Asphalt pavement antiskid performance recovery device

Abstract

An anti-skid performance recovery device for an asphalt pavement relates to the technical field of pavement maintenance equipment and comprises a vehicle body, and an anti-skid performance recovery mechanism is mounted at the bottom of the vehicle body in a liftable manner; the antiskid performance recovery mechanism comprises an isolation cover with a downward opening, a flow dividing pipe is transversely arranged at the top of the isolation cover, a plurality of jet flow nozzles are evenly arranged under the flow dividing pipe at intervals in an array mode, and the spraying direction of the jet flow nozzles vertically faces the opening direction of the isolation cover. By integrating the lifting type anti-skid recovery mechanism and the high-pressure water jet cleaning and negative-pressure slag suction system, rapid recovery of the anti-skid performance of the road surface is effectively achieved, meanwhile, impurities on the road surface are cleaned, the road safety is improved, the structural design is compact, operation is convenient and fast, the maintenance cost is low, and cyclic utilization of resources is achieved.

Description

Technical Field

[0001] This utility model relates to the field of road maintenance equipment technology, specifically to a device for restoring the anti-skid performance of asphalt pavement. Background Technology

[0002] With the continuous improvement of the highway network, my country's road construction has shifted from a stage of rapid expansion to a stage of high-quality development. At present, the construction of roads of all grades in my country is mainly based on asphalt concrete pavement. The flexible structure of asphalt mortar filling the aggregate skeleton greatly improves the overall pavement integrity, improves the smoothness, enhances the shock absorption and noise reduction effect, and provides a driving experience far superior to that of cement pavement.

[0003] The skid resistance of asphalt concrete pavement is a crucial parameter for ensuring driving safety. Its skid resistance primarily stems from the macroscopic and microscopic textures formed by the interlocking of aggregate particles on the pavement surface. During braking, the flexible tires interlock within these textures, generating frictional resistance and thus slowing the vehicle. However, over long-term use, asphalt concrete pavements experience two main issues: firstly, the outlines of the aggregate particles are continuously worn down to a smooth, flat surface, reducing the texture depth; secondly, the liquid nature of asphalt mortar, under the combined effects of long-term axle loads and temperature changes, makes it prone to seeping upwards and filling existing textures. Both of these factors inevitably lead to a continuous reduction in the texture of asphalt concrete pavements during use, causing the pavement surface to become mirror-like, significantly weakening its skid resistance and failing to provide sufficient frictional resistance for braking and steering, ultimately resulting in safety accidents.

[0004] Based on the above mechanisms of skid resistance degradation, there are currently two main measures for restoring the skid resistance of asphalt concrete pavements. The first is to directly add a new overlay, typically 2-4 cm thick; the second is surface treatment, which involves spreading a layer of special binder and small-diameter aggregate particles on the road surface to strengthen its skid resistance. Both of these treatments undoubtedly require significant material costs, and therefore are generally only used on high-grade highways, rarely on low-grade roads where maintenance costs are lower. The industry urgently needs a more economical and widely applicable skid resistance restoration measure. Utility Model Content

[0005] This invention proposes a device for restoring the anti-skid performance of asphalt pavement. It uses high-pressure water jets to sculpt the surface of asphalt concrete pavement, removes excess asphalt slurry, and absorbs and stores it under negative pressure, thereby enhancing the surface texture density and structural depth. This device is cost-effective and helps restore and improve the anti-skid performance of asphalt concrete pavement, extending the service life and maintenance cycle of the pavement.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A device for restoring the anti-skid performance of asphalt pavement includes a vehicle body, wherein an anti-skid performance restoration mechanism is mounted on the bottom of the vehicle body in a liftable manner.

[0008] The anti-slip performance recovery mechanism includes an isolation cover with a downward opening. A diversion pipe is horizontally arranged on the top of the isolation cover. Several jet nozzles are evenly arranged in an array directly below the diversion pipe. The jet nozzles spray in a vertical direction toward the opening of the isolation cover.

[0009] Furthermore, the two sides of the isolation cover are fixedly connected to one end of the main load-bearing frame by anchor bolts, a fixed seat is fixedly connected to the bottom of the vehicle body, the other end of the main load-bearing frame is hinged and rotated with the fixed seat, a lifting cylinder is fixedly connected vertically downward at the bottom of the vehicle body, the output rod of the lifting cylinder is hinged and rotated with one end of the rotating connecting frame, and the other end of the rotating connecting frame is hinged and rotated with the middle of the main load-bearing frame.

[0010] Furthermore, the vehicle body is equipped with a water storage tank and a waste storage tank. The water storage tank is connected to the diversion pipe through a water supply pipe. The side of the isolation cover is connected to one end of the slag suction pipe, and the other end of the slag suction pipe is connected to the waste storage tank.

[0011] Furthermore, the vehicle body is equipped with an ultra-high pressure water pump, which is connected between the water storage tank and the water delivery pipe.

[0012] Furthermore, a negative pressure pump is installed on the vehicle body, and the negative pressure pump is connected between the waste storage tank and the slag suction pipe.

[0013] Furthermore, the waste storage tank is equipped with a sewage gate at its tail end, and the sewage gate is equipped with a rotary valve for opening and closing the gate. The water storage tank is equipped with a water inlet.

[0014] Furthermore, the water storage tank and the waste storage tank are an integrated structure.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This utility model effectively restores the anti-skid performance of the road surface by integrating a lifting anti-skid restoration mechanism, a high-pressure water jet cleaning and negative pressure slag suction system. At the same time, it cleans up road impurities, improves road safety, and has a compact structure, is easy to operate, has low maintenance costs, and realizes the recycling of resources. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a front cross-sectional view of the anti-slip performance restoration mechanism of this utility model;

[0020] Figure 3 This is a side view of the anti-slip performance restoration mechanism of this utility model;

[0021] Figure 4 This is a schematic diagram of the working mechanism for restoring the anti-slip performance of this utility model. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] like Figure 1-4 As shown, an asphalt pavement anti-skid performance restoration device includes a vehicle body 1, and an anti-skid performance restoration mechanism is mounted on the bottom of the vehicle body 1 in a liftable manner.

[0027] The anti-slip performance recovery mechanism includes an isolation cover 91 with a downward opening. A diversion pipe 97 is horizontally arranged on the top of the isolation cover 91. A plurality of jet nozzles 98 are evenly arranged in an array directly below the diversion pipe 97. The jet nozzles 98 spray in a vertical direction toward the opening of the isolation cover 91.

[0028] Specifically, as shown in the figure, the two sides of the isolation cover 91 are fixedly connected to one end of the main load-bearing frame 92 by anchor bolts 96. The bottom of the vehicle body 1 is fixedly connected to a fixed seat 93. The other end of the main load-bearing frame 92 is hinged and rotated with the fixed seat 93. The bottom of the vehicle body 1 is vertically fixedly connected to a lifting cylinder 94. The output rod of the lifting cylinder 94 is hinged and rotated with one end of a rotating connecting frame 95. The other end of the rotating connecting frame 95 is hinged and rotated with the middle of the main load-bearing frame 92.

[0029] The anti-skid performance restoration mechanism is mounted on a fixed base at the bottom of the vehicle body; the main weighing frame is responsible for the overall load-bearing capacity; the hydraulic rod extends and retracts to drive the bidirectional rotating frame to lift and lower, realizing the overall lifting control of the device; the water in the storage tank is pressurized by the ultra-high pressure water pump, and then enters the distribution pipe through the water supply pipe, and then forms an ultra-high pressure jet through the jet nozzle assembly, which is shot towards the road surface to be treated; the isolation cover provides a relatively closed environment, so that the reflected water flow of the ultra-high pressure jet and road cutting debris will not splash and injure people during the operation, and also creates a stronger negative pressure environment inside to ensure the slag suction effect.

[0030] Specifically, as shown in the figure, the vehicle body 1 is equipped with a water storage tank 2 and a waste storage tank 4. The water storage tank 2 is connected to the diversion pipe 97 through a water supply pipe 10. The side of the isolation cover 91 is connected to one end of the slag suction pipe 11, and the other end of the slag suction pipe 11 is connected to the waste storage tank 4.

[0031] Specifically, as shown in the figure, an ultra-high pressure water pump 7 is installed on the vehicle body 1, and the ultra-high pressure water pump 7 is connected between the water storage tank 2 and the water supply pipe 10. The pressurization system mainly includes an ultra-high pressure water pump and a negative pressure pump, each of which is connected to the water storage tank and the waste storage tank by pipes, and then to the anti-skid performance recovery device under the vehicle.

[0032] Specifically, as shown in the figure, a negative pressure pump 8 is installed on the vehicle body 1, and the negative pressure pump 8 is connected between the waste storage tank 4 and the slag suction pipe 11.

[0033] Specifically, as shown in the figure, the waste storage tank 4 is equipped with a sewage gate 5 at its tail end, and a rotary valve 6 for opening and closing the gate is provided on the sewage gate 5. The water storage tank 2 is equipped with a water inlet 3.

[0034] Specifically, as shown in the figure, the water storage tank 2 and the waste storage tank 4 are an integrated structure. The tank body is a two-in-one tank-shaped device, made of stainless steel, with a steel plate welded in the middle dividing the space into two. The tank body thickness is in the range of 5.0~7.0mm to resist the pressure caused by the pressure increase / decrease of the internal space. The front half of the tank is mainly used for water storage, with a water inlet at the top to supplement the water source for the ultra-high pressure jet; the rear half is mainly used for slag storage, with a sewage gate at the tail end for unified unloading of waste after construction.

[0035] The operating procedure of this utility model is as follows:

[0036] 1. Before the operation, the water tank should be filled with water and a test should be conducted on the road surface to be treated. The intensity of the ultra-high pressure jet and the speed of the vehicle should be adjusted according to different road surface types, aggregate rock properties and the degree of deterioration of anti-skid performance, and the actual treatment effect on site shall prevail.

[0037] 2. A sweeper should be placed in front of the equipment vehicle to clear the road and remove large pieces of garbage, debris, stones and other debris from the road surface to be treated, so as not to interfere with the road treatment effect; at the same time, if the road surface to be treated is a highway, a crash barrier vehicle should follow behind the vehicle to ensure the safety of the operation.

[0038] 3. Drive the equipment vehicle into the road to be treated, control the extension of the hydraulic rod to lower the anti-skid performance restoration device to a height of 0.5~1cm above the road surface, and start the negative pressure pump;

[0039] 4. The equipment vehicle moves forward at a constant speed along the lane according to the driving speed and water pressure intensity set in the test section. The jet nozzle group shoots ultra-high pressure jets at the road surface to cut off the excess asphalt mortar and fine aggregate, thereby restoring the anti-skid structure. The cut debris is then sucked into the waste storage tank by the slag suction pipe.

[0040] 5. After the operation is completed, drive the equipment vehicle off the road, turn the rotary valve at the appropriate position to open the sewage gate and clean up the collected debris; at the same time, control the hydraulic rod to retract, raise the anti-slip performance restoration device, rinse and clean the entire device, and apply oil to the jet nozzle for maintenance.

[0041] This utility model proposes an asphalt pavement anti-skid performance restoration device, which is a vehicle-mounted device. It mainly consists of three parts: a pressurization system, a tank, and an anti-skid performance restoration mechanism. Its main principle is to use ultra-high pressure jets, with the jet intensity set as follows: aggregate material strength > jet intensity > asphalt mortar material strength. While the equipment vehicle moves forward at a constant speed, the ultra-high pressure jet group cuts off the excess asphalt mortar and fine aggregates on the road surface, thereby restoring the anti-skid structure.

[0042] 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.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for restoring the skid resistance of asphalt pavement, characterized in that, Includes a vehicle body (1), the bottom of which is equipped with an anti-slip performance recovery mechanism that can be lifted and lowered; The anti-slip performance recovery mechanism includes an isolation cover (91) with a downward opening. A diversion pipe (97) is horizontally arranged on the top of the isolation cover (91). A plurality of jet nozzles (98) are evenly arranged in an array directly below the diversion pipe (97). The jet nozzles (98) spray in a vertical direction toward the opening of the isolation cover (91). The two sides of the isolation cover (91) are fixed to one end of the main load-bearing frame (92) by anchor bolts (96). The bottom of the vehicle body (1) is fixed to a fixed seat (93). The other end of the main load-bearing frame (92) is hinged to the fixed seat (93). The bottom of the vehicle body (1) is vertically fixed to a lifting cylinder (94). The output rod of the lifting cylinder (94) is hinged to one end of the rotating connecting frame (95). The other end of the rotating connecting frame (95) is hinged to the middle of the main load-bearing frame (92). The vehicle body (1) is equipped with a water storage tank (2) and a waste storage tank (4). The water storage tank (2) is connected to the diversion pipe (97) through a water supply pipe (10). The side of the isolation cover (91) is connected to one end of the slag suction pipe (11), and the other end of the slag suction pipe (11) is connected to the waste storage tank (4). An ultra-high pressure water pump (7) is installed on the vehicle body (1), and the ultra-high pressure water pump (7) is connected between the water storage tank (2) and the water supply pipe (10); A negative pressure pump (8) is installed on the vehicle body (1), and the negative pressure pump (8) is connected between the waste storage tank (4) and the slag suction pipe (11).

2. The asphalt pavement skid resistance recovery device according to claim 1, characterized in that, The waste storage tank (4) is equipped with a sewage gate (5) at the tail end, and a rotary valve (6) for opening and closing the gate is provided on the sewage gate (5). The water storage tank (2) is equipped with a water inlet (3).

3. The asphalt pavement skid resistance recovery device according to claim 2, characterized in that, The water storage tank (2) and the waste storage tank (4) are an integrated structure.

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