Magnetic fingertip type precision seed-metering device

Abstract

The utility model relates to a magnetic fingertip type precision seed-metering device, and belongs to the technical field of agricultural machinery. Comprising a seed-metering device shell, a seed-metering plate assembly rotationally arranged in the seed-metering device shell, a seed-metering shaft for driving the seed-metering plate assembly to rotate, a fingertip pressure plate connected to the seed-metering plate assembly, a plurality of magnet fingertip devices arranged between the seed-metering plate assembly and the fingertip pressure plate, and a permanent magnet fixedly connected in the seed-metering device shell, a seed inlet and a seed outlet are formed in the two sides of the seed metering device shell respectively, seed feeding channels opposite to the magnet fingertip devices are evenly arranged on the seed metering disc assembly, and the magnet fingertip devices move close to or away from the permanent magnets in a reciprocating mode under the action of magnetic force to push seeds into the feeding channels. The precision seed-metering device can realize mechanical precision seeding operation of medium and large seeds such as corn and soybeans, and has the advantages of strong adaptability to seed shapes and low seed damage rate.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of agricultural machinery, in particular to a magnetic fingertip type precision seed sowing device. BACKGROUND

[0002] Corn, soybean and the like are one of main food crops in China, and are suitable for precision sowing, and the traditional sowing technology has problems of seed waste and high labor cost of thinning, and therefore a corresponding precision seed sowing device is needed.

[0003] At present, the precision seed sowing device is mainly divided into pneumatic type and mechanical type, the pneumatic type precision seed sowing device has complex structure and high cost, and is mainly applied to large agricultural machines and is not suitable for use in China; the mechanical type precision seed sowing device basically meets the sowing requirements in China, but still has some problems, such as that important working parts of the precision seed sowing device are easy to wear, the working process is greatly affected by the shape of seeds, and there is a certain seed damage rate in the seed carrying process.

[0004] Therefore, a precision seed sowing device with strong adaptability to the shape of seeds and low seed damage rate is urgently needed. CONTENT OF THE INVENTION

[0005] The application aims to provide a magnetic fingertip type precision seed sowing device, which can realize mechanical precision sowing operation of corn, soybean and the like, and has the advantages of strong adaptability to the shape of seeds and low seed damage rate.

[0006] The magnetic fingertip type precision seed sowing device provided by the application adopts the following technical scheme:

[0007] The magnetic fingertip type precision seed sowing device comprises a seed sowing device shell, a seed sowing disc assembly rotatably arranged in the seed sowing device shell, a seed sowing shaft for driving the seed sowing disc assembly to rotate, a fingertip pressure disc connected to the seed sowing disc assembly, a plurality of magnet fingertip devices arranged between the seed sowing disc assembly and the fingertip pressure disc, and a permanent magnet fixedly connected to the seed sowing device shell, seed inlets and outlets are arranged on the two sides of the seed sowing device shell, seed feeding channels opposite to the magnet fingertip devices are uniformly arranged on the seed sowing disc assembly, and the magnet fingertip devices reciprocate towards or away from the permanent magnet under the action of magnetic force to push the seeds into the feeding channels.

[0008] As a preferred technical scheme of the application, the seed sowing device shell comprises a feeding side shell and a discharging side shell connected oppositely, the seed sowing shaft is rotatably connected between the feeding side shell and the discharging side shell, the feeding side shell is provided with a feeding inlet and a plurality of seed carrying areas distributed in a fan shape, and the permanent magnet is fixed to the inner side of the feeding side shell and rotatably sleeved on the seed sowing shaft.

[0009] As a preferred technical scheme of the application, the permanent magnet is a permanent magnet of a circular ring-shaped neodymium iron boron magnet.

[0010] As a preferred technical scheme of the application, the seed plate assembly comprises coaxially arranged outer seed plate and inner seed plate, the outer seed plate is sleeved and fixed to the outer ring of the inner seed plate, and the inner seed plate is fixedly sleeved on the seed plate shaft.

[0011] As a preferred technical scheme of the application, the outer seed plate is arranged in a circular ring shape, and a plurality of type holes serving as seed delivery channels are uniformly arranged on the outer edge of the side of the outer seed plate facing the feeding side shell in a circumferential direction, and the type holes are provided with outer push rod grooves arranged along the radial direction of the outer seed plate on the side close to the central axis of the outer seed plate.

[0012] As a preferred technical scheme of the application, the inner seed plate is arranged in a circular ring shape, and a plurality of magnet grooves are uniformly arranged on the inner edge of the side of the inner seed plate facing the feeding side shell in a circumferential direction, and the magnet grooves are provided with inner push rod grooves arranged along the radial direction of the inner seed plate on the side away from the central axis of the inner seed plate, and the inner push rod grooves are coaxially connected to the outer push rod grooves.

[0013] As a preferred technical scheme of the application, the magnet fingertip device comprises a fingertip device head, a fingertip push rod connected to one side of the fingertip device head, and a fingertip magnet arranged at the end of the fingertip push rod away from the fingertip device head, the fingertip device head is movably arranged in the type hole, the fingertip push rod is movably arranged in the outer push rod groove and the inner push rod groove, and the fingertip magnet reciprocates in the magnet groove.

[0014] As a preferred technical scheme of the application, the fingertip pressing disc is provided with fingertip push rod grooves matched with the outer push rod grooves and the inner push rod grooves, fingertip magnet grooves arranged opposite to the magnet grooves, and type hole matching areas arranged opposite to the type holes; the fingertip pressing disc is connected to the inner seed plate by bolts and rotates with the seed plate shaft in the seed plate shell.

[0015] In summary, the application has at least one of the following beneficial technical effects:

[0016] 1. The precision seed metering device of the application uses the principle of same-pole repulsion and opposite-pole attraction of permanent magnets to push the magnet fingertip device to reciprocate between the inner and outer seed plates and the fingertip pressing disc, push each seed into each seed delivery channel, and discharge the seeds from the seed outlet for mechanical precision seeding.

[0017] 2. The magnetic force between the permanent magnets and the fingertip magnets in the application is stable, the moving parts are more wear-resistant than those of traditional mechanical seed meters, and the service life is longer.

[0018] 3. The type hole is used as the seed delivery channel in the application, the shape of the type hole can be designed according to different seeds to meet the accurate delivery requirements of the seeds and reduce the seed damage rate; different crops can be seeded by replacing the outer seed plate, which is simple and convenient to operate.

[0019] 4. This application uses magnetic force to push seeds, and the magnetic field provided by the magnet can promote seed germination and improve seed survival rate. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the internal overall structure of the seed metering device according to an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of the internal structure of the seed metering device according to an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the structure of the feed-side housing in an embodiment of this application;

[0023] Figure 4 This is a schematic diagram of the structure of the seed tray in an embodiment of this application;

[0024] Figure 5 This is a schematic diagram of the internal seeding disc in an embodiment of this application;

[0025] Figure 6 This is a schematic diagram of the structure of the magnet fingertip device in the embodiments of this application;

[0026] Figure 7 This is a schematic diagram of the structure of the fingertip pressure plate in the embodiments of this application;

[0027] In the diagram, 1. Feed side shell; 10. Permanent magnet; 11. Feed inlet; 12. Seed carrying area; 13. Connecting ear plate; 14. Observation port; 2. Gearbox; 3. Outer seed discharge tray; 31. Shaped hole; 32. Outer push rod groove; 4. Inner seed discharge tray; 41. Inner push rod groove; 42. Magnet groove; 43. Seed tray fixing hole; 5. Magnet fingertip; 51. Fingertip head; 52. Fingert push rod; 53. Fingert magnet; 6. Fingert pressure plate; 61. Fingert push rod groove; 62. Fingert magnet groove; 63. Pressure plate fixing hole; 64. Shaped hole mating area; 7. Discharge side shell; 8. Fixing seat; 9. Seed discharge shaft. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1 -Appendix Figure 7 This application will be described in further detail below.

[0029] Example: This application proposes a magnetic fingertip precision seed metering device, referring to... Figures 1-2The device comprises a seed sowing device shell, a seed sowing disc assembly, a magnet finger tip device 5, a finger tip pressing disc 6, a seed sowing shaft 9 and a permanent magnet 10, and the seed sowing disc assembly, the magnet finger tip device 5, the finger tip pressing disc 6, the seed sowing shaft 9 and the permanent magnet 10 are all installed in the seed sowing device shell. The permanent magnet 10 is fixed in the seed sowing device shell, the seed sowing shaft 9 is rotatably connected in the seed sowing device shell and extends from one end of the seed sowing device shell, and the permanent magnet 10 rotates relative to the seed sowing shaft 9; the seed sowing disc assembly is fixedly connected on the seed sowing shaft 9 and rotates together with the seed sowing shaft 9 in the seed sowing device shell; the finger tip pressing disc 6 is detachably fixed on the seed sowing disc assembly, and the magnet finger tip device 5 is arranged in the space between the finger tip pressing disc 6 and the seed sowing disc assembly, and the magnet finger tip device 5 reciprocates relative to the permanent magnet 10 under the attraction and repulsion of the permanent magnet 10 to push the seeds into the seed dropping channel.

[0030] The seed sowing device shell comprises a feeding side shell 1 and a discharging side shell 7 which are connected oppositely, and the feeding side shell 1 and the discharging side shell 7 are both in the shape of a circular cover, and the interiors of the two form a space for placing and arranging seeds, and the seed sowing shaft 9 is rotatably connected between the feeding side shell 1 and the discharging side shell 7.

[0031] The lowermost side of the discharging side shell 7 is provided with a seed dropping port, and the seeds fall into the furrow through the seed dropping port, and the discharging side shell 7 is provided with a speed variator 2 for controlling the dropping speed of the seeds, and the bottom of the discharging side shell 7 is further provided with a fixing seat 8, so that the seed sowing device can be fixed on the seeding machine. In the embodiment, the seed sowing shaft 9 is connected with a driving mechanism such as a motor for controlling the rotation of the seed sowing shaft 9, and the speed of the seed sowing shaft 9 is controlled by the speed variator 2. The speed variator 2 is selected as a Zero-Max type stepless speed variator.

[0032] Referring to Figure 3 , the outer side of the feeding side shell 1 is provided with a feeding port 11, and the feeding port 11 is in the shape of a half pipe body buckled on the outer side of the feeding side shell 1, and the feeding port 11 is upwardly open and is connected to the seed sowing device shell through a through hole at the lower end, so that the seeds can be dropped into the seed sowing device shell from the feeding port 11. The outer side of the feeding side shell 1 is provided with a plurality of fan-shaped seed carrying areas 12 at the outer circle position away from the feeding port 11, and the seed carrying areas 12 are in the shape of a concave structure and are closer to the discharging side shell 7, so that the seeds can enter the seed dropping channel without running out. The outer side edges of the feeding side shell 1 and the discharging side shell 7 are provided with a plurality of connecting lugs 13, so that the feeding side shell 1 and the discharging side shell 7 are fixed by bolt connection. The outer side of the feeding side shell 1 is provided with an observation port 14 made of transparent material at the outer circle position at the end (low end) of the seed carrying area 12, which is used for observing the arrangement and carrying of the seeds passing through the seed carrying area 12. The permanent magnet 10 is coaxially fixed on the feeding side shell 1, and in the embodiment, the permanent magnet 10 is a permanent magnet of a circular ring-shaped neodymium iron boron magnet, and the permanent magnet 10 is rotatably sleeved on the seed sowing shaft 9.

[0033] Referring toFigure 1 The seed plate assembly comprises coaxially arranged outer seed plate 3 and inner seed plate 4, the outer seed plate 3 is sleeved and fixed on the outer ring of the inner seed plate 4, the outer ring of the inner seed plate 4 is provided with a ring of convex rings for supporting the outer seed plate 3, and the inner seed plate 4 is fixedly sleeved on the seed plate shaft 9.

[0034] Referring to Figure 4 The outer seed plate 3 is arranged in a circular ring structure, and a plurality of type holes 31 are uniformly arranged on the outer edge of the side of the outer seed plate 3 facing the feeding side shell 1 in the circumferential direction. The type holes 31 penetrate to both sides of the outer seed plate 3 as seed delivery channels, and the seeds fall into the type holes 31 by their own gravity. The type holes 31 are provided with outer push rod grooves 32 arranged along the radial direction of the outer seed plate 3 on the side close to the central axis of the outer seed plate 3. The cross section of the outer push rod groove 32 is semicircular, one end of the outer push rod groove 32 penetrates into the type hole 31, and the other end penetrates into the inner ring side surface of the outer seed plate 3.

[0035] Referring to Figure 5 The inner seed plate 4 is arranged in a circular ring structure, and a plurality of magnet grooves 42 are uniformly arranged on the inner edge of the side of the inner seed plate 4 facing the feeding side shell 1 in the circumferential direction. The side away from the central axis of the inner seed plate 4 of the magnet groove 42 is provided with an inner push rod groove 41 arranged along the radial direction of the inner seed plate. The cross-sectional shape of the inner push rod groove 41 is the same as that of the outer push rod groove 32, and the outer end of the inner push rod groove 41 extends to the outer circumferential surface of the inner seed plate 4, so that the inner push rod groove 41 is coaxially connected with the outer push rod groove 32. The side of the inner seed plate 4 facing the feeding side shell 1 is provided with a seed plate fixing hole 43, and the seed plate fixing hole 43 avoids the inner push rod groove 41.

[0036] Referring to Figure 6 The magnet fingertip device 5 comprises a fingertip device head 51, a fingertip push rod 52 and a fingertip magnet 53. The fingertip device head 51 is an irregular polyhedron, which extends into the type hole 31 and is used for cooperating with the type hole 31. The fingertip push rod 52 is connected to one side of the fingertip device head 51, and the fingertip push rod 52 is embedded in the outer push rod groove 32 and the inner push rod groove 41 and reciprocates in the outer push rod groove 32 and the inner push rod groove 41. The other end of the fingertip push rod 52 is provided with a rectangular frame, the fingertip magnet 53 is clamped in the rectangular frame at the tail of the fingertip push rod 52, and the fingertip magnet 53 extends into the magnet groove 42 and reciprocates in the magnet groove 42. The fingertip magnet 53 interacts with the permanent magnet 10 to generate attractive force and repulsive force. In this embodiment, the fingertip magnet 53 is a cylindrical neodymium iron boron magnet.

[0037] Referring to Figure 7The finger tip pressing disc 6 is provided with a finger tip push rod groove 61, a finger tip magnet groove 62, a pressing disc fixing hole 63 and a die hole matching area 64 matched with the seed plate, the finger tip pressing disc 6 is fixed with the inner seed plate 4 through a bolt and rotates with the seed plate shaft 9 in the seed plate shell. The die hole matching area 64 has a certain slope on the edge, which is used to adapt to the finger tip head 51; the pressing disc fixing hole 63 is arranged opposite to the seed plate fixing hole 43 and is used to install a bolt; the finger tip magnet groove 62 is arranged opposite to the magnet groove 42 and is used to adapt to the finger tip magnet 53; the finger tip push rod groove 61 is arranged opposite to the outer push rod groove 32 or the inner push rod groove 41 and surrounds a circular hole structure, which is used to limit the finger tip push rod 52 and prevent the finger tip push rod 52 from jumping out of the outer push rod groove 32 and the inner push rod groove 41.

[0038] The seed enters the seed plate through the feeding port 11 in the seed box, the seed is in the die hole 31, the cooperation of the die hole 31 and the finger tip head 51 completes the seed carrying, the seed carrying area 12 part of the shell has a certain difference with other shell parts, when the die hole 31 of the seed plate and the finger tip head 51 cooperate to carry the seed through the seed carrying area 12, the excess seeds are blocked outside, only the matching part passes through the seed carrying area 12.

[0039] The implementation principle of the embodiment of the application is as follows:

[0040] In use, the inner seed plate 4, the outer seed plate 3, the magnet finger tip device 5 and the finger tip pressing disc 6 are sequentially arranged in the discharging side shell 7 and are fixed through a bolt, finally the feeding side shell 1 is connected with the discharging side shell 7 through a bolt, after the two shells are fixed, the inner seed plate 4, the outer seed plate 3, the magnet finger tip device 5 and the finger tip pressing disc 6 rotate with the seed plate shaft 9.

[0041] In work, the inner seed plate 4, the outer seed plate 3, the magnet finger tip device 5 and the finger tip pressing disc 6 rotate with the seed plate shaft 9 in the shell; the magnet finger tip device 5 reciprocates in the finger tip groove under the action of magnetic force, when the finger tip magnet 53 and the permanent magnet 10 are opposite poles, the magnetic force makes the two magnets attract each other, the magnet finger tip device 5 moves backward in the finger tip groove, the seed enters the die hole 31 in the outer seed plate 3; when the finger tip magnet 53 and the permanent magnet 10 are same poles, the magnetic force makes the two magnets repel each other, the magnet finger tip device 5 moves forward in the finger tip groove, prevents the seed from continuing to enter the die hole 31 and pushes out the excess seeds, only one seed is left in the die hole 31, at the same time, the finger tip head 51 cooperates with the die hole 31 to press the seed and fix the seed in the die hole 31, and drives the seed to rotate in the shell; when the finger tip magnet 53 is opposite poles again, the finger tip device 5 moves backward in the finger tip groove, the cooperation of the finger tip head 51 and the die hole 31 ends, the seed falls into the furrow through the seed dropping port, thus the four links of filling, cleaning, carrying and dropping are completed. When different crops are sowed, only the outer seed plate 3 needs to be replaced, which is simple to operate.

[0042] The embodiments of the present application are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, wherein the same parts are denoted by the same reference numerals. Therefore, any equivalent changes made on the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A magnetic fingertip precision seed metering device, characterized in that, The device includes a seed metering housing, a seed metering disc assembly rotatably disposed within the seed metering housing, a seed metering shaft (9) that drives the seed metering disc assembly to rotate, a fingertip pressure plate (6) connected to the seed metering disc assembly, several magnetic fingertips (5) disposed between the seed metering disc assembly and the fingertip pressure plate (6), and a permanent magnet (10) fixedly connected within the seed metering housing. Seed inlets and outlets are respectively provided on both sides of the seed metering housing. Seed delivery channels are uniformly disposed on the seed metering disc assembly opposite to the magnetic fingertips (5). Under the action of magnetic force, the magnetic fingertips (5) reciprocate towards or away from the permanent magnet (10) to push the seeds into the delivery channels.

2. The magnetic fingertip precision seed metering device according to claim 1, characterized in that, The seed metering device housing includes a feed side housing (1) and a discharge side housing (7) connected to each other. The seed metering shaft (9) is rotatably connected between the feed side housing (1) and the discharge side housing (7). The feed side housing (1) is provided with a feed inlet (11) and a seed carrying area (12) distributed in a fan shape. The permanent magnet (10) is fixed inside the feed side housing (1) and rotatably sleeved on the seed metering shaft (9).

3. A magnetic fingertip precision seed metering device according to claim 2, characterized in that, The permanent magnet (10) is configured as a ring-shaped neodymium iron boron permanent magnet.

4. A magnetic fingertip precision seed metering device according to claim 2 or 3, characterized in that, The seed metering disc assembly includes an outer seed metering disc (3) and an inner seed metering disc (4) arranged coaxially. The outer seed metering disc (3) is fitted and fixed on the outer ring of the inner seed metering disc (4), and the inner seed metering disc (4) is fixedly fitted on the seed metering shaft (9).

5. A magnetic fingertip precision seed metering device according to claim 4, characterized in that, The outer seed tray (3) is set as a ring, and a number of holes (31) are evenly arranged along the circumference of the outer edge facing the feed side shell (1) as seed delivery channels. The holes (31) are provided with an outer push rod groove (32) arranged radially along the outer seed tray (3) on the side near the central axis of the outer seed tray (3).

6. A magnetic fingertip precision seed metering device according to claim 5, characterized in that, The inner seeding disc (4) is set as a ring, and a number of magnetic grooves (42) are evenly arranged along the circumference on the inner edge of the side facing the feed side shell (1). The magnetic groove (42) away from the central axis of the inner seeding disc (4) has an inner push rod groove (41) arranged radially along the inner seeding disc (4). The inner push rod groove (41) and the outer push rod groove (32) are coaxially connected.

7. A magnetic fingertip precision seed metering device according to claim 6, characterized in that, The magnetic fingertip device (5) includes a fingertip head (51), a fingertip push rod (52) connected to one side of the fingertip head (51), and a fingertip magnet (53) disposed at the end of the fingertip push rod (52) away from the fingertip head (51). The fingertip head (51) is movably disposed in the shaped hole (31), the fingertip push rod (52) is movably disposed in the outer push rod groove (32) and the inner push rod groove (41), and the fingertip magnet (53) reciprocates within the magnet groove (42).

8. A magnetic fingertip precision seed metering device according to claim 7, characterized in that, The fingertip pressure plate (6) is provided with a fingertip push rod groove (61) that is adapted to the outer push rod groove (32) and the inner push rod groove (41), a fingertip magnet groove (62) that is opposite to the magnet groove (42), and a shaped hole mating area (64) that is opposite to the shaped hole (31); the fingertip pressure plate (6) is connected to the inner seed metering plate (4) by bolts and rotates in the seed metering device housing with the seed metering shaft (9).

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