A film mulching and soil covering mechanical structure and agricultural seeding machine

Abstract

The application discloses a film covering soil mechanical structure and belongs to the technical field of agricultural seeding machines. The film covering soil mechanical structure is prone to blockage and frequent shutdown for cleaning in the prior art. The technical scheme for solving the problem mainly comprises a traction frame, one soil turning component is arranged on each lateral side of the traction frame, a soil blocking component is further arranged between the two soil turning components on the traction frame, the soil blocking component and the soil turning component are arranged at intervals to form a film covering soil channel, a soil guiding component is arranged at a downstream position of the soil blocking component, the bottom of the soil guiding component is kept at a distance from the upper surface of the film to limit the maximum height of the film covering soil, and the soil guiding component is outwardly inclined towards the film on the side away from the advancing direction to guide the soil exceeding the preset covering soil height out of the film. The application mainly effectively reduces the blocking of the film covering soil mechanical structure, reduces the number of shutdown cleaning, and improves the operation efficiency. The application further discloses an agricultural seeding machine.

Description

Technical Field

[0001] This invention relates to the field of agricultural seeding technology, and in particular to a mechanical structure for covering soil with film and an agricultural seeding machine. Background Technology

[0002] Existing agricultural seeders with film-covering soil structures, such as utility model patents CN206744081U, CN220326392U, and CN213187431U, all utilize two side discs to guide soil into a roller, which then discharges the soil through the roller's outlet to cover the film. The outer ring of the roller maintains a certain distance from the film surface. However, when cultivating large root crops, these large root crops cannot be completely removed from the soil and remain undecomposed. Therefore, when using a roller-type structure for soil covering, the large root crops, once transported into the roller, cannot be discharged through the outlet and remain inside the roller, easily causing blockages and affecting the amount of soil discharged. This necessitates frequent machine stops to remove and clean the large root crops, impacting operational efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a mechanical structure for covering soil on a membrane, which solves the problem of frequent shutdowns for cleaning caused by easy clogging of existing soil covering mechanical structures. This invention effectively reduces the occurrence of clogging in soil covering mechanical structures, reduces the number of shutdowns for cleaning, and improves operational efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a mechanical structure for covering soil on a membrane, comprising a traction frame, wherein each of the traction frame is provided with a soil-moving component on its lateral sides, capable of moving soil to the upper surface of the membrane; a soil-retaining component is also provided on the traction frame between the two soil-moving components, the bottom of the soil-retaining component being able to contact the upper surface of the membrane; the soil-retaining component and the soil-moving component are spaced apart to form a soil-covering channel on the membrane; a soil-guiding component is provided downstream of the soil-retaining component, the bottom of the soil-guiding component maintaining a distance from the upper surface of the membrane to limit the maximum height of soil covering the membrane; the soil-guiding component is inclined toward the outside of the membrane on the side opposite to the direction of travel, so as to guide soil exceeding the preset soil-covering height to the outside of the membrane.

[0005] After adopting the above technical solution, the present invention has the following advantages: First, by setting up soil-moving components and soil-retaining components, the bottom of the soil-retaining components can contact the upper surface of the membrane. The soil-retaining components and soil-moving components are spaced apart to form a soil-covering channel on the membrane, which allows the soil to directly cover the upper surface of the membrane. The soil-covering channel on the membrane is open, so there is no problem of large root-like objects entering the closed channel (such as the roller in the prior art) and causing blockage during the entire transportation process. Therefore, the number of times the machine needs to be stopped for cleaning is reduced, and the work efficiency is improved. Second, the bottom of the soil-guiding component maintains a distance from the upper surface of the membrane to limit the maximum height of the soil covering on the membrane, which helps to make the soil covering thickness more uniform and consistent, thus benefiting crop growth. Finally, the soil-guiding component is inclined towards the outside of the membrane on the side opposite to the direction of travel to guide the soil exceeding the preset soil covering height to the outside of the membrane. Correspondingly, large root-like objects can also be guided to the outside of the membrane, reducing the amount of large root-like objects remaining on the surface of the membrane, thereby reducing damage to agricultural machinery during subsequent cultivation.

[0006] Furthermore, there are two retaining components, which can be fixed at different positions on the left and right sides of the traction frame, thereby changing the interval between the retaining components and the soil-removing components.

[0007] By adopting the aforementioned technical solution, the width of the soil covering channel on the membrane can be adjusted according to actual needs by adjusting the position of the retaining components, thereby adapting to the soil covering requirements of different membranes and crop planting needs.

[0008] Furthermore, the soil guiding component can be fixed at different positions along the height direction of the traction frame of the retaining component, so that the distance between the bottom of the retaining component and the upper surface of the membrane changes.

[0009] By adopting the aforementioned technical solution, the maximum height of the soil cover layer can be changed by adjusting the position of the soil guide component, thereby adapting to the requirements of different crop planting and changes in soil conditions. It can also further reduce the blockage of large root-like objects between the bottom of the retaining component and the upper surface of the membrane.

[0010] Furthermore, it includes multiple soil guiding components with different tilt angles, and the soil guiding components and retaining components are detachably connected.

[0011] By adopting the aforementioned technical solution and precisely controlling the tilt angle of the soil guiding components by replacing them with soil guiding components with different tilt angles, the direction of soil flow can be optimized, thereby better adapting to different film widths and crop planting needs, and also allowing large root and stem objects to be discharged more smoothly outside the film.

[0012] Furthermore, the retaining member is movably connected to the traction frame via a linkage mechanism, causing the retaining member to sway as the upper surface of the membrane undulates.

[0013] By adopting the aforementioned technical solution, the retaining component can swing according to the undulation of the upper surface of the membrane caused by soil conditions and terrain changes through the movable connection of the linkage mechanism. This allows the retaining component to adapt to different soil hardness and ground undulations, ensuring stable contact without damaging the membrane. It also helps to reduce the hard contact between the retaining component and the membrane, reducing the possibility of wear and damage.

[0014] Furthermore, the retaining member includes a blocking plate arranged along the height direction of the traction frame and a pressure plate arranged laterally along the traction frame. The blocking plate and the pressure plate are fixedly connected, and the pressure plate is located at the bottom of the blocking plate and slides in contact with the upper surface of the membrane.

[0015] Using the above technical solution, the blocking plates set along the height of the traction frame can effectively intercept soil and large root-like objects in the soil, thereby limiting the area of ​​soil covering the membrane. Secondly, the pressure plate set along the transverse direction of the traction frame increases the contact area with the pressure plate, making the force on the membrane more uniform, which can further intercept soil and large root-like objects in the soil. Finally, the sliding contact exerts more uniform pressure on the membrane than the rolling contact, further reducing damage to the membrane.

[0016] Furthermore, the linkage mechanism includes a first link and a second link located above the first link. The first end of the first link and the first end of the second link are both hinged to the same side of the traction frame. The tail end of the first link is hinged to the pressure plate. The blocking plate is provided with a movable hole arranged along the longitudinal direction of the traction frame. The tail end of the second link is slidably disposed in the movable hole, allowing the blocking plate and the pressure plate to swing relative to the traction frame.

[0017] With the above technical solution, since the baffle plate and the pressure plate are fixedly connected and swing synchronously with each other, a four-bar linkage design is formed by the first link, the second link, the traction frame, the baffle plate, and the pressure plate. The sliding of the tail end of the second link in the movable hole can drive the first link to move, thereby changing the contact angle between the pressure plate and the membrane. The pressure plate can automatically adjust its contact angle with the membrane according to soil conditions and topographic changes, and can also ensure that the pressure plate and the membrane always maintain appropriate contact, reducing gaps or over-pressure during the covering process.

[0018] Furthermore, the barrier plate is provided with a limiting member, which is located above the second link to limit the upward swing amplitude of the rear end of the retaining member.

[0019] By adopting the above technical solution, the limiting component restricts the upward swing amplitude of the rear end of the retaining member, thereby preventing the phenomenon of the blocking plate and the pressure plate flipping after being lifted into the air when the mechanical structure of the soil covering on the membrane turns.

[0020] Furthermore, the soil guiding component is fixed to the blocking plate, which is located on the side of the pressure plate near the soil guiding component.

[0021] By adopting the above technical solution, the retaining plate is set on the side closer to the soil-removing component, which can guide the soil flow more directly and reduce the accumulation of soil on the membrane plate, effectively avoiding the situation where the membrane is damaged due to excessive pressure from the membrane plate.

[0022] Another object of the present invention is to disclose an agricultural seeder, including a body, a seeder at the front of the body, and a soil covering mechanism on the film at the rear of the body. The soil covering mechanism on the film is the soil covering mechanism on the film described in any of the above technical solutions, and the seeder is located in front of the soil covering channel on the film.

[0023] The above technical solution, with the seeder positioned in front of the soil covering channel, helps the seeds under the film to be effectively covered by the soil, which helps improve the quality of soil covering. This allows the sowing and soil covering operations to be carried out continuously, reducing the waiting time between operation steps and improving the overall operation efficiency. The soil-pulling component, soil-retaining component, and soil-guiding component can also be adjusted according to the sowing position of the seeder, improving the adaptability of the machinery. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the mechanical structure for covering soil on a membrane in Embodiment 1 of the present invention;

[0026] Figure 2 This is an exploded view of the soil covering mechanical structure on the membrane in Embodiment 1 of the present invention;

[0027] Figure 3 This is a partial structural schematic diagram of the soil covering mechanical structure on the membrane in Embodiment 1 of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of the retaining member and the soil guiding member in Embodiment 1 of the present invention;

[0029] Figure 5 This is a top view of the retaining member and the soil guiding member in Embodiment 1 of the present invention;

[0030] Figure 6 This is a side view of the retaining member and the soil guiding member in Embodiment 1 of the present invention;

[0031] Figure 7 This is a front view of the retaining member and the guide member in Embodiment 1 of the present invention;

[0032] Figure 8 This is a schematic diagram of the structure of the soil covering mechanical structure on the membrane in the first angle of the present invention;

[0033] Figure 9 This is a schematic diagram of the structure of the membrane with soil covering mechanical structure in the second angle in Embodiment 1 of the present invention;

[0034] Figure 10 This is a schematic diagram of the membrane structure in Embodiment 1 of the present invention, where the soil covering mechanical structure on the membrane is positioned at the third angle.

[0035] Figure 11 This is an exploded view of the retaining member and the soil guiding member in Embodiment 1 of the present invention;

[0036] Figure 12 This is a schematic diagram of the agricultural seeder in Embodiment 2 of the present invention;

[0037] In the diagram, 100 is the machine body; 101 is the mounting rod; 102 is the traction rod; 103 is the connecting component; 104 is the spring; 105 is the first connecting sleeve; 106 is the seeder; 110 is the soil covering channel on the film; 200 is the soil-removing component; 201 is the soil-removing disc; 202 is the first connecting rod; 203 is the second connecting rod; 204 is the third connecting sleeve; 300 is the soil-retaining component; 301 is the blocking plate; 302 is the film-pressing plate; 303 is the first connecting rod; 304 is the second connecting rod; 305 is the movable hole; 306 is the limiting screw; 307 is the mounting hole; 308 is the second connecting sleeve; 400 is the soil-guiding component; 401 is the strip hole; 402 is the bolt; 403 is the nut; 500 is the film; 600 is the seed; and 700 is the soil. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0039] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0040] It should be understood that in the various embodiments of the present invention, the number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0041] It should be understood that in this invention, "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0042] It should be understood that in this invention, "multiple" refers to two or more. "And / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, X and / or Y can represent: X alone, X and Y simultaneously, or Y alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "Contains X, Y, and Z", "Contains X, Y, and Z" means that all three X, Y, and Z are contained; "Contains X, Y, or Z" means that one of X, Y, and Z is contained; "Contains X, Y, and / or Z" means that any one, two, or three of X, Y, and Z are contained.

[0043] The technical solution of the present invention will be described in detail below with reference to specific embodiments. The following specific embodiments may be combined or substituted with each other according to the actual situation, and the same or similar concepts or processes may not be described again in some embodiments.

[0044] Example 1:

[0045] like Figures 1 to 11 As shown, the present invention provides a mechanical structure for covering soil on a membrane, including a traction frame. On each of the lateral sides of the traction frame is a soil-moving component 200 capable of moving soil 700 to the upper surface of the membrane 500. A soil-retaining component 300 is also provided on the traction frame between the two soil-moving components 200. The bottom of the soil-retaining component 300 can contact the upper surface of the membrane 500. The soil-retaining component 300 and the soil-moving component 200 are spaced apart to form a soil-covering channel 110 on the membrane. A soil-guiding component 400 is provided downstream of the soil-retaining component 300. The bottom of the soil-guiding component 400 maintains a distance from the upper surface of the membrane 500 to limit the maximum height of the soil covering the membrane 500. The soil-guiding component 400 is inclined outwards towards the side opposite to the direction of travel to guide soil 700 exceeding the preset covering height to the outside of the membrane 500.

[0046] In this embodiment, by setting up a soil-moving component 200 and a soil-retaining component 300, the bottom of the soil-retaining component 300 can contact the upper surface of the membrane 500. The soil-retaining component 300 and the soil-moving component 200 are spaced apart to form a soil-covering channel 110 on the membrane, allowing the soil 700 to directly cover the upper surface of the membrane 500. The soil-covering channel 110 on the membrane is open, so there is no problem of large root-like objects entering the closed channel (such as the roller in the prior art) and causing blockage during the entire transportation process. Therefore, the number of downtime cleanings is reduced, and the operation efficiency is improved. Secondly, The bottom of the soil guiding component 400 is kept at a distance from the upper surface of the membrane 500 to limit the maximum height of the soil covering the membrane 500. This helps to make the soil covering thickness more uniform, which is beneficial to crop growth. Finally, the soil guiding component 400 is inclined towards the outside of the membrane 500 on the side opposite to the direction of travel to guide the soil 700 exceeding the preset soil covering height to the outside of the membrane 500. Correspondingly, it can also guide large root and stem objects to the outside of the membrane 500, reducing the number of large root and stem objects remaining on the surface of the membrane 500, thereby reducing the damage to agricultural machinery during subsequent cultivation.

[0047] It should be noted that in this embodiment, the soil covering mechanical structure on the membrane is mainly applicable to the soil covering of two rows of single membrane 500, and mainly covers the seeds 600 under the membrane 500. The end of the soil guiding component 400 extends beyond the membrane 500. When the soil covering mechanical structure on the membrane moves forward, the soil 700 exceeding the preset soil covering height is guided out of the membrane 500 along the soil guiding component 400.

[0048] Since different crops are positioned differently on the film 500, in this embodiment, two retaining members 300 are provided. The two retaining members 300 can be fixed at different positions on both sides of the traction frame. By adjusting the position of the retaining members 300, the interval between the retaining members 300 and the soil-removing members 200 can be changed, thereby adjusting the width of the soil covering channel 110 on the film according to actual needs. This adapts to the soil 700 coverage requirements of different films 500 and crop planting needs. The flexible adjustment capability helps reduce soil 700 clogging problems. For example, a smaller interval can be selected for crops with shallow roots, while a larger interval can be selected for crops with deep roots or those requiring more soil 700 coverage. It can also reduce the wear and tear on mechanical parts caused by frequent cleaning, thereby reducing maintenance costs.

[0049] Specifically, the traction frame includes a horizontally arranged mounting rod 101 and a longitudinally arranged traction rod 102. The traction rod 102 is also equipped with a connecting component 103 and a spring 104. One end of the traction rod 102 is connected to the middle position of the mounting rod 101 through a first connecting sleeve 105 to form a T-shaped structure. The structure is relatively lightweight and stable, with low production costs and convenient disassembly. This makes the weight distribution of the entire mechanical structure more balanced, enabling it to work stably under various terrain conditions and improving the adaptability of the machinery, especially when operating on uneven ground. The retaining member 300 is provided with a second connecting sleeve 308, which is sleeved on the mounting rod 101 and can slide relative to the mounting rod 101. After the second connecting sleeve 308 moves to a set position, it can be fixed by screws, thereby changing the interval between the retaining member 300 and the soil-removing member 200. The other end of the traction rod 102 is rotatably connected to the connecting part 103 and is connected by bolts to control the gap of the horizontal left and right swing of the traction frame. The spring 104 extends along the length of the traction rod 102, and one end of the spring 104 is connected to the traction rod. At the middle position of 102, the other end of the spring 104 is connected to the connecting part 103. The spring 104 pre-tightens the connection part 103 and the traction rod 102, thereby limiting the fluctuation of the mounting rod 101 and the soil-removing component 200 mounted on the mounting rod 101, so that the soil-removing component 200 always points downward. The swing of the traction rod 102 needs to overcome the pre-tightening force of the spring 104. Since the pre-tightening force is relatively large, even on uneven ground, the force of the soil-removing component 200 on the spring 104 is still less than the pre-tightening force of the spring 104, thus ensuring the soil-removing effect of the soil-removing component 200.

[0050] Since different crops require different soil covering thicknesses, in this embodiment, the soil guiding component 400 can be fixed at different positions along the height direction of the retaining component 300. By adjusting the position of the soil guiding component 400, the distance between the bottom of the retaining component 300 and the upper surface of the membrane 500 can be changed, thereby altering the maximum height of the soil covering layer. This adapts to the requirements of different crop plantings and changes in soil conditions. For example, a smaller soil covering thickness can be selected for shallow-rooted crops, while a larger soil covering thickness can be selected for deep-rooted crops. Precise control of the soil covering thickness helps reduce soil clogging problems and reduces wear on mechanical parts caused by frequent cleaning, thereby reducing maintenance costs.

[0051] Specifically, the soil guiding component 400 is provided with a strip hole 401 extending along the height direction of the traction frame, and the soil retaining component 300 is provided with an installation hole 307. The bolt 402 passes through the strip hole 401 first, and then through the installation hole 307. After adjusting the position of the bolt 402 in the strip hole 401, it is fixed by the nut 403, so that the soil guiding component 400 is fixed at the setting height position of the soil retaining component 300.

[0052] Furthermore, the soil guiding component 400 can be fixed at different positions of the retaining component 300 along the horizontal direction of the traction frame, so that the tilt angle of the soil guiding component 400 toward the outside of the membrane 500 can be changed. By precisely controlling the tilt angle of the soil guiding component 400, the flow direction of the soil 700 can be optimized, thereby better adapting to different membrane 500 widths and crop planting needs.

[0053] In this embodiment, the retaining members 300 are mainly arranged longitudinally along the traction frame to limit the coverage area of ​​the soil 700 on the membrane 500. Multiple soil guiding members 400 can be provided, with different inclination angles. Depending on the requirements, soil guiding members 400 with corresponding inclination angles can be installed on the retaining members 300. The soil guiding members 400 can be guide plates; when the soil covering machinery moves forward, soil 700 exceeding the preset covering height is guided out of the membrane 500 along the surface of the guide plate.

[0054] Furthermore, the soil-moving component 200 can be fixed at different heights on the traction frame to change the amount of soil moved, thus moving a corresponding amount of soil 700 onto the membrane 500. Additionally, the soil-moving component 200 can also rotate relative to the traction frame to change the tilt angle of the soil-moving component 200 relative to the membrane 500, thereby further changing the amount of soil moved and also changing the position where the moved soil 700 enters the membrane 500.

[0055] Specifically, the soil-removing component 200 includes a soil-removing disc 201, a first connecting rod 202, a second connecting rod 203, and a third connecting sleeve 204. The first connecting rod 202 is a hollow structure, and the second connecting rod 203 is sleeved on the first connecting rod 202. The first connecting rod 202 is fixedly connected to the soil-removing disc 201, and the second connecting rod 203 is fixedly connected to the third connecting sleeve 204. The second connecting rod 203 can be raised and lowered relative to the first connecting rod 202 to change the height of the soil-removing disc 201, and the second connecting rod 203 can be rotated relative to the first connecting rod 202 to change the angle of the soil-removing disc 201. The third connecting sleeve 204 can be sleeved on the mounting rod 101 and can move laterally relative to the mounting rod 101 to change the lateral position of the soil-removing disc 201.

[0056] Due to the influence of different terrains, the surface of the membrane 500 is uneven. In order to reduce the damage to the membrane 500 by the retaining member 300, the retaining member 300 is movably connected to the traction frame through a linkage mechanism, so that the retaining member 300 swings with the undulation of the upper surface of the membrane 500. This allows the retaining member 300 to adapt to different soil hardness and ground undulations, ensuring stable contact without damaging the membrane 500. This helps to reduce the hard contact between the retaining member 300 and the membrane 500, reducing the possibility of wear and damage.

[0057] The retaining structure 300 includes a blocking plate 301 arranged along the height of the traction frame and a pressure plate 302 arranged laterally along the traction frame. The blocking plate 301, arranged along the height of the traction frame, can effectively intercept soil 700 and large root vegetables, thereby limiting the soil coverage area on the membrane. Secondly, the pressure plate 302, arranged laterally along the traction frame, increases the contact area with the membrane, making the stress on the membrane 500 more uniform, and can further intercept soil 700 and large root vegetables. The blocking plate 301 and the pressure plate 302 are fixedly connected. The pressure plate 302 is located at the bottom of the blocking plate 301 and slides in contact with the upper surface of the membrane 500. The pressure plate 302 is similar to a slipper and can always work on the surface of the membrane 500. The sliding contact exerts more uniform pressure on the membrane 500 than the rolling contact, further reducing damage to the membrane 500.

[0058] It should be noted that the front and rear ends of the pressure plate 302 are rounded, which effectively avoids scratching the film.

[0059] Specifically, the linkage mechanism includes a first link 303 and a second link 304 located above the first link 303. The third connecting sleeve 204 is provided with a mounting bracket extending longitudinally. The first ends of the first link 303 and the first ends of the second link 304 are both hinged to the mounting bracket, and the first end of the second link 303 is higher than the first end of the first link 303. The tail ends of the first link 303 and the tail ends of the second link 304 are both located on the same side of the traction frame. The tail end of the first link 303 is hinged to the pressure plate 302. The blocking plate 301 is provided with a movable hole 305 arranged along the longitudinal direction of the traction frame. The tail end of the second link 304 slides... The movable device is set within the movable hole 305, allowing the blocking plate 301 and the pressing plate 302 to move relative to the traction frame. It is designed as a four-bar linkage through the first link 303, the second link 304, the traction frame, the blocking plate 301, and the pressing plate 302. The sliding of the tail end of the second link 304 in the movable hole 305 can drive the first link 303 to move, thereby changing the contact angle between the pressing plate 302 and the membrane 500. The pressing plate 302 can automatically swing according to the soil conditions and terrain changes, and can also ensure that the pressing plate 302 and the membrane 500 always maintain proper contact, reducing gaps or over-pressure during the covering process.

[0060] Because the four-bar linkage design allows for interlocking and flipping, a limiting member 306 is provided on the blocking plate 301 to prevent the blocking plate 301 and the pressure plate 302 from flipping. The limiting member 306 is located above the second linkage 304 to limit the upward swing amplitude of the rear end of the retaining member 300, thereby preventing the blocking plate 301 and the pressure plate 302 from flipping after being lifted into the air when the soil covering machinery structure on the membrane turns. Specifically, the limiting member 306 can be a limiting screw.

[0061] like Figure 8As shown, the tail end of the second connecting rod 304 is located in front of the movable hole 305, causing the front of the baffle plate 301 and the pressure plate 302 to be tilted higher than their rear sides; as Figure 9 As shown, the tail end of the second connecting rod 304 is located in the middle of the movable hole 305, so that the front and rear sides of the baffle plate 301 and the pressure plate 302 are at the same height and arranged horizontally; as Figure 10 As shown, the tail end of the second connecting rod 304 is located behind the movable hole 305, so that the front height of the baffle plate 301 and the pressure plate 302 is tilted lower than the rear height.

[0062] Since the pressure plate 302 is arranged horizontally, in order to avoid the soil 700 accumulating on the pressure plate 302 and causing excessive weight on the membrane 500, the soil guiding component 400 is fixed on the blocking plate 301. The blocking plate 301 is located on the side of the pressure plate 302 near the soil lifting component 200, thus forming an L-shaped structure. The blocking plate 301 can guide the flow of soil 700 more directly and reduce the accumulation of soil 700 on the pressure plate 302, effectively avoiding the situation where the pressure plate 302 puts too much pressure on the membrane 500 and causes damage to the membrane 500.

[0063] Understandably, in other embodiments, there may be only one retaining member, which blocks the soil by means of both sides of the retaining member.

[0064] Understandably, in other embodiments, the traction frame may also be equipped with multiple traction rods to improve the structural strength of the traction frame, especially for large loads requiring soil removal components.

[0065] Understandably, in other embodiments, multiple positioning holes of different heights can be provided on the retaining member, and the height of the soil guiding member can be adjusted by fixing it to different positioning holes with bolts.

[0066] Understandably, in other embodiments, the retaining member may also be inclined inward toward the center of the membrane from front to back.

[0067] Understandably, in other embodiments, the guide member can also rotate relative to the retaining member to change the tilt angle of the guide member relative to the frame, eliminating the need to carry multiple guide members and making it more convenient to use.

[0068] Understandably, in other embodiments, the retaining member can also be connected to the frame via an elastic element, and the expansion and contraction of the elastic element can enable the retaining member to adapt to different terrains and reduce damage to the membrane.

[0069] Understandably, in other embodiments, the baffle plate and the pressure plate may be an integrally formed structure, or a rectangular structure, which has higher structural strength.

[0070] Understandably, in other embodiments, the retaining member may also be a blocking plate and a pressure roller, with the pressure roller located on the side of the blocking plate away from the soil-removing member. The pressure roller and the membrane are subjected to rolling friction, resulting in less resistance.

[0071] Example 2:

[0072] like Figure 12 As shown, this embodiment discloses an agricultural seeder, including a body 100. A seeder 106 is provided at the front of the body 100, and a film covering soil mechanical structure is provided at the rear of the body 100. The film covering soil mechanical structure is the film covering soil mechanical structure described in any of the above technical solutions. The seeder 106 is located in front of the film covering soil channel 110, which helps the seeds 600 under the film 500 to be effectively covered by the soil 700, which helps to improve the soil covering quality, so that the sowing and soil covering operations can be carried out continuously, reducing the waiting time between operation links and improving the overall operation efficiency. The soil-pulling component 200, the soil-blocking component 300, and the soil-guiding component 400 can also be adjusted according to the sowing position of the seeder 106, which improves the adaptability of the machine.

[0073] It should be noted that in other embodiments, the agricultural seeder may also be a machine that does not include a seeder and can perform soil covering independently.

[0074] In addition to the preferred embodiments described above, the present invention has other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection claimed by the present invention.

Claims

1. A mechanical structure for covering soil onto a membrane, comprising a traction frame, wherein each of the traction frame has a soil-moving component on each of its lateral sides capable of moving soil to the upper surface of the membrane, characterized in that, A soil-retaining component is also provided on the traction frame between two soil-removing components. The bottom of the soil-retaining component can contact the upper surface of the membrane. The soil-retaining component and the soil-removing component are spaced apart to form a soil-covering channel on the membrane. A soil-guiding component is provided downstream of the soil-retaining component. The bottom of the soil-guiding component maintains a distance from the upper surface of the membrane to limit the maximum height of the soil cover on the membrane. The soil-guiding component is inclined towards the outside of the membrane on the side opposite to the direction of travel to guide soil exceeding the preset soil cover height to the outside of the membrane. The soil-retaining component is movably connected to the traction frame through a linkage mechanism so that the soil-retaining component swings with the undulation of the upper surface of the membrane. The retaining structure includes a blocking plate arranged along the height direction of the traction frame and a pressure plate arranged laterally along the traction frame. The blocking plate and the pressure plate are fixedly connected. The pressure plate is located at the bottom of the blocking plate and slides in contact with the upper surface of the membrane. The linkage mechanism includes a first link and a second link located above the first link. The first end of the first link and the first end of the second link are both hinged to the same side of the traction frame. The tail end of the first link is hinged to the pressure plate. The blocking plate is provided with a movable hole arranged along the longitudinal direction of the traction frame. The tail end of the second link is slidably disposed in the movable hole, allowing the blocking plate and the pressure plate to swing relative to the traction frame.

2. The mechanical structure for covering soil on a membrane according to claim 1, characterized in that, The retaining structure is provided in two parts, which are fixed at different positions on the left and right sides of the traction frame, thereby changing the interval between the retaining structure and the soil-removing structure.

3. The mechanical structure for covering soil on a membrane according to claim 1, characterized in that, The soil guiding component is fixed at different positions along the height direction of the retaining component, thereby changing the distance between the bottom of the retaining component and the upper surface of the membrane.

4. The mechanical structure for covering soil on a membrane according to claim 1, characterized in that, It includes multiple soil guiding components with different tilt angles, and the soil guiding components and retaining components are detachably connected.

5. The mechanical structure for covering soil on a membrane according to claim 1, characterized in that, The barrier plate is provided with a limiting member, which is located above the second link to limit the upward swing amplitude of the rear end of the retaining member.

6. The mechanical structure for covering soil on a membrane according to claim 1, characterized in that, The soil guiding component is fixed to the blocking plate, which is located on the side of the pressure plate near the soil guiding component.

7. An agricultural seeder, characterized in that, The device includes a body, a seeder is provided at the front of the body, and a soil covering mechanism is provided at the rear of the body. The soil covering mechanism is the soil covering mechanism as described in any one of claims 1 to 6, and the seeder is located in front of the soil covering channel.

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