JP3758283B2

JP3758283B2 - Seedling planting machine

Info

Publication number: JP3758283B2
Application number: JP05890397A
Authority: JP
Inventors: 伸渡部; 村並　　昌実
Original assignee: Iseki and Co Ltd
Current assignee: Iseki and Co Ltd
Priority date: 1997-03-13
Filing date: 1997-03-13
Publication date: 2006-03-22
Anticipated expiration: 2017-03-13
Also published as: JPH10248321A

Description

【０００１】
【産業上の利用分野】
この発明は、苗の植付けを行なう苗植機に関するものである。
【０００２】
【従来技術とその課題】
この種の従来技術としては、苗取り装置にて苗載台から取り出された苗を作孔器に受け取って、該作孔器が圃場に突入して開いて苗を植付ける苗植機があるが、苗取り装置にて苗載台から苗を取り出す時に、作孔器が閉じた状態でその下方にあると苗を取り出す時にこぼれた土が作孔器に溜って内壁に付着してしまって、苗の植付け姿勢が乱れるという問題があった。
【０００３】
【課題を解決するための手段】
この発明は、前記の従来技術のもつ課題を解決すべく、閉じた状態で下降して圃場に突入した後に開いて上昇して苗植付け孔を圃場に形成する開閉自在の作孔器６８と苗載台３１に載置された苗を取出して作孔器６８内にその取出した苗が填まり込むように作動する苗取り装置４５とを装備した苗植機において、作孔器６８は、その昇降軌跡Ｐ３の下端位置Ｐ０から上昇後に下降に転じた下降軌跡部分の上側で圃場に突入する前の閉じ位置Ｓ１まで開いた状態となり、その昇降軌跡Ｐ３上側の閉じ位置Ｓ１から昇降軌跡Ｐ３の下端位置Ｐ０まで閉じた状態となるように設け、且つ、作孔器６８が開いた状態で昇降軌跡Ｐ３の下端位置Ｐ０から昇降軌跡Ｐ３上側の閉じ位置Ｓ１まで上昇するときに苗取り装置４５が苗載台３１に載置された苗を取出す位置Ｓ２の下方を通過するように設定し、作孔器６８が圃場に突入する前に閉じる前記閉じ位置Ｓ１を苗取り装置４５が苗載台３１に載置された苗を取出す位置Ｓ２の下方から外れた前方位置に設定したことを特徴とする苗植機としたものである。
【０００４】
【発明の作用効果】
この発明によると、作孔器６８が圃場に突入する前に閉じる位置Ｓ１を該作孔器６８の昇降軌跡Ｐ３の下端位置Ｐ０から上昇後に下降に転じた下降軌跡部分の上側で圃場に突入する前の位置で、且つ苗取り装置４５が苗載台３１に載置された苗を取出す位置Ｓ２の下方から外れた前方位置に設定したから、苗取り装置４５が苗載台３１に載置された苗を取出すときこぼれ落ちる土が作孔器６８内に溜って付着することが回避され、従来の課題を解消して良好な苗の植付け作業が行える。
【０００５】
【実施例】
この発明の一実施例である歩行型野菜苗植機を図面に基づき詳細に説明する。１はミッションケ−スで、その左右両側には左右車輪駆動軸２・２の回りに回動自在に左右車輪伝動ケース３・３の前部が装着されている。そして、左右車輪伝動ケース３・３の後端部には各々左右駆動車輪４・４が軸架されている。
【０００６】
５はエンジンであって、ミッションケ−ス１の前部に設けたエンジンベース６上に搭載されており、クラッチケース７を介してミッションケ−ス１に動力に動力を伝えるように設けられている。８・８は左右前輪であって、エンジンベース６の前部に設けた支持アーム９の下端の支持軸１０に回動自在に設けた左右前輪支持アーム１１・１１に回転自在に軸架されている。そして、左右前輪支持アーム１１・１１の各々の上端部には上方に向けて左右前部アーム１２・１２が設けられており、前記左右車輪伝動ケース３・３の各々の上端部に上方に向けて設けた左右後部アーム１３・１３と各々が左右連結ロッド１４・１４で連結されている。従って、左前輪支持アーム１１と左車輪伝動ケース３及び右前輪支持アーム１１と右車輪伝動ケース３が各々共に回動する構成となっており、左駆動車輪４と左前輪８とが共に上下動し、且つ、右駆動車輪４と右前輪８とが共に上下動する構成となっている。
【０００７】
１５は油圧装置であって、車輪上下用の油圧シリンダー１６と左右車輪の相対高さを変更するローリング油圧シリンダー１７と上下用油圧バルブ及びローリング用油圧バルブを内装する油圧ポンプ１８等より構成されており、ミッションケ−ス１上に固定されている。そして、車輪上下用の油圧シリンダー１６の油圧ピストン１９は、イ−ロ方向に出退自在に装架されており、その先端部にはクランク状の天秤装置２０が装着されている。
【０００８】
この天秤装置２０は、油圧ピストン１９の先端部に設けられた筒状部材２１に嵌入した状態で支持された機体左右方向の回動軸２２の左右端部に約１８０度の位相差で突出する左右アーム２３・２３を固設して構成されている。そして、この天秤装置２０の左右アーム２３・２３の各々の先端部と前記左右車輪伝動ケース３・３に設けた左右後部アーム１３・１３とを左右連結ロッド２４・２４にて連結している。一方、回動軸２２には別に上方に突出した駆動アーム２５を設け、この駆動アーム２５の上端部を前記ローリング油圧シリンダー１７の油圧ピストン２６先端部に連結している。このローリング油圧シリンダー１７の油圧ピストン２６もイ−ロ方向に出退動する。
【０００９】
然して、車輪上下用の油圧シリンダー１６の油圧ピストン１９のイ−ロ方向の出退動により左右駆動車輪４・４及び左右前輪８・８が同量だけ上下動するように構成されていると共に、ローリング油圧シリンダー１７の油圧ピストン２６のイ−ロ方向の出退動により左駆動車輪４・左前輪８と右駆動車輪４・右前輪８とが背反的に上下動するように構成されている。
【００１０】
２７は畝Ａの上面を検出するセンサーであって、その下部が畝Ａの上面のマルチフィルムＢに接触して上下動しその上部が上下用油圧バルブに連携されており、苗植付深さＨが常に一定になるように畝Ａの上面を検出して上下用油圧バルブを切り換えて油圧ピストン１９をイ−ロ方向に出退動させて左右駆動車輪４・４及び左右前輪８・８を上下動させるように構成している。
【００１１】
２８は機体の左右傾斜を検出する水平センサーであって、その下部に機体の左右傾斜にて左右揺動する錘が形成されその上部がローリング用油圧バルブに連携されており、機体が左右方向で水平になるようにローリング用油圧バルブを切り換えて油圧ピストン２６をイ−ロ方向に出退動させて左駆動車輪４・左前輪８と右駆動車輪４・右前輪８とを背反的に上下動させるように構成している。
【００１２】
ミッションケ−ス１の後壁面の上部左側には、伝動軸ケース２９の前端が固定されている。また、ミッションケ−ス１の後壁面の上部右側には、伝動軸ケース２９と並行に筒状フレームの前端が固定され、この筒状フレームの後端と伝動軸ケース２９の後端とを後部フレーム３０にて連結固定し、ミッションケ−ス１と筒状フレームと伝動軸ケース２９と後部フレーム３０とで平面視矩形状の枠組みフレームが構成されている。
【００１３】
３１は苗載台で、左右の立設枠３２・３２と前後の底板３３・３４とでできた枠組みの底板空間部に前後方向に巻きかけられて張設される苗移送ベルト３５を設けた構造になっている。そして、苗移送ベルト３５は、苗載台３１が左右両端に至ったときに一定量だけ回動すべく、前記伝動軸ケース２９の中途部から動力を分岐して取り出す苗載台駆動ケース３６より延出した駆動軸に固着された駆動カムにて駆動される従動カムを有する適宜間欠駆動機構を介して駆動される。然して、苗移送ベルト３５は、苗載台３１が左右端に移動したときに一定量（１株の苗巾だけ）回動し、苗載台３１上に載置された苗を下記の苗受枠３７に向けて移送するように構成されている。
【００１４】
苗受枠３７は、前記苗載台３１の後端側にあって、筒状フレームと伝動軸ケース２９に下部が取付けられた苗載台前部を支持する前部支持体３８の上部に設けられており、左右中央部には苗取出口３９が設けられている。４０…は杆体よりなる苗受杆であって、苗受枠３７の上方部の苗載台３１の左右立設枠３２・３２間に横架された取付板４１に当間隔に固設され櫛歯状に下端が開放されており、この苗受杆４０…の各々が野菜苗の一株毎のポット容器ａ後側を支持するように設けられている。また、取付板４１には比較的に軟らかいナイロン製のブラシ４０ａ…の上部が取付けられており、苗の茎や葉が苗受杆４０…から後方に出るのを防止している。
【００１５】
尚、後述の苗植固定爪４７と苗植可動爪４８とは、この苗受杆４０を間に挾むようにして苗載台３１に突入して一株の苗（一株のポット容器ａ）を分割保持するように作動する。４２は苗載台３１の前部支持ロ−ラを示し、苗載台３１はその前部下面に固定されたレ−ル４３がこの前部支持ロ−ラ４２に乗った状態にて、苗載台駆動ケース３６にて伝動され回転する螺旋軸と該螺旋軸の螺旋溝に係合して左右動し苗載台３１の底面に連結された摺動カムとにより構成される一般的な左右駆動機構により駆動されて左右横往復移動する。
【００１６】
４４はループ状のハンドルであって、その左右下端部が各々筒状フレームと伝動軸ケース２９に固設されている。４５は苗取り装置としての移植装置で、内部が中空になった箱状の移植具本体４６に、苗植固定爪４７と苗植可動爪４８との２つの鉄板製の苗植爪と苗押し具４９を装着し、苗植具本体４６の内部に前記苗植可動爪４８の作動機構を設け、苗を挾持したり逆に挾持している苗を開放したりする作動が行われるようにしている。そして、苗押し具４９は苗植爪４７・４８が挾持している苗を離した瞬間より苗植爪４７・４８が上動する速さと同じ速さで下動するように構成されており、苗が苗植爪４７・４８から離されようになっている。尚、４６ａは、移植具本体４６の上部蓋である。
【００１７】
そして、伝動軸ケース２９にて伝達された動力で駆動される駆動軸５０にて回転する駆動回転クランク５１の先端部にて移植装置４５の本体４６の中途部を枢着し、後部フレーム３０より下方に延設した揺動クランク支持アーム５２の下端部に基部が枢着された揺動クランク５３の先端部を移植装置４５の本体４６の一端部に枢着して、駆動回転クランク５１の回転にて移植装置４５の苗植爪４７・４８の先端が描く軌跡Ｐ１が前後方向に狭くて上下方向に長い閉ル−プ状になるように構成している。
【００１８】
５４は苗を植付ける位置のマルチフィルムＢに孔を開ける開孔装置であって、本体５５の下端部に電気ヒーターにて加熱されてマルチフィルムＢを熔かして丸い孔を開ける加熱体５６が設けられており、機体に上部が固定された支持体５７に基部が支持軸５８・５８にて枢着された上部リンク５９と下部リンク６０との先端部に本体５５が支持軸６１・６１にて枢着されている。尚、６２は上部リンク５９に軸６３にて回転自在に枢着した従動回転体である。
【００１９】
６４は駆動カムであって、伝動軸ケース２９の中途部の下部から動力を分岐して取り出す伝動ケース６５に設けた駆動軸６６によりハ方向に回転する。そして、前記上部リンク５９に枢着した従動回転体６２が駆動カム６４に接当するように、本体５５は引っ張りバネ６７にて下方に向けて付勢されており、駆動カム６４のハ方向に回転により、従動回転体６２が駆動カム６４の段部６４ａを通過する時に加熱体５６の下端は軌跡Ｐ２を描いて下動し、その後駆動カム６４の回転に伴い軌跡Ｐ２を描いて上動する。従って、加熱体５６の下端が軌跡Ｐ２を描いて下動した位置でマルチフィルムＢに孔が開けられる。
【００２０】
６８は苗植付け孔を畦Ａ上面に開ける作孔器であって、機体に上部が固定された前記支持体５７に上部が枢支軸６９・６９にて枢着された平行リンク７０の下部に側面視Ｌ型の連結板７１を枢支軸７２・７２にて枢着して設け、更に、該連結板７１に前部が枢支軸７３・７３にて枢着された平行リンク７４の後部に枢支軸７５・７５にて枢着して設けられている。
【００２１】
７６は前記伝動ケース６５に設けた駆動軸６６に基部が固定された回転クランクであって、その先端が平行リンク７４の中途部に設けたアーム７７に枢着されている。併して、回転クランク７６がハ方向に回転すると、作孔器６８の下端（作孔器６８が閉じた状態で作動した場合の作孔器６８下端の仮想軌跡）は軌跡Ｐ３を描いて作動し、畦Ａ上面に苗植付け孔を開ける。
【００２２】
そして、作孔器６８は、前記平行リンク７４の後部に枢支軸７５・７５にて枢着支持された円筒状体７８の下部に嘴状の前後開閉体７９・７９が枢支軸８０・８０にて前後方向に開閉自在に支持されており、嘴状の前開閉体７９に設けたアーム８１先端の枢支軸８２と機体に上部が固定された前記支持体５７の下端部に枢支軸８３に回動自在に設けられた揺動アーム８４の先端部の枢支軸８５との間を連結ロッド８６にて連結している。８７は揺動アーム８４の先端に突出して設けた係止ピンであって、前記連結ロッド８６の下面に接当して揺動アーム８４と連結ロッド８６とが直線状になったときの最大長さを制限するものである。一方、前開閉体７９に設けた係止ピン８８が後開閉体７９の溝８９に係合しており、揺動アーム８４と連結ロッド８６とにより前開閉体７９が開閉動作するのに同期して後開閉体７９も開閉動作する。尚、円筒状体７８の後部側には、苗植付け時に苗植爪４７・４８及び苗押し具４９が介入できるように切欠き７８ａが設けられている。
【００２３】
従って、回転クランク７６がハ方向に回転すると作孔器６８は上下作動するが、その嘴状の前後開閉体７９・７９が図２の開いた状態から軌跡Ｐ３のＳ１位置で連結ロッド８６にて押されて閉じ、軌跡Ｐ３のＰＯ位置で連結ロッド８６にて引っ張られて開く。即ち、軌跡Ｐ３のＳ１位置からＰＯ位置までは前後開閉体７９・７９は閉じており、ＰＯ位置からＳ１位置までは前後開閉体７９・７９は開いた状態となっている。そして、この作孔器６８が閉じる位置Ｓ１を移植装置４５が苗載台３１に載置された苗を取出す位置Ｓ２の下方から外れた前方位置に設定している。尚、連結ロッド８６にはターンバックル８６ａが設けられて長さ調節ができるようになっており、嘴状の前後開閉体７９・７９の開閉タイミングを調節できるようになっている。また、前開閉体７９には上方に向けて突出された板体８１ａにナット８１ｂが固着され、該ナット８１ｂにボルト８１ｃが通されて固定ボルト８１ｄにて位置決めされており、該ボルト８１ｃの板体８１ａからの突出量Ｌが調節できる構成となっている。このボルト８１ｃの先端が円筒状体７８の外壁面に当接することにより嘴状の前後開閉体７９・７９の最大開き量が決定される構成になっているので、上記ボルト８１ｃの突出量Ｌの調節にて嘴状の前後開閉体７９・７９の開き量が調節できる。
【００２４】
９０・９０は畝Ａ上面に植付けた苗の左右両側より苗に土を寄せて苗植付孔を埋め苗を畝Ａに確実に植付ける左右土寄せ装置であって、円錐台状の左右転動輪により構成されている。９１・９１は、各々左右駆動車輪４・４の左右サイドクラッチを入切操作する一般的な左右サイドクラッチレバーである。
【００２５】
９２は、苗載台３１，移植装置４５，開孔装置５４，及び作孔器６８を作動させたり停止させたりする植付クラッチレバーである。９３は油圧レバーであって、連結ワイヤを介して上下用油圧バルブに連携されており、センサー２７の畝Ａ上面部の検出により左右駆動車輪４・４及び左右前輪８・８が自動的に上下動調節される自動制御位置と左右駆動車輪４・及び左右前輪８・８を強制的に下動せしめる機体リフト位置とに切換操作できるように構成されている。
【００２６】
９４は主クラッチレバーであって、クラッチケース７内の主クラッチを操作してエンジン５からの動力を断続するものである。９５はハンドル４４に基部が固定された予備苗載台である。尚、ここで移植装置４５の苗植可動爪４８と苗押し具４９の作動機構を説明する。
【００２７】
１００は駆動軸５０に基部が固定されて回転する駆動回転クランク５１の先端部にキー１０１にて係合された従動カム軸であって、移植具本体４６内にベアリング１０２・１０２にて回転自在に設けられている。１０３は苗植可動爪４８の駆動カムであって、キー１０４にて従動カム軸１００と一体に回転するように構成されている。
【００２８】
１０５は外筒体１０６と内軸１０７とにより構成される連動体であって、その内軸１０７の先端が駆動カム１０３のカム面に当接している。そして、内軸１０７の中途部が移植具本体４６に設けられた案内部１０８に支持され、外筒体１０６が移植具本体４６に支持されて、連動体１０５全体が矢印ニ−ホ方向に往復動できるように設けられている。一方、内軸１０７に形成された雄螺子１０９が、外筒体１０６に形成された雌螺子１１０に螺着されていると共に、内軸１０７の雄螺子１０９が外筒体１０６より突出した部位をナット１１１で締めて、内軸１０７と外筒体１０６とを一体に作動するように固定している。
【００２９】
１１２は移植具本体４６に矢印ヘ−ト方向に往復回転自在に設けられた回転軸であって、移植具本体４６の内部から外部にまで貫通して設けられている。そして、その外部には、苗植可動爪４８の基部が固定されており、回転軸１１２のト方向の回転で苗植可動爪４８が矢印チ方向に開き、回転軸１１２のへ方向の回転で苗植可動爪４８が矢印リ方向に閉じるように構成されている。
【００３０】
１１３は移植具本体４６の内部にて回転軸１１２に固定された揺動アームであって、その先端が連動体１０５の外筒体１０６の先端側に形成された凹状部１１４に係合している。１１５は移植具本体４６の内部壁と連動体１０５の外筒体１０６と間に設けられた圧縮バネであって、連動体１０５の先端が常に駆動カム１０３のカム面に接するように矢印ホ方向に付勢している。
【００３１】
１１６は連動体１０５の外筒体１０６の外側端部に設けた６角状部であって、ナット１１１を弛めて該６角状部１１６を掴んで回すと、外筒体１０６に形成された雌螺子１１０に螺着されている内軸１０７の雄螺子１０９により、内軸１０７のみが矢印ニ−ホ方向に移動して、内軸１０７の外筒体１０６先端部から突出している長さＷが変更されるので、苗植可動爪４８の最も閉じた時の巾Ｘを変更調節することができる。そして、調節後は、６角状部１１６をスパナで掴んだ状態でナット１１１を締めて内軸１０７と外筒体１０６とを一体に作動するように固定する。
【００３２】
１１７は苗押し具４９の駆動カムであって、キー１０４にて従動カム軸１００と一体に回転するように構成されている。１１８は移植具本体４６に支架された支持軸１１９に枢支された揺動連動体であって、その一端１２０が駆動カム１１７のカム面に当接し、他端１２１がＵ字状に形成されて苗押し具４９が先端に取付けられた往復動軸１２２に係合している。尚、揺動連動体１１８の一端１２０部側に設けられた凸部１２３と移植具本体４６に螺子にて固着されている上部蓋４６ａの内壁面との間には圧縮バネが設けられており、揺動連動体１１８の一端１２０が常に駆動カム１１７のカム面に当接するように付勢している。然して、揺動連動体１１８の一端１２０が駆動カム１１７のカム面の凸部にて押し上げられと、揺動連動体１１８は支持軸１１９回りに揺動してその他端１２１が下動するので、苗押し具４９も下動する。逆に、揺動連動体１１８の一端１２０が駆動カム１１７のカム面の凸部から外れると、揺動連動体１１８は圧縮バネの付勢力にて支持軸１１９回りに逆揺動してその他端１２１が上動するので、苗押し具４９も上動する。
【００３３】
上記の構成により、伝動軸ケース２９にて伝達された動力で駆動軸５０が駆動回転されると、駆動回転クランク５１の先端部の従動カム軸にて移植装置４５の本体４６の中途部が枢着され、後部フレーム３０より下方に延設した揺動クランク支持アーム５２の下端部に基部が枢着された揺動クランク５３の先端部にて移植装置４５の本体４６の一端部が枢着されているので、駆動回転クランク５１の回転にて移植装置４５の苗植爪４７・４８の先端が描く軌跡Ｐ１が前後方向に狭くて上下方向に長い閉ル−プ状になる。そして、その軌跡Ｐ１中で、苗植固定爪４７と苗植可動爪４８とが苗取出口３９に突入する寸前には、苗植可動爪４８は開いた状態で且つ苗押し具４９は上動した状態になっており、突入後両爪４７・４８が苗の両側に来たときに苗植可動爪４８が閉じて苗を掴み取り、その後、両爪４７・４８が苗を掴んだまま下動して、作孔器６８が畦Ａ上面に苗植付け孔を開けた状態の時に作孔器６８の円筒状体７８内部に介入して、苗植可動爪４８が開くと共に苗押し具４９が下動して苗を植付ける。
【００３４】
次に、上記の歩行型野菜苗植機にて苗植付作業を行う場合を説明すると、苗植機の左右駆動車輪４・４及び左右前輪８・８がマルチフィルムＢを張設した圃場の畝Ａを跨ぐように機体をセットし、苗載台３１に縦・横にポット容器ａが所定の間隔で連設されている紙製の育苗器で育生されたポット状の野菜苗を載置収容した後、エンジン５を始動して主クラッチレバー９４を操作して機体を前進させる。
【００３５】
このとき、植付クラッチレバー９２を操作して、苗載台３１・移植装置４５・開孔装置５４・及び作孔器６８を作動させ、且つ、油圧レバー９３を自動制御位置に操作すると、苗載台３１は左右駆動機構を介して左右方向に往復揺動されるので、その後端側に位置する苗の先端部の底面及び先端側は各々苗受枠３７と苗受杆４０…とに受けられた状態で左右に移動され、苗取出口３９に苗が繰り出され、苗植軌跡Ｐ１を描く移植装置４５の苗植爪４７・４８により順次掴み取られる。一方、加熱された開孔装置５０は、マルチフィルムＢの苗植付位置に孔を開けながら、畝Ａ上面に苗植付孔を形成する。また、センサー２７の畝Ａ上面部の検出により、左右駆動車輪４・４及び左右前輪８・８が自動的に上下動調節され苗は常に畝Ａに所定の植付深さＨにて植付けられるので、作孔器６８が畦Ａ上面に苗植付け孔を開けた状態の時に苗植爪４７・４８が作孔器６８の円筒状体７８内部に介入して、苗植可動爪４８が開くと共に苗押し具４９が下動して苗を植付ける。その後、左右土寄せ装置９０・９０にて植付けた苗の左右両側より土を寄せて苗植付孔を埋め、苗は畝Ａに確実に植付けられる。
【００３６】
一方、移植装置４５の外側にあるナット１１１を弛めて該６角状部１１６を掴んで回すことにより、苗植固定爪４７と苗植可動爪４８の最も閉じた時の巾Ｘを変更調節することができるので、一株の苗の大きさ（一株のポット容器ａの大きさ）や苗の根の状態や苗床土の質に応じて、非常に容易に苗植固定爪４７と苗植可動爪４８の巾調節が行える。また、苗植固定爪４７と苗植可動爪４８の最も閉じた時の巾Ｘを変更調節すると、同時に最も開いた状態の巾も調節される。即ち、最も閉じた時の巾Ｘを狭くすると最も開いた時の巾も狭くなり、最も閉じた時の巾Ｘを広くすると最も開いた時の巾も広くなる。
【００３７】
そして、特に、作孔器６８が圃場に突入する前に閉じる位置Ｓ１を苗取り装置４５が苗載台３１に載置された苗を取出す位置Ｓ２の下方から外れた位置に設定したから、苗取り装置４５が苗載台３１に載置された苗を取出すときこぼれ落ちる土が作孔器６８内に溜って付着することが回避され、良好な苗の植付け作業が行える。
【図面の簡単な説明】
【図１】歩行型野菜苗植機の全体側面図である。
【図２】作孔器６８の作用説明側面図である。
【図３】開孔装置５４の作用説明側面図である。
【図４】作孔器６８内に移植装置４５が苗を放出した瞬間の作動説明側面図である。
【図５】移植装置４５の上部蓋４６ａを開けた状態の一部断面平面図である。
【図６】移植装置４５の作動説明図である。
【図７】作孔器６８の軌跡Ｐ３に対する移植装置４５の作動説明側面図である。
【図８】苗受枠３７の苗取出口３９付近の拡大背面図である。
【符号の説明】
３１苗載台
４５苗取り装置（移植装置）
６８作孔器
Ｓ１作孔器６８が閉じる位置
Ｓ２移植装置４５が苗を取出す位置
Ｐ０昇降軌跡の下端位置
Ｐ３昇降軌跡[0001]
[Industrial application fields]
The present invention relates to a seedling planting machine for planting seedlings.
[0002]
[Prior art and its problems]
As this type of conventional technology, there is a seedling planting machine that receives seedlings taken out from a seedling stand by a seedling collecting device into a hole making device, and enters the field to open the hole making device and plant seedlings. However, when taking out the seedlings from the seedling stand with the seedling removal device, if the borer is in the closed state, the soil spilled when the seedlings are taken out accumulates on the borer and adheres to the inner wall. There was a problem that the planting posture of seedlings was disturbed.
[0003]
[Means for Solving the Problems]
In order to solve the above-described problems of the prior art, the present invention is an openable / closable hole producing device 68 for forming a seedling planting hole in a field by opening and ascending after entering the field by descending in a closed state and a seedling In the seedling transplanter equipped with a seedling removing device 45 that operates to take out the seedling placed on the stage 31 and fill the extracted seedling into the hole making device 68, From the lower end position P0 of the ascending / descending trajectory P3, it is opened to the closing position S1 before entering the field on the upper side of the descending trajectory portion that has turned downward after the ascent, and the lower end of the ascending / descending locus P3 from the closing position S1 above the ascending / descending locus P3. The seedling removing device 45 is provided so as to be closed to the position P0, and the seedling removal device 45 is raised when the hole producing device 68 is opened to the closing position S1 above the lifting locus P3 from the lower end position P0 of the lifting locus P3. Seedlings placed on the platform 31 It is set so as to pass under the position S2 to be taken out, and the closed position S1 that is closed before the hole producing device 68 enters the field is the position S2 at which the seedling removal device 45 takes out the seedling placed on the seedling stage 31. The seedling planting machine is characterized in that it is set at a forward position deviated from below.
[0004]
[Effects of the invention]
According to the present invention, the position S1 that is closed before the hole producing device 68 enters the field is entered into the field on the upper side of the downward trajectory portion that has been lowered from the lower end position P0 of the raising / lowering locus P3 of the hole producing device 68. Since the seedling removing device 45 is set at the front position that is out of the position S2 where the seedling collecting device 45 removes the seedling placed on the seedling placing stand 31 from the lower position, the seedling removing device 45 is placed on the seedling placing stand 31. Therefore, it is avoided that the soil that falls down when the seedling is removed is accumulated in the hole making device 68, and the conventional problems can be solved and the seedling can be planted well.
[0005]
【Example】
A walking type vegetable seedling planting machine according to an embodiment of the present invention will be described in detail with reference to the drawings. Reference numeral 1 denotes a mission case, to which the front portions of the left and right wheel transmission cases 3 and 3 are mounted on the left and right sides thereof so as to be rotatable around the left and right wheel drive shafts 2 and 2. The left and right drive wheels 4 and 4 are respectively pivoted at the rear ends of the left and right wheel transmission cases 3 and 3.
[0006]
Reference numeral 5 denotes an engine, which is mounted on an engine base 6 provided at the front of the mission case 1 and is provided to transmit power to the mission case 1 via a clutch case 7. Yes. Reference numerals 8 and 8 denote left and right front wheels, which are rotatably mounted on left and right front wheel support arms 11 and 11 rotatably provided on a support shaft 10 at a lower end of a support arm 9 provided at a front portion of the engine base 6. Yes. Left and right front arms 12 and 12 are provided upward at the upper ends of the left and right front wheel support arms 11 and 11, respectively, and are directed upward at the upper ends of the left and right wheel transmission cases 3 and 3, respectively. The left and right rear arms 13 and 13 are connected by left and right connecting rods 14 and 14, respectively. Accordingly, the left front wheel support arm 11 and the left wheel transmission case 3 and the right front wheel support arm 11 and the right wheel transmission case 3 rotate together, and the left drive wheel 4 and the left front wheel 8 both move up and down. In addition, both the right drive wheel 4 and the right front wheel 8 move up and down.
[0007]
A hydraulic device 15 includes a hydraulic cylinder 16 for up and down wheels, a rolling hydraulic cylinder 17 that changes the relative height of the left and right wheels, a hydraulic pump 18 that includes a vertical hydraulic valve and a rolling hydraulic valve, and the like. And fixed on the mission case 1. The hydraulic piston 19 of the hydraulic cylinder 16 for raising and lowering the wheel is mounted so as to be freely retractable in the air direction, and a crank-shaped balance device 20 is attached to the tip of the hydraulic piston 19.
[0008]
The balance device 20 protrudes with a phase difference of about 180 degrees from the left and right ends of the rotating shaft 22 in the left-right direction of the machine body supported in a state of being fitted into a cylindrical member 21 provided at the tip of the hydraulic piston 19. The left and right arms 23 and 23 are fixedly configured. And the front-end | tip part of each left-right arm 23 * 23 of this balance apparatus 20 and the right-and-left rear arm 13 * 13 provided in the said left-and-right wheel transmission case 3.3 * are connected with the right-and-left connecting rod 24 * 24. On the other hand, the rotating shaft 22 is provided with a driving arm 25 protruding upward, and the upper end of the driving arm 25 is connected to the tip of the hydraulic piston 26 of the rolling hydraulic cylinder 17. The hydraulic piston 26 of the rolling hydraulic cylinder 17 also moves back and forth in the air direction.
[0009]
However, the left and right drive wheels 4 and 4 and the left and right front wheels 8 and 8 are configured to move up and down by the same amount by the retracting and retreating of the hydraulic piston 19 of the hydraulic cylinder 16 for moving the wheel up and down in the air direction. The left drive wheel 4 and the left front wheel 8 and the right drive wheel 4 and the right front wheel 8 are configured to move up and down in a contradictory manner when the hydraulic piston 26 of the rolling hydraulic cylinder 17 moves in and out in the air direction.
[0010]
27 is a sensor for detecting the upper surface of the heel A. The lower part of the sensor contacts the multi-film B on the upper surface of the heel A and moves up and down, and the upper part is linked to the upper and lower hydraulic valves. The upper surface of 畝 A is detected so that H is always constant, the upper and lower hydraulic valves are switched, and the hydraulic piston 19 is moved back and forth in the air direction to move the left and right driving wheels 4 and 4 and the left and right front wheels 8 and 8 together. It is configured to move up and down.
[0011]
Reference numeral 28 denotes a horizontal sensor for detecting the left / right tilt of the fuselage. A weight that swings left / right by the left / right tilt of the fuselage is formed at a lower portion thereof, and an upper portion thereof is linked to a rolling hydraulic valve. The rolling hydraulic valve is switched so as to be horizontal, and the hydraulic piston 26 is moved back and forth in the air direction to move the left driving wheel 4 / left front wheel 8 and the right driving wheel 4 / right front wheel 8 upside down. It is configured to make it.
[0012]
The front end of the transmission shaft case 29 is fixed to the upper left side of the rear wall surface of the mission case 1. The front end of the cylindrical frame is fixed to the upper right side of the rear wall surface of the transmission case 1 in parallel with the transmission shaft case 29. The rear end of the cylindrical frame and the rear end of the transmission shaft case 29 are connected to the rear portion. The mission case 1, the cylindrical frame, the transmission shaft case 29, and the rear frame 30 constitute a rectangular frame in plan view.
[0013]
Reference numeral 31 denotes a seedling mount, which is provided with a seedling transfer belt 35 that is wound around and stretched around a bottom plate space portion of a frame made up of left and right standing frames 32 and 32 and front and rear bottom plates 33 and 34. It has a structure. Then, the seedling transfer belt 35 is from a seedling stage driving case 36 that takes out the power from the middle part of the transmission shaft case 29 so as to rotate by a certain amount when the seedling stage 31 reaches both left and right ends. It is driven via an appropriate intermittent drive mechanism having a driven cam driven by a drive cam fixed to the extended drive shaft. However, the seedling transfer belt 35 rotates by a certain amount (only one seedling width) when the seedling placing table 31 moves to the left and right ends, and the seedling placed on the seedling placing table 31 is transferred to the following seedling receiving frame. It is comprised so that it may transfer toward 37.
[0014]
The seedling receiving frame 37 is provided on the rear end side of the seedling mounting table 31 and is provided on the upper portion of the front support 38 that supports the front portion of the seedling mounting table with the lower part attached to the cylindrical frame and the transmission shaft case 29. A seedling outlet 39 is provided at the center of the left and right. Reference numeral 40... Is a seedling receiving rod made of a box, and is fixed to a mounting plate 41 laid horizontally between the left and right standing frames 32 and 32 of the seedling mount 31 at the upper part of the seedling receiving frame 37 and is comb teeth. The seedling receptacles 40 are provided so as to support the rear side of the pot container a for each stock of vegetable seedlings. Moreover, the upper part of the brush 40a ... made from a relatively soft nylon is attached to the attachment plate 41, and the stems and leaves of the seedlings are prevented from coming backward from the seedling receptacles 40 ....
[0015]
A seedling fixed claw 47 and a seedling movable claw 48, which will be described later, enter the seedling mount 31 with the seedling receiving cage 40 interposed therebetween to divide one seedling (one pot container a). Operates to hold. Reference numeral 42 denotes a front support roller of the seedling stage 31, and the seedling stage 31 has a rail 43 fixed to the lower surface of the front part on the front support roller 42 in a state where the seedling is placed. A general left / right structure constituted by a spiral shaft that is transmitted and rotated by the platform drive case 36 and a sliding cam that engages with the spiral groove of the spiral shaft and moves to the left and right and is connected to the bottom surface of the seedling platform 31. It is driven by the drive mechanism and reciprocates horizontally.
[0016]
Reference numeral 44 denotes a loop-shaped handle, whose left and right lower ends are fixed to the cylindrical frame and the transmission shaft case 29, respectively. Reference numeral 45 denotes a transplanting device as a seedling removing device. A seedling transplanting nail made of two iron plates, a seedling planting nail 47 and a seedling planting movable nail 48, and a seedling pusher are attached to a box-shaped transplanting tool body 46 having a hollow inside. A tool 49 is attached, and an operation mechanism for the seedling planting movable claw 48 is provided inside the seedling planting body 46 so that the seedling is held or the seedling holding the seedling is opened. Yes. The seedling pusher 49 is configured to move down at the same speed as the seedling nail 47/48 moves up from the moment the seedling held by the seedling nail 47/48 is released, The seedlings are separated from the seedling planting nails 47 and 48. In addition, 46a is an upper cover of the transplant body 46.
[0017]
Then, a midway portion of the body 46 of the transplanter 45 is pivotally attached to the distal end portion of the drive rotation crank 51 rotated by the drive shaft 50 driven by the power transmitted by the transmission shaft case 29, and the rear frame 30. The tip of the swing crank 53 whose base is pivotally attached to the lower end of the swing crank support arm 52 extending downward is pivotally attached to one end of the body 46 of the transplanter 45 to rotate the drive rotary crank 51. The trajectory P1 drawn by the tips of the seedling planting claws 47 and 48 of the transplanting device 45 is configured to be a closed loop shape that is narrow in the front-rear direction and long in the vertical direction.
[0018]
Reference numeral 54 denotes an opening device for making a hole in the multi-film B at the position where the seedling is planted, and a heating body 56 that is heated by an electric heater at the lower end of the main body 55 to melt the multi-film B and open a round hole. The main body 55 is supported by the support shafts 61 and 61 at the distal ends of the upper link 59 and the lower link 60, the base of which is pivotally supported by the support shafts 58 and 58. It is pivotally attached. Reference numeral 62 denotes a driven rotating body pivotally attached to the upper link 59 by a shaft 63.
[0019]
Reference numeral 64 denotes a drive cam that rotates in the direction C by a drive shaft 66 provided on a transmission case 65 that diverges and extracts power from the middle lower part of the transmission shaft case 29. The main body 55 is urged downward by a tension spring 67 so that the driven rotary body 62 pivotally attached to the upper link 59 is in contact with the drive cam 64, and the drive cam 64 is moved in the direction C. When the driven rotating body 62 passes through the stepped portion 64a of the drive cam 64 due to the rotation, the lower end of the heating body 56 moves downward along the locus P2, and then moves up along the locus P2 as the drive cam 64 rotates. . Accordingly, a hole is made in the multi-film B at a position where the lower end of the heating body 56 moves downward along the locus P2.
[0020]
68 is a hole puncher for opening a seedling planting hole on the upper surface of the ridge A, and the upper part is fixed to the lower part of the parallel link 70 pivotally attached to the support body 57 fixed to the machine body by pivot shafts 69 and 69. A side-view L-shaped connecting plate 71 is pivotally supported by pivot shafts 72 and 72, and a rear portion of a parallel link 74 whose front portion is pivotally supported by pivot shafts 73 and 73. Are pivotally attached to pivot shafts 75 and 75.
[0021]
Reference numeral 76 denotes a rotary crank having a base fixed to a drive shaft 66 provided in the transmission case 65, and its tip is pivotally attached to an arm 77 provided in the middle of the parallel link 74. At the same time, when the rotary crank 76 rotates in the direction C, the lower end of the hole producing device 68 (the virtual locus at the lower end of the hole producing device 68 when operated with the hole producing device 68 closed) operates along the locus P3. Then, a seedling planting hole is opened on the upper surface of ridge A.
[0022]
The hole forming device 68 has a bowl-shaped front and rear opening / closing body 79/79 at the lower portion of a cylindrical body 78 pivotally supported by a pivot shaft 75/75 at the rear portion of the parallel link 74. 80 is supported in a freely openable / closable manner in the front-rear direction, and is pivotally supported by a pivot shaft 82 at the tip of an arm 81 provided on a bowl-shaped front opening / closing body 79 and a lower end portion of the support body 57 whose upper portion is fixed to the body. A connecting rod 86 is connected to a pivot shaft 85 at the tip of a swing arm 84 rotatably provided on the shaft 83. Reference numeral 87 denotes a locking pin that protrudes from the tip of the swinging arm 84, and is the maximum length when the swinging arm 84 and the connecting rod 86 are linearly in contact with the lower surface of the connecting rod 86. This is a limitation. On the other hand, a locking pin 88 provided on the front opening / closing body 79 is engaged with a groove 89 of the rear opening / closing body 79, and is synchronized with the opening / closing operation of the front opening / closing body 79 by the swing arm 84 and the connecting rod 86. The rear opening / closing body 79 also opens and closes. A notch 78a is provided on the rear side of the cylindrical body 78 so that the seedling planting claws 47 and 48 and the seedling pressing tool 49 can intervene at the time of seedling planting.
[0023]
Accordingly, when the rotary crank 76 rotates in the direction C, the hole producing device 68 moves up and down, but the hook-shaped front and rear opening / closing bodies 79 and 79 are moved from the open state of FIG. It is pushed and closed, and is pulled and opened by the connecting rod 86 at the PO position of the locus P3. That is, the front and rear opening / closing bodies 79 and 79 are closed from the S1 position to the PO position on the locus P3, and the front and rear opening / closing bodies 79 and 79 are open from the PO position to the S1 position. And the position S1 where this hole making device 68 closes is set to the front position which remove | deviated from the position S2 from which the transplanting apparatus 45 takes out the seedling mounted in the seedling mounting stand 31. The connecting rod 86 is provided with a turnbuckle 86a so that the length can be adjusted, and the opening / closing timing of the bowl-shaped front and rear opening / closing bodies 79, 79 can be adjusted. Further, a nut 81b is fixed to a plate body 81a protruding upward from the front opening / closing body 79, and a bolt 81c is passed through the nut 81b and positioned by a fixing bolt 81d. The protrusion L from the body 81a can be adjusted. Since the maximum opening amount of the hook-like front and rear opening / closing bodies 79 and 79 is determined by the tip of the bolt 81c coming into contact with the outer wall surface of the cylindrical body 78, the protrusion amount L of the bolt 81c is determined. The opening degree of the bowl-shaped front and rear opening / closing bodies 79 can be adjusted by adjustment.
[0024]
90 and 90 are left and right soiling devices for bringing seedlings into the seedlings from both the left and right sides of the seedlings planted on the upper surface of the ridge A so as to reliably plant the seedlings on the ridge A. It is comprised by. Reference numerals 91 and 91 are general left and right side clutch levers for operating the left and right side clutches of the left and right drive wheels 4 and 4 respectively.
[0025]
Reference numeral 92 denotes a planting clutch lever that operates and stops the seedling mount 31, the transplanting device 45, the opening device 54, and the hole making device 68. A hydraulic lever 93 is linked to the vertical hydraulic valve via a connecting wire, and the left and right drive wheels 4 and 4 and the left and right front wheels 8 and 8 are automatically moved up and down by detecting the upper surface of the heel A of the sensor 27. It is configured such that it can be switched to an automatic control position that is dynamically adjusted and a body lift position that forcibly moves the left and right drive wheels 4 and the left and right front wheels 8 and 8 downward.
[0026]
94 is a main clutch lever, which operates the main clutch in the clutch case 7 to interrupt the power from the engine 5. Reference numeral 95 denotes a spare seedling stage whose base is fixed to the handle 44. Here, the operation mechanism of the seedling transplanting movable claw 48 and the seedling pressing tool 49 of the transplanting device 45 will be described.
[0027]
A driven cam shaft 100 is engaged with a distal end portion of a driving rotary crank 51 that rotates with a base portion fixed to the driving shaft 50 by a key 101, and is freely rotatable by bearings 102 and 102 in the implant body 46. Is provided. Reference numeral 103 denotes a drive cam for the seedling moving claw 48, which is configured to rotate integrally with the driven cam shaft 100 by a key 104.
[0028]
Reference numeral 105 denotes an interlocking body composed of an outer cylindrical body 106 and an inner shaft 107, and the tip of the inner shaft 107 is in contact with the cam surface of the drive cam 103. Then, the middle part of the inner shaft 107 is supported by the guide part 108 provided in the transplanter main body 46, the outer cylinder 106 is supported by the transplanter main body 46, and the entire interlocking body 105 reciprocates in the direction of the arrow needle. It is provided so that it can move. On the other hand, a male screw 109 formed on the inner shaft 107 is screwed to a female screw 110 formed on the outer cylindrical body 106, and a portion where the male screw 109 of the inner shaft 107 protrudes from the outer cylindrical body 106. The inner shaft 107 and the outer cylindrical body 106 are fixed so as to operate integrally by tightening with a nut 111.
[0029]
Reference numeral 112 denotes a rotation shaft provided on the transplant device main body 46 so as to be reciprocally rotatable in the arrow head direction, and is provided so as to penetrate from the inside of the transplant device main body 46 to the outside. And the base of the seedling movable claw 48 is fixed to the outside, and the seedling movable claw 48 opens in the direction indicated by the arrow by the rotation of the rotation shaft 112 in the direction of the arrow, and the rotation in the direction toward the rotation shaft 112 The seedling movable claw 48 is configured to close in the direction of the arrow.
[0030]
Reference numeral 113 denotes a swing arm fixed to the rotary shaft 112 inside the transplant device main body 46, and its tip engages with a concave portion 114 formed on the tip side of the outer cylinder 106 of the interlocking body 105. Yes. Reference numeral 115 denotes a compression spring provided between the inner wall of the transplant device main body 46 and the outer cylindrical body 106 of the interlocking body 105, and the direction of the arrow H so that the tip of the interlocking body 105 is always in contact with the cam surface of the drive cam 103. Is energized.
[0031]
Reference numeral 116 denotes a hexagonal portion provided at an outer end portion of the outer cylindrical body 106 of the interlocking body 105. When the nut 111 is loosened and the hexagonal portion 116 is grasped and turned, the outer cylindrical body 106 is formed. Only the inner shaft 107 is moved in the arrow needle direction by the male screw 109 of the inner shaft 107 screwed to the female screw 110, and the length of the inner shaft 107 protruding from the tip of the outer cylindrical body 106. Since W is changed, the width X when the seedling movable claw 48 is most closed can be changed and adjusted. After the adjustment, the nut 111 is tightened in a state where the hexagonal portion 116 is grasped with a spanner, and the inner shaft 107 and the outer cylindrical body 106 are fixed so as to operate integrally.
[0032]
Reference numeral 117 denotes a drive cam for the seedling pusher 49, which is configured to rotate integrally with the driven cam shaft 100 by a key 104. Reference numeral 118 denotes a swing interlocking body pivotally supported on a support shaft 119 supported on the transplanter main body 46, one end 120 of which is in contact with the cam surface of the drive cam 117, and the other end 121 is formed in a U shape. The seedling pusher 49 is engaged with a reciprocating shaft 122 attached to the tip. A compression spring is provided between the convex portion 123 provided on the one end 120 portion side of the swing interlocking body 118 and the inner wall surface of the upper lid 46a fixed to the graft body 46 with screws. The one end 120 of the swing interlocking body 118 is always urged so as to contact the cam surface of the drive cam 117. However, when one end 120 of the swing interlocking body 118 is pushed up by the convex portion of the cam surface of the drive cam 117, the swing interlocking body 118 swings around the support shaft 119 and the other end 121 moves downward. The seedling pusher 49 also moves downward. Conversely, when one end 120 of the swing interlocking body 118 is disengaged from the convex portion of the cam surface of the drive cam 117, the swing interlocking body 118 swings backward around the support shaft 119 by the biasing force of the compression spring, and the other end. Since 121 moves up, the seedling pusher 49 also moves up.
[0033]
With the above configuration, when the drive shaft 50 is driven and rotated by the power transmitted by the transmission shaft case 29, the intermediate portion of the body 46 of the transplanter 45 is pivoted by the driven cam shaft at the tip of the drive rotation crank 51. One end of the main body 46 of the transplanting device 45 is pivotally attached at the distal end of the swinging crank 53 that is attached to the lower end of the swinging crank support arm 52 that extends downward from the rear frame 30. Therefore, the locus P1 drawn by the tips of the seedling planting claws 47 and 48 of the transplanting device 45 becomes a closed loop shape that is narrow in the front-rear direction and long in the vertical direction by the rotation of the driving rotary crank 51. In the locus P 1, just before the seedling fixing claw 47 and the seedling movable claw 48 enter the seedling outlet 39, the seedling movable claw 48 is open and the seedling pusher 49 is moved upward. When both claws 47 and 48 come to both sides of the seedling after entering, the seedling movable claws 48 are closed and grabbed the seedling, and then both nails 47 and 48 are moved downward while holding the seedling. Then, when the hole producing device 68 is in a state where a seedling planting hole is opened on the upper surface of the heel A, it intervenes inside the cylindrical body 78 of the hole producing device 68, the seedling planting movable claw 48 opens and the seedling pushing tool 49 is lowered. Move to plant seedlings.
[0034]
Next, a case where seedling planting work is performed with the above-described walking type vegetable seedling planting machine will be described. In the field where the left and right driving wheels 4 and 4 and the left and right front wheels 8 and 8 of the seedling planting machine stretch the multi-film B. Set the aircraft so as to straddle the ridge A, and place the pot-shaped vegetable seedlings grown in a paper seedling device in which the pot containers a are arranged vertically and horizontally at predetermined intervals on the seedling stage 31 After the storage, the engine 5 is started and the main clutch lever 94 is operated to advance the aircraft.
[0035]
At this time, if the planting clutch lever 92 is operated to operate the seedling mount 31, the transplanting device 45, the opening device 54, and the hole making device 68, and the hydraulic lever 93 is operated to the automatic control position, Since the mounting table 31 is reciprocally swung in the left-right direction via the left-right drive mechanism, the bottom surface and the tip side of the tip of the seedling located on the rear end side are received by the seedling receiving frame 37 and the seedling receiving rod 40, respectively. In this state, the seedlings are moved to the left and right, and the seedlings are fed out to the seedling taking-out port 39, and are sequentially grasped by the seedling planting claws 47 and 48 of the transplanting device 45 that draws the seedling planting locus P1. On the other hand, the heated opening device 50 forms a seedling planting hole on the upper surface of the ridge A while opening a hole at the seedling planting position of the multi-film B. Also, the left and right drive wheels 4 and 4 and the left and right front wheels 8 and 8 are automatically adjusted up and down by the detection of the upper surface of the heel A of the sensor 27, and the seedlings are always planted in the heel A at a predetermined planting depth H. Therefore, the seedling planting claws 47 and 48 intervene inside the cylindrical body 78 of the hole producing device 68 when the hole producing device 68 has a seedling planting hole opened on the upper surface of the ridge A, and the seedling planting movable claws 48 are opened. The seedling pusher 49 moves down to plant seedlings. Thereafter, the seedling planted holes are filled by filling the soil from both the left and right sides of the seedlings planted by the left and right soil gathering devices 90, 90, and the seedlings are reliably planted in the ridge A.
[0036]
On the other hand, by loosening the nut 111 outside the transplanting device 45 and gripping and turning the hexagonal portion 116, the width X of the seedling planting fixed claw 47 and the seedling transplanting movable claw 48 when they are most closed is changed and adjusted. Therefore, depending on the size of one seedling (size of one pot container a), the state of the seedling root and the quality of the seedbed soil, the seedling fixing nail 47 and the seedling are very easily The width of the planting movable claw 48 can be adjusted. In addition, when the width X of the seedling planting claw 47 and the seedling planting movable claw 48 when they are most closed is changed and adjusted, the width of the most opened state is also adjusted at the same time. That is, when the width X when it is most closed is narrowed, the width when it is most opened is also narrowed. When the width X when it is most closed is widened, the width when it is most opened is also widened.
[0037]
In particular, since the position S1 that is closed before the hole producing device 68 enters the field is set to a position that is out of the position S2 where the seedling removal device 45 takes out the seedling placed on the seedling stage 31, the seedling When the picking device 45 takes out the seedling placed on the seedling mount 31, it is avoided that soil spilling is collected and adhered in the hole making device 68, and a good seedling planting operation can be performed.
[Brief description of the drawings]
FIG. 1 is an overall side view of a walking type vegetable seedling planting machine.
FIG. 2 is a side view for explaining the operation of the hole making device 68;
3 is a side view for explaining the operation of the hole opening device 54. FIG.
FIG. 4 is a side view for explaining the operation at the moment when the transplanting device 45 releases the seedling in the hole making device 68;
FIG. 5 is a partial cross-sectional plan view of the transplanting device 45 with the upper lid 46a opened.
6 is an operation explanatory view of the transplant device 45. FIG.
7 is a side view for explaining the operation of the transplant device 45 with respect to the locus P3 of the hole producing device 68. FIG.
FIG. 8 is an enlarged rear view of the vicinity of a seedling outlet 39 of the seedling receiving frame 37;
[Explanation of symbols]
31 Seedling stand 45 Seedling device (transplant device)
68 Positioner S1 Position S2 where the positioner 68 closes Position P0 from which the transplanter 45 takes out the seedling P0 Lower end position P3 of the lifting locus Lifting locus

Claims

After opening in the closed state and entering the field, it is opened and lifted to open and close the openable hole forming device (68) for forming the seedling planting hole in the field and the seedling placed on the seedling platform (31) In a seedling planting machine equipped with a seedling removal device (45) that operates so that the extracted seedling is filled in the hole puncher (68), the hole puncher (68) has an ascending / descending locus (P3). From the lower end position (P0), it goes up to the closing position (S1) before entering the field on the upper side of the descending locus part that has turned downward after ascending, and ascends and descends from the closing position (S1) above the ascending locus (P3). Elevating trajectory (P3) from the lower end position (P0) of the ascending / descending trajectory (P3) with the hole producing device (68) opened in a state of being closed to the lower end position (P0) of the trajectory (P3). The seedling removal device (45) is placed on the seedling when it rises to the upper closed position (S1) It is set so that it passes under the position (S2) where the seedling placed on (31) is taken out, and the closed position (S1) that is closed before the hole making device (68) enters the field is used as a seedling removing device ( 45) A seedling transplanter characterized in that it is set at a front position deviating from the position (S2) from which the seedling placed on the seedling stage (31) is taken out.