An adaptive cement paste spreading vehicle and method of use thereof

Abstract

The application discloses a self-adaptive cement paste spreading vehicle and a use method thereof, which comprises a fixing frame connected with a vehicle body, a moving block slidingly connected with the fixing frame, a second gear rack and a first gear rack slidingly connected with the moving block, a second gear and a first gear rotatingly connected with the moving block, the first gear rack and the first gear being engaged, and the second gear rack and the second gear being engaged; the first gear is fixedly connected with a first pulley, the second gear is fixedly connected with a second pulley, and a synchronous belt is hung on the first pulley and the second pulley; the first gear rack is fixedly connected with a follower plate, the follower plate is connected with the moving block through a spring, and the follower plate is further rotatingly connected with a walking wheel; the first gear rack, the moving block and the second gear rack are connected with a spray head, the moving block is connected with a material box, the material box is communicated with the spray head through a transmission pipe, and the transmission pipe is connected with a valve. The device can adaptively adjust the width and area of spreading according to the width of a road surface, reduces the waste of materials, and can effectively improve the efficiency and quality of spreading.

Description

Technical Field

[0001] This invention relates to the field of highway construction technology, specifically to an adaptive cement slurry spreader and its usage method. Background Technology

[0002] In highway pavement construction, a cement slurry bonding layer is often installed between thick water-stabilized base layers to ensure a cohesive overall effect. The cement slurry process is a relatively new technique developed in recent years to improve surface bonding between upper and lower base layers of cement-stabilized crushed stone structures in road construction, thereby enhancing overall stability.

[0003] The cement paste spreading process mainly includes two methods: manual spreading and mechanical spreading. Manual spreading involves pre-calculating the spreading area and total amount based on a pre-designed spreading volume, and then directly spreading the paste with a shovel. This method is not only inefficient and wasteful of materials, but also results in a poor working environment for operators. Mechanical spreading utilizes currently developed spreading trucks. While these devices significantly improve efficiency, the spreading width is typically not automatically adjustable. Due to variations in road width, operators find it difficult to accurately and reasonably adjust the spreading width based on changes in road surface width. Therefore, there is an urgent need for a cement paste spreading truck that can automatically adjust to the road surface width. Summary of the Invention

[0004] To address the problems existing in the prior art, an adaptive cement paste spreader and its usage method are provided.

[0005] The technical solution adopted by this invention to solve its technical problem is:

[0006] This invention proposes an adaptive cement slurry spreading vehicle, comprising a fixed frame connected to the vehicle body, a movable block slidably connected to the fixed frame, a second rack and a first rack slidably connected to the movable block, a second gear and a first gear rotatably connected to the movable block, the first rack and the first gear meshing, and the second rack and the second gear meshing; a first pulley fixedly connected to the first gear, and a second pulley fixedly connected to the second gear, with a synchronous belt mounted on the first pulley and the second pulley; a follower plate fixedly connected to the end of the first rack away from the movable block, the follower plate being connected to the movable block via a spring, and a traveling wheel rotatably connected to the follower plate; nozzles connected to the first rack, the movable block, and the second rack; a material box connected to the movable block, the material box being connected to the nozzles via a transmission pipe, and a valve connected to the transmission pipe.

[0007] Preferably, the middle part of the moving block is connected to a nozzle, and two first racks are provided and symmetrically arranged on both sides of the nozzle, and two second racks are provided and symmetrically arranged on both sides of the nozzle, with the two second racks arranged between the two first racks.

[0008] Preferably, the diameter of the first gear is twice the diameter of the second gear, the diameters of the first pulley and the second pulley are the same, and in the initial state, the distance between any adjacent nozzles is equal.

[0009] Preferably, the fixing frame is fixedly connected to a screw, the inner ring of the first pulley is provided with an internal thread, and the screw is threadedly connected to the internal thread.

[0010] Preferably, the follower plate is fixedly connected to a baffle, one end of the spring is connected to the moving block, the other end of the spring is connected to the baffle, and the spring is disposed on one side of the first rack.

[0011] Preferably, a connecting frame is fixedly connected to the upper end of the fixing frame, and the connecting frame and the vehicle body are detachably connected.

[0012] Preferably, the movable block is fixedly connected to a first guide rail and a second guide rail, the first rack is slidably connected to the first guide rail, and the second rack is slidably connected to the second guide rail.

[0013] This invention also proposes a method for using an adaptive cement slurry spreader, which includes the following steps:

[0014] S1: The vehicle body drives the fixed frame to move. The traveling wheel on one side of the follower plate contacts the curb stone on the ground. The traveling wheel moves along the side of the curb stone. The valve is opened to control the material box to work. The material in the material box is sprayed from the nozzle to the ground through the transmission pipe to complete the spreading work.

[0015] S2: When the road surface narrows, the curbstone causes the follower plate to move towards the center, compressing the spring. The follower plate then moves the first rack, which in turn drives the first gear to rotate.

[0016] S3: The first gear drives the first pulley to rotate. The first pulley drives the second pulley and the second gear to rotate via the synchronous belt. The second gear drives the second rack to move. The second rack drives the nozzles located on it to move towards the center. During this process, under the action of the screw, the first pulley drives the moving block to move towards the ground, so that several nozzles are close to the ground to carry out the spreading work.

[0017] Preferably, in step S3, the distance the nozzle on the first rack moves is twice the distance the nozzle on the second rack moves.

[0018] Preferably, in step S3, the material discharge from the hopper is reduced when the nozzle is close to the ground.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. This invention is equipped with a follower plate, and the traveling wheels on both sides of the follower plate can travel along the curb. When the road width changes, the width between the curb stones decreases. The following plate can be moved by the traveling wheels, which in turn drives the nozzles to move and the first gear to rotate through the first rack. Through the transmission of the synchronous belt, the second rack can be moved, and the nozzles on the second rack can be moved. Since the diameter of the first gear is twice the diameter of the second gear, the distance the nozzles on the first rack move is twice the distance the nozzles on the second rack move. This ensures that the distance between several nozzles remains equal, and that the distance between the nozzles is reduced by the same length, thereby realizing the adjustment of the spreading width. According to the road width, the spreading width can be adaptively adjusted, improving spreading efficiency and quality, and reducing material waste.

[0021] 2. This invention is equipped with a screw. When the first pulley rotates, because the screw and the inner ring of the first pulley are threadedly connected, the screw can drive the first pulley to rotate and move downwards, causing the moving block to move closer to the ground. This brings several nozzles closer to the ground, reducing the area to be spread. At the same time, by reducing the amount of material discharged from the hopper, the amount of material spread per unit area can be adjusted, ensuring that the thickness of the spread remains consistent, reducing material waste, and allowing the same amount of material spread per unit area even on narrower surfaces, thus improving the efficiency and quality of spreading. Attached Figure Description

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is the overall front view of the invention (after rotating 90°);

[0024] Figure 2 This is the overall side view of the invention (after rotating 90°);

[0025] Figure 3 yes Figure 1 Schematic diagram of the AA section (after rotating 90°);

[0026] Figure 4 yes Figure 1 Schematic diagram of the BB section (after rotating 90°).

[0027] Explanation of reference numerals in the attached figures:

[0028] 1 Nozzle; 2 First rack; 3 Transmission pipe; 4 First guide rail; 5 Screw; 6 First gear; 7 Second rack; 8 Second pulley; 9 Second gear; 10 Moving block; 11 Material box; 12 Synchronous belt; 13 First pulley; 14 Spring; 15 Baffle; 16 Follower plate; 17 Second guide rail; 18 Connecting frame; 19 Valve; 20 Fixing frame. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0030] like Figure 1-4 As shown, this embodiment proposes an adaptive cement paste spreading vehicle, including a fixed frame 20 connected to the vehicle body. A connecting frame 18 is fixedly connected to the upper end of the fixed frame 20. The connecting frame 18 and the vehicle body are detachably connected. Two connecting frames 18 can be provided. The connecting frames 18 are arranged parallel to the ground. The fixed frame 20 can be moved by the vehicle body to facilitate spreading.

[0031] The fixed frame 20 is slidably connected to a movable block 10, which can slide along the vertical direction of the fixed frame 20, specifically the direction perpendicular to the ground. Figure 1 This is a schematic diagram after rotating the entire structure by 90°. In actual use, the mounting bracket 20 is set parallel to the ground.

[0032] The movable block 10 is slidably connected to the second rack 7 and the first rack 2. The movable block 10 is fixedly connected to the first guide rail 4 and the second guide rail 17. The first rack 2 is slidably connected to the first guide rail 4, and the second rack 7 is slidably connected to the second guide rail 17.

[0033] The first guide rail 4 and the second guide rail 17 limit and guide the movement of the first rack 2 and the second rack 7. The rack can only slide along the length of the guide rail. The first guide rail 4 and the second guide rail 17 are both in a position that is parallel to each other with respect to the ground.

[0034] The movable block 10 is rotatably connected to the second gear 9 and the first gear 6. The first rack 2 meshes with the first gear 6, and the second rack 7 meshes with the second gear 9. The first gear 6 is fixedly connected to the first pulley 13, and the second gear 9 is fixedly connected to the second pulley 8. A synchronous belt 12 is hung on the first pulley 13 and the second pulley 8.

[0035] The first gear 6 is fixedly connected to the first pulley 13 via a connecting sleeve, and the second gear 9 is fixedly connected to the second pulley 8 via a connecting sleeve. When the first rack 2 moves, it can drive the first gear 6 to rotate, which in turn drives the first pulley 13 to rotate. This, in turn, drives the second pulley 8 to rotate via the synchronous belt 12, which in turn drives the second gear 9 to rotate, thereby causing the second rack 7 to move.

[0036] The first rack 2 is fixedly connected to a follower plate 16 at the end away from the moving block 10. The follower plate 16 is connected to the moving block 10 through a spring 14. The follower plate 16 is also rotatably connected to a traveling wheel. The traveling wheel is set in the horizontal direction and can travel along the side wall of the curb stone on the ground.

[0037] The follower plate 16 is fixedly connected to the baffle 15. One end of the spring 14 is connected to the moving block 14, and the other end of the spring 14 is connected to the baffle 15. The spring 14 is located on one side of the first rack 2. The spring 14 is used for the reset of the follower plate 16. Under the action of the spring 14, the walking wheel and the curb of the road surface are always in contact, and the vehicle can walk along the curb of the road surface.

[0038] The baffle 15 is also fixedly connected to a telescopic rod, the other end of which is connected to the moving block 10. The spring 14 is sleeved on the telescopic rod, which can keep the spring in good linearity and prevent the spring 14 from bending or other situations.

[0039] A nozzle 1 is connected to the first rack 6, the moving block 10, and the second rack 2. A material box 11 is connected to the moving block 10. The material box 11 is connected to the nozzle 1 through a transmission pipe 3. A valve 19 is connected to the transmission pipe 3.

[0040] The transmission pipe 3 is a retractable flexible hose. A water pump is installed inside the material box 11. The water pump can transport the material in the material box 11 to the nozzle 1 through the transmission pipe 3 to realize the spreading of the material. The water pump is connected to a controller.

[0041] A laser rangefinder is connected to one end of the baffle 15 near the moving block 10. The laser rangefinder can measure the distance between the baffle 15 and the moving block 10. The laser rangefinder is connected to the controller. By judging this distance, the amount of material spread can be accurately controlled. When the road surface narrows, the follower plate 16 drives the baffle 15 to move. The laser rangefinder detects the decrease in distance and transmits a corresponding signal to the controller. The controller controls the water pump to reduce the amount of material conveyed.

[0042] The middle part of the movable block 10 is connected to the nozzle 1. There are two first racks 2, which are symmetrically arranged on both sides of the nozzle 1. There are two second racks 7, which are symmetrically arranged on both sides of the nozzle 1. The two second racks 7 are both arranged between the two first racks 2.

[0043] There are five nozzles 1 in total. One nozzle is located in the middle part of the moving block 10. This nozzle only changes in height. The remaining four nozzles are distributed on the first rack 2 and the second rack 7. The nozzles 1 distributed on the rack will move with the rack.

[0044] The diameter of the first gear 6 is twice the diameter of the second gear 9. The diameters of the first pulley 13 and the second pulley 8 are the same. In the initial state, the distance between any two adjacent nozzles 1 is equal.

[0045] Since the diameter of the first gear 6 is larger, the distance that the first rack 2 moves is twice the distance that the second rack 7 moves. After the distance between the nozzle 1 on the second rack 7 and the nozzle 1 on the moving block 10 is reduced, the distance that the nozzle 1 on the first rack 2 moves needs to be twice that distance so that the distance between any adjacent nozzle 1 is still equal, and so that the distance between several nozzles 1 decreases synchronously.

[0046] The fixing frame 20 is fixedly connected with screws 5. The inner ring of the first pulley 13 has an internal thread. The screws 5 are threaded to the internal thread. There are two screws 5 in total, which are located at both ends of the fixing frame 20. The two first pulleys 13 are respectively engaged with the two screws 5.

[0047] The first gear 6 is fixedly connected to the first pulley 13 via a connecting sleeve. A cavity is provided inside the connecting sleeve, and the diameter of the cavity is larger than the diameter of the screw 5. When the first pulley 13 rotates, the inner ring of the first pulley 13 and the screw 5 can move the screw 5 into or out of the cavity.

[0048] Since the screw 5 is fixed, when the first pulley 13 rotates, it can rotate and move along the screw 5. Since the first gear 6 and the moving block 10 are rotatably connected, the first pulley 13 can drive the moving block 10 to slide along the fixed frame 20 through the first gear 6, thereby realizing the adjustment of the height of the nozzle 1.

[0049] This invention also proposes a method for using an adaptive cement slurry spreader, and further includes the aforementioned adaptive cement slurry spreader, comprising the following steps:

[0050] S1: The vehicle body drives the fixed frame 20 to move. The traveling wheel on one side of the follower plate 16 contacts the curb stone on the ground. The traveling wheel moves along the side of the curb stone. The valve 19 is opened to control the material box 11 to work. The material in the material box 11 is sprayed from the nozzle 1 to the ground through the transmission pipe 3 to complete the spreading work.

[0051] S2: When the road narrows, the follower plate 16 moves towards the middle under the action of the curbstone, which compresses the spring 14. The follower plate 16 drives the first rack 2 to move, and the first rack 2 drives the first gear 6 to rotate.

[0052] S3: The first gear 6 drives the first pulley 13 to rotate. The first pulley 13 drives the second pulley 8 and the second gear 9 to rotate through the synchronous belt 12. The second gear 9 drives the second rack 7 to move. The second rack 7 drives the nozzle 1 located on it to move towards the center. During this process, under the action of the screw 5, the first pulley 13 drives the moving block 10 to move towards the ground, so that several nozzles 1 are close to the ground to carry out the spreading work.

[0053] In step S2, the method by which the rope reel 18 drives the second support rod 8 to rotate includes: the rope reel 18 drives the first gear 13 to rotate, the first gear 13 drives the fourth gear 17 to rotate through the second gear 14 and the third gear 16, and the fourth gear 17 drives the second support rod 8 to rotate through the third rotating shaft 21.

[0054] In S3, the distance the nozzle moves on the first rack 2 is twice the distance the nozzle moves on the second rack 7.

[0055] In S3, when the nozzle 1 is close to the ground, the material output of the material box 11 is reduced. The specific implementation method includes: the follower plate 16 drives the baffle 15 to move closer to the moving block 10, the laser rangefinder detects that the distance between the baffle 15 and the moving block 10 has decreased, and transmits the corresponding signal to the controller. The controller controls the water pump to reduce the material conveying amount.

[0056] It should be noted that the traveling wheels on both sides of the follower plate 16 can travel along the curbstone. When the road width changes, the width between the curbstones decreases, and the follower plate 16 can be moved by the traveling wheels. In turn, the nozzle 1 can be moved and the first gear 6 can be rotated by the first rack 2. Through the transmission of the synchronous belt 12, the second rack 7 can be moved, and the nozzle 1 on the second rack 7 can be moved.

[0057] Since the diameter of the first gear 6 is twice the diameter of the second gear 9, the distance the nozzles on the first rack move is twice the distance the nozzles on the second rack move. This allows the distance between several nozzles 1 to remain equal, and the distance between nozzles 1 to be reduced by the same length, thus enabling the adjustment of the spreading width. Based on the road width, the spreading width can be adaptively adjusted, improving spreading efficiency and quality, and reducing material waste.

[0058] In addition, when the first pulley 8 rotates, since the screw 5 and the inner ring of the first pulley 13 are connected by a thread, the screw 5 can drive the first pulley 13 to rotate and move downwards, causing the moving block 10 to move closer to the ground, so that several nozzles 1 are closer to the ground, reducing the area of ​​spreading. At the same time, by reducing the amount of material discharged from the material box 11, the amount of spreading per unit area can be adjusted, so that the thickness of spreading is always consistent, reducing material waste, and ensuring that the same amount of spreading can be maintained per unit area even on narrower ground, thus improving the efficiency and quality of spreading.

[0059] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An adaptive cement paste spreading vehicle, comprising a fixed frame (20) connected to the vehicle body, characterized in that, The fixed frame (20) is slidably connected to a movable block (10), the movable block (10) is slidably connected to a second rack (7) and a first rack (2), the movable block (10) is rotatably connected to a second gear (9) and a first gear (6), the first rack (2) and the first gear (6) mesh, the second rack (7) and the second gear (9) mesh; the first gear (6) is fixedly connected to a first pulley (13), the second gear (9) is fixedly connected to a second pulley (8), the first pulley (13) and the second pulley (8) A synchronous belt (12) is hung on the top; a follower plate (16) is fixedly connected to the end of the first rack (2) away from the moving block (10), the follower plate (16) is connected to the moving block (10) through a spring (14), and the follower plate (16) is also rotatably connected to a walking wheel; a nozzle (1) is connected to the first rack (2), the moving block (10) and the second rack (7), the moving block (10) is connected to a material box (11), the material box (11) is connected to the nozzle (1) through a transmission pipe (3), and a valve (19) is connected to the transmission pipe (3); The middle part of the moving block (10) is connected to the nozzle (1). There are two first racks (2) symmetrically arranged on both sides of the nozzle (1). There are two second racks (7) symmetrically arranged on both sides of the nozzle (1). The two second racks (7) are arranged between the two first racks (2). The diameter of the first gear (6) is twice the diameter of the second gear (9), the diameters of the first pulley (13) and the second pulley (8) are the same, and in the initial state, the distance between any adjacent nozzles (1) is equal; The fixing frame (20) is fixedly connected to a screw (5), and the inner ring of the first pulley (13) is provided with an internal thread. The screw (5) is threadedly connected to the internal thread.

2. The adaptive cement paste spreader according to claim 1, characterized in that, The follower plate (16) is fixedly connected to the baffle (15), one end of the spring (14) is connected to the moving block (10), and the other end of the spring (14) is connected to the baffle (15). The spring (14) is located on one side of the first rack (2).

3. The adaptive cement paste spreader according to claim 1, characterized in that, The upper end of the fixed frame (20) is fixedly connected to the connecting frame (18), and the connecting frame (18) and the vehicle body are detachably connected.

4. The adaptive cement paste spreader according to claim 1, characterized in that, The moving block (10) is fixedly connected to a first guide rail (4) and a second guide rail (17). The first rack (2) is slidably connected to the first guide rail (4), and the second rack (7) is slidably connected to the second guide rail (17).

5. A method of using an adaptive cement paste spreader, characterized in that, The adaptive cement paste spreader according to any one of claims 1-4 includes the following steps: S1: The vehicle body drives the fixed frame (20) to move. The walking wheel on one side of the follower plate (16) contacts the curb stone on the ground. The walking wheel moves along the side of the curb stone. The valve (19) is opened to control the material box (11) to work. The material in the material box (11) is sprayed onto the ground from the nozzle (1) through the transmission pipe (3) to complete the spreading work. S2: When the road narrows, the curbstone causes the follower plate (16) to move towards the middle, compressing the spring (14). The follower plate (16) then moves the first rack (2), which in turn drives the first gear (6) to rotate. S3: The first gear (6) drives the first pulley (13) to rotate. The first pulley (13) drives the second pulley (8) and the second gear (9) to rotate through the synchronous belt (12). The second gear (9) drives the second rack (7) to move. The second rack (7) drives the nozzle (1) located on it to move towards the center. During this process, under the action of the screw (5), the first pulley (13) drives the moving block (10) to move towards the ground, so that several nozzles (1) are close to the ground and carry out the spreading work.

6. The method of using an adaptive cement paste spreader according to claim 5, characterized in that, In S3, the distance the nozzle moves on the first rack (2) is twice the distance the nozzle moves on the second rack (7).

7. The method of using an adaptive cement paste spreader according to claim 5, characterized in that, In S3, when the nozzle (1) is close to the ground, the discharge from the material box (11) is reduced at the same time.

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