A pavement damage detection device for asphalt pavement maintenance

Abstract

The application discloses a road surface damage detection device for asphalt pavement maintenance and relates to the technical field of equipment detection, which comprises a whole assembly, wherein the whole assembly comprises a vehicle body, and a moving assembly is slidably connected in the vehicle body. The first motor drives the bidirectional screw rod to rotate, the moving connecting block is inwards retracted, the telescopic connecting rod is extended to drive the protective shell to move out of the vehicle body, when the vehicle body is running and the rear vehicle is too close, the infrared sensor is triggered to alarm, the first motor is reversed, the protective shell is inwards moved, the rear vehicle is prevented from colliding with the protective shell by accident, the detection device is prevented from being damaged, the protection effect of the device is effectively enhanced, the second motor drives the screw rod to rotate, the fixed block drives the telescopic connecting block to extend out of the fixed connecting block, the range of road surface detection is effectively enhanced, the applicability of the device is enhanced, and the working efficiency of the staff is further improved.

Description

Technical Field

[0001] This invention relates to the field of equipment testing technology, specifically to a road damage detection device for asphalt pavement maintenance. Background Technology

[0002] Asphalt pavement refers to various types of road surfaces constructed by incorporating road-grade asphalt into mineral materials. Asphalt binders enhance the ability of paving aggregates to resist damage from traffic and natural factors, resulting in a smooth, dust-free, impermeable, and durable surface. Therefore, asphalt pavement is one of the most widely used high-grade road surfaces in road construction.

[0003] Existing asphalt pavement damage detection devices are generally exposed behind vehicles during inspection. If an accident occurs during the inspection process and the vehicle is hit by a vehicle from behind, the detection device can easily be damaged if it is not protected in time. This can prevent the detection of damage to the asphalt pavement and affect the work efficiency of the staff.

[0004] Therefore, a pavement damage detection device for asphalt pavement maintenance is proposed. Summary of the Invention

[0005] Therefore, the purpose of this invention is to provide a pavement damage detection device for asphalt pavement maintenance, so as to solve the technical problems mentioned in the background above.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a road damage detection device for asphalt pavement maintenance, comprising an integral component, the integral component comprising a vehicle body, a movable component slidably connected inside the vehicle body, a detection component disposed inside the movable component, a wiping component disposed at the bottom of the detection component, and a cleaning component installed on one side of the detection component;

[0007] The moving component includes a first motor fixedly connected inside the vehicle body. A bidirectional threaded screw is fixedly connected to the output end of the first motor. Two sets of moving connecting blocks are rotatably connected to the surface of the bidirectional threaded screw. A telescopic connecting rod is fixedly connected to the top of the moving connecting block. A protective shell is welded to the end of the telescopic connecting rod away from the moving connecting block. Slider blocks are fixedly connected to both sides of the top of the protective shell. A moving block is welded to the lower end of the front and rear sides of the protective shell. An infrared sensor is installed on the side of the protective shell away from the telescopic connecting rod.

[0008] The detection assembly includes a second motor, the output end of which is fixedly connected to a threaded screw. A first round shaft is rotatably connected to the upper surface of the threaded screw. A connecting block is slidably connected to the surface of the first round shaft. Connecting rods are rotatably connected to both sides of the connecting block. A fixed block is rotatably connected to the end of the connecting rod away from the connecting block. A telescopic connecting block is welded to the bottom end of the fixed block. A fixed block is slidably connected to the surface of the telescopic connecting block. Multiple sets of detection probes are installed on one side of both the telescopic block and the fixed block.

[0009] As a preferred technical solution of the road damage detection device for asphalt pavement maintenance of the present invention, a guide groove is provided in the vehicle body, and the moving block is slidably connected to the vehicle body through the guide groove.

[0010] As a preferred technical solution of the pavement damage detection device for asphalt pavement maintenance of the present invention, the telescopic connecting rod is provided in two sets, and both sets of the telescopic connecting rod are fixedly connected to one side of the inner wall of the protective shell, and the slider is slidably connected to the vehicle body.

[0011] As a preferred technical solution of the pavement damage detection device for asphalt pavement maintenance of the present invention, a first rotating shaft is provided at the connection position between the connecting block and the connecting rod, and a second rotating shaft is provided at the connection position between the connecting rod and the fixing block.

[0012] As a preferred technical solution of the pavement damage detection device for asphalt pavement maintenance of the present invention, the second motor is fixedly connected to the bottom end of the fixed connecting block, and the threaded rod passes through the fixed connecting block.

[0013] As a preferred technical solution of the pavement damage detection device for asphalt pavement maintenance according to the present invention, the wiping component includes a rack fixedly connected to both sides of a telescopic connecting block. A meshing gear is provided on one side of the rack. A round rod is fixedly connected at the center of the gear. A round rod fixing plate is rotatably connected to the top of the round rod, and a second round shaft is rotatably connected inside the round rod. A rotating round rod is welded to the bottom end of the second round shaft. A third rotating shaft is provided on the surface of the round rod, penetrating the second round shaft. A first wiping connecting plate is fixedly connected to the lower end of the rotating round rod, and a bearing is installed at the bottom end of the rotating round rod. A second wiping connecting plate is fixedly connected to the bottom end of the bearing. A fixing rod is welded to one side of the second wiping connecting plate. An arc-shaped connecting block is welded to the side of the fixing rod away from the second wiping connecting plate. An L-shaped fixing rod is fixedly connected to the front end of the arc-shaped connecting block, and a rotating guide rod is slidably connected inside the arc-shaped connecting block. A third motor is provided at the end of the rotating guide rod away from the arc-shaped connecting block, and a support plate is fixedly connected to the end of the third motor away from the rotating guide rod.

[0014] As a preferred technical solution of the pavement damage detection device for asphalt pavement maintenance of the present invention, the top of the support plate is fixedly connected to the protective shell, and a fourth rotating shaft is welded to one side of the support plate, and the fourth rotating shaft is rotatably connected to the L-shaped fixing rod.

[0015] As a preferred technical solution of the pavement damage detection device for asphalt pavement maintenance of the present invention, the cleaning component includes a belt rotatably connected to the output end surface of a third motor. The inner wall of the belt is provided with a steering shaft to change its extension direction, and a fixed shaft is rotatably connected to the end of the inner wall of the belt away from the third motor. A disc is fixedly connected to one end of the fixed shaft, and a disc shaft is fixedly connected to the side of the disc away from the fixed shaft. A second movable block is slidably connected to the surface of the disc shaft. A piston rod is fixedly connected to the bottom end of the second movable block. A piston is welded to the bottom end of the piston rod. A telescopic piston is slidably connected to the surface of the piston. A telescopic piston cylinder is slidably connected to the surface of the telescopic piston. A piston cylinder is slidably connected to the surface of the telescopic piston cylinder, and an arc-shaped shaft is fixedly connected to both sides of the top end of the telescopic piston cylinder.

[0016] As a preferred technical solution of the pavement damage detection device for asphalt pavement maintenance of the present invention, the disc shaft is located on one side of the disc away from the center, the telescopic piston is magnetically connected and fixed to the telescopic piston cylinder, and the end of the arc-shaped shaft away from the telescopic piston cylinder is fixedly connected to the telescopic connecting block.

[0017] In summary, the present invention has the following main beneficial effects:

[0018] 1. This invention uses a first motor to drive a bidirectional threaded screw to rotate, causing the movable connecting block to retract inward and the telescopic connecting rod to extend, moving the protective shell out of the vehicle body. When the vehicle is in motion, if a vehicle behind gets too close, an infrared sensor triggers an alarm, causing the first motor to reverse and move the protective shell inward, preventing damage to the detection device from accidental collisions with the protective shell. This effectively enhances the protective effect of the device. A second motor drives the threaded screw to rotate, causing the fixed block to extend the telescopic connecting block from within the fixed connecting block, effectively increasing the range of road surface detection. This enhances the applicability of the device and further improves the work efficiency of the personnel.

[0019] 2. In this invention, the first wiping connecting plate rotates 180 degrees, and the third motor drives the rotating guide rod to rotate, so that the round rod rotates in a semi-circular arc through the third rotating shaft. The first wiping connecting plate and the second wiping connecting plate can reciprocate to clean the dust on the surface of the detection probe, so as to avoid the dust generated by the vehicle body when driving on the road adhering to the detection probe and affecting the detection effect of the detection probe.

[0020] 3. This invention, when the third motor is started, causes the telescopic piston cylinder to move out simultaneously under the action of magnetic attraction, driving the telescopic piston to move out synchronously. At the same time, the moving block two drives the piston rod to reciprocate. When the piston rod drives the piston and the telescopic piston downward, a blowing force is generated inside the piston cylinder and the telescopic piston cylinder, which blows away leaves and some plastic bags on the asphalt road surface to be tested. This effectively prevents the detection probe from being unable to detect in time due to obstruction by leaves and plastic bags, effectively enhancing the completeness of the detection and improving the accuracy of road surface detection. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall components of the present invention;

[0022] Figure 2 This is a schematic diagram of the moving component of the present invention;

[0023] Figure 3 This is a schematic diagram of the interior of the protective casing of the present invention;

[0024] Figure 4 This is a schematic diagram of the detection component of the present invention;

[0025] Figure 5 For the present invention Figure 5 Enlarged view of point A in the middle;

[0026] Figure 6 This is a schematic diagram of the erasing component of the present invention;

[0027] Figure 7 This is a cross-sectional view of the circular rod of the present invention;

[0028] Figure 8 This is a schematic diagram of the cleaning component of the present invention;

[0029] Figure 9 This is a cross-sectional view of the piston cylinder of the present invention.

[0030] In the diagram: 100, overall component; 110, vehicle body; 111, guide chute;

[0031] 200. Moving component; 210. First motor; 220. Bidirectional threaded screw; 230. Moving connecting block; 240. Telescopic connecting rod; 250. Protective housing; 260. Slider; 270. Moving block one; 280. Infrared sensor;

[0032] 300. Detection component; 310. Second motor; 320. Threaded screw; 330. First round shaft; 340. Connecting block; 350. Connecting rod; 351. First rotating shaft; 360. Fixing block; 361. Second rotating shaft; 370. Telescopic connecting block; 380. Fixed connecting block; 390. Detection probe;

[0033] 400. Wiping assembly; 410. Rack; 420. Gear; 430. Round rod; 431. Round rod fixing plate; 440. Rotating round rod; 441. Second round shaft; 442. Third rotating shaft; 450. First wiping connecting plate; 460. Bearing; 470. Second wiping connecting plate; 480. Fixing rod; 490. Arc-shaped connecting block; 491. L-shaped fixing rod; 492. Fourth rotating shaft; 4910. Rotating guide rod; 4920. Third motor; 4930. Support plate;

[0034] 500. Cleaning component; 510. Belt; 511. Steering shaft; 520. Fixed shaft; 530. Disc; 531. Disc shaft; 540. Moving block two; 550. Piston rod; 560. Piston; 570. Telescopic piston; 580. Telescopic piston cylinder; 590. Piston cylinder; 5910. Arc shaft. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] The embodiments of the present invention will now be described.

[0037] A pavement damage detection device for asphalt pavement maintenance, such as Figure 1-9 As shown, the system includes an overall component 100, which includes a vehicle body 110. A movable component 200 is slidably connected inside the vehicle body 110. A detection component 300 is provided inside the movable component 200. A wiping component 400 is provided at the bottom of the detection component 300, and a cleaning component 500 is installed on one side of the detection component 300.

[0038] The mobile component 200 includes a first motor 210 fixedly connected inside the vehicle body 110. A bidirectional threaded screw 220 is fixedly connected to the output end of the first motor 210. Two sets of movable connecting blocks 230 are rotatably connected to the surface of the bidirectional threaded screw 220. A telescopic connecting rod 240 is fixedly connected to the top of the movable connecting block 230. A protective shell 250 is welded to the end of the telescopic connecting rod 240 away from the movable connecting block 230. Slider blocks 260 are fixedly connected to both sides of the top of the protective shell 250. Movable blocks 270 are welded to the lower ends of the front and rear sides of the protective shell 250. An infrared sensor 280 is installed on the side of the protective shell 250 away from the telescopic connecting rod 240.

[0039] The detection assembly 300 includes a second motor 310. A threaded screw 320 is fixedly connected to the output end of the second motor 310. A first round shaft 330 is rotatably connected to the upper surface of the threaded screw 320. A connecting block 340 is slidably connected to the surface of the first round shaft 330. Connecting rods 350 are rotatably connected to both sides of the connecting block 340. A fixing block 360 is rotatably connected to the end of the connecting rod 350 away from the connecting block 340. A telescopic connecting block 370 is welded to the bottom end of the fixing block 360. A fixed connecting block 380 is slidably connected to the surface of the telescopic connecting block 370. Multiple sets of detection probes 390 are installed on one side of both the telescopic connecting block 370 and the fixed connecting block 380.

[0040] When inspecting damaged areas on asphalt pavement, workers drive vehicle 110 across the road, starting the first motor 210, which rotates the double-threaded screw 220. The double-threaded screw 220 causes the movable connecting block 230 to retract inward, extending the telescopic connecting rod 240 and moving the protective housing 250 out of vehicle 110. When vehicle 110 is moving and a vehicle behind is too close, an infrared sensor 280 triggers an alarm, causing the first motor 210 to reverse and move the protective housing 250 inward. This prevents vehicles behind from accidentally colliding with the protective housing 250 and damaging the detection device, effectively enhancing the protection of the device. Vehicle 110 continues to operate normally. When the device is in operation, the second motor 310 is started, which drives the threaded screw 320 to rotate. The threaded screw 320 drives the first round shaft 330 to move downward. At the same time, the first round shaft 330 drives the connecting block 340 to move synchronously. Under the action of the first rotating shaft 351 and the second rotating shaft 361, the fixed block 360 drives the telescopic connecting block 370 to extend out from the inside of the fixed connecting block 380, which effectively increases the range of road surface detection, enhances the applicability of the device, and further improves the work efficiency of the staff. Then, the detection probe 390 is used to detect the damaged parts of the asphalt pavement. When road surface damage is detected, the detection probe 390 records the location of the road surface damage in real time, which is convenient for subsequent staff to repair.

[0041] Please refer to this carefully. Figure 1 and Figure 2 The vehicle body 110 has a guide groove 111 inside. The moving block 270 is slidably connected to the vehicle body 110 through the guide groove 111. There are two sets of telescopic connecting rods 240. Both sets of telescopic connecting rods 240 are fixedly connected to one side of the inner wall of the protective shell 250. The slider 260 is slidably connected to the vehicle body 110.

[0042] The guide groove 111 facilitates the movement of the protective shell 250, and the two sets of telescopic connecting rods 240 effectively ensure the stability of the protective shell 250 during movement.

[0043] Please refer to this carefully. Figure 3 , Figure 4 and Figure 5 A first rotating shaft 351 is provided at the connection position between the connecting block 340 and the connecting rod 350, and a second rotating shaft 361 is provided at the connection position between the connecting rod 350 and the fixing block 360. The second motor 310 is fixedly connected to the bottom end of the fixed connecting block 380, and the threaded screw 320 passes through the fixed connecting block 380.

[0044] By setting the first rotating shaft 351 and the second rotating shaft 361, the telescopic connecting block 370 can be effectively moved out.

[0045] Please refer to this carefully. Figure 6 and Figure 7 The wiping assembly 400 includes racks 410 fixedly connected to both sides of the telescopic connecting block 370. A meshing gear 420 is provided on one side of the racks 410. A round rod 430 is fixedly connected to the center of the gear 420. A round rod fixing plate 431 is rotatably connected to the top of the round rod 430, and a second round shaft 441 is rotatably connected inside the round rod 430. A rotating round rod 440 is welded to the bottom of the second round shaft 441. A third rotating shaft 442 is provided on the surface of the round rod 430, passing through the second round shaft 441. A first wiping connecting plate 450 is fixedly connected to the lower end of the rotating round rod 440, and a bearing 460 is installed at the bottom of the rotating round rod 440. A second wiping connecting plate 470 is fixedly connected to the bottom of the bearing 460. A fixing rod 480 is welded to one side of the wiping connecting plate 470. An arc-shaped connecting block 490 is welded to the side of the fixing rod 480 away from the second wiping connecting plate 470. An L-shaped fixing rod 491 is fixedly connected to the front end of the arc-shaped connecting block 490. A rotating guide rod 4910 is slidably connected inside the arc-shaped connecting block 490. A third motor 4920 is provided at the end of the rotating guide rod 4910 away from the arc-shaped connecting block 490. A support plate 4930 is fixedly connected to the end of the third motor 4920 away from the rotating guide rod 4910. The top of the support plate 4930 is fixedly connected to the protective shell 250. A fourth rotating shaft 492 is welded to one side of the support plate 4930. The fourth rotating shaft 492 is rotatably connected to the L-shaped fixing rod 491.

[0046] While the telescopic connecting block 370 moves, it drives the rack 410 to move. The rack 410 drives the gear 420 to rotate. The gear 420 drives the round rod 430 and the rotating round rod 440 to rotate synchronously. The rotating round rod 440 drives the first wiping connecting plate 450 to rotate synchronously by 180 degrees. The third motor 4920 is started to drive the rotating guide rod 4910 to rotate. The rotating guide rod 4910 drives the arc-shaped connecting block 490 to rotate while sliding. The arc-shaped connecting block 490 drives the second wiping connecting plate 470 to rotate through the fixed rod 480. The second wiping connecting plate 470 drives the rotating round rod 440 to rotate. The rotating round rod 440 rotates in a semi-circular arc through the third rotating shaft 442, so that the first wiping connecting plate 450 and the second wiping connecting plate 470 can reciprocate to clean the dust on the surface of the detection probe 390, so as to prevent the dust generated by the vehicle body 110 when driving on the road from adhering to the detection probe 390 and affecting the detection effect of the detection probe 390.

[0047] Please refer to this carefully. Figure 8 and Figure 9 The cleaning assembly 500 includes a belt 510 rotatably connected to the output surface of a third motor 4920. The inner wall of the belt 510 is provided with a steering shaft 511 to change its extension direction. A fixed shaft 520 is rotatably connected to the end of the inner wall of the belt 510 away from the third motor 4920. A disc 530 is fixedly connected to one end of the fixed shaft 520. A disc shaft 531 is fixedly connected to the side of the disc 530 away from the fixed shaft 520. A second movable block 540 is slidably connected to the surface of the disc shaft 531. A piston rod 550 is fixedly connected to the bottom end of the second movable block 540. A piston 560 is welded to the bottom of 50. A telescopic piston 570 is slidably connected to the surface of the piston 560. A telescopic piston cylinder 580 is slidably connected to the surface of the telescopic piston 570. A piston cylinder 590 is slidably connected to the surface of the telescopic piston cylinder 580. An arc-shaped shaft 5910 is fixedly connected to both sides of the top of the telescopic piston cylinder 580. A disc shaft 531 is located on one side of the disc 530 away from the center. The telescopic piston 570 and the telescopic piston cylinder 580 are magnetically connected and fixed. The end of the arc-shaped shaft 5910 away from the telescopic piston cylinder 580 is fixedly connected to the telescopic connecting block 370.

[0048] When the third motor 4920 starts, it drives the belt 510 to rotate. The belt 510 drives the fixed shaft 520 to rotate, and the fixed shaft 520 drives the disc 530 and the disc shaft 531 to rotate synchronously. This causes the disc shaft 531 to drive the second moving block 540 to move back and forth. At the same time, the telescopic connecting block 370 moves out, and the telescopic piston cylinder 580 moves out synchronously through the arc shaft 5910. The telescopic piston cylinder 580 moves out, and under the action of magnetic attraction, it drives the telescopic piston 570 to move out synchronously. At the same time, the second moving block 540 drives the piston rod 550 to move back and forth. The piston rod 550 drives the piston 560 and the telescopic piston 570 downward, so that the piston cylinder 590 and the telescopic piston cylinder 580 generate blowing force. This blows away the leaves and plastic bags on the asphalt pavement to be tested, effectively preventing the detection probe 390 from being unable to detect in time due to the obstruction of leaves and plastic bags. This effectively enhances the completeness of the detection and improves the accuracy of the pavement detection.

[0049] When inspecting damaged areas on asphalt pavements, workers drive vehicle 110 across the road, activating the first motor 210. This motor rotates the bidirectional threaded screw 220, causing the movable connecting block 230 to retract inward. This extends the telescopic connecting rod 240, moving the protective housing 250 out of vehicle 110. If a vehicle is too close behind while vehicle 110 is in motion, an infrared sensor 280 triggers an alarm, causing the first motor 210 to reverse and move the protective housing 250 inward. This prevents accidental collisions with the protective housing 250 and damage to the detection device, effectively enhancing its protection. During normal operation, the second motor 310 is activated. The screw 320 rotates, causing the first round shaft 330 to move downwards. Simultaneously, the first round shaft 330 moves the connecting block 340, and through the action of the first rotating shaft 351 and the second rotating shaft 361, the fixed block 360 causes the telescopic connecting block 370 to extend from inside the fixed connecting block 380. This effectively expands the road surface detection range, enhances the applicability of the device, and further improves the work efficiency of the staff. The detection probe 390 then detects damage to the asphalt pavement. When damage is detected, the detection probe 390 records the location of the damage in real time, facilitating subsequent repairs. Simultaneously, the telescopic connecting block 370 moves, causing the rack 410 to move. The rack 410... The rotating gear 420 rotates, causing the round rod 430 and the rotating round rod 440 to rotate synchronously. The rotating round rod 440 causes the first wiping connecting plate 450 to rotate synchronously by 180 degrees. The third motor 4920 is started, causing the rotating guide rod 4910 to rotate. The rotating guide rod 4910 drives the arc-shaped connecting block 490 to rotate while sliding. The arc-shaped connecting block 490 drives the second wiping connecting plate 470 to rotate via the fixed rod 480. The second wiping connecting plate 470 drives the rotating round rod 440 to rotate. The rotating round rod 440 rotates in a semi-circular arc via the third rotating shaft 442, so that the first wiping connecting plate 450 and the second wiping connecting plate 470 can reciprocate to clean the dust on the surface of the detection probe 390, avoiding dust accumulation on the vehicle body 1. 10. Dust generated during road travel adheres to the detection probe 390, affecting its detection effect. Simultaneously, the third motor 4920 starts, driving the belt 510 to rotate. The belt 510 drives the fixed shaft 520 to rotate, which in turn drives the disc 530 and disc shaft 531 to rotate synchronously. This causes the disc shaft 531 to drive the second moving block 540 to reciprocate up and down. As the telescopic connecting block 370 moves out, it simultaneously drives the telescopic piston cylinder 580 to move out synchronously via the arc-shaped shaft 5910. The telescopic piston cylinder 580, under magnetic attraction, drives the telescopic piston 570 to move out synchronously. At the same time, the second moving block 540 drives the piston rod 550 to reciprocate, causing the piston rod 550 to drive the piston 560 and the telescopic piston 570 downwards.The piston cylinder 590 and telescopic piston cylinder 580 generate a blowing force inside, which agitates leaves and plastic bags on the asphalt pavement to be inspected. This effectively prevents the detection probe 390 from being unable to detect the pavement in a timely manner due to obstruction by leaves and plastic bags, thus significantly improving the completeness and accuracy of the inspection. Any parts of this device not described herein are the same as or can be implemented using existing technologies.

[0050] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A pavement damage detection device for asphalt pavement maintenance, comprising an integral component (100), characterized in that: The overall component (100) includes a vehicle body (110), a movable component (200) is slidably connected inside the vehicle body (110), a detection component (300) is provided inside the movable component (200), a wiping component (400) is provided at the bottom of the detection component (300), and a cleaning component (500) is installed on one side of the detection component (300). The moving component (200) includes a first motor (210) fixedly connected inside the vehicle body (110). A bidirectional threaded screw (220) is fixedly connected to the output end of the first motor (210). Two sets of moving connecting blocks (230) are rotatably connected to the surface of the bidirectional threaded screw (220). A telescopic connecting rod (240) is fixedly connected to the top of the moving connecting block (230). A protective shell (250) is welded to the end of the telescopic connecting rod (240) away from the moving connecting block (230). Slider blocks (260) are fixedly connected to both sides of the top of the protective shell (250). A moving block (270) is welded to the lower end of the front and rear sides of the protective shell (250). An infrared sensor (280) is installed on the side of the protective shell (250) away from the telescopic connecting rod (240). The detection component (300) includes a second motor (310), the output end of which is fixedly connected to a threaded screw (320). A first round shaft (330) is rotatably connected to the upper surface of the threaded screw (320). A connecting block (340) is slidably connected to the surface of the first round shaft (330). Connecting rods (350) are rotatably connected to both sides of the connecting block (340). A fixing block (360) is rotatably connected to the end of the connecting rod (350) away from the connecting block (340). A telescopic connecting block (370) is welded to the bottom end of the fixing block (360). A fixed connecting block (380) is slidably connected to the surface of the telescopic connecting block (370). Multiple sets of detection probes (390) are installed on one side of both the telescopic connecting block (370) and the fixed connecting block (380). The wiping assembly (400) includes a rack (410) fixedly connected to both sides of the telescopic connecting block (370). A meshing gear (420) is provided on one side of the rack (410). A round rod (430) is fixedly connected to the center of the gear (420). A round rod fixing plate (431) is rotatably connected to the top of the round rod (430), and a second round shaft (441) is rotatably connected inside the round rod (430). A rotating round rod (440) is welded to the bottom of the second round shaft (441). A third rotating shaft (442) penetrating the second round shaft (441) is provided on the surface of the round rod (430). A first wiping connecting plate (450) is fixedly connected to the lower end of the rotating round rod (440), and a bearing (460) is installed at the bottom of the rotating round rod (440). A second wiping connecting plate (470) is fixedly connected to the bottom of the bearing (460). A fixing rod (480) is welded to one side of the second wiping connecting plate (470). An arc-shaped connecting block (490) is welded to the side of the fixing rod (480) away from the second wiping connecting plate (470). An L-shaped fixing rod (491) is fixedly connected to the front end of the arc-shaped connecting block (490). A rotating guide rod (4910) is slidably connected inside the arc-shaped connecting block (490). A third motor (4920) is provided at the end of the rotating guide rod (4910) away from the arc-shaped connecting block (490). A support plate (4930) is fixedly connected to the end of the third motor (4920) away from the rotating guide rod (4910). The top of the support plate (4930) is fixedly connected to the protective shell (250). A fourth rotating shaft (492) is welded to one side of the support plate (4930). The fourth rotating shaft (492) is rotatably connected to the L-shaped fixing rod (491).

2. The pavement distress detection device for asphalt pavement maintenance of claim 1, wherein: The vehicle body (110) is provided with a guide groove (111), and the moving block (270) is slidably connected to the vehicle body (110) through the guide groove (111).

3. The pavement distress detection device for asphalt pavement maintenance of claim 1, wherein: The telescopic connecting rod (240) is provided in two sets. Both sets of the telescopic connecting rod (240) are fixedly connected to one side of the inner wall of the protective shell (250). The slider (260) is slidably connected to the vehicle body (110).

4. The pavement distress detection device for asphalt pavement maintenance of claim 1, wherein: A first rotating shaft (351) is provided at the connection position between the connecting block (340) and the connecting rod (350), and a second rotating shaft (361) is provided at the connection position between the connecting rod (350) and the fixing block (360).

5. The pavement distress detection device for asphalt pavement maintenance of claim 1, wherein: The second motor (310) is fixedly connected to the bottom end of the fixed connecting block (380), and the threaded screw (320) passes through the fixed connecting block (380).

6. The pavement distress detection device for asphalt pavement maintenance of claim 1, wherein: The cleaning assembly (500) includes a belt (510) rotatably connected to the output surface of a third motor (4920). The inner wall of the belt (510) is provided with a steering shaft (511) to change its extension direction. A fixed shaft (520) is rotatably connected to one end of the inner wall of the belt (510) away from the third motor (4920). A disc (530) is fixedly connected to one end of the fixed shaft (520), and a disc shaft (531) is fixedly connected to the side of the disc (530) away from the fixed shaft (520). A movable block two (540) is slidably connected to the surface of the movable block two (540), a piston rod (550) is fixedly connected to the bottom end of the movable block two (540), a piston (560) is welded to the bottom end of the piston rod (550), a telescopic piston (570) is slidably connected to the surface of the piston (560), a telescopic piston cylinder (580) is slidably connected to the surface of the telescopic piston cylinder (570), a piston cylinder (590) is slidably connected to the surface of the telescopic piston cylinder (580), and an arc-shaped shaft (5910) is fixedly connected to both sides of the top end of the telescopic piston cylinder (580).

7. The pavement distress detection device for asphalt pavement maintenance of claim 6, wherein: The disc shaft (531) is located on one side of the disc (530) away from the center. The telescopic piston (570) is magnetically connected and fixed to the telescopic piston cylinder (580). The end of the arc-shaped shaft (5910) away from the telescopic piston cylinder (580) is fixedly connected to the telescopic connecting block (370).

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