Pavement skid resistance detection device

Abstract

The utility model discloses a pavement skid resistance detection device which comprises a pendulum instrument body, the outer wall of the pendulum instrument body is rotatably connected with a swing rod, one end of the swing rod is fixedly provided with a swing head, the inner wall of the swing head is provided with a mounting column, the outer wall of the mounting column is provided with a mounting seat, the outer wall of the mounting seat is fixedly provided with a screw rod, and the outer wall of the screw rod is slidably connected with a clamping block. Protruding blocks are fixed to the outer walls of one sides of the clamping blocks, a set of clamping frames are inserted into the outer walls of one sides of the clamping blocks, fixing holes are formed in the outer walls of one sides of the clamping frames and fixed to the outer walls of one sides of the clamping blocks through screws, a set of connecting strips are fixed to the outer walls of the opposite sides of the clamping frames, and rubber strips are arranged on the outer walls of the opposite sides of the clamping frames and the protruding blocks in a clamped mode. According to the rubber strip replacing device, a worker can conveniently replace the rubber strip, meanwhile, the abrasion degree of the outer wall of the rubber strip can be judged through the relative position between the outer wall of the rubber strip and the connecting strip, the worker can accurately master the thickness of the rubber strip, and therefore the abraded rubber strip can be replaced in time.

Description

Technical Field

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

[0002] In recent years, with the rapid development of highways and motor vehicles in my country, driving comfort and safety have received increasing attention. This issue is reflected in highway construction, including pavement skid resistance. Whether constructing new highways or renovating existing ones, skid resistance is a crucial pavement performance indicator in design and construction, directly reflecting driving safety. In pavement skid resistance testing, a pointer-type pendulum meter is typically used to measure the coefficient of friction. The pendulum meter measures the change in torque transmitted by the pendulum rod when a rubber strip slides over a specific road surface, using torque to characterize the coefficient of friction. Traditional pendulum meter sample clamps are rigid planes, with the rubber strip fixed to the clamp by adhesive, making rubber strip replacement inconvenient.

[0003] A search revealed a Chinese patent application with patent number CN202321286140.0, which discloses a pendulum device including a support mechanism and a swing mechanism. However, the above technical solution does not include a mechanism for easily replacing worn rubber strips, thus making it inconvenient for staff to quickly replace the rubber strips. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a road surface skid resistance testing device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A road surface skid resistance testing device includes a pendulum instrument body. A pendulum rod is rotatably connected to the outer wall of the pendulum instrument body. A pendulum head is fixed to one end of the pendulum rod. A mounting column is provided on the inner wall of the pendulum head. A mounting seat is provided on the outer wall of the mounting column. A screw is fixed to the outer wall of the mounting seat. A clamping block is slidably connected to the outer wall of the screw. A protrusion is fixed to one side of the outer wall of the clamping block. A set of clip frames is inserted into one side of the outer wall of the clip frames. A fixing hole is opened on one side of the outer wall of the clip frames. The fixing hole is fixed to one side of the outer wall of the clamping block by screws. A set of connecting strips is fixed to the opposite side of the outer wall of the clip frames. Rubber strips are clamped between the opposite side of the outer walls of the clip frames and the protrusion.

[0007] As a further improvement of this utility model: the top of the screw is connected to a nut by a thread, and a limit ring is fixed to the outer wall of the screw.

[0008] As a further improvement of this utility model: a set of clips is fixed to the outer wall of one side of the clamping block, and a friction pad is provided on the inner wall of one side of the clamping frame.

[0009] As a further improvement of this utility model: the outer walls on both sides of the clamping block are respectively provided with internal threaded holes, and the inner walls of the internal threaded holes are connected to threaded rods by threads.

[0010] As a further improvement of this utility model: one end of the threaded rod is rotatably connected to a connecting piece, and a limit frame is fixed to one side of the outer wall of the connecting piece.

[0011] As a further improvement of this utility model: a set of guide rails are respectively opened on the upper and lower outer walls of the clamping block, and the limiting frame is slidably connected to the inner wall of the guide rails.

[0012] As a further improvement of this utility model, a set of limiting strips is fixed on one side of the outer wall of the protrusion.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. Insert the new rubber strip through the gap between the two connecting strips and the two clip frames into one side of the protrusion and clamping block, so that both ends of the rubber strip are attached to the inclined surfaces on both sides of the protrusion. Then, the operator can use screws to press and fix the entire clip frame to one side of the clamping block, so that the clip frame can clamp the two ends of the rubber strip attached to the inclined surfaces on both sides of the protrusion to one side of the protrusion. Then, reinstall the clamping block on the outer wall of the screw, and the rubber strip can be replaced quickly and conveniently.

[0015] 2. Workers can judge the degree of wear on the outer wall of the rubber strip by the relative position between the outer wall of the rubber strip and the connecting strip, so that they can accurately grasp the thickness of the rubber strip and replace the worn rubber strip in a timely manner.

[0016] 3. When the rubber strip needs to be replaced, the threaded rod can be rotated to move the entire limiting frame outward under the guidance of the guide rail, thereby releasing the clamping and fixing of both ends of the rubber strip. Then the rubber strip can be pulled out from one side of the protrusion. After placing the new rubber strip on one side of the protrusion, the threaded rod can be rotated in the opposite direction to move the entire limiting frame back, allowing the limiting frame to clamp both ends of the rubber strip again and quickly fix the new rubber strip on one side of the protrusion. Attached Figure Description

[0017] Figure 1 This is a front view schematic diagram of a road surface skid resistance testing device proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the swing head structure of a road surface skid resistance testing device proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the clamping block structure of a road surface skid resistance testing device proposed in this utility model;

[0020] Figure 4 This is a schematic diagram of the frame structure of a road surface skid resistance testing device proposed in this utility model;

[0021] Figure 5 This is a schematic diagram of Embodiment 2 of the road surface skid resistance testing device proposed in this utility model;

[0022] Figure 6 This is a schematic diagram of the limiting frame structure of a road surface skid resistance testing device proposed in this utility model.

[0023] In the diagram: 1-Pendulum instrument body, 2-Pendulum rod, 3-Pendulum head, 4-Nut, 5-Rubber strip, 6-Mounting column, 7-Clamping block, 8-Clip frame, 9-Mounting base, 10-Limiting ring, 11-Screw, 12-Clamping strip, 13-Protrusion, 14-Connecting strip, 15-Friction pad, 16-Fixing hole, 17-Limiting strip, 18-Connecting piece, 19-Internal threaded hole, 20-Threaded rod, 21-Guide slide rail, 22-Limiting frame. Detailed Implementation

[0024] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0025] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0026] Example 1

[0027] A road surface skid resistance testing device, such as Figure 1-6 As shown, the device includes a pendulum instrument body 1. A pendulum rod 2 is rotatably connected to the outer wall of the pendulum instrument body 1. A pendulum head 3 is fixed to one end of the pendulum rod 2. A mounting post 6 is provided on the inner wall of the pendulum head 3. A mounting seat 9 is provided on the outer wall of the mounting post 6. A screw 11 is fixed to the outer wall of the mounting seat 9. A clamping block 7 is slidably connected to the outer wall of the screw 11. A protrusion 13 is fixed to one side of the outer wall of the clamping block 7. A set of clip frames 8 are inserted into one side of the outer wall of the clip frame 7. A fixing hole 16 is opened on one side of the outer wall of the clip frame 8. The fixing hole 16 is fixed to one side of the outer wall of the clip frame 7 by screws. A set of connecting strips 14 is fixed to the opposite side of the outer wall of the clip frame 8. A rubber strip 5 is clamped between the clip frame 8 and the protrusion 13 on the opposite side of the outer wall.

[0028] The top end of the screw 11 is threadedly connected to a nut 4, and a limit ring 10 is fixed to the outer wall of the screw 11.

[0029] A set of clips 12 is fixed to one side of the outer wall of the clamping block 7, and a friction pad 15 is provided on one side of the inner wall of the clamping frame 8.

[0030] As the rubber strip 5 wears down, when the thickness of one side of the rubber strip 5 decreases to the same level as the connecting strips 14 on both sides, it indicates that the rubber strip 5 can no longer perform friction coefficient testing normally. At this time, the staff can unscrew the nut 4 from the top of the screw 11 and pull the clamping block 7 out of the screw 11. Then, after unscrewing the screws of the fixing frame 8, the frame consisting of the frame 8 and the connecting strip 14 can be taken out from one side of the clamping block 7, and the rubber strip 5 can be taken out from one side of the clamping block 7.

[0031] Then, insert the connecting strip 14 and the clip frame 8 back into one side of the clamping block 7. At this time, the two clips 12 on one side of the clamping block 7 can limit the entire clip frame 8. Then, insert the new rubber strip 5 through the gap between the two connecting strips 14 and the two clip frames 8 into the protrusion 13 and one side of the clamping block 7, so that the two ends of the rubber strip 5 are attached to the inclined surfaces on both sides of the protrusion 13. Then, the staff can press and fix the clip frame 8 to one side of the clamping block 7 with screws, so that the clip frame 8 can clamp the two ends of the rubber strip 5 attached to the inclined surfaces on both sides of the protrusion 13 to one side of the protrusion 13. Then, the clamping block 7 is reinstalled on the outer wall of the screw 11, and the replacement of the rubber strip 5 can be completed quickly and conveniently.

[0032] Workers can determine the degree of wear on the outer wall of the rubber strip 5 by observing the relative position between the outer wall of the rubber strip 5 and the connecting strip 14. This allows workers to accurately determine the thickness of the rubber strip 5 and replace the worn rubber strip 5 in a timely manner.

[0033] Working principle: As the rubber strip 5 wears down, when the thickness of one side of the rubber strip 5 decreases to the same level as the connecting strips 14 on both sides, it indicates that the rubber strip 5 can no longer perform friction coefficient testing normally. At this time, the operator unscrews the nut 4 from the top of the screw 11, and the clamping block 7 can be pulled out from the screw 11 as a whole. Then, after unscrewing the screws of the fixing frame 8, the frame composed of the frame 8 and the connecting strip 14 can be taken out from one side of the clamping block 7, and the rubber strip 5 can be taken out from one side of the clamping block 7.

[0034] Then, insert the connecting strip 14 and the clip frame 8 back into one side of the clamping block 7. At this time, the two clips 12 on one side of the clamping block 7 can limit the entire clip frame 8. Then, insert the new rubber strip 5 through the gap between the two connecting strips 14 and the two clip frames 8 into the protrusion 13 and one side of the clamping block 7, so that the two ends of the rubber strip 5 are attached to the inclined surfaces on both sides of the protrusion 13. Then, the operator can use screws to press and fix the entire clip frame 8 to one side of the clamping block 7, so that the clip frame 8 can clamp the two ends of the rubber strip 5 attached to the inclined surfaces on both sides of the protrusion 13 to one side of the protrusion 13. Then, reinstall the clamping block 7 on the outer wall of the screw 11, and the replacement of the rubber strip 5 can be completed quickly and conveniently.

[0035] Example 2

[0036] A road surface skid resistance testing device, such as Figure 5-6 As shown, this embodiment makes the following improvements based on embodiment 1: the outer walls on both sides of the clamping block 7 are respectively provided with internal threaded holes 19, and the inner walls of the internal threaded holes 19 are connected to threaded rods 20 by threads;

[0037] One end of the threaded rod 20 is rotatably connected to a connecting piece 18, and a limit frame 22 is fixed to one outer wall of the connecting piece 18.

[0038] The clamping block 7 has a set of guide rails 21 on its upper and lower outer walls, and the limiting frame 22 is slidably connected to the inner wall of the guide rails 21.

[0039] A set of limiting strips 17 are fixed to one side of the outer wall of the protrusion 13;

[0040] When the rubber strip 5 needs to be replaced, the threaded rod 20 can be rotated to drive the limiting frame 22 to move outward under the guidance of the guide rail 21, thereby releasing the clamping and fixing of the two ends of the rubber strip 5. Then the rubber strip 5 can be pulled out from the side of the protrusion 13. After the new rubber strip 5 is placed on the side of the protrusion 13, the threaded rod 20 can be rotated in the opposite direction to drive the limiting frame 22 to move back, so that the limiting frame 22 can clamp the two ends of the rubber strip 5 again and quickly fix the new rubber strip 5 on the side of the protrusion 13.

[0041] In this embodiment, the thread helix angle of the threaded connection between the threaded rod 20 and the internal threaded hole 19 is less than or equal to the equivalent friction angle, thereby enabling the threaded connection between the threaded rod 20 and the internal threaded hole 19 to be self-locking.

[0042] The limiting strip 17 can clamp and limit the two ends of the rubber strip 5 that is clamped and fixed on one side of the protrusion 13. At the same time, the wear degree of the outer wall of the rubber strip 5 can be judged by the relative position between the outer wall of the rubber strip 5 and the limiting strip 17.

[0043] Working principle: By rotating the threaded rod 20, the limiting frame 22 moves outward under the guidance of the guide rail 21, thereby releasing the clamping and fixing of the two ends of the rubber strip 5. Then, the rubber strip 5 can be pulled out from one side of the protrusion 13. After placing the new rubber strip 5 on one side of the protrusion 13, the threaded rod 20 can be rotated in the opposite direction, thereby moving the limiting frame 22 back, allowing the limiting frame 22 to clamp the two ends of the rubber strip 5 again, and quickly fixing the new rubber strip 5 on one side of the protrusion 13.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A road surface skid resistance testing device, comprising a pendulum instrument body (1), characterized in that, The pendulum instrument body (1) is rotatably connected to a pendulum rod (2). One end of the pendulum rod (2) is fixed with a pendulum head (3). The inner wall of the pendulum head (3) is provided with a mounting post (6). The outer wall of the mounting post (6) is provided with a mounting seat (9). The outer wall of the mounting seat (9) is fixed with a screw (11). The outer wall of the screw (11) is slidably connected with a clamping block (7). One side of the outer wall of the clamping block (7) is fixed with a protrusion (13). One side of the outer wall of the clamping block (7) is inserted with a set of clip frames (8). One side of the outer wall of the clip frame (8) is opened with a fixing hole (16). The fixing hole (16) is fixed to one side of the outer wall of the clamping block (7) by screws. One side of the outer wall of the clip frame (8) is fixed with a set of connecting strips (14). The clip frame (8) and the protrusion (13) are clamped with rubber strips (5) on the opposite side of the outer wall.

2. The road surface skid resistance testing device according to claim 1, characterized in that, The top of the screw (11) is connected to a nut (4) by a thread, and a limit ring (10) is fixed on the outer wall of the screw (11).

3. The road surface skid resistance testing device according to claim 1, characterized in that, A set of clips (12) is fixed on one side of the outer wall of the clamping block (7), and a friction pad (15) is provided on one side of the inner wall of the clamping frame (8).

4. The road surface skid resistance detection device according to claim 1, wherein The clamping block (7) has internal threaded holes (19) on its outer walls on both sides, and the inner wall of the internal threaded holes (19) is connected to a threaded rod (20) by thread.

5. The road surface skid resistance testing device according to claim 4, characterized in that, One end of the threaded rod (20) is rotatably connected to a connecting piece (18), and a limit frame (22) is fixed on one side of the outer wall of the connecting piece (18).

6. The road surface skid resistance testing device according to claim 4, characterized in that, The clamping block (7) has a set of guide rails (21) on its upper and lower outer walls respectively, and the limiting frame (22) is slidably connected to the inner wall of the guide rails (21).

7. The road surface skid resistance testing device according to claim 6, characterized in that, A set of limiting strips (17) is fixed on one side of the outer wall of the protrusion (13).

Images