A road construction paver

Abstract

The utility model relates to road construction equipment technical field discloses a road construction paver, including the vehicle body, the upper surface of vehicle body is fixedly connected with the tank, and the upper surface of vehicle body is located the left side of tank and is provided with conveying mechanism, the upper surface of vehicle body is located the left side of conveying mechanism and is symmetrically fixedly connected with two slide rails in front -back direction, two the inside of slide rail all movably connects with U type board, and the left side lower extreme of two U type boards is rotatably connected with the compression roller between, be provided with the material shoveling mechanism between two U type boards and be located the upside of compression roller, the utility model discloses the cooperation of material shoveling mechanism and ratchet pawl type limiting mechanism makes the scraper board when the compression roller rolls can continuously, effectively scrape off the material that its surface adheres, avoids the problem that the material that the compression roller surface adheres leads to the unevenness of spreading and material waste, and simultaneously, the scraper board is installed through the fixed peg, is convenient for quick disassembly replacement or maintenance after wearing, and the efficiency and forming quality of spreading operation are improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of road construction equipment technology, specifically a road construction paver. Background Technology

[0002] Road pavers are key equipment in the construction of modern high-grade highways, urban roads, airport runways and other infrastructure. Their main function is to spread asphalt mixtures or other road construction materials evenly on the subgrade or base course, and after preliminary compaction, form a road layer with a certain width, thickness, flatness and density. This is the core link to ensure the final construction quality of the road.

[0003] A search revealed that Chinese Patent Publication No. CN206279426U discloses an asphalt pavement hot recycling paver. This utility model achieves the advantages of convenient discharge of asphalt from the storage tank by setting a first motor to drive the mixing rod, and at the same time reducing the hardening of asphalt in the storage tank. By setting a blower to blow air on the recycled asphalt pavement, the heat dissipation efficiency of the asphalt pavement is increased, thereby reducing the time for asphalt roads to be open to traffic. By setting paving rollers on both sides of the blower, the smoothness of the recycled asphalt pavement is increased.

[0004] During use, asphalt will adhere to the inner wall of the storage tank. The device cannot scrape off the asphalt adhering to the inner wall of the storage tank, which will result in insufficient use of asphalt and increase the workload when cleaning the storage tank later.

[0005] Chinese patent discloses an asphalt pavement hot recycling paver (authorization announcement number CN223423065U). This patented technology utilizes the cooperation between the drive component, mixing component, and cleaning component. By using a motor to drive the first bevel gear to rotate, the two second bevel gears drive the first connecting rod and the second connecting rod to rotate, thereby achieving the simultaneous mixing of asphalt inside the mixing drum and scraping off the asphalt adhering to the inner wall of the mixing drum, without wasting asphalt.

[0006] However, it has certain drawbacks: after the roller has been rolling and paving the high-temperature asphalt mixture for a long time, a large amount of asphalt mixture is easily adhered to its surface due to the continuous contact between its surface and the sticky asphalt. These adhered materials will continue to accumulate on the surface of the roller, which will not only change the effective diameter and shape of the roller, making it unable to apply a uniform compaction effect to the pavement, but will also scratch the paved road surface during subsequent rolling processes, or cause the adhered material to fall off and re-embed in the pavement, resulting in obvious quality defects such as waves, roughness and fish tails on the paved road surface. This not only seriously affects the smoothness, appearance consistency and final forming effect of the road surface, but also causes direct waste of asphalt material due to the hardening and falling off of the adhered material. Utility Model Content

[0007] The purpose of this invention is to provide a road construction paver to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: A road construction paver includes a vehicle body, a material tank is fixedly connected to the upper surface of the vehicle body, and a conveying mechanism is provided on the upper surface of the vehicle body to the left of the material tank. Two slide rails are symmetrically fixed to the upper surface of the vehicle body to the left of the conveying mechanism in the front-rear direction. U-shaped plates are movably connected inside the two slide rails, and a pressure roller is rotatably connected between the lower left ends of the two U-shaped plates. A scraping mechanism is provided between the two U-shaped plates on the upper side of the pressure roller. The scraping mechanism includes a rotating rod. Both the front and rear ends of the rotating rod are provided with seat bearings. A fixed sleeve is fixedly sleeved between the two seat bearings on the outside of the rotating rod. Multiple fixed plates are uniformly fixed to the outer surface of the fixed sleeve. A scraping plate is movably connected inside the fixed plate. A fixing bolt is movably connected through one side surface of the fixed plate. A limit mechanism is provided on the outside of the rotating rod on the side of the two seat bearings away from the fixed sleeve.

[0009] As a further embodiment of this utility model: the limiting mechanism includes a spring, with a limiting block and a pawl fixedly connected to the upper and lower ends of the spring, respectively. The left end of the pawl is rotatably connected to a limiting rod, and the lower right end of the pawl is engaged with a ratchet.

[0010] As a further embodiment of this utility model: the rotating rod movably passes through the two U-shaped plates, the two seat bearings are respectively fixed to the opposite side surfaces of the two U-shaped plates, and one end of the fixing bolt is threaded into the interior of the shovel plate.

[0011] As a further embodiment of this utility model: the limiting block and the limiting rod are both fixedly connected to the surface of the U-shaped plate away from the seat bearing, and the ratchet is fixedly sleeved on the outside of the rotating rod.

[0012] As a further embodiment of this utility model: the conveying mechanism includes a conveying pump, which is fixedly connected to the upper surface of the vehicle body, and a first pipe is fixedly connected to the inlet end of the conveying pump. One end of the first pipe is fixedly connected to the lower end of the left side surface of the material tank, and a second pipe is fixedly connected to the outlet end of the conveying pump. The second pipe passes through and is fixedly connected to the upper surface of the vehicle body.

[0013] As a further embodiment of this utility model: the upper surface and the interior of the material tank are provided with a stirring mechanism, the stirring mechanism includes a motor, the output end of the motor is fixedly connected to a stirring rod, multiple stirring blades are fixedly sleeved on the outside of the stirring rod from top to bottom, and a support rod is fixedly sleeved on the outside of the stirring rod above the uppermost stirring blade, and a scraper is fixedly connected to the end of the support rod away from the stirring rod.

[0014] As a further embodiment of this utility model: the motor is fixed to the upper surface of the material tank, the stirring rod is located inside the material tank, and the scraper is attached to the inner surface of the material tank.

[0015] As a further embodiment of this utility model: a connecting plate is fixedly connected between the two slide rails, a telescopic cylinder is fixedly connected to the lower surface of the connecting plate, a lifting plate is fixedly connected to the telescopic end of the telescopic cylinder, and the end of the lifting plate is fixedly connected to two U-shaped plates.

[0016] Compared with the prior art, the beneficial effects of this utility model are: This invention, by incorporating a mixing mechanism and an internal scraper, effectively and continuously mixes the asphalt or concrete in the tank and scrapes away adhering material from the inner wall, thus preventing material clumping and sedimentation, ensuring smooth material flow and high material utilization. A continuous and stable output of material is achieved through a delivery pump and pipeline, providing a constant supply for paving. The height adjustment of the pressure roller via a telescopic cylinder allows for flexible adaptation to different paving thickness requirements. In particular, the combination of the scraping mechanism and the ratchet-pawl limiting mechanism ensures that the scraper continuously and effectively scrapes away material adhering to the pressure roller's surface as it rolls, preventing uneven paving and material waste caused by material adhering to the roller's surface. Furthermore, the scraper is secured with bolts, facilitating quick disassembly and replacement or maintenance after wear. In summary, this significantly improves the efficiency and quality of paving operations. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a road construction paver; Figure 2 This is a schematic diagram of the conveying mechanism in a road construction paver. Figure 3 This is a schematic diagram of the mixing mechanism in a road construction paver. Figure 4 A schematic diagram of the material shoveling mechanism in a road construction paver; Figure 5 This is a partial schematic diagram of the material shoveling mechanism in a road construction paver; Figure 6 This is a schematic diagram of the limiting mechanism in a road construction paver; Figure 7 This is a schematic diagram of the structure of a telescopic cylinder in a road construction paver.

[0018] In the diagram: 1. Vehicle body; 2. Material tank; 3. Conveying mechanism; 4. Conveying pump; 5. Pipeline 1; 6. Pipeline 2; 7. Slide rail; 8. U-shaped plate; 9. Pressure roller; 10. Mixing mechanism; 11. Motor; 12. Mixing rod; 13. Mixing blade; 14. Support rod; 15. Scraper; 16. Material shoveling mechanism; 17. Rotating rod; 18. Seat bearing; 19. Fixing sleeve; 20. Fixing plate; 21. Shovel plate; 22. Fixing bolt; 23. Limiting mechanism; 24. Spring; 25. Limiting block; 26. Pawl; 27. Limiting rod; 28. Ratchet; 29. ​​Connecting plate; 30. Telescopic cylinder; 31. Lifting plate. Detailed Implementation

[0019] Please see Figure 1 and Figure 2 In this embodiment of the utility model, a road construction paver includes a vehicle body 1, which is preferably provided with a tracked or tire-type walking system at its lower part and a handrail at the right end of its upper surface. A material tank 2 is fixedly attached to the upper surface of the vehicle body 1; The interior of material tank 2 is filled with construction materials such as asphalt or concrete; The material tank 2 includes a tank body and a tank cover fixed to the upper end of the tank body; A conveying mechanism 3 is provided on the upper surface of the vehicle body 1 on the left side of the material tank 2. The conveying mechanism 3 includes a conveying pump 4. The delivery pump 4 is a pump corresponding to the material in the material tank 2, such as a special pump for asphalt or concrete; The conveying pump 4 is fixed to the upper surface of the vehicle body 1, and the feed end of the conveying pump 4 is fixed to the pipe 5. One end of the pipe 5 is fixed to the lower end of the left side surface of the material tank 2, and the pipe 5 is connected to the inside of the material tank 2. The discharge end of the conveying pump 4 is fixedly connected to the pipe 2 6, which runs through and is fixed to the upper surface of the vehicle body 1, and is used to pour the material onto the construction ground. The upper surface of the car body 1 is located on the left side of the conveying mechanism 3 and has two slide rails 7 fixedly connected symmetrically in the front and rear directions. Both slide rails 7 have U-shaped plates 8 movably connected inside. The opening of the U-shaped plate 8 faces downwards, and the two arms are distributed on the left and right sides; the U-shaped plate 8 can move up and down inside the slide rail 7; A pressure roller 9 is rotatably connected between the lower left ends of the two U-shaped plates 8; the pressure roller 9 is used to press and spread the material.

[0020] exist Figure 1 and Figure 3 In the middle: A stirring mechanism 10 is provided on the upper surface and inside of the material tank 2. The stirring mechanism 10 includes a motor 11, which is fixedly connected to the upper surface of the material tank 2. A stirring rod 12 is fixedly connected to the output end of the motor 11, and the stirring rod 12 is located inside the material tank 2. The stirring rod 12 is connected to the output end of the motor 11 via a coupling; Multiple stirring blades 13 are fixedly sleeved on the outside of the stirring rod 12 from top to bottom; The stirring blade 13 is used to stir the materials to prevent them from clumping together; A support rod 14 is fixedly sleeved on the outside of the stirring rod 12 above the uppermost stirring blade 13. A scraper 15 is fixedly connected to the end of the support rod 14 away from the stirring rod 12. The scraper 15 is attached to the inner surface of the material tank 2. The scraper 15 is used to clean the inner wall of the material tank 2 to prevent incomplete material discharge; The scraper 15 is preferably made of polyurethane.

[0021] exist Figure 1 , Figures 4-6 In the middle: A scraping mechanism 16 is provided between the two U-shaped plates 8 on the upper side of the pressure roller 9. The scraping mechanism 16 includes a rotating rod 17, which movably passes through the two U-shaped plates 8. Both the front and rear ends of the rotating rod 17 are provided with seat bearings 18, and the two seat bearings 18 are respectively fixed to the opposite side surface of the two U-shaped plates 8. The pedestal bearing 18 includes a bearing housing and a bearing fixed inside the bearing housing. The bearing includes an outer bearing ring and an inner bearing ring that rotates inside the outer bearing ring. The outer bearing ring is fixed in the bearing housing, the bearing housing is fixed on the U-shaped plate 8, and the rotating rod 17 is fixed in the inner bearing ring. Therefore, the pedestal bearing 18 and the rotating rod 17 are in a state of mutual rotation. The outside of the rotating rod 17 is fixedly sleeved between two seat bearings 18 with a fixed sleeve 19. Multiple fixed plates 20 are evenly fixed on the outer surface of the fixed sleeve 19, and a shovel plate 21 is movably connected inside the fixed plate 20. The scraper plate 21 is used to clean the surface of the pressure roller 9 to prevent a large amount of material from adhering to its surface; The material of the shovel plate 21 is preferably high carbon steel or spring steel; A fixing bolt 22 is movably connected through one side surface of the fixing plate 20, and one end of the fixing bolt 22 is threaded into the inside of the shovel plate 21; The fixing bolt 22 facilitates the disassembly and assembly of the shovel plate 21; Limiting mechanisms 23 are provided on the outside of the rotating rod 17 on the side of the two seat bearings 18 away from the fixed sleeve 19. The limiting mechanism 23 includes a spring 24, and the upper and lower ends of the spring 24 are respectively fixed to a limiting block 25 and a pawl 26. The spring 24 is fixed to the limit block 25 and the pawl 26 by screw plugs, making the spring 24 removable; The left end of the pawl 26 is rotatably connected to the limit rod 27. The limit block 25 and the limit rod 27 are both fixed to the surface of the U-shaped plate 8 away from the seat bearing 18. The right end of the pawl 26 is engaged with the ratchet 28, which is fixedly sleeved on the outside of the rotating rod 17. by Figure 1 and Figure 6 From the perspective of the ratchet 26, the ratchet 28 engages with the ratchet 28, allowing the ratchet 28 to rotate normally clockwise but not counterclockwise. When the vehicle body 1 is pulled to the right, the pressure roller 9 rotates clockwise, and the shovel 21 will be subjected to clockwise pressure, causing it to tend to rotate counterclockwise. However, under the action of the ratchet 26 and the ratchet 28, the shovel 21 will be restricted and will not rotate counterclockwise. When it is necessary to replace the shovel 21 to clean the pressure roller 9, simply rotate the lever 17 clockwise by a certain angle so that the other shovel 21 is in a vertically downward position.

[0022] exist Figure 1 and Figure 7 In the middle: a connecting plate 29 is fixedly connected between the two slide rails 7, and a telescopic cylinder 30 is fixedly connected to the lower surface of the connecting plate 29; The telescopic cylinder 30 is preferably a servo electric cylinder; The telescopic cylinder 30 has a lifting plate 31 fixedly connected to its telescopic end, and the end of the lifting plate 31 is fixedly connected to two U-shaped plates 8. The lifting plate 31 is used to drive the two U-shaped plates 8 to rise and fall, thereby adjusting the height of the pressure roller 9 and facilitating the adjustment of the paving height.

[0023] The working principle of this utility model is as follows: First, the operator adjusts the overall height of the lifting plate 31 and the connected U-shaped plate 8 and pressure roller 9 by controlling the lifting and lowering of the telescopic cylinder 30, thereby setting the required paving thickness. Then, the conveying pump 4 and motor 11 are started. The conveying pump 4 draws material from the material tank 2 through pipe 1 5 and continuously pours it onto the construction surface through pipe 2 6. Simultaneously, the motor 11 drives the mixing rod 12 and mixing blade 13 to rotate, continuously stirring the material in the material tank 2 to prevent clumping. The polyurethane scraper 15, fixed to the end of the support rod 14, rotates accordingly and scrapes off the material adhering to the inner wall of the material tank 2, ensuring thorough material distribution. The operator then guides the material through the support rod 14. When the vehicle body 1 is pulled forward, the pressure roller 9 rolls and presses the poured material to spread it. During this process, material may adhere to the surface of the pressure roller 9. In the material scraping mechanism 16 located on it, the scraper plate 21 in contact with the surface of the pressure roller 9 is prevented from rotating counterclockwise by the one-way limiting mechanism 23 composed of ratchet 28 and pawl 26, so that the material adhering to the surface of the pressure roller 9 can be continuously scraped off. When it is necessary to replace the working scraper plate 21, simply rotate the rotating rod 17 clockwise by hand to rotate the next clean scraper plate 21 to the working position. After all the paving operations are completed, the fixing bolts 22 can be loosened to remove all the scraper plates 21 from the fixing plate 20 for centralized cleaning and maintenance.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A road construction paver, comprising a vehicle body (1), characterized in that, The upper surface of the vehicle body (1) is fixedly connected to a material tank (2), and a conveying mechanism (3) is provided on the upper surface of the vehicle body (1) to the left of the material tank (2). Two slide rails (7) are symmetrically fixedly connected to the upper surface of the vehicle body (1) in the front-back direction to the left of the conveying mechanism (3). U-shaped plates (8) are movably connected inside the two slide rails (7). A pressure roller (9) is rotatably connected between the lower left ends of the two U-shaped plates (8). A scraping mechanism (16) is provided between the two U-shaped plates (8) on the upper side of the pressure roller (9). The scraping mechanism (16) includes a rotating rod (17). Both the front and rear ends of the rotating rod (17) are provided with seat bearings (18). A fixed sleeve (19) is fixedly sleeved between the two seat bearings (18) on the outside of the rotating rod (17). Multiple fixed plates (20) are uniformly fixed on the outer surface of the fixed sleeve (19). A scraper plate (21) is movably connected inside the fixed plate (20). A fixing bolt (22) is movably connected through one side surface of the fixed plate (20). A limit mechanism (23) is provided on the side of the rotating rod (17) away from the fixed sleeve (19) between the two seat bearings (18).

2. A road construction paver as claimed in claim 1, wherein, The limiting mechanism (23) includes a spring (24), with a limiting block (25) and a pawl (26) fixedly connected to the upper and lower ends of the spring (24) respectively. The left end of the pawl (26) is rotatably connected to a limiting rod (27), and the lower right end of the pawl (26) is engaged with a ratchet (28).

3. A road construction paver as claimed in claim 1, wherein, The rotating rod (17) moves through the two U-shaped plates (8), and the two seat bearings (18) are respectively fixed to the opposite side surfaces of the two U-shaped plates (8). One end of the fixing bolt (22) is threaded into the inside of the shovel plate (21).

4. A road construction paver as claimed in claim 2, wherein, The limiting block (25) and the limiting rod (27) are both fixed to the surface of the U-shaped plate (8) away from the seat bearing (18), and the ratchet (28) is fixedly sleeved on the outside of the rotating rod (17).

5. A road construction paver as claimed in claim 1, wherein, The conveying mechanism (3) includes a conveying pump (4), which is fixed to the upper surface of the vehicle body (1). The inlet end of the conveying pump (4) is fixed to a pipe (5), one end of which is fixed to the lower end of the left side surface of the material tank (2). The outlet end of the conveying pump (4) is fixed to a pipe (6), which is fixed to the upper surface of the vehicle body (1).

6. A road construction paver as claimed in claim 1, wherein, The upper surface and interior of the material tank (2) are provided with a stirring mechanism (10). The stirring mechanism (10) includes a motor (11). The output end of the motor (11) is fixedly connected to a stirring rod (12). Multiple stirring blades (13) are fixedly sleeved on the outside of the stirring rod (12) from top to bottom. A support rod (14) is fixedly sleeved on the outside of the stirring rod (12) above the uppermost stirring blade (13). A scraper (15) is fixedly connected to the end of the support rod (14) away from the stirring rod (12).

7. A road construction paver according to claim 6, characterized in that, The motor (11) is fixed to the upper surface of the material tank (2), the stirring rod (12) is located inside the material tank (2), and the scraper (15) is attached to the inner surface of the material tank (2).

8. A road construction paver as claimed in claim 1, wherein, A connecting plate (29) is fixed between the two slide rails (7). A telescopic cylinder (30) is fixed to the lower surface of the connecting plate (29). A lifting plate (31) is fixed to the telescopic end of the telescopic cylinder (30). The end of the lifting plate (31) is fixed to two U-shaped plates (8).

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