Gravel spreading device for highway construction

Abstract

The utility model relates to the technical field of road maintenance, in particular to a gravel spreading device for road construction. The device comprises a conveying assembly, a spreading frame and a grading spreading assembly, the spreading frame is detachably arranged on a driving assembly, and a moving assembly is arranged on the spreading frame; the grading spreading assembly comprises a transfer frame arranged on the spreading frame, a driven frame rotationally arranged on the spreading frame and the transfer frame, two spiral conveying blades oppositely arranged on the driven frame, two circular-truncated-cone-shaped net cylinders oppositely arranged on the transfer frame and the driven frame, and a driving assembly arranged on the spreading frame; a plurality of tiling teeth are respectively arranged at the bottom ends of the spreading frame and the bent plate; the spreading frame is provided with two guide grooves, the two guide grooves are communicated with the two circular-truncated-cone-shaped net barrels respectively, and the driving assembly is in driving connection with the driven frame. According to the utility model, larger and smaller broken hairs are laid in an up-and-down layered manner through the grading spreading assembly, so that the quality of a broken stone layer is improved.

Description

Technical Field

[0001] This utility model relates to the field of highway maintenance technology, and in particular to a gravel spreading device for highway construction. Background Technology

[0002] Synchronous chip seal technology is an economical, environmentally friendly, and high-performance highway maintenance technology. It replaces heavy manual labor with high-standard spreading uniformity, eliminating environmental pollution. It has been widely used in highway construction and highway maintenance projects. Chip spreading is an important part of the implementation of this process, and now chip spreading equipment is generally used for chip spreading.

[0003] Chinese Patent CN219772601U discloses a gravel spreading device for highway maintenance, comprising a main body, traveling wheels, a gravel spreading device, and a roller. The traveling wheels are connected to the main body, the gravel spreading device is mounted on the main body and is used to spread gravel, and the roller is rotatably connected to the main body for compacting the spread gravel. This gravel spreading device for highway maintenance solves the problem of existing technologies lacking compaction after gravel spreading, avoiding loose and disordered gravel and eliminating the need for subsequent compaction by a roller. This effectively improves work efficiency.

[0004] However, the above technical solution has the following shortcomings: the volume of crushed stone poured into the main body is often within the range that meets the user's requirements, but if crushed stone of different sizes is mixed in the spreading, the quality of the crushed stone layer will be poor. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a graded spreading component that lays larger and smaller fragments in upper and lower layers to improve the quality of the crushed stone layer.

[0006] The present invention provides a gravel spreading device for highway construction, comprising: a conveying assembly; a spreading frame detachably mounted on a driving assembly, the spreading frame having a moving assembly; and a tiered spreading assembly comprising a transfer frame mounted on the spreading frame, a driven frame rotatably mounted on the spreading frame and the transfer frame, two opposing spiral conveying blades mounted on the driven frame, two opposing frustum-shaped mesh cylinders mounted on the transfer frame and the driven frame, a secondary plate inclined below the two frustum-shaped mesh cylinders, a curved plate mounted on the spreading frame, a driving assembly mounted on the spreading frame, and multiple flat-laying teeth mounted at the bottom ends of the spreading frame and the curved plate; the spreading frame has two guide troughs, which are respectively connected to the two frustum-shaped mesh cylinders, and the driving assembly is drivenly connected to the driven frame.

[0007] Preferably, the bending plate gradually tilts from both ends, and the tilting direction is away from the drive component.

[0008] Preferably, the bottom end faces of the spreading teeth on the spreading frame are distributed above the bottom end faces of the spreading teeth on the curved plate.

[0009] Preferably, the spreading frame and the transfer frame are integrally formed.

[0010] Preferably, the drive assembly includes a motor rotatably mounted on the spreading frame, a drive pulley b mounted on the output end of the motor, a drive pulley a mounted on the driven frame, and a drive belt mounted on the drive pulley a and the drive pulley b.

[0011] Preferably, the motor is a bidirectional motor.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects:

[0013] In use, the user moves the spreading frame on the road using the conveying component, simultaneously conveying the gravel to the spreading frame. The driving component drives the driven frame to rotate, and the spiral conveying blades on the driven frame move the gravel conveyed to the transfer frame to two frustum-shaped mesh cylinders. The curved plate, in conjunction with the spreading teeth, evenly spreads the larger gravel on the ground, while the smaller gravel slides down onto the larger gravel under the action of the secondary plate. The spreading frame, in conjunction with the spreading teeth, evenly spreads the smaller gravel on top of the larger gravel, thereby improving the quality of the gravel layer structure. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0015] Figure 2 This is a cross-sectional view of an embodiment of the present utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the graded spreading component in an embodiment of this utility model.

[0017] Reference numerals: 1. Conveying assembly; 2. Spreading frame; 21. Spreading frame section; 211. Guide chute; 22. Feeding frame section; 3. Moving assembly; 4. Transfer frame; 5. Driven frame; 6. Drive pulley a; 7. Motor; 8. Drive pulley b; 9. Spiral conveyor blade; 10. Frustum-shaped mesh cylinder; 11. Secondary plate; 12. Bending plate; 13. Flat laying teeth. Detailed Implementation

[0018] Example 1

[0019] like Figures 1-3As shown in this embodiment, a gravel spreading device for highway construction includes a conveying assembly 1, a spreading frame 2, and a grading spreading assembly. The spreading frame 2 is detachably mounted on the driving assembly, and a moving assembly 3 is mounted on the spreading frame 2. The grading spreading assembly includes a transfer frame 4 mounted on the spreading frame 2, a driven frame 5 rotatably mounted on the spreading frame 2 and the transfer frame 4, two spiral conveying blades 9 arranged opposite each other on the driven frame 5, and two frustum-shaped mesh cylinders 10 arranged opposite each other on the transfer frame 4 and the driven frame 5. The secondary plate 11 is inclinedly arranged below the two frustum-shaped mesh cylinders 10, the curved plate 12 is arranged on the spreading frame 2, the driving assembly is arranged on the spreading frame 2, and multiple spreading teeth 13 are arranged at the bottom of the spreading frame 2 and the curved plate 12 respectively; the spreading frame 2 has two material guide grooves 211, which are respectively connected to the two frustum-shaped mesh cylinders 10, and the driving assembly is drivenly connected to the driven frame 5. The spreading frame 2 includes a spreading frame part 21 and a feeding frame part 22 that are connected to each other, and the feeding frame part 22 is connected to the transfer frame 4.

[0020] In this embodiment, the user uses a conveying assembly to move the spreader 2 on the road, simultaneously conveying the gravel to the spreader 2. The driving assembly drives the driven frame 5 to rotate, and the spiral conveying blades 9 on the driven frame 5 move the gravel conveyed to the transfer frame 4 to the two frustum-shaped mesh cylinders 10. The driven frame 5 drives the two frustum-shaped mesh cylinders 10 to rotate, allowing the gravel to fall from the gaps in the frustum-shaped mesh cylinders 10 onto the secondary plate 11. Gravel that cannot pass through the gaps will slide down to the guide chute 211 under its own weight and fall to the ground. The curved plate 12, in conjunction with the spreading teeth 13, will evenly spread the larger gravel on the ground, while the smaller gravel will slide down on top of the larger gravel under the action of the secondary plate 11. The spreader 2, in conjunction with the spreading teeth 13, evenly spreads the smaller gravel on top of the larger gravel, thereby improving the quality of the gravel layer structure.

[0021] Example 2

[0022] like Figures 1-3 As shown, this embodiment proposes a gravel spreading device for highway construction. Compared to Embodiment 1, in this embodiment, the curved plate 12 gradually tilts from both ends, and the tilting direction is away from the drive component. The bottom end faces of the spreading teeth 13 on the spreading frame 2 are distributed above the bottom end faces of the spreading teeth 13 on the curved plate 12. The spreading frame 2 and the transfer frame 4 are integrally formed.

[0023] In this embodiment, when the larger gravel falls to the ground, it will be pushed from both ends to the middle under the action of the bending plate 12. During the pushing process, the paving teeth 13 will distribute the gravel more evenly, so as to ensure the quality of the gravel paving. When the larger and smaller gravel are laid separately, the paving teeth 13 distributed on the two planes will only contact the gravel of the corresponding size, so as to avoid damage to the already laid gravel.

[0024] Example 3

[0025] like Figures 1-3 As shown in this embodiment, a gravel spreading device for highway construction is proposed. Compared with Embodiment 1, in this embodiment, the driving component includes a motor 7 rotatably mounted on the spreading frame 2, a transmission pulley b8 mounted on the output end of the motor 7, a transmission pulley a6 mounted on the driven frame 5, and a transmission belt mounted on the transmission pulley a6 and the transmission pulley b8. The motor 7 is a bidirectional motor.

[0026] In this embodiment, the user drives the transmission pulley b8 to rotate via the motor 7. The transmission pulley b8 drives the transmission pulley a6 to rotate via the transmission belt. When the spiral conveyor blade 9 is conveying crushed stone, some of the crushed stone will get stuck between the spiral conveyor blade 9 and the spreading frame 2 and the transfer frame 4, thereby restricting the rotation of the spiral conveyor blade 9. The user can drive the spiral conveyor blade 9 to rotate in the opposite direction via a bidirectional motor, thereby avoiding damage to the spiral conveyor blade 9 during forced rotation.

[0027] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A stone spreading device for road construction, characterized in that, The utility model relates to a kind of transport components (1);Including: Delivery assembly (1); Spreading frame (2) is detachably arranged on the driving assembly, and moving assembly (3) is arranged on the spreading frame (2); Graded spreading assembly, including transfer frame (4) arranged on spreading frame (2), driven frame (5) rotationally arranged on spreading frame (2) and transfer frame (4), two spiral conveying blades (9) oppositely arranged on driven frame (5), circular cone-shaped net cylinder (10) oppositely arranged on transfer frame (4) and driven frame (5), secondary plate (11) obliquely arranged below two circular cone-shaped net cylinders (10), curved plate (12) arranged on spreading frame (2), driving assembly arranged on spreading frame (2), and multiple flat teeth (13) are arranged on spreading frame (2) and curved plate (12) bottom end respectively;Spreading frame (2) has two material guide grooves (211), two material guide grooves are communicated with two circular cone-shaped net cylinders (10) respectively, and driving assembly is drivingly connected with driven frame (5).

2. A highway construction stone spreading device according to claim 1, characterised in that Curved plate (12) is gradually inclined towards gradually from both ends, and the direction of inclination is the direction away from driving assembly.

3. A highway construction stone spreading device according to claim 1, wherein The bottom end surface of flat tooth (13) on spreading frame (2) is distributed above the bottom end surface of flat tooth (13) of curved plate (12).

4. A highway construction stone spreading device according to claim 1, wherein Spreading frame (2) and transfer frame (4) are integrally formed.

5. A highway construction stone spreading device according to claim 1, wherein Driving assembly includes motor (7) rotationally arranged on spreading frame (2), transmission belt pulley b (8) arranged on the output end of motor (7), transmission belt pulley a (6) arranged on driven frame (5), and transmission belt arranged on transmission belt pulley a (6) and transmission belt pulley b (8).

6. A highway construction stone spreading device according to claim 5, wherein Motor (7) is bidirectional motor.

Images