Special inspection vehicle for track detection

Abstract

The invention discloses a special inspection vehicle for track detection, which comprises an inspection vehicle body, a detection device arranged on the inspection vehicle body and a driving device, the driving device comprises a power frame fixed on the inspection vehicle body and a plurality of driving wheels rotationally connected to the power frame, the plurality of driving wheels are divided into two groups, and the two groups of driving wheels are arranged on two sides of the inspection vehicle body; a synchronizing shaft is fixed between the corresponding travelling wheels of the two groups of travelling wheels, and a driving piece for driving the synchronizing shaft to rotate is arranged on the power frame; a braking mechanism is arranged on the power frame and comprises a braking oil cylinder and a braking block which are fixed to the power frame, a supporting part is arranged on the power frame, the middle of the braking block is hinged to the supporting part, and one end of the braking block is hinged to the driving end of the braking oil cylinder. The end, away from the brake oil cylinder, of the brake block can be close to and abut against the traveling wheels and / or the synchronizing shaft. According to the invention, automation and intellectualization of the inspection process are realized, manual inspection can be replaced in environments of severe weather such as rain and snow, and the efficiency of track inspection is greatly improved; and meanwhile, the system can adapt to track inspection and accurate positioning of mountain landforms, the accuracy of track inspection is improved, and the safety of inspection personnel and equipment can be protected.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit equipment detection, and in particular to a special inspection vehicle for rail detection. Background Art

[0002] In the rapidly developing rail transit industry, the safety, stability and efficient operation and maintenance of the rail system are the key to ensuring passenger safety and smooth travel. With the continuous expansion of the urban rail network, rail inspection is becoming increasingly important as an important link in ensuring rail quality and preventing failures.

[0003] Track detection methods usually include the following two methods: one is to rely on railway staff to conduct inspections along the track section; the other is that the staff pushes the track detector along the track to detect the static parameters of the track through the track detector. However, the above-mentioned traditional manual inspection method is not only inefficient, but also difficult to cope with the complex and changeable operating environment, especially in the face of severe weather such as rain and snow, the inspection work is even more difficult to sustain, so it needs to be improved. Therefore, some inspection vehicles have appeared for inspections along track sections. The inspection vehicle usually includes a walking mechanism and a detection device arranged on the walking structure. The walking mechanism includes walking wheels and a drive motor that drives the walking wheels to move. When a problem point on the track is detected, the drive motor is controlled to shut down so that the inspection vehicle stops to locate the problem point.

[0004] When it comes to track inspection in mountainous terrain, since the ground around the track is usually uneven or even sloped, when the existing inspection vehicle controls the running wheels to stop, the uneven or sloped road surface can cause the inspection vehicle to slip, resulting in inaccurate positioning of problem points and reduced inspection efficiency; the inspection vehicle may even roll over due to unstable center of gravity due to sliding down the slope, causing damage to the detection equipment. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a special inspection vehicle for track inspection which can adapt to the track inspection in mountainous terrain and can accurately locate the problem points.

[0006] In order to solve the above technical problems, the track inspection special inspection vehicle provided by the present invention adopts the following technical solutions:

[0007] A special inspection vehicle for track inspection, comprising an inspection vehicle body, an inspection device and a traveling device arranged on the inspection vehicle body, wherein the traveling device comprises a power frame fixed to the inspection vehicle body and a plurality of running wheels rotatably connected to the power frame, the plurality of running wheels are divided into two groups and the two groups of running wheels are arranged on both sides of the inspection vehicle body, a synchronous shaft is fixed between the corresponding running wheels of the two groups of running wheels, and a driving member for driving the synchronous shaft to rotate is arranged on the power frame; a braking mechanism is arranged on the power frame, and the braking mechanism comprises a brake cylinder and a brake block fixed to the power frame, and a supporting part is arranged on the power frame, the middle part of the brake block is hinged to the supporting part and one end is hinged to the driving end of the brake cylinder, and during the extension of the driving end of the brake cylinder, the end of the brake block away from the brake cylinder can approach and abut the running wheel and / or the synchronous shaft.

[0008] By adopting the above technical solution, when the inspection equipment inspects the track, the detection device and the driving device on the inspection vehicle body enter the standby state. The driving part starts to work, and the driving part controls the rotation of the running wheels to make the inspection vehicle body move forward along the track. While the inspection vehicle body is moving, the detection device starts to fully scan the track conditions (these data are transmitted to the control system in real time for analysis and processing). By setting the synchronous shaft, the driving part drives the synchronous shaft to rotate, ensuring the synchronous rotation of the remaining running wheels on both sides during driving, making the inspection vehicle body more stable during driving, so as to better adapt to the track inspection in mountainous terrain, reduce the detection error caused by bumps, and improve the stability of the inspection driving process.

[0009] When the detection device detects a problem on the track, the brake mechanism is quickly activated, the brake cylinder is activated, and the piston in the brake cylinder moves downward (or moves according to the design direction) under the action of oil pressure, thereby pushing the end part of the brake pad. Since the middle section of the brake pad is hingedly mounted on the support part, when the brake cylinder pushes the end of the brake pad, the brake pad will rotate around the hinge point, and the rotation action will cause the front end of the brake pad (i.e., in the direction toward the running wheel) to approach and press the running wheel and / or the synchronous shaft. According to the principle of lever, under the piston of the above-mentioned brake cylinder, the pressure of the brake pad against the running wheel and / or the synchronous shaft can be large enough to obtain a large enough braking force to prevent the further movement of the inspection vehicle body, so that it can slow down and stop in a short time, so that the inspection vehicle body can slow down and stop near the problem area in a very short time, ensuring that the inspection personnel can safely approach the problem area for further inspection or processing. After the problem is processed, it can be selected to continue the inspection or end the current task according to the actual situation. If the inspection is to continue, restart the drive unit to allow the vehicle to continue moving along the track. If the task is to be completed, turn off the power and perform necessary maintenance and upkeep.

[0010] The above structure realizes the automation and intelligence of the inspection process, and can replace manual inspection in severe weather conditions such as rain and snow, greatly improving the efficiency of track inspection. At the same time, the rapid response and strong braking force of the braking mechanism can stop the vehicle quickly when a problem is detected, and can adapt to track inspection and accurate positioning in mountainous terrain, thereby improving the accuracy of track inspection and protecting the safety of inspection personnel and equipment. It is widely used in various track inspection scenarios.

[0011] Optionally, a brake claw is provided at one end of the brake block away from the brake cylinder, the length of the brake claw is less than the spacing between the two sets of running wheels, and the abutment surface of the brake claw is matched with the outer wall of the synchronization shaft.

[0012] By adopting the above technical solution, since the abutment surface of the brake pawl is matched with the outer wall of the synchronous shaft, the contact area and friction between the brake pawl and the synchronous shaft are increased, which can generate a greater braking force, ensuring that the inspection vehicle body can stop quickly and stably, and further improving the braking accuracy.

[0013] Optionally, a brake claw is provided at one end of the brake block away from the brake cylinder, the length of the brake claw is greater than the spacing between the two sets of running wheels, and the abutment surface of the brake claw is matched with the outer wall of the running wheel.

[0014] By adopting the above technical solution, the brake block drives the brake claw to approach and press against the wheels on both sides at the same time, so that the wheels on both sides are braked synchronously to ensure the smoothness of braking; and because the abutting surface of the brake claw is matched with the outer wall of the wheel, the contact area and friction between the brake claw and the wheel are increased, which can generate greater braking force, ensuring that the inspection vehicle body can stop quickly and stably, and further improving the braking accuracy.

[0015] Optionally, the power frame includes a connecting arm fixedly mounted on the inspection vehicle body and two wheel hub mounting plates mounted on the connecting arm, the two wheel hub mounting plates are respectively rotatably connected to at least two running wheels, and the rotating drive member is disposed on the wheel hub mounting plate.

[0016] By adopting the above technical solution, the running wheels on both sides roll stably along the track surface with the support of the wheel hub mounting plate, and the connecting arm firmly connects the wheel hub mounting plate to the inspection vehicle body, so as to ensure the smooth movement of the running wheels while stably bearing the weight of the inspection vehicle body and the detection device.

[0017] Optionally, the connecting arm is fixedly provided with a load-bearing crossbeam, and the cross-section of the load-bearing crossbeam perpendicular to the wheel hub mounting plate is trapezoidal.

[0018] By adopting the above technical solution and setting the load-bearing crossbeam, the weight of the inspection vehicle body and various forces generated during operation can be effectively dispersed, which helps to reduce the direct impact on the connecting arm and protect the integrity and stability of the vehicle body structure; at the same time, the cross-section of the load-bearing crossbeam is selected to be trapezoidal, which is beneficial to the bending and torsional resistance of the load-bearing crossbeam, thereby improving the adaptability and durability of the inspection vehicle body under complex working conditions.

[0019] Optionally, both of the two wheel hub mounting plates are provided with assembly holes, the connecting arm is simultaneously passed through the two assembly holes, and a damping spring component for reducing shock to the inspection vehicle body is detachably connected between the connecting arm and the two wheel hub mounting plates.

[0020] By adopting the above technical solution, the design of the assembly hole and the detachable connection between the connecting arm and the hub mounting plate through the damping spring member, the connecting arm can be installed and disassembled relative to the hub mounting plate, and the staff can carry the above module to the site and then assemble it, which is convenient for the inspection vehicle to carry and use in mountainous terrain; at the same time, the damping spring member can effectively absorb these shocks and vibrations, thereby reducing the vibration and noise transmitted from the running wheel to the inspection vehicle body, improving the stability of the inspection vehicle body, and reducing the interference with the detection of the detection device.

[0021] Optionally, the hub mounting plate is fixedly connected to a tray, the connecting arm is located above the tray, and one end of the damping spring member is fixed to the connecting arm and the other end is fixed to the tray.

[0022] By adopting the above technical solution, through the setting of the connecting arm located above the tray, the damping spring member can connect the connecting arm and the wheel hub mounting plate while reducing shock and noise of the inspection vehicle body; and through the setting of the tray, the shock absorption effect is made more concentrated and effective, which helps to improve the overall stability, while having high adaptability and flexibility.

[0023] Optionally, the inspection vehicle body is provided with a hook head, and the hook head is located at the front end and / or the rear end of the inspection vehicle body in its own moving direction.

[0024] By adopting the above technical solution, when the inspection route or combination needs to be changed, the vehicle combination can be quickly adjusted to adapt to different operational requirements, and the inspection vehicle body can be firmly connected with other vehicles or equipment.

[0025] Optionally, an anti-drop lock hook is provided at the bend of the hook head.

[0026] By adopting the above technical solution, mechanical connection structures such as the hook head and the anti-detachment lock hook have high strength and stability, and can withstand greater traction and impact force. The anti-detachment lock hook ensures that the connection will not be accidentally disengaged, thereby improving operation safety.

[0027] Optionally, the hook head is provided with a hook body, the hook body is fixedly connected with a fixing plate, and the fixing plate is bolted to the inspection vehicle body.

[0028] By adopting the above technical solution, the fixing plate adopts a detachable installation method, which can be easily disassembled and reinstalled, reducing the difficulty and cost of maintenance.

[0029] In summary, the present invention includes at least one of the following beneficial technical effects:

[0030] 1. The above structure realizes the automation and intelligence of the inspection process, which can replace manual inspection in bad weather such as rain and snow, greatly improving the efficiency of track inspection; at the same time, the rapid response and strong braking force of the braking mechanism can quickly stop the vehicle when a problem is detected, which can adapt to track inspection and accurate positioning in mountainous terrain, improve the accuracy of track inspection, and protect the safety of inspection personnel and equipment;

[0031] 2. By setting the synchronous shaft, the driving member drives the synchronous shaft to rotate, ensuring the synchronous rotation of the remaining wheels on both sides during driving, making the inspection vehicle body more stable during driving, reducing the detection error caused by bumps, and improving the stability of the inspection driving process;

[0032] 3. The connecting arm and the wheel hub mounting plate are connected by a damping spring component, which can effectively absorb these impacts and vibrations, thereby reducing the vibration and noise transmitted from the running wheels to the inspection vehicle body, improving the stability of the inspection vehicle body, and reducing the interference with the detection of the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of a special inspection vehicle for track inspection in an embodiment of the present application.

[0034] Figure 2 It is a side view of a special inspection vehicle for track inspection in an embodiment of the present application.

[0035] Figure 3 It is a rear view of a special inspection vehicle for track inspection in an embodiment of the present application.

[0036] Figure 4 It is a partial cross-sectional view used to illustrate the braking mechanism in the embodiment of the present application.

[0037] Figure 5 It is a structural schematic diagram used to reflect the internal structure of the brake mechanism in the embodiment of the present application.

[0038] Explanation of the reference numerals in the accompanying drawings: 1. Inspection vehicle body; 2. Detection device; 3. Traveling device; 31. Power frame; 311. Connecting arm; 312. Hub mounting plate; 32. Traveling wheel; 33. Driving member; 4. Braking mechanism; 41. Brake seat; 42. Brake cylinder; 43. Brake block; 5. Synchronous shaft; 6. Support portion; 7. Brake pawl; 8. Load-bearing crossbeam; 9. Assembly hole; 10. Damping spring member; 11. Tray; 12. Hook mechanism; 121. Hook head; 122. Hook body; 13. Anti-drop lock hook; 14. Fixing plate; 15. Rib plate. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-5 The present invention is described in further detail.

[0040] The embodiment of the present invention discloses a special inspection vehicle for track inspection. Figure 1 The special inspection vehicle for track inspection includes an inspection vehicle body 1, which is in the shape of a vehicle plate. A detection device 2 is installed on the upper side of the inspection vehicle body 1, and the detection device 2 is used to inspect the track. The detection device 2 in the embodiment of the present invention includes a high-definition camera and a sensor. The detection device 2 is used to comprehensively scan the track condition, and the scanned data is transmitted to the control system in real time for analysis and processing. The detection device 2 that can realize the above functions is a known prior art, and the present invention does not elaborate on it.

[0041] Reference Figure 2 , Figure 3 and Figure 4 The inspection vehicle body 1 is equipped with a travel device 3, which includes a power frame 31, four travel wheels 32 and a driving member 33. The power frame 31 includes a connecting arm 311 and two hub mounting plates 312. The connecting arm 311 is fixedly connected to the inspection vehicle body 1. The two hub mounting plates 312 are respectively arranged at both ends of the connecting arm 311 along its length direction, and the two hub mounting plates 312 are both perpendicularly arranged on the connecting arm 311. The four travel wheels 32 are divided into two groups, and the two groups of travel wheels 32 are respectively correspondingly arranged on the two hub mounting plates 312. The travel wheels 32 are rotatably mounted on the hub mounting plates 312 through bearings, and the rotation planes of the four travel wheels 32 are parallel to the hub mounting plates 312. The connecting arm 311 is fixedly equipped with a load-bearing crossbeam 8, and the cross section of the load-bearing crossbeam 8 perpendicular to the hub mounting plate is inverted trapezoidal.

[0042] The running wheels 32 on both sides roll stably along the track surface under the support of the wheel hub mounting plate 312, and the connecting arm 311 firmly connects the wheel hub mounting plate 312 with the inspection vehicle body 1, so that the running wheels 32 can be ensured to move smoothly while stably bearing the weight of the inspection vehicle body 1 and the detection device 2. In addition, by setting the bearing crossbeam 8, the weight of the inspection vehicle body 1 and various forces generated during operation can be effectively dispersed, which helps to reduce the direct impact on the connecting arm 311 and protect the integrity and stability of the vehicle body structure; at the same time, the cross section of the bearing crossbeam 8 is selected as a trapezoid, which is beneficial to the bending and torsion resistance of the bearing crossbeam 8, and improves the adaptability and durability of the inspection vehicle body 1 under complex working conditions.

[0043] Reference Figure 3 and Figure 5 , both hub mounting plates 312 are provided with assembly holes 9, and a tray 11 is welded and fixed to the lower edge of the assembly holes 9 of the two hub mounting plates 312, and the tray 11 is arranged horizontally, and a plurality of damping spring members 10 are installed on the tray 11, and the elastic expansion and contraction directions of the plurality of damping spring members 10 are arranged vertically. The two ends of the connecting arm 311 respectively pass through the assembly holes 9 of the two hub mounting plates 312, and the connecting arm 311 is fixedly connected to the plurality of damping spring members 10. In the embodiment of the present application, one end of the damping spring member 10 is glued into the tray 11, and the other end of the damping spring member 10 is glued to the connecting arm 311, so as to realize the detachable connection between the damping spring member 10 and the tray 11 and the connecting arm 311. In other embodiments of the present application, other methods such as bolt connection and clamping can also be used to realize the detachable connection between the damping spring member 10 and the tray 11 and the connecting arm 311.

[0044] The design of the assembly hole 9 makes it easier to install and remove the connecting arm 311 relative to the hub mounting plate 312; by arranging the connecting arm 311 above the tray 11, the damping spring member 10 can effectively absorb these shocks and vibrations while connecting the connecting arm 311 and the hub mounting plate 312, thereby reducing the vibration and noise transmitted from the running wheel 32 to the inspection vehicle body 1, improving the stability of the inspection vehicle body 1, and reducing the interference with the detection of the detection device 2. Compared with a single damping spring member 10, multiple damping spring members 10 can provide greater damping force and a wider shock absorption frequency range, thereby more comprehensively suppressing vibration and further improving the shock absorption effect; and, through the arrangement of the tray 11, the shock absorption effect of multiple damping spring members 10 is more concentrated and effective, which helps to improve the overall stability, while having high adaptability and flexibility.

[0045] Reference Figure 2 and Figure 5Since the track may be uneven or have a certain slope, the traditional asynchronous driving method may cause the speed of the wheels on both sides to be inconsistent, thereby affecting the stability of the inspection vehicle body 1. A synchronization shaft 5 is fixedly connected between each corresponding two running wheels 32 on the two wheel hub mounting plates 312. The synchronization shaft 5 is perpendicular to the rotation plane of the running wheels 32. The synchronization shaft 5 passes through and is rotatably connected to the two wheel hub mounting plates 312. The driving member 33 is installed on one of the wheel hub mounting plates 312. The driving member 33 in the embodiment of the present application is a servo motor, and the output end of the driving member 33 is fixedly connected to one of the synchronization shafts 5.

[0046] By setting the synchronous shaft 5, the driving member 33 drives the synchronous shaft 5 to rotate, ensuring the synchronous rotation of the remaining running wheels 32 on both sides during driving, making the inspection vehicle body 1 more stable during driving, reducing detection errors caused by bumps, and improving the stability of the inspection driving process.

[0047] Reference Figure 4 and Figure 5 The connecting arm 311 is provided with a brake mechanism 4, which includes a brake seat 41, a brake cylinder 42 and a brake block 43. The brake seat 41 is fixed on the connecting arm 311, and the brake cylinder 42 is vertically fixed on the brake seat 41. A support portion 6 is welded and fixed on the brake seat 41, and the support portion 6 is located between the brake cylinder 42 and the synchronous shaft 5. The end of the brake block 43 is hingedly mounted on the output end of the brake cylinder 42, and the middle section of the brake block 43 is hingedly mounted on the support portion 6. The end of the brake block 43 away from the brake cylinder 42 is the brake end, and the brake end of the brake block 43 is arranged toward the synchronous shaft 5 connected to the driving member 33.

[0048] The braking end of the brake block 43 is fixedly mounted with a brake claw 7. In the embodiment of the present application, the length of the brake claw 7 is greater than the spacing between the two sets of running wheels 32. The brake claw 7 is simultaneously facing the running wheels 32 on both sides of the inspection vehicle body 1. The brake claw 7 can abut against the running wheels 32, and the abutting surface of the brake claw 7 is matched with the outer wall of the running wheels 32. In other embodiments of the present application, the length of the brake claw 7 is less than the spacing between the two sets of running wheels 32, the brake claw 7 can be directly facing the synchronous shaft 5, the length of the brake block 43 is correspondingly set to be longer, the brake claw 7 can abut against the synchronous shaft 5, and the abutting surface of the brake claw 7 is matched with the outer wall of the synchronous shaft 5.

[0049] When the brake oil cylinder 42 is in motion, the piston in the brake oil cylinder 42 will move downward under the action of the oil pressure, thereby pushing the end portion of the brake block 43. Since the middle section of the brake block 43 is hingedly mounted on the support portion 6, when the brake oil cylinder 42 pushes the end of the brake block 43, the brake block 43 will rotate around the hinge point, and the brake block 43 drives the brake pawl 7 to approach and press against the synchronous shaft 5. As the brake pawl 7 presses against the synchronous shaft 5, the braking force will gradually be generated and increased, preventing the further movement of the inspection vehicle 1, so that it can slow down and stop in a short time, so that the inspection vehicle 1 can slow down and stop near the problem area in a very short time, ensuring that the inspection personnel can safely approach the problem area for further inspection or processing. Since the abutting surface of the brake pawl 7 is matched with the outer wall of the synchronous shaft 5, the contact area and friction between the brake pawl 7 and the synchronous shaft 5 are increased, and a greater braking force can be generated, ensuring that the inspection vehicle 1 can stop quickly and stably, and further improving the braking accuracy.

[0050] Reference Figure 1 and Figure 2 A coupler mechanism 12 is installed on the inspection vehicle body 1, and the coupler mechanism 12 is installed at the front end of the inspection vehicle body 1 along its own traveling direction. The coupler mechanism 12 includes a hook head 121 and a hook body 122, and a fixing plate 14 is welded and fixed on the hook body 122, and the fixing plate 14 is fixedly installed on the front end of the inspection vehicle body 1 by bolts, and a plurality of ribs 15 are installed between the fixing plate 14 and the hook body 122. The ribs 15, as a reinforcing structure, can significantly improve the connection strength between the fixing plate 14 and the hook body 122, ensure the stable connection between the hook body 122 and the inspection vehicle body 1, and improve the safety and reliability of the equipment.

[0051] Reference Figure 1 and Figure 2 The hook head 121 is welded and fixed to the end of the hook body 122 away from the fixing plate 14. In this embodiment, the anti-disconnection lock hook 13 is hingedly installed at the bend of the hook head 121. When it is necessary to change the inspection route or combination, the vehicle combination can be quickly adjusted to adapt to different operation requirements, and the inspection vehicle body 1 can be firmly connected with other vehicles or equipment. The mechanical connection structure such as the hook head 121 and the anti-disconnection lock hook 122 has high strength and stability, and can withstand large traction and impact force. The anti-disconnection lock hook 13 ensures that the connection will not be accidentally disengaged, thereby improving the safety of the operation.

[0052] The implementation principle of a special inspection vehicle for track inspection in an embodiment of the present invention is as follows: when inspecting the track, the detection device 2 and the driving device 3 on the inspection vehicle body 1 are both in a standby state. The driving member 33 starts to work, and the driving member 33 controls the running wheels 32 to rotate, so that the inspection vehicle body 1 moves forward along the track.

[0053] While the inspection vehicle 1 is moving, the detection device 2 starts to fully scan the track condition. When the detection device 2 detects a problem on the track, the brake mechanism 4 is quickly started, the brake cylinder 42 is activated, and the piston in the brake cylinder 42 moves downward under the action of the oil pressure, thereby pushing the end part of the brake block 43, driving the brake claw 7 to approach and press the synchronous shaft 5. As the brake claw 7 presses the synchronous shaft 5, the braking force will gradually generate and increase, preventing the further movement of the inspection vehicle 1, so that it can slow down and stop in a short time, so that the inspection vehicle 1 can slow down and stop near the problem area in a very short time, ensuring that the inspection personnel can safely approach the problem area for further inspection or processing. After the problem is processed, it can be selected to continue the inspection or end the current task according to the actual situation. If the inspection continues, restart the drive member 33 to make the inspection vehicle 1 continue to move along the track. If the task is to be completed, turn off the power supply and perform necessary maintenance and maintenance work.

[0054] Through the configuration of the inspection vehicle body 1, the detection device 2 and the driving device 3, the automation and intelligence of the inspection process are realized, which can replace manual inspection in adverse weather conditions such as rain and snow, greatly improving the efficiency of track inspection; at the same time, the rapid response and strong braking force of the braking mechanism 4 can quickly stop the vehicle when a problem is detected, can adapt to track inspection and accurate positioning in mountainous terrain, improve the accuracy of track inspection, and can protect the safety of inspection personnel and equipment, and is widely used in various track inspection scenarios.

[0055] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A special inspection vehicle for track inspection, characterized in that: The invention comprises a patrol vehicle body (1), a detection device (2) arranged on the patrol vehicle body (1), and a travel device (3); the travel device (3) comprises a power frame (31) fixed to the patrol vehicle body (1) and a plurality of running wheels (32) rotatably connected to the power frame; the plurality of running wheels (32) are divided into two groups and the two groups of running wheels (32) are arranged on both sides of the patrol vehicle body (1); a synchronous shaft (5) is fixed between the corresponding running wheels (32) of the two groups of running wheels (32); and a driving member for driving the synchronous shaft (5) to rotate is arranged on the power frame (31). (33); A brake mechanism (4) is provided on the power frame (31), and the brake mechanism (4) comprises a brake cylinder (42) and a brake block (43) fixed to the power frame (31); a support portion (6) is provided on the power frame (31); a middle portion of the brake block (43) is hinged to the support portion (6) and one end is hinged to a driving end of the brake cylinder (42); when the driving end of the brake cylinder (42) is extended, the end of the brake block (43) away from the brake cylinder (42) can approach and abut against the running wheel (32) and / or the synchronous shaft (5).

2. A special inspection vehicle for track inspection according to claim 1, characterized in that: A brake claw (7) is provided at one end of the brake block (43) away from the brake oil cylinder (42); the length of the brake claw (7) is less than the spacing between the two sets of running wheels (32); and the abutment surface of the brake claw (7) is matched with the outer wall of the synchronous shaft (5).

3. A special inspection vehicle for track inspection according to claim 1, characterized in that: A brake claw (7) is provided at one end of the brake block (43) away from the brake oil cylinder (42); the length of the brake claw (7) is greater than the spacing between the two sets of running wheels (32); and the abutting surface of the brake claw (7) is matched with the outer wall of the running wheel (5).

4. A special inspection vehicle for track inspection according to any one of claims 1 or 3, characterized in that: The power frame (31) comprises a connecting arm (311) fixedly arranged on the inspection vehicle body (1) and two wheel hub mounting plates (312) arranged on the connecting arm (311); the two wheel hub mounting plates (312) are rotatably connected to at least two running wheels (32) respectively; and the driving member (33) is arranged on the wheel hub mounting plates (312).

5. A special inspection vehicle for track inspection according to claim 4, characterized in that: The connecting arm (311) is fixedly provided with a load-bearing crossbeam (8), and the cross section of the load-bearing crossbeam (8) perpendicular to the wheel hub mounting plate (312) is trapezoidal.

6. A special inspection vehicle for track inspection according to claim 4, characterized in that: The two wheel hub mounting plates (312) are each provided with an assembly hole (9), the connecting arm (311) is simultaneously passed through the two assembly holes (9), and a damping spring component (10) for reducing shock to the inspection vehicle body (1) is detachably connected between the connecting arm (311) and the two wheel hub mounting plates (312).

7. A special inspection vehicle for track inspection according to claim 6, characterized in that: The hub mounting plate (312) is fixedly connected to a tray (11), the connecting arm (311) is located above the tray (11), and one end of the damping spring component (10) is fixed to the connecting arm (311) and the other end is fixed to the tray (11).

8. A special inspection vehicle for track inspection according to any one of claims 1 or 3, characterized in that: The inspection vehicle body (1) is provided with a hook head (121), and the hook head (121) is located at the front end and / or the rear end of the inspection vehicle body (1) in its own moving direction.

9. A special inspection vehicle for track inspection according to claim 8, characterized in that: An anti-dropping lock hook (13) is provided at the bend of the hook head (121).

10. A special inspection vehicle for track inspection according to claim 8, characterized in that: The hook head (121) is provided with a hook body (122), the hook body (122) is fixedly connected to a fixing plate (14), and the fixing plate (14) is bolted to the inspection vehicle body (1).

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