A multi-grain type adapted rice precision drill device

Abstract

The application discloses a kind of multi-granular type adaptation's rice precision strip sowing device, it is related to agricultural machinery technical field, including: main frame, main frame is as the installation main body of strip sowing device;Pressure groove mechanism, it is installed in the lower part of main frame, for to seedling tray extrusion sowing groove before sowing;Soil pulley, it is installed in the lower part of main frame and located at the rear of pressure groove mechanism, for to soil after sowing is closed;Mobile roller, it is installed in the lower part of main frame, for driving device movement;Fertilizer bin, it is installed in the upper part of main frame, for to soil after soil turning adds fertilizer;Sowing bin, it is installed in the upper part of main frame, it is stored with the seed to be sown in, for to seed quantitative sowing;The application is adapted to different granular seeds by setting adjustable discharge mechanism, and realizes quantitative sowing in combination with material falling mechanism, effectively solve the problem of uneven sowing caused by granular difference.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, specifically to a precision strip seeding device for rice with multiple grain types. Background Technology

[0002] In agricultural production, the row seeder is a key seeding equipment. Its working principle relies on the walking wheels to drive the seed metering wheel to rotate, so that the seeds are discharged from the seed cups of the seed box into the seed delivery tube according to the set seeding amount. The seeds fall into the pre-dug soil furrows through the furrow opener, and then the soil covering and compaction are completed by the soil covering and compaction device, finally forming neat parallel and equidistant rows of crops.

[0003] However, existing row seeders face multiple technical bottlenecks in practical applications. Due to the significant differences in the grain shape of hybrid rice seeds, including inconsistencies in size, shape, and density, traditional equipment lacks a dynamic adjustment mechanism and cannot accurately control the seed discharge speed according to specific grain shape characteristics. This leads to inaccurate quantity distribution of seeds of different sizes during sowing. For example, small-grained seeds are easily over-sown while large-grained seeds are under-sown, directly affecting sowing uniformity and subsequent crop germination rate.

[0004] Meanwhile, existing equipment completely lacks a screening function in the seed delivery process, failing to effectively separate impurities, broken grains, or underdeveloped seeds. This results in substandard seeds mixing into the soil, causing problems such as decreased sowing quality, gaps in seedling rows, and uneven crop growth. These issues are particularly prominent in hybrid rice cultivation, as hybrid rice requires higher sowing precision, and current technologies have failed to provide a comprehensive solution suitable for multiple seed types, severely restricting the implementation effectiveness of precision sowing and improving agricultural production efficiency. Summary of the Invention

[0005] The purpose of this invention is to solve the problem of uneven sowing caused by differences in grain shape, and to propose a precision row sowing device for rice with multiple grain shape adaptability.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A multi-grain-type adaptive precision rice seeding device, comprising:

[0008] The main frame serves as the mounting body for the strip seeding device;

[0009] The grooving mechanism, installed at the bottom of the main frame, is used to press the seedling tray into the groove for sowing before sowing.

[0010] The soil-binding pulley, installed at the bottom of the main frame and behind the pressing mechanism, is used to gather the soil after sowing.

[0011] Movable rollers, which are installed at the bottom of the main frame, are used to drive the device to move;

[0012] The fertilizer bin, installed on the upper part of the main frame, is used to add fertilizer after the soil has been turned over;

[0013] The seed hopper, installed on the upper part of the main frame, stores seeds to be sown and is used to sow seeds in a quantitative manner.

[0014] The seeding hopper includes a support hopper fixedly installed on the upper part of the main frame. The support hopper contains a storage hopper for storing seeds. The support hopper is equipped with a discharge mechanism for adjusting the discharge of seeds of different particle sizes stored in the storage hopper. The lower end of the support hopper is equipped with a discharging mechanism for quantitatively discharging seeds. The outlet of the discharging mechanism is connected to a seeding pipe, and the outlet of the seeding pipe is located in front of the soil mixing pulley.

[0015] Preferably, the fertilizer silo is provided with several fertilizer funnels for directional discharge of fertilizer, and the outlet of the fertilizer funnel is a ring structure, so that the fertilizer is separated from the seeds.

[0016] Preferably, the storage bin includes a square bin body fixedly installed in the support bin, the bottom of the square bin body is provided with a V-shaped bin body, the bottom of the V-shaped bin body is provided with a seed outlet, and the discharge mechanism is installed on the outer periphery of the V-shaped bin body to adjust the size of the seed outlet to adapt to the discharge of seeds of different particle sizes.

[0017] Preferably, the discharge mechanism includes two sets of baffle guide rails fixedly installed on the outer wall of the V-shaped hopper. Two sets of discharge baffles are slidably installed between the baffle guide rails and the V-shaped hopper. The two sets of discharge baffles are distributed in a V-shape. The spacing at the bottom of the V-shape can be adjusted by sliding the discharge baffles to accommodate the discharge of seeds of different specifications.

[0018] Preferably, the discharge mechanism further includes a driving gear and a driven gear rotatably mounted on the inner wall of the support chamber. The driving gear and the driven gear are meshed together. A transmission rack is fixedly provided on both sets of discharge baffles. The driving gear and the driven gear are meshed with the transmission rack on the same side. A discharge motor is fixedly installed on the outer wall of the support chamber. The discharge motor is used to drive the driving gear to rotate.

[0019] Preferably, the feeding mechanism includes a receiving hopper fixedly installed at the lower end of the support bin for receiving seeds falling from the storage bin. The receiving hopper has multiple hoppers corresponding to the number of sowing tubes. A feeding valve body is provided at the outlet of the receiving hopper, and a valve body outlet connected to the sowing tube is provided at the bottom of the feeding valve body. A valve body shaft is rotatably installed on the feeding valve body, and a number of valve body blades arranged in a ring array are provided on the outer periphery of the valve body shaft. The multiple valve body blades divide and measure the falling seeds, thereby ensuring uniform seed sowing.

[0020] Preferably, a chamber for temporarily storing a small amount of seeds is formed between adjacent valve body blades, and a screening mechanism for screening the seeds is provided in the chamber;

[0021] The screening mechanism includes a screening arc plate disposed in the middle of the chamber. The screening arc plate is provided with a number of screening holes for screening seeds. Both ends of the screening arc plate are provided with side baffles to seal the chamber, so that the seeds roll on the screening arc plate while the valve body blades rotate. A screen hole sealing plate for blocking the screening holes is slidably disposed on the side of the screening arc plate near the valve body shaft. When the chamber is located at the position of one chamber before the inlet of the discharge valve body, the screening holes are opened until they are closed when the chamber is rotated to the position of one chamber before the outlet of the valve body, so as to prevent the screened seeds from falling back and continue to complete the sowing.

[0022] Preferably, a connecting shaft is rotatably mounted on the side baffle, and an adjusting gear is fixedly mounted on the connecting shaft. The screen hole sealing plate is fixedly connected to the connecting shaft through a sealing plate bracket. The inner side of the end cover of the discharge valve body is provided with an outer rack and an inner rack for driving the adjusting gear to rotate. The teeth of the outer rack and the inner rack face opposite directions, thereby driving the connecting shaft to rotate in the forward and reverse directions respectively, realizing the reciprocating drive of the screen hole sealing plate, thereby controlling the opening and closing of the screening holes.

[0023] Preferably, the upper end of the storage silo is provided with a stirring support, and the stirring support is provided with a stirring mechanism for preventing seed blockage; the stirring mechanism includes multiple stirring shafts slidably connected to the stirring support, and a square silo is fixedly connected to the upper end of multiple sets of V-shaped silos. Several stirring support rods are provided at the lower part of the stirring shafts. The stirring support rods are driven to stir inside the seeds by the lifting and lowering movement of the stirring shafts, so as to avoid seed blockage.

[0024] Preferably, the support chamber is provided with a drive mechanism for driving the material feeding mechanism and the stirring mechanism; the drive mechanism includes a drive shaft connecting multiple sets of valve body shafts, and a drive motor for driving the drive shaft to rotate is fixedly installed on the support chamber; and a linkage shaft is rotatably installed on the outer wall of the support chamber, the linkage shaft is connected to the drive shaft through a belt drive component, a linkage turntable is fixedly installed on the linkage shaft, a turntable pin is fixedly provided near the edge of the linkage turntable, a linkage connecting rod is rotatably installed on the turntable pin, and the end of the linkage connecting rod away from the turntable pin is rotatably connected to the stirring plate through a stirring pin.

[0025] The beneficial effects of this invention are as follows: By setting an adjustable discharge mechanism to adapt to seeds of different grain shapes, and combining it with a feeding mechanism to achieve quantitative sowing, the problem of uneven sowing caused by differences in grain shape is effectively solved. This invention has the advantages of solving the problem of uneven sowing caused by differences in the grain shape of hybrid rice seeds, achieving precision sowing, improving sowing uniformity and germination rate, and reducing the phenomenon of missing seedlings and broken rows. Attached Figure Description

[0026] The invention will now be further described with reference to the accompanying drawings.

[0027] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0028] Figure 2 This is an isometric structural schematic diagram of the entire invention;

[0029] Figure 3 This is a three-dimensional structural diagram of the seed hopper of the present invention;

[0030] Figure 4 This is an isometric structural diagram of the seed hopper of the present invention;

[0031] Figure 5 This is a schematic diagram of the main structure of the seed hopper of the present invention;

[0032] Figure 6 This is the present invention. Figure 5 Schematic diagram of the cross-sectional structure along the AA direction;

[0033] Figure 7 This is the present invention. Figure 6 Enlarged structural diagram at point A;

[0034] Figure 8 This is the present invention. Figure 5 Schematic diagram of the cross-sectional structure in the middle BB direction;

[0035] Figure 9 This is the present invention. Figure 8 Enlarged structural diagram at point B;

[0036] Figure 10 This is a schematic diagram of the installation structure of the screening mechanism of the present invention;

[0037] Figure 11 This is a schematic diagram of the structure of the screening arc plate of the present invention.

[0038] In the diagram: 1. Main frame; 2. Grooving mechanism; 3. Soil mixing pulley; 4. Moving roller; 5. Fertilizer bin; 6. Fertilizer funnel; 7. Seeding hopper; 71. Support bin; 72. Storage bin; 721. Square bin; 722. V-shaped bin; 73. Discharge mechanism; 731. Discharge motor; 732. Drive gear; 733. Driven gear; 734. Transmission rack; 735. Discharge baffle; 736. Baffle guide rail; 74. Dropping mechanism; 741. Receiving hopper; 742. Dropping valve body; 743. Valve body outlet; 744. Valve body shaft; 745. Valve body blade; 746. Screening. Mechanism; 7461, Screening arc plate; 7462, Screening hole; 7463, Side baffle; 7464, Screen hole sealing plate; 7465, Sealing plate bracket; 747, Adjusting gear; 748, External rack; 749, Internal rack; 75, Drive mechanism; 751, Drive motor; 752, Drive shaft; 753, Belt drive component; 754, Linkage shaft; 755, Linkage turntable; 756, Turntable pin; 757, Linkage connecting rod; 758, Mixing pin; 76, Mixing bracket; 77, Mixing mechanism; 771, Mixing connecting plate; 772, Mixing shaft; 773, Mixing support rod; 8, Seeding tube. Detailed Implementation

[0039] 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.

[0040] Please see Figures 1-11 As shown, the present invention is a precision row seeding device for rice with multiple grain types, comprising:

[0041] Main frame 1, which serves as the main mounting body for the strip seeding device;

[0042] The grooving mechanism 2 is installed at the lower part of the main frame 1 and is used to press the groove for sowing on the seedling tray before sowing.

[0043] The soil-combining pulley 3 is installed at the lower part of the main frame 1 and located behind the pressing mechanism 2, and is used to compress the soil after sowing.

[0044] The movable roller 4 is installed on the lower part of the main frame 1 and is used to drive the device to move.

[0045] Fertilizer bin 5, which is installed on the upper part of the main frame 1, is used to add fertilizer after the soil is turned over;

[0046] The seeding hopper 7 is installed on the upper part of the main frame 1. It stores the seeds to be sown and is used to sow the seeds in a quantitative manner.

[0047] The seeding hopper 7 includes a support hopper 71 fixedly installed on the upper part of the main frame 1. The support hopper 71 is equipped with a storage hopper 72 for storing seeds. The support hopper 71 is equipped with a discharge mechanism 73 for adjusting the discharge of seeds of different particle sizes stored in the storage hopper 72. The lower end of the support hopper 71 is equipped with a discharge mechanism 74 for quantitatively discharging seeds. The outlet of the discharge mechanism 74 is connected to a seeding pipe 8. The outlet of the seeding pipe 8 is located in front of the soil mixing pulley 3.

[0048] In practical applications, the main frame 1 can be understood as the foundation structure of the entire device. Its main function is to provide a stable installation platform to ensure that all functional components can work together. For example, the main frame 1 can be made of a metal frame structure or high-strength composite materials to meet the strength and stability requirements of the device during field operations. The soil-binding pulley 3 can be implemented using an arc-shaped plate or a soil-pressing component with flexible material. Its function is to cover the sown seeds in the soil and prevent the seeds from being exposed on the surface. The fertilizer bin 5 can be designed as a funnel-shaped or box-shaped structure, and its interior can be equipped with partition plates or multi-channel diversion devices to achieve uniform fertilizer distribution. The storage bin 72 in the seed hopper 7 can be implemented using containers of various shapes, such as cylindrical or square structures. Its interior can be equipped with an inclined bottom plate or a vibration device to promote seed flow. The discharge mechanism 73 can be implemented using structures such as sliding baffles, rotary valves, or elastic clamps. Its function is to adapt to seeds of different particle sizes by adjusting the size of the discharge port. The feeding mechanism 74 can be implemented by a rotary distributor, a vibrating screen or an airflow control device. Its purpose is to ensure the consistency of the feeding amount each time, thereby achieving uniform seed sowing.

[0049] In actual agricultural production, the seedling trays we use typically need to have 14, 16, 18, or 20 sowing grooves pressed out. This varying number of grooves is necessary because different crops and growing environments have different requirements for the number of grooves. Therefore, the number of pressure rollers on the pressing mechanism 2 needs to be adjusted according to actual sowing needs. To enable more efficient and convenient adjustment of the number of pressure rollers, they are specially designed to be detachable. This detachable design allows operators to easily and flexibly adjust the number of pressure rollers to meet different sowing requirements, thus better satisfying the diverse needs of actual production.

[0050] The innovation of this application lies in designing a multi-grain-type adaptable precision row seeding device for rice, which solves the problems of existing row seeders being unable to adjust the discharge speed according to seed grain shape and unable to ensure the seeding quantity. Specifically, the coordinated work of the discharge mechanism 73 and the dropping mechanism 74 enables precise seeding of different grain shapes, thereby improving the adaptability and accuracy of seeding. In addition, through a reasonable structural layout and the coordination of functional modules, the device realizes a complete seeding process from loosening the soil to compaction, further improving seeding efficiency and quality.

[0051] The working principle of this embodiment is as follows: The main frame 1 serves as the mounting base for the entire device. The soil compaction mechanism 2 is located at the lower part of the main frame 1 and is used to loosen the soil before sowing, thereby improving the soil's looseness and providing suitable soil conditions for subsequent seed sowing. The soil-coating pulley 3 is located behind the soil compaction mechanism 2 and is also installed at the lower part of the main frame 1. Its function is to close the soil after seed sowing, covering the seeds to prevent them from being exposed or shifting, and ensuring that the seeds can be fixed in the predetermined position.

[0052] The fertilizer bin 5 is located on the upper part of the main frame 1 and is used to add fertilizer after the soil is loosened, providing the necessary nutrient support for seed growth. The seeding bin 7 is also installed on the upper part of the main frame 1. It stores the seeds to be sown and achieves quantitative sowing through a specific structure. Specifically, the seeding bin 7 includes a support bin 71, a storage bin 72, a discharging mechanism 73, and a dropping mechanism 74. The support bin 71 is fixedly installed on the upper part of the main frame 1, providing a structural frame for the seeding bin 7. The storage bin 72 is located inside the support bin 71 and is used to store seeds and serve as a seed supply source. The discharging mechanism 73 is located on the support bin 71 and is used to adjust the discharging speed of seeds of different particle sizes in the storage bin 72. By adjusting the size of the discharging port, it adapts to seeds of different particle sizes, thereby solving the problem in existing technologies where the discharging speed cannot be adjusted according to the seed particle size.

[0053] The dispensing mechanism 74 is located at the lower end of the support chamber 71 and is used to quantitatively dispense seeds, ensuring the consistency of the dispensing amount each time, thereby achieving uniform sowing. The outlet of the dispensing mechanism 74 is connected to the sowing pipe 8, and the outlet of the sowing pipe 8 is located in front of the soil mixing pulley 3 to ensure that the seeds are accurately sown into the soil before the soil is closed. Thus, the entire device, through the coordinated work of the grooving mechanism 2, fertilizer chamber 5, seed material chamber 7, soil mixing pulley 3, and moving roller 4, sequentially completes the operation process of soil grooving, fertilizer addition, seed sowing, and soil closure.

[0054] In a preferred embodiment, the discharging mechanism 73 and the dropping mechanism 74 work together to achieve precise row sowing of seeds with different particle sizes. The discharging mechanism 73, by adjusting the seed discharging speed from the storage bin 72, solves the problem of uneven sowing quantity caused by differences in seed particle size in existing technologies. The dropping mechanism 74, by quantitatively discharging the seeds, further ensures the accuracy of the sowing quantity. For example, in actual operation, when the seed particle size in the storage bin 72 changes, the discharging mechanism 73 can adjust the size of the discharging port to adapt to the new particle size, while the dropping mechanism 74 maintains quantitative discharging, thereby achieving precise sowing of seeds with different particle sizes. The design of the entire device effectively solves the technical problems of existing row seeders being unable to adjust the discharging speed according to the particle size and unable to ensure the sowing quantity, significantly improving the sowing effect and quality.

[0055] Furthermore, the fertilizer bin 5 is equipped with several fertilizer funnels 6 for directional discharge of fertilizer, and the outlet of the fertilizer funnel 6 is a ring structure, which separates the fertilizer from the seeds.

[0056] Specifically, the fertilizer funnel 6 refers to a flow guiding device with a specific geometric shape, which can be implemented using a conical, cylindrical, or other guiding structure. In practical applications, the design of the fertilizer funnel 6 needs to ensure that the fertilizer flows along a predetermined path, preventing it from scattering randomly. The annular structure refers to the closed or nearly closed annular design of the outlet portion of the fertilizer funnel 6, which can be achieved through integral molding or modular assembly. The purpose of introducing this annular structure is to distribute the fertilizer evenly around the seeds through geometric characteristics, thereby forming a physical isolation zone and preventing the fertilizer from directly contacting the seeds.

[0057] In detail, the fertilizer bin 5's outlet utilizes multiple fertilizer funnels 6 to achieve precise guidance and directional discharge of fertilizer. The annular outlet design of the fertilizer funnels 6 ensures that the fertilizer is evenly distributed in a ring shape around the seed landing point during sowing. This design not only guarantees the fertilizer's diffusion range in the soil but also effectively avoids direct coverage of seeds by high-concentration fertilizer, thereby reducing the risk of chemical damage. Furthermore, the combination of the annular outlet and directional discharge further optimizes the spatial distribution relationship between fertilizer and seeds, improving sowing quality and crop germination stability. Based on this, this technical solution, together with the main frame 1, the grooving mechanism 2, and the seed hopper 7, forms a complete row sowing system that meets the sowing needs of different seed sizes and solves the technical problem of mixing fertilizer and seeds during sowing.

[0058] Through the above technical solutions, fertilizer and seeds can be effectively separated, significantly improving sowing quality and increasing crop germination rate and growth stability.

[0059] Furthermore, the storage bin 72 includes a square bin 721 fixedly installed in the support bin 71. The bottom of the square bin 721 is provided with a V-shaped bin 722. The bottom of the V-shaped bin 722 is provided with a seed outlet. The discharge mechanism 73 is installed on the outer periphery of the V-shaped bin 722 to adjust the size of the seed outlet to adapt to the discharge of seeds of different particle sizes.

[0060] In practical applications, the square silo 721 refers to a storage structure with a regular geometric shape, which can be implemented using a rectangular, square, or other regular polygonal cross-section design. Its purpose is to provide uniform storage space for seeds and ensure a stable connection with the support silo 71. The V-shaped silo 722 can be understood as a structure with inclined walls. Its inclined angle guides seeds to converge towards the center, and this angle can be optimized and adjusted according to the flow characteristics of the seeds. Specifically, the seed outlet refers to the smallest cross-sectional area located at the bottom of the V-shaped silo 722. Its opening degree can be dynamically changed through a mechanical adjustment device to match the flow requirements of seeds of different sizes, aiming to achieve precise discharge control. Furthermore, the discharge mechanism 73 is installed on the outer periphery of the V-shaped silo 722. It can adjust the size of the seed outlet through sliding, rotation, or extension, thereby adapting to the sowing needs of seeds of various sizes.

[0061] Specifically, the above-mentioned solution optimizes the seed flow path and discharge control mechanism through the combined design of a square silo 721 and a V-shaped silo 722. The square silo 721, as the main seed storage area, ensures a stable connection with the support silo 71 through its regular geometry and provides a uniformly distributed upper space for the seeds, preventing seed accumulation or uneven flow caused by structural deformation. The inclined walls of the V-shaped silo 722 utilize gravity to guide the seeds naturally towards the center, eliminating the problems of seed bridging or stagnation found in traditional straight silos, resulting in a more continuous and concentrated seed flow. The seed discharge port is located at the bottom of the V-shaped silo 722, serving as the minimum cross-sectional point for seed flow, which highly concentrates the seed flow and facilitates precise adjustment by the discharge mechanism 73. The discharge mechanism 73, installed on the outer periphery of the V-shaped silo 722, can dynamically adjust the opening and closing degree of the discharge port according to the seed particle size characteristics, thereby achieving micron-level precision discharge control. Based on the above design, the seeds are subjected to uniform force and controllable direction during flow, making the adjustment action of the discharge mechanism 73 more efficient and accurate, effectively solving the problem of uneven sowing caused by differences in seed particle size. At the same time, this solution forms a close functional cooperation with the support chamber 71 and the discharge mechanism 73, further improving the precision and consistency of sowing.

[0062] Through the above technical solution, this application achieves precise sowing control of seeds of different particle sizes, significantly improving the uniformity of hybrid rice sowing and growth efficiency, while avoiding sowing quality problems caused by seed accumulation or uneven flow.

[0063] Furthermore, the discharge mechanism 73 includes two sets of baffle guide rails 736 fixedly installed on the outer wall of the V-shaped hopper 722. Two sets of discharge baffles 735 are slidably installed between the baffle guide rails 736 and the V-shaped hopper 722. The two sets of discharge baffles 735 are distributed in a V-shape. The spacing at the bottom of the V-shape can be adjusted by sliding the discharge baffles 735 to accommodate the discharge of seeds of different specifications.

[0064] Specifically, the baffle guide rail 736 refers to the structure that provides a guiding path for the discharge baffle 735. It can be implemented using linear guide rails, dovetail guide rails, or other types of slide rails, with the aim of ensuring that the discharge baffle 735 maintains a stable and precise trajectory during movement. The discharge baffle 735 is a key component used to adjust the size of the discharge port. It can be made of metal plates, plastic plates, or other materials with a certain degree of rigidity, with the purpose of adapting to the sowing requirements of seeds of different particle sizes by changing the spacing of the V-shaped bottom. The V-shaped distribution design is to match the geometry of the V-shaped hopper 722, thereby ensuring uniform adjustment of the discharge port.

[0065] In detail, this solution uses a baffle guide rail 736 fixedly mounted on the outer wall of the V-shaped hopper 722, providing a stable guiding path for the discharge baffle 735 and preventing offset or jamming during movement, making the adjustment operation smoother and more reliable. The sliding connection between the baffle guide rail 736 and the V-shaped hopper 722 enables stepless displacement adjustment, covering a variety of seed particle sizes without replacing parts, significantly improving adaptability. The two sets of discharge baffles 735 are V-shaped, closely conforming to the geometry of the bottom of the V-shaped hopper 722. When the spacing is adjusted, the discharge port can uniformly contract or expand, preventing seeds from clogging due to local narrowing and ensuring the continuity and stability of the seed flow. In addition, by directly adjusting the spacing at the bottom of the V-shape by sliding the discharge baffles 735, users can intuitively and quickly set the discharge port size, which is simple to operate and has a rapid response, avoiding the cumbersome steps of traditional mechanical adjustment methods. Ultimately, the design achieved precise control of the seed outlet through mechanical linkage, ensuring that seeds of different sizes could receive the appropriate sowing amount, thus effectively solving the problem of inaccurate outlet matching and improving the overall sowing quality and adaptability of the row seeding device.

[0066] The above technical solutions not only solve the problem of lack of flexibility and precision in adjusting the size of the discharge port of the material dispensing mechanism, but also significantly improve the sowing accuracy and operation efficiency, providing reliable technical support for the precision sowing of multi-seed types.

[0067] Furthermore, the discharge mechanism 73 also includes a drive gear 732 and a driven gear 733 rotatably mounted on the inner wall of the support chamber 71. The drive gear 732 and the driven gear 733 are meshed together. A transmission rack 734 is fixedly installed on each of the two sets of discharge baffles 735. The drive gear 732 and the driven gear 733 are meshed together with the transmission rack 734 on the same side. A discharge motor 731 is fixedly installed on the outer wall of the support chamber 71. The discharge motor 731 is used to drive the drive gear 732 to rotate.

[0068] Specifically, the driving gear 732 is the core component that transmits power through rotational motion, and it can be implemented using structures such as spur gears, helical gears, or bevel gears. The driven gear 733 is the auxiliary component that cooperates with the driving gear 732 to complete the power transmission, and it can achieve meshing transmission using the same gear type as the driving gear 732. The transmission rack 734 is the key component that converts the rotational motion of the gears into linear motion, and it can be in the form of a spur rack or a helical rack, with the purpose of ensuring high precision and stability in the sliding adjustment of the discharge baffle 735. The discharge motor 731 is the power source that provides driving force for the entire system, and it can be of the type of stepper motor, servo motor, or DC motor, with the purpose of achieving automated control and improving adjustment efficiency.

[0069] In detail, this technical solution uses a discharge motor 731 to drive a drive gear 732 to rotate. The drive gear 732 meshes with a driven gear 733, thereby driving the transmission racks 734 on both sides to move synchronously. The movement of the transmission racks 734 directly acts on the discharge baffles 735, causing them to slide along the baffle guide rails 736, thus adjusting the spacing at the bottom of the V-shaped hopper 722. This design not only achieves adaptability adjustment for seeds of different sizes, but also ensures the synchronicity and symmetry of the discharge baffles 735 on both sides through the linkage mechanism of the gears and racks. In addition, the introduction of the discharge motor 731 eliminates the need for manual intervention in the entire adjustment process, significantly improving operational efficiency and adjustment accuracy. Through the above technical solution, the problems of baffle position misalignment or insufficient synchronicity in manual adjustment methods are solved, ensuring the uniformity and accuracy of seed sowing, and ultimately improving the overall quality of precision row sowing of hybrid rice.

[0070] Furthermore, the feeding mechanism 74 includes a receiving hopper 741 fixedly installed at the lower end of the support bin 71 for receiving seeds falling from the storage bin 72. The receiving hopper 741 is provided with multiple hoppers corresponding to the number of seeding tubes 8. A feeding valve body 742 is provided at the outlet of the receiving hopper 741. The bottom of the feeding valve body 742 is provided with a valve body outlet 743 connected to the seeding tube 8. A valve body shaft 744 is rotatably installed on the feeding valve body 742. Several valve body blades 745 arranged in a ring array are provided on the outer periphery of the valve body shaft 744. The falling seeds are divided into chambers and quantified by multiple valve body blades 745, thereby ensuring uniform seed sowing.

[0071] Specifically, the receiving hopper 741 is a structure used to receive and temporarily store seeds falling from the storage bin 72. It can be made of metal or high-strength plastic, and its purpose is to ensure that the seeds can stably enter the subsequent dispensing system. The dispensing valve body 742 can be understood as a key component for controlling seed flow. Its internal structure design needs to meet the requirements of precise adjustment of seed flow rate, and its opening and closing function can be achieved through mechanical transmission or electronic control. The valve body blades 745 are designed to divide the seeds into multiple independent chambers. Their number and shape can be adjusted according to actual needs to adapt to the sowing requirements of different seed sizes.

[0072] In detail, this scheme evenly distributes seeds into multiple channels through the receiving hopper 741, avoiding localized accumulation caused by single-point seeding. The connection between the receiving hopper 741 and the discharge valve body 742 forms a stable seed transport path, effectively preventing seed loss or blockage during transfer. The valve body blades 745, arranged in a ring array on the valve body shaft 744, divide the seeds into multiple independent chambers with fixed volumes when rotating, each chamber having the same capacity, thus achieving precise, quantitative seed dispersal. This design eliminates the dependence of seed dispersal on free fall speed, instead controlling the chamber volume and rotation rhythm, significantly improving the reliability and quality of precision row sowing of hybrid rice. Furthermore, this scheme, in conjunction with the structure of the support bin 71 and the storage bin 72, further optimizes the overall performance of the sowing system.

[0073] The above technical solutions solve the problems of unstable flow and inaccurate quantification caused by the lack of a precise control mechanism for different seed sizes, and significantly improve the uniformity of sowing and the overall sowing quality.

[0074] Furthermore, a temporary chamber for storing a small amount of seeds is formed between adjacent valve body blades 745. A screening mechanism 746 for screening seeds is provided in the chamber. The screening mechanism 746 includes a screening arc plate 7461 set in the middle of the chamber. The screening arc plate 7461 is provided with a number of screening holes 7462 for screening seeds. Both ends of the screening arc plate 7461 are provided with side baffles 7463 to seal the chamber, so that the seeds roll on the screening arc plate 7461 while the valve body blades 745 rotate. A screen hole sealing plate 7464 for blocking the screening holes 7462 is slidably provided on the side of the screening arc plate 7461 near the valve body shaft 744. When the chamber is located in the position of one chamber before the inlet of the discharge valve body 742, the screening holes 7462 are opened until they are rotated to the position of one chamber before the outlet of the valve body 743 and then closed to prevent the screened seeds from falling back and continue to complete the sowing.

[0075] Specifically, the chamber refers to the enclosed space formed by adjacent valve body blades 745, which can be implemented using blade designs of different shapes or sizes. The screening mechanism 746 can be integrated into various structural forms within the chamber, such as a perforated plate or a mesh structure, its purpose being to dynamically screen seeds. The screening arc plate 7461 is an arc-shaped structure whose function is to use centrifugal force to evenly distribute seeds and improve screening efficiency. The screening holes 7462 can be designed with different sized holes according to the seed particle size to achieve precise screening. The side baffles 7463 are used to seal both ends of the chamber to prevent seed leakage and ensure that the screening process is completed in a closed environment. The sieve hole sealing plate 7464 controls the opening and closing of the screening holes 7462 by sliding, its purpose being to precisely control the screening timing according to changes in the chamber position.

[0076] Specifically, the above solution achieves simultaneous seed quantification and sieving through the combination of a chamber and a screening mechanism 746. The chamber, serving as a temporary seed storage space, is designed to facilitate the integration of the screening function, preventing seed accumulation from affecting the screening effect. The screening arc plate 7461, utilizing its arc-shaped structure, allows the seeds to naturally distribute and fully contact the screening holes 7462 under the centrifugal force generated when the valve body blades 745 rotate, thereby improving screening uniformity. Side baffles 7463 seal both ends of the chamber, ensuring the screening process is not affected by external interference. The screen hole sealing plate 7464 controls the opening and closing of the screening holes 7462 according to the position of the chamber. When the chamber is positioned before the inlet of the discharge valve body 742, the screening holes 7462 are opened to remove impurities promptly; when rotated to the position before the valve body outlet 743, the screening holes 7462 are closed to prevent the sieved seeds from falling back or mixing with impurities before sowing. The entire mechanism, through the linkage between the chamber position and the opening and closing of the screen holes, achieves precise control of the screening timing, thereby ensuring the quality and uniformity of seed sowing.

[0077] Furthermore, the aforementioned design works closely with other components of the feeding mechanism 74. For example, the connection between the receiving hopper 741 and the feeding valve body 742 ensures that seeds can smoothly enter the chamber, while the rotation of the valve body blades 745 provides the power source for screening. This design not only optimizes the quantitative seed dispersal process but also significantly improves the sowing quality through dynamic screening, solving the sowing problem caused by seed impurities.

[0078] Furthermore, a connecting shaft is rotatably mounted on the side baffle 7463, and an adjusting gear 747 is fixedly mounted on the connecting shaft. The screen hole sealing plate 7464 is fixedly connected to the connecting shaft through the sealing plate bracket 7465. The inner side of the end cover of the discharge valve body 742 is provided with an outer rack 748 and an inner rack 749 for driving the adjusting gear 747 to rotate. The teeth of the outer rack 748 and the inner rack 749 face opposite directions, thereby driving the connecting shaft to rotate in the forward and reverse directions respectively, realizing the reciprocating drive of the screen hole sealing plate 7464, thereby controlling the opening and closing of the screening hole 7462.

[0079] Specifically, the connecting shaft refers to a support structure that can rotate around its own axis, which can be implemented using a cylindrical shaft made of metal. In practical applications, the connecting shaft serves as the rotation fulcrum of the screen hole sealing plate 7464, ensuring its stable movement based on the fixed side baffle 7463 and preventing positioning offset caused by valve body rotation. The adjusting gear 747 is a toothed disc-shaped component that transmits driving force by meshing with a rack, and its fixed installation method ensures the synchronization and reliability of the rotation process. The sealing plate bracket 7465 is a rigid connector used to firmly fix the screen hole sealing plate 7464 to the connecting shaft, so that the rotation of the connecting shaft is directly converted into the linear sliding of the screen hole sealing plate 7464. The outer rack 748 and the inner rack 749 are two rack structures with opposite tooth directions, which can be manufactured by injection molding or metal processing. Their tooth direction design realizes the bidirectional driving function of the connecting shaft.

[0080] In detail, the above solution, through the opposite tooth direction design of the outer rack 748 and the inner rack 749, ensures that the sieve hole sealing plate 7464 can precisely control the opening and closing of the screening hole 7462 during the rotation of the chamber. When the chamber is located before the inlet of the discharge valve body 742, the adjusting gear 747 meshes with the outer rack 748, driving the connecting shaft to rotate in the forward direction, thus opening the screening hole 7462 for seed screening; when the chamber rotates to the position before the outlet, the adjusting gear 747 meshes with the inner rack 749, driving the connecting shaft to rotate in the reverse direction, thus closing the screening hole 7462 to prevent the screened seeds from falling back. This automated reciprocating drive mechanism requires no external sensors or complex control, significantly improving screening accuracy and sowing quality. In addition, since the end cap is fixed and the rack position is constant, this design makes the drive mechanism unaffected by the rotation of the valve body, further enhancing the stability and reliability of the system.

[0081] The above technical solution solves the problem of the lack of an automatic drive mechanism for the sieve hole sealing plate in the screening mechanism, ensuring that the screening holes can be accurately opened or closed according to the position change during the rotation of the chamber, thereby effectively avoiding inaccurate seed screening and seed fall back after screening, and significantly improving the uniformity and quality of sowing.

[0082] Furthermore, a stirring support 76 is provided at the upper end of the storage bin 72, and a stirring mechanism 77 for preventing seed blockage is provided on the stirring support 76; the stirring mechanism 77 includes multiple stirring shafts 772 that are slidably connected to the stirring support 76, and a square bin 721 is fixedly connected to the upper end of multiple sets of V-shaped bins 722. Several stirring support rods 773 are provided at the lower part of the stirring shafts 772. The stirring support rods 773 are driven to stir inside the seeds by the lifting and lowering movement of the stirring shafts 772, so as to avoid seed blockage.

[0083] Specifically, the stirring support 76 is a structural component that provides the mounting foundation and support for the stirring mechanism 77. It can be made of a metal frame or high-strength plastic, and its purpose is to ensure the stability and reliability of the stirring mechanism 77 during operation. The stirring mechanism 77 can be understood as a dynamic lifting stirring device. Its core function is to maintain seed flowability through mechanical agitation. This can be achieved through a combination of multiple stirring shafts 772 and stirring support rods 773, and its purpose is to solve the problem of outlet blockage caused by seed accumulation or agglomeration. The stirring shaft 772 is a transmission component with vertical freedom. It can use sliding bearings or linear guides to achieve lifting and lowering movement, and its purpose is to adapt to the flowability differences of different seed shapes and automatically adjust the stirring range. The stirring support rod 773 is a stirring element installed at the lower part of the stirring shaft 772. It can be made of flexible or rigid materials, and its purpose is to penetrate deep into the seed and perform up-and-down reciprocating agitation to break the bridging effect and local compression phenomenon between seeds.

[0084] In detail, this solution uses a stirring bracket 76 fixed to the upper end of the storage silo 72, providing a stable support foundation for the stirring mechanism 77, thus preventing structural displacement due to vibration from affecting the stirring effect. The stirring mechanism 77 employs a design where multiple stirring shafts 772 slide through the stirring bracket 76, giving the stirring shafts 772 vertical freedom. This design can automatically adjust the stirring range according to the seed accumulation state, and is particularly suitable for the flowability differences of seeds of different sizes. The stirring support rod 773, located at the lower part of the stirring shaft 772, penetrates deep into the seed interior for stirring. Through lifting and lowering movement, it achieves up-and-down reciprocating motion. This dynamic stirring method effectively breaks the bridging effect and local compaction between seeds, preventing seeds from clogging at the connection between the V-shaped silo 722 and the square silo 721. The structure of multiple sets of V-shaped silos 722 connected to the square silo 721, combined with the lifting and lowering stirring of the stirring support rod 773, ensures that the seeds flow evenly within the silos, avoiding dead corner accumulation, thus ensuring a continuous and stable flow of seeds to the discharging mechanism 74, improving sowing accuracy. Overall, the design organically combines mechanical agitation with the silo structure, maintaining seed flowability through physical intervention and providing a reliable material basis for the quantitative distribution chamber of the subsequent discharge valve 742.

[0085] The above technical solution solves the problem of seed accumulation or clumping in the storage silo, which can lead to blockage of the discharge port. This ensures the stability and continuity of the seeding process and improves the operational reliability of the row seeding device. Furthermore, the solution achieves effective control of seed flowability through the dynamic lifting and stirring of the stirring mechanism 77 and the synergistic optimization of the silo structure. This is particularly effective for addressing the tendency of hybrid rice seeds to clump, significantly improving sowing accuracy and uniformity.

[0086] Furthermore, the support chamber 71 is provided with a drive mechanism 75 for driving the material feeding mechanism 74 and the stirring mechanism 77; the drive mechanism 75 includes a drive shaft 752 connecting multiple sets of valve body shafts 744, and a drive motor 751 for driving the drive shaft 752 to rotate is fixedly installed on the support chamber 71; and a linkage shaft 754 is rotatably installed on the outer wall of the support chamber 71, the linkage shaft 754 is connected to the drive shaft 752 through a belt drive component 753, a linkage turntable 755 is fixedly installed on the linkage shaft 754, a turntable pin 756 is fixedly provided near the edge of the linkage turntable 755, a linkage connecting rod 757 is rotatably installed on the turntable pin 756, and the end of the linkage connecting rod 757 away from the turntable pin 756 is rotatably connected to the stirring plate 771 through a stirring pin 758.

[0087] The drive mechanism 75 refers to an integrated device capable of simultaneously powering multiple functional components, which can be achieved through gear transmission, chain transmission, or hydraulic transmission. In practical applications, the linkage shaft 754 is a key component that converts rotary motion into reciprocating motion, which can be achieved through an eccentric wheel structure or a crank-slider mechanism. Specifically, the linkage turntable 755, as the core component for motion conversion, converts circular motion into linear displacement through an eccentrically positioned turntable pin 756. This design ensures the accuracy and stability of motion transmission.

[0088] In detail, this solution provides a stable power source through a drive motor 751, and a drive shaft 752 directly connects to multiple valve body shafts 744, enabling the material-discharging valve blades 745 to rotate and dispense quantitatively, ensuring uniform seed dispersal. Simultaneously, the drive shaft 752 transmits the rotational motion to the linkage shaft 754 via a belt drive 753. The linkage turntable 755 on the linkage shaft 754 converts the continuous rotational motion into periodic reciprocating motion. The turntable pin 756 serves as the motion conversion fulcrum, and the linkage rod 757 converts the turntable's circular motion into linear displacement, thereby driving the stirring plate 771 to move up and down. This design achieves synchronous automation of the material discharging and stirring functions, effectively ensuring the continuity and accuracy of the sowing process.

[0089] Building upon this, the flexible connection of the belt drive component 753 ensures smooth motion transmission, preventing impacts from affecting sowing accuracy. Meanwhile, the eccentric structure of the linkage turntable 755 and turntable pin 756 optimizes the stroke control of the reciprocating motion, allowing the mixing depth to adapt to different seed conditions. The unified drive mechanism simplifies the system structure, avoids the coordination difficulties caused by independent drives, and significantly improves the reliability and operational efficiency of the device in complex field environments. Through these technical solutions, the problem of the lack of an automatic drive mechanism in the mixing mechanism is solved, enabling timely and effective resolution of seed clogging during sowing, and improving sowing accuracy and continuity.

[0090] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A precision rice seeding device with multi-grain type adaptability, characterized in that, include: The main frame (1) serves as the mounting body for the strip seeding device; The grooving mechanism (2) is installed at the lower part of the main frame (1) and is used to press the groove for sowing on the seedling tray before sowing. The soil-binding pulley (3) is installed at the lower part of the main frame (1) and behind the pressing mechanism (2) to bind the soil after sowing. The movable roller (4) is installed on the lower part of the main frame (1) and is used to drive the device to move; Fertilizer bin (5), which is installed on the upper part of the main frame (1), is used to add fertilizer after the soil is turned over; The seed hopper (7) is installed on the upper part of the main frame (1) and stores seeds to be sown, which is used to sow seeds in a quantitative manner. The seeding hopper (7) includes a support hopper (71) fixedly installed on the upper part of the main frame (1). The support hopper (71) is provided with a storage hopper (72) for storing seeds. The support hopper (71) is provided with a discharge mechanism (73) for adjusting the discharge of seeds of different particle sizes stored in the storage hopper (72). The lower end of the support hopper (71) is provided with a discharge mechanism (74) for quantitatively discharging seeds. The outlet of the discharge mechanism (74) is connected to a seeding pipe (8). The outlet of the seeding pipe (8) is located in front of the soil mixing pulley (3). The feeding mechanism (74) includes a receiving hopper (741) fixedly installed at the lower end of the support bin (71) for receiving seeds falling from the storage bin (72). The receiving hopper (741) is provided with multiple hoppers corresponding to the number of seeding tubes (8). A feeding valve body (742) is provided at the outlet of the receiving hopper (741). The bottom of the feeding valve body (742) is provided with a valve body outlet (743) connected to the seeding tube (8). A valve body shaft (744) is rotatably installed on the feeding valve body (742). A number of valve body blades (745) arranged in a ring array are provided on the outer periphery of the valve body shaft (744). The falling seeds are divided into chambers and quantified by multiple valve body blades (745), thereby ensuring uniform seed sowing. A temporary chamber for storing a small amount of seeds is formed between adjacent valve body blades (745), and a screening mechanism (746) for screening the seeds is provided in the chamber. The screening mechanism (746) includes a screening arc plate (7461) set in the middle of the chamber. The screening arc plate (7461) is provided with a plurality of screening holes (7462) for screening seeds. Both ends of the screening arc plate (7461) are provided with side baffles (7463) to seal the chamber, so that the seeds roll on the screening arc plate (7461) while the valve body blade (745) rotates. The screening arc plate (7461) is slidably provided with a screen hole sealing plate (7464) for blocking the screening holes (7462) on the side of the screening arc plate (7461) near the valve body shaft (744). When the chamber is located at the position of one chamber before the inlet of the discharge valve body (742), the screening holes (7462) are opened until they are rotated to the position of one chamber before the outlet of the valve body (743) and then closed to prevent the screened seeds from falling back and continue to complete the sowing.

2. The multi-grain type adapted precision rice row seeding device according to claim 1, characterized in that, The fertilizer bin (5) has several fertilizer funnels (6) at its outlet for directional discharge of fertilizer, and the outlet of the fertilizer funnels (6) is a ring structure, which separates the fertilizer from the seeds.

3. The multi-grain type adapted precision rice row seeding device according to claim 1, characterized in that, The storage bin (72) includes a square bin (721) fixedly installed in the support bin (71). The bottom of the square bin (721) is provided with a V-shaped bin (722). The bottom of the V-shaped bin (722) is provided with a seed outlet. The discharge mechanism (73) is installed on the outer periphery of the V-shaped bin (722) to adjust the size of the seed outlet to adapt to the discharge of seeds of different particle sizes.

4. The multi-grain type adapted precision rice row seeding device according to claim 1, characterized in that, The discharge mechanism (73) includes two sets of baffle guide rails (736) fixedly installed on the outer wall of the V-shaped hopper (722). Two sets of discharge baffles (735) are slidably installed between the baffle guide rails (736) and the V-shaped hopper (722). The two sets of discharge baffles (735) are distributed in a V shape. The spacing at the bottom of the V shape can be adjusted by sliding the discharge baffles (735) to adapt to the discharge of seeds of different specifications.

5. A multi-grain type adapted precision rice row seeding device according to claim 4, characterized in that, The discharge mechanism (73) further includes a drive gear (732) and a driven gear (733) rotatably mounted on the inner wall of the support chamber (71). The drive gear (732) and the driven gear (733) are meshed together. A transmission rack (734) is fixedly installed on each of the two sets of discharge baffles (735). The drive gear (732) and the driven gear (733) are meshed together on the transmission rack (734) on the same side. A discharge motor (731) is fixedly installed on the outer wall of the support chamber (71). The discharge motor (731) is used to drive the drive gear (732) to rotate.

6. A multi-grain type adapted precision rice row seeding device according to claim 1, characterized in that, A connecting shaft is rotatably mounted on the side baffle (7463), and an adjusting gear (747) is fixedly mounted on the connecting shaft. The screen hole sealing plate (7464) is fixedly connected to the connecting shaft through a sealing plate bracket (7465). The inner side of the end cover of the discharge valve body (742) is provided with an outer rack (748) and an inner rack (749) for driving the adjusting gear (747) to rotate. The teeth of the outer rack (748) and the inner rack (749) face opposite directions, thereby driving the connecting shaft to rotate in the forward and reverse directions respectively, realizing the reciprocating drive of the screen hole sealing plate (7464), thereby controlling the opening and closing of the screening hole (7462).

7. A multi-grain type adapted precision rice row seeding device according to claim 1, characterized in that, The upper end of the storage bin (72) is provided with a stirring support (76), and the stirring support (76) is provided with a stirring mechanism (77) for preventing seed blockage; the stirring mechanism (77) includes multiple stirring shafts (772) that are slidably connected to the stirring support (76), and a square bin (721) is fixedly connected to the upper end of multiple sets of V-shaped bins (722). Several stirring support rods (773) are provided at the lower part of the stirring shafts (772). The stirring support rods (773) are driven to stir inside the seeds by the lifting and lowering movement of the stirring shafts (772), so as to avoid seed blockage.

8. A multi-grain type adapted precision rice row seeding device according to claim 7, characterized in that, The support chamber (71) is provided with a drive mechanism (75) for driving the material feeding mechanism (74) and the stirring mechanism (77); the drive mechanism (75) includes a drive shaft (752) connecting multiple sets of valve body shafts (744), and a drive motor (751) for driving the drive shaft (752) to rotate is fixedly installed on the support chamber (71); and a linkage shaft (754) is rotatably installed on the outer wall of the support chamber (71), the linkage shaft (754) being connected by a belt The transmission component (753) is connected to the drive shaft (752) for transmission. A linkage turntable (755) is fixedly installed on the linkage shaft (754). A turntable pin (756) is fixedly provided near the edge of the linkage turntable (755). A linkage connecting rod (757) is rotatably installed on the turntable pin (756). The end of the linkage connecting rod (757) away from the turntable pin (756) is rotatably connected to the stirring plate (771) through the stirring pin (758).

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