JP2534143B2 - Planting rod stop device for transplanter - Google Patents
Planting rod stop device for transplanterInfo
- Publication number
- JP2534143B2 JP2534143B2 JP1308509A JP30850989A JP2534143B2 JP 2534143 B2 JP2534143 B2 JP 2534143B2 JP 1308509 A JP1308509 A JP 1308509A JP 30850989 A JP30850989 A JP 30850989A JP 2534143 B2 JP2534143 B2 JP 2534143B2
- Authority
- JP
- Japan
- Prior art keywords
- clutch
- planting
- stopper
- rod
- planting rod
- 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 - Fee Related
Links
Landscapes
- Transplanting Machines (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は田植機や作物移植機等の移植機における植付
杆停止装置に関するものである。TECHNICAL FIELD The present invention relates to a planting rod stopping device in a transplanter such as a rice transplanter and a crop transplanter.
従来の技術及び解決すべき課題 移植機、例えば田植機における従来の植付杆停止装置
は、一般に、軸(プランタアーム軸)上に設けた駆動側
爪クラッチと従動側爪クラッチの係脱により植付クラッ
チを入切すると共に、クラッチ切時に従動側爪クラッチ
に設けた回転阻止面を有する凹陥部をストッパに嵌入さ
せて植付杆の回動軌跡上における停止位置を規制するよ
うになっている。そして第7図に示すように植付杆回動
軌跡イ上における停止範囲は植付杆が苗植付を終了して
田面から上昇する後進行程の上部から下降する前進行程
の上部まで(Yの範囲)に設定されているものが多い。
しかし、植付杆が上昇する後進行程の上部側(終端寄り
側)は植付杆の回動軌跡中、一番抵抗が大となる個所で
あり、この個所で植付杆が停止した場合はクラッチに設
けた回転阻止面とストッパの接触部に残留トルクが発生
し両者が食込み状態となるので摺動抵抗が大となりクラ
ッチ作動不良(クラッチが入りにくい)となる虞があっ
た。2. Description of the Related Art A conventional planting rod stopping device in a transplanter, for example, a rice transplanter, is generally constructed by engaging and disengaging a drive side claw clutch and a driven side claw clutch provided on a shaft (planter arm shaft). When the clutch is engaged and disengaged, a recess having a rotation-preventing surface provided on the driven side pawl clutch is fitted into the stopper to regulate the stop position on the rotation locus of the planting rod. . Then, as shown in FIG. 7, the stop range on the planting rod rotation locus (i) is from the upper part of the rearward traveling stage where the planting rod finishes planting the seedlings and rises from the paddy field to the upper portion of the previous traveling sequence (Y Many are set to (range).
However, the upper part (closer to the end) of the backward movement where the planting rod rises is the place where the resistance is the largest in the turning trajectory of the planting rod, and when the planting rod stops at this place. Residual torque is generated in the contact portion between the rotation prevention surface provided on the clutch and the stopper, and both are in a bite state, so that sliding resistance becomes large and there is a risk of malfunction of the clutch (difficult to engage the clutch).
特に、移植機に施肥装置等の付属作業装置を付設した
ような場合には植付杆停止時に作業装置側から逆トルク
がかかるためその傾向が大となる問題があった。In particular, when an auxiliary working device such as a fertilizer applicator is attached to the transplanting machine, a reverse torque is applied from the working device side when the planting rod is stopped, which tends to be a problem.
課題を解決するための手段 本発明の移植機の植付杆停止装置は上記の課題を解決
するためなされたものであって、第1に軸15上に設けた
駆動側爪クラッチ17と従動側爪クラッチ18の係脱により
植付クラッチCを入切すると共に、クラッチ切時に従動
側爪クラッチ18に設けた回転阻止面A',B'を有する凹陥
部22をストッパ23に相対的に嵌入させて植付杆7の回動
軌跡L上における停止位置を規制するようにした植付ク
ラッチ装置において、植付クラッチ切作動が可能な植付
杆7の所定長さの停止範囲αを、上記回動軌跡L上にお
ける植付杆7の作動抵抗の大きい上昇行程側の後進側軌
跡と、植付杆7の作動抵抗の小さい下降行程側の前進側
軌跡との境界である頂点位置LTより前進側に設けるとと
もに、上記停止範囲α内に苗載台6の下端の植付苗掻取
部を介在せしめるように、ストッパ23に対する凹陥部22
嵌入時の植付杆7の回動タイミングを設定したことを特
徴としている。Means for Solving the Problems The planting rod stopping device for a transplanter according to the present invention has been made to solve the above-mentioned problems. First, a driving side claw clutch 17 and a driven side provided on a shaft 15 are provided. When the clutch C is engaged and disengaged, the planting clutch C is engaged and disengaged, and when the clutch is disengaged, the recessed portion 22 having the rotation preventing surfaces A ′ and B ′ provided on the driven side pawl clutch 18 is relatively engaged with the stopper 23. In the planting clutch device configured to regulate the stop position of the planting rod 7 on the rotation locus L, the planting rod 7 is capable of disengaging the planting rod 7 within a predetermined stop range α. Forward from the apex position L T, which is the boundary between the trailing-side trajectory on the ascending stroke side where the operating resistance of the planting rod 7 is large on the moving trajectory L and the forward-side trajectory on the descending stroke side where the operating resistance of the planting rod 7 is small And the planted seedling scraping section at the lower end of the seedling platform 6 within the stop range α. The recessed portion 22 with respect to the stopper 23 so that
It is characterized in that the turning timing of the planting rod 7 at the time of fitting is set.
第2に軸15上に設けた駆動側爪クラッチ17と従動側爪
クラッチ18の係脱により植付クラッチCを入切すると共
に、クラッチ切時に従動側爪クラッチ18に設けた回転阻
止面A',B'を有する凹陥部22をストッパ23に相対的に嵌
入させて植付杆7の回転軌跡L上における停止位置を規
制するようにした植付クラッチ装置において、上記従動
側爪クラッチ18を軸15方向にスライドさせて駆動側爪ク
ラッチ17と係脱せしめる機構とし、前記凹陥部22が従動
側爪クラッチ18の外周に設けた鍔部18'の外周側に形成
され、該凹陥部22両端の回転阻止面A',B'間を前記回転
軌跡L上の植付杆7の停止範囲αと対応させるととも
に、上記植付杆7の停止範囲αの後部側Bが植付杆の回
転軌跡L上における頂点位置LTよりも前進側に位置する
ようストッパ23に対する凹陥部22嵌入時の植付杆7の回
動タイミングを設定したことを特徴としている。Secondly, the planting clutch C is turned on and off by engaging and disengaging the driving side claw clutch 17 and the driven side claw clutch 18 provided on the shaft 15, and the rotation blocking surface A ′ provided on the driven side claw clutch 18 when the clutch is disengaged. In the planted clutch device in which the recessed portion 22 having B'and B'is relatively fitted into the stopper 23 to regulate the stop position on the rotation locus L of the planted rod 7, the driven side pawl clutch 18 is used as a shaft. The recessed portion 22 is formed on the outer peripheral side of the collar portion 18 ′ provided on the outer periphery of the driven side claw clutch 18 by sliding in the 15 direction to engage and disengage with the drive side claw clutch 17, and both ends of the recessed portion 22 are formed. The area between the rotation blocking surfaces A'and B'corresponds to the stopping range α of the planting rod 7 on the rotation locus L, and the rear side B of the stopping range α of the planting rod 7 is the rotation locus L of the planting rod. of the recessed portion 22 when fitted against the stopper 23 to be positioned forward side of the vertex position L T on It is characterized by setting the rotation timing of Tsuke杆 7.
第3に軸15上に設けた駆動側爪クラッチ17と従動側爪
クラッチ18の係脱により植付クラッチCを入切すると共
に、クラッチ切時に従動側爪クラッチ18に設けた回転阻
止面A',B'を有する凹陥部22をストッパ23に相対的に嵌
入させて植付杆7の回動軌跡L上における停止位置を規
制するようにした植付クラッチ装置において、従動側爪
クラッチ18に設けた凹陥部22の後側回転阻止面B'に対す
るストッパ23の当接面を傾斜面Sに構成したことを特徴
としている。Thirdly, the planting clutch C is turned on and off by engaging and disengaging the drive side claw clutch 17 and the driven side claw clutch 18 provided on the shaft 15, and the rotation blocking surface A ′ provided on the driven side claw clutch 18 when the clutch is disengaged. In the planted clutch device in which the recessed portion 22 having B'and B'is relatively fitted into the stopper 23 to regulate the stop position on the rotation locus L of the planting rod 7, the driven side pawl clutch 18 is provided. The contact surface of the stopper 23 with respect to the rear rotation blocking surface B ′ of the concave portion 22 is formed as an inclined surface S.
作用 第1に、植付クラッチを切ったとき、植付杆がその回
動軌跡上の抵抗が大きい後進側上部から軌跡頂点に至る
個所で停止せず常に前進方向に勢いが付く軌跡頂点から
前進側に入った所定範囲内で停止するので、クラッチ切
時におけるクラッチの回転阻止面とストッパの接触部に
残留トルクによる食込み状態が発生することがなく、ク
ラッチを再び入側に操作した時その作動が円滑・良好と
なる。第2に、クラッチ切時にストッパの傾斜面とクラ
ッチの回転阻止面が滑りながら接触することになるので
その瞬間の残留トルクが減少し、クラッチとストッパ間
の食込み現象がなくなり、クラッチ作動は常に円滑に行
なわれる。Action First, when the planting clutch is disengaged, the planting rod has a large resistance on its turning locus and does not stop at the part from the upper part of the reverse side to the locus apex, but always has momentum in the forward direction. When the clutch is disengaged, there is no biting due to residual torque in the contact area between the rotation prevention surface of the clutch and the stopper when the clutch is disengaged. Will be smooth and good. Secondly, when the clutch is disengaged, the inclined surface of the stopper and the rotation prevention surface of the clutch come into contact with each other while sliding, so the residual torque at that moment is reduced, the phenomenon of biting between the clutch and stopper is eliminated, and clutch operation is always smooth. To be done.
実施例 次に本発明の構成を図面に示された一実施例によって
説明する。図面には移植機としてチェンケース1及びサ
ブチェンケース2を介して左右一対の機体推進車輪3を
軸架し、下方に田面滑走用のフロート4,4aを装着した走
行機体5の後部に苗載台6、植付杆7等からなる植付部
Pを設けた歩行型田植機が例示されている(第8図参
照)。上記車輪3は第9図に示すようにリフトシリンダ
8に連結された天秤式リフタ9、リフトロッド10、リフ
トアーム11等からなる車輪上下機構及びローリング機構
を備えており耕盤の凹凸等に対応し得るようになってい
る。12はチェンケース2とリフトアーム11の回動支点部
で、該回動支点部12には、硬度の低い部材(例えば焼入
れ処理したリフトアーム11等に対して焼入れしない生
物)からなるカラー13を着脱自在に介装してあり、摩耗
時(回動支点部12は作業中常に泥水に晒され摩耗が早
い)には高価なチェンケース2やリフトアーム11を交換
することなく安価部品であるカラー13のみの交換で対処
できるようにしてある。Embodiment Next, the configuration of the present invention will be described with reference to an embodiment shown in the drawings. In the drawing, as a transplanter, a pair of left and right body propulsion wheels 3 are vertically mounted via a chain case 1 and a sub chain case 2, and seedlings are mounted on the rear part of a traveling body 5 equipped with floats 4 and 4a for sliding down a field. A walk-type rice transplanter provided with a planting section P including a platform 6, a planting rod 7 and the like is illustrated (see FIG. 8). As shown in FIG. 9, the wheel 3 is equipped with a balance type lifter 9 connected to a lift cylinder 8, a lift rod 10, a lift arm 11 and the like, and a wheel up / down mechanism and a rolling mechanism to cope with unevenness of a tiller. Is ready to go. Reference numeral 12 denotes a rotation fulcrum portion of the chain case 2 and the lift arm 11. The rotation fulcrum portion 12 is provided with a collar 13 made of a material having a low hardness (for example, a living thing that is hardened to the hardened lift arm 11 or the like). It is a detachable interposer and is a low-cost component without replacing the expensive chain case 2 or lift arm 11 when worn (the rotation fulcrum 12 is constantly exposed to muddy water during work and wears quickly). Only 13 can be replaced.
第5図は植付クラッチ機構の概略図で、ドライブケー
ス14内に回転自在に支持された軸(クランクアーム軸)
15上にはスプロケット16を固着した駆動側爪クラッチ17
を所定位置で遊嵌すると共に、従動側爪クラッチ18を軸
方向にのみ摺動自在に且つシフタ19の当接面の反対側に
設けた戻しスプリング20を介してクラッチ入側に付勢さ
れた状態で駆動側爪クラッチ17と対設してあり、植付ク
ラッチCの入切はシフタ19に連繋した操作レバー(植付
レバー)21で行なうようになっている。FIG. 5 is a schematic view of the planted clutch mechanism, which is a shaft (crank arm shaft) rotatably supported in the drive case 14.
Drive side claw clutch 17 with sprocket 16 fixed on 15
Is loosely fitted at a predetermined position, and the driven side claw clutch 18 is urged toward the clutch inward side through a return spring 20 slidably only in the axial direction and provided on the side opposite to the contact surface of the shifter 19. In this state, it is opposed to the drive side claw clutch 17, and the on / off of the planting clutch C is performed by an operation lever (planting lever) 21 linked to the shifter 19.
尚、前記スプロケット16は伝動チェン16a及び図示外
の中間軸を介し苗載台6の左右往復駆動機構の螺旋軸
(図示せず)に連動連結されており、植付クラッチCを
切ると、苗載台6の左右移動も停止するようになってい
る。The sprocket 16 is interlocked with the spiral shaft (not shown) of the left-right reciprocating drive mechanism of the seedling placing table 6 via a transmission chain 16a and an intermediate shaft (not shown). The horizontal movement of the mounting table 6 is also stopped.
一方、従動側爪クラッチ18の鍔部18'には第1図乃至
第3図に示すように前側回転阻止面A'と後側回転阻止面
B'を有する切欠状の凹陥部22を設けてあり、該凹陥部22
をストッパ23に相対的に嵌入させて植付杆7の回転軌跡
L上における停止位置を規制し得るように構成してあ
る。ストッパ23は図示例ではドライブケース14の壁から
軸1方向に向け突設した固定ストッパで、従動側爪クラ
ッチ18は鍔部18'の凹陥部22以外の部分では操作レバー2
1を切側に操作してもストッパ23が妨害してクラッチC
が作動できないように構成してある。On the other hand, as shown in FIGS. 1 to 3, the collar portion 18 'of the driven side pawl clutch 18 has a front rotation blocking surface A'and a rear rotation blocking surface A'.
A notch-shaped recess 22 having B'is provided.
Is relatively inserted into the stopper 23 so that the stop position on the rotation locus L of the planting rod 7 can be regulated. In the illustrated example, the stopper 23 is a fixed stopper projecting from the wall of the drive case 14 in the direction of the axis 1, and the driven side pawl clutch 18 has a portion of the collar portion 18 'other than the concave portion 22 in which the operating lever 2 is provided.
Even if 1 is operated to the off side, the stopper 23 interferes and the clutch C
Is configured so that it cannot operate.
上記の構成は従来のものと略同様であるが、本発明は
第1に、植付クラッチCの切時における植付杆7の停止
範囲αの後部側Bが植付杆7の回動軌跡L上における頂
点位置LTよりも前進側に位置するようストッパ23に対す
る凹陥部22嵌入時の植付杆7の回動タイミングを設定し
たものである。Although the above-mentioned configuration is substantially the same as the conventional one, the present invention is firstly such that the rear side B of the stopping range α of the planting rod 7 when the planting clutch C is disengaged is the locus of rotation of the planting rod 7. The rotation timing of the planting rod 7 when the recessed portion 22 is fitted into the stopper 23 is set so as to be located on the forward side of the apex position L T on L.
即ち、植付杆7の停止位置はストッパ23が嵌入する鍔
部18'の凹陥部22の範囲、換言すれば、ストッパ23が凹
陥部22の後側回転阻止面B'に当接する第2図図示の状態
における植付杆7の回動位置からストッパ23が前側回転
阻止面A'に当接する第1図図示の状態における植付杆7
の回動位置までとなるが、実施例では、ストッパ23が凹
陥部22の後側回転阻止面B'に当接した時の植付杆停止位
置(植付杆停止範囲αの後部側B)を、植付杆7が第4
図に示すように回動軌跡L上における頂点位置LTを基準
にして下降行程(前進行程)に入った直後の地点L1に、
また、ストッパ23が回転阻止面A'に当接した時の植付杆
停止位置(植付杆停止範囲αの前部側A)を、植付杆7
が前進行程略中途部の地点L9に夫々くるように植付杆7
の回動タイミングを設定したものである。That is, the stop position of the planting rod 7 is in the range of the recessed portion 22 of the collar portion 18 'into which the stopper 23 is fitted, in other words, the stopper 23 is in contact with the rear rotation blocking surface B'of the recessed portion 22 (FIG. 2). The stopper 23 contacts the front rotation-preventing surface A'from the pivoted position of the planting rod 7 in the illustrated state.
However, in the embodiment, the planted rod stop position (the rear side B of the planted rod stop range α) when the stopper 23 comes into contact with the rear rotation blocking surface B ′ of the recess 22 is shown. The planting rod 7 is the fourth
As shown in the figure, at the point L 1 immediately after entering the descending stroke (previous traveling stroke) with reference to the apex position L T on the turning locus L,
Further, the stop position of the planting rod (the front side A of the planting rod stop range α) when the stopper 23 comes into contact with the rotation preventing surface A ′ is set to the planting rod 7
So that they will come to the point L 9 in the middle of the front, respectively.
The rotation timing of is set.
尚、前部側Aの停止位置及び植付杆停止範囲αは、植
付杆7による苗掻取量を調節するために苗繰出し方向前
後方向に移動させるエプロン24の移動ストロークとの関
係、クラッチ切可能領域の広狭によるクラッチ作動の容
易性その他組立加工上の誤差等の諸般の要素を勘案して
適宜の位置及び範囲に選定される。The stop position on the front side A and the stop range α of the planting rod are related to the moving stroke of the apron 24 which is moved in the front and rear direction of the seedling in order to adjust the seedling scraping amount by the planting rod 7, the clutch. The appropriate position and range are selected in consideration of various factors such as the ease of clutch operation due to the narrowness of the disengageable region and other errors in assembly processing.
また、上記本実施例では従動側爪クラッチ18の鍔部1
8'の切欠状の凹陥部22を設け、該凹陥部22に固定ストッ
パを相対嵌入させて植付杆7を停止させる構造の植付杆
停止装置について説明したが本発明はかかる構造のもの
に限定されるものではなく、例えば従動爪クラッチにカ
ム面を形成し、該カム面に対し可動式ストッパを出没さ
せてクラッチを入切するようにした植付杆停止装置につ
いても採用し得る。Further, in the above-described embodiment, the collar portion 1 of the driven side pawl clutch 18 is
Although the notch-shaped recessed portion 22 of 8'is provided and the fixed stopper is relatively fitted into the recessed portion 22 to stop the planting rod 7, the planting rod stopping device has been described. The present invention is not limited to this, and for example, a planted rod stop device in which a cam surface is formed on a driven claw clutch and a movable stopper is projected and retracted with respect to the cam surface to open and close the clutch can also be adopted.
さて、第11図乃至第15図に示すものは、従動側爪クラ
ッチ18に設けた凹陥部22の後側回転阻止面B'に対するス
トッパ23の当接面を傾斜面に構成したものの一例を示す
ものである。即ち、このものは植付杆停止範囲αの前部
側Aにおいては第11図で示すように従動側爪クラッチ凹
陥部22の前側回転阻止面A'とストッパ23が面接触(平行
な面当り)するように構成し、植付杆停止範囲αの後部
側Bにおいては凹陥部22の後側回転阻止面B'とストッパ
23が第12図乃至第14図に示すように傾斜面Sで接触する
ように構成したものである。図示例のものはストッパ23
側の当接面を傾斜面Sとし、しかも、ストッパ23に対す
る嵌入始端側が低く嵌入終端側が高くなるように且つス
トッパ23の基部寄りから先端側にかけて順次低くなるよ
う傾斜の向きを横方向と縦方向の双方に有する傾斜面を
Sとし、ストッパ23と駆動側爪クラッチ18の後部側回転
阻止面B'が線接触するように構成したものである。Now, FIG. 11 to FIG. 15 show an example in which the contact surface of the stopper 23 with respect to the rear rotation blocking surface B ′ of the concave portion 22 provided in the driven side pawl clutch 18 is configured as an inclined surface. It is a thing. That is, as shown in FIG. 11, the front side rotation-preventing surface A ′ of the driven side claw clutch concave portion 22 and the stopper 23 are in surface contact (parallel surface contact) on the front side A of the planting rod stop range α. ), The rear rotation-preventing surface B ′ of the concave portion 22 and the stopper on the rear side B of the planting rod stop range α.
23 is configured so as to come into contact with the inclined surface S as shown in FIGS. 12 to 14. The example in the figure shows the stopper 23
Side contact surface is an inclined surface S, and the inclination directions are horizontal and vertical such that the insertion start end side with respect to the stopper 23 is low and the insertion end side is high, and gradually decreases from the base portion of the stopper 23 toward the tip end side. S is an inclined surface provided on both of the above, and the stopper 23 and the rear rotation preventing surface B ′ of the drive side pawl clutch 18 are in line contact with each other.
尚、傾斜面Sをストッパ23側ではなくクラッチ18の後
側回転阻止面B'に設けることも可能である。また、縦方
向の傾斜角度を変えストッパ23と後部側回転阻止面B'が
点接触するように構成してもよい(第15図参照)。The inclined surface S may be provided not on the stopper 23 side but on the rear rotation blocking surface B ′ of the clutch 18. Alternatively, the vertical inclination angle may be changed so that the stopper 23 and the rear side rotation blocking surface B ′ are in point contact with each other (see FIG. 15).
次に作用について説明する。先ず、植付作業中、枕地
における機体旋回時等には植付杆7の作動を停止せせる
べく植付クラッチCを切る。この際、第5図に示すよう
に植付レバー21を切側に操作するとシフタ19が弾機21a
に弾発されながら図において時計方向に回動するため従
動側爪クラッチ18が戻しスプリング20に抗し軸15上を左
側に押圧移動させられる。そして、ストッパ23が従動側
爪クラッチ18の鍔部18'に弾接すると該クラッチ18の横
移動が一時的に阻止されると共にクラッチ18はブレーキ
がかかりながら回転する。そして、凹陥部22がストッパ
23に対応する位置までクラッチ18が回転するとクラッチ
18はスプリング20に抗して左側に移動し凹陥部22がスト
ッパ23に嵌入した状態で植付クラッチCが完全に切れ、
植付杆7が停止する。Next, the operation will be described. First, during the planting work, the planting clutch C is disengaged in order to stop the operation of the planting rod 7 at the time of turning of the machine body on the headland. At this time, if the planting lever 21 is operated to the cut side as shown in FIG.
Since the driven side claw clutch 18 is rotated clockwise in the figure while being elastically urged by, the driven side claw clutch 18 is pressed against the return spring 20 and moved leftward on the shaft 15. When the stopper 23 elastically contacts the collar portion 18 'of the driven side pawl clutch 18, lateral movement of the clutch 18 is temporarily blocked and the clutch 18 rotates while the brake is applied. Then, the recess 22 is a stopper.
When the clutch 18 rotates to the position corresponding to 23, the clutch
18 moves to the left against the spring 20, and the recess 22 is fitted into the stopper 23, and the planting clutch C is completely disengaged.
The planting rod 7 stops.
ところで、実作業中、植付クラッチCを使用する場合
は主として枕地部分での機体旋回時であり、枕地旋回は
減速して行なうので、実作業状態では、ストッパ23が凹
陥部22の後側回転阻止面B'に当接した状態(第1図図示
の状態)で植付杆7が停止することは殆どなく、第3図
に示すようにクラッチ18の鍔部背面側18'aがストッパ23
の前面側23aに接触しZ部においてブレーキがかかりな
がらストッパ23が凹陥部22の後側回転阻止面B'に当接し
た状態(第2図図示の状態)で停止するのが殆どであ
る。この時、クラッチ18の後側回転阻止面B'とストッパ
23の接触面にクラッチ18の回転方向とは逆方向の力が加
わるため該部に残留トルクが発生し、両者が食込み状態
となり易いことは前述の通りであるが、ストッパ23が凹
陥部22の後側回転阻止面B'に当接した時、植付杆7がそ
の回動軌跡L上における頂点位置LTよりも前進側の次位
の地点L1に位置するように設定してあるため、実作業時
における植付クラッチCの切時においては、植付杆7は
軌跡L上の抵抗が大きい後進側(上昇行程)で停止する
ことなく、植付杆7の自重により前進方向に勢いがつく
個所で停止することになるのでクラッチ18とストッパ23
の接触面に前記のような残留トルクによる食込み現象が
発生することはない。そのため植付クラッチCを再び入
れる際、摺動抵抗によるクラッチ作動不良(クラッチが
入りにくい現象)が解消され、クラッチ作動は常に円滑
に行なわれる。By the way, during the actual work, when the planting clutch C is used, it is mainly during the turning of the aircraft in the headland part, and the headland turning is performed at a reduced speed. Therefore, in the actual work state, the stopper 23 is located after the recess 22. The planting rod 7 rarely stops in the state of being in contact with the side rotation preventing surface B '(the state shown in FIG. 1), and the rear side 18'a of the flange 18 of the clutch 18 is prevented as shown in FIG. Stopper 23
In most cases, the stopper 23 comes into contact with the front surface side 23a and the brake is applied at the Z portion, and the stopper 23 comes into contact with the rear rotation blocking surface B'of the recess 22 (the state shown in FIG. 2). At this time, the rear rotation blocking surface B'of the clutch 18 and the stopper
As described above, a residual torque is generated on the contact surface of the clutch 23 in the direction opposite to the rotation direction of the clutch 18 and a residual torque is generated in the contact portion, and both are likely to be in a bite state. Since the planting rod 7 is positioned at the next point L 1 on the forward side of the apex position L T on the rotation locus L when it abuts on the rear rotation blocking surface B ′. When the planting clutch C is disengaged during actual work, the planting rod 7 does not stop on the reverse side (upstroke) where the resistance on the locus L is large, and the planting rod 7 is urged in the forward direction by its own weight. The clutch 18 and the stopper 23
The biting phenomenon due to the residual torque as described above does not occur on the contact surface of the. Therefore, when the planted clutch C is re-engaged, the malfunction of the clutch due to the sliding resistance (a phenomenon that the clutch is difficult to engage) is eliminated, and the clutch operation is always performed smoothly.
また、従動側爪クラッチ18に設けた凹陥部22の後側回
転阻止面B'に対するストッパ23の当接面を傾斜面Sに構
成したものにおいては、植付クラッチCの切時に、スト
ッパ23が鍔部18'に弾接してブレーキがかかりながら凹
陥部22を見付けてクラッチCが完全に切れる状態となる
ことは前記の場合と同様であるが、このときストッパ傾
斜面Sとクラッチ18とが滑りながら線接触状態(第12
図)又は点接触状態(第15図)で接するのでその瞬間の
残留トルクが減少する(摩擦抵抗が小となる)。Further, in the case where the contact surface of the stopper 23 with respect to the rear rotation blocking surface B ′ of the concave portion 22 provided in the driven side pawl clutch 18 is configured to be the inclined surface S, when the planting clutch C is disengaged, the stopper 23 is It is similar to the above-mentioned case that the clutch C is completely disengaged by elastically contacting the collar portion 18 'while the brake is being applied to find the concave portion 22, but at this time, the stopper inclined surface S and the clutch 18 slip. While in line contact (No. 12
(Fig.) Or point contact (Fig. 15), the residual torque at that moment decreases (friction resistance decreases).
そのため従動側爪クラッチ18とストッパ23間の食込み
がなくなり、植付クラッチの作動は前記同様スムーズに
行なわれる。Therefore, there is no bite between the driven side pawl clutch 18 and the stopper 23, and the operation of the planting clutch is smoothly performed as described above.
発明の効果 本発明の第1、第2は上記のように構成したので、夫
々次の効果を奏する。EFFECTS OF THE INVENTION Since the first and second aspects of the present invention are configured as described above, the following effects are achieved respectively.
(1)植付杆が軌跡上の抵抗が大きい軌跡頂点から後進
側で停止させることなく、植付杆の自重によって常に前
進方向の勢いがつく範囲内で停止させることができる。
その結果植付クラッチ切時におけるクラッチの回転阻止
面とストッパ間における圧接方向の強い押圧力が作用せ
ず、両者の接触圧(摩擦)による食い込み状態をなくす
ことができる。この事によりクラッチ再入時における作
動抵抗も小さくクラッチ作動が円滑・良好となるうえ、
クラッチ戻しスプリングのバネ圧を極力弱く設定できる
のでレバー等の操作荷重も軽減され、高齢者等の使用も
可能となる。(1) The planting rod can be stopped within a range in which the weight of the planting rod always exerts momentum in the forward direction without being stopped on the backward side from the locus apex where the resistance on the locus is large.
As a result, when the planted clutch is disengaged, a strong pressing force in the pressure contact direction does not act between the rotation preventing surface of the clutch and the stopper, and the biting state due to the contact pressure (friction) between the two can be eliminated. As a result, the operation resistance at the time of re-engagement of the clutch is small and the clutch operation is smooth and good,
Since the spring pressure of the clutch return spring can be set to be as weak as possible, the operation load of the lever and the like can be reduced, and it can be used by the elderly and the like.
(2)植付杆の苗掻取部である苗載台の下端が、植付杆
回動下降軌跡中のクラッチ切範囲(植付杆停止範囲α)
内にあるので、苗掻取部における石詰まり等のトラブル
が生じた場合でも、石の除去等の回復作業に際して、そ
のままの状態で植付クラッチを切操作して植付クラッチ
切状態で作業ができる利点がある。(2) The lower end of the seedling mount, which is the seedling scraping part of the planting rod, is in the clutch disengagement range (planting rod stop range α) in the locus of descending rotation of the planting rod.
Even if troubles such as stone blockage in the seedling scraping part occur, the planting clutch can be disengaged in that state during recovery work such as stone removal, and work can be done with the planting clutch disengaged. There are advantages.
(3)植付クラッチ切時に傾斜面によりスプリングとク
ラッチの回転阻止面が滑りながら接することになるので
接触面の残留トルクが減少し、クラッチとストッパ間の
食い込み減少をなくすことができ、クラッチ作動を常に
円滑に行うことができると共に、クラッチ戻しスプリン
グのバネ圧を極力弱く設定できるのでレバー等の操作荷
重を軽減させることができる。(3) When the planted clutch is disengaged, the inclined surface causes the spring and the clutch rotation-preventing surface to come into contact with each other while sliding, so that the residual torque on the contact surface is reduced, and the reduction in bite between the clutch and the stopper can be eliminated. Can be always performed smoothly, and the spring pressure of the clutch return spring can be set as weak as possible, so that the operation load of the lever or the like can be reduced.
第1図乃至第3図は要部の作用説明図で、第1図はスト
ッパが従動側爪クラッチに設けた凹陥部の前側回転阻止
面に当接した状態の正面図、第2図はストッパが凹陥部
の後側回転阻止面に当接した状態の正面図、第3図は凹
陥部がストッパに嵌入する前後の状態を示す平面図、第
4図は植付杆の回転軌跡上の停止範囲αを示す植付杆軌
跡図、第5図は植付クラッチ機構の断面図、第6図は植
付部の側面図、第7図は従来の植付杆停止範囲Yを示す
植付杆軌跡図、第8図は田植機の全体側面図、第9図は
車輪上下機構及びローリング機構を示す平面図、第10図
はチェンケースとリフトアームの回動支点部の断面図、
第11図乃至第15図は凹陥部の後側回転阻止面に対するス
トッパの当接面を傾斜面に構成した例を示し、第11図は
ストッパが凹陥部の前側回転阻止面に当接した状態の正
面図、第12図はストッパが凹陥部の後側回転阻止面に当
接した状態の正面図、第13図は凹陥部がストッパに嵌入
する前後の状態を示す平面図、第14図はストッパの斜視
図、第15図はストッパと後側回転阻止面が点接触するよ
うな傾斜面を構成した例のストッパ正面図である。 7……植付杆、15……軸、17……駆動側爪クラッチ、18
……従動側爪クラッチ、18……鍔部、22……凹陥部、23
……ストッパ、A'……凹陥部の前側回転阻止面、B'……
凹陥部の後側回転阻止面、C……植付クラッチ、S……
傾斜面。FIGS. 1 to 3 are explanatory views of the operation of the main part. FIG. 1 is a front view of a state in which the stopper is in contact with a front side rotation preventing surface of a concave portion provided in the driven side pawl clutch, and FIG. 2 is a stopper. Fig. 3 is a front view showing the state in which the recess contacts the rear rotation prevention surface of the recess, Fig. 3 is a plan view showing the condition before and after the recess is fitted into the stopper, and Fig. 4 is a stop on the rotation locus of the planting rod. FIG. 5 is a sectional view of the planting clutch mechanism, FIG. 6 is a side view of the planting part, and FIG. 7 is a planting rod showing a conventional planting rod stop range Y. A locus diagram, FIG. 8 is an overall side view of the rice transplanter, FIG. 9 is a plan view showing a wheel up-and-down mechanism and a rolling mechanism, and FIG. 10 is a cross-sectional view of a rotation fulcrum part of a chain case and a lift arm.
11 to 15 show an example in which the contact surface of the stopper with respect to the rear rotation-preventing surface of the recess is formed as an inclined surface, and FIG. 11 shows the state where the stopper is in contact with the front-side rotation-preventing surface of the recess. FIG. 12 is a front view of the stopper in contact with the rear rotation preventing surface of the recess, FIG. 13 is a plan view showing the condition before and after the recess is fitted into the stopper, and FIG. FIG. 15 is a perspective view of the stopper, and FIG. 15 is a front view of the stopper of an example in which an inclined surface is configured such that the stopper and the rear-side rotation preventing surface make point contact. 7 ... Planting rod, 15 ... Shaft, 17 ... Drive side claw clutch, 18
...... Drive side claw clutch, 18 …… Collar part, 22 …… Recessed part, 23
...... Stopper, A '... Front rotation-prevention surface of recess, B' ...
Rear rotation blocking surface of the recess, C ... Planting clutch, S ...
Inclined surface.
Claims (3)
7)と従動側爪クラッチ(18)の係脱により植付クラッ
チ(C)を入切すると共に、クラッチ切時に従動側爪ク
ラッチ(18)に設けた回転阻止面(A'),(B')を有す
る凹陥部(22)をストッパ(23)に相対的に嵌入させて
植付杆(7)の回動軌跡(L)上における停止位置を規
制するようにした植付クラッチ装置において、植付クラ
ッチの切作動が可能な植付杆(7)の所定長さの停止範
囲(α)を、上記回動軌跡(L)上における植付杆
(7)の作動抵抗の大きい上昇行程側の後進側軌跡と、
植付杆(7)の作動抵抗の小さい下降行程側の前進側軌
跡との境界である頂点位置(LT)より前進側に設けると
ともに、上記停止範囲(α)内に苗載台(6)下端の植
付苗掻取部を介在せしめるように、ストッパ(23)に対
する凹陥部(22)嵌入時の植付杆(7)の回動タイミン
グを設定したことを特徴とする移植機の植付杆停止装
置。1. A drive side pawl clutch (1) provided on a shaft (15).
7) and the driven side claw clutch (18) are engaged and disengaged to engage and disengage the planting clutch (C), and the rotation blocking surfaces (A '), (B') provided on the driven side claw clutch (18) when the clutch is disengaged. In the planted clutch device, a recessed portion (22) having a) is relatively inserted into the stopper (23) to restrict the stop position on the rotation locus (L) of the planting rod (7). The stop range (α) of a predetermined length of the planting rod (7) capable of disengaging the attached clutch is set on the ascending stroke side where the operating resistance of the planting rod (7) on the rotation locus (L) is large. The trailing side trajectory,
The planting rod (7) is provided on the forward side from the apex position (L T ) which is the boundary with the forward side trajectory on the descending stroke side where the operating resistance is small, and the seedling mounting table (6) is located within the stop range (α). The planting of a transplanter characterized in that the turning timing of the planting rod (7) when the recess (22) is fitted into the stopper (23) is set so that the planted seedling scraping portion at the lower end is interposed. Rod stop device.
7)と従動側爪クラッチ(18)の係脱により植付クラッ
チ(C)を入切すると共に、クラッチ切時に従動側爪ク
ラッチ(18)に設けた回転阻止面(A'),(B')を有す
る凹陥部(22)をストッパ(23)に相対的に嵌入させて
植付杆(7)の回動軌跡(L)上における停止位置を規
制するようにした植付クラッチ装置において、上記従動
側爪クラッチ(18)を軸(15)方向にスライドさせて駆
動側爪クラッチ(17)と係脱せしめる機構とし、前記凹
陥部(22)が従動側爪クラッチ(18)の外周に設けた鍔
部(18')の外周側に形成され、該凹陥部(22)両端の
回転阻止面(A'),(B')間を前記回転軌跡(L)上の
植付杆(7)の停止範囲(α)と対応させるとともに、
上記植付杆(7)の停止範囲(α)の後部側(B)が植
え付け杆の回転軌跡(L)上における頂点位置(LT)よ
りも前進側に位置するようストッパ(23)に対する凹陥
部(22)嵌入時の植付杆(7)の回動タイミングを設定
したことを特徴とする移植機の植付杆停止装置。2. A drive side pawl clutch (1) provided on a shaft (15).
7) and the driven side claw clutch (18) are engaged and disengaged to engage and disengage the planting clutch (C), and the rotation blocking surfaces (A '), (B') provided on the driven side claw clutch (18) when the clutch is disengaged. In the planted clutch device, the recessed portion (22) having the above (4) is relatively fitted into the stopper (23) so as to regulate the stop position on the rotation locus (L) of the planted rod (7). The driven side claw clutch (18) is slid in the direction of the shaft (15) to engage and disengage with the drive side claw clutch (17), and the recess (22) is provided on the outer periphery of the driven side claw clutch (18). It is formed on the outer peripheral side of the collar portion (18 '), and between the rotation blocking surfaces (A'), (B ') at both ends of the recessed portion (22), the planting rod (7) on the rotation locus (L). Corresponding to the stop range (α),
The recessed portion with respect to the stopper (23) so that the rear side (B) of the stop range (α) of the planting rod (7) is located on the forward side of the apex position (L T ) on the rotation locus (L) of the planting rod. A planting rod stopping device for a transplanting machine, characterized in that a turning timing of the planting rod (7) when the portion (22) is fitted is set.
7)と従動側クラッチ爪(18)の係脱により植付クラッ
チ(C)を入切すると共に、クラッチ切時に従動側爪ク
ラッチ(18)に設けた回転阻止面(A'),(B')を有す
る凹陥部(22)をストッパ(23)に相対的に嵌入させて
植付杆(7)の回動軌跡(L)上における停止位置を規
制するようにした植付クラッチ装置において、従動側爪
クラッチ(18)に設けた凹陥部(22)の後側回転阻止面
(B')に対するストッパ(23)の当接面を傾斜面(S)
に構成したことを特徴とする移植機の植付杆停止装置。3. A drive side pawl clutch (1) provided on a shaft (15).
7) and the driven side clutch pawl (18) are engaged and disengaged to engage and disengage the planting clutch (C), and the rotation blocking surfaces (A '), (B') provided on the driven side pawl clutch (18) when the clutch is disengaged. In the planted clutch device, a recessed portion (22) having a (4) is relatively fitted into the stopper (23) to restrict the stop position on the rotation locus (L) of the planted rod (7). The contact surface of the stopper (23) with respect to the rear rotation prevention surface (B ′) of the concave portion (22) provided in the side claw clutch (18) is an inclined surface (S).
A planting rod stopping device for a transplanter, which is characterized in that
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1308509A JP2534143B2 (en) | 1989-11-28 | 1989-11-28 | Planting rod stop device for transplanter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1308509A JP2534143B2 (en) | 1989-11-28 | 1989-11-28 | Planting rod stop device for transplanter |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03168014A JPH03168014A (en) | 1991-07-19 |
JP2534143B2 true JP2534143B2 (en) | 1996-09-11 |
Family
ID=17981882
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1308509A Expired - Fee Related JP2534143B2 (en) | 1989-11-28 | 1989-11-28 | Planting rod stop device for transplanter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2534143B2 (en) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1377674A (en) * | 1972-07-11 | 1974-12-18 | Prodotti Antibiotici Spa | Tetracycline complex |
-
1989
- 1989-11-28 JP JP1308509A patent/JP2534143B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH03168014A (en) | 1991-07-19 |
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