Pavement flatness detection device

Abstract

The utility model relates to the technical field of road surface detection equipment, and discloses a road surface flatness detection device which comprises a frame, a plurality of walking wheels are connected to the frame, one end of the frame is connected with a traction mechanism used for being connected with a traction vehicle, a sweeping mechanism is arranged on one side, close to the traction mechanism, of the frame, and the sweeping mechanism is connected with the walking wheels. A detection mechanism is arranged on one side, far away from the traction mechanism, of the frame, and the detection surface of the detection mechanism covers the cross section of the frame; the road surface detection efficiency and the accuracy of detection data are effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of road surface testing equipment, specifically a road surface smoothness testing device. Background Technology

[0002] Smoothness is one of the important indicators of road construction quality and service level. Uneven road surfaces will increase driving resistance and cause additional vibration to vehicles. This vibration will cause bumpy driving, affecting driving speed and safety, driving smoothness and passenger comfort. At the same time, the vibration will also exert impact force on the road surface, thereby aggravating road surface damage and tire wear. Uneven road surfaces will also accumulate rainwater, accelerating road surface deterioration. Therefore, the detection and evaluation of smoothness is a very important part of highway construction and maintenance.

[0003] Chinese utility model patent CN220116974U discloses a road surface smoothness tester, including a base and support seat for support, movable wheels for easy movement of the base and support seat, and a handle for easy pushing by relevant personnel. The handle is fixedly connected to the support seat. It also includes a sweeping mechanism. This utility model belongs to the field of road surface testing technology. In this utility model, after the device is transported to the road surface to be tested, the limiting plate is turned to adjust the sweeping roller brush to contact the road surface. Pushing the handle causes the sweeping roller brush to rotate under the action of motor A to sweep away soil and stones on the road surface. The dust raised after sweeping is sucked up by the air intake through the fan 17 and collected into the air guide hood 12. The smoothness of the road surface after sweeping is tested by the testing mechanism, so as to avoid the stones and soil placed on the road surface to be tested from affecting the test results.

[0004] However, the highway pavement smoothness tester in the aforementioned patent still has certain problems in use. During the test, only a small portion of the pavement surface in contact with the road surface is detected, while the majority of the area below the support is ignored. This results in low accuracy and low efficiency of the pavement smoothness test data. Utility Model Content

[0005] The purpose of this invention is to provide a road surface smoothness detection device that effectively improves the efficiency of road surface inspection and the accuracy of inspection data.

[0006] This utility model is implemented as follows:

[0007] A road surface smoothness detection device includes a frame with multiple wheels connected to it. One end of the frame is connected to a traction mechanism for connecting to a traction vehicle. A sweeping mechanism is provided on the side of the frame near the traction mechanism, and a detection mechanism is provided on the side of the frame away from the traction mechanism. The detection surface of the detection mechanism covers the cross-section of the frame.

[0008] The detection mechanism includes multiple sliding brackets evenly distributed across the cross-section of the vehicle frame. The vehicle frame has sliding holes matching the sliding brackets, which extend from top to bottom through the frame. The sliding brackets are slidably connected to the vehicle frame via these holes. A limiting ring is fixedly connected to each sliding bracket, positioned on the lower side of the vehicle frame. A spring is positioned between the limiting ring and the vehicle frame, with both ends of the spring fixedly connected to the vehicle frame and the sliding bracket, respectively. A roller is rotatably connected to the bottom of each sliding bracket via a pivot. In the spring's natural state, the roller is lower than the traveling wheel. An infrared ranging sensor is fixedly connected to the top of the sliding bracket. A ranging baffle is mounted above the infrared ranging sensor and is fixedly connected to the vehicle frame.

[0009] Furthermore, the traction mechanism includes a traction seat fixedly connected to one end of the vehicle frame. The traction seat has an opening at the end away from the vehicle frame, and a pin is movably inserted into the opening end of the traction seat. The pin passes through the upper and lower side walls of the traction seat.

[0010] Furthermore, the cleaning mechanism includes an air guide hood fixedly connected to the vehicle frame, and a suction cup disposed at the bottom of the vehicle frame. The suction cup is connected to the air guide hood through a pipe. A fan is installed on the air guide hood. A collection box is disposed between the fan and the pipe. A filter screen is disposed between the fan and the collection box. The filter screen is connected to the air guide hood. The outlet end of the fan and the pipe are offset. A cleaning side door for picking up and placing the collection box is provided on one side of the air guide hood.

[0011] Furthermore, the fan is fixedly installed on the upper side of the air guide shroud, and the filter screen is inclinedly disposed at the top of the air guide shroud near one corner of the fan.

[0012] Furthermore, brushes are provided on the left and right sides of the suction cup, and the brushes are rotatably connected to the frame. The two brushes rotate in opposite directions and are each connected to a drive motor.

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

[0014] In practical applications, workers connect a towing vehicle to the frame using a towing mechanism. The towing vehicle then pulls the frame along the road surface whose flatness needs to be measured. During this movement, a sweeping mechanism removes stones and debris from the road surface. The testing mechanism then performs a flatness test on the cleaned surface, minimizing the impact of stones and debris on the test and effectively improving the accuracy of the flatness measurement. In its natural state, the rollers are positioned below the traveling wheels. During the test, the rollers, evenly distributed below the cross-section of the frame, contact the road surface, pushing the sliding bracket upwards. On flat and raised surfaces, the spring is compressed to different degrees by the limiting ring. On recessed surfaces, the elasticity of the spring moves the sliding bracket downwards to reset, allowing the sliding bracket to slide up and down within the sliding hole of the frame according to the road conditions. At the same time, an infrared ranging sensor detects the distance between the top of the sliding bracket and the ranging baffle, obtaining detection data for flat, raised, and recessed surfaces. The detection data covers most of the road conditions traversed by the frame, improving the accuracy of the detection data and increasing the road area detected in one operation, effectively improving detection efficiency. This utility model effectively improves road detection efficiency and the accuracy of detection data. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

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

[0017] Figure 2 This is a side view of the structural schematic diagram of this utility model;

[0018] Figure 3 This is a cross-sectional view of the structural schematic diagram of this utility model.

[0019] Reference numerals: 1. Frame; 2. Wheel; 3. Sliding bracket; 4. Sliding hole; 5. Limiting ring; 6. Spring; 7. Roller; 8. Infrared ranging sensor; 9. Ranging baffle; 10. Traction seat; 11. Pin; 12. Air guide cover; 13. Suction cup; 14. Pipe; 15. Collection box; 16. Filter screen; 17. Fan; 18. Cleaning side door; 19. Brush; 20. Drive motor. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] Please see Figures 1 to 3 A road surface smoothness detection device includes a frame 1, on which a plurality of wheels 2 are connected. One end of the frame 1 is connected to a traction mechanism for connecting to a traction vehicle. A sweeping mechanism is provided on the side of the frame 1 near the traction mechanism, and a detection mechanism is provided on the side of the frame 1 away from the traction mechanism. The detection surface of the detection mechanism covers the cross-section of the frame 1.

[0022] The detection mechanism includes multiple sliding brackets 3, which are evenly distributed across the cross-section of the vehicle frame 1. The vehicle frame 1 has sliding holes 4 that match the sliding brackets 3, which penetrate the vehicle frame 1 from top to bottom. The sliding brackets 3 are slidably connected to the vehicle frame 1 through the sliding holes 4. A limiting ring 5 is fixedly connected to the sliding bracket 3 and is located on the lower side of the vehicle frame 1. A spring 6 is provided between the limiting ring 5 and the vehicle frame 1. The two ends of the spring 6 are fixedly connected to the vehicle frame 1 and the sliding bracket 3, respectively. A roller 7 is rotatably connected to the bottom of the sliding bracket 3 via a pivot. In the natural state of the spring 6, the roller 7 is lower than the traveling wheel 2. An infrared ranging sensor 8 is fixedly connected to the top of the sliding bracket 3. A ranging baffle 9 is provided above the infrared ranging sensor 8 and is fixedly connected to the vehicle frame 1.

[0023] In practical applications, workers connect a traction vehicle to the frame 1 via a traction mechanism. The traction vehicle then pulls the frame 1 along the road surface whose flatness is to be measured. During this movement, a sweeping mechanism removes stones or debris from the road surface. The testing mechanism then performs a flatness test on the cleaned road surface, minimizing the impact of stones and debris on the test and effectively improving the accuracy of the flatness test. In its natural state, the spring 6 lowers the rollers 7 below the traveling wheels 2. During the test, the rollers 7, evenly distributed below the cross-section of the frame 1, contact the road surface, pushing the sliding bracket 3 upwards. On flat and raised surfaces, the spring 6 is compressed to different degrees by the limiting ring 5. On concave surfaces, the elasticity of the spring 6 moves the sliding bracket 3 downward to reset, allowing the sliding bracket 3 to slide up and down within the sliding hole 4 of the frame 1 according to the road conditions. At the same time, the infrared ranging sensor 8 detects the distance between the top of the sliding bracket 3 and the ranging baffle 9, obtaining detection data for flat, raised, and concave surfaces. The detection data covers most of the road conditions traversed by the frame 1, improving the accuracy of the detection data and increasing the road surface area detected in one operation, effectively improving detection efficiency. This utility model effectively improves the efficiency of road surface detection and the accuracy of detection data.

[0024] Please see Figures 1 to 3 The traction mechanism includes a traction seat 10 fixedly connected to one end of the frame 1. The traction seat 10 has an opening at one end away from the frame 1, and a pin 11 is movably inserted into the opening end of the traction seat 10. The pin 11 passes through the upper and lower side walls of the traction seat 10.

[0025] The worker moves the frame 1 so that the hook on the towing vehicle is inserted into the opening end of the towing seat 10. Then, the pin 11 is inserted and passes through the upper side wall of the towing seat 10, the hook of the towing vehicle, and the lower side wall of the towing seat 10 in sequence, thus completing the connection between the towing vehicle and the frame 1, effectively improving the convenience for the worker to connect the frame 1 to the towing vehicle.

[0026] Please see Figures 1 to 3The cleaning mechanism includes an air guide shroud 12 fixedly connected to the frame 1, and a suction cup 13 disposed at the bottom of the frame 1. The suction cup 13 is connected to the air guide shroud 12 through a pipe 14. A fan 17 is installed on the air guide shroud 12. A collection box 15 is disposed between the fan 17 and the pipe 14. A filter screen 16 is disposed between the fan 17 and the collection box 15. The filter screen 16 is connected to the air guide shroud 12. The outlet end of the fan 17 and the pipe 14 are offset. A cleaning side door 18 for taking out and putting in the collection box 15 is provided on one side of the air guide shroud 12. The pipe 14, which connects the suction cup 13 and the air guide shroud 12, is vertically installed through the frame 1 and extends beyond the upper surface of the frame 1. The air guide shroud 12 is connected to the external environment through the fan 17. The fan 17 rotates to draw out the air inside the air guide shroud 12, creating a negative pressure inside the air guide shroud 12. Under the action of negative pressure, the suction cup 13 sucks the debris on the ground into the pipe 14. The debris passes through the pipe 14, is filtered by the filter screen 16, and enters the collection box 15 for collection under the action of gravity. The collection box 15 can be accessed and removed by the cleaning side door 18 and cleaned regularly. The edge of the cleaning side door 18 can be sealed with sealing silicone.

[0027] Please see Figures 1 to 3 The fan 17 is fixedly installed on the upper side of the air guide shroud 12, and the filter screen 16 is inclinedly arranged on the top of the air guide shroud 12 near a corner of the fan 17.

[0028] The inclined filter 16 increases the air passage area, and the debris filtered by the filter 16 is more likely to fall into the collection box 15 for collection.

[0029] Please see Figures 1 to 3 The suction cup 13 is provided with brushes 19 on its left and right sides respectively. The brushes 19 are rotatably connected to the frame 1. The two brushes 19 rotate towards each other and are respectively connected to drive motors 20.

[0030] Two drive motors 20 drive the corresponding brushes 19 to rotate. The two brushes 19 rotate in opposite directions and towards each other, collecting road debris on the side of the suction cup 13 and placing it below the suction cup 13, thus expanding the debris cleaning range and ensuring the cleanliness of the road surface within the detection area.

[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A road surface smoothness detection device, characterized in that: Includes a frame (1), on which a plurality of wheels (2) are connected, one end of the frame (1) is connected to a traction mechanism for connecting to a traction vehicle, a cleaning mechanism is provided on the side of the frame (1) near the traction mechanism, and a detection mechanism is provided on the side of the frame (1) away from the traction mechanism, the detection surface of the detection mechanism covering the cross section of the frame (1); The detection mechanism includes multiple sliding brackets (3), which are evenly distributed across the cross-section of the frame (1). The frame (1) has sliding holes (4) that match the sliding brackets (3). The sliding holes (4) penetrate the frame (1) from top to bottom. The sliding brackets (3) are slidably connected to the frame (1) through the sliding holes (4). A limiting ring (5) is fixedly connected to the sliding brackets (3). The limiting ring (5) is located on the lower side of the frame (1). The limiting ring (5) is fixed to the frame. A spring (6) is provided between (1), and the two ends of the spring (6) are fixedly connected to the frame (1) and the sliding bracket (3) respectively. The bottom of the sliding bracket (3) is rotatably connected to a roller (7) through a pivot. In the natural state of the spring (6), the roller (7) is lower than the walking wheel (2). An infrared ranging sensor (8) is fixedly connected to the top of the sliding bracket (3). A ranging baffle (9) is provided above the infrared ranging sensor (8). The ranging baffle (9) is fixedly connected to the frame (1).

2. The road surface smoothness detection device according to claim 1, characterized in that, The traction mechanism includes a traction seat (10) fixedly connected to one end of the frame (1). The traction seat (10) has an opening at one end away from the frame (1). A pin (11) is movably inserted into one end of the opening of the traction seat (10). The pin (11) passes through the upper and lower side walls of the traction seat (10).

3. The road surface smoothness detection device according to claim 1, characterized in that, The cleaning mechanism includes an air guide hood (12) fixedly connected to the frame (1) and a suction cup (13) disposed at the bottom of the frame (1). The suction cup (13) is connected to the air guide hood (12) through a pipe (14). The air guide hood (12) is equipped with a fan (17). A collection box (15) is disposed between the fan (17) and the pipe (14). A filter screen (16) is disposed between the fan (17) and the collection box (15). The filter screen (16) is connected to the air guide hood (12). The outlet end of the fan (17) and the pipe (14) are offset. A cleaning side door (18) for taking out and putting in the collection box (15) is provided on one side of the air guide hood (12).

4. The road surface smoothness detection device according to claim 3, characterized in that, The fan (17) is fixedly installed on the upper side of the air guide shroud (12), and the filter (16) is inclinedly arranged on the top of the air guide shroud (12) near a corner of the fan (17).

5. A road surface smoothness testing device according to claim 3, characterized in that, The suction cup (13) is provided with brushes (19) on its left and right sides respectively. The brushes (19) are rotatably connected to the frame (1). The two brushes (19) rotate towards each other and are respectively connected to drive motors (20).

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