JP4303397B2

JP4303397B2 - Vegetable transplanter

Info

Publication number: JP4303397B2
Application number: JP2000133168A
Authority: JP
Inventors: 智洋竹山; 俊郎和田; 洋三大垣
Original assignee: Yanma Agricultural Equipment Co Ltd; Kanzaki Kokyukoki Manufacturing Co Ltd
Current assignee: Yanma Agricultural Equipment Co Ltd; Kanzaki Kokyukoki Manufacturing Co Ltd
Priority date: 2000-05-02
Filing date: 2000-05-02
Publication date: 2009-07-29
Anticipated expiration: 2020-05-02
Also published as: JP2001309706A

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】
従来、苗載台の苗トレイから１つの苗取出爪によって取出した苗を１つの苗植付爪に受継いで１条分の苗植付けを行っているが、これら爪の作業速度には限界があって速くできないため、玉ネギなどのような植付株間（８〜１０ｃｍ）の短い作物の場合、車速を遅くして（例えば０．２ｍ／ｓ前後）植付株間の短い作物に対応させるなどしていたが、作業能率が極めて悪いという不都合があった。
【０００３】
このため、同一軌跡上で１８０度位相を異ならせる２つの苗植付爪を設け、これら２つの苗植付爪を１組として従来１つの爪で苗を１株植付けるのに対し、同一時間内に苗を２株植付けるようにした手段があるが、２つの苗植付爪をそれぞれ動作させる２つの爪駆動機構を必要とするなど構造が極めて複雑なものとなる不都合がある。
【０００４】
【課題を解決するための手段】
本発明は、上記課題を解決するために、次の如く構成したものである。
同一軌跡上で１８０度位相を異ならせる２つのホッパ開孔形苗植付爪（２５）を１組として１条分の苗植付けを行う苗植付装置（１８）を備えると共に、中央の駆動軸（４９）を中心として回転するロータリケース（４８）と、該ロータリケース（４８）両端側の２本の出力軸（６０）（６１）にホッパ開孔形苗植付爪（２５）を開閉自在に連結支持させる２つのクランクアーム（６２）（６３）とを備え、該ロータリケース（４８）回転中における２つの苗植付爪（２５）の最大近接時にこれら苗植付爪（２５）間の干渉を防止する隙間（Ｄ）を形成すべく、前記ロータリケース（４８）における中央駆動軸（４９）と、両端側２つの出力軸（６０）（６１）間中央までのロータリケース軸間距離（Ａ）を、２つの出力軸（６０）（６１）間距離（Ｂ）の半分と、クランクアーム（６２）（６３）のアーム長さ（Ｃ）の和（Ｂ／２＋Ｃ）より大きく構成したものである。
【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。
【０００６】
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り、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】
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、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倍に増速させて高速苗取作業及び植付作業を行うように構成している。
【０００９】
前記苗取出爪（２３）は、前記シャーシフレーム（１７）側の固定ブラケットに位相調節板（３２）を固定させ、一方向に等速回転させるロータリケース（３３）を取出爪駆動軸（３４）を介して調節板（３２）に支持させ、駆動軸（３４）を中心としたロータリケース（３３）の１８０度対称位置に２つの爪ケース（３５）の基端爪ケース軸（３６）を取付け、これら爪ケース（３５）の先端に苗取出爪（２３）をそれぞれ取付けて、ロータリケース（３３）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。
【００１０】
また、前記取出爪駆動軸（３４）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からの伝動チェン（３７）に連結させて、植付クラッチのオン時に左右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。
【００１１】
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（３８）間のガイドレール（３９）と横送り駆動軸（４０）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（４１）を介し支持する駆動スプロケット（４２）と、遊転軸（４３）を介し支持する遊転スプロケット（４４）間に張架する縦送りチェン（４５）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（４６）の縦送りカム（４７）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。
【００１２】
図５乃至図１２に示す如く、前記ミッションケース（９）左右両側の植付駆動ケース（１９）内側にそれぞれ取付ける単一のロータリケース（４８）の両端側に２つの苗植付爪（２５）を設けるもので、前記駆動ケース（１９）の植付駆動軸（４９）に一体的にロータリケース（４８）を取付け、ミッションケース（９）からの出力を駆動ケース（１９）内の駆動チェン（１９ａ）を介し植付駆動軸（４９）に伝達してロータリケース（４８）を回転させると共に、該ケース（４８）内の駆動軸（４９）にサンギヤ（５０）を遊嵌させ、サンギヤ（５０）を位相調節板（５１）を介し位相調節自在に植付駆動ケース（１９）に固定させ、サンギヤ（５０）に小径のアイドルギヤ（５２）を介しプラネタリギヤである遊星ギヤ（５３）を常噛させ、ロータリケース（４８）にアイドルギヤ（５２）のギヤ軸（５４）を、またロータリケース（４８）の固定ケース軸（５５）に遊星ギヤ（５３）をそれぞれ回転自在に支持させ、前記サンギヤ（５０）と遊星ギヤ（５３）を同一歯数の伝達比が１のギヤ構成に設けて、ロータリケース（４８）の回転時にも遊星ギヤ（５３）を定常姿勢に保つように構成している。
【００１３】
また、前記ケース軸（５５）に小径の固定ギヤ（５６）を一体的に取付け、該ギヤ（５６）と同一歯数でギヤ（５６）を中心とした１８０度対向位置でギヤ（５６）に常噛させる２つの出力ギヤ（５７）（５８）と、前記ケース軸（５５）を中心としてロータリケース（４８）に回転自在に支持するギヤケース（５９）とを設け、遊星ギヤ（５３）とギヤケース（５９）との間に単一の固定ギヤ（５６）と２つの出力ギヤ（５７）（５８）とを一列状に配設させ、２つの出力ギヤ（５７）（５８）の出力軸であるギヤ軸（６０）（６１）を遊星ギヤ（５３）とギヤケース（５９）に回転自在に支持させて、ロータリケース（４８）の１回転中に２つの出力ギヤ（５７）（５８）のギヤ軸（６０）（６１）をロータリケース（４８）の回転方向と逆方向に１回転させるように構成している。
【００１４】
そして、前記ギヤ軸（６０）（６１）に基端を固着するクランクアーム（６２）（６３）先端に前後アーム軸（６４）（６５）を固設し、前後アーム軸（６４）（６５）の基端を単一の連結板（６６）の両端に遊嵌して、該連結板（６６）によって前後アーム軸（６４）（６５）を一体的に連結させると共に、前記苗植付爪（２５）の前後爪体（２５ａ）（２５ｂ）を開閉する開閉筒軸（６７）（６８）をアーム軸（６４）（６５）先端側に回動自在に支持させ、前記ギヤ軸（６０）（６１）を中心としたクランクアーム（６２）（６３）の回転中も開閉筒軸（６７）（６８）を水平姿勢に保って、苗植付爪（２５）を常に略垂直姿勢で上下動させるように構成している。
【００１５】
また、前記筒軸（６７）（６８）外周に前後開閉アーム（６９）（７０）の中間部を固設させ、後開閉アーム（７０）に突設する半円形突出部（７１）と、前開閉アーム（６９）に形成する半円形陥没部（７２）とを係合連結させ、前後開閉アーム（６９）（７０）の上端側に形成する突出バネ座部（７３）（７４）間に圧縮バネ（７５）を介設して、前後爪体（２５ａ）（２５ｂ）に閉方向のバネ力を付勢すると共に、後開閉アーム（７０）の下端側に固設する結合部材（７６）に突出長さ調節自在にストッパボルト（７７）を取付け、前開閉アーム（６９）の下端下方に延設する開閉部材（７８）に前記バネ（７５）力でストッパボルト（７７）を当接させるとき前後爪体（２５ａ）（２５ｂ）の先端側を下向きとした定常姿勢で閉保持するように構成している。
【００１６】
さらに、前記後アーム軸（６５）に爪開閉カム（７９）を固設させると共に、前記開閉部材（７８）に突出長さ調節自在に開閉ネジ部材（８０）を取付け、苗植付爪（２５）の下動に連動して爪開閉カム（７９）の外周カム面（７９ａ）の凸部をネジ部材（８０）先端に摺接させてネジ部材（８０）を押し下げるときには、図１１矢印に示す如くアーム軸（６４）（６５）を中心として開閉アーム（６９）（７０）を回動させ爪体（２５ａ）（２５ｂ）を開放状態とさせて、爪体（２５ａ）（２５ｂ）内に保持する苗（Ｎ）を畝面（Ｍ）に放出するように構成している。
【００１７】
このように、ロータリケース（４８）の１回転中に該ケース（４８）の両端側に取付ける２つの苗植付爪（２５）を縦長の同一楕円植付軌跡（Ｂ）上で１８０度位相を異ならせて上下運動させるもので、図８に示す如くロータリケース（４８）が横長姿勢となるとき、先端側を内方向に各クランクアーム（６２）（６３）を水平とさせて、２つの苗植付爪（２５）をケース（４８）中心部の略同一高さ位置で近接させ、図７に示す如くロータリケース（４８）が縦長姿勢となるとき、先端側を外方向に各クランクアーム（６２）（６３）を起立させて、２つの苗植付爪（２５）の一方を植付軌跡（Ｂ）の最上動位置に位置させて苗取出爪（２３）からの苗（Ｎ）の受継ぎを行う一方、他方の苗植付爪（２５）を植付軌跡（Ｂ）の最下動位置に位置させて受継ぎ苗（Ｎ）の放出を行って、１条分の苗（Ｎ）の植付けを行うように構成している。
【００１８】
またこの場合、ロータリケース（４８）の植付駆動軸（４９）とケース軸（５５）との間のロータリケース軸間距離をＡ、出力ギヤ（５７）（５８）のギヤ軸（６０）（６１）間の出力軸間距離であるクランク軸間距離をＢ、クランクアーム（６２）（６３）のギヤ軸（６０）（６１）及びアーム軸（６４）（６５）間のクランクアーム長さをＣとするとき、Ａ＞Ｃ＋Ｂ／２の関係を成立させるように設けて、図８に示す如きロータリケース（４８）の水平時にはクランクアーム（６２）（６３）及び連結板（６６）をロータリケース（４８）の駆動軸（４９）を中心とした水平中心ライン上に位置させて、前後の植付爪（２５）が最大近接するときにも、前後植付爪（２５）間には干渉を防止するのに必要な一定以上の隙間（Ｄ）（Ｄ＝２Ａ−２Ｃ−Ｂ）を形成させて、単一のロータリケース（４８）にクランクアーム（６２）（６３）を介し２つの苗植付爪（２５）を取付けて同一軌跡上で１８０度位相を異ならせて苗植付動作を行うコンパクトな苗植付構造においても、２つの苗植付爪（２５）やクランクアーム（６２）（６３）などが相互に干渉することのない良好な植付けを可能とさせるように構成している。
【００１９】
本実施例は上記の如く構成するものにして、単一のロータリケース（４８）の両側に２つの苗植付爪（２５）を取付け、該ロータリケース（４８）の１回転中に２つの苗植付爪（２５）によって、同一植付軌跡（Ｂ）上で１８０度位相を異ならせて苗植付動作を行うように設けて、コンパクトな苗植付構造のもので従来より略２倍に植付速度を増速させた高速植付けを可能とさせるもので、ロータリケース（４８）の１回転中に２つの苗植付爪（２５）が相互に近接する状態のときにも、苗植付爪（２５）やクランクアーム（６２）（６３）など干渉することなくスムーズな植付けを行うものである。
【００２０】
また、ロータリケース（４８）の回転に連動して前後爪体（２５ａ）（２５ｂ）を開閉する開閉アーム（６９）（７０）及び開閉カムなど開閉機構（８１）も、苗植付爪（２５）とクランクアーム（６２）（６３）間で苗植付爪（２５）の略前後中間に軽量且つコンパクトに配置させて、前後の苗植付爪（２５）が相互に近接するときにも開閉機構（８１）同志の干渉を防止し、また苗植付爪（２５）が地面に突入するときも開閉機構（８１）は地面との隙間を確保して苗植付爪（２５）の開閉精度を向上させることができる。
【００２１】
また、前記苗植付爪（２５）は左右爪体（２５ａ）（２５ｂ）の姿勢が常に略同一を維持させるように閉時にはストッパボルト（７７）と開閉部材（７８）によって定常閉姿勢を保つと共に、開時には開閉アーム（６９）（７０）によって前後爪体（２５ａ）（２５ｂ）を略同一量開いて、この苗植付爪（２５）による苗植付精度を向上させることができる。
【００２２】
さらに、前記アーム軸（６４）（６５）間を連結する連結板（６６）を開閉アーム（６９）（７０）と開閉カム（７９）との間に配設することによって、前後のアーム軸（６４）（６５）を一定に保ってこの支持剛性も向上させると共に、ストッパボルト（７７）と開閉部材（７８）間及び開閉アーム（６９）（７０）間相互の位置関係も精度を保って苗植付爪（２５）の開閉を高精度なものとさせることができる。
【００２３】
【発明の効果】
以上実施例から明らかなように本発明は、次のような効果を奏するものである。
同一軌跡上で１８０度位相を異ならせる２つの苗植付爪（２５）を１組として１条分の苗植付けを行う苗植付装置（１８）を備えると共に、中央の駆動軸（４９）を中心として回転するロータリケース（４８）と、該ロータリケース（４８）両端側の出力軸（６０）（６１）に苗植付爪（２５）を開閉自在に連結支持させる２つのクランクアーム（６２）（６３）とを備え、該ロータリケース（４８）回転中における２つの苗植付爪（２５）の最大近接時にこれら苗植付爪（２５）間の干渉を防止する隙間（Ｄ）を形成させたものであるから、単一のロータリケース（４８）に２つの苗植付爪（２５）を取付ける構成コンパクトな手段で植付速度を高速とさせた作業能率良好な植付作業を可能とさせることができるもので、ロータリケース（４８）の回転中苗植付爪（２５）やクランクアーム（６２）（６３）など各部品が干渉するのを防止し良好な高速植付けを行って、苗植付爪（２５）などの耐久性向上と作業能率の向上を図ることができるものである。
【００２４】
また、ロータリケース（４８）における中央駆動軸（４９）と両端側２つの出力軸（６０）（６１）間中央までのロータリケース軸間距離（Ａ）を、２つの出力軸間距離（Ｂ）の半分とクランクアーム（６２）（６３）のアーム長さ（Ｃ）の和（Ｂ／２＋Ｃ）より大に設けたものであるから、ロータリケース（４８）の１回転中にあってロータリケース（４８）が水平姿勢で駆動軸（４９）を中心とした水平ライン上に出力軸（６１）（６１）やクランクアーム（６２）（６３）が一列状態に並ぶときにも、２つの苗植付爪（２５）間やクランクアーム（６２）（６３）間の干渉など防止して、これら苗植付爪（２５）による良好な高速植付けを可能と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】苗植付爪のロータリケースの断面説明図。
【図６】苗植付爪の駆動ギヤ部の説明図。
【図７】ロータリケース回転中の垂直姿勢時の説明図。
【図８】ロータリケース回転中の水平姿勢時の説明図。
【図９】ロータリケース回転中の傾斜姿勢時の説明図。
【図１０】苗植付爪部の平面説明図。
【図１１】爪開閉機構の説明図。
【図１２】苗植付爪の駆動系の説明図。
【符号の説明】
（１８）苗植付操作
（２５）苗植付爪
（４８）ロータリケース
（４９）駆動軸
（６０）（６１）ギヤ軸（出力軸）
（６２）（６３）クランクアーム
（Ａ）ロータリケース軸間距離
（Ｂ）クランク軸間距離（出力軸間距離）
（Ｃ）アーム長さ
（Ｄ）隙間[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vegetable transplanting machine in which a vegetable seedling such as onion, leaf onion, and white onion is taken out from a seedling tray and planted in a field.
[0002]
[Problems to be solved by the invention]
Conventionally, seedlings taken out from a seedling tray of a seedling stand by one seedling picking nail are handed over to one seedling planting nail to plant one seedling, but there is a limit to the working speed of these nails. In the case of short crops between planting stocks (8-10 cm) such as onions, etc., the vehicle speed is slowed down (for example, around 0.2 m / s) to accommodate short crops between planting stocks. However, there was an inconvenience that the work efficiency was extremely poor.
[0003]
For this reason, two seedling planting claws that are 180 degrees out of phase on the same trajectory are provided, and these two seedling planting claws are used as one set, and one seedling is planted with one nail in the same time. There is a means for planting two seedlings inside, but there is a disadvantage that the structure becomes extremely complicated, such as requiring two claw drive mechanisms for operating two seedling planting claws.
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention is configured as follows.
In addition to a seedling planting device (18) for planting seedlings for one line with two hopper open-type seedling planting claws (25) having a phase difference of 180 degrees on the same locus, a central drive shaft A rotary case (48) that rotates about (49) and two output shafts (60) and (61) on both ends of the rotary case (48) can be opened and closed with a hopper open seedling planting claw (25). Two crank arms (62) and (63) to be connected to and supported by, and when the two seedling planting claws (25) are in the maximum proximity when the rotary case (48) is rotating, between these seedling planting claws (25) In order to form a gap (D) for preventing interference, the distance between the rotary case shaft (49) to the center between the central drive shaft (49) in the rotary case (48) and the two output shafts (60) (61) on both ends. A) two output shafts (60) (61) And half the distance (B), and was larger configuration than the sum (B / 2 + C) of the arm length of the crank arm (62) (63) (C ).
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the drawings.
[0006]
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 transplant portion, and FIG. 4 is an explanatory plan view of the transplant portion, in which (1) is an engine (2) (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 the body (1) via the slide arm (7). (8) is a left and right rear wheel that is supported by a drive horizontal shaft (10) from a transmission case (9) so as to be swingable up and down via a left and right transmission case (11). Is a left and right front wheel 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 connected via a swing shaft (15) on the rear end side of the fixed frame (3). Hydraulic spring that swings the front and rear wheels (12) and (8) up and down (16) is a seedling supply device installed behind the fuselage (1) via a chassis frame (17), and (18) is installed between the left and right rear wheels (8) and the transmission case (9). A seedling planting device to be connected to the planter via a planting drive case (19), (20) is a pair of left and right pressure-reducing rollers for suppressing the heel surface (M), and the seedling supply device (16) is reciprocated left and right. One seedling (N) is taken out from the seedling tray (22) on the seedling tray (21) to be removed with a chopstick-shaped seedling picking nail (23), and the removed pot seedling (N) is taken out as the seedling planting. The machine body (1) is running by operating the steering handle (26) by supplying it to the hopper open seedling claw (25) that moves up and down in conjunction with the multi-cutter (24) of the attaching device (18). It is configured so that pot seedlings (N) are planted (transplanted) on the surface (M) at regular intervals. Both are configured to perform such changes planting conditions positions by the left and right sliding adjustment of the machine body (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]
The seedling picking claw (23) and the seedling planting claw (25) are arranged side by side with a certain distance from the seedling tray (22) of one seedling mounting base (21) and driven in phase. Two seedlings are taken from one seedling tray (22) and two seedlings are planted at the same time, and the same nail movement for each one of the seedling removal nails (23) and seedling planting nails (25) Provided so that the seedlings and seedlings are planted twice by changing the phase by 180 degrees on the trajectories (A) and (B), and the seedling collection speed and seedling planting speed are increased by a factor of approximately 2 to increase the speed. It is configured to perform seedling and planting operations.
[0009]
The seedling picking claw (23) takes out a rotary case (33) that fixes a phase adjusting plate (32) to a fixing bracket on the chassis frame (17) side and rotates at a constant speed in one direction. The base claw case shafts (36) of the two claw cases (35) are attached to the rotary case (33) 180 degrees symmetrical about the drive shaft (34). The seedling extraction claws (23) are attached to the tips of the claw cases (35), and the rotary claw movement trajectory (A) is rotated 180 degrees in phase with each other during one rotation of the rotary case (33). 2 seedlings (N) are taken out from the seedling tray (22).
[0010]
The take-out pawl drive shaft (34) is connected to a transmission chain (37) from a planting clutch case that is linked to the transmission case (9). The seedling picking claws (23) are driven in the same phase so that two seedlings (N) are simultaneously picked up from one seedling tray (22) and are simultaneously received by the seedling planting claws (25). It is configured to perform splicing.
[0011]
Further, the seedling platform (21) is supported by a guide rail (39) between the left and right side frames (38) fixed to the chassis frame (17) and a lateral feed drive shaft (40) so as to be reciprocally movable left and right. The vertical feed chain stretched between the drive sprocket (42) supported on the seedling stage (21) via the vertical feed drive shaft (41) and the idle sprocket (44) supported via the idle shaft (43). When the vertical feed pin (45) is hooked between the pot bottoms of the seedling tray (22), the vertical feed cam of the vertical feed shaft (46) is reached when the seedling stage (21) reaches the left and right movement end. The seedling tray (22) is vertically fed by one pitch via (47).
[0012]
As shown in FIGS. 5 to 12, two seedling planting claws (25) are provided at both ends of a single rotary case (48) attached to the inside of the transmission case (19) on both the left and right sides of the transmission case (9). The rotary case (48) is integrally attached to the planting drive shaft (49) of the drive case (19), and the output from the transmission case (9) is sent to the drive chain (19) in the drive case (19). 19a) is transmitted to the planting drive shaft (49) to rotate the rotary case (48), and the sun gear (50) is loosely fitted to the drive shaft (49) in the case (48). ) Is fixed to the planting drive case (19) through the phase adjustment plate (51) so that the phase can be freely adjusted, and the planetary gear (53), which is a planetary gear, is normally meshed with the sun gear (50) through the small-diameter idle gear (52). The The rotary gear (48) supports the gear shaft (54) of the idle gear (52) and the fixed gear shaft (55) of the rotary case (48) rotatably supports the planetary gear (53). 50) and the planetary gear (53) are provided in a gear configuration having the same number of teeth and a transmission ratio of 1, so that the planetary gear (53) is maintained in a steady posture even when the rotary case (48) is rotated.
[0013]
Further, a small-diameter fixed gear (56) is integrally attached to the case shaft (55), and the same number of teeth as that of the gear (56) is set to the gear (56) at a position opposed to 180 degrees centering on the gear (56). There are provided two output gears (57) and (58) that are always engaged, and a gear case (59) that is rotatably supported by the rotary case (48) around the case shaft (55), and the planetary gear (53) and the gear case. A single fixed gear (56) and two output gears (57) (58) are arranged in a row between the two output gears (57) and (58). The gear shafts (60) and (61) are rotatably supported by the planetary gear (53) and the gear case (59), and the gear shafts of the two output gears (57) and (58) are rotated during one rotation of the rotary case (48). (60) (61) is the rotational direction of the rotary case (48) It is configured to one rotation in the reverse direction.
[0014]
The front and rear arm shafts (64) and (65) are fixed to the distal ends of the crank arms (62) and (63), which are fixed to the gear shafts (60) and (61), and the front and rear arm shafts (64) and (65) are fixed. The base end of the arm is loosely fitted to both ends of a single connecting plate (66), and the front and rear arm shafts (64) and (65) are integrally connected by the connecting plate (66). The open / close cylinder shafts (67) and (68) for opening and closing the front and rear claws (25a) and (25b) of the 25) are rotatably supported on the distal ends of the arm shafts (64) and (65), and the gear shaft (60) ( 61) Even when the crank arms (62) and (63) are rotated around the center, the open / close cylinder shafts (67) and (68) are kept in a horizontal posture, and the seedling planting claws (25) are always moved up and down in a substantially vertical posture. It is configured as follows.
[0015]
Further, an intermediate portion of the front and rear opening / closing arms (69) (70) is fixed to the outer periphery of the cylindrical shaft (67) (68), and a semicircular protruding portion (71) protruding from the rear opening / closing arm (70); The semi-circular depression (72) formed on the opening / closing arm (69) is engaged and connected, and compressed between the protruding spring seats (73) (74) formed on the upper end side of the front / rear opening / closing arms (69) (70). A spring (75) is interposed to urge the front and rear claws (25a) (25b) with a spring force in the closing direction, and to a coupling member (76) fixed to the lower end side of the rear opening / closing arm (70). When the stopper bolt (77) is attached so that the protruding length can be adjusted, and the stopper bolt (77) is brought into contact with the opening / closing member (78) extending below the lower end of the front opening / closing arm (69) by the spring (75) force. Closed in a steady posture with the front and rear claws (25a) (25b) facing downward It is configured to so that.
[0016]
Further, a claw opening / closing cam (79) is fixed to the rear arm shaft (65), and an opening / closing screw member (80) is attached to the opening / closing member (78) so that the projecting length can be adjusted. When the projection of the outer peripheral cam surface (79a) of the claw opening / closing cam (79) is slidably brought into contact with the tip of the screw member (80) and the screw member (80) is pushed down in conjunction with the downward movement of As described above, the open / close arms (69) (70) are rotated about the arm shafts (64) (65) to open the claws (25a) (25b) and are held in the claws (25a) (25b). The seedling (N) to be discharged is discharged to the heel surface (M).
[0017]
As described above, during one rotation of the rotary case (48), the two seedling planting claws (25) attached to both ends of the case (48) are moved 180 degrees on the same vertically long elliptical planting locus (B). As shown in FIG. 8, when the rotary case (48) is in a horizontally long posture, the crank arms (62) (63) are leveled with the tip side inward, and two seedlings are moved. When the planting claws (25) are brought close to each other at substantially the same height position at the center of the case (48) and the rotary case (48) is in the vertically long posture as shown in FIG. 62) (63) is erected, and one of the two seedling planting claws (25) is positioned at the most moving position of the planting locus (B) to receive the seedling (N) from the seedling extraction claws (23). While performing splicing, place the other seedling planting claw (25) in the lowest position of planting locus (B) Performing release of seedlings (N) inherited by location, and configured to perform planting Paragraph worth seedlings (N).
[0018]
Further, in this case, the distance between the rotary case shafts between the planting drive shaft (49) of the rotary case (48) and the case shaft (55) is A, and the gear shaft (60) of the output gears (57) (58) ( 61), the distance between the crankshafts, which is the distance between the output shafts between 61), and the crank arm length between the gear shafts (60) (61) and the arm shafts (64) (65) of the crank arms (62) (63). C is provided so as to satisfy the relationship of A> C + B / 2, and when the rotary case (48) as shown in FIG. 8 is horizontal, the crank arms (62) (63) and the connecting plate (66) are connected to the rotary case. Even when the front and rear planting claws (25) are positioned closest to each other on the horizontal center line centered on the drive shaft (49) of (48), interference occurs between the front and rear planting claws (25). More than a certain clearance (D) necessary to prevent (D = 2) -2C-B), two seedling planting claws (25) are attached to a single rotary case (48) via crank arms (62) (63), and the phases are different by 180 degrees on the same locus. Even in a compact seedling planting structure that performs seedling planting operation, it is possible to achieve good planting without interference between the two seedling planting claws (25) and the crank arms (62) (63), etc. It is configured to make it.
[0019]
This embodiment is constructed as described above. Two seedling planting claws (25) are attached to both sides of a single rotary case (48), and two seedlings are rotated during one rotation of the rotary case (48). The planting claw (25) is provided so that the seedling planting operation is performed with a phase difference of 180 degrees on the same planting locus (B). It enables high-speed planting with an increased planting speed, and seedling planting is also possible when two seedling planting claws (25) are close to each other during one rotation of the rotary case (48). The claw (25) and the crank arms (62) (63) are used for smooth planting without interference.
[0020]
In addition, an open / close arm (69) (70) for opening and closing the front and rear claws (25a) (25b) in conjunction with the rotation of the rotary case (48) and an open / close mechanism (81) such as an open / close cam are also provided for the seedling planting claw (25 ) And the crank arm (62) (63) between the front and rear seedling planting claws (25) in a lightweight and compact manner, and when the front and rear seedling planting claws (25) are close to each other, they open and close The mechanism (81) prevents mutual interference, and also when the seedling planting claw (25) enters the ground, the opening / closing mechanism (81) secures a clearance from the ground to open and close the seedling planting claw (25). Can be improved.
[0021]
Further, when the seedling planting claw (25) is closed so that the postures of the left and right claw bodies (25a) and (25b) are always kept substantially the same, the stopper bolt (77) and the opening / closing member (78) maintain a normally closed posture. At the same time, when opening and closing, the front and rear claws (25a) and (25b) are opened by substantially the same amount by the open / close arms (69) and (70), and the seedling planting accuracy by the seedling planting claws (25) can be improved.
[0022]
Further, by arranging a connecting plate (66) for connecting the arm shafts (64) and (65) between the open / close arms (69) (70) and the open / close cam (79), the front and rear arm shafts ( 64) and (65) are kept constant to improve the support rigidity, and the positional relationship between the stopper bolt (77) and the opening / closing member (78) and between the opening / closing arms (69) (70) is also maintained with high accuracy. The planting claw (25) can be opened and closed with high accuracy.
[0023]
【The invention's effect】
As is apparent from the above embodiments, the present invention has the following effects.
A seedling planting device (18) for planting seedlings for one row with two seedling planting claws (25) having a phase difference of 180 degrees on the same locus is provided, and a central drive shaft (49) is provided. A rotary case (48) rotating about the center, and two crank arms (62) for connecting and supporting the seedling planting claws (25) to the output shafts (60) and (61) at both ends of the rotary case (48) so as to be openable and closable. (63), and forming a gap (D) that prevents interference between the seedling planting claws (25) when the rotary case (48) is rotating, when the two seedling planting claws (25) are in maximum proximity. Therefore, two seedling planting claws (25) can be attached to a single rotary case (48). A compact means can be used to enable planting work with good working efficiency by increasing the planting speed. A rotary case ( 8) Rotating seedling planting claws (25) and crank arms (62) (63) to prevent interference of various parts and good high-speed planting, durability of seedling planting claws (25), etc. The improvement and the improvement of work efficiency can be aimed at.
[0024]
Further, the distance (A) between the rotary case shafts to the center between the central drive shaft (49) and the two output shafts (60), (61) on both ends on the rotary case (48) is the distance between the two output shafts (B). And the arm length (C) (B / 2 + C) of the crank arms (62) and (63) is larger than the sum (B / 2 + C) of the rotary case (48). When the output shaft (61) (61) and the crank arms (62) (63) are arranged in a line on the horizontal line centering on the drive shaft (49) in the horizontal posture 48), two seedlings are planted. By preventing interference between the claws (25) and between the crank arms (62) and (63), good high-speed planting with these seedling planting claws (25) can be achieved.
[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 a cross-sectional explanatory view of a rotary case of a seedling planting claw.
FIG. 6 is an explanatory view of a drive gear portion of a seedling planting claw.
FIG. 7 is an explanatory view in a vertical posture during rotation of the rotary case.
FIG. 8 is an explanatory diagram in a horizontal posture during rotation of the rotary case.
FIG. 9 is an explanatory diagram of a tilted posture while the rotary case is rotating.
FIG. 10 is a plan view of a seedling planting claw.
FIG. 11 is an explanatory diagram of a claw opening / closing mechanism.
FIG. 12 is an explanatory diagram of a drive system for a seedling planting claw.
[Explanation of symbols]
(18) Seedling planting operation (25) Seedling planting claw (48) Rotary case (49) Drive shaft (60) (61) Gear shaft (output shaft)
(62) (63) Crank arm (A) Rotary case shaft distance (B) Crank shaft distance (output shaft distance)
(C) Arm length (D) Clearance

Claims

In addition to a seedling planting device (18) for planting seedlings for one line with two hopper open-type seedling planting claws (25) having a phase difference of 180 degrees on the same locus, a central drive shaft A rotary case (48) that rotates about (49) and two output shafts (60) and (61) on both ends of the rotary case (48) can be opened and closed with a hopper open seedling planting claw (25). Two crank arms (62) and (63) to be connected to and supported by, and when the two seedling planting claws (25) are in the maximum proximity when the rotary case (48) is rotating, between these seedling planting claws (25) In order to form a gap (D) for preventing interference, the distance between the rotary case shaft (49) to the center between the central drive shaft (49) in the rotary case (48) and the two output shafts (60) (61) on both ends. A) two output shafts (60) (61) Distance and half of (B), vegetable transplanter, characterized in that greater than constituting the sum of the crank arm (62) arm length of (63) (C) (B / 2 + C).