JPH066410B2 - Reverse work restraint system for walking type agricultural machinery - Google Patents
Reverse work restraint system for walking type agricultural machineryInfo
- Publication number
- JPH066410B2 JPH066410B2 JP60100905A JP10090585A JPH066410B2 JP H066410 B2 JPH066410 B2 JP H066410B2 JP 60100905 A JP60100905 A JP 60100905A JP 10090585 A JP10090585 A JP 10090585A JP H066410 B2 JPH066410 B2 JP H066410B2
- Authority
- JP
- Japan
- Prior art keywords
- clutch
- lever
- restraining member
- side restraining
- speed change
- 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.)
- Expired - Lifetime
Links
Landscapes
- Soil Working Implements (AREA)
- Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 この発明は歩行型農機における後進作業牽制装置に関す
るもので、操作員の足元の直前に作業機の作業部が位置
する作業状態では、後進走行操作が阻止されるように構
成して作業部に操作員が接触する危険を防止せんとする
ものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reverse work restraint system for a walk-behind agricultural machine. In a working state in which the working unit of the working machine is located immediately before the operator's feet, the backward running operation is not possible. It is designed to prevent the risk of operator contact with the working unit.
従来の技術 走行型農機の操行ハンドルを、作業機側又は、これに逆
側に振替えて夫々セットできるものにあっては、作業機
の作業部に接近した位置にある操作員は作業部に接触し
易い危険があり、操作員が作業部よりも先頭位置となる
後進走行では、操作員の注意が作業部及び歩行型農機に
側に向けられることが少なくなるので、接触事故防止の
ためには、後進の際に作業部を駆動できないように構成
する必要がある。2. Description of the Related Art In the case where the operation handle of a traveling agricultural machine can be set to the working machine side or the opposite side by setting, the operator who is close to the working part of the working machine contacts the working part. In the backward running where the operator is at the forefront position than the working part, the operator's attention is less likely to be directed to the working part and the walk-behind agricultural machine. It is necessary to configure so that the working unit cannot be driven when moving backward.
然るに従来は、操作ハンドルを作業機側又はこれと逆側
に振替えて夫々セットできるようにした歩行型農機に
は、後進時に於て、作業部の駆動を阻止できるようにし
たものはないが、レバー側牽制部材とクラッチ側牽制部
材を設けた後進作業牽制装置は実開昭５７−１３８７４
５号に開示されている。而して、該後進作業牽制装置は
同公報に示す如く、前後進切換レバー（７）の後進操作
位置（Ｒ）への移動を阻止するための牽制具（１３）
を、耕耘装置（５）の駆動を入切するための耕耘クラッ
チレバー（１１）が入り操作位置（Ｋ1）にある時に牽
制解除状態に自動的に切換えるように、前記耕耘クラッ
チレバー（１１）に連係させた歩行型耕耘機の後進耕耘
牽制装置であって、該牽制具（１３）と前記耕耘クラッ
チレバー（１１）とを連係するに、前記牽制具（１３）
を牽制解除がわに付勢するスプリング（１４）が設けて
あり、更に、前記牽制具（１３）を該付勢力に抗して牽
制状態に押圧するカム（１５）を前記耕耘クラッチレバ
ー（１１）に対して機械式連係機構（１６）（１６）を
介して接続させて成るものである。However, conventionally, there is no walking type agricultural machine capable of setting the operating handle on the working machine side or the side opposite to the working machine side to prevent the driving of the working section at the time of reverse travel, The reverse work restraint device equipped with the lever-side restraint member and the clutch-side restraint member is actually opened in Sho 57-13874.
No. 5 is disclosed. Thus, as shown in the publication, the reverse work restraint device is a restraint (13) for preventing the forward / reverse switching lever (7) from moving to the reverse operation position (R).
The plowing clutch lever (11) is automatically switched to the restraint release state when the plowing clutch lever (11) for turning on and off the drive of the tilling device (5) is in the ON operation position (K 1 ). A backward cultivating and restraining device for a walking type tiller linked to the above, wherein the restraining device (13) and the tilling clutch lever (11) are linked to each other.
There is provided a spring (14) for urging the restraint release to the alligator, and further, a cam (15) for pushing the restraint tool (13) to the restraint state against the urging force is provided with the tilling clutch lever (11). ) Is connected via a mechanical linkage mechanism (16) (16).
発明が解決しようとする課題 而して、前記公報記載の後進作業牽制装置は構成要素が
多く、従って組付工数も多く、コスト高の要因となる。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention Therefore, the backward work restraint system described in the above-mentioned publication has many constituent elements, and therefore has many man-hours for assembling, which causes a high cost.
そこで、操作ハンドルを作業機側又はこれと逆側に振替
えてセットできるようにした歩行型農機に於て、簡単な
構成要素で組付も容易であり、且つ、コストダウンにも
寄与できる後進作業牽制装置を得るために解決せらるべ
き技術的課題が生じてくるのであり、本発明は該課題を
解決することを目的とする。Therefore, in a walk-behind agricultural machine in which the operation handle can be set by transferring to the work machine side or the opposite side, it is easy to assemble with simple components, and backward work that can also contribute to cost reduction The technical problem to be solved in order to obtain the restraint device arises, and the present invention aims to solve the problem.
課題を解決するための手段 この発明は上記目的を達成するために提案せられたもの
であり、作業機（３）を連結している歩行型農機（１）
の操向ハンドル（４）及び走行変速用の変速レバー
（７）の夫々を作業機側に、又はこれと逆側に振替えて
夫々セットできるように設け、作業機（３）の作業部駆
動用のクラッチ部が作業機側に設けてあり、且つ、前記
変速レバー（７）にレバー側牽制部材（２９）を設け、
クラッチ部にはクラッチ切入動作に伴って動作をするよ
うにしたクラッチ側牽制部材（２８）を設け、前記変速
レバー（７）が作業機側にセットされているときに、後
進状態におけるクラッチ部のクラッチ入操作及びクラッ
チ入動作中における変速レバー（７）の後進操作を共に
阻止できるようレバー側牽制部材（２９）及びクラッチ
側牽制部材（２８）を構成した歩行型農機に於て、前記
レバー側牽制部材（２９）は変速レバー（７）に一体的
に取り付けられ、且つ、該レバー側牽制部材（２９）の
先端部（２９ａ）は折曲されており、一方、クラッチ側
牽制部材（２８）はロッドにて形成され、その端部がカ
バー（２０）に開穿した孔（２０ａ）に挿通されて前記
レバー側牽制部材（２９）の先端部（２９ａ）に当接で
きるように構成され、更に、該クラッチ側牽制部材（２
８）は長さ調節機構（Ｗ）を介して長さ調節可能に形成
され、且つ、変速レバー（７）を作業機（３）側と反対
側に振替えたとき、前記牽制が解除せられるように構成
されたことを特徴とする歩行型農機における後進作業牽
制装置を提供するものである。Means for Solving the Problems The present invention has been proposed in order to achieve the above object, and is a walking type agricultural machine (1) connecting a working machine (3).
The steering handle (4) and the gear shift lever (7) for traveling speed change are installed on the working machine side or on the opposite side so that they can be set respectively to drive the working unit of the working machine (3). Is provided on the working machine side, and the shift lever (7) is provided with a lever side restraining member (29),
The clutch portion is provided with a clutch side check member (28) adapted to operate in association with the clutch disengagement operation, and when the shift lever (7) is set to the working machine side, the clutch portion in the reverse drive state A walk-behind agricultural machine comprising a lever-side restraining member (29) and a clutch-side restraining member (28) so as to prevent both the clutch engaging operation and the reverse operation of the speed change lever (7) during the clutch engaging operation. The check member (29) is integrally attached to the speed change lever (7), and the tip (29a) of the lever side check member (29) is bent, while the clutch side check member (28) is provided. Is formed of a rod, and the end of the rod is inserted into a hole (20a) opened in the cover (20) so that it can abut the tip (29a) of the lever-side restraining member (29). Further, the clutch-side restraining member (2
8) is formed so that the length can be adjusted via the length adjusting mechanism (W), and when the speed change lever (7) is transferred to the side opposite to the working machine (3) side, the restraint is released. The invention provides a reverse work restraint device for a walk-behind agricultural machine, which is characterized in that:
作用 歩行型農機であって、且つ、操向ハンドル（４）及び変
速レバー（７）を夫々作業機側にセットし、そして、変
速レバー（７）が後進側にセットされるときは、先ず、
変速レバー（７）を作業機（３）側に操作すれば、該変
速レバー（７）と一体に固着されているレバー側牽制部
材（２９）がカバー（２０）に設けた孔（２０ａ）に接
近し、該レバー側牽制部材（２９）の先端部（２９ａ）
即ち、側方へ折曲された該先端部（２９ａ）が前記孔
（２０ａ）に接近した状態まで移動する。そこで、後進
時に於て、作業機（３）のクラッチ部のクラッチ入操作
をしようとしても、該クラッチ入操作に従ってクラッチ
側牽制部材（２８）の先端部は前記カバー（２０）に開
穿された孔（２０ａ）に接近してセットされている前記
クラッチ側牽制部材（２８）の先端部（２９ａ）に衝突
して該孔（２０ａ）より内部に深く侵入することはでき
ない。斯くして、変速レバー（７）を後進に切換えてい
るときは、作業機（３）はクラッチ切状態が維持されて
作業部が駆動されることはない。Action When the machine is a walking type agricultural machine, and the steering handle (4) and the speed change lever (7) are set on the working machine side respectively, and the speed change lever (7) is set on the reverse side, first,
When the speed change lever (7) is operated to the working machine (3) side, the lever side restraining member (29) integrally fixed to the speed change lever (7) is inserted into the hole (20a) provided in the cover (20). Approaching, the tip (29a) of the lever side restraining member (29)
That is, the tip portion (29a) bent sideways moves to a state of approaching the hole (20a). Therefore, even when trying to engage the clutch of the clutch portion of the working machine (3) during reverse travel, the tip of the clutch side restraining member (28) is opened by the cover (20) in accordance with the clutch engaging operation. It cannot collide with the tip portion (29a) of the clutch side restraining member (28) set close to the hole (20a) and penetrate deeper into the inside than the hole (20a). Thus, when the speed change lever (7) is switched to the reverse, the working machine (3) is maintained in the clutch disengaged state and the working unit is not driven.
又、変速レバー（７）を前進側に切換えたときには、前
記レバー側牽制部材（２９）の先端部（２９ａ）は前記
孔（２０ａ）より遠く離れることになるので、前記作業
部のクラッチを入操作するとき、該入操作に伴ってクラ
ッチ側牽制部材（２８）の先端部は前記孔（２０ａ）よ
り深く侵入することができるので、該作業部の駆動に支
障を来さない。Further, when the speed change lever (7) is switched to the forward side, the tip portion (29a) of the lever side restraining member (29) is farther from the hole (20a), so the clutch of the working portion is engaged. When operating, the tip of the clutch-side restraining member (28) can penetrate deeper than the hole (20a) in accordance with the entering operation, so that driving of the working unit is not hindered.
このとき、該変速レバー（７）を後進側に入れるようと
するときには、前記クラッチ側牽制部材（２８）の先端
部が孔（２０ａ）より深く侵入しているので、該変速レ
バー（７）に一体的に固着しているレバー側牽制部材
（２９）の先端部（２９ａ）が前記クラッチ側牽制部材
（２８）の先端部に衝突することになり、依って変速レ
バー（７）を後進側に切換えすることはできない。斯く
して、作業機の近くに位置する操作員が後向きに操作歩
行する場合には作業部が駆動されないので、操作員の安
全が確保される。At this time, when the shift lever (7) is to be put in the reverse direction, the tip end of the clutch side restraining member (28) is deeper than the hole (20a), so that the shift lever (7) is pushed into the shift lever (7). The tip portion (29a) of the lever-side check member (29), which is integrally fixed, collides with the tip portion of the clutch-side check member (28), so that the shift lever (7) is moved to the reverse side. It cannot be switched. In this way, when the operator located near the working machine walks backward, the working unit is not driven, so that the safety of the operator is ensured.
又、前記クラッチ側牽制部材（２８）はロッドにて形成
され、且つ、長さ調節機構（Ｗ）によって長さを自在に
調節できるので、前記後進作業牽制装置の調整も容易に
行うことができ、該牽制が確実に行われる。Further, since the clutch-side restraining member (28) is formed of a rod and the length can be freely adjusted by the length adjusting mechanism (W), the adjustment of the reverse work restraining device can be easily performed. Therefore, the restraint is surely performed.
更に、前記変速レバー（７）を作業機（３）側と反対側
に振替えたときには、前記レバー側牽制部材（２９）が
変速レバー（７）と一体的に固着されているので、該変
速レバー（７）の振替動作に伴って該レバー側牽制部材
（２９）の先端部（２９ａ）も作業機（３）側と反対側
に回動することになるから、作業機（３）側のクラッチ
の入切動作に伴う前記クラッチ側牽制部材（２８）の先
端部の摺動動作中に於て、該先端部に衝突するものはな
くなることになり、依って、前記牽制が解除せられるこ
とになる。Further, when the speed change lever (7) is transferred to the side opposite to the working machine (3) side, the lever side check member (29) is integrally fixed to the speed change lever (7), and therefore the speed change lever (7) is fixed. Since the tip portion (29a) of the lever side restraining member (29) also rotates to the side opposite to the working machine (3) side with the transfer operation of (7), the clutch on the working machine (3) side. During the sliding operation of the tip of the clutch side restraining member (28) associated with the on / off movement of the clutch, nothing collides with the tip, so that the restraint is released. Become.
実施例 次にこの発明の一実施例を図に基づいて説明する。Embodiment Next, an embodiment of the present invention will be described with reference to the drawings.
第２図に全体側面視を、第１図にその要部縦断側面視
を、第３図に第２図の要部平面視を、第４図には第１図
のＡ矢視を夫々示したが、歩行型農機(1)のヒッチ(2)に
はロータリ耕耘装置の如き作業機(3)が連結され、歩行
型農機(1)の操行ハンドル(4)の向きをミッションケース
である農機機体(5)に対して第２図のように作業機(3)の
側に、又は図示は省略しているが、作業機(3)とは逆の
側に夫々振替えた位置で固定できるように設けてあり、
走行変速機構(6)を操作するための変速レバー(7)は、農
機機体(5)の例えば左外側方に、その立設部(7a)が位置
するように設けてあり、支軸(8)の廻りに上下方向に揺
動できるようにレバーサポート(9)を設け、レバーサポ
ート(9)の２又部には筒体(10)を、その筒心廻りに回動
のみ自在であるように嵌合し、変速レバー(7)の立設部
(7a)を筒体(10)にスプライン嵌合したものであって、変
速レバー(7)の把手部(7b)は第１図と第２図に示すよう
に作業機(3)の側に位置するように、又は図示を省略し
ているが筒体(10)に対して変速レバー(7)をばね(11)に
抗して引上げてスプライン嵌合を外したうえ、把手部(7
b)を同上図の位置に対して約１８０°だけ回動した位置
にて再びスプライン嵌合にて筒体(10)に固定した位置
に、即ち、作業機(3)の側とは逆の側に夫々セットでき
るように設けてあり、走行変速機構(6)の高速用のシフ
タステー(12)と低速用のシフタステー(13)にシフタボス
(14)，(15)が夫々設けてあり、筒体(10)と１体のチェン
ジアーム(16)が、変速レバー(7)の支軸(8)の廻りの上下
揺動に伴ってシフタボス(14)又は(15)に択一に係合する
ことになり、この係合状態にあるとき、把手部(7b)を第
１図にて紙面から裏面に向う方向（第３図では下方から
上方に向う方向）に立設部(7a)の中心軸廻りに回動操作
することによって、チェンジアーム(16)が第１図の裏面
から紙面に向って回動して当該シフタボスとシフタステ
ーを、前進方向、即ち、走行型農機(1)が作業機(3)を後
側とする方向に移動操作することになり、逆に把手部(7
b)を同図の裏面から紙面に向って回動するときは、チェ
ンジアーム(16)は当該シフタボスとシフタステーを、後
進方向に操作することになるように走行変速機構(6)が
構成されている。FIG. 2 is a side view of the whole, FIG. 1 is a side view of a longitudinal section of a main part thereof, FIG. 3 is a plan view of the main part of FIG. 2, and FIG. 4 is a view of an arrow A of FIG. However, a working machine (3) such as a rotary tiller is connected to the hitch (2) of the walking type agricultural machine (1), and the operating handle (4) of the walking type agricultural machine (1) is oriented toward the mission case. It can be fixed to the working machine (3) side as shown in FIG. 2 with respect to the machine body (5), or, though not shown, at the side opposite to the working machine (3) at the respective transfer positions. It is provided in
A speed change lever (7) for operating the traveling speed change mechanism (6) is provided, for example, on the left outer side of the agricultural machine body (5) so that its upright portion (7a) is located, and the support shaft (8 ) Is provided with a lever support (9) so that the lever support (9) can be swung in the vertical direction, and a cylindrical body (10) is provided at the two-forked part of the lever support (9), and it is only rotatable around its cylinder center. The gear shift lever (7)
(7a) is spline-fitted to the cylindrical body (10), and the handle portion (7b) of the speed change lever (7) is located on the side of the working machine (3) as shown in FIGS. 1 and 2. Although not shown, the transmission lever (7) is pulled up against the cylinder (10) against the spring (11) to disengage the spline, and then the handle (7
At the position where b) is rotated by about 180 ° with respect to the position shown in the same figure, it is fixed to the cylinder body (10) by spline fitting again, that is, opposite to the working machine (3) side. The shifter bosses are attached to the high-speed shifter stays (12) and low-speed shifter stays (13) of the traveling speed change mechanism (6) so that they can be set separately.
(14) and (15) are provided respectively, and the cylindrical body (10) and the single change arm (16) move up and down around the support shaft (8) of the speed change lever (7) to shift the boss. In this engagement state, the handle portion (7b) is directed from the paper surface to the back surface in FIG. 1 (from below in FIG. 3). By rotating about the central axis of the standing portion (7a) in the upward direction), the change arm (16) rotates toward the paper surface from the back surface of FIG. 1 to move the shifter boss and the shifter stay, In the forward direction, that is, the traveling type agricultural machine (1) is moved and operated in the direction in which the working machine (3) is on the rear side, and conversely, the handle part (7
When the b) is rotated from the back side of the figure toward the paper surface, the traveling arm mechanism (6) is configured so that the change arm (16) operates the shifter boss and the shifter stay in the backward direction. There is.
作業機(3)に設けてある耕耘爪の如き作業部(17)は、作
業機駆動ケース(18)に内装されている巻掛伝導機構によ
って駆動されるが、歩行型農機(1)のエンジン(19)の動
力は、カバー(20)にて覆われているベルト伝導機構によ
って農機機体(5)内の変速機構と、作業機駆動ケース(1
8)内のクラッチ部を介して上記巻掛伝導機構に伝えられ
るように設けてあり、このクラッチ部をクラッチ切入操
作するためのクラッチ操作アーム(21)は、操向ハンドル
(4)に設けてあるクラッチレバー(22)へ操作ワイヤ(23)
によって連結されていて、クラッチレバー(22)をにぎり
しめたときは操作ワイヤ(23)が引張られてクラッチ操作
アーム(21)が第１図の実線で示すクラッチ切位置とな
り、クラッチレバー(22)を操作しないときは、操作ワイ
ヤ(23)がゆるんで同上図の２点鎖線で示すクラッチ入位
置となるように構成されている。The working part (17) such as a tilling claw provided in the working machine (3) is driven by the winding transmission mechanism installed in the working machine drive case (18), but the engine of the walking type agricultural machine (1) is used. The power of (19) is transmitted by the belt transmission mechanism covered by the cover (20) to the speed change mechanism in the agricultural machine body (5) and the work machine drive case (1).
The clutch operating arm (21) is provided so that it can be transmitted to the above-mentioned winding transmission mechanism via the clutch part in (8).
Operation wire (23) to the clutch lever (22) provided on (4)
When the clutch lever (22) is squeezed, the operating wire (23) is pulled and the clutch operating arm (21) is in the clutch disengaged position shown by the solid line in FIG. When not operated, the operation wire (23) is loosened so as to be in the clutch engagement position shown by the chain double-dashed line in the above figure.
操作ワイヤ(23)のアウタチューブ(24)の前端部は、作業
機駆動ケース(18)に取付けている止めピン(25)に固定さ
れているが、Ｌ字状レバー(26)の筒状基部(26a)を止め
ピン(25)へ回動のみ自在に嵌合し、Ｌ字状レバー(26)の
１方の腕(26b)とクラッチ操作アーム(21)とをロッド(2
7)にて連結し、Ｌ字状レバー(26)の他方の腕(26c)に棒
状のクラッチ側牽制部材(28)の後端部を係止し、カバー
(20)に設けた孔(20a)にクラッチ側牽制部材(28)の前部
を遊挿し、変速レバー(7)の立設部(7a)にクラッチ操作
アーム(21)が第１図の実線の如くクラッチ切位置にある
ときは、クラッチ側牽制部材(28)は第１図，第３図の実
線で示したようにカバー(20)内にわづかに突出すること
になって、変速レバー(7)を前進又は後進方向の何れに
操作したときでも、レバー側牽制部材(29)にクラッチ側
牽制部材(28)が衝突することは無いが、クラッチ操作ア
ーム(21)をクラッチ入位置に置くときは、同上各図の２
点鎖線のようにクラッチ側牽制部材(28)がカバー(20)内
に充分に突出することになって、把手部(7b)が作業機
(3)の側にセットされているときの変速レバー(7)の中立
位置におけるレバー側牽制部材(29)の側方にクラッチ側
牽制部材(28)の前端部がのぞむことになり、このため、
中立位置にある変速レバー(7)を後進位置へ回動操作せ
んとしても、レバー側牽制部材(29)がクラッチ側牽制部
材(28)に衝突するので、上記後進位置への回動操作は阻
止されることになり、又、変速レバー(7)が後進位置に
あるときはレバー側牽制部材（２９）は、第３図の一点
鎖線のようにクラッチ側牽制部材(28)の出入軌跡をその
先端部(29a)が塞ぐことになるので、クラッチ切位置に
あるクラッチ操作アーム(21)のクラッチ入位置への操作
は、先端部(29a)にクラッチ側牽制部材(28)の先端部が
衝突することによって阻止されることになるように構成
している。The front end of the outer tube (24) of the operation wire (23) is fixed to a retaining pin (25) attached to the working machine drive case (18), but the tubular base of the L-shaped lever (26). (26a) is rotatably fitted to the stop pin (25), and one arm (26b) of the L-shaped lever (26) and the clutch operating arm (21) are connected to the rod (2
7), connect the rear end of the rod-shaped clutch-side restraining member (28) to the other arm (26c) of the L-shaped lever (26), and cover.
The front portion of the clutch side restraining member (28) is loosely inserted into the hole (20a) provided in (20), and the clutch operating arm (21) is attached to the standing portion (7a) of the speed change lever (7) by the solid line in FIG. When the clutch is in the clutch disengaged position as shown in FIG. 5, the clutch-side restraining member (28) gradually protrudes into the cover (20) as shown by the solid lines in FIGS. The clutch side restraining member (28) does not collide with the lever side restraining member (29) when the (7) is operated in either the forward or reverse direction, but the clutch operating arm (21) is set to the clutch engaged position. When placing it, please refer to 2 in each figure above.
The clutch-side restraining member (28) is sufficiently projected into the cover (20) as shown by the dotted line, so that the handle (7b) is
The front end of the clutch-side restraining member (28) looks into the side of the lever-side restraining member (29) at the neutral position of the speed change lever (7) when it is set to the (3) side. ,
Even if the gear shift lever (7) in the neutral position is not operated to rotate to the reverse position, the lever-side check member (29) collides with the clutch-side check member (28), so the rotation operation to the reverse position is prevented. Further, when the speed change lever (7) is in the reverse position, the lever-side check member (29) follows the trajectory of the clutch-side check member (28) as shown by the dashed line in FIG. Since the tip (29a) will be blocked, when the clutch operating arm (21) in the clutch disengaged position is operated to the clutch engaged position, the tip of the clutch side restraining member (28) collides with the tip (29a). It is configured to be blocked by doing.
したがって操向ハンドル(4)及び変速レバー(7)を、第１
図と第２図の図示位置とは逆の側、即ち、作業機(3)か
ら遠くなる側にセットしたときは、図示は省略したがレ
バー側牽制部材（２９）は、クラッチ側牽制部材(28)か
ら全く離れた位置となるので、後進状態でのクラッチ入
による作業は全く制限されること無く行われることにな
る。Therefore, set the steering handle (4) and the speed change lever (7) to the first position.
When set on the side opposite to the position shown in the drawing and FIG. 2, that is, on the side farther from the working machine (3), the lever-side restraining member (29) is not shown, but the lever-side restraining member (29) is the clutch-side restraining member ( Since it is located far away from 28), work with the clutch engaged in the reverse drive state can be performed without any restrictions.
図示例のクラッチ側牽制部材(28)は、その先端部をカバ
ー(20)に設けた孔(20a)へ遊挿することによって１の方
向にのみ移動するようにしているので、作業機(3)装着
の際のクラッチ側牽制部材(28)の組込みは、Ｌ字状レバ
ー(26)に係止されているクラッチ側牽制部材(28)の上記
先端部を孔(20a)に挿し込むことによってほぼ終ること
になるものであって、このように極めて簡易に組込むこ
とができる。The clutch-side restraining member (28) in the illustrated example is moved only in one direction by inserting the tip end thereof into the hole (20a) provided in the cover (20), so that the working machine (3 ) Assembling of the clutch side restraining member (28) at the time of mounting is performed by inserting the tip end of the clutch side restraining member (28) locked to the L-shaped lever (26) into the hole (20a). It is almost over, and it can be installed very easily in this way.
尚、クラッチ側牽制部材(28)は、長さ調節機構（Ｗ）に
よって長さが自在に調節される。即ち、該クラッチ側牽
制部材（２８）は棒状の２つの部材片を互にスライドさ
せてボルト(36)にセットすることによってその長さを調
節できると共に、カバー(20)の孔(20a)への上記挿し込
み又は取外しを容易としている。The length of the clutch side restraining member (28) is freely adjusted by the length adjusting mechanism (W). That is, the clutch-side restraining member (28) can be adjusted in length by sliding two rod-shaped member pieces on each other and setting them on the bolt (36), and at the same time, to the hole (20a) of the cover (20). It is easy to insert or remove the above.
発明の効果 本発明は、作業機（３）を連結している歩行型農機
（１）の操向ハンドル（４）と変速レバー（７）の夫々
を作業機側又はこれと逆側に振替えて夫々セットできる
ようにした歩行型農機であって、且つ、レバー側牽制部
材（２９）とクラッチ側牽制部材（２８）を設け、之等
双方の衝突動作によって後進作業牽制を為すようにした
ものであるが、該レバー側牽制部材（２９）は変速レバ
ーと一体的に固着されてその先端部（２９ａ）が折曲さ
れてカバー（２０）に設けた孔（２０ａ）に接近自在に
形成されており、一方、作業部のクラッチの入切動作に
伴ってカバー（２０）の前記孔（２０ａ）に挿入されて
摺動自在に形成されたクラッチ側牽制部材（２８）はロ
ッドにて構成され、且つ、長さ調節機構（Ｗ）によって
長さが自在に調節できるので、前記レバー側牽制部材
（２９）に対する衝突程度も自在に調節でき、斯して、
牽制動作の調節も容易となり、更に、レバー側牽制部材
（２９）とクラッチ側牽制部材（２８）の二つの部材に
よって後進牽制装置を形成できるので、部品点数及び組
付工数が少なく、構成が簡素であって動作が正確に行わ
れると共にコストダウンにも寄与する。EFFECTS OF THE INVENTION According to the present invention, the steering handle (4) and the speed change lever (7) of the walking type agricultural machine (1) connecting the working machine (3) are transferred to the working machine side or the opposite side thereof. It is a walking type agricultural machine that can be set respectively, and is provided with a lever side restraint member (29) and a clutch side restraint member (28) so that the backward work restraint can be performed by the collision motions of both. However, the lever-side restraining member (29) is integrally fixed to the gear shift lever, and its tip (29a) is bent so as to be accessible to the hole (20a) provided in the cover (20). On the other hand, on the other hand, the clutch-side restraining member (28), which is slidably formed by being inserted into the hole (20a) of the cover (20) according to the on / off operation of the clutch of the working unit, is composed of a rod, Moreover, the length can be freely adjusted by the length adjustment mechanism (W). The degree of collision with the lever-side restraining member (29) can be freely adjusted, and thus,
Adjustment of the restraint operation becomes easy, and since the reverse restraint device can be formed by the two members of the lever-side restraint member (29) and the clutch-side restraint member (28), the number of parts and the number of assembling steps are small, and the configuration is simple. Therefore, the operation is accurately performed and the cost is reduced.
又、変速レバー（７）を作業機（３）側と反対側に振替
えたときには、前記レバー側牽制部材（２９）の先端部
（２９ａ）が前記孔（２０ａ）の反対側に回動するので
前記牽制が解除され、通常の作業に支障を来すことはな
い。Further, when the speed change lever (7) is transferred to the side opposite to the working machine (3) side, the tip portion (29a) of the lever side check member (29) rotates to the side opposite to the hole (20a). The restraint is released and does not interfere with normal work.
図はこの発明の一実施例を示し、第１図は第２図におけ
る要部縦断側面図、第２図は歩行型農機の全体側面図、
第３図は第２図の要部平面図、第４図は第１図のＡ矢視
図である。 (1)……歩行型農機、(3)……作業機 (4)……操向ハンドル、(7)……変速レバー (28)……クラッチ側牽制部材 (29)……レバー側牽制部材FIG. 1 shows an embodiment of the present invention, FIG. 1 is a vertical sectional side view of an essential part in FIG. 2, and FIG. 2 is an overall side view of a walk-behind agricultural machine.
FIG. 3 is a plan view of an essential part of FIG. 2, and FIG. 4 is a view on arrow A of FIG. (1) …… Walking agricultural machine, (3) …… Working machine (4) …… Steering wheel, (7) …… Shift lever (28) …… Clutch side restraining member (29) …… Lever side restraining member
Claims (1)
（１）の操向ハンドル（４）及び走行変速用の変速レバ
ー（７）の夫々を作業機側に、又はこれと逆側に振替え
て夫々セットできるように設け、作業機（３）の作業部
駆動用のクラッチ部が作業機側に設けてあり、且つ、前
記変速レバー（７）にレバー側牽制部材（２９）を設
け、クラッチ部にはクラッチ切入動作に伴って動作をす
るようにしたクラッチ側牽制部材（２８）を設け、前記
変速レバー（７）が作業機側にセットされているとき
に、後進状態におけるクラッチ部のクラッチ入操作及び
クラッチ入動作中における変速レバー（７）の後進操作
を共に阻止できるようレバー側牽制部材（２９）及びク
ラッチ側牽制部材（２８）を構成した歩行型農機に於
て、前記レバー側牽制部材（２９）は変速レバー（７）
に一体的に取り付けられ、且つ、該レバー側牽制部材
（２９）の先端部（２９ａ）は折曲されており、一方、
クラッチ側牽制部材（２８）はロッドにて形成され、そ
の端部がカバー（２０）に開穿した孔（２０ａ）に挿通
されて前記レバー側牽制部材（２９）の先端部（２９
ａ）に当接できるように構成され、更に、該クラッチ側
牽制部材（２８）は長さ調節機構（Ｗ）を介して長さ調
節可能に形成され、且つ、変速レバー（７）を作業機
（３）側と反対側に振替えたとき、前記牽制が解除せら
れるように構成されたことを特徴とする歩行型農機にお
ける後進作業牽制装置。1. A steering handle (4) of a walk-behind agricultural machine (1) connecting a working machine (3) and a speed change lever (7) for traveling speed shift, respectively, to the working machine side or vice versa. Side of the work machine (3) is provided with a clutch portion for driving the work section of the work machine (3), and a lever side restraining member (29) is provided on the speed change lever (7). A clutch-side restraining member (28) is provided in the clutch portion so as to operate in association with the clutch disengagement operation, and the clutch in the reverse drive state is set when the speed change lever (7) is set to the working machine side. In the walking type agricultural machine, the lever-side restraining member (29) and the clutch-side restraining member (28) are configured so as to prevent both the clutch engaging operation and the reverse operation of the speed change lever (7) during the clutch engaging operation. Lever side restraining member 29) the shift lever (7)
Is integrally attached to the lever-side restraining member (29), and the tip portion (29a) of the lever-side restraining member (29) is bent.
The clutch-side restraining member (28) is formed of a rod, and the end portion of the clutch-side restraining member (28) is inserted into the hole (20a) opened in the cover (20) so that the tip portion (29) of the lever-side restraining member (29) is formed.
a), the clutch-side restraining member (28) is formed to be adjustable in length via a length adjusting mechanism (W), and the gear shift lever (7) is attached to the working machine. A reverse work restraint device for a walk-type agricultural machine, characterized in that the restraint is released when the transfer is made to the side opposite to the (3) side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60100905A JPH066410B2 (en) | 1985-05-13 | 1985-05-13 | Reverse work restraint system for walking type agricultural machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60100905A JPH066410B2 (en) | 1985-05-13 | 1985-05-13 | Reverse work restraint system for walking type agricultural machinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61261131A JPS61261131A (en) | 1986-11-19 |
| JPH066410B2 true JPH066410B2 (en) | 1994-01-26 |
Family
ID=14286355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60100905A Expired - Lifetime JPH066410B2 (en) | 1985-05-13 | 1985-05-13 | Reverse work restraint system for walking type agricultural machinery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH066410B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106576449B (en) * | 2016-12-30 | 2023-02-03 | 重庆华世丹机械制造有限公司 | Multifunctional micro-tillage machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6225378Y2 (en) * | 1981-02-24 | 1987-06-29 |
-
1985
- 1985-05-13 JP JP60100905A patent/JPH066410B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61261131A (en) | 1986-11-19 |
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