Film-coating, laying and drip irrigation integrated machine

Abstract

The utility model relates to film laying and drip irrigation machine technology field, and disclose a film laying and drip irrigation integrated machine, including mounting seat, the outer surface fixed mounting of mounting seat has the support, the outer surface rotationally connected with land film roller of support, this film laying and drip irrigation integrated machine, through by ditching spare on the mounting seat and excavate regular planting ditch, lay the foundation for the subsequent process, then drip irrigation roller frame on the frame synchronous release drip irrigation tape and accurate lead into the ditch, simultaneously, land film roller on the support releases land film, and the land film is pressed into in the ditch by the roller on no.

Description

Technical Field

[0001] This utility model relates to the technical field of film-covered drip irrigation machines, specifically a film-covered drip irrigation integrated machine. Background Technology

[0002] Drip irrigation is a precise irrigation method that uses a low-pressure pipeline system to deliver water directly to the field for irrigation. Compared with sprinkler irrigation, drip irrigation has a higher water-saving and yield-increasing effect. At the same time, it can be combined with fertilization to improve fertilizer efficiency. The mulching and drip irrigation integrated machine is an agricultural machine that integrates mulching and drip irrigation system laying. It can complete multiple operations such as ridging, mulching, laying drip irrigation tape, and fertilization in one go, significantly improving agricultural production efficiency.

[0003] Current integrated mulching and drip irrigation machines are prone to misalignment during installation, resulting in low installation efficiency and poor film stability. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an integrated mulching and drip irrigation machine, which solves the problems mentioned in the background art, such as the tendency of current integrated mulching and drip irrigation machines to misalign during laying, resulting in low laying efficiency and poor stability of the mulch film.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a film mulching and drip irrigation integrated machine, comprising a mounting base, a bracket fixedly mounted on the outer surface of the mounting base, a film roller rotatably connected to the outer surface of the bracket, a trenching component fixedly mounted on the outer surface of the mounting base, a connecting frame fixedly mounted on the outer surface of the trenching component, a fixed frame, a machine frame, and a first frame provided on the outer surface of the connecting frame, rollers rotatably connected to the outer surface of the fixed frame, a drip irrigation roller frame rotatably connected to the outer surface of the machine frame, a film mulching roller rotatably connected to the outer surface of the first frame, a soil covering component provided on the outer surface of the connecting frame, a soil covering element provided on the outer surface of the soil covering component, and a pressure roller rotatably connected to the outer surface of the first frame away from the film mulching roller.

[0006] Preferably, the outer surface of the drip irrigation roller frame is rotatably wound with drip irrigation tape, the outer surface of the mounting base is fixedly mounted with a fertilizer box, the outer surface of the fertilizer box is fixedly connected with a guide hopper, the outer surface of the guide hopper is provided with an electric control valve, the outer surfaces of the mounting base and the connecting frame are both fixedly mounted with spring telescopic components, the output end of the spring telescopic component is fixedly mounted with a fixed seat, the outer surface of the fixed seat is rotatably connected with a guide roller, the outer surface of the guide roller is provided with a drip irrigation tape recess, and the drip irrigation tape is attached to the outer surface of the mulch film roller through the drip irrigation tape recess.

[0007] Preferably, the trenching component includes a trenching bracket fixedly installed on the outer surface of the connecting frame, and a trenching plow is fixedly installed at the bottom end of the trenching bracket. The soil covering component includes a soil covering bracket fixedly installed on the outer surface of the connecting frame, a drive motor is fixedly installed on the outer surface of the soil covering bracket, a drive shaft is fixedly installed at the output end of the drive motor, a soil covering component is fixedly installed on the outer surface of the drive shaft, and soil covering teeth are evenly distributed on the outer surface of the soil covering component.

[0008] Preferably, the spring telescopic assembly includes a fixed sleeve fixedly installed on the outer surface of the mounting base and the connecting frame, a telescopic column is slidably connected inside the fixed sleeve, a telescopic spring is fixedly connected between the telescopic column and the fixed sleeve, and the output end of the telescopic column is fixedly connected to the fixed base.

[0009] Preferably, the curvature of the recessed platform of the drip irrigation tape is adapted to the curvature of the outer surface of the drip irrigation tape, and an anti-slip pad layer is fixedly installed on the inner wall of the recessed platform of the drip irrigation tape. The outer surface of the guide roller is rotatably connected to the outer surface of the mulch film roller and the drip irrigation roller frame, respectively.

[0010] Preferably, the frame is inverted L-shaped, the drip irrigation roller frame is located above the pressure roller and the roller, and the pressure roller and the roller are located in the middle of the mulch film roller and the film covering roller.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This integrated mulching and drip irrigation machine uses a trenching component on the mounting base to excavate a regular planting trench, laying the foundation for subsequent processes. Then, the drip irrigation roller frame on the machine frame simultaneously releases the drip irrigation tape and precisely guides it into the trench. At the same time, the mulch roller on the support releases the mulch film, which is then flattened onto the soil surface and wrapped with the drip irrigation tape by the pressure roller on the first frame. Rollers on the outer surface of the fixed frame press the mulch film into the trench. Subsequently, the soil covering component on the connecting frame pushes the soil on both sides to the edge of the mulch film to complete the initial fixation. Finally, the mulching roller on the other side of the first frame rolls and compacts the mulched area, thereby achieving a comprehensive optimization effect that improves work efficiency, laying accuracy, mulch film fixation, water resource utilization, and crop growth stability.

[0013] 2. This integrated drip irrigation and mulching machine automatically releases the drip irrigation tape wound around the outer surface of the drip irrigation roller frame as the machine moves. The spring telescopic components on the outer surface of the mounting base and connecting frame elastically and adaptively adjust the height of the fixed seat at the output end, causing the guide roller on the fixed seat to always keep in contact with the soil or mulch film surface. The drip irrigation tape recess on the outer surface of the guide roller forms a precise limit on the drip irrigation tape to prevent deviation. Ultimately, the drip irrigation tape is guided by the recess and closely adheres to the mulch film released by the mulch film roller. At the same time, the fertilizer bin on the mounting base stores fertilizer. When the fertilizer falls through the guide hopper, the electric control valve on the outer surface of the guide hopper precisely adjusts the dispensing speed and total amount by controlling the opening and closing degree. This achieves the synchronization of fertilizer dispensing, drip irrigation tape laying, and mulching operations, effectively reducing labor and time costs. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

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

[0016] Figure 3 This is a side view of the structure of this utility model;

[0017] Figure 4 This is a front sectional view of the structure of this utility model.

[0018] In the diagram: 1. Mounting base; 2. Fertilizer box; 3. Feed hopper; 4. Electric control valve; 5. Bracket; 6. Mulch film roller; 7. Trenching component; 8. Connecting frame; 9. Fixing frame; 10. Roller; 11. Frame; 12. Drip irrigation roller frame; 13. Frame No. 1; 14. Mulch film roller; 15. Soil covering component; 16. Soil covering component; 17. Pressure roller; 18. Spring telescopic component; 19. Fixing base; 20. Guide roller; 21. Drip irrigation tape recess. Detailed Implementation

[0019] 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.

[0020] Example 1:

[0021] Please refer to the following: Figure 1-4 ,

[0022] A film-covering and drip irrigation integrated machine includes a mounting base 1, a bracket 5 fixedly mounted on the outer surface of the mounting base 1, a film roller 6 rotatably connected to the outer surface of the bracket 5, a trenching component 7 fixedly mounted on the outer surface of the mounting base 1, a connecting frame 8 fixedly mounted on the outer surface of the trenching component 7, a fixing frame 9, a machine frame 11, and a first frame 13 arranged on the outer surface of the connecting frame 8, a roller 10 rotatably connected to the outer surface of the fixing frame 9, a drip irrigation roller frame 12 rotatably connected to the outer surface of the machine frame 11, a film-covering roller 14 rotatably connected to the outer surface of the first frame 13, a soil covering component 15 arranged on the outer surface of the connecting frame 8, a soil covering component 16 arranged on the outer surface of the soil covering component 15, and a pressure roller 17 rotatably connected to the outer surface of the first frame 13 away from the film-covering roller 14.

[0023] Specifically, the planting trench is dug and shaped by the trenching component 7 on the mounting base 1, laying the foundation for subsequent processes. Then, the drip irrigation roller frame 12 on the frame 11 releases the drip irrigation tape and accurately guides it into the trench. At the same time, the mulch film roller 6 on the support 5 releases the mulch film, which is then flattened onto the soil surface and wrapped with the drip irrigation tape by the pressure roller 17 on the first frame 13. The rollers 10 on the outer surface of the fixing frame 9 press the mulch film into the trench. Then, the soil covering component 15 on the connecting frame 8 pushes the soil on both sides to the edge of the mulch film to complete the initial fixation. Finally, the film covering roller 14 on the other side of the first frame 13 rolls and compacts the film covering area, thereby achieving a comprehensive optimization effect of improving work efficiency, laying accuracy, mulch film fixation, water resource utilization and crop growth stability.

[0024] In the embodiment: the trenching component 7 includes a trenching bracket 5 fixedly installed on the outer surface of the connecting frame 8, and a trenching plow is fixedly installed at the bottom end of the trenching bracket 5. The soil covering component 15 includes a soil covering bracket 5 fixedly installed on the outer surface of the connecting frame 8, a drive motor is fixedly installed on the outer surface of the soil covering bracket 5, a drive shaft is fixedly installed at the output end of the drive motor, and a soil covering component 16 is fixedly installed on the outer surface of the drive shaft, and soil covering teeth are evenly distributed on the outer surface of the soil covering component 16.

[0025] Specifically, the trenching component 7 relies on the trenching bracket 5 fixed to the outer surface of the connecting frame 8 for stable support. The trenching plow at its bottom penetrates the soil as the machine moves, using the plow body structure to dig out regular and uniform planting trenches, providing a clear positioning channel for the subsequent precise laying of drip irrigation tape. The soil covering component 15 uses the soil covering bracket 5 fixed to the outer surface of the connecting frame 8 as the installation base. The drive motor outputs power to drive the drive shaft to rotate, causing the soil covering component 16 with uniform soil covering teeth on the outer surface of the drive shaft to rotate synchronously. With the mechanical force of the soil covering teeth, the soil on both sides of the machine's travel path is actively and evenly sent to below the edge of the mulch film. Under this design, the structured excavation of the furrowing plow ensures uniform planting furrow specifications and avoids the problem of inconsistent depths in manual furrowing, providing a preliminary guarantee for drip irrigation tape laying deviation ≤2cm; while the soil covering component 16 driven by the drive motor, in conjunction with the soil covering teeth, can improve the uniformity of soil delivery and the covering force compared to the passive soil covering method, making the soil covering at the edge of the mulch film denser. Combined with the subsequent compaction by the pressure roller 17, the mulch film retention rate is further increased to over 95%, effectively preventing it from being blown away by strong winds. At the same time, the mechanized actions of furrowing and soil covering are also integrated into the overall collaborative process, helping to improve the work efficiency of the integrated multi-process by 3 to 5 times.

[0026] In this embodiment: the frame 11 is inverted L-shaped, the drip irrigation roller frame 12 is located on the upper part of the pressure roller 17 and the roller 10, and the pressure roller 17 and the roller 10 are located in the middle of the film roller 6 and the film covering roller 14.

[0027] Specifically, the frame 11 adopts an inverted L-shaped design. Its horizontal section can stably support the drip irrigation roller frame 12 located on the upper part of the pressure roller 17 and roller 10, while the vertical section is smoothly connected to the connecting frame 8, the film covering roller 14 and other components. It not only reduces the shaking of components when the machine is moving by utilizing its own structural rigidity, but also leaves sufficient working space for each component to avoid interference. At the same time, the pressure roller 17 and roller 10 are respectively set in the middle of the film roller 6 and the film covering roller 14. The drip irrigation roller frame 12 stably drops the drip irrigation tape from the top to the planting furrow. After the film released by the film roller 6 is covered by the film covering roller 14, the pressure roller 17 in the middle can quickly follow up and compact it. The roller 10 can also adjust the film tension synchronously.

[0028] Working principle: A bracket 5 is fixedly installed on the outer surface of the mounting base 1. A film roller 6 is rotatably connected to the outer surface of the bracket 5. A trenching component 7 is fixedly installed on the outer surface of the mounting base 1. A connecting frame 8 is fixedly installed on the outer surface of the trenching component 7. A fixing frame 9, a machine frame 11, and a first frame 13 are provided on the outer surface of the connecting frame 8. A roller 10 is rotatably connected to the outer surface of the fixing frame 9. A drip irrigation roller frame 12 is rotatably connected to the outer surface of the machine frame 11. A film covering roller 14 is rotatably connected to the outer surface of the first frame 13. A soil covering component 15 is provided on the outer surface of the connecting frame 8. A soil covering component 16 is provided on the outer surface of the soil covering component 15. A pressure roller 17 is rotatably connected to the outer surface of the first frame 13 away from the film covering roller 14. The trenching component 7 on the mounting base 1 creates neat planting trenches. The trench lays the foundation for subsequent processes. Then, the drip irrigation roller frame 12 on the frame 11 releases the drip irrigation tape and accurately guides it into the trench. At the same time, the mulch film roller 6 on the support 5 releases the mulch film, which is then flattened onto the soil surface and wrapped with the drip irrigation tape by the pressure roller 17 on the first frame 13. The rollers 10 on the outer surface of the fixing frame 9 press the mulch film into the trench. Then, the soil covering component 15 on the connecting frame 8 pushes the soil on both sides to the edge of the mulch film to complete the initial fixation. Finally, the mulch film roller 14 on the other side of the first frame 13 rolls and compacts the mulch film area. Compared with related technologies, the mulch film laying and drip irrigation integrated machine provided by this utility model has the following beneficial effects: thereby achieving a comprehensive optimization effect of improving work efficiency, laying accuracy, mulch film fixation, water resource utilization and crop growth stability.

[0029] Example 2:

[0030] Please refer to the following: Figure 1-4 ,

[0031] The outer surface of the drip irrigation roller frame 12 is rotatably wound with drip irrigation tape. The outer surface of the mounting base 1 is fixedly installed with fertilizer box 2. The outer surface of fertilizer box 2 is fixedly connected with guide hopper 3. The outer surface of guide hopper 3 is provided with electric control valve 4. The outer surfaces of mounting base 1 and connecting frame 8 are both fixedly installed with spring telescopic assembly 18. The output end of spring telescopic assembly 18 is fixedly installed with fixed base 19. The outer surface of fixed base 19 is rotatably connected with guide roller 20. The outer surface of guide roller 20 is provided with drip irrigation tape recess 21. The drip irrigation tape is attached to the outer surface of mulch film roller 6 through drip irrigation tape recess 21.

[0032] Specifically, the drip irrigation tape wrapped around the outer surface of the drip irrigation roller frame 12 is automatically released as the machine travels. The spring telescopic component 18 on the outer surface of the mounting base 1 and the connecting frame 8 adjusts the height of the output end fixed base 19 with elasticity, so that the guide roller 20 on the fixed base 19 always keeps in contact with the soil or mulch film surface. The drip irrigation tape recess 21 on the outer surface of the guide roller 20 forms a precise limit on the drip irrigation tape to prevent deviation. Finally, the drip irrigation tape is guided by the recess and closely adheres to the mulch film released by the mulch film roller 6. At the same time, the fertilizer box 2 on the mounting base 1 stores fertilizer. When the fertilizer falls through the guide hopper 3, the electric control valve 4 on the outer surface of the guide hopper 3 precisely adjusts the dispensing speed and total amount by controlling the opening and closing degree. This achieves the effect of synchronizing fertilizer dispensing with drip irrigation tape laying and mulching operations, effectively reducing labor and time costs.

[0033] In the embodiment: the spring telescopic assembly 18 includes a fixed sleeve that is fixedly installed on the outer surface of the mounting base 1 and the connecting frame 8. A telescopic column is slidably connected inside the fixed sleeve. A telescopic spring is fixedly connected between the telescopic column and the fixed sleeve. The output end of the telescopic column is fixedly connected to the fixed base 19.

[0034] Specifically, the spring telescopic assembly 18 uses a fixed sleeve, which is fixedly installed on the outer surface of the mounting base 1 and the connecting frame 8, as a stable support base. The telescopic column and the telescopic spring between the telescopic column and the fixed sleeve form an elastic linkage structure. When the machine travels on uneven terrain, the guide roller 20 contacts the raised terrain, pushing the telescopic column into the sleeve and simultaneously storing elastic potential energy in the telescopic spring. When encountering concave terrain, the telescopic spring releases the elastic potential energy, pushing the telescopic column outward from the sleeve. This not only prevents the guide roller 20 from being suspended or shifted due to terrain undulations, but also ensures that the drip irrigation tape recess 21 on the outer surface of the guide roller 20 is aligned with the drip irrigation tape. The limiting effect is continuous and effective, keeping the drip irrigation tape laying deviation stably controlled within ≤1cm. It can also keep the guide roller 20 in close contact with the ground surface even when the soil surface flatness error is ≤5cm. At the same time, the elastic buffering effect of the telescopic spring can alleviate the impact force when the guide roller 20 comes into contact with the raised terrain, reducing hard impact damage to the telescopic column, fixing seat 19 and guide roller 20 to extend service life. In addition, the guide roller 20 always contacts the surface of the mulch film, which can help to compact the mulch film. Together with the pressure roller 17, it can further improve the adhesion between the mulch film and the soil, reduce the wrinkling or suspension of the mulch film, and indirectly help to keep the mulch film retention rate at a high level, ensuring the moisture retention and weed control effects.

[0035] In the embodiment: the curvature of the drip irrigation tape recess 21 is adapted to the curvature of the outer surface of the drip irrigation tape, and an anti-slip pad is fixedly installed on the inner wall of the drip irrigation tape recess 21. The outer surface of the guide roller 20 is rotatably connected to the outer surface of the mulch film roller 6 and the drip irrigation roller frame 12, respectively.

[0036] Specifically, the drip irrigation tape recess 21 is designed to perfectly match the curvature of the outer surface of the drip irrigation tape, allowing the drip irrigation tape to be tightly embedded to form a lateral constraint and prevent lateral deviation during delivery. The anti-slip pad layer on the inner wall of the recess increases the coefficient of friction, offsetting the longitudinal sliding tendency caused by machine vibration and tension changes in the drip irrigation roller frame 12. At the same time, the outer surface of the guide roller 20 is rotatably connected to the mulch film roller 6 and the drip irrigation roller frame 12 respectively, and is driven to rotate synchronously by the friction of the two, forming a continuous action chain.

[0037] Working principle: Drip irrigation tape is rotatably wound around the outer surface of the drip irrigation roller frame 12. A fertilizer box 2 is fixedly installed on the outer surface of the mounting base 1. A guide hopper 3 is fixedly connected to the outer surface of the fertilizer box 2. An electric control valve 4 is installed on the outer surface of the guide hopper 3. Spring telescopic components 18 are fixedly installed on the outer surfaces of the mounting base 1 and the connecting frame 8. A fixed base 19 is fixedly installed at the output end of the spring telescopic components 18. A guide roller 20 is rotatably connected to the outer surface of the fixed base 19. A drip irrigation tape recess 21 is formed on the outer surface of the guide roller 20. The drip irrigation tape is attached to the outer surface of the mulch film roller 6 through the drip irrigation tape recess 21. The drip irrigation tape wound on the outer surface of the drip irrigation roller frame 12 is automatically released as the machine moves. The spring telescopic components on the outer surfaces of the mounting base 1 and the connecting frame 8 are activated. Component 18, with its elastic adaptive adjustment of the height of the output end fixing seat 19, drives the guide roller 20 on the fixing seat 19 to always keep in contact with the soil or mulch film surface. The drip irrigation tape recess 21 on the outer surface of the guide roller 20 forms a precise limit on the drip irrigation tape to prevent deviation. Ultimately, the drip irrigation tape is guided by the recess and closely adheres to the mulch film released by the mulch film roller 6. At the same time, the fertilizer box 2 on the mounting seat 1 stores fertilizer. When the fertilizer falls through the guide hopper 3, the electric control valve 4 on the outer surface of the guide hopper 3 precisely adjusts the dispensing speed and total amount by controlling the opening and closing degree. Compared with related technologies, the integrated drip irrigation and mulching machine provided by this utility model has the following beneficial effects: it achieves the effect of synchronizing fertilizer dispensing, drip irrigation tape laying, and mulching operations, effectively reducing labor and time costs.

[0038] 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 film-laminating, laying and drip-irrigating integrated machine comprising a mounting seat (1), characterized in that: A bracket (5) is fixedly installed on the outer surface of the mounting base (1). A film roller (6) is rotatably connected to the outer surface of the bracket (5). A trenching component (7) is fixedly installed on the outer surface of the mounting base (1). A connecting frame (8) is fixedly installed on the outer surface of the trenching component (7). A fixing frame (9), a machine frame (11), and a first frame (13) are provided on the outer surface of the connecting frame (8). A roller (10) is rotatably connected to the outer surface of the fixing frame (9). A drip irrigation roller frame (12) is rotatably connected to the outer surface of the machine frame (11). A film covering roller (14) is rotatably connected to the outer surface of the first frame (13). A soil covering component (15) is provided on the outer surface of the connecting frame (8). A soil covering component (16) is provided on the outer surface of the soil covering component (15). A pressure roller (17) is rotatably connected to the outer surface of the first frame (13) away from the film covering roller (14).

2. The film-laminating, drip-irrigating, and laying integrated machine according to claim 1, characterized in that: The drip irrigation tape is rotatably wound around the outer surface of the drip irrigation roller frame (12). A fertilizer box (2) is fixedly installed on the outer surface of the mounting base (1). A guide hopper (3) is fixedly connected to the outer surface of the fertilizer box (2). An electric control valve (4) is provided on the outer surface of the guide hopper (3). A spring telescopic assembly (18) is fixedly installed on the outer surface of both the mounting base (1) and the connecting frame (8). A fixed seat (19) is fixedly installed at the output end of the spring telescopic assembly (18). A guide roller (20) is rotatably connected to the outer surface of the fixed seat (19). A drip irrigation tape recess (21) is opened on the outer surface of the guide roller (20). The drip irrigation tape is attached to the outer surface of the mulch film roller (6) through the drip irrigation tape recess (21).

3. The film-laminating, drip-irrigating, and laying integrated machine according to claim 1, characterized in that: The trenching component (7) includes a trenching bracket (5) fixedly installed on the outer surface of the connecting frame (8). A trenching plow is fixedly installed at the bottom end of the trenching bracket (5). The soil covering component (15) includes a soil covering bracket (5) fixedly installed on the outer surface of the connecting frame (8). A drive motor is fixedly installed on the outer surface of the soil covering bracket (5). A drive shaft is fixedly installed at the output end of the drive motor. A soil covering component (16) is fixedly installed on the outer surface of the drive shaft. Soil covering teeth are evenly distributed on the outer surface of the soil covering component (16).

4. The film-laminating, drip-irrigating, and laying integrated machine according to claim 2, characterized in that: The spring telescopic assembly (18) includes a fixed sleeve that is fixedly installed on the outer surface of the mounting base (1) and the connecting frame (8). A telescopic column is slidably connected inside the fixed sleeve. A telescopic spring is fixedly connected between the telescopic column and the fixed sleeve. The output end of the telescopic column is fixedly connected to the fixed base (19).

5. The film-laminating, drip-irrigating, and laying integrated machine according to claim 2, characterized in that: The curvature of the drip irrigation tape recess (21) is adapted to the curvature of the outer surface of the drip irrigation tape. An anti-slip pad is fixedly installed on the inner wall of the drip irrigation tape recess (21). The outer surface of the guide roller (20) is rotatably connected to the outer surface of the mulch film roller (6) and the drip irrigation roller frame (12).

6. The film-laminating, drip-irrigating, and laying integrated machine according to claim 1, characterized in that: The frame (11) is inverted L-shaped, the drip irrigation roller frame (12) is located on the upper part of the pressure roller (17) and the roller (10), and the pressure roller (17) and the roller (10) are located in the middle of the mulch roller (6) and the film covering roller (14).

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