A knapsack mulch applicator

Abstract

This utility model provides a backpack-type mulch film covering device, including a main frame. From left to right, the main frame is equipped with a backpack assembly, a film storage assembly, and an electrically controlled film spreading arm with adjustable pitch angle. The film spreading arm is equipped with a film guiding assembly, a film pressing component, and a soil covering assembly. A gravity sensor is also installed on the film spreading arm. The film guiding assembly includes two film guiding rollers arranged in an inverted V shape. The backpack assembly is equipped with a main control unit and a control panel. The main control unit adjusts the pitch angle of the film spreading arm based on the signal feedback from the gravity sensor. This backpack-type mulch film covering device can adapt to terrain undulations during mulching, resulting in a smoother mulch film.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically to a backpack-type mulch covering device. Background Technology

[0002] A mulching machine is a machine used for covering plastic film onto mulch. There are two types: manual mulching machines and mechanically powered mulching machines. They generally consist of a trencher, film-pressing rollers, a soil-covering device, and a frame. Currently, many publications have optimized mulching machines.

[0003] For example, utility model CN2269058Y discloses a ground covering machine that is pushed by people or pulled by animals. Its ditching plows are symmetrically installed on both sides of the front wheel. A film-laying roller support is welded to the frame frame. The film-laying roller is suspended and fixed below the frame, in front of the pressing roller, and a soil-covering roller is fixed behind the pressing roller. The machine has a simple structure, produces smooth film covering, is highly efficient and labor-saving, easy to maintain, and low in cost. It is particularly suitable for rural households contracting land and is very easy to promote.

[0004] For example, the backpack-type mulch film covering machine disclosed in utility model CN204762559U includes a frame. Above the frame, a sprinkler belt winding disc is supported by a sprinkler belt bracket. Below the frame, a roller for rolling the sprinkler belt is supported by a roller bracket. Below the frame, two sets of mulch film clamping mechanisms for holding the mulch film rolls are also supported by a mulch film bracket. Below the frame, two rollers for rolling the mulch film are also supported by a roller bracket. At the rear of the frame, two tilling plows are supported by a tilling bracket. This backpack-type mulch film covering machine can lay the mulch film and the sprinkler belt underneath in one operation, with good laying effect, saving time and labor. It is also suitable for laying mulch films of various widths, making it widely applicable.

[0005] Looking at the existing mulching machines, there are still many shortcomings that need to be improved: First, they have poor terrain adaptability and cannot meet the needs of special terrains such as terraces and slopes; Second, the flatness of the mulch film is poor, and it is easy for horizontal wrinkles to accumulate. Utility Model Content

[0006] To overcome the shortcomings of existing technologies, this utility model provides a backpack-type mulch film covering device that can adapt to the undulations of the terrain during mulching, making the mulch film smoother.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A backpack-type mulch film covering device includes a main frame. From left to right, the main frame is provided with a backpack assembly, a film storage assembly, and an electrically controlled film spreading arm with adjustable pitch angle. The film spreading arm is provided with a film guiding assembly, a film pressing component, and a soil covering assembly. The film spreading arm is also provided with a gravity sensor. The film guiding assembly includes two film guiding rollers arranged in an inverted V shape. The backpack assembly is provided with a main control unit and a control panel. The main control unit adjusts the pitch angle of the film spreading arm according to the signal feedback from the gravity sensor.

[0009] Furthermore, one end of the film spreading arm is hinged to the main frame, and an electric telescopic rod is connected between the film spreading arm and the main frame. The electric telescopic rod is electrically connected to the main control unit.

[0010] Furthermore, the membrane storage assembly includes a bearing seat and a membrane shaft, the membrane shaft being detachably connected to the bearing seat, and an electromagnetic damper that is linked to the membrane shaft is provided inside the bearing seat. The electromagnetic damper is electrically connected to the main control unit.

[0011] Furthermore, the film pressing component and the film spreading arm are slidably connected in the height direction.

[0012] Furthermore, a sliding rod is connected to the top of the film pressing component, a sliding sleeve is provided on the film spreading arm, the sliding rod passes through the sliding sleeve, and a locking bolt is provided on the side wall of the sliding sleeve.

[0013] Furthermore, the pressing component includes a steel sheet and a plurality of rollers, the plurality of rollers being disposed on the bottom of the steel sheet with the same orientation.

[0014] Furthermore, the soil covering assembly is slidably connected to the film spreading arm in the height direction, and a hydraulic cylinder is provided between the soil covering assembly and the film spreading arm.

[0015] Furthermore, the soil covering assembly includes a plow blade and a compaction wheel connected by the connecting shaft, the connecting shaft being inclined relative to the film spreading arm so that the plow blade is located behind the compaction wheel.

[0016] Furthermore, the surface of the press wheel is provided with spiral patterns.

[0017] Furthermore, the carrying assembly includes a carrying frame, on which shoulder straps and a waist belt are provided.

[0018] Compared with the prior art, the present invention has the following beneficial technical effects:

[0019] The backpack-type mulch film covering device of this utility model is equipped with an adjustable pitch angle film spreading arm. The main control unit can adapt to the undulation of the terrain and adjust the film spreading arm in real time according to the feedback of the gravity sensor, thereby adjusting the spreading angle of the mulch film. At the same time, the mulch film is spread out by the V-shaped guide roller, so that the film surface tension is uniform, avoiding wrinkles and making the mulch film covering more flat. Attached Figure Description

[0020] Figure 1 This is a structural diagram of a backpack-type mulch film covering device according to this utility model.

[0021] Figure 2 This is a cross-sectional view of the membrane storage module of this utility model.

[0022] Figure 3 This is a structural diagram of the pressure-pressing component of this utility model.

[0023] The components include: 1. Main frame; 2. Backing assembly; 21. Backing frame; 22. Shoulder straps; 23. Waist belt; 3. Film storage assembly; 31. Shaft seat; 32. Film shaft; 33. Electromagnetic damper; 4. Film spreading arm; 5. Electric telescopic rod; 6. Film guiding assembly; 7. Film pressing component; 71. Steel sheet; 72. Roller; 73. Sliding rod; 74. Sliding sleeve; 75. Locking bolt; 8. Soil covering assembly; 81. Connecting shaft; 82. Plow blade; 83. Pressing wheel; 9. Hydraulic cylinder. Detailed Implementation

[0024] Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] like Figure 1-3 As shown, a backpack-type mulch film covering device includes a main frame 1, on which a backpack assembly 2, a film storage assembly 3, and an electronically controlled film spreading arm 4 with adjustable pitch angle are arranged sequentially from left to right.

[0026] The carrying assembly 2 includes a carrying frame 21, on which shoulder straps 22 and a waist belt 23 are provided. The operator can manually pull the equipment forward using the carrying assembly 2. The shoulder straps 22 and waist belt 23 form a three-point force-bearing structure, which distributes the force evenly and makes it more comfortable to wear. The carrying frame 21 is equipped with a main control unit and a control panel.

[0027] The film storage assembly 3 includes a bearing seat 31 and a film shaft 32. The film shaft 32 is detachably connected to the bearing seat 31. The bearing seat 31 is equipped with an electromagnetic damper 33 that is linked to the film shaft 32. The electromagnetic damper 33 is electrically connected to the main control unit. The film shaft 32 is used to connect the film roll. The rotation speed of the film shaft 32 can be controlled by the electromagnetic damper 33, thereby achieving controllability of the film release speed and preventing the film from being overstretched.

[0028] One end of the film-spreading arm 4 is hinged to the main frame 1. An electric telescopic rod 5 connects the film-spreading arm 4 and the main frame 1. The electric telescopic rod 5 is electrically connected to the main control unit to achieve electric control adjustment of the pitch angle of the film-spreading arm 4. The film-spreading arm 4 is sequentially equipped with a film guiding assembly 6, a film pressing component 7, and a soil covering assembly 8. The film-spreading arm 4 is also equipped with a gravity sensor. The main control unit adjusts the pitch angle of the film-spreading arm 4 based on the signal feedback from the gravity sensor. Since the mulch film covers the ground after passing through the film guiding assembly 6, adjusting the pitch angle of the film-spreading arm 4 can adjust the film-spreading angle, achieving adaptive adaptation to terrain undulations and maintaining the flatness of the film surface.

[0029] The film guiding assembly 6 includes two film guiding rollers arranged in an inverted V-shape. The film guiding rollers are at a 15-degree angle to the horizontal plane. The surface of the film guiding rollers is provided with anti-slip texture. After the mulch film passes through the V-shaped film guiding rollers, it can unfold in both directions. The angled design makes the lateral tension of the film surface uniform, thereby eliminating lateral wrinkles in the mulch film.

[0030] The film pressing component 7 is slidably connected to the film spreading arm 4 in the height direction. By adjusting the height of the film pressing component 7, the pressure of the film pressing component 7 on the mulch film can be adjusted. Specifically, the film pressing component 7 includes a steel sheet 71 and multiple rollers 72, with the multiple rollers 72 arranged in the same direction at the bottom of the steel sheet 71. A sliding rod 73 is connected to the top of the steel sheet 71, and a sliding sleeve 74 is provided on the film spreading arm 4. The sliding rod 73 passes through the sliding sleeve 74, and a locking bolt 75 is provided on the side wall of the sliding sleeve 74.

[0031] The soil covering component 8 and the film spreading arm 4 are slidably connected in the height direction, and a hydraulic cylinder 9 is provided between the soil covering component 8 and the film spreading arm 4. Through the action of the hydraulic cylinder 9, the soil covering component 8 can be pressurized to make the mulch film more firm and prevent the soil covering from being washed away by rainwater.

[0032] The soil covering assembly 8 includes a plow blade 82 and a compaction wheel 83 connected by a connecting shaft 8. The connecting shaft 8 is inclined relative to the film spreading arm 4 so that the plow blade 82 is located behind the compaction wheel 83. This allows the plow blade 82 to turn the soil first, and then the compaction wheel 83 to compact the turned soil. The surface of the compaction wheel 83 is provided with spiral patterns, which can guide the turned soil to evenly cover the edge of the mulch film.

[0033] The method of using the backpack-type mulch film covering device of this utility model is as follows:

[0034] The plastic film is installed on the film storage assembly 3, then pulled out and passed over the film guide assembly 6. The film pressing component 7 presses the plastic film onto the ground. The operator carries the equipment on their back using the carrying assembly 2. The gravity sensor is activated to detect the current slope, and the main control unit automatically adjusts the pitch angle of the film spreading arm 4 according to the current slope. As the operator walks forward, the V-shaped film guide roller continuously spreads the plastic film. During the movement, the film spreading arm 4 adjusts its pitch angle according to the real-time terrain undulations. The plow blade 82 turns over the soil, and the compaction wheel 83 guides the soil to the edge of the plastic film while compacting the soil. The main control unit can adjust the pressure of the hydraulic cylinder 9 in real time according to the terrain undulations.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A backpack-type mulch film covering device, characterized in that: The system includes a main frame, on which, from left to right, are arranged a carrying assembly, a film storage assembly, and an electrically controlled film spreading arm with adjustable pitch angle. The film spreading arm is provided with a film guiding assembly, a film pressing component, and a soil covering assembly. The film spreading arm is also equipped with a gravity sensor. The film guiding assembly includes two film guiding rollers arranged in an inverted V shape. The carrying assembly is equipped with a main control unit and a control panel. The main control unit adjusts the pitch angle of the film spreading arm based on the signal feedback from the gravity sensor.

2. The backpack-type mulch film covering device according to claim 1, characterized in that: One end of the film spreading arm is hinged to the main frame, and an electric telescopic rod is connected between the film spreading arm and the main frame. The electric telescopic rod is electrically connected to the main control unit.

3. The backpack-type mulch film covering device according to claim 1 or 2, characterized in that: The membrane storage assembly includes a bearing seat and a ground film shaft. The ground film shaft is detachably connected to the bearing seat. An electromagnetic damper that is linked to the ground film shaft is provided in the bearing seat. The electromagnetic damper is electrically connected to the main control unit.

4. The backpack-type mulch film covering device according to claim 3, characterized in that: The film pressing component and the film spreading arm are slidably connected in the height direction.

5. The backpack-type mulch film covering device according to claim 4, characterized in that: The top of the film pressing component is connected to a sliding rod, the film spreading arm is provided with a sliding sleeve, the sliding rod passes through the sliding sleeve, and the side wall of the sliding sleeve is provided with a locking bolt.

6. The backpack-type mulch film covering device according to claim 5, characterized in that: The pressing component includes a steel sheet and a plurality of rollers, the plurality of rollers being disposed on the bottom of the steel sheet with the same orientation.

7. The backpack-type mulch film covering device according to claim 6, characterized in that: The soil covering component is slidably connected to the film spreading arm in the height direction, and a hydraulic cylinder is provided between the soil covering component and the film spreading arm.

8. The backpack-type mulch film covering device according to claim 7, characterized in that: The soil covering assembly includes a plow blade and a compaction wheel connected by a connecting shaft, the connecting shaft being inclined relative to the film spreading arm so that the plow blade is located behind the compaction wheel.

9. The backpack-type mulch film covering device according to claim 1 or 2, characterized in that: The surface of the press wheel is decorated with spiral patterns.

10. The backpack-type mulch film covering device according to claim 9, characterized in that: The carrying assembly includes a carrying frame, on which shoulder straps and a waist belt are provided.

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