Seed taking combined device of tray hole type precision dibbler

Abstract

The invention relates to the field of agricultural machinery, in particular to a seed taking combined device of a tray hole type precision dibbler, which is mounted on the inner side of a seed blocking cover of the dibbler and mainly comprises a core tray, a seed taking tray and a seed blocking tray, the seed blocking disc is buckled on the periphery of the positioning convex edge of the core disc and is detachably connected with the positioning convex edge of the core disc; the seed taking disc is buckled above the seed blocking disc and can rotate in the circumferential direction of the seed blocking disc, in the rotating process of the seed taking disc, seeds in the seed taking nest of the seed taking disc rotate along with the seed taking disc, and when the seeds pass through the seed throwing notch of the seed blocking disc, the seeds fall into the seed throwing notch from the seed taking nest along the seed discharging opening. The dibbler has the advantages of being reasonable in structure, economical, practical, flexible, convenient, stable in performance, capable of achieving precise seed taking and accurate seed metering, higher in working efficiency due to mutual cooperation of seed taking sub-components, and capable of improving the whole dibbling operation efficiency and quality of the dibbler.

Description

Technical Field

[0001] The invention relates to the field of agricultural machinery, in particular to a seed taking combination device for a disc hole type precision seeder on a seeder. Background Art

[0002] In the prior art, the precision seeding device is mainly composed of a moving disk, a fixed disk, a seed chamber, and a seeding nozzle. When the precision seeding device is in seeding operation, the fixed disk does not rotate, but the moving disk rotates. A seed taking device is provided in the seed chamber, and the seeding nozzle rotates with the moving disk. The seeding nozzle mainly includes a fixed nozzle and a moving nozzle. The moving nozzle is hinged to the fixed nozzle and can rotate along the hinge point to complete the opening and closing of the seed outlet. When the seed taking device of the seeding device throws the seeds from the seed chamber to the inside of the fixed nozzle, the seeds will automatically slide down and fall into the seed hole from the seed outlet to complete the seeding process. During the sowing operation, the seeding device rotates in the forward direction according to the rotation direction of the seeding nozzle, and the various components cooperate to achieve precision seeding.

[0003] Chinese patent CN201310076864.7 discloses a seed-taking device for a precision seeding device, the main body of which includes a fixed block, the fixed block is provided with a hole, a movable eight-arm rotating shaft is provided in the hole, a pair of seed-taking rotating wheels are provided on the eight-arm rotating shaft, one of which is a male rotating wheel and the other is a female rotating wheel, the male rotating wheel and the female rotating wheel are arranged in parallel and installed in a concave hole provided on the fixed block, seed-taking holes are provided on the outer wall of the male rotating wheel and the female rotating wheel, a torsion spring is provided at one end of the eight-arm rotating shaft, and an eight-arm is provided at the other end, and the eight-arm corresponds to a cam plate with a tripping tooth. Although this seed-taking structure can realize precision seeding and change the number and size of seed-taking holes, it has a relatively complex structure and cannot fully meet the actual work needs.

[0004] In recent years, disc-hole type precision seeding devices have been widely used in agricultural crop spot seeding operations. The various sub-components such as seed collection and seeding cooperate with each other to achieve the technical effect of precision seeding. In order to achieve better precision seeding, the various components of the disc-hole type precision seeding devices are made universal, and the quality of saving seeds, ensuring neat germination, no empty holes and no misalignment is improved. The present invention designs a new seed collection combination device, which makes the sowing efficiency higher and the germination quality better. Summary of the invention

[0005] The object of the present invention is to provide a seed taking combination device for a disc hole type precision seeding device which has a reasonable structure, is economical and practical, has a more complete seed taking function, has higher working efficiency through cooperation of various components, and can improve the quality of seeding operations.

[0006] The invention discloses a seed taking assembly device of a disc hole type precision spot seeder, which is installed on the inner side of a seed blocking cover of the spot seeder and mainly comprises a core disc, a seed taking disc and a seed blocking disc; The core plate is a bowl-shaped plate body, including a core plate body, on which a bearing mounting hole, a positioning screw, and a positioning convex edge arranged on the inner side are provided; the seed-blocking plate is a circular sheet body, and an arc-shaped notch is provided on the outer edge, and the arc-shaped notch forms a seed-casting notch; the seed-blocking plate is buckled on the outer periphery of the positioning convex edge of the core plate and is detachably connected; The seed taking disc is a circular disc body, and a movable disc mounting hole is provided on the seed taking disc body. A plurality of seed taking openings in the shape of notches are evenly distributed on the inner circle of the seed taking disc, and the openings of the seed taking openings are arranged in a clockwise or counterclockwise direction. The lower part of the seed taking port is a seed taking hole, and the seed taking hole is composed of a built-in seed taking nest and a trumpet-shaped seed discharging port. The central axis of the seed taking nest and the seed discharging port is arranged in an inclined direction, and the opening faces the inner wall of the seed taking plate; the seed taking nest is arranged at the bottom of the seed taking hole, and the shape is a concave nest with a geometric shape similar to that of a half truncated cone, the concave nest has a small bottom and a large upper mouth, and the upper part of the seed taking nest extends upward to expand to form an incomplete trumpet-shaped seed discharging port; The lower bottom of the seed taking hole, which is located outside the seed taking hole, is provided with a seed blocking wall protruding outwards, and the shape is an arc-shaped protrusion that is approximately semicircular; The front end of the seed taking port is provided with a seed cleaning slope at the transition forward, the seed cleaning slope is an inclined extension surface, and a seed scraping angle is provided on one side of the rear end of the seed taking port, the seed scraping angle is a wedge-shaped body, one surface of which is a part of the annular inner circumference, and the other surface is the upper end of the rear side wall surface of the seed taking hole, the above two surfaces extend and transition to form an intersection, and an angle is formed after the intersection, which is a wedge-shaped angle A, and the wedge-shaped angle A is an acute angle; The seed taking plate is buckled on the top of the seed blocking plate, and the seed taking plate can rotate along the circumferential direction of the seed blocking plate. During the rotation of the seed taking plate, the seeds in the seed taking hole of the seed taking plate rotate together with the seed taking plate. When passing through the seed dropping recess of the seed blocking plate, the seeds fall from the seed taking hole along the seed discharge port into the seed dropping recess.

[0007] Preferably, the structure further comprises a seed cleaning brush and a seed remover, wherein the seed cleaning brush and the seed remover are both arranged on the inner side of the seed retaining cover and fixedly connected to the seed retaining cover, and the positions of the seed cleaning brush and the seed remover are both arranged close to the seed removal tray.

[0008] The structure of the seed cleaning brush includes bristles and a bristle base, and the structure of the seed remover includes a seed removing head and a spring body. The seed cleaning brush is fixed on the seed blocking cover, and the bristles are facing the seed taking disk. In the rotation direction of the seed taking disk, the installation position of the seed cleaning brush is close to the seed cleaning inclined surface of the seed taking disk; the seed remover, the seed removing head is facing the seed taking disk, and the installation position of the seed remover on the seed blocking cover is closer to the seed inlet on the seed blocking cover than the installation position of the seed cleaning brush.

[0009] Preferably, the seed clearing slope of the seed removal plate is an arc-shaped beveled slope extending obliquely from the outer wall toward the annular inner circumferential surface.

[0010] Preferably, the angle B formed by the opening shapes of the evenly distributed seed taking openings is an acute angle.

[0011] Preferably, the core disc is fixedly connected to the seed blocking cover via the positioning screw.

[0012] Preferably, reinforcing ribs are provided on the inner side of the core plate body.

[0013] The present invention is used in conjunction with the existing moving disk, seed blocking cover, seeding nozzle and other components of the precision seeding device. The core disk is provided with a moving disk fixing hole 6, which is fixedly connected to the moving disk of the precision seeding device through the moving disk fixing hole 6. The seed taking disk is provided with a positioning screw 5, which is fixedly connected to the seed blocking cover of the seeding device. The seed blocking disk is buckled on the periphery of the positioning convex edge of the core disk and is detachably connected; the seed taking disk is buckled on the top of the seed blocking disk, and with the rotation of the moving disk, the seed taking disk can rotate along the circumferential direction of the seed blocking disk. During the rotation of the seed taking disk, the seed taking nest of the seed taking disk takes seeds from the seed chamber, and the seeds in the seed taking nest rotate with the seed taking disk. The seed blocking disk is blocked below, and the seeds in the seed taking nest will not fall down. The seeds rotate with the movement of the seed taking disk. When passing through the seeding recess of the seed blocking disk, the seeds fall from the seed taking nest along the seed discharge port into the seeding recess. At the same time, the seed cleaning brush fixed at the end of the seeding notch in the direction of the rotation route can scrape off the excess seeds that are not dropped, so that the excess seeds fall back into the seed chamber. The seeds that fall into the seeding notch will enter the seeding nozzle along the seeding channel and be planted in the soil. The function of the seeding device is that after the seeds are taken from the seeding hole, the seeds naturally slide down to the seeding nozzle at a slow speed, and the seeding speed can be accelerated by the seeding device.

[0014] The seed taking plate provided by the present invention is generally fixedly installed on the inner side of the moving plate of the seed spotter when in use, and seeds are placed in the seed chamber of the seed spotter. When the seed spotter rotates, the scraping angle scrapes the seeds into the seed taking holes of the seed taking plate. During the rotation, the excess seeds are removed by the seed clearing inclined surface, and the accurately pre-selected seeds are blocked by the seed blocking wall and retained in the concave seed taking nest with a semi-conical geometric shape. As the rotation occurs, the seeds roll from the bottom of the seed taking nest to the nest mouth. Since the seed taking nest has a semi-conical geometric shape, its outlet is large, and the seeds can be delivered to the seed discharge port, that is, the trumpet-shaped seed discharge channel. The seeds slide down along the trumpet-shaped seed discharge channel, and the seed taking and seed discharge process is successfully completed.

[0015] The seed taking combination device provided by the present invention utilizes the mutual cooperation of the core plate, the seed taking plate and the seed blocking plate to complete the precise seed taking with high quality, which provides the prerequisite for the precise sowing of the spot seeding operation, ensures that the spot seeding device saves seeds and does not leave empty holes during operation, and because the entire process from seed feeding to seed taking is short and the process is fast, sowing can be avoided, thus ensuring precise sowing and sowing speed, improving efficiency, shortening the sowing period, and further ensuring the uniform emergence of seedlings in the later stage.

[0016] Compared with the prior art, the seed-taking combination device of the disc-hole type precision seeding device provided by the present invention has the advantages of reasonable structure, economy and practicality, can realize precision seed taking, and can complete accurate seeding, is flexible and convenient, has stable performance, and the seed-taking sub-components cooperate with each other to have higher working efficiency, which can improve the overall seeding operation efficiency and quality of the seeding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the combined device in Example 1 of the present invention.

[0018] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure along the AA direction.

[0019] Figure 3 for Figure 1 Schematic diagram of the main structure after the core disk and the seed blocking disk are combined.

[0020] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the BB direction.

[0021] Figure 5 for Figure 3 Schematic diagram of the rear view structure after the core disk and the seed blocking disk are combined.

[0022] Figure 6 for Figure 1 Schematic diagram of the main structure of the core disk.

[0023] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure in the CC direction.

[0024] Figure 8 for Figure 6 Schematic diagram of the rear view structure of the core disk.

[0025] Fig. 9 for Figure 1 Schematic diagram of the main structure of the middle-block seed tray.

[0026] Fig.10 This is a schematic diagram of the main structure of the seed tray in Example 1 of the present invention.

[0027] Fig.11for Fig.10 Schematic diagram of the cross-sectional structure in the DD direction.

[0028] Fig.12 for Fig.10 Schematic diagram of the structure of the partially enlarged part.

[0029] Fig.13 for Fig.12 Schematic diagram of the left view structure.

[0030] Fig.14 for Fig.10 Schematic diagram of the rear view structure of the middle seed tray.

[0031] Fig.15 for Fig.14 Schematic diagram of the structure of the partially enlarged part.

[0032] Fig.16 for Figure 1 Schematic diagram of the structure of the medium cleaning brush.

[0033] Fig.17 for Figure 1 Schematic diagram of the structure of the middle seed drill.

[0034] Fig.18 The present invention is a schematic structural diagram of the installation position relationship when the combined device is used.

[0035] As shown in the figure: 1 is a seed taking plate, 2 is a core plate, 3 is a seed cleaning brush, 4 is a seed dialer, 5 is a positioning screw, 6 is a movable plate fixing hole, 7 is a bearing mounting hole, 8 is a seed blocking cover, 9 is a seed inlet, 10 is a seed casting recess, 11 is a seed blocking plate, 12 is a core plate body, 12-1 is a positioning convex edge, 13 is a seed taking port, 14 is a seed blocking wall, 15 is a seed scraping angle, 16 is a seed cleaning inclined surface, 17 is an annular inner circumference, 18 is a wedge-shaped angle A, 19 is a seed taking hole, 20 is an outer wall, 20-1 is an inner wall, 21 is an angle B, 22 is a seed discharge port, 23 is a seed taking nest, 24 is a brush base, 25 is a brush, 26 is a spring body, 27 is a seed dialer head, 28 is a seed, 29 is a movable plate of the seeding device, 30 is a reinforcing rib, and 31 is a rear wall surface of the seed taking hole. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Embodiment 1: Reference Figure 1-Figure 14A seed taking assembly device of a disc hole type precision seeding device is installed on the inner side of a seed blocking cover 8 of the seeding device, and mainly comprises a core disc 2, a seed taking disc 1, and a seed blocking disc 11; The core disk 2 is a bowl-shaped disk body, including a core disk body 12, on which a bearing mounting hole 7, a positioning screw 5, and a positioning convex edge 12-1 arranged on the inner circle are provided; the seed-blocking disk 11 is a circular sheet body, and an arc-shaped notch is provided on the outer edge, and the arc-shaped notch forms a seed-dropping recess 10; the seed-blocking disk 11 is buckled on the outer periphery of the positioning convex edge 12-1 of the core disk 2 and is detachably connected.

[0038] The seed taking disc 1 is a circular disc body, and a movable disc mounting hole 6 is provided on the seed taking disc body. A plurality of seed taking openings 13 in the shape of notches are evenly distributed on the inner circle of the seed taking disc 1, and the openings of the seed taking openings 13 are arranged in a clockwise or counterclockwise direction. The lower part of the seed taking port 13 is a seed taking hole 19, and the seed taking hole 19 is composed of a built-in seed taking nest 23 and a trumpet-shaped seed discharging port 22. The central axis of the seed taking nest and the seed discharging port is set in an inclined direction, and the opening faces the inner side wall 20-1 of the seed taking plate 1; the seed taking nest 23 is set at the bottom of the seed taking hole 19, and is shaped like a concave nest with a geometric shape similar to that of a half truncated cone, with a small bottom and a large upper mouth. The upper part of the seed taking nest 23 extends upward to form an incomplete trumpet-shaped seed discharging port 22; The lower bottom of the seed taking nest 2, which is located outside the seed taking hole 19, is provided with a seed blocking wall 14 protruding outwards, which is in the shape of an arc-shaped protrusion that is approximately semicircular; The front end of the seed taking port 13 is provided with a seed cleaning slope 16 at the transition forward, and the seed cleaning slope 16 is an inclined extension surface. A seed scraping angle 15 is provided on one side of the rear end of the seed taking port 13. The seed scraping angle 15 is wedge-shaped, one surface of which is a part of the annular inner peripheral surface 17, and the other surface is the upper end of the rear side wall surface 31 of the seed taking hole. The above two surfaces extend and transition to form an intersection, and an angle is formed after the intersection, which is a wedge-shaped angle A18, and the wedge-shaped angle A18 is an acute angle; The seed taking disc 1 is buckled on the top of the seed blocking disc 11, and the seed taking disc 1 can rotate along the circumferential direction of the seed blocking disc 11. During the rotation of the seed taking disc 1, the seeds in the seed taking holes 23 of the seed taking disc 1 rotate together with the seed taking disc 1. When passing through the seeding recess 10 of the seed blocking disc 11, the seeds fall from the seed taking holes 23 along the seed discharge opening 22 into the seeding recess 10; The seed clearing slope 16 of the seed taking plate 1 is an arc-shaped beveled slope extending obliquely from the outer side wall 20 toward the annular inner peripheral surface 17 .

[0039] The angle B21 formed by the opening shapes of the uniformly distributed seed taking openings 13 is an acute angle.

[0040] The core disc 2 is fixedly connected to the seed blocking cover 8 via the positioning screw 5 .

[0041] The present invention is used in conjunction with the existing moving disk, seed blocking cover, seeding nozzle and other components of the precision seeding device. The core disk 2 is provided with a moving disk fixing hole 6, which is fixedly connected to the moving disk of the precision seeding device through the moving disk fixing hole 6. The seed taking disk 1 is provided with a positioning screw 5, which is fixedly connected to the seed blocking cover of the seeding device. The seed taking disk 1 is buckled on the top of the seed blocking disk 11, and with the rotation of the moving disk, the seed taking disk 1 can rotate in a circumferential direction. During the rotation of the seed taking disk 1, the seed taking nest 23 of the seed taking disk 1 takes seeds from the seed chamber, and the seeds in the seed taking nest 23 rotate with the seed taking disk 1. The seed blocking disk 11 is blocked below, and the seeds in the seed taking nest 23 will not fall down. The seeds rotate with the movement of the seed taking disk 1. When passing through the seeding recess 10 of the seed blocking disk 11, the seeds fall from the seed taking nest 23 along the seed discharge port 22 into the seeding recess 10. The seeds falling into the seeding recess 10 will enter the seeding nozzle along the seeding passage and be planted in the soil.

[0042] Embodiment 2: Compared with Example 1, the difference of this embodiment is: The seed-taking combination device of the disc-hole type precision seed drill also includes a seed cleaning brush 3 and a seed remover 4. The seed cleaning brush 3 and the seed remover 4 are both arranged on the inner side of the seed blocking cover 8 and fixedly connected to the seed blocking cover 8. The positions of the seed cleaning brush 3 and the seed remover 4 are both arranged close to the seed-taking disc 1.

[0043] The structure of the seed cleaning brush 3 includes bristles 25 and a bristle base 24, and the structure of the seed remover 4 includes a seed removing head 27 and a spring body 26. The seed cleaning brush 3 is fixed on the seed blocking cover 8, and the bristles 25 are facing the seed taking plate 1. In the rotation direction of the seed taking plate 1, the installation position of the seed cleaning brush 3 is close to the seed cleaning slope 16 of the seed taking plate 1; the seed remover 4, the seed removing head 27 is facing the seed taking plate 1, and the installation position of the seed remover 4 on the seed blocking cover 8 is closer to the seed inlet 9 on the seed blocking cover 8 than the installation position of the seed cleaning brush 3.

[0044] The seeds rotate with the seed tray 1. When passing through the seeding recess 10 of the seed blocking tray 11, the seeds fall from the seeding nest 23 along the seeding opening 22 into the seeding recess 10. At the same time, the seed cleaning brush 3 fixed at the end of the seeding recess 10 in the direction of the travel route can scrape off the excess seeds that are not dropped by adhesion, so that the excess seeds fall back into the seed chamber. The function of the seeding device 4 is that when the seed tray 1 rotates to a certain angle, the seeds taken through the seeding hole 19 naturally slide down to the seeding mouth, and the sliding speed is slow. The seeding speed can be accelerated by the seeding device 4. The structure of connecting the seeding head 27 through the spring body 26 increases the elasticity of the seeding head 27 in the process of contacting the seed tray 1.

[0045] Embodiment 3: Compared with the first embodiment, the present embodiment is different in that a reinforcing rib 30 is provided on the inner side of the core plate body 12 .

[0046] Embodiment 4: Compared with the second embodiment, the present embodiment is different in that a reinforcing rib 30 is provided on the inner side of the core plate body 12 .

[0047] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A seed taking assembly device for a disc hole type precision seeding device, installed on the inner side of the seed blocking cover of the seeding device, characterized in that Mainly includes core tray, seed taking tray and seed blocking tray; The core plate is a bowl-shaped plate body, including a core plate body, on which a bearing mounting hole, a positioning screw, and a positioning convex edge arranged on the inner side are provided; the seed-blocking plate is a circular sheet body, and an arc-shaped notch is provided on the outer edge, and the arc-shaped notch forms a seed-casting notch; the seed-blocking plate is buckled on the outer periphery of the positioning convex edge of the core plate and is detachably connected; The seed taking disc is a circular disc body, and a movable disc mounting hole is provided on the seed taking disc body. A plurality of seed taking openings in the shape of notches are evenly distributed on the inner circle of the seed taking disc, and the openings of the seed taking openings are arranged in a clockwise or counterclockwise direction. The lower part of the seed taking port is a seed taking hole, and the seed taking hole is composed of a built-in seed taking nest and a trumpet-shaped seed discharging port. The central axis of the seed taking nest and the seed discharging port is arranged in an inclined direction, and the opening faces the inner wall of the seed taking plate; the seed taking nest is arranged at the bottom of the seed taking hole, and the shape is a concave nest with a geometric shape similar to that of a half truncated cone, the concave nest has a small bottom and a large upper mouth, and the upper part of the seed taking nest extends upward to expand to form an incomplete trumpet-shaped seed discharging port; The lower bottom of the seed taking hole, which is located outside the seed taking hole, is provided with a seed blocking wall protruding outwards, and the shape is an arc-shaped protrusion that is approximately semicircular; The front end of the seed taking port is provided with a seed cleaning slope at the transition forward, the seed cleaning slope is an inclined extension surface, and a seed scraping angle is provided on one side of the rear end of the seed taking port, the seed scraping angle is a wedge-shaped body, one surface of which is a part of the annular inner circumference, and the other surface is the upper end of the rear side wall surface of the seed taking hole, the above two surfaces extend and transition to form an intersection, and an angle is formed after the intersection, which is a wedge-shaped angle A, and the wedge-shaped angle A is an acute angle; The seed taking plate is buckled on the top of the seed blocking plate, and the seed taking plate can rotate along the circumferential direction of the seed blocking plate. During the rotation of the seed taking plate, the seeds in the seed taking hole of the seed taking plate rotate together with the seed taking plate. When passing through the seed dropping recess of the seed blocking plate, the seeds fall from the seed taking hole along the seed discharge port into the seed dropping recess.

2. The seed taking assembly device of the disc hole type precision seeding device as claimed in claim 1 is characterized in that Its structure also includes a seed cleaning brush and a seed remover, which are both arranged on the inner side of the seed blocking cover and fixedly connected to the seed blocking cover. The positions of the seed cleaning brush and the seed remover are both arranged close to the seed taking plate.

3. The seed taking assembly device of the disc hole type precision seeding device as claimed in claim 2 is characterized in that The structure of the seed cleaning brush includes bristles and a bristle base, and the structure of the seed remover includes a seed removing head and a spring body. The seed cleaning brush is fixed on the seed blocking cover, and the bristles are facing the seed taking disk. In the rotation direction of the seed taking disk, the installation position of the seed cleaning brush is close to the seed cleaning inclined surface of the seed taking disk; the seed remover, the seed removing head is facing the seed taking disk, and the installation position of the seed remover on the seed blocking cover is closer to the seed inlet on the seed blocking cover than the installation position of the seed cleaning brush.

4. The seed taking assembly device of the disc hole type precision seeding device as claimed in claim 1, 2 or 3, characterized in that The seed cleaning slope of the seed taking plate is an arc-shaped beveled slope extending obliquely from the outer wall toward the annular inner peripheral surface.

5. The seed taking assembly device of the disc hole type precision seeding device as claimed in claim 4 is characterized in that The angle B formed by the opening shapes of the uniformly distributed seed taking openings is an acute angle.

6. The seed taking assembly device of the disc hole type precision seeding device as claimed in claim 1, 2 or 3, characterized in that The core disc is fixedly connected to the seed blocking cover through the positioning screw.

7. The seed taking assembly device of the disc hole type precision seeding device as claimed in claim 5 is characterized in that The core disc is fixedly connected to the seed blocking cover through the positioning screw.

8. The seed taking assembly device of the disc hole type precision seeding device as claimed in claim 1, 2 or 3, characterized in that The inner side of the core plate body is provided with reinforcing ribs.

9. The seed taking assembly device of the disc hole type precision seeding device as claimed in claim 7 is characterized in that The inner side of the core plate body is provided with reinforcing ribs.

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