 108 is aligned with the rail, the adjusting wheel 204 can be rotated to drive the screw 205 to rotate, and the screw 205 drives the abutment plate 206 to move downward, so that the abutment plate 206 abuts against the positioning bar 201, and the U-shaped fork 202 can be locked on the outside of the positioning bar 201, thereby achieving the purpose of limiting the position of the movable plate 107, which is very convenient to use.

[0033] As an embodiment of the present invention, please refer to Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9The detection module includes an upper clamping plate 301, a positioning hole is opened on the outer wall of the upper clamping plate 301, and a movable frame 302 is movably installed in the positioning hole, a gripping rod 303 is fixedly installed on the top of the movable frame 302, a vertical rod 305 is fixedly arranged on the upper surface of the upper clamping plate 301, and the vertical rod 305 passes through the movable frame 302, a fixed plate 304 is fixedly installed on the top of the vertical rod 305, and a first spring 306 is sleeved on the outer side of the vertical rod 305, one end of the first spring 306 is connected to the top inner wall of the movable frame 302, and the other end of the first spring 306 is connected to the upper surface of the upper clamping plate 301, a first roller 307 is also fixedly installed on the lower surface of the upper clamping plate 301, a laser rangefinder 308 is also fixedly arranged in the upper clamping plate 301, and the laser rangefinder 308 08 is located on both sides of the first roller 307, the outer wall of the movable frame 302 is movably provided with a lower clamping plate 309, the lower clamping plate 309 is located below the upper clamping plate 301, and the upper surface of the lower clamping plate 309 is fixedly installed with a second roller 310, the lower surface of the upper clamping plate 301 is fixedly installed with a clamping plate 314, the end of the lower clamping plate 309 is fixedly installed with a hook 315, and the clamping plate 314 is clamped between the hooks 315, the upper surface of the lower clamping plate 309 is also fixedly installed with a vertical plate 312, and the vertical plate 312 and the movable frame 302 are connected by a second spring 313, the lower surface of the lower clamping plate 309 is also fixedly installed with a blocking bar 311, and the blocking bar 311 is located between the clamping plate 314 and the movable frame 302, and a traction component is also provided below the bracket 108, which is used for The upper clamping plate 301 is connected to the bracket 108. When installing the detection module, the gripping rod 303 can be manually gripped to drive the movable frame 302 to move downward, so that the upper clamping plate 301 is close to the rail, until the first roller 307 on the lower surface of the upper clamping plate 301 fits the upper surface of the rail, and as the gripping rod 303 further applies downward pressure to the movable frame 302, the first spring 306 on the outer side of the vertical rod 305 can be compressed, so that the movable frame 302 moves downward in the upper clamping plate 301, and the lower clamping plate 309 moves downward with the movable frame 302 until the hook 315 at the end of the lower clamping plate 309 is separated from the clamping plate 314. At this time, under the resetting action of the second spring 313, the lower clamping plate 309 can be pulled toward the rail with the help of the vertical plate 312. The upper clamping plate 301 and the lower clamping plate 309 are moved together until the blocking bar 311 on the lower surface of the lower clamping plate 309 is blocked by the movable frame 302. At this time, the second roller 310 on the upper surface of the lower clamping plate 309 just moves to the bottom of the rail. At this time, the gripping rod 303 is released again. Under the reset action of the first spring 306, the upper clamping plate 301 and the lower clamping plate 309 can be brought closer to each other, so that the rail is clamped between the first roller 307 and the second roller 310. At this time, when the bracket 108 moves with the vehicle body 101, the traction assembly under the bracket 108 can pull the upper clamping plate 301 and the lower clamping plate 309 to move together on the outside of the rail. With the help of the laser rangefinder 308 in the upper clamping plate 301, a laser beam can be emitted downward to the surface of the lower clamping plate 309 and the time from the emission to the reflection of the laser beam can be measured.The distance change value between the upper clamping plate 301 and the lower clamping plate 309 is calculated by using the constant light speed principle to judge the thickness change of the rail. The device is easy to install and very convenient to use. Furthermore, under the elastic force of the first spring 306, the first roller 307 and the second roller 310 can always be in contact with the rail to ensure detection accuracy and better use effect.

[0034] As an embodiment of the present invention, please refer to Figure 5 and Figure 6 The traction assembly includes a mounting plate 501 fixedly mounted on the upper surface of the upper clamping plate 301, a universal seat 502 is fixedly mounted on the outer wall of one side of the mounting plate 501, and a first universal ball 503 is rotatably connected in the universal seat 502, a sleeve 504 is fixedly mounted on the outer wall of the first universal ball 503, and a telescopic rod 505 is movably arranged in the sleeve 504, a movable opening 506 is opened on the outer wall of the sleeve 504, a blocking rod 507 is fixedly mounted on the outer wall of the telescopic rod 505, and the blocking rod 507 is located in the movable opening 506, a universal seat 2 508 is fixedly mounted on the lower surface of the bracket 108, and the universal seat 2 508 is fixedly mounted on the lower surface of the bracket 108. A second universal ball 509 is rotatably connected, and the end of the telescopic rod 505 is fixedly connected to the outer wall of the second universal ball 509. When the bracket 108 moves with the vehicle body 101, the universal seat 2 508 moves with the bracket 108. The second universal ball 509 in the universal seat 2 508 can use the sleeve 504 and the telescopic rod 505 to pull the first universal ball 503 in the universal seat 1 502 on one side of the mounting plate 501, thereby pulling the upper splint 301. In addition, this kind of universal connection can prevent the shaking of the vehicle body 101 from affecting the stability of the detection module, and the use effect is better.

[0035] As an embodiment of the present invention, please refer to Figure 4 and Fig. 9 , connecting rods 401 are fixedly provided on the outer walls of both sides of the lower clamping plate 309, and paddles 402 are fixedly installed on the ends of the connecting rods 401. When it is necessary to release the clamping of the first roller 307 and the second roller 310 on the rail, the paddle 402 can be pushed, prompting the paddle 402 to drive the lower clamping plate 309 to move through the connecting rod 401, so that the hook 315 at the end of the lower clamping plate 309 moves toward the clamping plate 314, so that the hook 315 is re-connected to the outside of the clamping plate 314, and the clamping of the first roller 307 and the second roller 310 on the rail can be released, which is very convenient to use.

[0036] As an embodiment of the present invention, please refer to Figure 3 and Figure 4A hanging opening 601 is also provided on the upper surface of the bracket 108, and the grip 303 is located in the hanging opening 601. A support rod 602 is also fixedly installed on the upper surface of the bracket 108, and a hook 603 is fixedly installed at the end of the support rod 602. The grip 303 is hung in the hook 603. When detection is not needed, the grip 303 can be normally hung on the hook 603, so that the detection module is hung below the bracket 108, which is very convenient to use.

[0037] As an embodiment of the present invention, please refer to Figure 1 and Figure 2 The distance adjustment module includes a side plate 701 fixedly arranged on the outer wall of the mounting shaft 104, and an electric telescopic member 702 is fixedly arranged on the outer wall of the side plate 701, and the telescopic end of the electric telescopic member 702 is connected to the outer wall of the bearing member 105. The electric telescopic member 702 can drive the bearing member 105 to move outside the mounting shaft 104, so that the wheel 106 moves together, which is convenient for adjusting the position of the wheel 106 according to the width of the rail, and is more flexible to use.

[0038] During use, when it is necessary to detect the thickness of the rail, the vehicle body 101 can be placed on the rail, and the distance between the wheels 106 can be adjusted by the distance adjustment module, so that the wheels 106 and the rail are accurately connected, so that the vehicle body 101 can be set up on rails of different widths. Then, the position of the movable plate 107 can be adjusted and fixed by the adjustment and positioning module above the vehicle body 101, so that the detection module under the bracket 108 is just aligned with the rail, and then the detection module can be installed on the outside of the rail, and the traction hook 103 on one side of the frame 102 is connected to the tractor, and the vehicle body 101 is driven by the tractor to move on the rail, and the bracket 108 moves with the vehicle body 101, and the detection module moves with the bracket 108 on the outside of the rail, so that The purpose of detecting the thickness of the rails is to detect the thickness of the rails. During the entire detection process, the intelligent control system stores the detected rail thickness data, location information, detection time and other data in the local memory. At the same time, the data is transmitted to the remote monitoring center in real time through the wireless communication module for management personnel to view and analyze. The remote monitoring center can draw a trend chart of the rail thickness changes based on the received data, evaluate the overall condition of the rails, and provide a basis for formulating a reasonable maintenance plan. The device can walk autonomously on the rails and realize continuous detection of the rail thickness, which greatly improves the detection efficiency. Compared with traditional manual detection methods, the detection speed and detection range have been greatly improved, which can meet the detection needs of large-scale railway lines.

[0039] It should be particularly noted that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A rail thickness detection device for rail transit maintenance, comprising a vehicle body, characterized in that: The vehicle body is fixedly mounted with a frame at both ends, and a towing hook is fixedly mounted on the outer wall of the frame, the vehicle frame is fixedly mounted with a mounting shaft at both ends, and a bearing is sleeved on the outer side of the mounting shaft, and a wheel is rotatably sleeved on the outer side of the bearing, a moving plate is movably arranged above the vehicle body, and a bracket is fixedly mounted on the upper surface of the moving plate, and reinforcing ribs distributed at equal distances are fixedly mounted on both sides of the bracket, and the ends of the reinforcing ribs are connected to the upper surface of the moving plate, and further comprising: An adjustment and positioning module, which is arranged above the vehicle body and is used to adjust and limit the position of the movable plate; The detection module is arranged under the bracket and is used for moving with the bracket to detect the thickness of the rail. The detection module includes an upper clamping plate, a positioning hole is opened on the outer wall of the upper clamping plate, and a movable frame is movably installed in the positioning hole, a gripping rod is fixedly installed on the top of the movable frame, a vertical rod is fixedly arranged on the upper surface of the upper clamping plate, and the vertical rod passes through the movable frame, a fixing plate is fixedly installed on the top of the vertical rod, and a first spring is sleeved on the outer side of the vertical rod, one end of the first spring is connected to the top inner wall of the movable frame, and the other end of the first spring is connected to the upper surface of the upper clamping plate, a first roller is also fixedly installed on the lower surface of the upper clamping plate, and the upper clamping plate is fixedly installed on the top inner wall of the movable frame, and the other end of the first spring is connected to the upper surface of the upper clamping plate, a first roller is also fixedly installed on the lower surface of the upper clamping plate, and the upper clamping plate is fixedly installed on the top inner wall of the movable frame, and the other end of the first spring is connected to the upper surface of the upper clamping plate. A laser rangefinder is also fixedly arranged in the plate, and the laser rangefinder is located on both sides of the first roller. A lower clamping plate is movably arranged through the outer wall of the movable frame, the lower clamping plate is located below the upper clamping plate, and a second roller is fixedly installed on the upper surface of the lower clamping plate, a clamping plate is fixedly installed on the lower surface of the upper clamping plate, a hook is fixedly installed on the end of the lower clamping plate, and the clamping plate is clamped between the hooks, a vertical plate is also fixedly installed on the upper surface of the lower clamping plate, and the vertical plate and the movable frame are connected by a second spring, a baffle is also fixedly installed on the lower surface of the lower clamping plate, and the baffle is located between the baffle and the movable frame, and a traction component is also arranged below the bracket for connecting the upper clamping plate and the bracket; A distance adjustment module is arranged outside the mounting shaft and is used to adjust the distance between the wheels.

2. A rail thickness detection device for rail transit maintenance according to claim 1, characterized in that: The adjustment and positioning module includes a positioning bar fixedly arranged on the upper surface of the vehicle body, and the cross-section of the positioning bar is T-shaped, a U-shaped fork is fixedly installed on the outer wall of one side of the movable plate, and the U-shaped fork is sleeved on the outer side of the positioning bar, a fixing frame is fixedly installed on the upper surface of the U-shaped fork, a threaded hole is opened on the outer wall of the fixing frame, and a screw is threadedly connected in the threaded hole, an adjusting wheel is fixedly installed on the top end of the screw, and a butt plate is fixedly installed on the bottom end of the screw, and the butt plate is in contact with the upper surface of the positioning bar.

3. The rail thickness detection device for rail transit maintenance according to claim 1, characterized in that: The traction assembly includes a mounting plate fixedly mounted on the upper surface of the upper clamping plate, a universal seat 1 is fixedly mounted on the outer wall of one side of the mounting plate, and a first universal ball is rotatably connected in the universal seat 1, a sleeve is fixedly mounted on the outer wall of the first universal ball, and a telescopic rod is movably arranged in the sleeve, a movable opening is opened on the outer wall of the sleeve, a blocking rod is fixedly mounted on the outer wall of the telescopic rod, and the blocking rod is located in the movable opening, a universal seat 2 is fixedly mounted on the lower surface of the bracket, and a second universal ball is rotatably connected in the universal seat 2, and the end of the telescopic rod is fixedly connected to the outer wall of the second universal ball.

4. A rail thickness detection device for rail transit maintenance according to claim 3, characterized in that: Connecting rods are fixedly arranged on the outer walls of both sides of the lower clamping plate, and paddles are fixedly installed on the ends of the connecting rods.

5. The rail thickness detection device for rail transit maintenance according to claim 4, characterized in that: The upper surface of the bracket is also provided with a hanging opening, and the gripping rod is located in the hanging opening. The upper surface of the bracket is also fixedly provided with a supporting rod, and the end of the supporting rod is fixedly provided with a hook, and the gripping rod is hooked in the hook.

6. The rail thickness detection device for rail transit maintenance according to claim 1, characterized in that: The distance adjustment module comprises a side plate fixedly arranged on the outer wall of the mounting shaft, and an electric telescopic component is fixedly arranged through the outer wall of the side plate, and the telescopic end of the electric telescopic component is connected to the outer wall of the bearing component.

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