Grading material re-layering paving device and land leveler

Abstract

The utility model relates to a grading ingredient re-layering paving device and a land leveler, and belongs to the field of road construction machinery. According to the technical scheme, the grading ingredient re-layering paving device comprises a vehicle connecting assembly, a roller assembly is arranged in front of the vehicle connecting assembly, the roller assembly comprises a roller body and a rotation driving device, the roller body comprises a plurality of blade plates distributed around the rolling axis, and screen holes are formed in the blade plates. And the opening sizes of the sieve pores in each blade plate are sequentially increased along the rolling direction. The device is installed on an advancing vehicle through the vehicle connecting assembly, the roller body rotates, the spread graded ingredients are shoveled into the roller body and then screened layer by layer through the screening holes in the blade plates, the graded ingredients fall out in sequence according to the particle size from large to small, at the moment, small-particle stones fall on the upper layer of large stones, re-layering of the graded ingredients is achieved, and the quality of the graded ingredients is improved. Therefore, the influence of large stones on the upper layer is eliminated or reduced, the leveling efficiency of the graded ingredients is improved, and the flatness of the graded ingredient layer is improved.

Description

Technical Field

[0001] This utility model relates to the field of road construction machinery, and in particular to a graded material re-layering paving device and a grader. Background Technology

[0002] The main construction process of road paving includes base cleaning, base layer paving, and road hardening. The base layer paving involves spreading a layer of graded material on the roadbed. The graded material is composed of crushed stones of different sizes. After spreading the graded material, a grader is used to level the graded material layer (base layer). Then, asphalt, cement, and other materials are spread as the surface layer to harden the road.

[0003] During the paving process of graded aggregates, due to the varying sizes of the crushed stone particles, under the combined influence of gravity, external forces such as vibration, and the tipping action during paving, crushed stone of different sizes will exhibit a clear stratification trend. Smaller-sized crushed stone tends to sink to the lower layer under the influence of various forces, while larger-sized stones will remain in the upper layer.

[0004] When a grader is performing leveling work, the scraper is close to the ground surface, typically maintaining a distance of 2cm during the grading stage. When the grader encounters large, protruding stones during its movement, the scraper may not be able to press them down smoothly. In this case, the stones are pushed by the scraper, gradually forming a pile in front of it. Furthermore, the pushed-down larger stones can create grooves on the surface of the grading layer. These grooves severely damage the smoothness of the grading layer, significantly affecting the paving effect. To remedy this defect, workers need to spend a considerable amount of time and effort to repair the grooves, and may even need to repeat the leveling work multiple times. This not only increases labor costs but also significantly impacts the overall efficiency of road construction, delaying the construction schedule. Utility Model Content

[0005] This invention addresses the problem that larger stones in graded materials tend to remain on the surface during the paving process and accumulate in front of the grader blade during the leveling stage, easily damaging the flatness of the graded material layer. It provides a graded material re-layer paving device.

[0006] To solve the above problems, the technical solution adopted by this utility model is a graded material re-layering paving device, including a vehicle connection assembly. A roller assembly is located in front of the vehicle connection assembly. The roller assembly includes a roller body and a rotary drive device for driving the roller body to rotate. The roller body includes multiple blades distributed around the rolling axis. Screen holes are formed on the blades, and the opening size of the screen holes on each blade increases sequentially along the rolling direction. This device is installed on a traveling vehicle via the vehicle connection assembly. As the roller body rotates, the graded material to be spread is shoveled into the roller body. Then, as the roller body rotates, it is screened layer by layer through the screen holes on the blades. The graded material falls out sequentially according to particle size from largest to smallest. At this time, small stones fall on top of larger stones, realizing the re-layering of the graded material. This eliminates or reduces the influence of large stones in the upper layer during leveling, greatly improving the leveling efficiency of the graded material and increasing the flatness of the graded material layer.

[0007] As a preferred implementation of a graded material re-layering paving device, the drum body also includes a rolling shaft. One long side of the blade plate is fixedly connected to the outer circumferential surface of the rolling shaft. End plates are also provided at both ends of the rolling shaft, and the two short sides of the blade plate are respectively fixedly connected to the two end plates. The drum body has stronger overall integrity, supported by the rolling shaft and end plates, improving structural strength. During the screening and grading process, it ensures stable operation of the blade plate, avoiding poor screening effect due to blade plate swaying caused by a loose structure. This helps extend the service life of the device, reduces time and economic costs caused by frequent maintenance, improves equipment reliability, and thus ensures the continuity of construction.

[0008] As a preferred implementation of a graded material re-layering paving device, the drum body also includes multiple stiffening plates, which are perpendicular to the rolling shaft. The stiffening plates, the rolling shaft, and the blade plates are fixedly connected to each other. By setting the stiffening plates to form an integral grid skeleton structure, the structural strength of the drum body is further enhanced, and the deformation of the blade plates and the rolling shaft can be effectively prevented when subjected to the impact of the graded materials and the forces during the screening process.

[0009] As a preferred implementation of a graded material re-layering paving device, the roller assembly further includes a fork-shaped frame. The fork-shaped frame includes a connecting plate and fork plates located at both ends of the connecting plate. The fork plates extend forward of the connecting plate, and the roller body is rotatably mounted between the two fork plates. The rotary drive device is mounted on the fork plates, and the output shaft of the rotary drive device passes through the fork plates and is fixedly connected to the roller body. The fork-shaped frame provides effective support for the roller body, improves installation strength, and ensures rotational stability.

[0010] As a preferred implementation of a graded material re-layering paving device, the rotary drive device is a hydraulic motor. Hydraulic motors feature high torque and stable speed, providing stable and powerful force for the rotation of the drum body, making them suitable for graded material excavation. Simultaneously, during screening and grading, the speed can be flexibly adjusted according to different working conditions and graded material characteristics to ensure optimal screening results. Stable power output makes the screening process more uniform and efficient, better adaptable to complex construction environments, and improves the equipment's applicability and construction efficiency.

[0011] As a preferred embodiment of a graded material re-layering paving device, the vehicle connection assembly includes a fixed support. A first connecting frame and a second connecting frame are provided between the fixed support and the connecting plate of the fork-shaped frame. The first and second connecting frames are arranged vertically. Both ends of the first connecting frame are hinged to the fixed support and the connecting plate, respectively. Both ends of the second connecting frame are also hinged to the fixed support and the connecting plate, respectively. A lifting cylinder is provided between the fixed support and either the first or second connecting frame. The roller assembly can flexibly adjust its height, enabling precise re-layering operations under different construction sites and graded material paving thickness requirements. Controlled by the lifting cylinder, it can quickly adapt to changes in construction conditions, improving the equipment's versatility and construction efficiency.

[0012] As a preferred implementation of a graded material re-layering and spreading device, the planar four-bar linkage formed by the first connecting frame, the second connecting frame, the fixed support, and the connecting plate is a parallelogram. The parallelogram structure ensures the stability of the roller assembly during the lifting process, maintaining a basically the same posture at all times, and ensuring a stable and uniform screening effect at different heights.

[0013] As a preferred embodiment of a graded material re-layering paving device, a shovel plate is provided on the edge of the blade plate away from the rotation axis, and the shovel plate is bent in the rotation direction relative to the blade plate. This improves the efficiency of shoveling the graded material into the drum body.

[0014] On the other hand, this utility model also provides a grader, including a grader body, with the aforementioned graded material re-layering paving device provided at the front end of the grader body in the direction of travel. By directly integrating the graded material re-layering paving device with the grader body, integrated paving and re-layering operations are achieved, reducing the connection time between construction procedures, improving the continuity and overall efficiency of construction, and contributing to improved construction quality and progress.

[0015] As a preferred implementation of a grader, the grader body travels at a speed of 3-5 km / h, and the roller body rotates at a speed of 20-30 rpm. The relatively slow travel of the grader allows the roller body to maintain a relatively high rotational speed, ensuring that small-diameter stones cover large-diameter stones at every position along the travel direction. This reduces the impact of differences in the falling time of small and large-diameter stones due to roller rotation, thus guaranteeing the re-layering effect.

[0016] As can be seen from the above technical solution, the beneficial effects of this utility model are as follows: The graded material re-layering paving device of this solution is connected to a traveling vehicle through a vehicle connection component. The main body of the roller assembly rotates with the help of a rotary drive device (such as a hydraulic motor), and the sieve holes on its blade plates can effectively screen the graded material, achieving re-layering and greatly improving the leveling efficiency and flatness of the graded material. In terms of structural design, the setting of the rolling shaft, end plate, and stiffening plate enhances the integrity and structural strength of the main body of the roller, ensuring stable screening and extending the service life of the equipment; the fork frame provides stable support for the main body of the roller; the vehicle connection component, together with the lifting cylinder, can flexibly adjust the height to adapt to different construction conditions, and the planar four-bar mechanism with a parallelogram structure ensures lifting stability. The shovel plate on the blade plate improves the feeding efficiency. The paving device and the grader body are combined to achieve integrated operation, reducing the process connection time and improving the continuity of construction and overall efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the description 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 the graded material re-layering paving device according to Embodiment 1 of this utility model.

[0019] Figure 2 This is a schematic diagram of the main body of the roller in the graded material re-layering paving device of Embodiment 1 of this utility model.

[0020] Figure 3 This is a schematic diagram of the working state of the graded material re-layering paving device according to Embodiment 1 of this utility model.

[0021] Figure 4 This is a schematic diagram of the lifting of the roller body in the graded material re-layering paving device of Embodiment 1 of this utility model.

[0022] Figure 5 This is a schematic diagram of the structure of the grader according to Embodiment 2 of this utility model.

[0023] Explanation of main figure symbols

[0024] 1. Roller body, 11. Blade plate, 12. Rolling shaft, 13. End plate, 14. Rib plate, 15. Shovel plate, 2. Rotary drive device, 3. Fork frame, 4. Fixed support, 5. First connecting frame, 6. Second connecting frame, 7. Lifting cylinder, 8. Grader body, 9. Scraper. Detailed Implementation

[0025] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0026] like Figure 1 As shown, a graded material re-layering paving device includes a vehicle connection assembly for mounting the device on a mobile vehicle (such as a tractor). A roller assembly is located in front of the vehicle connection assembly, and the roller assembly is the working component of the device. Figure 2 As shown, the roller assembly includes a fork-shaped frame 3, a roller body 1, and a rotary drive device 2 for driving the roller body 1 to rotate.

[0027] The fork frame 3 includes a connecting plate and fork plates located at both ends of the connecting plate. The fork plates extend towards the front side of the connecting plate. The roller body 1 is rotatably installed between the two fork plates. The rotary drive device 2 is installed on the fork plates. The rotary drive device 2 is preferably a hydraulic motor. The output shaft of the rotary drive device 2 passes through the fork plates and is fixedly connected to the roller body 1.

[0028] The roller body 1 includes a rolling shaft 12, which is the axis of rotation of the roller body 1. Multiple blades 11 are arranged on the outer periphery of the rolling shaft 12. The multiple blades 11 are evenly distributed around the circumference of the rolling shaft and are located within the axial section of the roller body. The roller body also includes a long side of the blade 11 that is fixedly connected to the outer periphery of the rolling shaft 12. The two ends of the rolling shaft 12 are also provided with end plates 13. The two short sides of the blades 11 are fixedly connected to the two end plates 13 respectively. The roller body also includes multiple stiffening plates 14. The stiffening plates 14 are perpendicular to the rolling shaft 12. The stiffening plates 14, the rolling shaft 12, and the blades 11 are fixedly connected to each other.

[0029] Each of the blade plates 11 is provided with sieve holes, and the opening size of the sieve holes on each blade plate 11 increases sequentially along the rolling direction, such as in... Figure 3In the middle, the drum body 1 rotates counterclockwise, and the size of the screen holes on the multiple blade plates 11 gradually increases counterclockwise. The blade plate 11 is provided with a shovel plate 15 on the side away from the rotation axis, and the shovel plate 15 is bent in the rotation direction relative to the blade plate 11.

[0030] In this way, during operation, the graded material is shoveled into the main body of the drum, and then, as the main body of the drum rotates, it is screened layer by layer through the sieve holes on the blade plate. The graded material falls out in order of decreasing particle size. At this time, small stones fall on the upper layer of large stones, realizing the re-layering of the graded material, thereby eliminating or reducing the influence of large stones on the upper layer during leveling.

[0031] like Figure 4 As shown, a first connecting frame 5 and a second connecting frame 6 are provided between the fixed support 4 and the connecting plate of the fork-shaped frame 3. The first connecting frame 5 and the second connecting frame 6 are arranged vertically. The two ends of the first connecting frame 5 are hinged to the fixed support 4 and the connecting plate, respectively. The two ends of the second connecting frame 6 are hinged to the fixed support 4 and the connecting plate, respectively. A lifting cylinder 7 is provided between the fixed support 4 and the first connecting frame 5 or the second connecting frame 6. The planar four-bar linkage formed by the first connecting frame 5, the second connecting frame 6, the fixed support 4, and the connecting plate is a parallelogram. The roller assembly can flexibly adjust its height, and can accurately perform re-layering operations under different construction sites and graded material paving thickness requirements. Through the control of the lifting cylinder, it can quickly adapt to changes in construction conditions, improving the versatility of the equipment and construction efficiency. The parallelogram structure ensures the stability of the roller assembly during the lifting process, always maintaining a basically the same posture, and the screening effect is stable and uniform at different heights.

[0032] Example 2

[0033] This embodiment provides a grader, such as Figure 5 As shown, it includes a grader body 8, which is an existing engineering machine. It includes a vehicle body that provides the power for travel and a scraper 9 located in front of the vehicle body. The front end of the grader body 8 in the direction of travel is provided with the graded material re-layering paving device provided in Embodiment 1. The fixed support 4 of the graded material re-layering paving device is installed in front of the front frame of the grader body 8.

[0034] When this grader is working, its travel speed is relatively slow, generally 3-5 km / h. Based on this, the rotation speed of the roller body is relatively fast, at 20-30 rpm. This ensures that small-diameter stones can cover large-diameter stones at every position in the travel direction.

[0035] As can be seen from the above embodiments, the advantages of this utility model are as follows: The graded material re-layering paving device of this solution is connected to a traveling vehicle through a vehicle connection component. The main body of the roller assembly rotates with the aid of a rotary drive device (such as a hydraulic motor), and the sieve holes on its blade plates can effectively screen the graded material, achieving re-layering and greatly improving the leveling efficiency and flatness of the graded material. In terms of structural design, the setting of the rolling shaft, end plates, and stiffening plates enhances the integrity and structural strength of the main body of the roller, ensuring stable screening and extending the service life of the equipment; the fork-shaped frame provides stable support for the main body of the roller; the vehicle connection component, together with the lifting cylinder, can flexibly adjust the height to adapt to different construction conditions, and the planar four-bar mechanism with a parallelogram structure ensures lifting stability. The shovel plates on the blade plates improve the feeding efficiency. The paving device and the grader body are combined to achieve integrated operation, reducing the process connection time and improving the continuity of construction and overall efficiency.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A graded material re-layering paving apparatus, characterised in that, The application relates to a vehicle connecting assembly, which is provided with a drum assembly in front, the drum assembly comprising a drum body (1) and a rotary drive device (2) for driving the drum body (1) to rotate, the drum body (1) comprising a plurality of blade plates (11) distributed around a rolling axis, and a plurality of sieve holes are formed in the blade plates (11), and the opening sizes of the sieve holes in each blade plate (11) gradually increase along the rolling direction.

2. A graded material re-layering paving apparatus according to claim 1, wherein, The drum body further comprises a rolling shaft (12), one long side of the blade plate (11) is fixedly connected with the outer circumferential surface of the rolling shaft (12), and end plates (13) are further arranged at the two ends of the rolling shaft (12), and the two short sides of the blade plate (11) are fixedly connected with the two end plates (13) respectively.

3. A graded material re-layering paving apparatus according to claim 2, wherein, The drum body further comprises a plurality of rib plates (14), the rib plates (14) are perpendicular to the rolling shaft (12), and the rib plates (14), the rolling shaft (12) and the blade plates (11) are fixedly connected with each other.

4. A graded material re-layering paving apparatus according to claim 1, wherein, The drum assembly further comprises a fork-shaped frame (3), the fork-shaped frame (3) comprises a connecting plate and fork plates arranged at the two ends of the connecting plate, the fork plates extend to the front side of the connecting plate, the drum body (1) is rotatably arranged between the two fork plates, the rotary drive device (2) is arranged on the fork plates, and the output shaft of the rotary drive device (2) penetrates through the fork plates and is fixedly connected with the drum body (1).

5. A graded material re-layering paving apparatus according to claim 1, wherein, The rotary drive device (2) is a hydraulic motor.

6. A graded material relayering and paving apparatus according to claim 4, wherein, The vehicle connecting assembly comprises a fixed support (4), a first connecting frame (5) and a second connecting frame (6) are arranged between the fixed support (4) and the connecting plate of the fork-shaped frame (3), the first connecting frame (5) and the second connecting frame (6) are arranged in a vertical mode, the two ends of the first connecting frame (5) are hingedly connected with the fixed support (4) and the connecting plate respectively, the two ends of the second connecting frame (6) are hingedly connected with the fixed support (4) and the connecting plate respectively, and a lifting oil cylinder (7) is arranged between the fixed support (4) and the first connecting frame (5) or the second connecting frame (6).

7. A graded material relayering and paving apparatus according to claim 6, wherein, The first connecting frame (5), the second connecting frame (6), the fixed support (4) and the connecting plate form a parallelogram plane four-link mechanism.

8. A graded material relayering and paving apparatus according to claim 1, wherein, The side edge of the blade plate (11) away from the rotating axis is provided with a shovel plate (15), and the shovel plate (15) is bent to the rotating direction relative to the blade plate (11).

9. A grader comprising a grader body (8), characterized in that The front end of the traveling direction of the grader body (8) is provided with the graded material re-layering and paving device as claimed in any one of claims 1-8.

10. The grader of claim 9, wherein, The traveling speed of the grader body (8) is 3-5 km / h, and the rotating speed of the drum body is 20-30 rpm.

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