A device for detecting the skid resistance of asphalt pavement

Abstract

The utility model provides a kind of asphalt pavement skid resistance detection device, belong to road detection technical field;Including detection box, the top end fixedly connected with top frame in the inside of detection box, rotationally connected with pivot between top frame and detection box, the pivot bottom end fixedly connected with swing lever, the swing lever bottom end fixedly connected with the detection assembly for asphalt pavement skid resistance detection, angle detector is fixedly connected with one side of pivot outside top frame;The utility model is by being provided with detection box, drive component and angle detector, so that detection box can provide sealed space for detection work, avoid external interference, and by drive rod and the telescopic rod of electric cylinder one end can cooperate with clamping hole, swing lever drive is completed, cooperate with angle detector, the rotation angle of pivot and swing lever can be detected, and display control screen is shown by being passed through, can automatically complete detection judgment, without manual, ensure the detection accuracy of device.

Description

Technical Field

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

[0002] The skid resistance of asphalt pavement is a key performance indicator that directly affects the safety of vehicle driving. Therefore, it is necessary to use skid resistance testing devices to test the skid resistance of asphalt pavement.

[0003] The patent with publication number CN217638627U discloses a device for testing the anti-skid performance of asphalt pavement, including a base, a column, a test plate, a test pointer rotatably connected to the column via a damping mechanism, and a test pendulum. The test plate is provided with scale markings, and the test pendulum can contact the test pointer and drive the test pointer to move so that the test pointer points to one of the scale markings. The base is also provided with an automatic water spraying mechanism, which is tilted downwards to spray water onto the asphalt pavement to be tested.

[0004] In the above case, the friction coefficient of the road surface is determined by observing the rotation angle of the test pendulum with the human eye. However, this requires manual observation of the pendulum's swing, which can easily lead to misjudgment. Furthermore, the test pendulum is directly exposed to the outside, which can easily affect the accuracy of the test when there is wind. Utility Model Content

[0005] The purpose of this invention is to provide a device for testing the anti-skid performance of asphalt pavement, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an asphalt pavement skid resistance testing device, comprising a testing box, a top frame fixedly connected to the top of the inner side of the testing box, a rotating shaft rotatably connected between the top frame and the testing box, a swing rod fixedly connected to the bottom of the rotating shaft, a testing component for asphalt pavement skid resistance testing fixedly connected to the bottom of the swing rod, an angle detector fixedly connected to the outside of the top frame on one side of the rotating shaft, a driving component rotatably connected to one side of the testing box, a locking hole opened at the bottom of the swing rod, and the bottom of the driving component penetrating into the inner side of the testing box and extending into the inner side of the locking hole.

[0007] In a preferred embodiment, the driving assembly includes a driving rod rotatably connected to the outside of the detection box, a slider fixedly connected to the bottom end of the driving rod, a swing groove adapted to the slider being opened inside the detection box, baffles with shapes adapted to the swing groove being fixedly connected to both sides of the slider, and a forward and reverse motor fixedly connected to the outside of the detection box, the output end of which is fixedly connected to the top end of the driving rod.

[0008] In a preferred embodiment, the slider is slidably connected to the inside of the swing groove, an electric cylinder is fixedly connected to the inside of the slider, an electric cylinder is fixedly connected inside the electric cylinder, and a telescopic block adapted to the card hole is fixedly connected to one end of the electric cylinder located inside the detection box, which is slidably connected to the inside of the card hole.

[0009] In a preferred embodiment, the detection assembly includes a swing block fixedly connected to the bottom of the swing rod, and a bidirectional lead screw is rotatably connected to the inner side of the swing block. Both sides of the bidirectional lead screw are threaded with internal threaded rings.

[0010] In a preferred embodiment, several connecting rods are fixedly connected to the outer ends of the two inner rings that are away from each other, and the other ends of the connecting rods on the same side are fixedly connected to the same locking block. The other ends of the two locking blocks respectively pass through the two ends of the swing block.

[0011] In a preferred embodiment, the two locking blocks are engaged with the same friction pad at one end outside the swing block, with their tops tightly fitting the bottom of the swing block. An external gear is fixedly connected to the middle end of the outer side of the bidirectional lead screw, and a side gear is rotatably connected to the outer side of the swing block, which meshes with the external gear at a right angle.

[0012] In a preferred embodiment, the detection box has a hinged cover on the side away from the drive assembly, and a display control screen is fixedly connected to the top of the detection box, which is electrically connected to the angle detector.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model, by setting up a detection box, a drive assembly, and an angle detector, allows the detection box to provide a sealed space for the detection work, avoiding external interference. The drive rod and the telescopic rod at one end of the electric cylinder can cooperate with the locking hole to drive the swing rod. With the addition of the angle detector, the rotation angle of the rotating shaft and the swing rod can be detected and displayed on the display control screen. This allows the device to automatically complete the detection and judgment without manual intervention, ensuring the detection accuracy of the device.

[0014] This invention, by setting up a detection component, enables the cooperation of the external gear and the side gear to drive the bidirectional lead screw to rotate, and through the internal screw ring and connecting rod, drives the two side blocks to move synchronously in opposite directions, realizing the quick disassembly and assembly of the friction pad, facilitating the replacement of the friction pad, avoiding excessive wear due to continuous operation, and further improving the service life and detection accuracy of the device. Attached Figure Description

[0015] Figure 1 A first-view three-dimensional structural diagram of an asphalt pavement skid resistance testing device; Figure 2 This is a second-view three-dimensional structural diagram of an asphalt pavement skid resistance testing device. Figure 3 This is a cross-sectional three-dimensional structural diagram of the detection box; Figure 4 This is a schematic diagram of the three-dimensional structure of the detection component.

[0016] In the diagram: 1. Detection box; 2. Top frame; 3. Rotating shaft; 4. Swing rod; 5. Swing block; 6. Two-way lead screw; 7. External gear; 8. Internal threaded ring; 9. Connecting rod; 10. Clamping block; 11. Friction pad; 12. Swing groove; 13. Slider; 14. Electric cylinder; 15. Clamping hole; 16. Drive rod; 17. Baffle; 18. Angle detector; 19. Display control panel; 20. Movable cover. Detailed Implementation

[0017] The present invention will be further described below with reference to the embodiments.

[0018] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention; the conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the concept of the present invention are all within the scope of protection claimed by the present invention.

[0019] Please see Figures 1-4 This utility model provides a device for testing the skid resistance of asphalt pavement, including a test box 1. A top frame 2 is fixedly connected to the top of the inner side of the test box 1. A rotating shaft 3 is rotatably connected between the top frame 2 and the test box 1. A swing rod 4 is fixedly connected to the bottom of the rotating shaft 3. A testing component for testing the skid resistance of asphalt pavement is fixedly connected to the bottom of the swing rod 4. The testing component includes a swing block 5 fixedly connected to the bottom of the swing rod 4. A bidirectional lead screw 6 is rotatably connected to the inner side of the swing block 5. Both sides of the bidirectional lead screw 6 are threaded with internal threaded rings 8. The outer ends of the two internal threaded rings 8 that are away from each other are... Several connecting rods 9 are fixedly connected. The other end of the connecting rod 9 on the same side is fixedly connected to the same locking block 10. The other ends of the two locking blocks 10 pass through the two ends of the swing block 5 respectively. The two locking blocks 10 are locked to the same friction pad 11 at the ends outside the swing block 5. The top of the pad is tightly fitted to the bottom of the swing block 5. The middle end of the outer side of the bidirectional lead screw 6 is fixedly connected to an external gear 7. The outer side of the swing block 5 is rotatably connected to a side gear, which meshes with the external gear 7 at a right angle. The detection box 1 is hinged to a movable cover 20 on the side away from the drive component. The side gear and the external gear 7 are bevel gears.

[0020] Open the movable cover 20, place the friction pad 11 on the bottom of the swing block 5, manually rotate the side gear, and drive the double-acting screw 6 to rotate through the external gear 7, so that the inner threaded rings 8 on both sides move outward. Through the connecting rod 9, push the two locking blocks 10 away from each other from the inside of the swing block 5 and pass through the two ends of the friction pad 11. Fix the friction pad 11, close the movable cover 20. The inner threaded ring 8 and the double-acting screw 6 have a threaded self-locking property, which can ensure the stability of the side gear and the external gear 7.

[0021] The engagement of the external gear 7 and the side gear drives the bidirectional lead screw 6 to rotate. This rotation is transmitted to the connecting rod 9 through the internal threaded ring 8, which in turn drives the two side locking blocks 10 to move synchronously in opposite directions and slide inside the friction pad 11. This design allows the friction pad 11 to be quickly disassembled and installed, greatly improving the efficiency of replacing the friction pad 11. This allows operators to replace worn friction pads 11 in a timely manner, avoiding a decrease in detection accuracy due to excessive wear of the friction pad 11. This design not only improves the service life of the device but also ensures the accuracy and reliability of the test results, providing a strong guarantee for the accurate evaluation of the anti-skid performance of asphalt pavement.

[0022] Please see Figures 1-4 An angle detector 18 is fixedly connected to one side of the top frame 2 on the rotating shaft 3. A drive assembly is rotatably connected to one side of the detection box 1. A locking hole 15 is opened at the bottom end of the swing rod 4. The bottom end of the drive assembly passes through the inside of the detection box 1 and extends into the inside of the locking hole 15. The drive assembly includes a drive rod 16 rotatably connected to the outside of the detection box 1. A slider 13 is fixedly connected to the bottom end of the drive rod 16. A swing groove 12 adapted to the slider 13 is opened inside the detection box 1. Both sides of the slider 13 are fixedly connected with a shape adapted to the swing. The baffle 17 of the slot 12 is fixedly connected to the outside of the detection box 1. A forward and reverse motor is fixedly connected to the output end of the motor and the top of the drive rod 16. The slider 13 is slidably connected to the inside of the swing slot 12. An electric cylinder 14 is fixedly connected to the inside of the slider 13. An electric cylinder 14 is fixedly connected inside the electric cylinder 14. A telescopic block adapted to the card hole 15 is fixedly connected to one end of the electric cylinder 14 located inside the detection box 1. It is slidably connected to the inside of the card hole 15. A display control screen 19 is fixedly connected to the top of the detection box 1. It is electrically connected to the angle detector 18.

[0023] The test box 1 is placed on the asphalt road surface to be tested. The drive rod 16 is rotated by the forward and reverse motors, and the slider 13 slides in the swing groove 12. The swing rod 4 is swung to the appropriate position by the telescopic block. The electric cylinder 14 is activated, so that the telescopic block moves out of the locking hole 15. The swing rod 4 and the swing block 5 rotate and fall due to gravity. They rub against the road surface through the friction pad 11. Then the swing rod 4 continues to rotate away from the swing groove 12. The rotation angle of the swing rod 4 and the rotating shaft 3 is detected by the angle detector 18. The data is then transmitted to the display control screen 19, which analyzes the data and displays the friction coefficient of the road surface.

[0024] The detection box 1 provides a sealed, independent space for the entire detection process. This design not only effectively isolates the detection process from external environmental factors but also avoids the potential impact of human factors on the detection results, thereby ensuring the stability and consistency of the detection environment. During the swing of the swing rod 4, the angle detector 18 can monitor the rotation angle of the rotating shaft 3 in real time and accurately, and transmit the data to the display control screen 19. The display control screen 19 analyzes and processes the collected data in real time and displays it to the operator in an intuitive numerical, chart, or image format, enabling the device to complete the detection and judgment process completely automatically without human intervention. This not only greatly improves detection efficiency and saves labor costs but also effectively avoids the subjective impact of human factors on the detection results, further ensuring the stability and reliability of the detection accuracy.

[0025] The working principle and usage process of this utility model are as follows: Open the movable cover 20, put the friction pad 11 on the bottom of the swing block 5, manually rotate the side gear, drive the double-acting screw 6 to rotate through the external gear 7, so that the inner screw rings 8 on both sides move outward, and push the two locking blocks 10 away from each other through the connecting rod 9 to move from the inside of the swing block 5 through the two ends of the friction pad 11, fix the friction pad 11, close the movable cover 20, place the test box 1 on the asphalt road surface to be tested, drive the drive rod 16 to rotate through the forward and reverse motor, slide the slider 13 in the swing groove 12, drive the swing rod 4 to swing to the appropriate position through the telescopic block, start the electric cylinder 14, so that the telescopic block moves out of the locking hole 15, the swing rod 4 and the swing block 5 rotate and fall under the influence of gravity, and rub against the road surface through the friction pad 11. Then the swing rod 4 continues to rotate away from the swing groove 12. The rotation angle of the swing rod 4 and the rotating shaft 3 is detected by the angle detector 18, and the data is transmitted to the display control screen 19, which analyzes the data and displays the friction coefficient of the road surface.

[0026] The angle detector 18 and the display control screen 19 described above are existing technologies disclosed in this utility model. The specific structure, electrical connection method (or circuit components) and detection principle of the angle detector 18 and the display control screen 19 are also existing disclosed technical means, and will not be described in detail here.

[0027] 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 of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for testing the skid resistance of asphalt pavement, comprising a testing box (1), characterized in that, A top frame (2) is fixedly connected to the top of the inner side of the test box (1). A rotating shaft (3) is rotatably connected between the top frame (2) and the test box (1). A swing rod (4) is fixedly connected to the bottom of the rotating shaft (3). A test component for anti-skid testing of asphalt pavement is fixedly connected to the bottom of the swing rod (4). An angle detector (18) is fixedly connected to the outside of the top frame (2) on one side of the rotating shaft (3). A drive component is rotatably connected to one side of the test box (1). A card hole (15) is opened at the bottom of the swing rod (4). The bottom of the drive component penetrates into the inner side of the test box (1) and extends into the inner side of the card hole (15).

2. The asphalt pavement skid resistance testing device according to claim 1, characterized in that, The driving assembly includes a driving rod (16) rotatably connected to the outside of the detection box (1). A slider (13) is fixedly connected to the bottom end of the driving rod (16). The detection box (1) has an oscillating groove (12) adapted to the slider (13) inside. Both sides of the slider (13) are fixedly connected to baffles (17) with shapes adapted to the oscillating groove (12). A forward and reverse motor is fixedly connected to the outside of the detection box (1), and its output end is fixedly connected to the top end of the driving rod (16).

3. The asphalt pavement skid resistance testing device according to claim 2, characterized in that, The slider (13) is slidably connected to the inside of the swing groove (12). An electric cylinder (14) is fixedly connected to the inside of the slider (13). An electric cylinder (14) is fixedly connected inside the electric cylinder (14). One end of the electric cylinder (14) located inside the detection box (1) is fixedly connected to a telescopic block adapted to the card hole (15), which is slidably connected to the inside of the card hole (15).

4. The asphalt pavement skid resistance testing device according to claim 1, characterized in that, The detection assembly includes a swing block (5) fixedly connected to the bottom of the swing rod (4), and a bidirectional lead screw (6) is rotatably connected to the inner side of the swing block (5). Both sides of the bidirectional lead screw (6) are threaded with internal threaded rings (8).

5. The asphalt pavement skid resistance testing device according to claim 4, characterized in that, Two inner rings (8) are fixedly connected to a number of connecting rods (9) on the outer side away from each other. The other end of the connecting rods (9) on the same side is fixedly connected to the same locking block (10). The other ends of the two locking blocks (10) pass through the two ends of the swing block (5).

6. The asphalt pavement skid resistance testing device according to claim 5, characterized in that, The two locking blocks (10) are locked to the same friction pad (11) at one end outside the swing block (5), and their tops are tightly fitted to the bottom of the swing block (5). The middle end of the outer side of the bidirectional screw (6) is fixedly connected to an external gear (7), and the outer side of the swing block (5) is rotatably connected to a side gear, which meshes with the external gear (7) at a right angle.

7. The asphalt pavement skid resistance testing device according to claim 1, characterized in that, The detection box (1) has a hinged cover (20) on the side away from the drive component, and a display control screen (19) is fixedly connected to the top of the detection box (1), which is electrically connected to the angle detector (18).

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