A device for detecting resistance of a road pavement

Abstract

The present application relates to the technical fields of road surface resistance detection, and especially relates to a device for road surface resistance detection, which comprises a frame body, a wheel fixedly installed at the lower corner of the frame body, two symmetrical table plates fixedly installed at the upper end of the frame body, baffle plates fixedly installed on the upper surface of the table plates, movable plates movably arranged between the baffle plates in the front-rear direction, pressure wheels movably installed at the lower end of the movable plates through hydraulic mechanisms, and touch mechanisms arranged at the two sides of the movable plates, the device can heat the road surface, and the heating device is moved away with the rolling test, the heating device is returned to the original position to continue heating after the rolling, the temperature of the road surface at the test position is relatively constant during the test, and the device has good detection accuracy.

Description

Technical Field

[0001] This invention relates to the field of pavement resistance testing technology, and more particularly to a device for testing the resistance of road pavement. Background Technology

[0002] To provide safe, fast, and comfortable driving conditions for automobile transportation, asphalt pavement should be solid, smooth, skid-resistant, and durable. It should also be resistant to rutting at high temperatures, cracking at low temperatures, water damage, and prevent rainwater from seeping into the base layer.

[0003] In existing technologies, the strength of road surfaces is usually tested by hammering. However, there is no way to test the high-temperature rutting resistance. That is, when the road surface is indented by wheels at high temperatures, the resistance of this part of the road surface is difficult to test in existing technologies. In response, we propose a device for testing the resistance of road surfaces. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by proposing a device for testing the resistance of road surfaces.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: 1. A device for road surface resistance testing, comprising a frame and wheels fixedly installed at the lower corner of the frame, two symmetrical platforms fixedly installed at the upper end of the frame, baffles fixedly installed on the upper surface of the platforms, a movable plate movably arranged between the baffles on both sides in the front-back direction, a pressure roller movably installed at the lower end of the movable plate through a hydraulic mechanism, and a contact mechanism provided on both sides of the movable plate;

[0006] The side of the baffle is slidably fitted with several push plates through an elastic mechanism. The front and rear sides of the push plates are respectively connected to inclined plates. A ventilation box is fixedly installed on the lower end face of the push plate. Several ventilation boxes are arranged in an array, and the lower sides of adjacent ventilation boxes are closely attached.

[0007] The ventilation box is equipped with a heating device.

[0008] Preferably, a threaded lead screw is provided through the inner side of the movable plate, and a connecting seat is fixedly connected to the upper surface of the two platforms near the front and rear ends. The lead screw passes through the connecting seat and rotates with each other. One end of the lead screw is fixedly connected to the output shaft of the motor, and the motor is fixedly installed at the edge of the platform.

[0009] Preferably, the hydraulic mechanism includes a telescopic cylinder fixedly installed on the lower surface of the movable plate, a wheel frame fixedly connected to the telescopic end of the telescopic cylinder, and a pressure wheel rotatably installed inside the wheel frame. A telescopic rod is provided between the wheel frame and the movable plate.

[0010] Preferably, the touch mechanism includes a concave frame fixedly installed on the side of the movable plate and a stop block fixedly installed on the inner side of the concave frame. The stop block is movably in contact with the side surface of the baffle, and guide wheels are rotatably installed at the front and rear ends of the concave frame, respectively.

[0011] Preferably, guide rollers are rotatably mounted on the lower surface of the concave frame near the front and rear ends, and the guide rollers contact the upper surface of the platform.

[0012] Preferably, the elastic mechanism includes a folding plate fixedly connected to the lower side of the push plate, a T-shaped column fixedly connected to the side of the folding plate, and a compression spring movably sleeved on the outer surface of the T-shaped column. A fixing plate is fixedly connected to the upper surface of the platform, the T-shaped column slides through the fixing plate, and the compression spring is located between the fixing plate and the folding plate.

[0013] Preferably, a connecting frame is fixedly installed on the lower surface of the push plate, and a mounting plate is fixedly connected to the lower end of the connecting frame. The mounting plate is fixedly installed on the upper surface of the ventilation box. A transverse rod is fixedly installed on the outer surface of the connecting frame. Side wheels are rotatably installed at both ends of the transverse rod. A wheel rail is fixedly installed on the lower surface of the platform, and the side wheels are movably engaged with the inner side of the wheel rail.

[0014] Preferably, the heating device includes a ventilation plate fixedly installed at the lower end of the ventilation box and heating wires fixedly installed on the inner wall of the ventilation box. Several heating plates are fixedly installed on the upper surface of the ventilation plate, and an air inlet is provided on the upper end face of the ventilation box. The air inlet is connected to an air supply mechanism.

[0015] Preferably, the air supply mechanism includes a fan fixedly installed inside the frame, a main pipe fixedly installed at the air outlet of the fan, and several branch pipes fixedly installed on the outer surface of the main pipe. The branch pipes are connected to the upper end of the air inlet. A stabilizing rod is fixedly installed between the rear end of the main pipe and the frame, and a stabilizing frame is fixedly installed between the main pipe and the lower side of the frame.

[0016] Preferably, a first guide plate and a second guide plate are fixedly provided on the inner side of the ventilation box, and the first guide plate and the second guide plate are connected to each other in an alternating manner.

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

[0018] 1. This invention can heat the road surface and remove the heating device as the compaction test is carried out. After compaction, the heating device returns to its original position to continue heating, ensuring that the road surface temperature at the test location is relatively constant during the test and has good detection accuracy.

[0019] 2. The frame is placed at the location to be tested. When the fan is running, the air is sent into each ventilation box through the main pipe and branch pipes. After passing through the first guide plate and the second guide plate, the air is split and dispersed more evenly before flowing downwards. The air is heated by the heating wire and then sent out through the ventilation plate. At the same time, the heating plate can help heat the ventilation plate, so that the air blown out below is hot air, thereby heating the road surface. Therefore, this equipment can heat and control the temperature of the road surface and test the high-temperature crease resistance of the road surface.

[0020] 3. The motor rotates, causing the lead screw to rotate, which moves the movable plate forward. The pressure roller rolls on the road surface for compaction testing. As it moves forward, the guide wheel contacts the inclined plate, causing the push plate to move away, which in turn causes the ventilation box to move away, ensuring the pressure roller continues to move. When the rear guide wheel moves away from the inclined plate, the push plate moves back to its original position under the elastic force of the compression spring. At this time, the ventilation box also moves back, continuing to heat the compacted area. Therefore, when the pressure roller moves backward, compaction testing can be performed again, ensuring a relatively constant ground temperature during testing and improving the accuracy of the test.

[0021] 4. By controlling the extension of the telescopic cylinder, the wheel frame moves downward, thus changing the pressure of the pressure roller on the ground. As the pressure inside the telescopic cylinder increases, the pressure on the road surface also changes, in order to test the road surface's resistance to different pressures at a certain temperature. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a device for road surface resistance testing according to the present invention;

[0023] Figure 2 This is a schematic diagram from another perspective of a device for detecting the resistance of road surfaces according to the present invention;

[0024] Figure 3 This is a partial structural schematic diagram of a device for road surface resistance testing according to the present invention;

[0025] Figure 4 This is a schematic diagram of a partial structure of a road pavement resistance testing device according to the present invention from another perspective;

[0026] Figure 5 This is a schematic diagram of the pressure roller of a device for road surface resistance testing according to the present invention;

[0027] Figure 6 This is a schematic diagram of the introduction of a device for road surface resistance testing according to the present invention;

[0028] Figure 7 This is a schematic diagram of the wheel-rail section of an equipment for road surface resistance testing according to the present invention;

[0029] Figure 8This is a cross-sectional view of the ventilation box of a device for road surface resistance testing according to the present invention;

[0030] Figure 9 This is a schematic diagram of the first guide plate and the second guide plate of a device for road surface resistance testing according to the present invention;

[0031] Figure 10 This is a schematic diagram of the air supply device of an equipment for road surface resistance testing according to the present invention;

[0032] Figure 11 This is a schematic diagram of the end of the frame of an equipment for road surface resistance testing according to the present invention.

[0033] 1. Frame; 2. Wheels; 3. Platform; 4. Baffle; 5. Movable plate; 6. Concave frame; 7. Abutment; 8. Guide wheel; 9. Guide roller; 10. Lead screw; 11. Connecting seat; 12. Motor; 13. Telescopic cylinder; 14. Telescopic rod; 15. Wheel frame; 16. Pressure roller; 17. Push plate; 18. Inclined plate; 19. Folding plate; 20. T-shaped column; 21. Compression spring; 22. Fixing plate; 23. Connector Frame; 24. Horizontal bar; 25. Side wheel; 26. Wheel rail; 27. Mounting plate; 28. Ventilation box; 29. ​​Ventilation plate; 30. Heating plate; 31. Heating wire; 32. First guide plate; 33. Second guide plate; 34. Air inlet; 35. Branch pipe; 36. Main pipe; 37. Stabilizing bar; 38. Stabilizing frame; 39. Fan; 40. Top plate; 41. Friction plate; 42. Vertical cylinder; 43. Guide rod. Detailed Implementation

[0034] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0035] like Figures 1-11 The device shown is for road surface resistance testing, including a frame 1, wheels 2 fixedly installed at the lower corner of the frame 1, two symmetrical platforms 3 fixedly installed at the upper end of the frame 1, baffles 4 fixedly installed on the upper surface of the platforms 3, and movable plates 5 movably arranged between the two baffles 4 in the front-back direction. Pressure rollers 16 are movably installed at the lower end of the movable plates 5 through a hydraulic mechanism, and contact mechanisms are provided on both sides of the movable plates 5.

[0036] A number of push plates 17 are slidably inserted into the side of the baffle 4 via an elastic mechanism. The front and rear sides of the push plates 17 are respectively connected to inclined plates 18. A ventilation box 28 is fixedly installed on the lower end face of the push plate 17. A number of ventilation boxes 28 are arranged in an array, and the lower sides of adjacent ventilation boxes 28 are closely attached.

[0037] A heating device is installed inside the ventilation box 28.

[0038] This invention can heat the road surface and remove the heating device as the compaction test proceeds. After compaction, the heating device returns to its original position to continue heating, ensuring that the road surface temperature at the test location remains relatively constant during the test and providing good detection accuracy.

[0039] like Figure 4 , Figure 5 As shown, a threaded lead screw 10 is threaded through the inner side of the movable plate 5. Connecting seats 11 are fixedly connected to the upper surfaces of the two plates 3 near the front and rear ends. The lead screw 10 passes through the connecting seats 11 and rotates with each other. One end of the lead screw 10 is fixedly connected to the output shaft of the motor 12, and the motor 12 is fixedly installed at the edge of the plate 3. The motor 12 drives the lead screw 10 to rotate, which makes the movable plate 5 move back and forth.

[0040] like Figure 5 As shown, the hydraulic mechanism includes a telescopic cylinder 13 fixedly installed on the lower surface of the movable plate 5, a wheel frame 15 fixedly connected to the telescopic end of the telescopic cylinder 13, and a pressure roller 16 rotatably installed inside the wheel frame 15. A telescopic rod 14 is provided between the wheel frame 15 and the movable plate 5. The telescopic rod 14 consists of a cylinder and a rod inserted into the inner side of the cylinder, which can improve the stability of the wheel frame 15 when it moves up and down.

[0041] like Figure 5 , Figure 6 As shown, the contact mechanism includes a concave frame 6 fixedly installed on the side of the movable plate 5 and a stop block 7 fixedly installed inside the concave frame 6. The stop block 7 is in movable contact with the side surface of the baffle 4. Guide wheels 8 are rotatably installed at the front and rear ends of the concave frame 6, respectively. The guide wheels 8 are used to contact the inclined plate 18, thereby pushing the baffle 4. Guide rollers 9 are rotatably installed on the lower surface of the concave frame 6 near the front and rear ends, respectively. The guide rollers 9 contact the upper surface of the platform 3, and the guide rollers 9 can improve the stability of the back-and-forth movement of the movable plate 5.

[0042] like Figure 7 , Figure 8 As shown, the elastic mechanism includes a folding plate 19 fixedly connected to the lower side of the push plate 17, a T-shaped column 20 fixedly connected to the side of the folding plate 19, and a compression spring 21 movably sleeved on the outer surface of the T-shaped column 20. A fixing plate 22 is fixedly connected to the upper surface of the platform 3. The T-shaped column 20 slides through the fixing plate 22. The compression spring 21 is located between the fixing plate 22 and the folding plate 19 and is used to provide power for the reset of the push plate 17.

[0043] like Figure 8 , Figure 9 and Figure 10As shown, a connecting frame 23 is fixedly installed on the lower surface of the push plate 17, and a mounting plate 27 is fixedly connected to the lower end of the connecting frame 23. The mounting plate 27 is fixedly installed on the upper surface of the ventilation box 28. A transverse rod 24 is fixedly installed on the outer surface of the connecting frame 23. Side wheels 25 are rotatably installed at both ends of the transverse rod 24. A wheel rail 26 is fixedly installed on the lower surface of the platform 3, and the side wheels 25 are movably inserted into the inner side of the wheel rail 26.

[0044] The heating device includes a ventilation plate 29 fixedly installed at the lower end of the ventilation box 28 and a heating wire 31 fixedly installed on the inner wall of the ventilation box 28. Several heating plates 30 are fixedly installed on the upper surface of the ventilation plate 29. An air inlet 34 is provided on the upper end of the ventilation box 28. The air inlet 34 is connected to an air supply mechanism. The air supply mechanism includes a fan 39 fixedly installed inside the frame 1, a main pipe 36 fixedly installed at the air outlet of the fan 39, and several branch pipes 35 fixedly installed on the outer surface of the main pipe 36. The branch pipes 35 are connected to the upper end of the air inlet 34. A stabilizing rod 37 is fixedly installed between the rear end of the main pipe 36 and the frame 1. A stabilizing frame 38 is fixedly installed between the main pipe 36 and the lower side of the frame 1. The stabilizing rod 37 and the stabilizing frame 38 are used to maintain the stability of the main pipe 36.

[0045] The ventilation box 28 is fixedly provided with a first guide plate 32 and a second guide plate 33. The first guide plate 32 and the second guide plate 33 are connected to each other in an alternating manner to guide and divert the air. The inclined first guide plate 32 and the second guide plate 33 can diffuse the air to ensure that it can be fully heated when passing through the heating wire 31.

[0046] like Figure 11 The frame 1 has an upper plate 40 fixedly installed near the bottom. The lower surface of the upper plate 40 is movably mounted with a friction plate 41 via a vertical cylinder 42. The upper surface of the friction plate 41 is fixedly connected to guide rods 43 near both sides. The upper end of the guide rods 43 slides through the upper plate 40. When the vertical cylinder 42 extends, the friction plate 41 moves down, pressing and locking the wheel 2. This ensures that the entire device is relatively stable during the test of the pressure wheel 16.

[0047] In use, the frame 1 is placed on the road surface to be tested. When the fan 39 is running, the air is sent into each ventilation box 28 through the action of the main pipe 36 and the branch pipe 35. After passing through the action of the first guide plate 32 and the second guide plate 33, the air is split and dispersed more evenly before flowing downward. The air is heated by the heating wire 31 and then sent out through the ventilation plate 29. At the same time, the heating plate 30 can help heat the ventilation plate 29, so that the air blown out from below is hot air, thereby heating the road surface. Therefore, this equipment can heat and control the temperature of the road surface and test the high-temperature crease resistance of the road surface. The motor 12 rotates, causing the lead screw 10 to rotate, which moves the movable plate 5 forward. The pressure roller 16 rolls on the road surface for compaction testing. As it moves forward, the guide wheel 8 contacts the inclined plate 18, causing the push plate 17 to move away, which in turn causes the ventilation box 28 to move away, ensuring the pressure roller 16 can continue moving. When the rear guide wheel 8 moves away from the inclined plate 18, the push plate 17 moves back to its original position under the elastic force of the compression spring 21. At this time, the ventilation box 28 also moves back, continuing to heat the compacted area. Therefore, when the pressure roller 16 moves backward, compaction testing can be performed again, ensuring a relatively constant ground temperature during testing and improving the accuracy of the test. By controlling the extension of the telescopic cylinder 13, the wheel frame 15 moves downward, thus changing the pressure of the pressure roller 16 on the ground. As the pressure inside the telescopic cylinder 13 increases, the pressure on the road surface also changes, testing the road surface's resistance to different pressures at a certain temperature.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A device for testing the resistance of road surface, comprising a frame (1) and wheels (2) fixedly installed at the lower corner of the frame (1), characterized in that: Two symmetrical platforms (3) are fixedly installed on the upper end of the frame (1). A baffle (4) is fixedly installed on the upper surface of the platform (3). A movable plate (5) is movably arranged between the two baffles (4) in the front-back direction. A pressure roller (16) is movably installed at the lower end of the movable plate (5) through a hydraulic mechanism. A touch mechanism is provided on both sides of the movable plate (5). The side of the baffle (4) is slidably fitted with several push plates (17) through an elastic mechanism. The front and rear sides of the push plates (17) are respectively connected to inclined plates (18). A ventilation box (28) is fixedly installed on the lower end face of the push plate (17). Several ventilation boxes (28) are arranged in an array, and the lower sides of adjacent ventilation boxes (28) are closely attached. A heating device is installed inside the ventilation box (28); The touch mechanism includes a concave frame (6) fixedly installed on the side of the movable plate (5) and a stop block (7) fixedly installed on the inside of the concave frame (6). The stop block (7) is in contact with the side surface of the baffle (4). The front and rear ends of the concave frame (6) are respectively rotatably installed with guide wheels (8). Guide rollers (9) are rotatably mounted on the lower surface of the concave frame (6) near the front and rear ends, and the guide rollers (9) contact the upper surface of the platform (3); The elastic mechanism includes a folding plate (19) fixedly connected to the bottom of the push plate (17), a T-shaped column (20) fixedly connected to the side of the folding plate (19), and a compression spring (21) movably sleeved on the outer surface of the T-shaped column (20). A fixing plate (22) is fixedly connected to the upper surface of the platform (3). The T-shaped column (20) slides through the fixing plate (22). The compression spring (21) is located between the fixing plate (22) and the folding plate (19).

2. The device for road surface resistance testing according to claim 1, characterized in that: The inner side of the movable plate (5) is provided with a threaded screw (10). The upper surfaces of the two platforms (3) are fixedly connected to the front and rear ends with connecting seats (11). The screw (10) passes through the connecting seats (11) and rotates with each other. One end of the screw (10) is fixedly connected to the output shaft of the motor (12), and the motor (12) is fixedly installed at the edge of the platform (3).

3. The device for road surface resistance testing according to claim 1, characterized in that: The hydraulic mechanism includes a telescopic cylinder (13) fixedly installed on the lower surface of the movable plate (5), a wheel frame (15) fixedly connected to the telescopic end of the telescopic cylinder (13), and a pressure wheel (16) rotatably installed inside the wheel frame (15). A telescopic rod (14) is provided between the wheel frame (15) and the movable plate (5).

4. The device for road surface resistance testing according to claim 1, characterized in that: A connecting frame (23) is fixedly installed on the lower surface of the push plate (17). A mounting plate (27) is fixedly connected to the lower end of the connecting frame (23). The mounting plate (27) is fixedly installed on the upper surface of the ventilation box (28). A transverse rod (24) is fixedly installed on the outer surface of the connecting frame (23). Side wheels (25) are rotatably installed at both ends of the transverse rod (24). A wheel rail (26) is fixedly installed on the lower surface of the platform (3). The side wheel (25) is movably inserted into the inner side of the wheel rail (26).

5. The device for road surface resistance testing according to claim 1, characterized in that: The heating device includes a ventilation plate (29) fixedly installed at the lower end of the ventilation box (28) and a heating wire (31) fixedly installed on the inner wall of the ventilation box (28). Several heating plates (30) are fixedly installed on the upper surface of the ventilation plate (29). An air inlet (34) is provided on the upper end of the ventilation box (28). The air inlet (34) is connected to an air supply mechanism.

6. The device for road surface resistance testing according to claim 5, characterized in that: The air supply mechanism includes a fan (39) fixedly installed inside the frame (1), a main pipe (36) fixedly installed at the air outlet of the fan (39), and several branch pipes (35) fixedly installed on the outer surface of the main pipe (36). The branch pipes (35) are connected to the upper end of the air inlet (34). A stabilizing rod (37) is fixedly installed between the rear end of the main pipe (36) and the frame (1). A stabilizing frame (38) is fixedly installed between the main pipe (36) and the lower side of the frame (1).

7. The device for road surface resistance testing according to claim 1, characterized in that: The ventilation box (28) is fixedly provided with a first guide plate (32) and a second guide plate (33), and the first guide plate (32) and the second guide plate (33) are connected to each other in an alternating manner.

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