JPH0731231A - Operative structure in rice transplanter - Google Patents

Abstract

PURPOSE:To provide a rice transplanter so designed that the switching selective operation for line drawing markers and working clutch-letting-in operation can be conducted with one operative implement, and a single operation is possible and misoperation can also be prevented. CONSTITUTION:The objective operative structure is so designed that a seedling planting device 2 is connected in a vertically movable way relative to a traveling machine body and mechanical power is transmitted from the traveling machine body side, via a working clutch 8, to the seedling planting device 2. This operative structure is also designed to be switchable between (A) such an action mode that line drawing markers 12, 12 to draw traveling marks on the farm surface on both left and right sides of the device 2 for the purpose of the next working stroke can be set at an action posture to be projected externally and (B) such a housing mode as to hold said markers in a posture to be retreated into the machine body. Besides, this operative structure is equipped with such an operative tool 31 in the control section 46 of the machine body that either of said markers 12, 12 is selectively switched to action mode by normal/reverse swinging operation from neutral position to a specified direction and the working clutch 8 is put to letting-in operation by swinging operation in a direction crossing over the above specified direction.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、走行機体に対して昇降
自在に苗植付装置を連結し、走行機体側から作業クラッ
チを介して前記苗植付装置に動力を伝達するよう構成す
るとともに、前記苗植付装置の左右両側に次回作業行程
における圃場面に走行指標を描く線引きマーカを外方突
出する作用姿勢に設定可能な作用状態と機体内方に引退
する姿勢に保持する格納状態とに切り換え自在に設けて
ある田植機の操作構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is configured to connect a seedling planting device to a traveling machine body so as to be able to move up and down, and to transmit power from the traveling machine body side to the seedling planting machine through a work clutch. A working state in which a line-drawing marker that draws a running index in a field scene in the next work process can be set to an action posture that projects outward and a storage state that keeps the posture to retreat toward the inside of the body The present invention relates to an operation structure of a rice transplanter that is switchably provided.

【０００２】[0002]

【従来の技術】上記田植機において、従来では、中立位
置から正逆操作することで左右両線引きマーカのうちの
いずれかを選択的に作用状態に切り換えるための切換操
作具を設けるとともに、この切換操作具の左右いずれか
の線引きマーカの選択操作に連動して作業クラッチを入
り操作させるよう構成することが考えられた。2. Description of the Related Art In the above rice transplanter, conventionally, a switching operation tool for selectively switching one of the left and right line drawing markers to an operating state by operating the forward and reverse operations from a neutral position is provided. It has been considered that the work clutch is engaged and operated in conjunction with the selection operation of either the right or left drawing marker of the operation tool.

【０００３】[0003]

【発明が解決しようとする課題】上記したような操作構
造は、この種の田植機では、圃場での植付け作業、特に
畦際での走行時において、苗植付装置の昇降作動、前記
線引きマーカの選択操作、作業クラッチの入り切り操作
等複数の同時操作を要することから、作業状態の変化に
より切り換える複数の対象装置〔作業クラッチと線引き
マーカ〕の操作具を兼用化させて、操作性を向上させる
ようにしたものであるが、以下のような欠点があった。
つまり、圃場において往復走行によって植付け作業を行
う場合には上記構成によると操作性が向上して便利であ
るが、当該圃場での往復走行作業を終了した後、枕地に
対する植付け作業を行う場合には、機体の左右両側には
畦や既植苗が存在しているから、線引きマーカを使用す
ることができない。このような場合には、前記兼用操作
具によって作業クラッチを入り操作させると、線引きマ
ーカが誤って作用姿勢に切り換わってしまうこととな
り、苗を損傷させたり、線引きマーカ自身を損傷させる
おそれがあった。本発明は上記不具合点を解消すること
を目的としている。In the rice transplanter of this type, the above-described operation structure has the above-mentioned operation of raising and lowering the seedling planting device and the above-mentioned line-drawing marker during planting work in a field, especially when traveling on a ridge. Since multiple simultaneous operations such as the selection operation of the work clutch and the operation of turning on and off the work clutch are required, the operability is improved by using the operation tools of a plurality of target devices (work clutch and drawing marker) that are switched depending on the change of the work state. However, it has the following drawbacks.
That is, when performing the planting work by reciprocating traveling in the field, the above configuration improves the operability and is convenient, but when performing the planting work on the headland after finishing the reciprocating traveling work in the field. Cannot use the line drawing marker because there are ridges and seedlings on both sides of the aircraft. In such a case, if the work clutch is operated by the dual-purpose operation tool, the wire drawing marker may be erroneously switched to the working posture, which may damage the seedling or the wire drawing marker itself. It was The present invention aims to eliminate the above-mentioned problems.

【０００４】[0004]

【課題を解決するための手段】本発明の特徴構成は、冒
頭に記載した田植機の操作構造において、走行機体の操
縦部に、中立位置から所定方向の正逆揺動操作によって
前記各線引きマーカのうちのいずれかを選択的に作用状
態に切り換えるとともに、前記所定方向と交差する方向
に揺動操作することによって、前記作業クラッチを入り
操作する操作具を備えてある点にある。In the operation structure of the rice transplanter described at the beginning, the characteristic construction of the present invention is that each of the above-mentioned wire drawing markers is operated by a forward / reverse swinging operation in a predetermined direction from a neutral position on a steering section of a traveling machine body. An operating tool for engaging and disengaging the working clutch is provided by selectively switching one of the two to an operating state and swinging the operating clutch in a direction intersecting with the predetermined direction.

【０００５】[0005]

【作用】前記操作具を中立位置から所定方向に正逆操作
することで左右いずれかの線引きマーカを作用状態に切
り換えるための選択が行え、前記所定方向と交差する方
向に揺動操作することで作業クラッチを入り操作するこ
とができるので、操作具を兼用化して、複数の操作具を
持ち替える等の煩わしさ無く操作性の向上を図ることが
できるものでありながら、操作方向を異ならせることに
よって、夫々単独で切り換え操作が可能になるとともに
操作誤りが少ないものになる。By operating the operation tool from the neutral position in the forward and reverse directions in a predetermined direction, selection can be made to switch one of the left and right drawing markers to the active state, and by swinging the operation marker in a direction intersecting the predetermined direction. Since the work clutch can be turned on and operated, it is possible to improve the operability without having to bother with a plurality of operating tools by using them as dual operating tools, but by changing the operating direction. The switching operation can be independently performed, and the operation error can be reduced.

【０００６】[0006]

【発明の効果】従って、操作具に兼用化によって、線引
きマーカの切り換え選択操作と作業クラッチの入り操作
を、ほぼ同時に操作することを可能にして操作性の向上
が図れるものでありながら、各別の単独操作が行え且つ
操作誤りも未然防止できて既植苗や線引きマーカ等の損
傷のおそれも少ないものに抑制できる田植機の操作構造
を提供できるに至った。As described above, the dual use of the operating tool enables the switching selection operation of the wire drawing marker and the engaging operation of the work clutch to be operated almost at the same time to improve the operability. It has become possible to provide an operation structure of a rice transplanter that can be operated independently, can prevent operation errors, and can reduce the risk of damage to existing seedlings and drawing markers.

【０００７】[0007]

【実施例】以下、実施例を図面に基いて説明する。図１
に示すように、乗用型走行機体の後部にリンク機構１を
介して昇降自在に苗植付装置２を連結して乗用型田植機
を構成してある。走行機体には前部に搭載されたエンジ
ン３の動力がベルト伝動装置４及びミッションケース５
を介して前後車輪６，７及び苗植付装置２に伝えられる
よう伝動系を構成し、苗植付装置２に対する動力はミッ
ションケース５内の作業クラッチ８により断続操作自在
に構成してある。Embodiments will be described below with reference to the drawings. Figure 1
As shown in FIG. 3, the riding type rice transplanter is configured by connecting the seedling planting device 2 to the rear part of the riding type traveling body via the link mechanism 1 so as to be able to move up and down. The power of the engine 3 mounted on the front part of the traveling body is the belt transmission 4 and the mission case 5.
The transmission system is configured to be transmitted to the front and rear wheels 6, 7 and the seedling planting device 2 via the, and power for the seedling planting device 2 is configured to be intermittently operated by the work clutch 8 in the mission case 5.

【０００８】苗植付装置２は、植付け用苗を載置して往
復横移動する苗のせ台９、苗のせ台９の下端部から一株
づつ苗を取り出して圃場に植付ける植付機構１０、泥面
上を滑走する接地フロート１１等を備えて構成され、左
右両側部には作業走行に伴って次回作業行程の際の走行
指標となる線溝を泥面上に描くための線引きマーカ１２
を出退自在に設けてある。前記植付機構１０は、植付伝
動ケース１３に対して横軸芯周りで回転駆動される回転
ケース１４の両側部に設定特性に基づいて相対回動する
植付爪支持ケース１５，１５を取付け、このケース１
５，１５に配備された夫々の植付爪１６，１６により苗
を植付けるよう構成してある。The seedling planting device 2 comprises a seedling stand 9 on which seedlings for planting are placed and reciprocating lateral movement, and a planting mechanism 10 for taking out one seedling from the lower end of the seedling stand 9 and planting it in the field. , A grounding float 11 or the like that slides on the mud surface, and a line drawing marker 12 for drawing a line groove on the left and right sides on the mud surface, which serves as a running index for the next work stroke as the work runs.
Is provided so that you can move in and out freely. The planting mechanism 10 has planting pawl support cases 15 and 15 that rotate relative to each other on the basis of set characteristics on both sides of a rotating case 14 that is rotationally driven around a horizontal axis with respect to the planting transmission case 13. , This case 1
The planting claws 16 and 16 provided in Nos. 5 and 15 are used to plant seedlings.

【０００９】前記作業クラッチ８は、電動モータ１７に
より入り切り操作するよう構成するとともに、当該クラ
ッチ８が切り操作される際において、前記各植付爪支持
ケース１５，１５がほぼ同じ対地高さになる所定回動位
相で停止される定位置停止型に構成し、非作業走行時に
植付爪が損傷するおそれを少なくするようにしてある。
つまり、図４に示すように、作業クラッチ８は、苗植付
装置２に対する伝動軸１８に入力ギア１９を遊端外嵌す
るとともに、シフト部材２０をスプライン外嵌し、入力
ギア１９とシフト部材２０との間に咬合離脱自在な咬合
部２１を形成してある。そして、シフト部材２０は咬合
方向にバネ付勢、即ちクラッチ入り付勢され、このシフ
ト部材２０を電動モータ１７によりギア減速機構２２及
び押引ロッド２３を介してシフトフォーク２４により切
り操作するよう構成してある。押引ロッド２３の連係途
中にはストローク吸収用バネ２５を介装してある。そし
て、前記シフトフォーク２４には、クラッチ切り操作時
において、伝動軸１８が所定の回転位相にあるときにの
みシフト部材２０を切り操作できるよう構成してある。
つまり、シフトフォーク２４に一体形成した接当部２４
ａが、図５に示すように、シフト部材２０における大径
鍔部２０ａに所定の回転位相で形成された係合凹部２６
内に入り込むことで、クラッチ切り操作を許容するよう
構成し、係合凹部２６における接当部２４ａに対する接
当規制部Ｑは厚肉に形成して、電動モータ１７によるク
ラッチ切り操作が低速であってもクラッチ切り操作が確
実に行えるようにしてある。The work clutch 8 is configured to be turned on and off by an electric motor 17, and when the clutch 8 is turned on and off, the planting pawl support cases 15 and 15 have substantially the same ground height. It is configured as a fixed position stop type that is stopped at a predetermined rotation phase to reduce the risk of damaging the planting pawl during non-work traveling.
That is, as shown in FIG. 4, in the work clutch 8, the input gear 19 is externally fitted to the transmission shaft 18 for the seedling planting device 2, and the shift member 20 is splined to fit the input gear 19 and the shift member. An occlusal part 21 is formed between the occlusal part 20 and the occlusal part 20. The shift member 20 is biased by a spring in the occlusal direction, that is, a clutch is biased, and the shift member 20 is operated by the electric motor 17 by the shift fork 24 via the gear reduction mechanism 22 and the push-pull rod 23. I am doing it. A stroke absorbing spring 25 is provided in the middle of the linkage of the push-pull rod 23. The shift fork 24 is configured so that the shift member 20 can be operated only when the transmission shaft 18 is in a predetermined rotational phase during the clutch disengagement operation.
That is, the abutment portion 24 formed integrally with the shift fork 24
As shown in FIG. 5, a is an engaging recess 26 formed in the large-diameter collar portion 20a of the shift member 20 at a predetermined rotation phase.
It is configured to allow the clutch disengagement operation by entering the inside, and the contact restricting portion Q with respect to the contact portion 24a in the engaging recess 26 is formed thick, so that the clutch disengagement operation by the electric motor 17 is slow. Even so, the clutch disengagement operation can be reliably performed.

【００１０】前記各線引きマーカ１２，１２は、図３に
示すように、機体横外方に突出する作用姿勢と内方側に
引退する格納姿勢とに亘り前後軸芯Ｘ１周りで回動自在
にフレーム２７に支持され、且つ、バネ２８により作用
姿勢に向けて突出回動付勢するよう構成するとともに、
苗植付装置２の上昇操作に伴って、苗植付装置２とリン
ク機構１との相対姿勢変化に基づいて、ワイヤ２９を介
して強制格納させるよう構成してある。又、苗植付装置
２を下降させても各線引きマーカ１２，１２を格納状態
でロック保持するロック機構３０，３０を各別に備え、
この各ロック機構３０，３０のロック解除を選択的に行
うことで、左右いずれかの線引きマーカ１２，１２を作
用姿勢に切り換えることができるよう構成してある。前
記選択操作を行う操作具３１は、機体操縦部４６におけ
る操縦ハンドル３２の下方側に配備してある。図２に示
すように、操作具３１は、ハンドルポスト３３に固定の
ブラケット３４に縦軸芯Ｙ周りで回動自在に支持された
回動支軸３５に対して異径嵌合によって一体回動自在並
びに上下方向に相対回動自在に握り部３６を連係させて
あり、回動支軸３５に一体形成したアーム３７が、横軸
芯Ｘ２周りで回動自在にブラケット３４に支持されたマ
ーカ操作具３８に接当係合により連動回動させるよう構
成してある。そして、中立位置から前記回動支軸３５の
軸芯周りでの正逆回動操作で、マーカ操作具３８に引き
操作によって操作ワイヤ３９，３９を介して連係される
左右ロック機構３０，３０が選択的に解除操作されるよ
う構成してある。As shown in FIG. 3, the drawing markers 12 and 12 are rotatable about the front-rear axis X1 in a working posture in which they project laterally outward and a storage posture in which they retract inward. It is supported by the frame 27 and is configured to be biased by a spring 28 so as to project and rotate toward the working posture.
With the raising operation of the seedling planting device 2, it is configured to be forcibly stored via the wire 29 based on the relative posture change between the seedling planting device 2 and the link mechanism 1. Further, even if the seedling planting device 2 is lowered, the lock mechanism 30, 30 for locking and holding the drawing markers 12, 12 in the retracted state is separately provided,
By selectively unlocking the lock mechanisms 30, 30, either of the left and right drawing markers 12, 12 can be switched to the working posture. The operation tool 31 for performing the selection operation is provided on the lower side of the control handle 32 in the body control section 46. As shown in FIG. 2, the operation tool 31 is integrally rotated by a different diameter fitting with respect to a rotation support shaft 35 which is rotatably supported around a vertical axis Y by a bracket 34 fixed to a handle post 33. A marker operation in which a grip portion 36 is linked freely and vertically relative to each other, and an arm 37 integrally formed with a rotation support shaft 35 is rotatably supported by a bracket 34 around a horizontal axis X2. The tool 38 is configured to be interlockingly rotated by abutting engagement. The right and left lock mechanisms 30, 30 linked with the marker operating tool 38 via the operation wires 39, 39 by the forward and reverse rotation operation around the axis of the rotation support shaft 35 from the neutral position. It is configured to be selectively released.

【００１１】そして、この操作具３１は、前記回動支軸
３５の軸芯周りでの正逆回動操作と交差する方向、即
ち、上下方向の回動操作によって作業クラッチ８の入り
切り操作を行えるよう構成してある。つまり、前記握り
部３６はコイルバネ４０により上方側の座金４１に対す
る受け止め姿勢に向けて上方付勢するとともに、回動支
軸３５に一体的に形成した支持部４２に電動モータ１７
の正逆転起動用リミットスイッチ４３を配備し、握り部
３６をコイルバネ４０の付勢力に抗して上方回動させる
と、連動片４４がリミットスイッチ４３に接当作用して
制御装置４５を介して電動モータ１７が駆動作動して作
業クラッチ８が入り操作され、再度、操作すると作業ク
ラッチ８が切り操作されるよう構成してある。The operation tool 31 can be turned on and off for the working clutch 8 by a turning operation in a direction intersecting the forward and backward turning operations around the axis of the turning support shaft 35, that is, a vertical turning operation. It is configured as follows. That is, the grip portion 36 is biased upward by the coil spring 40 toward the receiving posture with respect to the washer 41 on the upper side, and the electric motor 17 is attached to the support portion 42 formed integrally with the rotation support shaft 35.
When the limit switch 43 for forward / reverse rotation starting is provided and the grip portion 36 is rotated upward against the urging force of the coil spring 40, the interlocking piece 44 abuts against the limit switch 43 and the control device 45 is operated. The electric motor 17 is driven to operate and the work clutch 8 is turned on and off, and when the work clutch 8 is operated again, the work clutch 8 is disengaged.

【００１２】尚、特許請求の範囲の項に図面との対照を
容易にするために符号を記すが、該記入により本発明は
添付図面の構成に限定されるものではない。It should be noted that although reference numerals are given in the claims for facilitating the comparison with the drawings, the present invention is not limited to the configurations of the accompanying drawings by the entry.

【図面の簡単な説明】[Brief description of drawings]

【図１】田植機の全体側面図[Figure 1] Overall side view of rice transplanter

【図２】操作具配設部の切欠正面図FIG. 2 is a cutaway front view of an operation tool disposition portion.

【図３】線引きマーカの切り換え構造を示す図FIG. 3 is a diagram showing a drawing marker switching structure.

【図４】作業クラッチの切欠側面図FIG. 4 is a cutaway side view of the work clutch.

【図５】作業クラッチの切欠正面図FIG. 5 is a cutaway front view of the work clutch.

【符号の説明】[Explanation of symbols]

２ 苗植付装置 ８ 作業クラッチ １２，１２ 線引きマーカ ３１ 操作具 ４６ 操縦部 2 Seedling planting device 8 Work clutch 12, 12 Drawing marker 31 Operation tool 46 Control part

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 走行機体に対して昇降自在に苗植付装置
（２）を連結し、走行機体側から作業クラッチ（８）を
介して前記苗植付装置（２）に動力を伝達するよう構成
するとともに、前記苗植付装置（２）の左右両側に次回
作業行程における圃場面に走行指標を描く線引きマーカ
（１２），（１２）を外方突出する作用姿勢に設定可能
な作用状態と機体内方に引退する姿勢に保持する格納状
態とに切り換え自在に設けてある田植機の操作構造であ
って、走行機体の操縦部（４６）に、中立位置から所定
方向の正逆揺動操作によって前記各線引きマーカ（１
２），（１２）のうちのいずれかを選択的に作用状態に
切り換えるとともに、前記所定方向と交差する方向に揺
動操作することによって、前記作業クラッチ（８）を入
り操作する操作具（３１）を備えてある田植機の操作構
造。1. A seedling planting device (2) is movably connected to a traveling machine body, and power is transmitted from the traveling machine body side to the seedling planting device (2) through a work clutch (8). In addition to the above configuration, an operation state in which the line drawing markers (12) and (12) for drawing running indicators in the field scene in the next work process can be set to the outwardly projecting operation postures on the left and right sides of the seedling planting device (2). It is an operation structure of a rice transplanter that is switchably provided to a retracted state in which it is retained in a posture of retracting toward the inside of the machine body, and a forward and reverse swing operation from a neutral position to a predetermined direction is performed on a control section (46) of the traveling machine body. Each of the drawing markers (1
An operating tool (31) for engaging and disengaging the working clutch (8) by selectively switching one of 2) and (12) to an operating state and swinging the operating clutch (8) in a direction intersecting the predetermined direction. ) Is equipped with a rice transplanter operation structure.