Pavement structure friction detection device

Abstract

The utility model relates to a pavement structure friction detection device, and relates to the pavement structure detection field, the pavement structure friction detection device comprises a rack, the rack is provided with a slide rail, the slide rail is provided with a mobile platform, the slide rail is provided with a first driving device used for driving the mobile platform to slide along the slide rail, and the mobile platform is provided with a connecting plate and a second driving device; the second driving device is used for driving the connecting plate to move up and down, the side, close to the rack, of the connecting plate is rotationally connected with a pressing wheel, the rotating direction of the pressing wheel is the same as the length direction of the sliding rail, the rack is provided with a detection platform, the detection platform directly faces the pressing wheel, and the moving platform is provided with a distance sensor used for detecting the position of the connecting plate. The second driving device presses the pressing wheel on the pavement structure at the detection platform, the first driving device drives the moving platform to move along the sliding rail, the pressing wheel repeatedly rolls the pavement structure, and numerical values of the distance sensor before and after friction are compared to obtain the sinking depth of the pavement structure. And the wear resistance of the pavement structure can be effectively measured.

Description

Technical Field

[0001] This application relates to the field of pavement structure detection, and particularly to a pavement structure friction detection device. Background Art

[0002] At present, asphalt pavement is a commonly used material in urban road paving. In order to reduce the workload at the construction site for the convenience of on-site pavement paving, precast asphalt blocks have emerged. The precast asphalt blocks are processed in the factory. After processing, the precast asphalt blocks are transported to the construction site and directly spliced and laid. The processing and laying by directly using the precast asphalt blocks as the pavement structure saves the labor intensity at the construction site.

[0003] Regarding the above related technologies, the wear resistance of the precast asphalt blocks is an important index of the pavement structure. In order to detect whether the precast asphalt blocks leaving the factory are qualified, it is necessary to conduct spot checks on their wear resistance before the precast asphalt blocks leave the factory. Utility Model Content

[0004] In order to facilitate the operator to inspect the wear resistance of the pavement structure, this application provides a pavement structure friction detection device.

[0005] This application provides a pavement structure friction detection device, adopting the following technical solutions:

[0006] A pavement structure friction detection device includes a frame. The frame is provided with a slide rail. The slide rail is provided with a moving platform. The slide rail is provided with a first driving device for driving the moving platform to slide along the slide rail. The moving platform is provided with a connecting plate and a second driving device. The second driving device is used to drive the connecting plate to move up and down. One side of the connecting plate close to the frame is rotatably connected with a pressing wheel. The rotation direction of the pressing wheel is the same as the length direction of the slide rail. The frame is provided with a detection platform. The detection platform is opposite to the pressing wheel. The moving platform is provided with a distance sensor for detecting the position of the connecting plate.

[0007] By adopting the above technical solutions, the second driving device presses the pressing wheel on the pavement structure at the detection platform. The first driving device drives the moving platform to move along the slide rail. The pressing wheel repeatedly rolls over the pavement structure. By comparing the numerical values of the distance sensor before and after friction, the depression depth of the pavement structure is obtained, and the wear resistance of the pavement structure can be effectively measured.

[0008] Optionally, the detection platform is provided with a plurality of limiting blocks. The limiting blocks are provided with sliding grooves. The limiting blocks are connected to the frame by threaded bolts. When the pavement structure is placed on the detection platform, the limiting blocks limit the pavement structure.

[0009] By adopting the above technical solution, after placing the pavement structure on the detection platform, the position of the limiting block is adjusted through the sliding groove until the limiting block abuts against the edge of the pavement structure, and the limiting block is locked to the detection platform using bolts, effectively restricting the position of the pavement structure through the limiting block.

[0010] Optionally, the moving platform is provided with a connecting hole, and a linear bearing is provided on the inner wall of the connecting hole, and the inner wall of the linear bearing is slidably connected to the slide rail.

[0011] By adopting the above technical solution, the sliding connection with the slide rail is achieved by installing a linear bearing on the inner wall of the connecting hole, effectively reducing the wear between the slide rail and the connecting hole, and the connecting hole effectively improves the stability of the moving platform during movement.

[0012] Optionally, the connecting plate is provided with a plurality of guiding columns, and the moving platform is provided with guiding holes corresponding to the guiding columns one by one.

[0013] By adopting the above technical solution, when the first driving device pushes the moving platform to move, the stability of the connecting plate during the movement of the moving platform is effectively improved by the abutment between the guiding column and the inner wall of the guiding hole, thereby improving the accuracy of the distance sensor detection.

[0014] Optionally, the connecting plate includes a quick-release component that facilitates the installation and removal of the pressing wheel.

[0015] By adopting the above technical solution, the operator uses the quick-release component to fix the pressing wheel on the connecting plate, and the quick-release component facilitates the operator to replace the pressing wheel with excessive wear, effectively realizing the quick replacement of the damaged pressing wheel.

[0016] Optionally, the quick-release component includes a lower mounting block and an upper mounting block, the upper mounting block and the lower mounting block are connected by a threaded bolt, and mounting grooves for rotatably connecting with the pressing wheel are provided on the sides of the upper mounting block and the lower mounting block close to each other.

[0017] By adopting the above technical solution, after removing the bolt and taking off the lower mounting block, the pressing wheel is disengaged from the mounting groove, thereby realizing the quick disassembly of the pressing wheel. Placing a new pressing wheel into the mounting groove and connecting the lower mounting block and the upper mounting block with a bolt effectively realizes the quick installation and disassembly of the pressing wheel.

[0018] Optionally, the first driving device is a first cylinder, and the first cylinder is provided with a solenoid valve for controlling the telescopic movement of the first cylinder.

[0019] By adopting the above technical solution, the telescopic movement of the first cylinder drives the moving platform to slide on the slide rail, and the telescopic movement of the first cylinder can be effectively controlled by the solenoid valve to control the number of movements of the moving platform, thereby realizing the control of the reciprocating movement distance of the pressing wheel on the pavement structure.

[0020] Optionally, the second driving device is a second cylinder.

[0021] By adopting the above technical solution, the second cylinder as the second driving device can effectively keep the pressing wheel pressing on the road surface structure with the same pressure, so that the pressure on the road surface structure is the same during the whole detection process, effectively improving the accuracy of the detection process.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The second driving device presses the pressing wheel on the road surface structure at the detection platform, the first driving device drives the moving platform to move along the slide rail, the pressing wheel repeatedly rolls over the road surface structure, and the depth of subsidence of the road surface structure is obtained by comparing the values of the distance sensors before and after friction, effectively measuring the wear resistance of the road surface structure;

[0024] 2. After placing the road surface structure on the detection platform, adjust the position of the limiting block through the chute until the limiting block abuts against the edge of the road surface structure, and use the locking bolt to lock the limiting block on the detection platform, effectively restricting the position of the road surface structure through the limiting block. Description of the Drawings

[0025] Figure 1 is an overall structural schematic diagram of a road surface structure friction detection device.

[0026] Figure 2 is the schematic cross-sectional view of the overall structure.

[0027] Description of the reference numerals: 1, frame; 11, detection platform; 12, slide rail; 13, first cylinder; 14, solenoid valve; 15, limiting block; 2, moving platform; 21, second cylinder; 22, distance sensor; 23, guide post; 24, linear bearing; 3, connecting plate; 31, pressing wheel; 32, quick-release assembly; 321, upper mounting block; 322, lower mounting block. Detailed Description of the Invention

[0028] The following further describes the present application in detail with reference to all the drawings.

[0029] The embodiment of the present application discloses a road surface structure friction detection device.

[0030] Refer to Figure 1, a pavement structure friction detection device, including a frame 1, the frame 1 is provided with a slide rail 12 and a moving platform 2, the slide rail 12 is installed with a first driving device, the first driving device pushes the moving platform 2, the connecting plate 3 and the pressing wheel 31 installed on the moving platform 2 to move reciprocally, and through the reciprocating movement of the pressing wheel 31, the pavement structure placed on the detection platform 11 is repeatedly rubbed. Finally, the wear amount of the pavement structure is obtained by reading the difference between the front and back of the distance sensor 22 installed on the moving platform 2 for detecting the position of the connecting plate 3, realizing the friction detection of the pavement structure.

[0031] Refer to Figure 1 , four limit blocks 15 are installed around the detection platform 11, and chutes are opened on the limit blocks 15. When the pavement structure is placed on the detection platform 11, the position of the limit blocks 15 is adjusted until the limit blocks 15 are in contact with the edge of the pavement structure at the detection platform 11. Then, bolts are used to pass through the chutes and screwed into the threaded holes of the detection platform 11 to fix the limit blocks 15. After the pavement structure is fixed by the limit blocks 15, it is difficult for the position to move during subsequent detection, making the movement trajectory of the pressing wheel 31 on the pavement structure relatively fixed.

[0032] Refer to Figure 1 , a second driving device is installed between the moving platform 2 and the connecting plate 3. In this embodiment, a second air cylinder 21 is preferably used as the second driving device, and other structures for controlling the movement of the connecting plate 3, such as a motor, can also be used as the second driving device. After the pavement structure is placed, the second air cylinder 21 is used to push the connecting plate 3 and the pressing wheel 31 installed on the connecting plate 3 to move downward until they are pressed on the pavement structure. Due to the characteristic that the air cylinder can introduce compressed air with different air pressures, the pressure of the pressing wheel 31 pressing on the pavement structure can be controlled by controlling the air pressure of the compressed air introduced into the second air cylinder 21. When the pavement structure is worn, the second air cylinder 21 drives the connecting plate 3 and the pressing wheel 31 to move downward so that the pressing wheel 31 always presses on the pavement structure with the same pressure.

[0033] Refer to Figure 2 , the probe of the distance sensing always abuts against the upper end surface of the connecting plate 3. By recording the difference between the distance when the pressing wheel 31 is pressed on the pavement structure by the second air cylinder 21 and the distance after the test is completed, the distance by which the pavement structure is worn and sunken after the test can be obtained, thereby realizing the friction detection of the pavement structure.

[0034] Refer to Figure 1, four guide posts 23 are installed on the connecting plate 3, and guide holes are opened at corresponding positions of the moving platform 2. When the second cylinder 21 pushes the connecting plate 3 to move up and down, the movement of the connecting plate 3 is guided by the guide posts 23 and the guide holes. And when the moving platform 2 moves, the stability of the connecting plate 3 can also be improved between the inner wall of the guide hole and the guide posts 23, and the shaking of the connecting plate 3 that moves along with the moving platform 2 can be significantly reduced.

[0035] Refer to Figure 1 , in this embodiment, the first cylinder 13 is preferably used as the first driving device, and a solenoid valve 14 is installed on the first cylinder 13 to control the expansion and contraction of the first cylinder 13. The reciprocating movement of the moving platform 2 on the slide rail 12 is realized through the expansion and contraction of the first cylinder 13, and then the pressing wheel 31 repeatedly rolls and rubs on the road surface structure. By controlling the solenoid valve 14 to further control the expansion and contraction of the first cylinder 13, the number of reciprocating movements of the pressing wheel 31 on the road surface structure can be effectively controlled, and the total movement length of the pressing wheel 31 on the road surface structure can be calculated through the length of a single reciprocation, realizing the precise control of the movement of the pressing wheel 31.

[0036] Refer to Figure 1 , the moving platform 2 is provided with a connecting hole, a linear bearing 24 is installed on the inner wall of the connecting hole, and the inner wall of the linear bearing 24 is slidably connected to the slide rail 12. By using the linear bearing 24 to replace the direct contact between the moving platform 2 and the slide rail 12, the friction between the slide rail 12 and the moving platform 2 can be effectively reduced, and the linear bearing 24 makes the reciprocating movement of the moving platform 2 smoother. The connecting hole also has the function of guiding the movement of the moving platform. Through the connection relationship between the connecting hole and the slide rail 12, the moving platform 2 can only slide along the slide rail 12, and the jitter of the moving platform 2 during movement is effectively reduced.

[0037] Refer to Figure 1 , a quick-release component 32 is installed at the lower end of the connecting plate 3 to replace the pressing wheel 31 with greater wear, and pressing wheels 31 of different materials can be replaced, such as: wood, rubber, iron, etc., to realize the detection of the road surface structure by pressing wheels 31 of different materials.

[0038] In this embodiment, the lower mounting block 322 and the upper mounting block 321 are preferably used as the quick-release component 32, and the upper mounting block 321 is installed on the lower end face of the connecting plate 3. Installation grooves are formed on one side where the upper mounting block 321 and the lower mounting block 322 are close to each other. When the upper mounting block 321 and the lower mounting block 322 are closed, the shaft of the pressing wheel 31 can rotate in the installation groove. Bolts are used to pass through the lower mounting block 322 from bottom to top, and the lower mounting block 322 is fixed below the upper mounting block 321. The connection method using threaded bolts can greatly reduce the operation difficulty of the operator. Thus, it is convenient for the operator to replace the pressing wheel 31.

[0039] The implementation principle of a friction detection device for a pavement structure in an embodiment of the present application is as follows: The first cylinder 13 is used to drive the moving platform 2 and the connecting plate 3 installed on the moving platform 2 to move, and thus the pressure wheel 31 below the connecting plate 3 realizes the friction against the pavement structure as the connecting plate 3 moves. The second cylinder 21 is used to keep the pressure wheel 31 pressing on the pavement structure with the same pressure all the time. The distance of wear and depression of the pavement structure after friction detection is obtained through the distance difference measured by the distance sensor 22 before and after.

[0040] The above are all preferred embodiments of the present application. Without restricting the protection scope of the present application accordingly, therefore: All equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A road surface structure friction detection device, comprising a frame (1), characterized in that: The invention comprises a frame (1), wherein the frame (1) is provided with a slide rail (12), the slide rail (12) is provided with a moving platform (2), the slide rail (12) is provided with a first driving device for driving the moving platform (2) to slide along the slide rail (12), the moving platform (2) is provided with a connecting plate (3) and a second driving device, the second driving device is used to drive the connecting plate (3) to move up and down, a side of the connecting plate (3) close to the frame (1) is rotatably connected with a pressing wheel (31), the rotation direction of the pressing wheel (31) is the same as the length direction of the slide rail (12), the frame (1) is provided with a detection platform (11), the detection platform (11) is directly opposite to the pressing wheel (31), and the moving platform (2) is provided with a distance sensor (22) for detecting the position of the connecting plate (3).

2. A road surface structure friction detection device according to claim 1, characterized in that: The detection platform (11) is provided with a plurality of limit blocks (15), each of which is provided with a slide groove. The limit blocks (15) are connected to the frame (1) by threaded bolts. When the pavement structure is placed on the detection platform (11), the limit blocks (15) limit the pavement structure.

3. A road surface structure friction detection device according to claim 1, characterized in that: The movable platform (2) is provided with a connection hole, the inner wall of the connection hole is provided with a linear bearing (24), and the inner wall of the linear bearing (24) is slidably connected to the slide rail (12).

4. A road surface structure friction detection device according to claim 1, characterized in that: The connecting plate (3) is provided with a plurality of guide columns (23), and the movable platform (2) is provided with guide holes corresponding one to one with the guide columns (23).

5. A road surface structure friction detection device according to claim 1, characterized in that: The connecting plate (3) comprises a quick-release assembly (32) which facilitates the installation and removal of the pressing wheel (31).

6. A road surface structure friction detection device according to claim 5, characterized in that: The quick-release assembly (32) comprises a lower mounting block (322) and an upper mounting block (321); the upper mounting block (321) and the lower mounting block (322) are connected by threaded bolts; and a mounting groove for rotationally connecting to the pressure wheel (31) is provided on one side of the upper mounting block (321) and the lower mounting block (322) close to each other.

7. A road surface structure friction detection device according to claim 1, characterized in that: The first driving device is a first cylinder (13), and the first cylinder (13) is provided with a solenoid valve (14) for controlling the extension and retraction of the first cylinder (13).

8. A road surface structure friction detection device according to claim 1, characterized in that: The second driving device is a second cylinder (21).

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