Forward and reverse seeding and clearing seeding device

Abstract

The forward seeding and reverse seed clearing and seeding device belongs to agricultural machinery; a seed clearing shaft is installed on the shaft seat through a one-way bearing, a circular groove seed holding shell is fixed on the seed clearing shaft, a driven disk with a pressure spring and a spoon handle is axially movably mounted on the seed clearing shaft, a through-hole seed taking and seed discharging spoon is equipped on the end of the spoon handle, a driving boss is arranged on the circumferential surface of the driven disk, a universal hole for conveying and seed clearing and a telescopic through hole for the through-hole seed taking and seed discharging spoon are opened on the circular groove seed holding shell, a driving shaft is fixed on the bearing seat assembly, the driving shaft is connected to the motor, an active disk is fixed on the driving shaft, a wedge block is fixed on the active disk, and the wedge block and the driving boss are in sliding contact cooperation, or circumferential locking cooperation, or out of contact locking cooperation; the device realizes the combination of the two functions of seeding and seed clearing, and has a novel, unique, reasonable and simple structure, good seed clearing and discharging effect, high efficiency, convenient and fast operation conversion, reliable use and good versatility.

Description

Technical Field

[0001] The invention belongs to agricultural machinery, and mainly relates to a mechanical seed metering device. Background Art

[0002] In order to ensure the purity and singleness of crop varieties, the remaining seeds in the seed meter and seed box must be cleaned up at the end of the sowing operation, especially after the breeding operation of cultivating improved varieties or new varieties is completed, the seed cleaning work is more important. However, since the existing mechanical seed meter only has the function of seeding operation and does not have the function of cleaning the remaining or residual seeds, when the operation is completed or the crop variety is changed, the remaining or residual seeds in the seed meter and seed box are cleaned manually. The high labor intensity, low labor efficiency, high cleaning difficulty and poor cleaning effect are technical problems that need to be solved urgently. Summary of the invention

[0003] The purpose of the present invention is to address the problems existing in the above-mentioned prior art, and to design a forward and reverse seed clearing device in combination with the actual needs for seed cleaning operations when the sowing operation is completed or the crop variety is changed, so as to achieve the goals of dual use in one device, simple and convenient conversion, good seed cleaning effect, high efficiency, saving labor, effort and time.

[0004] The purpose of the invention is achieved in this way: a seed cleaning shaft is installed on the shaft seat so as to be unidirectionally rotatable through a one-way bearing, a circular groove-shaped seed holding shell is fixedly installed on the seed cleaning shaft so as to be circumferentially, radially and axially positioned, a driven disk is mounted on the seed cleaning shaft so as to be circumferentially, radially positioned and axially movably located inside the seed cavity of the circular groove-shaped seed holding shell, a pressure spring is installed on the inner wall surface of the driven disk, the other end surface of the pressure spring is in extrusion contact with the inner wall surface of the bottom end of the circular groove-shaped seed holding shell, a spoon handle is fixedly installed on the lower side of the circumferential edge of the driven disk so as to be located inside the cavity of the circular groove-shaped seed holding shell, and a through-hole seed taking and seed discharging spoon is replaceably and detachably installed on the end of the spoon handle On the outer circumferential surface of the driven disk, N driving bosses are evenly arranged in the circumferential direction, the universal holes for seed delivery and seed cleaning and the telescopic through holes for through-hole seed taking and seed discharging spoons are respectively opened on the upper end part of the circular body wall of the circular groove-shaped seed holding shell and the lower side part of the bottom wall; the driving shaft is fixedly mounted on the bearing seat assembly so as to be rotatable in both directions, the outer end of the driving shaft is connected to the motor, and the active disk is fixedly mounted on the inner end part of the driving shaft, and wedge blocks with the same number as the driving bosses are evenly fixedly mounted on the inner end surface of the active disk in the circumferential direction, and the wedge blocks and the driving bosses are in sliding contact fit or circumferential contact locking fit, or are out of contact locking fit, thereby constituting a forward seed discharging and reverse seed clearing and discharging device.

[0005] The invention realizes the combination of seeding and seed cleaning functions in one device, has a novel, unique, reasonable and simple structure, good seed cleaning effect and high efficiency, simple, convenient and fast conversion between seeding and seed cleaning operations, wide application range, good versatility, reliable use and few faults. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the overall structure of the forward seeding and reverse seed clearing seeding devices;

[0007] Figure 2 It is a schematic diagram of the structure after the shaft seat, bearing seat assembly, seed housing and motor are removed.

[0008] Description of part numbers in the figure:

[0009] 1. Seed clearing shaft, 2. Shaft seat, 3. Circular groove seed housing, 4. Universal hole for seed delivery and seed clearing, 5. Active disk, 6. Wedge block, 7. Driving shaft, 8. Motor, 9. Through-hole seed taking and seed discharging spoon, 10. Pressure spring, 11. Driven disk, 12. Driving boss, 13. Spoon handle, 14. One-way bearing, 15. Bearing seat assembly, 16. Telescopic through hole. DETAILED DESCRIPTION

[0010] The following is a detailed description of the implementation scheme of the invention in conjunction with the accompanying drawings. A forward seeding and reverse seed clearing device, a seed clearing shaft 1 is installed on the shaft seat 2 so as to be unidirectionally rotatable via a one-way bearing 14, a circular groove-shaped seed holding shell 3 is fixedly mounted on the seed clearing shaft 1 in a circumferentially, radially and axially positioned manner, a driven disk 11 is mounted on the seed clearing shaft 1 in a circumferentially, radially positioned and axially movable manner at a position inside the seed cavity of the circular groove-shaped seed holding shell 3, a pressure spring 10 is mounted on the inner wall surface of the driven disk 11, and the other end surface of the pressure spring 10 is in extrusion contact with the inner wall surface of the bottom end of the circular groove-shaped seed holding shell 3, a spoon handle 13 is fixedly mounted on the lower side of the circumferential edge of the driven disk 11 in a position inside the cavity of the circular groove-shaped seed holding shell 3, and a through-hole seed taking and seed discharging spoon 9 is replaceable and removable. It is mounted on the end of the spoon handle 13, and N driving bosses 12 are evenly distributed in the circumferential direction on the outer circumferential surface of the driven disk 11. The universal hole 4 for seed delivery and seed cleaning and the telescopic through hole 16 for the through-hole seed taking and seed discharging spoon 9 are respectively opened on the upper end of the circular body wall and the lower side of the bottom wall of the circular groove-shaped seed holding shell 3; the driving shaft 7 is fixedly mounted on the bearing seat assembly 15 so as to be rotatable in both directions, the outer end of the driving shaft 7 is connected to the motor 8, and the active disk 5 is fixedly mounted on the inner end of the driving shaft 7, and the wedge blocks 6 equal in number to the driving bosses 12 are evenly distributed in the circumferential direction and fixedly mounted on the inner end surface of the active disk 5, and the wedge blocks 6 and the driving bosses 12 are in sliding contact fit or circumferential contact locking fit, or are out of contact locking fit.

[0011] During sowing operation, the motor 8 rotates in the forward direction through the driving shaft 7 to drive the active disk 5 to rotate in the forward direction. When the wedge-shaped inclined surface of the wedge block 6 on the active disk 5 contacts the driving boss 12 on the driven disk 11, the circumferential thrust generated by it passes through the one-way bearing 14 in the seed cleaning shaft 1 and the shaft seat 2, and the seed cleaning shaft 1 and the driven disk 11 do not rotate. At the same time, the axial thrust of the wedge-shaped inclined surface of the wedge block 6 on the driven disk 11 and the reverse thrust of the pressure spring 10 make the driven disk 11 drive the spoon handle 13 and the through-hole seed taking and seed discharging spoon 9 on the seed cleaning shaft 1 to reciprocate and extend or retract from the telescopic through hole 16 on the circular groove-shaped seed holding shell 3. When the through-hole seed taking and seed discharging spoon 9 is retracted, the filling of seeds from the circular groove-shaped seed holding shell 3 is completed, and when it is extended, the discharging of seeds by the through-hole seed taking and seed discharging spoon 9 is completed.

[0012] During the seed cleaning operation, the reverse rotation of the motor 8 drives the wedge block 6 to rotate in the reverse direction through the drive shaft 7 and the active disk 5. At the moment when the wedge block 6 is out of contact with the drive boss 12, the driven disk 11 moves rapidly toward the active disk 5 on the seed cleaning shaft 1 under the thrust of the pressure spring 10. When the end face of the drive boss 12 is locked and in contact with the wedge block 6, the reverse rotation driving force of the driven disk 11 causes the seed cleaning shaft 1 and drives the fixed circular groove seed housing 3 to rotate in the reverse direction under the support of the shaft seat 2 and the one-way bearing 14, and the input and seed cleaning universal hole 4 run to the bottom to complete the seed cleaning operation in the seed meter. At this time, the driven disk 11 does not make axial movement on the seed cleaning shaft 1. Rotating the circular groove seed housing 3 multiple times can complete the removal of all residual seeds in the seed box.

Claims

1. A forward seeding and reverse seed clearing device, characterized in that: A seed cleaning shaft (1) is installed on the shaft seat (2) via a one-way bearing (14) so ​​as to be unidirectionally rotatable. A circular groove-shaped seed holding shell (3) is fixedly mounted on the seed cleaning shaft (1) in a circumferentially, radially and axially positioned manner. A driven disk (11) is mounted on the seed cleaning shaft (1) in a circumferentially, radially positioned and axially movable manner at a position inside the seed cavity of the circular groove-shaped seed holding shell (3). A pressure spring (10) is mounted on the inner wall surface of the driven disk (11). The other end surface of the pressure spring (10) is in extrusion contact with the inner wall surface of the bottom end of the circular groove-shaped seed holding shell (3). A spoon handle (13) is fixedly mounted on the lower side of the circumferential edge of the driven disk (11) in a position inside the cavity of the circular groove-shaped seed holding shell (3). A through-hole seed taking and seed discharging spoon (9) is replaceably and detachably mounted on the spoon handle (13). On the end, N driving bosses (12) are evenly distributed along the circumferential direction on the outer circumferential surface of the driven disk (11), and the universal hole (4) for seed feeding and seed cleaning and the telescopic through hole (16) of the through hole seed taking and seed discharging spoon (9) are respectively opened on the upper end of the circular body wall and the lower side of the bottom wall of the circular groove-shaped seed holding shell (3); the driving shaft (7) is fixedly mounted on the bearing seat assembly (15) so as to be rotatable in both directions, the outer end of the driving shaft (7) is connected to the motor (8), and the active disk (5) is fixedly mounted on the inner end of the driving shaft (7), and wedge blocks (6) equal in number to the driving bosses (12) are evenly distributed along the circumferential direction and fixedly mounted on the inner end surface of the active disk (5), and the wedge blocks (6) and the driving bosses (12) are in sliding contact fit or circumferential contact locking fit, or are out of contact locking fit.

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