JP2005006506A

JP2005006506A - Vegetable transplanter

Info

Publication number: JP2005006506A
Application number: JP2003170920A
Authority: JP
Inventors: Kiyohiro Morikawa; 清博森川; Itsuhito Yasumoto; 逸人安本
Original assignee: Seirei Industry Co Ltd
Current assignee: Yanmar Agribusiness Co Ltd
Priority date: 2003-06-16
Filing date: 2003-06-16
Publication date: 2005-01-13
Anticipated expiration: 2023-06-16
Also published as: JP4157431B2

Abstract

PROBLEM TO BE SOLVED: To stand seedlings 26 planted with each of transplanting claws 51 and 51 so as to face the seedlings 26 in the gravity direction by compacting the ground surface near the left and the right sides of rows of the seedlings 26 planted with the transplanting claws 51 and 51 in a horizontal state toward the gravity direction in the horizontal peripheral surface of each soil covering wheel 22. SOLUTION: A vegetable transplanter is designed to simultaneously plant the seedlings 26 in the plurality of rows side by side in the ground surface, cover the plant feet of the seedlings 26 thus planted for each row with a set of soil covering wheels 22A and 22A composed of the pair of left and right soil covering wheels 22 and simultaneously compact soil on each of the left and the right sides of the plant feet. The vegetable transplanter is composed so as to support the set of the soil covering wheels 22A and 22A through a parallel link mechanism 82 on a machine body frame 2b. COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、地面（畦上面）に苗を植え付けて覆土輪で該苗に覆土するように作動する野菜移植機に関する。
【０００２】
【従来の技術】
左右方向で隣接した複数条の苗を移植爪で同時並行的に畦上面に受け付けると共に、このように植え付けられた各条ごとの苗の株元の左右近傍の地面を左右一対の覆土輪からなる覆土輪組で鎮圧して該苗に覆土するものとなされた野菜移植機は存在している。
上記野菜移植機では、左右配置された前記覆土輪組のそれぞれがエンジンなどと同体の機体フレームに対し前後向き軸回りの特定方向へ上下変位するものとなされている（例えば特許文献１参照）。
【０００３】
【特許文献１】
特開２００１−２１１７１３公報（段落番号００１３、図４、図９、図１０、図１１）
【０００４】
【発明が解決しようとする課題】
上記したような従来の野菜移植機では、前記機体フレームと地面との平行度が損なわれて相対的に横傾斜されたとき、前記覆土輪組のそれぞれの接地圧や鎮圧方向が比較的大きく変化して、正確な移植が行えないことがある。
本発明は斯かる問題点を解消することのできる野菜移植機を提供することを目的とする。
【０００５】
【課題を解決するための手段】
上記目的を達成するため、請求項１記載の発明は、複数条の苗を同時並行的に地面に植え付けると共に、このように植え付けられた各条ごとの苗の株元の左右各側の地面を左右一対の覆土輪からなる覆土輪組で鎮圧して該株元に覆土するものとなされた野菜移植機において、前記覆土輪組を平行リンク機構を介して支持させたことを特徴としている。
これによれば、機体フレームと地面との相対的な横傾斜変化が生じて、各覆土輪組の存在位置での地面から機体フレームまでの高さが変化したときにも、前記平行リンク機構が機体フレームに対する各覆土輪組の高さを変化させて、各覆土輪組をこれの起立方向を変化させることなく地面に比較的均等な圧力で接地させると共に、各覆土輪組はこれの覆土する苗の周囲近傍の左右各側のうち高い側を大きく沈下させるように鎮圧して苗の左右の地面を水平面化させるのであり、これにより苗の均一な植付状態が得られる上に各苗は重力方向の直立状態に植え付けられるものとなる。
【０００６】
また請求項２記載の発明は、複数条の苗を同時並行的に地面に植え付けると共に、このように植え付けられた各条ごとの苗の株元の左右各側の地面を左右一対の覆土輪からなる覆土輪組で鎮圧して該株元に覆土するものとなされた野菜移植機において、機体フレームに左右方向起立面に沿って揺動変形する平行リンク機構を装設し、該平行リンク機構の左右端下部に前記覆土輪を支持させたことを特徴としている。
これによれば、請求項１記載の発明と同様な作用が得られるほかに次のような作用が得られるのであって、即ち、覆土輪の支持構造がコンパクトとなり、また前記並行リンク機構が地面に植え付けられた苗と干渉し難いものとなり、また前記並行リンク機構及び前記覆土輪が既存の野菜移植機に装設され易いものとなる。
【０００７】
また請求項３記載の発明は、複数条の苗を同時並行的に地面に植え付けると共に、このように植え付けられた各条ごとの苗の株元の左右各側の地面を左右一対の覆土輪からなる覆土輪組で鎮圧して該株元に覆土するものとなされた野菜移植機において、機体フレームに平行リンク機構を形成すると共に、該平行リンク機構に前記左右一対の覆土輪からなる覆土輪組を逆Ｕ字形アーム部材を介して支持させたことを特徴としている。
これによれば、請求項１記載の発明と同様な作用が得られるほかに次のような作用が得られるのであって、即ち、複数条の苗の条間隔を変更するときに各条に対応した前記覆土輪組の左右間隔を変更することが必要であるが、このとき左右一対の覆土輪を逆Ｕ字形アーム部材に装着した組立品を位置変更することで足りるものとなる。また前記逆Ｕ字形アーム部材は前記左右一対の覆土輪の間を通過する苗と干渉し難いものとなる。
【０００８】
この発明は次のように具体化するのがよいのであって、即ち、請求項４に記載したように、前記逆Ｕ字形アーム部材の各アーム端に一つの前記覆土輪を左右方向の位置調整可能に支持させる。これによれば、請求項３記載の発明と同様な作用が得られるほかに次のような作用が得られるのであって、即ち、各条の苗に前記覆土輪組の各覆土輪の左右位置を位置合わせするとき、左右の各覆土輪がこれの対応する条に対する左右方向の最適位置に位置合わせされて、該条の苗の株元の左右各側の地面の適当な位置を水平面状に鎮圧して該苗に覆土するものとなる。
【０００９】
また請求項５記載の発明は、複数条の苗を同時並行的に地面に植え付けると共に、このように植え付けられた各条ごとの苗の株元の左右各側の地面を左右一対の覆土輪からなる覆土輪組で鎮圧して該株元に覆土するものとなされた野菜移植機において、機体フレームに左右方向起立面に沿って揺動変形する平行リンク機構を形成し、該平行リンク機構に前記覆土輪を左右方向の位置変更調整可能に支持させたことを特徴としている。
これによれば、請求項１記載の発明と同様な作用が得られるほかに次のような作用が得られるのであって、即ち、移植爪で植え付けられる複数条の苗の条間隔を比較的大きく変更するとき、前記した各覆土輪組はこれの対応する条に対する左右方向の最適位置に位置合わせされて、該対応する条の苗の株元の左右各側の地面の適当な位置を水平面状に鎮圧して該苗に覆土するものとなる。
【００１０】
また請求項６記載の発明は、複数条の苗を同時並行的に地面に植え付けると共に、このように植え付けられた各条ごとの苗の株元の左右各側の地面を左右一対の覆土輪からなる覆土輪組で鎮圧して該株元に覆土するものとなされた野菜移植機において、前記覆土輪を支持するための平行リンク機構を形成し、該平行リンク機構は機体フレームに対し前後位置調整可能となされていることを特徴としている。
これによれば、請求項１記載の発明と同様な作用が得られるほかに次のような作用が得られるのであって、即ち、地面に植え付けられた苗に対する前記覆土輪組の前後位置が最適状態に調整され、しかも該調整が前記機体フレームに対し平行リンク機構を位置変化させることで行われるのであり、それぞれの前記覆土輪は位置変化させる必要のないものとなる。
【００１１】
また請求項７記載の発明は、左右方向で隣接した２条の苗を同時並行的に地面上に植え付けると共に、このように植え付けられた各条ごとの苗の株元の左右各側の地面を左右一対の覆土輪で鎮圧して該株元に覆土するものとなされた野菜移植機において、機体フレームに上下変位可能に装設された覆土輪フレームに中間支持片を前後位置調整可能に装着し、該中間支持片に前記覆土輪を支持するための平行リンク機構を装設したことを特徴としている。
これによれば、請求項１記載の発明と同様な作用が得られるほかに次のような作用が得られるのであって、即ち、単一の前記覆土輪フレームが全ての覆土輪を機体に対する特定方向へ同時に上下変位させるものとなり、また前記中間支持片の前後位置を変更することにより、地面に植え付けられた苗に対する前記覆土輪組の前後位置が最適に調整されるものとなる。
【００１２】
また請求項８記載の発明は、左右方向で隣接した２条の苗を同時並行的に地面上に植え付けると共に、このように植え付けられた各条ごとの苗の株元の左右各側の地面を左右一対の覆土輪で鎮圧して該株元に覆土するものとなされた野菜移植機において、機体フレームに上下変位可能に装設された覆土輪フレームに中間支持片を前後位置調整可能に装着し、該中間支持片に前記覆土輪を支持するための平行リンク機構の左右向きリンク部材の長さ中央個所を前後向き軸回りの揺動可能に支持させたことを特徴としている。
これによれば、請求項７記載の発明と同様な作用が得られるほかに次のような作用が得られるのであって、即ち、前記覆土輪組は前記前後向き軸を対称軸として逆対称に上下変位して、左右方向で隣接した２条の苗の株元の左右各側の地面の適当な位置を前記覆土輪組の高さの大小に拘わらず水平面状に鎮圧して該苗に覆土するものとなる。
【００１３】
この発明は次のように具体化するのがよいのであって、即ち、請求項９に記載したように、前記中間支持片に前記左右向きリンク部材の揺動を一定範囲内に規制するための係止部を形成する。これによれば、請求項８記載の発明と同様な作用が得られるほかに次のような作用が得られるのであって、即ち、前記覆土輪組は簡易な機構により必要以上に上下変位しないものとなる。
【００１４】
また請求項１０記載の発明は、左右方向で隣接した２条の苗を同時並行的に地面上に植え付けると共に、このように植え付けられた各条ごとの苗の株元の左右各側の地面を左右一対の覆土輪で鎮圧して該株元に覆土するものとなされた野菜移植機において、機体フレームに上下変位可能に装設されている覆土輪フレームに、上下配置された複数の左右向きリンク部材のそれぞれの長さ中央個所を前後向き軸回りの揺動可能に枢着し、これら複数の左右向きリンク部材の左右各側に前記左右一対の覆土輪を支持するための上下向きリンク部材を装着したことを特徴としている。
これによれば、前記複数の左右向きリンク部材及び前記支持片（上下向きリンク部材）が平行リンク機構を形成するものとなって、請求項１記載の発明と同様な作用が得られるのであり、また単一の前記覆土輪フレームが同時に全ての覆土輪を機体に対する特定方向へ上下変位させるものとなり、また前記覆土輪組は前記前後向き軸を対称軸として逆対称に上下変位して、左右方向で隣接した２条の苗の株元の左右各側の地面の適当な位置を水平面状に鎮圧して該苗に覆土するものとなる。
【００１５】
また請求項１１記載の発明は、左右方向で隣接した２条の苗を同時並行的に地面上に植え付けると共に、このように植え付けられた各条ごとの苗の株元の左右各側の地面を左右一対の覆土輪で鎮圧して該株元に覆土するものとなされた野菜移植機において、機体フレームに上下変位可能に装設された覆土輪フレームに、上下配置された複数の左右向きリンク部材のそれぞれの長さ中央個所を前後向き軸回りの揺動可能に枢着すると共に、これら左右向きリンク部材の左右各側でこれらの端部同士を左右一対の覆土輪の装着された上下向きリンク部材で連結し、該上下向きリンク部材のそれぞれは前記左右向きリンク部材に左右方向の位置変更可能に装着されていることを特徴としている。
これによれば、請求項１０記載の発明と同様な作用が得られるほかに次のような作用が得られるのであって、即ち、前記覆土輪組は前記上下向きリンク部材の位置変更によりその左右位置を最適状態に変更されるものとなる。
【００１６】
【発明の実施の形態】
次に、発明の実施の形態を説明する。図１は本発明の一実施例に係る歩行型野菜移植機の全体的な構成を示した側面図、図２は同じく平面図、図３は機体フレームとミッションケース部分の側面図、図４は機体フレーム部分の平面図、図５は苗供給部の平面図、図６は受継部の後面断面図、図７は同じく平面図、図８は移植部の後面図、図９は同じく側面図、図１０は同じく平面図、図１１は移植爪の側面断面図、図１２は鎮圧輪支持部の側面図、図１３は鎮圧輪部分の後面図、図１４は鎮圧輪支持部の拡大側面図、図１５は図１４の一部を示す拡大図、図１６は鎮圧輪部分の拡大後面図、図１７は図１６の一部を示す拡大図である。
【００１７】
本発明の一実施例に係る玉葱用の歩行型の野菜移植機について先ずその全体構成を説明する。
図１、図２において、野菜移植機１は、機体フレーム２の前部上にエンジン３を載置し、前後中央部上にミッションケース４を配置し、機体フレーム２後上部から後方にハンドルフレーム６を水平状に延設して、該ハンドルフレーム６の中途部上に苗供給部７を配置し、ハンドルフレーム６後部を運転操作部９としている。
【００１８】
前記機体フレーム２の前部には前輪支持軸１０を横架し、該前輪支持軸１０の両側に前輪支持アーム１１、１１のー端を取り付け、該前輪支持アーム１１、１１の他端に前輪１２、１２を軸着している。
またミッションケース４の左右側面より後輪駆動軸１５を水平方向側方に突出し、該後輪駆動軸１５の両側に駆動ケース１６、１６を連設して、該駆動ケース１６、１６の後部に後輪１７、１７を軸着している。そして、前輪支持アーム１１と駆動ケース１６はリンク機構１８を介して連結されるとともに、機体フレーム２下部に設けた油圧シリンダ１９とこれと連動されるリンク機構１８を介して駆動ケース１６が連結され、該油圧シリンダ１９を伸縮させることにより前輪支持アーム１１と駆動ケース１６が前輪支持軸１０及び後輪駆動軸１５を中心に回動されて、機体フレーム２を昇降可能としている。
【００１９】
そしてミッションケース４の後部であって図４に示す後フレーム２ｂ、２ｂの間の苗供給部７の下方に移植部２０が配置され、後フレーム２ｂ、２ｂで保護されるとともに、該移植部２０は移植爪５１を昇降して、その移動軌跡の上端位置で苗供給部７より苗２６を受け取り、前記移動軌跡の下端位置で移植爪５１が畦上面に突き刺さって作穴した後、該移植爪５１を開いて畦２５上に苗２６を落下させて、その後方に配置した覆土輪２２により苗２６の株元に土を寄せて覆土し移植する構成としている。
【００２０】
次に各部の構成を説明する。
まず、走行部及び植付け部を支えるシャーシから説明する。図３、図４に示すように、シャーシは機体フレーム２と、該機体フレーム２に連設するミツションケース４と、該ミッションケース４と機体フレーム２を連結するハンドルフレーム６から構成されている。
【００２１】
前記機体フレーム２は側面視略逆「へ」字状に構成してあって、前フレーム２ａと後フレーム２ｂとを備えてこれらを略前後中央部で連結し、該前フレーム２ａをプレート状に構成してその前部上にエンジン３を載置固定し、後部上にミツションケース４を載置固定している。前記後フレーム２ｂは前フレーム２ａの後端に固定された横フレーム２ｄ１、２ｄ２の左右方向外端部より後方へ延設した２本のパイプからなる。横フレーム２ｄ１の左右方向内端部より後方へ向けて中フレーム２ｅを延出させ、該中フレーム２ｅの長さ途中部位から中柱２ｅ１を立設している。またミッションケース４下部に後輪駆動軸１５を左右水平状に支持している。
【００２２】
そして、前フレーム２ａの前後方向の左右中心線を走行部（機体）の中心線として、左右一側（本実施例では進行方向左側）に偏位して後輪駆動軸１５が側方に延設されて、野菜移植機１が畦２５を跨いで走行するときに、走行部が左右一側に偏位して走行し、後述するように往路と復路で左右一側２列ずつ（往路で１条目と２条目を、復路で３条目と４条目を）移植できるようにしている。なお、左右の前輪１２、１２と後輪１７、１７は畦２５の形状や幅等に合わせて左右位置（車幅）を調整できるようにしている。
【００２３】
そして、図２、図３に示すように、前記後フレーム２ｂの後部上及び中柱２ｅ１上部にハンドルフレーム６の前部が連結され、該ハンドルフレーム６の前部をミッションケ−ス４上部と連結し、前後中途部上に苗供給部７と左右の苗載台３１、３１を支持し、後部に昇降レバー３２や主クラッチレバー３３のほか作業レバー、アクセルレバー、サイドクラッチレバー及び高さ調節レバー等の操作レバーを配置している。
【００２４】
前記ハンドルフレーム６は平面視「Ｅ状」に右フレーム６Ｒと中フレーム６Ｍと左フレーム６Ｌから構成し、右フレーム６Ｒと中フレーム６Ｍの前部間にミッションケース４を支持固定し、前後中途部間に連結プレート３４を架設して、該連結プレート３４の下面に前記右側の後フレーム２ｂ後端上部が固設される。該連結プレート３４下部には苗供給部７の駆動ケースが付設される。
【００２５】
また中フレーム６Ｍの前部には前記中柱２ｅ１上端が連結固定される。このようにして、右フレーム６Ｒと中フレーム６Ｍと左フレーム６Ｌの間で連結固定することで剛性をアップしている。
また、右フレーム６Ｒの前後中途部より苗載台フレーム３５が外側方に突設されて苗載台３１を機体右側に取り付け、左フレーム６Ｌより苗載台フレーム３６を外側方に突設して苗載台３１を機体左側に取り付けている。また必要に応じて、右フレーム６Ｒ及び左フレーム６Ｌの前部より２本の苗載せ台フレーム３８ａを前方に突設して苗載せ台３８を左右の後輪１７、１７間中央に取り付けている。
【００２６】
本実施例では、機体右側のハンドルフレーム６側部の後輪１７後方（苗供給部７の右斜め後方）に主作業者２３が位置し、機体左側のハンドルフレーム６側部の後輸１７後方（苗供給部７の左斜め後方）に補助作業者２４が位置し、また一人作業の場合は機体右側のみ位置するのであり、そして主作業者２３は前記操作レバーを操作するとともに、苗載台３１から苗２６を取り、苗供給部７の各苗搬送ポット４０に一つずつ（あるいは所定数ずつ）苗２６を挿入していく。補助作業者２４は主作業者２３が苗搬送ポット４０に挿入できなかった苗搬送ポット４０に苗２６を挿入して補完する。なお、左側の後輪１７が畦２５の幅に関連して左右側へ移動されたときは補助作業者２４もそれに伴って左右へ寄るようにする。
【００２７】
次に苗供給部７について図２、図５、図６、図７より説明する。
図２に示すように、前記左フレーム６Ｌの中途部より補助作業者２４側（機体中心と反対側）へ平面視コ字状の支持フレーム３７が水平側方へ突設され、該支持フレーム３７とハンドルフレーム６の前後中途部上に、板体を横向き長円形（長リング形）になした苗搬送台３９が略水平に固設されている。
【００２８】
そして、図２、図５に示すように、駆動スプロケット４１が前記連結プレート３４上に固定された縦向き支持軸４１ａを介して、また従動スプロケット４２が支持フレーム３７上に固定された縦向き支持軸４２ａを介してそれぞれ回転自在に支持されており、これら駆動スプロケット４１と従動スプロケット４２とにチェーン状に連結した苗搬送ポット４０連が巻回されている。駆動スプロケット４１は縦向き支持軸４１ａに回転自在に外嵌された駆動筒部材４１ｂと結合されており、該駆動筒部材４１ｂには前記ミッションケース４よりチェーン等の伝動機構を介して動力が伝達される。
【００２９】
こうして、苗搬送台３９が機体中心から偏位した車輪（前輪１２、後輪１７）側へ延設されることで、苗供給部７が畦２５を跨ぐように配設されて、二条植の場合、四条の植付け巾を跨ぐようになり、畦２５の両側に位置する主作業者２３と補助作業者２４の両者が苗供給部７に対面して苗載台３１に載せられた方形状の一般苗箱内に収容された苗２６を取って苗搬送ポット４０に供給できるようにしている。
ここで使用される一般苗箱は上面を開放され合成樹脂材で一体成形された方形状のもので内方に玉葱などの苗２６を横向きとなされて収容されるものである。
【００３０】
前記苗搬送ポット４０は、図６、図７に示すように、筒体の上部を拡開した漏斗状に構成し、上方より苗２６を挿入し易い形状としている。苗搬送ポット４０の下部外周には連結板４３ａが直径方向に延設され、該連結板４３ａの端部が隣接する苗搬送ポット４０の連結板４３ｂと枢支ピン４４により互いに回動自在に連結されている。そして、該苗搬送ポット４０の上下中途部側面に前記駆動スプロケット４１と従動スプロケット４２の外周面が当接するようになされており、苗搬送ポット４０連が本実施例では平面視右回り回動し補助作業者２４側で反転して受継位置５０側へ苗を搬送するようにしている。
【００３１】
前記連結板４３ａの下部（搬送方向前部が好ましい）にはプレート状の蓋体４５の一側が支点ピン４６により枢支され、該蓋体４５の上面で前記苗搬送ポット４０の下面を蓋する構成としている。つまり蓋体４５を上下揺動されるシャッターとしている。
そして、該蓋体４５の他側の下面の左右一側にはローラ４７が回転自在に枢支され、苗搬送台３９上を転動するようにしている。該ロ−ラ４７は苗搬送ポット４０毎に取り付けられるが、連続した苗搬送ポット４０は搬送方向に対して左右交互にローラ４７を配置されている。つまり、一つの苗供給部７において、多数連結した苗搬送ポット４０、４０は偶数個とし、それぞれ順に番号を付したときに、奇数に位置する苗搬送ポット４０と偶数に位置する苗搬送ポットでは搬送方向に対して交互に左右逆側にローラ４７、４７を配置しているのである。さらに具体的には、奇数（または偶数）に対応するローラ４７は内周側に、一方、偶数（または奇数）に対応するローラ４７は外周側に配置するのである。そして奇数に位置する苗搬送ポット４０の外周面には特定色（例えば青色）を着色し、また偶数に位置する苗搬送ポット４０の外周面には他の特定色（例えば赤色）を着色しておき、これら苗搬送ポット４０に苗２６を投入するとき、主作業者は一方の特定色に着色されて右側の移植爪５１内に苗を落下させるものとした苗搬送ポット４０を受け持ち、補助作業者は他方の特定色に着色されて左側の移植爪５１内に苗を落下させる苗搬送ポット４０を受け持つようにする。
【００３２】
前記苗搬送台３９は前記ローラ４７が転動するレールの役目を果たしており、該苗搬送台３９の前記ローラ４７が転動する経路において、受継位置５０、つまり、機体上方の苗搬送台３９の開口部（または切欠）３９ａ、３９ｂを左右前後位置をズラせて並設配置して、該開口部３９ａ、３９ｂでローラ４７を支えるものがなくなり支点ピン４６を中心に蓋体４５が下方に回動して、苗搬送ポット４０の下方を開口し、苗２６が移植部２０に落下するようになしている。
【００３３】
即ち、左右方向に長い長円形の苗搬送台３９の前部右側の苗搬送ポット４０の移動軌跡部に開口部３９ａ、３９ｂを搬送方向に沿って開口し、該開口部３９ａ、３９ｂは苗搬送ポット４０の底面積よりも大きくして苗を落下できるようにすると共に、搬送方向に対しては連結した苗搬送ポット４０の３ピッチまたは５ピッチ離れた位置に開口しており、この間隔は条幅（条間隔）に合わせている。
そして進行方向に対して一方は左右一側を、他方は左右他側をそれぞれローラ４７が落ち込むように位置を合せて側方に大きく開口させ、ローラ４７が位置しない側は苗搬送ポット４０の底面よも若干広げる程度となされて苗は落下する（蓋体４５が下方へ回動できる）が進行方向前後で隣接する苗搬送ポット４０に付設されているローラ４７は落ち込まないようにしている。つまり、開口部３９ａ、３９ｂは苗搬送ポット４０の搬送方向中心線に対して、互いに左右逆側に広げて開口している。
【００３４】
そして、開口部３９ａ、３９ｂ内における進行方向前側のローラ４７が通過する位置には、徐々に上昇して苗搬送台３９のロ−ラ４７転動面につながるスロープ（傾斜面）３９ｃ、３９ｃがそれぞれ設けられて、ローラ４７が引っ掛かることなく移動に伴って徐々に蓋体４５が閉じるようにしている。
【００３５】
このように、苗供給部７は長円状に苗搬送ポット４０、４０・・・が配置され、機体後方の主作業者２３と補助作業者２４が位置する前を順に通過して、その通過時に苗２６を苗搬送ポット４０内に挿入し、その前方の移植部２０の移植爪５１、５１が位置する上方位置である特定苗搬送位置ｂ１、ｂ２（図７参照）へ回転移動させる。この特定苗搬送位置ｂ１、ｂ２において、３ピッチ離れた口−ラ４７、４７が同時に開口部３９ａ、３９ｂ内に落ち込み、蓋体４５、４５を下方に回動して開き、苗を落下させて移植部２０の移植爪５１、５１内に投入するようにしており、この落下させる位置を受継位置５０とする。つまり、受継位置５０は駆動スプロケット４１が位置する苗供給部７の駆動側に位置し且つ機体側に位置することによって移植部２０と近づけることができて受継が良好となる。そして、ロ−ラ４７、４７はスロープ３９ｃ、３９ｃに当接して徐々に上昇して蓋体４５、４５を閉じる。従って、１つの移植爪５１に対して１つおきの苗搬送ポット４０から苗が供給される。つまり、奇数となる苗搬送ポット４０は左右の開口部の左側（または右側）、偶数となる苗搬送ポット４０は右側（または左側）の開口部で下方の蓋体４５が開がれ、奇数の苗搬送ポット４０と偶数の苗搬送ポット４０とで左右の条（１条と２条または３条と４条）の移植爪５１、５１内に苗が同時に落下することになる。よって、同時２条の植付けが可能となり、左右条の間隔も一定に保てるのである。
【００３６】
苗搬送ポット４０連の内側範囲内で駆動スプロケット４１及び従動スプロケット４２の上側近傍には図１に示すようにこれらスプロケット４１、４２に跨る大きさの苗箱支持台４８が配置され、該苗箱支持台４８上に付加苗箱４９を支持させてある。
【００３７】
苗２６を起立状に収容された付加苗箱４９内の苗２６のうち、右側のものは畦２５の右側に位置した主作業者２３が取って近くの苗搬送ポット４０内に投入するのであり、また左側のものは畦２５の左側に位置した補助作業者２４が取って近くの苗搬送ポット４０に投入する。この際、付加苗箱４９は苗搬送ポット４０連の何れの苗搬送ポット４０に対しても至近距離に位置するため、機体左右の苗載せ台３１、３１に載せられた一般苗箱或いは付加苗箱４８内の苗２６を苗搬送ポット４０に投入する際に要する時間に較べて極めて短時間に苗搬送ポット４０に供給されるものとなる。
【００３８】
次に、移植部２０について図８乃至図１１をも参照して説明する。
図４に示す前記後フレーム２ｂ、２ｂの間の機体中央部における図１及び図２に示すミッションケ−ス４の後方に移植部２０が配設され、該移植部２０は左右中央部に位置して苗２６を図５に示す受継位置５０から畦２５へ搬送する左右の移植爪５１、５１を具備すると共に、この移植爪５１、５１を駆動するもので左右側に配置されて駆動部となるロータリケース５２、５２と、左右側に配置してガイド部となる昇降ガイド５３、５３と、これらを連結するアームやリンク等からなる植付け駆動機構を具備している。ロータリケース５２と昇降ガイド５３とは対となされて左右各側に配置されて機体フレーム２に固定されており、これら２対に対応して移植爪５１、５１が左右に配設されてあって、前記受継位置５０の下方で側面視楕円状の軌跡を経て昇降するように構成されている。
【００３９】
各ロータリケース５２は一端が機体フレーム２より左右水平方向に突設した支点軸５４に回転自在に支持され、各ロータリケース５２の左側側面の支点軸５４外周部に伝動体となるスプロケット５５が固設され、チェーン等の伝動手段を介して前記ミッションケース４と連動連結され、該移植部２０と前記苗供給部７が同期して駆動されるように構成されている。尚、スプロケット５５の代わりに歯車等により伝動する構成とすることもできる。
【００４０】
各ロータリケース５２内には三つの歯車が直列的に配置されてそれぞれ噛合され、各ロータリケース５２の他端側より出力軸５６を前記スプロケット５５と反対側に突出している。該出力軸５６上に回転アーム５７の一端が固設されている。こうして、ロータリケース５２が一回転すると同時にアーム５７が逆方向に一回転するように前記歯車が設定されている。前記アーム５７の他端に連結軸５９の一端が固設され、該連結軸５９上には前記植付け駆動機構の出力端部としての移植爪支持体６０、６０の一側（前下側）が軸受を介して回転自在に支持されている。左右の移植爪支持体６０は左右の縦向きプレートより構成して同一構造且つ同一寸法となされており、これら左右の縦向きプレート間の連結軸５９上には開閉カム６１が固設されている。
【００４１】
前記移植爪支持体６０、６０の他側（後側）には前記苗供給部７の図７に示す前記特定苗搬送位置ｂ１、ｂ２の直下に位置するように漏斗状の縦向き案内筒６０ａ、６０ａを形成して、前記受継位置５０より苗２６が入り易くし、また各縦向き案内筒６０ａ、６０ａ下部に開閉可能に移植爪５１、５１を配置している。
【００４２】
移植爪５１の開閉機構は、前記縦向き案内筒６０ａの前部と後部に同距離だけ離れた位置に爪支点軸６３、６３を左右水平方向に且つ脱着可能に設け、該爪支点軸６３に移植爪５１の上部の前後一端を枢支されている。この際、各移植爪５１は前後略対称に構成したくちばし状の爪部５１ａ、５１ａを有し、各爪部５１ａ、５１ａはその上部に爪支点軸６３、６３を挿入される軸受部ｄ、ｄを形成されている。そして、各移植爪５１は、爪部５１ａ、５１ａで形成された上端開口ａ１の範囲内の真上に当該移植爪５１の対応する前記縦向き案内筒６０ａの下端開口ａ２が位置するようになされ、これら爪部５１ａ、５１ａを閉じ合わせた状態で苗２６を収納支持し、開いた状態で苗２６を落下させるようにしており、爪部５１ａ、５１ａを閉じ合わせたときに接触する位置の上方の縦向き案内筒６０ａの左右両側に枢支軸６４、６４を設けて前後の爪部５１ａ、５１ａを連結している。
そして、該枢支軸６４、６４と縦向き案内筒６０ａ上部との間にバネ６９、６９を装着して、枢支軸６４、６４を持ち上げるようにして、移植爪５１を閉じる向きへ付勢している。
【００４３】
前記開閉カム６１側に位置する爪部５１ａの爪支点軸６３上には当接アーム６５の一端が枢支され、該当接アーム６５の他端にローラ６６を設けて前記開閉カム６１の外周に当接するように構成している。該当接アーム６５と爪部５１ａ上部との間には爪開閉量調節機構６７が設けられており、該爪開閉量調節機構６７は両者間にボルト６８を螺装して、該ボルト６８を回動することにより両者の間隔を調節して、爪部５１ａの運動量を調節できるようにしている。
【００４４】
さらに詳細には、前記バネ６９により爪部５１ａは閉じるように付勢され、支点軸６３に対して反対側に位置する当接アーム６５の先端は開閉カム６１に当接されて回動が規制されている。即ち、開閉カム６１の外周形状によって爪部５１ａが回動して移植爪５１が開閉されることになるのである。このように構成することによって、常に移植爪５１は閉じ方向に付勢され、開閉カム６１により強制的に開くように制御されるため、確実に開いて苗２６を落下させることができるのである。
【００４５】
前記ロータリケース５２と左右反対側に位置する移植爪支持体６０の前部が上方に延出されて延出部６０ｂが形成され、該延出部６０ｂより支持軸７０が昇降ガイド５３側の側方に突出され、該支持軸７０の端部にローラ７１を設けて上下方向に配置した昇降ガイド５３に嵌入して、移植爪５１の昇降をガイドするようにしている。
【００４６】
このような構成において、移植爪５１が上昇端に位置したとき爪部５１ａ、５１ａは閉じ、受継位置５０において、苗供給部７より苗が投入されると、ミッションケース４からの動力によりロータリケース５２が回動され、アーム５７も同時に回動されて、左右の一対の移植爪５１、５１は同時に、昇降ガイド５３に沿って下降し、植付け爪５１は略楕円軌跡を描いて下降する。
【００４７】
そして、下端位置まで下降すると、開閉カム６１の回動により、該開閉カム６１に当接して当接アーム６５が回動されて開閉カム６１の小径部に当接すると、爪支点軸６３、６３を中心に爪部５１ａが回動されて、移植爪５１、５１が開かれ、畦２５上の下端位置で苗２６が落下放出されるのである。さらに回動すると、移植爪５１、５１が上昇されて、上昇位置で開閉カム６１の回転により左右一対の移植爪５１、５１が同時に閉じられるのである。
【００４８】
なお、４ａはミッションケース４から左右方向へ突出された植付け駆動軸で、これの長さ途中に２つのスプロケット４ａ１、４ａ１が固定されており、該スプロケット４ａ１、４ａ１は左右のロータリケース５２、５２に対応した前記スプロケット５５、５５とチェーンを介して連動連結されている。５８は移植爪５１の爪部５１ａに付着した泥を掻き落とすためのスクレーパ装置である。
【００４９】
次に覆土輪２２の支持構成について図１２〜図１６により説明する。
前記左右の後フレーム２ｂ、２ｂの前後中途部下面から下方にステー７２、７２が突設され、該ステー７２、７２に覆土輸フレーム７３の前端が支点軸７４により枢支されて枢支部としている。該枢支部近傍に後述するロック部７５が設けられている。該覆土輪フレーム７３は平面視Ｕ字状に構成し、後端部より後方にハンドル７６を突出し、左右中央部より上方に支持ステ−７７を突設し、また左右中央部の下面部に覆土輪２２を支持させるための後面視Ｕ字形の固定片部７８を固着している。
【００５０】
固定片部７８の下面には中間支持片７９が前後方向の位置調整可能にボルト固定されており、該中間支持片７９は固定片部７８の下面に密接される後面視溝形の水平部材８０と、該水平部材８０の前端に固着された縦向き面部材８１とからなっている。該縦向き面部材８１は縦向き面部８１ａと、該縦向き面部８１ａの上辺を前側を屈曲して形成した係止部８１ｂと、左右各側辺を後方へ屈曲して形成した補強用前後向き面部８１ｃ、８１ｄとを備えている。
【００５１】
縦向き面部８１の前面には左右方向中央の上下二個所に設けた前後向き軸Ｓ１、Ｓ２を介して平行リンク機構８２が装設されている。該平行リンク機構８２は上下配置された複数の左右向きリンク部材８３ａ、８３ｂのそれぞれの長さ中央個所を前記前後向き軸Ｓ１、Ｓ２を介してこれら前後向き軸Ｓ１、Ｓ２回りの揺動可能に枢着すると共に、これら左右向きリンク部材８３ａ、８３ｂの左右各側でこれらの端部同士を上下向きリンク部材８４ａ、８４ｂ及びピン部材８５で連結したものとなされている。この際、上下向きリンク部材８４ａ、８４ｂは図１に示す機体フレーム２に沿った平面に対して略垂直に向けられると共に左右向きリンク部材８３ａ、８３ｂに対し左右方向の位置変更調整可能となされる。この実施例では上下向きリンク部材８４ａ、８４ｂを左右向きリンク部材８３ａ、８３ｂに対し左右方向の位置変更調整可能になすため、左右向きリンク部材８３ａ、８３ｂの左右各端部の少し内側に前記ピン部材８５の挿入されるピン孔８５ａが形成してあるが、これに限定するものではなく、左右方向へさらに多くのピン孔を設けてもよいし、或いは上下向きリンク部材８４ａ、８４ｂを左右向きリンク部材８３ａ、８３ｂに対し連続的に位置変更させ得るようになすことも差し支えない。
【００５２】
上下向きリンク部材８４ａ、８４ｂのそれぞれには逆Ｕ字形アーム部材８６ａ、８６ｂの上辺部中央個所を固着されており、前記逆Ｕ字形アーム部材８６ａ、８６ｂの各アーム端に結合片８７を固着し、該結合片８７に軸支持アーム片８８を左右方向の位置調整可能にボルト固定し、該軸支持アーム片８８の先部に固定された車軸８９に一つの覆土輪２２を回動自在に支持させている。この際、左側の逆Ｕ字形アーム部材８６ａは左側の移植爪５１（図２）の真後ろに、そして右側の逆Ｕ字形アーム部材８６ｂは右側の移植爪５１（図２）の真後ろに位置される。各逆Ｕ字形アーム部材８６ａ、８６ｂの左右一対のアーム端に対向状に固定される一対の覆土輪２２、２２が一つの覆土輪組２２Ａをなし、各覆土輪組２２Ａはその対応する移植爪５１の植え付けた苗２６の条列の左右各側の土を鎮圧しつつ該苗２６の株元に覆土するように作用するものとなされている。
【００５３】
上記した覆土輪２２の支持構造において、一側の覆土輪組２２Ａが上下変位されると、他側の覆土輪組２２Ａが平行リンク機構８２を介して逆向きへ上下変位されるように作動し、この際、各覆土輪組２２Ａは機体フレーム２が水平である限り略重力方向（垂直向き）へ移動される。そして係止部８１ｂは前後向き軸Ｓ１、Ｓ２回りへ大きく揺動された左右向きリンク部材８３ａに当接して平行リンク機構８２の変形を一定限度以下に制限する。そして、各上下向きリンク部材８４ａ、８４ｂが左右向きリンク部材８３ａ、８３ｂの左右各側の端部に装着されている状態では、左右の逆Ｕ字形アーム部材８６ａ、８６ｂのそれぞれの左右巾中央点Ｐ１、Ｐ２間の距離が２２ｃｍとなり、一方、各上下向きリンク部材８４ａ、８４ｂが左右向きリンク部材８３ａ、８３ｂの左右各側の端部より少し内側のピン孔８５個所に装着された状態では、前記左右巾中央点Ｐ１、Ｐ２間の距離が２０ｃｍとなる。なお、前記左右巾中央点Ｐ１、Ｐ２間の距離が２０ｃｍとなされるときは各逆Ｕ字形アーム部材８６ａ、８６ｂに対応する移植爪５１、５１も同様に左右方向の内側へ移動させる。
【００５４】
前記支持ステ−７７の上部に枢支軸９０が左右方向に設けてあり、該枢支軸９０には延設部材となるガイド杆９１の一側が摺動自在に挿入され、該枢支軸９０の上下側のガイド杆９１上には付勢部材となるバネ９２ａ、９２ｂが外嵌されている。そして該ガイド杆９１の他端は前記ハンドルフレーム６（中フレーム６Ｍ）の後部に支点軸９３により回転自在に支持されている。
このように構成することによって、前記覆土輸２２は前記バネ９２ｂの付勢力により下方へ押圧するように付勢されている。そして、作業終了時や回行するときに、ハンドル７６を持って覆土輪２２を上昇させると、枢支軸９０が支点軸７４、９３を結ぶ線上よりも上方に位置すると死点越えとなって、覆土輪２２を上昇した位置に維持することができるのである。
【００５５】
次に、覆土輪２２を上昇させた位置にロックするためのロック部７５の構成について、図１２、図１３を用いて説明する。前記支点軸７４近傍にはロック部７５が設けられている。該ロック部７５は前記覆土輸フレーム７３の回動基部側に枢支軸９４によりロックアーム９５の一端を枢支し、該ロツクアーム９５の他側には長手方向と上方（支点軸７４に対して半径方向）に延びるＬ字状の長孔９５ａが形成され、一方、シャーシ（後フレーム２ｂ）の前記ステ−７２よりも上方位置に係止ピン９６を突出して、該係止ピン９６を前記長孔９５ａに挿入している。
【００５６】
さらに前記ロックアーム９５の他端（上端）にワイヤー９７とバネ９８の一端が連結され、該バネ９８の他端は前方の後フレーム２ｂに連結されてロックアーム９５を前方へ回動するように付勢し、ワイヤー９７の他端は前記昇降レバー３２の回動基部に設けたアーム９９と連結している。該昇降レバー３２にはさらに図示しないワイヤー等を介して図１に示すエンジン３近傍に設けた油圧弁操作レバーと連結され、該昇降レバー３２の操作により図１に示す前記油圧シリンダ１９を作動させて機体を昇降可能としている。
【００５７】
このような構成において、前記ハンドル７６を持ち上げて覆土輸２２を上昇させると、ロックアーム９５も持ち上げられて、係止ピン９６が長孔９５ａに対して下降し、覆土輸２２が上昇位置で前述の如く死点越えして上昇位置に到達すると、係止ピン９６が長孔９５ａの垂直部９５ｂに入り、ロックアーム９５はバネ９８の引っ張り力により下方へ回動付勢され、係止ピン９６が長孔９５ａの垂直部９５ｂに維持され、覆土輪２２が自重やバネ９２ｂの力等により下方へ回動しようとしても、垂直部９５ｂに係止ピン９６が係合されて回動できず、覆土輪２２は上昇位置にロックされることになる。
【００５８】
そして、作業開始時や回行後の作業再開時に、昇降レバー３２を機体が下降するように、前方へ回動操作すると、ワイヤー９７が引っ張られてロックアーム９５をバネ９８力に抗して後方へ回動し、この回動によって長孔９５ａの内面が係止ピン９６に対し斜め上方へ移動されて覆土輪フレーム７３の下方移動を許容する状態となり、これにより覆土輪フレーム７３はこれに関連した部材の重量やバネ９２ｂの力などにより死点越え部分を通過して降下し、覆土輸２２を接地するまで下げる。つまり、昇降レバー３２の下降操作に連動して覆土輪２２が下降するのである。
【００５９】
覆土輪２２が接地すると、前後向き軸Ｓ１、Ｓ２にはこれに支持された部材の重量などが作用し、各覆土輪組２２Ａ、２２Ａは機体フレーム２に対する起立姿勢を保持されたまま上下変位し、それぞれが畦２５上面に接した状態でその上下位置が確定され、以後、前後向き軸Ｓ１、Ｓ２に作用する下向き力の半分づつを分担する。接地状態の各覆土輪組２２Ａ、２２Ａにおけるそれぞれの覆土輪２２は図１３に示すように、その周面が略水平状態となってその対応する移植爪５１の植え付けた苗２６の条列の左右近傍の地面を鎮圧しつつ該苗２６の株元に覆土する。この際、各覆土輪２２は重力方向へ地面を鎮圧するため、たとえ畦２５上面が傾斜していても、苗２６は傾斜した地面に垂直とならず、重力方向の直立状態に植え付けられるものとなる。
移植爪５１、５１で植え付けた苗２６に対してその対応する覆土輪組２２Ａ、２２Ａの一対の覆土輪２２、２２間中心が真後ろに位置してないときや、苗２６の条列に対する各覆土輪２２の左右位置が適正でないときが生じ得るが、このようなときは、前記逆Ｕ字形アーム部材８６ａ、８６ｂの各アーム端の結合片８７に対する軸支持アーム片８８の左右位置をボルトの締結弛緩操作により調整する。
そして、移植爪５１、５１で植え付けた苗２６に対しその対応する覆土輪組２２Ａの前後位置が適正でないときはボルトの弛緩締結操作により固定片部７８に対する中間支持片７９の前後位置を変更調整する。
【００６０】
なお、本実施例においては、２条植えとしているが、移植爪５１及びその駆動機構をさらに一対左右方向に付加して４条植えとすることも可能である。この際、縦向き面部８１ａ上の上下２つの前後向き軸Ｓ１、Ｓ２を介して２本の左右向きリンク部材８３ａ、８３ｂを先と同様に装設すると共に、これら左右向きリンク部材８３ａ、８３ｂの左右方向適当間隔個所に４つの上下向きリンク部材を装着し、該上下向きリンク部材のそれぞれに覆土輪組２２Ａを支持させた構成となすか、或いは、覆土輪フレーム７３の左右２個所に縦向き面部８１ａを形成し、各縦向き面部８１ａごとに、隣接した２条の苗２６に覆土する一対の覆土輪組２２Ａを先に準じて装着した構成となす。
【００６１】
【発明の効果】
本発明は、以上のように構成したので、以下に示すような効果を奏するのである。
即ち、請求項１記載のものによれば、機体フレーム２と地面との相対的な横傾斜変化が生じて、各覆土輪組２２Ａの存在位置での地面から機体フレーム２までの高さが変化したときにも、移植爪５１、５１で植え付けられた苗２６の条列の左右近傍の地面を各覆土輪２２の水平周面に重力方向へ向け鎮圧させることができ、この際、移植爪５１、５１で植え付けられた直後の苗２６の株元の左右の地面のうち高い側の地面を大きな力で重力方向へ鎮圧して該苗２６の周囲の地面を水平面化させることができ、これにより移植終了後の苗２６を重力方向に直立させることができるのである。
【００６２】
請求項２記載のものによれば、請求項１記載の発明の効果が得られるほかに次のような効果が得られるのであって、即ち、平行リンク機構８２を具備した覆土輪２２支持構造をコンパクトとなすことができ、また平行リンク機構８２を地面に植え付けられた苗２６に干渉し難くなすことができるほか、移植爪５１、５１の後側に覆土輪２２を有する構成となされた既存の移植機において容易に実施できるものである。
【００６３】
請求項３記載のものによれば、請求項１記載の発明の効果が得られるほかに次のような効果が得られるのであって、即ち、複数条の苗２６の条間隔を変更するときに左右の覆土輪組２２Ａ、２２Ａの左右間隔を変更することが必要であるが、該変更は左右一対の覆土輪２２、２２を逆Ｕ字形アーム部材８６ａ、８６ｂに装着してなる組立品を位置変更することにより簡便に行えるようになるのであり、また逆Ｕ字形アーム部材８６ａ、８６ｂをこれに対応した移植爪５１、５１で植え付けられた苗２６と干渉し難いものとなすことができる。
【００６４】
請求項４記載のものによれば、請求項３記載の発明の効果が得られるほかに次のような効果が得られるのであって、即ち、各条の苗２６にその対応する覆土輪組２２Ａを位置合わせするとき、該覆土輪組２２Ａの左右の覆土輪２２、２２を左右方向へ位置調整することにより、該覆土輪組２２Ａの一対の覆土輪２２、２２をこれの対応する苗２６の条列に対し最適位置に位置させることができ、各移植爪５１、５１で植え付けられた苗２６の条列の近傍の地面の正確な位置を鎮圧して該苗２６に覆土することができる。
【００６５】
請求項５記載のものによれば、請求項２記載の発明の効果が得られるほかに次のような効果が得られるのであって、即ち、移植爪５１、５１で植え付けられる複数条の苗２６の条間隔を比較的大きく変更するときに、左右の各覆土輪組２２Ａ、２２Ａをこれの対応する苗２６条列に対する左右方向の最適位置に位置させることができ、各条列の苗２６の株元の左右各側の地面の正確な位置を鎮圧して該苗２６に覆土することができる。
【００６６】
請求項６記載のものによれば、請求項１記載の発明の効果が得られるほかに次のような効果が得られるのであって、即ち、地面に植え付けられた苗２６に対する覆土輪組２２Ａの前後位置を最適状態に位置合わせすることができ、しかも該調整が覆土輪フレーム７３に対する平行リンク機構８２を位置変化させることで済み、それぞれの覆土輪２２を単独に位置変化させる必要のないものとなすことができる。
【００６７】
請求項７記載のものによれば、請求項６記載の発明の効果が得られるほかに次のような効果が得られるのであって、即ち、単一の覆土輪フレーム７３を上下変位させることにより全ての覆土輪２２を機体に対する特定方向へ上下変位させることができるのであり、また中間支持片７９の前後位置を変更することにより、地面に植え付けられた苗２６に対する覆土輪組２２Ａの前後位置を最適状態に位置合わせすることができる。
【００６８】
請求項８記載のものによれば、請求項７記載の発明の効果が得られるほかに次のような効果が得られるのであって、即ち、覆土輪組２２Ａ、２２Ａを前後向き軸Ｓ１、Ｓ２を対称軸として逆対称に上下変位させ、左右方向で隣接した２条の苗２６の株元の左右各側の地面の正確な位置を重力方向へ鎮圧して該苗２６に的確に覆土させることができる。
【００６９】
請求項９記載のものによれば、左右の覆土輪組２２Ａ、２２Ａを簡易な機構により必要以上に上下変位させない構成となすことができ、特に覆土輪２２の不使用時に覆土輪２２が過度に降下して接地するのを阻止することができる。
【００７０】
請求項１０記載のものによれば、複数の左右向きリンク部材８３ａ、８３ｂ及び支持片としての上下向きリンク部材８４ａ、８４ｂが平行リンク機構８２を形成するものとなって、請求項１記載の発明と同様な効果を得ることができるのであり、また単一の覆土輪フレーム７３が全ての覆土輪２２を機体に対する特定方向へ上下変位させ、且つ左右の覆土輪組２２Ａ、２２Ａが前後向き軸Ｓ１、Ｓ２を対称軸として逆対称に上下変位されるため、左右方向で隣接した２条の苗２６の株元の左右各側の地面を重力方向へ鎮圧して該苗２６の左右各側の地面を正確に同一水平面となすように覆土させることができる。
【００７１】
請求項１１記載のものによれば、請求項１０記載の発明の効果が得られるほかに次のような効果が得られるのであって、即ち、左右の覆土輪組２２Ａ、２２Ａの左右位置を上下向きリンク部材８４ａ、８４ｂの位置変更により変更させることができ、隣接した苗２６の条列間距離の変更に簡便に対応させることができる。
【図面の簡単な説明】
【図１】本発明の一実施例に係る歩行型野菜移植機の全体的な構成を示した側面図である。
【図２】同じく平面図である。
【図３】機体フレーム２とミッションケース部分の側面図である。
【図４】機体フレーム２部分の平面図である。
【図５】苗供給部の平面図である。
【図６】受継部の後面断面図である。
【図７】同じく平面図である。
【図８】移植部の後面図である。
【図９】同じく側面図である。
【図１０】同じく平面図である。
【図１１】移植爪の側面断面図である。
【図１２】鎮圧輪支持部の側面図である。
【図１３】鎮圧輪部分の後面図である。
【図１４】鎮圧輪支持部の拡大側面図である。
【図１５】図１４の一部を示す拡大図である。
【図１６】鎮圧輪部分の拡大後面図である。
【図１７】図１６の一部を示す拡大図である。
【符号の説明】
２機体フレーム
２２覆土輪
２２Ａ覆土輪組
２５畦（地面）
２６苗
７９中間支持片
８１ｂ係止部
８２平行リンク機構
８３ａ左右向きリンク部材
８３ｂ左右向きリンク部材
８６ａ逆Ｕ字形アーム部材
８６ｂ逆Ｕ字形アーム部材
Ｓ１前後向き軸
Ｓ２前後向き軸[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vegetable transplanter that operates so as to plant seedlings on the ground (top surface of a cocoon) and to cover the seedlings with a covering ring.
[0002]
[Prior art]
A plurality of seedlings adjacent in the left-right direction are simultaneously received by the transplanting claws on the upper surface of the culm, and the ground in the vicinity of the left and right of the seed stock of each seedling planted in this way consists of a pair of left and right cover rings There is a vegetable transplanting machine that suppresses the soil with a cover ring and covers the seedling.
In the said vegetable transplanting machine, each of the said covering soil ring group arrange | positioned right and left shall be displaced up and down in the specific direction around the front-back direction axis | shaft with respect to the body frame same body as an engine etc. (for example, refer patent document 1).
[0003]
[Patent Document 1]
JP 2001-211713 (paragraph number 0013, FIG. 4, FIG. 9, FIG. 10, FIG. 11)
[0004]
[Problems to be solved by the invention]
In the conventional vegetable transplanting machine as described above, when the parallelism between the body frame and the ground is impaired and the lateral inclination is relatively inclined, the ground contact pressure and the pressure-reducing direction of the cover ring set change relatively greatly. As a result, accurate transplantation may not be possible.
An object of this invention is to provide the vegetable transplanting machine which can eliminate such a problem.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is characterized in that a plurality of seedlings are planted on the ground in parallel, and the ground on the left and right sides of the seedlings of the seedlings planted in this way is provided. In the vegetable transplanting machine that is crushed by the cover ring ring composed of a pair of left and right cover ring rings and covered with the stock, the cover ring ring set is supported via a parallel link mechanism.
According to this, even when the relative lateral inclination change between the airframe frame and the ground occurs and the height from the ground to the airframe frame at the position where each cover ring set is present, the parallel link mechanism is The height of each cover ring set relative to the fuselage frame is changed so that each cover ring set touches the ground with a relatively uniform pressure without changing its standing direction, and each cover ring set covers the soil. The left and right sides in the vicinity of the seedlings are pressed down so that the higher side is greatly sunk to level the ground on the left and right sides of the seedlings. It will be planted upright in the direction of gravity.
[0006]
Further, the invention according to claim 2 is that a plurality of seedlings are planted on the ground simultaneously in parallel, and the ground on the left and right sides of the seedlings of each seedling planted in this way is separated from a pair of left and right covering rings. In the vegetable transplanting machine that is to be covered with soil by crushing with the cover ring set, a parallel link mechanism that swings and deforms along the standing surface in the left-right direction is installed on the machine frame, and the parallel link mechanism The soil covering ring is supported at the left and right end lower portions.
According to this, in addition to the operation similar to that of the first aspect of the invention, the following operation can be obtained. That is, the support structure of the cover ring is compact, and the parallel link mechanism is connected to the ground. It becomes difficult to interfere with the seedlings planted in the plant, and the parallel link mechanism and the cover ring are easily installed in an existing vegetable transplanter.
[0007]
The invention according to claim 3 is that a plurality of seedlings are planted on the ground simultaneously in parallel, and the ground on each side of the left and right sides of the seedling of each seedling planted in this way is separated from a pair of left and right covering rings. In the vegetable transplanting machine, which is pressed down by the cover ring ring to cover the stock, a parallel link mechanism is formed on the body frame, and the parallel link mechanism includes the pair of left and right cover ring rings. Is supported through an inverted U-shaped arm member.
According to this, in addition to the same operation as the invention described in claim 1, the following operation can be obtained. That is, when changing the interval between the plurality of seedlings, it corresponds to each item. However, it is necessary to change the position of the assembly in which the pair of left and right covering rings are attached to the inverted U-shaped arm member. Further, the inverted U-shaped arm member is unlikely to interfere with the seedling passing between the pair of left and right cover rings.
[0008]
The present invention may be embodied as follows. That is, as described in claim 4, the position adjustment in the left-right direction is performed by placing one cover ring at each arm end of the inverted U-shaped arm member. Support as possible. According to this, in addition to the same operation as that of the invention described in claim 3, the following operation can be obtained, that is, the right and left positions of the respective cover rings of the cover ring set on each seedling. , The right and left earthen rings are aligned at the optimum positions in the left and right direction with respect to the corresponding strips, and the appropriate positions of the ground on the left and right sides of the stock of the row seedlings are aligned in a horizontal plane. The seedling is crushed and covered with the seedling.
[0009]
Further, the invention according to claim 5 is that a plurality of seedlings are planted on the ground simultaneously in parallel, and the ground on the left and right sides of the stock of each seedling planted in this way is separated from a pair of left and right covering rings. In the vegetable transplanting machine that has been crushed by the cover soil ring group and covered with the stock, a parallel link mechanism that swings and deforms along the standing surface in the left-right direction is formed in the machine frame, and the parallel link mechanism It is characterized in that the earthen ring is supported so that the position change in the left-right direction can be adjusted.
According to this, in addition to the same effect as that of the invention described in claim 1, the following effect can be obtained, that is, the interval between the plurality of seedlings planted by the transplanting nails is relatively large. When changing, each cover ring set described above is aligned at the optimal position in the left-right direction with respect to the corresponding strip, and the appropriate position of the ground on the left and right sides of the stock source of the corresponding strip is set in a horizontal plane. The seedling is crushed and covered with the seedling.
[0010]
The invention according to claim 6 is that a plurality of seedlings are planted on the ground simultaneously in parallel, and the ground on each side of the left and right sides of the seedling of each seedling planted in this way is separated from a pair of left and right covering rings. In the vegetable transplanting machine that is to be covered with soil by crushing with a cover ring assembly, a parallel link mechanism for supporting the cover ring is formed, and the parallel link mechanism is adjusted in the longitudinal position with respect to the machine frame. It is characterized by being made possible.
According to this, in addition to the same operation as that of the first aspect of the invention, the following operation can be obtained, that is, the front-rear position of the covering ring group with respect to the seedling planted on the ground is optimal. The adjustment is performed by changing the position of the parallel link mechanism with respect to the body frame, and it is not necessary to change the position of each cover ring.
[0011]
In addition, the invention according to claim 7 is to plant two seedlings adjacent in the left-right direction simultaneously on the ground, and to set the ground on the left and right sides of the seed stock of each seedling planted in this way. In a vegetable transplanting machine that is crushed by a pair of left and right earthen rings and covered by the stock, an intermediate support piece is attached to the earthen ring frame installed on the body frame so as to be vertically displaceable so that the front and rear positions can be adjusted. The intermediate support piece is provided with a parallel link mechanism for supporting the cover ring.
According to this, in addition to the operation similar to that of the first aspect of the invention, the following operation can be obtained, that is, the single cover ring frame identifies all cover rings with respect to the aircraft. The front / rear position of the cover ring wheel with respect to the seedling planted on the ground is optimally adjusted by changing the front / rear position of the intermediate support piece simultaneously.
[0012]
Further, the invention according to claim 8 is to plant two seedlings adjacent in the left-right direction simultaneously on the ground, and to determine the ground on the left and right sides of the seedlings of the seedlings planted in this way. In a vegetable transplanting machine that is crushed by a pair of left and right earthen rings and covered by the stock, an intermediate support piece is attached to the earthen ring frame installed on the body frame so as to be vertically displaceable so that the front and rear positions can be adjusted. The intermediate support piece supports a center portion of the length of the left-right link member of the parallel link mechanism for supporting the cover ring so as to be swingable about a front-rear axis.
According to this, in addition to the same operation as that of the invention described in claim 7, the following operation can be obtained. That is, the soil covering ring set is antisymmetric with the front-rear axis as a symmetry axis. The right and left sides of the roots of two seedlings that are adjacent in the left-right direction are displaced in the vertical direction, and the appropriate position of the ground on the left and right sides is suppressed in a horizontal plane regardless of the height of the covering ring group to cover the seedlings. Will be.
[0013]
The present invention may be embodied as follows, that is, as described in claim 9, for restricting the swing of the left-right link member within a certain range to the intermediate support piece. A locking part is formed. According to this, in addition to the same operation as that of the invention according to the eighth aspect, the following operation can be obtained. That is, the covered earth ring set is not displaced up and down more than necessary by a simple mechanism. It becomes.
[0014]
According to the invention of claim 10, two seedlings adjacent in the left-right direction are planted on the ground simultaneously in parallel, and the ground on the left and right sides of the stock source of each seedling planted in this way is In a vegetable transplanting machine that is crushed by a pair of left and right cover rings and covered by the stock, a plurality of left and right links arranged vertically on a cover ring frame that is mounted on the body frame so as to be vertically displaceable A vertical link member for supporting the pair of left and right cover rings on each of the left and right sides of the plurality of left and right link members is pivotally attached to each of the central portions of the members so as to be swingable about a longitudinal axis. It is characterized by wearing.
According to this, the plurality of right and left direction link members and the support piece (up and down direction link member) form a parallel link mechanism, and the same action as the invention of claim 1 is obtained, The single cover ring frame simultaneously moves all cover rings up and down in a specific direction with respect to the airframe, and the cover ring set moves up and down in an antisymmetric manner with the front-rear axis as a symmetry axis. The appropriate position of the ground on the left and right sides of the stock of two adjacent seedlings is reduced in a horizontal plane to cover the seedling.
[0015]
According to the invention of claim 11, two seedlings adjacent in the left-right direction are planted on the ground simultaneously in parallel, and the ground on the left and right sides of the seed stock of each seed planted in this way is In a vegetable transplanting machine that is crushed by a pair of left and right cover rings and covered with the stock, a plurality of left and right link members arranged vertically on a cover ring frame that is mounted on the body frame so as to be vertically displaceable A vertical link with a pair of left and right cover rings attached to the left and right sides of these left and right link members, while pivoting around the central portion of each length so as to be swingable about a longitudinal axis. It is connected with a member, and each of the vertical link members is mounted on the horizontal link member so that the position of the horizontal link member can be changed.
According to this, in addition to the same operation as that of the invention according to the tenth aspect, the following operation can be obtained. That is, the cover soil ring assembly can be changed by changing the position of the vertical link member. The position is changed to the optimum state.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the invention will be described. 1 is a side view showing the overall configuration of a walking type vegetable transplanter according to an embodiment of the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a side view of a fuselage frame and a mission case portion, and FIG. FIG. 5 is a plan view of the seedling supply part, FIG. 6 is a rear sectional view of the inheriting part, FIG. 7 is also a plan view, FIG. 8 is a rear view of the transplanting part, and FIG. FIG. 10 is also a plan view, FIG. 11 is a side sectional view of the graft claw, FIG. 12 is a side view of the pressure wheel support portion, FIG. 13 is a rear view of the pressure wheel portion, and FIG. 14 is an enlarged side view of the pressure wheel support portion. 15 is an enlarged view showing a part of FIG. 14, FIG. 16 is an enlarged rear view of the pressure wheel portion, and FIG. 17 is an enlarged view showing a part of FIG.
[0017]
First, the overall configuration of a walking type vegetable transplanter for onion according to an embodiment of the present invention will be described.
1 and 2, the vegetable transplanter 1 has an engine 3 mounted on the front part of the machine frame 2, a mission case 4 arranged on the front and rear center part, and a handle frame from the rear upper part of the machine frame 2 to the rear. 6 is extended horizontally, the seedling supply part 7 is arranged on the middle part of the handle frame 6, and the rear part of the handle frame 6 is used as a driving operation part 9.
[0018]
A front wheel support shaft 10 is horizontally mounted on the front portion of the body frame 2, and ends of front wheel support arms 11, 11 are attached to both sides of the front wheel support shaft 10, and a front wheel is mounted on the other end of the front wheel support arms 11, 11. 12 and 12 are attached.
Further, the rear wheel drive shaft 15 protrudes horizontally from the left and right side surfaces of the transmission case 4, and drive cases 16, 16 are connected to both sides of the rear wheel drive shaft 15, and the rear of the drive cases 16, 16 is provided. The rear wheels 17 and 17 are axially attached. The front wheel support arm 11 and the drive case 16 are connected via a link mechanism 18, and the drive case 16 is connected via a hydraulic cylinder 19 provided at the lower part of the body frame 2 and a link mechanism 18 linked to the hydraulic cylinder 19. By extending and contracting the hydraulic cylinder 19, the front wheel support arm 11 and the drive case 16 are rotated about the front wheel support shaft 10 and the rear wheel drive shaft 15 so that the body frame 2 can be raised and lowered.
[0019]
And the transplant part 20 is arrange | positioned under the seedling supply part 7 between the rear frames 2b and 2b shown in FIG. 4 in the rear part of the mission case 4, and is protected by the rear frames 2b and 2b. Raises and lowers the transplantation nail 51, receives the seedling 26 from the seedling supply unit 7 at the upper end position of the movement trajectory, and after the transplantation nail 51 pierces the upper surface of the heel at the lower end position of the movement locus, 51 is opened, the seedling 26 is dropped on the heel 25, and the soil is brought close to the stock of the seedling 26 by the cover ring 22 arranged behind the seedling 26 and transplanted.
[0020]
Next, the configuration of each unit will be described.
First, the chassis that supports the traveling unit and the planting unit will be described. As shown in FIGS. 3 and 4, the chassis includes a body frame 2, a mission case 4 connected to the body frame 2, and a handle frame 6 connecting the mission case 4 and the body frame 2. .
[0021]
The body frame 2 has a substantially inverted “h” shape when viewed from the side, and includes a front frame 2a and a rear frame 2b, which are connected to each other at a substantially front and rear central portion, and the front frame 2a is formed in a plate shape. The engine 3 is mounted and fixed on the front part, and the mission case 4 is mounted and fixed on the rear part. The rear frame 2b includes two pipes extending rearward from the left and right outer ends of the horizontal frames 2d1 and 2d2 fixed to the rear end of the front frame 2a. The middle frame 2e is extended rearward from the inner end of the horizontal frame 2d1 in the left-right direction, and the middle pillar 2e1 is erected from the middle part of the length of the middle frame 2e. Further, a rear wheel drive shaft 15 is supported horizontally at the lower part of the transmission case 4.
[0022]
The left and right center line in the front-rear direction of the front frame 2a is used as the center line of the traveling unit (airframe), and the rear wheel drive shaft 15 extends laterally by shifting to the left and right sides (the left side in the traveling direction in this embodiment). When the vegetable transplanter 1 travels across the ridge 25, the traveling part deviates to the left and right sides and travels in two rows on the left and right sides on the forward path and the return path as described later (on the forward path). The first and second lines can be transplanted on the return path. The left and right front wheels 12 and 12 and the rear wheels 17 and 17 can be adjusted in the left and right positions (vehicle width) in accordance with the shape and width of the flange 25.
[0023]
As shown in FIGS. 2 and 3, the front part of the handle frame 6 is connected to the rear part of the rear frame 2b and the upper part of the middle pillar 2e1, and the front part of the handle frame 6 is connected to the upper part of the mission case 4. Connected, supports the seedling supply section 7 and the left and right seedling mounts 31 and 31 on the front and rear midway, the rear lever and the work lever, accelerator lever, side clutch lever and height adjustment in addition to the lift lever 32 and main clutch lever 33 Operation levers such as levers are arranged.
[0024]
The handle frame 6 is composed of a right frame 6R, a middle frame 6M and a left frame 6L in an “E” shape in plan view. The transmission case 4 is supported and fixed between the front portions of the right frame 6R and the middle frame 6M. A connecting plate 34 is installed between them, and the rear end upper part of the right rear frame 2b is fixed to the lower surface of the connecting plate 34. A drive case for the seedling supply unit 7 is attached to the lower part of the connection plate 34.
[0025]
The upper end of the middle pillar 2e1 is connected and fixed to the front portion of the middle frame 6M. In this way, the rigidity is improved by connecting and fixing the right frame 6R, the middle frame 6M, and the left frame 6L.
Further, a seedling stage frame 35 is projected outward from the middle part of the right frame 6R to attach the seedling stage 31 to the right side of the body, and a seedling stage frame 36 is projected outward from the left frame 6L. A seedling stand 31 is attached to the left side of the machine body. Further, if necessary, two seedling support frames 38a are projected forward from the front portions of the right frame 6R and the left frame 6L, and the seedling support base 38 is attached to the center between the left and right rear wheels 17, 17. .
[0026]
In this embodiment, the main worker 23 is located behind the rear wheel 17 on the right side of the handle frame 6 on the right side of the machine body (diagonal right behind the seedling supply unit 7), and behind the rear transfer 17 on the side of the handle frame 6 on the left side of the machine body. The auxiliary worker 24 is positioned (left obliquely rearward of the seedling supply unit 7), and in the case of single work, only the right side of the machine body is positioned, and the main worker 23 operates the operation lever, and The seedlings 26 are taken from 31, and the seedlings 26 are inserted one by one (or a predetermined number) into each seedling transport pot 40 of the seedling supply unit 7. The auxiliary operator 24 inserts the seedling 26 into the seedling transport pot 40 that the main worker 23 has not been able to insert into the seedling transport pot 40 and supplements it. When the left rear wheel 17 is moved to the left and right in relation to the width of the rod 25, the auxiliary worker 24 is moved to the left and right accordingly.
[0027]
Next, the seedling supply unit 7 will be described with reference to FIGS. 2, 5, 6, and 7.
As shown in FIG. 2, a U-shaped support frame 37 in a plan view is projected from the middle part of the left frame 6 L toward the auxiliary worker 24 (opposite to the center of the machine body) in the horizontal direction. On the middle part of the handle frame 6 in the front-rear direction, a seedling carrier 39 having a plate body formed in a laterally long oval shape (long ring shape) is fixed substantially horizontally.
[0028]
As shown in FIGS. 2 and 5, the longitudinal support shaft 41 a with the drive sprocket 41 fixed on the connecting plate 34 and the longitudinal support with the driven sprocket 42 fixed on the support frame 37 are provided. A series of seedling transport pots 40 connected to each of the drive sprocket 41 and the driven sprocket 42 in a chain shape are wound around the shaft 42a. The drive sprocket 41 is coupled to a drive cylinder member 41b that is rotatably fitted on the vertical support shaft 41a. Power is transmitted from the transmission case 4 to the drive cylinder member 41b via a transmission mechanism such as a chain. Is done.
[0029]
Thus, the seedling carrier 39 is extended to the side of the wheel (front wheel 12, rear wheel 17) that is displaced from the center of the machine body, so that the seedling supply unit 7 is disposed so as to straddle the heel 25, and In this case, a square shape in which both the main worker 23 and the auxiliary worker 24 located on both sides of the rod 25 face the seedling supply unit 7 and are placed on the seedling placing table 31 so as to straddle the four planting widths. The seedling 26 accommodated in the general seedling box is taken and supplied to the seedling transport pot 40.
The general seedling box used here is a rectangular shape that is open at the top and is integrally formed of a synthetic resin material, and stores seedlings 26 such as onions in a sideways direction.
[0030]
As shown in FIGS. 6 and 7, the seedling transport pot 40 is formed in a funnel shape in which the upper part of the cylindrical body is expanded, and has a shape in which the seedling 26 can be easily inserted from above. A connecting plate 43a extends in the diameter direction on the outer periphery of the lower portion of the seedling transport pot 40, and ends of the connecting plate 43a are connected to each other by the connecting plate 43b of the adjacent seedling transport pot 40 and a pivot pin 44 so as to be rotatable. Has been. And the outer peripheral surface of the said drive sprocket 41 and the driven sprocket 42 is made to contact | abut to the side surface of the upper-lower middle part of this seedling conveyance pot 40, and the seedling conveyance pot 40 series rotates clockwise in planar view in this embodiment. The seedlings are reversed to the auxiliary worker 24 side and conveyed to the inheritance position 50 side.
[0031]
One side of a plate-like lid body 45 is pivotally supported by a fulcrum pin 46 at the lower part of the connecting plate 43a (preferably in the front part in the transport direction), and the lower surface of the seedling transport pot 40 is covered by the upper surface of the lid body 45. It is configured. That is, the lid 45 is a shutter that can be swung up and down.
A roller 47 is rotatably supported on one side of the lower surface of the other side of the lid 45 so as to roll on the seedling transport table 39. The roller 47 is attached to each seedling transport pot 40, and the continuous seedling transport pot 40 has rollers 47 arranged alternately on the left and right in the transport direction. That is, in one seedling supply unit 7, the number of seedling transport pots 40, 40 connected in large numbers is an even number, and when numbered sequentially, the seedling transport pot 40 positioned at odd numbers and the seedling transport pot positioned at even numbers The rollers 47 are arranged alternately on the left and right sides with respect to the transport direction. More specifically, the rollers 47 corresponding to odd numbers (or even numbers) are arranged on the inner peripheral side, while the rollers 47 corresponding to even numbers (or odd numbers) are arranged on the outer peripheral side. And the specific color (for example, blue) is colored on the outer peripheral surface of the seedling transport pot 40 located at an odd number, and the other specific color (for example, red) is colored on the outer peripheral surface of the seedling transport pot 40 positioned at an even number. When the seedlings 26 are put into these seedling transport pots 40, the main worker takes charge of the seedling transport pot 40, which is colored in one specific color and drops the seedlings into the right transplanting claw 51, and performs auxiliary work. The person takes charge of the seedling transport pot 40 that is colored in the other specific color and drops the seedling into the left transplanting claw 51.
[0032]
The seedling transport table 39 serves as a rail on which the roller 47 rolls. In the path along which the roller 47 of the seedling transport table 39 rolls, the seedling transport table 39, that is, the seedling transport table 39 above the machine body The openings (or notches) 39a, 39b are arranged side by side in a shifted position in the left and right direction, and the openings 39a, 39b no longer support the roller 47, and the lid 45 rotates around the fulcrum pin 46 downward. By moving, the lower part of the seedling transport pot 40 is opened so that the seedling 26 falls into the transplanting part 20.
[0033]
That is, the openings 39a and 39b are opened along the transport direction in the movement locus part of the seedling transport pot 40 on the front right side of the oblong seedling transport base 39 that is long in the left-right direction. It is larger than the bottom area of the pot 40 so that the seedling can be dropped, and is opened at a position 3 or 5 pitch apart from the connected seedling transport pot 40 in the transport direction. (Strip interval).
Then, one side is set on the left and right sides with respect to the traveling direction, and the other side is set on the left and right sides so that the rollers 47 are positioned so that the rollers 47 fall. The side where the rollers 47 are not positioned is the bottom surface of the seedling transport pot 40. Although the seedlings are slightly expanded and the seedlings fall (the lid 45 can rotate downward), the rollers 47 attached to the seedling transport pots 40 adjacent to each other in the forward and backward directions are prevented from falling. That is, the openings 39a and 39b are opened to the left and right opposite sides with respect to the center line in the transport direction of the seedling transport pot 40.
[0034]
Slopes (inclined surfaces) 39c and 39c that gradually rise and are connected to the roller 47 rolling surface of the seedling carrier stand 39 at positions where the rollers 47 on the front side in the traveling direction pass in the openings 39a and 39b. Each is provided so that the lid 45 gradually closes as the roller 47 moves without being caught.
[0035]
In this way, the seedling supply unit 7 is arranged in an oval shape so that the seedling transport pots 40, 40... Are disposed in order before the main worker 23 and the auxiliary worker 24 at the rear of the machine are located, and the passage. Occasionally, the seedling 26 is inserted into the seedling transport pot 40 and rotated to specific seedling transport positions b1 and b2 (see FIG. 7), which are upper positions where the transplanting claws 51 and 51 of the transplanting part 20 in front of the seedling 26 are located. At the specific seedling transporting positions b1 and b2, the openings 47 and 47 separated by 3 pitches simultaneously fall into the openings 39a and 39b, and the lids 45 and 45 are pivoted downward to open the seedlings. The position is dropped into the transplanting claws 51 and 51 of the transplanting unit 20, and the dropping position is set as the inheriting position 50. That is, the inheritance position 50 is located on the drive side of the seedling supply unit 7 where the drive sprocket 41 is located and is located on the machine body side, so that it can be brought close to the transplanting unit 20 and the inheritance is good. Then, the rollers 47 and 47 come into contact with the slopes 39c and 39c and gradually rise to close the lids 45 and 45. Accordingly, seedlings are supplied from every other seedling transport pot 40 to one transplanting nail 51. That is, the odd-numbered seedling transport pot 40 is opened on the left (or right) of the left and right openings, and the even-numbered seedling transport pot 40 is opened on the right (or left) of the opening 45 on the lower side. The seedlings fall simultaneously into the transplanting claws 51, 51 of the left and right strips (1 and 2 or 3 and 4) by the seedling transport pot 40 and the even number of seedling transport pots 40. Therefore, it becomes possible to plant two strips at the same time, and the distance between the left and right strips can be kept constant.
[0036]
A seedling box support base 48 having a size straddling the sprockets 41 and 42 is disposed in the vicinity of the upper side of the drive sprocket 41 and the driven sprocket 42 within the inner range of the seedling transport pot 40, as shown in FIG. An additional seedling box 49 is supported on the support base 48.
[0037]
Among the seedlings 26 in the additional seedling box 49 in which the seedlings 26 are accommodated upright, the right one is taken by the main operator 23 located on the right side of the heel 25 and put into the nearby seedling transport pot 40. In addition, the left side is taken by the auxiliary worker 24 located on the left side of the basket 25 and put into the nearby seedling transport pot 40. At this time, since the additional seedling box 49 is located at a short distance from any seedling transport pot 40 of the 40 seedling transport pots 40, the general seedling boxes or additional seedlings placed on the seedling mounts 31, 31 on the left and right sides of the machine body The seedling 26 in the box 48 is supplied to the seedling transport pot 40 in an extremely short time compared to the time required to put the seedling 26 in the seedling transport pot 40.
[0038]
Next, the transplant unit 20 will be described with reference to FIGS.
A transplant part 20 is arranged behind the mission case 4 shown in FIGS. 1 and 2 in the central part of the airframe between the rear frames 2b and 2b shown in FIG. 4, and the transplant part 20 is located in the central part on the left and right sides. The left and right transplanting claws 51, 51 for transporting the seedling 26 from the inheritance position 50 shown in FIG. 5 to the heel 25, and driving the transplanting claws 51, 51 are arranged on the left and right sides, Rotary cases 52 and 52, and elevating guides 53 and 53 which are arranged on the left and right sides and serve as guide parts, and an planting drive mechanism including arms, links and the like for connecting them. The rotary case 52 and the raising / lowering guide 53 are paired and arranged on the left and right sides and fixed to the body frame 2, and the transplanting claws 51 and 51 are arranged on the left and right corresponding to these two pairs. Further, it is configured to move up and down via an elliptical trajectory in a side view below the transfer position 50.
[0039]
Each rotary case 52 is rotatably supported at one end by a fulcrum shaft 54 protruding in the horizontal direction from the body frame 2, and a sprocket 55 serving as a transmission is fixed to the outer periphery of the fulcrum shaft 54 on the left side surface of each rotary case 52. It is configured to be interlocked with the transmission case 4 through transmission means such as a chain, and the transplanting unit 20 and the seedling supply unit 7 are driven in synchronization. In addition, it can also be set as the structure transmitted with a gear etc. instead of the sprocket 55. FIG.
[0040]
Three gears are arranged in series in each rotary case 52 and meshed with each other, and an output shaft 56 projects from the other end side of each rotary case 52 to the side opposite to the sprocket 55. One end of a rotary arm 57 is fixed on the output shaft 56. Thus, the gear is set so that the rotary case 52 rotates once and the arm 57 rotates once in the opposite direction. One end of a connecting shaft 59 is fixed to the other end of the arm 57, and one side (front lower side) of the transplanting claw supports 60 and 60 as an output end of the planting drive mechanism is provided on the connecting shaft 59. It is rotatably supported via a bearing. The left and right transplanting claw supports 60 are composed of left and right vertical plates and have the same structure and the same dimensions. An open / close cam 61 is fixed on a connecting shaft 59 between the left and right vertical plates. .
[0041]
On the other side (rear side) of the transplanting nail supports 60, 60, a funnel-shaped vertical guide tube 60a is located immediately below the specific seedling transporting positions b1, b2 of the seedling supply unit 7 shown in FIG. 60a is formed so that the seedling 26 can easily enter from the transfer position 50, and the transplanting claws 51, 51 are arranged to be openable and closable below the longitudinal guide tubes 60a, 60a.
[0042]
The opening / closing mechanism of the transplantation claw 51 is provided with claw fulcrum shafts 63, 63 that are detachable from the front and rear portions of the vertical guide tube 60 a by the same distance in the horizontal and horizontal directions. The front and rear ends of the upper portion of the transplantation claw 51 are pivotally supported. At this time, each transplanted claw 51 has beak-shaped claw parts 51a, 51a configured substantially symmetrically in the front-rear direction, and each claw part 51a, 51a has a bearing part d into which a claw fulcrum shaft 63, 63 is inserted. d is formed. Each transplanted claw 51 is configured such that the lower end opening a2 of the longitudinal guide tube 60a corresponding to the transplanted claw 51 is positioned directly above the range of the upper end opening a1 formed by the claw portions 51a and 51a. The seedling 26 is stored and supported in a state in which the claw portions 51a and 51a are closed, and the seedling 26 is dropped in an open state, and above the position where the claw portions 51a and 51a are in contact with each other. The pivot guide shafts 64 and 64 are provided on the left and right sides of the vertical guide tube 60a to connect the front and rear claw portions 51a and 51a.
Then, springs 69, 69 are mounted between the pivot shafts 64, 64 and the upper part of the longitudinal guide tube 60a, and the pivot shafts 64, 64 are lifted to urge the transplanting claw 51 in the closing direction. is doing.
[0043]
One end of the abutment arm 65 is pivotally supported on the claw fulcrum shaft 63 of the claw portion 51a located on the opening / closing cam 61 side, and a roller 66 is provided on the other end of the contact arm 65 to It is comprised so that it may contact | abut. A claw opening / closing amount adjusting mechanism 67 is provided between the abutment arm 65 and the upper portion of the claw portion 51a. The claw opening / closing amount adjusting mechanism 67 is screwed between the two to rotate the bolt 68. By moving, the distance between the two is adjusted so that the momentum of the claw portion 51a can be adjusted.
[0044]
More specifically, the claw portion 51a is urged to close by the spring 69, and the tip of the abutment arm 65 located on the opposite side to the fulcrum shaft 63 is abutted against the opening / closing cam 61 to restrict the rotation. Has been. That is, the nail | claw part 51a rotates by the outer periphery shape of the opening-and-closing cam 61, and the transplanting claw 51 will be opened and closed. By configuring in this way, the transplanting claw 51 is always urged in the closing direction and controlled to be forcibly opened by the opening / closing cam 61, so that the seedling 26 can be dropped reliably.
[0045]
The front portion of the graft claw support 60 positioned on the opposite side of the rotary case 52 is extended upward to form an extended portion 60b, and the support shaft 70 is closer to the lifting guide 53 side than the extended portion 60b. The roller 71 is provided at the end of the support shaft 70 and is fitted into an elevating guide 53 arranged in the vertical direction to guide the elevating and lowering of the transplanting claw 51.
[0046]
In such a configuration, when the transplanting claw 51 is positioned at the ascending end, the claw portions 51a and 51a are closed, and when seedlings are introduced from the seedling supply unit 7 at the transfer position 50, the rotary case is driven by the power from the transmission case 4. 52 is rotated and the arm 57 is also rotated at the same time. The pair of left and right transplanting claws 51 and 51 are simultaneously lowered along the lifting guide 53, and the planting claw 51 is lowered while drawing a substantially elliptical locus.
[0047]
When the lower end position is lowered, the opening / closing cam 61 is rotated to contact the opening / closing cam 61 and the contact arm 65 is rotated to contact the small diameter portion of the opening / closing cam 61. The nail | claw part 51a is rotated centering on this, the transplanting nail | claws 51 and 51 are opened, and the seedling 26 is fall-released at the lower end position on the heel 25. When further rotated, the transplanting claws 51, 51 are raised, and the pair of left and right transplanting claws 51, 51 are simultaneously closed by the rotation of the opening / closing cam 61 in the raised position.
[0048]
Reference numeral 4a denotes a planting drive shaft that protrudes in the left-right direction from the mission case 4, and two sprockets 4a1, 4a1 are fixed in the middle of the length, and the sprockets 4a1, 4a1 are the left and right rotary cases 52, 52. Are coupled to the sprockets 55, 55 corresponding to the above through a chain. 58 is a scraper device for scraping off mud adhering to the claw portion 51a of the transplantation claw 51.
[0049]
Next, the support structure of the cover ring 22 will be described with reference to FIGS.
Stays 72, 72 project downward from the lower surfaces of the front and rear middle parts of the left and right rear frames 2 b, 2 b, and the front ends of the cover soil transport frame 73 are pivotally supported on the stays 72, 72 by a fulcrum shaft 74 to form a pivotal support part. . A lock portion 75 described later is provided in the vicinity of the pivot portion. The cover ring frame 73 has a U-shape in plan view, a handle 76 projects rearward from the rear end portion, a support stage 77 projects from the left and right central portions, and the bottom cover portion of the left and right central portions covers the soil. A fixing piece 78 having a U-shape in rear view for supporting the ring 22 is fixed.
[0050]
An intermediate support piece 79 is bolted to the lower surface of the fixed piece portion 78 so that the position of the intermediate support piece 79 can be adjusted in the front-rear direction. The intermediate support piece 79 is a grooved horizontal member 80 in close contact with the lower surface of the fixed piece portion 78. And a vertical surface member 81 fixed to the front end of the horizontal member 80. The vertical surface member 81 has a vertical surface portion 81a, a locking portion 81b formed by bending the upper side of the vertical surface portion 81a on the front side, and a front-rear direction for reinforcement formed by bending the left and right side sides backward. Surface portions 81c and 81d.
[0051]
A parallel link mechanism 82 is installed on the front surface of the vertically facing surface portion 81 via front and rear facing shafts S1 and S2 provided at two upper and lower positions in the center in the left and right direction. The parallel link mechanism 82 is capable of swinging around the longitudinal axes S1 and S2 through the longitudinal axes S1 and S2 at the center of the length of each of the plurality of left and right link members 83a and 83b arranged vertically. In addition to pivoting, the left and right sides of these left and right link members 83a and 83b are connected to each other by vertical link members 84a and 84b and a pin member 85. At this time, the vertical link members 84a and 84b are oriented substantially perpendicular to the plane along the body frame 2 shown in FIG. 1 and can be adjusted to change the position in the horizontal direction with respect to the horizontal link members 83a and 83b. . In this embodiment, the vertical link members 84a and 84b can be adjusted in the horizontal direction relative to the horizontal link members 83a and 83b, so that the pins are slightly inside the left and right ends of the horizontal link members 83a and 83b. The pin hole 85a into which the member 85 is inserted is formed. However, the present invention is not limited to this, and more pin holes may be provided in the left and right direction, or the vertical link members 84a and 84b may be left and right. There is no problem even if the position of the link members 83a and 83b can be changed continuously.
[0052]
The center portions of the upper sides of the inverted U-shaped arm members 86a and 86b are fixed to the vertical link members 84a and 84b, and the coupling piece 87 is fixed to each arm end of the inverted U-shaped arm members 86a and 86b. The shaft support arm piece 88 is bolted to the coupling piece 87 so that the position of the shaft support arm 88 can be adjusted in the left-right direction, and one cover ring 22 is rotatably supported on the axle 89 fixed to the front end of the shaft support arm piece 88. I am letting. At this time, the left inverted U-shaped arm member 86a is positioned directly behind the left graft nail 51 (FIG. 2), and the right inverted U-shaped arm member 86b is positioned directly behind the right graft nail 51 (FIG. 2). . A pair of earthen rings 22 and 22 fixed oppositely to a pair of left and right arm ends of each inverted U-shaped arm member 86a and 86b constitutes one earthen ring group 22A, and each earthen ring group 22A has its corresponding transplanting nail. It acts to cover the stock of the seedling 26 while suppressing the soil on the left and right sides of the row of 51 seedlings 26 planted.
[0053]
In the above-described support structure for the cover ring 22, when one side cover ring set 22 A is displaced up and down, the other side cover ring set 22 A operates so as to be vertically displaced in the reverse direction via the parallel link mechanism 82. At this time, each cover ring set 22A is moved in a substantially gravity direction (vertical direction) as long as the body frame 2 is horizontal. Then, the locking portion 81b abuts on the left-right link member 83a that is largely swung about the front-rear axes S1 and S2, and restricts the deformation of the parallel link mechanism 82 to a certain limit or less. In the state where the vertical link members 84a and 84b are attached to the left and right ends of the horizontal link members 83a and 83b, the horizontal center points of the left and right inverted U-shaped arm members 86a and 86b, respectively. On the other hand, in the state where the distance between P1 and P2 is 22 cm, and each of the vertical link members 84a and 84b is attached to 85 pin holes slightly inside the left and right ends of the left and right link members 83a and 83b, The distance between the left and right width center points P1 and P2 is 20 cm. When the distance between the left and right center points P1 and P2 is 20 cm, the transplanting claws 51 and 51 corresponding to the inverted U-shaped arm members 86a and 86b are also moved inward in the left and right direction.
[0054]
A pivot shaft 90 is provided in the left-right direction above the support stage 77, and one side of a guide rod 91 serving as an extending member is slidably inserted into the pivot shaft 90. On the upper and lower guide rods 91, springs 92a and 92b serving as urging members are fitted. The other end of the guide rod 91 is rotatably supported by a fulcrum shaft 93 at the rear portion of the handle frame 6 (medium frame 6M).
With this configuration, the soil covering 22 is biased so as to be pressed downward by the biasing force of the spring 92b. When the earthen ring 22 is lifted by holding the handle 76 at the end of the work or turning, if the pivot shaft 90 is positioned above the line connecting the fulcrum shafts 74 and 93, the dead point is exceeded. The cover ring 22 can be maintained in the raised position.
[0055]
Next, the structure of the lock part 75 for locking the cover ring 22 in the raised position is demonstrated using FIG. 12, FIG. A lock portion 75 is provided in the vicinity of the fulcrum shaft 74. The lock portion 75 pivotally supports one end of a lock arm 95 by a pivot shaft 94 on the rotation base portion side of the cover-carrying frame 73, and on the other side of the lock arm 95 in the longitudinal direction and above (with respect to the fulcrum shaft 74). An L-shaped long hole 95a extending in the radial direction is formed. On the other hand, a locking pin 96 projects above the stage 72 of the chassis (rear frame 2b) so that the locking pin 96 is It is inserted into the hole 95a.
[0056]
Further, one end of a wire 97 and a spring 98 is connected to the other end (upper end) of the lock arm 95, and the other end of the spring 98 is connected to the front rear frame 2b so that the lock arm 95 is rotated forward. The other end of the wire 97 is connected to an arm 99 provided at the rotating base of the lift lever 32. The lift lever 32 is further connected to a hydraulic valve operation lever provided near the engine 3 shown in FIG. 1 via a wire or the like (not shown), and the hydraulic cylinder 19 shown in FIG. The aircraft can be raised and lowered.
[0057]
In such a configuration, when the handle 76 is lifted to raise the cover soil transport 22, the lock arm 95 is also lifted, the locking pin 96 is lowered with respect to the long hole 95 a, and the cover soil transport 22 is in the raised position. When the dead center is exceeded and the lifted position is reached, the locking pin 96 enters the vertical portion 95b of the elongated hole 95a, and the lock arm 95 is urged downward by the pulling force of the spring 98. Is maintained in the vertical portion 95b of the long hole 95a, and even if the cover ring 22 tries to rotate downward due to its own weight, the force of the spring 92b, etc., the locking pin 96 is engaged with the vertical portion 95b and cannot rotate. The earth covering ring 22 is locked in the raised position.
[0058]
When the lifting lever 32 is pivoted forward so that the machine body is lowered at the start of work or when the work is resumed after turning, the wire 97 is pulled and the lock arm 95 is resisted against the spring 98 force. As a result of this rotation, the inner surface of the elongated hole 95a is moved obliquely upward with respect to the locking pin 96 to allow the downward movement of the cover ring frame 73, whereby the cover ring frame 73 is related to this. Due to the weight of the member, the force of the spring 92b, etc., it passes through the part beyond the dead point and descends, and the soil covering 22 is lowered until it is grounded. That is, the cover ring 22 is lowered in conjunction with the lowering operation of the elevating lever 32.
[0059]
When the earth covering ring 22 is grounded, the weights of the members supported by it act on the longitudinal axes S1 and S2, and the earth covering ring groups 22A and 22A are displaced up and down while maintaining the standing posture with respect to the body frame 2. The vertical position is determined in a state where each of them touches the upper surface of the flange 25, and thereafter, half of the downward force acting on the longitudinal axes S1 and S2 is shared. As shown in FIG. 13, the respective covering rings 22 in the ground covering ring sets 22 A and 22 A have a substantially horizontal surface, and the right and left sides of the row of seedlings 26 planted by the corresponding transplanting claws 51 are left and right. The soil of the seedling 26 is covered with soil while suppressing the nearby ground. At this time, since each earthen ring 22 suppresses the ground in the direction of gravity, even if the upper surface of the heel 25 is inclined, the seedling 26 is not perpendicular to the inclined ground, and is planted in an upright state in the direction of gravity. Become.
When the center of the pair of covering rings 22 and 22 of the seedling 26 planted with the transplanting claws 51 and 51 is not located directly behind the seedling 26, each covering soil for the row of seedlings 26 is provided. The right and left positions of the wheel 22 may not be appropriate. In such a case, the right and left positions of the shaft support arm piece 88 with respect to the coupling piece 87 at each arm end of the inverted U-shaped arm members 86a and 86b are fastened with bolts. Adjust by relaxing operation.
When the front / rear position of the corresponding cover ring set 22A is not appropriate for the seedling 26 planted by the transplanting claws 51, 51, the front / rear position of the intermediate support piece 79 relative to the fixed piece 78 is changed / adjusted by loosening / fastening the bolt. To do.
[0060]
In this embodiment, two-row planting is used, but it is also possible to add four pairs of transplanting claws 51 and their driving mechanisms in the left-right direction to form four-row planting. At this time, the two left and right link members 83a and 83b are installed in the same manner as described above via the two upper and lower longitudinal axes S1 and S2 on the vertical surface portion 81a, and the left and right link members 83a and 83b are installed. Four vertical link members are mounted at appropriate intervals in the left-right direction, and the cover ring ring set 22A is supported by each of the vertical link members, or the two vertical link members of the cover ring frame 73 are vertically oriented. A surface portion 81a is formed, and a pair of soil covering ring groups 22A that cover the adjacent two seedlings 26 are attached to each longitudinally facing surface portion 81a according to the above.
[0061]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
That is, according to the first aspect, a relative lateral inclination change between the airframe frame 2 and the ground occurs, and the height from the ground to the airframe frame 2 at the position where each cover ring set 22A is present changes. In this case, the ground in the vicinity of the left and right sides of the row of the seedlings 26 planted by the transplanting nails 51 and 51 can be pressed down toward the horizontal circumferential surface of each covering ring 22 in the direction of gravity. , The ground on the higher side of the left and right ground of the seedling 26 immediately after being planted in 51 can be pressed down in the direction of gravity with a large force, and the ground around the seedling 26 can be leveled. The seedling 26 after the transplantation can be erected in the direction of gravity.
[0062]
According to the second aspect of the invention, in addition to the effect of the invention of the first aspect, the following effect can be obtained. That is, the cover ring 22 supporting structure having the parallel link mechanism 82 is provided. In addition to making the parallel link mechanism 82 less likely to interfere with the seedlings 26 planted on the ground, it is possible to reduce the size of the parallel link mechanism 82. It can be easily implemented in a transplanter.
[0063]
According to the third aspect of the invention, in addition to the effect of the invention of the first aspect, the following effect can be obtained, that is, when the interval between the plurality of seedlings 26 is changed. It is necessary to change the left-right distance between the left and right cover ring sets 22A and 22A. This change is made by positioning the assembly formed by attaching the pair of left and right cover ring rings 22 and 22 to the inverted U-shaped arm members 86a and 86b. By changing, it becomes possible to carry out easily, and the inverted U-shaped arm members 86a, 86b can be made difficult to interfere with the seedlings 26 planted by the transplanting claws 51, 51 corresponding thereto.
[0064]
According to the invention described in claim 4, in addition to the effect of the invention described in claim 3, the following effect can be obtained. Are aligned in the left-right direction by adjusting the left and right cover rings 22, 22 of the cover ring set 22 A in the left-right direction, so that the pair of cover rings 22, 22 of the cover ring set 22 A It can be positioned at an optimum position with respect to the row, and the exact position of the ground in the vicinity of the row of the seedlings 26 planted by the transplanting claws 51 and 51 can be suppressed and covered with the seedlings 26.
[0065]
According to the fifth aspect, in addition to the effect of the invention according to the second aspect, the following effect can be obtained, that is, a plurality of seedlings 26 planted by the transplanting nails 51, 51. When the spacing between the strips is relatively large, the left and right covering soil ring groups 22A, 22A can be positioned at the optimal position in the left-right direction with respect to the corresponding row of seedlings 26. The seedling 26 can be covered with soil by suppressing the exact position of the ground on the left and right sides of the stock.
[0066]
According to the sixth aspect, in addition to the effects of the first aspect of the invention, the following effects can be obtained, that is, the covering ring ring 22A for the seedlings 26 planted on the ground. The front-rear position can be adjusted to the optimum state, and the adjustment is performed by changing the position of the parallel link mechanism 82 with respect to the cover ring frame 73, and it is not necessary to change the position of each cover ring 22 independently. Can be made.
[0067]
According to the seventh aspect of the invention, in addition to the effect of the invention of the sixth aspect, the following effect can be obtained, that is, by moving the single cover ring frame 73 up and down. All the covering rings 22 can be displaced up and down in a specific direction with respect to the airframe, and the front and rear positions of the covering ring group 22A with respect to the seedlings 26 planted on the ground can be changed by changing the front and rear positions of the intermediate support pieces 79. It can be aligned to the optimum state.
[0068]
According to the eighth aspect of the present invention, the following effect can be obtained in addition to the effect of the seventh aspect of the present invention. That is, the cover ring sets 22A and 22A are moved to the front and rear axes S1 and S2. Is moved symmetrically up and down symmetrically, and the exact position of the ground on the left and right sides of the two seedlings 26 adjacent to each other in the left-right direction is reduced in the direction of gravity, so that the seedlings 26 are accurately covered with soil. Can do.
[0069]
According to the ninth aspect of the present invention, the left and right cover ring sets 22A, 22A can be configured not to be displaced up and down more than necessary by a simple mechanism, especially when the cover ring 22 is not used. It can be prevented from descending and grounding.
[0070]
According to the tenth aspect, the plurality of left and right link members 83a and 83b and the vertical link members 84a and 84b as support pieces form the parallel link mechanism 82, and the invention according to the first aspect. The single cover ring frame 73 vertically displaces all the cover rings 22 in a specific direction with respect to the airframe, and the left and right cover ring groups 22A and 22A have the longitudinal axis S1. , S2 is symmetrically moved up and down in the opposite direction, so that the ground on the left and right sides of the stock of the two adjacent seedlings 26 in the left and right direction is pressed down in the direction of gravity and the ground on the left and right sides of the seedling 26 Can be covered with soil so that they are exactly on the same horizontal plane.
[0071]
According to the eleventh aspect, in addition to the effect of the invention according to the tenth aspect, the following effect can be obtained, that is, the left and right covering ring groups 22A and 22A are moved upward. It can be changed by changing the position of the downward link members 84a and 84b, and can easily correspond to the change in the distance between the rows of the adjacent seedlings 26.
[Brief description of the drawings]
FIG. 1 is a side view showing an overall configuration of a walking type vegetable transplanter according to an embodiment of the present invention.
FIG. 2 is a plan view of the same.
FIG. 3 is a side view of the fuselage frame 2 and a mission case part.
FIG. 4 is a plan view of a part of an airframe frame 2;
FIG. 5 is a plan view of a seedling supply unit.
FIG. 6 is a rear cross-sectional view of the inheriting portion.
FIG. 7 is a plan view of the same.
FIG. 8 is a rear view of the transplanted portion.
FIG. 9 is a side view of the same.
FIG. 10 is a plan view of the same.
FIG. 11 is a side cross-sectional view of a graft nail.
FIG. 12 is a side view of the pressure wheel support portion.
FIG. 13 is a rear view of the pressure wheel portion.
FIG. 14 is an enlarged side view of a pressing wheel support portion.
FIG. 15 is an enlarged view showing a part of FIG. 14;
FIG. 16 is an enlarged rear view of the suppression wheel portion.
FIG. 17 is an enlarged view showing a part of FIG. 16;
[Explanation of symbols]
2 Airframe frame
22 Covered ring
22A earthen ring set
25 畦 (ground)
26 Seedling
79 Intermediate support piece
81b Locking part
82 Parallel link mechanism
83a Left-right link member
83b Left-right link member
86a Inverted U-shaped arm member
86b Inverted U-shaped arm member
S1 Longitudinal axis
S2 Axial axis

Claims

A plurality of seedlings are planted on the ground simultaneously in parallel, and the ground on both the left and right sides of the seedlings of each seedling planted in this way is suppressed by a cover ring set consisting of a pair of left and right cover rings. A vegetable transplanting machine configured to cover soil on a stock, wherein the soil covering ring group is supported through a parallel link mechanism.

A plurality of seedlings are planted on the ground simultaneously in parallel, and the ground on both the left and right sides of the seedlings of each seedling planted in this way is suppressed by a cover ring set consisting of a pair of left and right cover rings. In a vegetable transplanting machine that covers the stock, a parallel link mechanism that swings and deforms along the standing surface in the horizontal direction is installed in the machine frame, and the cover ring is supported at the lower left and right ends of the parallel link mechanism. A vegetable transplanter that is characterized by

A plurality of seedlings are planted on the ground simultaneously in parallel, and the ground on both the left and right sides of the seedlings of each seedling planted in this way is suppressed by a cover ring set consisting of a pair of left and right cover rings. In the vegetable transplanting machine that is supposed to cover the stock, a parallel link mechanism is formed on the machine body frame, and a cover ring group consisting of the pair of left and right cover ring rings is connected to the parallel link mechanism via an inverted U-shaped arm member. A vegetable transplanting machine characterized by being supported.

4. The vegetable transplanter according to claim 3, wherein one soil covering ring is supported at each arm end of the inverted U-shaped arm member so as to be capable of adjusting the position in the left-right direction.

A plurality of seedlings are planted on the ground simultaneously in parallel, and the ground on both the left and right sides of the seedlings of each seedling planted in this way is suppressed by a cover ring set consisting of a pair of left and right cover rings. In a vegetable transplanting machine that covers the stock, a parallel link mechanism that swings and deforms along the standing surface in the left-right direction is formed in the machine frame, and the position change adjustment of the cover ring in the left-right direction is performed on the parallel link mechanism A vegetable transplanter characterized by being supported as possible.

A plurality of seedlings are planted on the ground simultaneously in parallel, and the ground on both the left and right sides of the seedlings of each seedling planted in this way is suppressed by a cover ring set consisting of a pair of left and right cover rings. In the vegetable transplanting machine configured to cover the stock, a parallel link mechanism for supporting the cover ring is formed, and the parallel link mechanism is adjustable in the front-rear position with respect to the body frame. Vegetable transplanter.

Two seedlings adjacent in the left-right direction are planted on the ground simultaneously in parallel, and the ground on the left and right sides of the seed stock of each seedling planted in this way is suppressed with a pair of left and right cover rings. In the vegetable transplanting machine configured to cover the stock, an intermediate support piece is mounted on the cover ring frame mounted on the machine frame so as to be vertically displaceable so that the front and rear positions can be adjusted, and the cover ring is attached to the intermediate support piece. A vegetable transplanting machine equipped with a parallel link mechanism for supporting the rice.

Two seedlings adjacent in the left-right direction are planted on the ground simultaneously in parallel, and the ground on the left and right sides of the seed stock of each seedling planted in this way is suppressed with a pair of left and right cover rings. In the vegetable transplanting machine configured to cover the stock, an intermediate support piece is mounted on the cover ring frame mounted on the machine frame so as to be vertically displaceable so that the front and rear positions can be adjusted, and the cover ring is attached to the intermediate support piece. A vegetable transplanter characterized in that the center portion of the length of the left-right link member of the parallel link mechanism for supporting the lip is supported so as to be swingable about the front-rear axis.

The vegetable transplanting machine according to claim 8, wherein a locking portion for restricting the swing of the left-right link member within a certain range is formed on the intermediate support piece.

Two seedlings adjacent in the left-right direction are planted on the ground simultaneously in parallel, and the ground on the left and right sides of the seed stock of each seedling planted in this way is suppressed with a pair of left and right cover rings. In the vegetable transplanting machine that is to cover the stock, the center portion of each of the plurality of left and right link members arranged vertically is arranged on the covering ring frame that is mounted on the body frame so as to be vertically displaceable. A vegetable transplantation characterized in that it is pivotally pivotable about a longitudinal axis, and a vertical link member for supporting the pair of left and right cover rings is mounted on the left and right sides of the plurality of horizontal link members. Machine.

Two seedlings adjacent in the left-right direction are planted on the ground simultaneously in parallel, and the ground on the left and right sides of the seed stock of each seedling planted in this way is suppressed with a pair of left and right cover rings. In the vegetable transplanting machine that is to be covered with the stock, on the covering soil ring frame that is mounted on the body frame so as to be vertically displaceable, the center points of the length of each of the plurality of right and left link members arranged vertically The left and right sides of these left and right link members are pivotally attached to each other so as to be swingable around the direction axis, and the end portions are connected to each other by a vertical link member on which a pair of left and right cover rings are mounted. Each of the members is mounted on the left and right link member so that the position in the left and right direction can be changed.