JPH0459847B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a disc rotary using a plurality of discs for tilling and inverting tilled soil as a large soil lump.

[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 is rotatably disposed on both sides, and the space between the disk cultivating bodies on both sides is In order to prevent a residual plowing portion from occurring between the body ends of the disc cultivating bodies on both sides at the front part, curved disc-shaped discs are arranged in a substantially eight-shape in plan view and are rotatably provided. The disc tills the tilled soil between the disc tillers on both sides, and releases it onto the uncultivated ground on both sides along its curved surface, and the tilled soil at the bottom of this released soil is There is a structure in which the tilling is reversed by each disk of the disk tilling body.

[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 shafts of the disk tillers at the rear of both sides may ride on this soil. In such a case, the work of each disk of the disk tiller becomes unstable, and each disk becomes unstable. This makes it difficult to till the soil to a predetermined depth, and since the pair of disks at the front and each disk of the disk tilling body are formed in a disc shape, the tilled soil is Since it is only guided along the curved surface, the soil
There are problems such as the fact that the reversal effect may be uncertain.

Therefore, the present invention has been made in view of the above points, and it is possible to prevent the tilled soil from being thrown away in large clumps to the outside, and to prevent the soil from being thrown away in large clumps to the outside. It is an object of the present invention to provide a disc rotary capable of reliably and orderly reversing tillage by preventing the rotating shaft of a tiller from being pushed up.

[Means for solving problems]

The present invention rotatably disposes a disc cultivating body in which a plurality of discs for continuously cultivating and inverting soil are arranged side by side on both sides of a machine frame, and a front portion between the inner ends of the disc cultivating bodies on both sides. A pair of disks arranged in an eight-shape in plan view are rotatably provided, and each disk of the disk cultivating body has a plurality of curved disk plates formed in a substantially fan shape arranged and fixed in a circular shape, A cut groove is formed in the rotational direction of the rear portion of the plurality of disc plates in the rotation direction, and a plate-like portion outside the cut groove protrudes inwardly from a plate-like portion inside the cut groove, so that the pair of disk plates In this method, a plurality of curved disk plates formed in a substantially fan shape are arranged and fixed in a circular shape, a cut groove is formed in the rotation direction of the plurality of disk plates, and a plate-shaped portion inside the cut groove is It protrudes inward from the plate-shaped portion outside the kerf.

[Effect]

Since the present invention is constructed as described above, when the pair of front disks is rotated, the tilled soil is tilled as a lump of a predetermined size by the outer circumference of each disk plate that constitutes the disks. At the same time, this tilled soil is pushed in the reversal direction by the soil repelling action of the plate-like parts that protrude inward at the inner rear parts of each disk plate in the rotating direction, and the plate-like parts come into contact with each other. The lower part of the soil is inverted near the bottom, and the inversion of its upper part is promoted, so that the soil is reliably inverted onto the uncultivated soil without being thrown outward too much. At the same time, as the lower part of the soil is pushed, the soil is crushed into small lumps from the upper part so as not to push up the rotating shaft of the disc cultivating body, and the discs on both rear sides are crushed. The soil is continuously tilled by each disc of the tilling body, and the upper part of the soil is pushed inward in the reversal direction by the pushing soil repelling action of the outer plate-shaped part of each disc plate. Earth will definitely be reversed.

〔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. Hole 1
4 is formed, and this mounting plate portion 13
An engaging 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 arc-shaped kerf 21 is formed in the rotation direction,
This kerf 21 divides the rear part of the disk plate 12 in the rotational direction into an outer narrow plate-like part 22 and an inner plate-like part 23 .
An earth-repellent plate part 25 is formed by extruding in an arc shape toward the front side in the rotational direction and gradually protruding inward at a predetermined inclination angle by the curved surface 24 of the disc plate 12.

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 of the outer narrow plate portion 22 in the rotational direction 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 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 part 28, and at one corner of the outer part 41, that is, the front end edge 42 in the rotational direction.
A largely incised arcuate edge 44 is formed at the intersection of the outer edge 43 and the outer edge 43.
3, an arcuate cut groove 46 is formed in the rotational direction from the middle of the other side to the rear end edge 45, and at this cut groove 46, the rear part of the disk plate 37 in the rotational direction is connected to the outer plate-like portion 47 and the inner plate. The outer plate-shaped portion 47 is extruded in an arc shape toward the front side in the rotational direction to form a curved surface 49 of the disk plate 37 and a curved surface 50 of the inner plate-shaped portion 48.
A soil-repellent plate portion 51 is formed that gradually protrudes inward 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 in 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 interlocked and connected to the input shaft 5 via an interlocking 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 output shaft portion of the tractor via the 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 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. The large pieces of soil that have been plowed are crushed into small chunks and are not thrown outward to the disk plowing bodies 30 on both rear sides.
It is released on uncultivated soil to the extent that it can be treated by soil.

Further, the uncultivated land on which the lumps have been released by the pair of disks 11 is covered by the disk 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 disk plate 37 on each disk 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, a plurality of curved disk plates are arranged in a circular shape, each disk of the disk cultivating bodies on both sides and a pair of disks in front between the inner end portions of the disk cultivating bodies on both sides divided into substantially fan shapes. By having a fixed structure, each disk can be easily formed into a desired shape, and if a portion of each disk is damaged, it is only necessary to replace the part without replacing the entire disk. Economical. In addition, each disc plate in the pair of discs has a cut groove at the rear in the rotational direction, and the plate-shaped part inside the cut groove protrudes inward, so that the soil to be tilled is thrown outward to a large extent. The soil can be reliably crushed in small chunks without being crushed, and the rotating shafts of the disc tillers on both sides of the rear are not pushed up by the reverse crushing, making the tilling and reversing work using the disc tillers stable. Plowing can be carried out efficiently and reliably, and each disk plate of each disc of the disc tilling body has a cut groove in the rear part in the direction of rotation, and the plate-shaped part outside the cut groove is protruded inwardly. The soil can be reliably turned over by pushing the upper part of the soil in the direction of reversal. Therefore, the center splitting disk at the front and the plowing disks at the rear on both sides result in extremely favorable tillage. It is capable of lifting and turning work.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a plan view of the rotary disk, Fig. 2 is a side view of the same, Fig. 3 is a front view of the disk in the front part of the above, and Fig. 4 is a plan view of the disk rotary. 5 is a perspective view of the disk plate as above, FIG. 6 is a front view of the disc of the disk cultivating body as above, FIG. 7 is a sectional view of line B to B as above, FIG. 8 FIG. 2 is a perspective view of the same disc plate as above. 9,31...rotating shaft, 11,35...disk, 12,37...disk plate, 21,46...
Cut groove, 22, 47... Outer plate-shaped part, 23, 4
8... Inner plate-shaped part, 24, 49... Curved surface,
30...Disk cultivating body.

Claims (1)

[Scope of Claims] 1. A disc cultivating body in which a plurality of discs are rotatably arranged on both sides and are arranged in parallel to continuously till and invert the soil, and a front portion between the inner ends of the disc cultivating bodies on both sides. and a pair of rotatable disks arranged in an eight-shape in plan view, each disk of the disk cultivating body having a plurality of curved disk plates formed in a substantially fan shape arranged and fixed in a circular shape. , a cut groove is formed in the rotational direction of the rear portion of the plurality of disc plates in the rotation direction, and a plate-like portion outside the cut groove protrudes inwardly from a plate-like portion inside the cut groove, and The disk consists of a plurality of curved disk plates formed into a substantially fan shape arranged and fixed in a circular shape.
A disc rotary characterized in that a kerf is formed in the rotational direction of the plurality of disc plates, and a plate-shaped portion inside the kerf protrudes inwardly than a plate-shaped portion outside the kerf.