JP3697786B2 - Seedling transplanter - Google Patents

Seedling transplanter Download PDF

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Publication number
JP3697786B2
JP3697786B2 JP21123896A JP21123896A JP3697786B2 JP 3697786 B2 JP3697786 B2 JP 3697786B2 JP 21123896 A JP21123896 A JP 21123896A JP 21123896 A JP21123896 A JP 21123896A JP 3697786 B2 JP3697786 B2 JP 3697786B2
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Japan
Prior art keywords
tilling
seedling
planting
shaft
tillage
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JP21123896A
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JPH1052106A (en
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弘和 仲
一郎 渡部
学 名本
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Iseki and Co Ltd
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Iseki and Co Ltd
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Description

【0001】
【発明の属する技術分野】
この発明は、圃場を耕起しながら苗を植え付ける苗移植機に関するものである。
【0002】
【従来の技術】
従来、水稲苗の移植に係る作業を省力化するために、コンバイン等で稲を収穫作業した後の圃場を耕起しながら苗を植え付ける構成の苗移植機がある。
【0003】
【発明が解決しようとする課題】
ところが、上記苗移植機は、コンバイン等で収穫した後の藁屑や藁の切株、雑草等が残存した圃場で苗を植え付けることになり、藁等を前側から後側へ左右方向の軸を中心に回転移動することにより耕起する耕起爪で耕起すると、その耕起した位置の土壌内に藁等が混在し、その部分に苗を植え付けると、苗が確実に植え付けられず、浮苗になったり植付姿勢が悪くなったりする。
【0004】
【課題を解決するための手段】
この発明は上記の点を解消しようとするもので、本発明における構成は次のようにする。
すなわち、苗植付装置4の苗植付位置を苗の植え付けの前に耕起する耕起装置3を設けてなる苗移植機であって、前記耕起装置3は耕起爪67を備え、該耕起爪67は苗移植機の進行方向において前側から後側へ左右方向の耕起軸66を中心に回転移動して圃場を耕起するように構成し、前記耕起軸66は耕起伝動ケース65を介して駆動する構成とし、前記耕起伝動ケース65の両側部には前記耕起軸66回りに回転自在の藁巻付防止回転板71を設け、該藁巻付防止回転板71は外周に複数の突起71aを備えると共に外周部が耕起伝動ケース65の下側に位置するよう変位した構成とした苗移植機の構成とする。
【0005】
【作用】
本発明の苗移植機は、耕起装置の耕起軸が耕起伝動ケースを介して駆動し、耕起爪が前側から後側へ耕起軸を中心に回転移動することにより耕起した位置に、苗植付装置により苗を植え付ける。耕起伝動ケースの両側部には前記耕起軸回りに回転自在の藁巻付防止回転板を設け、該藁巻付防止回転板は外周に複数の突起を備えると共に外周部が耕起伝動ケースの下側に位置するよう変位した構成としたので、耕起伝動ケースの前方に溜ってくる藁を土壌内に押し込んだり後方に排出させたりする
【0006】
【発明の効果】
よって、本発明の苗移植機は、藁巻付防止回転板により、耕起伝動ケースの前方に溜ってくる藁を土壌内に押し込んだり後方に排出させたりし、耕起伝動ケースの前方に藁が溜ったり該ケースの両側部に藁が巻きついたりするのを防止できる
【0007】
【実施例】
この発明の苗移植機の一種である不耕起田植機について図面に基づき説明する。
図1は、乗用型の不耕起田植機1を示すものであり、この田植機1は、主として走行車体2と部分耕起装置3と6条植えの苗植付装置4とから構成される。この不耕起田植機1は、油圧昇降シリンダ5により走行車体2の後部に設けられた昇降リンク機構6を介して苗植付装置4を昇降自在に装着し、該苗植付装置4の前側にフレ−ム7を介して部分耕起装置3を取り付けた構成となっている。
【0008】
走行車体2は、走行推進体として左右に一対のクロ−ラ−8L,8Rを備え、これらのクロ−ラ−8L,8Rを駆動して走行する。このクロ−ラ−8L,8Rは、走行車体2に搭載されたエンジン9の動力が前後進無段変速操作可能な左右別々の油圧式無段変速装置10L,10Rを介して左右それぞれの駆動輪11,11に伝動され、その駆動輪11,11と後側の従動輪12,12と転動輪13,…とに巻かれているクロ−ラ−8L,8Rが駆動回転するようになっている。通常、クロ−ラ−8L,8Rの左右幅は、25〜45cmである。また、走行車体2の後部には、前記エンジン9からの動力をギアボックス(図示していない)を介して伝達し回転動力として出力する動力取出軸(PTO軸)14が設けられている。この動力取出軸14の回転数は、前記エンジン9の回転数に比例する。
【0009】
前記油圧式無段変速装置10L,10Rは、前記エンジン9の動力により該油圧式無段変速装置10L,10Rの入力軸を駆動し、出力モ−タ10La,10Raにより出力して前記駆動輪11,11を駆動する構成となっている。
また、走行車体2は、キャビン15で覆った操縦座席16を設け、その前側に左右のクロ−ラ−8L,8Rの駆動の無段変速操作が可能な左右の走行レバ−17L,17Rを設けている。すなわち、この左右の走行レバー17L,17Rにより前記油圧式無段変速装置10L,10Rを操作するようになっている。該走行レバ−17L,17Rと油圧式無段変速装置10L,10Rの変速操作ア−ム10Lb,10Rbを左右それぞれプッシュプルワイヤ18,18により連結し、走行レバ−17L,17Rによりそれぞれの油圧式無段変速装置10L,10Rの変速比を調整できる構成となっている。この走行レバ−17L,17Rの操作により、走行車体2の前後進と停止と左右の操向操作とが行えるようになっている。
【0010】
従って、通常作業時等の直進時は、左右の走行レバ−17L,17Rのそれぞれの把持部をオペレ−タが片手で同時に把持して左右のクロ−ラ−8L,8Rの駆動を同速度になるように操作する。前記走行レバ−17L,17Rの左方にはスロットルレバ−19を設け、このスロットルレバ−19によりエンジン9の回転数を調節するようになっている。
【0011】
前記走行レバ−17L,17Rの右方にはPTO変速レバ−20を設け、このPTO変速レバ−20により前記動力取出軸14へ動力を伝達する前記ギアボックスの動力伝達比を高速、低速、停止の3段階に切替操作可能になっている。操縦座席16の右側には植付・昇降レバ−21を設け、この植付・昇降レバ−21の操作により、前記昇降リンク機構6を前記油圧昇降シリンダ5により昇降作動させて部分耕起装置3と苗植付装置4を昇降させると共に、苗植付装置4の駆動の入切ができる構成となっている。
【0012】
また、機体のキャビン15の左右側及び後側には作業ステップ22が設けられている。左右の作業ステップ22L,22Rは車体前端まで延設されているので、車体への乗降は車体の左右側からだけではなく、機体前側からも乗降できる。車体前部の左右側には苗植付装置4に苗を補給するための予備苗載置台23が設けられている。この予備苗載置台23から苗植付装置4の苗載置台51への苗補給は、後側の作業ステップ22Bに作業者が足を載せて行え、後側の作業ステップ22Bに覆われたクロ−ラ−等の走行車体の伝動部に巻き込まれることがなく安全に行える。尚、これらの作業ステップ22の上面は、作業者が足をすべらすことがないように、凹凸が施されている。
【0013】
また、走行車体2の後部の動力取出軸14からベルト24a,24b、プ−リ25,26,27を介して回転動力を2軸に分岐伝達し、前記2軸の一方を株間調節ケ−ス28、伝動の入切が行える植付クラッチケ−ス29、植付伝動軸30を介して苗植付装置4へ動力を伝達するよう構成し、他方を耕起伝動軸31を介して部分耕起装置3へ動力を伝達するよう構成している。
【0014】
すなわち、図5、図6に示すように、前記動力取出軸14の2連プ−リ25からそれぞれ苗植付装置駆動用伝動ベルト23、部分耕起装置駆動用伝動ベルト24を介して株間調節ケ−ス入力プ−リ26及び耕起伝動軸31と一体回転する耕起伝動軸駆動プ−リ27を駆動する。該耕起伝動軸駆動プ−リ27は、2連プ−リであり、他方から油圧ポンプ駆動用伝動ベルト32を介して油圧ポンプ33を駆動する。尚、この油圧ポンプ33は、前記油圧昇降シリンダ5の油圧源となっている。
【0015】
一方、前記株間調節ケ−ス入力プ−リ26の駆動で前記株間調節ケ−ス28に動力が伝達される。該株間調節ケ−ス28は、苗植付装置駆動用の油圧式無段変速装置であり、走行車体2の右側のクロ−ラ−駆動用の油圧式無段変速装置10Rの変速比に連動して比例するように変速比が設定されるようになっており、前記PTO変速レバ−20を高速位置あるいは低速位置に固定した状態で、機体の走行速度に対して苗植付装置4の駆動速度が常に比例する様に構成している。その具体構成は、図4に示すように、右側のクロ−ラ−駆動用の油圧式無段変速装置10Rの変速操作ア−ム10Rbと株間調節ケ−ス28の変速操作ア−ム28aとをプッシュプルワイヤ34で連結し、右側のクロ−ラ−駆動用の油圧式無段変速装置10Rの操作に連動して株間調節ケ−ス28の変速操作ア−ム28aが操作される構成となっている。尚、この実施例は、右側のクロ−ラ−駆動用の油圧式無段変速装置10Rの操作に連動して苗植付装置駆動用の油圧式無段変速装置を操作する構成としたが、左側のクロ−ラ−駆動用の油圧式無段変速装置10Lの操作に連動して苗植付装置駆動用の油圧式無段変速装置を操作する構成としてもよいものである。
【0016】
そして、株間調節ケ−ス28から植付クラッチケ−ス29へカップリング28cにより動力が伝達される。植付クラッチケ−ス29は植付クラッチピン29aを該ケ−ス内に対して出入させることにより伝動の入切を可能にしたものであり、前記植付クラッチピン29aは前記植付・昇降レバ−21に連結される植付クラッチワイヤ29b、植付クラッチ操作ア−ム29cを介して操作されるものである。植付クラッチケ−ス29の出力軸29dは、ユニバ−サルジョイントを有する植付伝動軸30に接続されている。
【0017】
従って、前記走行レバ−17L,17Rの操作による機体の走行速度の変動に関係なく苗植付装置4が所定の植付間隔で苗を植え付けるようになっている。また、株間調節ケ−ス28の変速操作ア−ム28aのプッシュプルワイヤ34の取付孔28b,…は、複数設けられており、該プッシュプルワイヤ34の前記変速操作ア−ム28aの取り付け位置を変更することによって苗の植付株間を調節できるようになっている。
【0018】
ところで、前記株間調節ケ−ス28、植付クラッチケ−ス29及び耕起伝動軸31の入力側の軸受部31aは、走行車体後部の作業機取付部35に上下の取付ピン36,36により取り付けられたフレ−ム枠37に固着されている。このフレ−ム枠37は、後方に延びる前後左右4本のフレ−ムの端部を別の4本のフレ−ムで背面視四角形状に連結した構成となっている。すなわち、該フレ−ム枠37は、前後に延びるそれぞれ2本づつの上フレ−ム38,38及び下フレ−ム39,39と、該上フレ−ム38,38もしくは該下フレ−ム39,39にそれぞれに溶接された横フレ−ム40,41と、該横フレ−ム40,41に溶接された2本の縦フレ−ム42,42と、これらのフレ−ムに固着されたプレ−ト43,44とを備えて構成される。よって、前記作業機取付部35に上下の取付ピン36,36によりフレ−ム枠37を取り付けることで苗植付装置4及び部分耕起装置3への動力伝達部を着脱することができ、他の作業装置等への付け替えが容易になり、走行車体2の汎用性が向上する。尚、苗植付装置4及び部分耕起装置3を昇降させる昇降リンク機構6が前記縦フレ−ム42,42に取り付けられており、前記株間調節ケ−ス28、植付クラッチケ−ス29を前記油圧昇降シリンダ5による昇降部分から外し、株間調節ケ−ス28、植付クラッチケ−ス29が前記油圧昇降シリンダ5により昇降されないようにして前記油圧昇降シリンダ5の負荷を軽減させている。
【0019】
苗植付装置4は、主として苗載置台51と植付伝動部52及び各条の苗植付機構53,…とから構成され、走行車体側からの動力により前記植付伝動軸30を介して植付伝動部52に入力され作動するようになっている。各条の苗植付機構53,…は、前記植付伝動部52からの動力により作動し、苗載置台51の苗を一株づつ圃場へ植え付けていく構成となっている。尚、左右方向の各条の苗植付機構53,…の間隔すなわち植付条の条間は、30cmになっている。
【0020】
また、苗植付装置4の下部には、中央部にセンタ−フロ−ト54及び両側部にサイドフロ−ト55,55を設けており、これらのフロ−ト54,55,55が圃場面を滑走する構成である。前記センタ−フロ−ト54は、左右方向の枢支軸回りに回動するように設けられ、該フロ−ト54の上側には該フロ−ト54の前後傾斜角度を検出するフロ−ト迎い角センサ54aが設けられている。従って、通常植付作業時は前記植付・昇降レバ−21を植付「入」及び「下降」に操作することになるが、前記センタ−フロ−ト54の前後傾斜角をセンタ−フロ−トセンサ−54aにより検出して、該前後傾斜角を所定値にすべく油圧昇降シリンダ5を作動させて、苗植付部4が圃場面に対して一定の高さを保つように制御するようになっている。
【0021】
前記苗載置台51は、前記苗植付機構53,…の作動に伴って、植付伝動部52からの動力により左右往復移動するように設けられ、苗載置台上のマット状の苗を苗植付機構53,…が苗掻き取り口56,…から一株づつ掻き取る構成となっている。尚、該苗載置台51は、左右移動端において植付伝動部52からの伝動により作動する苗送りベルト57,…によりマット苗を苗載置台51に沿って苗植付機構側に順次移送する公知の構成である。
【0022】
ところで、前記走行車体2の左右のクロ−ラ−8L,8Rの後方には整地板58,58が設けられている。この整地板58,58は、前記クロ−ラ−8L,8Rの走行跡を馴らし、機体の自重により沈下して踏み固められたクロ−ラ−跡を整地する構成となっている。これにより、クロ−ラ−跡の圃場面の段差を小さくすると共に表土の凹凸を馴らすことにより圃場面を軟らかくしてクロ−ラ−跡に苗が適正に植え付けられるようにしている。
【0023】
部分耕起装置3は、支持プレ−ト61,61,62,62、支持パイプ63等により支持されて苗植付装置4と一体的に設けられており、耕起条が前記苗植付装置4の苗植付機構53,…の各植付条の前方に耕起部64,…が各条毎(6条分)設けられ、苗植付装置4の苗の植付位置となる前方の土壌を耕起する構成となっている。この部分耕起装置3は、走行車体側からの動力により前記耕起伝動軸31、耕起伝動ケ−ス65を介して左右方向に設けられた耕起軸66を駆動する構成となっている。前記耕起部64は、前記耕起軸66に固着された耕起爪67を備えて構成される。図1に示すように、耕起軸66は機体の左側面視で反時計回りに回転駆動し、該耕起軸66に固着された耕起爪67が機体の進行方向において前側から後側へ耕起軸66を中心に回転移動する構成となっている。
【0024】
各条の耕起部64の上側には、該耕起爪67を覆うように耕起部カバ−68が各耕起条毎に設けられている。該耕起部カバ−68は、耕起爪67が掻き上げる耕起した土壌を上方あるいは側方に散乱させず、耕起した土壌が耕起条に落下して覆いかぶさるように作用する。また、前記耕起部カバ−68は、前記センタ−フロ−ト上に土壌が覆いかぶさることを防ぎ、フロ−トセンサ−54aの誤検知等を防止している。
【0025】
各条の耕起部64,…の前方には、藁排除具69,…が設けられている。この藁排除具69は、櫛状のものであり、機体が走行することにより耕起部64が耕起される耕起位置にある藁を耕起位置から排除していく構成となっている。よって、耕起位置にある藁を部分耕起装置3の耕起爪67により土壌内へ押し込んで混入させることを防ぎ、これにより苗植付装置4により苗が確実に植え付けられずに浮苗になったり植付姿勢が悪くなったりすることを防止している。尚、この藁排除具69は、各条の前記耕起部カバ−68,…に固着された藁排除具支持パイプ69aに支持された構成となっている。
【0026】
また、各条の耕起部64,…の間には、回転自在である筒状の遊転輪70,…を設けており、圃場面に接地して回転する構成である。この遊転輪70は、各条の耕起部寄りである左右端部の外径に対して中央部の外径を小さくした形状となっており、耕起作業時は、該遊転輪70の左右端部を圃場面に接地させ耕起爪67の耕起が所定深さを超えないようにすると共に、該遊転輪70の中央部と圃場面との間に空間部を設けることで部分耕起装置3の前方にある藁屑等をスム−ズに後方に排出し、耕起爪67や耕起軸66等に藁屑が巻き付くのを防止できる。尚、前記耕起伝動ケ−ス65が存在する耕起部64,64の間には、前記遊転輪70の径大の左右端部と等径の耕起伝動ケ−ス両側用遊転輪70a,70aが設けられている。
【0027】
前記耕起伝動ケ−ス65の両側部には、藁巻付防止回転板71,71が設けられている。この藁巻付防止回転板71,71は、外周に複数の突起71a,…が設けられると共に前記耕起軸66回りに回転自在に設けられており、該耕起伝動ケ−ス65の前方に溜ってくる藁を土壌内に押し込んだり後方に排出させて該耕起伝動ケ−ス65の前方に藁が溜ったり該ケ−ス65の両側部に藁が巻きついたりするのを防止している。
【0028】
尚、前記藁巻付防止回転板71,71は、図8に示すように、耕起伝動ケ−ス65の下側に作用するように、該回転板71,71の回動軸を左右方向に傾斜させるようにしたり、また、図9に示すように、外周部が耕起伝動ケ−ス65の下側に位置するよう変位させたものにしてもよい。
以上の構成により、部分耕起装置3の前方に藁排除具69,…を設けることで、部分耕起装置3の各条耕起部64,…が耕起した土壌に藁が混在しにくく、その耕起した位置の土壌内に苗を植え付けるにあたって、植付苗が浮苗になったり植付姿勢が悪くなったりすることがなく苗が適正な姿勢で圃場に植え付けられる。
【0029】
尚、以上の実施例は6条植えの苗移植機に関するものであるが、本発明は6条植えに限定するものではない。
【図面の簡単な説明】
【図1】不耕起田植機の側面図。
【図2】不耕起田植機の平面図。
【図3】耕起装置とその周辺の構成を示した要部簡略平面図。
【図4】株間調節ケ−スの操作構成を判り易くした平面図。
【図5】動力取出軸の周辺の構成を示した側面図。
【図6】動力取出軸の周辺の構成を示した背面図。
【図7】藁巻付防止回転板を示す背面図。
【図8】他の藁巻付防止回転板を示す背面図。
【図9】他の藁巻付防止回転板を示す背面図。
【符号の説明】
1…不耕起田植機(苗移植機)、3…部分耕起装置、4…苗植付装置、65…耕起伝動ケース、66…耕起軸、67…耕起爪、69…藁排除具、71…藁巻付防止回転板、71a…突起、
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seedling transplanter for planting seedlings while plowing a field.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there is a seedling transplanting machine configured to plant seedlings while cultivating a field after harvesting rice with a combine or the like in order to save work related to transplanting paddy rice seedlings.
[0003]
[Problems to be solved by the invention]
However, the seedling transplanting machine will plant seedlings in a field where harvested straw, straw stumps, weeds, etc. remain after harvesting with a combine, etc., and center the left and right axis from the front side to the rear side. When plowing with the tilling claw that plows by rotating and moving, there is a mixture of straw etc. in the soil at the plowed position, and if seedlings are planted in that part, the seedlings are not planted reliably, and floating seedlings Or the planting posture becomes worse.
[0004]
[Means for Solving the Problems]
The present invention is intended to solve the above-described points, and the configuration of the present invention is as follows.
That is, it is a seedling transplanting machine provided with the tilling device 3 that plows the seedling planting position of the seedling planting device 4 before planting the seedling, and the tilling device 3 includes a tilling claw 67, The tilling claw 67 is configured to rotate around the tilling shaft 66 in the lateral direction from the front side to the rear side in the advancing direction of the seedling transplanting machine to plow the field, and the tilling shaft 66 is tilled. It is configured to be driven through a transmission case 65, and on both sides of the tillage transmission case 65, a ridge winding prevention rotating plate 71 that is rotatable around the tilling shaft 66 is provided. Has a plurality of protrusions 71a on the outer periphery and a configuration of the seedling transplanter configured such that the outer peripheral portion is displaced so as to be positioned below the tillage transmission case 65 .
[0005]
[Action]
In the seedling transplanter of the present invention, the tilling shaft of the tilling device is driven through the tilling transmission case, and the tilling claw is plowed by rotating around the tilling shaft from the front side to the rear side. Then, seedlings are planted by a seedling planting device. Provided on both sides of the tillage transmission case is a kite-winding prevention rotating plate that is rotatable around the tilling shaft. The kite-winding prevention rotating plate has a plurality of protrusions on the outer periphery and the outer peripheral portion is the tilling transmission case. Since the structure is displaced so as to be positioned on the lower side, the cocoon collected in front of the tillage transmission case is pushed into the soil or discharged backward .
[0006]
【The invention's effect】
Therefore, the seedling transplanting machine of the present invention pushes the cocoon collected in front of the tillage transmission case into the soil or discharges it behind the tillage transmission case by the heel winding prevention rotating plate, It is possible to prevent scumming and wrinkles around both sides of the case .
[0007]
【Example】
A no-tillage rice transplanter which is a kind of seedling transplanter of the present invention will be described with reference to the drawings.
FIG. 1 shows a riding type no-tillage rice transplanter 1, which is mainly composed of a traveling vehicle body 2, a partial tiller 3 and a six-row planting device 4. . This no-tillage planter 1 is mounted with a seedling planting device 4 so as to be lifted and lowered by a hydraulic lifting cylinder 5 via a lifting link mechanism 6 provided at the rear of the traveling vehicle body 2. It is the structure which attached the partial tillage apparatus 3 via the frame 7.
[0008]
The traveling vehicle body 2 includes a pair of crawlers 8L and 8R on the left and right as a traveling propulsion body, and travels by driving these crawlers 8L and 8R. These crawlers 8L and 8R are provided on the left and right drive wheels via separate left and right hydraulic continuously variable transmissions 10L and 10R in which the power of the engine 9 mounted on the traveling vehicle body 2 can be operated forward and backward continuously variable. 11 and 11, and the rollers 8 </ b> L and 8 </ b> R wound around the driving wheels 11 and 11, the rear driven wheels 12 and 12, and the rolling wheels 13 and so on are driven to rotate. . Usually, the left and right widths of the crawlers 8L and 8R are 25 to 45 cm. Further, a power take-off shaft (PTO shaft) 14 that transmits power from the engine 9 via a gear box (not shown) and outputs it as rotational power is provided at the rear portion of the traveling vehicle body 2. The rotational speed of the power take-out shaft 14 is proportional to the rotational speed of the engine 9.
[0009]
The hydraulic continuously variable transmissions 10L and 10R drive the input shafts of the hydraulic continuously variable transmissions 10L and 10R by the power of the engine 9, and output them by the output motors 10La and 10Ra to output the drive wheels 11 , 11 are driven.
Further, the traveling vehicle body 2 is provided with a control seat 16 covered with a cabin 15 and provided with left and right traveling levers 17L and 17R capable of continuously variable speed operation for driving left and right crawlers 8L and 8R on the front side thereof. ing. That is, the hydraulic continuously variable transmissions 10L and 10R are operated by the left and right traveling levers 17L and 17R. The travel levers 17L and 17R and the gearless operation gears 10Lb and 10Rb of the hydraulic continuously variable transmissions 10L and 10R are connected by left and right push-pull wires 18 and 18, respectively, and the hydraulic levers 17L and 17R respectively. It is the structure which can adjust the gear ratio of continuously variable transmission 10L, 10R. By operating the travel levers 17L and 17R, the traveling vehicle body 2 can be moved forward and backward, stopped, and steered left and right.
[0010]
Accordingly, when the vehicle travels straight, such as during normal work, the operator grips the gripping portions of the left and right traveling levers 17L and 17R simultaneously with one hand, and drives the left and right crawlers 8L and 8R at the same speed. Operate to A throttle lever 19 is provided on the left side of the travel levers 17L and 17R, and the rotational speed of the engine 9 is adjusted by the throttle lever 19.
[0011]
A PTO shift lever 20 is provided on the right side of the travel levers 17L and 17R, and the power transmission ratio of the gear box that transmits power to the power take-out shaft 14 by the PTO shift lever 20 is high, low, and stopped. The switching operation can be performed in three stages. A planting / elevating lever 21 is provided on the right side of the control seat 16, and by operating the planting / elevating lever 21, the elevating link mechanism 6 is moved up and down by the hydraulic elevating cylinder 5, and the partial tiller 3. The seedling planting device 4 is moved up and down, and the seedling planting device 4 can be turned on and off.
[0012]
Further, work steps 22 are provided on the left and right sides and the rear side of the cabin 15 of the fuselage. Since the left and right work steps 22L and 22R are extended to the front end of the vehicle body, boarding / alighting on the vehicle body can be performed not only from the left and right sides of the vehicle body but also from the front side of the body. On the left and right sides of the front part of the vehicle body, a preliminary seedling placement table 23 for supplying seedlings to the seedling planting device 4 is provided. The seedling replenishment from the preliminary seedling placement stand 23 to the seedling placement stand 51 of the seedling placement device 4 can be performed by the operator placing his / her feet on the rear work step 22B, and the black covered by the rear work step 22B. -It can be performed safely without being caught in the transmission part of the traveling vehicle body such as a roller. The upper surface of these work steps 22 is uneven so that the operator does not slip his / her foot.
[0013]
Further, rotational power is branched and transmitted from the power take-off shaft 14 at the rear of the traveling vehicle body 2 to the two axes via belts 24a and 24b and pulleys 25, 26 and 27, and one of the two axes is controlled between stocks. 28, a planting clutch case 29 that can be turned on and off, a power transmission to the seedling planting device 4 through a planting transmission shaft 30, and the other part of the other through a plowing transmission shaft 31 The power is transmitted to the device 3.
[0014]
That is, as shown in FIG. 5 and FIG. 6, the inter-strain adjustment is performed from the double pulley 25 of the power take-out shaft 14 through the seedling planting device driving transmission belt 23 and the partial tillage device driving transmission belt 24, respectively. The tillage transmission shaft drive pulley 27 that rotates integrally with the case input pulley 26 and the tillage transmission shaft 31 is driven. The tillage transmission shaft drive pulley 27 is a double pulley, and the hydraulic pump 33 is driven from the other side via the hydraulic pump drive transmission belt 32. The hydraulic pump 33 is a hydraulic pressure source for the hydraulic lifting cylinder 5.
[0015]
On the other hand, power is transmitted to the inter-strain adjustment case 28 by driving the inter-strain control case input pulley 26. The inter-strain adjustment case 28 is a hydraulic continuously variable transmission for driving the seedling planting device, and is linked to the gear ratio of the hydraulic continuously variable transmission 10R for driving the right side of the traveling vehicle body 2. The gear ratio is set so as to be proportional to each other, and the seedling planting device 4 is driven with respect to the traveling speed of the machine body with the PTO shift lever 20 fixed at the high speed position or the low speed position. The speed is always proportional. As shown in FIG. 4, the specific configuration is such that the right-side crawler-drive hydraulic continuously variable transmission 10R is equipped with a gear-shifting arm 10Rb and a gear-shifting arm 28a of the inter-stock adjustment case 28. Are connected by a push-pull wire 34, and the shift operation arm 28a of the stock adjustment case 28 is operated in conjunction with the operation of the hydraulic continuously variable transmission 10R for driving the right crawler. It has become. In this embodiment, the hydraulic continuously variable transmission for driving the seedling planting device is operated in conjunction with the operation of the hydraulic continuously variable transmission 10R for driving the right crawler. The hydraulic continuously variable transmission for driving the seedling planting device may be operated in conjunction with the operation of the hydraulic continuously variable transmission 10L for driving the left crawler.
[0016]
Then, power is transmitted from the inter-strain adjustment case 28 to the planting clutch case 29 by the coupling 28c. The planting clutch case 29 can be turned on and off by moving a planting clutch pin 29a in and out of the case, and the planting clutch pin 29a is provided with the planting / elevating lever. It is operated via a planting clutch wire 29b coupled to -21 and a planting clutch operating arm 29c. An output shaft 29d of the planting clutch case 29 is connected to a planting transmission shaft 30 having a universal joint.
[0017]
Therefore, the seedling planting device 4 is designed to plant seedlings at a predetermined planting interval regardless of fluctuations in the traveling speed of the aircraft due to the operation of the traveling levers 17L and 17R. Further, a plurality of mounting holes 28b of the push-pull wire 34 of the speed change operation arm 28a of the inter-stock adjustment case 28 are provided, and the mounting position of the speed change operation arm 28a of the push-pull wire 34 is provided. Can be adjusted between seedling planting stocks.
[0018]
By the way, the inter-strain adjustment case 28, the planting clutch case 29, and the input side bearing portion 31a of the tilling transmission shaft 31 are attached to the work machine attachment portion 35 at the rear of the traveling vehicle body by the upper and lower attachment pins 36, 36. The frame frame 37 is fixed. The frame frame 37 has a configuration in which end portions of four frames, front, rear, left, and right extending rearward are connected to each other in a quadrangular shape when viewed from the back by another four frames. That is, the frame frame 37 includes two upper frames 38, 38 and lower frames 39, 39 each extending in the front-rear direction, and the upper frame 38, 38 or the lower frame 39. , 39 respectively welded to the horizontal frames 40, 41, two vertical frames 42, 42 welded to the horizontal frames 40, 41, and fixed to these frames Plates 43 and 44 are provided. Therefore, the power transmission part to the seedling planting device 4 and the partial tillage device 3 can be attached and detached by attaching the frame frame 37 to the work implement attaching part 35 by the upper and lower attachment pins 36, 36. Therefore, it is easy to replace the work body and the like, and the versatility of the traveling vehicle body 2 is improved. In addition, the raising / lowering link mechanism 6 which raises / lowers the seedling planting apparatus 4 and the partial tillage apparatus 3 is attached to the said vertical frames 42 and 42, The said inter-strain adjustment case 28 and the planting clutch case 29 are attached. The load between the hydraulic lifting cylinder 5 is reduced by removing the lifting / lowering portion from the hydraulic lifting cylinder 5 so that the inter-stock adjustment case 28 and the planting clutch case 29 are not lifted and lowered by the hydraulic lifting cylinder 5.
[0019]
The seedling planting device 4 is mainly composed of a seedling placing table 51, a planting transmission unit 52, and seedling planting mechanisms 53 for each strip, and the like through the planting transmission shaft 30 by power from the traveling vehicle body side. It is input to the planting transmission unit 52 and operates. Each seedling planting mechanism 53,... Is operated by the power from the planting transmission unit 52, and is configured to plant the seedlings on the seedling placement table 51 one by one on the field. In addition, the space | interval of the seedling planting mechanism 53 of each row | line | column of the left-right direction, ie, the space | interval of the planting strip, is 30 cm.
[0020]
Further, at the lower part of the seedling planting device 4, a center float 54 is provided at the center and side floats 55, 55 are provided at both sides. These floats 54, 55, 55 It is a structure that glides. The center float 54 is provided so as to rotate about a pivot shaft in the left-right direction. A float reception for detecting a front and rear inclination angle of the float 54 is provided on the upper side of the float 54. An angle sensor 54a is provided. Therefore, during the normal planting operation, the planting / elevating lever 21 is operated to “enter” and “descent”, but the longitudinal inclination angle of the center float 54 is set to the center flow. In order to control the seedling planting unit 4 so as to maintain a certain height with respect to the field scene by operating the hydraulic elevating cylinder 5 so that the forward / backward inclination angle is set to a predetermined value. It has become.
[0021]
The seedling mounting table 51 is provided so as to reciprocate left and right by the power from the planting transmission unit 52 in accordance with the operation of the seedling planting mechanism 53,... The planting mechanism 53,... Is scraped from the seedling scraping port 56,. The seedling mounting table 51 sequentially transfers the mat seedlings along the seedling mounting table 51 to the seedling planting mechanism side by a seedling feeding belt 57 that is operated by transmission from the planting transmission unit 52 at the left and right moving ends. This is a known configuration.
[0022]
Incidentally, leveling plates 58 and 58 are provided behind the left and right crawlers 8L and 8R of the traveling vehicle body 2, respectively. The ground leveling plates 58, 58 are adapted to level the track of the crawler that has been sunk by the dead weight of the fuselage by acclimatizing the track of the crawlers 8L, 8R. As a result, the level difference of the farm scene of the crawler trace is reduced and the unevenness of the topsoil is adjusted to soften the farm scene so that the seedling can be properly planted on the crawler trace.
[0023]
The partial tillage device 3 is supported by support plates 61, 61, 62, 62, a support pipe 63, and the like, and is provided integrally with the seedling planting device 4. In the front of each planting strip of the 4 seedling planting mechanisms 53,..., A plowing section 64 is provided for each strip (for 6 strips), and the planting position of the seedling planting device 4 is the front. It is configured to cultivate the soil. The partial tilling device 3 is configured to drive a tilling shaft 66 provided in the left-right direction via the tilling transmission shaft 31 and the tilling transmission case 65 by power from the traveling vehicle body side. . The tilling part 64 includes a tilling claw 67 fixed to the tilling shaft 66. As shown in FIG. 1, the tilling shaft 66 is driven to rotate counterclockwise as viewed from the left side of the body, and the tilling claw 67 fixed to the tilling shaft 66 moves from the front side to the rear side in the traveling direction of the body. It is configured to rotate around the tilling shaft 66.
[0024]
On the upper side of the plowing portion 64 of each strip, a plowing portion cover 68 is provided for each plowing strip so as to cover the tilling claw 67. The cultivating section cover 68 does not scatter the cultivated soil picked up by the cultivating claw 67 upward or to the side, and acts so that the cultivated soil falls onto the cultivated strip and covers it. Further, the plowing portion cover 68 prevents the soil from covering the center float and prevents erroneous detection of the float sensor 54a.
[0025]
In front of the plowing portions 64,. The heddle removing tool 69 is comb-shaped, and has a configuration in which the hull at the plowing position where the plowing portion 64 is plowed is removed from the plowing position as the machine travels. Therefore, it is prevented that the plow in the plowing position is pushed into the soil by the plowing claw 67 of the partial plowing device 3 and mixed into the soil, thereby preventing the seedling planting device 4 from planting the seedlings to floating seedlings. This prevents the planting posture from becoming worse. In addition, this wrinkle removal tool 69 is configured to be supported by a wrinkle removal tool support pipe 69a fixed to the plowing portion cover 68 of each strip.
[0026]
Moreover, between the plowing parts 64 of each row | line | column, the cylindrical idler wheel 70 which can rotate freely is provided, and it is the structure which earth | grounds and rotates on the field scene. The idler wheel 70 has a shape in which the outer diameter of the central portion is made smaller than the outer diameter of the left and right end portions that are closer to the plowing portion of each strip. The right and left ends of the plow 67 are brought into contact with the field scene so that the tilling of the tilling claw 67 does not exceed a predetermined depth, and a space is provided between the central part of the freewheel 70 and the field scene. The swarf etc. in front of the partial tillage device 3 can be discharged smoothly and rearward, and the swarf can be prevented from being wound around the tilling claw 67, the tilling shaft 66, or the like. In addition, between the tilling portions 64 and 64 where the tilling transmission case 65 exists, both sides of the tilling transmission case having the same diameter as the left and right end portions of the idler wheel 70 have the same diameter. Rings 70a and 70a are provided.
[0027]
On both sides of the plowing transmission case 65, ridge winding preventing rotating plates 71, 71 are provided. The wing winding preventing rotating plates 71, 71 are provided with a plurality of projections 71 a,... On the outer periphery thereof, and are rotatably provided around the tilling shaft 66, in front of the tilling transmission case 65. By pushing the accumulated cocoon into the soil and discharging it backward, it is possible to prevent the cocoon from collecting in front of the tillage transmission case 65 and wrapping around the both sides of the case 65. Yes.
[0028]
As shown in FIG. 8, the rotation shafts of the rotary plates 71 and 71 are arranged in the horizontal direction so that the rotary plates 71 and 71 act on the lower side of the tillage transmission case 65 as shown in FIG. The outer peripheral portion may be displaced so as to be positioned below the tillage transmission case 65 as shown in FIG.
With the above configuration, by providing the hoe removing tool 69, ... in front of the partial tillage device 3, it is difficult for the straw to be mixed in the soil cultivated by each row tilling portion 64, ... of the partial tillage device 3, When seedlings are planted in the soil at the cultivated position, the seedlings are planted in the field in an appropriate posture without the seedlings becoming floating seedlings or the planting postures becoming worse.
[0029]
In addition, although the above Example is related with the seedling transplanter of 6 row planting, this invention is not limited to 6 row planting.
[Brief description of the drawings]
FIG. 1 is a side view of a no-tillage rice transplanter.
FIG. 2 is a plan view of a non-tillage rice transplanter.
FIG. 3 is a simplified plan view showing a main part of a tilling device and its peripheral configuration.
FIG. 4 is a plan view that makes it easy to understand the operation configuration of the inter-strain adjustment case.
FIG. 5 is a side view showing a configuration around a power take-off shaft.
FIG. 6 is a rear view showing a configuration around a power take-out shaft.
FIG. 7 is a rear view showing a wrap-around preventing rotating plate.
FIG. 8 is a rear view showing another kite winding preventing rotating plate.
FIG. 9 is a rear view showing another kite winding preventing rotating plate.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Non-tillage rice transplanter (seedling transplanter), 3 ... Partial tillage device, 4 ... Seedling planting device, 65 ... Tillage transmission case, 66 ... Tillage shaft, 67 ... Tillage claw, 69 ... Relief Tools , 71 ... anti-rotation plate with wrapping winding, 71a ... projection,

Claims (1)

苗植付装置(4)の苗植付位置を苗の植え付けの前に耕起する耕起装置(3)を設けてなる苗移植機であって、前記耕起装置(3)は耕起爪(67)を備え、該耕起爪(67)は苗移植機の進行方向において前側から後側へ左右方向の耕起軸(66)を中心に回転移動して圃場を耕起するように構成し、前記耕起軸(66)は耕起伝動ケース(65)を介して駆動する構成とし、前記耕起伝動ケース(65)の両側部には前記耕起軸(66)回りに回転自在の藁巻付防止回転板(71)を設け、該藁巻付防止回転板(71)は外周に複数の突起(71a)を備えると共に外周部が耕起伝動ケース(65)の下側に位置するよう変位した構成とした苗移植機。A seedling transplanter provided with a tilling device (3) for tilling the seedling planting position of the seedling planting device (4) before planting the seedling, wherein the tilling device (3) is a tilling claw (67) , and the tilling claw (67) is configured to plow the field by rotating around the tilling axis (66) in the horizontal direction from the front side to the rear side in the traveling direction of the seedling transplanter. The tilling shaft (66) is configured to be driven through a tilling transmission case (65), and can be rotated around the tilling shaft (66) on both sides of the tilling transmission case (65). A kite-winding prevention rotating plate (71) is provided, and the kite-winding prevention rotating plate (71) includes a plurality of protrusions (71a) on the outer periphery, and the outer periphery is located below the tillage transmission case (65). A seedling transplanter with a displaced configuration .
JP21123896A 1996-08-09 1996-08-09 Seedling transplanter Expired - Fee Related JP3697786B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016021457A1 (en) * 2014-08-08 2016-02-11 ヤンマー株式会社 Rice planting machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016021457A1 (en) * 2014-08-08 2016-02-11 ヤンマー株式会社 Rice planting machine
JP2016036310A (en) * 2014-08-08 2016-03-22 ヤンマー株式会社 Rice transplanter

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