JP4082986B2

JP4082986B2 - Ride type rice transplanter

Info

Publication number: JP4082986B2
Application number: JP2002323934A
Authority: JP
Inventors: 正一中村
Original assignee: Kubota Corp
Current assignee: Kubota Corp
Priority date: 2002-11-07
Filing date: 2002-11-07
Publication date: 2008-04-30
Anticipated expiration: 2022-11-07
Also published as: JP2004154072A

Description

【０００１】
【発明の属する技術分野】
本発明は、走行機体の後部に連結した苗植付装置を、左右の苗植付部に分離してそれらの向きを左右向きに変更した格納姿勢と、前記左右の苗植付部を前向きに変更して連結した作業姿勢とに姿勢切り換え可能に構成するとともに、該走行機体に装備した貯留部内の貯留物を、該貯留部から前記左右の苗植付部にわたる複数の案内管を介して圃場に供給する供給装置を装備してある乗用形田植機に関する。
【０００２】
【従来の技術】
従来、上記のような乗用形田植機においては、走行機体にリンク機構を介して連結された固定フレームに対して、その左右両端に上下向きの支軸周りに揺動可能に連結された第１揺動フレームと、それらの遊端に上下向きの支軸周りに天秤揺動可能に連結された第２揺動フレームとを揺動変位させることで、苗植付装置を作業姿勢と格納姿勢とに切り換えられるように構成し、又、走行機体に装備したホッパー内の肥料を複数のホースなどを介して圃場に供給する施肥装置を供給装置として装備し、更に、各ホースを、走行機体側と苗植付装置側とに分離可能に構成するとともに、固定フレームに固定装備された第１支持板によって走行機体側のホースにおける分離側の端部を支持し、かつ、第２揺動フレームに固定装備された第２支持板によって苗植付装置側のホースにおける分離側の端部を支持するようにしたものがあった（例えば特許文献１参照。）。
【０００３】
【特許文献１】
特開２００２−２３８３１６号公報（段落番号００２１、００３３−００３８、図１−４、７、８、１１−１３）
【０００４】
【発明が解決しようとする課題】
上記の従来技術によると、各ホースを接続した状態のままで苗植付装置の姿勢を切り換えていた場合に生じる虞のあるホースの絡み付きや疲労によるホースの損傷を防止することができるのであるが、苗植付装置の格納姿勢から作業姿勢への姿勢切り換えに連動したホース接続の円滑化やホース接続保持の確実化を図るために苗植付装置の作業姿勢では互いに接近するように配置されている第１支持板と第２支持板とを、固定フレームや第２揺動フレームに固定装備したことによって、苗植付装置の姿勢を切り換える際の第１揺動フレームと第２揺動フレームとの連動揺動において、それらの揺動タイミングに組み付け誤差などに起因したズレが生じた場合に、苗植付装置の姿勢切り換えの際に左右の苗植付部とともに変位する苗植付装置側のホースや第２支持板が、苗植付装置を作業姿勢から格納姿勢に切り換える際の姿勢切り換え開始直後や、苗植付装置を格納姿勢から作業姿勢に切り換える際の姿勢切り換え終了間際に、走行機体側のホースや第１支持板に不適切に接触する虞があり、その接触が生じた場合には、ホースや支持板が損傷する不都合や各ホースの接続が不十分になる不都合などを招くようになっていた。
【０００５】
本発明の目的は、苗植付装置の姿勢を切り換える際に、案内管の苗植付装置側となる下手側管部の分離側端部や支持部材が走行機体側となる上手側管部の分離側端部や支持部材に不適切に接触して損傷する不都合や、上手側管部の分離側端部と下手側管部の分離側端部との接続が不十分になる不都合などの発生を回避できるようにすることにある。
【０００６】
【課題を解決するための手段】
〔構成〕
上記目的を達成するため、本発明のうちの請求項１に記載の発明では、走行機体の後部に連結した苗植付装置を、左右の苗植付部に分離してそれらの向きを左右向きに変更した格納姿勢と、前記左右の苗植付部を前向きに変更して連結した作業姿勢とに姿勢切り換え可能に構成するとともに、該走行機体に装備した貯留部内の貯留物を、該貯留部から前記左右の苗植付部にわたる複数の案内管を介して圃場に供給する供給装置を装備してある乗用形田植機において、前記案内管のそれぞれを、前記走行機体と前記苗植付装置との間で上手側管部と下手側管部とに分離可能に構成し、前記左右の苗植付部に、前記苗植付装置の前記作業姿勢から前記格納姿勢への姿勢切り換え操作に連動して、前記上手側管部の分離側端部を前記走行機体側に変位させて前記下手側管部の分離側端部から離間し、かつ、前記苗植付装置の前記格納姿勢から前記作業姿勢への姿勢切り換え操作に連動して、前記上手側管部の分離側端部を前記苗植付装置側に変位させて前記下手側管部の分離側端部に接続する連動機構を設けた。
【０００７】
〔作用〕
上記請求項１に記載の発明によると、苗植付装置を作業姿勢から格納姿勢に切り換える際には、その操作に連動して、連動機構が、上手側管部の分離側端部を下手側管部の属する苗植付装置とは反対側の走行機体側、つまり、下手側管部の分離側端部に対する分離方向に向けて変位させることによって、上手側管部の分離側端部を下手側管部の分離側端部から離間させるようになることから、上手側管部の分離側端部を下手側管部の分離側端部から円滑かつ速やかに分離させることができるようになる。
【０００８】
逆に、苗植付装置を格納姿勢から作業姿勢に切り換える際には、その操作に連動して、連動機構が、上手側管部の分離側端部を下手側管部の属する苗植付装置側、つまり、下手側管部の分離側端部に対する接続方向に向けて変位させることによって、上手側管部の分離側端部を下手側管部の分離側端部に接続するようになることから、上手側管部の分離側端部を下手側管部の分離側端部に円滑かつ速やかに接続することができるようになる。
【０００９】
又、上手側管部の分離側端部を支持する上手側支持部材と下手側管部の分離側端部を支持する下手側支持部材とを、苗植付装置の格納姿勢から作業姿勢への姿勢切り換えに連動したホース接続の円滑化やホース接続保持の確実化を図るために、苗植付装置の作業姿勢において互いに接近するように配置しても、連動機構の作用によって、苗植付装置を作業姿勢から格納姿勢に切り換える際の姿勢切り換え開始直後や、苗植付装置を格納姿勢から作業姿勢に切り換える際の姿勢切り換え終了間際においても、上手側管部と下手側管部の分離側端部同士及び支持部材同士が比較的大きく離間するようになることから、苗植付装置の姿勢切り換えの際に、左右の苗植付部とともに変位する下手側管部の分離側端部や下手側支持部材が、上手側管部の分離側端部や上手側支持部材に不適切に接触する虞を回避できるようになる。
【００１０】
〔効果〕
従って、苗植付装置の姿勢切り換えに連動した案内管における上手側管部の分離側端部と下手側管部の分離側端部との着脱を円滑かつ速やかに行える上に、苗植付装置の姿勢切り換えの際に、下手側管部の分離側端部や下手側支持部材が上手側管部の分離側端部や上手側支持部材に不適切に接触して案内管や支持部材が損傷する不都合や、上手側管部の分離側端部と下手側管部の分離側端部との接続が不十分になる不都合などの発生を回避できるようになり、もって、苗植付装置の姿勢切り換えをより容易かつ良好に行えるようになった。
【００１１】
〔構成〕
本発明のうちの請求項２に記載の発明では、上記請求項１に記載の発明において、前記苗植付装置を、前記格納姿勢では前記左右の苗植付部が対向するように構成し、前記連動機構が、前記苗植付装置の姿勢切り換え操作に連動して、前記苗植付装置の左右中央部に配置された案内管以外の左右両外側部に配置された案内管を変位させるように構成した。
【００１２】
〔作用〕
上記請求項２に記載の発明によると、苗植付装置の格納姿勢では左右の苗植付部が対向するように構成したことで、苗植付装置の左右中央部に位置する案内管における下手側管部の分離側端部が、苗植付装置を作業姿勢から格納姿勢に切り換える際には、その姿勢切り換え開始とともに上手側管部の分離側端部から離間する方向に大きく変位し、逆に、苗植付装置を格納姿勢から作業姿勢に切り換える際には、その姿勢切り換え終了間際に上手側管部の分離側端部に向かう方向に大きく変位するようになることから、苗植付装置の左右中央部に位置する上手側管部の分離側端部を苗植付装置の姿勢切り換えに連動して変位させなくても、苗植付装置の姿勢切り換えの際に、下手側管部の分離側端部や下手側支持部材が上手側管部の分離側端部や上手側支持部材に不適切に接触する虞を回避できるようになり、これによって、苗植付装置の姿勢切り換えに連動して分離側端部を変位させる必要のある上手側管部の数量を削減することができ、それらの変位を可能にするための構造の簡素化を図れるようになる。
【００１３】
〔効果〕
従って、苗植付装置の姿勢切り換えに連動した案内管における上手側管部の分離側端部と下手側管部の分離側端部との着脱を円滑かつ速やかに行える上に、苗植付装置の姿勢切り換えの際に、下手側管部の分離側端部や下手側支持部材が上手側管部の分離側端部や上手側支持部材に不適切に接触して案内管や支持部材が損傷する不都合や、上手側管部の分離側端部と下手側管部の分離側端部との接続が不十分になる不都合などの発生を回避できるようにしながらも、構造の簡素化を図れるようになった。
【００１４】
【発明の実施の形態】
図１には乗用形田植機の全体側面が示されており、この田植機は、乗用形に形成された走行機体１の後部に、油圧式のリフトシリンダ２の作動で昇降揺動するリンク機構３を介して苗植付装置４を駆動昇降可能に連結し、かつ、施肥装置（供給装置の一例）５を装備することによって構成されている。
【００１５】
走行機体１は、その前部に搭載されたエンジン６からの走行用動力を、静油圧式無段変速装置７やギヤ式変速装置８などを介して、左右の前輪９及び後輪１０に伝達する四輪駆動形式に構成され、その中央部には、左右の前輪９を操向するステアリングホイール１１や運転座席１２などを備えた搭乗運転部１３が形成されている。
【００１６】
図１〜６に示すように、苗植付装置４は、左右の苗植付部１４に分離してそれらの向きを左右向きに変更して対向させた格納姿勢と、左右の苗植付部１４を前向きに変更して連結した作業姿勢とに姿勢切り換え可能に構成された１０条植え用のものであり、格納姿勢に切り換えた状態では、その左右幅を走行機体１の左右幅と略同じになる程度まで減少させることができ、これによって、１０条植え用のものでありながら、トラックにその荷台の左右幅内に収まる状態に積載して輸送することができるようになっている。
【００１７】
左右の苗植付部１４は、それらの主フレーム１５が、リンク機構３の後部に連結される固定フレーム１６の両端部にそれぞれ上下向きの第１支軸１７周りに揺動可能に連結された左右の揺動フレーム１８のうちの対応するものの遊端に、上下向きの第２支軸１９周りに天秤揺動可能に連結され、対応する主フレーム１５と揺動フレーム１８とが、苗植付装置４を作業姿勢から格納姿勢に切り換える際には、主フレーム１５の内端側を後方に向けて変位させる主フレーム１５の揺動操作に連動して揺動フレーム１８が半減した速度で後方に向けて揺動し、又、苗植付装置４を格納姿勢から作業姿勢に切り換える際には、主フレーム１５の後端側を前内方に向けて変位させる主フレーム１５の揺動操作に連動して揺動フレーム１８が半減した速度で前外方に向けて揺動するように、チェーン式連動機構２０を介して連動連結されている。
【００１８】
固定フレーム１６には、走行機体１からの作業用動力を苗植付装置４に伝達する伝動軸２１が支持されており、苗植付装置４の姿勢を切り換える際には、その操作に伴って右側の苗植付部１４に装備した動力分配機構２２の入力軸２３が伝動軸２１に着脱されるとともに、動力分配機構２２の出力軸２４が左側の苗植付部１４に属する動力供給機構２５の入力軸２６に着脱されるようになっている。
【００１９】
左側の苗植付部１４は、その動力供給機構２５に伝達された動力が、横送り機構２７、縦送り機構２８、及び２つの植付伝動機構２９に分配供給され、各植付伝動機構２９からそれらの後端部に装備された左右の植付機構３０に伝達されるようになっている。
【００２０】
右側の苗植付部１４は、その動力分配機構２２から動力供給機構２５に伝達された動力が、縦送り機構２８と３つの植付伝動機構２９に分配供給され、各植付伝動機構２９からそれらの後端部に装備された左右の植付機構３０に伝達されるようになっている。
【００２１】
左側の苗植付部１４には、３条分の整地を行う第１整地フロート３１、２条分の整地を行う第２整地フロート３２、及び、４条分の苗を載置する苗載台３３が装備され、右側の苗植付部１４には、３条分の整地を行う第１整地フロート３１、２条分の整地を行う第２整地フロート３２、及び、６条分の苗を載置する苗載台３３が装備されている。左右の苗載台３３は、対応する主フレーム１５から立設された支持枠３４に左右摺動可能に支持されるとともに、苗植付装置４を作業姿勢に切り換えた状態では一体摺動可能に連結されるようになっている。
【００２２】
上記の構成から、苗植付装置４は、作業姿勢に切り換えた状態では、機体の走行に伴って４つの整地フロート３１，３２が苗植え付け箇所を前もって整地する一方で、横送り機構２７の作動によって左右の苗載台３３が左右方向に一定ストロークで一体的に往復駆動され、縦送り機構２８の作動によって、左右の苗載台３３が左右のストロークエンドに到達するごとに各苗載台３３に載置されたマット状苗が縦送りされ、かつ、各植付機構３０が、対応する苗載台３３の下端から苗を所定量ずつ取り出して圃場に植え付ける苗植え付け作動を行うようになり、又、格納姿勢に切り換えた状態では、４条の左苗植付部１４と６条の右苗植付部１４とに分割されるようになっている。
【００２３】
図１、図２及び図７〜１０に示すように、施肥装置５は、ギヤ式変速装置８から後輪用伝動装置３５にわたる伝動軸３６に装備された動力取出機構３７によって取り出された走行用動力が、ワンウェイクラッチ３８などを介して、走行機体１の後部にホッパー（貯留部の一例）３９とともに載置された５つの繰出機構４０に伝達されることで、各繰出機構４０がホッパー３９から２条分ずつの肥料を繰り出し、その繰り出された肥料を、電動式のブロア４１の作動により、各繰出機構４０の排出口４２から各整地フロート３１，３２における各植付機構３０の横近傍箇所に配備された各作溝器４３にわたる各案内ホース（案内管の一例）４４を介して圧送することで、各植付機構３０によって植え付けられた苗の横側近傍に施肥するように構成されている。
【００２４】
各案内ホース４４は、走行機体１と苗植付装置４との間において、繰出機構４０に接続された上手側管部４５と作溝器４３に接続された下手側管部４６とに分離可能に構成され、上手側管部４５の分離側端部４７と下手側管部４６の分離側端部４８とが、苗植付装置４の姿勢切り換えに連動して着脱されるようになっている。
【００２５】
図１〜３、図５、図６及び図８〜１３に示すように、固定フレーム１６の左右両端には、左右向きの支軸４９を介して前後揺動可能に支持された揺動アーム５０が立設され、それらの上端部には、１０本の案内ホース４４のうちの対応する左右各４本の案内ホース４４における上手側管部４５の分離側端部４７をゴム製のブーツ５１を介して支持する横長で板金製の上手側支持部材５２が溶接装備されている。又、固定フレーム１６の左右中央には、左右一対の縦長で板金製の上手側支持部材５３が立設され、それらの上端部に、左右中央に位置する２本の案内ホース４４のうちの対応する案内ホース４４における上手側管部４５の分離側端部４７がゴム製のブーツ５１を介して支持されている。
【００２６】
一方、左右の各苗植付部１４における支持枠３４の上端部には、１０本の案内ホース４４のうちの対応する左右各４本の案内ホース４４における下手側管部４６の分離側端部４８をゴム製のブーツ５４を介して支持する板金製の下手側支持部材５５と、左右中央に位置する２本の案内ホース４４のうちの対応する案内ホース４４における下手側管部４６の分離側端部４８をゴム製のブーツ５４を介して支持する板金製の下手側支持部材５６とが溶接装備されている。
【００２７】
固定フレーム１６側の左右の上手側支持部材５２には、左右向きの係止ピン５７が装備され、左右の支持枠３４に装備された下手側支持部材５５には、後窄まり形状の凹部が形成された係合片５８が立設されている（図３参照）。又、下手側管部４６に装着されるブーツ５４はその上部が蛇腹状に形成され、その上端部にはリング状の磁石５９が装着されている（図１３参照）。
【００２８】
左右の各揺動アーム５０の基端部には、苗植付装置４の作業姿勢から格納姿勢への姿勢切り換え操作に連動して、対応する左右４本の案内ホース４４における上手側管部４５の分離側端部４７と上手側支持部材５２とを、走行機体１側に変位させて対応する下手側管部４６の分離側端部４８や下手側支持部材５５から離間させ、かつ、苗植付装置４の格納姿勢から作業姿勢への姿勢切り換え操作に連動して、対応する左右４本の案内ホース４４における上手側管部４５の分離側端部４７と上手側支持部材５２とを苗植付装置４側に変位させて、各上手側管部４５の分離側端部４７を対応する下手側管部４６の分離側端部４８に接続し、かつ、上手側支持部材５２を対応する下手側支持部材５５に接近させるとともに、それらの対応する係止ピン５７と係合片５８とを係合させる連動機構６０が装備されている。
【００２９】
各連動機構６０は、固定フレーム１６に上下向きの支軸６１周りに揺動可能に装備された天秤アーム６２、この天秤アーム６２の一端を対応する揺動フレーム１８側に揺動付勢する付勢バネ６３、この付勢バネ６３の付勢による天秤アーム６２の揺動を固定フレーム１６との接当で規制するストッパ６４、及び、天秤アーム６２の他端を対応する揺動アーム５０の基端部に連動連結する連係バネ６５、などによって構成されており、苗植付装置４が作業姿勢から格納姿勢に切り換えられる際には、左右の各揺動フレーム１８が後方に向けて揺動するのに伴って、左右の天秤アーム６２が付勢バネ６３の付勢によって追従揺動するとともに連係バネ６５を介して左右の揺動アーム５０を走行機体１側に押し出すことによって、対応する左右４本の案内ホース４４における上手側管部４５の分離側端部４７と上手側支持部材５２とを走行機体１側に変位させ、又、苗植付装置４が格納姿勢から作業姿勢に切り換えられる際には、左右の各揺動フレーム１８が前方に向けて揺動するのに伴って、左右の天秤アーム６２が付勢バネ６３の付勢に抗する方向に対応する揺動フレーム１８によって押し出されるとともに連係バネ６５を介して左右の揺動アーム５０を苗植付装置４側に引き込むことによって、対応する左右４本の案内ホース４４における上手側管部４５の分離側端部４７と上手側支持部材５２とを苗植付装置４側に変位させるようになっている。
【００３０】
以上の構成から、苗植付装置４を作業姿勢から格納姿勢に切り換える際には、その操作によって、左右の揺動フレーム１８が後方に向けて揺動するとともに、左右の主フレーム１５が対応する揺動フレーム１８の揺動方向と反対方向に揺動することで、苗植付装置４の左右中央に位置する２本の案内ホース４４における下手側管部４６の分離側端部４８と、それらを支持する右側の下手側支持部材５５における左側の端部とが、その姿勢切り換え開始とともに対応する上手側管部４５の分離側端部４７や上手側支持部材５３から離間する方向に大きく変位するようになり、又、その操作に連動して、左右の連動機構６０が、対応する左右各４本の案内ホース４４における上手側管部４５の分離側端部４７と、それらを支持する左右の上手側支持部材５２とを走行機体１側に向けて変位させることによって、それら上手側管部４５の分離側端部４７や支持板５２が、その姿勢切り換え開始直後から、対応する下手側管部４６の分離側端部４８や下手側支持部材５５から比較的大きく離間するようになることから、苗植付装置４の作業姿勢から格納姿勢への姿勢切り換えの際に、左右の苗植付部１４とともに変位する下手側管部４６の分離側端部４８や下手側支持部材５５，５６が、上手側管部４５の分離側端部４７や上手側支持部材５２，５３に不適切に接触する虞を回避できるようになっている。
【００３１】
又、苗植付装置４を格納姿勢から作業姿勢に切り換える際には、その操作によって、左右の揺動フレーム１８が前方に向けて揺動するとともに、左右の主フレーム１５が対応する揺動フレーム１８の揺動方向と反対方向に揺動することで、苗植付装置４の左右中央に位置する２本の案内ホース４４における下手側管部４６の分離側端部４８と、それらを支持する右側の下手側支持部材５５における左側の端部とが、その姿勢切り換え終了間際において対応する上手側管部４５の分離側端部４７や上手側支持部材５３に向けて大きく変位するようになり、又、その操作に連動して、左右の連動機構６０が、対応する左右各４本の案内ホース４４における上手側管部４５の分離側端部４７と、それらを支持する左右の上手側支持部材５２とを苗植付装置４側に向けて変位させることによって、それら上手側管部４５の分離側端部４７や支持板５２が、その姿勢切り換え終了間際においても、対応する下手側管部４６の分離側端部４８や下手側支持部材５５から比較的大きく離間するようになることから、苗植付装置４の格納姿勢から作業姿勢への姿勢切り換えの際に、左右の苗植付部１４とともに変位する下手側管部４６の分離側端部４８や下手側支持部材５５，５６が、上手側管部４５の分離側端部４７や上手側支持部材５２，５３に不適切に接触する虞を回避できるようになっている。
【００３２】
しかも、苗植付装置４の作業姿勢から格納姿勢への姿勢切り換え操作に連動して連動機構６０が上手側管部４５の分離側端部４７を変位させる方向が、下手側管部４６の分離側端部４８に対する分離方向であることから、上手側管部４５の分離側端部４７を下手側管部４６の分離側端部４８から円滑かつ速やかに分離させることができ、又、苗植付装置４の格納姿勢から作業姿勢への姿勢切り換え操作に連動して連動機構６０が上手側管部４５の分離側端部４７を変位させる方向が、下手側管部４６の分離側端部４８に対する接続方向であることから、上手側管部４５の分離側端部４７を下手側管部４６の分離側端部４８に円滑かつ速やかに接続できるようになっている。
【００３３】
更に、下手側管部４６に装着されるブーツ５４の上部を蛇腹状に形成し、その上端部にリング状の磁石５９を装着し、更に、左右の上手側支持部材５２には左右向きの係止ピン５７を装備し、対応する係止ピン５７と係合する係合片５８を左右の下手側支持部材５５に立設したことで、上手側管部４５の分離側端部４７と下手側管部４６の分離側端部４８とが分離される際には、上手側支持部材５２，５３に対する磁石５９の吸着作用によって、ブーツ５４の上部が分離方向に十分に引き伸ばされた後に上手側管部４５の分離側端部４７と下手側管部４６の分離側端部４８とが分離されるようになり、これによって、上手側管部４５の分離側端部４７と下手側管部４６の分離側端部４８とが接続される際には、ブーツ５４の上部が上手側管部４５の分離側端部４７を迎える状態になっていることから、上手側管部４５の分離側端部４７と下手側管部４６の分離側端部４８との接続をより円滑に行えるようになり、又、上手側管部４５の分離側端部４７と下手側管部４６の分離側端部４８とが接続される際には、ブーツ５４の磁石５９が上手側管部４５の分離側端部４７に外嵌した後に上手側支持部材５２，５３に吸着し、その後、上手側支持部材５２，５３と下手側支持部材５５とが互いにブーツ５４の上部を押し縮めながら接近して左右の係止ピン５７と係合片５８とを係合させることから、上手側管部４５の分離側端部４７と下手側管部４６の分離側端部４８とを接続した状態では、上手側支持部材５２，５３と下手側支持部材５５とがブーツ５４の上部を挟み込んだ状態で互いの上下変位が阻止されるようになり、もって、上手側管部４５の分離側端部４７と下手側管部４６の分離側端部４８との接続を強固にすることができて、接続箇所からの雨水などの浸入を確実に阻止できるようになっている。
【００３４】
尚、図２、図３、図１１及び図１２に示す符号６６は、揺動アーム５０との接当で揺動アーム５０の前方への倒伏を規制するストッパである。
【００３５】
〔別実施形態〕
以下、本発明の別実施形態を列記する。
〔１〕乗用形田植機としては、８条植え用や１２条植え用などに構成されたものであってもよい。
〔２〕苗植付装置４としては、同じ条数で左右に分割されるように構成されたものであってもよい。
〔３〕供給装置５としては、薬剤散布装置や直播装、あるいは、ペースト状の肥料を供給する施肥装置などであってもよい。
【図面の簡単な説明】
【図１】乗用形田植機の全体側面図
【図２】苗植付装置の側面図
【図３】苗植付装置の要部の正面図
【図４】苗植付装置の伝動構成を示す要部の平面図
【図５】苗植付装置の作業姿勢を示す平面図
【図６】苗植付装置の格納姿勢を示す平面図
【図７】施肥装置の背面図
【図８】苗植付装置を作業姿勢に切り換えた状態での各案内ホースの状態を示す概略平面図
【図９】苗植付装置の姿勢切り換え途中での各案内ホースの状態を示す概略平面図
【図１０】苗植付装置を格納姿勢に切り換えた状態での各案内ホースの状態を示す概略平面図
【図１１】（イ）苗植付装置を作業姿勢に切り換えた状態での連動機構の状態を示す要部の横断平面図
（ロ）苗植付装置を作業姿勢から変位させた状態での連動機構の状態を示す要部の横断平面図
【図１２】連動機構の構成を示す要部の縦断側面図
【図１３】（イ）案内ホースの接続状態を示す要部の縦断側面図
（ロ）案内ホースの分離状態を示す要部の縦断側面図
【符号の説明】
１走行機体
４苗植付装置
５供給装置
１４苗植付部
３９貯留部
４４案内管
４５上手側管部
４６下手側管部
４７分離側端部
４８分離側端部
６０連動機構[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a storage posture in which the seedling planting device connected to the rear part of the traveling machine body is separated into left and right seedling planting parts and their directions are changed to the left and right directions, and the left and right seedling planting parts face forward. The configuration is such that the posture can be switched to the work posture changed and connected, and the storage in the storage unit equipped in the traveling machine body is transferred to the farm field via a plurality of guide tubes extending from the storage unit to the left and right seedling planting units. The present invention relates to a riding type rice transplanter equipped with a supply device for supplying to a car.
[0002]
[Prior art]
Conventionally, in the riding type rice transplanter as described above, a first frame that is swingably connected around a vertical support shaft at both left and right ends of a fixed frame that is connected to a traveling machine body via a link mechanism. By swinging and displacing the swing frame and a second swing frame connected to the free ends of the swing end so as to swing the balance around the vertical support shaft, In addition, a fertilizer application device that supplies fertilizer in the hopper equipped on the traveling machine body to the field via a plurality of hoses is equipped as a supply device, and each hose is connected to the traveling machine body side. It is configured to be separable from the seedling planting device side, supports the separation side end of the hose on the traveling machine body by the first support plate fixedly mounted on the fixed frame, and is fixed to the second swing frame To the equipped second support plate It had those adapted to support the ends of the separating side of the hose seedling planting apparatus (for example, see Patent Document 1.).
[0003]
[Patent Document 1]
JP 2002-238316 A (paragraph numbers 0021, 0033-0038, FIGS. 1-4, 7, 8, 11-13)
[0004]
[Problems to be solved by the invention]
According to the above prior art, it is possible to prevent hose entanglement or damage to the hose due to fatigue, which may occur when the posture of the seedling planting device is switched with each hose connected. In order to facilitate the hose connection in conjunction with the switching of the seedling planting device from the retracted position to the working position and to ensure the holding of the hose connection, the seedling planting device is arranged so as to be close to each other. The first support plate and the second support plate that are fixedly mounted on the fixed frame or the second swing frame, the first swing frame and the second swing frame when the posture of the seedling planting device is switched, When there is a deviation due to assembly errors in the swing timing of the swinging of the seedling planting device, the seedling planting device is displaced together with the right and left seedling planting parts when the posture of the seedling planting device is switched. The hose or the second support plate immediately after the start of posture switching when the seedling planting device is switched from the working posture to the retracted posture, or immediately after the end of posture switching when the seedling planting device is switched from the stored posture to the working posture. There is a risk of inadequate contact with the side hose and the first support plate. If such contact occurs, it may cause inconvenience that the hose or support plate is damaged or that connection between the hoses is insufficient. It was.
[0005]
The object of the present invention is to change the posture of the seedling planting device, such as the separation-side end portion of the lower side pipe portion on the seedling planting device side of the guide tube and the upper side tube portion on which the support member is the traveling machine body side. Inconveniences such as inadequate contact with and damage to the separation side end and support member, and inadequate connection between the separation side end of the upper side pipe and the separation side end of the lower side pipe It is to be able to avoid.
[0006]
[Means for Solving the Problems]
〔Constitution〕
In order to achieve the above object, in the invention according to claim 1 of the present invention, the seedling planting device connected to the rear part of the traveling machine body is separated into left and right seedling planting parts and their directions are set to the left and right directions. And the storage posture in the storage unit equipped in the traveling machine body is stored in the storage unit. In the riding type rice transplanter equipped with a supply device for supplying to the field through a plurality of guide tubes extending from the left and right seedling planting portions to each of the guide tubes, the traveling machine body and the seedling planting device, The upper side pipe part and the lower side pipe part can be separated from each other, and the left and right seedling planting parts are linked to the posture switching operation from the working position of the seedling planting device to the retracted position. The separation side end of the upper side pipe is changed to the traveling machine body side. The separation side end of the upper side pipe part is separated from the separation side end part of the lower side pipe part and interlocked with the posture switching operation from the retracted position of the seedling planting device to the working position. The interlocking mechanism which displaces a part to the said seedling planting apparatus side and connects to the isolation | separation side edge part of the said lower side pipe part was provided.
[0007]
[Action]
According to the first aspect of the present invention, when the seedling planting device is switched from the working posture to the retracted posture, the interlocking mechanism moves the separation side end of the upper side pipe portion to the lower side in conjunction with the operation. The separation side end of the upper side pipe part is moved to the lower side by displacing toward the separation direction with respect to the separation side end of the lower side pipe part opposite to the seedling planting device to which the pipe part belongs. Since the side tube portion is separated from the separation side end portion, the separation side end portion of the upper side tube portion can be smoothly and quickly separated from the separation side end portion of the lower side tube portion.
[0008]
Conversely, when switching the seedling planting device from the retracted posture to the working posture, the interlocking mechanism interlocks with the operation, and the seedling planting device to which the separation side end of the upper side pipe portion belongs to the lower side pipe portion. By displacing in the direction of connection to the separation side end of the lower side pipe part, the separation side end part of the upper side pipe part is connected to the separation side end part of the lower side pipe part. Thus, the separation side end of the upper side pipe part can be smoothly and quickly connected to the separation side end of the lower side pipe part.
[0009]
Further, an upper support member that supports the separation side end of the upper side pipe part and a lower side support member that supports the separation side end of the lower side pipe part are moved from the stored posture of the seedling planting device to the working posture. Even if the seedling planting device is placed close to each other in the working posture of the seedling planting device in order to facilitate the hose connection linked to the posture switching and to ensure the hose connection retention, the seedling planting device is operated by the interlocking mechanism. Immediately after the start of posture switching when switching the working posture from the storage posture to the storage posture, or immediately after the end of the posture switching when switching the seedling planting device from the storage posture to the working posture, the separation side end of the upper side pipe portion and the lower side pipe portion Since the parts and the support members are relatively separated from each other, when the posture of the seedling planting device is switched, the separation side end or lower side of the lower side pipe part that is displaced together with the left and right seedling planting parts The support member is It becomes possible to avoid the risk of improper contact with the release-side end portion and the upstream side support member.
[0010]
〔effect〕
Therefore, the guide tube linked to the posture switching of the seedling planting device can smoothly and quickly attach and detach the separation side end portion of the upper side pipe portion and the separation side end portion of the lower side tube portion, and the seedling planting device. When the posture is switched, the separation-side end or lower-side support member of the lower-side pipe part improperly contacts the separation-side end or upper-side support member of the upper-side pipe part, resulting in damage to the guide tube or the support member. And the inconvenience of inadequate connection between the separation side end of the upper side pipe part and the separation side end of the lower side pipe part. Switching is now easier and better.
[0011]
〔Constitution〕
In the invention according to claim 2 of the present invention, in the invention according to claim 1, the seedling planting device is configured such that the left and right seedling planting portions face each other in the retracted posture, The interlocking mechanism displaces guide tubes disposed on both left and right outer portions other than the guide tube disposed at the left and right center of the seedling planting device in conjunction with the posture switching operation of the seedling planting device. Configured.
[0012]
[Action]
According to the second aspect of the present invention, in the retracted posture of the seedling planting device, the left and right seedling planting portions are configured to face each other, so that the lower side of the guide tube located at the left and right center portion of the seedling planting device. When the seedling planting device is switched from the working posture to the retracted posture, the separation side end of the side pipe portion is greatly displaced in a direction away from the separation side end portion of the upper side pipe portion as the posture switching starts, and vice versa. In addition, when the seedling planting device is switched from the retracted posture to the working posture, the seedling planting device is greatly displaced in the direction toward the separation-side end of the upper-side pipe portion at the end of the posture switching. Even if the separation-side end of the upper-side pipe located at the center of the left and right sides is not displaced in conjunction with the posture switching of the seedling planting device, Separation side end and lower side support member is separation side end of upper side pipe It is possible to avoid the possibility of improper contact with the upper support member, thereby reducing the number of upper pipe parts that need to displace the separation side end in conjunction with the posture switching of the seedling planting device. It is possible to simplify the structure for enabling these displacements.
[0013]
〔effect〕
Therefore, the guide tube linked to the posture switching of the seedling planting device can smoothly and quickly attach and detach the separation side end portion of the upper side pipe portion and the separation side end portion of the lower side tube portion, and the seedling planting device. When the posture is switched, the separation-side end or lower-side support member of the lower-side pipe part improperly contacts the separation-side end or upper-side support member of the upper-side pipe part, resulting in damage to the guide tube or the support member. It is possible to simplify the structure while avoiding the inconvenience of inconvenience and the inconvenience of insufficient connection between the separation side end of the upper side pipe and the separation side end of the lower side pipe. Became.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows the entire side surface of a riding type rice transplanter, which is a link mechanism that swings up and down by the operation of a hydraulic lift cylinder 2 at the rear of a traveling machine body 1 formed in a riding type. 3, the seedling planting device 4 is connected to be capable of being driven up and down, and a fertilizer application device (an example of a supply device) 5 is provided.
[0015]
The traveling machine body 1 transmits the traveling power from the engine 6 mounted on the front thereof to the left and right front wheels 9 and the rear wheels 10 via the hydrostatic continuously variable transmission 7 and the gear transmission 8. The boarding operation part 13 provided with the steering wheel 11 which steers the left-right front wheel 9, the driver's seat 12, etc. is formed in the center part.
[0016]
As shown in FIGS. 1-6, the seedling planting apparatus 4 is separated into the right and left seedling planting parts 14 and changed to the left and right directions so as to face each other, and the left and right seedling planting parts. 14 is for ten-row planting that is configured to be switched to a working posture that is changed forward and connected, and in the state that is switched to the retracted posture, the left-right width is substantially the same as the left-right width of the traveling machine body 1 Thus, while being for 10-row planting, the truck can be loaded and transported so as to fit within the left and right widths of the loading platform.
[0017]
The left and right seedling planting portions 14 are connected to both ends of a fixed frame 16 connected to the rear portion of the link mechanism 3 so that the main frame 15 can swing around the first support shaft 17 that is vertically directed. The free end of the corresponding one of the left and right swing frames 18 is connected to the up and down second support shaft 19 so as to be able to swing the balance, and the corresponding main frame 15 and swing frame 18 are planted with seedlings. When the device 4 is switched from the working posture to the retracted posture, the swing frame 18 moves backward at a speed reduced by half in conjunction with the swing operation of the main frame 15 that displaces the inner end side of the main frame 15 toward the rear. When the seedling planting device 4 is switched from the retracted position to the working position, it is interlocked with the swing operation of the main frame 15 that displaces the rear end side of the main frame 15 toward the front inward direction. The speed at which the swing frame 18 is halved So as to swing toward the front outside, it is interlocked through a chain-type linkage mechanism 20.
[0018]
The fixed frame 16 supports a transmission shaft 21 that transmits working power from the traveling machine body 1 to the seedling planting device 4. When the posture of the seedling planting device 4 is switched, the operation is accompanied by the operation. The input shaft 23 of the power distribution mechanism 22 equipped in the right seedling planting unit 14 is attached to and detached from the transmission shaft 21, and the output shaft 24 of the power distribution mechanism 22 is a power supply mechanism 25 belonging to the left seedling planting unit 14. The input shaft 26 is detachably attached.
[0019]
In the left seedling planting section 14, the power transmitted to the power supply mechanism 25 is distributed and supplied to the lateral feed mechanism 27, the vertical feed mechanism 28, and the two planting transmission mechanisms 29. Are transmitted to the left and right planting mechanisms 30 mounted on the rear end portions thereof.
[0020]
The right seedling planting unit 14 distributes and supplies the power transmitted from the power distribution mechanism 22 to the power supply mechanism 25 to the vertical feed mechanism 28 and the three planting transmission mechanisms 29. It is transmitted to the right and left planting mechanisms 30 mounted on the rear end portions thereof.
[0021]
The left seedling planting section 14 has a first leveling float 31 for leveling for three strips, a second leveling float 32 for leveling for strips, and a seedling platform for mounting seedlings for four strips. 33, and the right seedling planting section 14 is loaded with the first leveling float 31 that performs leveling for three strips, the second leveling float 32 that performs leveling for two strips, and the seedlings for six strips. A seedling stand 33 to be placed is equipped. The left and right seedling platforms 33 are supported by a support frame 34 erected from the corresponding main frame 15 so as to be slidable to the left and right, and can be slid integrally when the seedling planting device 4 is switched to the working position. It is designed to be connected.
[0022]
From the above configuration, in the state where the seedling planting device 4 is switched to the working posture, the four leveling floats 31 and 32 level the seedling planting site in advance as the machine travels, while the lateral feed mechanism 27 operates. The left and right seedling platforms 33 are reciprocally driven integrally with a constant stroke in the left and right directions, and each time the left and right seedling platforms 33 reach the left and right stroke ends by the operation of the vertical feed mechanism 28, respectively. The mat-like seedlings placed in the vertical direction are fed vertically, and each planting mechanism 30 performs a seedling planting operation for taking out a predetermined amount of seedlings from the lower end of the corresponding seedling stage 33 and planting them in the field, In the state of switching to the retracted position, it is divided into four left seedling planting portions 14 and six right seedling planting portions 14.
[0023]
As shown in FIGS. 1, 2, and 7 to 10, the fertilizer applying device 5 is used for traveling taken out by a power take-off mechanism 37 provided on a transmission shaft 36 extending from the gear type transmission 8 to the rear wheel transmission device 35. Power is transmitted to the five feeding mechanisms 40 placed together with a hopper (an example of a storage unit) 39 at the rear part of the traveling machine body 1 via the one-way clutch 38 and the like, so that each feeding mechanism 40 is removed from the hopper 39. Two fertilizers are fed out, and the fed fertilizer is moved from the discharge port 42 of each feeding mechanism 40 by the operation of the electric blower 41 to the lateral vicinity of each planting mechanism 30 in each leveling float 31, 32. The fertilizer is applied to the vicinity of the lateral side of the seedling planted by each planting mechanism 30 by being pumped through each guide hose (an example of a guide tube) 44 extending over each grooving device 43 provided in the plant. It is.
[0024]
Each guide hose 44 is separable between the traveling machine body 1 and the seedling planting device 4 into an upper side pipe part 45 connected to the feeding mechanism 40 and a lower side pipe part 46 connected to the groove forming device 43. The separation-side end portion 47 of the upper-side pipe portion 45 and the separation-side end portion 48 of the lower-side pipe portion 46 are attached and detached in conjunction with the posture switching of the seedling planting device 4. .
[0025]
As shown in FIGS. 1 to 3, 5, 6, and 8 to 13, a swing arm 50 is supported at both left and right ends of the fixed frame 16 so as to be swingable back and forth via a left and right support shaft 49. The upper end portion of each of the four guide hoses 44 corresponding to the left and right guide hoses 44 of the ten guide hoses 44 is connected to the separation-side end portion 47 of the upper side pipe portion 45 with a rubber boot 51. The upper side support member 52 made of sheet metal is supported by welding. In addition, a pair of left and right sheet metal upper side support members 53 are erected at the left and right center of the fixed frame 16, and the upper end portion thereof corresponds to one of the two guide hoses 44 located at the left and right center. A separation-side end portion 47 of the upper-side tube portion 45 in the guiding hose 44 is supported via a rubber boot 51.
[0026]
On the other hand, at the upper end portion of the support frame 34 in each of the left and right seedling planting portions 14, the separation side end portions of the lower side pipe portions 46 of the corresponding four left and right guide hoses 44 out of the ten guide hoses 44. The lower side support member 55 made of sheet metal that supports the rubber 48 via the rubber boot 54 and the separation side of the lower side pipe portion 46 in the corresponding guide hose 44 out of the two guide hoses 44 located at the left and right center. A sheet metal lower side support member 56 that supports the end portion 48 via a rubber boot 54 is welded.
[0027]
The left and right upper support members 52 on the fixed frame 16 side are provided with right and left locking pins 57, and the lower support members 55 provided on the left and right support frames 34 have rear constricted recesses. The formed engagement piece 58 is erected (see FIG. 3). Further, the boot 54 attached to the lower side pipe portion 46 has an upper portion formed in a bellows shape, and a ring-shaped magnet 59 is attached to the upper end portion thereof (see FIG. 13).
[0028]
At the proximal end of each of the left and right swing arms 50, the upper side pipe portion 45 of the corresponding four left and right guide hoses 44 is interlocked with the posture switching operation from the working posture of the seedling planting device 4 to the retracted posture. The separation-side end portion 47 and the upper-side support member 52 are displaced to the traveling machine body 1 side to be separated from the separation-side end portion 48 and the lower-side support member 55 of the corresponding lower-side pipe portion 46, and seedling planting In conjunction with the posture switching operation from the retracted posture of the attaching device 4 to the working posture, the separation-side end portion 47 and the upper-side support member 52 of the upper-side pipe portion 45 in the corresponding four left and right guide hoses 44 are planted. Displacement to the attachment device 4 side, the separation side end 47 of each upper side pipe part 45 is connected to the separation side end part 48 of the corresponding lower side pipe part 46, and the upper side support member 52 corresponds to the corresponding lower side. The side support members 55 are brought close to each other and their corresponding locking pins The interlocking mechanism 60 is equipped to engage the 57 and the engagement piece 58.
[0029]
Each interlocking mechanism 60 is provided with a balance arm 62 mounted on the fixed frame 16 so as to be swingable around a vertically supporting shaft 61, and one end of the balance arm 62 is biased to swing toward the corresponding swing frame 18 side. The biasing spring 63, the stopper 64 that restricts the swinging of the balance arm 62 by the biasing of the biasing spring 63 by contact with the fixed frame 16, and the base of the swinging arm 50 corresponding to the other end of the balance arm 62. When the seedling planting device 4 is switched from the working position to the retracted position, the left and right swing frames 18 swing rearward. Accordingly, the left and right balance arms 62 follow and swing by the biasing of the biasing spring 63, and the left and right swinging arms 50 are pushed out to the traveling machine body 1 via the linkage spring 65, thereby corresponding left and right four arms. Book When the separation side end 47 and the upper support member 52 of the upper pipe 45 in the guide hose 44 are displaced to the traveling machine body 1 side, and the seedling planting device 4 is switched from the retracted position to the working position. As the left and right swing frames 18 swing forward, the left and right balance arms 62 are pushed out by the swing frame 18 corresponding to the direction against the bias of the bias spring 63 and linked. By pulling the left and right swing arms 50 to the seedling planting device 4 side through the spring 65, the separation side end 47 of the upper side pipe portion 45 and the upper side support member 52 in the corresponding four left and right guide hoses 44. Are displaced to the seedling planting device 4 side.
[0030]
From the above configuration, when the seedling planting device 4 is switched from the working posture to the retracted posture, the left and right swing frames 18 swing back and the left and right main frames 15 correspond to the operation. By swinging in the direction opposite to the swing direction of the swing frame 18, the separation-side end portions 48 of the lower side pipe portions 46 in the two guide hoses 44 positioned at the left and right center of the seedling planting device 4, and The left end of the lower support member 55 on the right side that supports the position is greatly displaced in a direction away from the separation end 47 and the upper support member 53 of the corresponding upper tube 45 as the posture switching starts. In conjunction with the operation, the left and right interlocking mechanisms 60 are connected to the separation-side end portions 47 of the upper-side pipe portions 45 in the corresponding four left and right guide hoses 44, and the left and right supporting mechanisms. Good side branch By displacing the member 52 toward the traveling machine body 1, the separation-side end 47 and the support plate 52 of the upper-side pipe part 45 are separated from the corresponding lower-side pipe part 46 immediately after the posture switching starts. Since it is relatively far away from the side end 48 and the lower support member 55, it is displaced together with the right and left seedling planting portions 14 when the seedling planting device 4 is switched from the working position to the retracted position. The possibility that the separation-side end portion 48 and the lower-side support members 55 and 56 of the lower-side tube portion 46 contact the separation-side end portion 47 and the upper-side support members 52 and 53 of the upper-side tube portion 45 inappropriately is avoided. It can be done.
[0031]
Further, when the seedling planting device 4 is switched from the retracted position to the working position, the operation causes the left and right swing frames 18 to swing forward, and the left and right main frames 15 correspond to the corresponding swing frames. By swinging in a direction opposite to the swinging direction of 18, the separation side end portions 48 of the lower side pipe portions 46 in the two guide hoses 44 located at the center of the left and right of the seedling planting device 4 are supported. The left end portion of the lower hand support member 55 on the right side is greatly displaced toward the separation end portion 47 and the upper support member 53 of the corresponding upper tube portion 45 just before the end of the posture switching. Further, in conjunction with the operation, the left and right interlocking mechanisms 60 include the separation-side end portions 47 of the upper-side pipe portions 45 in the corresponding left and right four guide hoses 44 and the left and right upper-side support members that support them. 52 and seedlings By displacing toward the device 4 side, the separation-side end portion 47 and the support plate 52 of the upper-side tube portion 45 can be separated at the separation-side end portion 48 of the corresponding lower-side tube portion 46 even just before the end of the posture switching. And the lower-side support member 55, the lower-side pipe that is displaced together with the right and left seedling planting portions 14 when the seedling planting device 4 is switched from the storage position to the working position. It is possible to avoid the possibility that the separation-side end portion 48 and the lower-side support members 55 and 56 of the portion 46 are inappropriately brought into contact with the separation-side end portion 47 and the upper-side support members 52 and 53 of the upper-side pipe portion 45. ing.
[0032]
In addition, the direction in which the interlocking mechanism 60 displaces the separation-side end portion 47 of the upper-side tube portion 45 in conjunction with the posture switching operation from the working posture to the retracted posture of the seedling planting device 4 is the separation of the lower-side tube portion 46. Since the separation direction is with respect to the side end portion 48, the separation side end portion 47 of the upper side tube portion 45 can be separated smoothly and quickly from the separation side end portion 48 of the lower side tube portion 46. The direction in which the interlocking mechanism 60 displaces the separation-side end 47 of the upper-side pipe portion 45 in conjunction with the posture switching operation from the retracted position of the attachment device 4 to the working posture is the separation-side end 48 of the lower-side pipe 46. Therefore, the separation-side end portion 47 of the upper-side tube portion 45 can be smoothly and quickly connected to the separation-side end portion 48 of the lower-side tube portion 46.
[0033]
Further, the upper part of the boot 54 to be attached to the lower side pipe portion 46 is formed in a bellows shape, a ring-shaped magnet 59 is attached to the upper end portion thereof, and the left and right upper side support members 52 are connected to the left and right sides. Since the locking pin 57 is provided, and the engaging piece 58 that engages with the corresponding locking pin 57 is erected on the left and right lower support members 55, the separation side end 47 and the lower side of the upper pipe portion 45 are provided. When the separation side end portion 48 of the tube portion 46 is separated, the upper portion of the boot 54 is sufficiently stretched in the separation direction by the attracting action of the magnet 59 with respect to the upper support members 52 and 53, and then the upper side tube. The separation-side end portion 47 of the portion 45 and the separation-side end portion 48 of the lower-side tube portion 46 are separated from each other, whereby the separation-side end portion 47 of the upper-side tube portion 45 and the lower-side tube portion 46 are separated. When the separation side end 48 is connected, the upper part of the boot 54 is the upper side pipe part. 5 so that the separation side end 47 of the upper side pipe part 45 and the separation side end part 48 of the lower side pipe part 46 can be connected more smoothly. In addition, when the separation side end 47 of the upper side pipe part 45 and the separation side end part 48 of the lower side pipe part 46 are connected, the magnet 59 of the boot 54 is separated from the separation side end of the upper side pipe part 45. After being externally fitted to the end portion 47, the upper side support members 52, 53 are attracted to each other, and then the upper side support members 52, 53 and the lower side support member 55 approach each other while compressing the upper part of the boot 54. Since the locking pin 57 and the engagement piece 58 are engaged, the upper side support is provided in a state where the separation side end 47 of the upper side pipe part 45 and the separation side end 48 of the lower side pipe part 46 are connected. The members 52 and 53 and the lower support member 55 are mutually connected with the upper portion of the boot 54 sandwiched therebetween. The vertical displacement of the upper side pipe part 45 is prevented, and the connection between the separation side end part 47 of the upper side pipe part 45 and the separation side end part 48 of the lower side pipe part 46 can be strengthened. It is now possible to reliably prevent the intrusion of rainwater, etc.
[0034]
2, 3, 11, and 12 is a stopper that restricts the forward swing of the swing arm 50 by contacting the swing arm 50.
[0035]
[Another embodiment]
Hereinafter, other embodiments of the present invention will be listed.
[1] The riding type rice transplanter may be configured for 8-row planting or 12-row planting.
[2] The seedling planting device 4 may be configured to be divided into left and right with the same number of strips.
[3] The supply device 5 may be a chemical spraying device, direct seeding, or a fertilizer application device that supplies paste-like fertilizer.
[Brief description of the drawings]
Fig. 1 Overall side view of a riding type rice transplanter
[Fig. 2] Side view of seedling planting device
FIG. 3 is a front view of the main part of the seedling planting apparatus.
FIG. 4 is a plan view of a main part showing a transmission configuration of a seedling planting apparatus.
FIG. 5 is a plan view showing a working posture of the seedling planting apparatus.
FIG. 6 is a plan view showing the retracted posture of the seedling planting device.
FIG. 7 is a rear view of the fertilizer application apparatus.
FIG. 8 is a schematic plan view showing the state of each guide hose when the seedling planting device is switched to a working posture.
FIG. 9 is a schematic plan view showing the state of each guide hose during the posture switching of the seedling planting device.
FIG. 10 is a schematic plan view showing the state of each guide hose when the seedling planting device is switched to the retracted position.
11A is a cross-sectional plan view of the main part showing the state of the interlocking mechanism when the seedling planting apparatus is switched to the working posture. FIG.
(B) Cross-sectional plan view of the main part showing the state of the interlocking mechanism with the seedling planting device displaced from the working posture
FIG. 12 is a longitudinal side view of the main part showing the configuration of the interlocking mechanism.
FIG. 13 (A) Longitudinal side view of the main part showing the connection state of the guide hose
(B) Vertical side view of the main part showing the separated state of the guide hose
[Explanation of symbols]
1 Airframe
4 Seedling planting equipment
5 Supply device
14 Seedling planting department
39 Reservoir
44 Guide tube
45 Upper side pipe
46 Lower side pipe
47 Separation end
48 Separation end
60 interlocking mechanism

Claims

A storage posture in which the seedling planting device connected to the rear part of the traveling machine body is separated into left and right seedling planting parts and their orientations are changed to the left and right directions, and the left and right seedling planting parts are changed forward and connected. Supply to supply to the field via a plurality of guide pipes extending from the storage part to the left and right seedling planting parts. A riding type rice transplanter equipped with a device,
Each of the guide tubes is configured to be separable into an upper side pipe part and a lower side pipe part between the traveling machine body and the seedling planting device, and the seedling planting is performed on the left and right seedling planting parts. In conjunction with the posture switching operation from the working posture to the retracted posture of the apparatus, the separation-side end portion of the upper-side pipe portion is displaced toward the traveling machine body to be separated from the separation-side end portion of the lower-side pipe portion. In addition, in conjunction with the posture switching operation from the retracted posture of the seedling planting device to the working posture, the separation side end of the upper side pipe portion is displaced toward the seedling planting device side to move the lower hand Riding type rice transplanter provided with an interlocking mechanism that connects to the separation side end of the side pipe.

The seedling planting device is configured such that the left and right seedling planting portions face each other in the retracted posture, and the interlocking mechanism is interlocked with a posture switching operation of the seedling planting device, and the seedling planting device The riding type rice transplanter according to claim 1, wherein the guide pipes arranged on the left and right outer parts other than the guide pipe arranged at the left and right central part are displaced.