Expressway roadbed and pavement damage detection device

Abstract

The invention provides an expressway roadbed and pavement damage detection device. The highway roadbed and pavement damage detection device comprises a rack, four wheels are fixedly mounted at the bottom of the rack, and a vehicle body is fixedly mounted at the top of the rack. According to the highway roadbed pavement damage detection device provided by the invention, the three-dimensional scanner is arranged to capture surface damages such as cracks and ruts in real time, the moving block is arranged to move to drive the probe to move, the crack depth is detected, the ground penetrating radar is arranged to accurately position a roadbed cavity area, and the detection accuracy is improved. An impact block is arranged to apply an instantaneous point load to the road surface of a cavity area to simulate vehicle passing, vibration and tiny settlement generated by response of a potential cavity area are excited, and a laser scanning head captures instantaneous dynamic deformation and static settlement contours caused by impact. The road surface and roadbed damage detection can be synchronously carried out, so that the highway roadbed and road surface health condition detection can be perfected, and potential traffic safety hazards are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of subgrade pavement damage detection, especially to a highway subgrade pavement damage detection device. BACKGROUND

[0002] The highway subgrade pavement damage detection device is a device for non-destructive testing of highway subgrade and pavement structure. Its main function is to evaluate the health condition of the pavement, identify the disease type, analyze the structure performance, and provide scientific basis for maintenance decision-making through non-destructive way. The device usually integrates various sensors and detection technologies, such as laser radar, three-dimensional scanning camera, etc., which can detect pavement cracks, potholes, settlement, rut, material performance, etc. with high precision and high efficiency.

[0003] The existing highway subgrade pavement damage detection device installs the detection assembly at the bottom of the vehicle body during detection. The vehicle moves on the road surface, and the driving assembly controls the movement of the detection assembly to detect the ground damage. Then the control assembly receives the information transmitted by the detection assembly and analyzes the pavement defects to realize automatic detection of pavement damage.

[0004] However, the existing device can only detect the damage on the surface of the pavement, such as cracks, potholes, settlement, and rut, and cannot identify potential damage in the subgrade, such as cavities. The lack of highway subgrade pavement health condition detection constitutes a serious traffic safety hazard.

[0005] Therefore, it is necessary to provide a highway subgrade pavement damage detection device to solve the above technical problems. SUMMARY

[0006] The present application provides a highway subgrade pavement damage detection device, which solves the problem of lack of highway subgrade pavement health condition detection constituting a serious traffic safety hazard.

[0007] To solve the above technical problems, the present application provides a highway subgrade pavement damage detection device, which comprises a rack, four wheels fixedly installed at the bottom of the rack, a vehicle body fixedly installed at the top of the rack, two handles fixedly installed on one side of the vehicle body, and a control system for automatic control device.

[0008] A moving mechanism is fixedly installed on the top of the rack.

[0009] A probe mechanism is fixedly installed on one side of the moving mechanism, which comprises a probe cylinder, the output end of which is fixedly connected with a probe.

[0010] The impact mechanism is fixedly installed on the top of the frame, and the impact mechanism comprises an impact support fixedly installed on the top of the frame, and the bottom of the impact support is fixedly installed with an impact cylinder, and the output end of the impact cylinder is fixedly connected with an impact block.

[0011] The two laser scanning mechanisms are used for scanning potential damage displayed when the impact block applies transient point load to the road surface.

[0012] The three-dimensional scanner is fixedly installed on the top of the inner wall of the vehicle body.

[0013] The ground penetrating radar is fixedly installed on one side of the moving mechanism and is used for identifying roadbed cavities.

[0014] Preferably, the moving mechanism comprises a moving support fixedly installed on the top of the frame, and the moving support is rotatably installed with a moving screw rod between two ends of the moving support, and the surface of the moving screw rod is threadedly connected with a moving block, and one end of the moving screw rod penetrates through one end of the moving support and extends to the outside, and the end of the moving screw rod located outside the moving support is fixedly connected with a moving motor, and the moving motor is fixedly installed on one side of the moving support through a shell, and the probe cylinder is fixedly installed on one side of the moving block.

[0015] Preferably, the ground penetrating radar is fixedly installed on one side of the moving support.

[0016] Preferably, the two laser scanning mechanisms are symmetrically fixedly installed on the bottom of the impact support, and the laser scanning mechanism comprises a support and a rotating arm support, and the support and the rotating arm support are fixedly installed on the bottom of the impact support, and the bottom end of the support is fixedly installed with a motor, and the bottom end of the rotating arm support is rotatably installed with a rotating arm, and one end of the motor is fixedly installed with the rotating arm, and the other end of the rotating arm is fixedly installed with a laser scanning head.

[0017] Preferably, the bottom of the frame is fixedly installed with a driving mechanism, and the driving mechanism comprises a driving support and an auxiliary support, and the driving support and the auxiliary support are fixedly installed on the bottom of the frame, and the driving support is rotatably installed with a driving screw rod between two ends of the driving support, and the surface of the driving screw rod is threadedly connected with a driving block, and one side of the driving block is fixedly installed with a toothed plate through a connecting plate, and one end of the driving screw rod penetrates through one end of the driving support and extends to the outside, and the end of the driving screw rod located outside the driving support is fixedly connected with a driving motor, and the driving motor is fixedly installed on one side of the driving support through a shell, and the auxiliary support is fixedly installed with an auxiliary rod between two ends of the auxiliary support, and the surface of the auxiliary rod is slidably connected with an auxiliary block.

[0018] Preferably, the inside of the frame is rotatably provided with a protection mechanism, the protection mechanism comprises a protection shaft, the protection shaft is rotatably provided in the inside of the frame, the surface of the protection shaft is fixedly provided with a protection plate, the protection plate is provided in matching with the ground penetrating radar, and the surface of the protection shaft is fixedly provided with a gear.

[0019] Preferably, the gear plate is engaged with the gear, and the inside of the frame is fixedly provided with two support plates for supporting the probe cylinder.

[0020] Preferably, the auxiliary block and the driving block are fixedly provided with a cleaning mechanism, the cleaning mechanism comprises a cleaning support, the cleaning support is fixedly provided between the auxiliary block and the driving block, rotating wheels are rotatably provided between the two ends of the cleaning support, one end of the rotating wheel penetrates one end of the cleaning support and extends to the outside, a cleaning motor is fixedly connected to one end of the rotating wheel outside the cleaning support, the cleaning motor is fixedly provided on one side of the cleaning support through a shell, a brush plate is fixedly provided on one side of the cleaning support, and a plurality of brushes are fixedly provided at the bottom of the brush plate.

[0021] Preferably, the inside of the frame is fixedly provided with a permeable liquid mechanism through two connecting frames, the permeable liquid mechanism comprises a permeable liquid tank, the permeable liquid tank is fixedly provided in the inside of the frame through the two connecting frames, a horizontal groove one is formed in one side of the permeable liquid tank, a soaking box is fixedly provided on one side of the permeable liquid tank, a horizontal groove two is formed in one side of the soaking box, the horizontal groove one is provided in matching with the horizontal groove two, two sliding grooves are formed in the two sides of the permeable liquid tank, and an opening and closing rod is slidably provided in the inside of the two sliding grooves.

[0022] Preferably, the driving block and the auxiliary block are fixedly provided with a push plate on one side, and the two push plates are provided in matching with the two ends of the opening and closing rod.

[0023] Compared with the related art, the highway roadbed pavement damage detection device provided by the application has the following beneficial effects:

[0024] This invention provides a highway subgrade and pavement damage detection device. It uses a 3D scanner to capture surface damage such as cracks and ruts in real time. A moving block moves a probe to detect crack depth. Ground-penetrating radar precisely locates roadbed cavities. An impact block applies an instantaneous point load to the pavement in the cavities to simulate vehicle traffic, stimulating vibrations and minor settlements in the potential cavities. A laser scanning head captures the instantaneous dynamic deformation and static settlement profiles caused by the impact. Simultaneous detection of pavement and subgrade damage improves the health status of highway subgrades and pavements, preventing traffic safety hazards. Attached Figure Description

[0025] Figure 1 A schematic diagram of a preferred embodiment of a highway subgrade and pavement damage detection device provided by the present invention;

[0026] Figure 2 for Figure 1 Another structural schematic diagram of a highway subgrade and pavement damage detection device is shown.

[0027] Figure 3 for Figure 1 The diagram shows the structure behind the hidden vehicle body;

[0028] Figure 4 for Figure 3 The diagram shows the structure of the probe mechanism.

[0029] Figure 5 for Figure 3 The diagram shows the structure of the moving mechanism.

[0030] Figure 6 for Figure 3 The diagram shows the structure of the impact mechanism.

[0031] Figure 7 for Figure 3 The diagram shows the structure of the laser scanning mechanism.

[0032] Figure 8 This is a schematic diagram of the structure of a second embodiment of a highway subgrade and pavement damage detection device;

[0033] Figure 9 This is another structural schematic diagram of a second embodiment of a highway subgrade and pavement damage detection device;

[0034] Figure 10 for Figure 9 The diagram shows the installation of the cleaning mechanism;

[0035] Figure 11 for Figure 9 The diagram shows the structure of the drive mechanism.

[0036] Figure 12 For Figure 9 The structure diagram of the cleaning mechanism is shown.

[0037] Figure 13 For Figure 9 The structure diagram of the protection mechanism is shown.

[0038] Figure 14 For Figure 9 The structure diagram of the penetrating liquid mechanism is shown.

[0039] Figure 15 For Figure 14 The enlarged schematic view of A is shown.

[0040] Figure label: 1, rack, 2, probe mechanism, 201, probe cylinder, 202, probe, 3, moving mechanism, 301, moving support, 302, moving screw, 303, moving block, 304, moving motor, 4, drive mechanism, 401, drive support, 402, drive screw, 403, drive block, 404, drive motor, 405, auxiliary support, 406, auxiliary rod, 407, auxiliary block, 408, toothed plate, 5, cleaning mechanism, 501, cleaning support, 502, cleaning roller, 503, brush plate, 504, brush, 505, cleaning motor, 6, protection mechanism, 601, protection shaft, 602, protection plate, 603, gear, 7, impact mechanism, 701, impact support, 702, impact cylinder, 703, impact block, 8, laser scanning mechanism, 801, strut, 802, motor, 803, rotating arm, 804, laser scanning head, 805, rotating arm support, 9, penetrating liquid mechanism, 901, penetrating liquid tank, 902, horizontal groove one, 903, soaking box, 904, horizontal groove two, 905, opening and closing rod, 906, opening and closing plate, 907, sliding groove, 10, wheel, 11, vehicle body, 12, handle, 13, control system, 14, three-dimensional scanner, 15, ground penetrating radar, 16, support plate, 17, push plate. DETAILED DESCRIPTION

[0041] The application will be further described below in conjunction with the drawings and embodiments.

[0042] First embodiment

[0043] Please refer to Figures 1-7 A highway subgrade pavement damage detection device, comprising a rack 1, four wheels 10 are fixedly installed on the bottom of the rack 1, a vehicle body 11 is fixedly installed on the top of the rack 1, two handles 12 are fixedly installed on one side of the vehicle body 11, and a control system 13 for automatic control device is further included;

[0044] A moving mechanism 3 is fixedly installed on the top of the rack 1.

[0045] A probe mechanism 2 is fixedly installed on one side of the moving mechanism 3, and the probe mechanism 2 comprises a probe cylinder 201, one side of which is fixedly installed on one side of the moving mechanism 3 through a support plate, and the output end of the probe cylinder 201 is fixedly connected with a probe 202.

[0046] An impact mechanism 7 is fixedly installed on the top of the rack 1, and the impact mechanism 7 comprises an impact support 701 fixedly installed on the top of the rack 1, and the bottom of the impact support 701 is fixedly installed with an impact cylinder 702, and the output end of the impact cylinder 702 is fixedly connected with an impact block 703.

[0047] Two laser scanning mechanisms 8 are used to scan potential damage displayed when the impact block 703 exerts transient point load on the road surface.

[0048] A three-dimensional scanner 14 is fixedly installed on the top of the inner wall of the vehicle body 11.

[0049] A ground penetrating radar 15 is fixedly installed on one side of the moving mechanism 3 for identifying roadbed cavities.

[0050] The moving mechanism 3 comprises a moving support 301 fixedly installed on the top of the rack 1, and a moving screw 302 rotatably installed between the two ends of the moving support 301, and the surface of the moving screw 302 is threadedly connected with a moving block 303, and one end of the moving screw 302 penetrates through one end of the moving support 301 and extends to the outside, and one end of the moving screw 302 located outside the moving support 301 is fixedly connected with a moving motor 304, and the moving motor 304 is fixedly installed on one side of the moving support 301 through a housing, and the probe cylinder 201 is fixedly installed on one side of the moving block 303.

[0051] The ground penetrating radar 15 is fixedly installed on one side of the moving support 301.

[0052] Two laser scanning mechanisms 8 are symmetrically fixedly installed at the bottom of the impact support 701, the laser scanning mechanism 8 comprises a support column 801 and a rotating arm support 805, the support column 801 and the rotating arm support 805 are fixedly installed at the bottom of the impact support 701, a motor 802 is fixedly installed at the bottom end of the support column 801, a rotating arm 803 is rotatably installed at the bottom end of the rotating arm support 805, the output end of the motor 802 is fixedly installed with one end of the rotating arm 803, and a laser scanning head 804 is fixedly installed at the other end of the rotating arm 803.

[0053] In actual use, the bottom end of the impact block 703 is made of rubber; and the three-dimensional scanner 14 is arranged at the front end in the advancing direction.

[0054] The working principle of the highway subgrade pavement damage detection device provided by the application is as follows:

[0055] Firstly, the staff drives the device to move on the road surface to be detected by the two handles 12, and the control system 13 controls the movement, the three-dimensional scanner 14 is started to perform three-dimensional scanning on the cracks, pits, ruts, subsidence and loose in the road surface, and the image quantitative index is analyzed and the data is uploaded, and the ground penetrating radar 15 is started to detect the subgrade layer to identify the subgrade cavity and density.

[0056] Then, when the three-dimensional scanner 14 scans the crack area, the device stops moving, the moving motor 304 is started to drive the moving screw 302 to rotate, the moving screw 302 is threadedly connected with the moving block 303, the moving block 303 drives the probe cylinder 201 to move to the crack area in the moving process, the probe cylinder 201 is started to drive the probe 202 to descend into the crack for detecting the depth, and the data is uploaded by the control system 13.

[0057] Finally, when the ground penetrating radar 15 detects the cavity area, the cavity area is prone to have potential damage, after the impact block 703 is located above the cavity area, the impact cylinder 702 is started to drive the impact block 703 to apply a transient point load to the road surface of the cavity area, to excite the vibration and slight subsidence caused by the response of the potential cavity area, at this time, the two motors 802 are started to drive the two rotating arms 803 to move oppositely, and the laser scanning head 804 on the rotating arm 803 captures the transient dynamic deformation and static subsidence profile caused by the impact.

[0058] Compared with the related art, the highway subgrade pavement damage detection device provided by the application has the following beneficial effects:

[0059] By setting up a 3D scanner 14 to capture surface damage such as cracks and ruts in real time, and by setting up a moving block 303 to move the probe 202 to detect the depth of cracks, a ground penetrating radar 15 is set up to accurately locate roadbed cavities, and an impact block 703 is set up to apply instantaneous point loads to the road surface in the cavities to simulate vehicle passage, thereby stimulating the vibration and micro-settlement generated by the response of potential cavities. The laser scanning head 804 captures the instantaneous dynamic deformation and static settlement profile caused by the impact. Simultaneous detection of road surface and roadbed damage can improve the health status detection of highway roadbed and pavement, and avoid traffic safety hazards.

[0060] Second Embodiment

[0061] Please refer to the following: Figures 8-15 Based on the first embodiment of this application which provides a highway subgrade and pavement damage detection device, the second embodiment of this application proposes another highway subgrade and pavement damage detection device. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0062] Specifically, the difference in the highway subgrade and pavement damage detection device provided in the second embodiment of this application is that a drive mechanism 4 is fixedly installed at the bottom of the frame 1. The drive mechanism 4 includes a drive bracket 401 and an auxiliary bracket 405. Both the drive bracket 401 and the auxiliary bracket 405 are fixedly installed at the bottom of the frame 1. A drive screw 402 is rotatably installed between the two ends of the drive bracket 401. A drive block 403 is threadedly connected to the surface of the drive screw 402. A toothed plate 408 is fixedly installed on one side of the drive block 403 through a connecting plate. One end of the drive screw 402 passes through one end of the drive bracket 401 and extends to the outside. A drive motor 404 is fixedly connected to the end of the drive screw 402 located outside the drive bracket 401. The drive motor 404 is fixedly installed on one side of the drive bracket 401 through a housing. An auxiliary rod 406 is fixedly installed between the two ends of the auxiliary bracket 405. An auxiliary block 407 is slidably connected to the surface of the auxiliary rod 406.

[0063] A protective mechanism 6 is rotatably installed inside the frame 1. The protective mechanism 6 includes a protective shaft 601, which is rotatably installed inside the frame 1. A protective plate 602 is fixedly installed on the surface of the protective shaft 601. The protective plate 602 is adapted to be installed with the ground penetrating radar 15. A gear 603 is fixedly installed on the surface of the protective shaft 601.

[0064] The toothed plate 408 meshes with the gear 603, and two support plates 16 are fixedly installed inside the frame 1 to support the probe cylinder 201.

[0065] A cleaning mechanism 5 is fixedly installed between the auxiliary block 407 and the drive block 403. The cleaning mechanism 5 includes a cleaning bracket 501, which is fixedly installed between the auxiliary block 407 and the drive block 403. A cleaning roller 502 is rotatably installed between the two ends of the cleaning bracket 501. One end of the cleaning roller 502 passes through one end of the cleaning bracket 501 and extends to the outside. A cleaning motor 505 is fixedly connected to the end of the cleaning roller 502 located outside the cleaning bracket 501. The cleaning motor 505 is fixedly installed on one side of the cleaning bracket 501 through a housing. A brush plate 503 is fixedly installed on one side of the cleaning bracket 501, and several brushes 504 are fixedly installed at the bottom of the brush plate 503.

[0066] The permeate mechanism 9 is fixedly installed inside the frame 1 via two connecting brackets. The permeate mechanism 9 includes a permeate tank 901, which is fixedly installed inside the frame 1 via two connecting brackets. A first transverse groove 902 is provided on one side of the permeate tank 901. A soaking box 903 is fixedly installed on one side of the permeate tank 901. A second transverse groove 904 is provided on one side of the soaking box 903. The first transverse groove 902 and the second transverse groove 904 are adapted to each other. Two sliding grooves 907 are provided on both sides of the permeate tank 901. An opening and closing rod 905 is slidably installed inside the two sliding grooves 907. The two ends of the opening and closing rod 905 extend out of the sliding grooves 907. An opening and closing plate 906 is fixedly installed on the surface of the opening and closing rod 905 inside the permeate tank 901. The opening and closing plate 906 is adapted to the first transverse groove 902.

[0067] Push plates 17 are fixedly installed on one side of both the drive block 403 and the auxiliary block 407, and the two push plates 17 are adapted to be installed at both ends of the opening and closing rod 905.

[0068] In actual use, the surface of the cleaning roller 502 is provided with a cleaning brush; the installation height of the soaking box 903 is lower than that of the permeate tank 901; the push plate 17 is a semi-circular push plate; the brush 504 and the cleaning roller 502 are used to lift and clean; the permeate tank 901 contains permeate that can be replenished after it is used up.

[0069] The working principle of the highway subgrade and pavement damage detection device provided in this embodiment is as follows:

[0070] First, before the impact block 703 starts working, to avoid the influence of impurities and stones on the road surface, the drive motor 404 is started to drive the drive screw 402 to rotate. The drive screw 402 is threadedly connected to the drive block 403. The drive block 403, together with the auxiliary block 407, drives the sweeping bracket 501 to move. At this time, when the drive block 403 starts to move, it drives the toothed plate 408 to mesh with the gear 603. The gear 603 rotates clockwise. The gear 603 drives the protective plate 602 to rotate clockwise to the underside of the ground penetrating radar 15 through the protective shaft 601, so as to avoid the dust raised by the sweeping mechanism 5 from adhering to the surface of the ground penetrating radar 15 and affecting the detection results.

[0071] Then, as the sweeping bracket 501 moves with the drive block 403, the sweeping motor 505 is started to drive the sweeping roller 502 to rotate. As the sweeping roller 502 moves laterally, it rotates to sweep the road surface.

[0072] Then, when moving to the end, the two push plates 17 together lift the opening and closing rod 905. At this time, the brush 504 enters the soaking box 903. After the push plate 17 lifts the opening and closing rod 905, the permeate in the permeate tank 901 flows into the soaking box 903 through the first horizontal groove 902 and the second horizontal groove 904. After the brush 504 is wetted with permeate, the drive motor 404 reverses and drives the drive block 403 to reset. At this time, the road surface after cleaning is not cleaned and the cleaning motor 505 is turned off. The brush 504 performs a uniform brushing of permeate on the detected cavity area, and the worker sprays the developing agent on the points in this area.

[0073] Finally, the hidden damage is captured by the laser scanning head 804.

[0074] Compared with related technologies, the highway subgrade and pavement damage detection device provided in this embodiment has the following beneficial effects:

[0075] When the cleaning mechanism 5 moves, the toothed plate 408 drives the protective plate 602 to rotate through the meshing gear 603, forming a physical barrier to isolate dust and protect the ground-penetrating radar 15. The brush 504 is immersed in the soaking box 903 to automatically absorb the penetrating liquid. After the cleaning mechanism 5 finishes cleaning, it is evenly brushed on the road surface without impurities to improve the penetration efficiency. After penetrating through the invisible cracks, the developer is sprayed to make the invisible and hard-to-detect damage more clearly visible and automatically revealed, avoiding missed detection of hidden cracks. The two push plates 17 are set to push the opening and closing rod 905 to automatically close the penetrating liquid. While quantitatively releasing the penetrating liquid, it can also protect the penetrating liquid from contact with external impurities and avoid affecting the detection effect.

[0076] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A highway subgrade and pavement damage detection device, comprising a frame, four wheels fixedly mounted at the bottom of the frame, a vehicle body fixedly mounted at the top of the frame, and two handles fixedly mounted on one side of the vehicle body, characterized in that... Also includes: Control systems used in automated control devices; A moving mechanism, which is fixedly installed on the top of the frame; A probe mechanism is fixedly installed on one side of the moving mechanism. The probe mechanism includes a probe cylinder, one side of which is fixedly installed on one side of the moving mechanism via a support plate. A probe is fixedly connected to the output end of the probe cylinder. An impact mechanism is fixedly installed on the top of the frame. The impact mechanism includes an impact bracket, which is fixedly installed on the top of the frame. An impact cylinder is fixedly installed at the bottom of the impact bracket, and an impact block is fixedly connected to the output end of the impact cylinder. The laser scanning mechanism, two of which are used to scan for potential damage when the impact block applies an instantaneous point load to the road surface; A 3D scanner, which is fixedly installed on the top of the inner wall of the vehicle body; Ground-penetrating radar, which is fixedly installed on one side of the mobile mechanism, is used to identify roadbed cavities.

2. The highway subgrade and pavement damage detection device according to claim 1, characterized in that, The moving mechanism includes a moving bracket, which is fixedly installed on the top of the frame. A moving screw is rotatably installed between the two ends of the moving bracket. A moving block is threadedly connected to the surface of the moving screw. One end of the moving screw passes through one end of the moving bracket and extends to the outside. A moving motor is fixedly connected to the end of the moving screw located outside the moving bracket. The moving motor is fixedly installed on one side of the moving bracket through a housing. The probe cylinder is fixedly installed on one side of the moving block.

3. The highway subgrade and pavement damage detection device according to claim 2, characterized in that, The ground-penetrating radar is fixedly installed on one side of the mobile support.

4. The highway subgrade and pavement damage detection device according to claim 1, characterized in that, Two laser scanning mechanisms are symmetrically fixedly installed at the bottom of the impact bracket. Each laser scanning mechanism includes a support column and a rotating arm bracket. Both the support column and the rotating arm bracket are fixedly installed at the bottom of the impact bracket. A motor is fixedly installed at the bottom end of the support column, and a rotating arm is rotatably installed at the bottom end of the rotating arm bracket. The output end of the motor is fixedly installed at one end of the rotating arm, and a laser scanning head is fixedly installed at the other end of the rotating arm.

5. The highway subgrade and pavement damage detection device according to claim 1, characterized in that, A drive mechanism is fixedly installed at the bottom of the frame. The drive mechanism includes a drive bracket and an auxiliary bracket. Both the drive bracket and the auxiliary bracket are fixedly installed at the bottom of the frame. A drive screw is rotatably installed between the two ends of the drive bracket. A drive block is threadedly connected to the surface of the drive screw. A toothed plate is fixedly installed on one side of the drive block through a connecting plate. One end of the drive screw passes through one end of the drive bracket and extends to the outside. A drive motor is fixedly connected to the end of the drive screw located outside the drive bracket. The drive motor is fixedly installed on one side of the drive bracket through a housing. An auxiliary rod is fixedly installed between the two ends of the auxiliary bracket. An auxiliary block is slidably connected to the surface of the auxiliary rod.

6. The highway subgrade and pavement damage detection device according to claim 5, characterized in that, The frame is equipped with a protective mechanism that is rotatably mounted inside the frame. The protective mechanism includes a protective shaft that is rotatably mounted inside the frame. A protective plate is fixedly mounted on the surface of the protective shaft. The protective plate is adapted to the ground penetrating radar. A gear is fixedly mounted on the surface of the protective shaft.

7. The highway subgrade and pavement damage detection device according to claim 6, characterized in that, The toothed plate meshes with the gear, and two support plates are fixedly installed inside the frame to support the probe cylinder.

8. The highway subgrade and pavement damage detection device according to claim 6, characterized in that, A cleaning mechanism is fixedly installed between the auxiliary block and the drive block. The cleaning mechanism includes a cleaning bracket, which is fixedly installed between the auxiliary block and the drive block. A cleaning roller is rotatably installed between the two ends of the cleaning bracket. One end of the cleaning roller passes through one end of the cleaning bracket and extends to the outside. A cleaning motor is fixedly connected to the end of the cleaning roller located outside the cleaning bracket. The cleaning motor is fixedly installed on one side of the cleaning bracket through a housing. A brush plate is fixedly installed on one side of the cleaning bracket, and several brushes are fixedly installed at the bottom of the brush plate.

9. The highway subgrade and pavement damage detection device according to claim 6, characterized in that, The permeate mechanism is fixedly installed inside the frame via two connecting brackets. The permeate mechanism includes a permeate tank, which is fixedly installed inside the frame via two connecting brackets. A transverse groove is formed on one side of the permeate tank, and a soaking box is fixedly installed on one side of the permeate tank. A transverse groove is formed on one side of the soaking box, and the first and second transverse grooves are fitted together. Two sliding grooves are formed on both sides of the permeate tank, and opening and closing rods are slidably installed inside the two sliding grooves. The two ends of the opening and closing rods extend out of the sliding grooves. An opening and closing plate is fixedly installed on the surface of the opening and closing rod inside the permeate tank, and the opening and closing plate is fitted together with the first transverse groove.

10. A highway subgrade and pavement damage detection device according to claim 9, characterized in that, Push plates are fixedly installed on one side of both the drive block and the auxiliary block, and the two push plates are adapted to be installed at both ends of the opening and closing rod.

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