JP3880023B2

JP3880023B2 - Normal combine

Info

Publication number: JP3880023B2
Application number: JP09690398A
Authority: JP
Inventors: 村正美中; 田修平平; 畑俊紀桐; 瀬知義広; 野潤一正
Original assignee: Yanma Agricultural Equipment Co Ltd
Current assignee: Yanma Agricultural Equipment Co Ltd
Priority date: 1998-03-24
Filing date: 1998-03-24
Publication date: 2007-02-14
Anticipated expiration: 2018-03-24
Also published as: JPH11266606A

Description

【０００１】
【発明の属する技術分野】
刈取部で刈取った稲、麦、豆類など穀物をフィーダハウスを介し脱穀部に全量投入して脱穀処理する普通形コンバインに関する。
【０００２】
【発明が解決しようとする課題】
従来、走行用と旋回用の２つの油圧式無段変速機構を備えた構造にあって、走行用の無段変速出力と旋回用の無段変速出力とを差動機構を構成する遊星ギヤ機構に入力させて、旋回用の無段変速出力に応じて左右走行クローラの駆動速度を相対的に無段階に変化させて機体の旋回を行う操向手段にあっては、前進時と後進時とにおける操向ハンドルの操作方向と機体の旋回方向とを一致させる操向ハンドルと走行変速レバーとの操作連動機構は、極めて構造的にも複雑で機体内に簡単に組込みが行えないばかりでなく、その調整や保守点検作業なども容易に行えないという不都合があった。
【０００７】
【課題を解決するための手段】
したがって本発明は、走行用油圧式無段変速機構と旋回用油圧式無段変速機構とを備え、旋回用の無段変速出力でもって左右の走行クローラの駆動速度を相対的に変化させて機体を旋回する普通形コンバインにおいて、走行用油圧式無段変速機構を動作させる走行変速操作部材と、旋回用の無段変速機構を動作させる旋回操作部材とを連動連結させる走行及び旋回操作連動機構を備え、運転席を有する運転台の下側に連動機構を配備させて、運転台の下側の余剰スペースにコンパクトに連動機構と組込んで、機体構成の簡素化と連動機構の損傷などの発生のない良好な保持を図るものである。
【０００８】
また、走行及び旋回連動機構を運転台下面に沿わせて略平面状に配設して、連動機構を運転台下面に平坦状に組込んで、機体構成の一層の簡素化と運転台下側での連動機構の良好な保持を図るものである。
【０００９】
さらに、運転台下面の略中央に旋回操作部材の旋回操作系を、また運転台下面の左右両側に走行変速操作部材の走行操作系と、これら走行及び旋回操作出力の連動操作系とをそれぞれ配置させて、走行出力操作系を中心として運転台下面の左右両側に旋回及び連動操作系をバランス良くコンパクトに組込み可能とさせるものである。
【００１０】
またさらに、旋回操作量に応じ走行速度を減速させる減速操作系を、旋回操作系と走行及び旋回連動操作系間に設けて、運転台下面に減速操作系をコンパクトに組込んで、機体の安定且つ良好な旋回を可能とさせるものである。
【００１１】
また、運転台と一体に走行及び旋回操作連動機構を上下方向に回動自在に設けて、走行及び旋回連動機構を運転台と一体に上方に回動して外部に開放させて、連動機構の調整や保守点検などを容易とさせて、操作精度の安定維持を図るものである。
【００１２】
さらに、機体後部の走行及び旋回用油圧式無段変速機構と、運転台下側の走行及び旋回操作連動機構とをワイヤを介し連動連結させて、例えばリンクなどで連結する従来手段に比べ、設置位置の制約を受けることなく自由度に秀れると共に、構造コンパクトにして正確且つ確実な操作を可能とさせるものである。
【００１８】
【発明の実施の形態】
以下、本発明の実施例を図面に基づいて詳述する。図１はコンバインの全体側面図、図２は同平面図であり、図中（１）は走行クローラ（２）をトラックフレーム（３）に装備する機台、（４）は機体の進行方向に対し軸芯を直交させる大径及び小径２つのスクリュ形第１及び第２扱胴（５）（６）や選別部である揺動選別盤（７）などを備える脱穀部、（８）は脱穀部（４）の後部上方に配備して揚穀筒（９）を介して取出す脱穀部（４）の穀粒を貯留する穀物タンク、（１０）は穀物タンク（８）内の穀粒を取出す上部搬出オーガ、（１１）は穀物タンク（８）の後方に配備してエンジン（１２）を内設するエンジンルーム、（１３）は運転席（１４）及び旋回操作部材である操向ハンドル（１５）などを運転台（１６）に備えて脱穀部（４）の前部上方に配設する運転操作部、（１７）は運転台（１６）の左右両側に配備する左右の作業者乗降用ステップ、（１８）は脱穀部（４）の下部前方に油圧昇降シリンダ（１９）を介し昇降可能に装備する刈取部である。
【００１９】
そして、前記刈取部（１８）は、未刈り穀稈を取入れる穀物刈取ヘッダー（２０）と、該ヘッダー（２０）の後部略中央に連結させて刈取穀稈を脱穀部（４）に送給するフィーダハウス（２１）によって構成すると共に、未刈り穀稈掻込み用リール（２２）と、往復駆動型刈刃（２３）と、穀稈掻込オーが（２４）とを前記穀物ヘッダー（２０）に備え、前記フィーダハウス（２１）を運転台（１６）の下方で運転台（１６）中央の運転席（１４）より左側に偏位して配設させ、前記ヘッダー（２０）に取込まれる刈取穀稈をフィーダハウス（２１）に内設する供給チェンコンベア（２５）を介し脱穀部（４）の左側に送り込んで脱穀処理するように構成している。
【００２０】
また、図４に示す如く、前記走行クローラ（２）を駆動するミッションケース（２６）は、１対の油圧変速ポンプ（２７）及び油圧変速モータ（２８）からなる走行用の油圧式無段変速機構（２９）と、１対の油圧操向ポンプ（３０）及び油圧操向モータ（３１）からなる旋回用の油圧式無段変速機構（３２）とを備え、前記エンジン（１２）の出力軸（１２ａ）の駆動力を変速及び操向ポンプ（２７）（３０）の入力軸（３３）に伝達ベルト（３４）を介して連動連結させて、各ポンプ（２７）（３０）を駆動するように構成している。
【００２１】
そして、前記変速モータ（２８）の出力軸（３５）に、副変速機構（３６）及び強制差動機構（３７）を介し、左右走行クローラ（２）（２）の駆動輪（３８）（３８）を連動連結させるもので、前記差動機構（３７）は左右対称の１対の遊星ギヤ機構（３９）（３９）を有し、該遊星ギヤ機構（３９）は１つのサンギヤ（４０）と、該サンギヤ（４０）の外周で噛合う３つのプラネタリギヤ（４１）…と、各プラネタリギヤ（４１）…に噛合うリングギヤ（４２）などで形成している。
【００２２】
さらに、前記各プラネタリギヤ（４１）…は、サンギヤ軸（４３）と同軸線上とのキャリヤ軸（４４）のキャリヤ（４５）にそれぞれ回転自在に軸支させ、左右のサンギヤ（４０）（４０）を挾んで左右のキャリヤ（４５）を対向配置させると共に、前記リングギヤ（４２）は、各プラネタリギヤ（４１）に噛み合う内歯（４２ａ）を有し、サンギヤ軸（４３）と同一軸芯上のキャリヤ軸（４４）に回転自在に支持させている。
【００２３】
またさらに、走行用の油圧式無段変速機構（２９）は、変速ポンプ（２７）の回転斜板の角度変更調節により変速モータ（２８）の正逆回転と回転数の制御を行うもので、変速モータ（２８）の回転出力を出力軸（３５）の伝達ギヤ（４６）から、各ギヤ（４７）（４８）（４９）及び副変速機構（３６）を介し、サンギヤ軸（４３）に固定したセンタギヤ（５０）に伝達してサンギヤ（４０）を回転するように構成している。前記副変速機構（３６）は、前記ギヤ（４９）を有する副変速軸（５１）と、前記センタギヤ（５０）に噛合うギヤ（５２）を有する駐車ブレーキ軸（５３）とを備え、副変速軸（５１）とブレーキ軸（５３）間に、低速用ギヤ（５４）（５２）及び中速用ギヤ（５５）（５６）及び高速用ギヤ（５７）（５８）を設け、中央位置の副変速切換用ギヤ（５５）のスライダ（５５ａ）の摺動操作によって副変速の低速と中速と高速の切換を行うように構成している。なお、低速と中速の間及び中速と高速の間には中立ゾーンを有する。また前記駐車ブレーキ軸（５３）に車速検出ギヤ（５９）と、該ギヤ（５９）の回転数によって車速を検出する車速センサ（６０）を設けると共に、刈取部（１８）に回転力を伝達する刈取ＰＴＯ軸（６１）のＰＴＯ入力ギヤ（６２）に、前記出力軸（３５）の伝達ギヤ（４６）を噛合連結させている。
【００２４】
そして、前記センタギヤ（５０）を介しサンギヤ軸（４３）に伝達された変速モータ（２８）からの駆動力を、左右の遊星ギヤ機構（３９）（３９）を介して左右キャリヤ軸（４４）（４４）に伝達させると共に、各キャリヤ軸（４４）（４４）に伝達された回転出力を左右１対２組の減速ギヤ（６３）（６４）・（６３）（６４）を介して左右の駆動輪（３８）（３８）の車軸（３８ａ）（３８ａ）にそれぞれ伝えるように構成している。
【００２５】
また、旋回用の油圧式無段変速機構（３２）は、操向ポンプ（３０）の回転斜板の角度変更調節により操向モータ（３１）の正逆回転切換と回転数の制御を行うもので、操向モータ（３１）の出力軸（６５）の出力ギヤ（６６）からギヤ伝達機構（６７）を介し最終出力軸である旋回軸（６８）の旋回ギヤ（６９ａ）（６９ｂ）に回転出力を伝達し、右側のリングギヤ（４２）の外歯（４２ｂ）に対して右旋回ギヤ（６９ａ）を噛合させ、また左側のリングギヤ（４２）の外歯（４２ｂ）に逆転軸（７０）の逆転ギヤ（７１）を介して左旋回ギヤ（６９ｂ）を連結させ、操向モータ（３１）の正転時に左右のリングギヤ（４２）（４２）を左右同一回転数で回転させ、かつ左リングギヤ（４２）を正転させ、右リングギヤ（４２）を逆転させるように構成している。
【００２６】
而して、旋回用の操向モータ（３１）の駆動を停止させ、かつ左右リングギヤ（４２）を静止固定させた状態で、走行用の変速モータ（２８）を駆動させると、変速モータ（２８）からの回転出力はセンタギヤ（５０）から左右のサンギヤ（４０）に同一回転数で伝達され、左右遊星ギヤ機構（３９）のプラネタリギヤ（４１）及びキャリヤ（４５）及び減速ギヤ（６３）（６４）を介して左右の車軸（３８ａ）（３８ａ）に左右同一回転方向でかつ同一回転数で伝達され、機体の前後直進走行が行われる。一方、走行用の変速モータ（２８）を停止させ、かつ左右のサンギヤ（４０）（４０）を静止固定させた状態で、旋回用の操向モータ（３１）を正逆回転駆動すると、左側の遊星ギヤ機構（３９）が正或いは逆回転し、また右側の遊星ギヤ機構（３９）が逆或いは正回転し、左右走行クローラ（２）（２）の一方を前進回転させかつもう一方を後進回転させ、機体を左或いは右にその場でスピンターン（心地旋回）させ、圃場枕地での方向転換などを行うように構成している。
【００２７】
また、走行用の変速モータ（２８）を駆動させながら、旋回用の操向モータ（３１）を駆動すると、左右走行クローラ（２）（２）の駆動速度に差が生じて大きな旋回半径の旋回によって走行方向が修正され、また前記旋回半径は左右走行クローラ（２）（２）の速度差に応じて決定されるように構成している。
【００２８】
図５乃至図１３に示す如く、前記走行用の油圧式無段変速機構（２９）に連結する走行変速操作部材である主変速レバー（７２）と、旋回用の油圧式無段変速機構（３２）に連結する操向ハンドル（１５）とを、走行及び旋回操作連動機構（７３）に連動連結させると共に、該連動機構（７３）をプッシュプル形走行変速及び旋回ワイヤ（７４）（７５）介し走行及び旋回用の無段変速機構（２９）（３２）のコントロールレバー（７６）（７７）に連動連結させている。
【００２９】
前記操作連動機構（７３）は操向ハンドル（１５）の旋回操作系（７３ａ）と、主変速レバー（７２）の走行操作系（７３ｂ）と、これら操作系（７３ａ）（７３ｂ）を連結させる連動操作系（７３ｃ）とを備え、前記運転台（１６）の下側に下面（１６ａ）に沿って平面状に操作連動機構（７３）を配設するもので、運転台（１６）の下面（１６ａ）略中央に旋回操作系（７３ａ）を、また下面（１６ａ）の左側に走行操作系（７３ｂ）を、さらに下面（１６ａ）の右側に連動操作系（７３ｃ）をそれぞれ配設して、連動操作系（７３ｃ）からの走行及び操向変速操作出力をワイヤ（７４）（７５）を介し走行及び旋回用無段変速機構（２９）（３２）に伝達するように構成している。
【００３０】
前記連動操作系（７３ｃ）は、運転台（１６）下面（１６ａ）の固定板（７７）に固設するリンク取付体（７８）と、該取付体（７８）の前端に支持する上下方向の第１枢軸（７９）に基端筒軸（８０）を回動自在に取付けて第１枢軸（７９）とは直交させる前後方向の第２枢軸（８１）と、前記第２枢軸（８１）の軸回りにそれぞれ回動自在に基端を連結する旋回及び変速揺動リンク（８２）（８３）と、前記取付体（７８）の後端に支持する上下方向の第３枢軸（８４）に基端を固設する変速アーム（８５）と、第３枢軸（８４）外側の回動筒軸（８６）に基端を固設する旋回アーム（８７）と、前記揺動リンク（８２）（８３）の第２枢軸（８１）とは偏心位置の操作出力部（８２ａ）（８３ａ）の出力軸（８８）（８９）と各アーム（８７）（８５）間を連結する旋回及び変速自在継手軸（９０）（９１）と、前記第３枢軸（８４）の右端に固設する変速出力アーム（９２）と、前記第２枢軸（８１）に固設する略Ｌ形のロッド取付金具（９３）などを備え、前記旋回及び走行操作系（７３ａ）（７３ｂ）からの旋回及び変速ロッド（９４）（９５）を旋回自在継手軸（９０）前端及び取付金具（９３）に連動連結させると共に、前記旋回及び変速出力アーム（８７）（９２）にワイヤ（７５）（７４）を連結させて、前記第１枢軸（７９）を中心とした変速揺動リンク（８３）の前後方向の回動（α１）（α２）によって走行用のコントロールレバー（７６）を、また走行中の第２枢軸（８１）を中心とした旋回揺動リンク（８２）の左右方向の回動（β１）（β２）によって操向用のコントロールレバー（７７）を操作して走行変速及び操向制御を行うように構成している。
【００３１】
前記主変速レバー（７２）は運転席（１４）左前方で運転台（１６）より立設する操作コラム（９６）に設けて該レバー（７２）の上端部を運転席（１４）側に屈曲させて近接させたもので、上端の握り部（７２ａ）に刈取昇降スイッチ（９７）などを有し、操作コラム（９６）の上部内側に枢軸（９８）及びレバー板（９９）及び筒軸（１００）を介し前記レバー（７２）の基端を前後及び左右方向に回動自在に取り付けけると共に、前記コラム（９６）下部の中間軸（１０１）に支持する筒軸（１０２）の第１揺動アーム（１０３）に、上下方向のロッド（１０４）を介しレバー板（９９）を連結させると共に、筒軸（１０２）の第２揺動アーム（１０５）に前記ロッド（９５）を介し取付金具（９３）を連動連結して、運転台（１６）左側位置で操作される主変速レバー（７２）の枢軸（９８）を中心とした前後方向の回動操作出力を変速出力として運転台（１６）左側位置の連動操作系（７３ｃ）に伝達するように構成している。なお（１０６）は前記レバー（７２）を右方向に付勢する板バネ、（１０７）は前記レバー（７２）の右移動位置を規制するストッパボルトである。
【００３２】
一方、前記旋回操作系（７３ａ）は、操向ハンドル（１５）下端の旋回操作軸（１０８）にギヤ（１０９）を設け、この後方の回転軸（１１０）に取付けるセクタギヤ（１１１）に前記ギヤ（１０９）を噛合せると共に、前記セクタギヤ（１１１）に一体連結する出力アーム（１１２）を旋回ロッド（９４）を介し旋回自在継手軸（９０）前端に連結させて、操向ハンドル（１５）の回動操作出力を旋回出力として連動操作系（７３ｃ）に伝達して、前記第２枢軸（８１）を中心として旋回揺動リンク（８２）を回動するように構成している。
【００３３】
また、前記旋回操作軸（１０８）のギヤ（１０９）下方に中立位置決め板（１１３）を設け、該位置決め板（１１３）下面の突出軸（１１４）に操向検出リンク（１１５）の一端を連結させ、旋回及び連動操作系（７３ａ）（７３ｃ）間に配設する減速操作系である減速アーム軸（１１６）の第１揺動アーム（１１７）と前記検出リンク（１１５）他端とを軸（１１８）を介し連結させると共に、減速アーム軸（１１６）の第２揺動アーム（１１９）と前記変速揺動リンク（８３）とを自在継手形減速ロッド（１２０）を介し連結させて、走行状態で前記ハンドル（１５）の操向操作量を大きくする程減速ロッド（１２０）を左方向に引張り、操向操作量に比例させて走行速度を減速させるように構成している。
【００３４】
なお、（１２１）は中立検出リンク（１２２）などを介し前記位置決め板（１１３）の中立位置を検出する旋回中立センサである。
【００３５】
而して図１４に示す如く、前記自在継手軸（９０）（９１）の旋回及び変速アーム（８７）（８５）との継手部（９０ａ）（９１ａ）を、前記第２枢軸（８１）の前後延長水平ライン（Ｌ１）上に略一致させる状態に配置させ、前記自在継手軸（９０）（９１）の出力軸（８８）（８９）との継手部（９０ｂ）（９１ｂ）及び減速ロッド（１２０）の揺動リンク（８３）との継手部（１２０ａ）を、前記水平ライン（Ｌ１）に直交させる第１枢軸（７９）の上下垂直延長ライン（Ｌ２）上に位置させ、操向ハンドル（１５）及び主変速レバー（７２）を中立位置に保持しているとき、前記ハンドル（１５）或いはレバー（７２）の何れか一方の操作で揺動リンク（８２）（８３）が揺動されても、該リンク（８２）（８３）を第２及び第１枢軸（８１）（７９）回りに回動させるだけで、継手軸（９０）（９１）には旋回及び変速操作出力が伝わらないように構成している。
【００３６】
図１２乃至図１３に示す如く、前記変速及び旋回ワイヤ（７４）（７５）は、脱穀部（４）後側のミッションケース（２６）左位置の脱穀左側板（４ａ）外側に固設するワイヤ受け（１２３）に他端側を臨ませ、ミッションケース（２６）上方で左右方向に横架する二重軸構造の外軸（１２４）及び内軸（１２５）の左端に揺動アーム（１２６）（１２７）を介して各ワイヤ（７４）（７５）の他端を連結すると共に、外軸（１２４）及び内軸（１２５）の右端側の固定アーム（１２８）（１２９）をロッド（１３０）（１３１）を介して走行及び旋回用の無段変速機構（２９）（３２）のコントロールレバー（７６）（７７）に連動連結させて、主変速レバー（７２）及び操向ハンドル（１５）による走行速度の変速や機体の旋回を行うように構成している。
【００３７】
ところで図１５に示す如く、前記運転台（１６）は中央部可動台（１６Ａ）とこの周囲の固定枠台（１６Ｂ）とに分割形成され、前記可動台（１６Ａ）の上面に運転操作部（１３）を、また下面に連動機構（７３）を装備させると共に、可動台（１６Ａ）の前端側を回動支点軸（１３２）を介して固定枠台（１６Ｂ）に上下動自在に支持させて、支点軸（１３２）を中心として可動台（１６Ａ）の後端側を上方に回動させるとき、可動台（１６Ａ）下面の連動機構（７３）を開放状態とさせて、連動機構（７３）の調整や保守点検作業など容易とさせるように構成している。
【００３８】
そして、図１１、図１４に示す如く、主変速レバー（７２）を前後進操作し、第１枢軸（７９）を中心として揺動リンク（８３）を前後に角度（α１）（α２）傾けるとき、前記継手軸（９１）を引張り或いは押して変速アーム（８５）を軸（８４）中心として回動させ、走行速度の変速や前後進切換を行うと共に、図９に示す如く主変速レバー（７２）が中立以外の位置に操作されている状態で、操向ハンドル（１５）を回動操作し、第２枢軸（８１）を中心として揺動リンク（８２）を左右に角度（β１）（β２）傾けるとき、継手軸（９０）を引張り或いは押して旋回アーム（８７）を軸（８４）を中心として回動させ、機体を左及び右旋回させる操向動作を行わせるもので、主変速レバー（７２）の中立時に旋回操作を行っても、継手部（９０ａ）を支点として継手軸（９０）はライン（Ｌ１）を中心とした円錐面上で回転移動し、ライン（Ｌ１）（Ｌ２）の交点を中心とする同一円周上を継手部（９０ｂ）が移動し、旋回出力軸（８８）と旋回アーム（８７）間の距離が略一定に保たれ、したがって旋回アーム（８７）は動作しない。そして主変速レバー（７２）が中立位置以外のときにハンドル（１９）の旋回操作が行われると、旋回アーム（８７）は動作するもので、前後進に切換わるとき旋回アーム（８７）は前後逆方向に動作し、操向モータ（３１）を前進時と後進時では逆方向に回転させるように構成したものである。
【００３９】
例えば、走行用の変速モータ（２８）の正回転時を前進時とすると、逆回転時の後進時には旋回用の操向モータ（３１）による遊星ギヤ機構（３９）の作用は前進時と後進時では逆となるもので、前進時と後進時のハンドル（１５）操作による機体の旋回方向を一致させるため、変速モータ（２８）の逆回転（後進）時には操向ポンプ（３０）の斜板角度を逆方向に切換え、操向モータ（３１）を前進時と後進時では逆方向に回転させるように構成している。
【００４０】
また、前進操作時の揺動リンク（８３）が中立より前方の角度（α１）側に傾き、ハンドル（１５）の右回動操作によって旋回ロッド（９４）を右方向に押して揺動リンク（８２）を右方向の角度（β１）側に傾けることにより、揺動リンク（８２）の出力部（８２ａ）を旋回アーム（８７）側より遠ざけ、第３枢軸（８４）を中心として旋回用継手軸（９１）との継手部（９１ａ）を揺動リンク（８２）側に近づける方向（図７中時計方向）に旋回アーム（８７）を揺動させ、前記旋回ワイヤ（７５）などを介しコントロールレバー（７７）を下方向に回動させ、旋回用の操向モータ（３１）を正回転させる。即ち、機体を前進で右旋回（走行クローラ（２）の速度を左側が大、右側が小）させるように構成している。
【００４１】
さらに、主変速レバー（７２）を前方に倒す前進操作時、ハンドル（１５）の左回動操作によって旋回ロッド（９４）を引張って、揺動リンク（８２）を左方向の角度（β２）側に傾けることにより、揺動リンク（８２）の出力部（８２ａ）を旋回アーム（８７）側に近づけ、第３枢軸（８４）を中心として旋回用継手軸（９１）との継手部（９１ａ）を揺動リンク（８２）側より遠ざける方向（図７中反時計方向）に旋回アーム（８７）を揺動させ、前記コントロールレバー（７７）を上方向に回動させ、前記操向モータ（３１）を逆回転させる。即ち、機体を前進で左旋回（走行クローラ（２）の速度を右側が大、左側が小）させるように構成している。
【００４２】
さらに、主変速レバー（７２）を後方に倒す後進操作によって揺動リンク（８３）が中立より後方の角度（α２）側に傾き、ハンドル（１５）の右回動操作によって旋回ロッド（９４）を右方向に押して揺動リンク（８２）を右方向の角度（β１）側に傾けることにより、揺動リンク（８２）の出力部（８２ａ）を旋回アーム（８７）側に近づけ、第３枢軸（８４）を中心として旋回用継手軸（９１）との継手部（９１ａ）を揺動リンク（８２）を遠ざける方向（図７中反時計方向）に旋回アーム（８７）を揺動させ、前記コントロールレバー（７７）を上方向に回動させ、前記操向モータ（３１）を逆回転させる。即ち、機体を後進で右旋回（走行クローラ（２）の速度を左側が大、右側が小）させるように構成している。
【００４３】
また、主変速レバー（７２）後進操作時で、ハンドル（１９）の左回動操作によって、揺動リンク（８２）を左方向の角度（β２）側に傾けることにより、揺動リンク（８２）の出力部（８２ａ）を旋回アーム（８７）より遠ざけ、第３枢軸（８４）を中心として旋回用継手軸（９１）との継手部（９１ａ）を揺動リンク（８２）を揺動リンク（８２）側に近づける方向（図７中時計方向）に回動させ、前記コントロールレバー（７７）を下方向に回動させ、前記操向モータ（３１）を正回転させる。即ち、機体を後進で左旋回（走行クローラ（２）の速度を右側が大、左側が小）させるように構成している。
【００４４】
このように前進及び後進時の旋回操作において、旋回アーム（８７）を逆方向に回転させ、前後進の何れにおいても操向ハンドル（１５）の回動操作方向と機体の旋回方向とを一致させるように構成している。
【００４５】
ところで図１６乃至図１９に示す如く、前記脱穀部（４）は第１扱胴（５）の後方に同一軸芯高さで第２扱胴（６）を配設し、これら第１及び第２扱胴（５）（６）をフィーダハウス（２１）からの穀稈投入方向に対し直交させ、フィーダハウス（２１）からの第１扱胴（５）の左側に投入された穀稈を第１扱胴（５）で右方向に横送りして、第１扱胴（５）の右端連通樋（１３３）では排稈羽根（１３４）によって後方の第２扱胴（６）に受継いで左方向に横送りして、左端の排稈口（１３５）では排稈羽根（１３６）によって後方に排稈を排出させるように構成している。
【００４６】
また、前記第１及び第２扱胴（５）（６）下方に前記揺動選別盤（７）を配設し、揺動選別盤（７）の下方に唐箕（１３７）や１番及び２番コンベア（１３８）（１３９）などを配設すると共に、選別盤（７）後方に排稈口である三番口（１４０）を開設している。
【００４７】
そして脱穀部（４）を構成する左右脱穀側板（４ａ）（４ｂ）を支持部材として、脱穀部（４）の後側上方に穀物タンク（８）を、またタンク（８）後方にエンジンルーム（１１）を一体形成し、穀物タンク（８）の底板（１４１）と、エンジンルーム（１１）の底板（１４２）とを脱穀部（４）の後部天板として用いるように構成している。
【００４８】
また、第１扱胴（５）上部の第１扱胴カバー（１４３）を後支点軸（１４４）を中心として上方に開放自在に設けると共に、第２扱胴（６）上部の第２扱胴カバー（１４５）を取外し自在に設け、左脱穀側板（４ａ）外側に前記揚穀筒（９）や、二番コンベア（１３９）からの二番物を揺動選別盤（７）に還元する二番還元筒（１４６）や、第１及び第２扱胴（５）（６）などを駆動するエンジン駆動系（１４７）を配設している。さらに、穀物タンク（８）内の底部排出オーガ（１４８）によってタンク（８）右外側に取出された穀粒を上部排出オーガ（１０）に受継ぐ縦排出オーガ（１４９）や、一番及び二番コンベア（１３８）（１３９）の駆動系（１５０）を右脱穀側板（４ｂ）外側に配設し、左右脱穀側板（４ａ）（４ｂ）外側を左右脱穀側部カバー（１５１）（１５２）・（１５３）（１５４）で覆うように構成している。
【００４９】
左右脱穀側部カバー（１５１）（１５２）・（１５３）（１５４）は、上カバー（１５１）（１５３）と下カバー（１５２）（１５４）とに２分割され、左右の下カバー（１５２）（１５４）を取外し自在に設けると共に、左右の上カバー（１５１）（１５３）を上支点軸（１５５）（１５６）を中心として上方に開放自在に設けて、各駆動系（１４７）（１５０）の保守点検などを容易に可能とさせるように構成している。
【００５０】
図１７、図２０、図２１に示す如く、前記エンジン（１２）の冷却ファン（１５７）を臨ませるエンジンルーム（１１）の左開口部にラジエータ（１５８）を配設し、該ラジエータ（１５８）外側をラジエータカバー（１５９）で覆うもので、ラジエータカバー（１５９）はオイルクーラ（１６０）を内側面に取付け、該カバー（１５９）後端の後支点軸（１６１）を中心として右外側にカバー（１５９）を開放自在に設けている。
【００５１】
また、前記エンジン（１２）より下側の右脱穀側板（４ｂ）外側にエンジン（１２）の燃料タンク（１６２）を配設すると共に、前記縦排出オーガ（１４９）より前方の穀物タンク（８）の右外側面に、前記無段変速機構（２９）（３２）などに作動油を供給する作動油タンク（１６３）を配設して、脱穀部（４）や穀物タンク（８）やエンジン（１２）に悪影響を与えることのないこれらタンク（１６２）（１６３）の簡潔な配備を行うように構成している。なお（１６４）はエアクリーナ、（１６５）は排気管である。
【００５２】
さらに、前記エンジンフレーム（１１）後方の脱穀後部カバー（１６６）を、左側の左支点軸（１６７）を中心として後方に開放自在に設けて、エンジン（１２）の保守点検などを容易に可能とさせるように構成している。
【００５３】
またさらに、脱穀部（４）後側のミッションケース（２６）より後方に後部ガードフレーム（１６８）を設けるもので、門形状のガードフレーム（１６８）の中間部をミッションケース（２６）後方に下傾斜状に臨ませると共に、ガードフレーム（１６８）の左右基端を左右側板（４ａ）（４ｂ）に固設して、機体後進時に圃場に障害物がある場合などにミッションケース（３）や揺動選別盤（７）や三番口（１４０）を障害物から保護するように構成している。そして前記変速及び旋回ワイヤ（７４）（７５）と外軸（１２４）及び内軸（１２５）の揺動アーム（１２６）（１２７）との連結及び連結解除操作や調整操作を脱穀左側板（４ａ）外側より容易に可能とさせると共に、各ロッド（１３０）（１３１）とコントロールレバー（７６）（７７）の連結及び連結解除操作や調整操作を機体後側より手を差し入れて容易に可能とさせるように構成している。
【００５４】
一方、図１７、図２１にも示す如く、前記フィーダハウス（２１）の右側で運転台（１６）のステップ（１６ａ）内側に、バッテリ（１６９）や、前記油圧昇降シリンダ（１９）及び水平制御用シリンダの切換操作弁など油圧装置（１７０）を集中配備させて、フィーダハウス（２１）右側とステップ（１６ａ）下側間に形成される余剰スペース（１７１）にバッテリ（１６９）及び油圧装置（１７０）をコンパクト且つ良好に格納保持すると共に、保守点検なども容易とさせて、これらの性能の安定維持を図るように構成している。
【００５５】
【発明の効果】
以上実施例から明らかなように本発明は、走行用油圧式無段変速機構（２９）と旋回用油圧式無段変速機構（３２）とを備え、旋回用の無段変速出力でもって左右の走行クローラの駆動速度を相対的に変化させて機体を旋回する普通形コンバインにおいて、走行用油圧式無段変速機構（２９）を動作させる走行変速操作部材（１５）と、旋回用の無段変速機構（３２）を動作させる旋回操作部材（１５）とを連動連結させる走行及び旋回操作連動機構（７３）を備え、運転席（１４）を有する運転台（１６）の下側に連動機構（７３）を配備させたものであるから、運転台（１６）の下側の余剰スペースにコンパクトに連動機構（７３）と組込んで、機体構成の簡素化と連動機構（７３）の損傷などの発生のない良好な保持を図ることができるものである。
【００５６】
また、走行及び旋回連動機構（７３）を運転台（１６）下面に沿わせて略平面状に配設させたものであるから、連動機構（７３）を運転台（１６）下面に平坦状に組込んで、機体構成の一層の簡素化と運転台下側での連動機構（７３）の良好な保持を図ることができるものである。
【００５７】
さらに、運転台（１６）下面の略中央に旋回操作部材（１５）の旋回操作系（７３ａ）を、また運転台（１６）下面の左右両側に走行変速操作部材（７２）の走行操作系（７３ｂ）と、これら走行及び旋回操作出力の連動操作系（７３ｃ）とをそれぞれ配置させたものであるから、旋回操作系（７３ａ）を中心として運転台（１６）下面の左右両側に旋回及び連動操作系（７３ｂ）（７３ｃ）をバランス良くコンパクトに組込み可能とさせることができるものである。
【００５８】
またさらに、旋回操作量に応じ走行速度を減速させる減速操作系（１１６）を、旋回操作系（７３ａ）と走行及び旋回連動操作系（７３ｃ）間に設けたものであるから、運転台（１６）下面に減速操作系（１１６）をコンパクトに組込んで、機体の安定且つ良好な旋回を可能とさせることができるものである。
【００５９】
また、運転台（１６Ａ）と一体に走行及び旋回操作連動機構（７３）を上下方向に回動自在に設けたものであるから、走行及び旋回連動機構（７３）を運転台（１６Ａ）と一体に上方に回動して外部に開放させて、連動機構（７３）の調整や保守点検などを容易とさせて、操作精度の安定維持を図ることができるものである。
【００６０】
さらに、機体後部の走行及び旋回用油圧式無段変速機構（２９）（３２）と、運転台（１６）下側の走行及び旋回操作連動機構（７３）とをワイヤ（７４）（７５）を介し連動連結させたものであるから、例えばリンクなどで連結する従来手段に比べ、設置位置の制約を受けることなく自由度に秀れると共に、構造コンパクトにして正確且つ確実な操作を可能とさせることができるものである。
【図面の簡単な説明】
【図１】コンバインの全体側面図である。
【図２】コンバインの全体平面図である。
【図３】コンバインの全体正面図である。
【図４】ミッションケースの駆動説明図である。
【図５】走行及び旋回連動機構の平面説明図である。
【図６】主変速レバー部の側面説明図である。
【図７】連動操作系部の平面説明図である。
【図８】連動操作系部の側面説明図である。
【図９】連動操作系部の正面説明図である。
【図１０】主変速レバー部の平面説明図である。
【図１１】連動操作系の平面説明図である。
【図１２】ワイヤ受け部の説明図である。
【図１３】コントロールレバー部の説明図である。
【図１４】連動操作系の説明図である。
【図１５】運転台の回動説明図である。
【図１６】脱穀部の断面説明図である。
【図１７】脱穀部の側面説明図である。
【図１８】脱穀部の断面平面説明図である。
【図１９】第１扱胴部の正面説明図である。
【図２０】エンジン部の平面説明図である。
【図２１】エンジン部の背面説明図である。
【図２２】ステップ部の正面説明図である。
【符号の説明】
（４）脱穀部
（８）穀物タンク
（１２）エンジン
（１４）運転席
（１５）操向ハンドル（旋回操作部材）
（１６）（１６Ａ）運転台
（１８）刈取部
（２１）フィーダハウス
（２６）ミッションケース
（２９）走行用油圧式無段変速機構
（３２）旋回用油圧式無段変速機構
（７２）主変速レバー（走行変速操作部材）
（７３）連動機構
（７３ａ）（７３ｂ）（７３ｃ）操作系
（７４）（７５）ワイヤ
（１１６）減速アーム軸（減速操作系）
（１４９）縦排出オーガ
（１５１）（１５３）カバー
（１５５）（１５６）支点軸
（１６２）燃料タンク
（１６８）ガードフレーム
（１７０）油圧装置[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a general combine that threshes rice, wheat, beans, and other grains harvested by a harvesting unit through a feeder house and then threshs the whole.
[0002]
[Problems to be solved by the invention]
2. Description of the Related Art Conventionally, a planetary gear mechanism that has two hydraulic continuously variable transmission mechanisms for traveling and turning, and that forms a differential mechanism between a continuously variable transmission output for traveling and a continuously variable transmission output for turning In the steering means for turning the aircraft by relatively steplessly changing the driving speed of the left and right traveling crawlers according to the continuously variable transmission output for turning, The operation interlocking mechanism of the steering handle and the traveling speed change lever that matches the operating direction of the steering handle with the turning direction of the aircraft is extremely structurally complicated and cannot be easily incorporated into the aircraft. The adjustment and maintenance inspection work cannot be easily performed.
[0007]
[Means for Solving the Problems]
Therefore, the present invention comprises a traveling hydraulic continuously variable transmission mechanism and a turning hydraulic continuously variable transmission mechanism, and the body speed is changed by relatively changing the driving speeds of the left and right traveling crawlers with a continuously variable transmission output for turning. A traveling and turning operation interlocking mechanism that interlocks and connects a traveling speed change operating member that operates the traveling hydraulic continuously variable transmission mechanism and a turning operation member that operates the continuously variable transmission mechanism for turning. Prepare a linkage mechanism under the cab that has the driver's seat, and compactly incorporate the linkage mechanism in the excess space under the cab, simplifying the fuselage structure and generating damage to the linkage mechanism It is intended to achieve good holding without any problems.
[0008]
In addition, the traveling and turning interlocking mechanism is arranged in a substantially flat shape along the lower surface of the cab, and the interlocking mechanism is incorporated in a flat shape on the lower surface of the cab, further simplifying the machine structure and lower the cab It is intended to keep the interlocking mechanism in good condition.
[0009]
Furthermore, the turning operation system of the turning operation member is arranged at the approximate center of the lower surface of the cab, the traveling operation system of the traveling speed change operation member, and the interlocking operation system of these traveling and turning operation outputs are arranged on the left and right sides of the lower surface of the cab. Thus, a turning and interlocking operation system can be incorporated in a well-balanced and compact manner on both the left and right sides of the lower surface of the cab with the traveling output operation system as the center.
[0010]
In addition, a deceleration operation system that reduces the traveling speed according to the amount of turning operation is provided between the turning operation system and the traveling and turning interlocking operation system, and the deceleration operation system is compactly incorporated in the lower surface of the cab to stabilize the aircraft. In addition, it enables a good turning.
[0011]
Also, a traveling and turning operation interlocking mechanism is provided so as to be rotatable in the vertical direction integrally with the cab, and the traveling and turning interlocking mechanism is rotated upward integrally with the cab and opened to the outside. This makes it easy to make adjustments and maintenance inspections, and to maintain stable operation accuracy.
[0012]
In addition, the hydraulic continuously variable transmission mechanism for running and turning at the rear of the fuselage and the running and turning operation interlocking mechanism under the cab are linked and connected via a wire, for example, compared to the conventional means of connecting by a link or the like. It is excellent in freedom without being restricted by the position, and has a compact structure and enables accurate and reliable operation.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is an overall side view of the combine, and FIG. 2 is a plan view thereof. In FIG. 1, (1) is a machine base equipped with a traveling crawler (2) on a track frame (3), and (4) is a traveling direction of the airframe. Threshing section comprising two large and small diameter screw-type first and second barrels (5) and (6) and a swinging sorter (7) as a sorting section, and (8) is threshing. Grain tank which stores the grain of the threshing part (4) which is arranged above the rear part of the part (4) and is taken out through the milling cylinder (9), (10) takes out the grain in the grain tank (8) The upper carry-out auger, (11) is located behind the grain tank (8), and the engine room is provided with the engine (12). (13) is the driver's seat (14) and the steering handle (15) which is a turning operation member. ) And the like provided in the cab (16) and disposed above the front part of the threshing part (4), (17) Left and right of the operator getting on and off for the step of deploying the left and right sides of the cab (16), (18) is a reaper equipped threshing section (4) of the hydraulic lifting cylinder (19) to the lower front through vertically movable in.
[0019]
And the said cutting part (18) is connected with the grain cutting header (20) which takes in uncut grain cereal, and the rear part substantially center of this header (20), and supplies the cutting cereal grain to the threshing part (4) And a feeder house (21), and a reel (22) for cutting uncut cereals, a reciprocating drive type cutting blade (23), and a cereal squeeze over (24). The feeder house (21) is disposed below the cab (16) so as to be shifted to the left from the driver seat (14) in the center of the cab (16), and is taken into the header (20). The harvested cereal culm is sent to the left side of the threshing section (4) via the supply chain conveyor (25) installed in the feeder house (21) for threshing treatment.
[0020]
As shown in FIG. 4, the transmission case (26) for driving the traveling crawler (2) is a traveling hydraulic continuously variable transmission comprising a pair of hydraulic transmission pump (27) and hydraulic transmission motor (28). An output shaft of the engine (12), comprising: a mechanism (29); and a hydraulic continuously variable transmission mechanism (32) for turning comprising a pair of hydraulic steering pumps (30) and a hydraulic steering motor (31) The driving force of (12a) is linked to the input shaft (33) of the speed change and steering pumps (27), (30) via the transmission belt (34) to drive each pump (27), (30). It is configured.
[0021]
The drive wheels (38) and (38) of the left and right traveling crawlers (2) and (2) are connected to the output shaft (35) of the transmission motor (28) via the auxiliary transmission mechanism (36) and the forced differential mechanism (37). The differential mechanism (37) includes a pair of symmetrical planetary gear mechanisms (39) and (39), and the planetary gear mechanism (39) includes one sun gear (40) and The planetary gears (41)... Meshing with the outer periphery of the sun gear (40) and the ring gears (42) meshing with the planetary gears (41).
[0022]
Further, each of the planetary gears (41) is rotatably supported by a carrier (45) of a carrier shaft (44) coaxial with the sun gear shaft (43), and left and right sun gears (40) (40) are supported. The ring gear (42) has internal teeth (42a) that mesh with the planetary gears (41), and the carrier shaft on the same axis as the sun gear shaft (43). (44) is rotatably supported.
[0023]
Furthermore, the traveling hydraulic continuously variable transmission mechanism (29) controls forward / reverse rotation of the transmission motor (28) and the number of rotations by adjusting the angle of the rotary swash plate of the transmission pump (27). The rotational output of the transmission motor (28) is fixed to the sun gear shaft (43) from the transmission gear (46) of the output shaft (35) via the gears (47) (48) (49) and the auxiliary transmission mechanism (36). The sun gear (40) is rotated by being transmitted to the center gear (50). The auxiliary transmission mechanism (36) includes an auxiliary transmission shaft (51) having the gear (49) and a parking brake shaft (53) having a gear (52) meshing with the center gear (50). A low speed gear (54) (52), a medium speed gear (55) (56), and a high speed gear (57) (58) are provided between the shaft (51) and the brake shaft (53). The sub-shift is configured to be switched between a low speed, a medium speed, and a high speed by a sliding operation of the slider (55a) of the speed change gear (55). There is a neutral zone between the low speed and the medium speed and between the medium speed and the high speed. The parking brake shaft (53) is provided with a vehicle speed detection gear (59) and a vehicle speed sensor (60) for detecting the vehicle speed based on the number of rotations of the gear (59), and the rotational force is transmitted to the cutting part (18). The transmission gear (46) of the output shaft (35) is meshed with the PTO input gear (62) of the cutting PTO shaft (61).
[0024]
Then, the driving force from the transmission motor (28) transmitted to the sun gear shaft (43) via the center gear (50) is transmitted to the left and right carrier shafts (44) ( 44), and the rotational output transmitted to each carrier shaft (44) (44) is driven to the left and right via a pair of left and right reduction gears (63) (64), (63) and (64). The wheels (38) and (38) are configured to be transmitted to the axles (38a) and (38a), respectively.
[0025]
Further, the turning hydraulic continuously variable transmission mechanism (32) performs forward / reverse rotation switching and rotation speed control of the steering motor (31) by adjusting and changing the angle of the rotary swash plate of the steering pump (30). Thus, the output gear (66) of the output shaft (65) of the steering motor (31) is rotated through the gear transmission mechanism (67) to the turning gears (69a) (69b) of the turning shaft (68) which is the final output shaft. The output is transmitted, the right turning gear (69a) is meshed with the external teeth (42b) of the right ring gear (42), and the reverse shaft (70) is engaged with the external teeth (42b) of the left ring gear (42). The left turning gear (69b) is connected via the reverse rotation gear (71) of the left and right, the left and right ring gears (42) and (42) are rotated at the same left and right rotational speed when the steering motor (31) is rotated forward, and the left ring gear (42) is rotated forward and the right ring gear (42) is rotated backward. It is configured so as.
[0026]
Thus, when the drive motor (28) for driving is driven in a state where the driving of the steering motor (31) for turning is stopped and the left and right ring gears (42) are stationary and fixed, the transmission motor (28 ) Is transmitted from the center gear (50) to the left and right sun gears (40) at the same rotational speed, and the planetary gear (41), carrier (45), and reduction gears (63) (64) of the left and right planetary gear mechanism (39). ) Is transmitted to the left and right axles (38a) and (38a) in the same rotational direction on the left and right and at the same rotational speed, so that the aircraft travels straight forward and backward. On the other hand, when the turning steering motor (31) is driven to rotate in the forward and reverse directions while the traveling speed change motor (28) is stopped and the left and right sun gears (40) (40) are stationary and fixed, The planetary gear mechanism (39) rotates forward or backward, and the right planetary gear mechanism (39) rotates backward or forward, causing one of the left and right traveling crawlers (2) and (2) to rotate forward and the other to rotate backward. The aircraft is configured to spin or turn on the spot to the left or right to change the direction at the field headland.
[0027]
Further, when the steering motor (31) for turning is driven while the speed changing motor (28) for driving is driven, a difference occurs in the driving speed of the left and right traveling crawlers (2) and (2), and turning with a large turning radius is caused. Thus, the traveling direction is corrected, and the turning radius is determined according to the speed difference between the left and right traveling crawlers (2) and (2).
[0028]
As shown in FIG. 5 to FIG. 13, a main transmission lever (72) which is a traveling transmission operating member connected to the traveling hydraulic continuously variable transmission mechanism (29), and a turning hydraulic continuously variable transmission mechanism (32). And the steering handle (15) connected to the traveling and turning operation interlocking mechanism (73) and the interlocking mechanism (73) via the push-pull traveling speed change and turning wires (74) and (75). It is interlocked with control levers (76) and (77) of continuously variable transmission mechanisms (29) and (32) for running and turning.
[0029]
The operation interlocking mechanism (73) connects the turning operation system (73a) of the steering handle (15), the traveling operation system (73b) of the main transmission lever (72), and these operation systems (73a) (73b). An interlocking operation system (73c), and the operation interlocking mechanism (73) is arranged in a plane along the lower surface (16a) below the cab (16). The lower surface of the cab (16) (16a) A turning operation system (73a) is disposed substantially at the center, a traveling operation system (73b) is disposed on the left side of the lower surface (16a), and an interlocking operation system (73c) is disposed on the right side of the lower surface (16a). The traveling and steering shift operation output from the interlocking operation system (73c) is transmitted to the traveling and turning continuously variable transmission mechanisms (29) and (32) via the wires (74) and (75).
[0030]
The interlock operation system (73c) includes a link attachment body (78) fixed to the fixing plate (77) of the cab (16) lower surface (16a), and a vertical direction supported by the front end of the attachment body (78). A proximal cylindrical shaft (80) is pivotally attached to the first pivot (79) so as to be orthogonal to the first pivot (79), and a second pivot (81) in the front-rear direction and the second pivot (81). Based on a swiveling and shifting rocking link (82) (83) that connects the base end so as to be rotatable about an axis, and a third pivot (84) in the vertical direction supported on the rear end of the mounting body (78). A transmission arm (85) having a fixed end, a swing arm (87) having a proximal end fixed to a rotating cylindrical shaft (86) outside the third pivot (84), and the swing link (82) (83) ) Of the second pivot axis (81) is the output shaft (88) (89) of the operation output section (82a) (83a) at the eccentric position and each arm 87) (85) pivoting and shifting universal joint shafts (90) (91), a shift output arm (92) fixed to the right end of the third pivot (84), and the second pivot (81) A substantially L-shaped rod mounting bracket (93) that is fixedly mounted on the swivel and shifting rods (94) and (95) from the swiveling and traveling operation systems (73a) and (73b). ) In conjunction with the front end and the mounting bracket (93), the turning and shifting output arms (87) and (92) are connected to the wires (75) and (74), with the first pivot (79) as the center. The control lever (76) for traveling is rotated by the rotation (α1) (α2) in the front-rear direction of the variable speed swing link (83), and the swing swing link (82 about the second pivot shaft (81) during travel). ) In the horizontal direction (β1) (β2) The steering shift lever and the steering control are performed by operating the steering control lever (77).
[0031]
The main transmission lever (72) is provided on an operation column (96) standing upright from the cab (16) at the left front of the driver seat (14), and the upper end of the lever (72) is bent toward the driver seat (14). The grip (72a) at the upper end has a cutting lift switch (97) and the like, and a pivot (98), a lever plate (99) and a cylinder shaft ( 100), the base end of the lever (72) can be pivotably attached in the front-rear and left-right directions, and the first swing of the cylindrical shaft (102) supported by the intermediate shaft (101) below the column (96). The lever plate (99) is connected to the moving arm (103) via the vertical rod (104), and the mounting bracket is connected to the second swing arm (105) of the cylindrical shaft (102) via the rod (95). (93) linked to the cab (16) A rotation operation output in the front-rear direction around the pivot (98) of the main transmission lever (72) operated at the side position is transmitted as a shift output to the interlock operation system (73c) on the left side of the cab (16). It is configured. In addition, (106) is a leaf spring that urges the lever (72) in the right direction, and (107) is a stopper bolt that regulates the right movement position of the lever (72).
[0032]
On the other hand, in the turning operation system (73a), a gear (109) is provided on the turning operation shaft (108) at the lower end of the steering handle (15), and the gear is attached to the sector gear (111) attached to the rear rotating shaft (110). (109) and an output arm (112) integrally connected to the sector gear (111) is connected to the front end of the swivel joint shaft (90) via the swivel rod (94), so that the steering handle (15) The turning operation output is transmitted as a turning output to the interlocking operation system (73c), and the turning swing link (82) is turned around the second pivot (81).
[0033]
A neutral positioning plate (113) is provided below the gear (109) of the turning operation shaft (108), and one end of the steering detection link (115) is connected to the protruding shaft (114) on the lower surface of the positioning plate (113). The first swing arm (117) of the deceleration arm shaft (116), which is a deceleration operation system disposed between the turning and interlocking operation systems (73a) (73c), and the other end of the detection link (115) are pivoted. (118), and the second swing arm (119) of the speed reduction arm shaft (116) and the speed change swing link (83) are connected via a universal joint type speed reduction rod (120). In this state, as the steering operation amount of the handle (15) is increased, the deceleration rod (120) is pulled leftward, and the traveling speed is reduced in proportion to the steering operation amount.
[0034]
Reference numeral (121) denotes a turning neutral sensor that detects a neutral position of the positioning plate (113) via a neutral detection link (122).
[0035]
Thus, as shown in FIG. 14, the swivel of the universal joint shafts (90) (91) and the joint portions (90a) (91a) with the transmission arms (87) (85) are connected to the second pivot shaft (81). It arrange | positions in the state substantially matched on the front-back extension horizontal line (L1), the joint part (90b) (91b) with the output shaft (88) (89) of the said universal joint axis | shaft (90) (91), and a reduction rod ( 120), the joint portion (120a) with the swing link (83) is positioned on the vertical vertical extension line (L2) of the first pivot (79) perpendicular to the horizontal line (L1), and the steering handle ( 15) When the main transmission lever (72) is held in the neutral position, the swing link (82) (83) is swung by the operation of either the handle (15) or the lever (72). The link (82) (83) is also connected to the second and first pivots. (81) (79) only rotates around, the joint axis (90) (91) are configured to pivot and shift operation the output is not transmitted.
[0036]
As shown in FIGS. 12 to 13, the shifting and turning wires (74) and (75) are wires fixed to the outside of the threshing left plate (4 a) at the left position of the mission case (26) on the rear side of the threshing part (4). A swing arm (126) at the left end of the outer shaft (124) and the inner shaft (125) of the double shaft structure that faces the other end side to the receiver (123) and horizontally hangs above the mission case (26). The other end of each wire (74) (75) is connected via (127), and the fixed arm (128) (129) on the right end side of the outer shaft (124) and the inner shaft (125) is connected to the rod (130). The main transmission lever (72) and the steering handle (15) are connected to the control levers (76) and (77) of the continuously variable transmission mechanism (29) and (32) for traveling and turning via (131). I will change the running speed and turn the aircraft It is configured to.
[0037]
By the way, as shown in FIG. 15, the cab (16) is divided into a central movable table (16A) and a fixed frame base (16B) around the central movable table (16A). 13) and an interlocking mechanism (73) on the lower surface, and the front end side of the movable base (16A) is supported on the fixed frame base (16B) via the pivot point (132) so as to be movable up and down. When the rear end side of the movable table (16A) is turned upward about the fulcrum shaft (132), the interlock mechanism (73) on the lower surface of the movable table (16A) is opened, and the interlock mechanism (73) is opened. Adjustment and maintenance inspection work are made easy.
[0038]
Then, as shown in FIGS. 11 and 14, when the main transmission lever (72) is operated forward and backward, the swing link (83) is tilted back and forth by an angle (α1) (α2) about the first pivot (79). The joint shaft (91) is pulled or pushed to rotate the transmission arm (85) about the shaft (84) to change the traveling speed and to change the forward / reverse direction, and as shown in FIG. 9, the main transmission lever (72) Is operated to a position other than the neutral position, the steering handle (15) is rotated, and the swing link (82) is angled to the right and left about the second pivot (81) (β1) (β2) When tilting, the joint shaft (90) is pulled or pushed to rotate the swivel arm (87) about the shaft (84), and the steering operation is performed to turn the body left and right. 72) Even if the turning operation is performed in the neutral position, (90a) as a fulcrum, the joint shaft (90) rotates and moves on a conical surface with the line (L1) as the center, and the joint portion (90b on the same circumference around the intersection of the lines (L1) and (L2)) ) Is moved, and the distance between the swing output shaft (88) and the swing arm (87) is kept substantially constant, and therefore the swing arm (87) does not operate. When the turning operation of the handle (19) is performed when the main transmission lever (72) is not in the neutral position, the turning arm (87) operates, and when the forward / reverse switching is performed, the turning arm (87) moves forward and backward. It operates in the reverse direction, and the steering motor (31) is configured to rotate in the reverse direction during forward and reverse travel.
[0039]
For example, assuming that the forward rotation of the traveling speed change motor (28) is forward, the operation of the planetary gear mechanism (39) by the turning steering motor (31) during reverse rotation is the forward and reverse travel. In order to match the turning direction of the airframe by operating the handle (15) during forward and reverse travel, the swash plate angle of the steering pump (30) is reversed during reverse rotation (reverse travel) of the transmission motor (28). The steering motor (31) is configured to rotate in the reverse direction during forward and reverse travel.
[0040]
Further, the swing link (83) during forward operation is tilted to the forward angle (α1) side from the neutral position, and the swing rod (94) is pushed to the right by the right turn operation of the handle (15), so that the swing link (82 ) To the right angle (β1) side, the output portion (82a) of the swing link (82) is moved away from the swing arm (87) side, and the pivot joint shaft is centered on the third pivot (84). The swing arm (87) is swung in a direction (clockwise in FIG. 7) in which the joint (91a) with (91) is brought closer to the swing link (82) side, and the control lever is connected via the swivel wire (75). (77) is rotated downward, and the steering motor (31) for turning is rotated forward. That is, the aircraft is configured to turn right (the speed of the traveling crawler (2) is large on the left side and small on the right side) by moving forward.
[0041]
Further, during the forward operation of tilting the main transmission lever (72) forward, the turning rod (94) is pulled by the left turning operation of the handle (15), and the swing link (82) is moved to the left angle (β2) side. By tilting the output portion (82a) of the swing link (82) closer to the turning arm (87) side, and the joint portion (91a) with the turning joint shaft (91) about the third pivot (84). The swing arm (87) is swung in a direction away from the swing link (82) side (counterclockwise in FIG. 7), the control lever (77) is rotated upward, and the steering motor (31 ) In the reverse direction. That is, it is configured to turn the aircraft forward (turn the speed of the traveling crawler (2) large on the right side and small on the left side).
[0042]
Further, the rocking link (83) is tilted toward the angle (α2) behind the neutral position by the backward operation of tilting the main transmission lever (72) backward, and the turning rod (94) is moved by the right rotation operation of the handle (15). By pushing rightward and tilting the swing link (82) to the right angle (β1) side, the output portion (82a) of the swing link (82) is brought closer to the swing arm (87) side, and the third pivot ( 84), the joint arm (91a) with the pivot joint shaft (91) is pivoted in the direction away from the swing link (82) (counterclockwise in FIG. 7), and the control is performed. The lever (77) is rotated upward, and the steering motor (31) is reversely rotated. In other words, the vehicle is configured to turn backward (turn the crawler (2) at a higher speed on the left side and lower on the right side).
[0043]
In addition, when the main transmission lever (72) is operated backward, the swing link (82) is tilted to the left angle (β2) side by the left turn operation of the handle (19), thereby the swing link (82). The output portion (82a) is moved away from the swivel arm (87), and the swivel link (82) is swung with the swivel link (82) with the swivel joint shaft (91) centered on the third pivot (84). 82) is rotated in a direction approaching the side (clockwise in FIG. 7), the control lever (77) is rotated downward, and the steering motor (31) is rotated forward. That is, the aircraft is configured to turn backward (turn the crawler (2) at a higher speed on the right side and lower on the left side).
[0044]
In this way, the turning arm (87) is rotated in the reverse direction in the forward and backward turning operations, and the turning operation direction of the steering handle (15) and the turning direction of the airframe are made to coincide with each other in the forward and backward movements. It is configured as follows.
[0045]
By the way, as shown in FIGS. 16 to 19, the threshing portion (4) is provided with a second handling cylinder (6) at the same axial center height behind the first handling cylinder (5). 2 The handling cylinders (5) and (6) are orthogonally crossed with respect to the input direction of the cereals from the feeder house (21), and the cereals introduced to the left side of the first handling cylinder (5) from the feeder house (21) 1 feed cylinder (5) is laterally fed to the right, and the right end communicating rod (133) of the first handle cylinder (5) is passed to the second handle cylinder (6) behind by the vane blade (134). It is configured such that it is laterally fed in the left direction, and the waste port (135) at the left end is discharged backward by the waste blade (136).
[0046]
The swing sorter (7) is disposed below the first and second handling cylinders (5) and (6), and the Kara (137) and Nos. 1 and 2 are placed below the swing sorter (7). A number conveyor (138) (139) and the like are disposed, and a third port (140), which is a discharge port, is opened behind the sorting board (7).
[0047]
Then, the left and right threshing side plates (4a) and (4b) constituting the threshing part (4) are used as supporting members, the grain tank (8) is arranged on the rear upper side of the threshing part (4), and the engine room ( 11) are integrally formed, and the bottom plate (141) of the grain tank (8) and the bottom plate (142) of the engine room (11) are used as the rear top plate of the threshing section (4).
[0048]
In addition, the first handling cylinder cover (143) at the top of the first handling cylinder (5) is provided so as to be freely open upward about the rear fulcrum shaft (144), and the second handling cylinder at the top of the second handling cylinder (6). A cover (145) is detachably provided, and the left threshing side plate (4a) is provided outside the left threshing side plate (4a), and the second product from the second cereal tube (9) and the second conveyor (139) is returned to the swing sorter (7). An engine drive system (147) for driving the number reduction cylinder (146), the first and second barrels (5), (6), and the like is disposed. Further, the vertical discharge auger (149) for transferring the grain taken out to the right outer side of the tank (8) by the bottom discharge auger (148) in the grain tank (8) to the upper discharge auger (10), the first and second The drive system (150) of the number conveyor (138) (139) is disposed outside the right threshing side plate (4b), and the left and right threshing side plates (4a) (4b) are arranged outside the left and right threshing side covers (151) (152). (153) It is configured to cover with (154).
[0049]
The left and right threshing side covers (151), (152), (153) and (154) are divided into an upper cover (151) (153) and a lower cover (152) (154), and the left and right lower covers (152) (154) is detachably provided, and left and right upper covers (151) and (153) are provided so as to be freely open upward about the upper fulcrum shafts (155) and (156). This makes it possible to easily perform maintenance and inspection.
[0050]
As shown in FIGS. 17, 20, and 21, a radiator (158) is disposed in the left opening of the engine room (11) facing the cooling fan (157) of the engine (12), and the radiator (158). The outer cover is covered with a radiator cover (159). The radiator cover (159) has an oil cooler (160) attached to the inner side surface, and covers the right outer side with the rear fulcrum shaft (161) at the rear end of the cover (159) as the center. (159) is provided to be freely opened.
[0051]
The fuel tank (162) of the engine (12) is disposed outside the right threshing side plate (4b) below the engine (12), and the grain tank (8) in front of the vertical discharge auger (149). A hydraulic oil tank (163) for supplying hydraulic oil to the continuously variable transmission mechanism (29) (32) is disposed on the right outer surface of the threshing section (4), grain tank (8), engine ( 12) These tanks (162) and (163) are configured so as to be simply arranged without adversely affecting them. In addition, (164) is an air cleaner and (165) is an exhaust pipe.
[0052]
Further, the rear threshing cover (166) behind the engine frame (11) is provided to be freely opened rearward around the left fulcrum shaft (167) on the left side, so that maintenance and inspection of the engine (12) can be easily performed. It is configured to make it.
[0053]
Furthermore, a rear guard frame (168) is provided behind the threshing part (4) rear side transmission case (26), and the intermediate part of the gate-shaped guard frame (168) is lowered rearward of the mission case (26). In addition to facing the slope, the left and right base ends of the guard frame (168) are fixed to the left and right side plates (4a) and (4b), so that there are obstacles in the field when the aircraft is moving backwards. The dynamic sorter (7) and the third exit (140) are configured to be protected from obstacles. Then, the shifting and turning wires (74) and (75) are connected to the swinging arms (126) and (127) of the outer shaft (124) and the inner shaft (125). ) Easy to enable from outside, and to enable connecting / disconnecting operation and adjusting operation of each rod (130) (131) and control lever (76) (77) from the rear side of the machine. It is configured as follows.
[0054]
On the other hand, as shown in FIGS. 17 and 21, the battery (169), the hydraulic lifting cylinder (19) and the horizontal control are provided on the right side of the feeder house (21) inside the step (16a) of the cab (16). A hydraulic device (170) such as a cylinder switching operation valve is centrally arranged, and a battery (169) and a hydraulic device (in the surplus space (171) formed between the right side of the feeder house (21) and the lower side of the step (16a) ( 170) is compactly and satisfactorily stored and held, and maintenance and inspection are facilitated, so that these performances can be stably maintained.
[0055]
【The invention's effect】
As is apparent from the above-described embodiments, the present invention includes the traveling hydraulic continuously variable transmission mechanism (29) and the turning hydraulic continuously variable transmission mechanism (32). In a normal combine that turns the vehicle body by relatively changing the driving speed of the traveling crawler, a traveling transmission operation member (15) that operates the traveling hydraulic continuously variable transmission mechanism (29), and a continuously variable transmission for turning A traveling and turning operation interlocking mechanism (73) for interlockingly connecting the turning operation member (15) for operating the mechanism (32) is provided, and the interlocking mechanism (73) is provided below the cab (16) having the driver seat (14). ) Is deployed, the interlocking mechanism (73) is compactly incorporated into the excess space below the cab (16) to simplify the fuselage structure and cause damage to the interlocking mechanism (73). Good holding without any It is intended.
[0056]
Further, since the traveling and turning interlocking mechanism (73) is arranged in a substantially flat shape along the lower surface of the cab (16), the interlocking mechanism (73) is flattened on the lower surface of the cab (16). Incorporating, it is possible to achieve further simplification of the machine structure and good holding of the interlocking mechanism (73) under the cab.
[0057]
Furthermore, a turning operation system (73a) of the turning operation member (15) is provided at the approximate center of the lower surface of the cab (16), and a traveling operation system (72) of the traveling transmission operation member (72) is provided on both the left and right sides of the lower surface of the cab (16). 73b) and the interlocking operation system (73c) for the output of the traveling and turning operations are respectively arranged. Therefore, the turning and interlocking is performed on both the left and right sides of the lower surface of the cab (16) around the turning operation system (73a). The operation systems (73b) and (73c) can be incorporated in a well-balanced and compact manner.
[0058]
Furthermore, since a deceleration operation system (116) for reducing the traveling speed according to the turning operation amount is provided between the turning operation system (73a) and the traveling and turning interlocking operation system (73c), the cab (16 ) A deceleration operation system (116) is compactly incorporated in the lower surface, and the aircraft can be turned stably and satisfactorily.
[0059]
Further, since the traveling and turning operation interlocking mechanism (73) is provided so as to be rotatable in the vertical direction integrally with the cab (16A), the traveling and turning interlocking mechanism (73) is integrated with the cab (16A). It can be rotated upward to open to the outside, facilitating adjustment and maintenance inspection of the interlocking mechanism (73), and stable operation accuracy can be achieved.
[0060]
Further, the hydraulic continuously variable transmission mechanism (29) (32) for traveling and turning at the rear of the machine body and the traveling and turning operation interlocking mechanism (73) below the cab (16) are connected to the wires (74) (75). Because it is linked to each other, for example, it is superior in freedom without being restricted by the installation position compared to conventional means that are linked by a link, etc., and it can be made compact and accurate and reliable operation can be achieved. It is something that can be done.
[Brief description of the drawings]
FIG. 1 is an overall side view of a combine.
FIG. 2 is an overall plan view of the combine.
FIG. 3 is an overall front view of the combine.
FIG. 4 is a driving explanatory diagram of a mission case.
FIG. 5 is an explanatory plan view of a traveling and turning interlocking mechanism.
FIG. 6 is an explanatory side view of a main transmission lever portion.
FIG. 7 is an explanatory plan view of an interlocking operation system unit.
FIG. 8 is an explanatory side view of the interlock operation system unit.
FIG. 9 is a front explanatory view of an interlocking operation system unit.
FIG. 10 is an explanatory plan view of a main transmission lever portion.
FIG. 11 is an explanatory plan view of the interlock operation system.
FIG. 12 is an explanatory diagram of a wire receiving portion.
FIG. 13 is an explanatory diagram of a control lever portion.
FIG. 14 is an explanatory diagram of an interlock operation system.
FIG. 15 is an explanatory view of the rotation of the cab.
FIG. 16 is a cross-sectional explanatory view of a threshing portion.
FIG. 17 is a side view of a threshing unit.
FIG. 18 is a cross-sectional plan view of a threshing portion.
FIG. 19 is a front explanatory view of a first handling barrel.
FIG. 20 is an explanatory plan view of an engine unit.
FIG. 21 is a rear view of the engine unit.
FIG. 22 is a front explanatory view of a step unit.
[Explanation of symbols]
(4) Threshing part
(8) Grain tank
(12) Engine
(14) Driver's seat
(15) Steering handle (turning operation member)
(16) (16A) Driver's cab
(18) Mowing section
(21) Feeder house
(26) Mission case
(29) Hydraulic continuously variable transmission mechanism for traveling
(32) Hydraulic continuously variable transmission mechanism for turning
(72) Main speed change lever (travel speed change operation member)
(73) Interlocking mechanism
(73a) (73b) (73c) Operation system
(74) (75) Wire
(116) Deceleration arm axis (deceleration operation system)
(149) Vertical discharge auger
(151) (153) Cover
(155) (156) Support shaft
(162) Fuel tank
(168) Guard frame
(170) Hydraulic device

Claims

A normal type that has a hydraulic continuously variable transmission mechanism for traveling and a hydraulic continuously variable transmission mechanism for turning, and that turns the airframe by relatively changing the driving speed of the left and right traveling crawlers with a continuously variable transmission output for turning. In the combine, a traveling and turning operation interlocking mechanism that interlocks and connects a traveling speed change operating member that operates the traveling hydraulic continuously variable transmission mechanism and a turning operation member that operates the turning hydraulic continuously variable transmission mechanism, A swivel operation system of the swivel operation member at a substantially center of the bottom surface of the cab and the left and right sides of the cab bottom surface. A travel operation system of the travel speed change operation member and an interlock operation system of these travel and turning operation outputs are arranged on both sides, and a neutral positioning plate is provided below the gear of the turning operation shaft, and a protruding shaft on the lower surface of the positioning plate Steer One end of the output link is connected, and the first swing arm of the reduction arm shaft, which is a reduction operation system disposed between the turning and interlocking operation systems, and the other end of the detection link are connected via the shaft, and the reduction arm shaft The second swing arm and the variable speed swing link are connected via a universal joint type deceleration rod, and the deceleration operation system for reducing the traveling speed according to the amount of the turning operation is the turning operation system and the traveling and turning interlocking operation system. A normal type characterized in that a main speed change lever is provided in an operation column that is provided between the driver's seat on the left front side of the driver's seat and the upper end portion of the main speed change lever is bent toward the driver's seat side. Combine.