JP4203205B2

JP4203205B2 - Vegetable transplanter

Info

Publication number: JP4203205B2
Application number: JP2000073744A
Authority: JP
Inventors: 智洋竹山; 俊郎和田; 洋三大垣
Original assignee: Yanmar Agricultural Equipment Co Ltd; Kanzaki Kokyukoki Manufacturing Co Ltd
Current assignee: Yanmar Agricultural Equipment Co Ltd; Kanzaki Kokyukoki Manufacturing Co Ltd
Priority date: 2000-03-16
Filing date: 2000-03-16
Publication date: 2008-12-24
Anticipated expiration: 2020-03-16
Also published as: JP2001258331A

Description

【０００１】
【発明の属する技術分野】
本発明は、苗トレイから１株分の玉ネギ、葉ネギ、白ネギなどの野菜苗を取出して圃場に植付けるようにした野菜移植機に関する。
【０００２】
【発明が解決しようとする課題】
通常１つの苗載台に対しては１組の植付機構を備えて、１行程の作業では１条分の植付けしか行えず多条植えを行う場合にはその条数分に応じた行程の作業を行う必要がある。そのため比較的植付条間隔の狭い野菜苗では１つの苗載台に対し複数組の植付機構を設けて、１つの苗トレイから２条分の苗取出しを行うと共に、同時２条の苗植付けを行うなど、１行程の作業で複数条の植付けを構造のものがあるが、この場合２つの苗取出爪など植付機構のピッチが狭いため、この駆動機構の構成が極めて複雑化する不具合がある。
【０００３】
【課題を解決するための手段】
本発明は以上の課題を解決するために、次の如く構成したものである。
【０００４】
駆動軸（３５）を中心としたロータリケース（３４）の１８０度対称位置に、２つの爪ケース（３６）の基端爪ケース軸（３７）を取付け、これら爪ケース（３６）の先端に苗取出爪（２３）をそれぞれ取付け、１つの苗トレイ（２２）より、該左右２つの苗取出爪（２３・２３）によって同時２条分の苗取出しを行うようにした野菜移植機において、該苗載台（２１）の左右中央ラインに対し左右の苗取出爪（２３・２３）の駆動機構（９７）を左右略対称に配置させ、該駆動機構（９７）の入力部である伝動チェン（８２）を、機体外側に配置させ、ロータリケース（３４）と、爪ケース（３６）と、苗取出爪（２３）の順に機体内側に向って駆動機構（９７）を配置させ、該ロータリケース（３４）に対する爪ケース（３６）の回動を規制する回動規制バネ（７１）を、該ロータリケース（３４）と爪ケース（３６）間に介設すると共に、該回動規制バネ（７１）に抗して、該爪ケース（３６）を強制回動させる爪ガイド（７７）を爪ケース（３６）と苗取出爪（２３）間に配置させたものである。
【０００５】
【発明の実施の形態】
以下本発明の実施例を図面に基づいて詳述する。図１は移植機の全体側面図、図２は同全体平面図、図３は移植部の側面説明図、図４は移植部の平面説明図である。
【０００６】
図中（１）はエンジン（２）を搭載する移動機体、（３）は前後スライドフレーム（４）（５）に機体（１）を左右スライド自在に支持する固定フレーム、（６）はスライドアーム（７）を介して機体（１）をスライド動作させる油圧式スライドシリンダ、（８）はミッションケース（９）からの駆動横軸（１０）に左右伝動ケース（１１）を介し上下揺動自在に支持する左右の後車輪、（１２）は前記固定フレーム（３）の前端側にアクスルフレーム（１３）を介し上下揺動自在に支持する左右の前車輪、（１４）は固定フレーム（３）後端側のスイング軸（１５）を介し前後車輪（１２）（８）を上下揺動させる油圧式スイングシリンダ、（１６）は機体（１）の後方にシャーシフレーム（１７）を介し装設する移植部である苗供給装置、（１８）は左右の後車輪（８）間に装設してミッションケース（９）に植付駆動ケース（１９）を介して連結させる苗植付装置、（２０）は畝面（Ｍ）を鎮圧する左右１対の鎮圧ローラであり、前記苗供給装置（１６）の左右往復移動する苗載台（２１）上の苗トレイ（２２）より１株分のポット苗（Ｎ）を箸形苗取出爪（２３）でもって取出し、この取出されたポット苗（Ｎ）を前記苗植付装置（１８）のマルチカッタ（２４）と連動して上下動するホッパ開孔形苗植付爪（２５）に放出供給して、操向ハンドル（２６）操作による機体（１）の走行中畝面（Ｍ）に一定間隔毎のポット苗（Ｎ）の植付け（移植）を行うように構成すると共に、機体（１）の左右スライド調節によって植付条位置の変更などを行うように構成している。
【０００７】
また、（２７）は前記スイングシリンダ（１４）を動作させて機体（１）を昇降操作する昇降レバー、（２８）は植付クラッチの入切を行う植付クラッチレバー、（２９）は走行速度を変速する主変速レバー、（３０）は機体（１）を左右方向に位置調節するスライド調節レバー、（３１）は左右後車輪（８）の駆動を停止させて機体（１）を旋回操作する左右サイドクラッチレバーである。
【０００８】
図３乃至図４に示す如く、前記苗取出爪（２３）及び苗植付爪（２５）は、１つの苗載台（２１）の苗トレイ（２２）に対し一定の間隔を有して左右に並設させ、同位相駆動して１つの苗トレイ（２２）から２条分の苗取りと同時２条の苗植付けを行うと共に、各苗取出爪（２３）及び苗植付爪（２５）における各１条分の同一爪運動軌跡（Ａ）（Ｂ）上で１８０度位相を異ならせて、１つの運動軌跡（Ａ）（Ｂ）中で２回の苗取り及び苗植付けを行うように設けて、苗取速度及び苗植付速度を略２倍に増速させるように構成している。
【０００９】
図５乃至図２０に示す如く、前記苗取出爪（２３）は、前記シャーシフレーム（１７）の固定ブラケット（３２）に位相調節板（３３）を固定させ、一方向に等速回転させるロータリケース（３４）を取出爪駆動軸（３５）を介して調節板（３３）に支持させ、駆動軸（３５）を中心としたロータリケース（３４）の１８０度対称位置に２つの爪ケース（３６）の基端爪ケース軸（３７）を取付け、これら爪ケース（３６）の先端に苗取出爪（２３）をそれぞれ取付けている。
【００１０】
また、前記ロータリケース（３４）内の取出爪駆動軸（３５）にサンギヤ（３８）を遊嵌させ、調節板（３３）にサンギヤ（３８）を位相調節自在に固定させると共に、サンギヤ（３８）と同一歯数のアイドルギヤ（３９）及びプラネタリギヤ（４０）を中間軸（４１）及びケース軸（３７）を介してロータリケース（３４）内に支持させるもので、各ギヤ（３８）（３９）（４０）を不等速ギヤに設け、中央のサンギヤ（３８）に２つのアイドルギヤ（３９）を介し２つのプラネタリギヤ（４０）を一列且つ対称に常噛させ、ロータリケース（３４）の等速１回転中に同一爪運動軌跡（Ａ）で１８０度位相を異ならせて、交互に苗トレイ（２２）より２株分の苗（Ｎ）の取出しを行うように構成している。
【００１１】
さらに、前記苗取出爪（２３）を左右に開閉する爪開閉カム（４２）を爪ケース（３６）に設けるもので、爪ケース軸（３７）を貫挿させロータリケース（３４）に位置調節自在に固定させる駆動カム軸（４３）に開閉カム（４２）を連結させると共に、Ｌ形の爪ケース（３６）先端側で開閉ロッド（４４）（４５）を中心として苗取出爪（２３）の左右爪体（２３ａ）（２３ｂ）を開閉する左右開閉アーム（４６）（４７）に従動カム（４８）及び揺動板（４９）を介し開閉カム（４２）を連結させている。前記従動カム（４８）は爪ケース（３６）内で従動カム軸（５０）に基端を固定させ、先端一側の開閉カム部（４８ａ）を開閉カム（４２）の外周カム面（４２ａ）に摺接させ、爪ケース（３６）外側に突出させるカム軸（５０）の軸端にＬ形の揺動板（４９）基端を固定させ、左右方向にＬ形状に折曲げる揺動板（４９）の先端折曲部（４９ａ）に突出高さ調節自在に調節ネジ軸（５１）を取付け、開閉アーム（４７）の他端側に折曲形成する開閉部（４７ａ）に前記ネジ軸（５１）の下端先端部（５１ａ）を当接させるように構成している。
【００１２】
また、前記開閉アーム（４６）（４７）は開閉ロッド（４４）（４５）に固定させ、一方のアーム（４６）に形成する半円形係合凸部（４６ａ）と他方のアーム（４７）に形成する半円形係合凹部（４７ａ）とを係合連結させ、一方のアーム（４６）と爪ケース（３６）間に爪開方向用の捩りコイルバネ（５２）を介設し、他方のアーム（４７）の切欠溝（５３）に固設するナット部材（５４）に突出高さ調節自在にボルト部材（５５）を取付け、爪ケース（３６）の外側面に固設するストッパ部材（５６）の折曲ストッパ部（５６ａ）に前記バネ（５２）力でボルト部材（５５）の頭部を当接させて左右爪体（２３ａ）（２３ｂ）の開保持を図る一方、開閉カム（４２）の回転で揺動板（４９）を揺動させネジ軸（５１）の先端部（５１ａ）でアーム（４７）をバネ（５２）力に抗し一定量下方向に揺動させるとき左右爪体（２３ａ）（２３ｂ）を閉とさせて苗の挾持を行うように構成している。
【００１３】
さらに、左右爪体（２３ａ）（２３ｂ）の先端外側に先端輪状部（５７）をそれぞれ遊嵌して上下動させる線状の左右苗押出部材（５８）を設け、爪ケース（３６）外側のＬ形状苗押出操作部材（５９）に取付けるもので、苗押出操作部材（５９）は左右苗押出部材（５８）の各上端を軸（６０）を介し一端側に連結させる左右苗押出操作板（６１）（６２）を備え、左右の操作板（６１）（６２）の他端間を横軸（６３）で相互に連結し、爪ケース（３６）側の操作板（６２）の略中間部を回動操作軸（６４）を介し爪ケース（３６）に回動自在に支持させると共に、操作軸（６４）外周で操作板（６２）と前記ストッパ部材（５６）のバネ圧調節取付部（５６ｂ）と間に、苗押出部材（５８）に対し下動させる方向のバネ力を付勢する捩りコイルバネ（６５）を介設させている。そして前記操作軸（６４）には前記従動カム（４８）の先端他側に形成する苗押出カム部（４８ｂ）に摺接させる押出従動カム（６６）を固設し、前記開閉カム（４２）の回動によって苗取出爪（２３）が開放状態となるときには、従動カム（４８）（６６）及び操作板（６１）（６２）を介し苗押出部材（５８）を下動させて苗取出爪（２３）より苗（Ｎ）を押出すように構成している。
【００１４】
また、前記爪ケース軸（３７）はプラネタリギヤ（４０）に対し一体で駆動カム軸（４３）に対しては遊転自在に設け、駆動カム軸（４３）に筒軸（６７）及びボス部材（６８）を介し爪ケース（３６）を回転自在に支持させると共に、ボス部材（６８）の外周でケース軸（３７）の軸端に固設するバネ取付座（６９）と爪ケース（３６）に固設する前記カム軸（５０）のボス（７０）と間に、回動規制バネである捩りコイルバネ（７１）を張設して、常時はコイルバネ（７１）のバネ力で爪ケース（３６）の側面に一体連結する位置固定部材（７２）の調節ボルト（７３）をバネ取付座（６９）のストッパ（７４）に当接させて、爪ケース（３６）を爪ケース軸（３７）に一体的に連結するように構成している。
【００１５】
そして、前記爪ケース（３６）の外周で苗取出爪（２３）とは反対方向側にローラ軸（７５）を介しガイドローラ（７６）を設けると共に、ローラガイド面（７７ａ）に前記ローラ（７６）を転接させて案内する爪ガイド（７７）を苗取出爪（２３）と爪ケース（３６）間でロータリケース（３４）の駆動軸（３５）より前方位置に配設するもので、シャーシフレーム（１７）の前端側を固設する横フレーム（７８）にブラケット（７９）を介し爪ガイド（７７）を固定させて、図１２に示す如く、ロータリケース（３４）の１回転中ローラ（７６）と爪ガイド（７７）とが非接触のとき爪ケース軸（３７）と爪ケース（３６）とを一体連結状態とさせて爪ケース（３６）の苗取出位置近傍ではプラネタリギヤ（４０）の回転による同図２点鎖線に示す如き軌跡（Ａ１）に沿った苗取出爪（２３）の先端を上向きとした苗取出し動作を行うと共に、ローラ（７６）が爪ガイド（７７）に接触しガイド面（７７ａ）に沿って下動するとき同図点線に示す如き軌跡（Ａ２）に沿った苗取出爪（２３）の先端を下向きとした苗植付爪（２５）に対する苗受継ぎ動作を行うように構成している。このように２つの軌跡（Ａ１）（Ａ２）の合成によって形成される運動軌跡（Ａ）に沿って苗取出爪（２３）が上下に移動するとき、ロータリケース（３４）と爪ケース（３６）の相対位置の変化によって爪体（２３ａ）（２３ｂ）を開閉させ、苗トレイ（２２）内への苗取出爪（２３）の突入時に爪体（２３ａ）（２３ｂ）を閉とさせて苗（Ｎ）を挾持する一方、苗取出爪（２３）を苗植付爪（２５）との受継ぎ位置まで下動させるとき爪体（２３ａ）（２３ｂ）を開とさせて苗（Ｎ）を下方に落下させるように構成している。
【００１６】
また、前記取出爪駆動軸（３５）は、ミッションケース（９）に連動連結する植付クラッチケース（８０）からの出力軸（８１）に駆動入力部である伝動チェン（８２）に連結させて、植付クラッチ（８３）のオン時に左右２組（２条分）の苗取出爪（２３）を同位相で駆動して、１つの苗トレイ（２２）より２条分のポット苗（Ｎ）の同時取出しを行うと共に、苗植付爪（２５）に同時受継ぎを行うように構成している。
【００１７】
さらに前記苗載台（２１）は、シャーシフレーム（１７）に固設する左右サイドフレーム（８４）間のガイドレール（８５）と横送り駆動軸（８６）に左右往復動自在に支持させると共に、苗載台（２１）に縦送り駆動軸（８７）を介し支持する駆動スプロケット（８８）と、遊転軸（８９）を介し支持する遊転スプロケット（９０）間に張架する縦送りチェン（９１）の所定間隔毎の縦送りピンを苗トレイ（２２）のポット底部間に掛合させて、苗載台（２１）が左右移動終端に到達したとき縦送り軸（９２）の縦送りカム（９３）を介して苗トレイ（２２）を１ピッチ分縦送りするように構成している。
【００１８】
また、前記苗植付爪（２５）は植付駆動ケース（１９）の植付駆動軸（９４）に一体的に取付けるロータリケース（９５）の両端側に設けて、苗取出爪（２３）同様同一爪運動軌跡（Ｂ）上で１８０度位置異ならせて苗取り動作を行うように設けたものである。
【００１９】
また、図５、図７に示す如く、前記植付クラッチ（８３）は２つの苗取出爪（２３）が苗取軌跡（Ａ）の上側位置で、苗トレイ（２２）に接近する側の爪（２３）が苗トレイ（２２）内に突入する直前位置のとき切動作可能に設けたもので、植付クラッチ（８３）の切時に苗載台（２１）から苗トレイ（２２）の取外しや苗載台（２１）に苗トレイ（２２）の挿入供給作業などを容易に行うことを可能とさせるように構成している。
【００２０】
また、図８に示す如く、一方の苗取出爪（２３）が苗トレイ（２２）に突入して苗（Ｎ）を上方に取出す苗取り動作を行うとき、１８０度位相の異なる他方の苗取出爪（２３）は一方の苗取出爪（２３）と交差しこの上方を通過する状態となるため、左右爪体（２３ａ）（２３ｂ）の上端側間には他方の苗取出爪（２３）が通過するのに必要な空間（９６）を形成させて、小さな苗取軌跡（Ａ）上で１８０度位相の異なる２つの苗取出爪（２３）が支障なく苗取動作を行うように構成している。
【００２１】
本実施例は上記の如く構成するものにして、苗取出爪（２３）の運動軌跡（Ａ）はプラネタリギヤ（４０）の回転で爪ケース（３６）を首振りさせて図１２の２点鎖線に示す如き爪（２３）先端を上向きとさせる横方向の軌跡（Ａ１）と、プラネタリギヤ（４０）による爪ケース（３６）の首振り中に爪ガイド（７７）によって爪ケース（３６）の動きを一部規制して得る図１２の点線に示す如き、爪（２３）先端を下向きとする縦方向の軌跡（Ａ２）との合成によって形成したもので、ロータリケース（３４）の回転中心となる駆動軸（３５）のラインより上方側に苗トレイ（２２）の苗取出部を設け、駆動軸（３５）より上方側で軌跡（Ａ１）に沿う苗取り動作を行わせてロータリケース（３４）の回転中苗トレイ（２２）の苗とロータリケース（３４）とが干渉するなどの不都合を防止すると共に、苗植付爪（２５）に対しては前記ガイド（７７）によって苗植付爪（２３）の先端を略垂直下向きに姿勢を変更させて確実な苗の受継ぎを行うものである。
【００２２】
また、苗取出爪（２３）の苗取動作中にあっては、爪（２３）の開閉と苗押出部材（５８）の上下動が１つの開閉カム（４２）によって行われるもので、図１７に示す如く開閉カム（４２）のカム面（４２ａ）の凹部に従動カム（４８）の開閉カム部（４８ａ）を突入させるとき、苗取出爪（２３）を開、苗押出部材（５８）を最下動位置とさせ、この状態より図１８に示す如く従動カム（４８）の開閉カム部（４８ａ）がカム面（４２ａ）の凸部に移行するとき苗取出爪（２３）を開から閉、苗押出部材（５８）を下から上へと動作させて苗トレイ（２２）内の苗（Ｎ）を苗取出爪（２３）に挾持して苗取りを行う一方、図１９、図２０に示す如く苗取出爪（２３）の最下動位置で従動カム（４８）の開閉カム部（４８ａ）がカム面（４２ａ）の凸部より凹部に移行するとき、苗取出爪（２３）を閉より開、苗押出部材（５８）を上から下へと動作させて苗取出爪（２３）に挾持した苗（Ｎ）の放出を行うものである。このように１つの開閉カム（４２）で爪（２３）の開閉と苗押出部材（５８）の上下動をタイミング良好に行うことができると共に、カム２枚分のスペースも必要なく構成簡潔にして爪ケース（３６）内にコンパクトに組込可能にできる。
【００２３】
上記からも明らかなように、１つの苗トレイ（２２）より左右２つの苗取出爪（２３）によって同時２条分の苗取出しを行うようにした野菜移植機において、苗載台（２１）の左右中央ラインに対し左右の苗取出爪（２３）のロータリケース（３４）及び爪ケース（３６）などで構成する駆動機構（９７）を左右略対称に配置させたことによって、同一構造の駆動機構（９７）を左右にコンパクト且つバランス良好に配備して、同時２条の植付けを容易に可能とさせることができる。
【００２４】
また、駆動機構（９７）の入力部である伝動チェン（８２）を機体外側に配置させ、ロータリケース（３４）・爪ケース（３６）・苗取出爪（２３）の順に機体内側に向って駆動機構（９７）を配置させたことによって、スペースの広い苗取出爪（２３）の機体外方側に駆動機構（９７）をコンパクトに組込んで同時２条の植付けを容易に可能とさせることができる。
【００２５】
さらに、ロータリケース（３４）に対する爪ケース（３６）の回動を規制する規制バネ（７１）をロータリケース（３４）と爪ケース（３６）間に介設すると共に、規制バネ（７１）に抗し爪ケース（３６）を強制回動させる爪ガイド（７７）を爪ケース（３６）と苗取出爪（２３）間に配置させたことによって、規制バネ（７１）や爪ガイド（７７）を駆動機構（９７）にコンパクトに組込んで苗取出爪（２３）を常に適正姿勢に保った良好な苗取出作業を行って、苗取精度を向上させることができる。
【００２６】
また、ロータリケース（３４）の両端に２つの苗取出爪（２３）を取付けて、ロータリケース（３４）の１回転中に苗載台（２１）より２株分の苗（Ｎ）を取出して苗（Ｎ）の植付けを行う移植部である苗供給装置（１６）を設け、ロータリケース（３４）を挾んで一方にこの駆動入力部である伝動チェン（８２）、他方に爪ケース（３６）を介して苗取出爪（２３）を配設すると共に、爪ケース（３６）と苗取出爪（２３）との間隙に苗取出爪（２３）の苗取姿勢を規制する爪ガイド（７７）を配設したことによって、爪ガイド（７７）によって苗取出爪（２３）の姿勢が規制されている状態で、側面視爪ガイド（７７）に爪ケース（２３）及びロータリケース（３４）がラップしている状態のときにも、これらの干渉することのないコンパクト且つ容易な組込みを可能とさせることができる。
【００２７】
さらに、ロータリケース（３４）の出力軸である爪ケース軸（３７）と爪ケース（３６）間に介設したことによって、苗取出爪（２３）を出力軸（３７）と一体或いは爪ガイド（７７）に沿わせる状態とさせて、苗トレイ（２２）から適正に苗（Ｎ）を取出して苗植付爪（２５）に適正に受継ぐまでの苗取出爪（２３）の良好な運動軌跡（Ａ）を容易に形成して、苗（Ｎ）の取出精度を向上させることができる。
【００２８】
また、ロータリケース（３４）の両端に２つの苗取出爪（２３）を不等速ギヤ（３８）（３９）（４０）を介して取付けて、ロータリケース（３４）の１回転中に苗載台（２１）より２株分の苗（Ｎ）を取出して苗（Ｎ）の植付けを行う苗供給装置（１６）を設け、ロータリケース（３４）に回動自在に苗取出爪（２３）の爪ケース（３６）を支持させると共に、苗取出爪（２３）の苗取姿勢を変更させる爪ガイド（７７）を設けたことによって、苗取出爪（２３）が苗載台（２１）の苗トレイ（３２）より上向き姿勢で苗（Ｎ）を取出してから下向き姿勢で苗植付爪（２５）に受継ぐまでの良好な運動を容易に可能とさせて、苗取出精度を向上させることができる。
【００２９】
さらに、ロータリケース（３４）と爪ケース（３６）間に回動規制バネ（７１）を介設して、規制バネ力で苗取出爪（２３）の回動を規制し定位置に苗取出爪（２３）を保持させることによって、規制バネ力による苗取出爪（２３）の回動規制時には不等速ギヤ（３８）（３９）（４０）を介する苗取出爪（２３）の上向き方向の首振り動作によって苗トレイ（２２）から苗（Ｎ）をスムーズに引抜いて取出して、苗取出爪（２３）の苗取出精度を向上させることができる。
【００３０】
またさらに、爪ケース（３６）に設けたガイドローラ（７６）を爪ガイド（７７）に当接させ、規制バネ（７１）に抗し苗取出爪（２３）を回動させて苗取り姿勢を変更させることによって、苗トレイ（２２）からの苗（Ｎ）を挾持する苗取出爪（２３）を爪ガイド（７７）によって強制的に下向き方向に回動して苗植付爪（２５）に適正に受継ぎさせて、苗植付爪（２５）への受継ぎ性を向上させることができる。
【００３１】
また、同一軌跡（Ａ）上で１８０度位相を異ならせる２つの苗取出爪（２３）を１組として苗載台（２１）から１条分の苗取出しを行う苗供給装置（１６）を設け、苗載台（２１）の苗トレイ（２２）に苗取出爪（２３）を突入させる直前位置で苗供給装置（１６）など移植部の駆動停止を可能とさせることによって、苗供給装置（１６）の駆動停止時には常に苗取出爪（２３）を苗トレイ（２２）の突入直前位置に保持して、苗載台（２１）からの苗トレイ（２２）の取出しや苗載台（２１）への苗トレイ（２２）の挿入供給などの作業を容易に可能とさせて、移植作業での能率向上化を図ることができる。
【００３２】
さらに、苗取出爪（２３）の苗トレイ（２２）への突入直前位置で植付クラッチ（８３）の切動作を可能とさせることによって、植付クラッチ（８３）の切による苗取作業中断時などで、苗載台（２１）に対する苗トレイ（２２）の取出しや供給作業を容易とさせて、作業性を向上させることができる。
【００３３】
また、ロータリケース（３４）の両端に２つの苗取出爪（２３）を取付けて、ロータリケース（３４）の１回転中に苗載台（２１）より２株分の苗（Ｎ）を取出して苗（Ｎ）の植付けを行う苗供給装置（１６）を設けると共に、苗取出爪（２３）による苗載台（２１）からの苗取出しをロータリケース（３４）の回転中心である駆動軸（３５）より上側で行うことによって、ロータリケース（３４）と苗載台（２１）上の苗（Ｎ）との接触を防止すると共に、苗（Ｎ）の本葉に邪魔されることなく苗（Ｎ）の下側より苗取出爪（２３）を容易に突入させて上方にスムーズに苗（Ｎ）を引抜く良好な爪軌跡（Ａ）を形成させて苗（Ｎ）の取出精度を向上させることができる。
【００３４】
さらに、苗載台（２１）の苗取出位置より下側にロータリケース（３４）の駆動軸（３５）を配置させることによって、ロータリケース（３４）を苗載台（２１）の苗（Ｎ）に接触させるなどの不都合のない苗取出爪（２３）による良好な苗取出しを可能とさせることができる。
【００３５】
また、左側面視ロータリケース（３４）の回転方向を反時計方向に設けると共に、苗載台（２１）の苗（Ｎ）に対し苗取出爪（２３）先端を苗（Ｎ）の下側より突入させるように設けたことによって、苗取出時に苗取出爪（２３）と苗（Ｎ）との接触を最小に抑えて、苗取出し時における苗取出爪（２３）による苗の損傷などを低減させることができる。
【００３６】
さらに、苗取出爪（２３）の苗突入後は苗載台（２１）上方に略垂直に苗（Ｎ）を引抜くように苗取出爪軌跡（Ａ）を設けたことによって、苗取出爪（２３）によって苗載台（２１）の苗トレイ（２２）から確実に苗（Ｎ）を引抜いて、欠株のない精度良好な移植作業を可能とさせることができる。
【００３７】
また、２つの苗取出爪（２３）を同一苗取出軌跡（Ａ）上で１８０度位相を異ならせて設けると共に、苗取出爪（２３）には苗載台（２１）より他方の苗取出爪（２３）で取出した苗（Ｎ）がこの上方を通過するための空間（９６）を形成させたことによって、植付株間の短く、苗取出爪（２３）の苗取軌跡（Ａ）の小さな苗取条件においても２つの苗取出爪（２３）の干渉を有効に回避させて、同一軌跡（Ａ）上の２つの苗取出爪（２３）による適正な苗取りを可能とさせることができる。
【００３８】
さらに、苗取出爪（２３）は左右爪体（２３ａ）（２３ｂ）をＶ字状に組合せて、左右爪体（２３ａ）（２３ｂ）の上部間の余剰隙間を空間（９６）に形成したことによって、苗取出爪（２３）に形成される余剰隙間を有効に活用して、２つの苗取出爪（２３）相互の干渉を回避させて、この構造のコンパクト化と苗取出爪（２３）の苗取出性能の向上を図ることができる。
【００３９】
【発明の効果】
以上実施例から明らかなように本発明は、駆動軸（３５）を中心としたロータリケース（３４）の１８０度対称位置に、２つの爪ケース（３６）の基端爪ケース軸（３７）を取付け、これら爪ケース（３６）の先端に苗取出爪（２３）をそれぞれ取付け、１つの苗トレイ（２２）より、該左右２つの苗取出爪（２３・２３）によって同時２条分の苗取出しを行うようにした野菜移植機において、該苗載台（２１）の左右中央ラインに対し左右の苗取出爪（２３・２３）の駆動機構（９７）を左右略対称に配置させ、該駆動機構（９７）の入力部である伝動チェン（８２）を、機体外側に配置させ、ロータリケース（３４）と、爪ケース（３６）と、苗取出爪（２３）の順に機体内側に向って駆動機構（９７）を配置させ、該ロータリケース（３４）に対する爪ケース（３６）の回動を規制する回動規制バネ（７１）を、該ロータリケース（３４）と爪ケース（３６）間に介設すると共に、該回動規制バネ（７１）に抗して、該爪ケース（３６）を強制回動させる爪ガイド（７７）を爪ケース（３６）と苗取出爪（２３）間に配置させたものであるから、同一構造の駆動機構（９７）を左右にコンパクト且つバランス良好に配備して、同時２条の植付けを容易に可能とさせることができるものである。
【００４０】
また、駆動機構（９７）の入力部（８２）を機体外側に配置させ、ロータリケース（３４）・爪ケース（３６）・苗取出爪（２３）の順に機体内側に向って駆動機構（９７）を配置させたものであるから、スペースの広い苗取出爪（２３）の機体外方側に駆動機構（９７）をコンパクトに組込んで同時２条の植付けを容易に可能とさせることができるものである。
【００４１】
さらに、ロータリケース（３４）に対する爪ケース（３６）の回動を規制する規制バネ（７１）をロータリケース（３４）と爪ケース（３６）間に介設すると共に、規制バネ（７１）に抗し爪ケース（３６）を強制回動させる爪ガイド（７７）を、爪ケース（３６）と苗取出爪（２３）間に配置させたものであるから、規制バネ（７１）や爪ガイド（７７）を駆動機構（９７）にコンパクトに組込んで苗取出爪（２３）を常に適正姿勢に保って苗取出作業を行って、苗取精度を向上させることができるものである。
【図面の簡単な説明】
【図１】移植機の全体側面図。
【図２】移植機の全体平面図。
【図３】移植部の側面図。
【図４】移植部の平面説明図。
【図５】苗取出部の側面説明図。
【図６】苗取出部の平面説明図。
【図７】苗取出爪部の側面説明図。
【図８】苗取出爪部の交差説明図。
【図９】苗取出爪部の平面説明図。
【図１０】苗取出爪と開閉カムとの関係説明図。
【図１１】苗取出爪の動作説明図。
【図１２】苗取出爪の軌跡の説明図。
【図１３】苗取出爪の側面説明図。
【図１４】苗取出爪の動作説明図。
【図１５】苗取出爪の開状態を示す説明図。
【図１６】苗取出爪の閉状態を示す説明図。
【図１７】苗取出爪と開閉カムの開状態を示す説明図。
【図１８】苗取出爪と開閉カムの開から閉状態を示す説明図。
【図１９】苗取出爪と開閉カムの閉状態を示す説明図。
【図２０】苗取出爪と開閉カムの閉から開状態を示す説明図。
【符号の説明】
（２１）苗載台
（２２）苗トレイ
（２３）苗取出爪
（３４）ロータリケース
（３６）爪ケース
（７１）バネ
（７７）爪ガイド
（８２）伝動チェン（入力部）
（９７）駆動機構[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vegetable transplanter that takes out a vegetable seedling such as an onion, a leaf onion, and a white onion from a seedling tray and transplants the seedling into a field.
[0002]
[Problems to be solved by the invention]
Normally, a single seedling stand is equipped with a set of planting mechanisms, and in the process of one stroke, only one row can be planted. Need to do work. Therefore, for vegetable seedlings with relatively narrow spacing between planting strips, multiple sets of planting mechanisms are provided for one seedling stand, and two seedlings are taken out from one seedling tray and two seedlings are planted simultaneously. In some cases, there is a structure in which a plurality of strips are planted in a single process. In this case, the pitch of the planting mechanism such as two seedling picking nails is narrow, so that the configuration of this drive mechanism becomes extremely complicated. is there.
[0003]
[Means for Solving the Problems]
In order to solve the above problems, the present invention is configured as follows.
[0004]
The proximal claw case shafts (37) of the two claw cases (36) are attached to the rotary case (34) symmetrical about the drive shaft (35), and seedlings are attached to the tips of the claw cases (36). Attach the extraction claw (23), In a vegetable transplanting machine in which two seedlings are removed simultaneously from one seedling tray (22) by the two right and left seedling extraction claws (23, 23), The drive mechanism (97) of the right and left seedling extraction claws (23, 23) is arranged substantially symmetrically on the left and right, The transmission chain (82), which is the input part of the drive mechanism (97), is arranged on the outside of the machine body, and the rotary case (34), the claw case (36), and the seedling extraction claw (23) are directed toward the inside of the machine body in this order. The drive mechanism (97) is disposed, and a rotation restricting spring (71) for restricting the rotation of the claw case (36) relative to the rotary case (34) is provided between the rotary case (34) and the claw case (36). And a claw guide (77) for forcibly turning the claw case (36) against the rotation regulating spring (71) between the claw case (36) and the seedling extraction claw (23). Arranged Is.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is an overall side view of the transplanter, FIG. 2 is an overall plan view thereof, FIG. 3 is an explanatory side view of the transplanted portion, and FIG. 4 is an explanatory plan view of the transplanted portion.
[0006]
In the figure, (1) is a mobile body on which the engine (2) is mounted, (3) is a fixed frame that supports the body (1) to be slidable left and right on the front and rear slide frames (4) and (5), and (6) is a slide arm. A hydraulic slide cylinder that slides the airframe (1) through (7), (8) is swingable up and down via the left and right transmission case (11) on the drive horizontal shaft (10) from the transmission case (9). Left and right rear wheels to be supported, (12) is the left and right front wheels supported on the front end side of the fixed frame (3) via an axle frame (13) so as to be swingable up and down, and (14) is the rear of the fixed frame (3). A hydraulic swing cylinder that swings the front and rear wheels (12) and (8) up and down via a swing shaft (15) on the end side, and (16) is a transplant that is installed behind the fuselage (1) via a chassis frame (17). Seedling supply device (18) is a seedling planting device installed between the left and right rear wheels (8) and connected to the mission case (9) via a planting drive case (19), and (20) is a surface (M). A pair of left and right pressure-reducing rollers for pressure reduction, and chopstick-shaped seedlings of one pot seedling (N) from a seedling tray (22) on a seedling mount (21) that reciprocates left and right of the seedling supply device (16). A hopper open-type seedling planting nail (25) which moves up and down in conjunction with the multi-cutter (24) of the seedling planting device (18), which is taken out with the takeout nail (23) ) And supplying the seedlings (N) at regular intervals to the inner surface (M) of the airframe (1) during operation by operating the steering handle (26). The planting strip position is changed by adjusting the left and right slide of the airframe (1).
[0007]
In addition, (27) is a lifting lever for operating the swing cylinder (14) to raise and lower the body (1), (28) is a planting clutch lever for turning on and off the planting clutch, and (29) is a traveling speed. (30) is a slide adjustment lever for adjusting the position of the airframe (1) in the left-right direction. (31) is for turning the airframe (1) by stopping the driving of the left and right rear wheels (8). Left and right side clutch lever.
[0008]
As shown in FIG. 3 to FIG. 4, the seedling picking claw (23) and the seedling planting claw (25) are left and right with a certain distance from the seedling tray (22) of one seedling mounting stand (21). Are arranged in parallel and driven in the same phase, and two seedlings are taken from one seedling tray (22) and two seedlings are planted simultaneously, and each seedling extraction claw (23) and seedling planting claw (25) So that seedlings and seedlings are planted twice in one motion trajectory (A) (B) with a phase difference of 180 degrees on the same nail motion trajectory (A) (B) It is configured to increase the seedling collection speed and the seedling planting speed approximately twice.
[0009]
As shown in FIGS. 5 to 20, the seedling picking claw (23) is a rotary case in which the phase adjusting plate (33) is fixed to the fixing bracket (32) of the chassis frame (17) and is rotated at a constant speed in one direction. (34) is supported by the adjustment plate (33) via the take-out claw drive shaft (35), and the two claw cases (36) are positioned 180 degrees symmetrical to the rotary case (34) around the drive shaft (35). The base end claw case shaft (37) is attached, and the seedling extraction claw (23) is attached to the tip of the claw case (36).
[0010]
Further, the sun gear (38) is loosely fitted to the take-out pawl drive shaft (35) in the rotary case (34), and the sun gear (38) is fixed to the adjustment plate (33) so that the phase can be adjusted, and the sun gear (38). The idle gear (39) and the planetary gear (40) having the same number of teeth are supported in the rotary case (34) through the intermediate shaft (41) and the case shaft (37). Each gear (38) (39) (40) is provided on the inconstant speed gear, and the two planetary gears (40) are always meshed in a row and symmetrically with the central sun gear (38) via the two idle gears (39), so that the constant speed of the rotary case (34) is obtained. During one rotation, the same nail motion trajectory (A) is 180 degrees out of phase, and two seedlings (N) are alternately taken out from the seedling tray (22).
[0011]
Further, a claw opening / closing cam (42) for opening and closing the seedling picking claw (23) to the left and right is provided in the claw case (36), and the claw case shaft (37) is inserted through and the position of the rotary case (34) can be adjusted. The open / close cam (42) is connected to the drive cam shaft (43) fixed to the left and right sides of the seedling picking claw (23) with the open / close rods (44) (45) as the center at the tip of the L-shaped claw case (36). The open / close cam (42) is connected via a driven cam (48) and a swing plate (49) that opens and closes the claw bodies (23a) and (23b). The driven cam (48) has a proximal end fixed to the driven cam shaft (50) in the claw case (36), and the opening / closing cam portion (48a) on one side of the distal end is connected to the outer peripheral cam surface (42a) of the opening / closing cam (42). The rocking plate (49) is fixed to the shaft end of the camshaft (50) that protrudes to the outside of the claw case (36). 49) The adjustment screw shaft (51) is attached to the tip bent portion (49a) of the open / close arm (47a) so that the protruding height can be adjusted, and the screw shaft (47a) is bent to the other end of the open / close arm (47). 51), the lower end tip (51a) is configured to contact.
[0012]
The open / close arm (46) (47) is fixed to the open / close rod (44) (45), and the semicircular engagement protrusion (46a) formed on one arm (46) and the other arm (47). The semicircular engaging recess (47a) to be formed is engaged and connected, and a torsion coil spring (52) for opening the claw is interposed between one arm (46) and the claw case (36), and the other arm ( A bolt member (55) is attached to a nut member (54) fixed to the notch groove (53) of 47) so that the protruding height can be adjusted, and a stopper member (56) fixed to the outer surface of the claw case (36) is mounted. The head of the bolt member (55) is brought into contact with the bending stopper portion (56a) by the spring (52) force to open and hold the left and right claws (23a) (23b), while the opening / closing cam (42) Rotating the rocking plate (49) by rotation causes the tip (51a) of the screw shaft (51). In is configured such arm (47) to the right and left pawl body (23a) (23b) is closed when swinging to one quantitative downward against the spring (52) force performs clamping seedlings.
[0013]
Further, linear left and right seedling pushing members (58) for loosely fitting the tip ring-shaped portions (57) on the outer ends of the left and right nails (23a) and (23b) and moving up and down are provided. The left and right seedling extrusion operation member (59) is attached to the L-shaped seedling extrusion operation member (59), and the seedling extrusion operation member (59) connects the upper ends of the left and right seedling extrusion member (58) to one end side via the shaft (60). 61) (62), the other ends of the left and right operation plates (61) (62) are connected to each other by a horizontal axis (63), and a substantially middle portion of the operation plate (62) on the claw case (36) side. Is rotatably supported on the claw case (36) via the rotation operation shaft (64), and the spring pressure adjustment mounting portion (of the operation plate (62) and the stopper member (56) on the outer periphery of the operation shaft (64) ( 56b) and a screw for biasing the spring force in the direction of moving downward with respect to the seedling extruding member (58). It is made to interposed a coil spring (65). The operation shaft (64) is fixedly provided with a pusher driven cam (66) slidably in contact with a seedling pusher cam portion (48b) formed on the other end of the driven cam (48), and the open / close cam (42). When the seedling picking claw (23) is opened by the rotation of the seedling, the seedling pushing member (58) is moved downward via the driven cams (48) (66) and the operation plates (61) (62). The seedling (N) is extruded from (23).
[0014]
The claw case shaft (37) is provided integrally with the planetary gear (40) so as to be freely rotatable with respect to the drive cam shaft (43), and the drive cam shaft (43) is provided with a cylindrical shaft (67) and a boss member ( 68) via a spring mounting seat (69) and a claw case (36) fixed to the shaft end of the case shaft (37) on the outer periphery of the boss member (68). A torsion coil spring (71), which is a rotation restricting spring, is stretched between the boss (70) of the cam shaft (50) to be fixed, and the claw case (36) is always applied by the spring force of the coil spring (71). The claw case (36) is integrated with the claw case shaft (37) by abutting the adjusting bolt (73) of the position fixing member (72) integrally connected to the side surface of the spring with the stopper (74) of the spring mounting seat (69). Are connected to each other.
[0015]
A guide roller (76) is provided on the outer periphery of the claw case (36) on the opposite side of the seedling picking claw (23) via a roller shaft (75), and the roller (76) is provided on a roller guide surface (77a). The claw guide (77) that is guided by rolling is disposed between the seedling extraction claw (23) and the claw case (36) at a position forward of the drive shaft (35) of the rotary case (34). A claw guide (77) is fixed to a horizontal frame (78) fixed to the front end side of the frame (17) via a bracket (79), and as shown in FIG. 76) and the claw guide (77) are not in contact with each other, the claw case shaft (37) and the claw case (36) are integrally connected, and the planetary gear (40) of the claw case (36) is in the vicinity of the seedling removal position. 2 points in the figure by rotation The seedling extraction operation is performed with the tip of the seedling extraction claw (23) facing upward along the locus (A1) as shown by the line, and the roller (76) contacts the claw guide (77) along the guide surface (77a). The seedling inheriting operation is performed for the seedling planting claw (25) with the tip of the seedling picking claw (23) downward along the locus (A2) as shown by the dotted line in FIG. . When the seedling picking claw (23) moves up and down along the movement trajectory (A) formed by combining the two trajectories (A1) and (A2), the rotary case (34) and the claw case (36) The nail bodies (23a) and (23b) are opened and closed by the change in the relative position of the nail, and the nail bodies (23a) and (23b) are closed when the seedling extraction claws (23) enter the seedling tray (22). N), while holding the seedling extraction claw (23) down to the position where it is transferred to the seedling planting claw (25), the nail bodies (23a) (23b) are opened and the seedling (N) is moved downward. It is configured to be dropped.
[0016]
The take-out pawl drive shaft (35) is connected to the output shaft (81) from the planting clutch case (80) linked to the transmission case (9) to the transmission chain (82) as a drive input unit. When the planting clutch (83) is turned on, two sets of left and right (two strips) seedling picking claws (23) are driven in the same phase, and two seedlings of pot seedlings (N) from one seedling tray (22) Are simultaneously taken out, and at the same time, the seedling planting claws (25) are simultaneously inherited.
[0017]
Further, the seedling stage (21) is supported by the guide rail (85) between the left and right side frames (84) fixed to the chassis frame (17) and the lateral feed drive shaft (86) so as to be capable of reciprocating left and right. A longitudinal feed chain (90) stretched between a drive sprocket (88) supported on the seedling stage (21) via a longitudinal feed drive shaft (87) and an idle sprocket (90) supported via an idle shaft (89). 91) The vertical feed pins at every predetermined interval are hooked between the pot bottoms of the seedling tray (22), and the vertical feed cam (92) of the vertical feed shaft (92) is reached when the seedling stage (21) reaches the end of the left and right movement. 93), the seedling tray (22) is vertically fed by one pitch.
[0018]
Further, the seedling planting claws (25) are provided on both ends of the rotary case (95) to be integrally attached to the planting drive shaft (94) of the planting drive case (19), and are similar to the seedling picking nails (23). It is provided so as to perform the seedling removing operation by shifting the position by 180 degrees on the same nail movement locus (B).
[0019]
Further, as shown in FIGS. 5 and 7, the planting clutch (83) has two claws on the side close to the seedling tray (22) when the two seedling picking claws (23) are positioned above the seedling picking locus (A). (23) is provided so that it can be turned off immediately before entering the seedling tray (22). When the planting clutch (83) is turned off, the seedling tray (22) can be removed from the seedling stand (21). It is configured so that the seedling tray (22) can be easily inserted and supplied to the seedling stage (21).
[0020]
In addition, as shown in FIG. 8, when one seedling picking claw (23) enters the seedling tray (22) and performs the seedling picking operation for picking up the seedling (N) upward, the other seedling picking up that is 180 degrees out of phase is performed. Since the nail (23) crosses one of the seedling extraction claws (23) and passes above, the other seedling extraction claws (23) are placed between the upper ends of the left and right nail bodies (23a) (23b). A space (96) necessary to pass through is formed, and the two seedling extraction claws (23) having a phase difference of 180 degrees on the small seedling extraction locus (A) are configured to perform seedling operation without any trouble. Yes.
[0021]
In this embodiment, the movement trajectory (A) of the seedling picking claw (23) is swung through the claw case (36) by the rotation of the planetary gear (40) to the two-dot chain line in FIG. The movement of the claw case (36) is controlled by the claw guide (77) while the claw case (36) is swung by the planetary gear (40) and the lateral trajectory (A1) with the claw (23) leading end as shown. As shown by the dotted line in FIG. 12 obtained by restricting the part, it is formed by combining with the vertical locus (A2) with the tip of the claw (23) facing downward, and the drive shaft that becomes the rotation center of the rotary case (34) The seedling extraction part of the seedling tray (22) is provided above the line (35), and the rotary case (34) is rotated by performing the seedling removal operation along the locus (A1) above the drive shaft (35). Seedlings and rotor in the seedling tray (22) In addition to preventing inconvenience such as interference with the case (34), the posture of the seedling planting claw (25) is changed to be substantially vertically downward by the guide (77). To ensure the succession of seedlings.
[0022]
Further, during the seedling removing operation of the seedling picking claw (23), the opening and closing of the claw (23) and the vertical movement of the seedling pushing member (58) are performed by one opening and closing cam (42). When the opening / closing cam portion (48a) of the follower cam (48) is inserted into the recess of the cam surface (42a) of the opening / closing cam (42), the seedling picking claw (23) is opened and the seedling pushing member (58) is opened. When the open / close cam portion (48a) of the driven cam (48) moves to the convex portion of the cam surface (42a) as shown in FIG. 18, the seedling picking claw (23) is closed from the open position. The seedling extruding member (58) is moved from the bottom to the top, and the seedling (N) in the seedling tray (22) is held by the seedling extraction claw (23) to remove the seedling, while FIGS. As shown, the open / close cam portion (48a) of the driven cam (48) is at the cam surface (42) at the lowest position of the seedling picking claw (23). ), When the seedling extraction claw (23) is opened from the closed position and the seedling extruding member (58) is operated from the top to the bottom to hold the seedling extraction nail (23). Is to be released. In this way, the opening and closing of the claw (23) and the vertical movement of the seedling pushing member (58) can be performed with good timing with one opening and closing cam (42), and the structure is simplified without requiring space for two cams. The nail case (36) can be compactly assembled.
[0023]
As is clear from the above, in the vegetable transplanting machine in which the two seedlings are extracted simultaneously from the single seedling tray (22) by the two right and left seedling extraction claws (23), By arranging the drive mechanism (97) composed of the rotary case (34) and the claw case (36) of the right and left seedling picking claws (23) with respect to the left and right center line, the driving mechanism having the same structure is arranged. (97) can be provided in a compact and well-balanced manner on the left and right sides, and simultaneous two-row planting can be easily performed.
[0024]
Further, the transmission chain (82), which is the input part of the drive mechanism (97), is arranged on the outside of the machine body, and the rotary case (34), the claw case (36), and the seedling extraction claw (23) are driven toward the inside of the machine body in this order. By arranging the mechanism (97), the drive mechanism (97) can be compactly incorporated on the outer side of the machine body of the seedling picking claw (23) having a large space, so that two simultaneous planting can be easily performed. it can.
[0025]
Further, a restriction spring (71) for restricting the rotation of the claw case (36) relative to the rotary case (34) is interposed between the rotary case (34) and the claw case (36) and is resistant to the restriction spring (71). By disposing a claw guide (77) for forcibly rotating the claw case (36) between the claw case (36) and the seedling extraction claw (23), the regulation spring (71) and the claw guide (77) are driven. The seedling extraction accuracy can be improved by performing a good seedling extraction operation in which the seedling extraction claw (23) is always kept in an appropriate posture by being compactly incorporated in the mechanism (97).
[0026]
Also, two seedling picking claws (23) are attached to both ends of the rotary case (34), and two seedlings (N) are taken out from the seedling mount (21) during one rotation of the rotary case (34). A seedling supply device (16) which is a transplanting section for planting seedlings (N) is provided, and a rotary case (34) is held between the transmission chain (82) which is the drive input section on one side and a nail case (36) on the other side. And a nail guide (77) for regulating the seedling removal posture of the seedling extraction claw (23) in the gap between the nail case (36) and the seedling extraction claw (23). With the arrangement, the nail case (23) and the rotary case (34) wrap around the side view nail guide (77) while the posture of the seedling extraction nail (23) is regulated by the nail guide (77). These non-interfering controllers even when It may be capable of transfected and easy integration.
[0027]
Further, the seedling picking claw (23) is integrated with the output shaft (37) or a claw guide (by inserting between the claw case shaft (37), which is the output shaft of the rotary case (34), and the claw case (36). 77) Good movement trajectory of the seedling picking nail (23) until the seedling (N) is properly taken out from the seedling tray (22) and properly transferred to the seedling planting nail (25). (A) can be formed easily and the taking-out precision of a seedling (N) can be improved.
[0028]
Further, two seedling picking claws (23) are attached to both ends of the rotary case (34) via inconstant speed gears (38), (39), and (40), so that the seedling is placed during one rotation of the rotary case (34). A seedling supply device (16) for taking out two seedlings (N) from the stand (21) and planting the seedlings (N) is provided, and the rotary case (34) is provided with a rotation of the seedling extraction claws (23). By providing a nail guide (77) for supporting the nail case (36) and changing the seedling take-off position of the seedling take-out nail (23), the seedling take-out nail (23) is placed on a seedling tray on the seedling mount (21). (32) It is possible to easily make a good movement from taking out the seedling (N) in the upward posture and passing it down to the seedling planting claw (25) in the downward posture, and the seedling extraction accuracy can be improved. .
[0029]
Further, a rotation regulating spring (71) is interposed between the rotary case (34) and the claw case (36), and the rotation of the seedling extraction claw (23) is regulated by the regulation spring force, so that the seedling extraction claw is in place. By holding (23), the neck in the upward direction of the seedling picking claw (23) via the inconstant speed gears (38), (39) and (40) when the rotation of the seedling picking claw (23) is restricted by the regulating spring force The seedling (N) can be smoothly pulled out and removed from the seedling tray (22) by the swinging operation, and the seedling extraction accuracy of the seedling extraction claw (23) can be improved.
[0030]
Furthermore, the guide roller (76) provided on the claw case (36) is brought into contact with the claw guide (77), and the seedling removal claw (23) is rotated against the regulating spring (71) to change the seedling removal posture. By changing, the seedling extraction claw (23) that holds the seedling (N) from the seedling tray (22) is forcibly turned downward by the claw guide (77) to the seedling planting claw (25). It can be made to inherit properly and the inheritance to a seedling planting nail | claw (25) can be improved.
[0031]
In addition, a seedling supply device (16) for taking out one seedling from the seedling mounting stand (21) is provided with two seedling extraction claws (23) having a phase difference of 180 degrees on the same locus (A) as a set. The seedling supply device (16) can be stopped by driving the transplanting portion such as the seedling supply device (16) immediately before the seedling extraction claw (23) is inserted into the seedling tray (22) of the seedling mount (21). When the drive is stopped, the seedling picking claw (23) is always held at the position immediately before the seedling tray (22) enters, and the seedling tray (22) is taken out from the seedling placing stand (21) or to the seedling placing stand (21). This makes it possible to easily perform operations such as insertion and supply of the seedling tray (22), thereby improving the efficiency of the transplanting operation.
[0032]
Furthermore, by enabling the disengaging operation of the planting clutch (83) at a position immediately before the seedling picking claw (23) enters the seedling tray (22), when the seedling harvesting operation is interrupted by disengaging the planting clutch (83). Thus, it is possible to facilitate the work of taking out and supplying the seedling tray (22) to the seedling placing stand (21) and to improve workability.
[0033]
Also, two seedling picking claws (23) are attached to both ends of the rotary case (34), and two seedlings (N) are taken out from the seedling mount (21) during one rotation of the rotary case (34). A seedling supply device (16) for planting seedlings (N) is provided, and seedling removal from the seedling mount (21) by the seedling picking claws (23) is a drive shaft (35) that is the rotation center of the rotary case (34). ) To prevent contact between the rotary case (34) and the seedling (N) on the seedling stand (21) and to prevent the seedling (N) from being disturbed by the true leaves of the seedling (N). ) The seedling extraction claw (23) is easily inserted from the lower side to form a good claw locus (A) for smoothly pulling out the seedling (N) upward to improve the extraction accuracy of the seedling (N). Can do.
[0034]
Further, the drive shaft (35) of the rotary case (34) is disposed below the seedling take-out position of the seedling stage (21), whereby the rotary case (34) is seeded on the seedling stage (21). It is possible to enable good seedling extraction by the seedling extraction claw (23) without any inconvenience such as contact with the seedling.
[0035]
In addition, the rotational direction of the left-side rotary case (34) is provided in the counterclockwise direction, and the tip of the seedling extraction claw (23) with respect to the seedling (N) of the seedling mount (21) is from the lower side of the seedling (N). By being provided so as to enter, the contact between the seedling extraction claw (23) and the seedling (N) is minimized when the seedling is extracted, and damage to the seedling due to the seedling extraction claw (23) at the time of seedling extraction is reduced. be able to.
[0036]
Furthermore, after the seedling extraction claw (23) has entered the seedling, the seedling extraction claw (A) is provided so as to pull out the seedling (N) substantially vertically above the seedling mount (21). 23), the seedling (N) can be surely pulled out from the seedling tray (22) of the seedling placing stand (21), and a transplanting operation with good accuracy without missing can be performed.
[0037]
In addition, two seedling extraction claws (23) are provided on the same seedling extraction trajectory (A) with a phase difference of 180 degrees, and the seedling extraction claws (23) are provided with the other seedling extraction claws (23) from the seedling mount (21). By forming a space (96) through which the seedling (N) taken out in (23) passes above, the planting strain is short and the seedling picking locus (A) of the seedling picking claw (23) is small. Even under the seedling removal conditions, interference between the two seedling extraction claws (23) can be effectively avoided, and appropriate seedling removal by the two seedling extraction claws (23) on the same locus (A) can be made possible.
[0038]
Further, the seedling picking nail (23) is a combination of the left and right nail bodies (23a) and (23b) in a V-shape, and an excess gap between the upper parts of the left and right nail bodies (23a) and (23b) is formed in the space (96) By effectively utilizing the surplus gap formed in the seedling extraction claw (23), the mutual interference between the two seedling extraction claws (23) can be avoided, and the structure can be made compact and the seedling extraction claw (23) The seedling extraction performance can be improved.
[0039]
【The invention's effect】
As apparent from the above examples, the present invention The proximal claw case shafts (37) of the two claw cases (36) are attached to the rotary case (34) symmetrical about the drive shaft (35), and seedlings are attached to the tips of the claw cases (36). Attach the extraction claw (23), In a vegetable transplanting machine in which two seedlings are removed simultaneously from one seedling tray (22) by the two right and left seedling extraction claws (23, 23), The drive mechanism (97) of the right and left seedling extraction claws (23, 23) is arranged substantially symmetrically on the left and right, The transmission chain (82), which is the input part of the drive mechanism (97), is arranged on the outside of the machine body, and the rotary case (34), the claw case (36), and the seedling extraction claw (23) are directed toward the inside of the machine body in this order. The drive mechanism (97) is disposed, and a rotation restricting spring (71) for restricting the rotation of the claw case (36) relative to the rotary case (34) is provided between the rotary case (34) and the claw case (36). And a claw guide (77) for forcibly turning the claw case (36) against the rotation regulating spring (71) between the claw case (36) and the seedling extraction claw (23). Arranged Therefore, the drive mechanism (97) having the same structure can be arranged in a compact and well-balanced manner on the left and right sides, and simultaneous two-row planting can be easily performed.
[0040]
Further, the input part (82) of the drive mechanism (97) is arranged on the outside of the machine body, and the drive mechanism (97) is directed toward the inside of the machine body in the order of the rotary case (34), the claw case (36), and the seedling extraction claw (23). Since the drive mechanism (97) is compactly incorporated on the outer side of the machine body of the seedling picking claw (23) with a large space, simultaneous two-row planting can be easily performed. It is.
[0041]
Further, a restriction spring (71) for restricting the rotation of the claw case (36) relative to the rotary case (34) is interposed between the rotary case (34) and the claw case (36) and is resistant to the restriction spring (71). Since the claw guide (77) for forcibly rotating the claw case (36) is disposed between the claw case (36) and the seedling extraction claw (23), the regulation spring (71) and the claw guide (77) ) In the drive mechanism (97) in a compact manner, and the seedling extraction claw (23) is always kept in an appropriate posture to perform the seedling extraction operation, thereby improving the seedling extraction accuracy.
[Brief description of the drawings]
FIG. 1 is an overall side view of a transplanter.
FIG. 2 is an overall plan view of the transplanter.
FIG. 3 is a side view of the transplanted part.
FIG. 4 is an explanatory plan view of a transplanted part.
FIG. 5 is an explanatory side view of a seedling extraction unit.
FIG. 6 is an explanatory plan view of a seedling extraction unit.
FIG. 7 is an explanatory side view of a seedling extraction claw portion.
FIG. 8 is a cross-sectional explanatory diagram of a seedling extraction claw portion.
FIG. 9 is an explanatory plan view of a seedling extraction claw portion.
FIG. 10 is a diagram illustrating the relationship between a seedling extraction claw and an opening / closing cam.
FIG. 11 is an operation explanatory view of a seedling extraction claw.
FIG. 12 is an explanatory diagram of a locus of a seedling extraction nail.
FIG. 13 is an explanatory side view of a seedling extraction claw.
FIG. 14 is an operation explanatory view of a seedling extraction claw.
FIG. 15 is an explanatory view showing an open state of a seedling extraction claw.
FIG. 16 is an explanatory view showing a closed state of a seedling extraction claw.
FIG. 17 is an explanatory view showing an open state of a seedling extraction claw and an opening / closing cam.
FIG. 18 is an explanatory view showing a state where the seedling extraction claw and the opening / closing cam are opened to closed.
FIG. 19 is an explanatory view showing a closed state of a seedling extraction claw and an opening / closing cam.
FIG. 20 is an explanatory view showing a state where the seedling extraction claw and the opening / closing cam are closed to open.
[Explanation of symbols]
(21) Seedling stand
(22) Seedling tray
(23) Seedling removal nails
(34) Rotary case
(36) Nail case
(71) Spring
(77) Nail guide
(82) Transmission chain (input section)
(97) Drive mechanism

Claims

The base claw case shafts (37) of the two claw cases (36) are attached to the rotary case (34) symmetrically about the drive shaft (35), and seedlings are attached to the tips of the claw cases (36). In the vegetable transplanting machine in which the extraction claws (23) are respectively attached, and two seedling extraction claws (23, 23) on the left and right sides are used to simultaneously extract two seedlings from one seedling tray (22). The drive mechanism (97) of the left and right seedling extraction claws (23, 23) is arranged substantially symmetrically with respect to the left and right center line of the mounting base (21), and a transmission chain (82) serving as an input portion of the drive mechanism (97) ) Is arranged on the outside of the machine body, and the drive mechanism (97) is arranged in the order of the rotary case (34), the claw case (36), and the seedling extraction claw (23) toward the inside of the machine body, and the rotary case (34 ) Turn the claw case (36) A rotation regulating spring (71) for regulating is interposed between the rotary case (34) and the claw case (36), and the claw case (36) is moved against the rotation regulating spring (71). A vegetable transplanter characterized in that a claw guide (77) forcibly rotating is arranged between a claw case (36) and a seedling extraction claw (23) .