JPS60191829A - Walking type movable agricultural machine - Google Patents

Walking type movable agricultural machine

Info

Publication number
JPS60191829A
JPS60191829A JP4797784A JP4797784A JPS60191829A JP S60191829 A JPS60191829 A JP S60191829A JP 4797784 A JP4797784 A JP 4797784A JP 4797784 A JP4797784 A JP 4797784A JP S60191829 A JPS60191829 A JP S60191829A
Authority
JP
Japan
Prior art keywords
clutch
operating
lever
operating lever
agricultural machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4797784A
Other languages
Japanese (ja)
Inventor
Shinichi Takeda
伸一 竹田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP4797784A priority Critical patent/JPS60191829A/en
Publication of JPS60191829A publication Critical patent/JPS60191829A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To improve safety by arranging a control lever near a knob of a maneuvering handle under the condition of a clutch shoved in by the knob operation and enabling a lock mechanism for fixing the lever to the position of the shoved-in clutch to be released in changing over the operation to backward travelling. CONSTITUTION:Adjacent a transmission belt 9 trained over an engine output pulley 6 and an input pulley 8 of a transmission case 7 is arranged a tension arm 10 swingable about a pivot 11. This arm 10 is constitutionally urged in the action releasing direction by a spring 12 to provide a main clutch 14. The tension arm 10 can be operated by a control lever 16 through a release wire 15, and said lever 16 is arranged near a knob 3a to be operated by hand grasping the knob 3a of a maneuvering handle 3. Also, a lock mechanism 22 for fixing the control lever 16 to the position in which the clutch is shoved in is provided and released from locking through an operating mechanism 28 only when a forward and backward travelling changing-over unit 13 is operated into the backward travelling condition.

Description

【発明の詳細な説明】 本発明は、走行用クラッチの操作レバーをクラッチ切υ
位置に付勢された状態で設けると共に、前記操作レバー
をクラッチ入り位置に固定する解除操作自在なロック機
構を設けて、操作レバーをロック機構によりクラッチ入
り位置に固定し、操作レバーをクラッチ入り位置に保持
する操作をしなくとも楽に走行できるように構成し、し
かも、ロック機構を解除操作するだけで迅速に走行停止
させられるように構成した歩行型移動農機に関する。
[Detailed Description of the Invention] The present invention provides a means for disengaging the operating lever of the traveling clutch.
A lock mechanism is provided in which the operating lever is biased to the clutch engaged position, and a locking mechanism is provided which can be freely released to fix the operating lever in the clutch engaged position. To provide a walk-behind mobile agricultural machine configured to be able to travel easily without any operation to hold it in place, and moreover configured to be able to quickly stop traveling by simply releasing a locking mechanism.

歩行型移動農機において、後進時の安全対策のため、操
縦者が転倒する等して操作具から手を放すと機体走行が
自動停止するよう構成するのに、従来、特開昭55−6
3972号公報に開示される手段を採用していた。すな
わち、エンジン停止操作スイッチを操縦ハンドルの握り
部に配設し、走行時にはエンジン停止されないように前
記スイッチを切“りに維持操作するように、かつ、スイ
ッチ操作を解除するとスイッチが入りになるように構成
していた。
In order to ensure safety when reversing, walk-behind mobile agricultural machines have been configured so that if the operator releases the operating tool due to a fall or other such event, the machine will automatically stop running.
The method disclosed in Publication No. 3972 was adopted. That is, an engine stop operation switch is provided in the grip of the steering wheel, and the switch is kept in the OFF position to prevent the engine from being stopped while driving, and the switch is turned ON when the switch operation is released. It was composed of

この従来構成にあっては、エンジン停止操作スイッチの
操作が操縦ハンドルを握る手ででき、走行停止しないよ
うに操作しながらハンドル操作することが容易にできる
利点があるが、走行振動性−のために不測にスイッチか
ら手が放れた場合、エンジンが停止するために、作業を
再開するべくエンジンリコイルスタータを操作する等エ
ンジン再始動のだめの煩わしい手間を掛けねばならず、
この点を改善する余地があった。
This conventional configuration has the advantage that the engine stop operation switch can be operated with the hand holding the steering wheel, making it easy to operate the steering wheel while keeping the vehicle from stopping. If the switch is unexpectedly released, the engine will stop and you will have to go through the trouble of restarting the engine, such as operating the engine recoil starter to resume work.
There was room for improvement on this point.

本発明の目的d、上記した如く安全で、かつ、走行停止
しないようにしながらのハンドル操作が容易にできるも
のを、走行停止後の再走行が迅速にできる状態にするこ
とにある。
The object (d) of the present invention is to provide a vehicle that is safe as described above, and that allows easy steering operation while preventing the vehicle from stopping, so that it can be quickly restarted after the vehicle has stopped traveling.

本発明は、胃記した歩行型移動農機において、前記操作
レバーを握シ操作によシフラッチ入り位置になる状態で
操縦ハンドルの握シ部付近に配置すると共に、前記ロッ
ク機構を作用不能状態にする操作機構を、前後進切換え
装置に対してこれの後進状態においてのみ自動的に作用
するように連係させた状態で設けであることを特徴とし
、その作用及び効果は次のとおりである。
The present invention provides a walk-behind mobile agricultural machine in which the operating lever is disposed near the grip portion of the operating handle in a state where the shift latch is engaged by the grip operation, and the lock mechanism is rendered inoperable. The present invention is characterized in that the operating mechanism is provided in such a manner that it is linked to the forward/reverse switching device so that it automatically acts only in the reverse state of the switching device, and its functions and effects are as follows.

すなわち、走行用クラッチ操作レバーを握り操作式にす
ると共に操縦ハンドル握υ部に配置し、かつ、前記操作
機構を設けることによシ、後進時において、走行を可能
にするために走行用クラッチが切れないように操作レバ
ーを操縦ハンドルを握る手で握シ操作することが可能に
なシ、手放しに伴い、自動的に、操作レバーがクラッチ
切り位置に復元し、走行用クラッチが切れることになる
That is, by making the traveling clutch operating lever a grip-operated type, placing it on the steering handle grip part, and providing the aforementioned operating mechanism, the traveling clutch can be operated in order to enable traveling when traveling in reverse. It is now possible to squeeze and operate the operating lever with the hand holding the steering wheel to prevent it from breaking, and when you release it, the operating lever automatically returns to the clutch disengaged position, disengaging the driving clutch. .

従って、走行停止しないように操作しながらも操縦ハン
ドルを握って容易かつ確実に操作できると共に、手放し
によって走行停止する安全なものにでき、それでありな
がら、走行停止を走行用クラッチて行うことにより、停
止後の再走行がクラッチ操作レバーを入りにするだけで
容易かつ迅速に行えるようにできた。その上、本来的に
備えられている走行用クラッチを利用するから、クラッ
チ操作レバーを握リレバーにすると共に、前記操作機構
を付加するだけの簡単な改造で済み、経済面で有利にで
きだ。
Therefore, it is possible to operate the steering wheel easily and reliably by grasping the steering wheel while operating the vehicle so as not to stop the vehicle, and it is also possible to safely stop the vehicle by simply letting go of the steering wheel. Restarting the vehicle after stopping can be done easily and quickly by simply turning on the clutch control lever. Furthermore, since the drive clutch that is originally provided is used, the clutch operation lever can be replaced with a grip lever and the above-mentioned operation mechanism can be added, which is a simple modification, which is advantageous from an economic point of view.

以下に、本梵明の実施例を図面に基いて説明する。Hereinafter, embodiments of the present Brahma will be described based on the drawings.

第1図に示すように、左右一対の車輪(1) 、 (1
)、及び、エンジン(2)等を有した走行機体から後方
に操縦ハンドル(3)を延出し、耕耘ロータ等の各拙作
業具を車輪(1)に替えて車軸(4)に取付けだシ、ロ
ータリーυ[耘装置等の各種作業装置をピッチ(5)に
連結するように歩行型移動農機を構成しである。
As shown in Figure 1, a pair of left and right wheels (1), (1
), a control handle (3) is extended rearward from a traveling body having an engine (2), etc., and various working implements such as a tilling rotor are attached to an axle (4) instead of wheels (1). , rotary υ [walking type mobile agricultural machine is constructed so that various working devices such as a rotary device are connected to the pitch (5).

第2図に示すように、エンジン出力プーリ(6)と、ミ
ッションケース(7)の入力プーリ(8)とにわたって
伝動ベルト(9)を巻回し、この伝動ベルト(9)に緊
張力付与するテンションアームα1を、枢支軸aυを介
して作用位置と作用解除位置とに揺動切換えできるよう
にミッションケース(7)に取付けると共に、スプリン
グ(6)によって作用解除位置に付勢されるように構成
して、エンジン(2)から走行用ギアートランスミッシ
ョン贈、及び、連結作業装置用動力取出し軸(図外)の
夫々に対する伝動を入シ切りするように主クラッチQΦ
を構成しである。前記テンションアームHにレリーズワ
イヤ0υを介して連動させた操作レバーtteを、前記
操縦ハンドル(3)の握り部(81L)を掌握する手で
操作できるように前記握り部(3a)の付近に配置する
と共に、枢支軸1)?)を介して操に′[)・ンドル(
3)の支持部材(ト)に揺動自在に取付けである。そし
て、前記操作レバーuGが前記スプリング@によってク
ラッチ切シ位1iffi (OFF)に付勢されるよう
に構成してあり、操作レバー酸をクラッチ入シ位N(O
N)に握り操作して主クラッチOaの入り操作をするよ
うにしである。
As shown in Figure 2, a transmission belt (9) is wound around the engine output pulley (6) and the input pulley (8) of the transmission case (7), and tension is applied to the transmission belt (9). The arm α1 is attached to the transmission case (7) so as to be swingable between an action position and an action release position via a pivot shaft aυ, and is configured to be biased to the action release position by a spring (6). Then, the main clutch QΦ is turned on and off to turn on and off the transmission from the engine (2) to the driving gear transmission and the power take-off shaft for the connected work device (not shown).
It consists of: An operating lever tte linked to the tension arm H via a release wire 0υ is arranged near the grip part (3a) so that it can be operated with a hand gripping the grip part (81L) of the operating handle (3). At the same time, the pivot axis 1)? ) to Misao through ′[)・ndol(
It is swingably attached to the support member (g) in 3). The operating lever uG is biased to the clutch disengaged position 1iffi (OFF) by the spring @, and the operating lever uG is biased to the clutch engaged position N(OFF).
N) to engage the main clutch Oa.

第2図に示すように、前記クラッチ操作レバー(1t9
にレリーズワイヤQ5を介して連動させた被保合部材θ
場を、操作レバーoQの揺動に連動して支軸(イ)の周
りで揺動するように支軸(7)を介して操縦ハンドル(
3)の支持部材■υに枢支連結し、前記被保合部材(1
1の凹凸部(19a)に係合してクラッチ操作レバーQ
■をクラッチ入り位4! (ON)に固定する揺動式ロ
ック爪(2)を、操作レバーOQによって作用解除操作
できるように、支軸(2)を介して前記支持部材シυに
枢支連結しである。そして、前記ロック爪(イ)をスプ
リング(ハ)により作用側に付勢すると共に、前記凹凸
部(19B)の傾斜カム面(191+)の作用により、
操作レバーQGが握り操作されるに伴い揺動する被係合
部材Q値がロック爪磐を自動的に解除操作し、クラッチ
入シ位置(ON)にされた操作レバーCIQにロック爪
(イ)が自動的に作用するように構成して、操作レバー
αQを入り位置(ON)に維持操作しなくとも主クラッ
チ0勺を入りに維持できるように、かつ、ロック爪に)
の解除操作によって主クラッチα脣が切りになるように
、かつ、操作レバーoQを入り位置(ON)に操作する
だけで自動的にロックされるようにしである。
As shown in FIG. 2, the clutch operating lever (1t9
The secured member θ is interlocked with the release wire Q5 through the release wire Q5.
The control handle (A) is moved through the support shaft (7) so that the field swings around the support shaft (A) in conjunction with the swing of the control lever oQ.
3) is pivotally connected to the support member ■υ of the secured member (1).
The clutch operating lever Q is engaged with the uneven portion (19a) of No.1.
■The clutch entered 4th place! A swing type lock pawl (2) fixed in the ON position is pivotally connected to the support member υ via a support shaft (2) so that the lock pawl (2) can be operated to release the action using the operation lever OQ. Then, the lock claw (A) is urged toward the action side by the spring (C), and by the action of the inclined cam surface (191+) of the uneven portion (19B),
The Q value of the engaged member that swings as the operating lever QG is gripped and operated automatically releases the locking claw, and the locking claw (A) is applied to the operating lever CIQ that is in the clutch engaged position (ON). is configured so that it operates automatically, so that the main clutch can be maintained in the engaged position without the need to maintain the operation lever αQ in the engaged position (ON), and the lock pawl)
The main clutch α is disengaged by the releasing operation, and is automatically locked by simply operating the operating lever oQ to the on position (ON).

前記トランスミッションa場を構成するに、第2図に示
すように、前進第1速と後進第1速とに中立状態を挾ん
で切換える第1操作軸(ハ)、及び、前進第2速と後進
第2速とに中立状態を秋んで切換える第2操作軸(イ)
の夫々を、ミッションケース(7)から横側に摺動自在
に突出させ、これら第1及び第2操作軸(4)、(イ)
に対する操作レバー(イ)を、ミッションケース(7)
から後方に延出すると共に、横軸芯(X)周りで上下に
揺動操作して第1操作軸@と第2操作軸(ハ)とに択一
的に係合させるように、かつ、縦軸芯(Y)周りで左右
に揺動操作して第1操作軸(イ)又は第2操作軸(4)
を摺動操作するように構成してあり、操作レバーに)に
よって前進2段・後進2段に切換えられるようにしであ
る。すなわち、操作レバー(ロ)を第1操作位置Nにす
ると中立状態になシ、操作レバー(ロ)を第2操作位置
(Fl)にすると前進第1速になり、操作レバー(イ)
を第8操作位置(F2)にすると前進第2速になり、操
作レバー(イ)を第4操作位置(R1)にすると後進第
1速になり、操作レバー(ロ)を第5操作位置(R2)
にすると後進第2速になるのである。
As shown in FIG. 2, the transmission field a comprises a first operating shaft (c) that switches between the first forward speed and the first reverse speed with a neutral state in between, and a second operating shaft that switches between the second forward speed and the reverse speed. 2nd operating shaft (A) that switches from neutral to 2nd speed
These first and second operating shafts (4) and (a) are slidably protruded laterally from the mission case (7), respectively.
the control lever (A) for the transmission case (7).
Extends rearward from the center and swings up and down around the horizontal axis (X) to selectively engage the first operating shaft @ and the second operating shaft (C), and Rotate left and right around the vertical axis (Y) to rotate the first operating axis (A) or the second operating axis (4).
It is configured to be slidably operated, and can be switched to two forward speeds and two reverse speeds using the operating lever (). In other words, when the operating lever (B) is set to the first operating position N, it is not in the neutral state, and when the operating lever (B) is set to the second operating position (Fl), it is in the first forward speed, and the operating lever (A) is in the first forward speed.
When set to the 8th operating position (F2), the second forward speed is set; when the operating lever (A) is set to the fourth operating position (R1), the first reverse speed is set, and when the operating lever (B) is set to the fifth operating position ( R2)
When it is set to 2nd reverse gear.

第2図に示すように、前記ロック爪(財)をレリースワ
イヤ(ト)により前記ミッション操作レバーQカに連動
させると共に、第8図に示すように、操作レバー(4)
が第2操作位置(Fl )及び第8操作位ji!?(F
2)に在る状態においては、レリーズワイヤ□□□が弛
緩してロック爪(支)の作用が可能になるように、第4
図に示すように、操作レバー(イ)が第4操作位珈(f
員)及び第5操作位置(R2)に在る状態においては、
ロック爪に)がレリーズワイヤ(ハ)によシ作用解除位
置に引き操作されて作用不能な状態になるように構成し
、後進時において、クラッチ操作レバー(イ)を操縦ハ
ンドル(3)を握る手によって入り位置(ON)に維持
操作しながら機体走行させるように、操縦ハンドル(3
)から手を放すと、自動的に、クラッチ操作レバー。呻
が切り位[(OF’F)に4元して走行停止するように
しである。
As shown in FIG. 2, the lock pawl is interlocked with the transmission operating lever Q by a release wire (G), and as shown in FIG.
are the second operating position (Fl) and the eighth operating position ji! ? (F
In the state of 2), the release wire □□□ is relaxed and the fourth locking claw (support) is activated.
As shown in the figure, the operating lever (a) is at the fourth operating position (f).
member) and in the fifth operating position (R2),
The lock pawl) is pulled to the release position by the release wire (c) and becomes inoperable, and when moving backward, the clutch operating lever (a) is held by the control handle (3). Turn the control handle (3) so that the aircraft moves while maintaining it in the ON position (ON) by hand.
), the clutch operation lever will be activated automatically. The engine was designed to stop running with the groan at the off position [(OF'F).

上記実施例の如くロック爪(イ)を作用側に付勢すると
、操作レバーQQがクラッチ入り位置に操作するだけで
自動的にロックされて便利であるが、クラッチ操作レバ
ーCIQを入り位置に維持操作しながら走行することと
、入シ位置にロックして走行することを選択できるよう
に、ロック爪を作用位置と解除位置とに人為切換えする
ように構成して実施してもよい。そして、この場合、ロ
ック爪が後進時に作用不能状態になるように構成するこ
とにょシ、ロック爪が作用位置′」に誤操作され、手放
しにかかわらず走行停止しなくなることを防止でき、後
進時の安全を確保できるのである。
When the lock pawl (A) is biased toward the action side as in the above embodiment, it is convenient because the operating lever QQ is automatically locked just by operating it to the clutch engaged position, but the clutch operating lever CIQ is maintained in the engaged position. The locking claw may be configured to be manually switched between the operating position and the release position so that the user can select between driving while operating the vehicle and driving while locked in the engaged position. In this case, by configuring the lock pawl to be inoperative when reversing, it is possible to prevent the lock pawl from being erroneously operated to the working position and not being able to stop regardless of whether the driver releases the hand, and when reversing. Safety can be ensured.

前記ロック爪は、クラッチ操作レバーに直接に作用する
もの等具体構成が種々異なるものに変更可能であり、こ
れらをロック機構(イ)と総称する。
The lock pawl can be modified to have various specific configurations, such as one that directly acts on the clutch operating lever, and these are collectively referred to as a lock mechanism (a).

ロック機構を後進時に作用不能状態にするのに、トラン
スミッションの状態を検出するセンサーと、このセンサ
ーからの情報に基いて所定時にロック機構を作用解除状
態に自動固定する操作装置とから成る電気構成等を採用
してもよく、これらを前後進切換え装置の後進状態にお
いてロック機構を作用不能状態にする操作機構(4)と
総称する。
An electrical configuration consisting of a sensor that detects the state of the transmission and an operating device that automatically locks the lock mechanism in the disengaged state at a predetermined time based on information from this sensor to disable the lock mechanism when going in reverse. These may be collectively referred to as an operating mechanism (4) that disables the locking mechanism when the forward/reverse switching device is in the reverse state.

主クラッチQ優は、走行専用のクラッチや咬合式等に変
更=]’能であり、これらを走行用クラッチaΦと総称
する。
The main clutch Q can be changed to a traveling-only clutch or an engagement type clutch, and these are collectively referred to as a traveling clutch aΦ.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本発明に係る歩行型移動農機の実施例を示し、第
1図は全体側面図、第2図は主クラッチ及び変速レバー
とクラッチレバ−の連係系統図、第3図及び第4図はレ
リーズワイヤ作用の説明図である。 (3)・ 操縦ハンドル、(3a)・・・・・ハンドル
握す部、U、f 前後進切換え装置、0Φ・・・・走行
用クラッチ、Q(2)・ ・クラッチ操作レバー、(2
)・・・ロック機構、(イ)・・・・前後進切換え装置
操作レバー、■・・・操作機構、(ON)・・・・・・
クラッチ入り位置、(OF”F)・・・ クラッチ切り
位置。
The drawings show an embodiment of the walking-type mobile agricultural machine according to the present invention, in which Fig. 1 is an overall side view, Fig. 2 is a linkage system diagram of the main clutch, speed change lever, and clutch lever, and Figs. 3 and 4 are It is an explanatory view of release wire action. (3)・Control handle, (3a)・・Handle grip part, U, f Forward/forward switching device, 0Φ・・Travel clutch, Q(2)・・Clutch operation lever, (2
)... Lock mechanism, (a)... Forward/forward switching device operating lever, ■... Operating mechanism, (ON)...
Clutch engaged position, (OF"F)... Clutch disengaged position.

Claims (1)

【特許請求の範囲】 ■ 走行用クラッチaψの操作レバーQQをクラッチ切
り位fj (OFF)に付勢された状態で設けると共に
、前記操作レバー(1すをクラッチ入シ位置(ON)に
固定する解除操作自在がロック機構曽を設けた歩行型移
動農機であって、前記操作レバー utu を握り操作
によシフラッチ入り位ii#(ON)になる状態で操縦
ハンドル(3)の握シ部(3[1)付近に配f〜すると
共に、前記ロック機構局を作用不能状態にする操作機構
に)を、前後進切換え装置q4に対してこれの後進状態
においてのみ自動的に作用するように連係させた状態で
設けである歩行型移動農機。 ■ 前記ロック機構(イ)が作用側に付勢されている特
許請求の範囲第0項に記載の歩行型移動農機。 qリ 前記i+′i4作機措翰が前記ロック機構に)を
前記前後進切換え装置Q4の操作レバーに)に対してこ
れが後進位置に在ると作用解除位置になる状態に連動さ
せたレリーズワイヤである特許請求の範囲第0項又は第
(2)項に記載の歩行型移動農機。
[Claims] ■ The operating lever QQ of the traveling clutch aψ is provided in a state where it is biased to the clutch disengaged position fj (OFF), and the operating lever (1) is fixed at the clutch engaged position (ON). This is a walk-behind mobile agricultural machine equipped with a locking mechanism that can be freely released, and when the operating lever utu is gripped and operated to shift to the shift latch engaged position ii# (ON), the grip portion (3) of the operating handle (3) is [1) An operating mechanism disposed nearby f~ and rendering the locking mechanism station inoperable) is linked to the forward/reverse switching device q4 so as to automatically act only in its reverse state. A walking-type mobile agricultural machine that is installed in a (2) The walking type mobile agricultural machine according to claim 0, wherein the locking mechanism (a) is biased toward the action side. qli A release wire in which the i+'i4 operating mechanism (i+'i4) is linked to the locking mechanism (to the operating lever of the forward/reverse switching device Q4) so that when it is in the reverse position, it becomes an action release position. A walking-type mobile agricultural machine according to claim 0 or (2).
JP4797784A 1984-03-12 1984-03-12 Walking type movable agricultural machine Pending JPS60191829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4797784A JPS60191829A (en) 1984-03-12 1984-03-12 Walking type movable agricultural machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4797784A JPS60191829A (en) 1984-03-12 1984-03-12 Walking type movable agricultural machine

Publications (1)

Publication Number Publication Date
JPS60191829A true JPS60191829A (en) 1985-09-30

Family

ID=12790370

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4797784A Pending JPS60191829A (en) 1984-03-12 1984-03-12 Walking type movable agricultural machine

Country Status (1)

Country Link
JP (1) JPS60191829A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02103832U (en) * 1989-02-06 1990-08-17
JPH04110235A (en) * 1990-08-30 1992-04-10 Kubota Corp Main clutch operating structure of walking type controller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02103832U (en) * 1989-02-06 1990-08-17
JPH04110235A (en) * 1990-08-30 1992-04-10 Kubota Corp Main clutch operating structure of walking type controller

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