An integrated seed metering device for intercropping

Abstract

The application discloses an integrated seed sowing device for intercropping, and belongs to the technical field of intercropping seed sowing machines. The integrated seed sowing device comprises a middle seed sowing channel, first seed boxes and second seed boxes arranged on the two sides of the middle seed sowing channel, and a proportion adjusting device fixedly arranged on the middle seed sowing channel. The proportion adjusting device comprises a first transmission assembly and a second transmission assembly, the first transmission assembly is connected with the first seed boxes, the second transmission assembly is connected with the second seed boxes, the first transmission assembly and the second transmission assembly are alternately operated, the first seed boxes and the second seed boxes are alternately rotated relative to the middle seed sowing channel, different seeds are alternately discharged from the middle seed sowing channel, and intercropping seed sowing is carried out.

Description

Technical Field

[0001] This invention belongs to the field of intercropping and seeding machinery technology, specifically relating to an integrated seeding device for intercropping. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] Studies have shown that crop intercropping can effectively improve land productivity and increase crop yields, which is of great significance for intensive land use and sustainable development. In recent years, intercropping patterns of different crops, such as soybean-corn intercropping and peanut-corn intercropping, have received great attention and become a research hotspot.

[0004] However, traditional intercropping uses different seeders for each crop, or integrates different seed units on a single seeder to sow different crops. The seed metering devices are not interchangeable, and the planting process is complex, making it difficult to meet the requirements of high-yield, high-efficiency, and large-scale production in modern agriculture. This results in low economic benefits for intercropping and hinders the promotion of this planting model. Furthermore, most existing intercropping seeders are designed for fixed intercropping ratios, are bulky, and pose difficulties in operation and transportation. They also have poor adaptability to different regions and intercropping ratios, making it difficult to meet operational requirements. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide an integrated seeding device for intercropping. This device can complete the sequential intercropping of two crops, such as soybean-corn or soybean-peanut, in a single row. Through multiple rows of reciprocating operations, it can complete the intercropping of two crops, greatly reducing the size of the intercropping seeder. It is flexible in application, realizes the miniaturization of the intercropping seeder, adapts to the sowing of various intercropping ratios, and solves the problems of existing intercropping seeders being bulky and difficult to operate. It provides equipment support for the promotion of intercropping patterns such as soybean-corn and peanut-corn.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0007] In a first aspect, the present invention provides an integrated seed metering device for intercropping, comprising a central seed metering channel, wherein a first seed box and a second seed box are respectively arranged on both sides of the central seed metering channel, and a ratio adjustment device is fixedly arranged in the central seed metering channel; the ratio adjustment device comprises a first transmission component and a second transmission component, wherein the first transmission component is connected to the first seed box, and the second transmission component is connected to the second seed box, wherein the first transmission component and the second transmission component operate alternately, such that the first seed box and the second seed box rotate alternately relative to the central seed metering channel, thereby alternately discharging different seeds from the central seed metering channel for intercropping seed metering.

[0008] As a further technical solution, the first transmission component includes a first proportional adjustment gear set, which meshes with a first intermediate gear, and the first intermediate gear meshes with a first driven gear. The first driven gear is fixedly connected to a first type of housing through a first output shaft.

[0009] As a further technical solution, the second transmission component includes a second proportional adjustment gear set, which meshes with a second intermediate gear, and the second intermediate gear meshes with a second driven gear. The second driven gear is fixedly connected to a second output shaft and a second housing. The first proportional adjustment gear and the second proportional adjustment gear set are respectively installed at both ends of the input shaft, and the input shaft is provided with an input sprocket connected to the power device. The first output shaft and the second output shaft are coaxially arranged.

[0010] As a further technical solution, both the first proportional adjustment gear set and the second proportional adjustment gear set are composed of multiple incomplete gears arranged in sequence. The diameter of the multiple incomplete gears gradually increases from one side to the other, forming a stepped shape. The multiple incomplete gears of each proportional adjustment gear set are numbered sequentially from one side to the other, and the incomplete gears with the same number in the two proportional adjustment gear sets have the same diameter.

[0011] As a further technical solution, the incomplete gears with the same number in both sets of proportional adjustment gears have multiple sets of effective teeth that are spaced apart and evenly distributed, with different numbers of effective teeth; the incomplete gears with the same number in both sets of proportional adjustment gears are installed alternately and can be stacked to form a complete gear; the number of effective tooth sets and the number of effective teeth of the incomplete gears with different numbers in each set of proportional adjustment gears are different, and the ratio of the number of effective teeth of the incomplete gears with different numbers in the two sets of proportional adjustment gears is also different.

[0012] As a further technical solution, the first intermediate gear and the second intermediate gear are both installed on the intermediate shaft, the second output shaft is sleeved with the proportional adjustment handle, the top of the intermediate seeding channel is provided with a stepped proportional adjustment port, the proportional adjustment handle passes through the proportional adjustment port and can change the position of the proportional adjustment port.

[0013] The proportional adjustment handle includes a handle body, and the handle body and the floating rod are coaxially connected. The floating rod passes through the radial through hole of the intermediate shaft, and the handle body and the floating rod can move axially along the second output shaft. A longitudinal adjustment spring is provided between the side of the handle body and the side of the floating rod, and a transverse adjustment spring is provided between the outer end of the floating rod and the intermediate shaft.

[0014] As a further technical solution, both the first type of box and the second type of box include a conical structure and a cylindrical structure connected to each other. The cylindrical structure is movably fastened to the middle seed dispensing channel. Multiple seed-taking spoons are evenly distributed around the inner circle of the cylindrical structure. The conical structure is provided with a seed-dispensing port.

[0015] As a further technical solution, the seed-collecting spoon includes an open section and a closed section connected to each other. The closed section is provided with a seed-discharging hole that communicates with the open section. The closed section has a C-shaped structure and is fixedly connected to the inner wall of the cylindrical structure. The open section includes two oppositely arranged plates, which are respectively connected to the two sides of one end of the closed section. The two sides of the seed-collecting spoon form an angle α with the circumferential inner wall of the cylindrical structure, where α is 30° to 45°.

[0016] As a further technical solution, the intermediate seeding channel includes an intermediate cylinder, with side plates arranged on both sides of the intermediate cylinder. The side plates are arranged radially along the intermediate cylinder, and the size of the side plates is smaller than the radial size of the intermediate cylinder. The side plates are located on the lower part of the intermediate cylinder, forming a semi-enclosed space with the intermediate cylinder. A seeding port is provided at the bottom of the intermediate cylinder.

[0017] As a further technical solution, the bottom of the side plate is arc-shaped and fixedly connected to the inner wall of the intermediate cylinder. The top of the side plate is divided into a horizontal section and a rising section. The intersection of the horizontal section and the rising section is the axis of the intermediate cylinder. The horizontal section is parallel to the ground. The rising section is inclined upward. The angle between the rising section and the horizontal section is an acute angle. The side plate as a whole is obtuse-angled fan-shaped.

[0018] The beneficial effects of the present invention are as follows:

[0019] The seed metering device of this invention is equipped with a proportional adjustment device. The first and second transmission components of the proportional adjustment device drive two types of boxes to rotate, and the two transmission components operate alternately to drive the two types of boxes to rotate alternately, so that the seeds of the two crops are discharged alternately for intercropping seeding. As a result, a miniaturized design is achieved, integrating the intercropping sowing of two different crops such as soybeans and corn into a small seed metering device, which greatly reduces the size of the intercropping seeder. At the same time, a modular design is achieved, and intercropping sowing can be realized simply by adding it to the frame. The working width is not limited by the planting mode, solving the problem of the large size of existing intercropping seeders, and making it flexible and convenient to use.

[0020] The seeding device of the present invention has a proportional adjustment gear set that can adjust the incomplete gears with different effective teeth to be in working state, thereby allowing the intercropping ratio of two crops to be adjusted at any time as required. This breaks through the limitation of arranging the seeding device according to the planting pattern ratio. The number of rows and row spacing are not limited by the planting pattern, solving the problem that the existing intercropping seeders are adapted to fixed planting patterns and cannot be easily adjusted.

[0021] The seed metering device of the present invention has seed boxes set on both sides of the middle seed metering channel for storing two kinds of seeds, such as soybeans and corn. The seed metering of the two kinds of seeds is integrated into the design. The two kinds of seeds are planted in the same seed meterer, and the two kinds of seeds are relatively independent and do not interfere with each other. The soybean and corn are intercropped in sequence according to proportion in a single row operation, and the soybean and corn are intercropped in strips by reciprocating cycle operation, which greatly improves the operability of intercropping. Attached Figure Description

[0022] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0023] Figure 1 This is a schematic diagram of the integrated seeding device for intercropping according to the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the integrated seeding device for intercropping according to the present invention;

[0025] Figure 3a This is a schematic diagram of the seed box structure of the present invention;

[0026] Figure 3b This is a schematic diagram of the structure of the seed box of the present invention from another angle;

[0027] Figure 4 This is a schematic diagram of the seed-collecting spoon structure of the present invention;

[0028] Figure 5a This is a schematic diagram of the seed filling process during the seed collection process of the present invention;

[0029] Figure 5b This is a segmented schematic diagram of the seed-collecting process of the present invention;

[0030] Figure 5c This is a diagram showing the changes in the seed-taking process of this invention from the seed filling section AB to the seed cleaning section CD to the seed discharge section DE;

[0031] Figure 6a This is a schematic diagram of the intermediate seeding channel structure of the present invention;

[0032] Figure 6b This is a schematic diagram of the intermediate seeding channel of the present invention from another angle;

[0033] Figure 7 This is a schematic diagram of the installation of the proportional adjustment device of the present invention;

[0034] Figure 8 This is a schematic diagram of the proportional adjustment device of the present invention;

[0035] Figure 9a This is a three-dimensional schematic diagram of the proportional adjustment handle of the present invention;

[0036] Figure 9b This is a side view of the proportional adjustment handle of the present invention;

[0037] Figure 10 This is a schematic diagram of the proportional adjustment gear set of the present invention;

[0038] Figure 11aThis is a schematic diagram of the #1 incomplete gear of the first proportional adjustment gear set of the present invention;

[0039] Figure 11b This is a schematic diagram of the #1 incomplete gear of the second proportional adjustment gear set of the present invention;

[0040] Figure 11c This is a schematic diagram showing the relative installation positions of the #1 incomplete gear in the two sets of proportional adjustment gear sets of the present invention.

[0041] Figure 12a This is a three-dimensional view of the incomplete gear and intermediate gear engagement of the proportional adjustment gear set during the operation of the present invention.

[0042] Figure 12b This is a side view of the incomplete gear and intermediate gear engagement of the proportional adjustment gear set during the operation of the present invention;

[0043] Figure 13a This is a schematic diagram of the existing traditional intercropping pattern;

[0044] Figure 13b This is a schematic diagram of the interoperability mode of the present invention;

[0045] In the diagram: the spacing or dimensions between parts have been exaggerated to show their positions; the diagram is for illustrative purposes only.

[0046] Among them, 1. First type of box, 2. Middle seeding channel, 3. Second type of box, 4. Proportion adjustment device;

[0047] 1-1. Seed scoop; 1-2. Bearing seat; 1-3. Seed inlet; 1-4. Output shaft connection hole;

[0048] 2-1. Mounting base; 2-2. Intermediate cylinder; 2-3. Side plate; 2-4. Seed discharge port; 2-5. Proportional adjustment port; 2-6. Power transmission port;

[0049] 3-1. Input sprocket, 3-2. Input shaft, 3-3. Proportional adjustment gear set, 3-4. First output shaft, 3-5. First driven gear, 3-6. Second output shaft, 3-7. Second driven gear, 3-8. Bearing, 3-9. Intermediate gear, 3-10. Proportional adjustment handle, 3-11. Intermediate shaft;

[0050] 3-3-1. First proportional adjustment gear set; 3-3-2. Second proportional adjustment gear set;

[0051] 3-10-1. Handle body, 3-10-2. Floating rod, 3-10-3. Vertical adjustment spring, 3-10-4. Horizontal adjustment spring. Detailed Implementation

[0052] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0053] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0054] For ease of description, the words "up," "down," "left," and "right" appearing in this invention only indicate that they are consistent with the up, down, left, and right directions of the accompanying drawings themselves, and do not limit the structure. They are merely for the purpose of facilitating the description of this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0055] Terminology Explanation: In this invention, terms such as “installation,” “connection,” “linking,” and “fixing” should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction relationship between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0056] In a typical embodiment of the present invention, such as Figure 1 As shown, an integrated seed metering device for intercropping is proposed, comprising a first seed box 1, a middle seed metering channel 2, a second seed box 3, and a ratio adjustment device 4. The middle seed metering channel 2 is fixedly installed on the seeder frame via positioning blocks on both sides. The first seed box 1 and the second seed box 3 are movably fastened to both sides of the middle seed metering channel 2. The outer wall of each seed box forms a semi-enclosed space with the side partition of the middle seed metering channel for storing seeds. The outer walls of the two seed boxes together with the side partitions of the middle seed metering channel form two semi-enclosed spaces. The two seed boxes as a whole can rotate relative to the middle seed metering channel around a center line. The ratio adjustment device 4 is installed on the two seed boxes and the middle seed metering channel via bearings, and the row spacing ratio of the two types of seeds is adjusted by the ratio adjustment device.

[0057] Different crop seeds are placed in the two types of boxes. Taking soybean and corn as an example, the seed boxes in the seed metering device are set as corn seed boxes and soybean seed boxes.

[0058] The overall working principle of the seed metering device is as follows: The proportional adjustment device is equipped with an input sprocket. When working, the seed metering device uses a motor to provide power, which is transmitted to the input sprocket through a chain. The input sprocket drives the proportional adjustment device to rotate, thereby causing the seed boxes on both sides to rotate sequentially around the center line relative to the middle seed metering channel. During the rotation, the seed boxes take out the seeds and discharge them sequentially from the middle seed metering channel, completing the seed metering process.

[0059] Among them, the first type of box 1 and the second type of box 3 have the same structural form, and the specific structure of the first type of box 1 will be described.

[0060] like Figures 3a-3b As shown, the first type of box 1 is made as a single piece, consisting of two parts: a conical structure and a cylindrical structure. The conical structure and the cylindrical structure are connected to form a whole. The conical structure is located on the outside, and the cylindrical structure is located on the inside, and is movably fastened to the middle seed dispensing channel 2. Together with the outer partition of the middle seed dispensing channel 2, they form a semi-enclosed space for storing seeds. The inner ring of the part of the cylindrical structure that contacts the middle seed dispensing channel 2 is evenly distributed with multiple seed-retrieving spoons 1-1, which are used to take out a seed from the seed box and send it into the middle seed dispensing channel 2.

[0061] The outer partition of the middle seed-rearing channel 2 is located on the lower part of the middle seed-rearing channel 2. It can close the lower half of the seed box, where the seeds are stored.

[0062] The conical structure of the seed box allows seeds to flow to the bottom of the seed box, preventing seeds from accumulating on the outside of the seed box and increasing seed utilization. The conical structure of the seed box is equipped with seed inlets 1-3 for adding seeds into the seed box and discharging any remaining seeds. Seed inlets 1-3 are equipped with cover plates (not shown in the figure). The cover plates are installed during operation and removed when adding seeds.

[0063] The first type of box 1 has a cone-shaped structure with a bearing seat 1-2 in the middle for installing a proportional adjustment device 4; the bearing seat 1-2 has an output shaft connection hole 1-4 in the middle for connecting the output shaft of the proportional adjustment device 4, and the output shaft drives the seed box to rotate to complete the seed taking process.

[0064] In this embodiment, 12 seed-collecting spoons are provided. In other optional implementations, the number of seed-collecting spoons can be adjusted according to seed-collecting needs.

[0065] like Figure 3a As shown, the seed-taking spoon 1-1 protrudes from the inner wall of the seed box, and multiple seed-taking spoons 1-1 are evenly distributed circumferentially inside the cylindrical structure of the seed box; as shown... Figure 4As shown, the front end of the seed scoop 1-1 is a closed section, and the rear end of the seed scoop 1-1 is an open section. The open section and the closed section are connected to form a whole. Both the closed section and the open section are fixed to the inner wall of the cylindrical structure of the seed box. The closed section is provided with a seed discharge hole that communicates with the open section. The closed section is located at the edge of the cylindrical structure, and the open section is located on the opposite inner side of the cylindrical structure. The closed section referred to here is the one that forms a closed structure with the inner wall of the cylindrical structure of the seed box in the radial direction, and the open section is the one that forms an open structure with the inner wall of the cylindrical structure in the radial direction.

[0066] Specifically, the closed section has a C-shaped structure, which is fixedly connected to the inner wall of the cylindrical structure of the seed box. Its size can be adjusted according to the size of the seeds so that it can hold only one seed. The specific dimensions are as follows: the width B of the inner wall of the closed section is 1.5 times the maximum size of the seed, the height H of the inner wall of the closed section is 1.3 times the maximum size of the seed, and the length L of the closed section is 1.2 times the maximum size of the seed. The width and height of the inner wall of the closed section correspond to the width and height of the seed dispensing hole of the closed section, respectively.

[0067] The open section includes two oppositely arranged plates, which are respectively connected to the two sides of one end of the closed section, forming an open form that communicates with the internal space of the cylindrical structure. During the filling process, the seeds enter the closed section from the open section to complete the seed picking and cleaning process. The height H' of the side of the open section of the seed picking spoon is half of H, which is about 0.6 times the maximum size of the seed, which facilitates seed cleaning.

[0068] The open section is the entrance for seeds to enter the seed-collecting spoon, serving as a guide and diversion mechanism to prevent missed sowing due to seed accumulation. It can also play a preliminary quantitative role.

[0069] In a preferred embodiment, the two sides of the seed-collecting spoon 1-1 form an angle α with the circumferential inner wall of the seed box, ranging from 30° to 45°. This angle ensures that the seed-collecting spoon faces downwards in the seed-discharging section, allowing the seeds to be discharged from the spoon by their own weight after passing the obstruction of the side plate of the middle seed-discharging channel, and fall into the middle seed-discharging channel. If this angle is too small, the seed's movement path will change too drastically, affecting the seed filling effect; if this angle is too large, the weight of the falling seeds will be canceled out, potentially causing seed jamming; if this angle is 90 degrees, the seeds will be enclosed in the closed section of the seed-discharging section and cannot fall; if the angle is greater than 90 degrees, the seeds will return to the seed box from the open section.

[0070] The advantages of this seed-collecting spoon are: it is divided into two parts, a closed section and an open section, and integrates the seed filling and seed cleaning functions with the cooperation of the rotating seed box and the side plate of the middle seed-distribution channel. The seed filling and seed cleaning are achieved by the change of the position of the seed-collecting spoon and its own angle setting, as well as the blocking change of the side plate of the middle seed-distribution channel. It has a high single seed rate and low replanting and missed seeding rates; the structure is simple and practical, and it is easy to manufacture and use; the number of seed-collecting spoons can be set according to the requirements of plant spacing and planting efficiency by arranging them in an array on the inner wall of the seed box.

[0071] The following describes the seed removal process from the seed box:

[0072] Figure 5a The diagram shows the seed box filling process. The seed box and one side panel of the middle seed discharge channel 2 form a seed storage space that is closed at the bottom and open at the top. Seeds are stored in the space. Seed openings 1-3 are provided on the outer wall of the seed box as the seed inlet and outlet.

[0073] Seed collection process: such as Figure 5b As shown, during operation, the seed box rotates counterclockwise, and the seed-collecting scoops on the seed box wall pass through the seed population sequentially, fully agitating the population, increasing its movement, and improving the seed filling rate. The entire seed collection process can be divided into three parts: the seed filling section AB, the seed cleaning section CD, and the seed discharging section DE. Figure 5c As shown, during the process of the seed-collecting spoon moving to the filling section AB, the entire spoon is located within the population. Seeds enter the closed section through the open section of the spoon. Due to its size, the closed section can only hold one seed, while the open section may hold one or two seeds, completing the filling process. Subsequently, the spoon leaves the population and enters the cleaning section CD. At this time, the seeds in the closed section remain inside the spoon due to the protection of the side walls and the upward angle of the side walls. However, the seeds in the open section are supported entirely by the side plates as the position of the spoon changes and the side plates become horizontal. The height H' is only about 0.6 times the maximum size of the seed, which is insufficient to support the entire seed. Therefore, the seeds in the open section will fall out of the open section, completing the seed cleaning process. Then, the seed-picking spoon continues to rotate upward and enters the seed-discharging section DE. Once the seed-picking spoon passes above the side plate of the middle seed-discharging channel 2, the seed loses the support of the side wall and falls from the seed-picking spoon into the middle seed-discharging channel 2, completing the seed-discharging process. At this time, the seed-picking spoon completes the entire seed-picking process after traveling from A to E. After that, the seed-picking spoon continues to rotate counterclockwise to enter the next seed-picking process, and the seed-picking operation is carried out continuously in a repetitive cycle.

[0074] The advantages of this seed box seed collection process are: the long seed filling section allows the seed scoop to move for a longer time in the population, resulting in thorough agitation of the population, a high seed filling rate, and a low rate of missed filling; the side plates of the middle seed discharge channel are set at an angle upward, increasing the seed clearing section distance, allowing excess seeds sufficient time and travel to fall back into the seed box, reducing the reseeding rate; the seeds are discharged immediately after passing the upper part of the side plate of the middle seed discharge channel, ensuring rapid and smooth seed discharge without jamming.

[0075] Among them, such as Figures 6a-6b As shown, the intermediate seeding channel 2 is a semi-enclosed space composed of a circular intermediate cylinder 2-2 and two side plates 2-3. The upper side of the intermediate seeding channel 2 is open, and the lower side is closed. The closed side is the seeding channel.

[0076] The intermediate cylinder 2-2 is a cylindrical structure, with both sides fixedly connected to the side plates 2-3. The side plates 2-3 are arranged radially along the intermediate cylinder 2-2, and the size of the side plates 2-3 is smaller than the radial size of the intermediate cylinder 2-2, so that the upper parts of both sides of the intermediate seed discharge channel 2 are open, allowing seeds to enter the intermediate seed discharge channel 2 from the seed box.

[0077] The bottom of the intermediate cylinder 2-2 is provided with a seed outlet 2-4. After passing through the seed outlet section DE, the seeds in the seed scoop 1-1 fall out of the seed scoop 1-1 and into the intermediate seed outlet channel 2, then enter the intermediate cylinder 2-2 and fall out from the seed outlet 2-4 at the bottom of the intermediate cylinder 2-2, thus completing the sowing process.

[0078] The top of the intermediate cylinder 2-2 is equipped with a proportional adjustment port 2-5 and a power transmission port 2-6. The proportional adjustment port 2-5, together with the proportional adjustment handle 3-10, is used to adjust the sowing ratio of the two crops. The power transmission port 2-6, together with the chain drive, serves as the power input. The input sprocket 3-1 is connected to the power device (such as a motor) via a chain, which can extend from the power transmission port 2-6.

[0079] The proportional adjustment port 2-5 is a circumferential stepped opening to limit the proportional adjustment handle 3-10. The proportional adjustment handle 3-10 can be stopped at different stepped positions for proportional adjustment.

[0080] An mounting base 2-1 is provided on the side of the intermediate cylinder 2-2 to fix the entire sowing device on the frame and ensure that the intermediate cylinder remains stationary.

[0081] The bottom of the side plate 2-3 is arc-shaped and fixedly connected to the inner wall of the intermediate cylinder 2-1. The top of the side plate 2-3 is divided into a horizontal section and an upward section. The intersection of the horizontal section and the upward section is the cylindrical axis of the intermediate cylinder 2-2. The horizontal section is parallel to the ground and has a boss on it for installing the input shaft and output shaft of the proportional adjustment device 4. The upward section is inclined upward and the angle between the upward section and the horizontal section is 30°. The side plate 2-3 is generally obtuse-angled fan-shaped, which can both lengthen the seed cleaning section as much as possible to ensure the best seed cleaning effect and ensure the tilting effect of the seed scoop, so that the seeds can be smoothly discharged from the seed scoop 1-1 and avoid seed jamming.

[0082] like Figures 7-8As shown, the proportion adjustment device 4 is mounted on the boss of the intermediate seeding channel 2 and the bearing seat 1-2 of the seed box via bearings mounted on the input shaft 3-2, the first output shaft 3-4, and the second output shaft 3-6. The two ends of the first output shaft 3-4 and the second output shaft 3-6 are respectively mounted on the bearing seats 1-2 of the first seed box 1 and the second seed box 3 via bearings. The middle parts of the input shaft 3-2, the first output shaft 3-4, and the second output shaft 3-6 are mounted on the boss of the intermediate seeding channel 2 via bearings.

[0083] The input shaft 3-2 is a through shaft, and is equipped with an input sprocket 3-1 and a proportional adjustment gear set 3-3. Bearings are installed on both sides of the input sprocket 3-1, and they are symmetrically installed on the middle seeding channel.

[0084] The output shaft consists of a first output shaft 3-4 and a second output shaft 3-6, both coaxially aligned and equipped with identical driven gears. Specifically, the first driven gear 3-5 is mounted on the first output shaft 3-4, and the second driven gear 3-7 is mounted on the second output shaft 3-6. Bearings 3-8 are mounted on both sides of the driven gears. The inner bearing is installed in a boss on the central seed dispensing channel 2, while the outer bearing is installed in a bearing seat 1-2 at the center of the seed box. The outer ends of the first output shaft 3-4 and the second output shaft 3-6 are splined shafts, which mate with the splined hole (output shaft connection hole 1-4) at the center of the seed box. They are fixed to the seed box by a shaft retaining ring, causing the seed boxes on both sides to rotate together with the output shaft. The first output shaft 3-4 is fixedly connected to the first seed box 1, and the second output shaft 3-6 is fixedly connected to the second seed box 3.

[0085] The proportional adjustment gear set 3-3 meshes with the intermediate gear 3-9, which in turn meshes with the driven gear. The intermediate gear 3-9 is mounted on the intermediate shaft 3-11. Specifically, the intermediate shaft 3-11 is a through shaft on which two intermediate gears 3-9 are symmetrically mounted. The intermediate gears are fixed in axial position on the intermediate shaft and can rotate freely around the axis. The proportional adjustment gear set 3-3 includes a first proportional adjustment gear set 3-3-1 and a second proportional adjustment gear set 3-3-2. The first proportional adjustment gear set 3-3-1 meshes with one of the intermediate gears 3-9, which meshes with the first driven gear 3-5. The second proportional adjustment gear set 3-3-2 meshes with the other intermediate gear 3-9, which meshes with the second driven gear 3-7. This transmits power from the input shaft 3-1 to the first and second output shafts, thus realizing the power transmission function.

[0086] The proportional adjustment handle 3-10 is sleeved on the inner shaft section of the second output shaft 3-6. The upper end of the proportional adjustment handle 3-10 passes through the proportional adjustment port 2-5 of the middle seeding channel 2 and cooperates with the proportional adjustment port 2-5 of the middle seeding channel 2. The proportional adjustment handle 3-10 is restricted from moving in the circumferential direction by the stepped limit of the proportional adjustment port (the proportional adjustment handle 3-10 can be engaged at different steps of the proportional adjustment port 2-5). By manually changing the position of the handle on the proportional adjustment port 2-5, the meshing position of the middle gear 3-9 and the proportional adjustment gear set 3-3 is changed, thereby changing the seeding ratio on both sides and realizing the proportional adjustment function.

[0087] like Figures 9a-9b As shown, the proportional adjustment handle 3-10 consists of a handle body 3-10-1, a floating rod 3-10-2, a longitudinal adjustment spring 3-10-3, and a transverse adjustment spring 3-10-4. The handle body 3-10-1 and the floating rod 3-10-2 are sleeved together and then sleeved together on the second output shaft 3-6. The axial positions of the handle body 3-10-1 and the floating rod 3-10-2 are relatively fixed, and they can rotate relative to each other around the axis.

[0088] The handle body 3-10-1 and the floating rod 3-10-2 can move axially along the second output shaft 3-6; the handle body 3-10-1 extends upward and passes through the proportional adjustment port 2-5, and the outer end of the floating rod 3-10-2 passes through the radial through hole on the intermediate shaft 3-11, which can drive the intermediate shaft 3-11 to move axially.

[0089] A longitudinal adjusting spring 3-10-3, a compression spring, is installed between the side of the handle body 3-10-1 and the side of the floating rod 3-10-2. This spring adjusts the longitudinal position of the intermediate shaft 3-11, pressing the intermediate gear 3-9 on the floating rod 3-10-2 and the intermediate shaft 3-11 against the input shaft 3-2 and the output shaft, ensuring effective power transmission. Here, "longitudinal" refers to the direction perpendicular to the length of the floating rod. Figure 9b As shown.

[0090] A lateral adjusting spring 3-10-4 is installed between the outer end of the floating rod 3-10-2 and the intermediate shaft 3-11. This spring adjusts the lateral position of the intermediate shaft 3-11, causing it to press the intermediate gear 3-9 against the input shaft 3-2 and the output shaft, thus ensuring effective power transmission. Here, "lateral" refers to the direction of the floating rod's length extension. Figure 9b As shown.

[0091] This allows the floating rod to double-pressurize and adjust, pressing the intermediate gear tightly against the proportional adjustment gear set and the driven gear, resulting in good power transmission effect and stable function.

[0092] like Figure 10As shown, the proportional adjustment gear set 3-3 includes a first proportional adjustment gear set 3-3-1 and a second proportional adjustment gear set 3-3-2, which are respectively installed at both ends of the input shaft 3-2.

[0093] Each proportional adjustment gear set is a gear set formed by stacking multiple gears with the same module but different numbers of teeth. The proportional adjustment gear set drives the driven gear to rotate through the intermediate gears 3-9, thereby driving the seed box to rotate and completing the seed collection and intercropping process.

[0094] like Figures 11a-11c As shown, the gears used in the proportional adjustment gear set are not full-tooth gears, but incomplete gears with a certain number of teeth spaced apart; each proportional adjustment gear set consists of multiple incomplete gears arranged in sequence, and the diameter of the multiple incomplete gears gradually increases from one side to the other, forming a stepped shape, which matches the stepped shape of the proportional adjustment port 2-5; it should be noted that the steps of the proportional adjustment gear set are set in the opposite direction to the steps of the proportional adjustment port 2-5.

[0095] The arrangement sequence and method of the multiple incomplete gears in the two sets of proportional adjustment gear sets are exactly the same, and the direction of the resulting stepped arrangement is also the same. Each of the two sets of proportional adjustment gear sets consists of multiple incomplete gears numbered sequentially from one side to the other. The incomplete gears with the same number in both sets have the same diameter. Each incomplete gear with the same number in both sets has multiple sets of effective teeth that are spaced apart and evenly distributed, with different numbers of effective teeth. Furthermore, the incomplete gears with the same number in both sets are installed alternately, and the stacking of the incomplete gears with the same number in both sets forms a complete gear.

[0096] The effective number of gear sets and effective number of teeth are different for different numbers of incomplete gears in each proportional adjustment gear set, and the effective tooth ratio of different numbers of incomplete gears in the two proportional adjustment gear sets is also different.

[0097] Therefore, when the intermediate shaft 3-11 moves axially driven by the proportional adjustment handle 3-10, the two intermediate gears 3-9 can mesh with incomplete gears of different numbers. Thus, the different effective number of teeth of the proportional adjustment gear set changes the speed of the corresponding driven gear, which drives the speed of the seed box to change via the output shaft, thereby changing the planting ratio of the two crops.

[0098] In this proportional adjustment device, the first proportional adjustment gear set, an intermediate gear, a first driven gear, and a first output shaft constitute the first transmission component, and the second proportional adjustment gear set, another intermediate gear, a second driven gear, and a second output shaft constitute the second transmission component.

[0099] The following explanation uses the example of setting 5 incomplete gears in each proportional adjustment gear set.

[0100] The two sets of proportional adjustment gears are numbered 1# to 5# from left to right for their incomplete gears. Incomplete gears with the same number have the same number of teeth, but different effective number of teeth. Taking incomplete gear #1 as an example, the shapes of the two sets of incomplete gear #1 are as follows: Figure 11a , Figure 11b As shown, the effective teeth of the first group of incomplete gear #1 are 3 sets of 3 teeth with 2 teeth in between, and the effective teeth of the second group of incomplete gear #1 are 3 sets of 2 teeth with 3 teeth in between. When installed, the two gears are staggered, and the effective teeth of the first group and the effective teeth of the second group overlap at intervals. The two are superimposed to form a complete gear.

[0101] The corresponding intercropping process is as follows:

[0102] Before operation, manually adjust the proportional adjustment handle to a certain position (i.e., a certain step of the proportional adjustment port), and the intermediate gears on both sides of the intermediate shaft will mesh with a pair of incomplete gears with the same number on the two sets of proportional adjustment gear sets.

[0103] During operation, power is transmitted to the input shaft via the input sprocket located in the middle of the input shaft. The proportional adjustment gear sets, intermediate gears, and driven gears on both sides form independent transmission systems, driving the first and second output shafts to rotate. The two transmission systems do not interfere with each other. Taking the #3 gear of the two proportional adjustment gear sets as an example, the effective teeth of set 1 are 3 sets of 4 teeth, and the effective teeth of set 2 are 3 sets of 3 teeth. When the input shaft rotates during operation, the effective teeth of the incomplete gear of set 1 first mesh with the intermediate gear, driving the first output shaft to rotate, thereby driving the seed box on one side to rotate. The system moves to complete the seed collection and arrangement of crop 1. After the effective gears have rotated, the first set of incomplete gears enters the interval section, and the seed collection and arrangement process of crop 1 stops. At the same time, the second set of incomplete gears enters the effective gear section and begins to mesh with the middle gear, thereby driving the seed box on the other side to rotate, completing the seed collection and arrangement of crop 2. After the effective gears have rotated, the system re-enters the effective gears of the first set of incomplete gears and restarts the seed collection and arrangement of crop 1. This cycle repeats to achieve the arrangement of alternate crops 1 and 2. The arrangement ratio of the two crops is determined by the ratio adjustment device.

[0104] The range of proportional adjustment during the interleaving process is determined by the ratio of the number of teeth to the effective number of teeth in the proportional adjustment gear sets 1# to 5#. In this embodiment, the ratio of the total number of teeth to the effective number of teeth in the 5 sets of incomplete gears is designed as follows:

[0105] #1 Incomplete gear, 15 teeth, the effective tooth ratio of group 1 to group 2 incomplete gears is 2:3;

[0106] #2 incomplete gear, 18 teeth, the effective tooth ratio of group 1 to group 2 incomplete gears is 2:4;

[0107] Incomplete gear #3, 21 teeth, the effective tooth ratio of group 1 to group 2 incomplete gears is 3:4;

[0108] #4 incomplete gear, 24 teeth, the effective tooth ratio of group 1 to group 2 incomplete gears is 2:6;

[0109] 5# Incomplete gear, 27 teeth, the effective tooth ratio of group 1 to group 2 incomplete gears is 3:6.

[0110] In summary, the five pairs of incomplete gears in the two sets of proportional adjustment gear sets can complete five intercropping patterns: 2:3, 2:4, 2:6, 3:4, and 3:6. These patterns are highly compatible with the main planting patterns and offer a wide range of planting options, making them suitable for mainstream intercropping patterns among various crops such as soybeans and corn, and peanuts and corn.

[0111] The following is a comparative description of the intercropping mode of this invention and the traditional intercropping mode:

[0112] like Figure 13a As shown, traditional intercropping involves sowing the same crop in rows. This requires integrating several seed metering devices onto a single seeder based on the planting pattern, with fixed seed metering devices set according to the intercropping ratio. This results in intercropping seeders being large and cumbersome, inflexible in operation, difficult to transport and turn around, and only adaptable to one fixed intercropping ratio. For example, with a corn-soybean intercropping ratio of 2:3, a traditional intercropping seeder needs to have 5 seed metering devices on the frame, with 3 rows of soybeans in the middle and 1 row of corn on each side. Figure 13a The solid line in the middle represents the number of seeds sown at one time. The machine operates horizontally, sowing 5 rows at a time, and repeating the cycle to form a 2:3 intercropping pattern.

[0113] Unlike row-based intercropping sowing using a transmission mechanism, the seed metering device of this invention performs single-row intercropping sowing, with each row consisting of corn and soybeans intercropped, forming an intercropping planting pattern through repeated cycles. Taking a corn-to-soybean intercropping ratio of 2:3 as an example, adjusting the ratio control handle to position 1 engages the #1 incomplete gear of the ratio control gear set. Corn seeds are placed in the left seed box, and soybean seeds in the right seed box. During operation, the seed metering device works longitudinally. Figure 13b The dashed box represents the working row of the seeding device, which cycles back and forth to form a 2:3 intercropping pattern.

[0114] Compared with traditional intercropping methods, the seeding device of this invention integrates the intercropping function of two crops, greatly reduces the size of the intercropping seeder, is flexible in operation, the working width of the seeder can be freely configured according to the size of the plot, the intercropping ratio can be freely adjusted, and it can adapt to the different intercropping mode requirements between different crops, thus greatly improving the intercropping function.

[0115] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An integrated seed metering device for intercropping, characterized in that, The seed box includes an intermediate seed channel, a first seed box and a second seed box arranged on both sides of the intermediate seed channel, and a proportion adjustment device fixedly arranged on the intermediate seed channel; the proportion adjustment device includes a first transmission assembly and a second transmission assembly, the first transmission assembly is connected with the first seed box, the second transmission assembly is connected with the second seed box, the first transmission assembly and the second transmission assembly operate alternately, so that the first seed box and the second seed box rotate alternately relative to the intermediate seed channel, different seeds are alternately discharged from the intermediate seed channel, and intercropping seed planting is performed; The first transmission assembly includes a first proportion adjustment gear set, the first proportion adjustment gear set is engaged with a first intermediate gear, the first intermediate gear is engaged with a first driven gear, and the first driven gear is fixedly connected with the first seed box through a first output shaft; the second transmission assembly includes a second proportion adjustment gear set, the second proportion adjustment gear set is engaged with a second intermediate gear, the second intermediate gear is engaged with a second driven gear, and the second driven gear is fixedly connected with the second seed box through a second output shaft; the first proportion adjustment gear set and the second proportion adjustment gear set are respectively installed at both ends of an input shaft, an input sprocket of the input shaft is connected with a power device, and the first output shaft and the second output shaft are coaxially arranged; The first proportion adjustment gear set and the second proportion adjustment gear set each consist of a plurality of incomplete gears arranged in sequence; the diameters of the plurality of incomplete gears gradually increase from one side to the other side, forming a stepped form; the plurality of incomplete gears of each proportion adjustment gear set are sequentially numbered from one side to the other side, the diameters of the incomplete gears with the same number in the two proportion adjustment gear sets are the same; the incomplete gears with the same number in the two proportion adjustment gear sets each have a plurality of groups of effective teeth arranged at intervals and uniformly; the number of effective teeth is different; the incomplete gears with the same number in the two proportion adjustment gear sets are installed in a staggered manner, and the incomplete gears with the same number in the two proportion adjustment gear sets can form complete gears in a superposed manner; the number of groups of effective teeth and the number of effective teeth of the incomplete gears with different numbers in each proportion adjustment gear set are different, and the ratio of the number of effective teeth of the incomplete gears with different numbers in the two proportion adjustment gear sets is also different; The first intermediate gear and the second intermediate gear are installed on an intermediate shaft, the second output shaft is sleeved with a proportion adjustment handle, a stepped proportion adjustment opening is arranged at the top of the intermediate seed channel, the proportion adjustment handle passes through the proportion adjustment opening and can change the position in the proportion adjustment opening; The proportion adjustment handle includes a handle body, the handle body and a floating rod are coaxially and sleevedly connected, the floating rod passes through a radial through hole of the intermediate shaft, and the handle body and the floating rod can move axially along the second output shaft; a longitudinal adjustment spring is arranged between the side of the handle body and the side of the floating rod, and a transverse adjustment spring is arranged between the outer end of the floating rod and the intermediate shaft.

2. The seed meter of claim 1, wherein, The first seed box and the second seed box each include a conical cylindrical structure and a cylindrical structure connected with each other, the cylindrical structure is movably buckled on the intermediate seed channel, a plurality of seed taking spoons are uniformly arranged on the inner ring of the cylindrical structure, and the conical cylindrical structure is provided with a seed discharging opening.

3. The seed meter of claim 2, wherein, The seed taking spoon comprises an open section and a closed section connected with each other, the closed section is provided with a seed discharge hole in communication with the open section; the closed section is in C-shaped structure and is fixedly connected with the inner wall of the cylindrical structure; the open section comprises two oppositely arranged plate bodies, the two plate bodies are respectively connected to the two sides of one end of the closed section; the two sides of the seed taking spoon and the inner wall of the cylindrical structure are circumferentially formed at an angle α, and α is 30°-45°.

4. The seed meter of claim 1 wherein, The intermediate seed discharge channel comprises an intermediate cylinder, side plates are arranged on the two sides of the intermediate cylinder, the side plates are arranged along the radial direction of the intermediate cylinder, and the size of the side plates is smaller than the radial size of the intermediate cylinder; the side plates are arranged on the lower side of the intermediate cylinder and form a semi-closed space with the intermediate cylinder, and the bottom of the intermediate cylinder is provided with a seed discharge hole.

5. The seed meter of claim 4, wherein, The bottom of the side plate is in circular arc shape and is fixedly connected with the inner wall of the intermediate cylinder, the top of the side plate is in horizontal section and ascending section, the intersection of the horizontal section and the ascending section is the axis of the intermediate cylinder, and the horizontal section is parallel to the ground; the ascending section is arranged in an upward inclined manner, the included angle between the ascending section and the horizontal section is an acute angle, and the whole side plate is in obtuse angle sector shape.

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