JPH0198401A

JPH0198401A - Rotary tiller

Info

Publication number: JPH0198401A
Application number: JP25649487A
Authority: JP
Inventors: Satoshi Fujimoto; 敏藤本
Original assignee: Kubota Corp
Current assignee: Kubota Corp
Priority date: 1987-10-12
Filing date: 1987-10-12
Publication date: 1989-04-17

Abstract

PURPOSE:To simplify operations required for a tine shaft positioned inside the turning movement of an automotive frame and smoothly perform the turning operation of the frame at the turning movement of the frame in a puddling work, by providing in a transmission case a clutch which stops the driving of the tine axis positioned inside the turning movement of the automotive frame while interlocking with the turning movement. CONSTITUTION:A clutch C stopping the driving of a tine shaft (6L or 6R) positioned inside the turning movement of an automotive frame while interlocking with the turning movement is provided in a transmission case 4. When a rotary tiller is placed in a field and its automotive frame is turned, a resistant plate 11 is swung inside the turning movement due to the resistance of earth and a shift fork 13 allows a driven sprocket 10 to shift outside the turning movement. The intermeshing of the driven sprocket 10 with the tine axis (6L or 6R) positioned inside the turning movement is disconnected and the transmission of power is cut, thereby stopping the driving of the tine axis.

Description

【発明の詳細な説明】〔産業上の利用分野〕本発明は、伝動ケースの下部側壁から左右へ爪軸を突出
させてあるロータリ耕耘装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a rotary tiller having a pawl shaft projecting left and right from the lower side wall of a transmission case.

[Conventional technology]

自走機体の後部にロータリ耕耘装置を連結し、水入れし
た圃場で代掻き作業を行う場合、圃場が柔らかいために
ロータリ耕耘装置を地中に入れたままで機体を旋回させ
ている。そのため、機体を旋回させる場合、旋回内側の
爪軸では前進移動が少なく、狭い範囲内で土を集中的に
掻き上げるので圃場面に凹凸が生じることがあった。When a rotary tiller is connected to the rear of a self-propelled aircraft and plowing is performed in a field filled with water, the rotary tiller remains in the ground and the machine turns because the field is soft. Therefore, when the machine is turned, the claw shaft on the inside of the turn does not move forward much, and dirt is intensively scooped up within a narrow area, which can cause unevenness in the field.

そこで従来では、実開昭５６−７１１０２号公報に開示
されているように、左右の爪軸を独立で駆動可能にする
とともに、伝動ケース内に両爪軸用の変速装置を内装し
、両爪軸に対し同速及び回転差のある変速伝動を可能に
したものが考案されていた。Therefore, conventionally, as disclosed in Japanese Utility Model Application Publication No. 56-71102, the left and right pawl shafts can be driven independently, and a transmission for both pawl shafts is built inside the transmission case. A device was devised that enabled variable speed transmission with the same speed and rotational difference between the shafts.

[Problem that the invention seeks to solve]

しかしながら、上記引例に挙げた構造のロータリ耕耘装
置では、変速装置を伝動ケースの上端に設けられたレバ
ーによって操作しなければならない。そのため、機体の
旋回時にレバーを操作して旋回内側の爪軸を減速したり
駆動停止するのに手間取ることが多かった。However, in the rotary tiller having the structure mentioned in the above reference, the transmission must be operated by a lever provided at the upper end of the transmission case. Therefore, when the aircraft turns, it often takes time to operate the lever to decelerate or stop the drive of the claw shaft on the inside of the turn.

本発明は、このような実情に鑑み、代掻き作業での機体
旋回において、旋回内側の爪軸への所要操作を簡略化し
、機体旋回をスムーズに行えるようにすることにある。In view of these circumstances, the present invention aims to simplify the required operation of the pawl shaft on the inside of the turn when turning the machine during puddling work, and to enable the machine to turn smoothly.

[Means for solving problems]

本発明の特徴構成は、前記伝動ケースに、自走機体の旋
回作動に連動して旋回内側の爪軸を駆動停止するクラッ
チを設けてある点にあり、その作用・効果は次の通りで
ある。The characteristic configuration of the present invention is that the transmission case is provided with a clutch that drives and stops the claw shaft on the inside of the turning in conjunction with the turning operation of the self-propelled aircraft, and its operation and effects are as follows. .

［作　用〕つまり、自走機体を旋回作動させると伝動ケース内に設
けられたクラッチが自動的に働き、旋回内側の爪軸を駆
動停止するのである。[Function] In other words, when the self-propelled aircraft is turned, the clutch provided in the transmission case automatically operates to stop driving the claw shaft on the inside of the turn.

〔Effect of the invention〕

その結果、代掻き作業での機体旋回において、旋回内側
の爪軸に対する所定操作が自動化されたので煩わしいレ
バー操作が要らなくなり、機体旋回をスムーズに行える
ようになった。As a result, when turning the machine during puddling work, the predetermined operations on the claw shaft on the inside of the turn have been automated, eliminating the need for cumbersome lever operations and making it possible to turn the machine smoothly.

〔Example〕

以下、本発明の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below based on the drawings.

第３図に、自走機体（Ａ）の後部にロータリ耕耘装置（
Ｂ）を連結した歩行型管理機が示されている。Figure 3 shows a rotary tiller (
A walking management machine is shown in which B) is connected.

前記自走機体（八）は、−下端に駆動輪（１）を軸支し
ているミッションケース（Ｍ）の前部にエンジン部（Ｅ
）を設けるとともに、上端に操縦ハンドル（２）を取付
けて構成しである。また、前記ロータリ耕耘装置（Ｂ）
は、自走機体（Ａ）に連結されるロータリフレーム（３
）に伝動ケース（４）を縦姿勢で固定し、その下部側壁
から左右へ耕耘爪（５）が取付けられた爪軸（６Ｌ）　
、　（６Ｒ）を突出させるとともに、前記ロータリフレ
ーム（３）にロータリカバー（７）等を設けたもので、
副チェーン機構（８）を介して得られる機体側からの動
力を、伝動ケース（４）内のチェーン（１５）を介して
左右の爪軸（６Ｌ）　、　（６Ｒ）へ伝達するようなっ
ている。The self-propelled aircraft (8) has an engine section (E
) and a control handle (2) attached to the upper end. Moreover, the rotary tilling device (B)
is a rotary frame (3) connected to the self-propelled aircraft (A).
) with the transmission case (4) fixed in a vertical position, and a claw shaft (6L) with tilling claws (5) attached to the left and right from the lower side wall of the transmission case (4).
, (6R) protrudes, and a rotary cover (7) etc. is provided on the rotary frame (3),
The power from the machine body obtained through the auxiliary chain mechanism (8) is transmitted to the left and right pawl shafts (6L) and (6R) through the chain (15) inside the transmission case (4). .

前記伝動ケース（４）内には、自走機体（Ａ）の旋回作
動に連動して旋回内側の爪軸（６Ｌ又は６Ｒ）を駆動停
止するクラッチ（Ｃ）を設けてある。第１図に示すよう
に、伝動ケース（４）内に位置する左爪軸（６Ｌ）と右
端部と右爪軸（６Ｒ）の左端部とに亘って、伝動軸（９
）を相対回動自在に差し込むとともに、それらの端部と
伝動軸（９）の外周とに同径のスプライン（６Ｉｔ　）
　、　（６ｒ）　、　（９ａ）を形成し、これらのスプ
ライン（６１ｔ　）　、　（６ｒ）　、　（９ａ）に前
記チェーン（１５）の従動スプロケット（１０）をシフ
ト自在に嵌合しである。そして、伝動ケース（４）の後
下端に旋回方向検出器としての抵抗板（１１）を縦軸芯
周りで揺動自在に設け、この抵抗板（１１）の支軸（１
２）にシフトフォーク（１３）を固着するとともに、こ
のシフトフォーク（１３）の先端を従動スプロケット（
１０）の左右両側面に接当させである。A clutch (C) is provided in the transmission case (4) for driving and stopping the pawl shaft (6L or 6R) on the inside of the turning in conjunction with the turning operation of the self-propelled aircraft (A). As shown in FIG. 1, the power transmission shaft (9
) are inserted so as to be relatively rotatable, and a spline (6It) of the same diameter is attached to their ends and the outer periphery of the transmission shaft (9).
, (6r), and (9a), and the driven sprocket (10) of the chain (15) is fitted into these splines (61t), (6r), and (9a) so as to be freely shiftable. A resistance plate (11) as a turning direction detector is provided at the rear lower end of the transmission case (4) so as to be swingable around the vertical axis, and the support shaft (1
A shift fork (13) is fixed to the drive sprocket (2), and the tip of the shift fork (13) is attached to the driven sprocket (
10) in contact with both left and right sides.

上記構成により、ロータリ耕耘装置（Ｂ）を圃場内に入
れたまま自走機体（Ａ）を旋回させると土の抵抗を受け
て抵抗板（１１）が旋回内側へ振れ、シフトフォーク（
１３）が従動スプロケット（１０）を旋回外側へシフト
する。それによって、従動スプロケ７　ト（１０）と旋
回内側の爪軸（６Ｌ又は６Ｒ）咬合が外されて伝動が断
たれ駆動停止することになる。With the above configuration, when the self-propelled machine (A) turns with the rotary tillage device (B) inside the field, the resistance plate (11) swings inward due to the resistance of the soil, causing the shift fork (
13) shifts the driven sprocket (10) to the outside of the rotation. As a result, the driven sprocket (10) and the pawl shaft (6L or 6R) on the inside of the rotation are disengaged, the transmission is cut off, and the drive is stopped.

従って、当該歩行型管理機では、代掻き作業中に旋回し
ても、即座に且つ自動的に旋回内側の爪軸（６Ｌ又は６
Ｒ）を駆動停止できるから土を余分に掻き上げて圃場面
に凹凸を形成することもなく、良好に旋回を行えるので
ある。Therefore, even if the walking-type management machine turns during puddling work, it immediately and automatically adjusts the claw shaft (6L or 6L) on the inside of the turn.
Since the drive of R) can be stopped, there is no need to rake up extra soil and create unevenness on the field, and it is possible to turn smoothly.

[Another example]

本発明を実施するに、前記クラッチ（Ｃ）を、前記操縦
ハンドル（２）の左右に設けられた操向クラッチレバ−
（１４）にワイヤ等を介して連係し、機体旋回のための
操向クラッチレバ−（１４）の−方の切り操作に連動し
て旋回内側の爪軸（６Ｌ又は６Ｒ）を駆動停止するよう
にしてもよい。In carrying out the present invention, the clutch (C) is connected to a steering clutch lever provided on the left and right sides of the steering handle (2).
(14) via a wire, etc., and stops driving the pawl shaft (6L or 6R) on the inside of the turn in conjunction with the turning operation of the - side of the steering clutch lever (14) for turning the aircraft. You may also do so.

尚、特許請求の範囲の項に図面との対照を便利にする為
に符号を記すが、該記入により本発明は添付図面の構造
に限定されるものではない。Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

図面は本発明に係るロータリ耕耘装置の実施例を示し、
第１図は伝動ケースの横断平面図、第２図は同縦断側面
図、第３図は歩行型管理機の全体側面図である。（４）・・・・・・伝動ケース、（６Ｌ）　、　（６Ｒ
）・・・・・・爪軸、（Ａ）・・・・・・自走機体、（
Ｃ）・・・・・・クラッチ。The drawings show an embodiment of a rotary tillage device according to the present invention,
FIG. 1 is a cross-sectional plan view of the transmission case, FIG. 2 is a vertical cross-sectional side view thereof, and FIG. 3 is an overall side view of the walking management machine. (4)...Transmission case, (6L), (6R
)......Claw shaft, (A)...Self-propelled aircraft, (
C)...Clutch.

Claims

[Claims] 1. From the lower side wall of the transmission case (4) to the left and right, the claw shaft (6L
), (6R) are protruded, and the transmission case (4) is provided with a claw shaft (6L or 6R) on the inside of the rotation in conjunction with the rotation operation of the self-propelled aircraft (A). A rotary tiller equipped with a clutch (C) for stopping. 2. The rotary tiller according to claim 1, wherein the clutch (C) is turned on and off in conjunction with the on and off of a traveling clutch connected to the drive wheel (1). 3. The clutch (C) is linked to a travel clutch lever (14) provided on the operating handle (2), and is turned on and off in conjunction with the operation of the travel clutch lever (14). The rotary tillage device according to Items 1 and 2. 4. The rotary tiller according to claim 1, wherein the clutch (C) is turned on and off based on the detection result of a turning direction detector (11) provided at the lower part of the transmission case (4). .