Equipment for improving skid resistance of road surface

Abstract

The equipment comprises a vehicle body, a vehicle hopper is fixedly installed at the front end of the vehicle body, a material box used for storing anti-skid materials is placed in the vehicle hopper, supports are fixedly installed on the two sides of the vehicle hopper, transversely-arranged material guiding pipes are fixedly installed on the supports, and dispersing mechanisms are installed in the material guiding pipes; and the dispersing mechanism is arranged below the material guide pipe and used for uniformly dispersing the anti-sliding materials in the material guide pipe in the material guide pipe, the blocking mechanism is arranged below the material guide pipe and used for intermittently blocking the strip-shaped opening, and the blocking mechanism is matched with the dispersing mechanism to enable the material box to vibrate and enable the discharging process of the anti-sliding materials to be smoother. The dispersing mechanism drives conveying screw rods on the two sides to rotate synchronously through a servo motor, so that the anti-sliding materials entering the material guide pipe move towards the two sides and are evenly dispersed in the material guide pipe, a foundation is laid for follow-up even material scattering, it is ensured that the anti-sliding materials can act on the road surface more evenly, and the overall consistency of the anti-sliding performance of the road surface is improved.

Description

Technical Field

[0001] This invention relates to the field of road construction equipment technology, and more specifically to a device for improving the anti-skid performance of road surfaces. Background Technology

[0002] In the field of road maintenance and construction, the anti-skid performance of road surfaces is crucial for ensuring driving safety. Especially in rainy or snowy weather, or when the road surface is severely worn, its anti-skid ability decreases significantly, easily leading to traffic accidents such as vehicle skidding and loss of control. One common method to improve the anti-skid performance of road surfaces is to spread anti-skid materials, such as gravel or anti-skid granules, on the road surface.

[0003] However, existing road anti-skid material spreading equipment has many problems in practical use. On the one hand, some equipment struggles to achieve uniform dispersion of the anti-skid material, resulting in uneven distribution on the road surface. Some areas have excessive material accumulation, leading to waste and potentially affecting road smoothness; while other areas have insufficient material, failing to effectively improve the road's anti-skid performance. On the other hand, some equipment is prone to clogging in the material bins or conveying pipes during spreading, especially when the material has high moisture content or uneven particle size. This clogging problem is more severe, affecting the continuity of spreading work, reducing efficiency, and potentially requiring frequent cleaning and maintenance, increasing operating costs. To address these issues, we propose a device for improving the anti-skid performance of road surfaces. Summary of the Invention

[0004] Therefore, the present invention provides a device for improving the anti-skid performance of road surfaces, in order to solve the problem that the existing anti-skid material spreading equipment cannot evenly disperse the anti-skid material on the road surface, resulting in excessive material accumulation in some areas of the road surface, causing material waste, while other areas have too little material, which cannot effectively improve the anti-skid performance of the road surface.

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

[0006] A device for improving the anti-skid performance of road surfaces includes a vehicle body with a bucket fixedly installed at the front end. The bucket has an opening at its bottom, and a hopper for storing anti-skid materials is placed inside the bucket. The bottom of the hopper is funnel-shaped and open. Supports are fixedly installed on both sides of the bucket, and horizontally placed guide pipes are fixedly installed on the supports. A through-hole communicating with the lower end of the hopper is opened at the center of the top of the guide pipe, and a strip-shaped opening is opened at the bottom of the guide pipe, communicating with the inner cavity of the guide pipe. A dispersing mechanism is installed inside the guide pipe to evenly disperse the anti-skid material within the guide pipe. A sealing mechanism is provided below the guide pipe to intermittently seal the strip-shaped opening. The sealing mechanism, in conjunction with the dispersing mechanism, causes the hopper to vibrate and facilitates the smooth discharge of the anti-skid material.

[0007] Preferably, the dispersing mechanism includes a support portion fixedly installed in the center of the feed tube, with conveying screws rotatably installed on both sides of the support portion inside the feed tube. The two conveying screws are connected by a connecting shaft, and the conveying screws on both sides are symmetrically distributed. A servo motor is fixedly installed on the bracket, and the output shaft of the servo motor is fixedly connected to the conveying screw on one side, so that the conveying screws on both sides can rotate synchronously through the servo motor.

[0008] Preferably, the sealing mechanism includes two spaced-apart slides, which are arc-shaped and located inside the support. A sealing plate is provided below the strip-shaped opening. The sealing plate is arc-shaped and fits against the outer surface of the guide tube. A discharge port is provided through the sealing plate and is strip-shaped and connected to the strip opening. Slider blocks are fixedly installed on both ends of the sealing plate and are slidably installed in the slides. The servo motor is a dual-axis motor, and a friction wheel is fixedly installed on the other output shaft of the servo motor. The friction wheel contacts the inner surface of the sealing plate, and the two are transmitted through friction.

[0009] Preferably, an annular plate is fixedly installed on the bracket on one side, and a notch is opened on the inner side of the annular plate. A side shaft is rotatably installed on the guide pipe. The side shaft is fixedly connected to the conveying screw on one side. An elastic telescopic rod is installed at the end of the side shaft. The elastic telescopic rod is located inside the annular plate. The movable end of the elastic telescopic rod is set as an inclined surface. The elastic telescopic rod rotates around the side shaft and is squeezed by the inner wall of the annular plate. When the notch is reset, it impacts the annular plate through the movable end of the elastic telescopic rod.

[0010] Preferably, the lower end of the material box has arc-shaped surfaces on both sides, and the arc-shaped surfaces on both sides are symmetrically distributed. The lower end of the material box has a filter plate, the end of the filter plate extends to the arc-shaped surface and fits against the arc-shaped surface. A rotating shaft is fixedly installed on the filter plate, and the rotating shaft is rotatably installed on the material box and extends outside the material box.

[0011] Preferably, a driven wheel is fixedly installed at the end of the rotating shaft, elastic plates are fixedly installed on both sides of the rotating shaft, the other end of the elastic plate is fixedly connected to the material box, a stepper motor is fixedly installed outside the material box, and an incomplete gear is fixedly installed at the output shaft end of the stepper motor, the incomplete gear intermittently meshing with the driven wheel.

[0012] Preferably, the stepper motor is electrically connected to a controller mounted on the vehicle body, and the stepper motor is controlled to operate by the controller.

[0013] Preferably, the lower end of the material box has a block inside, the block is configured as a triangular pyramid, and there are gaps between the two ends of the block and the side wall of the material box for material discharge.

[0014] Preferably, the block is detachably connected to the material box by threaded fasteners, and the material box has multiple mounting holes evenly distributed vertically, and the block is installed at different heights by threaded fasteners.

[0015] Preferably, the material bin is provided with material level scale lines.

[0016] The present invention has the following advantages:

[0017] 1. The dispersing mechanism drives the conveying screws on both sides to rotate synchronously through the servo motor, so that the anti-skid material entering the guide pipe moves to both sides and is evenly dispersed in the guide pipe, laying the foundation for subsequent uniform spreading and ensuring that the anti-skid material can act more evenly on the road surface, thus improving the overall consistency of the anti-skid performance of the road surface.

[0018] 2. The sealing mechanism uses a dual-shaft motor in conjunction with a friction wheel to intermittently seal the strip opening. During the opening phase, the discharge port connects with the strip opening, allowing the uniformly dispersed anti-skid material to be discharged and evenly distributed on the road surface. During the sealing phase, it prevents the continuous outflow of anti-skid material, ensuring controllability of material spreading and guaranteeing the uniformity of spreading.

[0019] 3. The dispersing mechanism and the sealing mechanism work together to make the material box vibrate, which effectively avoids problems such as blockage and bridging of anti-slip material in the material box and guide pipe, making the discharge process of anti-slip material smoother and improving the working efficiency and reliability of the equipment.

[0020] 4. The equipment operates in a reciprocating cycle mode. After one discharge cycle, the control system controls the relevant components to return the sealing plate to the sealing position, while the dispersing mechanism continues to work. This cycle repeats continuously, enabling uniform material spreading to meet the needs of large-area road construction and improve construction efficiency. Attached Figure Description

[0021] Figure 1 A schematic diagram of the structure of a device for improving the anti-skid performance of road surfaces provided in an embodiment of the present invention. Figure 1 .

[0022] Figure 2 A schematic diagram of the structure of a device for improving the anti-skid performance of road surfaces provided in an embodiment of the present invention. Figure 2 .

[0023] Figure 3 This is an enlarged schematic diagram of a portion of the structure of the hopper and material box in a device for improving the anti-skid performance of road surfaces, provided in an embodiment of the present invention.

[0024] Figure 4 This is an enlarged schematic diagram of a portion of the structure of the truck bed in a device for improving the anti-skid performance of road surfaces, provided in an embodiment of the present invention.

[0025] Figure 5 An exploded view of the hopper, material box, and guide pipe in a device for improving the anti-skid performance of road surfaces, provided in an embodiment of the present invention;

[0026] Figure 6 This is an enlarged cross-sectional view of a portion of the structure of the material box in a device for improving the anti-skid performance of road surfaces, provided in an embodiment of the present invention.

[0027] Figure 7 This is an enlarged schematic diagram of a portion of the structure of the material guide pipe in a device for improving the anti-skid performance of road surfaces, provided in an embodiment of the present invention. Figure 1 .

[0028] Figure 8 This is an enlarged schematic diagram of a portion of the structure of the material guide pipe in a device for improving the anti-skid performance of road surfaces, provided in an embodiment of the present invention. Figure 2 ;

[0029] Figure 9 This is an enlarged cross-sectional view of a portion of the structure of the conveying screw in a device for improving the anti-skid performance of road surfaces, provided in an embodiment of the present invention.

[0030] Figure 10 This is an enlarged schematic diagram of a portion of the structure of the friction wheel in a device for improving the anti-skid performance of road surfaces, provided in an embodiment of the present invention.

[0031] Figure 11An embodiment of the present invention provides a device for improving the anti-skid performance of road surfaces. Figure 9 Enlarged diagram of point A in the diagram;

[0032] Figure 12 This is an enlarged schematic diagram of a portion of the block structure in a device for improving the anti-skid performance of road surfaces, provided in an embodiment of the present invention.

[0033] In the diagram: 1. Car body; 2. Cargo bucket; 3. Material box; 4. Support; 5. Guide pipe; 6. Guide port; 7. Strip-shaped opening; 8. Support part; 9. Conveying screw; 10. Connecting shaft; 11. Servo motor; 12. Slide rail; 13. Sealing plate; 14. Slider; 15. Friction wheel; 16. Discharge port; 17. Annular plate; 18. Notch; 19. Elastic telescopic rod; 20. Arc-shaped surface; 21. Filter plate; 22. Rotating shaft; 23. Driven wheel; 24. Elastic sheet; 25. Stepper motor; 26. Incomplete gear; 27. Block; 28. Threaded fastener; 29. ​​Mounting hole; 30. Side shaft. Detailed Implementation

[0034] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1

[0036] like Figures 1 to 12 As shown, a device for improving the anti-skid performance of road surfaces includes a vehicle body 1, a bucket 2 fixedly installed at the front end of the vehicle body 1, an opening at the bottom of the bucket 2, a material box 3 for storing anti-skid materials placed inside the bucket 2, the lower end of the material box 3 being funnel-shaped and open at the bottom, supports 4 fixedly installed on both sides of the bucket 2, and a horizontally placed guide pipe 5 fixedly installed on the supports 4, a guide port 6 connected to the lower end of the material box 3 being opened at the center of the top of the guide pipe 5, and a strip-shaped opening 7 being opened at the bottom of the guide pipe 5, the strip-shaped opening 7 being connected to the inner cavity of the guide pipe 5, a dispersing mechanism installed inside the guide pipe 5, the dispersing mechanism being used to evenly disperse the anti-skid materials inside the guide pipe 5, and a sealing mechanism being provided below the guide pipe 5, the sealing mechanism being used to intermittently seal the strip-shaped opening 7, the sealing mechanism cooperating with the dispersing mechanism to cause the material box 3 to vibrate and make the discharge process of the anti-skid materials smoother.

[0037] The dispersing mechanism includes a support part 8 fixedly installed in the center of the inside of the guide tube 5. On both sides of the support part 8, there are conveying screws 9 located in the guide tube 5. The two conveying screws 9 are connected by a connecting shaft 10. The conveying screws 9 on both sides are symmetrically distributed. A servo motor 11 is fixedly installed on the bracket 4. The output shaft of the servo motor 11 is fixedly connected to the conveying screw 9 on one side. The servo motor 11 drives the conveying screws 9 on both sides to rotate synchronously, thereby causing the anti-slip material entering the guide tube 5 to move to both sides.

[0038] The sealing mechanism includes two spaced-apart slides 12, which are arc-shaped and located inside the support 4. A sealing plate 13 is positioned below the strip-shaped opening 7. The sealing plate 13 is arc-shaped and fits against the outer surface of the guide tube 5. A discharge port 16, which extends through the sealing plate 13, is strip-shaped and communicates with the strip-shaped opening 7. Slider blocks 14 are fixedly mounted on both ends of the sealing plate 13, and these sliders 14 slidably install within the slides 12. The servo motor 11 is a dual-axis motor. A friction wheel 15 is fixedly mounted on the other output shaft of the servo motor 11. The friction wheel 15 contacts the inner surface of the sealing plate 13, and power is transmitted between them through friction. The dual-axis motor is designed to rotate on one output shaft while the other remains stationary, achieved through an integrated electromagnetic clutch mounted on one of the output shafts. When the shaft needs to stop, the clutch disengages power transmission. The operation of the dual-axis motor is controlled by its control system.

[0039] The equipment uses a dispersing mechanism to evenly disperse the anti-slip material entering the feed pipe 5, and a blocking mechanism to intermittently block the strip opening 7. The two work together to make the material box 3 vibrate, so that the anti-slip material can be discharged more smoothly and evenly scattered on the road surface. Continuous operation is achieved through reciprocating cycle.

[0040] Working process of the dispersing mechanism: The servo motor 11 starts, driving the conveying screw 9 connected to its output shaft to rotate. Since the two conveying screws 9 are connected by the connecting shaft 10, the conveying screws 9 on both sides will rotate synchronously. The anti-slip material entering the guide tube 5 moves to both sides under the action of the conveying screws 9. After a period of time, the anti-slip material is filled in different positions in the guide tube 5, so that the anti-slip material is relatively evenly distributed in different positions in the guide tube 5.

[0041] Working principle of the sealing mechanism: The servo motor 11 is a dual-axis motor, and a friction wheel 15 is fixedly mounted on the other output shaft. The friction wheel 15 contacts the inner side of the sealing plate 13 and is transmitted through friction. The dual-axis motor achieves the function of one output shaft rotating while the other does not rotate through an integrated electromagnetic clutch. Its operation is controlled by the control system.

[0042] Blocking stage: In the initial state, the blocking plate 13 is in the position of blocking the strip opening 7. At this time, the output shaft of the dual-shaft motor connected to the dispersing mechanism rotates, driving the conveying screw 9 to work, so that the anti-slip material is evenly dispersed in the guide pipe 5; while the output shaft connected to the blocking mechanism does not rotate under the action of the electromagnetic clutch, the friction wheel 15 is stationary, the blocking plate 13 remains stationary, and the strip opening 7 is blocked.

[0043] Opening Phase: When the control system controls the electromagnetic clutch, the output shaft connected to the sealing mechanism begins to rotate, driving the friction wheel 15 to rotate. The friction wheel 15 drives the sealing plate 13 to slide within the slide rail 12 through friction, switching the working state of the sealing plate 13 and connecting the discharge port 16 with the strip port 7.

[0044] As mentioned above, anti-skid material is filled at different locations within the guide pipe 5, thus ensuring a relatively even distribution of the anti-skid material within the guide pipe 5. When the strip-shaped opening 7 connects to the outside through the discharge port 16, the dispersed anti-skid material within the guide pipe 5 is discharged uniformly through the strip-shaped opening 7 and the discharge port 16, thereby ensuring a relatively even distribution of the anti-skid material on the road surface.

[0045] Reciprocating cycle: After one discharge is completed, the control system controls the electromagnetic clutch again to stop the output shaft connected to the blocking mechanism from rotating, and the blocking plate 13 returns to the position of blocking the strip opening 7. At the same time, the dispersing mechanism continues to work, and so on, to achieve continuous and uniform material spreading.

[0046] Example 2

[0047] like Figures 1 to 12 As shown, a device for improving the anti-skid performance of road surfaces includes all the contents of Embodiment 1. In addition, an annular plate 17 is fixedly installed on a support 4 located on one side. A notch 18 is opened on the inner side of the annular plate 17. A side shaft 30 is rotatably installed on the guide pipe 5. The side shaft 30 is fixedly connected to a conveying screw 9 on one side. An elastic telescopic rod 19 is installed at the end of the side shaft 30. The elastic telescopic rod 19 is located inside the annular plate 17. The movable end of the elastic telescopic rod 19 is set as an inclined surface. The elastic telescopic rod 19 rotates around the side shaft 30 and is squeezed by the inner wall of the annular plate 17. When the notch 18 is reset, the elastic telescopic rod 19 impacts the annular plate 17 through its movable end.

[0048] The lower end of the material box 3 has arc-shaped surfaces 20 on both sides, and the arc-shaped surfaces 20 on both sides are symmetrically distributed. The lower end of the material box 3 has a filter plate 21. The end of the filter plate 21 extends to the arc-shaped surface 20 and fits with the arc-shaped surface 20. A rotating shaft 22 is fixedly installed on the filter plate 21. The rotating shaft 22 is rotatably installed on the material box 3 and extends to the outside of the material box 3.

[0049] A driven wheel 23 is fixedly mounted at one end of the rotating shaft 22. Elastic plates 24 are fixedly mounted on both sides of the rotating shaft 22. The other end of the elastic plates 24 is fixedly connected to the material box 3. A stepper motor 25 is fixedly mounted outside the material box 3. An incomplete gear 26 is fixedly mounted on the output shaft end of the stepper motor 25. The incomplete gear 26 intermittently meshes with the driven wheel 23. The stepper motor 25 is electrically connected to a controller mounted on the vehicle body 1, and the controller controls the operation of the stepper motor 25.

[0050] The lower end of the material box 3 has a block 27 inside, which is a triangular pyramid shape. There are gaps between the two ends of the block 27 and the side wall of the material box 3 for material discharge. The block 27 is detachably connected to the material box 3 by threaded fasteners 28. The material box 3 has multiple mounting holes 29 that are equally spaced vertically. The block 27 is installed at different heights by threaded fasteners 28.

[0051] The material bin 3 is equipped with a material level scale. This scale serves as a visual indicator, displaying the height of the anti-slip material within the bin. Operators can quickly and accurately determine the remaining amount of anti-slip material in bin 3 by observing the relative position of the anti-slip material surface to the scale.

[0052] When the conveying screw 9 starts to rotate, it drives the side shaft 30 to rotate synchronously. The elastic telescopic rod 19 installed at the end of the side shaft 30 is located inside the annular plate 17. As the side shaft 30 rotates, the elastic telescopic rod 19 also rotates around the side shaft 30. Since the movable end of the elastic telescopic rod 19 is set as an inclined surface, during the rotation, the inclined surface will contact the inner wall of the annular plate 17. The inner wall of the annular plate 17 applies pressure to the inclined surface of the movable end of the elastic telescopic rod 19, causing the movable end of the elastic telescopic rod 19 to be compressed, and elastic potential energy is generated inside the elastic telescopic rod 19.

[0053] When the elastic telescopic rod 19 rotates to the notch 18 on the inner side of the annular plate 17, the elastic potential energy previously compressed and stored in the elastic telescopic rod 19 is released instantaneously because there is no obstruction from the inner wall of the annular plate 17 at the notch 18, and the movable end quickly returns to its original position. After returning to its original position, the movable end of the elastic telescopic rod 19 will impact the annular plate 17, generating a certain impact force. The vibration can be transmitted to the guide pipe 5, preventing the anti-slip material from clogging in the guide pipe 5 and ensuring that the anti-slip material can be smoothly conveyed.

[0054] The filter plate 21 filters the larger particles in the anti-slip material. When the stepper motor 25 operates, its output shaft drives the incomplete gear 26 to rotate. Since the incomplete gear 26 and the driven wheel 23 mesh intermittently, when the teeth of the incomplete gear 26 mesh with the teeth of the driven wheel 23, the driven wheel 23 rotates at a certain angle. The driven wheel 23 then drives the rotating shaft 22 to rotate, which in turn drives the filter plate 21 to rotate at a certain angle. At this time, the elastic plates 24 installed on both sides of the rotating shaft 22, with their other ends fixed to the material box 3, are stretched or compressed, storing elastic potential energy. When the teeth of the incomplete gear 26 disengage from the teeth of the driven wheel 23, the elastic plates 24 release the stored elastic potential energy, causing the filter plate 21 to rotate in the opposite direction and reset. This process repeats, causing the filter plate 21 to vibrate reciprocatingly. This vibration allows the anti-slip material on the filter plate 21 to pass through the filter plate 21 more effectively for screening, preventing the anti-slip material from clogging the holes of the filter plate 21 and improving screening efficiency.

[0055] When the anti-slip material flows downward in the hopper 3, the triangular pyramidal block 27 can guide the flow direction of the anti-slip material, causing the anti-slip material to be discharged from the gaps at both ends of the block 27, thereby controlling the discharge rate of the anti-slip material and preventing excessive accumulation of anti-slip material at the filter plate 21.

[0056] By installing the threaded fasteners 28 on the mounting holes 29 at different heights, the height position of the block 27 in the hopper 3 can be changed, thereby adjusting the gap size and controlling the discharge rate to suit different discharge requirements.

Claims

1. A device for improving the anti-skid performance of road surfaces, comprising a vehicle body (1), characterized in that, A bucket (2) is fixedly installed at the front end of the vehicle body (1). The bottom of the bucket (2) is open. A material box (3) for storing anti-slip material is placed inside the bucket (2). The bottom of the material box (3) is funnel-shaped and open. A bracket (4) is fixedly installed on both sides of the bucket (2). A horizontal guide pipe (5) is fixedly installed on the bracket (4). A guide port (6) communicating with the lower end of the material box (3) is opened at the center of the top of the guide pipe (5). The bottom of the feed tube (5) is provided with a strip-shaped opening (7), which is connected to the inner cavity of the feed tube (5). A dispersing mechanism is installed inside the feed tube (5). The dispersing mechanism is used to evenly disperse the anti-slip material in the feed tube (5). A sealing mechanism is provided below the feed tube (5). The sealing mechanism is used to intermittently seal the strip-shaped opening (7). The sealing mechanism, together with the dispersing mechanism, causes the material box (3) to vibrate and makes the discharge process of the anti-slip material smoother.

2. The device for improving the anti-skid performance of road surfaces according to claim 1, characterized in that, The dispersing mechanism includes a support part (8) fixedly installed in the center of the feed tube (5). Both sides of the support part (8) are rotatably installed with conveying screws (9) located in the feed tube (5). The two conveying screws (9) are connected by a connecting shaft (10). The conveying screws (9) on both sides are symmetrically distributed. A servo motor (11) is fixedly installed on the bracket (4). The output shaft of the servo motor (11) is fixedly connected to the conveying screw (9) on one side. The servo motor (11) drives the conveying screws (9) on both sides to rotate synchronously.

3. The device for improving the anti-skid performance of road surfaces according to claim 2, characterized in that, The sealing mechanism includes two spaced slides (12), which are arc-shaped and located inside the support (4). A sealing plate (13) is provided below the strip-shaped opening (7). The sealing plate (13) is arc-shaped and fits against the outer surface of the guide tube (5). A discharge port (16) penetrating the sealing plate (13) is provided on the sealing plate (13). The discharge port (16) is strip-shaped and communicates with the strip-shaped opening (7). Slider blocks (14) are fixedly installed on both ends of the sealing plate (13). The sliders (14) are slidably installed in the slides (12). The servo motor (11) is a dual-axis motor. A friction wheel (15) is fixedly installed on the other output shaft of the servo motor (11). The friction wheel (15) contacts the inner side of the sealing plate (13) and the two are transmitted through friction.

4. The device for improving the anti-skid performance of road surfaces according to claim 3, characterized in that, An annular plate (17) is fixedly installed on the bracket (4) on one side. A notch (18) is opened on the inner side of the annular plate (17). A side shaft (30) is rotatably installed on the guide tube (5). The side shaft (30) is fixedly connected to the conveying screw (9) on one side. An elastic telescopic rod (19) is installed at the end of the side shaft (30). The elastic telescopic rod (19) is located inside the annular plate (17). The movable end of the elastic telescopic rod (19) is set as an inclined surface. The elastic telescopic rod (19) rotates around the side shaft (30) and is squeezed by the inner wall of the annular plate (17). It is reset at the notch (18) and impacts the annular plate (17) through the movable end of the elastic telescopic rod (19).

5. The device for improving the anti-skid performance of road surfaces according to claim 1, characterized in that, The lower end of the material box (3) has arc-shaped surfaces (20) on both sides. The arc-shaped surfaces (20) on both sides are symmetrically distributed. The lower end of the material box (3) has a filter plate (21). The end of the filter plate (21) extends to the arc-shaped surface (20) and fits against the arc-shaped surface (20). A rotating shaft (22) is fixedly installed on the filter plate (21). The rotating shaft (22) is rotatably installed on the material box (3) and extends to the outside of the material box (3).

6. The device for improving the anti-skid performance of road surfaces according to claim 5, characterized in that, A driven wheel (23) is fixedly installed at the end of the rotating shaft (22). Elastic plates (24) are fixedly installed on both sides of the rotating shaft (22). The other end of the elastic plate (24) is fixedly connected to the material box (3). A stepper motor (25) is fixedly installed outside the material box (3). An incomplete gear (26) is fixedly installed at the output shaft end of the stepper motor (25). The incomplete gear (26) intermittently meshes with the driven wheel (23).

7. The device for improving the anti-skid performance of road surfaces according to claim 6, characterized in that, The stepper motor (25) is electrically connected to a controller mounted on the vehicle body (1), and the stepper motor (25) is controlled to work by the controller.

8. The device for improving the anti-skid performance of road surfaces according to claim 7, characterized in that, The lower end of the material box (3) is provided with a block (27), which is set in the shape of a triangular pyramid. There are gaps between the two ends of the block (27) and the side wall of the material box (3) for material discharge.

9. The device for improving the anti-skid performance of road surfaces according to claim 8, characterized in that, The block (27) is detachably connected to the hopper (3) by threaded fasteners (28). The hopper (3) has multiple mounting holes (29) that are equally spaced vertically. The block (27) is installed at different heights by threaded fasteners (28).

10. The device for improving the anti-skid performance of road surfaces according to claim 1, characterized in that, The material bin (3) is equipped with a material level scale.

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