JPH0459849B2 - - 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 any residual plowing from occurring between the disk tillage bodies, curved disk-shaped disks are arranged in an approximately figure-eight shape in plan view and are rotatable. The cultivated soil between the disk tillers is tilled, and the cultivated soil is released along the curved surface onto the uncultivated ground on both sides, and this released soil is
There is a structure in which the tilled soil at the bottom of the tiller is reversely tilled by each disk of the disk tiller.

[Problems to be Solved by the Invention] In the above-mentioned conventional configuration, the disk for disposing of residual tillage disposed in the front part is formed in a curved disk shape, so that the disk to be tilled is The rotary shafts of the disk cultivating bodies at the rear of both sides may ride on this soil because they are large and are thrown over the uncultivated soil on both sides. The work by the discs becomes unstable, and it becomes difficult to till the soil to a predetermined depth with each disc, and the pair of discs in the front part and each disc of the disc cultivating body are formed in a disc shape. Since the plowed soil is only guided along the curved surface of the plowed soil, there are problems such as the inversion of the soil may become uncertain.

Therefore, the present invention was developed in view of the above points, and it is possible to promote the reversal of the tilled soil and prevent it from being thrown away to the sides, and also to crush the soil. The purpose is to do so.

[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 the plate-shaped part outside the cut groove is gradually inclined at a predetermined angle from the curved surface of the plate-shaped part inside the cut groove. It is formed by protruding inward.

[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 at the outer rear part of each disk plate in the direction of rotation, and is reversed. promoted,
Therefore, the soil is reliably turned over without being thrown outward to a large extent, and the upper part of the soil is pushed and the turning is promoted, thereby crushing the soil. .

〔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, a connecting portion 6 that is linked to a suspension mechanism of a tractor is provided at the upper front portion and 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 made up of a plurality of curved disk plates 12 that are divided and formed into a substantially fan shape. Mounting hole 1
4 is formed, and this mounting plate portion 13
An engagement recess 15 that engages with the outer side of the rotating shaft 9 is formed at the base end of the rotary shaft 9 . Further, the disk plate 12 is gradually curved inwardly in an arc shape as it reaches the outer part from the mounting plate part 13, and the outer part 16
In other words, an arcuate edge 19 is formed with a large cut in the intersection of the front end edge 17 and the outer edge 18 in the rotational direction, and the rear end is formed in the middle of the other side of the outer side 16. Edge 20
An arcuate groove 21 is formed in the rotation direction,
The rear part of the disk plate 12 in the rotational direction is divided by the kerf 21 into an outer narrow plate-like plate 22 and an inner plate-like part 23. An earth-repellent plate portion 25 is formed which is extruded in an arc shape toward the front side and gradually protrudes inward from the curved surface 24 of the disc 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 portion of the outer narrow plate portion 22 in the rotational direction and the arc portion 19 .

Next, the horizontal portion 7 of the mission case 2
An output shaft 29 is rotatably mounted horizontally at the rear lower part of the
The inner ends of the rotating shafts 31 of the disc cultivating bodies 30 are rotatably connected to both ends of the output shaft 29 via universal joints, and the outer ends of the rotating shafts 31 of the disc cultivating bodies 30 on both sides have bearings. 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, the rotation shaft 31 of the disk cultivating body 30
A plurality of curved disc-shaped disks 35 for continuously tilling and turning the cultivated soil are fixed together through flanges 36. Each disk 35 fixed to the rotating shaft 31 is composed of a plurality of curved disk plates 37 that are divided and formed into a substantially fan shape.
Each disk plate 37 has a plurality of mounting holes 39 formed in a mounting plate portion 38 that is joined to the flange 36, and a base end portion of the mounting plate portion 38 that engages with the outer side of the rotating shaft 31. Engagement recess 40
is formed. Further, the disk plate 37 is gradually curved inwardly in an arc shape as it reaches the outer part from the mounting plate 38, and one corner of the outer part 41 has a front end extension part 42 and an outer edge part 43 in the rotational direction. A largely incised arcuate edge 44 is formed at the intersection where the outer portion 43 intersects with the outer portion 43.
An arcuate groove 46 is formed in the rotational direction from the middle of the other side to the rear end edge 45.
At 6, the rear part of the disk plate 37 in the rotational direction is divided into an outer plate-like part 47 and an inner plate-like part 48, and the outer plate-like part 47 has an arc shape toward the front side in the rotational direction. An earth-repellent plate portion 51 is formed by extruding the disk plate 37 to gradually protrude inward from the curved surface 49 of the disk plate 37 and the curved surface 50 of the inner plate-like portion 48 at a predetermined inclination angle.

The mounting plate portion 38 of each disk plate 37 is
are respectively disposed adjacent to the circumferential side surface of the flange 36, and the engagement recess 40 of each mounting plate 38 is engaged with the outer periphery of the rotating shaft 31. A bolt 52 is inserted into a communication hole of the flange 36 that communicates with the mounting hole 39, and a nut 53 is fastened to the bolt 52 projecting outward from the flange 36. As a result, each disk 35 is configured, and this disk 3
At the adjacent outer periphery of each disk plate 37 that constituted 5,
A substantially triangular recess 55 is formed between the rear end 54 in the rotational direction of the soil-repelling plate portion 51 made of the outer plate-shaped portion 47 and the arcuate edge 44 .

Next, a pair of disks 11 for the above-mentioned residual tillage processing
The output shaft 29 that rotates the rotation shaft 9 of the disk cultivating body 30 and the rotation shaft 31 of the disk cultivating body 30 is
It is operatively connected to the input shaft 5 via a moving medium provided therein.

In the figure, reference numeral 56 denotes a grounding wheel that is horizontally suspended so as to be freely rotatable, 57 is an adjustment arm that adjusts the rotation of the support frame 34, 58 is a protective cover that covers the upper part of the disk 35, and 51 is a ground wheel that is installed between the pair of disks 11. This is a tilling blade for processing leftover tillage.

In this configuration, each connecting portion 6 of the machine frame 1 is connected to the suspension mechanism of the tractor, and the input shaft 5 is connected to the power take-off shaft portion of the tractor via a power transmission shaft. 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 tilled as a lump of a predetermined size by the outer part 16 of the disc plate 12, and this tilled soil is distributed 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. The large pieces of soil that have been plowed are crushed into small chunks, and are not thrown outward in a big way, and are removed from the disc plowing bodies 3 on both sides of the rear.
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, the soil cultivated by the front pair of discs 11 is crushed into small pieces and turned over, so that the rotary shafts 3 of the disc tillers 30 on both rear sides
1 is not pushed up by the soil, so the stability is good, and the tilled soil is tilled as a lump of a predetermined size by the outer part 41 of each working plate 37 on each disc 35 of the rotating shaft 31. Along with being
The upper part of the tilled soil is pushed in the reversal direction by the soil repelling action of the soil repelling plate part 51 that protrudes inward at the rear part of each disc plate 37 in the rotational direction of each disc 35. In addition, the pressing soil repelling action of the soil repellent plate portion 51 causes cracks in the length direction of the soil, and the concave portion 55 in the outer adjacent portion of each disk plate 37 causes soil to be repelled. Cracks are created in the width direction of the soil, so that the soil is turned over without being thrown outward significantly, and is crushed to a smaller size than the plowed size.

〔Effect of the invention〕

According to the present invention, the disk is constructed by arranging and fixing a plurality of curved disk plates divided into approximately fan shapes in a circular shape, so that the disk can be easily formed into a desired shape. If a disk is partially damaged, it is only necessary to replace the part without replacing the entire disk, which is economical. In addition, a cut groove is formed at the rear part of each disk plate in the rotational direction,
By forming a plate-shaped part outside this kerf so as to gradually protrude inward at a predetermined inclination angle, this plate-shaped part pushes the upper part of the tilled soil in the reversal direction. The soil can be reliably turned over, and the upper part of the soil can be reliably prevented from being thrown outward due to being pushed. Can be crushed into small pieces. Therefore, it is suitable as a clearance disk.

[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 rotary disc, Fig. 5 is a plan view of the above, Fig. 6 is a front view of the disc provided in the front part of the above, Fig. 7 is a sectional view of the section taken from line B to B of the above, and Fig. 8 is a It is a perspective view of the disk board same as the above. 31... Rotating shaft, 36... Flange, 35...
Disc, 37... Disc plate, 46... Cut groove,
47...Outer plate-shaped part, 48...Inner plate-shaped part, 50...Curved surface of the inner plate-shaped part.

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 circumferential side of the rotating shaft via flanges, and a cut groove is formed in the rotational direction at the rear part of the plurality of disk plates in the rotational direction. , and a plate-like portion outside the kerf gradually protrudes inward at a predetermined inclination angle from a curved surface of the plate-like portion inside the kerf.