Eggplant film covering edge seam pressing device
By installing an adjustable soil covering device and tensioning wheel on the mulching vehicle, combined with a rubber pressing wheel, the problem of loose mulching caused by inconsistent film thickness is solved, achieving tight and flat film edges, adapting to various planting environments, and preventing edge curling and loosening.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-03-13
AI Technical Summary
Existing agricultural film-laying and soil-covering devices suffer from inconsistent film thickness during the mulching process, leading to inconsistent burial depths in the trenches. This inconsistency in film thickness results in an unadjustable offset angle of the soil cover, loose film coverage, easy curling of the film edges, and contact with external air.
A method for pressing the edges of eggplant mulch film is designed. By setting an adjustable soil cover and tensioning wheel on the mulching vehicle, combined with a rubber pressing wheel, the film is made tight and prevents the edges from curling. It can adapt to different ridge widths and film thicknesses. By using the cooperation of the soil cover and pressing wheel, the soil coverage area is increased and the film edges are prevented from loosening.
It effectively prevents the film edges from curling up, reduces contact with outside air, improves the tightness and flatness of the film, adapts to various planting environments, and ensures that the film does not loosen or wrinkle during the laying process.
Smart Images

Figure CN223987487U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of eggplant planting mulching technology, specifically an eggplant mulching edge seam pressing device. Background Technology
[0002] During the cultivation of eggplants, it is necessary to cover their surface with a greenhouse to change the growing environment. During the mulching process, it is usually necessary to dig trenches on both sides of the covered area to prevent the film from shifting after mulching. The trenches are then filled with soil, and the weight of the soil compacts the film, preventing the eggplants inside the film from coming into contact with the outside air and preventing the film from shifting.
[0003] Meanwhile, patent application number 202122261279.7 discloses an agricultural planting film laying and soil covering device, including an assembly base, a film pressing roller and a soil covering baffle. The device is characterized in that: a film pressing roller is provided below the assembly base, a film loading mechanism and a pressing edge mechanism are respectively provided on both sides of the film pressing roller, and a soil covering baffle is provided on the side of the pressing edge mechanism away from the film pressing roller, and multiple sets of soil covering baffles are provided.
[0004] However, during the implementation of the relevant technology, it was found that the above-mentioned agricultural planting film laying and soil covering device has the following problems: due to the inconsistent thickness of the film laid, the required depth of the film buried in the trench is inconsistent. Furthermore, since this soil covering device is a non-adjustable device, the offset angle of the soil covering device when pushing soil into the trench is not adjustable, resulting in less soil covering the film surface and insufficient tightness when covering the film edges, causing the film to come into contact with the outside air. After long-term use, the edges are prone to curling. Utility Model Content
[0005] To address the problems mentioned in the background art, this utility model provides an eggplant mulching edge seam pressing device, which has the advantages of increasing the contact area between the mulching device and the soil by setting the mulching device to an adjustable angle, and pushing the soil to the position before trenching during the mulching machine's operation to cover the film, thereby reducing the edge curling of the film.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an eggplant mulching edge seam pressing device, comprising a mulching cart, the mulching cart being composed of a drive roller, a frame, a tension roller frame, and a soil covering device, the drive roller and the soil covering device being respectively disposed on the front and rear sides of the mulching cart, the frame being fixed to the surface of the mulching cart, the tension roller being fixed to the bottom end of the frame, the tension roller being disposed between the drive roller and the soil covering device, and an angle adjustment component being disposed on the outer side of the soil covering device;
[0007] The angle adjustment assembly includes an extension frame, with a collar slidably connected to the outer side of the extension frame. Locking rings are arranged at the same number of positions on the collar. A first fixing seat is fixedly connected to the surface of each locking ring. A central shaft is rotatably connected inside the first fixing seat. A pull rod passes through the outer side of the central shaft. A threaded groove is formed on the surface of the pull rod. A rotating rod is threadedly connected inside the threaded groove. A locking block is threadedly connected to one end of the rotating rod. A second fixing seat is arranged outside the rotating rod. A bearing is fixedly connected inside the locking ring. The bearing is fixedly connected to the soil cover, and one end of the bearing passes through the interior of the soil cover.
[0008] Preferably, a vertical rod is slidably connected inside the collar and the locking ring. A positioning groove is formed on the surface of the vertical rod, and a locking pin is slidably connected inside the positioning groove of the vertical rod. The locking pins all penetrate the inside of the collar and the locking ring and are slidably connected to the inside of the circular groove of the vertical rod.
[0009] Preferably, the surface of the extension frame is provided with a pressure adjustment component, the pressure adjustment component includes a support rod that passes through the surface of the extension frame, a spring is sleeved on the outer side of the extension frame, a connecting plate is fixedly connected to the bottom end of the spring, an iron frame is fixedly connected to one end of the connecting plate, and the top end of the iron frame is fixedly connected to the bottom end of the extension frame.
[0010] Preferably, one end of the connecting plate has an iron frame extending through it, and the iron frame is located on one side of the covering device.
[0011] Preferably, the rotation range of the covering device is set between 0 and 15°, and the outer side of the pressing wheel is made of rubber material.
[0012] Preferably, the two sets of pressing rollers are defined between the roller frame, and the tensioning roller is disposed above the surface of the pressing rollers.
[0013] Preferably, the locking block passes through the second fixed seat and is inside the rotating rod, and the rotating rod rotates inside the second fixed seat.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] 1. This utility model adds a tensioning wheel to one side of the mulching cart. When the roller frame applies mulch to the eggplant surface, the tensioning wheel presses against the film pulled out by the roller frame. The surfaces of the tensioning wheel and the pressing wheel are made of flexible materials such as rubber, which can ensure the pressing force on the film without damaging it. By setting a certain distance between the pressing wheel and the covering device, the covering device is set on the outside of the pressing wheel. When the furrow opener on the outside of the mulching cart opens shallow furrows on both sides of the ridge, the covering device covers the soil on the edge of the mulch film. In conjunction with the pressing wheel, the film is pressed tightly. The covering device backfills the soil dug out during furrowing to the edge of the mulch film, burying and pressing it tightly, which plays a role in fixing the mulch film and preventing the edge of the film from lifting up, which would allow external air to enter the inside of the film during eggplant planting. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the roller frame structure of this utility model;
[0018] Figure 3 This is a schematic diagram of the pressure roller structure of this utility model;
[0019] Figure 4 This is a schematic diagram of the angle adjustment component of this utility model;
[0020] Figure 5 This is a schematic diagram of the locking block structure of this utility model.
[0021] In the diagram: 1. Film covering vehicle; 11. Drive roller; 12. Frame; 13. Tensioner; 14. Roller frame; 15. Soil covering device;
[0022] 2. Angle adjustment assembly; 21. Extension frame; 22. Collar; 23. Locking pin; 24. Vertical rod; 25. Locking ring; 26. First fixed seat; 27. Pull rod; 28. Threaded groove; 29. Rotating rod; 210. Second fixed seat; 211. Central shaft; 212. Bearing; 213. Locking block
[0023] 3. Pressure regulating component; 31. Support rod; 32. Spring; 33. Connecting plate; 34. Iron frame; 35. Pressure roller. Detailed Implementation
[0024] 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.
[0025] like Figures 1 to 5 As shown, this utility model provides an eggplant mulching edge seam pressing device, including a mulching cart 1. The mulching cart 1 is composed of a drive roller 11, a frame 12, a tension roller 13, a roller frame 14, and a soil covering device 15. The drive roller 11 and the soil covering device 15 are respectively arranged on the front and rear sides of the mulching cart 1. The frame 12 is fixed on the surface of the mulching cart 1. The tension roller 13 is fixed at the bottom end of the frame 12. The tension roller 13 is arranged between the drive roller 11 and the soil covering device 15. An angle adjustment component 2 is arranged on the outer side of the soil covering device 15.
[0026] The angle adjustment assembly 2 includes an extension frame 21. A collar 22 is slidably connected to the outer side of the extension frame 21. Locking rings 25 are arranged at the same positions on the collar 22. A first fixing seat 26 is fixedly connected to the surface of each locking ring 25. A central shaft 211 is rotatably connected inside the first fixing seat 26. A pull rod 27 passes through the outer side of the central shaft 211. A threaded groove 28 is formed on the surface of the pull rod 27. A rotating rod 29 is threadedly connected inside the threaded groove 28. A locking block 213 is threadedly connected to one end of the rotating rod 29. The locking block 213 is used to lock one end of the rotating rod 29, which can rotate the rotating rod 29 out from one side of the second fixed seat 210. The second fixed seat 210 is provided on the outside of the rotating rod 29. The bearing 212 is fixedly connected inside the locking ring 25. The inside of the bearing 212 is fixedly connected to the soil cover 15. One end of the bearing 212 passes through the inside of the soil cover 15. When the soil cover 15 rotates, it drives the inside of the bearing 212 to rotate. The outside of the bearing 212 is used to support one side of the inside of the locking ring 25.
[0027] Specifically, a vertical rod 24 is slidably connected inside the collar 22 and the locking ring 25. A positioning groove is provided on the surface of the vertical rod 24. A locking pin 23 is slidably connected inside the positioning groove of the vertical rod 24. The locking pin 23 passes through the inside of the collar 22 and the locking ring 25 and is slidably connected to the inside of the round hole groove of the vertical rod 24. By changing the position of the vertical rod 24 inside the collar 22 and the locking ring 25, the distance between the soil cover 15 and the soil can be changed. It can adapt to various planting environments and mulch film specifications according to different ridge widths and film thicknesses.
[0028] Furthermore, a pressure adjusting assembly 3 is provided on the surface of the extension frame 21. The pressure adjusting assembly 3 includes a support rod 31 that penetrates the surface of the extension frame 21. A spring 32 is sleeved on the outer side of the extension frame 21. A connecting plate 33 is fixedly connected to the bottom end of the spring 32 to prevent the pressure roller 35 from jumping upwards due to bumps from the soil during travel, thus preventing the pressure roller 35 from failing to press the film tightly and causing gaps in the film. The spring 32 can exert a downward force on the jumping pressure roller 35, pressing the film tightly. An iron frame 34 is fixedly connected to one end of the connecting plate 33. The top end of the iron frame 34 is fixedly connected to the bottom end of the extension frame 21 to support the iron frame 34.
[0029] Furthermore, an iron frame 34 passes through one end of the connecting plate 33, and the iron frame 34 is located on one side of the covering device 15.
[0030] It is worth noting that the rotation limit range of the covering device 15 is set between 0 and 15°. This reasonable angle prevents the film from becoming loose or wrinkled during the laying process and prevents the covering device 15 from experiencing excessive resistance, which would cause the film covering vehicle 1 to travel slowly. The outer side of the pressure roller 35 is made of rubber, which allows the film to move along the predetermined direction during the laying process, ensuring the flatness and accuracy of the film laying.
[0031] It is worth noting that the two sets of pressing rollers 35 are confined between the roller frame 14, and the pressing rollers 35 can press the film drawn from the surface of the roller frame 14. The tensioning roller 13 is set above the film surface. The tensioning roller 13 is set as a telescopic mechanism to increase the tension of the film and prevent the film from loosening or wrinkling during the laying process.
[0032] It is worth mentioning that the locking block 213 passes through the second fixed seat 210 and is inside the rotating rod 29. It releases the restriction on the rotating rod 29. After the rotating rod 29 is pulled out, it can rotate into the threaded groove 28 inside the pull rod 27, changing the overall length and forming unequal lengths between the two sets of pull rods 27 and rotating rod 29.
[0033] The laminating vehicle 1 is existing technology and will not be described in detail. Additionally, this utility model also includes a power supply, controller, and switch, which are not the main technical points of this patent and will not be described in detail. The "front, rear, left, and right" perspectives of this device are... Figure 1 The direction shown in the diagram is the reference.
[0034] Working principle:
[0035] First, the workers drive the mulching vehicle 1 to the area requiring mulching, pull the film to be covered from the roller frame 14, and pass it through the surface of the tensioning roller 13. The tensioning roller 13 is used to press the film tight. The furrow opener first digs a trench along the edge of the ridge to place the edge of the mulch film. During the journey, the film covers the designated area for eggplant planting. Then, the mulch film is laid on the ridge. The pressing roller 35 presses the film tight during the journey. When encountering uneven soil surfaces, the pressing roller 35 is subjected to bumps from the uneven road surface. The pressing roller 35 transmits the external force to the connecting plate 33. The connecting plate 33 transmits the force to the spring 32 on the outside of the support rod 31. The spring 32 buffers the bumps generated by the pressing roller 35 and backfills the soil dug out during the furrow opening to the edge of the mulch film.
[0036] When a tighter pressing of the membrane is required, the angle of the covering device 15 needs to be adjusted. First, the two sets of locking blocks 213 are pulled out from the inside of the second fixed seat 210. One set of rotating rods 29 is rotated clockwise into the threaded groove 28 inside the first fixed seat 26 to shorten the overall length of the rotating rod 29 and the pull rod 27. The other set of rotating rods 29 is extended from the inside of the pull rod 27 to the outside to increase the distance between the rotating rod 29 and the pull rod 27, so that the two sets of lengths are not the same. After adjusting the positions of the two sets, the angle of the covering device 15 is adjusted to produce a shift. The locking block 213 is then held and reinserted into the corresponding second fixed seat 210 to achieve locking. The shifted covering device 15 can cover more soil on the surface of the membrane and can press the edge seams tightly during the covering process.
[0037] 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 process, method, article, or apparatus.
[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 device for pressing the edges of a mulch film on eggplants, comprising a mulch film vehicle (1), characterized in that: The film covering vehicle (1) is composed of a driving roller (11), a frame (12), a tensioning roller (13), a roller frame (14) and a soil covering device (15), the driving roller (11) and the soil covering device (15) are arranged on the front and rear sides of the film covering vehicle (1) respectively, the frame (12) is fixed on the surface of the film covering vehicle (1), the tensioning roller (13) is fixed on the bottom end of the frame (12), the tensioning roller (13) is arranged between the driving roller (11) and the soil covering device (15), and the outer side of the soil covering device (15) is provided with an angle adjusting assembly (2). The angle adjusting assembly (2) comprises an extension frame (21), the outer side of the extension frame (21) is slidably connected with a sleeve ring (22), the sleeve ring (22) is provided with a lock ring (25) at the same position, the surface of the lock ring (25) is fixedly connected with a first fixing seat (26), the inside of the first fixing seat (26) is rotatably connected with a central shaft (211), the outer side of the central shaft (211) penetrates a pull rod (27), the surface of the pull rod (27) is provided with a threaded groove (28), the inside of the threaded groove (28) is threadedly connected with a rotating rod (29), one end of the rotating rod (29) is threadedly connected with a locking block (213), the outer side of the rotating rod (29) is provided with a second fixing seat (210), the inside of the lock ring (25) is fixedly connected with a bearing (212), the inside of the bearing (212) is fixedly connected with the soil covering device (15), and one end of the bearing (212) penetrates the inside of the soil covering device (15).
2. The device according to claim 1, characterized in that: The inside of the sleeve ring (22) and the lock ring (25) is slidably connected with a vertical rod (24), the surface of the vertical rod (24) is provided with a positioning groove, and the inside of the positioning groove of the vertical rod (24) is slidably connected with a locking pin (23), the locking pin (23) penetrates the inside of the sleeve ring (22) and the lock ring (25) and is slidably connected with the circular hole groove inside the vertical rod (24).
3. The device according to claim 1, characterized in that: The surface of the extension frame (21) is provided with a pressure adjusting assembly (3), the pressure adjusting assembly (3) comprises a supporting rod (31), the supporting rod (31) penetrates the surface of the extension frame (21), the outer side of the extension frame (21) is sleeved with a spring (32), the bottom end of the spring (32) is fixedly connected with a connecting plate (33), one side of the connecting plate (33) is rotatably connected with a film pressing wheel (35), one end of the connecting plate (33) is fixedly connected with an iron stand (34), and the top end of the iron stand (34) is fixedly connected to the bottom end of the extension frame (21).
4. A device for edge-seaming and compacting a mulch film on eggplants according to claim 3, characterized in that: One end of the connecting plate (33) penetrates the iron stand (34), and the iron stand (34) is arranged on one side of the soil covering device (15).
5. A device for edge-seaming and compacting a mulch film on eggplants according to claim 4, characterized in that: The rotation limiting range of the soil covering device (15) is between 0 and 15 degrees, and the outer side of the film pressing wheel (35) is made of rubber material.
6. A device for edge-seaming and compacting a mulch film on eggplants according to claim 5, characterized in that: Two groups of the film pressing wheels (35) are limited between the roller frames (14), and the tensioning roller (13) is arranged above the surface of the film pressing wheels (35).
7. The device according to claim 1, characterized in that: The locking block (213) penetrates the inside of the second fixing seat (210) and the rotating rod (29) in sequence, and the rotating rod (29) rotates in the inside of the second fixing seat (210).
Citation Information
Patent Citations
Film mulching and soil covering device for agricultural planting
CN216146889U