Seed taking assembly for seeder, seed taking wheel body and seeder

Abstract

The utility model discloses a seed taking assembly for a seeder, a seed taking wheel body and the seeder, and belongs to the technical field of seeding equipment. The wheel body assembly comprises an arc-shaped supporting unit, and an installation containing groove is formed in the arc-shaped supporting unit. A seed metering through groove communicated with the mounting storage groove is formed in the arc-shaped supporting unit; the seed taking device is rotationally mounted in the mounting storage groove, and a seed taking nest is formed in the seed taking device; an arc-shaped protruding face is formed on the outer wall of the peripheral side, provided with a seed taking nest, of the seed taking device, a seed blocking protrusion is arranged on the arc-shaped supporting unit, a seed avoiding end face is formed on the end face, right opposite to the arc-shaped protruding face, of the seed blocking protrusion, and the minimum distance between the seed avoiding end face and the arc-shaped protruding face is larger than the waist diameter of one seed. The maximum distance between the seed avoiding end face and the arc-shaped protruding face is smaller than the sum of the waist diameter sizes of two seeds. And the elastic seed cleaning piece is mounted on one side of the mounting storage groove opposite to the arc-shaped convex surface. The wheel body assembly disclosed by the utility model is beneficial to improving the reliability and the stability of seed taking and seed feeding of the seeder.

Description

Technical Field

[0001] The utility model relates to the technical field of sowing machinery and equipment, in particular to a seed taking component for a seeder, a seed taking wheel body and a seeder. Background Art

[0002] Wheat is a high-density crop, and a moderate planting density is beneficial to improving the uniformity of wheat growth, enhancing the wheat's resistance to lodging, and also beneficial to increasing wheat yield; in order to improve the moderation of wheat planting density in the prior art, a hole seeder is used for sowing, and in the process of sowing wheat, it is necessary to put a suitable number of wheat seeds in each wheat hole; therefore, before the wheat seeds are put into the soil, a seed taking mechanism provided in the hole seeder is required to take out a suitable number of wheat seeds at the seed taking position, and then the wheat seeds taken at the seed taking position are put through the hole seeder nozzle provided on the hole seeder, and then the seeds are put into the soil.

[0003] Furthermore, the hole-seeding device mainly includes a roller assembly, a seed-taking mechanism and a seed hole-seeding component. A seed storage cavity for storing seeds is formed in the roller assembly. The seed-taking mechanism is installed on a supporting wheel body on the roller assembly. The seed-taking mechanism mainly includes a seed-taking device, a rotating shaft, a swing arm and a torsion spring. The seed hole-seeding component is installed on the outer wheel surface of the supporting wheel body. Furthermore, in order to reduce the production and manufacturing cost of the hole-seeding device, a plurality of wheel assembly units are usually obtained by manufacturing, and then the plurality of wheel assembly units are assembled to obtain a ring-shaped supporting wheel body. Furthermore, a radial inner circumferential interval is provided on the wheel assembly unit. The cam is provided with a mounting groove for mounting a seed remover, and a seed remover is rotatably mounted in the mounting groove. The seed remover is mounted on a rotating shaft, a torsion spring is sleeved on the rotating shaft, and a torsion arm 1 on the torsion spring stops against the seed remover, and a torsion arm 2 on the torsion spring stops against the supporting wheel body. One end of the rotating shaft is connected to the swing arm, and a swing drive rail is also provided in the roller assembly. The swing drive rail, the swing arm and the torsion spring cooperate to drive the seed remover to rotate in the mounting groove. A seed removal nest is provided on the seed remover, and the seed remover rotates in the mounting groove so that the seed removal nest is deflected to have a seed removal position and a seed throwing position. The seed removal nest is used to remove seeds at the seed removal position, and the seed removal nest is used to throw seeds at the seed throwing position.

[0004] Furthermore, in the process of taking seeds through the seed taker, in order to realize seed cleaning, the seeds that have not fallen into the seed taking nest are blocked and cleared, so that only the seeds that have fallen into the seed taking nest are deflected from the seed taking position to the seed dropping position and dropped. Therefore, it is necessary to install an elastic seed cleaning member on one side of the installation groove body. The elastic seed cleaning member is installed on the inner wheel surface and is located on one side of the seed taker. In the process of the seed taker being deflected from the seed dropping position to the seed dropping position, the elastic seed cleaning member sweeps the outer wall of the seed taker to block and clear the seeds that have not fallen into the seed taking nest. In addition, the support wheel body is provided with a plurality of seed dropping channels corresponding to the plurality of installation grooves, and the plurality of seed dropping channels are respectively connected to the installation grooves, and the outer sides of the seed dropping channels pass through the support wheel body to form seed dropping openings. The outer sides of the seed dropping openings are respectively provided with hole sowing nozzles. The timing of sowing is controlled by controlling the opening timing of the hole sowing nozzles, so that seeds are dropped into the seed dropping openings through the seed taker.

[0005] However, wheat seeds vary in size, and the rolling conditions of the hole seeder are more complicated. The movement of wheat seeds in the seed removal nest of the seeder is also uncertain. In practical wheat sowing operations, due to the design deficiencies of the wheel assembly unit and the seed removal components, the hole seeder is prone to seed jamming problems and seeding row shortages, which are not easy to be discovered during the sowing operation. It is not discovered until the wheat grows that there are few seeds in the wheat holes, resulting in few seedlings, or even missing seeds, resulting in missing seedlings, which has an adverse effect on the appropriateness of the wheat planting density and wheat yield. Based on this, our company has found through research that when the seeds stored in the seed removal nest are passed through the elastic seed cleaning piece, The seeds stored in the seed taking hole are easy to move out of the edge of the seed taking hole, especially when multiple wheat seeds are stored in one seed taking hole. The wheat seeds stored in the seed taking hole are easy to move out of the edge of the seed taking hole and get stuck in the gap between the outer wall of the seed taking hole provided on the seed taking device and the inner wall of the peripheral side of the installation groove body due to the movement of the wheat seeds in the seed taking hole. This can easily cause the seeds to get stuck, making it impossible for the corresponding seed taking device to sow seeds normally, and even causing the corresponding seed taking device to have abnormalities in subsequent seed taking and sowing, causing the hole sowing device to have seed stuck problems and the problem of missing seeds in the sowing row. In addition, the existing hole sowing device also has the above-mentioned seed stuck problems and the problem of missing seeds in the sowing row when sowing soybeans and other types of seeds. Therefore, there is an urgent need for a seed taking component that is conducive to improving the reliability and stability of seed taking and sowing by the seeder. Summary of the Invention

[0006] The purpose of the present invention is to overcome at least one of the shortcomings of the above-mentioned prior art and to provide a seed removal component for a seeder that is conducive to improving the reliability and stability of seed removal and sowing of the seeder; in addition, a seed removal wheel body for a seeder and a seeder are also provided.

[0007] The technical solution of the utility model to solve the above technical problems is as follows:

[0008] According to one aspect of the present application, a seed removal assembly for a seeder is provided, comprising:

[0009] An arc-shaped support unit, wherein a mounting and receiving groove is provided on the radial inner side of the arc-shaped support unit, and the mounting and receiving groove is open at one end toward the radial inner side of the arc-shaped support unit; the arc-shaped support unit is further provided with a seeding through groove, and the seeding through groove is located on one side of the mounting and receiving groove in the circumferential direction and is connected to the mounting and receiving groove, and the end of the seeding through groove facing away from the mounting and receiving groove passes through the radial outer side of the arc-shaped support unit to form a seeding opening;

[0010] The seed taker is rotatably mounted in the mounting and receiving groove, with the rotation center axis of the seed taker facing the axial direction of the arc-shaped support unit, and a seed taking nest is provided on the seed taker, and the seed taker can rotate circumferentially in the mounting and receiving groove under the drive of the rotation drive mechanism so that the seed taking nest has a seed entry position and a seed dropping position, and when the seed taking nest is in the seed entry position, the open end of the seed taking nest faces the radial inner side of the arc-shaped support unit and the seeds close to the seed taking nest can enter and be stored in the seed taking nest; when the seed taking nest is in the seed dropping position, the open end of the seed taking nest faces the seed discharging slot and can drop the seeds stored in the seed taking nest into the seed discharging slot;

[0011] The seed taker is provided with an arc-shaped convex surface formed on the outer side wall of the seed taking nest, and a seed-blocking protrusion is provided on the arc-shaped supporting unit facing the arc-shaped convex surface, and the seed-blocking protrusion is arranged on one side of the installation and receiving groove and close to the open end of the installation and receiving groove, and the seed-blocking protrusion protrudes toward the arc-shaped convex surface and extends into the installation and receiving groove, and the end face of the seed-blocking protrusion facing the arc-shaped convex surface forms a seed-avoiding end face, and the minimum distance between the seed-avoiding end face and the arc-shaped convex surface is distance one, and the distance one is greater than the waist diameter of one seed, and the maximum distance between the seed-avoiding end face and the arc-shaped convex surface is distance two, and the distance two is less than the sum of the waist diameters of two seeds;

[0012] An elastic seed clearing member is installed on one side of the installation and receiving groove facing the arc-shaped raised surface, and the elastic seed clearing member is located radially inward of the seed-blocking protrusion. The elastic seed clearing member extends close to the arc-shaped raised surface to form an elastic seed clearing portion.

[0013] The beneficial effects of the present invention are as follows: the seed taker in this embodiment is provided with an arc-shaped convex surface formed by the outer wall of the peripheral side of the seed taking nest, and a seed-blocking convex surface is provided on the arc-shaped support unit facing the arc-shaped convex surface, and the end face of the seed-blocking convex surface facing the arc-shaped convex surface forms a seed-avoiding end face, and the minimum distance between the seed-avoiding end face and the arc-shaped convex surface is greater than the waist diameter of a seed, and the maximum distance between the seed-avoiding end face and the arc-shaped convex surface is less than the sum of the waist diameters of two seeds. When the seed taker is turned from the seed-taking position to the seed-dropping position, even if the seed is stored in the seed-dropping position, the seed-dropping position can be opened. The seeds in the seed taking nest move outward from the edge of the seed taking nest and enter between the seed avoiding end face and the arcuate convex surface. The seeds that enter between the seed avoiding end face and the arcuate convex surface can pass through the gap between the seed avoiding end face and the arcuate convex surface and will not get stuck between the seed avoiding end face and the arcuate convex surface, thereby avoiding the seeds from getting stuck between the seed avoiding end face and the arcuate convex surface, and also avoiding two or more seeds from overlapping and being squeezed between the seed avoiding end face and the arcuate convex surface to cause the seeds to get stuck, which is beneficial to improving the reliability and stability of the seeding device in seeding and sowing. Therefore, when using a seeding device including the seed taking assembly in this embodiment to sow wheat seeds, it is beneficial to improve the reliability and stability of the seeding device in seeding and sowing wheat seeds, thereby improving the appropriateness of the wheat planting density. Furthermore, by installing an elastic seed cleaning piece on the radial inner side of the seed blocking protrusion, the seeds that have not fallen into the seed taking nest can be blocked and cleared by the elastic seed cleaning piece during the seed taking process, so that only the seeds that fall into the seed taking nest are deflected from the seed taking position to the seed throwing position and dropped.

[0014] In addition, based on the above technical solution, the present invention can also be improved as follows and can also have the following additional technical features.

[0015] According to one embodiment of the present application, the size of the spacing 1 is a, and the range of a is 4.3 mm. <a<6.5mm。

[0016] The spacing one in this embodiment is greater than 4.3mm, and the spacing one is greater than the waist diameter of a seed. When the seed enters the spacing one between the seed avoidance end face and the arc-shaped raised surface, the seed entering the spacing one can pass through the spacing one, thereby avoiding the seed being stuck between the seed avoidance end face and the arc-shaped raised surface; further, the spacing one in this embodiment is less than 6.5mm. When the elastic seed-clearing part is squeezed with the seed, the elastic seed-clearing part generates elastic deformation toward the side of the seed-blocking protrusion, and when the elastic seed-clearing part that generates elastic deformation is squeezed with the seed-blocking protrusion, the seed-blocking protrusion can constrain the degree of deformation of the elastic seed-clearing part, thereby reducing or avoiding the seed from the seed-clearing part and the elastic seed-clearing part from squeezing into the space between the seed-avoiding end face and the arc-shaped raised surface during the deflection of the seed-picking device from the seed-picking position to the seed-dropping position, which is beneficial to improving the blocking effect of the seed-blocking protrusion in assisting the elastic seed-clearing part on the seed.

[0017] According to one embodiment of the present application, the seed-discharging through groove includes a first seed-discharging through groove and a second seed-discharging through groove, the first seed-discharging through groove and the second seed-discharging through groove being located on one side of the installation and receiving groove in the circumferential direction and being communicated with the installation and receiving groove respectively, a seed-discharging through groove is provided between the ports of the first seed-discharging through groove and the second seed-discharging through groove facing the installation and receiving groove, the seed-discharging through groove is connected to the arc-shaped support unit and extends close to the arc-shaped convex surface to form a seed-discharging end, the seed-discharging end is arranged opposite to the seed remover, and the seed-discharging end is provided with an arc-shaped avoidance recessed groove opposite to the arc-shaped convex surface;

[0018] The seeding opening includes a first seeding opening and a second seeding opening, and one end of the first seeding slot and the second seeding slot, which are away from the installation receiving slot, respectively passes through the radial outer side of the arc-shaped support unit to form the first seeding opening and the second seeding opening;

[0019] There are multiple seed taking holes, and the multiple seed taking holes are spaced apart along the axial direction of the seed taking device. The seed separating rib is located in the middle of the multiple seed taking holes.

[0020] The seeding slots in this embodiment include seeding slot 1 and seeding slot 2, and the seeding ports include seeding port 1 and seeding port 2. The multiple arc-shaped support units in this embodiment are connected end to end in a circumferential direction to form a support wheel body; it is convenient to respectively install hole sowing nozzles on the outer sides of seeding port 1 and seeding port 2, and the timing of sowing is controlled by controlling the opening timing of the hole sowing nozzles, so as to realize the delivery of seeds to two seed delivery ports through one seed remover, which is beneficial to reduce the number of wheel assembly units used to assemble the support wheel body with the same diameter and reduce the workload of assembling the support wheel body, and also beneficial to reduce the number of seed removers that need to be set to further reduce the production cost of the hole sowing seeder. Furthermore, the present embodiment has a plurality of seed taking nests, through which seeds can be taken, and the number of seeds required for two sowing points can be obtained together through the plurality of seed taking nests, thereby reducing the volume of the seed taking nests and reducing the number of seeds stored in each seed taking nest, and reducing the difference in the number of seeds obtained by different seed taking nests due to the different postures and extrusion methods of multiple seeds in the seed taking nests. In particular, when obtaining one seed through one seed taking nest, after the seeds are put into the plurality of seed taking nests, the put seeds are separated and isolated into the seed discharge slot one and the seed discharge slot two by the seed separation rib, which is conducive to improving the consistency of the number of seeds put into the seed discharge slot one and the seed discharge slot two by the seed taker, thereby improving the consistency of the number of seeds put into the two seed discharge ports by one seed taker.

[0021] According to one embodiment of the present application, a plurality of seed avoidance openings are provided on the elastic seed cleaning portion, facing the plurality of seed removal holes.

[0022] In this embodiment, multiple seed avoidance openings are provided on the elastic seed cleaning portion, one by one facing the multiple seed taking nests. In the process of the seed remover deflecting from the seed taking position to the seed dropping position, when a small part of the seeds stored in the seed taking nest protrudes from the seed taking nest, the part of the seeds protruding to the outside of the seed taking nest can pass through the seed avoidance opening, thereby allowing the seeds stored in the seed taking nest but with a small part protruding from the seed taking nest to pass through, thereby increasing the seed taking rate of the seed taking nest, especially when each seed taking nest can accommodate multiple seeds.

[0023] According to one embodiment of the present application, there are two seed taking holes, and the two seed taking holes are spaced apart along the axial direction of the seed taking device, and the seed separating rib is located in the middle of the two seed taking holes.

[0024] In this embodiment, there are two seed-taking nests, and seeds are taken through the two seed-taking nests. The number of seeds required for the two sowing points is obtained together through the two seed-taking nests. The seed separation rib is located in the middle of the two seed-taking nests, which makes it convenient for one seed-taking nest to bear the number of seeds required for one seed-putting opening, which is beneficial to reducing the number of seed-taking nests, simplifying the structure of the seed-picker and reducing the production cost of the seed-picker.

[0025] According to one embodiment of the present application, the seed removal assembly for the seeder further includes:

[0026] An arc-shaped limiting unit is installed on the radial outer side of the arc-shaped supporting unit, and a seed outlet groove is provided on the radial inner side of the arc-shaped limiting unit facing the seeding opening. The seed outlet groove is connected to the seeding opening toward the end of the arc-shaped supporting unit, and one end of the seed outlet groove, which is away from the arc-shaped supporting unit, radially passes through the radial outer side of the arc-shaped limiting unit.

[0027] The radial inner side of the arc-shaped limiting unit is also provided with a second seed outlet groove facing the second seeding opening, and the second seed outlet groove is connected with the second seeding opening toward the port of the arc-shaped supporting unit, and the end of the second seed outlet groove facing away from the arc-shaped supporting unit radially passes through the radial outer side of the arc-shaped limiting unit.

[0028] The seed removal assembly for the seeder in this embodiment also includes an arc-shaped limiting unit, which is installed on the radially outer side of the arc-shaped support unit. The radially inner side of the arc-shaped limiting unit is also provided with a seed outlet groove 2 facing the seed feeding port 2, so that the seed outlet groove 1 is connected with the seed discharge groove 1 adjacent thereto to form a seed discharge channel 1, and the seed outlet groove 2 is connected with the seed discharge groove 2 adjacent thereto to form a seed discharge channel 2, which is beneficial to the formation of seed discharge channel 1 and seed discharge channel 2, thereby helping to reduce the production and manufacturing costs of the seeder.

[0029] The cam is connected to the outer wall of the seed dispensing device by a threaded cantilever cam, and the threaded cantilever cam is connected to the outer wall of the seed dispensing device by a threaded cantilever cam.

[0030] A second seed discarding slot is provided on the radial inner side of the arc-shaped limiting unit, facing the first seed discarding slot. The port of the second seed discarding slot close to the first seed discarding slot is connected to the first seed discarding slot, and the end of the second seed discarding slot away from the first seed discarding slot passes through the arc-shaped limiting unit.

[0031] In this embodiment, a seed falling guide protrusion is provided between the seed discarding groove one and the seed outlet groove one and the seed outlet groove two, so that the seeds thrown from the seed taking nest are guided to move toward the seed outlet groove one and the seed outlet groove two by the seed falling guide protrusion, so that the seeds thrown from the seed taking nest move toward the seed outlet groove one and the seed outlet groove two; further, the minimum spacing between the end face of the seed falling guide protrusion facing the seed taker and the radial outer side wall of the seed taker is spacing three, and the size of spacing three is larger than the waist diameter of a seed. When a seed enters spacing three, the seed entering spacing three can enter the seed discarding groove one through spacing three and be discharged outward from seed discarding groove one, thereby avoiding the accumulation of seeds in spacing three and causing seed jamming, which is beneficial to improving the reliability and stability of the seed seeder in taking and sowing seeds.

[0032] According to one embodiment of the present application, one end of the second discarded seed through groove away from the first discarded seed through groove axially passes through the arc-shaped limiting unit.

[0033] In this embodiment, the second abandoned seed groove is axially extended with an arc-shaped limiting unit at one end away from the first abandoned seed groove, which is convenient for abandoning seeds from the lateral direction of the seeder, and the seeds discharged from the second abandoned seed groove are discharged outside the sowing row area, so as to avoid the seeds discharged from the second abandoned seed groove affecting the appropriateness of the planting density in the sowing row area, especially for the sowing of wheat seeds.

[0034] According to another aspect of the present application, a seed wheel body for a seeder is provided, comprising:

[0035] The above-mentioned seed taking assembly for the seeder is provided with a plurality of seed taking assemblies, and the plurality of seed taking assemblies are connected end to end in a circumferential direction to form a circular supporting wheel body.

[0036] The seeding wheel for the seeder in this embodiment includes the above-mentioned seeding assembly, and multiple seeding assemblies are connected end to end circumferentially to form a circular supporting wheel. When the seeder including the seeding wheel in this embodiment is used to sow seeds, when the seeds enter the space between the seed avoidance end face and the arc-shaped raised surface, the seeds that enter the space between the seed avoidance end face and the arc-shaped raised surface can pass through the space between the seed avoidance end face and the arc-shaped raised surface and will not get stuck between the seed avoidance end face and the arc-shaped raised surface, thereby avoiding the seeds from getting stuck between the seed avoidance end face and the arc-shaped raised surface, and also avoiding the seeds from getting stuck due to two or more seeds overlapping and being squeezed between the seed avoidance end face and the arc-shaped raised surface, which is beneficial to improving the reliability and stability of the seeding device in seeding and sowing. Therefore, when the seeder including the seeding wheel in this embodiment is used to sow wheat seeds, it is beneficial to improve the reliability and stability of the seeding device in seeding and sowing wheat seeds, thereby improving the appropriateness of the wheat planting density.

[0037] According to one embodiment of the present application, the seed wheel body for the seeder further includes:

[0038] A plurality of arc-shaped limiting units are provided, one corresponding to each of the plurality of arc-shaped supporting units, and the plurality of arc-shaped limiting units are respectively installed on the radially outer sides of the arc-shaped supporting units, and radially inner sides of the arc-shaped limiting units are respectively provided with seed-discharging grooves facing the seed-discharging openings close thereto, and the ports of the seed-discharging grooves facing the arc-shaped supporting units are respectively connected with the seed-discharging openings close thereto, and one end of the seed-discharging grooves facing away from the arc-shaped supporting unit radially passes through the radially outer sides of the arc-shaped limiting units;

[0039] The radial inner sides of the arc-shaped limiting units are respectively provided with second seeding slots facing the second seeding opening close thereto, and the ports of the second seeding slots facing the arc-shaped supporting units are respectively connected to the second seeding opening close thereto, and the ends of the second seeding slots facing away from the arc-shaped supporting units respectively radially pass through the radial outer sides of the arc-shaped limiting units;

[0040] The outer wall of the seed dispensing device is provided with a seed discarding groove 1, the seed discarding groove 1 is located at the radial outer side of the installation and receiving groove and is connected to the installation and receiving groove, and the seed discarding groove 1 is respectively connected to the seed outlet groove 1 and the seed outlet groove 2, and a seed drop guide protrusion is provided between the seed discarding groove 1 and the seed outlet groove 1 and the seed outlet groove 2, and the seed drop guide protrusion is arranged directly opposite the radial outer wall of the seed dispensing device, and the seed drop guide protrusion is used to guide the seeds thrown from the seed dispensing nest to move toward the seed outlet groove 1 and the seed outlet groove 2, and the minimum spacing between the end face of the seed dispensing device toward the radial outer wall of the seed dispensing device and the seed drop guide protrusion is spacing 3, the size of spacing 3 is larger than the waist diameter of a seed, and the seeds entering the spacing 3 can pass through the spacing 3 into the seed discarding groove 1 and be discharged outward from the seed discarding groove 1;

[0041] A second seed discarding slot is provided on the radial inner side of the arc-shaped limiting unit, facing the first seed discarding slot. The port of the second seed discarding slot close to the first seed discarding slot is connected to the first seed discarding slot, and the end of the second seed discarding slot away from the first seed discarding slot passes through the arc-shaped limiting unit.

[0042] The seed-taking wheel body for the seeder in this embodiment also includes an arc-shaped limiting unit, which is installed on the radially outer side of the arc-shaped supporting unit. The radially inner side of the arc-shaped limiting unit is also provided with a seed-discharging groove 2 facing the seed-discharging port 2, so that the seed-discharging groove 1 is connected with the seed-discharging groove 1 adjacent thereto to form a seed-discharging channel 1, and the seed-discharging groove 2 is connected with the seed-discharging groove 2 adjacent thereto to form a seed-discharging channel 2, and the seed-discarding groove 2 is connected with the seed-discarding groove 1 to form a seed-discarding channel, which is conducive to forming the seed-discharging channel 1, the seed-discharging channel 2 and the seed-discarding channel, thereby helping to reduce the production and manufacturing cost of the seeder.

[0043] According to another aspect of the present application, a seeder is provided, comprising:

[0044] The above-mentioned seed wheel body for the seeder;

[0045] A top-stop wheel disc is mounted on one end of the seed wheel body in the axial direction;

[0046] A pressure plate is mounted on the other end of the seed taking wheel body in the axial direction opposite to the top stop wheel disc, and a seed storage cavity for storing seeds is defined between the seed taking wheel body, the top stop wheel disc and the pressure plate. When the seed taking nest is located at the seed feeding position, the open end of the seed taking nest is communicated with the seed storage cavity, and seeds close to the seed taking nest can enter and be stored in the seed taking nest;

[0047] A seed taking drive mechanism is installed in the seed storage cavity, and the seed taking device is connected to the seed taking drive mechanism and can rotate circumferentially in the installation storage groove under the drive of the seed taking drive mechanism;

[0048] A support shaft, the support shaft horizontally and axially passing through the center of the top stop wheel disc and the pressure plate;

[0049] A rotation support assembly is fixedly mounted on the peripheral side of the support shaft, the seed wheel body, the top-stop wheel disc and the pressure plate are mounted on the outer periphery of the rotation support assembly, and the seed wheel body, the top-stop wheel disc and the pressure plate can rotate synchronously in the circumferential direction relative to the support shaft;

[0050] A plurality of hole-seeding nozzles are provided corresponding to the plurality of the first seeding ports and the plurality of the second seeding ports, and each of the hole-seeding nozzles is communicated with the first seeding port or the second seeding port respectively.

[0051] The seeder in this embodiment includes the above-mentioned seed-taking wheel body for the seeder. When the seeder in this embodiment is used to sow seeds, when the seeds enter between the seed-avoidance end face and the arc-shaped raised surface, the seeds that enter between the seed-avoidance end face and the arc-shaped raised surface can pass through the gap between the seed-avoidance end face and the arc-shaped raised surface and will not get stuck between the seed-avoidance end face and the arc-shaped raised surface, thereby avoiding the seeds from getting stuck between the seed-avoidance end face and the arc-shaped raised surface, and also avoiding two or more seeds from overlapping and being squeezed between the seed-avoidance end face and the arc-shaped raised surface, which is beneficial to improving the reliability and stability of the seeder in taking and sowing seeds. Therefore, when the seeder in this embodiment is used to sow wheat seeds, it is beneficial to improve the reliability and stability of the seeder in taking and sowing wheat seeds, thereby improving the appropriateness of the wheat planting density. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the technical solutions in the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0053] Figure 1 This is a structural schematic diagram of a seed removal assembly for a seeder according to an embodiment of the utility model;

[0054] Figure 2 This is a schematic structural diagram of an arc-shaped support unit according to an embodiment of the present utility model;

[0055] Figure 3 for Figure 2 Schematic diagram of the back structure of the arc-shaped support unit;

[0056] Figure 4 This is a schematic structural diagram of an arc-shaped limiting unit according to an embodiment of the present utility model;

[0057] Figure 5 for Figure 4 Schematic diagram of the back structure of the arc-shaped limiting unit;

[0058] Figure 6 This is a schematic diagram of the back structure of the seed remover according to an embodiment of the utility model installed in the installation storage groove of the arc-shaped support unit;

[0059] Figure 7 This is a structural schematic diagram of a seed wheel body for a seeder according to an embodiment of the utility model;

[0060] Figure 8 A schematic diagram of the minimum distance between the seed avoidance end surface and the arc-shaped convex surface of an embodiment of the present utility model;

[0061] Figure 9 This is a schematic structural diagram of an elastic seed cleaning member according to an embodiment of the present utility model;

[0062] Figure 10 This is a structural diagram of a seeder according to an embodiment of the present invention;

[0063] Figure 11 for Figure 10 The schematic diagram of the structure after removing the lateral fixed wheel and multiple hole-seeking nozzles;

[0064] Figure 12 This is a structural schematic diagram of an embodiment of the utility model in which a swing drive rail is installed on a drive support plate. DETAILED DESCRIPTION

[0065] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0066] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0067] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0068] In one aspect of the present application, a seed taking assembly for a seeder is provided, such as Figures 1 to 9 Shown, including:

[0069] The arc-shaped support unit 1 has an installation receiving groove 10 on the radial inner side of the arc-shaped support unit 1, and the installation receiving groove 10 is open at one end toward the radial inner side of the arc-shaped support unit 1; the arc-shaped support unit 1 is also provided with a seeding groove, which is located on one side of the installation receiving groove 10 in the circumferential direction and is connected to the installation receiving groove 10, and the end of the seeding groove facing away from the installation receiving groove 10 passes through the radial outer side of the arc-shaped support unit 1 to form a seeding opening;

[0070] The seed taker 2 is rotatably mounted in the mounting and receiving groove 10, with the rotation center axis of the seed taker 2 facing the axial direction of the arc-shaped support unit 1. A seed taking nest 20 is provided on the seed taker 2. The seed taker 2 can rotate circumferentially in the mounting and receiving groove 10 under the drive of the rotation drive mechanism and make the seed taking nest 20 have a seed entry position and a seed dropping position. When the seed taking nest 20 is in the seed entry position, the open end of the seed taking nest 20 faces the radial inner side of the arc-shaped support unit 1 and the seeds close to the seed taking nest 20 can enter and be stored in the seed taking nest 20; when the seed taking nest 20 is in the seed dropping position, the open end of the seed taking nest 20 faces the seed discharging slot and the seeds stored in the seed taking nest 20 can be dropped into the seed discharging slot;

[0071] The seed taker 2 is provided with a peripheral outer wall of the seed taking nest 20 to form an arc-shaped convex surface, and the arc-shaped support unit 1 is provided with a seed-blocking protrusion 19 facing the arc-shaped convex surface. The seed-blocking protrusion 19 is arranged on one side of the installation and receiving groove 10 and is arranged close to the open end of the installation and receiving groove 10. The seed-blocking protrusion 19 protrudes toward the arc-shaped convex surface and extends into the installation and receiving groove 10. The end face of the seed-blocking protrusion 19 facing the arc-shaped convex surface forms a seed avoidance end face 191. The minimum distance between the seed avoidance end face 191 and the arc-shaped convex surface is spacing one, and spacing one is greater than the waist diameter of one seed. The maximum distance between the seed avoidance end face 191 and the arc-shaped convex surface is spacing two, and spacing two is less than the sum of the waist diameters of two seeds.

[0072] The elastic seed clearing member 4 is installed on one side of the installation receiving groove 10 facing the arc-shaped raised surface, and is located radially inside the seed blocking protrusion 19 . The elastic seed clearing member 4 extends close to the arc-shaped raised surface to form an elastic seed clearing portion 41 .

[0073] In this embodiment, if Figures 1 to 9As shown, the seed taker 2 in this embodiment is provided with a peripheral outer wall of the seed taking nest 20 to form an arc-shaped convex surface, and the arc-shaped support unit 1 is provided with a seed-blocking protrusion 19 facing the arc-shaped convex surface, and the end face of the seed-blocking protrusion 19 facing the arc-shaped convex surface forms a seed-avoiding end face 191, and the minimum distance between the seed-avoiding end face 191 and the arc-shaped convex surface is greater than the waist diameter of a seed, and the maximum distance between the seed-avoiding end face 191 and the arc-shaped convex surface is less than the sum of the waist diameters of two seeds. When the seed taker 2 is turned from the seed taking position to the seeding position, even if the seeds stored in the seed taking nest 20 are The seeds move outward from the edge of the seed-taking nest 20 and enter between the seed-taking avoidance end face 191 and the arc-shaped raised surface. The seeds that enter between the seed-taking avoidance end face 191 and the arc-shaped raised surface can pass through the gap between the seed-taking avoidance end face 191 and the arc-shaped raised surface and will not get stuck between the seed-taking avoidance end face 191 and the arc-shaped raised surface, thereby avoiding the seeds from getting stuck between the seed-taking avoidance end face 191 and the arc-shaped raised surface, and also avoiding two or more seeds from overlapping and being squeezed between the seed-taking avoidance end face 191 and the arc-shaped raised surface, which is beneficial to improving the reliability and stability of the seeding device in taking and sowing seeds. Therefore, when using a seeding device including the seed-taking assembly in this embodiment to sow wheat seeds, it is beneficial to improve the reliability and stability of the seeding device in taking and sowing wheat seeds, thereby improving the appropriateness of the wheat planting density. Furthermore, by installing an elastic seed cleaning piece 4 on the radial inner side of the seed blocking protrusion 19, it is convenient to block and clear the seeds that have not fallen into the seed taking nest 20 during the seed taking process of the seed taking nest 20 through the elastic seed cleaning piece 4, so that only the seeds that fall into the seed taking nest 20 are deflected from the seed taking position to the seed throwing position and thrown.

[0074] In this embodiment, Figure 8 Schematic diagram of the minimum distance between the seed avoidance end surface 191 and the arc-shaped convex surface, Figure 8 Specifically, it is a right view that is cut along a vertical plane passing through the middle of the seed removal nest 20 located on the right side in the left-right direction and enlarged to show the minimum distance between the seed avoidance end face 191 and the arc-shaped convex surface.

[0075] In this embodiment, if Figure 1 、 Figure 2 and Figure 9As shown, the left side of the installation receiving groove 10 in this embodiment is provided with an installation groove body 107, and the installation groove body 107 is communicated with the installation receiving groove 10, and the left side of the installation receiving groove 10 is further provided with a screw hole 1071, and the screw hole 1071 is located in the installation groove body 107 and is communicated with the installation groove body 107; the elastic seed cleaning member 4 is installed in the installation groove body 107, and the elastic seed cleaning member 4 includes a support body 40 and an elastic seed cleaning portion 41, and the elastic seed cleaning portion 41 is connected to the support body 40, and the elastic seed cleaning portion 41 is arranged opposite to the arc-shaped convex surface of the seed taker 2; further, the elastic seed cleaning member 4 in this embodiment is fixed by the limiting pressing piece 5, and the elastic seed cleaning member 4 corresponds to the installation The screw hole 1071 provided on the left side of the receiving groove 10 is provided with an avoidance through-hole 401, and the limiting pressure piece 5 and the elastic seed-clearing piece 4 are fixed by the fixing screw 50. The fixing screw 50 passes through the avoidance through-hole 401 provided on the elastic seed-clearing piece 4 and passes through the elastic seed-clearing piece 4. The limiting pressure piece 5 is provided with a recessed groove at a position opposite to the elastic seed-clearing portion 41, and the elastic seed-clearing portion 41 protrudes the limiting pressure piece 5 toward the seed remover 2. When the elastic seed-clearing portion 41 of the elastic seed-clearing piece 4 contacts the seeds, the elastic seed-clearing portion 41 can produce elastic deformation, which is conducive to blocking and cleaning the seeds that have not entered and are stored in the seed-taking nest 20 during the seed-taking process of the seed remover 2.

[0076] In this embodiment, if Figure 2 and Figure 3 As shown, the arcuate support unit 1 in this embodiment is approximately in the shape of a fan ring, with the radially inner sidewall of the arcuate support unit 1 being in the shape of a circular arc, and the radially outer sidewall of the arcuate support unit 1 being in the shape of a circular arc. Furthermore, the arcuate support unit 1 in this embodiment can also be configured into other arcuate structures as needed. Furthermore, the arcuate convex surface formed on the outer side wall of the seed removal nest 20 on the seed removal device 2 in this embodiment is specifically in the shape of a circular arc, and the arcuate convex surface can also be configured to be approximately in the shape of a circular arc.

[0077] One embodiment of the present application, such as Figure 8 As shown, the dimension of spacing one is a, and the range of a is 4.3mm <a<6.5mm。

[0078] In this embodiment, if Figure 8As shown, the spacing one in this embodiment is greater than 4.3mm, and the spacing one is greater than the waist diameter of a seed. When the seed enters the spacing one between the seed avoidance end face 191 and the arc-shaped convex surface, the seed entering the spacing one can pass through the spacing one, thereby avoiding the seed getting stuck between the seed avoidance end face 191 and the arc-shaped convex surface; further, the spacing one in this embodiment is less than 6.5mm, and when the elastic seed-clearing portion 41 is squeezed with the seed, the elastic seed-clearing portion 41 moves toward the seed-blocking convex 19 One side of the elastic seed-clearing portion 41 produces elastic deformation, and when the elastic seed-clearing portion 41 that produces elastic deformation is squeezed with the seed-blocking protrusion 19, the seed-blocking protrusion 19 can constrain the degree of deformation of the elastic seed-clearing portion 41, thereby reducing or avoiding the seeds from the seed-clearing portion 2 and the elastic seed-clearing portion 41 from squeezing into between the seed-avoiding end face 191 and the arc-shaped protruding surface during the process of the seed-taking device 2 deflecting from the seed-taking position to the seed-throwing position, which is beneficial to improving the seed-blocking protrusion 19 assisting the elastic seed-clearing member 4 in blocking the seeds.

[0079] One embodiment of the present application, such as Figures 1 to 3 and Figure 6 As shown, the seeding slot includes a seeding slot 101 and a seeding slot 2 102, and the seeding slot 101 and the seeding slot 2 102 are located on one side of the installation and receiving slot 10 in the circumferential direction and are respectively connected to the installation and receiving slot 10, and a seed separating rib 103 is provided between the seeding slot 101 and the seeding slot 2 102 facing the end of the installation and receiving slot 10, and the seed separating rib 103 is connected to the arc-shaped support unit 1 and extends close to the arc-shaped convex surface to form a seed separating end, and the seed separating end is arranged opposite to the seed taker 2, and the seed separating end is provided with an arc-shaped avoidance recessed groove 1031 opposite to the arc-shaped convex surface;

[0080] The seeding openings include a seeding opening 1 and a seeding opening 2. The ends of the seeding slot 101 and the seeding slot 2 102 facing away from the installation receiving slot 10 respectively pass through the radial outer side of the arc-shaped support unit 1 to form the seeding opening 1 and the seeding opening 2;

[0081] There are multiple seed taking nests 20 , which are spaced apart along the axial direction of the seed taking device 2 , and the seed separating ribs 103 are located in the middle of the multiple seed taking nests 20 .

[0082] In this embodiment, if Figures 1 to 3 and Figure 6As shown, the seeding groove in this embodiment includes seeding groove 101 and seeding groove 2 102, and the seeding port includes seeding port 1 and seeding port 2. The multiple arc-shaped support units 1 in this embodiment are connected end to end in a circumferential direction to form a support wheel body; it is convenient to respectively install a hole sowing nozzle 9 on the outside of the seeding port 1 and the seeding port 2, and the timing of sowing is controlled by controlling the opening timing of the hole sowing nozzle 9, so as to realize the delivery of seeds to two seed delivery ports through one seed remover 2, which is beneficial to reduce the number of wheel assembly units used to assemble the support wheel body with the same diameter and reduce the workload of assembling the support wheel body, and also beneficial to reduce the number of seed removers 2 that need to be set to further reduce the production cost of the hole sowing seeder. Furthermore, the present embodiment provides a plurality of seed taking nests 20, through which seeds can be taken, and the number of seeds required for the two sowing points can be obtained together through the plurality of seed taking nests 20, thereby reducing the volume of the seed taking nests 20 and reducing the number of seeds stored in each seed taking nest 20, thereby reducing the difference in the number of seeds obtained by different seed taking nests 20 due to the different postures and extrusion methods of the multiple seeds in the seed taking nests 20. In particular, when obtaining a seed through a seed taking nest 20, after the seeds are put into the plurality of seed taking nests 20, the put seeds are separated and isolated into the seed discharge groove 1 101 and the seed discharge groove 2 102 through the seed separation rib 103, which is conducive to improving the consistency of the number of seeds put into the seed discharge groove 1 101 and the seed discharge groove 2 102 by the seed taker 2, thereby improving the consistency of the number of seeds put into the two seed discharge ports by one seed taker 2.

[0083] In this embodiment, if Figure 2 、 Figure 3 and Figure 6 As shown, the installation receiving groove 10 in this embodiment is opened in the middle of the arc-shaped support unit 1, and the installation receiving groove 10 is open at one end radially inward of the arc-shaped support unit 1. In addition, the installation receiving groove 10 in this embodiment is radially open at one end radially outward of the arc-shaped support unit 1 to form a discarded through groove.

[0084] In this embodiment, if Figure 2 and Figure 3As shown, the seeding slot 1 101 and the seeding slot 2 102 in this embodiment are located on the left side of the installation receiving slot 10 , and the seeding slot 1 101 and the seeding slot 2 102 pass through the arc support unit 1 to the left side toward one end radially outward of the arc support unit 1 . Furthermore, the arc-shaped support unit 1 in this embodiment is provided with an axial hole 106, which axially passes through the arc-shaped support unit 1 and is connected to the installation and receiving groove 10, and a rotating shaft 21 is rotatably installed in the axial hole 106; in addition, the seed remover 2 in this embodiment is provided with an axial installation limit groove, the seed remover 2 is placed in the installation and receiving groove 10 and the axial installation limit groove on the seed remover 2 is aligned with the axial hole 106, the rotating shaft 21 is passed through the axial hole 106 and the axial installation limit groove, so that the seed remover 2 is installed and limited in the installation and receiving groove 10, and when the seed removal nest 20 on the seed removal nest 2 is in the seeding position, the open end of the seed removal nest 20 faces the seeding groove 101 and the seeding groove 2 102.

[0085] Further, such as Figure 2 and Figure 3 As shown, the seeding slot 2 102 also includes a seeding slot 2 extension portion 104 located on the right side of the installation receiving slot 10 . After multiple arc-shaped support units 1 are assembled to form an annular wheel body, the seeding slot 2 102 on two adjacent arc-shaped support units 1 are connected to the seeding slot 2 extension portion 104 .

[0086] In this embodiment, if Figure 1 and Figure 6 As shown, the rear end of the rotating shaft 21 passing through the arc-shaped support unit 1 is connected to a swing arm 22, and the swing arm 22 is connected to the rotating shaft 21 and extends perpendicular to the rotating shaft 21; the end of the swing arm 22 away from the rotating shaft 21 is connected to a swing contact protrusion 221, and the swing contact protrusion 221 is used to contact the corrugated seed-taking swing drive rail 712, so as to facilitate driving the rotating shaft 21 to rotate and drive the seed taker 2 to rotate in the installation storage groove 10.

[0087] Further, such as Figure 1 、 Figure 2 and Figure 6As shown, in this embodiment, in order to facilitate the driving of the seed remover 2 to rotate so that the seed removal nest 20 can switch between the seed feeding position and the seed dropping position, a torsion spring installation slot 105 is provided at the rear part of the installation and storage slot 10, and the torsion spring installation slot 105 is connected to the installation and storage slot 10, and a torsion spring is installed in the torsion spring installation slot 105; specifically, the torsion spring includes a torsion body, connecting arm one and connecting arm two, and connecting arm one and connecting arm two are respectively connected to the two ends of the torsion body; a clamping limit slot for clamping connecting arm one is provided at the rear end of the seed remover 2, and connecting arm one is clamped into and confined in the clamping limit slot; further, a stop slot 108 is provided on the arc-shaped support unit 1, and the stop slot 108 is connected to the installation and storage slot 10, and connecting arm two is inserted in the stop slot 108; in addition, the torsion body is sleeved on the outer periphery of the rotating shaft 21. When the swing contact protrusion 221 contacts the seed-taking swing drive rail 712, the multiple arc-shaped protrusions on the seed-taking swing drive rail 712 intermittently deflect the swing arm 22, thereby driving the seed taker 2 to rotate, so that the open end of the seed taking nest 20 faces the radial inner side of the arc-shaped support unit 1, which is conducive to the seeds entering the seed taking nest 20; at the same time, in the process of the swing arm 22 driving the seed taker 2 to rotate, the torsion spring is subjected to torsion and twisted. When the swing contact protrusion 221 is released from contact with the seed-taking swing drive rail 712, the driving force applied by the swing arm 22 disappears, the torsion spring restores the torsion deformation and drives the seed taker 2 to rotate, so that the open end of the seed taking nest 20 faces the seeding slot 1 101 and the seeding slot 2 102, so that the seeds stored in the seed taking nest 20 can be dropped into the seeding slot 1 101 and the seeding slot 2 102. It should be noted that the specific structure of the torsion spring can be various and any torsion spring suitable in the prior art can be used. The torsion spring is not shown in the figure in this embodiment.

[0088] One embodiment of the present application, such as Figure 1 and Figure 9 As shown, the elastic seed cleaning portion 41 is provided with a plurality of seed avoidance openings 411 facing the plurality of seed taking holes 20 one by one.

[0089] In this embodiment, if Figure 1 and Figure 9 As shown, in this embodiment, a plurality of seed avoidance openings 411 are provided on the elastic seed-clearing portion 41, one by one facing the plurality of seed-taking nests 20. In the process of the seed-taking device 2 being deflected from the seed-taking position to the seed-dropping position, when a small portion of the seeds stored in the seed-taking nest 20 protrudes from the seed-taking nest 20, the portion of the seeds protruding to the outside of the seed-taking nest 20 can pass through the seed avoidance openings 411, thereby allowing the seeds stored in the seed-taking nest 20 but with a small portion protruding from the seed-taking nest 20 to pass through, thereby increasing the seed-taking rate of the seed-taking nest 20, especially when each seed-taking nest 20 can accommodate multiple seeds.

[0090] In this embodiment, if Figure 9As shown, the elastic seed-clearing member 4 includes a supporting body 40 and an elastic seed-clearing portion 41, and the elastic seed-clearing portion 41 is connected to the supporting body 40; the seed remover 2 in this embodiment is provided with two seed-taking nests 20, and the elastic seed-clearing portion 41 is provided with two seed-avoidance openings 411, one facing the two seed-taking nests 20; in addition, the seed-taking nests 20 in this embodiment can be provided with two, three, four, etc. as needed.

[0091] One embodiment of the present application, such as Figure 1 and Figure 6 As shown, there are two seed taking nests 20 , which are spaced apart along the axial direction of the seed taking device 2 , and the seed separating rib 103 is located in the middle of the two seed taking nests 20 .

[0092] In this embodiment, if Figure 1 and Figure 6 As shown, there are two seed taking nests 20 in this embodiment, and seeds are taken through the two seed taking nests 20. The number of seeds required for the two sowing points is obtained together through the two seed taking nests 20. The seed separating rib 103 is located in the middle of the two seed taking nests 20, so that one seed taking nest 20 can bear the number of seeds required for one seed delivery opening, which is beneficial to reduce the number of seed taking nests 20, simplify the structure of the seed taker 2 and reduce the production cost of the seed taker 2.

[0093] One embodiment of the present application, such as Figure 1 、 Figure 4 and Figure 5 As shown, the seed taking assembly for the seeder also includes:

[0094] The arc-shaped limiting unit 3 is installed on the radial outer side of the arc-shaped support unit 1. The radial inner side of the arc-shaped limiting unit 3 is directly opposite to the seeding port 1 and is provided with a seeding slot 31. The seeding slot 31 is connected to the seeding port 1 toward the end of the arc-shaped support unit 1. The seeding slot 31 radially passes through the radial outer side of the arc-shaped limiting unit 3 at one end away from the arc-shaped support unit 1.

[0095] The radial inner side of the arc-shaped limiting unit 3 is also provided with a second seeding slot 32 opposite to the second seeding port. The second seeding slot 32 is connected to the second seeding port toward the end of the arc-shaped supporting unit 1, and the second seeding slot 32 radially passes through the radial outer side of the arc-shaped limiting unit 3 at one end away from the arc-shaped supporting unit 1.

[0096] In this embodiment, if Figure 1 、 Figure 4 and Figure 5As shown, the seed removal assembly for the seeder in this embodiment also includes an arc-shaped limiting unit 3, which is installed on the radially outer side of the arc-shaped support unit 1, and the radially inner side of the arc-shaped limiting unit 3 is also provided with a seed outlet groove 2 32 directly opposite the seed feeding port 2, so that the seed outlet groove 1 31 is connected with the seed discharge groove 1 101 adjacent thereto to form a seed discharge channel 1, and the seed discharge groove 2 32 is connected with the seed discharge groove 2 102 adjacent thereto to form a seed discharge channel 2, which is beneficial to the formation of seed discharge channel 1 and seed discharge channel 2, thereby helping to reduce the production and manufacturing cost of the seeder.

[0097] In this embodiment, if Figure 4 and Figure 5 As shown, the arc-shaped limiting unit 3 in this embodiment is approximately in the shape of a fan ring, the radial inner wall of the arc-shaped limiting unit 3 is in the shape of a circular arc, and the radial outer wall of the arc-shaped limiting unit 3 is in the shape of a circular arc. After the arc-shaped limiting unit 3 is installed on the radial outer side of the arc-shaped support unit 1, the radial outer wall of the arc-shaped support unit 1 fits within the radial inner wall of the arc-shaped limiting unit 3; in addition, the arc-shaped limiting unit 3 in this embodiment can also be set to other arc-shaped structures as needed.

[0098] Furthermore, the structures of the seed-ejecting groove 1 31 and the seed-ejecting groove 2 32 in this embodiment can be various, so that the seed-ejecting groove 1 31 and the seed-ejecting groove 2 32 can pass through the seeds; the processing and forming methods of the seed-ejecting groove 1 31 and the seed-ejecting groove 2 32 can also be various, which will not be repeated here.

[0099] One embodiment of the present application, such as Figures 1 to 6 As shown, a seed discarding groove 1 is provided on the radial outer side of the arc-shaped support unit 1, and the seed discarding groove 1 is located on the radial outer side of the installation and receiving groove 10 and is communicated with the installation and receiving groove 10, and the seed discarding groove 1 is respectively communicated with the seed outlet groove 1 31 and the seed outlet groove 2 32, and a seed drop guide protrusion is provided between the seed discarding groove 1 and the seed outlet groove 1 31 and the seed outlet groove 2 32, and the seed drop guide protrusion is arranged opposite to the radial outer side wall of the seed taker 2, and the seed drop guide protrusion is used to guide the seeds cast from the seed taking nest 20 to move toward the seed outlet groove 1 31 and the seed outlet groove 2 32, and the minimum spacing between the seed drop guide protrusion facing the end face of the seed taker 2 and the radial outer side wall of the seed taker 2 is spacing three, and the size of spacing three is larger than the waist diameter of a seed, and the seeds entering spacing three can enter the seed discarding groove 1 through spacing three and be discharged outward from the seed discarding groove 1;

[0100] A second seed discarding slot 33 is provided on the radial inner side of the arc-shaped limiting unit 3, facing the first seed discarding slot. The end of the second seed discarding slot 33 close to the first seed discarding slot is connected to the first seed discarding slot, and the end of the second seed discarding slot 33 away from the first seed discarding slot passes through the arc-shaped limiting unit 3.

[0101] In this embodiment, if Figures 1 to 6As shown, a seed falling guide protrusion is provided between the seed discarding groove one and the seed outlet groove one 31 and the seed outlet groove two 32 in this embodiment, so that the seeds thrown from the seed taking nest 20 are guided to move toward the seed outlet groove one 31 and the seed outlet groove two 32 through the seed falling guide protrusion, so that the seeds thrown from the seed taking nest 20 move toward the seed outlet groove one 31 and the seed outlet groove two 32; further, the minimum spacing between the end face of the seed falling guide protrusion facing the seed taker 2 and the radial outer side wall of the seed taker 2 is spacing three, and the size of spacing three is larger than the waist diameter of a seed. When a seed enters spacing three, the seed entering spacing three can enter the seed discarding groove one through spacing three and be discharged outward from the seed discarding groove one, thereby avoiding the accumulation of seeds in spacing three and causing seed jamming, which is beneficial to improving the reliability and stability of the seed seeder in taking and sowing seeds.

[0102] In this embodiment, if Figure 6 and Figure 8 As shown, the radial outer side of the seed taker 2 in this embodiment is provided with an avoidance plane 23. When the seed taker 2 is in the seeding position, that is, Figure 8 The seed remover 2 shown is deflected to the lower left side, so that when the seed removal nest 20 on the seed remover 2 is deflected to the seeding position, the seed removal nest 20 on the seed remover 2 is opposite to the seed outlet slot 1 31 and the seed outlet slot 2 32; at this time, the avoidance plane 23 provided on the seed remover 2 is opposite to the seed falling guide protrusion, and the avoidance plane 23 is closest to the seed falling guide protrusion, and the distance between the seed falling guide protrusion facing the end face of the seed remover 2 and the avoidance plane 23 of the seed remover 2 is the minimum distance; and the seed remover 2 is deflected in the opposite direction, and the distance between the avoidance plane 23 of the seed remover 2 and the seed falling guide protrusion increases; during the rotation of the seed remover 2, the distance of the distance three changes.

[0103] It should be noted that if Figure 6 and Figure 8 As shown, the arc-shaped limiting unit 3 in this embodiment is installed on the radial outside of the arc-shaped support unit 1. In order to avoid interference between the seed remover 2 and the arc-shaped limiting unit 3, the radial outside of the seed remover 2 is designed to be a recessed structure. Thus, there is a gap between the radial outside of the seed remover 2 and the arc-shaped limiting unit 3. In the absence of a seed discarding groove 2 33, due to the complex rolling working conditions of the seeder, seeds may easily enter the gap between the radial outside of the seed remover 2 and the arc-shaped limiting unit 3, causing seed jamming.

[0104] Furthermore, the structures of the discarded seed groove one and the discarded seed groove two 33 in this embodiment can be various, so that the discarded seed groove one and the discarded seed groove two 33 can pass through the seeds; the processing and forming methods of the discarded seed groove one and the discarded seed groove two 33 can also be various, which will not be repeated here.

[0105] One embodiment of the present application, such as Figure 1and Figure 4 As shown, one end of the second discarded seed through slot 33 away from the first discarded seed through slot axially passes through the arc-shaped limiting unit 3 .

[0106] In this embodiment, if Figure 1 and Figure 4 As shown, the second abandoned seed groove 33 in this embodiment axially passes through the arc-shaped limiting unit 3 at one end away from the first abandoned seed groove, which is convenient for abandoning seeds from the lateral direction of the seeder, and discharges the seeds discharged from the second abandoned seed groove 33 outside the sowing row area, avoiding the seeds discharged from the second abandoned seed groove 33 affecting the appropriateness of the planting density in the sowing row area, especially for the sowing of wheat seeds.

[0107] In another aspect of the present application, a seed wheel body for a seeder is provided, such as Figure 7 Shown, including:

[0108] The above-mentioned seed taking assembly for the seeder is provided with a plurality of seed taking assemblies, and the plurality of seed taking assemblies are connected end to end in a circumferential direction to form a circular supporting wheel body.

[0109] In this embodiment, if Figure 7 As shown, the seed removal wheel body for the seeder in this embodiment includes the above-mentioned seed removal components, and multiple seed removal components are circumferentially connected end to end to form a circular supporting wheel body. When the seeder including the seed removal wheel body in this embodiment is used to sow seeds, when the seeds enter between the seed avoidance end face 191 and the arc-shaped convex surface, the seeds entering between the seed avoidance end face 191 and the arc-shaped convex surface can pass through the gap between the seed avoidance end face 191 and the arc-shaped convex surface and will not be stuck between the seed avoidance end face 191 and the arc-shaped convex surface, thereby avoiding the seeds from being stuck between the seed avoidance end face 191 and the arc-shaped convex surface, and also avoiding two or more seeds from overlapping and being squeezed between the seed avoidance end face 191 and the arc-shaped convex surface to cause the seeds to be stuck, which is beneficial to improving the reliability and stability of the seeder in seed removal and sowing. Therefore, when using a seeder including the seed wheel body in this embodiment to sow wheat seeds, it is beneficial to improve the reliability and stability of the seeder in taking and sowing wheat seeds, thereby improving the appropriateness of the wheat planting density.

[0110] In this embodiment, if Figure 7 As shown, in this embodiment, in order to facilitate the circumferential connection of multiple seed-taking components including arc-shaped support units 1 end to end to form a circular ring-shaped support wheel body, an assembly avoidance groove 12 is provided on the right side of the arc-shaped support unit 1, and an assembly limiting protrusion 13 is provided on the left side of the arc-shaped support unit 1 corresponding to the assembly avoidance groove 12. When multiple arc-shaped support units 1 are connected end to end in the circumferential direction, the assembly limiting protrusion 13 extends into and is received in the assembly avoidance groove 12.

[0111] One embodiment of the present application, such as Figure 1 and Figure 7 As shown, the seed wheel body for the seeder also includes:

[0112] The arc-shaped limiting units 3 are provided in a one-to-one correspondence with the multiple arc-shaped supporting units 1. The multiple arc-shaped limiting units 3 are respectively installed on the radially outer sides of the arc-shaped supporting units 1. The radial inner sides of the arc-shaped limiting units 3 are respectively provided with seeding slots 31 facing the seeding ports close thereto. The seeding slots 31 are respectively connected to the seeding ports close thereto toward the ports of the arc-shaped supporting units 1. The ends of the seeding slots 31 facing away from the arc-shaped supporting units 1 radially pass through the radially outer sides of the arc-shaped limiting units 3.

[0113] The radial inner side of the arc-shaped limiting unit 3 is also provided with a second seeding slot 32 facing the second seeding port close thereto. The second seeding slot 32 is connected to the second seeding port close thereto toward the end of the arc-shaped supporting unit 1. The end of the second seeding slot 32 facing away from the arc-shaped supporting unit 1 radially passes through the radial outer side of the arc-shaped limiting unit 3.

[0114] A seed discarding groove 1 is provided on the radial outer side of the arc-shaped support unit 1. The seed discarding groove 1 is located on the radial outer side of the installation and receiving groove 10 and is communicated with the installation and receiving groove 10, and the seed discarding groove 1 is respectively communicated with the seed outlet groove 1 31 and the seed outlet groove 2 32. A seed drop guide protrusion is provided between the seed discarding groove 1 and the seed outlet groove 1 31 and the seed outlet groove 2 32. The seed drop guide protrusion is arranged opposite to the radial outer side wall of the seed taker 2. The seed drop guide protrusion is used to guide the seeds thrown from the seed taking nest 20 to move toward the seed outlet groove 1 31 and the seed outlet groove 2 32, and the minimum distance between the seed drop guide protrusion facing the end face of the seed taker 2 and the radial outer side wall of the seed taker 2 is spacing three. The size of spacing three is larger than the waist diameter of a seed. The seeds entering spacing three can enter the seed discarding groove 1 through spacing three and be discharged outward from the seed discarding groove 1;

[0115] A second seed discarding slot 33 is provided on the radial inner side of the arc-shaped limiting unit 3, facing the first seed discarding slot. The end of the second seed discarding slot 33 close to the first seed discarding slot is connected to the first seed discarding slot, and the end of the second seed discarding slot 33 away from the first seed discarding slot passes through the arc-shaped limiting unit 3.

[0116] In this embodiment, if Figure 7As shown, the seed wheel body for the seeder in this embodiment also includes an arc-shaped limiting unit 3, which is installed on the radial outer side of the arc-shaped support unit 1, and the radial inner side of the arc-shaped limiting unit 3 is also provided with a seed outlet groove 2 32 opposite the seed feeding port 2, so that the seed outlet groove 1 31 is connected with the seed discharge groove 1 101 close thereto to form a seed discharge channel 1, and the seed discharge groove 2 32 is connected with the seed discharge groove 2 102 close thereto to form a seed discharge channel 2, and the seed discarding groove 2 33 is connected with the seed discarding groove 1 near the end thereof to form a seed discarding channel, which is beneficial to form the seed discharge channel 1, the seed discharge channel 2 and the seed discarding channel, thereby reducing the production and manufacturing cost of the seeder.

[0117] In this embodiment, if Figures 1 to 5 As shown, in this embodiment, in order to facilitate the installation of the arc limiting unit 3 on the radial outer side of the arc supporting unit 1, a mounting protrusion 11 is provided on the radial outer wall of the arc supporting unit 1, and a mounting groove 30 is provided on the radial inner wall of the arc limiting unit 3 corresponding to the mounting protrusion 11; further, the mounting groove 30 in this embodiment is approximately a rectangular trough structure, and the left and right sides of the mounting groove 30 are provided with a concave inclined edge that is concave inward, and the concave inclined edge of the mounting groove 30 corresponding to the left and right sides of the mounting protrusion 11 is provided with a convex inclined edge that is widened outward, and the arc limiting unit 3 is inserted into the mounting groove 30 from the front side port of the mounting groove 30, and the convex inclined edge is stuck in the concave inclined edge, so that the mounting protrusion 11 is fixed in the mounting groove 30 in the radial direction, thereby realizing the installation and limitation of the arc limiting unit 3 on the radial outer side of the arc supporting unit 1.

[0118] In this embodiment, if Figures 1 to 5 and Figure 7 As shown, in this embodiment, in order to fix the arc-shaped limiting unit 3 and the arc-shaped supporting unit 1, a bolt through hole 17 and a bolt through hole 2 18 are provided on the arc-shaped supporting unit 1, and a bolt through hole 3 34 and a bolt through hole 4 35 are provided on the arc-shaped limiting unit 3 corresponding to the bolt through hole 17 and the bolt through hole 2 18, and are fixed by a bolt 1 6 and a nut 1 60.

[0119] In this embodiment, if Figure 2 and Figure 3 As shown, the front end of the arc support unit 1 in this embodiment is provided with an axial limit groove 14, and the front end of the arc support unit 1 is provided with an axial limit cam 15, which protrudes toward the radial inner side of the arc support unit 1, and the front part of the axial limit cam 15 is provided with an axial limit groove 2 151, which is limited in the axial direction by the axial limit groove 14 and the axial limit groove 2 151; further, the rear end of the axial limit cam 15 is connected with a swing limit cam 152, which is convenient for limiting the swing range of the swing arm 22 by the swing limit cam 152.

[0120] Further, such as Figure 1 、 Figure 2 、 Figure 3 and Figure 7 As shown, the rear end of the arc-shaped support unit 1 in this embodiment is connected to an axially extending protruding rail 16. A swing avoidance groove 163 is provided in the middle of the axially extending protruding rail 16 to prevent interference between the axially extending protruding rail 16 and the swing arm 22. Furthermore, the rear end of the axially extending protruding rail 16 is provided with an axial limiting groove 161, which is used to limit the position in the axial direction. In addition, the mounting protrusion 11 extends toward the axially extending protruding rail 16. The axially extending protruding rail 16 is also provided with a six-bolt through-hole 162. The six-bolt through-hole 162 passes through the mounting protrusion 11. The arc-shaped limiting unit 3 is provided with a three-bolt through-hole corresponding to the six-bolt through-hole 162, so that the arc-shaped limiting unit 3 and the arc-shaped support unit 1 can be locked and connected as one via a bolt 16 and a nut 160.

[0121] In this embodiment, if Figure 1 and Figure 7 As shown, in order to make the axial gap formed on the seed wheel body formed by assembling multiple arc-shaped support units 1 and multiple arc-shaped limiting units 3 present a staggered distribution, so as to improve the compactness and stability of the installation of the arc-shaped support units 1 and the arc-shaped limiting units 3, in this embodiment, the installation groove 30 on the arc-shaped limiting unit 3 is opened close to the right end of the arc-shaped limiting unit 3, and the installation protrusion 11 on the arc-shaped support unit 1 is arranged close to the left end of the arc-shaped support unit 1, so that the axial gap formed between the two arc-shaped limiting units 3 is located in the middle position of the arc-shaped support unit 1.

[0122] It should be noted that, in this embodiment, the arc-shaped support unit 1 and the arc-shaped limit unit 3 located at the lower left side are described as examples, and during the rolling of the seed wheel, the relative positions of the arc-shaped support unit 1 and the arc-shaped limit unit 3 will change accordingly. Therefore, for the arc-shaped support unit 1 and the arc-shaped limit unit 3 at other positions, the arc-shaped support unit 1 and the arc-shaped limit unit 3 illustrated in this embodiment can be referred to for corresponding description. In essence, the arc-shaped support unit 1 and the arc-shaped limit unit 3 located at different positions only differ in position.

[0123] In another aspect of the present application, a seed drill is provided, such as Figures 10 to 12 Shown, including:

[0124] The above-mentioned seed wheel body for the seeder;

[0125] The top-stop wheel disc 72 is mounted on one end of the seed wheel body in the axial direction;

[0126] The pressure plate 73 is mounted on the other end of the seed taking wheel body in the axial direction opposite to the top stop wheel disc 72. A seed storage cavity for storing seeds is defined between the seed taking wheel body, the top stop wheel disc 72 and the pressure plate 73. When the seed taking nest 20 is in the seed feeding position, the open end of the seed taking nest 20 is connected to the seed storage cavity and the seeds close to the seed taking nest 20 can enter and be stored in the seed taking nest 20.

[0127] The seed taking drive mechanism is installed in the seed storage cavity. The seed taking device 2 is connected to the seed taking drive mechanism and can rotate circumferentially in the installation storage groove 10 under the drive of the seed taking drive mechanism.

[0128] Support shaft 7, support shaft 7 horizontally axially passes through the center of the top stop wheel 72 and the pressure plate 73;

[0129] The rotating support assembly is fixedly mounted on the peripheral side of the support shaft 7, and the seed wheel body, the top stop wheel disc 72 and the pressure plate 73 are mounted on the outer periphery of the rotating support assembly. The seed wheel body, the top stop wheel disc 72 and the pressure plate 73 can rotate synchronously in the circumferential direction relative to the support shaft 7;

[0130] A plurality of acupuncture nozzles 9 are provided, one-to-one corresponding to the plurality of seeding ports 1 and the plurality of seeding ports 2, and each acupuncture nozzle 9 is communicated with the seeding port 1 or the seeding port 2 respectively.

[0131] In this embodiment, if Figure 10 and Figure 11 As shown, the seeder in this embodiment includes the above-mentioned seed wheel for the seeder. When the seeder in this embodiment is used to sow seeds, when the seeds enter between the seed avoidance end face 191 and the arc-shaped convex surface, the seeds that enter between the seed avoidance end face 191 and the arc-shaped convex surface can pass through the gap between the seed avoidance end face 191 and the arc-shaped convex surface and will not get stuck between the seed avoidance end face 191 and the arc-shaped convex surface, thereby avoiding the seeds from getting stuck between the seed avoidance end face 191 and the arc-shaped convex surface, and also avoiding two or more seeds from overlapping and being squeezed between the seed avoidance end face 191 and the arc-shaped convex surface, which is beneficial to improving the reliability and stability of the seeder in taking and sowing seeds. Therefore, when the seeder in this embodiment is used to sow wheat seeds, it is beneficial to improve the reliability and stability of the seeder in taking and sowing wheat seeds, thereby improving the appropriateness of the wheat planting density.

[0132] In this embodiment, if Figure 10 and Figure 11As shown, in this embodiment, in order to facilitate locking the top stop wheel disc 72 and the pressure plate 73 on the two ends of the seed wheel body, a bolt through hole five 39 is provided on the arc limiting unit 3, and the bolt through hole five 39 axially passes through the arc limiting unit 3, and a plurality of through hole structures are provided on the top stop wheel disc 72 and the pressure plate 73 corresponding to the bolt through hole five 39, respectively, and the top stop wheel disc 72 and the pressure plate 73 are locked on the two ends of the seed wheel body by a plurality of bolts 2 8 and a plurality of nuts 2 80.

[0133] In this embodiment, if Figure 10 and Figure 11 As shown, the acupuncture nozzle 9 in this embodiment includes an arc-shaped support plate, a fixed nozzle part and a movable nozzle part. In order to facilitate the installation of the acupuncture nozzle 9 in this embodiment, an assembling top-stop convex block 1 36 is provided at the right end of the arc-shaped limiting unit 3, an assembling top-stop convex block 2 38 is provided at the left end of the arc-shaped limiting unit 3, and a limiting convex block 37 is provided in the middle of the arc-shaped limiting unit 3. When multiple arc-shaped limiting units 3 are connected end to end, the assembling top-stop convex block 1 36 and the assembling top-stop convex block 2 38 on the two adjacent arc-shaped limiting units 3 stop each other, forming a limiting convex structure with a size comparable to that of the limiting convex block 37; the assembling top-stop convex block 1 36 and the assembling top-stop convex block 2 38 on the two adjacent arc-shaped limiting units 3 stop each other, and form a limiting convex structure with a size comparable to that of the limiting convex block 37; Arc-shaped limiting grooves for installing the arc-shaped support plate are respectively formed between the limiting protrusions 37 and between the assembled top-stop protrusion 2 38 and the limiting protrusion 37. The arc-shaped support plate is installed in the arc-shaped limiting groove, and a seed drop port is provided on the arc-shaped support plate facing the seed-out slot 1 31 or the seed-out slot 2 32. The fixed nozzle part of the hole-seeding nozzle 9 is fixedly connected to the arc-shaped support plate and is located on one side of the seed drop port, and the movable nozzle part is movably installed between the top-stop wheel 72 and the pressure plate 73 facing the fixed nozzle part and is located on the other side of the seed drop port. The movable nozzle part cooperates with the fixed nozzle part to control the opening and closing time of the hole-seeding nozzle 9, thereby controlling the seeding time of the corresponding hole-seeding nozzle 9.

[0134] Further, such as Figure 4 and Figure 5 As shown, in this embodiment, to enhance the stability of the fixed installation of the arc-shaped support plate, a bolt through-hole 24 35 is provided on the front side of the arc-shaped limiting unit 3, facilitating the use of bolts and nuts to secure the arc-shaped support plate to the radially outer side of the arc-shaped limiting unit 3. It should be noted that the specific structure and installation method of the acupuncture nozzle 9 can also refer to existing technologies in the art.

[0135] In this embodiment, the right end of the stop wheel disc 72 in this embodiment is connected with a mounting protrusion, and an axial mounting groove is provided on the mounting protrusion. The rotating support assembly is fixedly mounted on the outside of the support shaft 7 and is located in the axial mounting groove; in addition, the seed wheel body and the pressure plate 73 in this embodiment are fixedly connected with the stop wheel disc 72, so that the seed wheel body, the stop wheel disc 72 and the pressure plate 73 can rotate synchronously circumferentially relative to the support shaft 7.

[0136] In this embodiment, if Figure 10 and Figure 11 As shown, the seed-taking drive mechanism in this embodiment includes a seed-taking swinging drive rail 712 and a torsion spring. The seed-taking swinging drive rail 712 is provided with arc-shaped protrusions and arc-shaped grooves arranged alternately. In addition, in order to facilitate the installation of the seed-taking swinging drive rail 712, a drive support plate 7171 is provided in this embodiment. The drive support plate 7171 includes a mounting plate and a rotation support protrusion. The rotation support protrusion is connected to the center of the right side of the mounting plate and extends to the right. The seed-taking swinging drive rail 712 is installed on the left side of the mounting plate and is located at the top stop wheel. On the right side of the disc 72, a mounting groove 1 713 is provided on the rotation support protrusion in this embodiment. The rotation support protrusion is rotatably mounted on the outer periphery of the mounting protrusion of the top-stop wheel disc 72 via two rotation support bearings 70. The two rotation support bearings 70 are mounted within the mounting groove 1 713 on the rotation support protrusion. In addition, a top-stop limit groove 711 is provided at the right end of the rotation support protrusion. The top-stop limit groove 711 is used to engage with the locking protrusion on the lateral fixed wheel disc 74 to fix the setting orientation of the seeding swing drive rail 712. It should be noted that the torsion spring is not shown in this embodiment.

[0137] Furthermore, other structures and installation methods of the seed taking mechanism in this embodiment can also refer to the existing technology in this field, and the specific structure and setting method of the seed taking swing drive rail 712 can also refer to the existing technology in this field, which will not be repeated here.

[0138] In this embodiment, if Figure 10 and Figure 11 As shown, a circular mounting opening is formed in the middle of the pressure plate 73. The circular mounting opening is used to mount a lateral fixed disc 74. The lateral fixed disc 74 is fixed to the circumference of the support shaft 7 by a nut. The support shaft 7 passes through the center of the lateral fixed disc 74. The lateral fixed disc 74 is provided with a seed inlet for feeding seeds, which facilitates mounting one end of a seed delivery tube on the seed inlet and connecting the other end of the seed delivery tube to a seed storage box, so that seeds can be added to the seed storage cavity in the seeder through the seed delivery tube. Furthermore, the outer side of the lateral fixed disc 74 is close to the inner side wall of the circular mounting opening, and the gap formed between the outer side of the lateral fixed disc 74 and the inner side wall of the circular mounting opening is small. When the seeder rolls, the pressure plate 73 rotates relative to the lateral fixed disc 74. It should be noted that the specific structure and installation method of the lateral fixed wheel 74 can refer to the existing technology in this field. The lateral fixed wheel 74 is not the focus of this application and will not be described in detail here. In addition, the seed removal mechanism in the seeder, other structures and working principles of the seeder can also refer to the hole seeder or similar seeder in the existing technology and will not be described in detail here.

[0139] In this embodiment, if Figure 10As shown, the abandoned seed groove 2 33 in this embodiment axially passes through the arc-shaped limiting unit 3 at one end away from the abandoned seed groove 1, and a abandoned seed discharge port 731 is provided on the pressure plate 73 at the outer end of the abandoned seed groove 2 33; it is convenient to abandon seeds from the lateral direction of the seeder, and the seeds discharged from the abandoned seed groove 2 33 are discharged outside the sowing row area, so as to avoid the seeds discharged from the abandoned seed groove 2 33 affecting the appropriateness of the planting density in the sowing row area, especially for the sowing of wheat seeds.

[0140] In addition, in addition to the technical solutions disclosed in this embodiment, the seed-taking mechanism, torsion spring, other parts of the seeder and their working principles in the utility model can refer to the conventional technical solutions in this technical field, and these conventional technical solutions are not the focus of the utility model, and the utility model will not be described in detail here.

[0141] In this utility model, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean fixed, removable, or integral; "connected" can mean directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0142] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present application.

[0143] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0144] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A seed removal assembly for a seeder, characterized in that: include: An arc-shaped support unit, wherein a mounting and receiving groove is provided on the radial inner side of the arc-shaped support unit, and the mounting and receiving groove is open at one end toward the radial inner side of the arc-shaped support unit; the arc-shaped support unit is further provided with a seeding through groove, and the seeding through groove is located on one side of the mounting and receiving groove in the circumferential direction and is connected to the mounting and receiving groove, and the end of the seeding through groove facing away from the mounting and receiving groove passes through the radial outer side of the arc-shaped support unit to form a seeding opening; The seed taker is rotatably mounted in the mounting and receiving groove, with the rotation center axis of the seed taker facing the axial direction of the arc-shaped support unit, and a seed taking nest is provided on the seed taker, and the seed taker can rotate circumferentially in the mounting and receiving groove under the drive of the rotation drive mechanism so that the seed taking nest has a seed entry position and a seed dropping position, and when the seed taking nest is in the seed entry position, the open end of the seed taking nest faces the radial inner side of the arc-shaped support unit and the seeds close to the seed taking nest can enter and be stored in the seed taking nest; when the seed taking nest is in the seed dropping position, the open end of the seed taking nest faces the seed discharging slot and can drop the seeds stored in the seed taking nest into the seed discharging slot; The seed taker is provided with an arc-shaped convex surface formed on the outer side wall of the seed taking nest, and a seed-blocking protrusion is provided on the arc-shaped supporting unit facing the arc-shaped convex surface, and the seed-blocking protrusion is arranged on one side of the installation and receiving groove and close to the open end of the installation and receiving groove, and the seed-blocking protrusion protrudes toward the arc-shaped convex surface and extends into the installation and receiving groove, and the end face of the seed-blocking protrusion facing the arc-shaped convex surface forms a seed-avoiding end face, and the minimum distance between the seed-avoiding end face and the arc-shaped convex surface is distance one, and the distance one is greater than the waist diameter of one seed, and the maximum distance between the seed-avoiding end face and the arc-shaped convex surface is distance two, and the distance two is less than the sum of the waist diameters of two seeds; An elastic seed clearing member is installed on one side of the installation and receiving groove facing the arc-shaped raised surface, and the elastic seed clearing member is located radially inward of the seed-blocking protrusion. The elastic seed clearing member extends close to the arc-shaped raised surface to form an elastic seed clearing portion.

2. The seed removal assembly for a seeder according to claim 1, characterized in that: The size of the spacing 1 is a, and the range of a is 4.3 mm <a<6.5mm。 3. The seed removal assembly for a seeder according to claim 1, characterized in that: The seeding slot includes a first seeding slot and a second seeding slot, the first seeding slot and the second seeding slot are located on one side of the installation and receiving slot in the circumferential direction and are respectively connected to the installation and receiving slot, a seed separation rib is provided between the first seeding slot and the second seeding slot facing the end of the installation and receiving slot, the seed separation rib is connected to the arc-shaped support unit and extends close to the arc-shaped convex surface to form a seed separation end, the seed separation end is arranged opposite to the seed remover, and the seed separation end is provided with an arc-shaped avoidance recessed groove opposite to the arc-shaped convex surface; The seeding opening includes a first seeding opening and a second seeding opening, and one end of the first seeding slot and the second seeding slot, which are away from the installation receiving slot, respectively passes through the radial outer side of the arc-shaped support unit to form the first seeding opening and the second seeding opening; There are multiple seed taking holes, and the multiple seed taking holes are spaced apart along the axial direction of the seed taking device. The seed separating rib is located in the middle of the multiple seed taking holes.

4. The seed removal assembly for a seeder according to claim 3, characterized in that: A plurality of seed avoidance openings are provided on the elastic seed cleaning portion, facing the plurality of seed taking holes.

5. The seed removal assembly for a seeder according to claim 3, characterized in that: There are two seed taking holes, and the two seed taking holes are spaced apart along the axial direction of the seed taking device. The seed separating rib is located in the middle of the two seed taking holes.

6. The seed removal assembly for a seeder according to any one of claims 3 to 5, characterized in that: Also includes: An arc-shaped limiting unit is installed on the radial outer side of the arc-shaped supporting unit, and a seed outlet groove is provided on the radial inner side of the arc-shaped limiting unit facing the seeding opening. The seed outlet groove is connected to the seeding opening toward the end of the arc-shaped supporting unit, and one end of the seed outlet groove, which is away from the arc-shaped supporting unit, radially passes through the radial outer side of the arc-shaped limiting unit. The radial inner side of the arc-shaped limiting unit is also provided with a second seed outlet groove facing the second seeding opening, and the second seed outlet groove is connected with the second seeding opening toward the port of the arc-shaped supporting unit, and the end of the second seed outlet groove facing away from the arc-shaped supporting unit radially passes through the radial outer side of the arc-shaped limiting unit.

7. The seed removal assembly for a seeder according to claim 6, characterized in that: The outer wall of the seed dispensing device is provided with a seed discarding groove 1, the seed discarding groove 1 is located at the radial outer side of the installation and receiving groove and is connected to the installation and receiving groove, and the seed discarding groove 1 is respectively connected to the seed outlet groove 1 and the seed outlet groove 2, and a seed drop guide protrusion is provided between the seed discarding groove 1 and the seed outlet groove 1 and the seed outlet groove 2, and the seed drop guide protrusion is arranged directly opposite the radial outer wall of the seed dispensing device, and the seed drop guide protrusion is used to guide the seeds thrown from the seed dispensing nest to move toward the seed outlet groove 1 and the seed outlet groove 2, and the minimum spacing between the end face of the seed dispensing device toward the radial outer wall of the seed dispensing device and the seed drop guide protrusion is spacing 3, the size of spacing 3 is larger than the waist diameter of a seed, and the seeds entering the spacing 3 can pass through the spacing 3 into the seed discarding groove 1 and be discharged outward from the seed discarding groove 1; A second seed discarding slot is provided on the radial inner side of the arc-shaped limiting unit, facing the first seed discarding slot. The port of the second seed discarding slot close to the first seed discarding slot is connected to the first seed discarding slot, and the end of the second seed discarding slot away from the first seed discarding slot passes through the arc-shaped limiting unit.

8. The seed removal assembly for a seeder according to claim 7, characterized in that: One end of the second discarded seed through groove away from the first discarded seed through groove axially passes through the arc-shaped limiting unit.

9. A seed wheel for a seeder, characterized in that: include: The seed taking assembly for a seeder as described in any one of claims 3 to 5 above is provided with a plurality of seed taking assemblies, and the plurality of seed taking assemblies are connected end to end in a circumferential direction to form a circular supporting wheel body.

10. The seed wheel body for a seeder according to claim 9, characterized in that: Also includes: A plurality of arc-shaped limiting units are provided, one corresponding to each of the plurality of arc-shaped supporting units, and the plurality of arc-shaped limiting units are respectively installed on the radially outer sides of the arc-shaped supporting units, and radially inner sides of the arc-shaped limiting units are respectively provided with seed-discharging grooves facing the seed-discharging openings close thereto, and the ports of the seed-discharging grooves facing the arc-shaped supporting units are respectively connected with the seed-discharging openings close thereto, and one end of the seed-discharging grooves facing away from the arc-shaped supporting unit radially passes through the radially outer sides of the arc-shaped limiting units; The radial inner sides of the arc-shaped limiting units are respectively provided with second seeding slots facing the second seeding opening close thereto, and the ports of the second seeding slots facing the arc-shaped supporting units are respectively connected to the second seeding opening close thereto, and the ends of the second seeding slots facing away from the arc-shaped supporting units respectively radially pass through the radial outer sides of the arc-shaped limiting units; The outer wall of the seed dispensing device is provided with a seed discarding groove 1, the seed discarding groove 1 is located at the radial outer side of the installation and receiving groove and is connected to the installation and receiving groove, and the seed discarding groove 1 is respectively connected to the seed outlet groove 1 and the seed outlet groove 2, and a seed drop guide protrusion is provided between the seed discarding groove 1 and the seed outlet groove 1 and the seed outlet groove 2, and the seed drop guide protrusion is arranged directly opposite the radial outer wall of the seed dispensing device, and the seed drop guide protrusion is used to guide the seeds thrown from the seed dispensing nest to move toward the seed outlet groove 1 and the seed outlet groove 2, and the minimum spacing between the end face of the seed dispensing device toward the radial outer wall of the seed dispensing device and the seed drop guide protrusion is spacing 3, the size of spacing 3 is larger than the waist diameter of a seed, and the seeds entering the spacing 3 can pass through the spacing 3 into the seed discarding groove 1 and be discharged outward from the seed discarding groove 1; A second seed discarding slot is provided on the radial inner side of the arc-shaped limiting unit, facing the first seed discarding slot. The port of the second seed discarding slot close to the first seed discarding slot is connected to the first seed discarding slot, and the end of the second seed discarding slot away from the first seed discarding slot passes through the arc-shaped limiting unit.

11. A seeder, characterized in that: include: The seed wheel body for a seeder according to any one of claims 9 to 10; A top-stop wheel disc is mounted on one end of the seed wheel body in the axial direction; A pressure plate is mounted on the other end of the seed taking wheel body in the axial direction opposite to the top stop wheel disc, and a seed storage cavity for storing seeds is defined between the seed taking wheel body, the top stop wheel disc and the pressure plate. When the seed taking nest is located at the seed feeding position, the open end of the seed taking nest is communicated with the seed storage cavity, and seeds close to the seed taking nest can enter and be stored in the seed taking nest; A seed taking drive mechanism is installed in the seed storage cavity, and the seed taking device is connected to the seed taking drive mechanism and can rotate circumferentially in the installation storage groove under the drive of the seed taking drive mechanism; A support shaft, the support shaft horizontally and axially passing through the center of the top stop wheel disc and the pressure plate; A rotation support assembly is fixedly mounted on the peripheral side of the support shaft, the seed wheel body, the top-stop wheel disc and the pressure plate are mounted on the outer periphery of the rotation support assembly, and the seed wheel body, the top-stop wheel disc and the pressure plate can rotate synchronously in the circumferential direction relative to the support shaft; A plurality of hole-seeding nozzles are provided corresponding to the plurality of the first seeding ports and the plurality of the second seeding ports, and each of the hole-seeding nozzles is communicated with the first seeding port or the second seeding port respectively.

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