A highway gravel replacement aggregate distribution device capable of uniform distribution
By designing the reciprocating vibration of the feeding and unloading components and the scraper of the spreading component, the problem of uneven stone spreading was solved, achieving uniform stone spreading and thickness control, thus improving construction quality and road performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN ROAD & BRIDGE CONSTRUCTION GROUP CO LTD
- Filing Date
- 2025-09-01
- Publication Date
- 2026-07-21
Smart Images

Figure CN224531394U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aggregate distribution equipment for crushed stone replacement, and in particular to a highway crushed stone replacement aggregate distribution device that can distribute aggregate evenly. Background Technology
[0002] In highway construction and maintenance projects, crushed stone spreading is an important task. It is required for various construction projects such as top and bottom sealing layers, prime coats, asphalt surface treatments, and asphalt grouting. To ensure the quality of highway construction and its service life, crushed stone needs to be evenly spread on the road surface, ensuring precise spreading width and thickness, and improving the road's skid resistance, water permeability, and other properties.
[0003] Chinese Patent Publication No. CN221460865U discloses a gravel spreading device for highway construction, including a base. A box is fixedly installed on the upper surface of the base. A vertical pipe is connected to the top of the box, and a collection hopper is connected to the top of the vertical pipe. A housing is fixedly installed on the upper surface of the base, and a motor is fixedly installed on the inner wall of the housing. A turntable is fixedly installed on the output shaft of the motor. A connecting rod is rotatably connected to the surface of the turntable via a rotating shaft. One end of the connecting rod is rotatably connected to a push rod via the rotating shaft. The device controls the motor to work, which then drives the connecting rod on the turntable to move. The connecting rod then drives one end of the push rod to move, thereby causing the push rod to move a push block. This push block moves inside the housing. When gravel falls into the housing, the push block pushes the gravel out from one side of the housing, facilitating the spreading operation and ensuring even distribution of the gravel, thus improving the efficiency of the device.
[0004] Although the equipment in the aforementioned documents can spread crushed stone, it cannot ensure that the crushed stone is evenly distributed, nor can it be scraped evenly on the ground. Uneven distribution will cause local accumulation or omission of crushed stone on the ground, resulting in uneven thickness and causing the roadbed to be unbalanced. Utility Model Content
[0005] The main purpose of this invention is to provide a road gravel replacement aggregate distribution device that can distribute materials evenly, which can effectively solve the problems mentioned above.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A road gravel replacement aggregate distribution device capable of uniformly distributing aggregate includes a feeding assembly, a discharge assembly rotatably connected to the lower side of the feeding assembly, a motor fixedly connected to one end of the discharge assembly via a bracket, a pulley set fixedly connected to both the feeding assembly and the discharge assembly, wheels mounted on both sides of the lower end of the discharge assembly, a feeding assembly fixedly connected to the lower rear end of the discharge assembly, and the output end of the motor fixedly connected to the pulley set via a coupling.
[0007] Preferably, the feeding assembly includes a base plate, with mounting plates fixedly connected to both ends of the base plate. A material box is provided on the upper side of the base plate, and a rotating shaft is rotatably connected to the front side of the base plate. A plurality of cams arranged in a linear array are fixedly connected to the outer surface of the rotating shaft. A plurality of springs arranged in a linear array are fixedly connected to the upper end of the base plate and the lower end of the material box.
[0008] Preferably, the unloading assembly includes a material cylinder disposed on the lower side of the base plate, a rotating shaft rotatably connected to the middle of the material cylinder, a plurality of plates arranged in a ring array fixedly connected to the outer surface of the rotating shaft rotatably, support plates fixedly connected to both sides of the upper end of the material cylinder, and the upper and lower sides of the material cylinder are open.
[0009] Preferably, the material box is rotatably connected to both of the support plates.
[0010] Preferably, the fabric assembly includes a fixing plate fixedly connected to the lower rear end of the material cylinder, a threaded rod threadedly connected to the middle of the fixing plate, a support rotatably connected to the lower end of the threaded rod, a scraper fixedly connected to the lower side of the support, guide rods slidably connected to both sides of the fixing plate, the lower ends of the two guide rods being fixedly connected to the support, and a second spring being fixedly connected to the upper end of the support and the lower end of the fixing plate, with the two second springs sleeved on the outer surface of one of the guide rods that are close to each other.
[0011] Preferably, one left end of the rotating shaft passes through the base plate and is fixedly connected to the pulley assembly.
[0012] Preferably, the left end of the second rotating shaft passes through the material cylinder and is fixedly connected to the pulley assembly.
[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The device, through its designed feeding component, can drive the crushed stone into the unloading component through reciprocating vibration, avoiding blockage, reducing the number of downtimes for cleaning, and improving the continuity and efficiency of operation. The designed unloading component can evenly spread the crushed stone on the ground, solving the problems of local accumulation and missed spreading, improving the uniformity of material distribution, and ensuring the quality of the replacement structure.
[0014] 2. This device, through its designed material distribution component, can evenly spread the crushed stone on the ground using a scraper. The gap between the scraper and the ground directly controls the final thickness of the crushed stone, improving the flatness before compaction and ensuring the compaction effect. Furthermore, the height of the scraper is adjustable to accommodate crushed stone aggregates of different particle sizes and to cope with uneven ground conditions, adapting to complex construction scenarios and enhancing the device's versatility. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial cross-sectional structural diagram of the present invention; Figure 3 This is an exploded view of the feeding assembly of this utility model; Figure 4 This is a partial cross-sectional structural diagram of the unloading assembly of this utility model; Figure 5 This is a schematic diagram of the fabric component structure of this utility model.
[0016] In the diagram: 1. Feeding assembly; 11. Base plate; 12. Mounting plate; 13. Material box; 14. Rotating shaft one; 15. Cam; 16. Spring one; 2. Unloading assembly; 21. Material cylinder; 22. Rotating shaft two; 23. Plate body; 24. Support plate; 3. Motor; 4. Pulley assembly; 5. Wheel; 6. Fabric feeding assembly; 61. Fixing plate; 62. Threaded rod; 63. Support; 64. Scraper; 65. Guide rod; 66. Spring two. Detailed Implementation
[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0018] Example 1, as Figure 1 and Figure 2 As shown, a road gravel replacement aggregate distribution device that can uniformly distribute aggregate includes a feeding component 1, a discharge component 2 rotatably connected to the lower side of the feeding component 1, a motor 3 fixedly connected to one end of the discharge component 2 via a bracket, a pulley set 4 fixedly connected to both the feeding component 1 and the discharge component 2, wheels 5 installed on both sides of the lower end of the discharge component 2, a feeding component 6 fixedly connected to the lower rear end of the discharge component 2, and the output end of the motor 3 fixedly connected to the pulley set 4 via a coupling.
[0019] like Figure 3 As shown, the feeding assembly 1 includes a base plate 11, with mounting plates 12 fixedly connected to both ends of the base plate 11. A material box 13 is provided on the upper side of the base plate 11. A rotating shaft 14 is rotatably connected to the front side of the base plate 11. Several cams 15 arranged in a linear array are fixedly connected to the outer surface of the rotating shaft 14. Several springs 16 arranged in a linear array are fixedly connected to the upper end of the base plate 11 and the lower end of the material box 13.
[0020] Specifically, the left end of the rotating shaft 14 passes through the base plate 11 and is fixedly connected to the pulley group 4.
[0021] In this embodiment, the device can be used in conjunction with dump trucks, stone pavers, etc. First, the device is installed on the vehicle using the mounting plate 12 and fasteners. Then, the crushed stone is poured into the material box 13. The motor 3 drives the pulley group 4 to rotate, the pulley group 4 drives the rotating shaft 14 to rotate, the rotating shaft 14 drives the cam 15 to rotate, and the cam 15 pushes the material box 13 to move back and forth. The cam 15 and the spring 16 work together to drive the material box 13 and the crushed stone inside to vibrate back and forth, and the crushed stone enters the material cylinder 21. like Figure 4 As shown, the unloading assembly 2 includes a material cylinder 21 located on the lower side of the base plate 11. A rotating shaft 22 is rotatably connected to the middle of the material cylinder 21. Several plates 23 arranged in a ring array are fixedly connected to the outer surface of the rotating shaft 22. Support plates 24 are fixedly connected to both sides of the upper end of the material cylinder 21. The upper and lower sides of the material cylinder 21 are open.
[0022] Specifically, the material box 13 is rotatably connected to both support plates 24.
[0023] Furthermore, the left end of the rotating shaft 22 passes through the material cylinder 21 and is fixedly connected to the pulley group 4.
[0024] The pulley assembly 4 also drives the rotating shaft 22 to rotate, which in turn drives the plate 23 to rotate. When the plate 23 rotates, it moves the crushed stone that falls on the plate 23 together until the crushed stone is moved to the lower side of the material cylinder 21. The crushed stone falls from the opening at the lower side of the material cylinder 21 and is scattered on the ground.
[0025] Example 2: Based on Example 1, this example adds a cloth-laying component 6, which can scrape the gravel evenly spread on the ground using a scraper. The final thickness of the gravel can be directly controlled by the gap between the scraper and the ground. The height of the scraper can also be adjusted to adapt to complex construction scenarios and enhance the versatility of the device.
[0026] like Figure 5 As shown, the fabric assembly 6 includes a fixed plate 61 fixedly connected to the lower rear end of the material cylinder 21. A threaded rod 62 is threadedly connected to the middle of the fixed plate 61. A support 63 is rotatably connected to the lower end of the threaded rod 62. A scraper 64 is fixedly connected to the lower side of the support 63. Guide rods 65 are slidably connected to both sides of the fixed plate 61. The lower ends of the two guide rods 65 are fixedly connected to the support 63. A second spring 66 is fixedly connected to the upper end of the support 63 and the lower end of the fixed plate 61. The two second springs 66 are sleeved on the outer surface of a guide rod 65 that is close to each other.
[0027] In this embodiment, as the device moves with the vehicle, the scraper 64 flattens the gravel layer spread on the ground to achieve uniform material distribution. The height of the scraper 64 can be adjusted according to the thickness of the crushed stone and the particle size of the crushed stone. First, rotate the threaded rod 62. The threaded rod 62 drives the support 63 and the scraper 64 to move in the vertical direction. After the scraper 64 is moved to a suitable height, stop rotating the threaded rod 62. While the support 63 and scraper 64 are raised and lowered, the two guide rods 65 slide in the fixed plate 61 to guide the movement of the support 63. The second spring 66 can play a buffering role. As there is a mechanical clearance between the threaded rod 62 and the nut, the scraper 64 may wobble slightly during the raising and lowering process. The preload of the second spring 66 can eliminate the clearance, making the raising and lowering of the scraper 64 more stable and reducing the impact of vibration on the fabric accuracy.
[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A highway crushed stone replacement aggregate distribution device capable of uniformly distributing aggregate, comprising a feeding assembly (1), characterized in that: The unloading assembly (1) is rotatably connected to the lower side of the unloading assembly (2). One end of the unloading assembly (2) is fixedly connected to a motor (3) via a bracket. The unloading assembly (1) and the unloading assembly (2) are jointly fixedly connected to a pulley group (4). Wheels (5) are installed on both sides of the lower end of the unloading assembly (2). A cloth-laying assembly (6) is fixedly connected to the lower rear end of the unloading assembly (2). The output end of the motor (3) is fixedly connected to the pulley group (4) via a coupling.
2. The highway crushed stone replacement aggregate distribution device with uniform material distribution according to claim 1, characterized in that: The feeding assembly (1) includes a base plate (11), with mounting plates (12) fixedly connected to both ends of the base plate (11). A material box (13) is provided on the upper side of the base plate (11). A rotating shaft (14) is rotatably connected to the front side of the base plate (11). A number of cams (15) arranged in a linear array are fixedly connected to the outer surface of the rotating shaft (14). A number of springs (16) arranged in a linear array are fixedly connected to the upper end of the base plate (11) and the lower end of the material box (13).
3. The highway crushed stone replacement aggregate distribution device with uniform material distribution according to claim 2, characterized in that: The unloading assembly (2) includes a material cylinder (21) located on the lower side of the base plate (11). A rotating shaft (22) is rotatably connected to the middle of the material cylinder (21). Several plates (23) arranged in a ring array are fixedly connected to the outer surface of the rotating shaft (22). Support plates (24) are fixedly connected to both sides of the upper end of the material cylinder (21). The upper and lower sides of the material cylinder (21) are open.
4. The highway crushed stone replacement aggregate distribution device with uniform material distribution according to claim 3, characterized in that: The material box (13) is rotatably connected to both of the support plates (24).
5. A highway crushed stone replacement aggregate distribution device with uniform material distribution according to claim 3, characterized in that: The fabric assembly (6) includes a fixing plate (61) fixedly connected to the lower rear end of the material cylinder (21). A threaded rod (62) is threadedly connected to the middle of the fixing plate (61). A support (63) is rotatably connected to the lower end of the threaded rod (62). A scraper (64) is fixedly connected to the lower side of the support (63). Guide rods (65) are slidably connected to both sides of the fixing plate (61). The lower ends of the two guide rods (65) are fixedly connected to the support (63). A second spring (66) is fixedly connected to the upper end of the support (63) and the lower end of the fixing plate (61). The two second springs (66) are sleeved on the outer surface of one of the guide rods (65) that are close to each other.
6. The highway crushed stone replacement aggregate distribution device with uniform material distribution according to claim 2, characterized in that: The left end of the rotating shaft (14) passes through the base plate (11) and is fixedly connected to the pulley group (4).
7. A highway crushed stone replacement aggregate distribution device with uniform material distribution according to claim 3, characterized in that: The left end of the rotating shaft (22) passes through the material cylinder (21) and is fixedly connected to the pulley group (4).