Asphalt pavement skid resistance detection device

Abstract

The utility model relates to the technical field of antiskid performance detection, in particular to an asphalt pavement antiskid performance detection device which comprises a traction detection vehicle, the right side of the traction detection vehicle is fixedly connected with a first motor, and an output shaft of the first motor extends into an inner cavity of the traction detection vehicle and is fixedly connected with a threaded rod. According to the scheme, after the road friction coefficient test vehicle detects the anti-skid performance of a one-way road section, a worker starts a lifting structure through a controller to lift a fixed shell, the bottom of a detection wheel is indirectly separated from the ground, then a second motor is started, an output shaft of the second motor drives the detection wheel to rotate through a rotating structure, and the detection wheel rotates; the detection wheel gradually rotates from the transverse direction to the longitudinal direction in the rotating process, then the lifting structure is started to lower the fixing shell so that the detection wheel can make contact with the ground, the detection wheel is moved back and forth through the first motor, then the longitudinal direction of the road section is detected, and therefore the anti-skid performance of the two-way road section is detected.

Description

Technical Field

[0001] This utility model relates to the field of anti-skid performance testing technology, specifically to an asphalt pavement anti-skid performance testing device. Background Technology

[0002] The skid resistance of asphalt pavement is an important indicator for evaluating the quality of newly constructed highway projects. During operation, the skid resistance of highway pavement is an important guarantee for driving safety, especially in rainy and snowy weather. Currently, the testing devices used to test pavement skid resistance usually involve using a road tractor to pull a road friction coefficient test vehicle to test friction force, thereby detecting the pavement's skid resistance.

[0003] When using a road friction coefficient testing vehicle, it can only move in one direction on the road surface, such as the transverse and longitudinal road surfaces. After the anti-skid performance test of a one-way road section is completed, the test vehicle needs to be adjusted by manually turning the vehicle around and replanning the route. This not only consumes a lot of time, but may also cause additional wear and tear on mechanical parts due to frequent adjustments, increasing equipment maintenance costs. Utility Model Content

[0004] The purpose of this invention is to provide an asphalt pavement skid resistance testing device to solve the problem mentioned in the background art that the skid resistance can only be tested on one-way road sections.

[0005] To achieve the above objectives, this utility model provides the following technical solution, comprising: a traction inspection vehicle, wherein a fixed shell is movably connected to the top of the traction inspection vehicle via a lifting structure, a first motor is fixedly connected to the right side of the fixed shell, the output shaft of the first motor extends into the inner cavity of the fixed shell and is fixedly connected to a threaded rod, the left side of the threaded rod is movably connected to the inner wall of the fixed shell, a movable block is threadedly connected to the surface of the threaded rod, the surface of the movable block is slidably connected to the inner wall of the fixed shell, and an inspection wheel is mounted on the bottom of the movable block via a rotating structure.

[0006] Preferably, the rotating structure includes a fixed block, a second motor is fixedly connected to the inner cavity of the fixed block, the top of the fixed block and the second motor are fixedly connected to a movable block, a rotating disk is fixedly connected to the output shaft of the second motor, a positioning frame is movably connected around the surface of the rotating disk, the top of the positioning frame is fixedly connected to a fixed shell, and the bottom of the rotating disk is rotatably connected to a detection wheel via a rotating shaft.

[0007] According to the asphalt pavement skid resistance testing device as claimed in the claim, the device is characterized in that: a limiting ring is fixedly connected around the surface of the rotating disk, a limiting groove matching the limiting ring is provided on the surface of the positioning frame, and the front and rear sides of the positioning frame are movably connected to the limiting groove.

[0008] Preferably, a limiting ring is fixedly connected around the surface of the rotating disk, and a limiting groove matching the limiting ring is opened on the surface of the positioning frame. The front and rear sides of the positioning frame are movably connected to the limiting groove.

[0009] Preferably, a fixing ring is fixedly connected to the surface of the first motor, and the left side of the fixing ring is fixedly connected to the fixing shell.

[0010] Preferably, limiting strips are fixedly connected to both the front and rear sides of the movable block, and the inner cavity of the fixed shell is provided with a sliding groove that matches the limiting strips, and the surface of the limiting strips is movably connected to the sliding grooves.

[0011] Preferably, the surface of the detection wheel is provided with anti-slip patterns, and the shape of the anti-slip patterns matches the anti-slip patterns of the vehicle tires.

[0012] Preferably, the lifting structure includes a support frame, the bottom of which is fixedly connected to the towing inspection vehicle, and a hydraulic cylinder is fixedly connected to the top of the support frame. The hydraulic rod of the hydraulic cylinder extends to the bottom of the support frame and is fixedly connected to the fixed shell.

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

[0014] This solution allows the road friction coefficient testing vehicle to perform anti-skid performance testing on a one-way road section. After testing, staff can use a controller to activate a lifting mechanism to raise the fixed shell, indirectly separating the bottom of the testing wheel from the ground. Then, the second motor is activated, and its output shaft drives the testing wheel to rotate via a rotating mechanism. As the wheel rotates, it gradually changes from a horizontal to a vertical position. The lifting mechanism is then activated to lower the fixed shell, bringing the testing wheel into contact with the ground. The first motor then moves the testing wheel back and forth to test the longitudinal direction of the road section, thus completing the anti-skid performance testing for a two-way road section. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0017] Figure 3 This is a partial schematic diagram of the structure of this utility model.

[0018] In the diagram: 1. Traction testing vehicle; 2. First motor; 3. Threaded rod; 4. Movable block; 5. Testing wheel; 6. Fixed block; 7. Second motor; 8. Rotary disk; 9. Positioning frame; 10. Limiting ring; 11. Limiting groove; 12. Fixed ring; 13. Limiting strip; 14. Anti-slip texture; 15. Support frame; 16. Hydraulic cylinder; 17. Fixed shell. Detailed Implementation

[0019] 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.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Example 1:

[0022] Please see Figure 1-3 This utility model provides a technical solution: an asphalt pavement skid resistance testing device, comprising: a traction testing vehicle 1, the top of the traction testing vehicle 1 being movably connected to a fixed shell 17 via a lifting structure, a first motor 2 being fixedly connected to the right side of the fixed shell 17, the output shaft of the first motor 2 extending into the inner cavity of the fixed shell 17 and being fixedly connected to a threaded rod 3, the left side of the threaded rod 3 being movably connected to the inner wall of the fixed shell 17, a movable block 4 being threadedly connected to the surface of the threaded rod 3, the surface of the movable block 4 being slidably connected to the inner wall of the fixed shell 17, and a testing wheel 5 being mounted on the bottom of the movable block 4 via a rotating structure.

[0023] Analysis of the above: After the road friction coefficient testing vehicle completes the anti-skid performance test on a one-way road section, the staff activates the lifting structure via the controller to raise the fixed shell 17, separating the bottom of the testing wheel 5 from the ground. Then, the second motor 7 is activated, and its output shaft drives the testing wheel 5 to rotate via the rotating structure. During rotation, the testing wheel 5 gradually changes from a horizontal to a vertical position. The staff then activates the lifting structure again via the controller to lower the fixed shell 17, bringing the testing wheel 5 into contact with the ground. The staff then activates the first motor 2, whose output shaft drives the threaded rod 3 to rotate. Simultaneously, the threaded rod 3 moves the movable block 4, which in turn moves the rotating structure and the testing wheel 5. When the wheel reaches the corresponding position, the output shaft of the first motor 2 simply needs to rotate in the opposite direction to move the testing wheel 5 in the opposite direction. By moving the testing wheel 5 back and forth through these operations, the longitudinal direction of the road section can be tested, thus completing the anti-skid performance test for a two-way road section. (Note: Friction coefficient testing vehicles typically detect friction through a detection wheel 5 at the bottom. The detection wheel 5 generally has a special design and construction, and it is in direct contact with the road surface. When the test vehicle is towed on the road, the detection wheel 5 is subjected to road friction. Sensors are installed on the detection wheel 5, which can measure the forces acting on the detection wheel 5, including tangential friction and vertical pressure. By measuring and analyzing these forces, combined with information such as the trailer's speed and the rotation of the detection wheel 5, the friction coefficient of the road surface can be calculated. The detection wheel 5 is existing technology.)

[0024] Example 2:

[0025] Please see Figure 1-3 This utility model provides a technical solution based on Embodiment 1: the rotating structure includes a fixed block 6, a second motor 7 is fixedly connected to the inner cavity of the fixed block 6, the top of the fixed block 6 and the second motor 7 is fixedly connected to the movable block 4, the output shaft of the second motor 7 is fixedly connected to a rotating disk 8, a positioning frame 9 is movably connected around the surface of the rotating disk 8, the top of the positioning frame 9 is fixedly connected to the fixed shell 17, and the bottom of the rotating disk 8 is rotatably connected to the detection wheel 5 through a rotating shaft.

[0026] Analysis of the above content: When in use, the staff starts the second motor 7, and the output shaft of the second motor 7 drives the rotating disk 8 to rotate. When the rotating disk 8 rotates, it drives the detection wheel 5 to rotate. When it rotates to a suitable angle, the detection wheel 5 can change from horizontal to vertical.

[0027] Example 3:

[0028] Please see Figure 1-3Based on Embodiment 1, this utility model provides a technical solution: a limiting ring 10 is fixedly connected around the surface of the rotating disk 8, and a limiting groove 11 matching the limiting ring 10 is opened on the surface of the positioning frame 9. The front and rear sides of the positioning frame 9 are movably connected to the limiting groove 11.

[0029] Analysis of the above content: By setting the limit ring 10 and the limit groove 11 in combination, the rotating disk 8 is limited to rotate by the limit ring 10 during the rotation process. At the same time, the limit ring 10 provides limit support for the rotating disk 8, preventing the rotating disk 8 from deviating from its original position during long-term use.

[0030] Example 4:

[0031] Please see Figure 1-3 Based on Embodiment 1, this utility model provides a technical solution: a fixing ring 12 is fixedly connected to the surface of the first motor 2, and the left side of the fixing ring 12 is fixedly connected to the fixing shell 17.

[0032] Analysis of the above content: At the same time, a fixing ring 12 is set to fix the first motor 2 to prevent the first motor 2 from falling off due to accidental collision.

[0033] Example 5:

[0034] Please see Figure 1-3 Based on Embodiment 1, this utility model provides a technical solution: the front and rear sides of the movable block 4 are fixedly connected to the limiting strip 13, the inner cavity of the fixed shell 17 is provided with a sliding groove that matches the limiting strip 13, and the surface of the limiting strip 13 is movably connected to the sliding groove.

[0035] Analysis of the above content: By setting the limit bar 13 to limit the movement of the active block 4, the active block 4 can only move in the corresponding position when it moves, thus preventing misalignment.

[0036] Example 6:

[0037] Please see Figure 1-3 Based on Embodiment 1, this utility model provides a technical solution: the surface of the detection wheel 5 is provided with anti-slip texture 14, and the shape of the anti-slip texture 14 matches the anti-slip texture 14 of the vehicle tire.

[0038] Analysis of the above content: The surface of the test wheel 5 is set with anti-slip treads that match the actual vehicle tires, which further enhances the simulation effect of the actual vehicle driving state, so as to better simulate the contact between the tire and the road surface when the actual vehicle is driving, making the test results more realistic and reliable.

[0039] Example 7:

[0040] Please see Figure 1-3The present invention provides a technical solution based on Embodiment 1: the lifting structure includes a support frame 15, the bottom of the support frame 15 is fixedly connected to the traction inspection vehicle 1, and a hydraulic cylinder 16 is fixedly connected to the top of the support frame 15. The hydraulic rod of the hydraulic cylinder 16 extends to the bottom of the support frame 15 and is fixedly connected to the fixed shell 17.

[0041] Analysis of the above content: By setting up the support frame 15 and the hydraulic cylinder 16 in cooperation, the support frame 15 supports the hydraulic cylinder 16, and the four support feet of the support frame 15 limit the fixed shell 17 to prevent it from being misaligned when moving. The fixed shell 17 is moved up and down by the hydraulic cylinder 16, so that the detection wheel 5 does not come into contact with the ground when it is not in use.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for detecting skid resistance of asphalt pavement, characterized by, include: A traction inspection vehicle (1) is provided. A fixed shell (17) is movably connected to the top of the traction inspection vehicle (1) via a lifting structure. A first motor (2) is fixedly connected to the right side of the fixed shell (17). The output shaft of the first motor (2) extends into the inner cavity of the fixed shell (17) and is fixedly connected to a threaded rod (3). The left side of the threaded rod (3) is movably connected to the inner wall of the fixed shell (17). A movable block (4) is threadedly connected to the surface of the threaded rod (3). The surface of the movable block (4) is slidably connected to the inner wall of the fixed shell (17). An inspection wheel (5) is installed at the bottom of the movable block (4) via a rotating structure.

2. The anti-skid performance detection device for asphalt pavement according to claim 1, characterized in that: The rotating structure includes a fixed block (6), a second motor (7) is fixedly connected to the inner cavity of the fixed block (6), the top of the fixed block (6) and the second motor (7) is fixedly connected to the movable block (4), the output shaft of the second motor (7) is fixedly connected to a rotating disk (8), a positioning frame (9) is movably connected around the surface of the rotating disk (8), the top of the positioning frame (9) is fixedly connected to the fixed shell (17), and the bottom of the rotating disk (8) is rotatably connected to the detection wheel (5) through a rotating shaft.

3. The anti-skid performance detection device for asphalt pavement according to claim 2, characterized in that: A limiting ring (10) is fixedly connected around the surface of the rotating disk (8), and a limiting groove (11) matching the limiting ring (10) is opened on the surface of the positioning frame (9). The front and rear sides of the positioning frame (9) are movably connected to the limiting groove (11).

4. The anti-skid performance detection device for asphalt pavement according to claim 1, characterized in that: A fixing ring (12) is fixedly connected to the surface of the first motor (2), and the left side of the fixing ring (12) is fixedly connected to the fixing shell (17).

5. The anti-skid performance detection device for asphalt pavement according to claim 1, characterized in that: The front and rear sides of the movable block (4) are fixedly connected to the limiting strip (13), and the inner cavity of the fixed shell (17) is provided with a sliding groove that matches the limiting strip (13). The surface of the limiting strip (13) is movably connected to the sliding groove.

6. The anti-skid performance detection device for asphalt pavement according to claim 1, characterized in that: The surface of the detection wheel (5) is provided with anti-slip patterns (14), the shape of which matches the anti-slip patterns (14) of the vehicle tire.

7. The anti-skid performance detection device for asphalt pavement according to claim 1, characterized in that: The lifting structure includes a support frame (15), the bottom of which is fixedly connected to the traction inspection vehicle (1), and a hydraulic cylinder (16) is fixedly connected to the top of the support frame (15). The hydraulic rod of the hydraulic cylinder (16) extends to the bottom of the support frame (15) and is fixedly connected to the fixed shell (17).

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