Single-hole single-grain collection and tilting type rice precision seed metering device

Abstract

The single-hole single-grain centralized tilting type precision rice seeding device belongs to agricultural machinery; a cross-shaped frame is rotatably installed on a limit control sleeve, a closed-loop zigzag groove is arranged on the outer surface of the limit control sleeve, a seed taking plate with a plurality of conical seed taking blind holes is rotatably inserted on the cross-shaped frame, a crank shaft inserted in the closed-loop zigzag groove is fixedly connected to the seed taking plate, a seed box is fixedly arranged above the seed taking plate, a push rod, a push-pull plate, a tension spring, a connecting rod and a cover plate with a seed dropping hole and a seed blocking plate are arranged on the seed box with a seed leakage hole, and a seed guide tube assembly is fixedly arranged at the lower part of the seed taking plate; the device adopts the composite motion of revolution and rotation of the seed taking plate with a plurality of conical seed taking blind holes to realize the centralized dumping of the rice single-grain filling hole and complete the centralized seeding operation, and has the characteristics of novel, unique and reasonable structure, high seeding accuracy, good operation quality and reliable use.

Description

Technical Field

[0001] The invention belongs to agricultural machinery, and mainly relates to a precision seed metering device used for direct seeding of rice. Background Art

[0002] The dry direct seeding agronomic technology of rice is one of the rice planting methods. Compared with the rice transplanting or rice broadcasting planting methods, it does not require the rice seedling raising process, has many advantages such as low production cost, short production operation cycle, labor saving, time saving and labor saving, etc. This method has been used to this day. In recent years, seeding devices specially adapted to the dry direct seeding of rice have been developed and applied in small areas. However, with the improvement of agronomic technology requirements, the above existing seeding devices cannot meet the requirements of the dry direct seeding of rice precision seeding operations, and the seeding accuracy needs to be improved. Summary of the invention

[0003] The purpose of the present invention is to address the problems existing in the above-mentioned prior art, combine with the actual needs of rice dry direct seeding precision seeding operations, and study and design a single-hole single-grain collecting and tilting rice precision seeding device, so as to achieve high accuracy of rice dry direct seeding precision seeding and adapt to and meet the requirements of rice dry direct seeding precision seeding operations.

[0004] The purpose of the invention is achieved in this way: a cross-shaped frame is rotatably mounted on a fixed limit control sleeve, a closed-loop zigzag groove is provided on the outer surface of the wall of the limit control sleeve in the circumferential direction, a seed taking plate with a plurality of conical seed taking blind holes is rotatably inserted on the cross-shaped frame, a crank shaft is fixed on the inner end of the seed taking plate, and the inner end of the crank shaft can be slidably inserted into the closed-loop zigzag groove on the limit control sleeve; a seed box is fixedly arranged above the seed taking plate, a seed leakage hole is provided on the bottom plate of the seed box, a cover plate with a seed dropping hole is movably mounted on the lower side of the bottom plate of the seed box, and a reciprocating hinge is provided on the inner wall of the seed box. A push-pull plate is installed, the lower end of which is hinged to the cover plate through a connecting rod, a push rod is movably mounted on the inner end wall of the seed box, the outer end of the push rod is hinged to the upper end of the push-pull plate, the inner end of the push rod is in contact and displacement cooperation or out of contact cooperation with the cross-shaped frame, a seed blocking plate is fixedly installed in the seed box at the outer side of the push-pull plate, the two ends of the tension spring are respectively connected to the lower side of the push-pull plate and the lower side of the seed blocking plate; the seed guide tube assembly is fixedly mounted at the lower part of the seed taking plate; the seed dropping hole on the cover plate connects the seed leakage hole on the bottom plate of the seed box with the conical seed taking blind hole on the seed taking plate, and the cover plate blocks the connection between the seed leakage hole and the conical seed taking blind hole, thereby constituting a single-hole single-grain collecting and tilting type rice precision seeding device.

[0005] The invention adopts a seed taking plate with multiple conical seed taking blind holes to cooperate with the seed box to complete seed taking along with the revolution of a cross-shaped frame. The rotation of the seed taking plate on the cross-shaped frame enables the single seeds filled in the multiple conical seed taking blind holes to be concentratedly dumped into the seed guide tube assembly to complete centralized seeding. The invention has the characteristics of novel, unique and reasonable structure, high seeding accuracy, good operation quality and reliable operation, and provides technical support for the promotion and application of agronomic technology of precision seeding of dry direct seeding of rice. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the overall structure of a single-hole single-grain collecting and tilting type rice precision seed metering device;

[0007] Figure 2 yes Figure 1 A top view of

[0008] Figure 3 yes Figure 2 A-A partial cross-sectional view;

[0009] Figure 4 It is a schematic diagram of the planar expansion structure of the limit control sleeve.

[0010] Description of part numbers in the figure:

[0011] 1. Seed guide tube assembly, 2. Seed plate, 3. Conical seed blind hole, 4. Seed box, 5. Cross frame, 6. Closed ring broken line groove, 7. Limit control sleeve, 8. Crank shaft,

[0012] 9. Push rod, 10. Seed leakage hole, 11. Push-pull plate, 12. Seed drop hole, 13. Cover plate, 14. Tension spring, 15. Connecting rod, 16. Seed blocking plate. DETAILED DESCRIPTION

[0013] The following is a detailed description of the implementation scheme of the invention in conjunction with the accompanying drawings. A single-hole single-grain collecting and tilting type precision seeding device for rice, wherein a cross-shaped frame 5 is rotatably mounted on a fixed limit control sleeve 7, a closed-loop broken-line groove 6 is provided on the outer surface of the wall of the limit control sleeve 7 in the circumferential direction, a seed taking plate 2 with a plurality of conical seed taking blind holes 3 is rotatably inserted on the cross-shaped frame 5, a crank shaft 8 is fixed on the inner end of the seed taking plate 2, and the inner end of the crank shaft 8 can be slidably inserted into the closed-loop broken-line groove 6 arranged on the limit control sleeve 7; a seed box 4 is fixedly arranged at the upper part of the seed taking plate 2, a seed leakage hole 10 is provided on the bottom plate of the seed box 4, a cover plate 13 with a seed dropping hole 12 is movably mounted on the lower side of the bottom plate of the seed box 4, and a hinge 8 is provided on the inner wall of the seed box 4 so as to swing back and forth. A push-pull plate 11 is installed in a connected manner, and the lower end of the push-pull plate 11 is hingedly connected to the cover plate 13 through a connecting rod 15. A push rod 9 is movably mounted on the inner end wall of the seed box 4. The outer end of the push rod 9 is hingedly connected to the upper end of the push-pull plate 11, and the inner end of the push rod 9 is in contact and displacement cooperation or out of contact cooperation with the cross frame 5. A seed blocking plate 16 is fixedly installed in the seed box 4 at the outer side of the push-pull plate 11, and the two ends of the tension spring 14 are respectively connected to the lower side of the push-pull plate 11 and the lower side of the seed blocking plate 16; the seed guide tube assembly 1 is fixedly mounted at the lower part of the seed removal plate 2; the seed dropping hole 12 on the cover plate 13 connects the seed leakage hole 10 on the bottom plate of the seed box 4 with the conical seed removal blind hole 3 on the seed removal plate 2, and the cover plate 13 blocks the connection between the seed leakage hole 10 and the conical seed removal blind hole 3.

[0014] When in operation, the external rotating power drives the cross-shaped frame 5 to rotate on the limit control sleeve 7 to realize the revolution of the seed taking plate 2. The revolving seed taking plate 2 realizes self-rotation under the control of the crank shaft 8 and the closed ring broken line groove 6. At the same time, the cross-shaped frame 5 is in contact with or out of contact with the push rod 9. Under the cooperation of the tension spring 14, the reciprocating push rod 9 reciprocates and pushes the cover plate 13 on the lower part of the bottom plate of the seed box 4 through the connecting rod 15. When the seed leakage hole 10 on the bottom of the seed box 4 is opened, the seed leakage hole 10 on the bottom of the seed box 4 is opened. When the seeding hole 12 on the cover plate 13 overlaps with the conical seeding blind hole 3 on the seeding plate 2, a seed in the seed box 4 falls into a conical seeding blind hole 3, and the seeding plate 2 starts to rotate as the cross-shaped frame 5 continues to revolve, and the seeding plate 2 gradually turns from the horizontal state during seeding to the vertical seeding state. At this time, the seeds in the multiple conical seeding blind holes 3 are discharged through the seed guide tube assembly 1, completing the precision sowing operation of the multiple conical seeding blind holes 3 on the seeding plate 2 to dump the seeds. Repeat the cycle in sequence and continuously operate.

Claims

1. A single-hole single-grain collecting and tilting type rice precision seed metering device, characterized in that: A cross-shaped frame (5) is rotatably mounted on a fixed limit control sleeve (7), a closed-loop zigzag groove (6) is provided on the outer surface of the wall of the limit control sleeve (7) in the circumferential direction, a seed taking plate (2) with a plurality of conical seed taking blind holes (3) is rotatably inserted on the cross-shaped frame (5), a crank shaft (8) is fixed on the inner end of the seed taking plate (2), and the inner end of the crank shaft (8) can be slidably inserted into the closed-loop zigzag groove (6) arranged on the limit control sleeve (7); a seed box (4) is fixedly arranged at the upper part of the seed taking plate (2), a seed leakage hole (10) is provided on the bottom plate of the seed box (4), a cover plate (13) with a seed dropping hole (12) is movably mounted on the lower side of the bottom plate of the seed box (4), and a push-pull plate (11) is hingedly mounted on the inner wall of the seed box (4) so ​​as to swing back and forth, the push-pull plate (11) The lower end of the plate (11) is hingedly connected to the cover plate (13) through a connecting rod (15), and a push rod (9) is movably mounted on the inner end wall of the seed box (4). The outer end of the push rod (9) is hingedly connected to the upper end of the push-pull plate (11), and the inner end of the push rod (9) is in contact and displacement cooperation or out of contact cooperation with the cross frame (5). A seed blocking plate (16) is fixedly installed in the seed box (4) at the outer side of the push-pull plate (11), and a tension spring ( The two ends of the cover plate (14) are respectively connected to the lower side of the push-pull plate (11) and the lower side of the seed retaining plate (16); the seed guide tube assembly (1) is fixedly mounted at the lower part of the seed taking plate (2); the seed dropping hole (12) on the cover plate (13) connects the seed leakage hole (10) on the bottom plate of the seed box (4) with the conical seed taking blind hole (3) on the seed taking plate (2), and the cover plate (13) blocks the connection between the seed leakage hole (10) and the conical seed taking blind hole (3).

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