JPH0459848B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disc for a disc rotary that plows and inverts cultivated soil as a large lump of soil.

[Conventional technology]

Conventionally, this type of disk rotary has, for example, a disk cultivating body in which a plurality of curved disc-shaped disks are arranged side by side around a rotating shaft, and a disk cultivating body is disposed on both sides, and a disk cultivating body on both sides is provided between the disk cultivating bodies on both sides. In order to prevent a tilling part from occurring between the disc tilling bodies, curved disc-shaped discs are arranged in a substantially figure-eight shape in plan view and are rotatably provided. There is a structure in which the soil between the tillers is tilled, and the soil is then released along the curved surface onto the uncultivated ground on both sides.

[Problem that the invention seeks to solve]

In the above conventional configuration, the disk for processing residual tillage disposed in the front part is formed in the shape of a curved disk, so the soil plowed by this disk is large, and the uncultivated soil on both sides is large. Since the soil is thrown upwards, the rotating shaft of the disc cultivating body at the rear of the surface side may ride on this soil, and in such a case, the work by each disc of the disc cultivating body may become unstable. Another problem is that each disc makes it difficult to till and turn the soil to a predetermined depth.

Therefore, the present invention has been developed in view of the above points, and it promotes the turning of the tilled soil to prevent it from being thrown away to the sides, and also enables the soil to be crushed. The purpose is to

[Means for solving problems]

In the present invention, a plurality of curved disk plates formed in a substantially fan shape are arranged and fixed on the circumferential side of a rotating shaft through flanges so as to have a circular shape as a whole, and the plurality of disk plates are arranged and fixed at the rear in the rotational direction. An arc-shaped cut groove centered on the rotation axis is formed in the rotation direction, and a plate-shaped portion inside the cut groove is formed to gradually protrude inward at a predetermined inclination angle from the curved surface of the disk plate. It is something.

[Effect]

Since the present invention is configured as described above, when the rotary shaft is rotated, the cultivated soil is cultivated as a lump of a predetermined size by the outer circumference of each disk plate arranged and fixed to the rotary shaft in a disk shape. At the same time, this tilled soil is pushed in the reversal direction by the soil-repelling action of the plate-shaped portion that protrudes inward from the curved surface at the inner rear part of each disk plate in the rotating direction. , the lower part of the soil that the plate-shaped part touches is inverted nearly downward, and the upper part of the soil is also promoted to be inverted, so that the soil is largely thrown outward. Not only will it not be crushed, but it will also be crushed by the soil repelling action of the plate-shaped portion.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings.

In the figure, reference numeral 1 denotes a machine frame, and the machine frame 1 is provided with a transmission case 2 that is approximately L-shaped when viewed from the side. An input shaft 5 protrudes forward. Furthermore, connecting portions 6 that are connected to a suspension mechanism of a tractor are provided at the upper front portion and the lower portions of both front sides of the machine frame 1.

Next, the horizontal portion 7 of the mission case 2
A rotary shaft 9 is rotatably provided on both front sides of the rotary shaft 9 via a bearing body 8, and a pair of discs 11 for residual tillage processing are integrally mounted on flanges 10 of the rotary shaft 9 on both sides in a substantially eight-shape in plan view. It is attached.

The pair of disks 11 is composed of a plurality of curved disk plates 12 that are divided and formed into a substantially fan shape. 14
, and an engagement recess 15 that engages with the outer side of the rotating shaft 9 is formed at the base end of the mounting plate 13 . Also, the above disk plate 1
2 is gradually curved inward from the mounting plate part 13 toward the outer part, and at each corner of the outer part 16, that is, the intersection of the front end edge 17 and the outer edge part 18 in the rotational direction is formed. An arcuate edge 19 is formed at the intersection of the two, and an arcuate groove 21 is formed in the rotational direction from the middle of the other side of the outer portion 16 to the rear edge 20. The rear part of the disk plate 12 in the rotational direction is an outer narrow plate-like part 22 and an inner plate-like part 2.
3, and at this inner plate-shaped portion 23,
An earth-repellent plate portion 25 is formed which is extruded in an arc shape toward the front side in the rotational direction and gradually protrudes inward from the curved surface 24 of the disk plate 12 at a predetermined inclination angle.

The mounting plate portion 13 of each disk plate 12 is
are respectively disposed adjacent to the circumferential side surface of the flange 10, and the engagement recesses 15 of the respective mounting plate portions 13 are engaged with the outer circumferential portion of the rotating shaft 9,
Inserting bolts 26 from each mounting hole 14 of each mounting plate portion 13 into the communication hole of the flange 10 communicating therewith,
A nut 27 is fastened to a bolt 26 projecting outward from the flange 10. This constitutes a pair of disks 11, and this disk 1
At the adjacent outer periphery of each disk plate 12 that constituted 1,
A substantially triangular recess 28 is formed between the rear end in the rotational direction of the narrow plate-shaped portion 22 on the outer periphery and the arcuate edge 19 .

Next, the horizontal portion 7 of the mission case 2
An output shaft 29 is rotatably mounted horizontally at the rear lower part,
The inner end of the rotating shaft 31 of the disc cultivating body 30 is rotatably connected to both ends of this output shaft 29 via a universal joint, and a bearing is attached to the outer end of the rotating shaft 31 of the disc cultivating body 30 of this vehicle. The upper part of the suspension body 33 connected through the body 32 is connected to a support frame 34 extending horizontally from both sides of the vertical part 3 of the mission case 2 to the outer rear part. . Further, a plurality of curved disc-shaped discs 35 for continuously reversing tillage are integrally fixed to the rotary shaft 31 via flanges 36. Further, an output shaft 29 that rotates the rotation shaft 9 of the pair of disks 11 for residual tillage processing and the rotation shaft 31 of the disk cultivating body 30 is connected to the input shaft 5 via an interlocking medium provided in the transmission case 2. Linked together.

In addition, in the figure, 37 is a horizontally suspended grounding wheel that can be freely rotated, 38 is an adjustment arm that adjusts the rotation of the support frame 34, 39 is a protective cover that covers the upper part of the disk 35, and 40 is a ground ring between the pair of disks 11. This is a tilling blade for processing leftover tillage.

In this structure, each connecting portion 6 of the machine frame 1 is connected to the horizontal rack mechanism of the tractor, and the input shaft 5 is connected to the power output shaft portion of the tractor via power transmission. When the machine is towed by a tractor and the input shaft 5 is rotated in conjunction with the power of the tractor, the machine is advanced, and the power input from the input shaft 5 is used to dispose of residual tillage in front. The pair of disks 11 and each disk 35 of the disk cultivating body 30 on both rear sides are rotationally driven.

In the front pair of discs 11, the tilled soil is plowed as a lump of a predetermined size by the outer part 16 of each disc plate 12, and this tilled soil is transferred to each disc. Board 12
An earth-repellent plate part 2 consisting of a plate-shaped part 23 that protrudes inward from the curved surface at the inner rear part in the rotation direction.
5 is pushed in the reversal direction by the soil repelling action of the soil repellent plate 25, and the lower part of the soil that the soil repellent plate 25 contacts is reversed near the bottom, and along with this, the upper part of the soil is also promoted to be reversed. In addition, cracks are created in the length direction of the soil by the soil-repelling action of the soil-repellent plate portion 25, and cracks are created in the width direction of the soil by the concave portions 28 in the outer adjacent portions of each disc plate 12. This causes cracks to form and the large pieces of tilled soil to be crushed into small chunks, and to prevent large pieces of soil from being thrown outwards by the disk plowing bodies 3 on both rear sides.
It is released on uncultivated soil within the range that can be treated by 0.

Further, the uncultivated land on which the lumps have been released by the pair of discs 11 is covered by the disc tillers 30 on both sides.
The tillage is continuously reversed by each disc 35 of the . In this case, since the soil cultivated by the pair of front discs 11 is crushed into small pieces and turned over, the rotary shafts 31 of the disc cultivating bodies 30 on both rear sides are pushed up by the soil. Because there is no soil, the stability is good and the soil can be tilled and turned over to a predetermined depth.

〔Effect of the invention〕

According to the present invention, since the disk is constructed by arranging and fixing a plurality of curved disk plates divided into substantially fan shapes in a circular shape, the disk can be easily formed into a desired shape. In case of partial damage, it is only necessary to replace the part without replacing the whole, which is economical. In addition, by forming a plate-shaped part that protrudes inward from the curved surface of the disc plate through a groove at the rear part of each disc plate in the rotational direction, it promotes the reversal of the tilled soil and causes it to move outward. It is possible to reliably prevent large clumps of soil from being thrown into large pieces, and to reliably crush large clumps of soil into smaller clumps. Therefore, it is suitable as a core split disc,
Post-work can be performed stably, smoothly and reliably.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a front view of a disc for a disc rotary, Fig. 2 is a sectional view taken along line A to A of the above, and Fig. 3 is a perspective view of the disc plate of the above. Fig. 4 is a side view of the disc rotary, and Fig. 5 is a plan view of the same.
3... Inner plate-shaped portion, 24... Curved surface of the disk plate.

Claims (1)

[Claims] 1 A plurality of curved disk plates formed in a substantially fan shape are arranged and fixed in a circular shape on the peripheral side of the rotating shaft via flanges, and the plurality of disk plates are formed in the rotation direction at the rear part of the rotation direction. A rotary disk characterized in that a plate-shaped portion inside the kerf protrudes inward from the curved surface of the disk plate.