Screw-driven reciprocating sliding precision seed meter

Abstract

The spiral-driven reciprocating sliding precision seed meter belongs to agricultural machinery; the seed box is installed on the upper end of the device frame, and a bidirectional lead screw and a seed protection plate are installed in parallel on the inner side of the device frame and below the seed box, the bidirectional nut is mounted on the bidirectional lead screw, and the motor fixed on the side of the device frame is connected with the bidirectional lead screw, a seed guide through hole is opened on the seed protection plate, and a seed filling plate with a seed filling through hole is installed on the side of the seed protection plate in parallel and slidably, and the two ends of the connecting drive shaft are respectively hinged with the bidirectional nut and the seed filling plate, the left and right seed delivery pipes are respectively installed on the bottom of the seed box, and a seed guide pipe connected with the seed guide through hole is installed on the inner side of the device frame and below the seed protection plate, and a furrow opener is installed on the bottom end of the seed guide pipe; the structural design of this device is scientific, reasonable, novel and unique, which breaks and changes the design concept of traditional seed metering devices, has good operating effect, high quality, stable operation and reliable use.

Description

Technical Field

[0001] The invention belongs to agricultural machinery, and mainly relates to a reciprocating sliding precision seeding device driven by a bidirectional lead screw. Background Art

[0002] The seed meter is an important operating part of the seeding machine, which directly affects and determines the quality and efficiency of the seeding operation. In recent years, various types of mechanical seed meters, such as the outer groove wheel seed meter, the hole wheel seed meter, the spoon wheel seed meter, and the finger clamp seed meter, have played an important role in the seeding operation in different regions according to the agronomic requirements and the characteristics of crop seeds, and have promoted the improvement of the level of agricultural mechanization. In recent years, with the development and improvement of agricultural science and technology, agricultural production urgently needs the successful development of new seed meters with better operating performance, higher efficiency, more novel structure, and unique innovation, so as to provide agricultural users with more machine models to choose from and better meet the needs of agricultural production operations. Summary of the invention

[0003] The purpose of the invention is to develop a spiral-driven reciprocating sliding precision seed metering device based on the actual needs of agricultural production operations, so as to achieve the goals of unique, reasonable, novel structure, good operation quality, high operation efficiency and reliable use.

[0004] The purpose of the invention is achieved in this way: a seed box is installed on the upper end of the frame, a bidirectional lead screw and a seed protection plate are installed in parallel with each other on the inner side of the frame and below the seed box, a bidirectional nut is installed on the bidirectional lead screw so as to be reciprocatingly axially movable, an electric motor is fixed on the side of the frame, the motor is connected to the bidirectional lead screw, a seed guide through hole is provided in the middle of the seed protection plate, a seed filling plate is installed on the upper side of the seed protection plate so as to be slidable in parallel with the axial direction of the bidirectional lead screw, and the left and right sides of the seed filling plate are mutually fixed. N seed filling holes are symmetrically and evenly distributed, and both ends of the connecting drive shaft are hingedly connected to the bidirectional nut and the seed filling plate respectively. A left seed delivery tube and a right seed delivery tube are respectively installed on the bottom of the seed box. The left seed delivery tube and the right seed delivery tube are respectively overlapped and connected with the N seed filling holes on the left side and the N seed filling holes on the right side of the seed filling plate or matched with each other in a staggered closed manner. A seed guide tube is installed on the inner side of the device frame, below the seed protection plate, and is connected with the seed guide holes. A furrow opener is installed on the bottom end of the seed guide tube, thereby constituting a spirally driven reciprocating sliding precision seed metering device.

[0005] The invention adopts the cooperation of an actively rotating bidirectional lead screw and a bidirectional nut, and drives a reciprocating linear motion structure of a seed filling plate with a seed filling through hole through a connected driving shaft, thereby realizing the seed filling operation in the seed box through the left and right seed feeding tubes into the seed filling through holes on the seed filling plate in sequence, and with the cooperation of the seed protection plate, the seeds in the seed filling through holes are sequentially discharged into the seed furrows opened by the furrow opener using the seed guide tubes. The invention has the characteristics of scientific and reasonable structural design, uniqueness, novelty, good operating effect, high quality, stable operation, and reliable use, and provides a new type of structural seeding device for agricultural users to choose from. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the overall structure of a spiral-driven reciprocating sliding precision seed metering device;

[0007] Figure 2 yes Figure 1 Left view of

[0008] Figure 3 It is a schematic diagram of the structure of the seed filling plate;

[0009] Figure 4 It is a schematic diagram of the structure of the seed protection plate;

[0010] Figure 5 It is a three-dimensional schematic diagram of the overall structure of a spiral-driven reciprocating sliding precision seed metering device.

[0011] Description of part numbers in the figure:

[0012] 1. Seed box, 2. Device frame, 3. Motor, 4. Seed guide tube, 5. Furrow opener, 6. Seed guide hole, 7. Connecting drive shaft, 8. Bidirectional nut, 9. Left seed transport tube, 10. Seed protection plate, 11. Seed filling plate, 12. Seed filling hole, 13. Bidirectional screw, 14. Right seed transport tube. DETAILED DESCRIPTION

[0013] The following is a detailed description of the implementation scheme of the invention in conjunction with the accompanying drawings. A spiral-driven reciprocating sliding precision seed metering device, a seed box 1 is installed on the upper end of a frame 2, a bidirectional lead screw 13 and a seed protection plate 10 are installed parallel to each other on the inner side of the frame 2 and below the seed box 1, a bidirectional nut 8 is installed on the bidirectional lead screw 13 in a reciprocating axially movable manner, an electric motor 3 is fixed on the side of the frame 2, the electric motor 3 is connected to the bidirectional lead screw 13, a seed guide hole 6 is provided in the middle of the seed protection plate 10, a seed filling plate 11 is installed on the upper side of the seed protection plate 10 in a sliding manner parallel to the axial direction of the bidirectional lead screw 13, and the seed filling plate 11 is installed on the seed filling plate 11 N seed filling through holes 12 are symmetrically and evenly distributed on the left and right sides of the device, and both ends of the connecting drive shaft 7 are hinged to the two-way nut 8 and the seed filling plate 11 respectively. A left seed delivery tube 9 and a right seed delivery tube 14 are respectively installed on the bottom of the seed box 1. The left seed delivery tube 9 and the right seed delivery tube 14 are respectively overlapped and connected with the N seed filling through holes 12 on the left side and the N seed filling through holes 12 on the right side of the seed filling plate 11, or staggered and closed cooperation. A seed guide tube 4 is installed on the inner side of the frame 2, below the seed protection plate 10, and is interconnected with the seed guide through holes 6, and a furrow opener 5 is installed on the bottom end of the seed guide tube 4.

[0014] During operation, the motor 3 drives the bidirectional screw 13 to rotate, so that the bidirectional nut 8 located at the middle part of the bidirectional screw 13 moves to the right on the bidirectional screw 13, and the lateral movement of the bidirectional nut 8 drives the seed filling plate 11 to move to the right under the support and cooperation of the seed protection plate 10 through the connecting drive shaft 7. At this time, the N seed filling holes 12 located on the right side of the seed filling plate 11 are not filled with seeds and run empty, while the N seed filling holes 12 located on the left side of the seed filling plate 11 start from the rightmost seed filling hole 12 and the seeds in the seed box 1 are filled into the N seed filling holes 12 on the left side of the seed filling plate 11 by the left seed delivery pipe 9 in sequence. When the N seed filling holes 12 on the left side of the seed filling plate 11 from right to left successively run to the overlapping position above the seed guide hole 6 on the middle part of the seed protection plate 10, the seeds are sown into the seed furrow through the seed guide pipe 4 and the furrow opener 5. At this time, the bidirectional nut 8 runs to the bidirectional screw 13 The rightmost end moves from the right end to the left end by itself. The N seed-filling holes 12 on the left side of the seed-filling plate 11, which are already empty of seeds, are filled with seeds from the left end hole to the right end hole in sequence through the left seed delivery tube 9 and move transversely with the seeds under the cooperation of the seed protection plate 10 to prepare for the rightward movement again. At the same time, the N seed-filling holes 12 on the right side of the seed-filling plate 11 are filled with seeds from the left end hole to the right end hole through the right seed delivery tube 14. When the seed-filling holes 12 filled with seeds run to the overlapping part above the seed guide hole 6, the seed-filling operation is completed; thereafter, the above operation is repeated, and the N seed-filling holes 12 on the left side of the seed-filling plate 11 that have been filled with seeds cooperate with the seed guide hole 6 in sequence to carry out the seed-filling operation. At this time, the N seed-filling holes 12 on the right side of the seed-filling plate 11 are filled with seeds in the seed box 1 through the right seed delivery tube 14 in sequence, and run to the right side with seeds to prepare for the next sowing operation. The operation is cyclically continuous.

Claims

1. A spiral driven reciprocating sliding precision seed metering device, characterized in that: A seed box (1) is mounted on the upper end of a frame (2); a bidirectional lead screw (13) and a seed protection plate (10) are mounted parallel to each other on the inner side of the frame (2) and below the seed box (1); a bidirectional nut (8) is mounted on the bidirectional lead screw (13) in a reciprocating axially movable manner; an electric motor (3) is fixedly mounted on the side of the frame (2); the electric motor (3) is connected to the bidirectional lead screw (13); a seed guide through hole (6) is provided in the middle of the seed protection plate (10); a seed filling plate (11) is mounted on the upper side of the seed protection plate (10) in a manner parallel to the axial direction of the bidirectional lead screw (13); and a seed filling plate (11) is mounted on the left and right sides of the seed filling plate (11). N seed filling through holes (12) are evenly distributed and symmetrically arranged, and the two ends of the connecting drive shaft (7) are respectively hingedly connected to the bidirectional nut (8) and the seed filling plate (11). A left seed delivery pipe (9) and a right seed delivery pipe (14) are respectively installed on the bottom of the seed box (1). The left seed delivery pipe (9) and the right seed delivery pipe (14) are respectively connected to the N seed filling through holes (12) on the left side and the N seed filling through holes (12) on the right side of the seed filling plate (11) in an overlapping manner or in a staggered closed manner. A seed guide pipe (4) is installed on the inner side of the device frame (2) and below the seed protection plate (10) so as to be connected to the seed guide through hole (6), and a furrow opener (5) is installed on the bottom end of the seed guide pipe (4).

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