CN105532125A - Roller-type non-tillage sowing telescopic needle hole-forming mechanism - Google Patents

Abstract

The drum-type no-tillage sowing telescopic needle hole-forming mechanism belongs to agricultural seeding machinery; it consists of four parts: a drum, a cam, a hole-making mechanism and a seed-discharging mechanism. The seeds are placed in the seeding mechanism. The seeding mechanism is at the center of the drum. There is a fixed cam inside the drum. This cam has a special contour curve, which can meet the needs of the cam when the hole punching mechanism moves to the lowest point. Extrusion, the mechanism carries out hole punching and sowing operations. When turning over the lowest point, the set return spring can be used to make it recover quickly, achieving the effect of "fast in and fast out", avoiding the disadvantage of dragging straw residues when the traditional roller duckbill planter works, and more Suitable for conservation tillage. The roller provides a certain degree of rigidity for the overall mechanism, plays a role in rolling the straw residue and has good passability, low cost, and meets the requirements of a conservation-oriented society for new products.

Description

Roller type no-tillage sowing telescopic needle hole forming mechanism

technical field

The invention belongs to agricultural seeding machinery, and mainly relates to a drum-type no-tillage sowing telescopic needle hole-forming mechanism.

Background technique

Due to the special operating environment of conservation tillage, the existing no-tillage seeders work by cutting and removing straws. Shearing is to use the knife teeth in the machine tool to chop the straw so that the machine tool can carry out subsequent sowing work. Removal is to use the straw clearing knife to throw the straw residues in the ground to the left side of the forward direction of the machine tool, so as to provide good seed bed conditions for the smooth progress of sowing work. Although these two methods can meet the requirements of conservation tillage to a certain extent, they have the disadvantages of large soil disturbance, many operating procedures, large power consumption and environmental pollution. And what existing hole seeder mainly adopts is the roller duckbill type hole seeder, and the plunger type of radial distribution or the bucket type hole-forming parts of configuration radial distribution on the roller duckbill type hole seeder great majority, under the drive of roller Do cycloidal motion in the plane of the sowing direction. Since a large amount of straw residues cover the surface, when the roller duckbill hole seeder is in operation, when its duckbill is planted in the soil and unearthed, it will drag the straw residues on the surface, resulting in the exposure of the land after sowing, thus failing to achieve protection. In areas without irrigation conditions, the application of such machines may even lead to soil erosion and barren land, making it difficult to guarantee crop yields. Therefore, there are still certain problems in the application of this type of roller duckbill hole seeder in conservation tillage.

Contents of the invention

The purpose of the present invention is to solve the above-mentioned existing problems, and innovatively design a roller-type no-tillage sowing telescopic needle hole-forming mechanism to solve the problem of dragging straw residues on the ground when the existing roller duckbill hole seeder is operating, so that it can Meet the requirements of conservation tillage.

The basic design of the present invention is a drum type no-tillage sowing telescopic needle hole forming mechanism. The assembly consists of four parts: a drum, a cam, a punching mechanism and a seeding mechanism. The drum-type no-tillage seeder is pulled by a tractor, and the ground wheel installed on the frame provides the rotating power of the drum through a chain transmission. During operation, the tractor drives the seeder forward, and the hole-making mechanism inside the drum rotates with the drum. The cam inside the drum and the The central shafts are fixed together, the seeds are placed in the seeding mechanism, and the seeding mechanism is at the center of the drum. There are 16 telescopic hole punching mechanisms evenly distributed radially inside the drum, corresponding to the 16 rectangular through holes evenly arranged on the drum, so that the hole punching mechanism can extend out of the drum to penetrate the straw residue into the soil to form holes and complete the sowing process. . There is a fixed cam inside the drum. This cam has a special contour curve, which can meet the needs of the telescopic needle caving mechanism to move to the lowest point, and the mechanism can perform hole punching and sowing operations through the extrusion of the cam. When turning over the lowest point, the set return spring can be used to quickly recover it to achieve the effect of "fast in and fast out".

The beneficial effect of the invention is that it can realize no-tillage sowing in holes without any treatment on straw residues, and is more suitable for conservation tillage.

Description of drawings

Fig. 1 is a schematic view of the drum structure;

Fig. 2 is a schematic diagram of the cam structure;

Fig. 3 is a schematic diagram of a seeding mechanism;

Fig. 4 is an assembly axonometric view of the drum, the cam and the seeding mechanism;

Fig. 5 is an axonometric view of the punching mechanism;

Fig. 6 is an axonometric view of the telescoping roller cavity forming mechanism;

Figure 7 is an axonometric view of the drum cover;

Figure 8 is a schematic diagram of the overall structure;

Description of part number in the figure:

1. Shift block, 2. Cam, 3. Seed metering mechanism housing, 4. Seed clearing brush, 5. Driving wheel of nesting wheel seeding disc, 6. Digging wheel seeding disc, 7. Seeding fork , 8, roller, 9, spring guide column, 10, runner, 11, movable duckbill opening lever, 12, fixed duckbill, 13, movable duckbill, 14, return spring, 15, roller cover, 16, Hole wheel seed disc driving wheel lever, 17, lower suspension, 18, upper suspension, 19, frame main beam, 20, frame rear beam, 21, flange connector, 22, roller center shaft support column, 23, Ground wheel height adjusting device, 24, ground wheel.

detailed description

Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. The telescopic needle hole forming mechanism assembly of the drum type no-tillage seeder consists of four parts: the drum, the cam, the hole making mechanism and the seeding mechanism.

Frame girder 19 is welded together with frame back beam 20, upper suspension 18 and lower suspension 17 are connected with traction tractor, ground wheel height adjusting device 23 is connected with ground wheel 24, is fixed on the main girder 19 of frame. When working, the tractor pulls the drum-type no-tillage planter forward, and the ground wheel 24 transmits power to the flange connector 21 through a chain drive, and the flange connector 21 is fixedly connected with the drum 8 to drive the drum to rotate.

The central axis of the drum is fixedly connected with the seeding mechanism and does not rotate with the drum. The cylinder 8 and the cylinder cover 15 are connected together by bolts, and the seeds are placed in the seed-discharging mechanism housing 3. During work, the driving wheel lever 16 of the pocket wheel middle disc placed on the cylinder cover 15 will drive with the pocket wheel seed disc. When the wheel 5 touches, the seeds are covered on the nest wheel seeding disk due to the gravity in the seed box, and the nest wheel seed disk driving wheel 5 will drive the nest wheel seed disk 6 to rotate a set angle, and the seeds are discharged When rotating to the lowest point in the seed disc 6, the seed in the socket can be pulled out by the dialing fork 7, so that it falls into the duckbill. When the socket wheel seeding disc 6 rotates through the cleaning brush 4, the cleaning brush 4 will remove redundant seeds outside the socket.

Return spring 14 is enclosed within on the spring guide column 9 and the punching mechanism is evenly distributed in the radial direction of cylinder, and rotates together with cylinder 8. The two ends of the drum central shaft are stuck on the drum central shaft supporting columns 22 on both sides, and the drum central shaft is fixed. The cam 2 and the seeding mechanism are placed inside the cylinder 8, and are fixed on the central axis of the cylinder. Because the designed cam 2 has a special contour curve, when the punching mechanism moves to a specific position, the rotating wheel 10 will contact the cam 2, thereby squeezing it, so that the fixed duckbill 12 and the movable duckbill 13 are compressed The return spring 14 extends out of the drum 8 gradually. In the process of turning to the lowest point, the driving rod 11 will contact the shifting block 1 in the cam 2, and the driving rod 11 will drive the movable duckbill 13 to gradually open it. When moving to the lowest point, the duckbill in the hole punching mechanism fully stretches out of the cylinder 8, penetrates the straw residue and enters the soil to form a hole. At this time, the opening angle of the movable duckbill 13 reaches the maximum value, thereby ensuring that the duckbill in the The seeds fall into the soil, completing the sowing process. When the hole punching mechanism passes through the lowest point, the set return spring 14 will push the hole punching mechanism to the inside of the drum 8, thereby achieving the effect of "fast in and fast out".

Claims (1)

1. A drum-type no-tillage telescopic needle hole-forming mechanism, characterized in that during work, the frame main beam (19) and the frame rear beam (20) are welded together, the upper suspension (18) and the lower suspension (17) Connect with traction tractor, ground wheel height adjusting device (23) is connected with ground wheel (24), is fixed on the main girder (19) of frame. The tractor pulls the drum-type no-tillage planter forward, and the ground wheel (24) transmits power to the flange connector (21) through a chain drive, and the flange connector (21) is fixedly connected with the drum (8) to drive the drum turn. The central axis of the drum is fixedly connected with the seeding mechanism and does not rotate with the drum. The cylinder (8) and the cylinder cover (15) are connected together by bolts, and the seeds are placed in the seed-discharging mechanism housing (3). 16) It will be in contact with the hole wheel seed disk drive wheel (5), and the seeds in the seed box will cover the hole hole wheel seeding disk due to gravity, and the hole hole wheel seed disk drive wheel (5) will drive the hole wheel The seeding disc (6) rotates a set angle, and when the seeds rotate to the lowest point in the seeding disc (6), the dialing fork (7) will push the seeds out of the nest and make them fall into the duckbill middle. When the socket wheel seeding disc (6) rotates through the seed cleaning brush (4), the seed cleaning brush (4) will remove redundant seeds outside the socket. The return spring (14) is enclosed within on the spring guide post (9) and the punching mechanism is evenly distributed in the radial direction of the cylinder, and rotates together with the cylinder (8). The two ends of the drum central shaft are stuck on the drum central shaft support columns (22) on both sides, and the drum central shaft is fixed. The cam (2) and the seeding mechanism are placed inside the cylinder (8), and are fixed on the central axis of the cylinder. Because the designed cam (2) has a special contour curve, when the punching mechanism moves to a specific position, the rotating wheel (10) will contact the cam (2), thereby squeezing it, so that the fixed duckbill ( 12) and movable duckbill (13) compression return spring (14) stretches out cylinder (8) outside gradually. In the process of turning to the lowest point, the movable duckbill opening lever (11) will be in contact with the shift block (1) in the cam (2), and the movable duckbill opening lever (11) will drive the movable duckbill (13) to make It gradually opens. When the movement reaches the lowest point, the duckbill in the hole-making mechanism completely extends out of the drum (8), penetrates the straw residue and enters the soil to form a hole. At this time, the opening angle of the movable duckbill (13) reaches the maximum value, and the sowing is completed. process. When the punching mechanism passes through the lowest point, the set return spring (14) will push the punching mechanism to the inside of the cylinder (8).