A device for suppressing weeds and covering the film for alfalfa planting

Abstract

This utility model relates to the field of alfalfa planting technology. Specifically, it is a weed-suppressing mulching device for alfalfa planting, including a frame with wheels rotatably connected to the bottom of the frame. It also includes a rotating shaft rotatably connected to the inner side of the frame, a limiting sleeve slidably connected to the outer side of the rotating shaft, a compression spring fixedly connected to the outer side of the limiting sleeve, a roller inserted into the inner side of the limiting sleeve, and a plastic film fixedly connected to the outer side of the roller. The device uses a pressure roller to ensure close contact between the plastic film and the soil, applying a certain pre-pressure to the plastic film to ensure it adheres tightly to the ground, avoiding wrinkles or air pockets. Simultaneously, through the cooperation of bevel gears and bevel gears, a bucket scoops up soil and gradually flips it upwards, finally spreading it onto the two edges of the plastic film, thus securing the plastic film with soil on both sides and preventing it from being lifted by wind or other external forces. This completes the weed-suppressing mulching operation for the alfalfa planting plot.

Description

Technical Field

[0001] This utility model relates to the field of alfalfa planting technology, specifically to a weed-suppressing mulching device for alfalfa planting. Background Technology

[0002] In the process of large-scale alfalfa cultivation, in order to suppress weed growth, reduce soil moisture evaporation, increase soil temperature, and ensure the healthy growth of alfalfa seedlings, it is usually necessary to carry out mulching operations after sowing. Therefore, weed suppression mulching devices have become one of the key equipment in alfalfa cultivation.

[0003] In existing technologies, traditional soil covering mechanisms mostly adopt static soil shovel structures, which rely solely on the thrust of the device when it moves to push the soil to both sides of the mulch film. This easily leads to uneven soil accumulation, resulting in the soil not being firmly pressed at the edges of the mulch film. Under the action of wind or external forces during field operations, the soil is easily lifted, affecting the weed suppression and water retention effects. Not only is it necessary to manually press the soil again, but the displacement of the mulch film may also expose alfalfa seedlings to harsh environments. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a weed-suppressing mulching device for alfalfa planting, which solves the problem that existing technologies are easily lifted by wind or external forces during field operations after mulching.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a weed-suppressing mulching device for alfalfa planting, comprising a frame, with wheels rotatably connected to the bottom of the frame, and further comprising: a rotating shaft rotatably connected to the inner side of the frame, a limiting sleeve slidably connected to the outer side of the rotating shaft, a compression spring fixedly connected to the outer side of the limiting sleeve, a roller inserted into the inner side of the limiting sleeve, and mulch film fixedly connected to the outer side of the roller; a guide frame fixedly connected to the top of the frame, a threaded rod rotatably connected to the inner side of the guide frame, and a soil covering component slidably connected to the outer wall of the guide frame; the frame is moved by a traction device, and the wheels roll on the ground accordingly, providing support and guidance for the overall movement of the device;

[0006] The soil covering assembly includes a sliding frame, a protective shell fixedly connected to the bottom of the sliding frame, a pressure roller rotatably connected to the inner side of the protective shell, a rotating frame rotatably connected to the side of the protective shell away from the pressure roller, and a bucket fixedly connected to the outer side of the rotating frame. The outer wall of the pressure roller is in close contact with the upper surface of the mulch film, which can apply a certain pre-pressure to the mulch film to ensure that the mulch film can fit tightly to the ground. When the bucket rotates, it will scoop up the soil and gradually turn it upward, and finally spread it on both sides of the mulch film, thereby fixing the soil on both sides of the mulch film.

[0007] Preferably, the end of the compression spring away from the limiting sleeve is fixedly connected to the outer side of the rotating shaft, and the inner wall of the sliding frame is slidably connected to the outer wall of the guide frame. The compression spring can make the groove reserved on the inner side of the limiting sleeve precisely engage with the protrusions on both sides of the drum. The axial displacement of the drum is limited by the cooperation between the groove and the protrusions, while the rotating shaft provides radial support for the drum.

[0008] Preferably, the inner wall of the sliding frame is threadedly connected to the outer wall of the threaded rod, and the outer wall of the sliding frame is slidably connected to the inner wall of the frame. Under the rotation of the threaded rod, the sliding frame in the soil covering assembly drives the protective shell and the pressure roller to move downward synchronously.

[0009] Preferably, bevel gears are fixedly connected to both ends of the pressure roller, and a bevel gear is fixedly connected to the outer side of the rotating frame. The bevel gear meshes with the bevel gear. When the pressure roller rotates, the rotation of the bevel gear will drive the bevel gear to rotate, thereby causing the rotating frame to drive the bucket to rotate together.

[0010] Preferably, the buckets are arranged in a ring along the central axis of the rotating frame, and the bucket walls are provided with drag-reducing grooves. The drag-reducing grooves can reduce the contact area between the soil and the inner wall of the bucket during the process of the bucket being inserted into and scooping up the soil, thereby reducing the resistance of the soil to the bucket.

[0011] The beneficial effects of this utility model are as follows:

[0012] (I) This device uses a limiting sleeve. The operator manually pushes the limiting sleeve to slide along the outside of the rotating shaft, causing the compression spring to elastically deform and contract, reserving sufficient installation space to accommodate the roll. Then, the roll with the mulch film is placed in the reserved space, ensuring that the central axis of the roll is completely aligned with the central axis of the rotating shaft. After that, the limiting sleeve is released to complete the stable fixation of the roll, ensuring that the roll can rotate smoothly around the rotating shaft during the subsequent film unwinding process. This allows for the quick completion of the roll installation and positioning.

[0013] (II) The device uses pressure rollers to make the mulch film and soil come into close contact and applies a certain pre-pressure to the mulch film to ensure that the mulch film can fit tightly to the ground and avoid wrinkles or air bubbles. At the same time, through the cooperation of bevel gears and bevel gears, the buckets on both sides rotate synchronously and scoop up the soil and gradually turn it upwards, spreading it evenly on both sides of the mulch film. This achieves soil pressing and fixing on both sides of the mulch film, preventing the mulch film from being lifted by wind or other external forces. Finally, the weed suppression and mulching operation of the alfalfa planting plot is completed. The drag reduction groove opened in the bucket wall can reduce the contact area between the soil and the inner wall of the bucket during the process of the bucket inserting and scooping up the soil, thereby reducing the resistance of the soil to the bucket. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the limiting sleeve of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the soil covering component of this utility model;

[0018] Figure 5 This utility model Figure 4 A schematic diagram of structure A.

[0019] In the diagram: 1. Frame; 2. Traveling wheel; 3. Axle; 4. Compression spring; 5. Limiting sleeve; 6. Drum; 7. Mulch film; 8. Guide frame; 9. Threaded rod; 10. Soil covering assembly; 101. Sliding frame; 102. Protective shell; 103. Pressure roller; 104. Bevel gear; 105. Rotating frame; 106. Bevel gear; 107. Bucket; 108. Drag reduction groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example: Please refer to Figure 1-5This utility model provides a technical solution: a weed-suppressing mulching device for alfalfa planting, including a frame 1, with a walking wheel 2 rotatably connected to the bottom of the frame 1, and further including: a rotating shaft 3 rotatably connected to the inner side of the frame 1, a limiting sleeve 5 slidably connected to the outer side of the rotating shaft 3, a compression spring 4 fixedly connected to the outer side of the limiting sleeve 5, a roller 6 inserted into the inner side of the limiting sleeve 5, and a mulch film 7 fixedly connected to the outer side of the roller 6, a guide frame 8 fixedly connected to the top of the frame 1, a threaded rod 9 rotatably connected to the inner side of the guide frame 8, and a soil covering component 10 slidably connected to the outer wall of the guide frame 8, with the end of the compression spring 4 away from the limiting sleeve 5 fixedly connected to the outer side of the rotating shaft 3, and the inner wall of the sliding frame 10 slidably connected to the outer wall of the guide frame 8. The operator manually pushes the limiting sleeve 5 to slide along the outer side of the rotating shaft 3, causing the compression spring 4 to elastically deform and contract, leaving enough installation space to accommodate the roller 6. Subsequently, the roll 6 with the plastic film 7 wound around it is placed in the reserved space, ensuring that the central axis of the roll 6 is completely aligned with the central axis of the rotating shaft 3. Then, the limiting sleeve 5 is released, and the compression spring 4 pushes the limiting sleeve 5 to slide in the opposite direction under the action of elastic restoring force until the groove reserved on the inner side of the limiting sleeve 5 is precisely engaged with the protrusions on both sides of the roll 6. The axial displacement of the roll 6 is restricted by the cooperation of the groove and the protrusions. At the same time, the rotating shaft 3 provides radial support for the roll 6, and finally the roll 6 is stably fixed, ensuring that the roll 6 can rotate smoothly around the rotating shaft 3 during the subsequent film laying process. This allows the installation and positioning of the roll 6 to be completed quickly. After the roll 6 is installed, the operator pulls the film out from the plastic film 7 on the outside of the roll 6, passes the starting end of the film under the soil covering component 10, and extends it to the designated position of the plot to be planted with alfalfa. Then, the starting end of the plastic film 7 is fixed to the ground manually to ensure that the plastic film 7 will not shift during the subsequent film covering process.

[0022] The soil covering assembly 10 includes a sliding frame 101, a protective shell 102 fixedly connected to the bottom of the sliding frame 101, a pressure roller 103 rotatably connected to the inner side of the protective shell 102, a rotating frame 105 rotatably connected to the side of the protective shell 102 away from the pressure roller 103, a bucket 107 fixedly connected to the outer side of the rotating frame 105, the inner wall of the sliding frame 101 being threadedly connected to the outer wall of the threaded rod 9, and the outer wall of the sliding frame 101 being slidably connected to the inner wall of the frame body 1, bevel gears 104 fixedly connected to both ends of the pressure roller 103, and a bevel gear 106 fixedly connected to the outer side of the rotating frame 105, the bevel gear 106 meshing with the bevel gear 104. The buckets 107 are arranged in a ring along the central axis of the rotating frame 105. The walls of the buckets 107 have drag-reducing grooves 108. A motor mounted on the top of the guide frame 8 drives the threaded rod 9 to rotate. Under the rotation of the threaded rod 9, the sliding frame 101 in the soil covering assembly 10 drives the protective shell 102 and the pressure roller 103 to move downwards synchronously until the outer wall of the pressure roller 103 is in close contact with the upper surface of the mulch film 7, applying a certain pre-pressure to ensure that the mulch film 7 is tightly adhered to the ground. This ensures that the mulch film 7 remains tightly adhered to the ground during the laying process, avoiding wrinkles or air pockets. The frame 1 is moved by a traction device (such as a tractor), and the traveling wheels 2 roll on the ground, providing support and guidance for the overall movement of the device. When the pressure roller 103 rotates, the rotation of the bevel gear 104 will drive the bevel gear 106 to rotate, which in turn causes the rotating frame 105 to drive the bucket 107 to rotate together. During the rotation, the bucket 107 will scoop up the soil and gradually turn it upwards, and finally spread it on both sides of the mulch film 7, so as to fix the soil on both sides of the mulch film 7 equally, preventing the mulch film 7 from being lifted by wind or other external forces, and finally completing the weed suppression and mulching operation of the alfalfa planting plot. The drag reduction groove 108 opened in the wall of the bucket 107 can reduce the contact area between the soil and the inner wall of the bucket 107 during the process of the bucket 107 inserting and scooping up the soil, and reduce the resistance of the soil to the bucket 107.

[0023] Working principle: During use, the operator manually pushes the limiting sleeve 5, causing it to slide along the outside of the rotating shaft 3. This causes the compression spring 4 to elastically deform and contract, reserving sufficient installation space to accommodate the roll 6. Then, the roll 6, with the mulch film 7 wound around it, is placed in the reserved space, ensuring that the central axis of the roll 6 is completely aligned with the central axis of the rotating shaft 3. Next, the limiting sleeve 5 is released, and the compression spring 4, under the action of elastic restoring force, pushes the limiting sleeve 5 to slide in the opposite direction until the groove reserved on the inner side of the limiting sleeve 5 precisely engages with the protrusions on both sides of the roll 6. The axial displacement of the roll 6 is restricted by the cooperation of the groove and the protrusions, while the rotating shaft 3 provides radial support for the roll 6. This ultimately completes the stable fixing of the roll 6, ensuring that the roll 6 can rotate smoothly around the rotating shaft 3 during the subsequent film unwinding process. This allows for the rapid installation and positioning of the roll 6. After the installation of roll 6 is completed, the operator pulls the film from the outer side of roll 6 and passes the starting end of the film under the pressure roller 103, extending it to the designated position of the plot to be planted with alfalfa. Then, the starting end of the film 7 is manually fixed to the ground to ensure that the film 7 will not shift during the subsequent mulching process.

[0024] The threaded rod 9, driven by a motor mounted on top of the guide frame 8, rotates. Under the rotation of the threaded rod 9, the sliding frame 101 in the soil covering assembly 10 drives the protective shell 102 and the pressure roller 103 to move downwards synchronously until the outer wall of the pressure roller 103 is in close contact with the upper surface of the mulch film 7, applying a certain pre-pressure to the mulch film 7 to ensure that the mulch film 7 can be tightly adhered to the ground. This ensures that the mulch film 7 remains tightly adhered to the ground during the laying process, avoiding wrinkles or air pockets. The frame 1 is moved by a traction device (such as a tractor), and the traveling wheels 2 roll on the ground, providing support and guidance for the overall movement of the device.

[0025] When the pressure roller 103 rotates, the rotation of the bevel gear 104 will drive the bevel gear 106 to rotate, which in turn causes the rotating frame 105 to drive the bucket 107 to rotate together. During the rotation, the bucket 107 will scoop up the soil and gradually turn it upwards, and finally spread it on both sides of the mulch film 7, so as to fix the soil on both sides of the mulch film 7 equally, preventing the mulch film 7 from being lifted by wind or other external forces, and finally completing the weed suppression and mulching operation of the alfalfa planting plot. The drag reduction groove 108 opened in the wall of the bucket 107 can reduce the contact area between the soil and the inner wall of the bucket 107 during the process of the bucket 107 inserting and scooping up the soil, and reduce the resistance of the soil to the bucket 107.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A weed-suppressing mulching device for alfalfa planting, comprising a frame (1), wherein the bottom of the frame (1) is rotatably connected to wheels (2), characterized in that, Also includes: The inner side of the frame (1) is rotatably connected to a rotating shaft (3), the outer side of the rotating shaft (3) is slidably connected to a limiting sleeve (5), the outer side of the limiting sleeve (5) is fixedly connected to a compression spring (4), the inner side of the limiting sleeve (5) is inserted with a roller (6), the outer side of the roller (6) is fixedly connected to a ground film (7), the top of the frame (1) is fixedly connected to a guide frame (8), the inner side of the guide frame (8) is rotatably connected to a threaded rod (9), and the outer wall of the guide frame (8) is slidably connected to a soil covering component (10). The soil covering assembly (10) includes a sliding frame (101), a protective shell (102) is fixedly connected to the bottom of the sliding frame (101), a pressure roller (103) is rotatably connected to the inner side of the protective shell (102), a rotating frame (105) is rotatably connected to the side of the protective shell (102) away from the pressure roller (103), and a bucket (107) is fixedly connected to the outer side of the rotating frame (105).

2. The alfalfa planting weed-suppressing mulching device according to claim 1, characterized in that: The end of the compression spring (4) away from the limiting sleeve (5) is fixedly connected to the outer side of the rotating shaft (3), and the inner wall of the sliding frame (101) is slidably connected to the outer wall of the guide frame (8).

3. The alfalfa planting weed-suppressing mulching device according to claim 1, characterized in that: The inner wall of the sliding frame (101) is threadedly connected to the outer wall of the threaded rod (9), and the outer wall of the sliding frame (101) is slidably connected to the inner wall of the frame (1).

4. The alfalfa planting weed-suppressing mulching device according to claim 1, characterized in that: The pressure roller (103) is fixedly connected to both ends of a bevel gear (104), and the outer side of the rotating frame (105) is fixedly connected to a bevel gear (106), which meshes with the bevel gear (104).

5. The alfalfa planting weed-suppressing mulching device according to claim 1, characterized in that: The bucket (107) is arranged in a ring along the central axis of the rotating frame (105), and a drag-reducing groove (108) is provided in the wall of the bucket (107).

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