JP3821735B2

JP3821735B2 - Vegetable transplanter

Info

Publication number: JP3821735B2
Application number: JP2002078179A
Authority: JP
Inventors: 智洋竹山
Original assignee: Yanmar Agricultural Equipment Co Ltd
Current assignee: Yanmar Agricultural Equipment Co Ltd
Priority date: 2002-03-20
Filing date: 2002-03-20
Publication date: 2006-09-13
Anticipated expiration: 2022-03-20
Also published as: JP2003274709A

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う苗取出爪と苗植付爪とによる受継方式の野菜移植機があるが、この受継方式の場合苗取出爪と苗植付爪それぞれの駆動を必要とするばかりでなく、同期させる必要があるため構造が極めて複雑化すると共に、苗取出爪より苗植付爪に苗受継時には苗姿勢に乱れを起生させ、特に高速となる程乱れを顕著なものとさせて、苗植付精度を低下させるなどの不都合があった。
【０００３】
【課題を解決するための手段】
本発明が解決しようとする課題は以上の如くであり、該課題を解決するための手段は、次の如くである。
【０００４】
請求項１においては、苗載台２１上の苗トレイ２２の苗Ｎを取出して、圃場に植付ける苗植付爪２３を設け、苗植付爪２３の支点部である連結軸４０を、略３角形状の植付基本軌跡Ｋで移動させると共に、該支点部である連結軸４０を中心として苗植付爪２３を首振りさせて苗植付爪先端を苗植付軌跡Ａで移動させるように構成したものである。
【０００５】
請求項２においては、略垂直に配置させた苗トレイ２２の苗に、下側より苗植付爪２３を近接させて苗Ｎを保持すると共に、保持後は苗植付爪２３を下方に移動させながら苗トレイ２２より離れるように構成したものである。
【０００６】
請求項３においては、苗植付爪２３の植付軌跡Ａは、圃場面近傍で前方から後方に湾曲する曲線部を形成させたものである。
【０００７】
【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は移植部の駆動説明図、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に植付クラッチケース１９を介して連結させる苗植付装置、２０は苗供給装置１６の下方に配設する左右１対の覆土輪であり、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をヘラ形苗植付爪２３でもって挾持取出し圃場の畝面Ｍに直接的に植付けて、操向ハンドル２４操作による機体１の走行中に畝面Ｍに一定間隔毎のポット苗Ｎの移植を行うように構成している。
【０００８】
また、２５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、２６は主クラッチレバー、２６ａは植付クラッチレバー、２７は走行速度を変速する主変速レバー、２８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、２９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。
【０００９】
図５に示す如く、前記苗植付爪２３は、１つの苗トレイ２２に対し２つの苗植付爪２３により苗Ｎの取出し及び植付けを行うもので、同一植付軌跡Ａ上で１８０度位相を異ならせて、１つの植付軌跡Ａ中で２回の苗取り及び苗植付けを行うように設けて、苗植付速度を略２倍に増速させて高速植付作業を行うように構成している。
【００１０】
図６乃至図１６に示す如く、前記苗植付装置１８は、２つの苗植付爪２３の左右両側で前後及び上下方向に位置を異ならせて配置させる左右ロータリケース３０・３１と左右回転アーム３２・３３とを備え、左右ロータリケース３０・３１の内側位置で左右回転アーム３２・３３の中央を左右ロータリケース３０・３１の出力軸３４にそれぞれ連結させ、左右回転アーム３２・３３間略中央に配置させる２つの首振カム３５にそれぞれ連結軸３６を介し左回転アーム３２の両端を連結固定させると共に、前記連結軸３６外周に遊嵌させる外軸３７に連結アーム３８を介し円筒形開閉カム３９を一体連結させ、右回転アーム３３の両端に連結軸４０を介し揺動アーム４１の基端をそれぞれ一体連結させ、前記開閉カム３９中央の回転自在な嵌合カム軸４２に揺動アーム４１先端を一体連結させて、図１０に示す如く、２つのカム軸４２を結ぶラインａの中央に右ロータリケース３１の出力軸３４を一致させ、該ラインａと左回転アーム３２を平行に配置させてラインａと左回転アーム３２と２つの連結アーム３８とで平行四辺形を形成し、左右ロータリケース３０・３１の出力軸３４の回転時には２つの連結アーム３８の傾斜姿勢は一定に保った状態でラインａと左回転アーム３２の姿勢のみを変形（平行四辺形を変形）させながら左右回転アーム３２・３３の回転を行って、図２２に示す如く、苗植付爪２３を首振り自在に支持させる右回転アーム３３両端の連結軸４０に略３角状の植付基本軌跡Ｋを形成させるように構成している。
【００１１】
また、前記ロータリケース３０・３１はシャーシフレーム１７の固定ブラケットなどに駆動受軸４３の取付板４４を固定させ、植付クラッチケース１９の出力軸４５にスプロケット４６・４７及びチェン４８を介し連結する植付駆動軸４９を前記受軸４３に支持させ、左右ロータリケース３０・３１内の受軸４３にサンギヤ５０を固定させ、前記出力軸３４のプラネタリギヤ５１に中間軸５２のアイドルギヤ５３を介してサンギヤ５０を連結させ、プラネタリギヤ５１とアイドルギヤ５３とを同一歯数に、サンギヤ５０とこれらギヤ５１・５３のギヤ比を３：２に形成して、ロータリケース３０・３１が一方向に１回転するとき出力軸３４を逆方向に１／２回転させるように構成している。
【００１２】さらに、右回転アーム３３両端の連結軸４０に回動自在に取付ける筒軸５４に爪受台５５の基端を固定させ、左回転アーム３２両端の連結軸３６に長孔５６を介し連結させる首振りアーム５７一端側の軸５８と爪受台５５の先端とをローラ５９を介し連結させ、爪受台５５に左右爪軸６０・６１及び左右開閉板６２・６３を介し苗植付爪２３の左右爪体６４・６５を連結させ、前記首振りカム３５の外周カム面３５ａに転接させるカムローラ６６をローラ軸６７を介して首振りアーム５７の長孔５６と軸５８間に取付け、首振りアーム５７の軸５８を中心とした他端側と前記外軸３７の固定アーム６８間に引張バネ６９を張設して、バネ６９力によりカムローラ６６を常時当接させる首振りカム３５の作用でもって苗植付爪２３に首振り動作を行わせるように構成している。
【００１３】
また、左右開閉板６２・６３は爪軸６０・６１外側の各受筒７０を介し爪受台５５に回動自在に支持させると共に、左右開閉板６２・６３及び爪軸６０・６１にそれぞれ固定する凹凸状の左右カム板７１・７２を係合連結させ、前記連結軸４０外側に左右摺動自在に嵌合させる摺動筒７３に左開閉板６２の前延出部６２ａを係合連結させ、前記開閉カム３９の円周カム溝７４に一端を係合させるカム従動部材７５を摺動筒７３に固定させ、受筒７０外側の爪受台５５と右カム板７２間に閉用捩りコイルバネ７６を設けて、開閉カム３９の作用でもって左右爪体６４・６５の開閉動作を行わせるように構成している。
【００１４】
さらに、左右爪体６４・６５の先端間にＴ字形の苗押出板７７を配置させるもので、苗押出ロッド７８先端に苗押出板７７を固定させ、前記筒軸５４に固設するロッド受け７９に苗押出ロッド７８の基端を摺動自在に支持させると共に、ロッド７８の固定バネ座８０とロッド受け７９間に圧縮バネ８１を介設して、苗取出し時に苗トレイ２２に進入する苗取出爪２３の進入力を利用してバネ８１を圧縮し、左右爪体６４・６５の開放時にはバネ８１力で爪体６４・６５に保持する苗Ｎの放出を助長させるように構成している。
【００１５】
また、前記苗植付装置１８の後部下方に左右覆土輪２０を配置させるもので、シャーシフレーム１７側に連結するブラケット８２に調節板８３及び調節ボルト８４を介し上下位置調節自在に覆土輪２０を支持させて、植付直後の苗Ｎに覆土輪２０で覆土を行うように構成している。
【００１６】
そして、ガイドローラ８５などを介し左右方向にスライド自在に支持する苗載台２１を進行方向に対し機体後部に配設させ、取出位置付近で苗トレイ２２は略垂直姿勢に保持して苗トレイ２２の開口取出側を前方に臨ませ、苗載台２１前方に配置させる苗植付装置１８の苗植付爪２３を前方より略水平に苗トレイ２２のポット内に突入させて苗Ｎの取出しを行うもので、図９、図１０、図１７乃至図２０に示す如く、左右ロータリケース３０・３１が駆動軸４９を中心として時計方向（実線矢印方向）に１回転するとき、左右回転アーム３２・３３を出力軸３４を中心として反時計方向（破線矢印方向）に１／２回転させて、前記ラインａと左回転アーム３２と２つの連結アーム３８とで形成する平行四辺形を変形させて、略３角形の植付基本軌跡Ｋで苗植付爪２３の首振り中心となる軸４０を上下運動させ、軌跡Ｋの上部及び下部付近では前記首振りカム３５によって苗植付爪２３の姿勢を上向き（略水平）及び下向き（略垂直）に変化させ、苗植付爪２３先端を略楕円形の植付軌跡Ａで上下動させて、苗トレイ２２から苗を取出してから圃場の畝面Ｍに植付けるまでの一連の植付作業を単一の苗植付爪２３で行うものである。
【００１７】
また、前記植付軌跡Ａは上部の苗取出位置及び下部の苗植付位置で後方及び下方に突出させ、苗取出位置から苗植付位置中間までの間では前方に緩やかな下り傾斜に、中間位置より苗取出位置までの間では略垂直に、苗植付位置より苗取出位置までの間では後上り傾斜に形成して、略垂直の苗トレイ２２に対し苗トレイ２２の下側より苗植付爪２３が近づいて、爪２３で苗を傷つけることなく苗Ｎを後方に抜出し、抜出した苗Ｎは爪２３の下側前方への移動によって苗トレイ２２上方の苗Ｎを乱すことなくスムーズに苗トレイ２２より離れて、苗Ｎの植付付近では苗姿勢を略垂直とさせた良好な苗Ｎの植付けを行うように構成している。
【００１８】
１つの苗植付爪２３が植付軌跡Ａの１つのループを形成させるために、左右ロータリケース３０・３１を時計方向に２回転、左右回転アーム３２・３３を反時計方向に１回転させ、左右ロータリケース３０・３１の２回転及び左右回転アーム３０・３１の逆方向の１回転によって２つの苗植付爪２３で２回の植付けが行われるもので、図１７の苗植付爪２３位置を植付軌跡Ａの０゜及び１８０゜状態とし、これより左右ロータリケース３０・３１を時計方向に９０゜回転させるとき図１８に示す如く、苗植付爪２３は軌跡Ａ上を反時計回りに移動し、０゜及び１８０゜位置より４５゜及び２２５゜位置に変化し、さらにケース３０・３１を１８０゜或いは２７０゜まで回転させるときには図１９、図２０に示す如く、苗植付爪２３は９０゜・２７０゜或いは１３５゜・３１５゜位置まで変化し、ケース３０・３１を１回転させるとき図１７の状態に戻り、ケース３０・３１の２回転によって１つの苗植付爪２３が１つの植付軌跡Ａのループを完了するものである。
【００１９】
また、前記植付軌跡Ａは圃場面付近で後方に小さく湾曲させた曲線部Ａ１を形成して、図２１に示す如く畝面Ｍ付近での動軌跡Ｂを略垂直Ｂ１状態とさせて、畝面Ｍの植付穴を小さくして苗Ｎの植付姿勢を良好とさせている。
【００２０】
ところで図７、図１３に示す如く、植付軌跡Ａ上の苗植付爪２３が苗Ｎを植付けてから元の苗取出位置までの戻り行程間で植付苗Ｎより上方位置に掃除用ブラシ８６などスクレーパ８７を配備させ、苗Ｎの取出しから植付けまで行う苗植付爪２３にあって土中突入時に爪２３に付着する泥土などを苗植付爪２３の開いた戻り行程中にブラシ８６で効果的に除去し苗取出し時に悪影響を与えるなどの不都合を防止している。なおスクレーパ８７としてブラシ８６の他、ゴム板、弾性板など何れを用いても良い。
【００２１】
上記からも明らかなように、苗載台２１の苗Ｎを取出して圃場に植付ける苗植付爪２３を設け、苗植付爪２３の支点部である連結軸４０を略３角形状の軌跡Ｋで移動させると共に、連結軸４０を中心として苗植付爪２３を首振りさせて苗植付爪２３先端を苗植付軌跡Ａで移動させたことによって、必要とする植付軌跡Ａをロータリ部材であるロータリケース３０・３１及び回転アーム３２・３３などの組合せで形成する爪駆動機構８８によって簡単に形成して、単一の苗植付爪２３で苗Ｎの取出しから苗Ｎの植付けまでの一連の植付作業を容易に可能とさせることができる。
【００２２】
また、苗載台２１の前方に苗植付爪２３を配設して、苗載台２１の前方で苗植付爪２３の苗植付運動を行わせたことによって、例えば機体前方に配置させるエンジン２と爪駆動機構８８との駆動連結構造を簡単化すると共に、苗載台２１前方の余剰空間に苗植付爪２３及び爪駆動機構８８をコンパクトに組込んで構造の簡潔化を図ることができる。
【００２３】
さらに、略垂直に配置させた苗トレイ２２の苗Ｎに下側より苗植付爪２３を近接させて苗Ｎを保持すると共に、保持後は苗植付爪２３を下方に移動させながら苗トレイ２２より離れるように設けたことによって、苗植付爪２３で苗Ｎの保持を行う際には爪２３で苗Ｎを傷つけることなく、また苗保持後にあっては上方の苗Ｎを乱すことなくスムーズに苗トレイ２２より苗Ｎを取出し可能とさせて、苗Ｎの取出し精度を向上させることができると共に、作業中の苗植付爪２３の植付軌跡Ａは圃場面近傍で前方から後方に湾曲する曲線部Ａ１を形成させたことによって、走行作業中における圃場面付近での植付軌跡（動軌跡Ｂ）を略垂直Ｂ１状態とさせて、圃場の植付穴を小さくし苗の植付姿勢を良好とさせることができる。
【００２４】
また、苗載台２１上の苗トレイ２２の苗Ｎを取出して圃場に植付ける苗植付爪２３を設け、進行方向に対し苗植付爪２３の後方に苗載台２１を配置させ、苗植付爪２３の連結軸４０を略３角形状の軌跡Ｋで移動させると共に、連結軸４０を中心として苗植付爪２３を首振りさせて苗植付爪２３先端を苗植付軌跡Ａで移動させ、苗載台２１より前方に苗Ｎを取出し下方に搬送して圃場に植付けることによって、例えば歩行形野菜移植機にあって、前方のエンジン２部と後方の苗載台２１との間に苗植付爪２３をコンパクトに組込んで、苗トレイ２１から取出した苗Ｎの直接植付けを容易に可能とさせると共に、苗トレイ２１の取出し苗Ｎより上方の苗Ｎに悪影響を与えることなく良好に苗Ｎを取出してスムーズな直接植付けを容易に可能とさせて作業の信頼性を向上させることができる。
【００２５】
さらに、苗植付爪２３を駆動する爪駆動機構８８に苗植付爪２３を開閉する爪開閉カム３９を装備させることによって、苗植付爪２３の軌跡Ｋの運動中に運動に同調した正確な爪開閉を容易に可能とさせて、爪駆動機構８８にコンパクトに組込んだ爪開閉カム３９によって苗Ｎの取出しや植付けを良好とさせることができる。
【００２６】
またさらに、苗植付爪２３の植付位置直後に覆土輪２０を配置させたことによって、植付直後の苗Ｎに速やかに覆土を行って苗植付姿勢など安定させて、植付精度を向上させることができる。
【００２７】
また、苗載台２１上の苗トレイ２２の苗Ｎを取出して圃場に植付ける苗植付爪２３を設け、苗植付爪２３を中心として左右両側に配置させるロータリケース３０・３１に回転アーム３２・３３を介して苗植付爪２３を連結させて、苗植付爪の支点部を略３角形状の軌跡Ｋで移動させると共に、支点部を中心として苗植付爪を首振りさせて苗植付爪先端を苗植付軌跡Ａで移動させたことによって、苗載台２１から苗を取出して圃場に植付けるまでの一連の植付軌跡Ａをロータリケース３０・３１と回転アーム３２・３３の組合せからなる植付爪駆動機構８８で容易に形成して、植付作業の効率向上化と植付爪駆動構造の簡略化を図ることができると共に、同一の植付軌跡Ａ上で１８０度位相を異ならせる２つの苗植付爪２３を左右のロータリケース３０・３１間に配設させたことによって、１８０度位相を異ならせる２つの苗植付爪によって植付速度を高速とさせた植付を容易に可能とさせることができる。
【００２８】
さらに、左右２つのロータリケース３０・３１は前後及び上下方向で位置を異ならせて配置させ、左右回転アーム３２・３３の中央を左右ロータリケース３０・３１にそれぞれ連結させると共に、回転アーム３２・３３の両端を連結アーム３８に平行４辺形状に連結させたことによって、ロータリケース３０・３１の回転時に回転アーム３２・３３両端の苗植付爪２３の支持部（軸４０）に略３角形状の軌跡Ｋを形成させて、回転運動するロータリケース３０・３１と位置姿勢を常に維持させる連結アーム３８とによって、必要とする植付軌跡Ａを容易に形成することができる。
【００２９】
また、ロータリケース３０・３１の一方向の２回転に対し回転アーム３２・３３を逆方向に１回転させて、１つの苗植付爪２３に対し１回の軌跡運動を行わせたことによって、ロータリケース３０・３１と回転アーム３２・３３の正逆回転の組合せで必要とする植付軌跡Ａを容易に形成して、苗載台２１から苗Ｎを取出して圃場に植付けるまでの一連の植付作業を容易に可能とさせることができると共に、回転アーム３２・３３先端に苗植付爪２３を揺動自在に取付けたことによって、ロータリケース３０・３１と回転アーム３２・３３の正逆回転及び苗植付爪２３の揺動の組合せで必要とする植付軌跡Ａを正確に形成して、作業の信頼性を向上させることができる。
【００３０】
【発明の効果】
以上実施例から明らかなように本発明は、苗載台２１上の苗トレイ２２の苗Ｎを取出して、圃場に植付ける苗植付爪２３を設け、苗植付爪２３の支点部である連結軸４０を、略３角形状の植付基本軌跡Ｋで移動させると共に、該支点部である連結軸４０を中心として苗植付爪２３を首振りさせて苗植付爪先端を苗植付軌跡Ａで移動させるように構成したものであるから、必要とする植付軌跡Ａをロータリ部材３０・３１及び回転アーム３２・３３などの組合せで形成する爪駆動機構８８によって簡単に形成して、単一の苗植付爪２３で苗Ｎの取出しから苗Ｎの植付けまでの一連の植付作業を容易に可能とさせることができるものである。
【００３１】
さらに、略垂直に配置させた苗トレイ２２の苗Ｎに下側より苗植付爪２３を近接させて苗Ｎを保持すると共に、保持後は苗植付爪２３を下方に移動させながら苗トレイ２２より離れるように構成したものであるから、苗植付爪２３で苗Ｎの保持を行う際には爪２３で苗Ｎを傷つけることなく、また苗保持後にあっては苗トレイ上方の苗Ｎを乱すことなくスムーズに苗トレイ２２より苗Ｎを取出し可能とさせて、苗Ｎの取出し精度を向上させることができるものである。
【００３２】
また、苗植付爪２３の植付軌跡Ａは圃場面近傍で前方から後方に湾曲する曲線部Ａ１を形成させたものであるから、走行作業中における圃場面付近での植付軌跡（動軌跡Ｂ）を略垂直Ｂ１状態とさせて、圃場の植付穴を小さくし苗の植付姿勢を良好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】全体側面図。
【図２】全体平面図。
【図３】移植部の駆動説明図。
【図４】移植部の平面説明図。
【図５】移植部の側面説明図。
【図６】苗植付装置の駆動説明図。
【図７】苗植付装置の側面説明図。
【図８】苗植付装置の平面説明図。
【図９】苗植付爪部の側面説明図。
【図１０】回転リンク部の説明図。
【図１１】ロータリケース部の平面説明図。
【図１２】首振りカム部の側面説明図。
【図１３】苗植付爪部の平面説明図。
【図１４】苗植付爪部の平面説明図。
【図１５】爪開閉部の説明図。
【図１６】カム板部の説明図。
【図１７】苗植付爪の０゜、１８０゜位置の説明図。
【図１８】苗植付爪の４５゜、２２５゜位置の説明図。
【図１９】苗植付爪の９０゜、２７０゜位置の説明図。
【図２０】苗植付爪の１３５゜、３１５゜位置の説明図。
【図２１】苗植付爪の動軌跡の説明図。
【図２２】苗植付爪の基本軌跡の説明図。
【符号の説明】
２１苗載台
２２苗トレイ
２３苗植付爪
４０連結軸（支点部）
Ａ植付軌跡
Ａ１曲線部
Ｋ植付基本軌跡
Ｎ苗[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]
Conventionally, a seedling removal nail and a seedling planting nail for transferring seedlings for one row by passing the seedlings taken out from the seedling tray of the seedling stand by one seedling picking nail to one seedling planting nail There is a vegetable transplanter, but in this inheritance method, not only the seedling picking nails and the seedling planting nails need to be driven, but also the structure needs to be synchronized, so the structure is extremely complicated and the seedlings are removed from the seedling picking nails. When the seedlings are handed over to the planting claws, the seedling posture is disturbed, and the disturbance becomes particularly noticeable as the speed increases, thereby reducing the seedling planting accuracy.
[0003]
[Means for Solving the Problems]
The problems to be solved by the present invention are as described above, and means for solving the problems are as follows.
[0004]
In Claim 1, the seedling N of the seedling tray 22 on the seedling placing stand 21 is taken out, and the seedling planting claw 23 to be planted in the field is provided. While moving along the triangular planting basic locus K, the seedling planting claw 23 is swung around the connecting shaft 40 which is the fulcrum portion so that the seedling planting claw tip is moved along the planting locus A. It is configured .
[0005]
In claim 2, the seedling planting claw 23 is brought close to the seedlings of the seedling tray 22 arranged substantially vertically to hold the seedling N, and after holding, the seedling planting claw 23 is moved downward. It is configured so as to be separated from the seedling tray 22 while being made .
[0006]
In Claim 3, the planting locus | trajectory A of the seedling planting nail | claw 23 forms the curved part which curves back from the front in the agricultural field vicinity .
[0007]
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 of the transplanter, FIG. 3 is an explanatory view of driving of the transplanter, FIG. 4 is an explanatory plan view of the transplanter, and 1 in FIG. The body 3 is a fixed frame that supports the body 1 on the front and rear slide frames 4 and 5 so as to be slidable left and right, 6 is a hydraulic slide cylinder that slides the body 1 via a slide arm 7, and 8 is driven from a mission case 9. Left and right rear wheels supported on the horizontal shaft 10 via a left and right transmission case 11 so as to be swingable up and down, and 12 are left and right front wheels supported on a front end side of the fixed frame 3 via an axle frame 13 so as to be swingable up and down. Is a hydraulic swing cylinder that vertically swings the front and rear wheels 12 and 8 via a swing shaft 15 on the rear end side of the fixed frame 3, and 16 is a seedling supply device that is installed behind the machine body 1 via a chassis frame 17. A seedling planting device 18 is installed between the left and right rear wheels 8 and connected to the mission case 9 via a planting clutch case 19, and 20 is a pair of left and right cover rings disposed below the seedling supply device 16. The pot seedling N for one strain is taken from the seedling tray 22 on the seedling mount 21 that reciprocates left and right of the seedling supply device 16 with the spatula-shaped seedling planting nail 23 and directly taken onto the surface M of the field. The pot seedlings N are transplanted to the heel surface M at regular intervals while the vehicle body 1 is traveling by operating the steering handle 24.
[0008]
Reference numeral 25 denotes an elevating lever for operating the swing cylinder 14 to move the airframe 1 up and down; 26, a main clutch lever; 26a, a planting clutch lever; 27, a main speed change lever for shifting the traveling speed; A slide adjustment lever 29 that adjusts the position in the left-right direction is a left-right side clutch lever that stops the drive of the left and right rear wheels 8 and turns the body 1.
[0009]
As shown in FIG. 5, the seedling planting claws 23 are used to take out and plant seedlings N by using two seedling planting claws 23 with respect to one seedling tray 22, and have a phase of 180 degrees on the same planting locus A. Is arranged so that seedlings and seedlings are planted twice in one planting locus A, and the seedling planting speed is increased by a factor of approximately two to perform high-speed planting operations. is doing.
[0010]
As shown in FIGS. 6 to 16, the seedling planting device 18 includes left and right rotary cases 30 and 31 and left and right rotary arms that are arranged at different positions in the front and rear and up and down directions on both left and right sides of the two seedling planting claws 23. 32 and 33, and the center of the left and right rotary arms 32 and 33 is connected to the output shaft 34 of the left and right rotary cases 30 and 31 at the inner position of the left and right rotary cases 30 and 31, respectively. Both ends of the left rotation arm 32 are connected and fixed to the two swing cams 35 disposed on each other via the connecting shaft 36, and the cylindrical opening and closing cam is connected to the outer shaft 37 loosely fitted on the outer periphery of the connecting shaft 36 via the connecting arm 38. 39 is integrally connected, and the base end of the swing arm 41 is integrally connected to both ends of the right rotating arm 33 via the connecting shaft 40, so that the center of the opening and closing cam 39 is rotatable. As shown in FIG. 10, the output shaft 34 of the right rotary case 31 is aligned with the center of the line a connecting the two camshafts 42, and the line a and the left The rotation arm 32 is arranged in parallel to form a parallelogram by the line a, the left rotation arm 32, and the two connection arms 38. When the output shaft 34 of the left and right rotary cases 30 and 31 is rotated, the two connection arms 38 The left and right rotating arms 32 and 33 are rotated while only the posture of the line a and the left rotating arm 32 is deformed (the parallelogram is deformed) with the tilted posture kept constant, as shown in FIG. A substantially triangular planting basic locus K is formed on the connecting shafts 40 at both ends of the right rotating arm 33 that supports the attached claw 23 so as to be swingable.
[0011]
Further, the rotary cases 30 and 31 are fixed to the fixing bracket 44 of the chassis frame 17 with the mounting plate 44 of the drive receiving shaft 43 and connected to the output shaft 45 of the planting clutch case 19 via sprockets 46 and 47 and a chain 48. The planting drive shaft 49 is supported by the receiving shaft 43, the sun gear 50 is fixed to the receiving shaft 43 in the left and right rotary cases 30, 31, and the planetary gear 51 of the output shaft 34 is connected to the planetary gear 51 via the idle gear 53 of the intermediate shaft 52. The sun gear 50 is connected, the planetary gear 51 and the idle gear 53 are formed with the same number of teeth, and the gear ratio between the sun gear 50 and these gears 51 and 53 is 3: 2, so that the rotary cases 30 and 31 rotate once in one direction. When it does, it is comprised so that the output shaft 34 may be rotated 1/2 in the reverse direction.
Further, the base end of the claw receiving base 55 is fixed to a cylindrical shaft 54 that is rotatably attached to the connecting shaft 40 at both ends of the right rotating arm 33, and the connecting shaft 36 at both ends of the left rotating arm 32 is connected through a long hole 56. The shaft 58 on one end side of the swing arm 57 to be connected and the tip of the claw receiving base 55 are connected via a roller 59, and seedling planting is carried out on the claw receiving base 55 via the left and right claw shafts 60 and 61 and the left and right opening and closing plates 62 and 63. A cam roller 66 that connects the left and right claw bodies 64 and 65 of the claw 23 and is brought into rolling contact with the outer peripheral cam surface 35a of the swing cam 35 is attached between the elongated hole 56 and the shaft 58 of the swing arm 57 via a roller shaft 67. A swing cam 35 is provided in which a tension spring 69 is stretched between the other end of the swing arm 57 centered on the shaft 58 and the fixed arm 68 of the outer shaft 37 so that the cam roller 66 is always brought into contact with the spring 69 force. With the action of the seedlings 23 It is configured so as to perform the swing operation.
[0013]
The left and right opening / closing plates 62 and 63 are rotatably supported by the claw receiving base 55 via the receiving cylinders 70 outside the claw shafts 60 and 61 and fixed to the left and right opening / closing plates 62 and 63 and the claw shafts 60 and 61, respectively. The left and right opening and closing plate 62 is engaged with and connected to a sliding cylinder 73 that is slidably fitted to the outer side of the connecting shaft 40. A cam driven member 75 having one end engaged with the circumferential cam groove 74 of the opening / closing cam 39 is fixed to the sliding cylinder 73, and a closing torsion coil spring is provided between the claw base 55 outside the receiving cylinder 70 and the right cam plate 72. 76 is provided to open and close the left and right claws 64 and 65 by the action of the opening and closing cam 39.
[0014]
Further, a T-shaped seedling extruding plate 77 is disposed between the tips of the left and right claws 64 and 65. The seedling extruding plate 77 is fixed to the tip of the seedling extruding rod 78 and fixed to the cylindrical shaft 54. The base end of the seedling extruding rod 78 is slidably supported, and a compression spring 81 is interposed between the fixed spring seat 80 of the rod 78 and the rod receiver 79, so that the seedlings that enter the seedling tray 22 when taking out the seedlings are removed. The spring 81 is compressed by using the advance input of the nail 23, and when the left and right nail bodies 64 and 65 are opened, the spring 81 force promotes the release of the seedlings N held by the nail bodies 64 and 65.
[0015]
In addition, the left and right earthen rings 20 are arranged below the rear part of the seedling planting device 18, and the earthen ring 20 is adjustable to the bracket 82 connected to the chassis frame 17 side through an adjustment plate 83 and an adjustment bolt 84 so that the vertical position can be adjusted. The seedling N immediately after planting is covered and covered with a soil covering ring 20.
[0016]
A seedling platform 21 that is slidably supported in the left-right direction via a guide roller 85 and the like is disposed at the rear of the machine body with respect to the traveling direction, and the seedling tray 22 is held in a substantially vertical posture near the take-out position. The seedling planting claw 23 of the seedling planting device 18 to be placed in front of the seedling mounting table 21 is made to enter the pot of the seedling tray 22 substantially horizontally from the front side to take out the seedling N. As shown in FIGS. 9, 10, 17 to 20, when the left and right rotary cases 30, 31 make one rotation clockwise about the drive shaft 49 (solid arrow direction), 33 is rotated halfway counterclockwise (broken arrow direction) around the output shaft 34, and the parallelogram formed by the line a, the left rotation arm 32 and the two connecting arms 38 is deformed, Almost triangular planting base The shaft 40 that is the swing center of the seedling planting claw 23 is moved up and down along the locus K, and the posture of the seedling planting claw 23 is upward (substantially horizontal) and downward by the swing cam 35 near the upper and lower portions of the locus K. (Substantially vertical), the tip of the seedling planting claw 23 is moved up and down along a substantially elliptical planting locus A, and a series of processes from taking out the seedling from the seedling tray 22 to planting it on the ridge M of the field The planting operation is performed with a single seedling planting claw 23.
[0017]
Further, the planting locus A protrudes backward and downward at the upper seedling extraction position and the lower seedling planting position, and has a moderate downward slope forward from the seedling extraction position to the middle of the seedling planting position. It is formed substantially vertically between the position and the seedling extraction position, and is inclined upward from the seedling placement position to the seedling extraction position, so that the seedling planting from the lower side of the seedling tray 22 to the substantially vertical seedling tray 22 With the nail 23 approaching, the seedling N is extracted rearward without damaging the seedling with the nail 23, and the extracted seedling N moves smoothly to the lower side of the nail 23 without disturbing the seedling N above the seedling tray 22 In the vicinity of the planting of the seedling N, apart from the seedling tray 22, the planting of the seedling N with the seedling posture being substantially vertical is performed.
[0018]
In order for one seedling planting claw 23 to form one loop of the planting locus A, the left and right rotary cases 30 and 31 are rotated clockwise twice, and the left and right rotary arms 32 and 33 are rotated counterclockwise once, Two planting claws 23 are planted by two rotations of the left and right rotary cases 30 and 31 and one rotation of the left and right rotary arms 30 and 31 in the opposite direction. Is set to 0 ° and 180 ° of the planting locus A, and when the left and right rotary cases 30 and 31 are rotated 90 ° clockwise, the seedling planting claw 23 rotates counterclockwise on the locus A as shown in FIG. When the case 30 or 31 is rotated to 180 ° or 270 °, and the case 30 or 31 is rotated to 180 ° or 270 °, as shown in FIGS. Is 90 ° It changes to the position of 70 ° or 135 ° / 315 °, and when the case 30/31 is rotated once, it returns to the state shown in FIG. This completes the loop of A.
[0019]
Further, the planting locus A forms a curved portion A1 that is slightly bent backward in the vicinity of the farm scene, and the movement locus B in the vicinity of the reed surface M is set to a substantially vertical B1 state as shown in FIG. The planting hole of the surface M is made small so that the planting posture of the seedling N is good.
[0020]
By the way, as shown in FIGS. 7 and 13, the cleaning brush is positioned above the planting seedling N during the return stroke from the time when the seedling planting claw 23 on the planting locus A plants the seedling N to the original seedling extraction position. 86 is disposed in the seedling planting claw 23 for carrying out from seedling N extraction to planting, and the mud soil and the like adhering to the claw 23 when entering the soil is brushed during the return stroke in which the seedling planting claw 23 is opened. It effectively removes and prevents inconveniences such as adverse effects when removing seedlings. In addition to the brush 86, any scraper 87 such as a rubber plate or an elastic plate may be used.
[0021]
As is clear from the above, a seedling planting claw 23 for taking out the seedling N of the seedling mount 21 and planting it in the field is provided, and the connecting shaft 40 which is a fulcrum portion of the seedling planting claw 23 is provided with a substantially triangular trajectory. The necessary planting locus A is rotated by moving the seedling planting claw 23 around the connecting shaft 40 and moving the tip of the seedling planting claw 23 along the seedling planting locus A. It is easily formed by the claw drive mechanism 88 formed by the combination of the rotary cases 30 and 31 and the rotating arms 32 and 33 as members, and from the taking out of the seedling N to the planting of the seedling N with a single seedling planting claw 23 It is possible to easily enable a series of planting operations.
[0022]
Further, by arranging the seedling planting claw 23 in front of the seedling stage 21 and causing the seedling planting claw 23 to perform the seedling planting movement in front of the seedling stage 21, it is arranged, for example, in front of the body. Simplify the drive connection structure between the engine 2 and the claw driving mechanism 88 and simplify the structure by compactly incorporating the seedling planting claw 23 and the claw driving mechanism 88 into the surplus space in front of the seedling mounting base 21. Can do.
[0023]
Further, the seedling planting nail 23 is brought close to the seedling N of the seedling tray 22 arranged substantially vertically to hold the seedling N, and after holding, the seedling tray 23 is moved while the seedling planting nail 23 is moved downward. 22 so as not to damage the seedling N with the nail 23 when holding the seedling N with the seedling planting nail 23, and without disturbing the upper seedling N after holding the seedling. The seedling N can be smoothly taken out from the seedling tray 22 to improve the taking-out accuracy of the seedling N, and the planting locus A of the seedling planting claw 23 during the operation is from the front to the rear near the farm scene. By forming the curved portion A1 that is curved, the planting trajectory (movement trajectory B) in the vicinity of the farm scene during the running operation is set to a substantially vertical B1 state, the planting hole in the farm field is made smaller, and the seedling is planted. The posture can be made good.
[0024]
In addition, a seedling planting claw 23 for taking out the seedling N from the seedling tray 22 on the seedling platform 21 and planting it in the field is provided, and the seedling platform 21 is arranged behind the seedling planting claw 23 in the traveling direction. The connecting shaft 40 of the planting claw 23 is moved along a substantially triangular locus K, and the seedling planting claw 23 is swung around the coupling shaft 40 so that the tip of the seedling planting claw 23 is moved along the seedling planting locus A. It is moved, the seedling N is taken out forward from the seedling stage 21, transported downward, and planted in the field. For example, in a walk-type vegetable transplanter, the front engine 2 part and the rear seedling stage 21 Incorporate the seedling planting claws 23 in a compact manner to enable direct planting of the seedling N taken out from the seedling tray 21 and to adversely affect the seedling N above the taken out seedling N in the seedling tray 21 The seedlings N can be taken out well and smooth direct planting can be done easily. It is possible to improve the reliability of the work.
[0025]
Furthermore, the claw drive mechanism 88 that drives the seedling planting claw 23 is equipped with a claw opening / closing cam 39 that opens and closes the seedling planting claw 23, so that it can be accurately synchronized with the movement during the movement of the locus K of the seedling planting claw 23. It is possible to easily open and close the nail, and the nail opening and closing cam 39 incorporated in the nail driving mechanism 88 in a compact manner can improve the removal and planting of the seedling N.
[0026]
Furthermore, by placing the covering ring 20 immediately after the planting position of the seedling planting claw 23, the seedling N immediately after planting is immediately covered with soil to stabilize the seedling planting posture, etc. Can be improved.
[0027]
Further, a seedling planting claw 23 for taking out the seedling N from the seedling tray 22 on the seedling mount 21 and planting it in the field is provided, and rotary arms 30 and 31 are arranged on the left and right sides with the seedling planting claw 23 as the center. The seedling planting claws 23 are connected via 32 and 33, and the fulcrum part of the seedling planting nails is moved along the locus K having a substantially triangular shape, and the seedling planting nails are swung around the fulcrum part. By moving the tip of the seedling planting claw along the seedling planting locus A, a series of planting locus A from the seedling placement stand 21 to planting it on the field is transferred to the rotary cases 30 and 31 and the rotary arm 32. It can be easily formed by the planting claw drive mechanism 88 composed of 33 combinations to improve the efficiency of the planting operation and simplify the planting claw drive structure, and 180 on the same planting locus A. The two seedling planting claws 23 with different degrees of phase By was disposed between the scan 30, 31 may be capable of planting that the speed planting is a high speed by two seedling planting claw to vary the phase by 180 degrees easily.
[0028]
Further, the left and right rotary cases 30 and 31 are arranged at different positions in the front and rear and vertical directions, and the centers of the left and right rotary arms 32 and 33 are connected to the left and right rotary cases 30 and 31, respectively. By connecting the both ends of the arm to the connecting arm 38 in a parallel quadrilateral shape, the support portions (shafts 40) of the seedling planting claws 23 at both ends of the rotary arms 32 and 33 are substantially triangular when the rotary cases 30 and 31 are rotated. The required planting locus A can be easily formed by the rotary cases 30 and 31 that rotate and the connecting arm 38 that always maintains the position and orientation.
[0029]
In addition, by rotating the rotary arms 32 and 33 once in the opposite direction with respect to two rotations in one direction of the rotary cases 30 and 31, one trajectory movement is performed on one seedling planting claw 23, The planting locus A required by the combination of forward and reverse rotation of the rotary cases 30 and 31 and the rotary arms 32 and 33 is easily formed, and a series of operations from taking the seedling N out of the seedling stage 21 to planting it on the field The planting operation can be easily performed, and the seedling planting claws 23 are swingably attached to the tips of the rotary arms 32 and 33, so that the rotary cases 30 and 31 and the rotary arms 32 and 33 can be moved forward and backward. The planting locus A required by the combination of rotation and swinging of the seedling planting claw 23 can be accurately formed, and the reliability of the work can be improved.
[0030]
【The invention's effect】
As is apparent from the above embodiments, the present invention provides a seedling planting claw 23 for taking out the seedling N of the seedling tray 22 on the seedling mount 21 and planting it in the field, which is a fulcrum portion of the seedling planting claw 23. The connecting shaft 40 is moved along a substantially triangular planting basic locus K, and the seedling planting claw 23 is swung around the connecting shaft 40 that is the fulcrum to plant the seedling planting claw tip. Since it is configured to move along the locus A, the necessary planting locus A can be easily formed by the claw drive mechanism 88 formed by a combination of the rotary members 30, 31 and the rotary arms 32, 33, etc. A single seedling planting claw 23 can easily make a series of planting operations from taking out the seedling N to planting the seedling N.
[0031]
Further, the seedling planting nail 23 is brought close to the seedling N of the seedling tray 22 arranged substantially vertically to hold the seedling N, and after holding, the seedling tray 23 is moved while the seedling planting nail 23 is moved downward. since those configured away from 22, without damaging the seedling N nail 23 when performing holding seedlings N seedlings planting claw 23, also there after seedling holding seedling tray above the seedling N The seedling N can be taken out from the seedling tray 22 smoothly without disturbing the seedling, and the taking-out accuracy of the seedling N can be improved.
[0032]
Further, the planting locus A of the seedling planting claw 23 forms a curved portion A1 that curves from the front to the rear in the vicinity of the farm scene, so that the planting locus (moving trajectory) in the vicinity of the farm scene during the traveling work is formed. B) is set to a substantially vertical B1 state, and the planting hole in the field can be made small to improve the seedling planting posture.
[Brief description of the drawings]
FIG. 1 is an overall side view.
FIG. 2 is an overall plan view.
FIG. 3 is an explanatory diagram of driving of the transplanted part.
FIG. 4 is an explanatory plan view of a transplanted part.
FIG. 5 is an explanatory side view of the transplanted part.
FIG. 6 is a driving explanatory view of the seedling planting device.
FIG. 7 is an explanatory side view of a seedling planting apparatus.
FIG. 8 is an explanatory plan view of a seedling planting apparatus.
FIG. 9 is an explanatory side view of a seedling planting claw.
FIG. 10 is an explanatory diagram of a rotary link unit.
FIG. 11 is an explanatory plan view of a rotary case part.
FIG. 12 is an explanatory side view of a swing cam portion.
FIG. 13 is a plan view of a seedling planting claw.
FIG. 14 is a plan view of a seedling planting claw.
FIG. 15 is an explanatory diagram of a claw opening / closing part.
FIG. 16 is an explanatory diagram of a cam plate portion.
FIG. 17 is an explanatory view of 0 ° and 180 ° positions of a seedling planting claw.
FIG. 18 is an explanatory view of 45 ° and 225 ° positions of a seedling claw.
FIG. 19 is an explanatory view of 90 ° and 270 ° positions of the seedling claw.
FIG. 20 is an explanatory view of 135 ° and 315 ° positions of a seedling planting claw.
FIG. 21 is an explanatory diagram of a movement locus of a seedling planting claw.
FIG. 22 is an explanatory diagram of a basic trajectory of a seedling planting nail.
[Explanation of symbols]
21 Seedling stand 22 Seedling tray 23 Seedling claw 40 Connecting shaft (fulcrum)
A Planting locus A1 Curved section K Planting basic locus N Seedling

Claims

A seedling planting claw 23 for taking out the seedling N of the seedling tray 22 on the seedling mount 21 and planting it in the field is provided, and the connecting shaft 40 that is a fulcrum portion of the seedling planting claw 23 is planted in a substantially triangular shape. is moved in the base locus K, characterized by being configured to the seedling planting claw 23 by swinging seedling planting Tsuketsume tip around the connecting shaft 40 is a fulcrum portion to move in a seedling planting locus a A vegetable transplanter.

The seedling planting nail 23 is brought close to the seedlings in the seedling tray 22 arranged substantially vertically to hold the seedling N, and after holding, from the seedling tray 22 while the seedling planting nail 23 is moved downward. The vegetable transplanter according to claim 1, wherein the vegetable transplanter is configured to be separated .

The vegetable transplanting machine according to claim 1, wherein the planting locus A of the seedling planting claw 23 forms a curved portion that curves from the front to the back in the vicinity of the farm scene .