Film seeder with easy film roll replacement
Patent Information
- Application Number
- CN202522499162.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-25
- Publication Date
- 2026-10-13
- Estimated Expiration
- 2035-11-25
AI Technical Summary
[0003]覆膜播种机的膜辊通常位于行走机架的底部,当膜辊耗尽需要更换时,操作者需在机器底下或高举重物进行操作,由于活动空间受限,导致更换过程费力,劳动强度大,且存在膜辊两端轴头对位困难的问题
通过可横向抽拉的滑架设计,将整个覆膜机构移至机架外侧,操作者无需在机器底下或高举重物进行操作,获得了宽敞、舒适的操作空间,提高了操作便利性;
Smart Images

Figure CN224844878U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a film-mulching seeder, specifically, to a film-mulching seeder that facilitates the replacement of film rollers, and belongs to the field of seeding equipment technology. Background Technology
[0002] A mulching seeder is a modern agricultural machine that integrates mulching and sowing functions. It completes both sowing and mulching in one operation, making it a key piece of equipment for achieving efficient and high-yield agricultural planting. Mulching seeders are typically mounted behind tractors, moving with the tractor to complete multiple tasks in a single operation.
[0003] The film rollers of a mulching seeder are usually located at the bottom of the walking frame. When the film rollers are worn out and need to be replaced, the operator has to operate from under the machine or by lifting heavy objects. Due to the limited space, the replacement process is labor-intensive and the labor intensity is high. In addition, there is a problem of difficulty in aligning the shaft ends of the film rollers.
[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content
[0005] This utility model addresses the shortcomings of the prior art by providing a film-covering seeder that facilitates film roller replacement. By using a lateral pull-out mechanism, it creates a spacious operating area for film replacement, improving operational convenience. Furthermore, by using a hook-in installation method for the film roller, it reduces the precision requirements for operation and effectively reduces labor intensity.
[0006] To solve the above technical problems, the present invention adopts the following technical solution: A film-mulching seeder that facilitates film roller replacement includes a seeder frame. Two symmetrically arranged fixed frames are installed at the rear bottom of the seeder frame along the direction of travel. A retractable slide is installed between the two fixed frames. The retraction direction of the slide is perpendicular to the direction of travel of the seeder frame. Support seats are fixedly installed at both ends of the slide along the length direction. Film rollers and pressure rollers are installed sequentially from bottom to top inside the support seats.
[0007] Furthermore, the bottom of the support base is fixed to the slide frame by bolts, and the support base is provided with a film roller groove, the bottom of which has a semi-circular structure.
[0008] Furthermore, a clearance groove is provided on one side of the top of the membrane roller groove, and the clearance groove and the membrane roller groove are smoothly transitioned. The clearance groove is located on the side of the support base.
[0009] Furthermore, the support base has a pressure roller groove at the top, which is arranged vertically and has a semi-circular bottom. The pressure roller groove is used to install the shaft head of the pressure roller.
[0010] Furthermore, the fixing frame consists of longitudinal beams and cross beams, with the bottom of the longitudinal beams fixedly connected to the cross beams vertically, and the top of the longitudinal beams fixedly connected to the seeder frame.
[0011] Furthermore, a guide rail is fixedly installed on the upper surface of the crossbeam, and the guide rail is set along the length of the crossbeam.
[0012] Furthermore, rollers are installed on both sides of the bottom of the carriage along its length, and the rollers are slidably mounted above the guide rail.
[0013] Furthermore, a pull handle is installed at the end of the carriage along its length.
[0014] Furthermore, a pressure plate is installed on the top of the support base, and the pressure plate is located at the top opening of the pressure roller groove.
[0015] Furthermore, the pressure plate is mounted to the top of the support base using two handle screws.
[0016] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages: With the horizontally pull-out carriage design, the entire laminating mechanism is moved to the outside of the frame, eliminating the need for operators to operate under the machine or lift heavy objects high up, thus providing a spacious and comfortable operating space and improving operational convenience. The side-opening clearance groove design eliminates the need for alignment when changing the film roller; simply hook the shaft head in from the side. This greatly reduces the precision requirements, allowing a single person to easily complete the task and drastically reducing labor intensity.
[0017] With adaptive pressing by the pressure roller, the pressure roller floats up and down as the diameter of the film roller changes, always maintaining a stable and uniform pressure on the surface of the film roller, ensuring that the mulch film has appropriate tension throughout the laying process, resulting in a smoother film covering that is less prone to wrinkling.
[0018] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the membrane roller installation; Figure 3 yes Figure 2 Side view of the middle structure; Figure 4 This is a schematic diagram of the support base.
[0020] In the diagram, 1-seeder frame, 2-slide frame, 3-fixed frame, 4-film roller, 5-pressure roller, 6-support base, 601-film roller groove, 602-avoidance groove, 603-pressure roller groove, 7-roller, 8-guide rail, 9-pull handle, 10-pressure plate, 11-handle screw. Detailed Implementation
[0021] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.
[0022] like Figures 1-4 As shown in the figure, this utility model provides a film-covered seeder that facilitates the replacement of film rollers, including a seeder frame 1. Two fixed frames 3 are symmetrically arranged at the rear bottom of the seeder frame 1 along the traveling direction. A slide 2 that can be pulled out and moved is installed between the two fixed frames 3. The pulling direction of the slide 2 is perpendicular to the traveling direction of the seeder frame 1. Support seats 6 are fixedly installed at both ends of the slide 2 along the length direction. Film rollers 4 and pressure rollers 5 are installed in sequence from bottom to top inside the support seats 6.
[0023] The fixed frame 3 consists of a longitudinal beam and a transverse beam. The bottom of the longitudinal beam is fixedly connected to the transverse beam vertically, and the top of the longitudinal beam is fixedly connected to the seeder frame 1. A guide rail 8 is fixedly installed on the upper surface of the transverse beam, and the guide rail 8 is set along the length of the transverse beam.
[0024] The slide 2 is equipped with rollers 7 on both sides of its bottom along its length, and the rollers 7 are slidably mounted above the guide rail 8.
[0025] A pull handle 9 is installed on the end of the carriage 2 along its length.
[0026] The bottom of the support base 6 is fixed to the slide 2 by bolts. The support base 6 has a film roller groove 601 inside. The bottom of the film roller groove 601 has a semi-circular structure. A clearance groove 602 communicating with the top side of the film roller groove 601 is provided, with a smooth transition between the clearance groove 602 and the film roller groove 601. The clearance groove 602 is located on the side of the support base 6. The shaft end of the film roller 4 enters the interior of the film roller groove 601 through the clearance groove 602.
[0027] The support base 6 has a pressure roller groove 603 at its top, which is set vertically and has a semi-circular bottom. The pressure roller groove 603 is used to install the shaft head of the pressure roller 5. During the film coating process, the pressure roller 5 gradually descends under the guidance of the pressure roller groove 603 to press the surface of the film roller 4 in real time.
[0028] A pressure plate 10 is installed on the top of the support base 6. The pressure plate 10 is located at the top opening of the pressure roller groove 603. The pressure plate 10 is installed on the top of the support base 6 by two handle screws 11. The pressure plate 10 is set to prevent the pressure roller 5 from coming off from the top.
[0029] This invention also includes a locking device (not shown in the figures), which fixes the slide 2 between two fixed brackets 3. When the slide 2 needs to be pulled out, the locking is released to allow the slide 2 to move. When the slide 2 returns to its original position, the position is locked to prevent it from sliding randomly during the lamination process.
[0030] The specific working principle of this utility model is as follows: Replacement process of film roller 4: When film roller 4 needs to be replaced, walk to the side of the seeder frame 1, grasp the pull handle 9, and pull the entire slide 2 horizontally along the guide rail 8; lift the pressure roller 5 upward along the pressure roller groove 603, and the shaft end of the old film roller 4 can be easily removed from the film roller groove 601 and the clearance groove 602 of the support seat 6; when installing the new film roller 4, simply insert the shaft end of the film roller 4 obliquely from the clearance groove 602, and let it slide naturally to the bottom of the film roller groove 601 by gravity; then the pressure roller 5 presses on the film roller 4 by gravity; push the slide 2 back to its original position and lock the position.
[0031] The film coating process: The film roller 4 rotates freely in the film roller groove 601 of the support seat 6. As the machine moves forward, the film is continuously pulled out. The pressure roller 5 presses on the surface of the film roller 4 below by its own weight. This pressure can provide film spreading force and stabilize the film roller 4. The pressure roller 5 can be adjusted adaptively and floats up and down with the change of the diameter of the film roller 4, always maintaining the pressure on the surface of the film roller.
[0032] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.
Claims
1. A film-mulching seeder that facilitates film roller replacement, characterized in that: The device includes a seeder frame (1), two symmetrically arranged fixed frames (3) are installed at the bottom rear of the seeder frame (1) along the direction of travel, and a slide (2) that can be pulled out and moved is installed between the two fixed frames (3). The pulling direction of the slide (2) is perpendicular to the direction of travel of the seeder frame (1). Support seats (6) are fixedly installed at both ends of the slide (2) along the length direction. A film roller (4) and a pressure roller (5) are installed in the support seat (6) from bottom to top.
2. The film-covered seeder as described in claim 1, characterized in that: The bottom of the support base (6) is fixed to the slide (2) by bolts. The support base (6) has a film roller groove (601) inside, and the bottom of the film roller groove (601) is a semi-circular structure.
3. The film-covered seeder as described in claim 2, characterized in that: A clearance groove (602) is provided on one side of the top of the membrane roller groove (601), and the clearance groove (602) and the membrane roller groove (601) are smoothly connected. The clearance groove (602) is located on the side of the support base (6).
4. The film-mulching seeder as described in claim 3, characterized in that: The support base (6) has a pressure roller groove (603) at the top. The pressure roller groove (603) is set in the vertical direction. The bottom of the pressure roller groove (603) is a semi-circular structure. The pressure roller groove (603) is used to install the shaft head of the pressure roller (5).
5. The film-covered seeder as described in claim 1, characterized in that: The fixed frame (3) consists of a longitudinal beam and a transverse beam. The bottom of the longitudinal beam is fixedly connected to the transverse beam vertically, and the top of the longitudinal beam is fixedly connected to the seeder frame (1).
6. The film-mulching seeder as described in claim 5, characterized in that: A guide rail (8) is fixedly installed on the upper surface of the crossbeam, and the guide rail (8) is set along the length of the crossbeam.
7. The film-mulching seeder as described in claim 6, characterized in that: The slide (2) has rollers (7) installed on both sides of the bottom along the length direction, and the rollers (7) are slidably installed above the guide rail (8).
8. The film-covered seeder as described in claim 1, characterized in that: The slide (2) has a pull handle (9) installed at its end along the length direction.
9. The film-mulching seeder as described in claim 1, characterized in that: The support base (6) is equipped with a pressure plate (10) on top, and the pressure plate (10) is located at the top opening of the pressure roller groove (603).
10. The film-mulching seeder as described in claim 9, characterized in that: The pressure plate (10) is mounted on top of the support base (6) by two handle screws (11).