Asphalt surface skid resistance detection device

Abstract

The utility model discloses an asphalt surface skid resistance detection device, which relates to the technical field of asphalt pavement detection, and comprises a support frame and a storage tank, the bottom end of the support frame is provided with an adjustable positioning assembly, the positioning assembly comprises a pavement detection frame, a sealing rubber strip and a control box, the sealing rubber strip is made of a rubber material, and the control box is connected with the storage tank. The sealing rubber strip is of a multi-section type design, the hydraulic rod is driven, the hydraulic rod pushes the pavement detection frame to move downwards, the sealing rubber strip is installed at the tail end of the pavement detection frame, the tail end of the sealing rubber strip extrudes the asphalt surface, the sealing rubber strip is continuously compressed, diffusion of hot air is reduced, and through the pavement detection frame, the pavement detection can be performed in different areas and road sections. The skid resistance of the asphalt pavement under different weathers is tested by adopting a high temperature or rainfall simulation mode, the interference of external factors on equipment can be effectively reduced by adopting a wrapping design, and the stability and the precision of a measurement result are improved.

Description

Technical Field

[0001] This utility model relates to the field of asphalt pavement testing technology, and in particular to an asphalt surface skid resistance testing device. Background Technology

[0002] With social development, the issue of anti-skid properties on urban roads, sports fields, and asphalt pavements has attracted widespread attention. Anti-skid testing devices are needed for testing the anti-skid properties of asphalt pavements. In practical applications, anti-skid testing devices typically require the following technologies:

[0003] 1. The base mechanism provides stable support for the entire device;

[0004] 2. The slider mechanism directly contacts the road surface through movement;

[0005] 3. The pointer and dial mechanism indicates the corresponding angle value on the dial;

[0006] Currently, existing asphalt pavement skid resistance testing devices (such as patent publication number: CN211292527U) disclose an asphalt pavement skid resistance testing device. By setting a ratchet backstop at the end of the pointer, it avoids the pointer from reversing due to the reversal of the pendulum during the test, thus ensuring the accuracy of the test structure and improving the efficiency of the test.

[0007] The pendulum device is directly exposed and is easily affected by external vibrations, airflow and other factors, which leads to a decrease in the stability of the equipment measurement results. During operation, the pendulum needs to be released and the angle read manually, which will result in different release forces for each swing, which can easily lead to large human errors. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides an asphalt surface skid resistance testing device. It solves the technical problems of the pendulum device being directly exposed, which is easily affected by external vibrations, airflow and other factors, leading to a decrease in the stability of the equipment measurement results. In addition, the operation requires manual release of the pendulum and angle reading, which can result in different release forces for each swing, easily leading to large human errors.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] An asphalt surface skid resistance testing device includes a support frame and a storage tank. The bottom end of the support frame is provided with an adjustable positioning component. The positioning component includes a road surface testing frame, a sealing strip, and a control box. The sealing strip is made of rubber and has a multi-segment design. Two control boxes for controlling the extension and retraction of hydraulic rods are fixedly installed at the top of the road surface testing frame. Each control box has a multi-segment telescopic rod with multiple extension and retraction sections fixedly installed on its side end.

[0011] Preferably, the top ends of the two telescopic multi-section rods are fixedly installed with the same sliding bracket for horizontal sliding, and the bottom end of the sliding bracket is fixedly installed with a road surface friction plate for rubbing asphalt.

[0012] At least two multi-segment hollow tubes for transmitting water vapor are fixedly installed at the top of the road surface detection frame. A disc-shaped mist nozzle is fixedly installed at the bottom of each multi-segment hollow tube. The top of each multi-segment hollow tube is segmented and hollow inside.

[0013] The bottom of the road friction plate has a continuous raised design, and the entire road friction plate is made of rubber.

[0014] The sliding bracket has two protrusions on its side end that mate with the inner side of the road surface detection frame. The sliding bracket is made entirely of metal.

[0015] Preferably, each of the two inner walls of the road surface detection frame is fixedly equipped with a long strip-shaped heating rod, and the interior of each heating rod is connected to the control box via a wiring harness;

[0016] The storage tank has interfaces fixedly installed on both sides. The storage tank is connected to multiple hollow pipes through valves. Each control box is equipped with a pressure sensor.

[0017] Compared with the prior art, the present invention has the following beneficial effects;

[0018] In this invention, the road surface detection frame moves downward, and the end of the detection frame causes the sealing strip to press against the surface of the asphalt pavement. The control box drives a telescopic multi-section rod on one side, which in turn drives a sliding bracket to slide inside the road surface detection frame. The sliding bracket has raised designs on both sides, which causes the road surface friction plate to slide horizontally. The end of the road surface friction plate has multiple raised sections. The road surface friction plate rubs against the asphalt pavement, and the frictional resistance is measured by a piezoelectric force sensor to detect the anti-skid properties of the asphalt pavement, thus improving the accuracy of the detection.

[0019] In this invention, a hydraulic rod is driven to push the road surface testing frame downwards. A sealing strip is installed at the end of the road surface testing frame. The end of the sealing strip is pressed against the asphalt surface, and the sealing strip is continuously compressed to reduce the diffusion of heat. Through the road surface testing frame, the anti-skid properties of asphalt pavement under different weather conditions can be tested in different areas and road sections using high temperature or simulated precipitation. The enclosed design can effectively reduce the interference of external factors on the equipment and improve the stability and accuracy of the measurement results. Attached Figure Description

[0020] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0021] Figure 1 This is a structural diagram of the support frame of this utility model;

[0022] Figure 2 This is a structural diagram of the road surface detection frame of this utility model;

[0023] Figure 3 This is a structural diagram of the telescopic multi-section rod of this utility model;

[0024] Figure 4 This is a structural diagram of the road friction plate of this utility model.

[0025] Legend: 11. Support frame; 12. Road surface detection frame; 13. Sealing strip; 14. Hydraulic rod; 15. Control box; 16. Telescopic multi-section rod; 17. Storage tank; 18. Sliding seat; 19. Road surface friction plate; 21. Multi-section hollow tube; 22. Mist nozzle; 23. Heating rod. Detailed Implementation

[0026] This application provides an asphalt surface skid resistance testing device, effectively solving the problem that the pendulum device is directly exposed and easily affected by external vibrations, airflow, and other factors, leading to decreased stability of the equipment measurement results. Furthermore, the manual release and angle reading of the pendulum during operation can result in inconsistent release forces each time, easily causing significant human error. By moving the road surface detection frame downwards, the end of the frame drives the sealing strip to press against the asphalt pavement surface. A telescopic multi-section rod on one side is driven by the control box, which in turn drives a sliding seat to slide inside the road surface detection frame. The sliding seat has raised designs on both sides, causing the road friction plate to slide horizontally. The end of the road friction plate has multiple protrusions, and the friction between the plate and the asphalt pavement is measured by a piezoelectric force sensor based on the frictional resistance, thus improving the accuracy of the test.

[0027] Example

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application embodiment effectively solves the technical problems that the pendulum device is directly exposed and easily affected by external vibrations, airflow and other factors, which leads to a decrease in the stability of the device measurement results. Furthermore, the operation requires manual release of the pendulum and angle reading, which can result in different release forces for each swing, easily leading to significant human error. The overall approach is as follows:

[0029] To address the problems existing in the prior art, this utility model provides an asphalt surface skid resistance testing device, including a support frame 11 and a storage tank 17. The bottom end of the support frame 11 is provided with an adjustable positioning component, which includes a road surface detection frame 12, a sealing strip 13, and a control box 15. The sealing strip 13 is made of rubber and has a multi-segment design. Two control boxes 15 for controlling the extension and retraction of hydraulic rods 14 are fixedly installed at the top of the road surface detection frame 12. Each control box 15 is equipped with a pressure sensor. Each control box 15 is fixedly installed with a multi-segment telescopic rod 16. By moving the road surface detection frame 12 downward, the end of the road surface detection frame 12 drives the sealing strip 13 to squeeze the surface of the asphalt road surface. The control box 15 drives the telescopic rod 16 on one side. The control boxes 15 are symmetrically installed. The control box 15 is equipped with a motor and a piezoelectric force sensor.

[0030] The top ends of the two telescopic multi-section rods 16 are fixedly installed with the same sliding bracket 18 for horizontal sliding. The bottom end of the sliding bracket 18 is fixedly installed with a road surface friction plate 19 for rubbing against asphalt. The telescopic multi-section rods 16 drive the sliding bracket 18 to slide inside the road surface detection frame 12. The sides of the sliding bracket 18 are designed with protrusions. The sliding bracket 18 drives the road surface friction plate 19 to slide horizontally. The end of the road surface friction plate 19 has multiple protrusions. The road surface friction plate 19 rubs against the asphalt road surface.

[0031] At least two multi-segment hollow tubes 21 for transmitting water vapor are fixedly installed at the top of the road surface detection frame 12. A disc-shaped mist nozzle 22 is fixedly installed at the bottom of each multi-segment hollow tube 21. The top of each multi-segment hollow tube 21 is segmented and hollow inside. The multi-segment hollow tube 21 guides the water source into the interior of the mist nozzle 22. Multiple small nozzles are installed at the bottom of the mist nozzle 22. Clean water passes through the mist nozzle 22 and can spray a mist of water to simulate a rainy day environment.

[0032] Long heating rods 23 are fixedly installed on both inner walls of the road surface detection frame 12. The interior of each heating rod 23 is connected to the control box 15 through a wire harness. Interfaces are fixedly installed on both sides of the storage tank 17. The storage tank 17 is connected to multiple hollow pipes 21 through valves. The storage tank 17 stores clean water. Interfaces are installed at both ends of the storage tank 17. The storage tank 17 and the multiple hollow pipes 21 are interconnected, and the clean water inside the storage tank 17 is sprayed downwards into the interior of the road surface detection frame 12.

[0033] The bottom of the road friction plate 19 has a continuous raised design. The entire road friction plate 19 is also made of rubber. The side end of the sliding bracket 18 is provided with two protrusions that connect with the inner side of the road detection frame 12. The sliding bracket 18 is made of metal to increase its strength. The sliding bracket 18 drives the road friction plate 19 to slide horizontally. The end of the road friction plate 19 has multiple protrusions. The road friction plate 19 rubs against the asphalt road surface to ensure the stability of the road friction plate 19.

[0034] Working principle:

[0035] The first step involves fixing the testing equipment to the mobile frame using the support frame 11. This allows the road surface testing frame 12 to be moved across the asphalt road surface. Clean water is stored inside the storage tank 17, which has interfaces at both ends. The storage tank 17 is interconnected with multiple hollow pipes 21, each with an interface at its top and a hollow interior. The hollow pipes 21 guide the water source into the mist nozzle 22. Multiple small nozzles are installed at the bottom of the mist nozzle 22. The clean water passes through the mist nozzle 22, creating a spray of mist-like water to simulate a rainy environment. Two heating rods 23 are installed on the inner side of the road surface testing frame 12. The heating rods 23 are connected to the control box 15 through a wiring harness. The control box 15 turns on the power inside the heating rods 23, and the heating rods 23 heat up. This heats up the hydraulic rods 14, which in turn push the road surface testing frame 12 downward. A sealing strip 13 is installed at the end of the road surface testing frame 12. The end of the sealing strip 13 is pressed against the asphalt surface. The sealing strip 13 is continuously compressed to reduce the diffusion of heat. Through the road surface testing frame 12, the skid resistance of asphalt pavement under different weather conditions can be tested in different areas and road sections using high temperature or simulated precipitation.

[0036] The second step involves moving the road surface detection frame 12 downwards. The end of the frame 12 causes the sealing strip 13 to press against the asphalt pavement surface, increasing the tightness between the frame 12 and the pavement. A mist nozzle 22 sprays water into the support frame 11, simulating road flooding. The control box 15 drives the telescopic multi-section rod 16 on one side. The control box 15 is symmetrically installed and contains a motor and a piezoelectric force sensor. Based on the piezoelectric effect of the material, when subjected to external force, the piezoelectric material will… It generates an electric charge, the magnitude of which is proportional to the force applied. By measuring the change in charge, the magnitude of the external force can be determined. It has a fast response speed and good dynamic performance. The sliding bracket 18 is driven to slide inside the road surface detection frame 12 by the telescopic multi-section rod 16. The sliding bracket 18 has a raised design on both sides. The sliding bracket 18 drives the road surface friction plate 19 to slide horizontally. The end of the road surface friction plate 19 has multiple protrusions. The road surface friction plate 19 rubs against the asphalt road surface. The friction resistance is measured by a piezoelectric force sensor to detect the anti-skid property of the asphalt road surface.

[0037] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A device for testing the skid resistance of asphalt surfaces, comprising a support frame (11) and a storage tank (17), characterized in that, The bottom end of the support frame (11) is provided with an adjustable positioning component, which includes a road surface detection frame (12), a sealing strip (13), and a control box (15). The sealing strip (13) is made of rubber and has a multi-segment design. Two control boxes (15) for controlling the extension and retraction of the hydraulic rod (14) are fixedly installed at the top of the road surface detection frame (12). Each control box (15) has a multi-segment telescopic rod (16) with multiple extension and retraction sections fixedly installed on its side end.

2. The asphalt surface skid resistance testing device as described in claim 1, characterized in that, The top ends of the two telescopic multi-section rods (16) are fixedly installed with the same sliding bracket (18) for horizontal sliding, and the bottom end of the sliding bracket (18) is fixedly installed with a road friction plate (19) for rubbing asphalt.

3. The asphalt surface skid resistance testing device as described in claim 1, characterized in that, At least two multi-segment hollow tubes (21) for transmitting water vapor are fixedly installed at the top of the road surface detection frame (12). A disc-shaped mist nozzle (22) is fixedly installed at the bottom of each multi-segment hollow tube (21). The top of each multi-segment hollow tube (21) is segmented and hollow inside.

4. The asphalt surface skid resistance testing device as described in claim 2, characterized in that, The bottom of the road friction plate (19) has a continuous raised design, and the entire road friction plate (19) is made of rubber.

5. The asphalt surface skid resistance testing device as described in claim 2, characterized in that, The sliding bracket (18) has two protrusions at its side end that mate with the inner side of the road surface detection frame (12). The sliding bracket (18) is made entirely of metal.

6. The asphalt surface skid resistance testing device as described in claim 1, characterized in that, The two inner walls of the road surface detection frame (12) are fixedly equipped with long strip-shaped heating rods (23), and the interior of each heating rod (23) is connected to the control box (15) through a wire harness.

7. The asphalt surface skid resistance testing device as described in claim 1, characterized in that, The storage tank (17) has interfaces fixedly installed on both sides, and the storage tank (17) is connected to a multi-section hollow pipe (21) through valves.

8. The asphalt surface skid resistance testing device as described in claim 1, characterized in that, Each of the control boxes (15) is equipped with a pressure sensor.

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