A line-spreading vehicle for road construction width control

Abstract

This utility model discloses a road construction width control spreading vehicle, including a movable support frame and a material box installed on the upper part. The material box has a discharge port at the bottom that is rotatably supported by a spreading impeller via a rotating shaft. The spreading impeller includes multiple impeller short sections assembled on the rotating shaft. Any number of impeller short sections can be fixed to the rotating shaft through a plug-in limiting mechanism to adjust the spreading width. The outer side of the rotating shaft is driven by a chain drive to the movable wheel support shaft at the bottom of the movable support frame. This utility model achieves flexible control of the spreading width by setting up a movable spreading trolley and setting an adjustable impeller short section structure and a plug-in limiting mechanism at the bottom of the material box of the spreading trolley. It solves the problem that traditional spreading vehicles cannot accurately control the width and has the advantages of accurately controlling the spreading width, facilitating quick disassembly and maintenance, and improving construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of line spreading vehicles, specifically to a line spreading vehicle for controlling the width of road construction. Background Technology

[0002] With the development of road construction technology, earthwork construction is gradually shifting towards mechanized construction. In the road foundation construction stage, lime line setting serves as an important construction benchmark, and its accuracy directly affects the quality of subsequent construction. Traditional lime line setting methods mainly rely on workers using shovels and wooden sticks to pound and spread the lime. This method is not only inefficient and labor-intensive, but also makes it difficult to ensure the straightness and uniformity of the line setting.

[0003] Although existing lime-spreading and line-laying trolleys have achieved mechanized operation, they still have obvious defects: they cannot accurately control the amount and width of lime spread, resulting in uneven and inaccurate construction lines; they lack an effective width adjustment mechanism, making it difficult to adapt to the needs of different construction widths. These problems seriously affect the accuracy of the construction baseline and the overall construction quality. Especially in large-scale road projects, the line-laying deviation will be continuously amplified as construction progresses, eventually leading to quality problems such as substandard road surface smoothness. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a line-spreading vehicle for controlling the width of road construction.

[0005] This utility model is achieved through the following technical solution:

[0006] This application provides a road construction width control line spreading vehicle, including a mobile support frame and a material box installed on the upper part. The material box has a material spreading impeller rotatably supported by a rotating shaft at the bottom outlet. The material spreading impeller includes multiple impeller short sections assembled on the rotating shaft. Any number of impeller short sections can be fixed to the rotating shaft by a plug-in limiting mechanism to adjust the line spreading width. The outer side of the rotating shaft is driven by a chain drive to the mobile wheel support shaft at the lower part of the mobile support frame.

[0007] Furthermore, this application also proposes that the insertion limiting mechanism includes an insertion transmission mechanism disposed on one side of the material spreading impeller, and a limiting mechanism disposed on the other side of the insertion limiting mechanism.

[0008] Furthermore, this application also proposes that the plug-in transmission mechanism includes a transmission rod screwed to the outermost impeller section fixed to the rotating shaft, the transmission rod being able to be inserted into a transmission hole opened on the impeller section.

[0009] Furthermore, this application also proposes that the limiting mechanism includes a fixing rod screwed to the shaft support lug, the fixing rod being able to be inserted into a fixing hole opened on the impeller short section.

[0010] Furthermore, this application also proposes that the transmission rod and the fixed rod are screwed together with a locking nut, and a fixing block is fixed on the rotating shaft to restrict the left and right movement of the impeller section.

[0011] Furthermore, this application also proposes that a guide laser is installed at the front end of the mobile support frame and a pusher is installed at the rear end of the mobile support frame.

[0012] Compared with existing technologies, the advantages of this utility model are: by setting up a mobile spreading trolley and setting an adjustable impeller short section structure and plug-in limiting mechanism at the bottom of the material box of the spreading trolley, the present utility model can flexibly control the spreading width, solve the problem that traditional spreading trolleys cannot accurately control the width, and has the advantages of accurately controlling the spreading width, facilitating quick disassembly and maintenance, and improving construction efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is another schematic diagram of the utility model;

[0015] Figure 3 yes Figure 2 Enlarged view of a local structure in the diagram;

[0016] Figure 4 This is a schematic diagram of the impeller structure of this utility model;

[0017] In the diagram: 1. Movable support frame; 2. Movable wheel; 3. Push handle; 4. Material box; 41. Discharge port; 5. Spreading impeller; 6. Rotating shaft; 7. Chain drive; 8. Impeller short section; 81. Transmission hole; 82. Fixing hole; 9. Transmission rod; 10. Locking nut; 11. Fixing rod; 12. Guide laser. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0019] like Figure 1-4 As shown, this application proposes a road construction width control line spreading vehicle, including a movable support frame and a material box mounted on the upper part. A spreading impeller is rotatably supported at the discharge port at the bottom of the material box via a rotating shaft. The spreading impeller includes multiple impeller sections assembled on the rotating shaft. Any number of impeller sections can be fixed to the rotating shaft via a plug-in limiting mechanism to adjust the spreading width. The outer side of the rotating shaft is driven by a chain drive to the movable wheel support shaft at the lower part of the movable support frame.

[0020] The mobile support frame can be a steel frame structure with casters at the bottom for overall mobility. The material hopper is an open-top container for holding construction materials such as lime. The discharge port is located at the bottom of the hopper, and its opening size can be adjusted according to actual needs. The rotating shaft is located below the discharge port and is supported by bearings for rotation. The material spreading impeller consists of multiple impeller sections, which can be made of plastic or metal, and have evenly distributed blades on their outer circumference. The chain drive mechanism includes sprockets mounted on the rotating shaft and the support shaft of the casters, and power is transmitted through a chain connection.

[0021] This technical solution utilizes a modularly designed spreading impeller structure, allowing for flexible adjustment of the spreading width according to actual construction needs. The assembly method of the impeller short sections enables stepless adjustment of the spreading width, solving the problem of fixed spreading width in traditional equipment. A plug-in limiting mechanism ensures the stability of the impeller short sections during rotation, preventing axial movement. A chain drive mechanism converts the rotation of the moving wheels into the rotational motion of the spreading impeller, achieving automatic spreading. Compared to traditional manual spreading methods, this equipment significantly improves construction efficiency and ensures uniform and accurate spreading.

[0022] Furthermore, this application also proposes that the insertion and limiting mechanism of the sprinkling vehicle includes an insertion transmission mechanism disposed on one side of the sprinkling impeller, and a limiting mechanism disposed on the other side of the insertion and limiting mechanism.

[0023] Specifically, the plug-in transmission mechanism achieves synchronous rotation of the impeller short section and the shaft by engaging the transmission rod with the transmission hole of the impeller short section. The limiting mechanism ensures the axial position of the impeller short section by engaging the fixing rod with the fixing hole. The locking nut is used to further tighten the transmission rod and the fixing rod to prevent loosening. The fixing block restricts the axial displacement of the impeller short section, ensuring the stable operation of the spreading impeller.

[0024] Therefore, this technical solution, through the cooperation of a plug-in transmission mechanism and a limiting mechanism, achieves a reliable connection between the impeller section and the rotating shaft, while also facilitating the adjustment of the spreading width. Compared with existing technologies, this solution solves the problem of traditional spreading vehicles being unable to precisely control the spreading width, improving the uniformity and accuracy of the construction lines.

[0025] Furthermore, this application also proposes that the plug-in transmission mechanism includes a transmission rod screwed to the outermost impeller section fixed to the rotating shaft, the transmission rod being able to be inserted into a transmission hole opened on the impeller section.

[0026] Specifically, the drive rod is fixed to the outermost impeller section of the rotating shaft via a threaded connection. The diameter of the drive rod matches the inner diameter of the drive hole, allowing the drive rod to be precisely inserted into the drive hole. As a preferred embodiment, the end of the drive rod can be designed with a tapered structure for easy insertion into the drive hole. Furthermore, the drive hole can be a through-hole penetrating the impeller section.

[0027] Therefore, this technical solution achieves power transmission between the impeller section and the shaft through the insertion and connection of the transmission rod and the transmission hole. When the shaft rotates, the transmission rod drives the impeller section to rotate synchronously, thus ensuring that each impeller section of the spreading impeller can work in coordination. This design solves the problem of asynchronous transmission between different sections of the spreading impeller in the existing technology, improving the adjustment accuracy of the spreading width and the ease of operation. Compared with the traditional integral impeller, the use of split impeller sections with the insertion and connection transmission mechanism not only facilitates flexible adjustment of the spreading width according to construction needs, but also allows for individual replacement in case of partial damage, reducing maintenance costs.

[0028] Furthermore, this application also proposes that the limiting mechanism includes a fixing rod screwed to the shaft support lug, the fixing rod being able to be inserted into a fixing hole opened on the impeller short section.

[0029] Specifically, the fixing rod is fixed to the support ear plate of the rotating shaft via a threaded connection. The support ear plate serves as a fixing component of the rotating shaft, providing a mounting base for the fixing rod. The fixing hole is located on the end face of the impeller section, and its diameter matches the diameter of the fixing rod, allowing for precise insertion. The end of the fixing rod can be machined into a tapered or chamfered shape to facilitate insertion into the fixing hole. The clearance between the fixing rod and the fixing hole is controlled within the range of 0.1-0.3mm, ensuring smooth assembly while preventing impeller wobbling due to excessive clearance.

[0030] Therefore, this technical solution achieves axial positioning of the non-rotating impeller section on the shaft through the insertion and engagement of the fixing rod and the fixing hole. When it is necessary to adjust the sprinkling width, simply loosen the retracting fixing rod and rotate the transmission rod to insert it into the previously fixed impeller section. This increases the number of impeller sections. After adjustment, tighten the locking nut to complete the fixation. Compared with traditional welded or integral structures, this design solves the problem of inconvenient sprinkling width adjustment while ensuring the positional stability of the impeller section during operation, avoiding impeller section displacement caused by vibration. In specific implementation, the fixing rod can be made of stainless steel to enhance corrosion resistance, and its surface can be knurled to increase the frictional resistance with the fixing hole.

[0031] Furthermore, this application also proposes that the transmission rod and the fixed rod are screwed together with a locking nut, and a fixing block is fixed on the rotating shaft to restrict the left and right movement of the impeller section.

[0032] Specifically, the lock nut is used to secure the drive rod and the fixing rod, preventing them from loosening during operation. The fixing block is welded to the rotating shaft, and its thickness is slightly larger than the axial clearance of the impeller short section, thereby effectively limiting the axial displacement of the impeller short section. As a preferred embodiment, the fixing block is made of wear-resistant alloy steel, and its contact surface with the impeller short section can be fitted with a polytetrafluoroethylene wear-resistant gasket.

[0033] This technical solution, through the synergistic action of the locking nut and the fixing block, solves the problems of transmission rod loosening and impeller short section axial movement caused by vibration during high-speed rotation of the spreading impeller. The locking nut ensures the connection stability of the insertion limiting mechanism, while the fixing block eliminates the axial clearance of the impeller short section, thereby significantly improving the reliability and working accuracy of the spreading width adjustment mechanism. Compared with existing technologies, this structure requires less frequent maintenance and adjustment, reducing equipment failure rate while ensuring construction accuracy.

[0034] Furthermore, this application also proposes that a guide laser is installed at the front end of the mobile support frame and a pusher is installed at the rear end of the mobile support frame.

[0035] The guiding laser can be a visible light laser emitter, bolted to the front end of the mobile support frame via a fixed bracket. The laser emission direction is parallel to the axis of the spreading impeller. The pusher can be a U-shaped steel pipe welded structure, bolted to both sides of the rear end of the mobile support frame. The pusher height is adjustable to accommodate different operators. A model with a leveling function can be selected for the guiding laser to ensure the laser beam remains parallel to the ground. A non-slip rubber sleeve can be added to the pusher surface to improve operating comfort.

[0036] This technical solution, by installing a guide laser on the mobile support frame, provides operators with precise straight-line travel references, avoiding the route deviation problems caused by relying on visual estimation in traditional methods. The push handle makes equipment movement more labor-saving and convenient, allowing for operation by a single person. Specifically, the visible light spot projected by the guide laser maintains a fixed distance from the spreading impeller; the operator only needs to push along the light spot's trajectory to ensure the straightness of the spreading line. Compared with existing technologies, this solution effectively solves the problem of inaccurate route control during manual pushing, while reducing labor intensity and improving construction efficiency. As a preferred implementation, the guide laser can be connected to the mobile support frame using a quick-release structure for easy maintenance and replacement.

[0037] The implementation principle of a road construction width control line-spreading vehicle according to an embodiment of this application is as follows:

[0038] In use, lime is poured into the material bin 4. The operator pushes the pusher 3 to move the movable support frame 1 forward. When moving forward, the support shaft of the movable wheel 2 rotates, which drives the rotating shaft 6 to rotate through the chain drive 7. The rotating shaft 6 drives the outermost fixed impeller section 8 to rotate. The outermost impeller section 8 drives multiple inserted impeller sections 8 to rotate synchronously through the transmission rod 9 of the insertion transmission mechanism. The lime above the discharge port 41 of the material bin 4 is carried out by these rotating impeller sections 8 for spreading. The width of the multiple rotating impeller sections 8 is the width of the spreading line. The fixing rod 11 of the limiting mechanism limits and fixes the remaining impeller sections 8, thereby preventing them from working and spreading the material. The spreading width can be adjusted by controlling the insertion of different numbers of impeller sections 8 through the insertion transmission mechanism and the limiting mechanism respectively.

[0039] 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 claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A road construction width control line spreader comprising a mobile support frame (1) and an upper mounted material tank (4), characterized in that: The discharge port (41) at the bottom of the material box (4) is rotatably supported by a spreading impeller (5) via a rotating shaft (6). The spreading impeller (5) includes multiple impeller sections (8) assembled on the rotating shaft (6). Any number of impeller sections (8) can be fixed to the rotating shaft (6) through a plug-in limiting mechanism to adjust the spreading width. The outer side of the rotating shaft (6) is driven by the moving wheel (2) support shaft at the bottom of the moving support frame (1) via a chain drive (7).

2. A line spreading vehicle for road construction width control according to claim 1, characterized in that: The insertion limiting mechanism includes an insertion transmission mechanism disposed on one side of the spreading impeller (5), and a limiting mechanism disposed on the other side of the insertion limiting mechanism.

3. A line spreading vehicle for road construction width control according to claim 2, characterised in that: The insertion transmission mechanism includes a transmission rod (9) screwed to the impeller short section (8) fixed to the outermost side of the rotating shaft (6), and the transmission rod (9) can be inserted into the transmission hole (81) opened on the impeller short section (8).

4. A line spreading vehicle for road construction width control according to claim 2, characterized in that: The limiting mechanism includes a fixing rod (11) screwed to the supporting lug of the rotating shaft (6), and the fixing rod (11) can be inserted into a fixing hole (82) on the impeller section (8).

5. A line spreading vehicle for road construction width control according to claim 3, characterized in that: The transmission rod (9) and the fixing rod (11) are screwed together with a locking nut (10), and a fixing block is fixed on the rotating shaft (6) to restrict the left and right movement of the impeller section (8).

6. A line spreading vehicle for road construction width control according to claim 1, characterized in that: A guide laser (12) is installed at the front end of the mobile support frame (1), and a pusher (3) is installed at the rear end of the mobile support frame (1).

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