A highway pavement detection device

Abstract

The utility model discloses a highway pavement detection device, including roof, the roof is opened and is equipped with the assembly opening, the laser displacement sensor for the road surface flatness detection is inlayed and equipped in the assembly opening, the detection end of laser displacement sensor extends to the below of roof, and the top of roof fixed mounting has the antenna, the detection device of the utility model advances along the detection path, and the laser displacement sensor carries out the road surface flatness detection at the same time, drives the double brush reverse rotation, and the advancing path of laser measuring point is swept in real time in synchronization, effectively removes the sundries such as road surface sandstone, dust and sweeps it to the detection path outside, avoids the detection data distortion caused by the foreign matter covering measuring point, improves the detection data reliability, at the same time, does not need manual advance cleaning, reduces the operation cost, improves the detection efficiency, avoids the secondary damage of fixed cleaning structure to the road surface.

Description

Technical Field

[0001] This utility model relates to the field of road surface inspection, specifically a highway road surface inspection device. Background Technology

[0002] Road surface smoothness is a core technical indicator for evaluating the construction quality, operational performance, and maintenance requirements of road surfaces. It directly affects driving safety and comfort, and is also directly related to the service life of the road structure. Currently, road surface smoothness detection devices based on laser displacement sensors have become the mainstream detection equipment in road acceptance and routine maintenance inspections due to their advantages such as high detection efficiency, high data accuracy, and continuous dynamic detection capabilities. They are widely used in road surface inspection operations on highways at all levels.

[0003] In actual field inspections, the road surface to be inspected often contains foreign objects such as sand, gravel, dust, and scattered debris. These foreign objects directly cover the detection path of the laser displacement sensor, causing the laser measuring point to collect elevation data of the foreign object surface rather than the true elevation of the road substrate. This directly leads to distorted inspection data and inaccurate road surface smoothness assessment results. In severe cases, foreign objects may even be misidentified as road defects such as potholes or bumps, significantly reducing the reliability and accuracy of the inspection data and misleading subsequent road quality assessments and maintenance plan formulation.

[0004] To address the aforementioned technical issues related to foreign object interference detection, existing technologies primarily employ two approaches: First, manual pre-sweeping of the detection section significantly increases labor and time costs, reduces overall efficiency, and fails to achieve real-time cleaning synchronized with the detection process. New debris may fall during the interval between cleaning and detection, failing to completely eliminate interference. Second, adding a fixed cleaning structure to the detection device. This type of fixed structure only effectively moves large-diameter debris and is less effective at cleaning fine debris such as sand and dust, leaving a large amount of debris remaining on the laser measuring point's path. This fails to resolve the foreign object interference problem. Furthermore, the rigid contact of the fixed scraper can easily scratch newly paved surfaces, posing a risk of secondary damage during the detection process. Utility Model Content

[0005] The purpose of this invention is to provide a highway pavement inspection device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a highway pavement detection device, comprising a top plate, wherein an assembly opening is provided on the top plate, and a laser displacement sensor for detecting pavement smoothness is embedded in the assembly opening, wherein the detection end of the laser displacement sensor extends to the bottom of the top plate, and an antenna is fixedly installed at the top of the top plate.

[0007] A connecting arm is fixedly installed at the bottom end of the top plate. A fixed box is fixedly installed at the end of the connecting arm away from the top plate. Two rotating disks are provided at the bottom end of the fixed box. A brush is fixedly installed at the bottom end of each of the two rotating disks. A driven bevel gear is fixedly installed at the top end of each of the two rotating disks. The driven bevel gear is located inside the fixed box. A round shaft is rotatably connected inside the fixed box. A drive bevel gear is fixedly sleeved at both ends of the round shaft. The drive bevel gear meshes with the driven bevel gear.

[0008] As a further embodiment of this utility model, a long shaft is rotatably connected to the bottom end of the top plate, a third toothed pulley is fixedly sleeved on the surface of the long shaft, and drive wheels are fixedly sleeved at both ends of the long shaft. The two drive wheels are arranged symmetrically on the left and right at the bottom end of the top plate. Two auxiliary wheels arranged symmetrically on the left and right are also rotatably connected to the bottom end of the top plate. The two drive wheels and the two auxiliary wheels are arranged symmetrically on the front and back at the bottom end of the top plate.

[0009] As a further embodiment of this utility model, a drive motor is fixedly installed at the bottom end of the top plate, and a rotating shaft is fixedly installed at the output end of the drive motor. The rotating shaft passes through the connecting arm, and a second toothed pulley and a fourth toothed pulley are fixedly sleeved on the outer wall of the rotating shaft. The second toothed pulley is located inside the connecting arm, and a first toothed pulley is fixedly sleeved on the surface of the round shaft. The second toothed pulley is connected to the first toothed pulley via a drive toothed belt, and the fourth toothed pulley is connected to the third toothed pulley via a transmission toothed belt.

[0010] As a further embodiment of this utility model, a protective shell is provided at the bottom of the top plate. The protective shell is fixedly connected to the top plate by a connecting rod. Two round holes are opened on the protective shell. The rotating shaft and the long shaft pass through the two round holes respectively, and the third toothed pulley, the fourth toothed pulley and the transmission toothed belt are all located inside the protective shell.

[0011] As a further embodiment of this utility model, a power motor is fixedly installed on the surface of the top plate, and a gear is threadedly connected to the output end of the power motor. The bottom end of the gear is slidably connected to the top end of the top plate. A vertical shaft is fixedly installed on the top end of the auxiliary wheel, and a transmission gear is fixedly installed on the top end of the vertical shaft after passing through the top plate. The transmission gear meshes with the gear.

[0012] As a further embodiment of this utility model, a fixing shell is fixedly installed on the top of the top plate, and the fixing shell covers the outside of the rack, transmission gear and vertical shaft.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The detection device of this utility model moves along the detection path and the laser displacement sensor performs road surface smoothness detection. At the same time, it drives the double brushes to rotate in opposite directions and simultaneously cleans the path of the laser measuring point in real time. This effectively removes sand, dust and other debris from the road surface and sweeps them outside the detection path, avoiding the distortion of detection data caused by foreign objects covering the measuring point and improving the reliability of the detection data. At the same time, there is no need for manual cleaning in advance, which reduces operating costs, improves detection efficiency, and avoids secondary damage to the road surface caused by the fixed cleaning structure.

[0015] 2. The detection device of this utility model, through the linkage structure of the power motor, screw, rack and transmission gear, can synchronously drive the auxiliary wheels on both sides to deflect in the same direction, so as to realize the flexible steering of the device and conveniently adapt to the path adjustment of different detection sections; multiple sets of enclosed protective shells can effectively protect the internal transmission components, reduce the wear of outdoor dust and sand on the transmission structure, extend the service life of the device, and improve the stability of outdoor detection operations. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a cross-sectional structural diagram of the rotating shaft of this utility model;

[0019] Figure 4 This is a cross-sectional structural diagram of the protective shell of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the drive bevel gear of this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the toothed rod of this utility model.

[0022] In the diagram: 1. Top plate; 2. Connecting arm; 3. Fixed box; 4. Rotating disk; 5. Short shaft; 6. Driven bevel gear; 7. Driven bevel gear; 8. Round shaft; 9. First toothed pulley; 10. Brush; 11. Drive motor; 12. Rotating shaft; 13. Second toothed pulley; 14. Drive toothed belt; 15. Fixed shell; 16. Long shaft; 17. Drive wheel; 18. Third toothed pulley; 19. Auxiliary wheel; 20. Fourth toothed pulley; 21. Transmission toothed belt; 22. Protective shell; 23. Power motor; 24. Screw; 25. Toothed rod; 26. Transmission gear; 27. Vertical shaft; 28. Connecting rod; 29. ​​Laser displacement sensor. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5 A road surface inspection device includes a top plate 1, an assembly opening on the top plate 1, a laser displacement sensor 29 for road surface smoothness detection is embedded in the assembly opening, the detection end of the laser displacement sensor 29 extends to the bottom of the top plate 1, and an antenna is fixedly installed on the top of the top plate 1.

[0025] A connecting arm 2 is fixedly installed at the bottom of the top plate 1. A fixed box 3 is fixedly installed at the end of the connecting arm 2 away from the top plate 1. Two rotating disks 4 are provided at the bottom of the fixed box 3. A brush 10 is fixedly installed at the bottom of each of the two rotating disks 4. A driven bevel gear 6 is fixedly installed at the top of each of the two rotating disks 4. The driven bevel gear 6 is located inside the fixed box 3. A round shaft 8 is rotatably connected inside the fixed box 3. Both ends of the round shaft 8 are fixedly sleeved with driving bevel gears 7. The driving bevel gear 7 meshes with the driven bevel gear 6. Specifically, a short shaft 5 is fixedly installed at the top of the rotating disk 4. The top of the short shaft 5 passes through the bottom of the fixed box 3 and extends into the interior of the fixed box 3. The short shaft 5 is rotatably connected to the fixed box 3. The top of the short shaft 5 is fixedly sleeved inside the driven bevel gear 6.

[0026] More specifically, the top plate 1 serves as the core mounting base of this device, providing stable mounting support for each functional structure. The laser displacement sensor 29, embedded in the mounting opening of the top plate 1, can collect road elevation data through its downward-facing detection end. In conjunction with the antenna at the top of the top plate 1, it can achieve real-time transmission of detection data. The connecting arm 2 and the fixed box 3 form a closed transmission mounting cavity, providing protection for the internal meshing transmission of the drive bevel gear 7 and the driven bevel gear 6. The round shaft 8 provides coaxial mounting support for the first toothed pulley 9 and the drive bevel gear 7. The rotational power connected to the first toothed pulley 9 can drive the drive bevel gears 7 at both ends to rotate synchronously. In turn, through the meshing driven bevel gear 6, the short shaft 5, and the rotating disk 4, it can drive the two sets of brushes 10 to rotate synchronously in opposite directions, providing a stable basis for the action execution of cleaning debris along the detection path.

[0027] like Figures 1-6 As shown, a long shaft 16 is rotatably connected to the bottom end of the top plate 1. A third toothed pulley 18 is fixedly sleeved on the surface of the long shaft 16, and drive wheels 17 are fixedly sleeved at both ends of the long shaft 16. The two drive wheels 17 are arranged symmetrically on the left and right sides at the bottom end of the top plate 1. Two auxiliary wheels 19 are also rotatably connected to the bottom end of the top plate 1. The two drive wheels 17 and the two auxiliary wheels 19 are arranged symmetrically on the front and back sides at the bottom end of the top plate 1. Specifically, the long shaft 16 provides coaxial mounting support for the third toothed pulley 18 and the drive wheels 17. The rotational power connected to the third toothed pulley 18 drives the drive wheels 17 at both ends to rotate synchronously. Together with the two sets of auxiliary wheels 19 at the bottom end of the top plate 1, a stable walking support structure is formed, which provides a foundation for the smooth movement of the device along the detection path and ensures that the laser displacement sensor 29 can realize continuous dynamic road surface detection.

[0028] like Figures 1-5 As shown, a drive motor 11 is fixedly installed at the bottom of the top plate 1. A rotating shaft 12 is fixedly installed at the output end of the drive motor 11. The rotating shaft 12 passes through the connecting arm 2. A second toothed pulley 13 and a fourth toothed pulley 20 are fixedly sleeved on the outer wall of the rotating shaft 12. The second toothed pulley 13 is located inside the connecting arm 2. A first toothed pulley 9 is fixedly sleeved on the surface of the round shaft 8. The second toothed pulley 13 is connected to the first toothed pulley 9 through a drive toothed belt 14. The fourth toothed pulley 20 is connected to the third toothed pulley 18 through a transmission toothed belt 21. Specifically, the drive motor 11 provides a unified power source for the movement and cleaning actions of the device. Its output shaft 12 can synchronously drive the second toothed pulley 13 and the fourth toothed pulley 20 to rotate coaxially. The drive toothed belt 14 realizes the transmission connection between the second toothed pulley 13 and the first toothed pulley 9, transmitting power for the cleaning action. The drive toothed belt 21 realizes the transmission connection between the fourth toothed pulley 20 and the third toothed pulley 18, transmitting power for the movement of the device, thereby realizing the synchronous linkage of the movement and cleaning actions of the device.

[0029] like Figure 1 , Figure 3 , Figure 4 As shown, a protective shell 22 is provided at the bottom of the top plate 1. The protective shell 22 is fixedly connected to the top plate 1 by a connecting rod 28. Two round holes are opened on the protective shell 22, through which the rotating shaft 12 and the long shaft 16 pass respectively. The third toothed pulley 18, the fourth toothed pulley 20 and the transmission toothed belt 21 are all located inside the protective shell 22. Specifically, the connecting rod 28 is used to stably fix the protective shell 22 to the bottom of the top plate 1. The protective shell 22 forms a closed protective cavity, which encloses the third toothed pulley 18, the fourth toothed pulley 20 and the transmission toothed belt 21 inside. This can effectively isolate dust, sand and gravel debris at the testing site, reduce wear and jamming problems caused by foreign objects in the transmission components, and improve the operational stability and service life of the device's travel transmission structure.

[0030] like Figures 1-4 , Figure 6 As shown, a power motor 23 is fixedly installed on the surface of the top plate 1. A gear 25 is threadedly connected to the output end of the power motor 23. The bottom end of the gear 25 is slidably connected to the top end of the top plate 1. A vertical shaft 27 is fixedly installed on the top end of the auxiliary wheel 19. A transmission gear 26 is fixedly installed after the top end of the vertical shaft 27 passes through the top plate 1. The transmission gear 26 meshes with the gear 25. Specifically, a screw 24 is fixedly connected to the output end of the power motor 23. The outer surface of the screw 24 is threadedly connected to the inner surface of the gear 25.

[0031] More specifically, the power motor 23 provides the power source for the steering action of the device. The screw 24 at its output end can convert the rotational power into the horizontal lateral movement of the rack 25. Through the meshing transmission of the rack 25 and the two sets of transmission gears 26, the two sets of vertical shafts 27 are driven to rotate synchronously in the same direction, which in turn drives the two sets of auxiliary wheels 19 to deflect synchronously, so as to realize the flexible adjustment of the device's travel direction and precise steering.

[0032] like Figures 1-4 As shown, a fixed housing 15 is fixedly installed on the top of the top plate 1. The fixed housing 15 covers the outside of the rack 25, the transmission gear 26 and the vertical shaft 27. Specifically, the end of the screw 24 away from the power motor 23 passes through the surface of the fixed housing 15 and extends into the interior of the fixed housing 15, and the screw 24 is rotatably connected to the interior of the fixed housing 15.

[0033] More specifically, the fixed shell 15 is fixed to the top of the top plate 1, enclosing the rack 25, transmission gear 26 and vertical shaft 27 inside to form a closed protective space. This can effectively isolate dust, rain and debris in the outdoor testing environment, and prevent the steering transmission components from jamming, rusting and wear due to the influence of the external environment, thereby improving the operational stability and service life of the steering mechanism.

[0034] Working principle: First, the operator places the device at the starting point of the road surface to be inspected, completes the preset detection parameters, and starts the device. At this time, the drive motor 11 and the laser displacement sensor 29 start synchronously. The drive motor 11 drives the rotating shaft 12 fixed at its output end to rotate synchronously. At this time, the rotating shaft 12 will simultaneously drive the second toothed pulley 13 fixedly sleeved on its surface and the fourth toothed pulley 20 fixedly sleeved at its end to rotate synchronously. Since the fourth toothed pulley 20 is connected to the third toothed pulley 18 through the transmission toothed belt 21, the rotation of the fourth toothed pulley 20 will drive the third toothed pulley 18 through the transmission toothed belt 21. The third toothed pulley 18 rotates synchronously, which in turn drives the long shaft 16 to rotate synchronously. At this time, the drive wheels 17 at both ends of the long shaft 16 rotate synchronously and cooperate with the two sets of auxiliary wheels 19 rotatably connected to the bottom of the top plate 1, driving the entire device to move at a constant speed along the preset detection path. Meanwhile, the laser displacement sensor 29, after being started, continuously collects the elevation data of the road surface below in real time during the movement of the device, and transmits the collected detection data to the operator's mobile terminal in real time through the antenna at the top of the top plate 1, thus completing the dynamic continuous detection of road surface flatness.

[0035] Since the second toothed pulley 13 is connected to the first toothed pulley 9 via the drive toothed belt 14, when the rotating shaft 12 drives the second toothed pulley 13 to rotate, the second toothed pulley 13 will drive the first toothed pulley 9 to rotate synchronously via the drive toothed belt 14. In turn, the first toothed pulley 9 will drive the round shaft 8 to rotate stably inside the fixed box 3. At this time, the drive bevel gears 7 fixedly sleeved at both ends of the round shaft 8 will rotate synchronously. Since the drive bevel gears 7 and the driven bevel gears 6 mesh with each other, the two sets of drive bevel gears 7 will drive the two sets of driven bevel gears 6 to rotate synchronously in opposite directions. Then, the driven bevel gears 6 will drive the rotating disk 4 to rotate synchronously via the short shaft 5. This will cause the brushes 10 fixed at the bottom of the two sets of rotating disks 4 to rotate synchronously in opposite directions. During the movement of the device, the sand, dust and other debris on the path of the laser displacement sensor 29 will be continuously cleaned in real time, and the debris will be cleaned to both sides of the path of the device, so that there are no debris obstructing the detection end of the laser displacement sensor 29.

[0036] When the device needs to adjust its travel path or turn, the power motor 23 starts. At this time, the power motor 23 drives the screw 24, which is fixedly sleeved at its output end, to rotate synchronously. Since the outer surface of the screw 24 is sleeved with the internal thread of the gear 25, and the bottom end of the gear 25 is slidably connected to the top end of the top plate 1, the rotation of the screw 24 will drive the gear 25 to move horizontally along the top end of the top plate 1. Since the gear 25 meshes with the two sets of transmission gears 26, the horizontal movement of the gear 25 will drive the two sets of transmission gears 26 to rotate synchronously in the same direction. Then, through the vertical shaft 27 fixed at the bottom end of the transmission gear 26, the two sets of auxiliary wheels 19 will be driven to deflect synchronously, thereby realizing the flexible adjustment and turning of the device's travel direction.

[0037] Furthermore, the enclosed design of the connecting arm 2 and the fixed box 3 effectively protects the driven bevel gear 6, driving bevel gear 7, round shaft 8, first toothed pulley 9, second toothed pulley 13 and driving toothed belt 14 inside. The enclosed design of the protective shell 22 effectively protects the third toothed pulley 18, fourth toothed pulley 20 and transmission toothed belt 21 inside. The design of the fixed shell 15 effectively protects the rack 25, transmission gear 26 and vertical shaft 27 inside. This isolates dust, sand and gravel debris from the testing site, reduces wear on transmission components, and improves the operational stability and service life of the device.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A highway pavement detection device comprising a top plate (1), characterized in that: An assembly opening is provided on the top plate (1), and a laser displacement sensor (29) for road surface smoothness detection is embedded in the assembly opening. The detection end of the laser displacement sensor (29) extends to the bottom of the top plate (1), and an antenna is fixedly installed on the top of the top plate (1). A connecting arm (2) is fixedly installed at the bottom end of the top plate (1). A fixed box (3) is fixedly installed at the end of the connecting arm (2) away from the top plate (1). Two rotating disks (4) are provided at the bottom end of the fixed box (3). A brush (10) is fixedly installed at the bottom end of each of the two rotating disks (4). A driven bevel gear (6) is fixedly installed at the top end of each of the two rotating disks (4). The driven bevel gear (6) is located inside the fixed box (3). A round shaft (8) is rotatably connected inside the fixed box (3). A drive bevel gear (7) is fixedly sleeved at both ends of the round shaft (8). The drive bevel gear (7) meshes with the driven bevel gear (6).

2. The highway pavement detection device according to claim 1, characterized in that: The bottom end of the top plate (1) is rotatably connected to a long shaft (16), and a third toothed pulley (18) is fixedly sleeved on the surface of the long shaft (16). Both ends of the long shaft (16) are fixedly sleeved with drive wheels (17). The two drive wheels (17) are arranged symmetrically on the left and right sides at the bottom end of the top plate (1). The bottom end of the top plate (1) is also rotatably connected to two auxiliary wheels (19) arranged symmetrically on the left and right sides. The two drive wheels (17) and the two auxiliary wheels (19) are arranged symmetrically on the front and back sides at the bottom end of the top plate (1).

3. A highway pavement inspection device according to claim 2, characterized in that: A drive motor (11) is fixedly installed at the bottom end of the top plate (1). A rotating shaft (12) is fixed at the output end of the drive motor (11). The rotating shaft (12) passes through the connecting arm (2). A second toothed pulley (13) and a fourth toothed pulley (20) are fixedly sleeved on the outer wall of the rotating shaft (12). The second toothed pulley (13) is located inside the connecting arm (2). A first toothed pulley (9) is fixedly sleeved on the surface of the round shaft (8). The second toothed pulley (13) is connected to the first toothed pulley (9) through a drive toothed belt (14). The fourth toothed pulley (20) is connected to the third toothed pulley (18) through a drive toothed belt (21).

4. A highway pavement inspection device according to claim 3, characterized in that: The bottom end of the top plate (1) is provided with a protective shell (22). The protective shell (22) is fixedly connected to the top plate (1) through a connecting rod (28). The protective shell (22) has two round holes. The rotating shaft (12) and the long shaft (16) pass through the two round holes respectively. The third toothed pulley (18), the fourth toothed pulley (20) and the transmission toothed belt (21) are all located inside the protective shell (22).

5. A highway pavement inspection device according to claim 4, characterized in that: A power motor (23) is fixedly installed on the surface of the top plate (1). A rack (25) is threaded onto the output end of the power motor (23). The bottom end of the rack (25) is slidably connected to the top end of the top plate (1). A vertical shaft (27) is fixedly installed on the top end of the auxiliary wheel (19). A transmission gear (26) is fixedly installed on the top end of the vertical shaft (27) after passing through the top plate (1). The transmission gear (26) meshes with the rack (25).

6. A highway pavement inspection device according to claim 5, characterized in that: A fixed shell (15) is fixedly installed on the top of the top plate (1), and the fixed shell (15) covers the outside of the rack (25), the transmission gear (26) and the vertical shaft (27).

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