Self-propelled rice seedling raising tray film raising and seedling raising integrated machine

Abstract

The application belongs to the technical field of agricultural machinery, and particularly relates to a self-propelled rice seedling raising machine with functions of free seedling tray and hemp film, which comprises a rack, a first demarcation mechanism, a seeding mechanism, and a second demarcation mechanism. The rack is detachably installed on a power machine. The first demarcation mechanism is arranged at the front end of the rack and used for arranging two demarcation strips in the rice seedling raising field along the advancing direction of the rack, so that a rice seedling raising area is formed between the two demarcation strips. The seeding mechanism is arranged in the rack and located behind the first demarcation mechanism, and used for sowing rice seeds into the rice seedling raising area. The second demarcation mechanism is arranged at the rear end of the rack and used for arranging a partition strip in the rice seedling raising area. The partition strip and the demarcation strips divide the rice seedling raising area into a plurality of adjacent square rice seedling raising areas. The soil covering mechanism is arranged at the rear end of the rack and used for covering the square rice seedling raising areas after the rice seeds are sown. The application can reduce the labor intensity while the rice seedling raising machine is used without seedling trays or hemp films.

Description

Technical Field

[0001] This invention belongs to the field of agricultural machinery technology, and in particular relates to a self-propelled rice seedling tray-free film-covered seedling raising machine. Background Technology

[0002] In rice seedling cultivation, current technologies generally rely on seedling trays or mulch film as the seedling carrier. While this traditional method provides a foundation for seedling growth to some extent, it also significantly increases production costs and labor complexity. On the one hand, specialized seedling trays or mulch film are consumable materials, requiring continuous financial investment for procurement, maintenance, and replacement, directly increasing the overall cost of rice cultivation, especially placing economic pressure on small-scale farmers. On the other hand, in practice, both the laying, retrieval, and cleaning of rigid seedling trays, and the laying and arrangement of mulch film, require a large amount of manual labor. Workers must perform repetitive physical labor in the fields, placing, aligning, and fixing the seedling carriers one by one, which is not only inefficient but also significantly increases labor intensity. Especially during busy farming seasons when manpower is scarce, such tedious operations further exacerbate the labor burden and affect the overall progress of seedling cultivation. Therefore, although seedling trays and mulch film are applicable in certain situations, their high requirements for cost and manpower investment remain a key issue that urgently needs optimization and improvement in the current rice seedling cultivation system.

[0003] Therefore, it is necessary to design a self-propelled rice seedling tray-free film-covered seedling raising machine to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a self-propelled rice seedling raising machine that eliminates the need for seedling trays or burlap slabs, thereby reducing the intensity of manual labor.

[0005] To achieve the above objectives, the present invention provides the following solution: a self-propelled rice seedling tray-free film-covered seedling raising machine, comprising:

[0006] The frame can be detachably mounted on the power machinery;

[0007] The first dividing mechanism is located inside the front end of the frame. The first dividing mechanism is used to arrange two dividing strips in the rice seedling raising field along the forward direction of the frame, and a rice seedling raising area is formed between the two dividing strips.

[0008] A seed-spreading mechanism is installed inside the frame and is located behind the first dividing mechanism. The seed-spreading mechanism is used to spread rice seeds into the rice seedling raising area.

[0009] The second dividing mechanism is located inside the rear end of the frame. The second dividing mechanism is used to arrange dividing strips in the rice seedling raising area. The dividing strips and the dividing strips divide the rice seedling raising area into several adjacent square seedling raising areas.

[0010] A soil covering mechanism is located at the rear end of the machine frame. The soil covering mechanism is used to cover the rice seedling raising area with soil after the rice seeds have been sown.

[0011] According to the present invention, a self-propelled rice seedling tray-free film-supported seedling raising machine is provided. The first dividing mechanism includes two roller release sections, which are rotatably disposed at the front end of the machine frame. The two roller release sections have the same structure. One end of the dividing strip is fixedly connected to each roller release section. The dividing strip is wrapped around the roller release section. The free end of the dividing strip passes over the guide section and is arranged in the rice seedling raising field. The guide section is fixedly connected to the machine frame.

[0012] According to the present invention, a self-propelled rice seedling tray-free film-supported seedling raising machine is provided, wherein the dividing strip is a rubber strip.

[0013] According to the present invention, a self-propelled rice seedling tray-free film-supported seedling raising machine is provided. The roller release section includes a first mounting seat, which is fixedly connected to the frame. One end of a rotating roller is rotatably connected to the first mounting seat. A dividing strip is wrapped around the rotating roller. The other ends of the two rotating rollers are rotatably connected to a second mounting seat. The second mounting seat is fixedly connected to the top of a fixing rod. The fixing rod is fixedly connected to the inner side wall of the frame.

[0014] According to the present invention, a self-propelled rice seedling tray-free film-supported integrated machine is provided. The guide part includes a guide roller and a connecting rod. The two ends of the guide roller are respectively rotatably connected to a third mounting seat. The third mounting seat is fixedly connected to the inner side wall of the frame. The guide roller is inclined. The connecting rod is vertically arranged and its top end is fixedly connected to the frame. The bottom end of the connecting rod is rotatably connected to a pressure roller. A central groove is circumferentially opened in the middle of the outer side wall of the pressure roller. The free end of the dividing strip passes sequentially between the guide roller and the inner side wall of the frame, and between the bottom end of the pressure roller and the rice seedling field. The dividing strip is located in the central groove.

[0015] According to the present invention, a self-propelled rice seedling tray-free film-supported seedling raising machine is provided. The second dividing mechanism includes a box body, which is fixedly connected to the rear end of the machine frame. The bottom wall of the box body has a strip-shaped hole and a notch. The strip-shaped hole is close to the front end of the machine frame and communicates with the notch. A vertical push-out part is fixedly connected to one end of the box body near the front end of the machine frame. The dividing strip is placed between the vertical push-out part and the inner side wall of the box body. A transverse push-out part is fixedly connected to the bottom end of the outer side of the box body and is slidably disposed in the notch.

[0016] Disclosed is a self-propelled ramie film seedling integrated machine for rice without seedling trays according to the present invention. The vertical pushing-out part comprises a partition plate, the partition plate is fixedly connected with the inner side wall of the box body, the partition plate is inverted L-shaped, the bottom end of the horizontal section of the partition plate is fixedly connected with the fixed end of a telescopic rod, the telescopic end of the telescopic rod is fixedly connected with an ejection plate, the ejection plate is located between the vertical section of the partition plate and the inner side wall of the box body, the ejection plate is inverted L-shaped, the horizontal section of the ejection plate is fixedly connected with the telescopic end of the telescopic rod, and the vertical section of the ejection plate is adapted to the strip-shaped hole.

[0017] Disclosed is a self-propelled ramie film seedling integrated machine for rice without seedling trays according to the present invention. The horizontal pushing-out part comprises a U-shaped plate, the U-shaped plate is fixedly connected with the outer bottom wall of the box body, one side inside the U-shaped plate is fixedly connected with a motor, an output shaft of the motor is coaxially and fixedly connected with one end of a screw rod, the other end of the screw rod is rotatably connected with a first fixing seat, the first fixing seat is fixedly connected with the U-shaped plate, the other side inside the U-shaped plate is provided with a guide rod, the guide rod is parallel to the screw rod, two ends of the guide rod are respectively fixedly connected with the U-shaped plate through a second fixing seat, the screw rod is rotatably connected with one end of a sliding rod, the other end of the sliding rod is slidably connected with the guide rod, the top end of the sliding rod is fixedly connected with a push plate, and the push plate is slidably arranged in the notch.

[0018] Disclosed is a self-propelled ramie film seedling integrated machine for rice without seedling trays according to the present invention. The soil covering mechanism comprises two L-shaped rods, the L-shaped rods are fixedly connected with the rear end of a frame, and a soil covering roller is rotatably connected between the bottom ends of the two L-shaped rods.

[0019] Disclosed is a self-propelled ramie film seedling integrated machine for rice without seedling trays according to the present invention. The sowing mechanism comprises a seed box, the seed box is fixedly connected with the frame, and a strip-shaped outlet is opened at the bottom end of the seed box.

[0020] Compared with the prior art, the present invention has the following advantages and technical effects:

[0021] By skillfully arranging the first dividing mechanism and the second dividing mechanism, the present invention successfully divides the traditional rice seedling raising field into a plurality of regular "square-shaped" seedling raising units. This partition management mode completely overturns the traditional practice of having to rely on seedling trays or ramie film for seedling raising in the past, and brings multiple significant advantages. On one hand, it directly eliminates the material consumption and procurement cost of seedling trays or ramie film, and significantly reduces the economic investment in the rice seedling raising link; on the other hand, it also completely eliminates the subsequent cumbersome manual placement and recovery operations, greatly reduces the labor intensity of workers, and realizes cost saving and efficiency improvement.

[0022] Building upon this foundation, the accompanying seed-sowing mechanism can precisely and evenly sow rice seeds along a pre-set path within the square-shaped seedling raising area, effectively solving the problem of uneven density that may occur with traditional manual sowing and laying a solid foundation for the balanced growth of seedlings. The subsequent soil-covering mechanism automatically and evenly covers the sown seeds with soil, providing a suitable germination environment, ensuring full contact between the rice seeds and the soil, and maintaining necessary humidity and temperature, thereby significantly improving the germination rate and survival rate.

[0023] In summary, this integrated system, through the coordinated operation of the three major stages of demarcation, sowing, and soil covering, not only significantly reduces production costs and labor intensity, but also improves the quality and efficiency of seedling cultivation through precision agricultural operations. It is a new rice seedling cultivation technology with great potential for widespread application. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort:

[0025] Figure 1 This is a schematic diagram of the overall invention;

[0026] Figure 2 This is a schematic diagram of the second demarcation mechanism of the present invention;

[0027] Figure 3 This is a schematic diagram of the bottom of the housing of the present invention;

[0028] Figure 4 This is a schematic diagram of the internal structure of the U-shaped plate of the present invention;

[0029] Figure 5 This is a cross-sectional view of the interior of the housing of the present invention.

[0030] The components are as follows: 1. Frame; 2. Wheels; 3. Fixing rod; 4. First mounting seat; 5. Second mounting seat; 6. Rotating roller; 7. Dividing strip; 8. Third mounting seat; 9. Guide roller; 10. Connecting rod; 11. Pressure roller; 12. Center groove; 13. Seed box; 14. Box body; 15. L-bar; 16. Soil covering roller; 17. Dividing strip; 18. U-shaped plate; 19. Strip hole; 20. Notch; 21. Motor; 22. Lead screw; 23. First fixing seat; 24. Guide rod; 25. Second fixing seat; 26. Sliding rod; 27. Push plate; 28. Dividing plate; 29. ​​Telescopic rod; 30. Top plate. Detailed Implementation

[0031] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Reference Figures 1 to 5 As shown, this invention provides a self-propelled rice seedling tray-free film-covered seedling raising machine, comprising:

[0034] The frame 1 is detachably mounted on the power machinery, and wheels 2 are respectively provided at the four corners of the bottom end of the frame 1;

[0035] The first dividing mechanism is set inside the front end of the frame 1. The first dividing mechanism is used to arrange two dividing strips 7 in the rice seedling raising field along the forward direction of the frame 1, and a rice seedling raising area is formed between the two dividing strips 7.

[0036] The seed-spreading mechanism is located inside the frame 1 and is situated behind the first dividing mechanism. The seed-spreading mechanism is used to spread rice seeds into the rice seedling raising area.

[0037] The second dividing mechanism is located inside the rear end of the frame 1. The second dividing mechanism is used to arrange the dividing strips 17 in the rice seedling raising area. The dividing strips 17 and the dividing strips 7 divide the rice seedling raising area into several adjacent square seedling raising areas.

[0038] The soil covering mechanism is located at the rear of the machine frame 1. The soil covering mechanism is used to cover the rice seedling raising area after the rice seeds are sown with soil.

[0039] Furthermore, the first dividing mechanism includes two roller feeding sections, which are rotatably arranged inside the front end of the frame 1. The two roller feeding sections have the same structure. One end of the dividing strip 7 is fixedly connected to the roller feeding section. The dividing strip 7 is wrapped around the roller feeding section. The free end of the dividing strip 7 is arranged in the rice seedling field after passing through the guide section. The guide section is fixedly connected to the frame 1.

[0040] Furthermore, the dividing strip 7 is a rubber strip.

[0041] Furthermore, the unloading roller section includes a first mounting base 4, which is fixedly connected to the frame 1. One end of the rotating roller 6 is rotatably connected to the first mounting base 4, and a dividing strip 7 is wrapped around the rotating roller 6. The other ends of the two rotating rollers 6 are rotatably connected to a second mounting base 5, which is fixedly connected to the top of the fixing rod 3. The fixing rod 3 is fixedly connected to the inner wall of the frame 1.

[0042] Furthermore, the guide section includes a guide roller 9 and a connecting rod 10. The two ends of the guide roller 9 are rotatably connected to a third mounting seat 8, which is fixedly connected to the inner wall of the frame 1. The guide roller 9 is inclined, and the connecting rod 10 is vertically arranged with its top end fixedly connected to the frame 1. The bottom end of the connecting rod 10 is rotatably connected to a pressure roller 11. A central groove 12 is circumferentially opened in the middle of the outer wall of the pressure roller 11. The free end of the dividing strip 7 passes through the guide roller 9 and the inner wall of the frame 1, and the bottom end of the pressure roller 11 and the rice seedling bed in sequence. The dividing strip 7 is located in the central groove 12.

[0043] Before sowing and raising seedlings, the process is first carried out manually. The free end of the dividing strip 7 is pulled out and passed through the guide roller 9 and the inner wall of the frame 1, and then through the bottom end of the pressure roller 11 and the rice seedling field. When the dividing strip 7 passes through the bottom end of the pressure roller 11 and the rice seedling field, it needs to be located in the central groove 12. Then the free end of the dividing strip 7 is fixed in the seedling field. As the integrated machine moves forward, the dividing strip 7 gradually unfolds and is fixed in the field under the action of the pressure roller 11. The rice seedling area is formed between the two dividing strips 7.

[0044] Furthermore, the second dividing mechanism includes a housing 14, which is fixedly connected to the rear end of the frame 1. The bottom wall of the housing 14 has a strip hole 19 and a notch 20. The strip hole 19 is close to the front end of the frame 1 and communicates with the notch 20. A vertical push-out part is fixedly connected to one end of the housing 14 near the front end of the frame 1. A dividing strip 17 is placed between the vertical push-out part and the inner side wall of the housing 14. A transverse push-out part is fixedly connected to the bottom end of the housing 14 and slides within the notch 20.

[0045] Furthermore, the vertical ejection section includes a partition plate 28, which is fixedly connected to the inner wall of the housing 14. The partition plate 28 is inverted L-shaped. The bottom end of the horizontal section of the partition plate 28 is fixedly connected to the fixed end of the telescopic rod 29. The telescopic end of the telescopic rod 29 is fixedly connected to the ejection plate 30. The ejection plate 30 is located between the vertical section of the partition plate 28 and the inner wall of the housing 14. The ejection plate 30 is inverted L-shaped and its horizontal section is fixedly connected to the telescopic end of the telescopic rod 29. The vertical section of the ejection plate 30 is adapted to the strip hole 19.

[0046] Furthermore, the transverse push-out section includes a U-shaped plate 18, which is fixedly connected to the outer bottom wall of the housing 14. A motor 21 is fixedly connected to one side of the interior of the U-shaped plate 18. One end of a lead screw 22 is coaxially fixedly connected to the output shaft of the motor 21. The other end of the lead screw 22 is rotatably connected to a first fixed seat 23, which is fixedly connected to the U-shaped plate 18. A guide rod 24 is provided on the other side of the interior of the U-shaped plate 18. The guide rod 24 is parallel to the lead screw 22. Both ends of the guide rod 24 are fixedly connected to the U-shaped plate 18 through a second fixed seat 25. One end of a slide rod 26 is rotatably connected to the lead screw 22. The other end of the slide rod 26 is slidably connected to the guide rod 24. A push plate 27 is fixedly connected to the top of the slide rod 26 and is slidably disposed in the notch 20.

[0047] Several separator strips 17 are placed sequentially inside the housing 14, with the bottom separator strip 17 contacting the top of the push plate 27. Then, the motor 21 controls the screw 22 to rotate, driving the slide rod 26 and push plate 27 to move to the rear end of the frame 1. This causes the bottom row of separator strips 17 to fall onto the U-shaped plate 18. The motor 21 then controls the screw 22 to rotate in the opposite direction, gradually pushing the bottom row of separator strips 17 towards the slotted hole 19. The size of the separator strips 17 matches the slotted hole 19. When the outermost separator strip 17 is pushed directly above the slotted hole 19, the telescopic rod 29 extends, causing the ejector plate 30 to descend, pushing the separator strip 17 out of the slotted hole 19 and inserting it into the seedbed where rice seeds have already been sown. Two separator strips 17 and two dividing strips 7... The area within is the square-shaped seedling raising area. When the bottommost separator 17 is gradually pushed into the strip hole 19, the horizontal section of the push plate 27 supports the second-to-last column of separators 17, preventing them from falling and affecting the normal pushing of the bottommost separator 17. The distance between the bottommost end of the vertical section of the separator 28 and the U-shaped plate 18 only allows a single column of separators 17 to pass through. In this way, when the bottommost separator 17 is pushed into the strip hole 19, the second-to-last column of separators 17 remains stably in the box 14. When the bottommost separator 17 is completely pushed out, the motor 21 again controls the screw 22 to drive the push plate 27 to move to the rear end of the frame 1, so that the second-to-last column of separators 17 falls onto the U-shaped plate 18, and is then pushed into the strip hole 19 and pushed out by the push plate 27.

[0048] Furthermore, the soil covering mechanism includes two L-bars 15, which are fixedly connected to the rear end of the frame 1, and a soil covering roller 16 is rotatably connected between the bottom ends of the two L-bars 15.

[0049] Furthermore, the seed-spreading mechanism includes a seed box 13, which is fixedly connected to the frame 1, and a strip-shaped outlet is provided at the bottom of the seed box 13.

[0050] This invention is a highly efficient agricultural equipment that integrates seedbed opening, sowing, separation, and soil covering. Its working process is a continuous, automated, and precise operation cycle. The entire working process begins with a power machine (such as a tractor) pulling the integrated machine into a pre-prepared rice seedling bed and moving forward according to a preset speed and route.

[0051] Phase 1: Field preparation and laying of boundary strips

[0052] Before the machine officially enters the field to begin seedling cultivation, a crucial manual preparatory operation is required—laying the dividing strips. The operator first manually pulls out the free ends of the two dividing strips 7 (usually rubber strips with a certain strength and flexibility) wrapped around the two independent discharge rollers 6. The pulled-out dividing strips 7 pass through the gap between the guide roller 9 located on the inner front side of the frame 1 (its inclined setting ensures the correct discharge direction of the dividing strips) and the inner wall of the frame, and then pass downwards through the gap between the bottom end of the pressure roller 11 and the field surface. During this process, the dividing strips 7 must be accurately embedded in the circumferentially circumferentially opened central groove 12 on the outer wall of the pressure roller 11. The function of the central groove is to ensure the stable position of the dividing strips during installation and prevent lateral displacement. Finally, the operator fixes the free ends of the two dividing strips 7 into the soil at the starting end of the field.

[0053] As the integrated power machinery traction machine begins to move forward at a constant speed, the entire frame 1 moves accordingly. Since the free end of the dividing strip 7 is fixed, it continuously pulls out the dividing strip from the rotating roller 6 as the frame moves forward. Under the weight of the frame and the connecting rod 10, the pressure roller 11 presses firmly against the field surface, clearly and smoothly pressing or adhering the pulled-out dividing strip 7 to the surface soil of the seedling bed, forming two straight, parallel longitudinal boundaries. The area between these two dividing strips 7 is then precisely defined as the rice seedling raising area. The release roller section ensures smooth and unobstructed release of the dividing strip.

[0054] Phase Two: Precision Sowing of Rice Seeds

[0055] Following the first dividing mechanism, the seed-scattering mechanism begins operation. The seed box 13, located above the frame 1, stores pre-prepared rice seeds. As the machine moves forward, the seeds are evenly and continuously scattered through a strip-shaped outlet at the bottom of the seed box 13, under the influence of gravity and possible slight vibrations (from uneven ground or machine movement). The length of the strip-shaped outlet is typically adapted to the width of the seedling area, ensuring that the rice seeds cover the entire width of the seedling area. The scattered rice seeds are precisely distributed on the soil surface of the rice seedling area, defined by two dividing strips 7. The amount of seeds scattered can be controlled by pre-adjusting the size of the strip-shaped outlet or by installing a metering device to meet the sowing density requirements of different varieties and agronomical practices.

[0056] Third stage: Laying dividing strips to form seedling trays

[0057] After the rice seeds are evenly sown into the seedling raising area, the machine continues to move forward, and the operation enters the critical longitudinal separation stage, which is executed by the second separation mechanism. The core of this mechanism is a box 14 installed at the rear end inside the frame 1, which contains a large number of separator strips 17 (most of these separator strips are also rubber strips with uniform size and specifications).

[0058] Storage and preparation of the dividers: All dividers 17 are stacked vertically inside the box 14, located between the vertical section of the divider plate 28 (inverted L-shape) and the side wall of the box. The bottom wall of the box has a strip-shaped hole 19 and a notch 20 communicating with it.

[0059] Lowering of the single-row divider: When the mechanism is started, the motor 21 of the transverse push-out section works first, driving the lead screw 22 to rotate, which in turn drives the slide rod 26 connected to the lead screw nut and the push plate 27 fixed at its top to move along the guide rod 24 to the rear of the machine (i.e., the outer end of the notch 20). When the push plate 27 completely exits the bottom projection area of ​​the housing 14, the bottom row of dividers 17 falls under the action of gravity and lands on the bottom plate of the U-shaped plate 18. At this time, the gap height between the bottom end of the vertical section of the divider 28 and the bottom plate of the U-shaped plate 18 is precisely designed to allow only a single row of dividers to pass through, thereby effectively preventing other dividers above from falling further.

[0060] Lateral pushing of the separator strips: Motor 21 then reverses, driving screw 22 to move slide rod 26 and push plate 27 forward of the frame (i.e., towards the strip hole 19). Push plate 27 pushes the row of separator strips 17 that has just fallen onto U-shaped plate 18 to slide on the bottom plate of U-shaped plate 18.

[0061] Vertical ejection and placement of the dividing strips: When the outermost dividing strip 17 in the pushed row (the one first pushed above the strip hole 19) moves to a position aligned with the strip hole 19, the vertical ejection part actuates. The telescopic end of the telescopic rod 29 (which can be a cylinder or a hydraulic cylinder) extends, pushing the ejector plate 30 (inverted L-shape) downward. The vertical section of the ejector plate 30 quickly passes through the strip hole 19, decisively pushing the aligned dividing strip 17 downward, so that it is vertically inserted into the seedbed soil below where seeds have been sown. This inserted dividing strip 17 intersects with the longitudinal dividing strips 7 previously laid on both sides, together dividing the seedbed into independent square-shaped seedbed areas (or seedbed grids).

[0062] Cyclic operation: Pusher plate 27 continues to move forward, pushing the next separator strip 17 above the strip hole 19. Telescopic rod 29 then pushes it out again, repeating this cycle until the entire row of separator strips 17 is pushed out and inserted into the field. After one row is laid out, motor 21 drives pusher plate 27 to retreat to the initial position, allowing the next row of separator strips 17 to fall, starting a new round of push-out cycle. This process is synchronized with the machine's forward speed, ensuring that the separator strips are inserted into the field at fixed intervals, forming a neat and uniform seedling grid.

[0063] Fourth stage: Uniform soil covering

[0064] After all rice seeds have been sown and the dividing strips have been laid, the process enters its final step – covering with soil. The soil covering mechanism, located at the rear of the machine frame 1, begins to operate. This mechanism mainly consists of two L-shaped rods 15 fixed to the rear of the machine frame and a soil covering roller 16 rotatably connected between their bottom ends. As the machine moves forward, the soil covering roller 16 rolls across the field surface, evenly covering the surface of the freshly sown and divided seedling areas with fine soil. The purpose of covering with soil is to protect the rice seeds from being pecked by birds, prevent them from losing their viability due to sun exposure or moisture evaporation, and provide a suitable temperature, humidity, and soil environment for seed germination. At the same time, the thin layer of soil also helps maintain the shape of the seedling grids.

[0065] The entire process is now complete, following a full cycle: laying two longitudinal dividing strips → sowing rice seeds between the dividing strips → inserting transverse dividing strips to form a grid → finally covering with soil. The powered machinery continues to move forward, and these four stages are performed continuously and automatically. The first dividing mechanism continuously releases dividing strips, defining a continuous seedling raising area; the seed-sowing mechanism continuously sows seeds; the second dividing mechanism intermittently and rhythmically lays out the dividing strips; and the soil-covering rollers continuously perform the soil-covering operation. This design ingeniously integrates the opening of seedbeds, sowing, dividing, and covering processes in rice seedling raising using a mulch film, greatly improving production efficiency, reducing labor costs, ensuring the standardization and normalization of seedling raising, and laying a solid foundation for subsequent seedling growth management and mechanized seedling harvesting and transplanting.

[0066] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0067] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope of the present invention.

Claims

1. A self-propelled rice seedling tray-free film-covered seedling raising machine, characterized in that, include: The frame (1) is detachably mounted on the power machinery; The first dividing mechanism is set inside the front end of the frame (1). The first dividing mechanism is used to arrange two dividing strips (7) in the rice seedling raising field along the forward direction of the frame (1). A rice seedling raising area is formed between the two dividing strips (7). A seed-spreading mechanism is installed inside the frame (1), and the seed-spreading mechanism is located behind the first dividing mechanism. The seed-spreading mechanism is used to spread rice seeds into the rice seedling raising area. The second dividing mechanism is located inside the rear end of the frame (1). The second dividing mechanism is used to arrange dividing strips (17) in the rice seedling raising area. The dividing strips (17) and the dividing strips (7) divide the rice seedling raising area into several adjacent square seedling raising areas. The soil covering mechanism is located at the rear end of the frame (1) and is used to cover the rice seedling raising area after sowing rice seeds with soil. The first dividing mechanism includes two roller feeding sections, which are rotatably disposed inside the front end of the frame (1). The two roller feeding sections have the same structure. One end of the dividing strip (7) is fixedly connected to the roller feeding section. The dividing strip (7) is wrapped around the roller feeding section. The free end of the dividing strip (7) is arranged in the rice seedling field after passing through the guide. The guide is fixedly connected to the frame (1). The second dividing mechanism includes a housing (14), which is fixedly connected to the rear end of the frame (1). The bottom wall of the housing (14) has a strip hole (19) and a notch (20). The strip hole (19) is close to the front end of the frame (1) and communicates with the notch (20). A vertical push-out part is fixedly connected to one end of the housing (14) near the front end of the frame (1). The dividing strip (17) is placed between the vertical push-out part and the inner side wall of the housing (14). A transverse push-out part is fixedly connected to the bottom end of the housing (14) and slides within the notch (20).

2. The self-propelled rice seedling tray-free film-supported seedling raising machine according to claim 1, characterized in that, The dividing strip (7) is a rubber strip.

3. The self-propelled rice seedling tray-free film-supported seedling raising machine according to claim 1, characterized in that, The unloading section includes a first mounting base (4), which is fixedly connected to the frame (1). One end of the rotating roller (6) is rotatably connected to the first mounting base (4). The dividing strip (7) is wrapped around the rotating roller (6). The other ends of the two rotating rollers (6) are rotatably connected to a second mounting base (5). The second mounting base (5) is fixedly connected to the top of the fixing rod (3). The fixing rod (3) is fixedly connected to the inner wall of the frame (1).

4. The self-propelled rice seedling tray-free film-supported seedling raising machine according to claim 1, characterized in that, The guide section includes a guide roller (9) and a connecting rod (10). The two ends of the guide roller (9) are rotatably connected to a third mounting base (8). The third mounting base (8) is fixedly connected to the inner wall of the frame (1). The guide roller (9) is inclined. The connecting rod (10) is vertically arranged and its top end is fixedly connected to the frame (1). The bottom end of the connecting rod (10) is rotatably connected to a pressure roller (11). The outer side wall of the pressure roller (11) has a central groove (12) circumferentially opened in the middle. The free end of the dividing strip (7) passes through the guide roller (9) and the inner wall of the frame (1) in sequence, and between the bottom end of the pressure roller (11) and the rice seedling field. The dividing strip (7) is located in the central groove (12).

5. The self-propelled rice seedling tray-free film-supported seedling raising machine according to claim 1, characterized in that, The vertical ejection section includes a partition plate (28), which is fixedly connected to the inner wall of the box (14). The partition plate (28) is inverted L-shaped. The bottom of the horizontal section of the partition plate (28) is fixedly connected to the fixed end of the telescopic rod (29). The telescopic end of the telescopic rod (29) is fixedly connected to the ejection plate (30). The ejection plate (30) is located between the vertical section of the partition plate (28) and the inner wall of the box (14). The ejection plate (30) is inverted L-shaped and its horizontal section is fixedly connected to the telescopic end of the telescopic rod (29). The vertical section of the ejection plate (30) is adapted to the strip hole (19).

6. The self-propelled rice seedling tray-free film-supported seedling raising machine according to claim 5, characterized in that, The transverse push-out section includes a U-shaped plate (18), which is fixedly connected to the outer bottom wall of the housing (14). A motor (21) is fixedly connected to one side of the inside of the U-shaped plate (18). One end of a lead screw (22) is coaxially fixedly connected to the output shaft of the motor (21). The other end of the lead screw (22) is rotatably connected to a first fixed seat (23). The first fixed seat (23) is fixedly connected to the U-shaped plate (18). The other side of the inside of the U-shaped plate (18) is provided with... A guide rod (24) is provided, which is parallel to the lead screw (22). Both ends of the guide rod (24) are fixedly connected to the U-shaped plate (18) through the second fixed seat (25). The lead screw (22) is rotatably connected to one end of a slide rod (26). The other end of the slide rod (26) is slidably connected to the guide rod (24). A push plate (27) is fixedly connected to the top of the slide rod (26). The push plate (27) is slidably disposed in the notch (20).

7. The self-propelled rice seedling tray-free film-supported seedling raising machine according to claim 1, characterized in that, The soil covering mechanism includes two L-bars (15), which are fixedly connected to the rear end of the frame (1), and a soil covering roller (16) is rotatably connected between the bottom ends of the two L-bars (15).

8. The self-propelled rice seedling tray-free film-supported seedling raising machine according to claim 1, characterized in that, The seed-spreading mechanism includes a seed box (13), which is fixedly connected to the frame (1), and the bottom of the seed box (13) has a strip-shaped outlet.

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