Mulch laying apparatus
By designing a soil-covering mechanism for the mulch film laying equipment, soil is transferred onto the mulch film to increase counterweight, solving the problem of the mulch film being blown off by strong winds in Northwest China and achieving stable mulch film laying.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHENGDU UNIV
- Filing Date
- 2025-12-31
- Publication Date
- 2026-06-09
AI Technical Summary
In Northwest China, plastic film is easily blown away by strong winds, and existing mechanized laying equipment is insufficient to effectively increase the wind resistance of the film.
A plastic film laying device was designed, which includes a frame, a roller mechanism and a soil covering mechanism. Using soil-gathering plates, soil-retaining plates and soil-guiding components, the soil is gathered from the ground into the receiving trough and transported to the soil-guiding trough by the rotation of the walking wheels. Finally, the soil falls on the plastic film to increase the counterweight and enhance the wind resistance.
It effectively prevents the plastic film from being blown open by strong winds, improves the wind resistance of the plastic film, and enhances its stability.
Smart Images

Figure CN122162639A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of mulch film laying technology, and in particular to a mulch film laying device. Background Technology
[0002] Mulch film is a polyethylene film used to cover the ground. It is mainly transparent or black and has functions such as warming and moisture retention, improving soil structure, and preventing pests and diseases. At present, the laying of mulch film is mainly done manually, with a small part being mechanized.
[0003] In the Northwest region, where winds are strong on a daily basis, the plastic film is easily blown away by the wind after it is laid. During the laying process, a lot of soil needs to be placed on the plastic film as a counterweight to prevent it from being blown away by the wind and causing it to fail. Summary of the Invention
[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a plastic film laying device.
[0005] The objective of this invention is achieved through the following technical solution: a plastic film laying device, comprising a frame, a roller mechanism, and a soil covering mechanism. The frame is equipped with wheels on both its left and right sides. The roller mechanism is mounted on the frame and located in front of the wheels, and is used to load the plastic film. The soil covering mechanism includes soil-collecting plates, soil-retaining plates, and soil-guiding components. Two soil-collecting plates are vertically mounted on the frame and located on the outer sides of the two wheels, respectively. The surface of the soil-collecting plates forms an acute angle with the forward direction of the wheels. A plurality of soil-retaining plates are arranged in a circumferential array within the rims of the wheels. The gaps between adjacent soil-retaining plates and the rims of the wheels form a receiving groove for accommodating and transporting soil, and the receiving groove communicates with the outer side of the wheels. Two soil-guiding components are mounted on the frame and located on the inner sides of the two wheels, respectively. Each soil-guiding component has a guiding groove, one end of which extends into the rim of the wheels, and the other end extends downwards at an angle between the two wheels. When in use, this invention is moved forward by a tractor or by human pushing. During the movement, the roller mechanism lays the mulch film on the ground, while the soil covering mechanism gathers the soil near the wheels through the soil-gathering plate into the receiving trough as the mulch film laying equipment moves. The soil then enters the soil guiding trough and finally falls onto the laid mulch film through the soil guiding trough to press the mulch film down and increase its wind resistance.
[0006] In some embodiments, a plurality of retaining plates on the traveling wheel are spirally arranged along the axial direction of the traveling wheel, with the spiral direction being clockwise from the outer side to the inner side of the traveling wheel. By arranging the surfaces of the retaining plates along the spiral direction, during the travel of the traveling wheel, when a receiving groove rotates from the bottom of the traveling wheel to the middle of the traveling wheel, the receiving groove tilts, transferring the soil accumulated in the receiving groove near the outer side of the traveling wheel to the inner side of the traveling wheel, so that the soil can subsequently fall into the guide groove.
[0007] In some embodiments, the soil covering mechanism further includes an annular baffle disposed on the inner side of the wheel rim of the traveling wheel. The annular baffle is connected to the soil retaining plate and is used to close one end of the receiving groove near the inner side of the traveling wheel. The annular baffle prevents soil from falling out of the receiving groove when it moves to the inner side of the traveling wheel.
[0008] In some embodiments, the traveling wheel includes a hub, spokes, and a rim. The hub is rotatably connected to the frame via a pivot, and one end of each of the spokes is connected to the hub, while the other end is connected to the rim.
[0009] In some embodiments, one end of the spoke that connects to the rim extends through the rim to the outer edge surface of the rim. By extending the spoke to the outer edge surface of the rim, the spoke will insert into the ground when the wheel is in motion, preventing the wheel from slipping.
[0010] In some embodiments, the spokes are disposed near the outer side of the traveling wheel. This placement of the spokes near the outer side of the traveling wheel facilitates the extension of the soil guiding component into the wheel rim.
[0011] In some embodiments, the frame is provided with two auxiliary soil-collecting plates, which are located between the two traveling wheels. The location of the two auxiliary soil-collecting plates between the two traveling wheels facilitates covering the edges of the mulch film with soil.
[0012] In some embodiments, the roller mechanism includes a mulch film installation cylinder, an upper roller, a front roller, and a lower roller. The mulch film installation cylinder, upper roller, front roller, and lower roller are all arranged in parallel and are rotatably connected to the frame. The mulch film is first installed on the mulch film installation cylinder via the mulch film installation cylinder, upper roller, front roller, and lower roller, and then, guided by the upper roller and front roller, finally adheres to the ground via the lower roller.
[0013] In some embodiments, a plurality of mulch film positioning components are provided at both ends of the front roller. The mulch film positioning components are used to position the mulch film.
[0014] In some embodiments, the mulch film installation cylinder includes a cylinder body and a cylinder shaft. Support roller assemblies are respectively arranged at both ends of the mulch film installation cylinder on the frame, and both ends of the cylinder shaft are respectively placed on the two support roller assemblies. The support roller assemblies allow the mulch film installation cylinder to be placed on the frame, facilitating installation and removal by simply placing or removing the cylinder.
[0015] The present invention has the following advantages: This invention, by setting up a soil covering mechanism, uses a soil-gathering plate, a soil-retaining plate, and a soil-guiding component, along with the rotation of the traveling wheels, to transfer soil from near the traveling wheels to the wheel rims via the soil-gathering plate. The soil-retaining plate then transfers the soil from the bottom of the traveling wheels to the top of the top of the traveling wheels, and finally allows the soil to fall into the soil-guiding groove of the soil-guiding component, thus transporting the soil to the top of the laid mulch film. This increases the counterweight of the mulch film and prevents strong winds from blowing it away. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the front structure of the mulch film laying equipment of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the rear structure of the mulch film laying equipment of the present invention; In the diagram: 1. Frame; 2. Traveling wheel; 21. Wheel rim; 22. Wheel spoke; 23. Wheel hub; 31. Soil-collecting plate; 32. Soil-retaining plate; 33. Soil-guiding component; 34. Annular baffle; 4. Roller mechanism; 41. Mulch film installation cylinder; 411. Cylinder body; 412. Cylinder shaft; 42. Upper roller; 43. Front roller; 431. Mulch film positioning component; 44. Lower roller; 5. Secondary soil-collecting plate; 6. Support roller. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0018] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.
[0019] like Figures 1-3As shown, a plastic film laying device includes a frame 1, a roller mechanism 4, and a soil covering mechanism. The frame 1 has wheels 2 on both its left and right sides. The roller mechanism 4 is mounted on the frame 1 and located in front of the wheels 2, and is used to load the plastic film. The soil covering mechanism includes a soil-collecting plate 31, a soil-retaining plate 32, and a soil-guiding component 33. In this embodiment, the roller mechanism 4 is located in front of the wheels 2, allowing the laid plastic film to pass between the wheels 2 as they move.
[0020] Two soil-collecting plates 31 are vertically mounted on the frame 1 and located on the outside of the two traveling wheels 2 respectively. The surface of the soil-collecting plate 31 forms an acute angle with the forward direction of the traveling wheel 2. The bottom of the two soil-collecting plates 31 inserts into the ground when the traveling wheel 2 moves, collecting the soil on the ground. The surface of the soil-collecting plate 31 forms an acute angle with the forward direction of the traveling wheel 2. When the traveling wheel 2 moves, the soil is brought closer to the traveling wheel 2 by the action of the soil-collecting plates 31.
[0021] A plurality of retaining plates 32 are arranged in a circumferential array within the rim 21 of the traveling wheel 2. The gap between adjacent retaining plates 32 and the rim 21 of the traveling wheel 2 form a receiving groove for accommodating and transporting soil. The receiving groove is connected to the outer side of the traveling wheel 2. The retaining plates 32 are arranged in a circumferential array within the rim 21 of the traveling wheel 2. The retaining plates 32 and the rim 21 of the traveling wheel 2 form a receiving groove. Since the receiving groove is connected to the side of the traveling wheel 2 near the outer side of the mulch film laying equipment, the soil moves closer to the traveling wheel 2 under the action of the soil-collecting plate 31 and enters the receiving groove at the bottom of the traveling wheel 2.
[0022] Two soil guiding components 33 are mounted on the frame 1 and located inside the two traveling wheels 2, respectively. Each soil guiding component 33 has a soil guiding groove. One end of each soil guiding component 33 extends into the rim 21 of the traveling wheel 2, and the other end extends downwards between the two traveling wheels 2. In this embodiment, the soil guiding component 33 is inclined, with the side facing outwards from the outer side of the mulch film laying equipment and the side facing inwards from the inner side of the mulch film laying equipment. The outer end of the soil guiding component 33 extends into the rim 21 of the traveling wheel 2 without contacting the traveling wheel 2, while the inner end extends above the mulch film laid on the ground. When the traveling wheel 2 rotates, the receiving groove at the bottom of the traveling wheel 2 rotates to the top of the traveling wheel 2, and the soil in the receiving groove falls out of the receiving groove and into the soil guiding groove of the soil guiding component 33. Due to the inclined arrangement of the soil guiding component 33, the soil eventually slides down the soil guiding groove onto the mulch film, providing counterweight to the mulch film and preventing it from being blown away by strong winds.
[0023] Preferably, the plurality of retaining plates 32 on the traveling wheel 2 are spirally arranged along the axial direction of the traveling wheel 2, and the spiral direction is clockwise from the outside to the inside of the traveling wheel 2. Specifically, the surfaces of the retaining plates 32 on both traveling wheels 2 are arranged in a spiral direction, which is clockwise from the outside of the mulch film laying equipment to the inside of the mulch film laying equipment. When the traveling wheel 2 rotates forward, the retaining plates 32 at the bottom of the traveling wheel 2 rotate with the traveling wheel 2 to the rear side of the traveling wheel 2. At this time, because the surfaces of the retaining plates 32 are spirally arranged, the side of the retaining plate 32 near the inside of the mulch film laying equipment is lower, and the side of the retaining plate 32 near the outside of the mulch film laying equipment is higher, causing the retaining plate 32 to tilt. The tilting of the retaining plate 32 causes the receiving trough to tilt, thereby causing the soil in the receiving trough to be transferred from the side of the receiving trough near the outside of the mulch film laying equipment to the inside under the action of gravity. Finally, more soil falls into the soil guiding component 33, improving the soil transfer efficiency.
[0024] Preferably, the soil covering mechanism further includes an annular baffle 34, which is disposed on the inner side of the wheel rim 21 of the traveling wheel 2. The annular baffle 34 is connected to the retaining plate 32 and is used to close one end of the receiving groove near the inner side of the traveling wheel 2. Specifically, the annular baffle 34 is disposed on the side of the traveling wheel 2 near the inner side of the mulch film laying equipment and is connected to the retaining plate 32, closing one end of all the receiving grooves on the traveling wheel 2. During the rotation of the traveling wheel 2, the soil moves from the outer side of the mulch film laying equipment to the inner side within the receiving groove. The annular baffle 34 prevents the soil from sliding out of one end of the receiving groove during the movement, thereby improving the soil transfer efficiency.
[0025] Preferably, the traveling wheel 2 includes a hub 23, spokes 22, and a rim 21. The hub 23 is rotatably connected to the frame 1 via a pivot, and one end of each spoke 22 is connected to the hub 23, while the other end is connected to the rim 21. In this embodiment, the hub 23 is rotatably connected to the frame 1 via a pivot, and the rim 21 is connected to the hub 23 via spokes 22, forming a complete traveling wheel 2.
[0026] Preferably, one end of the spoke 22 connected to the rim 21 extends through the rim 21 to its outer edge. The spoke 22 extends through the rim 21, forming a protrusion on its outer edge. When the mulch film laying equipment is in use, the traveling wheel 2 rotates, and the receiving groove behind the traveling wheel 2 is always filled with soil. Under the action of gravity, the soil behind the traveling wheel 2 creates a counter-rotating torque. When the traveling wheel 2 travels on a relatively slippery surface, it may slip under the counter-rotating torque, causing soil transfer failure. By creating a protrusion on the outer edge of the rim 21, the spoke 22 is inserted into the soil during the travel of the traveling wheel 2, preventing slippage and improving soil transfer efficiency.
[0027] Preferably, the spokes 22 are located near the outer side of the traveling wheel 2. In this embodiment, specifically, the spokes 22 are located on the side of the traveling wheel 2 closest to the outer side of the mulch film laying equipment, leaving space for the inner side of the traveling wheel 2 so that one end of the soil guiding component 33 extends completely into the traveling wheel 2, thereby improving the soil transfer efficiency.
[0028] Preferably, the frame 1 is provided with two auxiliary soil-gathering plates 5, which are located between the two traveling wheels 2. Specifically, in this embodiment, both auxiliary soil-gathering plates 5 are located behind the roller mechanism 4, and the distance between the two auxiliary soil-gathering plates 5 corresponds to the width of the mulch film. Both auxiliary soil-gathering plates 5 are vertically arranged, and the surfaces of both auxiliary soil-gathering plates 5 form an acute angle with the forward direction of the mulch film laying equipment. During the use of the mulch film laying equipment, the traveling wheels 2 rotate and travel, the roller mechanism 4 lays the mulch film flat on the ground, and the auxiliary soil-gathering plates 5 behind the roller mechanism 4 gather the soil towards the space between the two auxiliary soil-gathering plates 5, pressing the soil onto the edge of the mulch film, compacting the edge of the mulch film, and increasing the wind resistance of the mulch film.
[0029] Preferably, the roller mechanism 4 includes a mulch film installation cylinder 41, an upper roller 42, a front roller 43, and a lower roller 44. The mulch film installation cylinder 41, upper roller 42, front roller 43, and lower roller 44 are all arranged in parallel, and are rotatably connected to the frame 1. Specifically, in this embodiment, the mulch film installation cylinder 41 is used to install the mulch film. The upper roller 42 is located below the mulch film installation cylinder 41, the front roller 43 is located in front of the mulch film installation cylinder 41 and the upper roller 42, and the lower roller 44 is located below the upper roller 42. During the use of the mulch film laying equipment, the mulch film is pulled out from the mulch film installation cylinder 41, first passes through the upper roller 42, then winds around the upper roller 42 and then around the front roller 43, finally passing through the lower roller 44 and adhering to the ground.
[0030] Preferably, a plurality of mulch film positioning components 431 are provided at both ends of the front roller 43. Specifically, in this embodiment, the positioning components are baffles, and a plurality of baffles are arranged in a circumferential array at both ends of the front roller 43. During the operation of the mulch film laying equipment, when the mulch film is wound through the front roller 43, the baffles keep the position of the mulch film in the middle position of the front roller 43, so that the mulch film is always in the middle position.
[0031] Preferably, the mulch film installation cylinder 41 includes a cylinder body 411 and a cylinder shaft 412. Support roller sets 6 are respectively arranged at both ends of the mulch film installation cylinder 41 on the frame 1. The two ends of the cylinder shaft 412 are respectively placed on two sets of support rollers 6. Specifically, in this embodiment, each set of support rollers 6 includes two vertically arranged support rollers 6. The support rollers 6 are rotatably connected to the frame 1 via a rotating shaft. The rotating shaft of the support rollers 6 is parallel to the rotating shaft of the mulch film installation cylinder 41. The two support rollers 6 in the same set of support rollers 6 are adjacent but not aligned on the same axis. The end of the rotating shaft of the mulch film installation cylinder 41 is placed between two adjacent support rollers 6. The two support rollers 6 provide support for the rotating shaft of the mulch film installation cylinder 41 and are in rotatable contact with the rotating shaft of the mulch film installation cylinder 41. When installing the mulch film onto the mulch film installation cylinder 41, the mulch film installation cylinder 41 can be removed simply by picking it up. After installing the mulch film onto the mulch film installation cylinder 41, the mulch film installation cylinder 41 is placed on the support roller set 6 to complete the installation of the mulch film. The support roller set 6 improves the loading efficiency of the mulch film.
[0032] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the present invention. Any person skilled in the art can make many possible variations and modifications to the technical solution of the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of the present invention without departing from the scope of the present invention are within the protection scope of the present invention.
Claims
1. A plastic film laying device, characterized in that, include: The frame (1) is provided with wheels (2) on both the left and right sides. A roller mechanism (4) is provided on the frame (1) and located in front of the walking wheel (2). The roller mechanism (4) is used to load the mulch film. The soil covering mechanism includes a soil slab (31), a soil retaining plate (32), and a soil guiding component (33). The two soil-collecting plates (31) are vertically arranged on the frame (1) and located on the outside of the two walking wheels (2), respectively. The surface of the soil-collecting plate (31) forms an acute angle with the forward direction of the walking wheel (2). A plurality of the retaining plates (32) are arranged in a circumferential array inside the rim (21) of the traveling wheel (2). The gap between adjacent retaining plates (32) and the rim (21) of the traveling wheel (2) form a receiving groove for accommodating and transporting soil. The receiving groove is connected to the outside of the traveling wheel (2). Two soil guiding components (33) are mounted on the frame (1) and located on the inner side of the two walking wheels (2), respectively. Soil guiding components (33) are provided with soil guiding grooves. One end of the soil guiding component (33) extends into the rim (21) of the walking wheel (2), and the other end extends downward at an angle between the two walking wheels (2).
2. The mulch film laying equipment according to claim 1, characterized in that, The retaining plates (32) on the walking wheel (2) are all spirally arranged along the axial direction of the walking wheel (2), and the spiral direction is clockwise from the outside to the inside of the walking wheel (2).
3. The mulch film laying equipment according to claim 1, characterized in that, The soil covering mechanism also includes an annular baffle (34), which is disposed on the inner side of the wheel rim (21) of the traveling wheel (2). The annular baffle (34) is connected to the retaining plate (32) and is used to close one end of the receiving groove near the inner side of the traveling wheel (2).
4. The mulch film laying equipment according to claim 1, characterized in that, The walking wheel (2) includes a hub (23), spokes (22) and rim (21). The hub (23) is rotatably connected to the frame (1) via a rotating shaft. One end of each spoke (22) is connected to the hub (23), and the other end is connected to the rim (21).
5. The mulch film laying equipment according to claim 4, characterized in that, One end of the spoke (22) that connects to the rim (21) extends through the rim (21) to the outer edge of the rim (21).
6. The mulch film laying equipment according to claim 4, characterized in that, The spokes (22) are positioned close to the outer side of the traveling wheel (2).
7. The mulch film laying equipment according to claim 1, characterized in that, Two auxiliary soil-collecting plates (5) are provided on the frame (1), and the two auxiliary soil-collecting plates (5) are located between the two walking wheels (2).
8. The mulch film laying equipment according to claim 1, characterized in that, The roller mechanism (4) includes a plastic film installation cylinder (41), an upper roller (42), a front roller (43), and a lower roller (44). The plastic film installation cylinder (41), the upper roller (42), the front roller (43), and the lower roller (44) are all arranged in parallel. The plastic film installation cylinder (41), the upper roller (42), the front roller (43), and the lower roller (44) are all rotatably connected to the frame (1).
9. A film mulching device according to claim 8, characterized in that, Several mulch film positioning components (431) are provided at both ends of the front roller (43).
10. A film mulching device according to claim 8, characterized in that, The mulch film installation cylinder (41) includes a cylinder body (411) and a cylinder shaft (412). Support rollers (6) are respectively provided at both ends of the mulch film installation cylinder (41) on the frame (1). The two ends of the cylinder shaft (412) are respectively placed on the two sets of support rollers (6).