Road construction pavement quality detection equipment

Abstract

The invention discloses road construction pavement quality detection equipment, and relates to the field of pavement quality detection.The road construction pavement quality detection equipment comprises a movable bottom plate and a fixed handrail fixedly mounted at the upper end of the movable bottom plate, and supporting wheels are arranged at the lower end of the movable bottom plate; a hydraulic push rod is arranged at the upper end of the movable bottom plate, and a lifting plate is arranged at the upper end of the hydraulic push rod. According to the road surface quality detection equipment for highway construction, in the downward moving process of the lifting plate, a cleaning rod rotates at the upper end of the ground, so that the cleaning rod automatically cleans sundries such as stones at the upper end of a road surface, the influence of the sundries on the equipment in the detection process is reduced, and the use convenience and accuracy of the detection equipment are improved; through the integrated structural design, organic combination of sampling, sealing, cleaning and positioning functions is achieved, the efficiency and accuracy of road construction pavement quality detection are remarkably improved, flying dust and noise in the working process of the detection equipment can be reduced, and the use comfort of the detection equipment is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of pavement quality testing technology, specifically to a pavement quality testing device for highway construction. Background Technology

[0002] During highway construction, in order to ensure the quality of the road surface, testing equipment is used to measure and inspect the road surface. However, the testing process requires the use of specialized testing equipment. Although the existing road construction quality testing equipment can cool the core sampling structure, the overall cooling effect is poor. The liquid can only drip from the top of the drill bit. During the high-speed rotation of the drill bit during drilling and core sampling, the liquid splashes and is difficult to enter the bottom of the drill bit. The cooling effect at the bottom of the drill bit is poor, and the temperature is prone to be too high, which will affect the service life of the sampling drill bit. In addition, more cooling liquid is needed.

[0003] Patent CN215726952U discloses a highway pavement construction quality testing device. A base plate and mounting frame form a stable installation frame, facilitating component installation. A drive mechanism rotates a one-way threaded rod, allowing for adjustable raising and lowering of the mounting plate. A single-axis motor with gears drives a core drill rod to rotate rapidly for sampling, saving time and effort while causing minimal damage to the pavement, facilitating later repairs. A dust suppression mechanism reduces dust during drilling, preventing debris and dust from polluting the air and harming personnel health. A measuring mechanism facilitates sample testing, and a balance bar adjusts the balance, minimizing drilling errors.

[0004] Patent CN116067863B discloses a highway pavement construction quality testing device. By combining a pavement cleaning mechanism and a road permeability testing mechanism, the device improves the comprehensiveness of its testing capabilities. The pavement cleaning mechanism pre-cleans dust and debris from the pavement before the permeability testing mechanism is used, improving the accuracy of the test results. Furthermore, the pavement cleaning structure uses rollers for power, eliminating the need for a separate power source, thus reducing costs and increasing the device's reliability. The cooling structure, working in conjunction with a sampling mechanism and powered by the same source, continuously delivers cooling liquid from the water tank to the bottom of the drill bit via a through-hole in the drive shaft. Compared to traditional cooling structures, this design avoids obstruction from the pavement and sampling core, allowing the cooling liquid to reach the drill bit directly for more efficient cooling, protecting and cooling the drill bit, and using less water, thus reducing water waste.

[0005] In the aforementioned patent, the device solves the problems mentioned above. However, the device still has the following problems: during the operation of the device, the drilling pipe needs to move down and rotate inside the device to complete the sampling and testing process of the road surface. The outer side of the drilling pipe is directly the bottom plate of the device. A space is opened inside the bottom plate for the vertical movement of the drilling pipe. This structure is prone to dust generation during the operation of the rotating rod, and noise is easily generated when the drilling pipe rotates at high speed. The noise and dust seriously affect the working environment of the device and greatly reduce the comfort of using the device.

[0006] To address the aforementioned issues, there is an urgent need for innovative design based on the existing testing equipment structure. Summary of the Invention

[0007] The purpose of this invention is to provide a road surface quality testing device for highway construction, in order to solve the problems mentioned in the background art, such as the dust generated during the operation of the rotating rod in the existing device, and the noise generated when the drill pipe rotates at high speed. The noise and dust seriously affect the working environment of the device and greatly reduce the comfort of using the device.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a road surface quality testing device for highway construction, comprising a movable base plate and a fixed handrail fixedly installed on the upper end of the movable base plate, and a support wheel provided at the lower end of the movable base plate; a hydraulic push rod is provided at the upper end of the movable base plate, and a lifting plate is provided at the upper end of the hydraulic push rod, and a hydraulic motor is provided at the upper end of the lifting plate; a rotating shaft is provided at the output end of the hydraulic motor, and a sampling toothed cylinder is provided at the lower end of the rotating shaft, and the sampling toothed cylinder is located inside the movable base plate; a sealing cylinder is provided on the outer side of the sampling toothed cylinder; a moving structure provided at the upper end of the movable base plate enables the sealing cylinder to seal the sampling toothed cylinder; a positioning structure provided at the lower end of the movable base plate enables the positioning effect of the movable base plate; and a cleaning structure provided at the lower end of the movable base plate enables automatic cleaning of the upper surface of the highway.

[0009] Preferably, the motion structure includes a telescopic rod, which is fixedly installed at the lower end of the lifting plate, and a lifting cylinder is fixedly installed at the lower end of the telescopic rod. The lifting cylinder is slidably connected to the sealing cylinder. The lifting cylinder is located outside the rotating shaft, and nozzles are arranged at equal angles inside the lifting cylinder.

[0010] Preferably, a water tank is provided at the upper end of the movable base plate, and a water pump communicating with the nozzle is provided on the outside of the water tank, and a limiting rod provided at the upper end of the movable base plate is slidably connected to the lifting plate.

[0011] Preferably, the lifting cylinder and the sealing cylinder are located outside the sampling toothed cylinder, and the lower end face of the sealing cylinder is lower than the lower end face of the sampling toothed cylinder, and the radius of the sealing cylinder is larger than the radius of the lifting cylinder.

[0012] Preferably, the positioning structure includes a second telescopic rod, which is fixedly installed at the lower end of the movable base plate, and a positioning plate is fixedly installed at the lower end of the second telescopic rod. At the same time, two sets of positioning plates and the second telescopic rod are symmetrically arranged on the left and right sides of the lower end of the movable base plate.

[0013] Preferably, a push rod is rotatably mounted on the upper end of the positioning plate, and a push cylinder is slidably mounted on the upper end of the push rod. A return spring is provided inside the push rod on the side near the push cylinder. A sliding plate is rotatably mounted on the outer side of the upper end of the push cylinder, and the sliding plate is slidably connected to two sets of positioning rods that are horizontally fixedly mounted on the lower end of the movable base plate.

[0014] Preferably, a lower moving rod is fixedly installed on the outer side of the sliding plate, and the lower moving rod is slidably connected to a lower squeezing cylinder fixedly installed at the lower end of the movable base plate. The lower squeezing cylinder is connected to an upper squeezing cylinder fixedly installed at the upper end of the movable base plate through an infusion pipe. At the same time, an upper moving rod slidably installed inside the upper squeezing cylinder is fixedly connected to the lower end of the lifting plate.

[0015] Preferably, the cleaning structure includes a vertical rod, which is fixedly installed at the lower end of the lifting plate, and a connecting rod is rotatably installed at the lower end of the vertical rod, while a connecting piece is rotatably installed at the lower end of the connecting rod.

[0016] Preferably, a rotating round rod is rotatably mounted inside the connector, and two sets of cleaning rods are provided on the outer side of the lower end of the rotating round rod, and a movable square rod is slidably mounted inside the upper end of the rotating round rod.

[0017] Preferably, a movable component is rotatably provided on the outer side of the movable square rod, and the movable component is slidably connected to a guide rod fixedly installed at the lower end of the movable base plate. A driven gear is fixedly installed at the upper end of the movable square rod, and the driven gear is meshed with a fixed rack fixedly installed at the lower end of the movable base plate.

[0018] Compared with the prior art, the beneficial effects of the present invention are: the device, through its integrated structural design, achieves an organic combination of sampling, sealing, cleaning and positioning functions, which significantly improves the efficiency and accuracy of road surface quality testing during highway construction, while reducing dust and noise during operation and effectively improving the comfort of using the testing device.

[0019] 1. By setting a lifting cylinder and a sealing cylinder on the outside of the sampling cylinder, the sampling cylinder can be wrapped with the lifting cylinder and the sealing cylinder during the working process, reducing the noise and dust generated during the operation of the sampling cylinder, improving the working environment of the testing equipment, and effectively improving the comfort of using the testing equipment. 2. By setting a positioning structure at the lower end of the movable base plate, the positioning plate is brought into contact with the ground by the telescopic rod II, and the buffer mechanism formed by the push rod, push cylinder and return spring is used to ensure the stability of the equipment during sampling; 3. Furthermore, the positioning structure achieves linkage between the positioning plate and the moving base plate through the sliding connection between the sliding plate and the positioning rod. At the same time, the cooperation between the lower moving rod and the lower extrusion cylinder pushes the lower moving rod to drive the sliding plate to move, thereby enhancing the grip of the positioning plate. This not only improves the accuracy of the equipment when sampling, but also effectively reduces the detection error caused by uneven road surface. 4. Furthermore, nozzles are installed at equal angles inside the lifting cylinder and connected to the water tank and water pump. This allows for automatic cleaning of the sampling cylinder after sampling is completed. At the same time, the nozzles also facilitate cleaning of the inside of the sealed cylinder and reduce dust generation during sampling, thus ensuring the long-term stable operation of the equipment. 5. Furthermore, as the lifting plate moves downward, the cleaning rod rotates at the top of the ground, allowing it to automatically clean up stones and other debris on the road surface. This reduces the impact of debris on the equipment's detection process and effectively improves the ease of use and accuracy of the detection equipment. Attached Figure Description

[0020] Figure 1 This is a top-view three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention viewed from below; Figure 3 This is a three-dimensional structural diagram of the lifting plate of the present invention viewed from below; Figure 4 This is a cross-sectional three-dimensional structural diagram of the sampling toothed cylinder of the present invention; Figure 5 This is a three-dimensional structural diagram of the push cylinder of the present invention viewed from below; Figure 6 This is a top-view three-dimensional structural diagram of the push rod of the present invention; Figure 7 This is a three-dimensional structural diagram of the cleaning rod of the present invention viewed from below; Figure 8 This is a top-view three-dimensional structural diagram of the rotating round rod of the present invention.

[0021] In the diagram: 1. Movable base plate; 2. Fixed handrail; 3. Hydraulic push rod; 4. Lifting plate; 5. Hydraulic motor; 6. Rotating shaft; 7. Sampling gear cylinder; 8. Telescopic rod one; 9. Lifting cylinder; 10. Sealing cylinder; 11. Nozzle; 12. Water tank; 13. Water pump; 14. Limiting rod; 15. Telescopic rod two; 16. Push rod; 17. Push cylinder; 18. Return spring; 19. Sliding plate; 20. Positioning rod; 21. Lower moving rod; 22. Lower squeezing cylinder; 23. Upper moving rod; 24. Upper squeezing cylinder; 25. Infusion tube; 26. Support wheel; 27. Positioning plate; 28. Vertical rod; 29. ​​Connecting rod; 30. Connecting piece; 31. Rotating round rod; 32. Cleaning rod; 33. Movable square rod; 34. Moving part; 35. Guide rod; 36. Driven gear; 37. Fixed rack. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] This invention provides the following technical solution: a road surface quality testing device for highway construction, such as... Figures 1-4 As shown, in order to solve the problem of low user comfort in existing testing equipment, the process of noise and dust reduction of the testing device is disclosed, thereby improving the working comfort of the testing equipment. The specific content is as follows: A movable base plate 1 and a fixed handrail 2 are fixedly installed on the upper end of the movable base plate 1, and a support wheel 26 is provided at the lower end of the movable base plate 1; a hydraulic push rod 3 is provided at the upper end of the movable base plate 1, and a lifting plate 4 is provided at the upper end of the hydraulic push rod 3, and a hydraulic motor 5 is provided at the upper end of the lifting plate 4. A rotating shaft 6 is provided at the output end of the hydraulic motor 5, and a sampling toothed cylinder 7 is provided at the lower end of the rotating shaft 6. The sampling toothed cylinder 7 is located inside the movable base plate 1, and a sealing cylinder 10 is provided on the outer side of the sampling toothed cylinder 7. The moving structure provided at the upper end of the movable base plate 1 can make the sealing cylinder 10 seal the sampling toothed cylinder 7. The positioning structure provided at the lower end of the movable base plate 1 can control the positioning effect of the movable base plate 1. The cleaning structure provided at the lower end of the movable base plate 1 can clean the public... The road surface is automatically cleaned. The moving structure includes a telescopic rod 8, which is fixedly installed at the lower end of the lifting plate 4. A lifting cylinder 9 is fixedly installed at the lower end of the telescopic rod 8. The lifting cylinder 9 is slidably connected to the sealing cylinder 10. The lifting cylinder 9 is located outside the rotating shaft 6. Spray nozzles 11 are set at equal angles inside the lifting cylinder 9. A water tank 12 is set at the upper end of the movable base plate 1. A water pump 13 connected to the spray nozzles 11 is set outside the water tank 12. A limiting rod 14 is set at the upper end of the movable base plate 1 and is slidably connected to the lifting plate 4. The lifting cylinder 9 and the sealing cylinder 10 are located outside the sampling toothed cylinder 7. The lower end face of the sealing cylinder 10 is lower than the lower end face of the sampling toothed cylinder 7. The radius of the sealing cylinder 10 is larger than the radius of the lifting cylinder 9.

[0024] When using this road construction pavement quality testing equipment, first place the testing equipment at the location where it needs to be used. During the movement of the testing equipment, it needs to be pushed by the fixed handrail 2. During the movement, the moving base plate 1 needs to be moved by the rotation of the support wheel 26. After the moving base plate 1 moves to the required position, the equipment can then sample and test the road. During this process, the hydraulic motor 5 needs to be controlled by the controller. The hydraulic motor 5 will drive the sampling toothed cylinder 7 to rotate through the rotating shaft 6, so that the sampling toothed cylinder 7 samples and tests the road. During the testing process, the hydraulic push rod 3 needs to be retracted to drive the lifting plate 4 to move down. At this time, the downward movement of the lifting plate 4 will drive the sampling toothed cylinder 7 to move down through the hydraulic motor 5 and make the sampling toothed cylinder 7 contact the road surface. Before the sampling toothed cylinder 7 contacts the road surface, the sealing cylinder 10 moves downward along with the telescopic rod 8 and the lifting cylinder 9. At this time, the sealing cylinder 10 will first contact the road surface. As the sampling toothed cylinder 7 continues to move downward, the sealing cylinder 10 will slide on the outside of the lifting cylinder 9, and the lifting cylinder 9 will continue to move downward. This allows the sealing cylinder 10 and the lifting cylinder 9 to be fitted outside the contact position between the sampling toothed cylinder 7 and the road surface. At the same time, during the sampling operation of the sampling toothed cylinder 7, water can be sprayed at the sampling position of the sampling toothed cylinder 7 to reduce dust. The occurrence of dust and the temperature during the operation of the sampling toothed cylinder 7 necessitate the water pump 13 to extract water from the water tank 12 and spray it out through the nozzle 11 to spray water onto the outside of the sampling toothed cylinder 7 and the road cutting sampling position, thereby achieving automatic dust reduction and cooling. At the same time, the working sampling toothed cylinder 7 is enclosed by the lifting cylinder 9 and the sealing cylinder 10, which can further improve the dust reduction effect and reduce the noise generated during the operation of the sampling toothed cylinder 7, improve the working environment of the testing equipment, and effectively improve the comfort of using the testing equipment.

[0025] This implementation example Figures 1-7 As shown, in order to solve the problem of the lack of automatic positioning in existing testing equipment, the process by which the testing equipment can automatically perform positioning is disclosed, achieving the effect of rapid automatic positioning. The specific content is as follows: The positioning structure includes a telescopic rod 15, which is fixedly installed on the lower end of the movable base plate 1. A positioning plate 27 is fixedly installed on the lower end of the telescopic rod 15. Two sets of positioning plates 27 and telescopic rods 15 are symmetrically arranged on the left and right sides of the lower end of the movable base plate 1. A push rod 16 is rotatably installed on the upper end of the positioning plate 27, and a push cylinder 17 is slidably installed on the upper end of the push rod 16. A return spring 18 is installed inside the push rod 16 near the push cylinder 17. The upper end of the push cylinder 17... A sliding plate 19 is rotatably mounted on the outside, and the sliding plate 19 is slidably connected to two sets of positioning rods 20 that are horizontally fixedly mounted on the lower end of the movable base plate 1. A lower moving rod 21 is fixedly mounted on the outside of the sliding plate 19, and the lower moving rod 21 is slidably connected to the lower squeezing cylinder 22 that is fixedly mounted on the lower end of the movable base plate 1. The lower squeezing cylinder 22 is connected to the upper squeezing cylinder 24 that is fixedly mounted on the upper end of the movable base plate 1 through an infusion tube 25. At the same time, the upper moving rod 23 that is slidably mounted inside the upper squeezing cylinder 24 is fixedly connected to the lower end of the lifting plate 4.

[0026] When using this highway construction pavement quality testing equipment, it is necessary to ensure the stability of the movable base plate 1 at the top of the highway to prevent it from moving and affecting the highway sampling and testing. During the sampling and testing process, the lifting plate 4 needs to move downwards. The downward movement of the lifting plate 4 will cause the upper moving rod 23 to move down inside the upper squeezing cylinder 24 and squeeze the liquid inside the upper squeezing cylinder 24. At this time, the liquid inside the upper squeezing cylinder 24 will enter the lower squeezing cylinder 22 through the infusion pipe 25. The pressure inside the lower squeezing cylinder 22 will increase and push the lower moving rod 21 to move. The movement of the lower moving rod 21 will... The sliding plate 19 will slide on the outside of the positioning rod 20, causing the sliding plate 19 to drive the push rod 16 and the push cylinder 17 to move. This allows the push rod 16 to push the positioning plate 27 down at the lower end of the telescopic rod 15 and into contact with the ground. Then, the push rod 16 and the push cylinder 17 continue to move, causing the return spring 18 to be compressed and contract, increasing the pressure of the push rod 16 on the positioning plate 27. The lower end of the positioning plate 27 is provided with an anti-slip groove to ensure its positioning effect on the testing equipment, effectively ensuring the stability of the testing equipment during operation, and thus ensuring the accuracy of the testing and sampling.

[0027] This implementation example Figures 1-8 As shown, in order to address the lack of automatic road cleaning functionality in existing inspection equipment, the process by which this inspection equipment can automatically clean the road surface is disclosed, achieving the effect of rapid automatic road cleaning. The specific details are as follows: The cleaning structure includes a vertical rod 28, which is fixedly installed at the lower end of the lifting plate 4. A connecting rod 29 is rotatably installed at the lower end of the vertical rod 28, and a connecting piece 30 is rotatably installed at the lower end of the connecting rod 29. A rotating round rod 31 is rotatably installed inside the connecting piece 30, and two sets of cleaning rods 32 are provided on the outer side of the lower end of the rotating round rod 31. A movable square rod 33 is slidably installed inside the upper end of the rotating round rod 31, and a movable part 34 is rotatably installed on the outer side of the movable square rod 33. The movable part 34 is slidably connected to a guide rod 35 fixedly installed at the lower end of the movable base plate 1. A driven gear 36 is fixedly installed at the upper end of the movable square rod 33, and the driven gear 36 is meshed with a fixed rack 37 fixedly installed at the lower end of the movable base plate 1.

[0028] When using this road surface quality testing equipment, the road surface at the lower end of the movable base plate 1 needs to be cleaned to reduce the impact of stones and other debris on the sampling and testing. Before the sealing cylinder 10 contacts the road surface during the downward movement of the lifting plate 4, the vertical rod 28 moves downward with the lifting plate 4 and pushes the connecting piece 30 downward through the connecting rod 29. The downward movement of the connecting piece 30 causes the rotating round rod 31 to move downward, which then moves downward outside the movable square rod 33. After the rotating round rod 31 contacts the ground, the connecting rod 29 pushes the connecting piece 30 to move horizontally. At this time, the connecting piece 30 drives the rotating round rod 31 and the movable square rod... 33 moves horizontally, while the driven gear 36 follows the moving square rod 33 and rotates under the action of the fixed rack 37. At this time, the moving part 34 slides on the outside of the guide rod 35. During the rotation of the driven gear 36, the cleaning rod 32 is driven to rotate through the rotating round rod 31 and the moving square rod 33. This allows the cleaning rod 32 to clean the road surface at the lower end of the sampling cylinder 7, and then the sealing cylinder 10 will come into contact with the road surface, ensuring the cleanliness of this position and reducing the impact of stones and other debris on the sampling and testing. By automatically cleaning the road surface, the convenience of using the testing equipment is effectively improved, and the overall practicality is increased.

[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A road surface quality testing device for highway construction, comprising a movable base plate (1) and a fixed handrail (2) fixedly installed on the upper end of the movable base plate (1), and a support wheel (26) is provided at the lower end of the movable base plate (1). Its features are: The upper end of the movable base plate (1) is provided with a hydraulic push rod (3), and the upper end of the hydraulic push rod (3) is provided with a lifting plate (4), and the upper end of the lifting plate (4) is provided with a hydraulic motor (5). The output end of the hydraulic motor (5) is provided with a rotating shaft (6), and the lower end of the rotating shaft (6) is provided with a sampling toothed cylinder (7). The sampling toothed cylinder (7) is located inside the movable base plate (1). The outer side of the sampling toothed cylinder (7) is provided with a sealing cylinder (10). The motion structure provided at the upper end of the movable base plate (1) enables the sealing cylinder (10) to seal the sampling toothed cylinder (7). The positioning structure provided at the lower end of the movable base plate (1) can control the positioning effect of the movable base plate (1). The cleaning structure provided at the lower end of the movable base plate (1) can automatically clean the upper surface of the road.

2. The road surface quality testing equipment according to claim 1, characterized in that: The motion structure includes a telescopic rod (8), which is fixedly installed at the lower end of the lifting plate (4). A lifting cylinder (9) is fixedly installed at the lower end of the telescopic rod (8). The lifting cylinder (9) is slidably connected to the sealing cylinder (10). The lifting cylinder (9) is located outside the rotating shaft (6), and nozzles (11) are provided at equal angles inside the lifting cylinder (9).

3. The road surface quality testing equipment according to claim 2, characterized in that: The upper end of the movable base plate (1) is provided with a water tank (12), and the outside of the water tank (12) is provided with a water pump (13) connected to the nozzle (11), and the limiting rod (14) provided at the upper end of the movable base plate (1) is slidably connected to the lifting plate (4).

4. The road surface quality testing equipment according to claim 3, characterized in that: The lifting cylinder (9) and the sealing cylinder (10) are located outside the sampling toothed cylinder (7), and the lower end face of the sealing cylinder (10) is lower than the lower end face of the sampling toothed cylinder (7), and the radius of the sealing cylinder (10) is greater than the radius of the lifting cylinder (9).

5. The road surface quality testing equipment according to claim 4, characterized in that: The positioning structure includes a telescopic rod two (15), which is fixedly installed at the lower end of the movable base plate (1). A positioning plate (27) is fixedly installed at the lower end of the telescopic rod two (15). At the same time, two sets of positioning plates (27) and telescopic rod two (15) are symmetrically arranged on the left and right sides of the lower end of the movable base plate (1).

6. The road surface quality testing equipment according to claim 5, characterized in that: A push rod (16) is rotatably mounted on the upper end of the positioning plate (27), and a push cylinder (17) is slidably mounted on the upper end of the push rod (16). A return spring (18) is provided inside the push rod (16) on the side close to the push cylinder (17). A sliding plate (19) is rotatably mounted on the outer side of the upper end of the push cylinder (17), and the sliding plate (19) is slidably connected to two sets of positioning rods (20) that are horizontally fixedly mounted on the lower end of the movable base plate (1).

7. A road surface quality testing device according to claim 6, characterized in that: A lower moving rod (21) is fixedly installed on the outside of the sliding plate (19), and the lower moving rod (21) is slidably connected to the lower squeezing cylinder (22) fixedly installed at the lower end of the movable base plate (1). The lower squeezing cylinder (22) is connected to the upper squeezing cylinder (24) fixedly installed at the upper end of the movable base plate (1) through the infusion pipe (25). At the same time, the upper moving rod (23) slidably installed inside the upper squeezing cylinder (24) is fixedly connected to the lower end of the lifting plate (4).

8. A road surface quality testing device according to claim 7, characterized in that: The cleaning structure includes a vertical rod (28), which is fixedly installed at the lower end of the lifting plate (4), and a connecting rod (29) is rotatably installed at the lower end of the vertical rod (28), while a connector (30) is rotatably installed at the lower end of the connecting rod (29).

9. A road surface quality testing device according to claim 8, characterized in that: The connector (30) has a rotating rod (31) rotatably mounted inside, and two sets of cleaning rods (32) are provided on the outer side of the lower end of the rotating rod (31), and a movable square rod (33) is slidably mounted inside the upper end of the rotating rod (31).

10. A road surface quality testing device according to claim 9, characterized in that: A movable component (34) is rotatably provided on the outer side of the movable square rod (33), and the movable component (34) is slidably connected to the guide rod (35) fixedly installed at the lower end of the movable base plate (1). A driven gear (36) is fixedly installed at the upper end of the movable square rod (33), and the driven gear (36) is meshed with the fixed rack (37) fixedly installed at the lower end of the movable base plate (1).

Images