JPH0365101A - Work shaft attachment device for side rotary tiller - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The field of application of this invention is a mounting device for a work shaft to which a tilling claw is attached in a side rotary tiller attached to an agricultural tractor or a walking power mobile agricultural machine. .

[Prior art]

A side cover fixed to the side of the tilling cover is arranged in parallel inside the side support, and an intermediate support having a sliding hole provided at the bottom of the side cover is removably attached.
A circumferential groove is formed on the inner periphery of this sliding hole, and a bearing support that rotatably supports the work shaft is slidably fitted into the sliding hole, and the bearing support is placed so as to face the circumferential groove. A stopper plate attached to the inside of the bearing support presses the inner end of the rotating ring interposed between the small-diameter outer circumference formed inward on the outer circumference of the bearing support and the circumferential groove. The outside was attached to the bottom of the side support.

[Problems to be solved by the present invention] In the above-mentioned prior art, a side cover fixed to the side of the tilling cover is provided in parallel to the inside of the side support, and a sliding hole is formed in the lower part of the side cover. The provided intermediate support is removably attached, and a bearing support is formed on the inner periphery of the sliding hole, and a bearing support that rotatably supports the work shaft is slidably fitted into the sliding hole. The inner end of the rotating ring, which is interposed between the small-diameter outer circumferential part and the circumferential groove formed inward on the outer circumferential part of the bearing support body so as to face the circumferential groove, is attached to the inside of the bearing support body. In addition to pressing against the stopper plate, the outside of the bearing support was attached to the lower part of the side support, so there was a gap to avoid interference between the bolt attaching the stopper plate and the straw part provided outside the work shaft. As a result, the width of the work shaft attachment part at the bottom of the side support became wider, and disposal of residual tillage became a problem.

[Means for solving problems]

This invention rotatably supports a working shaft with a tilling claw attached between the lower part of a side transmission case and the lower part of a side support, and also supports a working shaft which is located between the side transmission case and the side support and covers the working shaft. In a side rotary cultivator in which the tilling cover is configured to be rotatable around the bearing of the working shaft, a side cover fixed to the side of the tilling cover is arranged in parallel inside the side support body, and the side cover is fixed to the side of the tilling cover. An intermediate support with a sliding hole at the bottom is detachably attached, a peripheral part is formed on the inner periphery of the sliding hole, and a bearing support that rotatably supports the work shaft is slid into the sliding hole. movably fitted inside,
Rotating ring interposed between the small-diameter outer circumference formed inward on the outer circumference of the bearing support and the circumferential groove so as to face the groove. A rotary ring formed outward with a small diameter outer periphery and interposed between the single circumferential groove and the small diameter outer periphery is supported from the side support body side to which the bearing support body is attached.

[Action and effect]

This invention provides a side cover that is fixed to the side of the tilling cover on the inside of the side support, and an intermediate support with a sliding hole provided in the lower part of the side cover that is removably attached. A circumferential groove is formed on the inner periphery of the sliding hole, a bearing support that rotatably supports a working shaft is slidably fitted into the sliding hole, and the outer periphery of the bearing support is formed so as to face the circumferential groove. is formed on the small diameter outer periphery facing outward, and the rotating ring interposed between the circumferential groove and the small diameter outer periphery is supported from the side support side where the bearing support is attached, so that the work shaft is rotationally driven. The lower part of the side support can be plowed by the plowing action of the tiller claws rotating close to the side support, the narrower the working shaft attachment device at the lower part of the side support can be.

〔Example〕

Hereinafter, one embodiment of the present invention will be specifically described based on the drawings.

First, the configuration will be explained. Agricultural tractor body (
The rear PTO shaft (
The rotary tiller is movably connected to a universal joint (not shown) via a universal joint (not shown).The rotary tiller has support tubes 4, 4 on both left and right sides of a main transmission case 3, which has an input shaft 2 connected to the rear part of the universal joint. An upper transmission shaft 5 is installed inside the left support cylinder 4, a side transmission case 6 is attached to the left end of the support cylinder 4, and a sheet metal is installed at the right end of the right support cylinder 4 to increase strength. A side support 7 obtained by press working is attached, and a bearing support 1 piece is installed to support one end of the working shaft 10 in a mounting hole 9 provided in the lower inner wall 8 of the side transmission case 6. The intermediate support 3 rotatably fitted to the lower inner wall 8 with bolts 17 via the seal 14, thrust plate 15 and stopper plate 16 with a rotating ring 12 fitted on the outer periphery of the The top sprocket 8 is fixed to the end of the work shaft 10 inside the side transmission case 6, and the top sprocket 8 is fixed to the end of the work shaft 10 inside the side transmission case 6, so that the top sprocket 8 is fixed between the top sprocket (not shown) and the sprocket (not shown) provided at the end of the top transmission shaft 5. (Illustration omitted) However, the hook has been passed. Then, additionally installed on the side transmission case 6 and the side support 7 at the left and right ends of the tilling cover 19, which is located inside the side transmission case 6 and the side support 7 and below the main transmission case 6 and the support tubes 4, 4. Part of the left and right side covers 20°20
The lower part of one side is attached to the left intermediate support 13, and the lower part of the other side is detachably attached to the right intermediate support 22 having a sliding hole 21, and a circumferential groove 23 is formed in the inner periphery of this sliding hole 21. A right bearing support 24 which is formed and rotatably supports the other end of the working shaft 10 is slidably fitted into the sliding hole 21,
An inner small-diameter outer circumferential portion 25 is formed on the outer circumferential portion of the right bearing support 24 so as to face the circumferential groove 23, and an outer small-diameter outer circumferential portion 2 of a smaller diameter is formed adjacent to and outside the inner small-diameter outer circumferential portion 25.
6 is formed, and a rotating ring 27 is interposed between the circumferential groove 23 and the inner small diameter outer circumferential portion 25, and the inner surface of the outer small diameter outer circumferential portion 26 contacts the rotating ring 27, and the outer surface contacts this right bearing. A stopper collar 28 that is on the same side as the side surface of the support body 24 is fitted onto the outside, and the mounting portion 29 of the side support body 7 is brought into contact with the side surface of this stopper collar 28, so that the right bearing support body 24 is attached to the side support body 7. It is installed. Note that 30 is a third claw holder, 32 is a tilling claw, and 33 and 34 are connecting flanges.

On the other hand, in the conventional device, as shown in FIG.
An intermediate support 37 with a sliding hole 36 provided in the lower part thereof is removably attached, and an R groove 3 is formed in the inner circumference of this sliding hole 36.
A bearing support 40 having a shape of 8 and rotatably supporting the working shaft 39 is slidably fitted into the sliding hole 36 , and the bearing support 40 is fitted inside the outer peripheral part of the bearing support 4 o so as to face the circumferential groove 38 . A stopper plate 43 attached to the inside of the bearing support 40 presses the inner end of the rotating ring 42 interposed between the small diameter outer circumference 41 and the circumferential groove 38 formed toward the bearing support 40 . The outer side of the side support member 35 is attached to the lower part of the side support member 35. 44 is a bolt for attaching the stopper plate 43, 45 is a straw plate, 46.47 is a mounting flange, and 48 is a cap.

Next, the functions and effects of the embodiments of this invention will be explained. When performing adjacent reciprocating tillage work in a rice field by driving a side rotary tiller while driving an agricultural tractor, if the tiller is run with the side supports 7 positioned at the edge of the ridge, the side rotary tiller will be close to the side supports 7. The soil below the side supports 7 is tilled by the tilling action of the tilling claws attached to the working shaft 10. Then, when the agricultural tractor goes around the edge of the field and turns around to plow the adjacent land, the side support 7 passes slightly overlapping the inside of the cultivated land compared to the track where the side transmission case 6 passed during the outgoing journey. By running the tiller in this manner, the remaining tillage portion below the side transmission case 6 is tilled. By operating the adjustment handle, the tilling cover 19 is adjusted to rotate back and forth around the left bearing support 1 and the right bearing support 24, changing the posture of the tilling cover 19 and scattering the tilled soil. Change the situation.

The right side bearing support 24 that rotatably supported the other end of the working shaft 10 is slidably fitted into the sliding hole 21 and attached to the outer periphery of the right side bearing support 24 so as to face the circumferential groove 23. While forming an inner small diameter outer peripheral part 25, this inner small diameter outer peripheral part 2
An outer small-diameter outer circumferential portion 26 of a smaller diameter is further formed on the outer side adjacent to the inner small-diameter outer circumferential portion 25, and a rotating ring 27 is formed between the one-circle ring 23 and the inner small-diameter outer circumferential portion 25.
is interposed, and the inner surface is the rotating ring 2 on the outer small diameter outer peripheral part 26.
7, and the outer surface is in contact with this right bearing support 2.
A stopper collar 28 that is on the same side as the side of 4 is externally fitted, and a side support 7 is attached to the side of this stopper collar 28.
Since the right side bearing support 24 is attached to the side support 7 with the attachment portion 29 of the side support 7 in contact with the right side bearing support 24, the lower bearing portion of the side support 7 becomes narrow, making it easy to cultivate the lower side of the side support 7. Became.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional rear view of the main parts of this invention, Fig. 2 is a side view of the main parts, Fig. 3 is an exploded cross-sectional rear view of the main parts, and Fig. 4 shows the bearing section on the side transmission case side. FIG. 5 is a cross-sectional rear view, FIG. 5 is an overall plan view, and FIG. 6 is a cross-sectional rear view showing a conventional device. Main code theory 1 Gato...Side rotary tiller 6...Side transmission case 7...Side support 10...Work axis Engineering 9.
・・Plowing cover 20・・Part of side cover 21・・
・Sliding hole 22...Right side intermediate support 23 Mountain circumference 2
4...Right side bearing support body 25...Inner small diameter outer peripheral part
26...Outer small diameter outer peripheral part 27...Rotating ring 28...Stock collar 29...Mounting part

Claims (1)

[Claims] (1) A work shaft with a tilling claw attached between the lower part of the side transmission case and the lower part of the side support body is rotatably supported, and the work shaft is located between the side transmission case and the side support body and covers the work shaft. In a side rotary cultivator in which the tilling cover is configured to be rotatable around the bearing of the working shaft, a side cover fixed to the side of the tilling cover is arranged in parallel inside the side support, and the lower part of the side cover is An intermediate support body with a sliding hole is removably attached to the inside, and a circumferential groove is formed on the inner periphery of this sliding hole, so that the inner support body rotatably supporting the work shaft can be slid into the sliding hole. The inner support is attached with a rotary ring that can be fitted into the inner support, the outer periphery of the inner support body facing the circumferential groove and formed with a small diameter outer circumference, and interposed between the circumferential groove and the small diameter outer circumference. A work shaft mounting device characterized in that the work shaft is supported from the side support side.