JPH0481402B2 - - 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 tilled soil as a relatively 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 on both sides is placed between the disk cultivating bodies on both sides. In order to prevent any remaining plowing from occurring between the disk cultivating bodies, curved disc-shaped disks are arranged in an approximately figure eight shape in plan view and are rotatably provided. There is a structure in which the tilled soil is tilled between the tillers, and 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 and the disks in the disk cultivating body on both rear sides are formed in a curved disk shape, so they cannot be inserted into hard tilled soil. Moreover, if raw straw is scattered, the tilled soil will not be engulfed easily, and if the periphery of the disk becomes worn, the entire disk must be replaced, which is uneconomical. Since the soil is plowed as a lump, there are problems such as insufficient crushing and inversion of the soil.

Therefore, the present invention has been developed in view of the above points, and has good penetration and penetration into tilled soil, reliable tillage reversal of soil, and economical since only worn parts can be replaced. The purpose is to provide a disk that can be used.

[Means for solving problems]

The present invention provides a plurality of sets of tillage reversing plates, each consisting of a main pawl and an auxiliary pawl formed independently of each other via flanges on the circumferential side of a rotating shaft, arranged in a circular shape, which can be attached and detached. The main layer of each set of tillage reversing plates is curved toward the rear side in the direction of rotation, and an engaging recess is formed between the attachment portion to the flange and the toe, and the auxiliary The pawl is engaged within the engagement recess of the main pawl.

[Effect]

Since the present invention is configured as described above, when the rotary shaft is rotated, the cultivated soil is moved to a predetermined size by the main pawls on the outer periphery of each tillage reversing plate which is arranged and fixed in a circular shape to the rotary shaft. Along with being cultivated as a lump,
This tilled soil is pushed and reversed by the auxiliary claws on the inner side of each tillage reversal plate, which promotes the reversal and allows the soil to be thrown outward to a large extent. do not have.

〔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 in side view. The input shaft 5 is projected 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, a rotary shaft 8 is rotatably provided on both front sides of the horizontal part of the transmission case 2 via a bearing body 7, and a pair of rotary shafts 8 for processing residual tillage are provided on flanges 9 of the rotary shaft 8 on both sides. The disks 10 are arranged in a substantially eight-shape shape when viewed from above and are detachably attached.

Further, an output shaft 11 is rotatably mounted horizontally at the rear lower part of the horizontal part of the transmission case 2, and the inner end of the rotating shaft 13 of the disc cultivating body 12 is connected to both ends of the output shaft 11 by a universal joint. A hanging support 1 is rotatably connected to the rotary shaft 13 of the disk cultivating body 12 on both sides thereof via a bearing body.
The upper part of the transmission case 4 is connected to a support frame 15 that extends horizontally from both sides of the vertical part 3 of the mission case 2 to the outer rear part. Further, a plurality of discs 16 for continuously tilling and reversing the cultivated soil are detachably attached to the rotary shaft 13 via flanges 17. The output shaft 11 that rotates the rotation shaft 8 of the pair of disks 10 for residual tillage processing and the rotation shaft 13 of the disk tillage body 12 is connected to the input shaft 5 via an interlocking medium provided in the transmission case 2. Linked together.

The pair of tillage disks 10 and the disks 16 of the disk tiller 12 each have flanges 9 fixed to the circumferential sides of the rotation shafts 8 and 13,
A plurality of sets, that is, four sets of tillage reversing plates 20 each including a main pawl 18 and an auxiliary pawl 19 are arranged in a circular shape adjacent to each other in sequence on the circumferential side of the plowing plate 17. It is removably attached.

The main pawl 18 of each of the tillage reversal plates 20 has a narrow plate-shaped body 22 curved toward the rear side in the direction of rotation, and is approximately between the attachment portion 23 for the flanges 9, 17 and the toe 24. A semicircular engagement recess 25 is formed, and the mounting portion 23 is formed with a communicating hole 26 for inserting a bolt that communicates with the mounting holes of the flanges 9 and 17. It is formed to have a curved portion 28 which is curved in an arc in the side portion from the bending portion 27 in the middle of the rear to the toe 24.

In addition, the auxiliary claws 19 on each of the above-mentioned tillage reversal plates 20
is engaged in the engagement recess 25 of the main pawl 18 and formed into a substantially fan shape, and the flanges 9, 1
The bent portion 30 of the narrow plate-shaped attachment portion 29 relative to 7
An upper plate portion 31 on the rear side in the rotational direction is formed of a dirt-repellent plate portion 32 that gradually protrudes inward from the mounting portion 29, and the mounting portion 29 has bolts communicating with the mounting holes of the flanges 9 and 17. An insertion hole 33 for insertion is formed, and an engagement recess 3 that engages with the rotating shafts 8, 13 is formed at the inner end of the attachment portion 29.

Therefore, the auxiliary claw 19 is formed with a thickness equal to or thinner than the thickness of the main claw 18,
At least a portion 36 of the main pawl 18 connected to the outer edge 35 of the engagement recess 25 does not protrude beyond the surface 37 of the main pawl 18 . A recessed portion 38 cut inward is formed between adjacent outer edge portions of each tillage reversal plate 20.

In the figure, 39 is a rotatable grounding wheel, and 40 is an adjustment arm for adjusting the rotation of the support frame 15.

In this structure, 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 of the tractor via a power transmission shaft. Then, 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 move the remaining tillage in front. The pair of disks 10 and each disk 16 of the disk cultivating bodies 12 on both rear sides are rotationally driven.

In the front pair of discs 10, the main claws 18 on the outer sides of the respective tillage reversing plates 20 plow the tilled soil into lumps of a predetermined size, and the tilled soil is , are guided by the auxiliary claws 19 connected to each inner side, and are turned in the reversal direction by the soil-repelling action of the soil-repelling plate portion 32, which is a plate-shaped portion that protrudes inward from its curved surface on the rear side in the direction of rotation. Gradually, the soil is forcibly pushed, and the lower portion of the soil that the soil repellent plate portion 32 contacts is reversed near the bottom, and along with this, the reversal of the upper portion of the soil is promoted. In this case, cracks are generated in the length direction of the soil due to the soil repelling action of the soil repellent plate portion 32, and the recesses 38 between the outer adjacent portions of the main claws 18 of each tillage reversal plate 20 are created. cracks are created in the width direction of the soil, and therefore,
The large tilled soil is crushed into small clumps and thrown onto the uncultivated soil within the range that can be processed by the disk tillers 12 on both rear sides without being thrown outward. be done.

Further, the uncultivated land on which the lumps have been released by the pair of discs 10 is covered by the disc tillers 12 on both sides.
The tillage is continuously inverted by each disc 16 of the . In this case, since the soil cultivated by the pair of front discs 10 is crushed into small pieces and turned over, the rotary shafts 13 of the disc cultivating bodies 12 on both rear sides are pushed up by the soil. Because there is no structure, the soil is stable and can be tilled and turned over to a predetermined depth, and each disk 16 of the tiller body 12 on both sides is connected to the pair of disks 1 in front.
Since it is formed to have the same structure as 0, when performing tillage and reversal work on tilled soil, the soil is plowed and reversed through the same action as in the case described above. In the above case, each disc 10, 16 not only ensures the plowing reversibility of the soil due to the reliable insertion and biting action of its respective main claws 18, but also the ability to remove contaminants such as raw straw. This ensures that objects are cut and that they do not become tangled.

In the embodiment described above, a case has been described in which the disks 10 and 16 made up of a plurality of sets of tillage reversal plates 20 are disposed on both the front and rear sides, but the present invention is not limited to this. It is also possible to use a pair of disks 10 for use as a pair of disks 10, and for each disk of the disk cultivating body on both sides rearward thereof, a disk of a normal shape may be used.

〔Effect of the invention〕

According to the present invention, by arranging a plurality of sets of tilling and reversing plates, each of which is formed by dividing a disc, in a circular shape, the disc can be easily formed into a desired shape. In addition, each tilling reversal plate is constructed by combining the outer main cooling and the inner auxiliary claws, so if the disc is partially worn and damaged, simply replace the main claw or the auxiliary claw in the part that has been worn and damaged. It is extremely economical as there is no need to replace the entire unit. In addition, each tilling reversing plate has a main pawl on the outside, so it can penetrate and dig into the tilled soil well, and cutting and tilling can be carried out reliably. Furthermore, since the auxiliary claws are provided inside the main claws, the tilled soil can be reliably turned over in the reversing direction. Therefore, soil
It is possible to provide discs for rotary discs that can be ideally reversed for tillage.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a front view of a disc rotary take, Fig. 2 is a cross-sectional view of the section taken from line A to A in the above, and Fig. 3 is a set of tillage reversals as in the above. FIG. 4 is an exploded perspective view of the plate and a plan view of the disc rotary. 8, 13... Rotating shaft, 9, 17... Flange,
10, 16...Disc, 18...Main claw, 19...
... Auxiliary claw, 20 ... Plowing reversal plate, 23 ... Attachment part, 24 ... Toe, 25 ... Engagement recess.

Claims (1)

[Scope of Claims] 1. A plurality of sets of tillage reversing plates each consisting of a main pawl and an auxiliary pawl are detachably attached to the circumferential side of the rotating shaft via flanges, and each set of plowing The main claw of the reversing plate is curved toward the rear side in the rotational direction, and an engagement recess is formed between the attachment part for the flange and the claw tip, and the auxiliary claw is inside the engagement recess of the main claw. A disc for a disc rotary, characterized in that the disc is engaged. 2. A patent claim characterized in that the auxiliary claw is formed with a thickness equal to or thinner than the thickness of the main claw, and does not protrude at least beyond the surface of the main claw at the part where it is connected to the main claw. The disc for rotary discs according to item 1.