Rapid pavement marking cracking detection device

Abstract

The invention provides a pavement marking cracking rapid detection device, and belongs to the technical field of road detection.The pavement marking cracking rapid detection device comprises a functional vehicle, a hydraulic telescopic mechanism, a detection mechanism and a warning mechanism, the detection mechanism comprises a connecting assembly, a control assembly, a fixing assembly, a working assembly and a display assembly, the control assembly is arranged on the connecting assembly, the fixing assembly is arranged on the control assembly, and the working assembly is arranged on the working assembly; the working assembly is arranged below the connecting assembly, and the display assembly is arranged in a compartment of the functional vehicle; the control assembly comprises a protective shell, a controller and a starting power supply are arranged in the protective shell, and the starting power supply is electrically connected with the controller; the working assembly comprises a fixed block and a motor I, a rotating screw rod and a movable block are arranged between the fixed block and the motor I, a measuring head is arranged at the lower part of the movable block, and the motor I and the measuring head are electrically connected with the controller; the warning assembly comprises a mounting base, a plurality of second motors, a loudspeaker and a plurality of warning lamps are arranged on the upper portion of the mounting base, and the second motors, the loudspeaker and the warning lamps are electrically connected with the controller.

Description

Technical Field

[0001] The invention relates to the technical field of road detection, and in particular to a device for quickly detecting cracks in road markings. Background Art

[0002] Road traffic markings are traffic safety facilities consisting of various lines, arrows, texts, elevation marks, raised road signs and contour marks marked on the road surface. They convey traffic information such as guidance, restriction and warning to traffic participants. They are white or yellow in color. The function of road traffic markings is to convey standardized information and to control and guide traffic. They can be used in conjunction with signs or alone, and play an important role in modern road traffic management. Correctly identifying and implementing road traffic markings is of great significance to improving road capacity, improving traffic conditions, reducing traffic accidents, and protecting vehicle and personal safety.

[0003] In the prior art, when detecting cracks in road markings, the location of the cracks in the markings is often determined by video or visual observation, and then the cracks are detected by manual handheld detection instruments. Although the cracks on the surface of the markings can be detected, it is impossible to determine whether the cracks are in the markings or in the deeper layers of the road below the markings. At the same time, the manual work method is time-consuming and labor-intensive, with low work efficiency, and it is impossible to remind the front and rear vehicles during work. The personal safety of the staff cannot be guaranteed, and improvement is needed. In view of this, we propose a crack detection device for road markings. Summary of the invention

[0004] The purpose of the present invention is to provide a rapid detection device for cracks in road markings to solve the technical problem of low efficiency of existing manual detection. The present invention can quickly detect whether the road marking is cracked or the road below the marking is cracked in the deep layer, with high automation and detection efficiency. It can also remind vehicles in front and behind to ensure the personal safety of the staff.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A road marking crack rapid detection device comprises a functional vehicle, a hydraulic telescopic mechanism, a detection mechanism and a warning mechanism, wherein the warning mechanism is arranged on the rear end of the functional vehicle, the hydraulic telescopic mechanism is respectively arranged on both sides of the bottom of the front end of the functional vehicle, and the detection mechanism is arranged on one end of the hydraulic telescopic mechanism;

[0007] The detection mechanism includes a connecting component, a control component, a fixing component, a working component and a display component, wherein the control component is arranged on the connecting component, the fixing component is arranged on the control component, the working component is arranged below the connecting component, and the display component is arranged inside the compartment of the functional vehicle;

[0008] The control component includes a protective shell, a controller and a starting power supply are arranged inside the protective shell, and the starting power supply is electrically connected to the controller;

[0009] The working assembly includes a fixed block and a motor 1, a rotating screw and a movable block are arranged between the fixed block and the motor 1, a probe is arranged at the lower part of the movable block, and the motor 1 and the detection head are electrically connected to the controller;

[0010] The warning component comprises a mounting base, and a plurality of motors 2, a sound system and a plurality of warning lights are arranged on the upper part of the mounting base. The motors 2, the sound system and the warning lights are electrically connected to the controller.

[0011] Furthermore, the hydraulic telescopic mechanism includes a telescopic frame and two hydraulic cylinders, one end of the telescopic frame and the hydraulic cylinder are respectively connected to the bottom of the functional vehicle, and the other end of the hydraulic cylinder is connected to the telescopic frame.

[0012] Furthermore, the connecting assembly includes a base, the base is connected to one end of the telescopic frame, and an upper mounting frame and a lower mounting frame are arranged on the upper part of the base.

[0013] Furthermore, the protective shell is connected to the base, an interface groove is provided on the back of the protective shell, a plurality of interface waterproof plates are provided on the upper part of the interface groove, and an inclination angle between the interface waterproof plate and the protective shell is °.

[0014] Furthermore, a heat dissipation window is provided on the left side of the protective shell, a plurality of heat dissipation waterproof plates are provided in the middle of the heat dissipation window, the inclination angle of the heat dissipation waterproof plates is °, a partition is provided between the controller and the starting power supply, a cover plate is provided on the right side of the protective shell, and a plurality of locking knobs are provided on the right end of the cover plate.

[0015] Furthermore, the fixing assembly includes a large pad, a small pad and a spring, a plurality of large pads are arranged on the upper part of the controller, springs are arranged between the plurality of large pads, a plurality of small pads are arranged on the upper part of the starting power supply, and springs are arranged between the plurality of small pads.

[0016] Furthermore, the fixed block and the motor 1 are arranged at the lower part of the base, one end of the rotating screw rod passes through the plurality of movable blocks and the fixed block, and the other end of the rotating screw rod is connected to the output end of the motor 1.

[0017] Furthermore, the mounting base is connected to the functional vehicle, a plurality of mounting blocks are arranged on the upper portion of the mounting base, a connecting rod is arranged between the warning light and the mounting block, and the second output end of the motor is connected to the connecting rod through an axle rod penetrating the mounting block.

[0018] Furthermore, the display assembly includes a display screen, a fixed base and a connecting column, the fixed base is connected to the functional vehicle, the display screen is connected to the fixed base through the connecting column, and the display screen is electrically connected to the controller.

[0019] Furthermore, the materials of the large pad and the small pad are both nitrile rubber, and the heat dissipation and waterproof plate is a plastic hollow plate made of ethylene.

[0020] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0021] 1. The present invention arranges a telescopic mechanism on the functional vehicle. When the detection mechanism is working, the hydraulic cylinder and the telescopic frame are controlled to extend the detection mechanism from the bottom of the functional vehicle chassis to both sides, so that the detection mechanism is above the road marking line. The detection mechanisms on both sides simultaneously detect the cracking of the road marking line, thereby speeding up the detection. Automation replaces manual detection, and the detection efficiency is high.

[0022] 2. The present invention protects and controls the main device through a protective shell, a controller and a starting power supply, and then fixes the control component through a large pad, a spring and a small pad. Next, the road surface crack detection can be performed through the detection head, the movable block, the motor one, the rotating screw and the fixed block. At the same time, the rear vehicle can be warned through the installation base, the motor two, the sound and the warning light. Then, the device functions and images are displayed through the display screen and the fixed base. Finally, the whole device is moved through the functional vehicle.

[0023] 3. The structural design of the present invention is compact and reasonable, with high detection efficiency and good detection effect. It can automatically detect the road markings on both sides at the same time when the functional vehicle is moving, speed up the detection, thereby improving work efficiency, and at the same time provide a warning effect to the vehicles coming and going from behind to ensure the personal safety of the staff. In addition, the overall depth of the cracks can be detected by laser radar to confirm the cause of the cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a top view of the detection device of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the hydraulic telescopic mechanism of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the detection mechanism of the present invention

[0027] Figure 4 is a cross-sectional view of the detection mechanism of the present invention;

[0028] Figure 5 It is a schematic diagram of the back side of the detection mechanism of the present invention;

[0029] Figure 6 is a schematic diagram of the structure of the warning component of the present invention;

[0030] Figure 7 is a top view of the warning component of the present invention;

[0031] Figure 8 It is a schematic diagram of the structure of the display assembly of the present invention.

[0032] In the attached drawings, 100, connecting assembly; 101, base; 102, upper mounting frame; 103, lower mounting frame; 104, interface waterproof plate; 105, interface slot; 200, control assembly; 201, protective shell; 202, heat dissipation window; 203, heat dissipation waterproof plate; 204, controller; 205, start power supply; 206, cover plate; 207, locking knob; 208, partition; 300, fixing assembly; 301, large pad; 302, spring; 303, small pad; 400, working assembly; 401 , fixed block; 402, motor one; 403, rotating screw; 404, movable block; 405, detection head; 500, warning mechanism; 501, mounting base; 502, motor two; 503, sound; 504, mounting block; 505, connecting rod; 506, warning light; 600, display component; 601, display screen; 602, connecting column; 603, fixed base; 700, functional vehicle; 800, hydraulic telescopic mechanism; 801, telescopic frame; 802, two hydraulic cylinders, 900- detection mechanism. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling the reader to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0034] like Figure 1-8As shown, the road marking crack rapid detection device includes a functional vehicle 700, a hydraulic telescopic mechanism 800, a detection mechanism 900 and a warning mechanism 500. The warning mechanism 500 is arranged on the rear end of the functional vehicle 700. The warning component 500 can effectively perform the warning work. The hydraulic telescopic mechanism 800 is respectively arranged on both sides of the bottom of the front end of the functional vehicle 700. The detection mechanism 900 is arranged on one end of the hydraulic telescopic mechanism 800. The detection mechanism 900 is connected to the hydraulic telescopic mechanism 800 by bolts, and controls the hydraulic telescopic mechanism 800 to move to both sides of the functional vehicle 700. The detection mechanism 900 is telescopically extended to ensure that the detection work of the detection mechanism 900 is carried out smoothly, and the whole device is moved through the functional vehicle; the detection mechanism 900 includes a connecting component 100, a control component 200, a fixing component 300, a working component 400 and a display component 600, the control component 200 is arranged on the connecting component 100, the fixing component 300 is arranged on the control component 200, the working component 400 is arranged below the connecting component 100, and the display component 600 is arranged inside the compartment of the functional vehicle 700; the control component 200 includes a protective shell 201, a protective shell 202, and a protective shell 203. 01 is provided with a controller 204 and a starting power supply 205, the starting power supply 205 is electrically connected to the controller 204, and the main device is protected and controlled by the protective shell, the controller and the starting power supply; the working component 400 includes a fixed block 401 and a motor 1 402, a rotating screw 403 and a movable block 404 are provided between the fixed block 401 and the motor 1 402, and a probe 405 is provided at the lower part of the movable block 404, and the road surface can be cracked by the detection head, the movable block, the motor 1, the rotating screw and the fixed block, and the motor 1 402 and the detection head 403 are provided. 05 is electrically connected to the controller 204, and the controller 204 controls the motor 1 402 and the detection head 405; the warning component 500 includes a mounting base 501, and a plurality of motors 2 502, a sound 503 and a plurality of warning lights 506 are arranged on the upper part of the mounting base 501. The motors 2 502, the sound 503 and the warning lights 506 are electrically connected to the controller 204, and the motors 2 502, the sound 503 and the warning lights 506 are controlled by the controller 204. The mounting base, the motor 2, the sound and the warning lights can warn the rear vehicles. The structural design of the present invention is compact and reasonable, the detection efficiency is high, and the detection effect is good. When the functional vehicle moves, the road markings on both sides can be automatically detected at the same time, which speeds up the detection and improves the work efficiency. At the same time, it warns the vehicles coming and going from behind to ensure the personal safety of the staff, and the overall depth of the crack can be detected by the laser radar to confirm the cause of the crack.

[0035] like Figure 2As shown, the hydraulic telescopic mechanism 800 includes a telescopic frame 801 and two hydraulic cylinders 802. One end of the telescopic frame 801 and the hydraulic cylinder 802 are respectively connected to the bottom of the functional vehicle 700, and the other end of the hydraulic cylinder 802 is connected to the telescopic frame 801. The hydraulic cylinder 802 is electrically connected to the controller 204. When the detection work is performed, the controller 204 controls the extension of the hydraulic cylinder 802, and the telescopic frame 801 moves the detection mechanism 900 above the road marking to ensure that the detection work is carried out smoothly; when there is no detection work, the controller 204 controls the contraction of the hydraulic cylinder 802, and the telescopic frame 801 retracts the detection mechanism 900 to both sides of the functional vehicle without occupying too much space. The present invention sets a telescopic mechanism on the functional vehicle. When the detection mechanism works, the hydraulic cylinder and the telescopic frame are controlled to extend the detection mechanism from the bottom of the functional vehicle chassis to both sides, so that the detection mechanism is above the road marking. The detection mechanisms on both sides simultaneously detect the cracking of the road marking, speed up the detection, and replace manual detection with automation, so that the detection efficiency is high.

[0036] like Figure 3 As shown, the connection assembly 100 includes a base 101, which is connected to one end of the telescopic frame 801. The base 101 is connected to the telescopic frame 801 by bolts to ensure a stable connection between the base 101 and the telescopic frame 801. An upper mounting frame 102 and a lower mounting frame 103 are provided on the upper part of the base 101. The protective shell 201 is connected to the base 101, and an interface groove 105 is provided on the back of the protective shell 201. A plurality of interface waterproof plates 104 are provided on the upper part of the interface groove 105. The interface waterproof plates 104 and the protective shell 201 are inclined at an angle of 45° to ensure that when the protective shell 201 is exposed to water, water does not enter the interior of the protective shell 201.

[0037] like Figure 4 As shown, a heat dissipation window 202 is provided on the left side of the protective shell 201, and a plurality of heat dissipation waterproof plates 203 are provided in the middle of the heat dissipation window 202. The inclination angle of the heat dissipation waterproof plates 203 is 45°. A partition 208 is provided between the controller 204 and the starting power supply 205. A cover plate 206 is provided on the right side of the protective shell 201. A plurality of locking knobs 207 are provided on the right end of the cover plate 206 to ensure that the controller 204 can effectively dissipate heat during operation. When heat is dissipated through the heat dissipation window 202, water will not enter the interior of the protective shell 201 through the heat dissipation window 202. The controller 204 can be separated from the starting power supply 205, and the cover plate 206 can be locked on the upper part of the protective shell 201.

[0038] In the present invention, the fixing component 300 includes a large pad 301, a small pad 303 and a spring 302. The control component can be fixed by the large pad, the spring and the small pad. Multiple large pads 301 are arranged on the upper part of the controller 204, and springs 302 are arranged between the multiple large pads 301. Multiple small pads 303 are arranged on the upper part of the starting power supply 205, and springs 302 are arranged between the multiple small pads 303, to ensure that the controller 204 and the starting power supply 205 can be firmly fixed when the cover 206 is closed.

[0039] like Figure 5 As shown, the fixed block 401 and the motor 1 402 are arranged at the lower part of the base 101, one end of the rotating screw 403 passes through multiple movable blocks 404 and the fixed block 401, and the other end of the rotating screw 403 is connected to the output end of the motor 1 402, ensuring that the multiple movable blocks 404 on the rotating screw 403 can move toward the middle at the same time, and the motor 1 402 can drive the rotating screw 403 to rotate.

[0040] like Figure 6-7 As shown, the mounting base 501 is connected to the functional vehicle 700, a plurality of mounting blocks 504 are arranged on the upper portion of the mounting base 501, a connecting rod 505 is arranged between the warning light 506 and the mounting block 504, and the output end of the motor 2 502 is connected to the connecting rod 505 through an axis rod penetrating the mounting block 504, thereby ensuring that the warning light 506 can be connected to the motor 2 502, and the warning light 505 can be driven upright by the motor 2 502.

[0041] like Figure 8 As shown, the display assembly 600 includes a display screen 601, a fixed base 603 and a connecting column 602. The fixed base 603 is connected to the functional vehicle 700. The display screen 601 is connected to the fixed base 603 through the connecting column 602 to ensure that the display screen 601 is stably connected to the functional vehicle 700. The display screen 601 is electrically connected to the controller 204, and the device functions and images are displayed through the display screen and the fixed base.

[0042] In some cases, the large pad 301 and the small pad 303 are both made of nitrile rubber, and the heat dissipation waterproof plate 203 is a plastic hollow plate made of ethylene, which can ensure that the large pad 301 and the small pad 303 can be fixed, and the heat dissipation waterproof plate 203 can effectively waterproof.

[0043] In the present invention, the controller 204 is connected to the network through the intelligent gateway HiWooBox, and the real-time image storage and transmission are realized through the network. The Beidou positioning can be performed through the vehicle-mounted GPS of the running vehicle to realize the real-time monitoring of the working distance;

[0044] Embodiment 1: Use this device to move to a suitable position, and control the hydraulic cylinder 802 to move the detection mechanism 900 on both sides of the functional vehicle 700 to the top of the road marking, and rotate the locking knob 207 to fix it. Then, the display screen 601 is used to control the motor 1 402 to start, and the motor 1 402 drives the rotating screw 403 to rotate, and adjust the distance between the detection heads 405 on both sides to completely cover the position to be detected. Then, the display screen 601 is used to control the detection head 405 to start, so that the road surface data irradiated by the detection head 405 is displayed on the display screen 601 in split screens to observe what kind of situation causes the cracks in the road marking. When the road marking is cracked, the crack is 100mm~200mm long, 1mm~20mm wide, and 0.7mm~2.5mm high and wide. The average crack length is 150mm, width is 10mm, and height is 1.5mm.

[0045] Embodiment 2: The device is moved to a suitable position, and the detection head 405 is controlled to start through the display screen 601, so that the road surface data irradiated by the detection head 405 is displayed on the display screen 601 in split screens, and the functional vehicle 700 is started at the same time, so that the functional vehicle 700 detects the position of the marking line to observe what kind of situation causes the crack of the road marking line. When the road marking line is transversely broken, the crack length is 100mm-200mm, the width is 1mm-25mm, and the height and width are 0.7mm-2.5mm, and the average crack length is 150mm, the width is 15mm, and the height and width are 2.5mm;

[0046] Embodiment 3: The device is moved to a suitable position. The controller 204, the display screen 601 and the detection head 405 are laser radar devices, which can cooperate with each other to perform all-round detection of the cracks to observe the cause of the cracks in the road markings. When the road markings are broken due to friction with the vehicle tires, the cracks are 100mm to 200mm long, 1mm to 30mm wide, and 0.7mm to 2.5mm high and wide. The average length of the cracks is 180mm, the width is 25mm, and the height is 2.5mm.

[0047] In addition, the circuits, electronic components and modules involved in the present invention are all prior art, and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to the internal structure and method.

[0048] The device or equipment models involved in this article are as follows:

[0049] Controller 204: LJ-X8000;

[0050] Probe 405: LJ-X8080;

[0051] Display 601: CA-MP120;

[0052] Speaker 503: JQD30 5-tone A;

[0053] Warning light 506: LTE-5081;

[0054] Motor 1 402: NEMA34;

[0055] Motor II 502: NEMA34.

[0056] Working principle: When the detection device is needed to perform road detection, first turn on the controller 204 and the display screen 601, control the hydraulic cylinder 802 to stretch, so that the telescopic frame 801 stretches, and moves the detection mechanism 900 to the two sides of the functional vehicle 700. When the detection mechanism 900 moves above the road markings on both sides of the functional vehicle 700, the software on the display screen 601 controls the controller 204 to send an operation signal, then covers the cover 206 and rotates the locking knob 207 to fix it, and then controls the motor 402 to start and drive the rotating screw 403 to rotate through the display screen 601, adjusts the distance between the detection heads 405 on both sides, and completely covers the position to be detected, and then controls the detection head 405 to start through the display screen 601, so that the road surface data irradiated by the detection head 405 is displayed on the display. The screen 601 is displayed in split screen, and at the same time, the two motors 502 on the mounting base 501 are started through the display screen 601 to rotate in the opposite direction, so that the warning light 506 stands upright, and the audio 503 and the warning light 506 are started through the display screen 601, so that the audio 503 starts to emit a warning sound to give a voice reminder to the passing vehicles, and the warning light 506 starts to flash, giving light reminders to the passing vehicles to make the work safer, and finally the functional vehicle 700 is started to detect the position of the marking line according to the predetermined speed and route, so as to speed up the detection and improve the work efficiency; it is worth noting that the controller 204, the display screen 601 and the detection head 405 are laser radar devices, which can perform all-round detection of the cracks, so that the operator can observe what caused the cracks.

[0057] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A rapid detection device for cracks in road markings, characterized in that: The functional vehicle comprises a functional vehicle (700), a hydraulic telescopic mechanism (800), a detection mechanism (900) and a warning mechanism (500), wherein the warning mechanism (500) is arranged on the rear end of the functional vehicle (700), the hydraulic telescopic mechanism (800) is respectively arranged on both sides of the bottom of the front end of the functional vehicle (700), and the detection mechanism (900) is arranged on one end of the hydraulic telescopic mechanism (800); The detection mechanism (900) comprises a connecting component (100), a control component (200), a fixing component (300), a working component (400) and a display component (600), wherein the control component (200) is arranged on the connecting component (100), the fixing component (300) is arranged on the control component (200), the working component (400) is arranged below the connecting component (100), and the display component (600) is arranged inside the compartment of the functional vehicle (700); The control component (200) comprises a protective shell (201), a controller (204) and a starting power supply (205) are arranged inside the protective shell (201), and the starting power supply (205) is electrically connected to the controller (204); The working assembly (400) comprises a fixed block (401) and a motor (402), a rotating screw (403) and a movable block (404) are arranged between the fixed block (401) and the motor (402), a probe (405) is arranged at the lower part of the movable block (404), and the motor (402) and the detection head (405) are electrically connected to the controller (204); The warning assembly (500) comprises a mounting base (501), and a plurality of motors (502), a sound system (503) and a plurality of warning lights (506) are arranged on the upper portion of the mounting base (501); the motors (502), the sound system (503) and the warning lights (506) are electrically connected to the controller (204).

2. The road marking crack rapid detection device according to claim 1, characterized in that: The hydraulic telescopic mechanism (800) comprises a telescopic frame (801) and two hydraulic cylinders (802), one end of the telescopic frame (801) and the hydraulic cylinder (802) are respectively connected to the bottom of the functional vehicle (700), and the other end of the hydraulic cylinder (802) is connected to the telescopic frame (801).

3. The road marking crack rapid detection device according to claim 1, characterized in that: The connection assembly (100) comprises a base (101), the base (101) is connected to one end of the telescopic frame (801), and an upper mounting frame (102) and a lower mounting frame (103) are arranged on the upper part of the base (101).

4. The road marking crack rapid detection device according to claim 1, characterized in that: The protective shell (201) is connected to the base (101); an interface groove (105) is provided on the back of the protective shell (201); a plurality of interface waterproof plates (104) are provided on the upper part of the interface groove (105); and the inclination angle between the interface waterproof plates (104) and the protective shell (201) is 45°.

5. The road marking crack rapid detection device according to claim 4, characterized in that: A heat dissipation window (202) is arranged on the left side of the protective shell (201), a plurality of heat dissipation waterproof plates (203) are arranged in the middle of the heat dissipation window (202), the heat dissipation waterproof plates (203) have an inclination angle of 45°, a partition plate (208) is arranged between the controller (204) and the starting power supply (205), a cover plate (206) is arranged on the right side of the protective shell (201), and a plurality of locking knobs (207) are arranged at the right end of the cover plate (206).

6. A road marking crack detection device according to claim 1, characterized in that: The fixing assembly (300) comprises a large pad (301), a small pad (303) and a spring (302); a plurality of large pads (301) are arranged on the upper part of the controller (204); a spring (302) is arranged between the plurality of large pads (301); a plurality of small pads (303) are arranged on the upper part of the starting power supply (205); and a spring (302) is arranged between the plurality of small pads (303).

7. A road marking crack detection device according to claim 1, characterized in that: The fixed block (401) and the motor one (402) are arranged at the lower part of the base (101), one end of the rotating screw rod (403) passes through the plurality of movable blocks (404) and the fixed block (401), and the other end of the rotating screw rod (403) is connected to the output end of the motor one (402).

8. A road marking crack detection device according to claim 1, characterized in that: The mounting base (501) is connected to the functional vehicle (700), a plurality of mounting blocks (504) are arranged on the upper portion of the mounting base (501), a connecting rod (505) is arranged between the warning light (506) and the mounting block (504), and the output end of the second motor (502) is connected to the connecting rod (505) through a shaft rod penetrating the mounting block (504).

9. A road marking crack detection device according to claim 1, characterized in that: The display assembly (600) comprises a display screen (601), a fixed base (603) and a connecting column (602); the fixed base (603) is connected to the functional vehicle (700); the display screen (601) is connected to the fixed base (603) via the connecting column (602); and the display screen (601) is electrically connected to the controller (204).

10. A road marking crack detection device according to claim 1, characterized in that: The materials of the large pad (301) and the small pad (303) are both nitrile rubber, and the heat dissipation and waterproof plate (203) is a plastic hollow plate made of ethylene.

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