JP4160425B2 - Transplanter - Google Patents

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Publication number
JP4160425B2
JP4160425B2 JP2003066508A JP2003066508A JP4160425B2 JP 4160425 B2 JP4160425 B2 JP 4160425B2 JP 2003066508 A JP2003066508 A JP 2003066508A JP 2003066508 A JP2003066508 A JP 2003066508A JP 4160425 B2 JP4160425 B2 JP 4160425B2
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Japan
Prior art keywords
pressure
seedling
planting depth
support
ring
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JP2003066508A
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Japanese (ja)
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JP2004275002A (en
Inventor
幸信 石原
英夫 中島
健介 大前
貴保 坂垣内
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Yanma Agricultural Equipment Co Ltd
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Yanma Agricultural Equipment Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、移植機に関する。
【0002】
【従来の技術】
従来、移植機の一形態として、走行部と、同走行部の後部に配設した苗供給部と、同苗供給部の前方位置に配設した苗移植部とを装備すると共に、同苗移植部には覆土輪に支持されてフローティング機能を有する植付機構を設けたものがある(例えば、特許文献1参照)。
【0003】
そして、かかる移植機では、畝面に沿って転動する覆土輪が、同畝面の凹凸形状に沿って昇降し、それに連動してフローティング機能を有する植付機構も昇降して、移植する苗の植付深さが一定に保持されるようにしている。
【0004】
また、植付機構は連結体を介して覆土輪に支持されており、同覆土輪は植付機構よりも後方位置に配置されて、同植付機構により畝面上に植え付けられた苗に覆土するようにしている。
【0005】
【特許文献1】
特開平5−276809号公報
【0006】
【発明が解決しようとする課題】
ところが、上記した移植機では、連結体の植付機構への連結位置と、同植付機構よりも後方位置に配置された覆土輪との間の間隔が大きいために、覆土輪の昇降量と、同覆土輪に連動して昇降する植付機構の昇降量とが一対一対応しておらず、そのために、かかる昇降量の差異の調整を機械的に行っているが、構造が複雑な上に精度の良い調整が行えないという不具合がある。
【0007】
【課題を解決するための手段】
そこで、本発明では、昇降機能を有する走行部と、同走行部の後部に配設した苗供給部と、同苗供給部の前方位置に配設した苗移植部とを装備する移植機において、走行部に、苗移植部の下方近傍に配置して苗移植面を鎮圧すると共に昇降センサとしても機能する鎮圧輪と、移植苗に覆土する覆土輪とを設けて、上記鎮圧輪の検出結果に基づいて走行部を昇降させることにより、苗移植部による苗植付深さを一定に制御可能となすと共に、センシング時の鎮圧輪と機体との相対位置を調節して植付深さを調節する植深調節手段を設ける一方、覆土輪に所要の覆土圧を設定・付与する覆土圧設定・付与手段を設け、同覆土圧設定・付与手段を前記植深調節手段に連動連結して、同植深調節手段の植深調節に連動して覆土輪も上下動して、覆土圧が設定圧に保持されるようにしたことを特徴とする移植機を提供するものである。
【0008】
また、本発明は、鎮圧輪に覆土輪支持体を介して覆土輪を連結すると共に、同覆土輪及び覆土輪支持体の分担荷重を鎮圧輪に下降荷重として作用させるようにしたことにも特徴を有する。
【0009】
【発明の実施の形態】
以下に、本発明の実施の形態について説明する。
【0010】
すなわち、本発明に係る移植機は、基本的構造として、昇降機能を有する走行部と、同走行部の後部に配設した苗供給部と、同苗供給部の前方位置に配設した苗移植部とを装備している。
【0011】
そして、特徴的構造として、走行部に、苗移植部の下方近傍に配置して苗移植面を鎮圧すると共に昇降センサとしても機能する鎮圧輪と、移植苗に覆土する覆土輪とを設けて、上記鎮圧輪の検出結果に基づいて走行部を昇降させることにより、苗移植部による苗植付深さを一定に制御可能となすと共に、同鎮圧輪のセンシング位置を調節して植付深さを調節する植深調節手段を設ける一方、覆土輪に所要の覆土圧を設定・付与する覆土圧設定・付与手段を設け、同覆土圧設定・付与手段を前記植深調節手段に連動連結して、同植深調節手段の植深調節に連動して覆土輪も上下動して、覆土圧が設定圧に保持されるようにしている。
【0012】
しかも、鎮圧輪に覆土輪支持体を介して覆土輪を連結すると共に、同覆土輪及び覆土輪支持体の分担荷重を鎮圧輪に下降荷重として作用させるようにしている。
【0013】
【実施例】
以下に、本発明の実施例を、図面を参照しながら説明する。
【0014】
図1に示すAは、本発明に係る移植機であり、同移植機Aは、走行部1と、同走行部1の後部に配設した苗供給部2と、同苗供給部2の前方位置に配設した苗移植部3とを具備して、走行部1を圃場Gにて自走させながら、苗供給部2から供給されるポット苗(図示せず)を苗移植部3により圃場Gの畝面Uに移植するようにしている。
【0015】
走行部1は、機体フレーム4の前部に左右一対の前車輪支持アーム5,5を介して前車輪6,6を取り付けると共に、後部に左右一対の後車輪支持アームとしての後車輪駆動ケース7,7を介して後車輪8 ,8を取り付けており、これら前・後車輪6,6,8,8は、昇降機構(図示せず)に連動連結して、同昇降機構が昇降センサとしても機能する後述の鎮圧輪101の畝面Uに沿った昇降動作量に基づいて、前・後車輪6,6,8,8を昇降させることにより、苗移植部3によるポット苗の植付深さを一定に保持することができるようにしている。
【0016】
そして、機体フレーム4上の前部にエンジン10を搭載し、同エンジン10の後方位置にミッションケース11を配設すると共に、同ミッションケース11をエンジン10に連動連結し、同ミッションケース11に上記後車輪駆動ケース7,7と前記苗供給部2と苗移植部3とを連動連結している。12はボンネット、13は予備苗載台である。
【0017】
また、機体フレーム4の後端部には、図1及び図2に示すように、支持体14を介して左右一対のハンドル支持フレーム15,15を後上方へ向けて延設し、両ハンドル支持フレーム15,15の後端部に平面視U状に形成したハンドル16を取り付けており、同ハンドル16の下部間に下部レバーガイド支持体17を架設し、同下部レバーガイド支持体17に植深兼鎮圧調節レバーガイド体18と株間調節レバーガイド体19と主変速レバーガイド体20とを左右方向に隣接させて配置し、各レバーガイド体18,19,20を介して植深兼鎮圧調節レバー117と株間調節レバー22と主変速レバー23とを配設している。
【0018】
そして、ハンドル16の上部間に上部レバーガイド支持体24を架設し、同上部レバーガイド支持体24の左側部に植付クラッチレバーガイド体25を配置する一方、右側部に昇降レバーガイド体26を配置して、各レバーガイド体25,26を介してそれぞれ植付クラッチレバー27と昇降レバー28とを配設している。
【0019】
苗供給部2は、図1及び図2に示すように、左右一対のハンドル支持フレーム15,15の中途部間に配設しており、苗トレイTを縦搬送する縦搬送機構35と、同縦搬送機構35を横搬送する横搬送機構36とを装備している。
【0020】
縦搬送機構35は、図1に示すように、縦方向及び横方向に整然と苗ポットPを形成した苗トレイTを、前下方へ向けて苗ポットPの間隔毎に縦搬送して、後述する苗移植部3により苗ポットP中のポット苗(図示せず)を畝面Uに移植し、空になった苗トレイTは後上方へ折り返し状に搬送するようにしている。
【0021】
横搬送機構36は、図1及び図2に示すように、縦搬送機構35の下方に配置しており、左右方向に軸線を向けて縦搬送機構35に連動連結した横送り軸37と、同横送り軸37の中途部に連動連結すると共に、同横送り軸37を軸線方向に横移動させる横移動体38とを具備して、同横送り軸37の外周面には、螺旋状の横送り溝37aを形成している。
【0022】
そして、図1に示すように、横搬送機構36と縦搬送機構35との間には縦送り連動機構39を介設しており、同縦送り連動機構39は、横搬送機構36が一側端部まで横移動した際に、縦搬送機構35を一方向にのみ一定量だけ回転させて、苗トレイTを苗ポットPの一段分だけ縦送りするようにしている。
【0023】
このようにして、苗トレイTに形成した苗ポットPの横一列分だけ横移動させた後に、苗ポットPの一段分だけ縦送りし、再度、横一列分だけ横移動させた後に、苗ポットPの一段分だけ縦送りするという作動を繰り返すようにしている。
【0024】
苗移植部3は、図1に示すように、苗供給部2の苗トレイTからポット苗(図示せず)を取り出す苗取出機構71と、同苗取出機構71により取り出されたポット苗を受けて畝面Uにポット苗を植え付ける植付機構72とを具備している。
【0025】
そして、苗取出機構71は、図1に示すように、後述する駆動ケース29に苗取出伝動チェン73を介して連動連結した苗取ロータケース74と、同苗取ロータケース74に連動連結した開閉カム75と、同開閉カム75により開閉作動される左右一対の苗取出爪76,76とを具備している。
【0026】
植付機構72は、図1及び図2に示すように、走行部1に設けたミッションケース11に、植付入力軸77を介して植付伝動ケース80の前端部を連動連結し、同植付伝動ケース80の後端部に植付ロータケース81を連動連結し、同植付ロータケース81にクランクアーム160の基端部を連動連結し、同クランクアーム160の先端部に枢支・連結ピン161を介してL字状支持体162の折れ曲がり部163を枢支・連結し、同L字状支持体162の後端部に開孔器としての植付爪83を取り付けると共に、折れ曲がり部163と植付爪83との間に開閉カム機構82を介設する一方、同L字状支持体162の上端部にガイドローラ枢支ピン164を介してガイドローラ165を転動自在に取り付けている。
【0027】
しかも、右側のハンドル支持フレーム15の前端部に、上下方向に伸延するスライドガイド体166を取り付け、同スライドガイド体166に上下方向に伸延するスライドガイド溝167を形成して、同スライドガイド溝167中に上記ガイドローラ165を摺動自在に嵌合させている。
【0028】
また、駆動ケース29は、図1に示すように、ミッションケース11の後上方位置に配設しており、同ミッションケース11の入力兼出力軸85と駆動ケース29の入力軸86との間に変速伝動ベルト機構87と伝動チェン機構88とを介設している。
【0029】
また、図1に示すように、植付機構72の下方近傍において、ミッションケース11の後側下部には、左右一対の鎮圧輪支持アーム100,100を介して鎮圧輪101を上下昇降自在に取り付けており、同鎮圧輪101は、苗移植面を鎮圧すると共に昇降センサとしても機能するようにしている。
【0030】
すなわち、図3及び図4にも示すように、ミッションケース11の後下部に、左右方向に軸線を向けた固定ボルト102,102を介して左右一対の支持板体103,103を取り付け、両支持板体103,103の下部間に、左右方向に軸線を向けた支軸104を貫通状態に横架し、同支軸104の左右側端部に平面視U字状の枢支ブラケット105,105を取り付け、各枢支ブラケット105,105にそれぞれ左右方向に軸線を向けた枢支ピン106 ,106を介して左・右側回動板体107,108を枢支して取り付け、両左・右側回動板体107,108間に左右方向に軸線を向けた回動支軸109を貫通状態に横架し、同回動支軸109に前記左右一対の鎮圧輪支持アーム100,100の基端部を枢支し、両鎮圧輪支持アーム100,100の先端部間に回転支軸110を介して鎮圧輪101を回転自在に取り付けている。
【0031】
そして、図1、図3及び図4に示すように、左右一対のハンドル支持フレーム15,15間には覆土圧設定・付与手段111を設け、同覆土圧設定・付与手段111と前記鎮圧輪10 1との間に前後方向に伸延する覆土輪支持体112を架設して、同覆土輪支持体112に移植苗に覆土する左右一対の覆土輪113,113を取り付けている。
【0032】
すなわち、覆土輪支持体112は、前後方向に伸延する左右一対の前後伸延支持片114,114と、左右方向に伸延して両前後伸延支持片114,114の後端を接続する左右伸延片115とから平面視U字状に形成しており、前後伸延支持片114,114の前端部を前記回動支軸109の左右側端部に枢支・連結する一方、左右伸延片115の中央部を前記覆土圧設定・付与手段111に連結し、各前後伸延支持片114,114の後部にそれぞれ左右方向に軸線を向けた覆土輪支軸116,116を介して覆土輪113,113を回転自在に取り付けている。
【0033】
覆土圧設定・付与手段111は、図1、図3及び図4に示すように、左右一対のハンドル支持フレーム15,15に取り付けた後述の植深兼鎮圧調節レバー117と、前記覆土輪支持体112の左右伸延片115の中央部に取り付けた取付片118との間に介設している。
【0034】
すなわち、覆土圧設定・付与手段111は、左右一対のハンドル支持フレーム15,15に、左右一対の支持体120,120を介して左右方向に軸線を向けた支持軸体121をその軸線廻りに回動自在に横架し、同支持軸体121の左側部に枢支片122を取り付け、同枢支片122に上下方向に軸線を向けた枢支ピン123を介して前記植深兼鎮圧調節レバー117の基端部を取り付けて、植深兼鎮圧調節レバー117を、支持軸体121を中心に上下回動自在かつ枢支ピン123を中心に左右回動自在となしている。
【0035】
そして、支持軸体121の右側部には左右一対の支持アーム124,124の基端部を取り付け、両支持アーム124,124の先端部間に連設片125を横架し、左右一対の支持アーム124,124間にリング状に形成したスプリング受体127を配置すると共に、同スプリング受体127を上記連設片125に連設する一方、同スプリング受体127中に上下方向に伸延する筒体126を上下摺動自在に挿通すると共に、同筒体126の上端部に突設した下降規制片139をスプリング受体127の上端面に当接・係止させて、同筒体126の下方への摺動を規制する一方、同スプリング受体127の下端面と筒体126の下部に取り付けた覆土圧調節体128との間に、覆土圧付与スプリング129を筒体126の外周面に巻回して介在させている。
【0036】
しかも、筒体126中に支持ロッド130を挿通して、同支持ロッド130の下端部に前記取付片118を介して左右伸延片115を取り付け、同支持ロッド130と筒体126の下端との間に覆土圧調節体128を介設している。149は取付ピンである。
【0037】
すなわち、覆土圧調節体128は、中央部に支持ロッド貫通孔(図示せず)を形成した上・下部片131,132と、両上・下部片131,132の端部同士を連結する連結片133と、中央部に支持ロッド貫通孔(図示せず)を形成して上・下部片131,132間に配置した固定片134と、同固定片134の一端135を連結片133に係止して、同固定片134と下部片132との間にて支持ロッド130の外周面に巻回して介設した押圧スプリング136とを具備している。
【0038】
このようにして、連結片133に一端135が係止された固定片134の他端137を、押圧スプリング136の弾性押圧力に抗して下方へ押圧して、同固定片134を略水平状態となすことにより、覆土圧調節体128と一体的に筒体126を支持ロッド130に沿わせて上下スライド自在となすことができる。
【0039】
そして、所望の位置にて固定片134の他端137への押圧力を解除すると、連結片133に一端135が係止された固定片134を押圧スプリング136が押し上げて、同固定片134を傾斜状態となし、同固定片134を支持ロッド130の外周面に固定させることができる。
【0040】
従って、固定片134を介して筒体126を上下スライド位置調節することができて、同筒体126とスプリング受体127との間に介設した覆土圧付与スプリング129を収縮調節して、同覆土圧付与スプリング129が覆土輪113,113に付与する覆土圧を任意(無段階)に調節して所要の設定圧に設定することができる。
【0041】
上記のような構成において、本発明の要旨は、上記鎮圧輪101の検出結果に基づいて走行部1を昇降させることにより、苗移植部3による苗植付深さを一定に制御可能となすと共に、同鎮圧輪101のセンシング位置を調節して植付深さを調節する植深調節手段140を設ける一方、覆土輪113,113に所要の覆土圧を設定・付与する前記覆土圧設定・付与手段111を設け、同覆土圧設定・付与手段111を前記植深調節手段140に連動連結して、同植深調節手段140の植深調節に連動して覆土輪113,113も上下動して、覆土圧が設定圧に保持されるようにしたことにある。
【0042】
すなわち、植深調節手段140は、図3及び図4に示すように、右側の鎮圧輪支持アーム100の基端部に前上方へ向けて伸延する作動アーム141の基端部を一体的に連設する一方、前記覆土圧設定・付与手段111に設けた支持軸体121の左側部に後下方へ向けて伸延する作用アーム142の基端部を連設して、同作用アーム142の先端部と上記作動アーム141の先端部との間に植深調節連動機構としての植深調節ワイヤ143を介設している。144はアウタワイヤ、145はインナワイヤ、146,147はアウタ受体である。
【0043】
そして、右側回動板体108の中途部と右側の鎮圧輪支持アーム100の外側面中途部との間には引張スプリング148を介設して、鎮圧輪101を上方へ回動付勢している。
【0044】
このようにして、図3に示す側面視にて、支持軸体121を中心に植深兼鎮圧調節レバー117を反時計廻りである上方へ回動操作(調節)すると、同支持軸体121の左側端部に取り付けた作用アーム142が支持軸体121を中心に反時計廻りに回動すると共に、インナワイヤ145を後方へ引張し、それに連動して作動アーム141が引張スプリング148の弾性付勢力に抗して回動支軸109を中心に時計廻りに回動して、同回動支軸109を中心に鎮圧輪101を下方へ回動(下降)調節することができる。
【0045】
この際、支持軸体121に基端部を取り付けている支持アーム124,124が、支持軸体121を中心に反時計廻りに回動して、連設片125と覆土圧設定・付与手段111と覆土輪支持体112とを介して覆土輪113,113も下降させることができる。
【0046】
また、反対に、植深兼鎮圧調節レバー117を支持軸体121を中心に下方へ回動操作(調節)すると、同支持軸体121の左側端部に取り付けた作用アーム1 42が支持軸体121を中心に時計廻りに回動すると共に、インナワイヤ145を弛緩させため、作動アーム141が引張スプリング148の弾性付勢力により回動支軸109を中心に反時計廻りに回動されて、鎮圧輪101を回動支軸109を中心に上方へ回動(上昇)調節することができる。
【0047】
この際、支持軸体121に基端部を取り付けている支持アーム124,124が、支持軸体121を中心に時計廻りに回動して、連設片125と覆土圧設定・付与手段111と覆土輪支持体112とを介して覆土輪113,113も上昇させることができる。
【0048】
ここで、覆土輪113,113は、植深兼鎮圧調節レバー117による植深調節に連動して上下動するが、覆土圧は設定圧に保持されるようにしている。
【0049】
また、覆土輪支持体112の前端部は、鎮圧輪101を支持している回動支軸109に取り付けて、同鎮圧輪101に覆土輪113,113及び覆土輪支持体112の分担荷重を下降荷重として作用させるようにしている。
【0050】
従って、覆土輪113,113及び覆土輪支持体112の分担荷重を覆土輪支持体112を介して鎮圧輪101に下降荷重として作用させることができるため、同鎮圧輪101の自重を増大させることなく鎮圧荷重を確保することができて、機体の全重量の軽減化が図れると共に、同鎮圧輪101を昇降センサとしても良好に機能させることができる。
【0051】
なお、覆土輪支持体112の前端部の取付個所は、覆土輪113,113の分担荷重を鎮圧輪101に下降荷重として作用させることができる個所であればよく、回動支軸109に限らず、回転支軸110に取り付けることもできる。
【0052】
また、左側回動板体107は、図1、図3及び図4に示すように、連動機構150を介して前記昇降機構を昇降制御する昇降用油圧バルブ151に連動連結しており、同連動機構150は、左側回動板体107に後端部を連結した側面視略C字状の第1レバー体152と、同第1レバー体152の前端部に上端部を連結し、かつ、中途部を枢軸153により枢支した側面視L字状の第2レバー体154と、同第2レバー体154の下端部に後端部を連結し、かつ、前後方向に伸延させて形成した連結ロッド155と、同連結ロッド155の前端部に下端部を連結し、かつ、上端部を昇降用油圧バルブ151にバルブ作動軸156を介して連動連結した作動アーム157とから形成している。
【0053】
このようにして、鎮圧輪101が畝面Uの凹凸に沿って昇降動作すると、それに連動して左・右側回動板体107,108が枢支ピン106,106を中心に昇降動作し、同左側回動板体107に連動して第1レバー体152→第2レバー体154→連結ロッド155→作動アーム157→バブル作動軸156→昇降用油圧バルブ151→昇降機構が作動して、前・後車輪6,6,8,8が適宜昇降するようにしている。
【0054】
そして、苗移植部3の下方近傍に苗移植面である畝面Uを鎮圧すると共に昇降センサとしても機能する鎮圧輪101を配置して、同鎮圧輪101の検出結果に基づいて走行部1を昇降させることにより、苗移植部3による苗植付深さを一定に制御することができるため、精度良く苗の植付作業を行うことができる。
【0055】
しかも、植深調節手段140により鎮圧輪101のセンシング位置を調節して植付深さを調節すると、それに連動して覆土輪113,113も上下動して、覆土圧が設定圧に保持されるようにしているため、植深調節作業と覆土圧設定作業を逐一個別に行う必要性がなく、楽にかつ効率良く植深調節と覆土圧設定とをほぼ同時に行うことができる。
【0056】
また、本実施例では、図1に示すように、前車輪6と後車輪8との間に位置する機体フレーム4の個所に、鎮圧輪支持アーム159を介してもう一つの鎮圧輪158を取り付けている。
【0057】
このようにして、独立構造となした二個の鎮圧輪158,101を前後方向に配置することにより、前側の鎮圧輪158により軽く畝面Uを整地すると共に、後側の鎮圧輪101により畝面Uを整地しながら昇降センシングすることができる。
【0058】
しかも、前側の鎮圧輪158の鎮圧荷重を小さくすることが可能となり、畝面Uへの埋まり量を小さくすることができる。さらには、後側の鎮圧輪158を小径に形成することができるため、機体のレイアウトの自由度が大きくなる。
【0059】
図5及び図6は、他実施例としての縦搬送機構35と、同縦搬送機構35と横搬送機構36との間に介設した縦送り連動機構39を示しており、以下に、図5及び図6を参照しながら各機構35,39の構成について説明する。
【0060】
すなわち、縦搬送機構35は、支持枠体40に縦搬送機枠41を左右方向にスライド自在に取り付け、同縦搬送機枠41に左右方向に軸線を向けた縦送り軸42を横架し、同縦送り軸42に取り付けたスプロケット43と、同スプロケット43の後上方に配設したガイド体44との間に縦送り用チェン45を巻回している。
【0061】
ここで、支持枠体40は、下方へ凸条に湾曲させて形成した左右一対の支持片46,46の前部間と後部間に、それぞれ左右方向に伸延する前部ガイドレール47と後部ガイドレール48とを横架して形成しており、前部ガイドレール47は、前壁47aと、同前壁47aの上・下端縁部より後方へ突出させて形成した上・下部ガイドレール形成片47b,47cとから形成する一方、後部ガイドレール48は、後部ガイドレール形成片48aと、同後部ガイドレール形成片48aの上・下端縁部より前方へ突出させて形成した上・下部ガイドレール形成片48 b,48cと、同上部ガイドレール形成片47bの前端縁部より下方へ突出させて形成した前部ガイドレール形成片48dとから形成している。
【0062】
また、縦搬送機枠41の前部と後部には、それぞれ前部ガイドローラ49と後部第1・第2ガイドローラ50,51とを設けている。
【0063】
そして、前部ガイドローラ49は、前後方向に軸線を向けた前部ローラ支軸49aと、同前部ローラ支軸49aを中心に前部ガイドレール47の上・下部ガイドレール形成片47b,47cに沿って回転する前部ガイドローラ本体49bとから形成して、両上・下部ガイドレール形成片47b,47cにより前部ガイドローラ本体49bを上下方向からのみ支持している。
【0064】
このようにして、前部ガイドローラ49の前後幅を可及的に細幅に形成して、植付爪83を縦搬送機枠41側に近接させて配置することができるようにしている。従って、苗取出爪76から植付爪83への移植苗の受け継ぎを迅速かつ確実に行うことができる。
【0065】
また、後部第1ガイドローラ50は、前後方向に軸線を向けた後部第1ローラ支軸50aと、同後部第1ローラ支軸50aを中心に後部ガイドレール48の上・下部ガイドレール形成片48b,48cに沿って回転する後部第1ガイドローラ本体50bとから形成して、両上・下部ガイドレール形成片48b,48cにより後部第1ガイドローラ本体50bを上下方向から支持している。
【0066】
そして、後部第2ガイドローラ51は、上下方向に軸線を向けた後部第2ローラ支軸51aと、同後部第2ローラ支軸51aを中心に後部ガイドレール48の前・後部ガイドレール形成片48d,48aに沿って回転する後部第2ガイドローラ本体51bとから形成して、両前・後部ガイドレール形成片48d,48aにより後部第2ガイドローラ本体51bを前後方向から支持している。
【0067】
このようにして、後部ガイドレール48は、上・下・前・後部ガイドレール形成片48b,48c,48d,48aを具備して、後部第1・第2ガイドローラ50,51を上下方向及び前後方向から支持することができると共に、苗トレイTに付着した土等の異物が落下しても、後部ガイドレール48内に侵入するのを防止することができる。
【0068】
また、前記ガイド体44は、ガイド本片44aを略半円板状に形成すると共に、同ガイド本片44aの終端縁部44bを縦送り用チェン45の摺動ガイド面となしており、同ガイド本片44aの中途部に前後方向に伸延する位置調整用長孔52,52を形成して、同位置調整用長孔52,52を介して縦搬送機枠41の縦枠片41aに、位置調整用ボルト53,53により前後位置調整自在に取り付けている。
【0069】
このようにして、コンパクトな構造にてガイド体44を前後位置調整することができ、かかる前後位置調整により縦送り用チェン45のテンション調整を楽に行うことができると共に、ガイド本片44aの終端縁部44bの形状を設定することにより、縦送り用チェン45の回動軌跡も自由に設定することができる。
【0070】
また、縦搬送機枠41の前部には、前部ガイドレール47を上方からカバーするカバー体54を配設しており、同カバー体54は、前部ガイドレール47に沿って左右方向に伸延させて形成して、同前部ガイドレール47を上方から被覆している。
【0071】
このようにして、前部ガイドレール47をカバー体54により上方から被覆しているため、苗取出時や苗トレイTの巻き込みによってこぼれ落ちる土等の異物が前部ガイドレール47に侵入するのを防止することができると共に、カバー体54により縦搬送機枠41を補強することができる。
【0072】
縦送り連動機構39は、図5及び図6に示すように、横搬送機構36に左右方向に軸線を向けて設けたカム支軸55(図1参照)に、L字状に形成した下側揺動作用体56の基端部56aを連動連結して、同下側揺動作用体56の先端部56bを前後方向に揺動自在となし、同下側揺動作用体56の先端部56bの上方に位置する支持枠体40の支持片46に、L字状に形成した上側揺動作用体57の中途部を前後方向に軸線を向けた揺動支軸58を介して揺動自在に枢支して、同上側揺動作用体57の下方伸延片57aの下部に上記下側揺動作用体56の先端部56bが作用して、同上側揺動作用体57を揺動支軸58を中心に前後方向に揺動させるようにしている。
【0073】
そして、上側揺動作用体57は、揺動支軸58に回動自在に取り付けたボス部59に、上記下方伸延片57aの上端部を一体的に取り付けると共に、同ボス部59に回動位置調節片57bを前方へ突出させて一体的に取り付け、同回動位置調節片57bに上下方向に伸延する調節用長孔60を形成する一方、揺動支軸58に前方へ伸延する前方伸延片57cの基端部を上下回動自在に枢支し、同前方伸延片57cの中途部に突設した回動位置調節ピン61を上記調節用長孔60中に挿通させると共に、同回動位置調節ピン61の先端部に抓み付きナット62を螺着している。
【0074】
このようにして、抓み付きナット62を緩めると共に、前方伸延片57cを上下回動位置調節して、抓み付きナット62を締め付けることにより、下方伸延片57aとの相対角度を調節することができるようにしている。
【0075】
従って、必要ストロークの異なる苗トレイTに対して、ストロークを最適に調節することにより、駆動トルクを抑制することができる。そして、苗トレイTの違いによる縦送りと横送りのタイミングを最適な状態に設定することができる。また、部品や組立誤差によるストローク量のずれを調節することができる。
【0076】
また、縦搬送機構35に設けた縦送り軸42にはラチェット63を取り付け、同ラチェット63の近傍にラチェット係止体64を配置すると共に、同ラチェット係止体64は中途部を左右方向に軸線を向けた係止体支軸65により枢支して、上端部にラチェット63に係止する係止片64aを形成する一方、下端部にラチェット63に当接する当接片64bを形成して、係止片64aを係止用引張スプリング66によりラチェット63に係止する方向に弾性付勢している。
【0077】
また、縦送り軸42には、係止解除体67の中途部を取り付け、同係止解除体67の一側端部を係止解除作用片67aとなして、同係止解除作用片67aを前記ラチェット係止体64の内周端64cに摺動自在に当接させて、図6の側面図において、同係止解除作用片67aの上方(時計廻り)への回動動作に連動して、ラチェット係止体64を係止体支軸65を中心に反時計廻りに回動させて、ラチェット63に係止された係止片64aを係止解除動作させることができるようにしている。
【0078】
一方、係止解除体67の他側端部を連結片67bとなして、同連結片67bの後端部に連結ピン68を介して前記前方伸延片57cの先端部を連結すると共に、連結片67bと支持枠体40との間に引張スプリング69を介設して、同引張スプリング69により係止解除体67を、図6の側面図において、時計廻りに回動付勢している。70はスプリング連結片である。
【0079】
このようにして、図6の側面図において、カム支軸55が回動して下側揺動作用体56を時計廻りに回動させると、同下側揺動作用体56に連動して上側揺動作用体57が揺動支軸58を中心に反時計廻りに回動し、同上側揺動作用体57の前後伸延片57cの先端部に連結している係止解除体67を縦送り軸42を中心に時計廻りに回動させるようにしている。
【0080】
その結果、前記したようにラチェット係止体64が係止体支軸65を中心に反時計廻りに回動されて、ラチェット63に係止された係止片64aが係止解除動作され、同ラチェット63が回動される。
【0081】
そして、ラチェット63が所定のピッチだけ回動すると、ラチェット係止体64に設けた当接片64bがラチェット63に当接して、同ラチェット63の回動を停止させる。
【0082】
従って、ラチェット63と縦送り支軸42に同軸的に取り付けているスプロケット43が回動して、縦送り用チェン45を介して苗トレイTが苗ポットPの一段分だけ確実に縦送りされる。
【0083】
また、本実施例では、縦送り軸42にボス部30を介して縦送り操作レバー31を取り付け、同縦送り操作レバー31をボス部30を介して係止解除体67に連動連結している。
【0084】
このようにして、縦送り操作用レバー31を、図6に示すように、時計廻りに回動操作することにより、係止解除体67を時計廻りに回動させて、ラチェット63に係止されたラチェット係止体64の係止片64aを係止解除させることができる、すなわち、苗トレイTを手動により縦送りさせることができるようにしている。
【0085】
ここで、係止解除体67の連結片67bの下方位置にストッパー片32を配置して、同ストッパー片32により縦送り操作レバー31の時計廻りの回動操作を規制している。
【0086】
このようにして、縦送り操作レバー31により苗トレイTが苗ポットPの一段分だけ縦送りされるようにして、二段分以上の縦送りができないようにしている。
【0087】
また、縦送り操作レバー31の反時計廻りの回動方向にも回動規制片33を配置して、同縦送り操作レバー31の回動を規制するようにしている。
【0088】
このようにして、苗トレイTの切替作業を行う際に、係止解除体67のロックを解除するため、蓄積された駆動力で必要以上に係止解除体67が回動しないようにすると共に、同係止解除体67の初期位相がずれないようにすることができる。
【0089】
図7は、他実施例としての移植機Aを示しており、同移植機Aでは、苗移植部3の上方位置において、左右側部にそれぞれ予備苗載台13,13,13,13を上下二段に立体的に配置すると共に、上段の予備苗載台13,13を下段の予備苗載台13,13よりも前方、すなわち、オペレータ位置よりから離隔する方向にずらして配置している。
【0090】
このようにして、予備苗載台13を立体的に配置することにより、苗トレイTの積載枚数を増大させることができるとと共に、上下段の予備苗載台13,13を前後方向に位置ずれ(オフセット)させることにより、下側の予備苗載台13に載置した苗トレイTも容易に取り出すことができる。
【0091】
また、上下段の予備苗載台13,13は、苗トレイTの取り出し易さ等に応じて内外側方向(左右方向)にも位置ずれさせて配置することができる。
【0092】
【発明の効果】
(1)請求項1記載の本発明では、走行部に、苗移植 部の下方近傍に配置して苗移植 面を鎮圧すると共に昇降センサとしても機能する鎮圧輪と、移植 苗に覆土する覆土輪とを設けて、上記鎮圧輪の検出結果に基づいて走行部を昇降させることにより、苗移植 部による苗植付深さを一定に制御可能となすと共に、センシング時の鎮圧輪と機体との相対位置を調節して植付深さを調節する植深調節手段を設ける一方、覆土輪に所要の覆土圧を設定・付与する覆土圧設定・付与手段を設け、同覆土圧設定・付与手段を前記植深調節手段に連動連結して、同植深調節手段の植深調節に連動して覆土輪も上下動して、覆土圧が設定圧に保持されるようにしている。
【0093】
このようにして、苗移植部の下方近傍に苗移植面を鎮圧すると共に昇降センサとしても機能する鎮圧輪を配置して、同鎮圧輪の検出結果に基づいて走行部を昇降させることにより、苗移植部による苗植付深さを一定に制御可能としているため、精度良く苗の植付作業を行うことができる。
【0094】
しかも、植深調節手段により鎮圧輪のセンシング位置を調節して植付深さを調節すると、それに連動して覆土輪も上下動して、覆土圧が設定圧に保持されるようにしているため、植深調節作業と覆土圧設定作業を逐一個別に行う必要性がなく、楽にかつ効率良く植深調節と覆土圧設定とをほぼ同時に行うことができる。
【0095】
(2)請求項2記載の本発明では、鎮圧輪に覆土輪支持体を介して覆土輪を連結すると共に、同覆土輪及び覆土輪支持体の分担荷重を鎮圧輪に下降荷重として作用させるようにしている。
【0096】
このようにして、覆土輪及び覆土輪支持体の分担荷重を鎮圧輪に下降荷重として作用させることができるため、同鎮圧輪の自重を増大させることなく鎮圧荷重を確保することができて、機体の全重量の軽減化が図れると共に、同鎮圧輪を昇降センサとしても良好に機能させることができる。
【図面の簡単な説明】
【図1】本発明に係る移植機の側面図。
【図2】同移植機の平面図。
【図3】植深調節手段の側面図。
【図4】同植深調節手段の平面図。
【図5】他実施例としての縦送り機構の側面図。
【図6】他実施例としての縦送り連動機構の側面説明図。
【図7】他実施例としての移植機の斜視図。
【符号の説明】
A 移植機
1 走行部
2 苗供給部
3 苗移植部
4 機体フレーム
5 前車輪支持アーム
6 前車輪
7 後車輪駆動ケース
8 後車輪
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a transplanter.
[0002]
[Prior art]
Conventionally, as one form of the transplanter, a traveling unit, a seedling supply unit disposed at a rear portion of the traveling unit, and a seedling transplanting unit disposed at a front position of the seedling supply unit are equipped with the seedling transplanting Some parts are provided with a planting mechanism that is supported by a cover ring and has a floating function (see, for example, Patent Document 1).
[0003]
In such a transplanting machine, the covered earth ring that rolls along the ridge surface moves up and down along the concave and convex shape of the ridge surface, and the planting mechanism having a floating function is also moved up and down in conjunction therewith, so that the seedling to be transplanted The planting depth is kept constant.
[0004]
In addition, the planting mechanism is supported by a cover ring via a connecting body, and the cover soil ring is arranged at a position rearward of the planting mechanism, and covers the seedlings planted on the surface by the planting mechanism. Like to do.
[0005]
[Patent Document 1]
JP-A-5-276809
[0006]
[Problems to be solved by the invention]
However, in the transplanter described above, since the distance between the connection position of the connected body to the planting mechanism and the cover ring arranged at the rear position of the planting mechanism is large, However, there is no one-to-one correspondence with the amount of lifting of the planting mechanism that moves up and down in conjunction with the covered earth ring, and for this reason, the difference in the amount of lifting is mechanically adjusted, but the structure is complicated. However, there is a problem that accurate adjustment cannot be performed.
[0007]
[Means for Solving the Problems]
Therefore, in the present invention, in a transplanter equipped with a traveling unit having a lifting function, a seedling supply unit disposed at the rear of the traveling unit, and a seedling transplanting unit disposed at a front position of the seedling supply unit, In the traveling part, a pressure reducing wheel that is arranged near the lower part of the seedling transplanting part and suppresses the seedling transplanting surface and also functions as a lifting sensor and a covering ring that covers the transplanted seedling is provided, and the detection result of the pressure reducing wheel is obtained. By raising and lowering the traveling part based on the seedling transplanting depth by the seedling transplanting part can be controlled to be constant, Relative position of pressure wheel and airframe during sensing Is provided with a planting depth adjusting means for adjusting the planting depth, and a soil covering pressure setting / applying device for setting / applying a required soil covering pressure to the soil covering ring is provided. A transplanter that is linked to the depth adjusting means, and the cover ring is moved up and down in conjunction with the depth adjustment of the planting depth adjusting means so that the covering pressure is maintained at the set pressure. It is to provide.
[0008]
The present invention is also characterized in that the cover ring is connected to the pressure reducing wheel via the cover ring support, and the shared load of the cover ring and the cover ring support is made to act on the pressure reduction wheel as a downward load. Have
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
[0010]
That is, the transplanting machine according to the present invention includes, as a basic structure, a traveling unit having a lifting function, a seedling supply unit disposed at the rear of the traveling unit, and a seedling transplanting disposed at a front position of the seedling supply unit. Equipped with a department.
[0011]
And, as a characteristic structure, the traveling part is arranged near the lower part of the seedling transplanting part to suppress the seedling transplanting surface and also serves as a lifting sensor and a covering ring that covers the transplanted seedling, By raising and lowering the traveling part based on the detection result of the pressure wheel, it is possible to control the seedling planting depth by the seedling transplanting part to be constant, and to adjust the sensing position of the pressure wheel to adjust the planting depth. While providing a planting depth adjusting means for adjusting, a soil covering pressure setting / applying means for setting / applying a required soil covering pressure to the soil covering ring is provided, and the soil covering pressure setting / applying means is linked to the planting depth adjusting means, The cover ring is also moved up and down in conjunction with the planting depth adjustment of the planting depth adjusting means so that the soil covering pressure is maintained at the set pressure.
[0012]
In addition, the cover ring is connected to the pressure reducing wheel via the cover ring support, and the shared load of the cover ring and the cover ring support is made to act on the pressure reduction wheel as a downward load.
[0013]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0014]
A shown in FIG. 1 is a transplanter according to the present invention. The transplanter A includes a traveling unit 1, a seedling supply unit 2 disposed at the rear of the traveling unit 1, and a front of the seedling supply unit 2. The seedling transplanting section 3 disposed in the position is provided, and the pot seedling (not shown) supplied from the seedling supply section 2 is supplied to the field by the seedling transplanting section 3 while the traveling section 1 is self-propelled in the field G. It is intended to be transplanted to the ridge U of G.
[0015]
The traveling unit 1 has front wheels 6 and 6 attached to the front portion of the body frame 4 via a pair of left and right front wheel support arms 5 and 5, and a rear wheel drive case 7 serving as a pair of left and right rear wheel support arms on the rear portion. , 7 are attached to the rear wheels 8, 8. These front and rear wheels 6, 6, 8, 8 are linked to a lifting mechanism (not shown) so that the lifting mechanism can be used as a lifting sensor. The planting depth of the pot seedling by the seedling transplanting unit 3 by raising and lowering the front and rear wheels 6,6,8,8 based on the lifting and lowering movement amount along the saddle surface U of the functioning pressure wheel 101 described later. Can be kept constant.
[0016]
The engine 10 is mounted on the front part of the fuselage frame 4, the mission case 11 is disposed at the rear position of the engine 10, and the mission case 11 is linked to the engine 10 to the transmission case 11. The rear wheel drive cases 7, 7, the seedling supply unit 2, and the seedling transplanting unit 3 are linked to each other. 12 is a bonnet and 13 is a stand for seedlings.
[0017]
Further, as shown in FIGS. 1 and 2, a pair of left and right handle support frames 15 and 15 are extended at the rear end portion of the body frame 4 via the support body 14 so as to support both handles. A handle 16 formed in a U shape in plan view is attached to the rear ends of the frames 15, 15. A lower lever guide support 17 is installed between the lower portions of the handles 16, and a depth of the lower lever guide support 17 is planted. The pressure reduction lever guide body 18, the inter-stock adjustment lever guide body 19 and the main speed change lever guide body 20 are arranged adjacent to each other in the left-right direction, and the planting depth and pressure reduction adjustment lever is provided via the lever guide bodies 18, 19, and 20. 117, an inter-stock adjustment lever 22, and a main transmission lever 23 are provided.
[0018]
Then, an upper lever guide support 24 is installed between the upper portions of the handle 16, and the planting clutch lever guide body 25 is disposed on the left side of the upper lever guide support 24, while the lifting lever guide body 26 is disposed on the right side. The planting clutch lever 27 and the elevating lever 28 are disposed through the lever guide bodies 25 and 26, respectively.
[0019]
As shown in FIGS. 1 and 2, the seedling supply unit 2 is disposed between the middle part of the pair of left and right handle support frames 15 and 15, and includes a vertical transport mechanism 35 that vertically transports the seedling tray T. A horizontal transfer mechanism 36 for horizontally transferring the vertical transfer mechanism 35 is provided.
[0020]
As shown in FIG. 1, the vertical transport mechanism 35 vertically transports the seedling tray T in which the seedling pots P are formed in the vertical and horizontal directions in the forward and downward directions at intervals of the seedling pots P, which will be described later. The seedling transplanting section 3 transplants a pot seedling (not shown) in the seedling pot P onto the heel surface U, and the empty seedling tray T is conveyed back and upward.
[0021]
As shown in FIGS. 1 and 2, the horizontal transport mechanism 36 is disposed below the vertical transport mechanism 35, and has the same structure as a horizontal feed shaft 37 linked to the vertical transport mechanism 35 with the axis line directed in the left-right direction. The lateral feed shaft 37 is interlocked and connected to the middle portion of the lateral feed shaft 37, and has a laterally moving body 38 for laterally moving the lateral feed shaft 37 in the axial direction. A feed groove 37a is formed.
[0022]
As shown in FIG. 1, a vertical feed interlocking mechanism 39 is interposed between the horizontal transport mechanism 36 and the vertical transport mechanism 35. When moving horizontally to the end, the vertical conveying mechanism 35 is rotated by a certain amount only in one direction, so that the seedling tray T is vertically fed by one stage of the seedling pot P.
[0023]
In this way, after the horizontal movement of the seedling pot P formed on the seedling tray T by the horizontal row, the seedling pot P is fed vertically by one stage, and again moved laterally by the horizontal row, the seedling pot The operation of feeding vertically by one stage of P is repeated.
[0024]
As shown in FIG. 1, the seedling transplanting unit 3 receives a seedling extracting mechanism 71 that extracts a potted seedling (not shown) from the seedling tray T of the seedling supplying unit 2 and a pot seedling that is extracted by the seedling extracting mechanism 71. And a planting mechanism 72 for planting pot seedlings on the surface U.
[0025]
As shown in FIG. 1, the seedling removal mechanism 71 includes a seedling removal rotor case 74 that is linked to a drive case 29 described later via a seedling removal transmission chain 73, and an opening / closing that is linked to the seedling removal rotor case 74. A cam 75 and a pair of left and right seedling extraction claws 76 and 76 that are opened and closed by the opening and closing cam 75 are provided.
[0026]
As shown in FIGS. 1 and 2, the planting mechanism 72 interlocks and connects the front end of the planting transmission case 80 via the planting input shaft 77 to the mission case 11 provided in the traveling unit 1. The planted rotor case 81 is linked to the rear end of the attached transmission case 80, the base end of the crank arm 160 is linked to the planted rotor case 81, and is pivotally connected to the tip of the crank arm 160. The bent portion 163 of the L-shaped support body 162 is pivotally connected and connected via a pin 161, and a planting claw 83 as an opening device is attached to the rear end portion of the L-shaped support body 162, and the bent portion 163 is also connected. An opening / closing cam mechanism 82 is interposed between the guide claw 83 and a guide roller 165 which is rotatably attached to an upper end portion of the L-shaped support body 162 via a guide roller pivot pin 164. .
[0027]
In addition, a slide guide body 166 extending in the vertical direction is attached to the front end portion of the right handle support frame 15, and a slide guide groove 167 extending in the vertical direction is formed in the slide guide body 166. The guide roller 165 is slidably fitted therein.
[0028]
Further, as shown in FIG. 1, the drive case 29 is disposed at a rear upper position of the mission case 11, and between the input / output shaft 85 of the mission case 11 and the input shaft 86 of the drive case 29. A transmission transmission belt mechanism 87 and a transmission chain mechanism 88 are interposed.
[0029]
Further, as shown in FIG. 1, in the vicinity of the lower part of the planting mechanism 72, a pressure-reducing wheel 101 is attached to the rear lower part of the mission case 11 via a pair of left and right pressure-reducing wheel support arms 100, 100 so as to be movable up and down. The pressure reducing wheel 101 suppresses the seedling transplant surface and also functions as a lift sensor.
[0030]
That is, as shown in FIGS. 3 and 4, a pair of left and right support plate bodies 103 and 103 are attached to the rear lower portion of the mission case 11 via fixing bolts 102 and 102 with the axis line in the left and right direction. Between the lower part, the support shaft 104 with the axis line directed in the left-right direction is horizontally laid in a penetrating state, and U-shaped support brackets 105, 105 in a plan view are attached to the left and right ends of the support shaft 104. The left and right pivot plates 107 and 108 are pivotally mounted via pivot pins 106 and 106 with the axis line directed to the left and right, respectively, and the axis line is directed between the left and right pivot plates 107 and 108 in the left and right direction. The pivot shaft 109 is horizontally mounted in a penetrating state, and the base ends of the pair of left and right pressure-reducing wheel support arms 100, 100 are pivotally supported on the rotation pivot 109, and between the distal ends of the pressure-reducing wheel support arms 100, 100. A pressure-reducing wheel 101 is rotatably attached via a rotation support shaft 110.
[0031]
1, 3, and 4, a soil cover pressure setting / applying means 111 is provided between the pair of left and right handle support frames 15, 15, and the cover soil pressure setting / applying means 111 and the pressure reducing wheel 10 are provided. A cover ring support 112 extending in the front-rear direction is installed between the cover ring 1 and a pair of left and right cover rings 113 and 113 covering the transplanted seedlings are attached to the cover ring support 112.
[0032]
That is, the cover ring support 112 is viewed in plan view from a pair of left and right front and rear extension support pieces 114 and 114 extending in the front and rear direction, and a right and left extension piece 115 extending in the left and right direction and connecting the rear ends of both front and rear extension support pieces 114 and 114. It is formed in a U-shape, and the front end portions of the front and rear extension support pieces 114 and 114 are pivotally connected to the left and right end portions of the rotation support shaft 109, while the center portion of the left and right extension pieces 115 is set to the covering pressure setting. The cover rings 113 and 113 are rotatably attached to the rear portions of the front and rear extension support pieces 114 and 114 via the cover ring support shafts 116 and 116 with their axes oriented in the left-right direction.
[0033]
As shown in FIG. 1, FIG. 3 and FIG. 4, the soil covering pressure setting / applying means 111 includes a planting depth and pressure reducing adjustment lever 117, which will be described later, attached to a pair of left and right handle support frames 15 and 15, and the soil covering ring support body. It is interposed between the attachment piece 118 attached to the central part of the left and right extending pieces 115 of 112.
[0034]
In other words, the soil cover pressure setting / applying means 111 is capable of rotating a support shaft 121 having an axis line in the left-right direction via a pair of left and right support bodies 120, 120 around the pair of left and right handle support frames 15, 15. The pivoting piece 122 is attached to the left side of the supporting shaft 121, and the planting depth / crushing adjustment lever 117 is connected to the pivoting piece 122 via a pivoting pin 123 whose axis is directed vertically. The base end portion is attached, and the planting depth / crushing adjustment lever 117 is rotatable up and down around the support shaft 121 and left and right around the pivot pin 123.
[0035]
Then, a base end portion of a pair of left and right support arms 124, 124 is attached to the right side portion of the support shaft 121, a connecting piece 125 is horizontally placed between the tip ends of both support arms 124, 124, and between the pair of left and right support arms 124, 124. A spring receiver 127 formed in a ring shape is arranged, and the spring receiver 127 is continuously connected to the connecting piece 125, while a cylindrical body 126 extending vertically is slid up and down in the spring receiver 127. While being freely inserted, the lowering restriction piece 139 protruding from the upper end of the cylindrical body 126 is brought into contact with and locked to the upper end surface of the spring receiving body 127 to restrict downward sliding of the cylindrical body 126. On the other hand, a soil pressure applying spring 129 is wound around the outer peripheral surface of the cylindrical body 126 between the lower end surface of the spring receiver 127 and the soil pressure adjusting body 128 attached to the lower portion of the cylindrical body 126. .
[0036]
In addition, the support rod 130 is inserted into the cylindrical body 126, and the left and right extension pieces 115 are attached to the lower end portion of the support rod 130 via the mounting pieces 118, and between the support rod 130 and the lower end of the cylindrical body 126. In addition, a soil pressure adjusting body 128 is interposed. Reference numeral 149 denotes a mounting pin.
[0037]
That is, the soil covering pressure adjusting body 128 includes upper and lower pieces 131 and 132 each having a support rod through hole (not shown) formed in the center, a connecting piece 133 that connects the ends of the upper and lower pieces 131 and 132, A support rod through hole (not shown) is formed in the part, and a fixed piece 134 disposed between the upper and lower pieces 131 and 132, and one end 135 of the fixed piece 134 are locked to the connecting piece 133, and the fixed piece 134 And a lower spring 132, and a pressing spring 136 wound around the outer peripheral surface of the support rod 130.
[0038]
In this way, the other end 137 of the fixed piece 134 whose one end 135 is locked to the connecting piece 133 is pressed downward against the elastic pressing force of the pressing spring 136, so that the fixed piece 134 is in a substantially horizontal state. By doing so, the cylindrical body 126 can be made to slide up and down along the support rod 130 integrally with the covering pressure adjusting body 128.
[0039]
Then, when the pressing force to the other end 137 of the fixed piece 134 is released at a desired position, the pressing spring 136 pushes up the fixed piece 134 with the one end 135 locked to the connecting piece 133, and the fixed piece 134 is inclined. The fixed piece 134 can be fixed to the outer peripheral surface of the support rod 130.
[0040]
Therefore, it is possible to adjust the vertical sliding position of the cylindrical body 126 via the fixed piece 134, and to adjust the contraction of the soil pressure applying spring 129 interposed between the cylindrical body 126 and the spring receiver 127, thereby The covering pressure applied by the covering pressure application spring 129 to the covering rings 113, 113 can be adjusted arbitrarily (steplessly) and set to a required set pressure.
[0041]
In the configuration as described above, the gist of the present invention is that the seedling transplanting depth by the seedling transplanting unit 3 can be controlled uniformly by raising and lowering the traveling unit 1 based on the detection result of the pressure-reducing wheel 101. In addition, the planting depth adjusting means 140 for adjusting the planting depth by adjusting the sensing position of the pressure reducing wheel 101 is provided, while the soil covering pressure setting / applying means 111 for setting / applying the required soil covering pressure to the soil covering rings 113, 113 is provided. The cover soil pressure setting / applying means 111 is interlocked to the planting depth adjusting means 140 and the soil cover rings 113 and 113 are moved up and down in conjunction with the planting depth adjustment of the planting depth adjusting means 140 to set the soil cover pressure. This is because the pressure is maintained.
[0042]
That is, as shown in FIGS. 3 and 4, the planting depth adjusting means 140 integrally connects the base end portion of the operating arm 141 extending forward and upward to the base end portion of the right pressure wheel support arm 100. On the other hand, the base end portion of the action arm 142 extending rearward and downward is connected to the left side portion of the support shaft 121 provided in the soil covering pressure setting / applying means 111, and the tip end portion of the action arm 142 is provided. And a planting depth adjusting wire 143 as a planting depth adjusting interlock mechanism is interposed between the operating arm 141 and the tip of the operating arm 141. 144 is an outer wire, 145 is an inner wire, and 146 and 147 are outer receivers.
[0043]
Then, a tension spring 148 is interposed between the middle part of the right rotation plate 108 and the middle part of the outer surface of the right pressure wheel support arm 100 to urge the pressure wheel 101 to rotate upward. Yes.
[0044]
In this way, when the planting depth / crushing pressure adjusting lever 117 is rotated (adjusted) counterclockwise around the support shaft 121 in the side view shown in FIG. The action arm 142 attached to the left end rotates counterclockwise around the support shaft 121 and pulls the inner wire 145 rearward, and in conjunction with this, the operating arm 141 receives the elastic biasing force of the tension spring 148. The pressure wheel 101 can be rotated clockwise around the rotation support shaft 109 and the pressure reducing wheel 101 can be adjusted downward (down) about the rotation support shaft 109.
[0045]
At this time, the support arms 124 and 124 having the base end attached to the support shaft body 121 are centered on the support shaft body 121. Counterclockwise And the cover rings 113, 113 can also be lowered via the continuous piece 125, the cover pressure setting / applying means 111, and the cover ring support 112.
[0046]
Conversely, when the planting depth / crushing adjustment lever 117 is rotated (adjusted) downward about the support shaft 121, the action arm 142 attached to the left end portion of the support shaft 121 becomes the support shaft. The actuating arm 141 is rotated counterclockwise around the rotation support shaft 109 by the elastic biasing force of the tension spring 148 in order to rotate clockwise about 121 and relax the inner wire 145. 101 can be pivoted (increased) upward about the pivot shaft 109.
[0047]
At this time, the support arms 124 and 124 having the base end attached to the support shaft body 121 are centered on the support shaft body 121. Around the clock The cover rings 113, 113 can also be raised through the continuous piece 125, the cover pressure setting / applying means 111, and the cover ring support 112.
[0048]
Here, the soil covering rings 113 and 113 move up and down in conjunction with the planting depth adjustment by the planting depth and pressure reducing adjustment lever 117, but the soil covering pressure is maintained at the set pressure.
[0049]
Further, the front end portion of the earth covering ring support 112 is attached to the rotation support shaft 109 that supports the pressure reducing wheel 101, and the load sharing of the earth covering rings 113, 113 and the earth covering ring supporting body 112 is set to the pressure reducing wheel 101 as a descending load. I try to make it work.
[0050]
Accordingly, since the load shared by the earthen ring 113, 113 and the earthen ring support 112 can be applied as a descending load to the pressure reduction wheel 101 via the earthen ring support 112, the pressure reduction load without increasing the weight of the pressure reduction wheel 101. This makes it possible to reduce the total weight of the fuselage and to make the pressure-reducing wheel 101 function well as a lift sensor.
[0051]
Note that the attachment position of the front end portion of the covering ring support 112 is not limited to the rotating support shaft 109, and may be any place where the load shared by the covering rings 113, 113 can be applied to the pressure reducing wheel 101 as a descending load. It can also be attached to the spindle 110.
[0052]
Further, as shown in FIGS. 1, 3, and 4, the left-side rotating plate body 107 is linked to a lifting hydraulic valve 151 that controls lifting of the lifting mechanism via a linkage mechanism 150. The mechanism 150 includes a first lever body 152 that is substantially C-shaped in a side view in which a rear end portion is coupled to the left-side rotating plate body 107, an upper end portion that is coupled to a front end portion of the first lever body 152, and a midway L-shaped second lever body 154 whose side is pivotally supported by a pivot 153, and a connecting rod formed by connecting the rear end to the lower end of the second lever body 154 and extending it in the front-rear direction 155 and an operating arm 157 having a lower end connected to the front end of the connecting rod 155 and an upper end connected to a lifting hydraulic valve 151 via a valve operating shaft 156.
[0053]
In this way, when the pressure-reducing wheel 101 moves up and down along the uneven surface U, the left and right rotating plate bodies 107 and 108 move up and down around the pivot pins 106 and 106 to move the left and right rotating plates. In conjunction with the body 107, the first lever body 152 → the second lever body 154 → the connecting rod 155 → the operating arm 157 → the bubble operating shaft 156 → the lifting hydraulic valve 151 → the lifting mechanism is operated to move the front and rear wheels 6, 6,8,8 are moved up and down appropriately.
[0054]
Then, a pressure-reducing wheel 101 that suppresses the heel surface U, which is a seedling transplanting surface, is disposed in the vicinity of the lower part of the seedling transplanting part 3 and also functions as a lift sensor, and the traveling unit 1 is arranged based on the detection result of the pressure reducing wheel 101. By raising and lowering, the seedling planting depth by the seedling transplanting unit 3 can be controlled to be constant, so that seedling planting work can be performed with high accuracy.
[0055]
In addition, when the planting depth is adjusted by adjusting the sensing position of the pressure reducing wheel 101 by the planting depth adjusting means 140, the soil covering rings 113 and 113 are also moved up and down in conjunction with this, so that the soil covering pressure is maintained at the set pressure. Therefore, there is no need to perform the planting depth adjustment work and the soil cover pressure setting work individually one by one, and the planting depth adjustment and soil cover pressure setting can be performed almost simultaneously and easily.
[0056]
Further, in this embodiment, as shown in FIG. 1, another pressure reducing wheel 158 is attached to a portion of the body frame 4 located between the front wheel 6 and the rear wheel 8 via a pressure reducing wheel support arm 159. ing.
[0057]
In this way, by arranging the two pressure-reducing wheels 158 and 101 having independent structures in the front-rear direction, the surface U is lightly grounded by the front pressure-reducing wheel 158, and the surface U Ascending and descending sensing is possible while leveling the ground.
[0058]
In addition, it is possible to reduce the pressure-suppressing load of the front pressure-reducing wheel 158, and the amount of burying in the heel surface U can be reduced. Furthermore, since the rear pressure wheel 158 can be formed with a small diameter, the flexibility of the layout of the aircraft is increased.
[0059]
5 and 6 show a vertical transport mechanism 35 as another embodiment, and a vertical feed interlocking mechanism 39 interposed between the vertical transport mechanism 35 and the horizontal transport mechanism 36. And the structure of each mechanism 35 and 39 is demonstrated, referring FIG.
[0060]
That is, the vertical transport mechanism 35 is mounted on the support frame 40 so that the vertical transport machine frame 41 is slidable in the left-right direction, and the vertical transport shaft 42 is horizontally mounted on the vertical transport machine frame 41 with the axis line in the left-right direction. A vertical feed chain 45 is wound between a sprocket 43 attached to the vertical feed shaft 42 and a guide body 44 disposed on the rear upper side of the sprocket 43.
[0061]
Here, the support frame body 40 includes a front guide rail 47 and a rear guide that extend in the left-right direction between the front part and the rear part of a pair of left and right support pieces 46, 46 formed by curving downwardly into a convex line. The front guide rail 47 is formed so as to protrude from the front wall 47a and the upper and lower edge edges of the front wall 47a to the rear. 47b, 47c, while the rear guide rail 48 is formed with a rear guide rail forming piece 48a and upper and lower guide rails formed by projecting forward from the upper and lower edge edges of the rear guide rail forming piece 48a. It is formed of pieces 48b, 48c and a front guide rail forming piece 48d formed by projecting downward from the front end edge of the upper guide rail forming piece 47b.
[0062]
A front guide roller 49 and rear first and second guide rollers 50 and 51 are provided at the front and rear portions of the vertical transfer machine frame 41, respectively.
[0063]
The front guide roller 49 includes a front roller support shaft 49a whose axis is directed in the front-rear direction, and upper and lower guide rail forming pieces 47b, 47c around the front roller support shaft 49a. The front guide roller main body 49b is supported by the upper and lower guide rail forming pieces 47b and 47c only in the vertical direction.
[0064]
In this way, the front-rear width of the front guide roller 49 is formed as narrow as possible so that the planting claws 83 can be arranged close to the vertical transfer machine frame 41 side. Therefore, it is possible to quickly and reliably transfer the transplanted seedling from the seedling extraction claw 76 to the planting claw 83.
[0065]
The rear first guide roller 50 includes a rear first roller support shaft 50a whose axis is directed in the front-rear direction, and upper and lower guide rail forming pieces 48b around the rear first rail support shaft 50a. , 48c and a rear first guide roller main body 50b that rotates along the upper and lower guide rail forming pieces 48b, 48c.
[0066]
The rear second guide roller 51 includes a rear second roller support shaft 51a whose axis is directed in the vertical direction and a front / rear guide rail forming piece 48d of the rear guide rail 48 around the rear second roller support shaft 51a. , 48a and a rear second guide roller main body 51b that rotates along the front and rear guide rail forming pieces 48d, 48a.
[0067]
Thus, the rear guide rail 48 includes upper, lower, front, and rear guide rail forming pieces 48b, 48c, 48d, and 48a, and the rear first and second guide rollers 50 and 51 are moved in the vertical direction and in the front-rear direction. In addition to being able to support from the direction, even if foreign matter such as soil attached to the seedling tray T falls, it can be prevented from entering the rear guide rail 48.
[0068]
Further, the guide body 44 has a guide main piece 44a formed in a substantially semi-disc shape, and a terminal edge 44b of the guide main piece 44a serves as a sliding guide surface of the longitudinal feed chain 45. Formed in the middle part of the guide main piece 44a is a longitudinal hole 52, 52 for position adjustment extending in the front-rear direction, and through the same longitudinal adjustment hole 52, 52 to the vertical frame piece 41a of the vertical carrier frame 41, Position adjustment bolts 53 and 53 are attached so that the front and rear positions can be adjusted.
[0069]
In this way, the guide body 44 can be adjusted in the front-rear position with a compact structure, and the tension of the longitudinal feed chain 45 can be easily adjusted by such front-rear position adjustment, and the end edge of the guide main piece 44a can be adjusted. By setting the shape of the portion 44b, the rotational trajectory of the vertical feed chain 45 can be freely set.
[0070]
In addition, a cover body 54 that covers the front guide rail 47 from above is disposed at the front portion of the vertical transfer machine frame 41. The cover body 54 extends in the left-right direction along the front guide rail 47. The front guide rail 47 is covered and formed from above.
[0071]
In this way, since the front guide rail 47 is covered with the cover body 54 from above, foreign matter such as soil spilling when the seedlings are taken out or the seedling tray T is caught is prevented from entering the front guide rail 47. This can be prevented, and the vertical transfer machine frame 41 can be reinforced by the cover body 54.
[0072]
As shown in FIGS. 5 and 6, the vertical feed interlocking mechanism 39 is a lower side formed in an L shape on a cam support shaft 55 (see FIG. 1) provided in the horizontal transport mechanism 36 with its axis line directed in the left-right direction. The base end portion 56a of the swinging action body 56 is interlocked and connected, so that the front end portion 56b of the lower swinging action body 56 is freely swingable in the front-rear direction. The support piece 46 of the support frame body 40 located above the support frame 46 can swing freely through a swing support shaft 58 whose axis is directed in the front-rear direction in the middle part of the upper swing action body 57 formed in an L shape. The tip end portion 56b of the lower swinging action body 56 acts on the lower part of the lower extension piece 57a of the upper swinging action body 57 so as to pivot the upper swinging action body 57 to the swing support shaft 58. It is made to rock | fluctuate in the front-back direction centering on.
[0073]
The upper swing acting body 57 is integrally attached to the boss portion 59 that is rotatably attached to the swing support shaft 58, and the upper end portion of the lower extension piece 57a is integrally attached to the boss portion 59. The adjustment piece 57b protrudes forward and is integrally attached, and an adjustment elongated hole 60 extending in the vertical direction is formed in the rotation position adjustment piece 57b, while the front extension piece extending forward on the swing support shaft 58. The base end portion of 57c is pivotally supported so that it can be pivoted up and down, and the pivot position adjusting pin 61 projecting in the middle portion of the front extension piece 57c is inserted into the adjustment slot 60 and the pivot position. A knurled nut 62 is screwed to the tip of the adjustment pin 61.
[0074]
In this way, the angled nut 62 is loosened, the front extending piece 57c is adjusted in the vertical rotation position, and the angled nut 62 is tightened to adjust the relative angle with the downward extending piece 57a. I can do it.
[0075]
Accordingly, the driving torque can be suppressed by optimally adjusting the stroke of the seedling tray T having a different required stroke. And the timing of the vertical feed and the horizontal feed due to the difference in the seedling tray T can be set to an optimum state. Further, it is possible to adjust a shift in stroke amount due to parts and assembly errors.
[0076]
In addition, a ratchet 63 is attached to the vertical feed shaft 42 provided in the vertical transport mechanism 35, and a ratchet locking body 64 is disposed in the vicinity of the ratchet 63, and the ratchet locking body 64 has an axial line in the left-right direction. The locking piece 64a that is pivotally supported by the locking body support shaft 65 that faces the upper side and forms the locking piece 64a that is locked to the ratchet 63 at the upper end portion, and the contact piece 64b that is in contact with the ratchet 63 is formed at the lower end portion, The locking piece 64a is elastically biased in the direction of locking to the ratchet 63 by the locking tension spring 66.
[0077]
Further, the middle part of the unlocking body 67 is attached to the longitudinal feed shaft 42, and one side end of the unlocking body 67 serves as an unlocking action piece 67a. In contact with the inner peripheral end 64c of the ratchet locking body 64 in a slidable manner, in the side view of FIG. 6, in conjunction with the upward (clockwise) rotation of the locking release action piece 67a. The ratchet locking body 64 is rotated counterclockwise around the locking body support shaft 65 so that the locking piece 64a locked to the ratchet 63 can be unlocked.
[0078]
On the other hand, the other end of the unlocking body 67 is a connection piece 67b, and the front end of the front extension piece 57c is connected to the rear end of the connection piece 67b via a connection pin 68. A tension spring 69 is interposed between 67b and the support frame 40, and the locking release body 67 is urged to rotate clockwise in the side view of FIG. 6 by the tension spring 69. 70 is a spring connecting piece.
[0079]
In this way, in the side view of FIG. 6, when the cam support shaft 55 is rotated to rotate the lower swinging action body 56 in the clockwise direction, the upper swinging action body 56 is linked to the upper side. The swing action body 57 rotates counterclockwise around the swing support shaft 58, and the unlocking body 67 connected to the tip of the front and rear extension piece 57c of the upper swing action body 57 is vertically fed. The shaft 42 is rotated clockwise.
[0080]
As a result, as described above, the ratchet locking body 64 is rotated counterclockwise about the locking body support shaft 65, and the locking piece 64a locked to the ratchet 63 is unlocked. The ratchet 63 is rotated.
[0081]
When the ratchet 63 rotates by a predetermined pitch, the contact piece 64b provided on the ratchet locking body 64 contacts the ratchet 63, and the rotation of the ratchet 63 is stopped.
[0082]
Accordingly, the sprocket 43 coaxially attached to the ratchet 63 and the longitudinal feed support shaft 42 rotates, and the seedling tray T is surely vertically fed by one stage of the seedling pot P through the longitudinal feed chain 45. .
[0083]
Further, in this embodiment, the vertical feed operation lever 31 is attached to the vertical feed shaft 42 via the boss portion 30, and the vertical feed operation lever 31 is interlocked and connected to the lock release body 67 via the boss portion 30. .
[0084]
In this way, as shown in FIG. 6, the longitudinal feed operation lever 31 is pivoted clockwise to rotate the latch release body 67 clockwise and latched by the ratchet 63. The latch piece 64a of the ratchet latch 64 can be unlocked, that is, the seedling tray T can be manually fed vertically.
[0085]
Here, a stopper piece 32 is disposed below the connecting piece 67b of the unlocking body 67, and the clockwise turning operation of the longitudinal feed operation lever 31 is restricted by the stopper piece 32.
[0086]
In this way, the vertical feed operation lever 31 vertically feeds the seedling tray T by one stage of the seedling pot P so that vertical feeding of two stages or more cannot be performed.
[0087]
Further, a rotation restricting piece 33 is also arranged in the counterclockwise rotation direction of the vertical feed operation lever 31 so as to restrict the rotation of the vertical feed operation lever 31.
[0088]
In this way, when the seedling tray T is switched, the lock release body 67 is unlocked so that the lock release body 67 does not rotate more than necessary with the accumulated driving force. The initial phase of the unlocking body 67 can be prevented from shifting.
[0089]
FIG. 7 shows a transplanting machine A as another embodiment. In the transplanting machine A, in the upper position of the seedling transplanting section 3, the preliminary seedling mounting bases 13, 13, 13, 13 are vertically moved on the left and right sides, respectively. In addition to the three-dimensional arrangement in two stages, the upper-stage preliminary seedling platforms 13, 13 are shifted from the lower-stage preliminary seedling platforms 13, 13 in a direction away from the operator position.
[0090]
Thus, by arranging the preliminary seedling stage 13 in a three-dimensional manner, the number of seedling trays T can be increased, and the upper and lower stage preliminary seedling stages 13 and 13 are displaced in the front-rear direction. By performing (offset), the seedling tray T placed on the lower preliminary seedling stage 13 can be easily taken out.
[0091]
Further, the upper and lower standby seedling platforms 13, 13 can be arranged so as to be displaced in the inner / outer direction (left / right direction) according to the ease of taking out the seedling tray T and the like.
[0092]
【The invention's effect】
(1) In the present invention described in claim 1, in the traveling part, a pressure reducing wheel which is arranged near the lower part of the seedling transplanting part to suppress the seedling transplanting surface and also functions as a lift sensor, and a covering ring which covers the transplanted seedling. And raising and lowering the traveling part based on the detection result of the pressure wheel, so that the seedling transplanting depth by the seedling transplanting part can be controlled to be constant, Relative position of pressure wheel and airframe during sensing Is provided with a planting depth adjusting means for adjusting the planting depth, and a soil covering pressure setting / applying device for setting / applying a required soil covering pressure to the soil covering ring is provided. In conjunction with the depth adjusting means, the cover ring is also moved up and down in conjunction with the planting depth adjustment of the planting depth adjusting means so that the soil covering pressure is maintained at the set pressure.
[0093]
In this way, by placing a pressure-reducing wheel that suppresses the seedling transplant surface in the vicinity of the lower part of the seedling transplanting part and also functions as a lifting sensor, and raises and lowers the traveling part based on the detection result of the pressure reducing wheel, Since the seedling planting depth by the transplant part can be controlled to be constant, seedling planting work can be performed with high accuracy.
[0094]
Moreover, when the planting depth is adjusted by adjusting the sensing position of the pressure reducing wheel by the planting depth adjusting means, the cover ring is also moved up and down in conjunction with it, so that the soil pressure is maintained at the set pressure. Therefore, there is no need to perform the planting depth adjustment work and the soil cover pressure setting work individually one by one, and the planting depth adjustment and soil cover pressure setting can be performed almost simultaneously and easily.
[0095]
(2) In the present invention described in claim 2, the cover ring is connected to the pressure reducing wheel via the cover ring support, and the load shared by the cover ring and the cover ring support is caused to act on the pressure reduction wheel as a downward load. I have to.
[0096]
In this way, since the load shared by the earthen ring and the earthen ring support can be applied as a descending load to the pressure wheel, the pressure load can be secured without increasing the weight of the pressure wheel. The total weight of the pressure reducing wheel can be reduced, and the pressure reducing wheel can function well as a lift sensor.
[Brief description of the drawings]
FIG. 1 is a side view of a transplanter according to the present invention.
FIG. 2 is a plan view of the transplanter.
FIG. 3 is a side view of a planting depth adjusting means.
FIG. 4 is a plan view of the planting depth adjusting means.
FIG. 5 is a side view of a vertical feed mechanism as another embodiment.
FIG. 6 is an explanatory side view of a longitudinal feed interlocking mechanism as another embodiment.
FIG. 7 is a perspective view of a transplanter as another embodiment.
[Explanation of symbols]
A transplanter
1 Traveling part
2 Seedling supply department
3 seedling transplanting department
4 Airframe frame
5 Front wheel support arm
6 Front wheels
7 Rear wheel drive case
8 Rear wheels

Claims (2)

昇降機能を有する走行部と、同走行部の後部に配設した苗供給部と、同苗供給部の前方位置に配設した苗移植部とを装備する移植機において、
走行部に、苗移植部の下方近傍に配置して苗移植面を鎮圧すると共に昇降センサとしても機能する鎮圧輪と、移植苗に覆土する覆土輪とを設けて、上記鎮圧輪の検出結果に基づいて走行部を昇降させることにより、苗移植部による苗植付深さを一定に制御可能となすと共に、センシング時の鎮圧輪と機体との相対位置を調節して植付深さを調節する植深調節手段を設ける一方、
覆土輪に所要の覆土圧を設定・付与する覆土圧設定・付与手段を設け、同覆土圧設定・付与手段を前記植深調節手段に連動連結して、同植深調節手段の植深調節に連動して覆土輪も上下動して、覆土圧が設定圧に保持されるようにしたことを特徴とする移植機。
In a transplanting machine equipped with a traveling unit having a lifting function, a seedling supply unit disposed at the rear of the traveling unit, and a seedling transplanting unit disposed at a front position of the seedling supply unit,
The traveling part is provided with a pressure-reducing wheel that is arranged near the lower part of the seedling transplanting part to suppress the seedling transplanting surface and also functions as a lifting sensor, and a covering ring that covers the transplanted seedling. By raising and lowering the traveling part based on it, it becomes possible to control the seedling planting depth by the seedling transplanting part uniformly, and also adjust the planting depth by adjusting the relative position of the pressure wheel and the body during sensing While providing planting depth adjustment means,
A soil cover pressure setting / applying means for setting / applying a required soil pressure is provided on the soil cover ring, and the soil cover pressure setting / applying means is linked to the planting depth adjusting means to adjust the planting depth of the planting depth adjusting means. The transplanting machine is characterized in that the cover ring is moved up and down in conjunction with the cover so that the cover pressure is maintained at the set pressure.
鎮圧輪に覆土輪支持体を介して覆土輪を連結すると共に、同覆土輪及び覆土輪支持体の分担荷重を鎮圧輪に下降荷重として作用させるようにしたことを特徴とする請求項1記載の移植機。  2. The earthen ring is connected to the pressure reducing wheel via the earthen ring support, and the share load of the earthen ring and the earthen ring support is made to act on the pressure reducing wheel as a descending load. Transplanter.
JP2003066508A 2003-03-12 2003-03-12 Transplanter Expired - Lifetime JP4160425B2 (en)

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JP4160425B2 true JP4160425B2 (en) 2008-10-01

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Publication number Priority date Publication date Assignee Title
CN103959965B (en) * 2013-01-25 2016-03-16 湖北工业大学 The cotton transplantation of seedlings facility of pneumatic convey
JP6277945B2 (en) * 2014-11-21 2018-02-14 井関農機株式会社 Transplanter

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