JP3736546B2

JP3736546B2 - Combine

Info

Publication number: JP3736546B2
Application number: JP2003154684A
Authority: JP
Inventors: 靖藤田
Original assignee: Iseki and Co Ltd
Current assignee: Iseki and Co Ltd
Priority date: 2003-05-30
Filing date: 2003-05-30
Publication date: 2006-01-18
Anticipated expiration: 2021-01-18
Also published as: JP2004000231A

Description

【０００１】
【発明の属する技術分野】
本発明は、コンバインに関する技術分野に属する。
【０００２】
【従来の技術】
従来より、特開平１−２６５８２０号公報に開示されているように、刈取部を刈取上下シリンダによって上下動自在に設け、刈取クラッチを入り切り操作するクラッチ操作レバ−と前記刈取部とを連動装置により機械的に連動し、刈取部を所定高さ以上に上動させると、前記クラッチ操作レバ−をクラッチ切り位置まで動かせて刈取クラッチを切り作動させて刈取部の各部の駆動を停止させるように連動すると共に、クラッチ操作レバ−を切り位置に動かすタイミングを早くあるいは遅く変更調節できるように構成する技術が知られている。
【０００３】
これにより、圃場の一辺を刈り終えて旋回する際に、刈取装置を非作業高さまで上昇させると、刈取クラッチが切れて刈取部の駆動が停止する。これにより、旋回を安全に行うことができると共に、刈取部から発生する騒音や振動を低減でき、また、刈取部の耐久性の向上も期待できるものである。
【０００４】
【発明が解決しようとする課題】
しかしながら、上述の特開平１−２６５８２０号公報に開示された技術では、刈取部を所定高さ以上に上動させると、クラッチ操作レバ−が刈取クラッチ切り位置まで動くため、この後、刈取部を作業高さまで下げて刈取作業を再開する際には、このクラッチ操作レバ−を刈取クラッチ入り位置に再操作してやらねばならず、この刈取クラッチの操作性が悪く、作業能率が低くなる欠点があった。
【０００５】
【課題を解決するための手段】
本発明は、上述の如き課題を解決するために、次のような技術的手段を講じる。
【０００６】
即ち、機体フレーム（１）側に回動自在に支持した横筒（６２）に支持パイプ（６１）の基部を取付け、該支持パイプ（６１）の下部に横向きの下部フレ−ム（５８）の左右略中央位置を固定し、該下部フレ−ム（５８）の左右側部に縦向きの側部フレ−ム（５９）を取付け、該側部フレ−ム（５９）の上部に横向きの上部フレ−ム（６０）を連結し、該上部フレ−ム（６０）に複数の取付伝動筒（９０）を設け、該取付伝動筒（９０）にラグ式引起装置（６）を取付け、前記横筒（６２）側に設けた刈取部入力プ−リ（６４）の回転を前記下部フレ−ム（５８）内に設けた伝動軸（６５）および側部フレ−ム（５９）内の伝動軸（６６）および上部フレ−ム（６０）内に設けた伝動軸（６７）によって各部に伝動すべく構成するに、前記側部フレ−ム（５９）内の伝動軸（６６）の上下方向中間部から刈取部（４）の左右側部の株元側穀稈搬送装置（２２）と穂先側穀稈搬送装置（２３）とを駆動し且つ前記上部フレ−ム（６０）内の伝動軸（６７）からラグ式引起装置（６）を駆動すべく構成して刈取部（４）を成し、該刈取部（４）を刈取上下シリンダ（６３）によって上下動自在に設け、刈取クラッチ（８３）を入り切りさせるクラッチ操作レバ−（８５）が刈取クラッチ入り状態にあっても、刈取部（４）を機体フレーム（１）に対して設定高さ以上に上動させると、前記クラッチ操作レバ−（８５）を刈取クラッチ入り状態にしたままで前記刈取クラッチ（８３）を自動的に切り作動して刈取部（４）の各部の駆動を停止させるように連繋すると共に、機体フレ−ム（１）の下方に設ける走行装置（２）に車体の水平制御を行うことのできるロ−リング機構およびピッチング機構を設け、車高を上げたとき又はピッチング機構によって機体フレーム（１）を前下りにしたときに前記刈取クラッチ（８３）を自動的に切りにする刈取部（４）の機体フレーム（１）に対する設定高さを自動的に補正するように構成したことを特徴とするコンバインとしたものである。
【０００７】
これにより、刈取上下シリンダ６３を短縮作動させて刈取部４を設定高さより低い位置とし、クラッチ操作レバ−８５を刈取クラッチ入り状態に操作すると、横筒６２側に設けた刈取部入力プ−リ６４がエンジンの駆動力によって回転し、この回転が下部フレ−ム５８内に設けた伝動軸６５および側部フレ−ム５９内の伝動軸６６および上部フレ−ム６０内に設けた伝動軸６７によって各部に伝動され、側部フレ−ム５９内の伝動軸６６の上下方向中間部から刈取部４の左右側部の株元側穀稈搬送装置２２と穂先側穀稈搬送装置２３とが駆動され、且つ、上部フレ−ム６０内の伝動軸６７から刈取部４の左右中間部のラグ式引起装置６と穂先側穀稈搬送装置２３とが駆動されて穀稈の刈取作業が行える状態となる。
【０００８】
この刈取作業において、特に刈取部４の左右側部の株元側穀稈搬送装置２２と穂先側穀稈搬送装置２３とが側部フレ−ム５９内の伝動軸６６の上下方向中間部から駆動されるため、これら刈取部４の左右側部の株元側穀稈搬送装置２２と穂先側穀稈搬送装置２３との下側に開放的な空間を形成することが可能となり、藁屑や雑草の停滞が少なくなる。
【０００９】
そして、刈取上下シリンダ６３を伸長作動させて刈取部４を機体フレーム１に対して設定高さ以上に上動させると、前記クラッチ操作レバ−８５を刈取クラッチ入り状態にしたままで、刈取クラッチ８３が自動的に切り作動して刈取部４の各部の駆動が停止する。
【００１０】
尚、例えば湿田において、コンバインの走行装置が大きく沈下したり車体が前下がりに傾斜しても、刈取クラッチ８３が自動的に切りとなる刈取部４の機体フレーム１に対する設定高さを補正することにより、刈取部４の駆動が停止する対地高さを適正なものとすることが可能である。
【００１１】
また、刈取部４を機体フレーム１に対して設定高さ以上に上動させても、クラッチ操作レバ−８５は刈取クラッチ入り状態のままであるため、この後、刈取部４を作業高さまで下げて刈取作業を再開する際に、このクラッチ操作レバ−８５を刈取クラッチ入り位置に再操作する必要がない。
【００１２】
また、機体フレ−ム１の下方に設ける走行装置２には、車体の水平制御を行うことのできるロ−リング機構およびピッチング機構が設けられており、車高を上げたとき又はピッチング機構によって前下りにしたときに前記刈取クラッチ８３が自動的に切りとなる刈取部４の機体フレーム１に対する設定高さが自動的に補正され、刈取部４を少し上動させる刈高さ調節を行っただけでは刈取部４が停止しないようになる。
【００１３】
【発明の効果】
本発明によると、刈取上下シリンダ６３を伸長作動させて刈取部４を機体フレーム１に対して設定高さ以上に上動させることにより、クラッチ操作レバ−８５を刈取クラッチ入り状態にしたままで、刈取クラッチ８３を自動的に切り作動させて刈取部４の各部の駆動を停止させることができるため、例えば圃場における一辺刈り終り時の旋回を安全に行うことができ、また、刈取部４から発生する騒音や振動を低減でき、また、刈取部４の耐久性を向上させることができる。
【００１４】
また、刈取部４を機体フレーム１に対して設定高さ以上に上動させて刈取クラッチ８３を切り作動させても、クラッチ操作レバ−８５は刈取クラッチ入り状態のままであるため、この後、刈取部４を作業高さまで下げて刈取作業を再開する際に、このクラッチ操作レバ−８５を刈取クラッチ入り位置に再操作する必要がなく、操作性が向上する。
【００１５】
また、例えば湿田において、コンバインの走行装置が大きく沈下したり車体が前下がりに傾斜した場合には、刈取部４が圃場面に干渉しないように刈取部４を車体に対して大きく上動させて刈取作業をせねばならないが、このように刈取部４を通常よりも高く上動させて刈取作業を行う場合でも、刈取クラッチ８３が自動的に切りとなる刈取部４の機体フレーム１に対する設定高さを補正できるため、刈取部４の駆動が停止する対地高さを適正なものとして、刈取走行中に刈取部４の駆動が停止してしまうような状態を回避でき、刈取作業を円滑に行うことができる。
【００１６】
また、刈取部４を作業高さまで下動させて刈取作業を行う際、特に刈取部４の左右側部の株元側穀稈搬送装置２２と穂先側穀稈搬送装置２３とが側部フレ−ム５９内の伝動軸６６の上下方向中間部から駆動されるため、これら刈取部４の左右側部の株元側穀稈搬送装置２２と穂先側穀稈搬送装置２３との下側に開放的な空間を形成することが可能となり、藁屑や雑草の停滞が少なくなって刈取作業を円滑に行うことができる。
【００１７】
また、車高を上げたとき又はピッチング機構によって機体フレーム１を前下りにしたときに刈取クラッチ８３を自動的に切りにする刈取部４の機体フレーム１に対する設定高さを自動的に補正して、刈取部４を少し上動させる刈高さ調節を行っただけでは刈取部４が停止しないようにすることができる。
【００１８】
【発明の実施の形態】
本発明の実施の形態を図面により説明すると、１はコンバインの機体フレーム、２は該機体フレーム１の下方に設けた走行装置、３は機体フレーム１の上方に設けた脱穀装置、４は脱穀装置３の前方位置に設けた刈取部である。刈取部４は、その最前方位置に固定式分草体５を設け、該固定式分草体５の後方にラグ回動式引起装置６を設ける。ラグ回動式引起装置６は公知の構造のものであり、縦方向のケース７内に、前後方向の横軸回転の上下一対の歯車（図示省略）と、該歯車に掛回した無端チエンと、該チエンに所定間隔を置いて複数起伏自在に取付けた引起ラグ８と、該引起ラグ８を起伏させるガイドおよび前記チエンの駆動機構等を設けて構成する。したがって、ラグ回動式引起装置６の引起ラグ８は機体進行方向に対して交差する方向に回動して穀稈を引起し、上方まで回動すると折畳まれてケース７内を下動し、ケース７の下部にて突出して再び上昇する。
【００１９】
しかして、刈取部４の左右両側および引起ラグ８が折畳まれてケース７内を下動するラグ回動式引起装置６の非作用側には分草および引起を補助しうるラグ回動式分草装置１０を設ける。ラグ回動式分草装置１０は、ラグ回動式引起装置６と略同様に、ケース１１内に設けた左右方向の横軸回転の歯車１２、１３に無端チエン１４を掛け回し、該無端チエン１４に所定間隔を置いて複数起伏自在に分草ラグ１５を取付け、該分草ラグ１５を起伏させるガイド（図示省略）および前記無端チエン１４の駆動機構（図示省略）等を設けて構成するが、前記歯車１２および歯車１３は左右方向の横軸回転に構成し、分草ラグ１５が機体進行方向と並行に回動して穀稈の分草および引起しを行なうようにしている。
【００２０】
１９は掻込装置、２０はスターホイル、２１は刈刃、２２は株元側穀稈搬送装置、２３は穂先側穀稈搬送装置、２４は株元側穀稈引継搬送装置、２５は穂先側引継搬送装置、２６は後側集束装置、２７は穀稈供給搬送装置、２８は扱胴である。
【００２１】
しかして、走行装置２の走行速度と刈取部４の作業速度は、走行速度と作業速度走とを同調して変速し、かつ、刈取部４への回転伝達経路には刈取部変速装置３０を設けて走行速度に対して刈取部４の作業速度を相対的に早くすることも可能に構成して、倒伏穀稈の刈取を円滑に行なえるように構成する。そして、前記ラグ回動式分草装置１０は、刈取部変速装置３０により倒伏モードにしたとき作動するように構成する。以下、具体的構成について説明する。
【００２２】
３１は前記走行装置２に回転を伝達するミッションケースであり、該ケース３１には、ＨＳＴ変速機構３８（油圧式無段変速装置ハイドロスタチックトランスミッション）のＨＳＴモータ３２を設け、ＨＳＴモータ３２はＨＳＴポンプ３３と送油パイプにより接続し、ＨＳＴポンプ３３によるＨＳＴモータ３２への送油量を無段階に変更することでエンジン３４の回転を無段階に変速しながら車軸３５に伝達する。
【００２３】
前記ミッションケース３１には、車軸３５に伝達するのと同様にＨＳＴ変速機構３８により変速された回転を伝達する出力軸３６を設け、出力軸３６の回転は刈取部変速装置３０の入力軸３７に伝達する。刈取部変速装置３０の入力軸３７には、該入力軸３７に対して回転自在の倒伏用歯車３９に伝達する回転を継脱する倒伏用クラッチ４０と、前記入力軸３７に対して回転自在の標準用歯車４１に伝達する回転を継脱する標準用クラッチ４２を設け、倒伏用クラッチ４０と標準用クラッチ４２はいずれか一方が入のときいずれか他方が切となるように構成する。
【００２４】
また、刈取部変速装置３０には、前記入力軸３７と平行に設けた変速用中間軸４３を設け、変速用中間軸４３には前記倒伏用歯車３９に噛合う中間小歯車４４および前記標準用歯車４１に噛合う中間大歯車４５を固定する。前記変速用中間軸４３の近傍には切替クラッチ軸４６を設け、切替クラッチ軸４６には前記中間大歯車４５に噛合うミッション側入力歯車４７を回転自在に取付け、ミッション側入力歯車４７と前記切替クラッチ軸４６の間にミッション側入力クラッチ４８を設ける。また、前記切替クラッチ軸４６には、エンジン３４の回転が伝達されるエンジン側入力歯車４９を設け、エンジン側入力歯車４９と切替クラッチ軸４６との間にエンジン側入力クラッチ５０を設ける。ミッション側入力クラッチ４８とエンジン側入力クラッチ５０は、いずれか一方が入のときいずれか他方が切となるように構成するが、通常ミッション側入力クラッチ４８が「入」となるように構成し、刈取部４の作業速度が所定速度以上に早くなると、自動的にエンジン側入力クラッチ５０を入にして一定回転を刈取部４に伝達させる。
【００２５】
前記切替クラッチ軸４６の近傍には、刈取部変速装置３０の出力軸５３を設け、該出力軸５３の歯車５４と前記切替クラッチ軸４６に設けた歯車５５とを噛合わせ、出力軸５３には刈取部４等に出力する刈取部出力プーリ５６を設ける。
【００２６】
したがって、刈取部変速装置３０内には、標準用クラッチ４２から出力軸５３に至る標準用伝達経路Ａと、倒伏用クラッチ４０から出力軸５３に至る倒伏用伝達経路Ｂと、エンジン３４から出力軸５３に至る一定速度用伝達経路Ｃとが形成される。
【００２７】
しかして、前記刈取部４は、前記ラグ回動式引起装置６およびラグ回動式分草装置１０および刈刃２１等を刈取部フレーム５７に取付けて構成する。５８は下部フレームであり、該下部フレーム５８の左右側部に縦方向の側部フレーム５９を設け、左右の側部フレーム５９の上部を上部フレーム６０で連結し、前記下部フレーム５８の略中央位置に支持パイプ６１の下部を固定し、支持パイプ６１の基部には横筒６２を設け、該横筒６２を機体側に回転自在に支持し、刈取上下シリンダ６３により上下回動自在に設ける。
【００２８】
前記横筒６２には前記刈取部出力プーリ５６に対応する刈取部入力プーリ６４を設け、該刈取部入力プーリ６４の回転を前記下部フレーム５８内に設けた伝動軸６５および側部フレーム５９内の伝動軸６６および上部フレーム６０内に設けた伝動軸伝動軸６７により各部に伝達する。
【００２９】
前記上部フレーム６０の左右端部には、前後方向の支持部材６８、６９を設け、支持部材６８、６９には左右方向の支持筒７０、７１を設け、支持筒７０および支持筒７１内には伝動軸７２、７３を設け、支持筒７０、７１および伝動軸７２、７３にはそれぞれ前記ラグ回動式分草装置１０のケース１１および歯車１２を取付ける。上部フレーム６０の伝動軸６７の端部には補助分草引起入切クラッチ７５を設け、該補助分草引起入切クラッチ７５によりラグ回動式分草装置１０の作動を入切するが、前記したように、この補助分草引起入切クラッチ７５を前記刈取部変速装置３０の倒伏用クラッチ４０に対応させて作動させる。７６は伝動軸６７に摺動のみ自在に設けた摺動係合部材、７７は伝動軸６７に遊嵌した伝達歯車、７８はシフタ、７９はシフタ７８を作動させるモータであり、摺動係合部材７６と伝達歯車７７とシフタ７８とモータ７９により補助分草引起入切クラッチ７５を構成し、モータ７９によりシフタ７８を回動させて摺動係合部材７６と伝達歯車７７とを継脱させる。８０は前記伝動軸７２、７３に設けた歯車、８１はチエンである。
【００３０】
しかして、前記刈取部入力プーリ６４より前記ラグ回動式引起装置６に至る回転伝達経路中には、引起ラグ８の回動の負荷を検出する引起負荷検出装置８２を設け、該引起負荷検出装置８２により前記刈取部変速装置３０内の標準用クラッチ４２および倒伏用クラッチ４０ならびに補助分草引起入切クラッチ７５の作動を制御するように構成する。即ち、倒伏穀稈の場合、ラグ回動式引起装置６の引起しに掛る負担が大となって、引起負荷検出装置８２がこの負荷を検知すると、倒伏穀稈作業モードとし、倒伏用クラッチ４０および補助分草引起入切クラッチ７５を入にし、負荷が減少すると、倒伏用クラッチ４０および補助分草引起入切クラッチ７５を切とし、標準用クラッチ４２を入にする。引起負荷検出装置８２は側部フレーム５９内の伝動軸６６の捩じれをセンサ（歪ゲージ）により検出する構成である。
【００３１】
しかして、本実施例では、刈取部４の上下に関し、刈取クラッチ８３と脱穀クラッチ８４を入切させる刈脱クラッチ操作レバー（クラッチ操作レバ−）８５が共に入状態であっても、刈取部４を機体フレーム１に対して設定高さ以上に上動させると自動的に前記刈取クラッチ８３を切にして刈取部４を停止させるピタトマル（登録商標）自動制御を行なっている。また、前記走行装置２には車体の水平制御を行なうローリング機構およびピッチング機構を設けているが、前記ローリング機構および／またはピッチング機構により車高を上げたときまたは前下りのとき、ピタトマル（登録商標）自動制御における刈取部４を停止させる刈取部４の設定高さを機体の状態により自動的に補正する。即ち、前記ローリング機構および／またはピッチング機構により車高を上げたときまたは前下りのときは、刈取部４を少し上動させた刈高さ調節のときもピタトマル（登録商標）自動制御により刈取部４が停止することを防止したものである。
【００３２】
図中、８６は一定速度用伝達経路Ｃを構成する複数の中間歯車群８７を設けた中間軸、８８は中間伝動軸、８９は脱穀部への出力プーリ、９０は前記ラグ式引起装置６を取付ける取付伝動筒である。
【００３３】
次に作用を述べる。
（通常作業）
エンジン３４の回転がＨＳＴポンプ３３に伝達され、ＨＳＴポンプ３３はＨＳＴモータ３２への送油量を無段階に増減させることにより変速してミッションケース３１の車軸３５に回転を伝達して機体を走行させる。他方、ＨＳＴモータ３２を介してミッションケース３１に伝達された回転は出力軸３６を介して刈取部変速装置３０の入力軸３７に伝達され、通常は入となっている標準用クラッチ４２により入力軸３７の回転が標準用歯車４１に伝達され、標準用歯車４１の回転が中間大歯車４５を介してミッション側入力歯車４７に伝達され、切替クラッチ軸４６に遊嵌されているミッション側入力歯車４７の回転はミッション側入力クラッチ４８により切替クラッチ軸４６に伝達され、切替クラッチ軸４６の回転が切替クラッチ軸４６に固定の歯車５５と出力軸５３に固定の歯車５４を介して出力軸５３に伝達されるという標準用クラッチ４２から出力軸５３に至る標準用伝達経路Ａにより伝達され、刈取部出力プーリ５６より刈取部４に出力される。
【００３４】
そして、刈取部４は固定式分草体５により分草し、ラグ回動式引起装置６により引起し、ラグ回動式引起装置６により引起した穀稈をラグ回動式分草装置１０により分草し、掻込装置１９により掻込んで刈刃２１で刈取り、刈取った穀稈の株元は株元側穀稈搬送装置２２で、穂先側は穂先側穀稈搬送装置２３で搬送し、この穀稈を株元側穀稈引継搬送装置２４および穂先側穀稈引継搬送装置２５により脱穀装置３の脱穀室に供給する穀稈供給搬送装置２７に引継ぎ、脱穀する。この場合、ＨＳＴ変速機構３８によりエンジン３４の回転を変速させて、ミッションケース３１から車軸３５および出力軸３６に出力するので、前記走行装置２の走行速度と、刈取部４の前記ラグ回動式引起装置６の引起しや株元側穀稈搬送装置２２および穂先側穀稈搬送装置２３の搬送等の刈取部４の作業速度とを、同調させることができ、円滑な作業が行なえる。なお、刈取出力プーリ５６の回転は、株元側穀稈引継搬送装置２４、穂先側引継搬送装置２５、穀稈供給搬送装置２７等に伝達することもあり、伝達先は任意である。
（倒伏穀稈刈取作業）
倒伏穀稈刈取作業において、刈取部４のラグ回動式引起装置６の引起ラグ８の穀稈の引起し速度が遅いと、倒伏穀稈を充分に引起ししないままで根元を切断することになるので、刈取部４の作業速度は走行速度に対して相対的に早くすると円滑に行なえる。そのため、刈取部変速装置３０の倒伏用クラッチ４０を入にすると、入力軸３７の回転は、倒伏用伝達経路Ｂの倒伏用クラッチ４０を介して倒伏用歯車３９に伝達され、倒伏用歯車３９と中間小歯車４４との組合わせにより前記標準用伝達経路Ａよりも変速用中間軸４３は早く回転し、変速用中間軸４３の回転が、中間大歯車４５を介してミッション側入力歯車４７に伝達され、前記と同様に、刈取部出力プーリ５６より刈取部４に出力される。
【００３５】
したがって、刈取部４は、前記ラグ回動式引起装置６のみならず、掻込装置掻込装置１９、株元側穀稈搬送装置２２、穂先側穀稈搬送装置２３等の搬送速度を早くして、倒伏穀稈を円滑確実に刈取る。
【００３６】
前記の場合、ラグ回動式引起装置６の引起ラグ８の移動（上昇）速度は早くなるので、穀稈を引起すが、ラグ回動式引起装置６は前後方向の横軸回転の上下一対の歯車（図示省略）により引起ラグ８が機体進行方向に対して交差する方向に回動して穀稈を引起すから、機体進行方向に対して平行な縦方向の引起しおよび分草が充分でないことがあり、穀稈の先側が絡まったまま搬送されることがあるが、刈取部４の左右両側および引起ラグ８が折畳まれてケース７内を下動するラグ回動式引起装置６の非作用側にはラグ回動式分草装置１０を設けているから、ラグ回動式分草装置１０の左右方向の横軸回転の歯車１２および歯車１３により分草ラグ１５は、機体進行方向と並行に回動するので、縦方向に絡んだ穀稈をも分草して引起す。
【００３７】
しかして、刈取部４の刈取部フレーム５７の上部フレーム６０には伝動軸６７を設け、伝動軸６７の端部には摺動係合部材７６を摺動のみ自在に、伝達歯車７７を遊嵌状態にそれぞれ設けて補助分草引起入切クラッチ７５を構成しているから、前記刈取部変速装置３０の倒伏用クラッチ４０が入となると自動的にモータ７９を作動させてシフタ７８により補助分草引起入切クラッチ７５を入にする。したがって、操作性を向上させる。
【００３８】
この場合、前記刈取部変速装置３０の倒伏用クラッチ４０を、ＨＳＴ変速機構３８（主変速装置）の主変速レバーに取付たスイッチにより入切させる構成とすると、一層操作が容易となる。
【００３９】
しかして、前記刈取部入力プーリ６４より前記ラグ回動式引起装置６に至る回転伝達経路中には、引起ラグ８の回動の負荷を検出するラグ引起負荷検出装置８２を設けると、該引起負荷検出装置８２によりラグ回動式引起装置６の引起しに掛る負担を正確に検知して、倒伏モードとし、倒伏用クラッチ４０および補助分草引起入切クラッチ７５を入にし、負荷が減少すると、倒伏用クラッチ４０および補助分草引起入切クラッチ７５を切とし、標準用クラッチ４２を入にすることができ、操作性を向上させるのみならず、ラグ回動式引起装置６の引起ラグ８に掛る負荷を正確に検知できるので、倒伏モードにする対応も正確にする。
【００４０】
しかして、刈取部４の作業速度が所定速度以上に早くなると、かえって、悪影響をおよぼすことがあるので、出力軸５３の回転が所定回転数になると、自動的にエンジン側入力クラッチ５０を入にし、エンジン３４から出力軸５３に至る一定速度用伝達経路Ｃによりエンジン３４の一定回転が切替クラッチ軸４６より歯車５５、歯車５４を介して出力軸５３に伝達される。したがって、刈取部４の作業速度は一定保持される。
【００４１】
なお、前記刈取部変速装置３０および前記補助分草引起入切クラッチ７５の構成、前記各クラッチ４０、４２、４８、５０の入切させる組合わせや、ミッショケース３１内の副変速装置との関係、制御順序等は任意である。
【００４２】
以上のように、上部位置に設けた脱穀装置３と、前方位置に設けた固定式分草体５と、該分草体５の後方に設けたラグ回動式引起装置６と、該引起装置６の後部に設けたバリカン式刈刃２１を有し、該刈刃２１で刈取った穀稈を前記脱穀装置３に供給して脱穀するコンバインにおいて、前記固定式分草体５の前側にラグ回動式分草装置１０を設け、該分草装置１０の分草ラグ１５は、通常は回動しないが倒伏モードに切替えたときは動力伝達を受けて回動するように構成したコンバインにおける分草ラグの回転装置としたものであるから、倒伏穀稈刈取作業において、走行速度に対して刈取部作業速度を早くして円滑に作業し、ラグ回動式分草装置により倒伏穀稈を効率よく分草し、倒伏モードに切替えたときだけ回転するようにして倒伏穀稈がないときは殆ど作用しないように構成しているので、操作性も向上するという効果を奏する。
【図面の簡単な説明】
【図１】コンバインの側面図。
【図２】同平面図。
【図３】要部側面図。
【図４】概略を説明するブロック図。
【図５】刈取部変速装置の概略図。
【図６】刈取フレ−ムの断面図。
【図７】要部平面図。
【図８】要部断面図。
【図９】回路図。
【図１０】油圧回路図。
【図１１】他の実施例の回路図。
【図１２】ピタトマル（登録商標）自動制御のフロ−図。
【図１３】同操作レバ−の斜視図。
【図１４】同油圧回路図。
【図１５】同油圧回路図。
【図１６】同回路図。
【図１７】同説明図。
【符号の説明】
１機体フレ−ム
２走行装置
４刈取部
６ラグ式引起装置
２２株元側穀稈搬送装置
２３穂先側穀稈搬送装置
５８下部フレ−ム
５９側部フレ−ム
６０上部フレ−ム
６１支持パイプ
６２横筒
６３刈取上下シリンダ
６４刈取部入力プ−リ
６５伝動軸
６６伝動軸
６７伝動軸
８３刈取クラッチ
８５クラッチ操作レバ−（刈脱クラッチ操作レバ−）
９０取付伝動筒[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to a technical field related to a combine.
[0002]
[Prior art]
Conventionally, as disclosed in Japanese Patent Laid-Open No. 1-265820, a cutting portion is provided so as to be movable up and down by a cutting upper and lower cylinders, and a clutch operating lever for turning on and off the cutting clutch and the cutting portion are connected by an interlocking device. When mechanically interlocked and the mowing part is moved above a predetermined height, the clutch operating lever is moved to the clutch disengagement position to actuate the mowing clutch and stop driving the parts of the mowing part. In addition, a technique is known in which the timing for moving the clutch operation lever to the disengagement position can be changed or adjusted earlier or later.
[0003]
Accordingly, when the reaping device is raised to the non-working height when the side of the field is cut and turned, the reaping clutch is disengaged and the driving of the reaping portion is stopped. Thereby, while turning can be performed safely, the noise and vibration which generate | occur | produce from a cutting part can be reduced, and the improvement of the durability of a cutting part can also be anticipated.
[0004]
[Problems to be solved by the invention]
However, in the technique disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 1-265820, when the reaping part is moved up to a predetermined height or more, the clutch operating lever moves to the reaping clutch disengagement position. When resuming the cutting operation after lowering it to the working height, the clutch operating lever must be re-operated to the position where the cutting clutch is engaged, which has the disadvantage that the operability of the cutting clutch is poor and the working efficiency is lowered. .
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention takes the following technical means.
[0006]
That is, the aircraft Frame (1) A base portion of a support pipe (61) is attached to a horizontal cylinder (62) rotatably supported on the side, and a substantially horizontal center position of a laterally facing lower frame (58) is fixed to a lower portion of the support pipe (61). A vertical side frame (59) is attached to the left and right sides of the lower frame (58), and a horizontal upper frame (60) is attached to the top of the side frame (59). A plurality of mounting transmission cylinders (90) are provided on the upper frame (60), and a lug-type pulling device (6) is attached to the mounting transmission cylinder (90) and provided on the side of the horizontal cylinder (62). The transmission shaft (65) provided in the lower frame (58) and the transmission shaft (66) in the side frame (59) and the upper frame are rotated by the cutting portion input pulley (64). The transmission in the side frame (59) is configured to be transmitted to each part by a transmission shaft (67) provided in the frame (60). The upper frame is driven from the up-down direction intermediate part of the shaft (66) by driving the stock-side cereal conveyor device (22) and the tip-side cereal conveyor device (23) on the left and right sides of the cutting part (4). The lug-type pulling device (6) is configured to be driven from the transmission shaft (67) in (60) to form the cutting part (4), and the cutting part (4) is moved up and down by the cutting vertical cylinder (63). Even if the clutch operating lever (85) that is freely provided and engages and disengages the cutting clutch (83) is in the state of engaging the cutting clutch, the cutting unit (4) is moved up to the set height above the body frame (1). Then, with the clutch operating lever (85) kept in the state of engaging the cutting clutch, the cutting clutch (83) is automatically cut and operated so as to stop the driving of each part of the cutting unit (4). And a traveling device provided below the fuselage frame (1). B can perform horizontal control of the vehicle body (2) - provided the ring mechanism and the pitching mechanism, aircraft or by pitching mechanism when raising the vehicle height Frame (1) It is configured to automatically correct the set height of the cutting unit (4) for automatically cutting the cutting clutch (83) with respect to the machine frame (1) when the vehicle is moved forward and downward. It is a combine.
[0007]
As a result, when the cutting upper and lower cylinders 63 are shortened to bring the cutting unit 4 to a position lower than the set height and the clutch operating lever 85 is operated to the cutting clutch engaged state, the cutting unit input pulley provided on the side of the horizontal cylinder 62 is provided. 64 is rotated by the driving force of the engine, and this rotation causes the transmission shaft 65 provided in the lower frame 58, the transmission shaft 66 in the side frame 59, and the transmission shaft 67 provided in the upper frame 60. Is transmitted to each part, and the stock-side-side grain feeder 22 and the head-side grain feeder 23 on the left and right sides of the cutting unit 4 are driven from the middle in the vertical direction of the transmission shaft 66 in the side frame 59. In addition, the lug-type pulling device 6 and the tip side culm transporting device 23 at the left and right intermediate portions of the reaping part 4 are driven from the transmission shaft 67 in the upper frame 60 to perform the reaping work of the cereal. Become.
[0008]
In this cutting operation, in particular, the stock-side-side grain feeder 22 and the tip-side grain feeder 23 on the left and right sides of the cutting unit 4 are driven from the middle in the vertical direction of the transmission shaft 66 in the side frame 59. Therefore, it becomes possible to form an open space below the planter-side grain feeder 22 and the tip-side grain feeder 23 on the left and right sides of the cutting unit 4, and sawdust and weeds Less stagnation.
[0009]
Then, when the cutting upper and lower cylinders 63 are extended to move the cutting unit 4 above the set height with respect to the body frame 1, the cutting clutch 83 is kept in the state where the clutch operating lever 85 is in the cutting clutch engaged state. Automatically cuts and the driving of each part of the cutting unit 4 stops.
[0010]
For example, in a wet field, even if the combine traveling device sinks greatly or the vehicle body tilts forward and downward, the set height of the cutting unit 4 with respect to the machine frame 1 that automatically cuts the cutting clutch 83 is corrected. Thus, the ground height at which the driving of the cutting unit 4 stops can be made appropriate.
[0011]
In addition, even if the cutting unit 4 is moved upward with respect to the body frame 1 to a set height or higher, the clutch operation lever 85 remains in the state in which the cutting clutch is engaged, and thereafter, the cutting unit 4 is lowered to the working height. Therefore, when the cutting operation is resumed, it is not necessary to re-operate the clutch operation lever 85 to the cutting clutch engagement position.
[0012]
The traveling device 2 provided below the fuselage frame 1 is provided with a rolling mechanism and a pitching mechanism that can perform horizontal control of the vehicle body. The set height of the cutting unit 4 with respect to the machine frame 1 where the cutting clutch 83 is automatically turned off when it is lowered is automatically corrected, and only the cutting height adjustment is performed to move the cutting unit 4 up slightly. Then, the cutting part 4 does not stop.
[0013]
【The invention's effect】
According to the present invention, the clutch operating lever 85 is kept in the state in which the cutting clutch is engaged, by extending the cutting upper and lower cylinders 63 and moving the cutting unit 4 above the set height with respect to the machine body frame 1. Since the cutting clutch 83 can be automatically turned off to stop the driving of each part of the cutting unit 4, for example, the turning at the end of one-side cutting in the field can be performed safely, and generated from the cutting unit 4. Noise and vibration can be reduced, and durability of the cutting unit 4 can be improved.
[0014]
In addition, even if the cutting unit 4 is moved upward with respect to the body frame 1 to the set height or higher and the cutting clutch 83 is turned off, the clutch operation lever 85 remains in the state in which the cutting clutch is engaged. When the mowing unit 4 is lowered to the working height and the mowing operation is resumed, it is not necessary to re-operate the clutch operation lever 85 to the mowing clutch engagement position, and the operability is improved.
[0015]
Further, for example, in a wet field, when the combine traveling device sinks greatly or the vehicle body tilts forward and downward, the mowing unit 4 is greatly moved up with respect to the vehicle body so that the mowing unit 4 does not interfere with the field scene. Although the mowing operation must be performed, even when the mowing operation is performed by moving the mowing portion 4 higher than usual in this way, the set height of the mowing portion 4 with respect to the body frame 1 in which the mowing clutch 83 is automatically turned off. Since the height can be corrected, the ground height at which the driving of the cutting unit 4 is stopped is set to an appropriate level, and a state in which the driving of the cutting unit 4 stops during cutting operation can be avoided, and the cutting operation is performed smoothly. be able to.
[0016]
Further, when the harvesting unit 4 is moved down to the working height and the harvesting operation is performed, the stock side-side grain feeder 22 and the tip-side grain-carrying device 23 on the left and right sides of the harvesting unit 4, in particular, have side frames. Since the drive shaft 66 is driven from the middle in the vertical direction of the transmission shaft 59, the left and right side portions of the cutting unit 4 are opened to the lower side of the stock-side-side grain feeder 22 and the tip-side grain feeder 23. Space can be formed, stagnation of sawdust and weeds can be reduced, and cutting work can be performed smoothly.
[0017]
Also, when the vehicle height is raised or by the pitching mechanism Frame 1 Automatically adjusts the set height of the cutting unit 4 with respect to the machine body frame 1 to automatically cut the cutting clutch 83 when the vehicle is moved forward and downward, and adjusts the cutting height to move the cutting unit 4 up slightly. It is possible to prevent the mowing unit 4 from stopping only by simply.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. 1 is a combiner body frame, 2 is a traveling device provided below the body frame 1, 3 is a threshing device provided above the body frame 1, and 4 is a threshing device. 3 is a cutting part provided at the front position of 3. The mowing unit 4 is provided with a fixed type weed body 5 at the foremost position, and a lug rotation type pulling device 6 is provided behind the fixed type weed body 5. The lug-rotating pulling device 6 has a known structure, and in a longitudinal case 7, a pair of upper and lower gears (not shown) that rotate in the longitudinal axis in the front-rear direction, an endless chain hung around the gears, A plurality of pull-up lugs 8 attached to the chain at predetermined intervals so as to be raised and lowered, a guide for raising and lowering the pull-up lugs 8, a drive mechanism for the chain, and the like are provided. Therefore, the pulling lug 8 of the lug pivoting pulling device 6 rotates in a direction intersecting the aircraft traveling direction to raise the cereal, and when it is rotated upward, it is folded to move down in the case 7. , Protruding at the bottom of the case 7 and rising again.
[0019]
Thus, the left and right sides of the cutting part 4 and the lug 8 are folded, and the lug rotation type pulling device 6 that moves down in the case 7 has a lug rotation type that can assist weeding and raising on the non-operating side. A weeding device 10 is provided. The lug rotation type weeding device 10, like the lug rotation type pulling device 6, hangs an endless chain 14 around the laterally rotating gears 12, 13 provided in the case 11, A plurality of weed lugs 15 are attached to 14 at a predetermined interval so as to be raised and lowered, and a guide (not shown) for raising and lowering the weed lugs 15 and a drive mechanism (not shown) for the endless chain 14 are provided. The gear 12 and the gear 13 are configured to rotate in the horizontal direction in the left-right direction, and the weeding lug 15 is rotated in parallel with the aircraft traveling direction so as to perform weeding and raising of the cereal.
[0020]
19 is a scraping device, 20 is a star wheel, 21 is a cutting blade, 22 is a stock-side cereal carrying device, 23 is a tip-side cereal carrying device, 24 is a stock-side cereal takeover carrying device, and 25 is a tip side. A take-up conveying device, 26 is a rear-side focusing device, 27 is a cereal supply and conveying device, and 28 is a handling cylinder.
[0021]
Thus, the traveling speed of the traveling device 2 and the working speed of the cutting unit 4 are changed in synchronization with the traveling speed and the working speed running, and the cutting unit transmission 30 is provided in the rotation transmission path to the cutting unit 4. It is provided so that the working speed of the cutting unit 4 can be relatively increased with respect to the traveling speed, so that the fallen cereal can be cut smoothly. And the said lug rotation type weeding apparatus 10 is comprised so that it may operate | move when it is set to the lodging mode by the cutting part transmission 30. Hereinafter, a specific configuration will be described.
[0022]
Reference numeral 31 denotes a transmission case that transmits rotation to the traveling device 2. The case 31 is provided with an HST motor 32 of an HST transmission mechanism 38 (hydraulic continuously variable transmission hydrostatic transmission). The pump 33 is connected by an oil feed pipe, and the oil feed amount to the HST motor 32 by the HST pump 33 is changed steplessly, so that the rotation of the engine 34 is transmitted to the axle 35 while being steplessly changed.
[0023]
The transmission case 31 is provided with an output shaft 36 that transmits the rotation changed by the HST transmission mechanism 38 in the same manner as the transmission to the axle 35, and the rotation of the output shaft 36 is transmitted to the input shaft 37 of the reaper transmission 30. introduce. The input shaft 37 of the reaper transmission 30 is provided with an overturning clutch 40 for transferring rotation to the overturning gear 39 that is rotatable with respect to the input shaft 37, and with respect to the input shaft 37. A standard clutch 42 is provided to transfer the rotation transmitted to the standard gear 41, and either one of the overturning clutch 40 and the standard clutch 42 is turned off when the other is turned on.
[0024]
Further, the cutting unit transmission 30 is provided with a transmission intermediate shaft 43 provided in parallel with the input shaft 37. The transmission intermediate shaft 43 has an intermediate small gear 44 meshing with the overturning gear 39 and the standard gear. An intermediate large gear 45 that meshes with the gear 41 is fixed. A switching clutch shaft 46 is provided in the vicinity of the transmission intermediate shaft 43, and a transmission side input gear 47 that meshes with the intermediate large gear 45 is rotatably attached to the switching clutch shaft 46 so that the transmission side input gear 47 and the switching are switched. A mission side input clutch 48 is provided between the clutch shafts 46. Further, the switching clutch shaft 46 is provided with an engine side input gear 49 to which the rotation of the engine 34 is transmitted, and an engine side input clutch 50 is provided between the engine side input gear 49 and the switching clutch shaft 46. The mission side input clutch 48 and the engine side input clutch 50 are configured such that when either one is engaged, the other is disengaged, but normally the mission side input clutch 48 is configured to be “on”. When the work speed of the cutting unit 4 becomes faster than a predetermined speed, the engine-side input clutch 50 is automatically turned on to transmit a constant rotation to the cutting unit 4.
[0025]
In the vicinity of the switching clutch shaft 46, an output shaft 53 of the reaping portion transmission 30 is provided, and a gear 54 of the output shaft 53 and a gear 55 provided on the switching clutch shaft 46 are meshed. A cutting unit output pulley 56 that outputs to the cutting unit 4 or the like is provided.
[0026]
Therefore, in the cutting unit transmission 30, the standard transmission path A from the standard clutch 42 to the output shaft 53, the lodging transmission path B from the lodging clutch 40 to the output shaft 53, and the output shaft from the engine 34. A constant speed transmission path C reaching 53 is formed.
[0027]
Thus, the cutting unit 4 is configured by attaching the lug rotation type pulling device 6, the lug rotation type weeding device 10, the cutting blade 21 and the like to the cutting unit frame 57. Reference numeral 58 denotes a lower frame. A vertical side frame 59 is provided on the left and right sides of the lower frame 58, and upper portions of the left and right side frames 59 are connected by an upper frame 60. The lower part of the support pipe 61 is fixed, and a horizontal cylinder 62 is provided at the base of the support pipe 61, the horizontal cylinder 62 is rotatably supported on the machine body side, and is provided so as to be rotatable up and down by a cutting vertical cylinder 63.
[0028]
The horizontal cylinder 62 is provided with a cutting portion input pulley 64 corresponding to the cutting portion output pulley 56, and the rotation of the cutting portion input pulley 64 is provided in the transmission frame 65 and the side frame 59 provided in the lower frame 58. The power is transmitted to each part by a power transmission shaft 66 and a power transmission shaft 67 provided in the upper frame 60.
[0029]
The left and right ends of the upper frame 60 are provided with support members 68 and 69 in the front-rear direction. The support members 68 and 69 are provided with support tubes 70 and 71 in the left-right direction. Transmission shafts 72 and 73 are provided, and the case 11 and the gear 12 of the lug rotating weeding device 10 are attached to the support cylinders 70 and 71 and the transmission shafts 72 and 73, respectively. At the end of the transmission shaft 67 of the upper frame 60, there is provided an auxiliary weed pulling on and off clutch 75, and the auxiliary weed pulling on and off clutch 75 is used to turn on and off the operation of the lag rotating weeding device 10. As described above, the auxiliary weed pulling on / off clutch 75 is operated in correspondence with the overturning clutch 40 of the cutting unit transmission 30. 76 is a sliding engagement member provided on the transmission shaft 67 so as to be slidable freely, 77 is a transmission gear loosely fitted on the transmission shaft 67, 78 is a shifter, 79 is a motor for operating the shifter 78, and is a sliding engagement. The member 76, the transmission gear 77, the shifter 78, and the motor 79 constitute an auxiliary weeding pull-in / out clutch 75, and the motor 79 rotates the shifter 78 to connect and disconnect the sliding engagement member 76 and the transmission gear 77. . 80 is a gear provided on the transmission shafts 72 and 73, and 81 is a chain.
[0030]
Thus, in the rotation transmission path from the cutting part input pulley 64 to the lug rotation type pulling device 6, a pulling load detection device 82 for detecting the rotation load of the pulling lug 8 is provided, and the pulling load detection is performed. The device 82 is configured to control the operation of the standard clutch 42, the overturning clutch 40, and the auxiliary weeding pulling on / off clutch 75 in the cutting unit transmission 30. That is, in the case of a fallen cedar, the burden on the raising of the lug rotating type pulling device 6 becomes large, and when the pulling load detection device 82 detects this load, the fallen cereal work mode is set, and the falling clutch 40 When the auxiliary weed pulling on / off clutch 75 is turned on and the load is reduced, the lodging clutch 40 and the auxiliary weed pulling on / off clutch 75 are turned off, and the standard clutch 42 is turned on. The induced load detection device 82 is configured to detect torsion of the transmission shaft 66 in the side frame 59 by a sensor (strain gauge).
[0031]
Thus, in this embodiment, regarding the top and bottom of the cutting unit 4, even if both the cutting and releasing clutch operating levers (clutch operating levers) 85 that turn on and off the cutting clutch 83 and the threshing clutch 84 are in the ON state, the cutting unit 4. Pitatom (registered trademark) automatic control is performed to automatically cut the reaping clutch 83 and stop the reaping part 4 when the airframe is moved above the set height with respect to the body frame 1. Further, the traveling device 2 is provided with a rolling mechanism and a pitching mechanism for performing horizontal control of the vehicle body. When the vehicle height is raised or lowered by the rolling mechanism and / or the pitching mechanism, ) The set height of the cutting unit 4 for stopping the cutting unit 4 in automatic control is automatically corrected according to the state of the aircraft. That is, when the vehicle height is raised by the rolling mechanism and / or the pitching mechanism, or when the vehicle is moved forward and backward, the cutting portion is adjusted by the Pitatom (registered trademark) automatic control even when the cutting height is adjusted by slightly moving the cutting portion 4. 4 is prevented from stopping.
[0032]
In the figure, 86 is an intermediate shaft provided with a plurality of intermediate gear groups 87 constituting a constant speed transmission path C, 88 is an intermediate transmission shaft, 89 is an output pulley to the threshing section, and 90 is the lug-type pulling device 6. It is a mounting transmission cylinder to be mounted.
[0033]
Next, the operation will be described.
(Normal work)
The rotation of the engine 34 is transmitted to the HST pump 33, and the HST pump 33 shifts the oil supply amount to the HST motor 32 in a stepless manner to change speed and transmit the rotation to the axle 35 of the transmission case 31 to travel the aircraft. Let On the other hand, the rotation transmitted to the transmission case 31 via the HST motor 32 is transmitted to the input shaft 37 of the cutting unit transmission 30 via the output shaft 36, and is normally input by the standard clutch 42 which is turned on. 37 is transmitted to the standard gear 41, and the rotation of the standard gear 41 is transmitted to the mission side input gear 47 through the intermediate large gear 45 and is loosely fitted to the switching clutch shaft 46. Is transmitted to the switching clutch shaft 46 by the transmission side input clutch 48, and the rotation of the switching clutch shaft 46 is transmitted to the output shaft 53 via a gear 55 fixed to the switching clutch shaft 46 and a gear 54 fixed to the output shaft 53. Is transmitted through the standard transmission path A from the standard clutch 42 to the output shaft 53 and is output to the cutting unit 4 from the cutting unit output pulley 56.
[0034]
Then, the cutting part 4 is weeded by the fixed weed body 5, is raised by the lug rotation type pulling device 6, and the cereals raised by the lug rotation type pulling device 6 are separated by the lag rotary type weeding device 10. Grass, scraped by the scraping device 19 and cut by the cutting blade 21, the stock source of the harvested cereal is transported by the stock source side culm transport device 22, and the tip side is transported by the stalk side culm transport device 23, This cereal is handed over to the cereal supply and transport device 27 that supplies the threshing chamber of the threshing device 3 to the threshing chamber 3 by the stock source side culm inheriting and transporting device 24 and the tip side culm handing over and transporting device 25. In this case, the rotation of the engine 34 is shifted by the HST speed change mechanism 38 and output from the transmission case 31 to the axle 35 and the output shaft 36. Therefore, the traveling speed of the traveling device 2 and the lug rotation type of the cutting unit 4 are increased. The working speed of the cutting unit 4 such as the raising of the pulling device 6 and the conveyance of the stock-side-side culm transporting device 22 and the tip-side corn-shearing transporting device 23 can be synchronized, and a smooth operation can be performed. The rotation of the harvesting output pulley 56 may be transmitted to the stock-source-side grain culling take-up and transport device 24, the tip-side side take-up and transport device 25, the corn straw supply and transport device 27, and the transmission destination is arbitrary.
(Overlapping cereal harvesting work)
In the fallen culm cutting operation, when the pulling speed of the pulling lug 8 of the lug rotation type pulling device 6 of the cutting part 4 is slow, the root is cut without sufficiently raising the fallen pestle. Therefore, if the working speed of the cutting unit 4 is relatively high with respect to the traveling speed, it can be smoothly performed. Therefore, when the fall clutch 40 of the cutting unit transmission 30 is turned on, the rotation of the input shaft 37 is transmitted to the fall gear 39 via the fall clutch 40 of the fall transmission path B, and the fall gear 39 Due to the combination with the intermediate small gear 44, the transmission intermediate shaft 43 rotates faster than the standard transmission path A, and the rotation of the transmission intermediate shaft 43 is transmitted to the transmission side input gear 47 via the intermediate large gear 45. In the same manner as described above, the output is output from the cutting unit output pulley 56 to the cutting unit 4.
[0035]
Therefore, the cutting unit 4 increases not only the lug rotation type pulling device 6 but also the conveying speed of the scraping device scraping device 19, the stock source side culm conveying device 22, the tip side culm conveying device 23, and the like. Then, cut down the overgrown grains smoothly and reliably.
[0036]
In the above case, the moving (raising) speed of the pulling lug 8 of the lug rotating type pulling device 6 is increased, so that the cereal is caused. The lug rotating type pulling device 6 is a pair of upper and lower rotary shafts rotating in the front-rear direction. The gear lug (not shown) causes the lug 8 to rotate in the direction intersecting the aircraft traveling direction to cause the cereals to be raised, so that the vertical pulling and weeding parallel to the aircraft traveling direction are sufficient. In some cases, the front side of the cereal tangles may be conveyed while being entangled, but the left and right sides of the cutting part 4 and the pulling lug 8 are folded and the lug rotating pulling device 6 moves down in the case 7 Since the lug-rotating weeding device 10 is provided on the non-acting side, the weeding lug 15 is moved forward by the laterally rotating gear 12 and the gear 13 of the lug-rotating weeding device 10. Since it rotates in parallel with the direction, it also causes cereals entangled in the vertical direction to be weeded.
[0037]
The transmission frame 67 is provided on the upper frame 60 of the cutting unit frame 57 of the cutting unit 4, and the transmission gear 77 is loosely fitted to the end of the transmission shaft 67 so that the sliding engagement member 76 can be slid freely. Since the auxiliary weed pull-in / out clutch 75 is provided in each state, the motor 79 is automatically actuated by the shifter 78 when the fall clutch 40 of the cutting unit transmission 30 is engaged. The pulling on / off clutch 75 is turned on. Therefore, operability is improved.
[0038]
In this case, the operation can be further facilitated by adopting a configuration in which the inclining clutch 40 of the cutting unit transmission 30 is turned on and off by a switch attached to the main transmission lever of the HST transmission mechanism 38 (main transmission).
[0039]
Therefore, if a lug pulling load detecting device 82 for detecting the rotation load of the pulling lug 8 is provided in the rotation transmission path from the reaping portion input pulley 64 to the lug rotating pulling device 6, the pulling motion is detected. When the load detecting device 82 accurately detects the load on the raising of the lug rotation type pulling device 6 to enter the fall mode, the fall clutch 40 and the auxiliary weed pulling on / off clutch 75 are turned on, and the load decreases. The standard clutch 42 can be turned on by disengaging the overturning clutch 40 and the auxiliary weeding pulling on / off clutch 75, and not only improves the operability but also the pulling lug 8 of the lug rotation type pulling device 6. Since the load on the vehicle can be detected accurately, the response to the lodging mode is also made accurate.
[0040]
Therefore, if the working speed of the cutting unit 4 becomes higher than the predetermined speed, it may adversely affect the engine. Therefore, when the rotation of the output shaft 53 reaches the predetermined speed, the engine side input clutch 50 is automatically turned on. The constant rotation of the engine 34 is transmitted from the switching clutch shaft 46 to the output shaft 53 via the gear 55 and the gear 54 by the constant speed transmission path C from the engine 34 to the output shaft 53. Therefore, the working speed of the cutting unit 4 is kept constant.
[0041]
It should be noted that the configuration of the cutting part transmission 30 and the auxiliary weed pulling on / off clutch 75, the combination in which the clutches 40, 42, 48, 50 are turned on and off, and the relationship with the auxiliary transmission in the mission case 31. The control order is arbitrary.
[0042]
As described above, the threshing device 3 provided at the upper position, the fixed type weed body 5 provided at the front position, the lug rotation type pulling device 6 provided behind the weed body 5, and the pulling device 6 The combine which has the clipper type cutting blade 21 provided in the rear part, supplies the threshing rice harvested by the cutting blade 21 to the threshing device 3 and threshes, and the lug rotation type to the front side of the fixed herbaceous body 5 A weeding device 10 is provided, and the weeding lug 15 of the weeding device 10 does not normally rotate, but when switched to the lodging mode, the weeding lug in the combine is configured to receive power transmission and rotate. Because it is a rotating device, in the harvesting of cereals, the cereals are efficiently sown by the lag rotating type weeding device. Rotate grains so that they rotate only when switching to lodging mode Since it is not configured to act almost absence, the effect of improving operability.
[Brief description of the drawings]
FIG. 1 is a side view of a combine.
FIG. 2 is a plan view of the same.
FIG. 3 is a side view of an essential part.
FIG. 4 is a block diagram for explaining the outline.
FIG. 5 is a schematic view of a reaping part transmission.
FIG. 6 is a cross-sectional view of a cutting frame.
FIG. 7 is a plan view of a main part.
FIG. 8 is a cross-sectional view of a main part.
FIG. 9 is a circuit diagram.
FIG. 10 is a hydraulic circuit diagram.
FIG. 11 is a circuit diagram of another embodiment.
FIG. 12 is a flow chart of Pitatom (registered trademark) automatic control.
FIG. 13 is a perspective view of the operation lever.
FIG. 14 is a hydraulic circuit diagram of the same.
FIG. 15 is a hydraulic circuit diagram thereof.
FIG. 16 is a circuit diagram of the same.
FIG. 17 is an explanatory diagram of the same.
[Explanation of symbols]
1 Airframe frame
2 Traveling devices
4 mowing parts
6 Lug-type pulling device
22 stock source side grain feeder
23 Ear side grain feeder
58 Lower frame
59 Side Frame
60 Upper frame
61 Support pipe
62 Horizontal cylinder
63 Cutting upper and lower cylinder
64 Cutting section input pulley
65 Transmission shaft
66 Transmission shaft
67 Transmission shaft
83 Mowing clutch
85 Clutch operation lever (cutting / clutch release lever)
90 Mounting transmission cylinder

Claims

A base portion of a support pipe (61) is attached to a horizontal cylinder (62) rotatably supported on the machine body frame (1) side, and a laterally lower frame (58) is substantially left and right below the support pipe (61). The center position is fixed, vertical side frames (59) are attached to the left and right sides of the lower frame (58), and the horizontal upper frame is attached to the top of the side frame (59). The frame (60) is connected, a plurality of mounting transmission cylinders (90) are provided on the upper frame (60), a lug-type pulling device (6) is mounted on the mounting transmission cylinder (90), and the horizontal cylinder ( 62) The rotation of the cutting portion input pulley (64) provided on the side of the transmission shaft (65) provided in the lower frame (58) and the transmission shaft (66 in the side frame (59)). ) And a transmission shaft (67) provided in the upper frame (60). The stock-source side culm conveying device (22) and the tip side culm conveying device (23) on the left and right sides of the cutting unit (4) are driven from the intermediate portion in the vertical direction of the transmission shaft (66) in the drum (59). In addition, the lug-type pulling device (6) is configured to be driven from the transmission shaft (67) in the upper frame (60) to form a cutting part (4), and the cutting part (4) is moved up and down. Even if the clutch operating lever (85) which is provided so as to be movable up and down by the cylinder (63) and engages and disengages the cutting clutch (83) is in the state of engaging the cutting clutch, the cutting unit (4) is attached to the body frame (1). When it is moved above the set height, the reaping clutch (83) is automatically disengaged while the clutch operating lever (85) is in the state of engaging the reaping clutch to drive each part of the reaping portion (4). The aircraft frame (1) B can perform horizontal control of the vehicle body to the traveling device (2) provided towards - providing a ring mechanism and the pitching mechanism, or by pitching mechanism when raising the vehicle height when the body frame (1) to Maekudari The combine configured to automatically correct the set height of the cutting unit (4) for automatically cutting the cutting clutch (83) relative to the body frame (1).