Asphalt pavement flatness detection device
By designing cleaning components in the pavement flatness detection device and using bristles to clean the fine particles on the pavement, the problem of particles affecting accuracy during the detection process is solved, and the accuracy of detection is improved.
Patent Information
- Application Number
- CN202421975968.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-15
AI Technical Summary
When using the pavement flatness detection device, due to the possibility of fine asphalt particles and other debris on the asphalt pavement, the accuracy of the measurement wheel detection is affected.
A asphalt pavement flatness detection device is designed, including a cleaning assembly, a sliding chute, a moving rod, a grooved mounting block, a rectangular block and a bristle. The driving mechanism moves the moving rod back and forth in the slide chute, and the bristles come into contact with the road surface to clean, and remove fine particles on the road surface.
It effectively avoids the impact of the measurement wheel detection results of small asphalt particles, and improves the accuracy of asphalt pavement flatness detection.
Smart Images
Figure CN222990540U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of road surface flatness detection devices, in particular to an asphalt road surface flatness detection device. Background Art
[0002] The road surface flatness detection device is used for detecting the flatness of asphalt roads. The road surface flatness detection device consists of a vehicle body, a mounting frame, sensors (displacement sensors and Hall sensors), a sliding rod, a measuring wheel, a first spring, and a connecting rod. When detecting the flatness of an asphalt road surface, the vehicle body is connected to a pickup truck through the connecting rod and travels on the measured section at a certain speed (such as 5 km / h, but not exceeding 12 km / h). The displacement sensor and the Hall sensor continuously collect data. The displacement sensor mainly collects the relative displacement data between the road surface and the measuring wheel, while the Hall sensor is responsible for collecting the driving speed and mileage data of the vehicle. These data are transmitted to the control system for processing in real time. After receiving the data collected by the sensors, the control system converts the displacement data collected by the displacement sensor into the unevenness deviation value of the road surface; then, these deviation values are automatically recorded at a predetermined sampling interval (such as every 10 cm); finally, the collected data are processed using statistical methods (such as calculating the standard deviation) to obtain an index reflecting the flatness of the road surface. The sliding rod on the mounting frame is pressed by the first spring, so that the measuring wheel is in full contact with the ground.
[0003] The inventor found in daily work that when the road surface flatness detection device is in use, since there may be some small asphalt particles and other sundries on the asphalt road surface, the vehicle body moves on the asphalt road surface, causing the measuring wheel to pass over the asphalt particles, which affects the data measured by the measuring wheel, and may further affect the accuracy of the asphalt road surface flatness detection. Summary of the Utility Model
[0004] The purpose of the utility model is to solve the problem that in the actual use process, since there may be some small asphalt particles and other sundries on the asphalt road surface, the vehicle body moves on the asphalt road surface, causing the measuring wheel to pass over the asphalt particles, which affects the data measured by the measuring wheel, and may further affect the accuracy of the asphalt road surface flatness detection, and to propose an asphalt road surface flatness detection device.
[0005] To achieve the above object, the utility model adopts the following technical scheme: An asphalt pavement flatness detection device, including a vehicle body, an installation frame is fixedly connected to the upper end of the vehicle body, a sensor is installed on the upper end of the installation frame, a sliding rod is slidably inserted into the lower end of the vehicle body, a measuring wheel is fixedly connected to the lower end of the sliding rod, a first spring is fixedly connected between the installation frame and the measuring wheel, a connecting rod is rotatably connected to the left end of the vehicle body, a cleaning component is arranged at the lower end of the vehicle body, and a fixing component is arranged at the other end of the connecting rod. The cleaning component includes a chute opened at the lower end of the vehicle body, a moving rod is slidably connected to the inner wall of the chute, a grooved mounting block is fixedly connected to the lower end of the moving rod, a rectangular block is slidably connected to the inner wall of the grooved mounting block, and a plurality of uniformly distributed bristles are fixedly connected to the lower end of the rectangular block.
[0006] The effect achieved by the above components is: By setting the cleaning component, when the measuring wheel is detecting, through the driving mechanism, the moving rod moves back and forth in the chute, so that the bristles on the rectangular block in the grooved mounting block contact the road surface inside and perform cleaning. After the bristles complete cleaning on one side, the measuring wheel moves forward, thus sweeping the fine asphalt particles on the asphalt pavement to one side, and further achieving the effect of avoiding affecting the detection result of the measuring wheel as much as possible.
[0007] Preferably, a screw rod is arranged on the inner wall of the chute, the screw rod is threadedly connected to the moving rod, and a motor is installed on the back of the vehicle body, and the output end of the motor is fixed to the screw rod.
[0008] The effect achieved by the above components is: Start the motor, let the motor rotate forward and backward continuously, so that the screw rod rotates, and the moving rod moves back and forth in the chute.
[0009] Preferably, a second spring is fixedly connected to the top of the inner wall of the grooved mounting block, and the other end of the second spring is fixed to the rectangular block.
[0010] The effect achieved by the above components is: By setting the second spring, the rectangular block is extruded, so that the bristles are in full contact with the road surface.
[0011] Preferably, an air inlet groove is opened in the bristle, and air outlet holes are opened on the inner wall of the air inlet groove.
[0012] The effect achieved by the above components is: Gas enters the air inlet groove and finally exits through the air outlet holes on the bristles, so that the bristles blow air when cleaning, assisting the bristles to clean the road surface.
[0013] Preferably, the air inlet groove penetrates through the rectangular block, and an air pump is installed at the upper end of the grooved mounting block.
[0014] The effect achieved by the above components is: Start the air pump, so that gas enters the grooved mounting block and then enters the air inlet groove.
[0015] Preferably, the fixing component includes a U-shaped block fixedly connected to the other end of the connecting rod, and a lead screw is threadedly inserted into the upper end of the U-shaped block.
[0016] The effect achieved by the above components is that when it is necessary to fix the connecting rod and the pickup truck, the U-shaped block is clamped into the pickup truck compartment, and the lead screw is rotated to press against the pickup truck, thereby fixing it.
[0017] Preferably, a pressing plate is arranged on the inner wall of the U-shaped block, a rubber pad is fixedly connected to the lower end of the U-shaped block, and the lead screw is rotatably connected to the pressing plate.
[0018] The effect achieved by the above components is that by arranging the pressing plate, it is avoided that the lead screw directly contacts the pickup truck rigidly, and at the same time, the contact area with the pickup truck is increased.
[0019] Preferably, a circular rod is slidably inserted into the upper end of the U-shaped block, and the circular rod is fixed to the pressing plate.
[0020] The effect achieved by the above components is that by arranging the circular rod, when the lead screw is rotated, under the limitation of the circular rod, the pressing plate is extruded.
[0021] In summary, the beneficial effects of the present utility model are as follows:
[0022] In the present utility model, by arranging the cleaning component, when the measuring wheel detects, through the driving mechanism, the moving rod moves back and forth in the sliding groove, so that the bristles on the rectangular block in the grooved mounting block contact the inside road surface and perform cleaning. After the bristles complete cleaning on one side, the measuring wheel moves forward, thereby sweeping the fine asphalt particles on the asphalt road surface to one side, and further achieving the effect of avoiding affecting the detection result of the measuring wheel as much as possible. It solves the problem that due to the possible existence of some fine asphalt particles and other sundries on the asphalt road surface, when the vehicle body moves on the asphalt road surface, the measuring wheel drives over the asphalt particles, thereby affecting the data measured by the measuring wheel, and further possibly affecting the accuracy of the flatness detection of the asphalt road surface. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 is a three-dimensional structure diagram of the present utility model;
[0024] Figure 2 is a three-dimensional structure diagram of the bottom part of the present utility model;
[0025] Figure 3 is a three-dimensional structure diagram of the section of the present utility model;
[0026] Figure 4 is a three-dimensional structure diagram of the fixing component of the present utility model;
[0027] Figure 5This is a schematic flow chart for the detection of the evenness of asphalt pavement by the present utility model.
[0028] Legend: 1. Vehicle body; 2. Cleaning component; 3. Fixing component; 4. Mounting frame; 5. Connecting rod; 6. Sensor; 7. Slide bar; 8. Measuring wheel; 9. First spring; 21. Chute; 22. Moving rod; 23. Grooved mounting block; 24. Rectangular block; 25. Brush; 26. Motor; 27. Screw rod; 28. Air inlet groove; 29. Air outlet hole; 210. Second spring; 211. Air pump; 31. U-shaped block; 32. Pressing plate; 33. Circular rod; 34. Lead screw. Specific implementation mode
[0029] Refer to Figure 1 As shown, the present utility model provides a technical solution: An asphalt pavement evenness detection device includes a vehicle body 1. An upper end of the vehicle body 1 is fixedly connected with a mounting frame 4. A sensor 6 is installed at an upper end of the mounting frame 4. A slide bar 7 is slidably inserted into a lower end of the vehicle body 1. A lower end of the slide bar 7 is fixedly connected with a measuring wheel 8. A first spring 9 is fixedly connected between the mounting frame 4 and the measuring wheel 8. A connecting rod 5 is rotatably connected to a left end of the vehicle body 1. A cleaning component 2 is arranged at a lower end of the vehicle body 1. The other end of the connecting rod 5 is provided with a fixing component 3.
[0030] Next, the specific settings and functions of the cleaning component 2 and the fixing component 3 will be specifically described.
[0031] Refer to Figure 2 and Figure 3As shown in the figure, in this embodiment: The cleaning component 2 includes a chute 21 opened at the lower end of the vehicle body 1. A moving rod 22 is slidably connected to the inner wall of the chute 21. The lower end of the moving rod 22 is fixedly connected with a grooved mounting block 23. A rectangular block 24 is slidably connected to the inner wall of the grooved mounting block 23. The lower end of the rectangular block 24 is fixedly connected with a plurality of uniformly distributed bristles 25. By setting the cleaning component 2, when the measuring wheel 8 detects, through the driving mechanism, the moving rod 22 moves back and forth in the chute 21, so that the bristles 25 on the rectangular block 24 in the grooved mounting block 23 contact the inner road surface and perform cleaning. After the bristles 25 complete cleaning on one side, the measuring wheel 8 moves forward, thus sweeping the fine asphalt particles on the asphalt road surface to one side, and further achieving the effect of avoiding affecting the detection result of the measuring wheel 8 as much as possible. A screw rod 27 is arranged on the inner wall of the chute 21. The screw rod 27 is threadedly connected with the moving rod 22. A motor 26 is installed on the back of the vehicle body 1. The output end of the motor 26 is fixed to the screw rod 27. Start the motor 26 and let the motor 26 rotate forward and backward continuously, so that the screw rod 27 rotates, and the moving rod 22 moves back and forth in the chute 21. A second spring 210 is fixedly connected to the top of the inner wall of the grooved mounting block 23. The other end of the second spring 210 is fixed to the rectangular block 24. By setting the second spring 210, the rectangular block 24 is squeezed, so that the bristles 25 are in full contact with the road surface. An air inlet groove 28 is opened inside the bristles 25. Air outlet holes 29 are opened on the inner wall of the air inlet groove 28. Gas enters the air inlet groove 28 and finally exits through the air outlet holes 29 on the bristles 25, so that the bristles 25 blow air during cleaning to assist the bristles 25 in cleaning the road surface. The air inlet groove 28 penetrates through the rectangular block 24. An air pump 211 is installed at the upper end of the grooved mounting block 23. Start the air pump 211, so that gas enters the grooved mounting block 23 and enters the air inlet groove 28.
[0032] Referring to Figure 4 As shown in the figure, in this embodiment: The fixing component 3 includes a U-shaped block 31 fixedly connected to the other end of the connecting rod 5. A lead screw 34 is threadedly inserted into the upper end of the U-shaped block 31. When it is necessary to fix the connecting rod 5 and the pickup truck, the U-shaped block 31 is clamped into the pickup truck compartment, and the lead screw 34 is rotated, so that it is squeezed against the pickup truck, thereby fixing it. A pressing plate 32 is arranged on the inner wall of the U-shaped block 31. A rubber pad is fixedly connected to the lower end of the U-shaped block 31. The lead screw 34 is rotatably connected to the pressing plate 32. By setting the pressing plate 32, it is avoided that the lead screw 34 directly contacts the pickup truck rigidly, and at the same time, the contact area with the pickup truck is increased. A circular rod 33 is slidably inserted into the upper end of the U-shaped block 31. The circular rod 33 is fixed to the pressing plate 32. By setting the circular rod 33, when the lead screw 34 is rotated, under the limitation of the circular rod 33, the pressing plate 32 is squeezed.
[0033] Working principle:
[0034] When detecting the evenness of an asphalt pavement, the vehicle body 1 is connected to a pickup truck through a connecting rod 5 and travels on the road section to be measured at a certain speed (such as 5 km / h, but not exceeding 12 km / h). The displacement sensor 6 and the Hall sensor 6 continuously collect data. The displacement sensor 6 mainly collects the relative displacement data between the road surface and the measuring wheel 8, while the Hall sensor 6 is responsible for collecting the driving speed and mileage data of the vehicle. These data are transmitted to the control system in real time for processing. After the control system receives the data collected by the sensor 6, it converts the displacement data collected by the displacement sensor 6 into the unevenness deviation value of the road surface; then, it automatically records these deviation values at a predetermined sampling interval (such as every 10 cm); finally, it processes the collected data using statistical methods (such as calculating the standard deviation) to obtain an index reflecting the evenness of the road surface. The sliding rod 7 on the mounting bracket 4 is squeezed by the first spring 9, so that the measuring wheel 8 is in full contact with the ground. When the measuring wheel 8 is detecting, the motor 26 is started to make the motor 26 rotate forward and backward continuously, so that the screw 27 rotates, and the moving rod 22 moves back and forth in the chute 21, so that the brush 25 on the rectangular block 24 in the grooved mounting block 23 contacts the inside road surface and conducts cleaning. After the brush 25 completes the cleaning on one side, the measuring wheel 8 moves forward, so as to sweep the small asphalt particles on the asphalt pavement to one side, and thus to avoid affecting the detection result of the measuring wheel 8 as much as possible. By setting the second spring 210 to squeeze the rectangular block 24, the brush 25 is in full contact with the road surface. The air pump 211 is started to make the gas enter the grooved mounting block 23 and enter the air intake groove 28. The gas enters the air intake groove 28 and finally exits through the air outlet holes 29 on the brush 25, so that the brush 25 blows air when cleaning, assisting the brush 25 to clean the road surface. When the connecting rod 5 and the pickup truck need to be fixed, the U-shaped block 31 is clamped into the pickup truck compartment, and the screw rod 34 is rotated to squeeze the pickup truck, so as to fix it. By setting the pressing plate 32, it is avoided that the screw rod 34 directly contacts the pickup truck rigidly, and at the same time, the contact area with the pickup truck is increased. By setting the circular rod 33 and rotating the screw rod 34, under the limit of the circular rod 33, the pressing plate 32 is squeezed.
[0035] As described above, it is only the preferred embodiment of the present utility model, and it is not a limitation to the present utility model in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present utility model, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still belong to the protection scope of the technical solution of the present utility model. In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.
Claims
1. An asphalt pavement flatness detection device, comprising a vehicle body (1), characterized in that: The upper end of the vehicle body (1) is fixedly connected to a mounting frame (4), the upper end of the mounting frame (4) is installed with a sensor (6), the lower end of the vehicle body (1) is slidably inserted with a slide bar (7), the lower end of the slide bar (7) is fixedly connected to a measuring wheel (8), a spring (9) is fixedly connected between the mounting frame (4) and the measuring wheel (8), the left end of the vehicle body (1) is rotatably connected to a connecting rod (5), and the lower end of the vehicle body (1) is provided with a cleaning assembly (2). The other end of the connecting rod (5) is provided with a fixing component (3), and the cleaning component (2) comprises a slide groove (21) opened at the lower end of the vehicle body (1), the inner wall of the slide groove (21) is slidably connected to a moving rod (22), the lower end of the moving rod (22) is fixedly connected to a grooved mounting block (23), the inner wall of the grooved mounting block (23) is slidably connected to a rectangular block (24), and the lower end of the rectangular block (24) is fixedly connected to a plurality of evenly distributed bristles (25).
2. The asphalt pavement flatness detection device according to claim 1, characterized in that: The inner wall of the slide groove (21) is provided with a screw rod (27), and the screw rod (27) is threadedly connected to the moving rod (22). A motor (26) is installed on the back of the vehicle body (1), and the output end of the motor (26) is fixed to the screw rod (27).
3. The asphalt pavement flatness detection device according to claim 2, characterized in that: A second spring (210) is fixedly connected to the top of the inner wall of the grooved mounting block (23), and the other end of the second spring (210) is fixed to the rectangular block (24).
4. The asphalt pavement flatness detection device according to claim 3, characterized in that: An air inlet groove (28) is provided inside the bristles (25), and an air outlet hole (29) is provided on the inner wall of the air inlet groove (28).
5. The asphalt pavement flatness detection device according to claim 4, characterized in that: The air inlet groove (28) passes through the rectangular block (24), and an air pump (211) is installed on the upper end of the grooved mounting block (23).
6. The asphalt pavement flatness detection device according to claim 5, characterized in that: The fixing assembly (3) comprises a U-shaped block (31) fixedly connected to the other end of the connecting rod (5), and a screw rod (34) is threadedly inserted into the upper end of the U-shaped block (31).
7. The asphalt pavement flatness detection device according to claim 6, characterized in that: The inner wall of the U-shaped block (31) is provided with a pressing plate (32), the lower end of the U-shaped block (31) is fixedly connected with a rubber pad, and the screw rod (34) is rotatably connected to the pressing plate (32).
8. The asphalt pavement flatness detection device according to claim 7, characterized in that: A round rod (33) is slidably inserted into the upper end of the U-shaped block (31), and the round rod (33) is fixed to the pressing plate (32).