Asphalt road paving mechanism and paving method

Abstract

The embodiment of the invention provides an asphalt road paving mechanism and paving method, and relates to the technical field of road paving. The asphalt road paving mechanism comprises a moving vehicle, a mounting frame is arranged at the tail end of the moving vehicle, a storage barrel is mounted at the upper end of the mounting frame, a fixing plate is mounted on the moving vehicle on the lower side of the storage barrel, a discharging box is arranged in the fixing plate, and a receiving hopper arranged at the upper end of the discharging box corresponds to a discharging opening of the storage barrel; a pushing mechanism is installed in the discharging box and used for pushing and discharging asphalt in the discharging box. By arranging the storage barrel, the discharging box and the paving plate, a large amount of asphalt is stored through the storage barrel, after the asphalt in the discharging box is used up, the asphalt in the storage barrel can enter the discharging box, the step that a worker continuously shovels the asphalt into the discharging box is omitted, after the asphalt is discharged through the discharging box, the paving plate bulldozes the asphalt to be flat, and the working efficiency is improved. And through a series of operations, the laying efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of road paving, and in particular to an asphalt road paving mechanism and a paving method. Background Art

[0002] Asphalt pavement refers to a road surface that is paved by mixing road asphalt into mineral materials. Compared with ordinary cement concrete pavement, asphalt pavement has the characteristics of smooth surface, small driving vibration, convenient construction, and suitable for section construction of pavement. During the construction of existing asphalt pavement, it is often necessary to use a paving device to spread the asphalt flat on the ground.

[0003] For example, Chinese patent announcement number: CN115125794B discloses a road asphalt paving device, which includes a frame, a barrel for storing asphalt arranged on the frame, a discharge port for discharging asphalt at the bottom of the barrel, and a scraper assembly for cleaning the asphalt at the discharge port, the scraper assembly includes a linkage frame slidably arranged on the frame, a scraper embedded on the upper side of the linkage frame, and a driving member for driving the linkage frame to slide horizontally along the length direction of the discharge port, the top end of the scraper is slidably arranged in the discharge port, and the two sides of the scraper are respectively against the inner walls on both sides of the barrel in the width direction. The present application can clean the asphalt condensed at the discharge port of the barrel through the scraper assembly, so that the discharge port of the barrel is not easily blocked.

[0004] Traditional asphalt paving methods usually rely on manual operations, including shoveling heated asphalt materials from storage containers into a material box, and then spreading and leveling them by hand or with simple mechanical tools. This method is not only inefficient, but also labor-intensive, has a harsh working environment (high temperature operation), and is difficult to ensure the consistency of paving quality.

[0005] Due to the high temperature environment, asphalt materials are prone to sticking, especially in the discharge box, which will lead to poor material flow and affect the construction progress and quality. Summary of the invention

[0006] The present application aims to at least solve the problem in the prior art that asphalt materials are prone to sticking in high temperature environments, especially in the material box, which will lead to poor material flow and affect the construction progress and quality. To this end, the present application proposes an asphalt road paving mechanism and paving method.

[0007] To achieve the above-mentioned purpose, on the one hand, the present invention provides an asphalt road paving mechanism, including a mobile vehicle, a mounting frame is provided at the rear end of the mobile vehicle, a storage cylinder is installed at the upper end of the mounting frame, a fixing plate is installed on the mobile vehicle at the lower side of the storage cylinder, a discharge box is provided inside the fixing plate, a receiving hopper provided at the upper end of the discharge box corresponds to the discharge port of the storage cylinder, a pushing mechanism is installed in the discharge box, the pushing mechanism is used to push the asphalt in the discharge box, and a slide rail is symmetrically provided on one side of the discharge box, and a paving component is installed in the slide rail.

[0008] Furthermore, a transverse plate is provided at the discharge port of the storage cylinder, and a sealing plate 1 is slidably provided inside the transverse plate. The sealing plate 1 is moved by a cylinder 1, and the sealing plate 1 seals the discharge port of the storage cylinder.

[0009] Furthermore, the paving assembly includes a connecting rod sliding in a slide rail, one end of the connecting rod is connected to a paving plate, and outward expansion plates are provided on both sides of the paving plate.

[0010] Furthermore, a screw rod 1 is rotatably arranged in the slide rail, the screw rod 1 is threadedly connected to the connecting rod, and the screw rod 1 is driven by a motor.

[0011] Furthermore, the pushing mechanism includes a pair of screw rods 2 rotatably arranged at the upper end of the material discharge box, the two screw rods 2 are both threadedly connected to the movable plate, a cylinder 2 is installed in the movable plate, the piston end of the cylinder 2 is connected to a vertical plate, the two vertical plates are respectively connected to the two sides of the push plate, the push plate is slidably arranged inside the material discharge box, the upper ends of the two screw rods 2 are connected by a transmission member, and the transmission member is driven by a motor.

[0012] Furthermore, a through hole is provided on the push plate, and the lower end of the material receiving hopper extends to the interior of the material discharge box and passes through the through hole.

[0013] Furthermore, limit strips are provided on both sides of the push plate, and a sealing plate 2 is slidably provided between the two limit strips, and the sealing plate 2 slides through a cylinder 3.

[0014] Furthermore, the lower ends of the two screw rods 2 are connected with bevel gear 1, and the upper end of the discharge box is symmetrically provided with a positioning plate, screw rod 3 passes through the positioning plate and is threadedly connected with the positioning plate, one end of screw rod 3 is connected with bevel gear 2, bevel gear 1 and bevel gear 2 are meshed, screw rod 3 is threadedly connected with the knocking plate, and a plurality of knocking blocks are provided on one side of the knocking plate.

[0015] Furthermore, a limiting groove is provided at the upper end of the positioning plate, and the upper end of the knocking plate is slidably matched with the limiting groove.

[0016] Furthermore, in another aspect, the present invention also provides a paving method of an asphalt road paving mechanism, comprising the asphalt road paving mechanism described in any one of the above, comprising the following steps:

[0017] S1. The asphalt in the storage cylinder is discharged into the discharge box through the receiving hopper at the upper end of the discharge box. As the mobile vehicle moves, the asphalt is continuously discharged from the discharge box onto the ground to be paved. The paving assembly at the rear side of the discharge box paves the asphalt accumulated on the ground.

[0018] S2, when the asphalt in the material box is discharged in step S, the motor drives the second screw to rotate, so that the moving plate and the push plate slide downward in the material box to push the asphalt out;

[0019] S3. In step S, when screw rod 2 rotates, it drives bevel gear 1 to rotate, so that bevel gear 1 and bevel gear 2 are meshed. Bevel gear 2 drives screw rod 3 to rotate, causing the knocking plate threadedly connected to screw rod 3 to move back and forth, and the knocking block is used to knock on the discharge box.

[0020] 1. The beneficial effect of the present application is that a storage cylinder, a feed box and a paving plate are provided, and a large amount of asphalt is stored in the storage cylinder. After the asphalt in the feed box is used up, the asphalt in the storage cylinder can enter the feed box, eliminating the step of workers constantly shoveling the asphalt into the feed box, and after the feed box is unloaded, the paving plate flattens the asphalt. Through a series of operations, the paving of the asphalt is automatically completed, thereby improving the paving efficiency.

[0021] 2. The beneficial effect of the present application is that through the rotation of screw rod 2, the movable plate brings the push plate to push the asphalt in the discharge box. At the same time, combined with the push of cylinder 2, the moving distance of the push plate can be extended to prevent the asphalt from sticking in the discharge box. When screw rod 2 rotates, bevel gear 1 and bevel gear 2 are engaged, so that the knocking plate brings the knocking block to reciprocately knock on both sides of the discharge box, further preventing asphalt from sticking.

[0022] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 is a schematic diagram of the overall structure according to an embodiment of the present application;

[0025] Figure 2 is a schematic cross-plane diagram of the overall structure according to an embodiment of the present application;

[0026] Figure 3 is a partial schematic diagram of the overall structure according to an embodiment of the present application;

[0027] Figure 4 is a schematic diagram of the storage cylinder structure according to an embodiment of the present application;

[0028] Figure 5 is a schematic cross-sectional view of a material box structure according to an embodiment of the present application;

[0029] Figure 6 is a schematic diagram of the moving state of the push plate according to an embodiment of the present application;

[0030] Figure 7 is a schematic diagram of the structure of a material pushing mechanism according to an embodiment of the present application;

[0031] Figure 8 is a schematic diagram of the structure of a push plate, etc. according to an embodiment of the present application;

[0032] Fig. 9 It is a schematic top view of a tiling plate structure according to an embodiment of the present application.

[0033] icon:

[0034] 1. Mobile car; 2. Mounting frame; 3. Storage cylinder; 4. Horizontal plate; 5. Sealing plate 1; 6. Cylinder 1; 7. Fixed plate; 8. Unloading box; 9. Slide rail; 10. Screw rod 1; 11. Connecting rod; 12. Flat plate; 13. Outward expansion plate; 14. Receiving hopper; 15. Screw rod 2; 16. Mobile plate; 17. Cylinder 2; 18. Vertical plate; 19. Bevel gear 1; 20. Bevel gear 2; 21. Screw rod 3; 22. Positioning plate; 23. Limiting groove; 24. Knocking plate; 25. Knocking block; 26. Push plate; 27. Limiting strip; 28. Through hole; 29. ​​Sealing plate 2; 30. Cylinder 3; 31. Transmission parts. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0036] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] An asphalt road paving mechanism and paving method according to an embodiment of the present application will be described below with reference to the accompanying drawings.

[0044] like Figures 1 to 9 As shown, an asphalt road paving mechanism according to an embodiment of the present application includes a mobile vehicle 1, a mounting frame 2 is provided at the rear end of the mobile vehicle 1, a storage cylinder 3 is installed at the upper end of the mounting frame 2, and the storage cylinder 3 can store a large amount of asphalt.

[0045] A fixed plate 7 is installed on the mobile vehicle 1 at the lower side of the storage cylinder 3, and a discharge box 8 is arranged inside the fixed plate 7. A receiving hopper 14 arranged at the upper end of the discharge box 8 corresponds to the discharge port of the storage cylinder 3. The size of the receiving hopper 14 is larger than the size of the discharge port of the storage cylinder 3, which improves the accuracy of discharge. The discharge box 8 can receive the asphalt in the storage cylinder 3. The discharge port at the lower end of the discharge box 8 is a linear outlet, and the asphalt is discharged in a straight line.

[0046] Among them, a horizontal plate 4 is arranged at the discharge port of the storage cylinder 3, and a sealing plate 5 is slidingly arranged inside the horizontal plate 4. The sealing plate 5 usually seals the discharge port of the storage cylinder 3. When unloading, the cylinder 6 is contracted to move the sealing plate 5 to expose the discharge port for unloading.

[0047] Furthermore, a slide rail 9 is symmetrically arranged on one side of the discharge box 8, and a paving assembly is installed in the slide rail 9. The paving assembly includes a connecting rod 11 sliding in the slide rail 9, and one end of the connecting rod 11 is connected to a paving plate 12. According to the required asphalt paving height, the connecting rod 11 is slid in the slide rail 9, and the distance between the paving plate 12 and the ground is adjusted. As the mobile vehicle 1 continues to move, the paving plate 12 can push the linear asphalt to make the asphalt flat. At the same time, outward expansion plates 13 are arranged on both sides of the paving plate 12. The outward expansion plates 13 can prevent the asphalt from spreading to both sides when the paving plate 12 is pushed.

[0048] Furthermore, a screw rod 10 is rotatably arranged in the slide rail 9, the screw rod 10 is threadedly connected to the connecting rod 11, and the screw rod 10 is driven by a motor. When the screw rod 10 rotates, the connecting rod 11 can slide automatically, thereby improving the stability of the tiling board 12 when in use.

[0049] Considering that asphalt has a certain viscosity, in order to prevent the asphalt from being difficult to discharge from the discharge box 8, a pushing mechanism is installed in the discharge box 8, and the pushing mechanism is used to push the asphalt in the discharge box 8 to discharge.

[0050] like Figure 5 and Figure 6 As shown, the pushing mechanism includes a pair of screw rods 15 rotatably arranged at the upper end of the discharge box 8, the lower end of the screw rod 15 is rotatably connected to the upper end of the discharge box 8, and a fixing part is also installed on the upper end of the discharge box 8 to enhance the stability of the screw rod 15, the upper ends of the two screw rods 15 are connected by a transmission member 31, and the transmission member 31 is driven by a motor. The transmission member 31 is two pulleys respectively connected to the upper ends of the screw rod 15, and a belt mounted on the two pulleys.

[0051] Since the two screw rods 15 are both threadedly connected to the movable plate 16, a cylinder 17 is installed in the movable plate 16, and the piston end of the cylinder 17 is connected to the vertical plate 18. The two vertical plates 18 are respectively connected to the two sides of the push plate 26, and the push plate 26 is slidably arranged inside the discharge box 8. When the screw rod 15 rotates, the movable plate 16 can slide downward with the push plate 26 to push the asphalt in the discharge box 8 to discharge. When the movable plate 16 moves to the bottom of the screw rod 15, the vertical plate 18 can be pushed downward by the cylinder 17, so that the push plate 26 continues to move downward, thereby increasing the stroke of the push plate 26, effectively solving the problem of asphalt being difficult to discharge.

[0052] In order to prevent the push plate 26 from affecting the asphalt from entering the material box 8, a through hole 28 is provided on the push plate 26, and the lower end of the receiving hopper 14 extends to the inside of the material box 8 and passes through the through hole 28. When the asphalt enters the material box 8, the push plate 26 slides on the inner side of the receiving hopper 14 of the material box 8, and the asphalt passes over the push plate 26 and can directly enter the material box 8.

[0053] When the push plate 26 pushes the material, since limit strips 27 are provided on both sides of the push plate 26, a sealing plate 29 is slidably provided between the two limit strips 27, and the sealing plate 29 slides through the cylinder 30. When the screw 2 15 rotates, the push plate 26 is moved away from the receiving hopper 14, and the cylinder 30 pushes the sealing plate 29 to seal the through hole 28 to prevent the asphalt from overflowing from the through hole 28 when the push plate 26 pushes the asphalt.

[0054] Furthermore, bevel gear 19 is connected to the lower ends of the two screw rods 215, and a positioning plate 22 is symmetrically arranged at the upper end of the discharge box 8. Screw rod 3 21 penetrates the positioning plate 22 and is threadedly connected to the positioning plate 22. One end of screw rod 3 21 is connected to bevel gear 20. When screw rod 2 15 rotates, bevel gear 19 is driven to rotate. Since bevel gear 19 and bevel gear 20 are meshed, bevel gear 20 rotates with screw rod 3 21. Screw rod 3 21 is a reciprocating screw. Since screw rod 3 21 is threadedly connected to knocking plate 24, a plurality of knocking blocks 25 are arranged on one side of knocking plate 24. Therefore, knocking plate 24 and knocking blocks 25 can knock on the discharge box 8 reciprocatingly to further prevent asphalt from sticking.

[0055] When the knocking plate 24 moves, the upper end of the knocking plate 24 slides in the limiting groove 23 opened at the upper end of the positioning plate 22, thereby improving the stability of the knocking plate 24 when moving.

[0056] On the other hand, the present invention also provides a paving method of an asphalt road paving mechanism, and the operating steps are as follows:

[0057] S1, the asphalt in the storage cylinder 3 is discharged into the discharge box 8 through the receiving hopper 14 at the upper end of the discharge box 8. As the mobile vehicle 1 moves, the asphalt is continuously discharged from the discharge box 8 onto the ground to be paved. The paving assembly at the rear side of the discharge box 8 paves the asphalt accumulated on the ground;

[0058] S2, when the asphalt in the material box 8 is discharged in step S1, the motor drives the screw 2 15 to rotate, so that the moving plate 16 and the push plate 26 slide downward in the material box 8 to push the asphalt out;

[0059] S3. In step S2, while the screw rod 2 15 rotates, it drives the bevel gear 1 19 to rotate, so that the bevel gear 19 and the bevel gear 2 20 are meshed, and the bevel gear 2 20 drives the screw rod 3 21 to rotate, causing the knocking plate 24 threadedly connected to the screw rod 3 21 to move back and forth, and the knocking block 25 is used to knock the discharge box 8.

[0060] Working process: A large amount of asphalt is stored in the storage cylinder 3. With the movement of the mobile vehicle 1, when the asphalt in the discharge box 8 is used up, the asphalt in the storage cylinder 3 can enter the discharge box 8, and after the discharge box 8 is discharged, the paving plate 12 pushes the asphalt flat. When paving, through the rotation of the screw rod 15, the moving plate 16 brings the push plate 26 to push the asphalt in the discharge box 8. At the same time, combined with the push of the cylinder 17, the moving distance of the push plate 26 can be extended to prevent the asphalt from sticking in the discharge box. At the same time, when the screw rod 15 rotates, the bevel gear 19 and the bevel gear 20 are engaged, so that the knocking plate 24 brings the knocking block 25 to reciprocate and knock on both sides of the discharge box 8.

[0061] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0062] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An asphalt road paving mechanism, comprising a mobile vehicle (1), characterized in that: The rear end of the mobile vehicle (1) is provided with a mounting frame (2), the upper end of the mounting frame (2) is provided with a storage cylinder (3), a fixing plate (7) is provided on the mobile vehicle (1) below the storage cylinder (3), a material discharge box (8) is provided inside the fixing plate (7), a receiving hopper (14) provided at the upper end of the material discharge box (8) corresponds to the discharge port of the storage cylinder (3), a material pushing mechanism is provided inside the material discharge box (8), the material pushing mechanism is used to push the asphalt in the material discharge box (8) to discharge, a slide rail (9) is symmetrically provided on one side of the material discharge box (8), and a paving assembly is installed inside the slide rail (9).

2. The asphalt road paving mechanism according to claim 1, characterized in that: A transverse plate (4) is arranged at the discharge port of the storage cylinder (3), a sealing plate (5) is slidably arranged inside the transverse plate (4), the sealing plate (5) is moved by a cylinder (6), and the sealing plate (5) seals the discharge port of the storage cylinder (3).

3. The asphalt road paving mechanism according to claim 2, characterized in that: The paving assembly comprises a connecting rod (11) sliding in a slide rail (9), one end of the connecting rod (11) is connected to a paving plate (12), and both sides of the paving plate (12) are provided with outward expansion plates (13).

4. The asphalt road paving mechanism according to claim 3, characterized in that: A screw rod (10) is rotatably arranged inside the slide rail (9), the screw rod (10) is threadedly connected to the connecting rod (11), and the screw rod (10) is driven by a motor.

5. The asphalt road paving mechanism according to claim 4, characterized in that: The pushing mechanism comprises a pair of screw rods (15) rotatably arranged at the upper end of the material discharge box (8), the two screw rods (15) are both threadedly connected to the movable plate (16), a cylinder (17) is installed in the movable plate (16), the piston end of the cylinder (17) is connected to a vertical plate (18), the two vertical plates (18) are respectively connected to the two sides of the push plate (26), the push plate (26) is slidably arranged inside the material discharge box (8), the upper ends of the two screw rods (15) are connected through a transmission member (31), and the transmission member (31) is driven by a motor.

6. The asphalt road paving mechanism according to claim 5, characterized in that: The push plate (26) is provided with a through hole (28), and the lower end of the receiving hopper (14) extends to the interior of the material discharge box (8) and passes through the through hole (28).

7. The asphalt road paving mechanism according to claim 5, characterized in that: Limiting strips (27) are arranged on both sides of the push plate (26), and a sealing plate 2 (29) is slidably arranged between the two limiting strips (27), and the sealing plate 2 (29) is slidable by a cylinder 3 (30).

8. The asphalt road paving mechanism according to claim 7, characterized in that: The lower ends of the two screw rods (15) are connected to bevel gears (19), the upper end of the material discharge box (8) is symmetrically provided with positioning plates (22), screw rods (21) penetrate the positioning plates (22) and are threadedly connected to the positioning plates (22), one end of screw rods (21) is connected to bevel gears (20), bevel gears (19) and bevel gears (20) are meshed, screw rods (21) are threadedly connected to a knocking plate (24), and a plurality of knocking blocks (25) are provided on one side of the knocking plate (24).

9. The asphalt road paving mechanism according to claim 8, characterized in that: The upper end of the positioning plate (22) is provided with a limiting groove (23), and the upper end of the knocking plate (24) is slidably matched with the limiting groove (23).

10. An asphalt road paving method, comprising the asphalt road paving mechanism according to any one of claims 1 to 9, characterized in that: The steps include: S1, the asphalt in the storage cylinder (3) is discharged into the discharge box (8) through the receiving hopper (14) at the upper end of the discharge box (8), and as the mobile vehicle (1) moves, the asphalt is continuously discharged from the discharge box (8) onto the ground to be paved, and the paving assembly at the rear side of the discharge box (8) paves the asphalt accumulated on the ground; S2, when the asphalt in the discharge box (8) is discharged in step S1, the second screw rod (15) is driven by the motor to rotate, so that the moving plate (16) and the push plate (26) slide downward in the discharge box (8) to push the asphalt to be discharged; S3. In step S2, while the screw rod 2 (15) rotates, it drives the bevel gear 1 (19) to rotate, so that the bevel gear 1 (19) and the bevel gear 2 (20) are meshed, and the bevel gear 2 (20) drives the screw rod 3 (21) to rotate, so that the knocking plate (24) threadedly connected to the screw rod 3 (21) moves back and forth, and the knocking block (25) is used to knock the unloading box (8).

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