Asphalt pavement skid resistance detection equipment

Abstract

The utility model relates to the technical field of road detection, in particular to asphalt pavement anti-skid performance detection equipment which comprises a supporting frame, supporting legs are installed at the four corners of the bottom of the supporting frame, according to the asphalt pavement anti-skid performance detection equipment, after a driving motor is started, an output shaft drives a cleaning brush to rotate; a fan is started to blow away dust when a cleaning brush rotates for cleaning, the situation that a large amount of dust adheres to the road surface and influences a detection result is avoided, water in a water storage tank is pumped out through a water conveying pipe and sprayed to the road surface through multiple sets of nozzles, and then the wet state of the road surface can be simulated; a high-temperature state can be simulated by heating the ground through a heating plate, so that various forms of the pavement can be detected conveniently, a servo motor is started to drive a threaded rod to rotate, and a nozzle and the heating plate are driven to move transversely through a movable block, so that the detection range can be expanded, the pavement is sprayed or heated more uniformly, the detection accuracy is improved, and the operation is convenient.

Description

Technical Field

[0001] This application relates to the technical field of highway testing, and in particular to a device for testing the skid resistance of asphalt pavement. Background Technology

[0002] Road skid resistance refers to the ability of a road surface to prevent vehicles from sliding under specific weather conditions. It refers to the magnitude of the friction between the road surface and the vehicle tires when sliding occurs. To assess the quality of road skid resistance, skid resistance testing equipment is required.

[0003] A multifunctional asphalt pavement skid resistance testing device, disclosed on the Chinese Patent Network (publication number CN211576910U), includes an adjusting screw threadedly connected to a housing and rotatably connected at its lower end to a movable frame. A tension gauge is mounted on the housing, with its lower end connected to the movable frame via a detection terminal. A drive shaft is horizontally rotatably mounted within the movable frame, a lever is fixedly mounted on the side of the drive shaft, a contact sensor is fixedly connected to the movable frame, and the lever can contact the contact sensor. A motor is mounted within the movable frame, and a drive shaft is fixedly connected to the motor's power output end. A roller is coaxially mounted on the drive shaft, and a rubber tire is fitted around the outer circumference of the roller. This multifunctional asphalt pavement skid resistance testing device facilitates the classification and testing of asphalt pavement skid resistance for vehicles of different weights, making the test data closer to actual conditions.

[0004] The solution also has the following problems: it is inconvenient to clean the dust on the road surface during the test, and it cannot be adjusted between dry and wet test modes during use, thus having certain drawbacks.

[0005] Therefore, in order to solve the above problems, this application provides a device for testing the anti-skid performance of asphalt pavement. Utility Model Content

[0006] The purpose of this invention is to provide a device for testing the skid resistance of asphalt pavement, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an asphalt pavement skid resistance testing device, comprising a support frame, support legs installed at the four corners of the bottom of the support frame, lockable casters installed at the bottom of each support leg, a first electric telescopic rod installed at one bottom end of the support frame, a movable frame installed on the movable end of the bottom of the first electric telescopic rod, a cleaning brush installed on the inner side wall of the movable frame, a water tank installed at the center of the bottom of the support frame, support columns symmetrically installed at both ends of the bottom of the water tank, a fixed frame installed at the bottom of the support columns, a threaded rod installed between the inner side walls of the fixed frame, a movable block installed on the outer ring surface of the threaded rod, a fixed plate installed at the bottom of the movable block, a heating plate installed at the center of the bottom of the fixed plate, several sets of nozzles installed in a circular array along the bottom edge of the fixed plate, a second electric telescopic rod installed at the bottom end of the support frame away from the first electric telescopic rod, a testing frame installed on the movable end of the bottom of the second electric telescopic rod, and testing wheels installed at the bottom of the testing frame.

[0008] Preferably, support plates are installed at the bottom of the support frame and on both sides of the movable frame and the testing frame. Slide grooves are provided on the outer surfaces of the support plates. Cylindrical blocks are installed at both ends of the movable frame and the testing frame and inside the corresponding slide grooves.

[0009] Preferably, a drive motor is mounted on the outer side of one of the support plates, away from the cleaning brush, and the output shaft of the drive motor passes through the support plate and is connected to the cleaning brush.

[0010] Preferably, a column is installed at the bottom of the support frame and near the movable frame, and a fan is installed at the bottom of the column, the fan being tilted toward the cleaning brush.

[0011] Preferably, a water supply pipe is installed at one end of the water storage tank, one end of which extends into the interior of the water storage tank and is connected to the water pump inside. The end of the water supply pipe away from the water storage tank passes through the fixed plate and is connected to multiple sets of nozzles. A servo motor is installed at one end of the fixed frame, and the output shaft of the servo motor passes through the fixed frame and is connected to one end of the threaded rod. The outer ring surface of the threaded rod is threadedly connected to the movable block.

[0012] Preferably, a push rod is installed at one outer end of the support frame, and a detector is installed at the top of the support frame.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] This asphalt pavement skid resistance testing equipment uses a drive motor to start, which in turn drives a cleaning brush to rotate. This, combined with the lifting and lowering of a movable frame, achieves efficient cleaning of the pavement. While the cleaning brush rotates, a fan blows away dust, preventing dust from adhering to the pavement and affecting test results. Water from a storage tank is pumped through a water pipe and sprayed onto the pavement from multiple nozzles to simulate a wet condition. A heating plate can simulate a high-temperature condition, facilitating testing of various pavement conditions. A servo motor drives a threaded rod to rotate, which in turn moves the nozzles and heating plate laterally via a movable block, expanding the testing range and ensuring more uniform spraying or heating, thus improving testing accuracy and ease of operation. Attached Figure Description

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

[0016] Figure 2 This is a utility model Figure 1 Schematic diagram on the left side of the structure;

[0017] Figure 3 This is a utility model Figure 1 Partial structural diagram;

[0018] Figure 4 This is a utility model Figure 3 Partial structural diagram.

[0019] Explanation of reference numerals in the attached drawings: 1. Support frame; 2. Support leg; 3. Lockable caster wheel; 4. First electric telescopic rod; 5. Movable frame; 6. Cleaning brush; 601. Drive motor; 7. Water tank; 8. Support column; 9. Fixed frame; 10. Threaded rod; 11. Movable block; 12. Fixed plate; 13. Heating plate; 14. Nozzle; 15. Second electric telescopic rod; 16. Detection frame; 17. Detection wheel; 18. Support plate; 1801. Slide groove; 19. Cylindrical block; 20. Column; 21. Fan; 22. Water pipe; 23. Servo motor; 24. Push rod; 25. Detector. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1 - Figure 4 This application will be described in further detail.

[0021] A device for testing the skid resistance of asphalt pavement, referring to Figure 1 - Figure 4The system includes a support frame 1, with support legs 2 installed at each of the four corners of the bottom of the support frame 1. Each support leg 2 has a lockable caster wheel 3 installed at its bottom. A first electric telescopic rod 4 is installed at one end of the bottom of the support frame 1. A movable frame 5 is installed on the movable end of the bottom of the first electric telescopic rod 4. A cleaning brush 6 is installed on the inner wall of the movable frame 5. A water tank 7 is installed at the center of the bottom of the support frame 1. Support columns 8 are symmetrically installed at both ends of the bottom of the water tank 7. A fixing frame 9 is installed at the bottom of all the support columns 8. The inner wall of the fixing frame 9... A threaded rod 10 is installed between the walls. A movable block 11 is installed on the outer ring surface of the threaded rod 10. A fixed plate 12 is installed at the bottom of the movable block 11. A heating plate 13 is installed at the center of the bottom of the fixed plate 12. Several sets of nozzles 14 are installed in a ring array at the bottom edge of the fixed plate 12. A second electric telescopic rod 15 is installed at the bottom of the support frame 1 away from the first electric telescopic rod 4. A detection frame 16 is installed on the movable end of the bottom of the second electric telescopic rod 15. A detection wheel 17 is installed at the bottom of the detection frame 16.

[0022] Reference Figure 1 - Figure 3 Support plates 18 are installed at the bottom of the support frame 1 and on both sides of the movable frame 5 and the detection frame 16. Slide grooves 1801 are opened on the outer surface of the support plates 18. Cylindrical blocks 19 are installed at both ends of the movable frame 5 and the detection frame 16 and inside the corresponding slide grooves 1801. When the first electric telescopic rod 4 and the second electric telescopic rod 15 extend and retract, the cylindrical blocks 19 slide in the slide grooves 1801 to ensure that the movable frame 5 and the detection frame 16 rise and fall vertically and smoothly, and to prevent deviation or jamming.

[0023] Reference Figure 3 A drive motor 601 is installed on the outer side of one of the support plates 18, away from the cleaning brush 6. The output shaft of the drive motor 601 passes through the support plate 18 and is connected to the cleaning brush 6. After the drive motor 601 is started, the output shaft drives the cleaning brush 6 to rotate. With the lifting and lowering of the movable frame 5, the road surface is cleaned efficiently. A column 20 is installed at the bottom of the support frame 1 and close to the movable frame 5. A fan 21 is installed at the bottom of the column 20. The fan 21 is set to be tilted towards the cleaning brush 6. When the cleaning brush 6 rotates to clean, the fan 21 is activated to blow away the dust and prevent a large amount of dust from sticking to the road surface from affecting the test results.

[0024] Reference Figure 1 - Figure 4A water supply pipe 22 is installed on one end of the water storage tank 7. One end of the water supply pipe 22 extends into the water storage tank 7 and is connected to the water pump inside. The end of the water supply pipe 22 away from the water storage tank 7 passes through the fixed plate 12 and is connected to multiple sets of nozzles 14. A servo motor 23 is installed on one end of the fixed frame 9. The output shaft of the servo motor 23 passes through the fixed frame 9 and is connected to one end of the threaded rod 10. The outer ring surface of the threaded rod 10 is threadedly connected to the movable block 11. Water is drawn out from the water storage tank 7 through the water supply pipe 22 and sprayed onto the road surface by multiple sets of nozzles 14 to simulate a wet road surface. The heating plate 13 heats the ground to simulate a high temperature, which facilitates the detection of various road surface conditions. The servo motor 23 drives the threaded rod 10 to rotate, and the movable block 11 drives the nozzles 14 and the heating plate 13 to move laterally, which expands the detection range, makes the road surface sprayed or heated more evenly, and improves the accuracy of the detection.

[0025] Reference Figure 2 A push rod 24 is installed at one end of the support frame 1, and a detector 25 is installed on the top of the support frame 1. The operator pushes the equipment to the detection position by pushing the push rod 24. When the detection wheel 17 starts detection, the detector 25 collects friction data in real time and stores or transmits it to external equipment for subsequent analysis.

[0026] The implementation principle of the asphalt pavement skid resistance testing device in this application embodiment is as follows: When using the device, after the drive motor 601 starts, the output shaft drives the cleaning brush 6 to rotate, which, together with the lifting and lowering of the movable frame 5, achieves efficient cleaning of the road surface. When the cleaning brush 6 rotates and cleans, the fan 21 is activated to blow away the dust, preventing a large amount of dust adhering to the road surface from affecting the test results. When the first electric telescopic rod 4 and the second electric telescopic rod 15 extend and retract, the cylindrical block 19 slides in the slide groove 1801, ensuring that the movable frame 5 and the testing frame 16 rise and fall vertically and smoothly, preventing deviation or jamming. Water is drawn from the water tank 7 through the water supply pipe 22 and sprayed onto the road surface by multiple sets of nozzles 14, which can simulate the wet state of the road surface. Heating plate 13 can simulate high temperature conditions by heating the ground, which facilitates the detection of various road surface conditions. The servo motor 23 drives the threaded rod 10 to rotate, and the movable block 11 drives the nozzle 14 and heating plate 13 to move laterally, which can expand the detection range, make the road surface spraying or heating more uniform, and improve the accuracy of detection. The second electric telescopic rod 15 extends and drives the detection frame 16 to descend and pass through the detection wheel 17 to detect the sprayed or heated area. The operator pushes the equipment to the detection position by pushing rod 24. When the detection wheel 17 starts detection, the detector 25 collects friction force data in real time and stores or transmits it to external equipment for subsequent analysis. The operation is convenient.

[0027] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0028] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0029] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0030] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An asphalt pavement skid resistance testing device, comprising a support frame (1), characterized in that: Support legs (2) are installed at the four corners of the bottom of the support frame (1). Lockable casters (3) are installed at the bottom of each support leg (2). A first electric telescopic rod (4) is installed at one end of the bottom of the support frame (1). A movable frame (5) is installed on the movable end of the bottom of the first electric telescopic rod (4). A cleaning brush (6) is installed on the inner wall of the movable frame (5). A water tank (7) is installed at the center of the bottom of the support frame (1). Support columns (8) are symmetrically installed at both ends of the bottom of the water tank (7). A fixing frame (9) is installed at the bottom of the support columns (8). The inner wall of the fixing frame (9) A threaded rod (10) is installed between the two sides. A movable block (11) is installed on the outer ring surface of the threaded rod (10). A fixed plate (12) is installed at the bottom of the movable block (11). A heating plate (13) is installed at the center of the bottom of the fixed plate (12). Several sets of nozzles (14) are installed in a ring array at the bottom edge of the fixed plate (12). A second electric telescopic rod (15) is installed at the bottom of the support frame (1) away from the first electric telescopic rod (4). A detection frame (16) is installed on the movable end of the bottom of the second electric telescopic rod (15). A detection wheel (17) is installed at the bottom of the detection frame (16).

2. The asphalt pavement skid resistance testing equipment according to claim 1, characterized in that: Support plates (18) are installed at the bottom of the support frame (1) and on both sides of the movable frame (5) and the detection frame (16). Slide grooves (1801) are provided on the outer side of the support plates (18). Cylindrical blocks (19) are installed at both ends of the movable frame (5) and the detection frame (16) and inside the corresponding slide grooves (1801).

3. The asphalt pavement skid resistance testing equipment according to claim 2, characterized in that: A drive motor (601) is mounted on the outer side of one of the support plates (18) and away from the cleaning brush (6). The output shaft of the drive motor (601) passes through the support plate (18) and is connected to the cleaning brush (6).

4. The asphalt pavement skid resistance testing equipment according to claim 1, characterized in that: A column (20) is installed at the bottom of the support frame (1) and near the movable frame (5), and a fan (21) is installed at the bottom of the column (20), the fan (21) being tilted toward the cleaning brush (6).

5. The asphalt pavement skid resistance testing equipment according to claim 1, characterized in that: A water supply pipe (22) is installed on one end of the water storage tank (7). One end of the water supply pipe (22) extends into the water storage tank (7) and is connected to the water pump inside it. The end of the water supply pipe (22) away from the water storage tank (7) passes through the fixed plate (12) and is connected to multiple sets of nozzles (14). A servo motor (23) is installed on one end of the fixed frame (9). The output shaft of the servo motor (23) passes through the fixed frame (9) and is connected to one end of the threaded rod (10). The outer ring surface of the threaded rod (10) is threadedly connected to the movable block (11).

6. The asphalt pavement skid resistance testing equipment according to claim 1, characterized in that: A push rod (24) is installed at one end of the support frame (1), and a detector (25) is installed on the top of the support frame (1).

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