JP3917920B2

JP3917920B2 - Seedling transplanter

Info

Publication number: JP3917920B2
Application number: JP2002273674A
Authority: JP
Inventors: 武男阿久津
Original assignee: 武蔵工業有限会社
Priority date: 2002-09-19
Filing date: 2002-09-19
Publication date: 2007-05-23
Anticipated expiration: 2022-09-19
Also published as: JP2004105115A

Description

【０００１】
本発明は、葉菜類の苗、特に、ネギ苗を予めあけてある移植穴に一本ずつ自動的に植えることができる苗移植装置に関するものである。また、苗の移植に先立って移植穴をあけることもできる苗移植装置に関するものでもある。
【０００２】
【従来の技術】
ネギは育苗トレーに育苗したネギ苗を畑に移植して育成されている。移植に当たっては、畑を耕して図１３（ａ）のような植込み溝Ａを掘り、その植込み溝Ａ内に育苗トレーから取り出したネギ苗Ｂを人手により移植し、覆土して定植している。しかし、植込み溝Ａ内にネギ苗Ｂを移植すると、植込み溝Ａが横に長いため、ネギ苗Ｂが植込み溝Ａ内で横に傾いたり倒れたりすることがある。このため覆土する際にネギ苗を立て直さなければならず、覆土作業が面倒であった。また、人手で移植をするため、多くの労力が必要となり、しかも、作業能率が悪かった。
【０００３】
そこで従来は、図１３（ｂ）のように、畑に丸い移植穴Ｄを自動的に開ける機械（自動穴あけ機）が開発され、その丸い移植穴Ｄの中にネギ苗Ｂを移植することが行われている。丸い移植穴Ｄにネギ苗Ｂを移植すればネギ苗Ｂが傾いたり、倒れたりせず、覆土し易くなる。前記自動穴あけ機は特許出願されている（例えば、特許文献１参照）。この種の穴あけ機は他にもある。（例えば、特許文献２、特許文献３参照）。
【０００４】
【特許文献１】
特開平８−１９３０６号公報
【特許文献２】
実開平４−１０３４０８号公報
【特許文献３】
特開平７−１０７８１５号公報
【０００５】
【発明が解決しようとする課題】
前記、特開平８−１９３０６号の自動穴あけ機によれば、丸い移植穴を自動的にあけることができるため省力化されて便利であるが、ネギ苗の移植は依然として一本ずつ人手で行わなければならず、その作業が重労働であると同時に作業能率が悪かった。
【０００６】
【課題を解決するための手段】
本発明は丸い移植穴への育苗トレーからの苗の移植、特に、ネギ苗の移植を自動化し、作業能率の向上と省力化を実現するものである。
【０００７】
【課題を解決するための手段】
本願発明の請求項１記載の苗移植装置は、走行可能な機械本体１（図３）に、図４のように縦列及び横列に育苗ポット２が形成された育苗トレー３をセット可能なトレーセット部４と、図５のように育苗ポット２に育苗されている苗Ｂを図１のように育苗ポット２の底面下方より突き出す突き具５と、突き具５を操作して突き具５により苗Ｂを育苗ポット２から突き出させる突き具操作機構６と、育苗ポット２から突き出された苗Ｂを根を下にして移植穴Ｄに落下させる落下ガイド７と、育苗トレー３の横一列の育苗ポット２の苗Ｂの突き出しが終わると育苗トレー３を縦一列分引下げて次の突き出し位置にセットする引下げ機構８（図２）とを備え、前記突き具５は図３のようにトレーセット部４にセットされた育苗トレー３の底面下方に複数設けられ、突き具操作機構６は個々の突き具５に設けられ、個々の突き具５は突き具操作機構６により蓄勢された突き出し力により育苗トレー３の育苗ポット２の苗を底面下方から個別に突き出し可能であり、前記横一列の苗Ｂの突き出しと、育苗トレー３の引下げとが繰り返し行われて、育苗トレー３からの移植穴Ｄへの苗Ｂの移植が自動的に行われるものである。
【０００８】
本願発明の請求項２記載の苗移植装置は、請求項１記載の苗移植装置において、夫々の突き具操作機構６（図１）は、個々の突き具５に突き出し力を蓄勢する蓄勢スプリング１０と、個々の突き具５を育苗トレー３から離れる方向に押して蓄勢スプリング１０に突き出し力を蓄勢する蓄勢カム１１とを備え、夫々の蓄勢カム１１には突き具５と係止する係止部１２とその係止が解除される解除部１３とを有し、図６のように夫々の蓄勢カム１１の係止部１２及び解除部１３は蓄勢カム１１の回転方向に位置をずらして回転軸１４に取り付けられ、図７のように夫々の蓄勢カム１１の係止部１２は回転中に夫々の突き具５と係止して蓄勢スプリング１０に突き出し力を蓄勢し、図８のように回転軸１４の回転により蓄勢カム１１の回転が進んで解除部１３が突き具５に差し掛かると、蓄勢スプリング１０への蓄勢が解除され、夫々の蓄勢スプリング１０が時間差をもって夫々の突き具５を突き出し、夫々の突き具５により育苗トレー３から苗Ｂが突き出されるものである。
【０００９】
本願発明の請求項３記載の苗移植装置は、請求項２記載の苗移植装置において、引下げ機構８（図２）が蓄勢カム１１と同期して回転する引下げカム１６（図９）と、引下げカム１６により駆動されて育苗トレー３を引下げる引下げ具１７を備えたものである。
【００１０】
本願発明の請求項４記載の苗移植装置は、請求項１乃至請求項３のいずれかに記載の苗移植装置において、二以上の突き具５により育苗トレー３の苗Ｂを同時に二以上突き出しできるように、二以上の突き具操作機構６によりに二以上の突き具５を同期して操作するものである。
【００１１】
本願発明の請求項５記載の苗移植装置は、請求項１乃至請求項４のいずれかに記載の苗移植装置において、機械本体１（図３）が移植穴Ｄをあける穴あけ機構Ｆ（図２）を備えたものである。本願発明の請求項６記載の苗移植装置は、請求項１乃至請求項４のいずれかに記載の苗移植装置において、機械本体１（図３）が前記穴あけ機構Ｆを備えないものである。
【００１２】
【実施の形態】
本発明の苗移植装置の実施の形態を以下に説明する。本発明の苗移植装置は図４に示すように多数の育苗ポット２が縦、横に形成された育苗トレー３を図３の機械本体１のトレーセット部４にセットできるようにしてある。トレーセット部４にセットされた育苗ポット２の苗Ｂは図１のように突き具５により育苗ポット２の底面下方より一つずつ突き出され、育苗ポット２から突き出されて飛び出した苗Ｂは落下ガイド７の受体２０に当たり、自重で根が下向きになって落下ガイド７のホッパー２１内に落下するようにしてある。ホッパー２１の下には落下通路２２が設けられ、落下通路２２に開閉具２３を設けて落下通路２２が一定のタイミングで開閉されるようにし、落下通路２２が開閉具２３により閉じられると苗Ｂが落下通路２２内に一時停止し、開閉具２３が開くと苗Ｂが落下通路２２内を滑落し、落下通路２２の下にある垂直なＶ字状の排出ガイド２４（図１、図１２）に当たって垂直に落下し、土壌Ｇにあけられている移植穴Ｄに落下するようにしてある。この場合、図３のように横一列に多数並べてある突き具５により、育苗トレー３の横列の育苗ポット２から苗Ｂを順次突き出し、横一列の育苗ポット２からの突き出しが終わったら、引下げ具１７（図２、図９）により育苗トレー３を縦方向に一列分引下げて、次の横列の育苗ポット２を突き出し位置にセットし、その位置で前記と同様に突き具５により横列の育苗ポット２から苗を突き出すことができるようにしてある。
以下、前記した、育苗ポット２からの苗Ｂの突き出し―横一列の育苗ポット２からの苗Ｂの突き出し終了―育苗トレー３の引下げ―横一列の育苗ポット２からの突き出しを繰り返す。一枚の育苗トレー―３からの苗Ｂの突き出しが途中まで行われてから或いは完了してから、機械本体１のトレーセット部４に手作業により新たな育苗トレー３をセットすると、前記突き出しが連続的に行われるようにしてある。
【００１３】
図４の育苗トレー３の育苗ポット２は育苗トレー３の横方向中央から左側と右側に二分され、左右夫々の側に７個ずつ形成されている。左右の育苗ポット２の両外側には引下げ係止孔２５が縦一列にあけられている。また、図４（ｂ）のように育苗トレー３の横方向両側裏面には裏面側に突出する突条２６が突設されている。この実施形態では左側の育苗ポット２の苗と、右側の育苗ポット２の苗を一本ずつ同時に突き出して、二列の移植穴Ｄに同時に苗を移植できるようにしてある。
【００１４】
図３の機械本体１は無端走行具２７や図示されていない車輪などの走行具により走行可能であり、前方部分に走行中に土壌に移植穴を開ける穴あけ機構Ｆ（図２）を備えており、その後方に本願発明の移植装置が備えられている。本発明の移植装置は穴あけ装置を備えていない機械本体に装備することもできる。前者の場合は一台の機械で移植穴をあけながら本発明の移植装置で移植穴に苗に移植することができ、後者の場合は、予めあけてある移植穴に本発明の移植装置で苗を移植することができる。
【００１５】
図３のトレーセット部４はその底板２８の幅方向両側に側板２９が立ち上げられて、上面、上端、下端の３方が開口する皿状に形成されており、機械本体１に前下がり傾斜に取り付けられて、上端開口部３０から育苗トレー３を差込むと育苗トレー３が前下がりになって下方へ滑り易くなるようにしてある。
【００１６】
突き具５は図７のようにトレーセット部４の下方後方に配置されている。突き具５は先端部３１を細くして育苗ポット２の底３２（図５）の孔３３に差込み可能とし、後方の軸３４（図７）の外周にコイル状の蓄勢スプリング１０を被せてある。蓄勢スプリング１０は蓄勢カム１１が回転して蓄勢カム１１の係止部（外周面）１２が突き具５の係止受け部３８に係止しながら回転し、突き具５が後退すると圧縮されて突き出し力が蓄勢される。蓄勢カム１１の回転が更に進むと図８のように蓄勢カム１１の係止部１２が突き具５の係止受け部３８から外れ、同時に解除部（切欠部）１３が係止受け部３８に差し掛かり、蓄勢スプリング１０が伸びて突き具５が図８のように先方上方（育苗トレー３側）に勢いよく突き出され、突き具５の先端部３１が育苗ポット２の底３２の孔３３に進入し、育苗ポット２内の苗Ｂを突き出す。苗Ｂは育苗ポット２から勢いよく飛び出す。
【００１７】
突き具５は図３のように育苗トレー３の横一列の育苗ポット２の数（図４では中央部の左側に７個、右側に７個の計１４個）が横一列に配列されている。突き具５は全て同じ形状であり、突き具５の位置は育苗ポット２の間隔と同じ間隔で配置されている。育苗ポット２は育苗トレー３の横方向中央部の左側と右側に二分されているため、突き具５の配列も図６のように７枚ずつ左右に二分されている。
【００１８】
蓄勢カム１１は図３のように突き具５の数と同じ数だけ設けて個々の突き具５とセットにしてある。蓄勢カム１１は円形であり、その外周面を突き具５の係止受け部３８に係止する係止部１２とし、外周面の一部を切り欠いて突き具５の係止受け部３８から外れる解除部１３としてある。育苗トレー３の育苗ポット２が前記のように横方向中央の左側と右側に二分されているため、回転軸１４に固定された多数枚の蓄勢カム１１も育苗ポット２の配列に合わせて横方向左右に二分されており、しかも、左右の蓄勢カム１１は左右の育苗ポット２の間隔に合わせて回転軸１４に取り付けられている。
【００１９】
図６のように回転軸１４に取り付けられた多数枚の蓄勢カム１１は左側のものも、右側のものも左右いずれか一方から解除部１３を一定距離ずつ周方向にずらしてある。このように位置をずらすことにより、回転軸１４が一回転すると全ての蓄勢カム１１が一回転し、その間に、係止部１２により突き具５の係止受け部３８が押されて突き具５が押し戻され、蓄勢スプリング１０が圧縮されて蓄勢スプリング１０に突き出し力が蓄勢される。蓄勢カム１１の回転が進んで蓄勢カム１１の解除部１３が突き具５の係止受け部３８に差し掛かると、蓄勢スプリング１０の蓄勢が解除されると同時にそれまで蓄勢されていた突き出し力で押し具５が突き出されて、育苗トレー３の育苗ポット２の苗Ｂが突き出される。この場合、回転軸１４に取り付けられている蓄勢カム１１の解除部１３の位置がずれているため、その位置ずれしている分だけ、夫々の蓄勢スプリング１０の蓄勢が時間差をもって解除され、突き具５がその時間差で突き出され、苗Ｂが一個ずつ順次突き出される。この場合、回転軸１４に取り付けられた左右の蓄勢カム１１を二つずつ同期させて位置ずれさせておくことにより、同期している左右二つの蓄勢カム１１により左右の育苗ポット２の苗Ｂが同時に突き出されて、二つの苗Ｂ（左右一つずつ）が同時に飛び出し、二列並行にあけてある二つの移植穴Ｄに同時に苗Ｂを移植することができる。
【００２０】
図１の落下ガイド７は突き出されて飛び出した苗Ｂが突き当たる受体２０と下方が細くなっているホッパー２１と落下通路２２と排出ガイド２４とから構成されている。ホッパー２１は受体２０で受け止められて根が自重で下になって落下する苗Ｂを収容するものであり、落下通路２２はホッパー２１内の苗が落下する通路であり、排出ガイド２４は落下通路２２を落下してくる苗Ｂを垂直にして土壌Ｇの移植穴Dに誘導するものである。落下通路２２の上部には開閉具２３が配置されている。開閉具２３は落下通路２２の内部を定期的に開閉して、閉じたときに苗Ｂを一時停止させ、開いたときに苗Ｂを落下させるものである。開閉具２３にはそれを開閉操作する開閉具操作機構４０が連結されている。
【００２１】
開閉具２３は図１のように下向きＶ字状に形成されており、軸４１により回転自在に取り付けられている。開閉具操作機構４０は開閉具２３の外側下端部にアーム４２がピン４３により回転可能に連結され、アーム４２の外側に回転可能な偏心カム４４が配置されている。この偏心カム４４が回転してそのカム４４の外周突面４５がアーム４２に接触するとアーム４２が開閉具２３側に押されて、開閉具２３が軸４１を中心軸として上方（図１の左側）に首振りし、開閉具２３が落下通路２２内を閉じ、偏心カム４４の外周扁平面４６がアーム４２に接触するとアーム４２がスプリング４７に引き戻され、開閉具２３が軸４１を中心軸として下方（図１の右側）に首振りし、開閉具２３が落下通路２２内を閉じるようにしてある。この開閉操作が偏心カム４４が一回転する度に繰り返し行われる。この場合、偏心カム４４の回転は苗Ｂが突き出される度に開閉具２３が落下通路２２内を開閉するタイミングにしてある。
【００２２】
育苗トレー２を縦一列分ずつ引下げる引下げ機構８（図２）を図９〜図１１に示す。この引下げ機構８は図９のように蓄勢カム１１が多数取付けられている回転軸１４の一端に取り付けられた引下げカム１６と、機械本体１に固定されているブラケット５０と、ブラケット５０に矢印ａ−ｂ方向に往復移動可能に取り付けられているスライドアーム５１と、スライドアーム５１を常に図９の左側に引いている戻しスプリング５２と、スライドアーム５１に取り付けられてスライドアーム５１と共にそれと同方向に往復移動する押し爪５３と、回転軸５４に取り付けられている駆動ギア５５と、回転軸５４に取り付けられて育苗トレー３の引下げ係止孔２５に係止する引下げ具（例えばギア）１７とを備えている。前記スライドアーム５１の先端にはストッパー５６が形成されており、それは図１０のように駆動ギア５５の爪に係止して駆動ギア５５の回転を規制している。
【００２３】
前記引下げ機構８は引下げカム１６が一回転する度に、引下げカム１６の突起５７によりスライドアーム５１の後端面が図１１のように矢印方向に押されて、スライドアーム５１が同方向に移動（スライド）する。これによりストッパー５６が駆動ギア５５の爪から外れて駆動ギア５５が回転可能となる。このとき、スライドアーム５１の前記スライドに伴って押し爪５３が同時にスライドするため、駆動ギア５５が押し爪５３により一爪分だけ回転させられる。駆動ギア５５の回転により駆動ギア５５が取付けられている回転軸５４が回転し、その回転により、回転軸５４に取付けられている引下げ具１７が一爪分回転し、その回転により育苗トレー３が引下げ係止孔２５一孔分（育苗ポット一列分）だけ引下げられる。引下げカム１６が更に回転するとそのカム１６の突起５７がスライドアーム５１の後端面から外れてその突起５７による押しが解除される。そのとき戻しスプリング５２によりスライドアーム５１が引き戻され、押し爪５３も引き戻され、押し爪５３が駆動ギア５５の一つ手前の爪に係止する。同時に、スライドアーム５１の先端のストッパー５６が駆動ギア５５の爪に係止して駆動ギア５５の回転が規制される。
【００２４】
本発明の苗移植装置を使用して、育苗トレー３の育苗ポット２内の苗Ｂを土壌の移植穴に移植するには次のようにして行われる。この説明では苗Ｂはネギの苗であるが、本発明で移植できる苗はネギの苗に限られない。
（１）図７のようにトレーセット部４に苗Ｂが育苗されている育苗トレー３をセットする。このセットにより図９のように引下げ具１７のいずれかの爪が育苗トレー３の引下げ係止孔２５に入り込む。
（２）エンジンなどの動力源の駆動により機械本体１を走行させる。このとき、機械本体１は移植する畝を跨いで走行させる。
（３）機械本体１の始動スイッチの操作により苗移植装置の回転軸１４（図７）を回転させて、回転軸１４に取り付けられている蓄勢カム１１及び引下げカム１６（図９）を回転させる。
（４）蓄勢カム１１の回転により図７のように蓄勢カム１１の係止部１２が突き具５の係止受け部３８に係止して突き具５を後退させ、スプリング１０を圧縮させてスプリング１０に復元力（突き出し力）を蓄勢する。
（５）回転軸１４の回転が進んで蓄勢カム１１の回転が進むと、図８のように蓄勢カム１１の係止部１２が突き具５の係止受け部３８から外れ、スプリング１０が伸びてその突き出し力により突き具５が育苗トレー３側に急激に突き出されて育苗ポット２の底３２の孔３３に進入し、育苗ポット２内の苗Ｂを突き出す。
（６）育苗ポット２から突き出された苗Ｂは、図１のように育苗トレー３の先方に配置されている受体２０に当たり、自重により根が下になって落下する。
（７）落下した苗Ｂは受体２０の下に配置してあるホッパー２１に入り、ホッパー２１の落下通路２２に滑落し、落下通路２２内の開閉具２３に当たって一時停止する。その苗は開閉具２３が開くと滑落し、排出ガイド２４に案内されて垂直に下向きになり、土壌（畝）Ｇにあけられている移植穴Ｄに落下する。
（８）回転軸１４が回転することにより前記（４）〜（７）の操作が蓄勢カム１１により順次行われる。
（９）横一列の育苗ポット２の苗Ｂの移植が終了すると、図９の引下げカム１６が一回転してスライドアーム５１を移動させる。このときスライドアーム５１のストッパー５６による駆動ギア５５の係止が解除されるため、スライドアーム５１のスライドに伴って押し爪５３も同方向に移動するため、押し爪５３により駆動ギア５５が押されて一爪分回転し、それに伴って回転軸５４が回転し、引下げギア１７が一爪分回転して、育苗トレー３が縦一列分（一孔分）だけ引下げられる。
（１０）引下げられた育苗トレー３は図７のようにトレーガイド６０に沿って下方に送り出される。このとき、育苗トレー３は樹脂製であるため、トレーガイド６０のカーブに沿って湾曲する。
（１１）前記（４）〜（１０）の操作が繰り返し行われて一枚の育苗トレー３の苗Ｂの移植が途中まで進行したら、或いは育苗トレー３の苗の移植が完了したら、新しい育苗トレー３をトレーセット部４にセットして、前の育苗トレー３の移植が完了すると自動的に次の育苗トレー３の苗Ｂが移植されるようにする。移植の終えた育苗トレー３は前記駆動ギア５５が一回転する度に引下げが繰り返されて、育苗トレー３がトレーガイド６０から排出される。
【００２５】
前記作用は育苗ポットから一個ずつ苗が突き出される場合であるが、図４のように育苗トレー３の幅方向中央部から左側と右側と分かれて育苗ポットが形成されている場合は、左右の一つずつの育苗ポット（計二つの育苗ポット）から同時に苗を突き出して、一度に二列の移植穴に苗を移植することができる。この場合は、図１の受体２０、ホッパー２１、落下通路２２、排出ガイド２４の夫々を横に二つ並べて配置しておく。
【００２６】
【発明の効果】
本願発明の請求項１記載の苗移植装置は次のような効果がある。
１．トレーセット部に育苗トレーをセットして機械本体を走行させ、突き具操作機構により突き具を操作すると、育苗トレーの苗が移植穴に自動的に移植されるため作業能率が向上し、大幅な省力化が可能となる。
２．苗のなくなった育苗トレーが自動的に送り出されるため、育苗トレーを一々排出する必要がなく、移植作業がし易い。
３．突き具操作機構により突き具に突き出し力が自動的に蓄勢されるため、多数の突き具で順次自動的に苗を移植することができる。
【００２７】
本願発明の請求項２記載の苗移植装置は次のような効果がある。
１．突き具操作機構は、個々の突き具に突き出し力を蓄勢する蓄勢スプリングと、個々の突き具を操作して蓄勢スプリングに突き出し力を蓄勢する蓄勢カムとから構成されるため、構成が簡潔である。
２．夫々の蓄勢カムに突き具と係止する係止部と、その係止が解除される解除部とを設け、夫々の蓄勢カムの係止部及び解除部を蓄勢カムの回転方向に位置をずらして回転軸に取り付けたので、回転軸の回転により蓄勢スプリングへの突き出し力の蓄勢と、突き出し力による突き具の突き出しとが係止部及び解除部の位置ずれ分だけ時間差で行われ、育苗トレーの苗が時間差を持って突き出され、移植穴の間隔に合わせて突き出すことが可能となる。
【００２８】
本願発明の請求項３記載の苗移植装置は、育苗トレーを引下げる引下げ機構が蓄勢カムと同期して回転する駆動カムと、駆動カムにより駆動されて育苗トレーを引下げる引下げ具とで構成されるため、引下げ機構の構成が簡潔になる。
【００２９】
本願発明の請求項４記載の苗移植装置は、複数の突き具操作機構により二以上の突き具を同期して操作させ、二以上の突き具により育苗トレーの苗を同時に突き出すことができるようにしたので、二列以上の移植穴に同時に移植することができ、作業性が向上する。
【００３０】
本願発明の請求項５記載の苗移植装置は、機械本体が移植穴をあける穴あけ機構を備えているので、移植穴をあけながらその移植穴に苗を移植することができる。本願発明の請求項６記載の苗移植装置は、機械本体が孔あけ機構を備えていないので、予めあけてある移植穴に苗を移植することができる。
【図面の簡単な説明】
【図１】本発明の苗移植装置により苗を移植する場合の概要説明図。
【図２】本発明の苗移植装置の全体の構成の概略図。
【図３】本発明の苗移植装置の全体説明図。
【図４】（ａ）は本発明の苗移植装置で使用される育苗トレーの平面図、（ｂ）は側面図。
【図５】育苗トレーに苗を育苗した状態の一部切り欠き説明図。
【図６】本発明の苗移植装置における蓄勢カムを位置をずらして回転軸へ取付けた状態の説明図。
【図７】本発明の苗移植装置における蓄勢カムでの蓄勢スプリングへの蓄勢状態の側面説明図。
【図８】本発明の苗移植装置における蓄勢スプリングにより突き具が突き出された状態の側面説明図。
【図９】本発明の苗移植装置におけるトレー引下げ機構の説明図。
【図１０】本発明の苗移植装置におけるトレー引下げ機構の育苗トレー引下げ前の側面説明図。
【図１１】本発明の苗移植装置におけるトレー引下げ機構による育苗トレー引下げ時の側面説明図。
【図１２】（ａ）、（ｂ）は本発明の苗移植装置における排出ガイドの説明図。
【図１３】（ａ）苗を植込み溝に移植する場合の説明図、（ｂ）は苗を移植穴に移植する場合の説明図。
【符号の説明】
１機械本体
２育苗ポット
３育苗トレー
４トレーセット部
５突き具
６突き具操作機構
７落下ガイド
８引下げ機構
１０蓄勢スプリング
１１蓄勢カム
１２蓄勢カムの係止部
１３蓄勢カムの解除部
１４回転軸
１７引下げ具
５５駆動ギア
Ｂ苗
Ｄ移植穴
Ｆ穴あけ装置[0001]
The present invention relates to a seedling transplanting apparatus that can automatically plant leafy seedlings, particularly leek seedlings, one by one in a transplanting hole that has been previously drilled. The present invention also relates to a seedling transplanting device that can also make a transplanting hole prior to seedling transplantation.
[0002]
[Prior art]
Leek is grown by transplanting leek seedlings grown in a seedling tray to the field. In transplanting, the field is cultivated to dig a planting groove A as shown in FIG. 13 (a), and the green onion seedling B taken out from the seedling tray is manually transplanted into the planting groove A, and is planted by covering with soil. However, when the leek seedling B is transplanted into the implantation groove A, the implantation groove A is long in the side, and therefore the leek seedling B may be tilted or fall down in the implantation groove A. For this reason, the leek seedling had to be re-established when covering the soil, and the soil covering work was troublesome. In addition, since transplantation is performed manually, a lot of labor is required, and the work efficiency is poor.
[0003]
Therefore, conventionally, as shown in FIG. 13 (b), a machine (automatic drilling machine) that automatically opens a round transplant hole D in a field has been developed, and a leek seedling B can be transplanted into the round transplant hole D. Has been done. If the leek seedling B is transplanted into the round transplant hole D, the leek seedling B does not tilt or fall down, and it becomes easy to cover the soil. A patent application has been filed for the automatic drilling machine (see, for example, Patent Document 1). There are other types of drilling machines. (For example, refer to Patent Document 2 and Patent Document 3).
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 8-19306 [Patent Document 2]
Japanese Utility Model Publication No. 4-103408 [Patent Document 3]
JP-A-7-107815 [0005]
[Problems to be solved by the invention]
According to the automatic drilling machine disclosed in Japanese Patent Laid-Open No. Hei 8-19306, a round transplanting hole can be made automatically, which is convenient and labor saving. However, transplanting of a leek seedling must still be performed manually one by one. The work was hard work and at the same time the work efficiency was bad.
[0006]
[Means for Solving the Problems]
The present invention automates transplanting of seedlings from a seedling tray into a round transplanting hole, particularly transplanting of leek seedlings, thereby realizing improved work efficiency and labor saving.
[0007]
[Means for Solving the Problems]
The seedling transplanting apparatus according to claim 1 of the present invention is a tray set capable of setting a seedling tray 3 in which seedling pots 2 are formed in rows and columns as shown in FIG. 4 on a machine body 1 (FIG. 3) that can travel. 5, a projecting tool 5 that projects the seedling B grown in the seedling pot 2 as shown in FIG. 5 from below the bottom surface of the seedling pot 2 as shown in FIG. A thruster operating mechanism 6 for projecting B from the seedling pot 2, a drop guide 7 for dropping the seedling B projected from the seedling pot 2 into the transplant hole D with the root down, and a row of seedling pots on the seedling tray 3 When the projecting of the seedling B of 2 is finished, the raising seedling tray 3 is pulled down by one vertical line and is provided with a lowering mechanism 8 (FIG. 2) for setting to the next projecting position. Below the bottom of the seedling tray 3 set in The thruster operating mechanism 6 is provided on each thruster 5, and the individual thrusters 5 move the seedlings in the seedling pot 2 of the seedling tray 3 by the thrust force accumulated by the thruster operating mechanism 6 below the bottom surface. The seedlings B can be protruded separately from each other, and the protruding of the horizontal row of seedlings B and the raising of the seedling tray 3 are repeatedly performed, so that the seedling B is automatically transplanted from the seedling tray 3 into the transplanting hole D. Is.
[0008]
The seedling transplanting apparatus according to claim 2 of the present invention is the seedling transplanting apparatus according to claim 1, wherein each thruster operating mechanism 6 (FIG. 1) stores energy for thrusting the individual thrusters 5. A spring 10 and an accumulation cam 11 for pushing the individual thrusting tool 5 in a direction away from the seedling tray 3 to push the energy accumulation spring 10 to accumulate the force are provided. There are a locking portion 12 to be stopped and a releasing portion 13 to be released from the locking, and the locking portion 12 and the releasing portion 13 of each energy storage cam 11 are in the rotational direction of the energy storage cam 11 as shown in FIG. 7 and is attached to the rotating shaft 14, and as shown in FIG. 7, the locking portions 12 of the respective accumulating cams 11 are engaged with the respective thrusters 5 during rotation to exert a thrust force on the accumulating spring 10. As shown in FIG. 8, the rotation of the accumulating cam 11 is advanced by the rotation of the rotating shaft 14 as shown in FIG. When the removal unit 13 reaches the thrusting tool 5, the energy storage in the energy storage spring 10 is released, and each energy storage spring 10 projects each thrusting tool 5 with a time difference, and the seedling tray 3 is driven by each thrusting tool 5. The seedling B is projected from.
[0009]
The seedling transplanting device according to claim 3 of the present invention is the seedling transplanting device according to claim 2, wherein the pulling mechanism 8 (FIG. 2) rotates in synchronization with the accumulating cam 11; A pulling device 17 is provided which is driven by the pulling cam 16 to pull down the seedling raising tray 3.
[0010]
In the seedling transplanting apparatus according to claim 4 of the present invention, in the seedling transplanting apparatus according to any one of claims 1 to 3, two or more seedlings B on the seedling raising tray 3 can be simultaneously ejected by two or more thrusters 5. As described above, the two or more thrusters 5 are operated in synchronization by the two or more thruster operating mechanisms 6.
[0011]
The seedling transplanting apparatus according to claim 5 of the present invention is the seedling transplanting apparatus according to any one of claims 1 to 4, wherein the machine body 1 (FIG. 3) drills a transplanting hole D (FIG. 2). ) . A seedling transplanting apparatus according to a sixth aspect of the present invention is the seedling transplanting apparatus according to any one of the first to fourth aspects, wherein the machine body 1 (FIG. 3) does not include the drilling mechanism F.
[0012]
[Embodiment]
Embodiments of the seedling transplanting apparatus of the present invention will be described below. In the seedling transplanting apparatus of the present invention, as shown in FIG. 4, a seedling tray 3 in which a large number of seedling pots 2 are formed vertically and horizontally can be set on the tray setting portion 4 of the machine body 1 of FIG. The seedlings B of the seedling pot 2 set in the tray setting unit 4 are projected one by one from the bottom lower side of the seedling pot 2 by the thruster 5 as shown in FIG. It hits the receiving body 20 of the guide 7, and its roots are directed downward by its own weight and fall into the hopper 21 of the drop guide 7. A drop passage 22 is provided below the hopper 21, and an opening / closing tool 23 is provided in the drop passage 22 so that the drop passage 22 is opened and closed at a fixed timing. When the drop passage 22 is closed by the opening / closing tool 23, the seedling B Is temporarily stopped in the fall passage 22 and when the opening / closing tool 23 is opened, the seedling B slides down in the fall passage 22 and a vertical V-shaped discharge guide 24 under the drop passage 22 (FIGS. 1 and 12). It falls vertically and falls into the transplant hole D opened in the soil G. In this case, as shown in FIG. 3, the seedlings B are sequentially projected from the seedling pots 2 in the row of the seedling tray 3 by the thrusting tools 5 arranged in a row in a row, and when the projection from the seedling pots 2 in the row is finished, the lowering tool 17 (FIGS. 2 and 9), the seedling tray 3 is pulled down by one row in the vertical direction, and the next row of seedling pots 2 is set to the protruding position, and the row of seedling pots is inserted at that position by the thruster 5 in the same manner as described above. The seedling can be projected from 2.
Hereinafter, the projecting of the seedling B from the seedling pot 2 -the end of projecting of the seedling B from the lateral seedling pot 2 -the lowering of the seedling tray 3 -the projecting from the lateral seedling pot 2 is repeated. After the seedling B has been partially ejected from one seedling tray 3 or after it has been completed, when the new seedling tray 3 is manually set on the tray set section 4 of the machine body 1, the protrusion It is designed to be performed continuously.
[0013]
The seedling pots 2 of the seedling tray 3 in FIG. 4 are divided into a left side and a right side from the lateral center of the seedling tray 3, and seven are formed on each of the left and right sides. On both outer sides of the right and left seedling pots 2, pull-down locking holes 25 are formed in a vertical row. Further, as shown in FIG. 4B, protrusions 26 projecting from the back surface are provided on the back surfaces of both sides of the seedling tray 3 in the lateral direction. In this embodiment, the seedlings in the left nursery pot 2 and the seedlings in the right nursery pot 2 are protruded one by one at the same time so that the seedlings can be transplanted simultaneously into the two rows of transplant holes D.
[0014]
The machine body 1 of FIG. 3 can be driven by a running tool such as an endless running tool 27 or a wheel (not shown), and is provided with a drilling mechanism F (FIG. 2) for making a transplant hole in the soil during running at the front portion. The transplantation device of the present invention is provided behind it. The transplant device of the present invention can also be installed in a machine body that does not include a drilling device. In the former case, it is possible to transplant the seedling into the transplantation hole with the transplanting device of the present invention while drilling the transplantation hole with one machine, and in the latter case, the seedling with the transplanting device of the present invention into the transplanted hole that has been drilled in advance. Can be transplanted.
[0015]
The tray set unit 4 in FIG. 3 has a side plate 29 raised on both sides in the width direction of the bottom plate 28 and is formed in a dish shape with the upper surface, the upper end, and the lower end opened. When the seedling tray 3 is inserted from the upper end opening 30, the seedling tray 3 is lowered forward and becomes easy to slide downward.
[0016]
As shown in FIG. 7, the thruster 5 is disposed on the lower rear side of the tray set unit 4. The thrust tool 5 can be inserted into the hole 33 in the bottom 32 (FIG. 5) of the seedling pot 2 by making the tip 31 narrow, and the outer periphery of the rear shaft 34 (FIG. 7) is covered with a coiled energy storage spring 10. is there. The accumulator spring 10 rotates when the accumulator cam 11 rotates and the engaging portion (outer peripheral surface) 12 of the accumulator cam 11 is engaged with the engagement receiving portion 38 of the thruster 5, and the thruster 5 moves backward. It is compressed and the thrust is stored. When the rotation of the energy storage cam 11 further proceeds, the locking portion 12 of the energy storage cam 11 is disengaged from the lock receiving portion 38 of the thruster 5 as shown in FIG. 8, and at the same time, the release portion (notch portion) 13 is locked. 38, the energy storage spring 10 is extended, and the thruster 5 is ejected vigorously upward (the seedling tray 3 side) as shown in FIG. 8, and the tip 31 of the thruster 5 is a hole in the bottom 32 of the seedling pot 2 33 is entered and the seedling B in the seedling pot 2 is pushed out. The seedling B jumps out of the seedling pot 2 vigorously.
[0017]
As shown in FIG. 3, the number of the seedling pots 2 in the horizontal row of the seedling tray 3 (14 in total in FIG. 4 is 7 on the left side of the center part and 7 on the right side in FIG. 4) is arranged in the horizontal direction. . All the thrusters 5 have the same shape, and the positions of the thrusters 5 are arranged at the same intervals as the intervals between the seedling pots 2. Since the seedling pot 2 is divided into the left side and the right side of the center part in the horizontal direction of the seedling tray 3, the arrangement of the thrusting tools 5 is also divided into right and left parts by seven as shown in FIG.
[0018]
As shown in FIG. 3, the energy accumulation cams 11 are provided in the same number as the number of the thrusting tools 5, and are set as individual thrusting tools 5. The accumulating cam 11 has a circular shape, and the outer peripheral surface thereof is used as a locking portion 12 that is locked to the locking receiving portion 38 of the thruster 5, and a part of the outer peripheral surface is cut away, so It is the release part 13 which comes off Since the seedling pot 2 of the seedling tray 3 is divided into the left and right sides in the center in the horizontal direction as described above, a large number of energy storage cams 11 fixed to the rotating shaft 14 are also horizontally aligned with the arrangement of the seedling pots 2. The left and right energy storage cams 11 are attached to the rotating shaft 14 in accordance with the interval between the left and right seedling pots 2.
[0019]
As shown in FIG. 6, the plurality of energy storage cams 11 attached to the rotating shaft 14 have the release portions 13 shifted in the circumferential direction by a fixed distance from either the left side or the right side. By shifting the position in this way, when the rotary shaft 14 makes one revolution, all the energy storage cams 11 make one revolution, and during that time, the latch receiving portion 38 of the thruster 5 is pushed by the latching part 12 and the thruster 5 is pushed back, the energy storage spring 10 is compressed, and the thrust force is stored in the energy storage spring 10. When the rotation of the energy storage cam 11 advances and the release portion 13 of the energy storage cam 11 reaches the locking receiving portion 38 of the thruster 5, the energy storage of the energy storage spring 10 is released and at the same time the energy is accumulated until then. The pusher 5 is pushed out by the pushing force that has been pushed, and the seedling B in the seedling pot 2 of the seedling tray 3 is pushed out. In this case, since the position of the release portion 13 of the energy storage cam 11 attached to the rotating shaft 14 is shifted, the energy storage of each energy storage spring 10 is released with a time difference corresponding to the position shift. The thrust tool 5 is projected at the time difference, and the seedlings B are sequentially projected one by one. In this case, the left and right energy storage cams 11 attached to the rotating shaft 14 are synchronized with each other and displaced so that the seedlings of the right and left seedling pots 2 are transferred by the two left and right energy storage cams 11 synchronized. B is protruded at the same time, and two seedlings B (one on each of the left and right sides) jump out at the same time, so that the seedlings B can be transplanted simultaneously into two transplanting holes D opened in two rows in parallel.
[0020]
The drop guide 7 shown in FIG. 1 is composed of a receiving body 20 against which the seedling B that has been pushed out and abuts, a hopper 21 that narrows below, a drop passage 22, and a discharge guide 24. The hopper 21 receives the seedling B that is received by the receiving body 20 and has its roots fall under its own weight. The falling passage 22 is a passage through which the seedling in the hopper 21 falls, and the discharge guide 24 falls. The seedling B falling through the passage 22 is guided vertically to the transplant hole D of the soil G. An opening / closing tool 23 is disposed above the drop passage 22. The opening / closing tool 23 periodically opens and closes the inside of the drop passage 22, temporarily stops the seedling B when it is closed, and drops the seedling B when it is opened. An opening / closing tool operating mechanism 40 for opening / closing the opening / closing tool 23 is connected to the opening / closing tool 23.
[0021]
The opening / closing tool 23 is formed in a downward V-shape as shown in FIG. 1 and is rotatably attached by a shaft 41. In the opening / closing tool operating mechanism 40, an arm 42 is rotatably connected to a lower outer end portion of the opening / closing tool 23 by a pin 43, and a rotatable eccentric cam 44 is disposed outside the arm 42. When the eccentric cam 44 rotates and the outer peripheral projection 45 of the cam 44 comes into contact with the arm 42, the arm 42 is pushed toward the opening / closing tool 23, and the opening / closing tool 23 moves upward with the shaft 41 as the center axis (left side in FIG. 1). ), The opening / closing tool 23 closes the inside of the drop passage 22, and when the outer peripheral flat surface 46 of the eccentric cam 44 contacts the arm 42, the arm 42 is pulled back to the spring 47, and the opening / closing tool 23 has the shaft 41 as the central axis. Swinging downward (right side in FIG. 1), the opening / closing tool 23 closes the inside of the drop passage 22. This opening / closing operation is repeated each time the eccentric cam 44 makes one rotation. In this case, the rotation of the eccentric cam 44 is set so that the opening / closing tool 23 opens and closes the inside of the drop passage 22 every time the seedling B is projected.
[0022]
FIGS. 9 to 11 show a pulling mechanism 8 (FIG. 2) for pulling down the seedling tray 2 by one vertical line. As shown in FIG. 9, the lowering mechanism 8 includes a lowering cam 16 attached to one end of a rotating shaft 14 to which a large number of accumulating cams 11 are attached, a bracket 50 fixed to the machine body 1, and an arrow on the bracket 50. A slide arm 51 which is attached so as to be able to reciprocate in the ab direction, a return spring 52 which always pulls the slide arm 51 to the left in FIG. 9, and a slide arm 51 which is attached to the slide arm 51 in the same direction as it. And a driving gear 55 attached to the rotary shaft 54, and a lowering tool (for example, a gear) 17 attached to the rotary shaft 54 and locked to the lowering locking hole 25 of the seedling tray 3. It has. A stopper 56 is formed at the tip of the slide arm 51, and it is locked to the claw of the drive gear 55 as shown in FIG.
[0023]
Each time the pull-down cam 16 makes one rotation, the pull-down mechanism 8 pushes the rear end surface of the slide arm 51 in the direction of the arrow as shown in FIG. 11 by the projection 57 of the pull-down cam 16, and the slide arm 51 moves in the same direction ( Slide). As a result, the stopper 56 is disengaged from the claw of the drive gear 55 and the drive gear 55 can be rotated. At this time, since the push claw 53 slides simultaneously with the slide of the slide arm 51, the drive gear 55 is rotated by one claw by the push claw 53. The rotation shaft 54 to which the drive gear 55 is attached is rotated by the rotation of the drive gear 55, and the lowering tool 17 attached to the rotation shaft 54 is rotated by one nail by the rotation, and the seedling tray 3 is rotated by the rotation. The pull-down locking hole 25 is pulled down by one hole (a row of seedling pots). When the pull-down cam 16 further rotates, the projection 57 of the cam 16 is released from the rear end surface of the slide arm 51 and the pushing by the projection 57 is released. At that time, the slide arm 51 is pulled back by the return spring 52, the push claw 53 is also pulled back, and the push claw 53 is locked to the claw just before the drive gear 55. At the same time, the stopper 56 at the tip of the slide arm 51 is engaged with the claw of the drive gear 55 to restrict the rotation of the drive gear 55.
[0024]
In order to transplant the seedling B in the seedling pot 2 of the seedling tray 3 using the seedling transplanting apparatus of the present invention into the transplanting hole of the soil, it is performed as follows. In this description, the seedling B is a leek seedling, but the seedling that can be transplanted in the present invention is not limited to a leek seedling.
(1) Set the seedling raising tray 3 on which the seedling B is raised as shown in FIG. With this set, any one of the nails of the lowering tool 17 enters the lowering locking hole 25 of the seedling tray 3 as shown in FIG.
(2) The machine body 1 is caused to travel by driving a power source such as an engine. At this time, the machine body 1 travels across the heel to be transplanted.
(3) The rotation shaft 14 (FIG. 7) of the seedling transplanting device is rotated by operating the start switch of the machine body 1, and the energy accumulation cam 11 and the pull-down cam 16 (FIG. 9) attached to the rotation shaft 14 are rotated. Let
(4) With the rotation of the energy storage cam 11, as shown in FIG. 7, the engaging portion 12 of the energy storage cam 11 is engaged with the engagement receiving portion 38 of the protrusion 5 to retract the protrusion 5 and compress the spring 10. Thus, the restoring force (protruding force) is stored in the spring 10.
(5) When the rotation of the rotating shaft 14 advances and the rotation of the energy storage cam 11 advances, the locking portion 12 of the energy storage cam 11 is disengaged from the locking receiving portion 38 of the thruster 5 as shown in FIG. And the thrusting force 5 is suddenly projected toward the seedling tray 3 by the projecting force and enters the hole 33 in the bottom 32 of the seedling pot 2 to project the seedling B in the seedling pot 2.
(6) The seedling B protruding from the seedling pot 2 hits the receiver 20 arranged at the tip of the seedling tray 3 as shown in FIG.
(7) The fallen seedling B enters the hopper 21 arranged under the receiver 20, slides down the drop passage 22 of the hopper 21, hits the opening / closing tool 23 in the drop passage 22, and temporarily stops. The seedling slides down when the opening / closing tool 23 is opened, is guided downward by the discharge guide 24, and falls vertically into the transplant hole D formed in the soil (gutter) G.
(8) When the rotary shaft 14 rotates, the operations (4) to (7) are sequentially performed by the energy accumulation cam 11.
(9) When transplanting of the seedling B in the horizontal seedling pot 2 is completed, the pull-down cam 16 in FIG. 9 makes one rotation to move the slide arm 51. At this time, since the locking of the drive gear 55 by the stopper 56 of the slide arm 51 is released, the push claw 53 also moves in the same direction as the slide arm 51 slides, so that the drive gear 55 is pushed by the push claw 53. And the rotation shaft 54 is rotated accordingly, the pulling gear 17 is rotated by one nail, and the seedling tray 3 is pulled down by one vertical row (one hole).
(10) The raised seedling tray 3 is sent downward along the tray guide 60 as shown in FIG. At this time, since the seedling raising tray 3 is made of resin, it curves along the curve of the tray guide 60.
(11) When the above operations (4) to (10) are repeatedly performed and the transplanting of the seedling B in one seedling tray 3 progresses to the middle, or when the transplanting of the seedling in the seedling tray 3 is completed, a new seedling tray 3 is set in the tray setting unit 4 so that the seedling B of the next seedling tray 3 is automatically transplanted when the transplanting of the previous seedling tray 3 is completed. The transplanted seedling tray 3 is repeatedly pulled down every time the drive gear 55 rotates once, and the seedling tray 3 is discharged from the tray guide 60.
[0025]
The said action is a case where seedlings are projected one by one from the seedling pot, but when the seedling pot is formed separately from the left and right sides from the center in the width direction of the seedling tray 3 as shown in FIG. Seedlings can be simultaneously ejected from one seedling pot (two seedling pots in total) and transplanted into two rows of transplanting holes at a time. In this case, the receiver 20, the hopper 21, the drop passage 22, and the discharge guide 24 in FIG. 1 are arranged side by side.
[0026]
【The invention's effect】
The seedling transplanting apparatus according to claim 1 of the present invention has the following effects.
1. If the seedling tray is set in the tray set section and the machine body is run and the thruster is operated by the thruster operating mechanism, the seedlings in the seedling tray are automatically transplanted into the transplanting hole, so that the work efficiency is improved and drastically improved. Labor saving is possible.
2. Since the seedling tray with no seedlings is automatically sent out, it is not necessary to discharge the seedling trays one by one, and the transplanting operation is easy.
3. Since the thrust force is automatically stored in the thruster by the thruster operating mechanism, seedlings can be automatically transplanted sequentially with a number of thrusters.
[0027]
The seedling transplanting apparatus according to claim 2 of the present invention has the following effects.
1. Since the thruster operating mechanism is composed of an energy storage spring that stores the thrust force to each thruster, and an energy storage cam that operates each thruster to store the thrust force. The configuration is concise.
2. Each energy storage cam is provided with a locking portion that locks the thruster and a release portion that releases the locking, and the locking portion and the release portion of each energy storage cam are arranged in the rotation direction of the energy storage cam. Since the position is shifted and attached to the rotating shaft, the accumulation of the pushing force to the accumulating spring by the rotation of the rotating shaft and the pushing of the pushing tool due to the pushing force are time differences by the amount of displacement of the locking part and the releasing part. This is done, and the seedlings in the nursery tray are ejected with a time lag and can be ejected according to the interval between transplant holes.
[0028]
The seedling transplanting apparatus according to claim 3 of the present invention is composed of a drive cam in which a pulling-down mechanism for pulling down the seedling tray rotates in synchronization with the accumulating cam, and a pulling-down tool driven by the driving cam to pull down the seedling tray. Therefore, the configuration of the lowering mechanism is simplified.
[0029]
In the seedling transplanting apparatus according to claim 4 of the present invention, two or more thrusters are operated in synchronization by a plurality of thruster operating mechanisms, and the seedlings on the seedling raising tray can be ejected simultaneously by the two or more thrusters. Therefore, it can be transplanted simultaneously into two or more transplant holes, and the workability is improved.
[0030]
In the seedling transplanting apparatus according to claim 5 of the present invention, since the machine body is provided with a drilling mechanism for making a transplanting hole, the seedling can be transplanted into the transplanting hole while the transplanting hole is made. In the seedling transplanting apparatus according to claim 6 of the present invention, since the machine main body is not provided with a drilling mechanism, the seedling can be transplanted into a transplant hole that has been drilled in advance.
[Brief description of the drawings]
FIG. 1 is a schematic explanatory diagram in the case of transplanting seedlings with the seedling transplanting apparatus of the present invention.
FIG. 2 is a schematic view of the overall configuration of the seedling transplanting apparatus of the present invention.
FIG. 3 is an overall explanatory view of the seedling transplanting apparatus of the present invention.
4A is a plan view of a seedling tray used in the seedling transplanting apparatus of the present invention, and FIG. 4B is a side view.
FIG. 5 is a partially cutaway explanatory view of a state where seedlings are grown on a seedling tray.
FIG. 6 is an explanatory view showing a state in which the energy storage cam in the seedling transplanting apparatus of the present invention is attached to the rotating shaft while shifting its position.
FIG. 7 is an explanatory side view of a stored state of a storage spring with a storage cam in the seedling transplanting apparatus of the present invention.
FIG. 8 is an explanatory side view showing a state in which a thrusting tool is projected by an energy storage spring in the seedling transplanting apparatus of the present invention.
FIG. 9 is an explanatory view of a tray lowering mechanism in the seedling transplanting apparatus of the present invention.
FIG. 10 is a side explanatory view of the tray lowering mechanism of the present invention before the raising seedling tray is lowered.
FIG. 11 is a side explanatory view when raising the seedling tray by the tray lowering mechanism in the seedling transplanting apparatus of the present invention.
12A and 12B are explanatory views of a discharge guide in the seedling transplanting apparatus of the present invention.
13A is an explanatory diagram when a seedling is transplanted into the implantation groove, and FIG. 13B is an explanatory diagram when the seedling is transplanted into the transplanting hole.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Machine main body 2 Seedling pot 3 Seedling tray 4 Tray set part 5 Thing tool 6 Thing tool operation mechanism 7 Drop guide 8 Pull-down mechanism 10 Energy storage spring 11 Energy storage cam 12 Energy storage cam locking part 13 Energy storage cam release part 14 Rotating shaft 17 Pulling tool 55 Drive gear B Seedling D Transplanting hole F Drilling device

Claims

A tray set part (4) capable of setting a seedling tray (3) in which seedling pots (2) are formed in columns and rows are set on a machine body (1) capable of traveling, and the seedlings are grown in a seedling pot (2). The thruster (5) that projects the seedling (B) from below the bottom of the seedling pot (2) and the thruster (5) are operated to project the seedling (B) from the seedling tray (2). A thruster operating mechanism (6), a drop guide (7) for dropping the seedling (B) protruding from the seedling pot (2) into the transplant hole (D) with the root down, and the side of the seedling tray (3) A pulling mechanism (8) for lowering the seedling tray (3) by one vertical line when the seedling (B) of the seedling pot (2) in one row is finished, and setting the thrusting tool (5) Is placed under the bottom of the seedling tray (3) set in the tray set section (4). The thruster operating mechanism (6) is provided on each thruster (5), and the individual thrusters (5) are raised by the thrusting force accumulated by the thruster operating mechanism (6). The seedling (B) of the nursery pot (2) can be individually protruded from below the bottom, and the protruding of the horizontal row of seedlings (B) and the raising of the seedling tray (3) are repeatedly performed, A seedling transplanting device, wherein the transplanting of the seedling (B) into the transplanting hole (D) from (3) is automatically performed.

The seedling transplanting device according to claim 1, wherein each thruster operating mechanism (6) includes an energy storage spring (10) for storing a thrusting force on each thruster (5) and each thruster (5). And a storage cam (11) that pushes the storage spring (10) in a direction away from the seedling tray (3) and stores a thrust force to the storage spring (10). It has a locking part (12) for locking and a releasing part (13) for releasing the locking, and the locking part (12) and the releasing part (13) of each energy storage cam (11) are stored. The biasing cam (11) is attached to the rotating shaft (14) while being displaced in the rotational direction, and the locking portion (12) of each of the energy storage cams (11) is engaged with the respective thruster (5) during rotation. The thrust is accumulated in the energy storage spring (10), and the rotation of the energy storage cam (11) is caused by the rotation of the rotating shaft (14). When the release portion (13) reaches the thruster (5), the energy stored in the energy storage spring (10) is released, and each energy storage spring (10) moves each thruster (5) with a time difference. A seedling transplanting device characterized in that the seedling (B) is projected from the nursery tray (3) by the projecting tool (5).

The seedling transplanting device according to claim 2, wherein the lowering mechanism (8) is driven by the lowering cam (16) rotating in synchronism with the accumulating cam (11) and the lowering cam (16) to move the raising seedling tray (3). A seedling transplanting device comprising a lowering tool (17) for lowering.

The seedling transplanting apparatus according to any one of claims 1 to 3, wherein two or more protrusions are provided so that two or more seedlings (B) of the seedling tray (3) can be simultaneously protruded by two or more protrusions (5). A seedling transplanting device, wherein two or more thrusters (5) are operated synchronously by a tool operating mechanism (6).

The seedling transplanting apparatus according to any one of claims 1 to 4, wherein the machine body (1) is provided with a drilling mechanism (F) for opening a transplanting hole (D). .

The seedling transplanting device according to any one of claims 1 to 4, wherein the machine main body (1) does not include a drilling mechanism (F) for drilling a transplanting hole (D). .