JP3570014B2 - Combine steering and turning control device - Google Patents

Combine steering and turning control device Download PDF

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Publication number
JP3570014B2
JP3570014B2 JP15427795A JP15427795A JP3570014B2 JP 3570014 B2 JP3570014 B2 JP 3570014B2 JP 15427795 A JP15427795 A JP 15427795A JP 15427795 A JP15427795 A JP 15427795A JP 3570014 B2 JP3570014 B2 JP 3570014B2
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Japan
Prior art keywords
steering
gear
clutch
turning
revolving
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JP15427795A
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Japanese (ja)
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JPH0947A (en
Inventor
勝野  志郎
孝司 伊藤
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Iseki and Co Ltd
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Iseki and Co Ltd
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  • Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
  • Control Of Transmission Device (AREA)
  • Guiding Agricultural Machines (AREA)
  • Harvester Elements (AREA)

Description

【発明の属する技術分野】
【0001】
この発明は、コンバインの操向旋回制御装置に関し、ブレーキ旋回,緩旋回の各旋回モードを適時切り替えて作業時の旋回を行うもの等に利用できる。
【従来の技術】
【0002】
コンバインの作業時に、圃場端の枕地等において操向旋回を行うときに、ブレーキ制動による標準的な旋回を行うブレーキ旋回モードと、回転差による緩やかな旋回を行う緩旋回モードとを、圃場の条件に合わせて適時切り替えて走行するもの等については、既に周知である。
【発明が解決しようとする課題】
【0003】
しかし、このような緩旋回モードによるブレーキ制動を行わない操向旋回においては、どうしても旋回半径が大きくなるので、この大きな旋回半径により刈取条の条合わせ等が阻害されたり、極端な場合には危険を伴うこともある。このため、瞬時に緩旋回モードからブレーキ旋回モードに切り替える必要があるが、従来では、この切り替えを行うには、旋回モードを切り替える旋回モード切替レバーの操作が必要であり、瞬時の切り替えを行い難く、作業の進行や危険の回避に支障をきたしかねない。また、この切り替え時に、その都度旋回モード切替レバーの操作を行うことは大変に面倒で煩わしいものであった。
【0004】
そこでこの発明は、緩旋回モードによる操向旋回時に、パワステレバーに設けた切替スイッチを操作したときは、緩旋回モードからブレーキ旋回モードへ瞬時に切り替わるようにする。
【課題を解決するための手段】
【0005】
この発明は、操向軸21に軸止する二連の操向センタギヤ33の両側面に噛み合い用の左右のクラッチ爪33b,33bを各々設け、該左右のクラッチ爪33b,33bに近接させて左右の操向クラッチ23,23を各々遊転軸承すると共に該左右の操向クラッチ23,23のギヤ部23a,23aの側面に前記操向センタギヤ33の両側面の左右のクラッチ爪33b,33bと噛み合うクラッチ爪23b,23bを設け、該左右の操向クラッチ23,23におけるクラッチ爪23b,23bとは反対側の延長部分に左右の操向ブレ−キ2,2を係合して設け、前記二連の操向センタギヤ33の片方の小径ギヤ33aと旋回軸22に遊転軸承した緩旋回ギヤ35と減速軸36に遊転軸承した二連のスピン中間ギヤ37の一方の小径ギヤ37aとを各々噛み合い連動させると共に、前記スピン中間ギヤ37の他方の大径ギヤ37bと前記旋回軸22に遊転軸承したスピン旋回ギヤ38とを噛み合い連動させ、前記緩旋回ギヤ35とスピン旋回ギヤ38との間に、両側面にクラッチ爪39a,39aを設けた切替クラッチ39を配置し、該切替クラッチ39の側面の爪クラッチ39aと、前記緩旋回ギヤ35の側面に設けたクラッチ爪35a又はスピン旋回ギヤ38の側面に設けたクラッ爪38aの何れか一方とを各別に噛み合い接続させられるように構成し、前記左右の操向クラッチ23,23のギヤ部23a,23aと減速軸36に遊転軸承する左右の二連の操向伝動ギヤ41,41とを各々噛み合い連動させ、前記旋回軸22に左右の旋回伝動ギヤ42,42を各々遊転軸承し、該旋回伝動ギヤ42,42を回転させる左右の旋回クラッチ50,50を設け、該左右の旋回伝動ギヤ42,42と、旋回中間軸43に遊転軸承した左右の二連の旋回中間ギヤ44,44とを各々噛み合い連動させ、該左右の旋回中間ギヤ44,44における小径ギヤ44a,44aと、前記左右の操向伝動ギヤ41,41とを各々噛み合い連動させ、該左右の二連の操向伝動ギヤ41,41における小径ギヤ41a,41aと、左右のホイル軸45,45に設けた左右のホイルギヤ46,46とを各々噛み合い連動させてギヤ伝動機構を構成し、旋回モ−ド切替レバ−3によって前記切替クラッチ39を作用させてブレ−キ旋回モ−ドAと緩旋回モ−ドBとスピン旋回モ−ドCとの各旋回モ−ドに切り替えられるように構成し、車体20の左右操向及び旋回を行わせるレバ−4を傾斜操作した時にONする左右の補助スイッチ5a,5aを設け、前記旋回モ−ド切替レバ−3によって緩旋回モ−ドBに切り替えて、前記レバ−4の傾斜操作によって補助スイッチ5aがONした状態のときに、切替スイッチ5を操作することによって前記旋回モ−ド切替レバ−3による切替操作を行うことなく緩旋回モ−ドBからブレ−キ旋回モ−ドAに切り替わるように構成したことを特徴とするコンバインの操向旋回制御装置の構成とする。
【0006】
これにより、コンバインの作業時に圃場端の枕地等において、旋回モードを旋回モード切替レバー3により緩旋回モードBに切り替え、レバー4を左又は右へ傾斜操作したときは、操向側の操向クラッチを切ると同時に、操向側のクロ−ラの回転比を変えて、非操向側のクロ−ラに対して緩速駆動させる比較的大きな旋回半径の操向旋回を行うが、この緩旋回では旋回半径が大きすぎて旋回途中において何等かの不都合が生じるようなときには、前記レバー4に設けた切替スイッチ5を操作することによって、旋回モード切替レバー3の切り替えを行うことなく、瞬時に緩旋回モードBからブレーキ旋回モードAへ切り替え、操向側の操向クラッチの切りと操向ブレーキ2の制動とにより、比較的小さな旋回半径の操向旋回に移行することができる。
【発明の効果】
【0007】
この発明によると、レバー4の傾斜操作による操向旋回時に、切替スイッチ5の操作により、旋回モード切替レバー3の切替操作を不要として、緩旋回モードBによる比較的大きな旋回半径からブレーキ旋回モードAによる比較的小さな旋回半径に、瞬時に切り替えることができるので、刈取条の条合わせ等の齟齬により作業の進行を妨げられるようなこともなく、極端な場合における危険からも回避が可能であると共に、モード切り替えの都度、旋回モード切替レバー3の操作を必要とする煩わしさからも解放できる。
【発明の実施の形態】
【0008】
以下に、この発明の実施の形態を図面に基づいて説明する。
【0009】
コンバインの車台6の下部側に土壌面を走行する左右一対のクロ−ラ1を有する走行装置7を配設し、該車台6上にフィ−ドチェン8に挟持して供給される穀稈を脱穀し、この脱穀された穀粒を選別回収して一時貯留する穀粒タンク9を備えた脱穀装置10を載設する。この脱穀装置10の前方側に前端位置から立毛穀稈を分草する分草体11と、分草された穀稈を引き起こす引起部12と、引き起こされた穀稈を刈り取る刈刃部13と、この刈り取られた穀稈を後方へ搬送して該フィ−ドチェン8へ受渡しする穀稈搬送部14とを有する刈取装置15を、該車台6の前端部へ刈取懸架部16によって上下回動自在に懸架支持すると共に、土壌面に対して昇降自在に設ける。該刈取装置15の一側に、コンバインの操作制御を行う操作装置17と、この操作のための操作席18とを設け、この操作席18の下方にエンジン19を搭載し、これらの後方側に該穀粒タンク9を配置すると共に、該走行装置7,脱穀装置10,刈取装置15,操作装置17,エンジン19等によってコンバインの車体20を構成する。
【0010】
該車台6の前端側に走行用ミッションケース24を装架し、このミッションケース24にギヤ伝動機構を内装して設ける。このギヤ伝動機構は、図2,3,4に示す如く、第1軸としての入力軸25に軸回転する二連の変速ギヤ26に、シフタステー27によって左右摺動可能に軸承する変速シフタ28を嵌挿するシフタ溝26aを設け、この変速シフタ28の作用によって、該変速ギヤ26と、第2軸としてのカウンタ軸29に軸止する高速ギヤ30と低速ギヤ31とを、各々切り替え噛み合い連動させ、該カウンタ軸29に横並びに軸止した変速伝動ギヤ32と、第3軸としての操向軸21に軸止する二連の操向センタギヤ33とを、カウンタ軸29による高速側と低速側との変速動力を伝達させるべく噛み合い連動させる。
【0011】
該操向センタギヤ33の両側面に噛み合い用のクラッチ爪33bを各々設け、この左右のクラッチ爪33bに近接させて、ギヤ部23aの側面に該クラッチ爪33bと噛み合い接続するクラッチ爪23bを有した、左右の操向クラッチ23を各々遊転軸承すると共に、この左右の操向クラッチ23には、各々クラッチ爪23bの反対側の延長部分に左右の操向ブレーキ2を係合して設けると共に、この延長部分に操向クラッチ23のリターン用ばね48を内装し、該ギヤ部23aと延長部分との間に、各々操向クラッチ23を左右に摺動させる左右の操向シフタ34を嵌挿するシフタ溝23cを設け、この左右の操向シフタ34をシフタ軸34aの回動により作用させ、該両クラッチ爪33bと23bとを噛み合いさせて、操向クラッチ23が入りとなる側と、逆に、該両クラッチ爪33bと23bとを切り離して、操向クラッチ23が切りとなり、同時に操向ブレーキ2が制動される側とに作用させる構成としている。
【0012】
該二連の操向センタギヤ33の片方の小径ギヤ33aと、第6軸としての旋回軸22に遊転軸承した緩旋回ギヤ35、及び第4軸としての減速軸36に遊転軸承した二連のスピン中間ギヤ37の一方の小径ギヤ37aとを各々噛み合い連動させると共に、このスピン中間ギヤ37の他方の大径ギア37bと、該旋回軸22に遊転軸承したスピン旋回ギヤ38とを噛み合い連動させ、該緩旋回ギヤ35とスピン旋回ギヤ38との間に、両側面にクラッチ爪39aを設けた切替クラッチ39を配置し、この切替クラッチ39に、該クラッチ39を左右に摺動させる切替シフタ40を嵌挿するシフタ溝39bを設け、この切替シフタ40の作用により該両クラッチ爪39aと、該両旋回ギヤ35及び38の各側面に設けたクラッチ爪35a及び38aとの何れか一方とを、各別に噛み合い接続させる構成としている。
【0013】
前記左右の操向クラッチ23の各ギヤ部23aと、該減速軸36に遊転軸承する左右の二連の操向伝動ギヤ41とを各々噛み合い連動させると共に、前記旋回軸22に左右の旋回伝動ギヤ42を各々遊転軸承し、この旋回伝動ギヤ42を軸回転させる左右の旋回クラッチ50を各々軸止させ、該左右の旋回伝動ギヤ42と、第7軸としての旋回中間軸43に各々遊転軸承した左右の二連の旋回中間ギヤ44とを各々噛み合い連動させ、この左右の旋回中間ギヤ44の片方の小径ギヤ44aと、該左右の操向伝動ギヤ41とを各々噛み合い連動させる構成としている。
【0014】
該左右の二連の操向伝動ギヤ41の片方の小径ギヤ41aと、第5軸としての左右のホイル軸45の一端部に軸止した、左右のホイルギヤ46とを各々噛み合い連動させ、該左右のホイル軸45の他端部に、前記左右のクローラ1を駆動させる左右の駆動輪47を各々軸止して構成する。
【0015】
ブレーキ旋回モードA・緩旋回モードB・スピン旋回モードCの各旋回モードを切り替える切替クラッチ39を作用させる旋回モード切替レバー3と、図5に示す如く、このレバー3が各々緩旋回モードB又はスピン旋回モードCの位置のときに係合してONさせる弁切替スイッチ49と、車体20の進行方向の左右操向及び旋回を行わせるパワステレバー4と、このレバー4に係合してその操作角度を検出するポジションセンサ52と、図6に示す如く、該レバー4の傾斜操作時にその左右両端位置において各々接当ONするよう係合配置した左右の補助スイッチ5aがON状態のときに操作することにより、緩旋回モードBからブレーキ旋回モードAに切り替える該レバー4の握り部4aに設けた押しボタン形式の切替スイッチ5とを、各々前記操作装置17の一側に配置して構成する。
【0016】
車速を検出する車速センサ51と、左右の操向クラッチ23の切り状態を検出する左右のクラッチセンサ65とを、前記ミッションケース24の伝動経路に係合して配設構成する。
【0017】
CPUを主体として各自動回路の演算制御を行うコントローラ53を該操作装置17の近傍に設けると共に、図7に示す如く、このコントローラ53の入力側に、前記切替スイッチ5及び左右の補助スイッチ5a,車速センサ47,弁切替スイッチ49,ポジションセンサ52,左右のクラッチセンサ65等を各々接続すると共に、出力側に、左右の操向クラッチ23と操向ブレーキ2用の操向シフタ34を作用させる操向クラッチ電磁弁54,左右の旋回クラッチ50を作動させる旋回クラッチ電磁弁55,左右の操向クラッチ23の切りに伴う操向ブレーキ2のブレーキ出力を切り替え制御する圧抜き電磁弁56等を各々接続して構成する。
【0018】
該左右の操向クラッチ23を入り切りさせる操向油圧回路Sと、左右の旋回クラッチ50を入り切りさせる旋回油圧回路Tとを各々別系統の回路構成とし、該操向油圧回路Sは、図8に示す如く、油圧無段変速装置57及び前記刈取装置15その他の油圧系統を作用させる同一の油タンク58から、油圧ポンプ59により供給される圧油を該操向クラッチ電磁弁54を経由して、左右の操向クラッチ23と操向ブレーキ2を作用させる左右の操向シリンダ60の一方側に、送油又は返油可能に切り替え接続させると共に、この左右の操向シリンダ60の他方側から、該圧抜き電磁弁56と可変絞り弁61及び固定絞り62とを介して該油タンク58に返油するよう接続させる。
【0019】
この接続により、ブレーキ旋回モードAでは、前記旋回モード切替レバー3の操作に伴う弁切替スイッチ49のOFFにより、圧抜き電磁弁56をパワステ回路側へ接続し、パワステレバー4の操作によるポジションセンサ52の検出値ににより、操向クラッチ電磁弁54及び可変絞り弁61によって、操向クラッチ23の切りから操向ブレーキ2の制動までの作用を行わせる。緩旋回モードB又はスピン旋回モードCでは、該旋回モード切替レバー3の切り替え操作に伴う弁切替スイッチ49のONにより、圧抜き電磁弁56をバイパス回路側へ切り替え接続し、パワステレバー4の操作によるポジションセンサ52の検出値により、操向クラッチ電磁弁54及び固定絞り62によって、操向クラッチ23を切りのみで保持し、操向ブレーキ2の制動は行わせない構成とする。
【0020】
該旋回油圧回路Tは、図9に示す如く、前記ミッションケース24から油圧ポンプ63により供給される圧油を、該旋回クラッチ電磁弁55を経由して各々左右の旋回クラッチ50を作用させる左右の旋回シリンダ64に、送油又は返油可能に切り替え接続して構成させる。
【0021】
走行用ミッションケース24におけるギヤ伝動は、入力軸25へ動力が伝達され、この入力軸25の二連の変速ギヤ26を左右摺動させて、カウンタ軸29に軸回転する高速ギヤ30へ連動したときは高速に、低速ギヤ31へ連動させたときは低速に変速させ、この変速された動力を、同じくカウンタ軸29に軸回転する変速伝動ギヤ32によって、操向軸21に軸回転する操向センタギヤ33へ連動させる。
【0022】
旋回モード切替レバー3をブレーキ旋回モードAに切り替え、例えば、パワステレバー4を左へ傾斜操作したときは、バイパス回路側へ切り替わった圧抜き電磁弁56を介して、ポジションセンサ52の検出値に比例して、操向クラッチ電磁弁54と可変絞り弁61とによって、左の操向シリンダ60を作動させ、左の操向シフタ34の作用により、操向センタギヤ33のクラッチ爪33bと、左の操向クラッチ23のクラッチ爪23bとが切りとなって、操向軸21に軸回転している操向クラッチ23を遊転させると同時に、左の操向ブレーキ2により制動させる。
【0023】
この制動により、該操向クラッチ23のギヤ部23aと連動する減速軸36に遊転させた、二連の左の操向伝動ギヤ41の回転を停止させると共に、該操向センタギヤ33により伝動を継続している、右の操向クラッチ23から右の操向伝動ギヤ41へ、更に、この操向伝動ギヤ41の片方の小径ギヤ41aから右のホイルギヤ46を経て右の駆動輪47へ連動させる。この右の駆動輪47による右のクロ−ラ1の駆動と、前記の左の操向クラッチ23の制動により、ブレーキング状態の左のクロ−ラ1とによって、左側へのブレーキ旋回を行わせる。
【0024】
該旋回モード切替レバー3を緩旋回モードBに切り替え、操向センタギヤ33の片方の小径ギヤ33aから連動された、旋回軸22に遊転する緩旋回ギヤ35のクラッチ爪35aと、軸回転する切替クラッチ39のクラッチ爪39aとを、切替シフタ40による噛み合い接続により、緩旋回ギヤ35を軸回転させると共に、弁切替スイッチ49をONさせた状態において、例えば、パワステレバー4を左へ傾斜操作したときは、バイパス回路側へ切り替わった圧抜き電磁弁56を介して、該ポジションセンサ52の検出値により、操向クラッチ電磁弁54と固定絞り62とによって左の操向シリンダ60を作動させ、左の操向シフタ34の作用により操向センタギヤ33のクラッチ爪33bと、左の操向クラッチ23のクラッチ爪23bとが切りとなって、操向軸21に軸回転している操向クラッチ23を遊転させる。
【0025】
この遊転をクラッチセンサ65により検出したときは、この操向クラッチ23の切りを保持させると共に、操向ブレーキ2を制動させない状態において、旋回クラッチ電磁弁55により左の旋回シリンダ64を介して左の旋回クラッチ50を入りとして、緩旋回ギヤ35から、軸遊転する左の旋回伝動ギヤ42を軸回転させ、この旋回伝動ギヤ42から、旋回中間軸43に遊転する左の二連の旋回中間ギヤ44を介して、前記の操向クラッチ23の切りにより軸遊転する左の二連の操向伝動ギヤ41へ連動し、この操向伝動ギヤ41の小径ギヤ41aから左のホイルギヤ46を経て、左の駆動輪47を駆動して左のクロ−ラ1を、右のクロ−ラ1に対して緩駆動させることによって、左側への緩旋回を行わせる。
【0026】
該旋回モード切替レバー3をスピン旋回モードCに切り替え、操向センタギヤ33の片方の小径ギヤ33aから、減速軸36に遊転する二連のスピン中間ギヤ37の小径ギヤ37aに連動すると共に、その大径ギヤ37bから反転させて、旋回軸22に遊転するスピン旋回ギヤ38へ連動させ、この反転によって、緩旋回ギヤ35に対して逆回転するスピン旋回ギヤ38のクラッチ爪38aと、軸回転する切替クラッチ39のクラッチ爪39aとを、切替シフタ40による噛み合い接続により、スピン旋回ギヤ38を軸回転させると共に、該弁切替スイッチ49をONさせた状態において、例えば、パワステレバー4を左へ傾斜操作したときは、バイパス回路側へ切り替わった圧抜き電磁弁56を介して、該ポジションセンサ52の検出値により、操向クラッチ電磁弁54と固定絞り62とによって左の操向シリンダ60を作動させ、左の操向シフタ34の作用により操向センタギヤ33のクラッチ爪33bと、左の操向クラッチ23のクラッチ爪23bとが切りとなって、操向軸21に軸回転している操向クラッチ23を遊転させる。
【0027】
この遊転をクラッチセンサ65により検出したときは、この操向クラッチ23の切りを保持させると共に、操向ブレーキ2を制動させない状態において、旋回クラッチ電磁弁55により左の旋回シリンダ64を介して左の旋回クラッチ50を入りとして、スピン旋回ギヤ38から、軸遊転する左の旋回伝動ギヤ42を軸回転させ、この旋回伝動ギヤ42から、旋回中間軸43に遊転する左の二連の旋回中間ギヤ44を介して、前記の操向クラッチ23の切りにより軸遊転する左の二連の操向伝動ギヤ41へ連動し、この操向伝動ギヤ41の小径ギヤ41aから左のホイルギヤ46を経て、左の駆動輪47を駆動して、左のクロ−ラ1を、右のクロ−ラ1に対して逆回転駆動させることにより、左側へのスピン旋回を行わせる。
【0028】
このように、旋回モードを該旋回モード切替レバー3により、緩旋回モードBに切り替えて操向旋回を行うときは、ブレーキ制動を行わないため、どうしても旋回半径が大きくなり、旋回終了時の刈取条の条合わせが数回のやり直しを行う等、大変な手間を必要として作業の進行が阻害されたり、最悪の場合には危険な場面に遭遇することもありうるので、このときには、該パワステレバー4の傾斜操作端部への操作によって補助スイッチ5aがONしているときに、該レバー4に設けた切替スイッチ5をONさせることにより、旋回クラッチ50を切ると同時に圧抜き電磁弁56をパワステ回路側へ切り替えて、旋回モード切替レバー3による切替操作を行うことなく、瞬時にブレーキ旋回モードAへの切り替えによる小さな旋回半径によって、作業の進行や危険の回避を阻害されず円滑な操向旋回を行いうるものである。
【0029】
また、パワステレバーによる旋回モードの切り替えを、上記と異なる実施例として、図10に示す如く、パワステレバー66の軸心に上下動自在のレバーピン66aを設け、このレバーピン66aを常時下動させるピンばね66bにより押圧させ、該レバー66の握り部66cに設けた押しボタン66dの押圧操作により、レバーピン66aをピンばね66bに抗して上動させる構成とし、該レバー66の傾斜操作角の通常操作域αに対して各々左右両側に緊急操作域βを設け、この両操作域α,βを区切るため、該レバー66を回動自在に支承するレバーステー66eに、通常操作域αの終点と緊急操作域βの終点とに各々ピン孔a及びbを設け、この各ピン孔a,bにレバーピン66aが自動的に嵌挿ロックされて該レバー66を各操作域で停止させる構成とする。
【0030】
これらの構成により、緩旋回モードBにより操向旋回を行っているときに、緊急にブレーキ旋回モードAに切り替える必要があるときは、該パワステレバー66を、その押しボタン66dを押圧しながら通常操作域αを越えて緊急操作域βへ傾斜操作することにより、この操作域βの角度をポジションセンサ52により検出して、上記と同様に、瞬時に緩旋回モードBからブレーキ旋回モードAに切り替えることができる。
【0031】
なお、上記の旋回モードの緊急切替手段については、本発明の要旨を逸脱しない限り、如何なる手段を用いるとも差し支えないものである。
【0032】
また、図11,12に示す如く、前記左右の操向クラッチ23の入り切りを作用させる左右の操向シフタ34を、左右のシフタ軸34aに各々軸止し、この左右のシフタ軸34aをミッションケース24の前面壁24aと後面壁24bによって各々回動自在に支承させると共に、該左右のシフタ軸34aの前端部を該前面壁24aから各々外方へ突出させ、この左右の突出部34bの該ケース24への近接側位置に左右の従動アーム67を各々上方側に位置させて固着し、この左右の従動アーム67の上端部近傍に駆動ピン67aを各々前側に向けて固着して構成する。
【0033】
該左右の突出部34bの各従動アーム67より前側の位置に左右のクラッチアーム68を軸承し、この左右のクラッチアーム68の上端部近傍に各々設けた長孔68aに該駆動ピン67aを嵌入させ、該左右のクラッチアーム68のシフタ軸34aより下方の各内側面に、前記左右の操向シリンダ60のピストンにより押圧作用させる間隙調節用の調節ネジ68bを設けると共に、この調節ネジ68b部とシフタ軸34a部との中間位置の各外側面に、前記左右のクラッチセンサ65を接当検出させる各検出板68cを設けて構成する。
【0034】
該左右の従動アーム67の一方のアーム67の上端折曲部67bに、前記操作装置17のフロア17a上に設けたペダル69から接続されるワイヤ70のアウタ側を固定し、このワイヤ70のインナ側を他方のアーム67の駆動ピン67aの先端部に回動可能に係止して構成する。
【0035】
これらの構成により、操向シリンダ60の作用によりクラッチアーム68を回動させ、この回動により駆動ピン67aを介して従動アーム67を共に回動させて、シフタ軸34aによる操向シフタ34の回動によって操向クラッチ23の入り切りと操向ブレーキ2の制動とを行わせる。
【0036】
車体20を駐・停車させる駐車ブレーキ制動を行わせるときは、ペダル69の踏み込みによって、ワイヤ70の作用により左右の従動アーム67が双方同時に内側向いて回動し、この回動により左右のシフタ軸34aが共に回動して、左右の操向シフタ34によって左右の操向ブレーキ2を同時に制動させる。この制動時にクラッチアーム68は、その長孔68aにより従動アーム67の駆動ピン67aが作用しても回動することがなく、クラッチセンサ65が操向クラッチ23の切りを検出することがないので、緩旋回又はスピン旋回の旋回クラッチ50は作用せず、メカロックを防止することができる。なお、このためメカロック防止用の牽制装置等を特別に設ける必要がなく、その構成を簡素化できると共に、コストアップも抑制することができる。
【0037】
また、該左右のクラッチセンサ65をミッションケース24に取り付ける左右の取付板71は、該ケース24の左右側面壁に、左右の操向ブレーキ2を内装した左右のブレーキメタル72を各々取り付ける締結ネジ73を利用して、共締めとして構成する。(図12参照)
これらの構成により、該クラッチセンサ65とクラッチアーム68やブレーキメタル72等との関係精度は、ミッションケース24を基準としているので、操向クラッチ23の切り状態の調節を高精度で行うことができる。なお、該取付板71の取付部を特別な加工等により設ける必要がなく、その構成を簡素化できると共に、コストアップも抑制することができる。
【0038】
また、該左右のクラッチセンサ65の検出板68aを、左右のクラッチアーム68のシフタ軸34aより下方側に各々設けているので(図11参照)、操向クラッチ23の切りを検出する際に、機械効率の良いクラッチアーム68の作用により直接電気的に検出ができると共に、操向クラッチ23の切り状態の調節が容易であり、応答性についても優れている。なお、該左右の検出板68cは、左右のクラッチアーム68の下部側において各々検出できるよう位置しているので、検出板68cの回動円の上部側に位置する従動アーム67等と干渉する恐れがないと共に、クラッチアーム68の回動円内にあるため周辺部品のレイアウトに影響を与えるようなことがない。
【0039】
また、該左右のクラッチセンサ65の取付板71が、ミッションケース24の前面壁24aに取り付けた左右の操向シリンダ60の外形面60aより突出しない内側位置に、コンパクトに取り付けられているので(図12参照)、作業時に畦越え等で該ケース24の前面部が衝突した場合でも、クラッチセンサ65の破損や関係位置の狂い等がなく、藁屑等の引っ掛かりも少なくすることができる。
【図面の簡単な説明】
【図1】コンバインの全体を示す側面図。
【図2】走行用ミッションケ−スのギヤ伝動機構を示す正断面展開図。
【図3】走行用ミッションケ−スのギヤ伝動機構を示す正面配列線図。
【図4】走行用ミッションケ−スのギヤ伝動機構を示す側面配列線図。
【図5】旋回モ−ド切替レバ−の作用状態を示す側面概略図。
【図6】パワステレバ−の作用状態を示す正面概略図。
【図7】自動制御の電気回路を示すブロック図。
【図8】ブレ−キ旋回の油圧回路を示すブロック図。
【図9】緩旋回及びスピン旋回の油圧回路を示すブロック図。
【図10】別実施例のパワステレバ−の作用状態を示す斜視図。
【図11】操向クラッチ及び操向ブレ−キの操作機構を示す正面図。
【図12】操向クラッチ及び操向ブレ−キの操作機構を示す一部を断面した側面図。
【符号の説明】
1 クロ−ラ
2 操向ブレ−キ
3 旋回モ−ド切替レバ−
レバ−(パワステレバ−
5 切替スイッチ
5a 補助スイッチ
20 車体
21 操向軸
22 旋回軸
23 操向クラッチ
23a ギヤ部
23b クラッチ爪
33 操向センタギヤ
33a 小径ギヤ
33b クラッチ爪
35 緩旋回ギヤ
35a クラッチ爪
36 減速軸
37 スピン中間ギヤ
37a 小径ギヤ
37b 大径ギヤ
38 スピン旋回ギヤ
38a クラッ爪
39 切替クラッチ
39a クラッチ爪
41 操向伝動ギヤ
41a 小径ギヤ
42 旋回伝動ギヤ
43 旋回中間軸
44 旋回中間ギヤ
44a 小径ギヤ
45 ホイル軸
46 ホイルギヤ
50 旋回クラッチ
ブレ−キ旋回モ−ド
緩旋回モ−ド
スピン旋回モ−ド
TECHNICAL FIELD OF THE INVENTION
[0001]
The present invention relates to a steering turning control device for a combine, which can be used for, for example, a device that performs a turning operation at the time of a work by appropriately switching a turning mode between a brake turning operation and a gentle turning operation.
[Prior art]
[0002]
At the time of combine work, when performing a steering turn on a headland or the like at the end of a field, a brake turning mode in which a standard turning by brake braking is performed and a gentle turning mode in which a gentle turning is performed by a rotation difference are performed in the field. It is already well-known that the vehicle travels while switching according to conditions.
[Problems to be solved by the invention]
[0003]
However, in a steering turn in which the brake is not braked in the gentle turning mode, the turning radius is inevitably increased. May be accompanied. For this reason, it is necessary to instantaneously switch from the gentle turning mode to the brake turning mode. However, conventionally, in order to perform this switching, it is necessary to operate a turning mode switching lever for switching the turning mode, and it is difficult to perform instantaneous switching. This may hinder the progress of work and avoidance of danger. Further, it is very troublesome and troublesome to operate the turning mode switching lever each time this switching is performed.
[0004]
In view of the above, according to the present invention, when the changeover switch provided on the power steering lever is operated during steering turning in the gentle turning mode, the mode is instantaneously switched from the gentle turning mode to the brake turning mode.
[Means for Solving the Problems]
[0005]
The present inventionLeft and right clutch claws 33b, 33b for engagement are provided on both side surfaces of a double steering center gear 33 fixed to the steering shaft 21, and the left and right steering clutches are brought close to the left and right clutch claws 33b, 33b. Each of the left and right steering clutches 23, 23 is provided with a free rotation bearing, and the left and right steering clutches 23, 23 are engaged with the right and left clutch claws 33b, 33b on both side surfaces of the steering center gear 33, respectively. 23b, and the left and right steering clutches 23, 23 are provided with left and right steering brakes 2, 2 engaged with the extended portions of the left and right steering clutches 23, 23 opposite to the clutch pawls 23b, 23b. One small-diameter gear 33a of the center gear 33, a gentle revolving gear 35 rotatably supported on the revolving shaft 22, and one small-diameter gear 37a of a dual spin intermediate gear 37 rotatably supported on the reduction shaft 36, respectively. And the other large-diameter gear 37b of the spin intermediate gear 37 meshes with the spin revolving gear 38 that is idlely supported on the revolving shaft 22, thereby interlocking the loose revolving gear 35 and the spin revolving gear 38. A switching clutch 39 provided with clutch claws 39a, 39a on both side surfaces is disposed, and a pawl clutch 39a on a side surface of the switching clutch 39 and a clutch pawl 35a or a spin revolving gear 38 provided on a side surface of the gentle turning gear 35. And one of the claws 38a provided on the side surfaces of the left and right steering clutches 23, 23 of the left and right steering clutches 23, 23 and the left and right idler bearings on the reduction shaft 36. The two steering transmission gears 41, 41 are meshed with each other, and the left and right rotation transmission gears 42, 42 are respectively supported on the rotation shaft 22 by idle rotation shafts. Left and right revolving clutches 50, 50 for rotating the revolving shafts 42, 42 are provided, and the left and right revolving transmission gears 42, 42 and the left and right dual revolving intermediate gears 44, 44 supported on the revolving intermediate shaft 43 by idle rotation, respectively. The small-diameter gears 44a, 44a of the left and right turning intermediate gears 44, 44 and the left and right steering transmission gears 41, 41 are respectively meshed and linked, and the left and right dual steering transmission gears 41, 41 are engaged. The small-diameter gears 41a, 41a in 41 and the left and right wheel gears 46, 46 provided on the left and right wheel shafts 45, 45 respectively mesh and cooperate with each other to constitute a gear transmission mechanism, and the switching is performed by the turning mode switching lever-3. The clutch 39 is actuated to switch between a swing turning mode A, a gentle turning mode B, and a spin turning mode C. Turning Left and right auxiliary switches 5a, 5a which are turned on when the lever 4 for performing the rotation operation is turned on are provided, and the lever 4 is switched to the gentle turning mode B by the turning mode switching lever 3, so that the lever 4 is tilted. When the auxiliary switch 5a is turned on by the operation, by operating the changeover switch 5, the swing mode is switched from the slow swing mode B to the brake swing mode without performing the switching operation by the swing mode switching lever-3. The combine A is configured to switch toThe configuration of the steering and turning control device is adopted.
[0006]
This allowsThe swivel mode is switched to the gentle swivel mode B by the swivel mode switching lever 3 at the headland or the like at the field end during combine work., LesWhen the bar 4 is tilted left or right, the steering clutch on the steering side is disengaged, and at the same time, the closingLaChange the rotation ratio to close the non-steer sideTo laIn contrast, a steerable turn with a relatively large turning radius, which is driven slowly, is performed. However, when the turning radius is too large to cause some inconvenience during turning,SaidBy operating the changeover switch 5 provided on the lever 4, WhirlWithout switching the rotation mode switching lever 3, the mode is instantaneously switched from the gentle turning mode B to the brake turning mode A, and a relatively small turning radius is achieved by disengaging the steering clutch on the steering side and braking the steering brake 2. Can be shifted to the steering turn.
【The invention's effect】
[0007]
thisAccording to the invention,At the time of steering turning by the tilting operation of the lever 4, the changeover switch 5 is operated so that the switching operation of the turning mode switching lever 3 is not required, and the relatively large turning radius in the gentle turning mode B is changed to the relatively small turning in the brake turning mode A. Since the radius can be switched instantaneously, the progress of work is not hindered by inconsistencies such as the alignment of the mowing strips, and it is possible to avoid dangers in extreme cases, and at the time of mode switching. Also eliminates the hassle of having to operate the swing mode switching lever 3CanYou.
BEST MODE FOR CARRYING OUT THE INVENTION
[0008]
Hereinafter, the implementation of the present inventionFormWill be described with reference to the drawings.
[0009]
A traveling device 7 having a pair of left and right crawlers 1 that travels on the soil surface is disposed below the undercarriage 6 of the combine, and threshed on the undercarriage 6 while being fed by being sandwiched between feed chains 8. Then, a threshing device 10 having a grain tank 9 for sorting and collecting the threshed grains and temporarily storing the threshed grains is mounted. At the front side of the threshing device 10, a weeding body 11 for weeding trichomes from the front end position, a raising part 12 for causing weeded culms, a cutting blade part 13 for cutting the raised cereals, A harvesting device 15 having a grain stalk transport portion 14 for transporting the harvested grain stalks rearward and delivering the harvested grain stalks to the feed chain 8 is suspended vertically by a harvesting suspension portion 16 on the front end of the chassis 6. It is supported and provided to be able to move up and down with respect to the soil surface. An operating device 17 for controlling the operation of the combiner and an operating seat 18 for this operation are provided on one side of the reaper 15, and an engine 19 is mounted below the operating seat 18, and a rear side thereof is provided. The grain tank 9 is arranged, and the traveling device 7, the threshing device 10, the reaper 15, the operating device 17, the engine 19 and the like constitute a combine vehicle body 20.
[0010]
A traveling transmission case 24 is mounted on the front end side of the chassis 6, and a gear transmission mechanism is provided inside the transmission case 24. As shown in FIGS. 2, 3, and 4, this gear transmission mechanism includes a shift shifter 28 that is rotatably supported by a shifter stay 27 on a double shift gear 26 that rotates about an input shaft 25 as a first shaft. A shifter groove 26a for fitting is provided, and by the action of the shift shifter 28, the speed change gear 26 and the high-speed gear 30 and the low-speed gear 31, which are fixed to the counter shaft 29 as the second shaft, are respectively meshed and interlocked. A transmission gear 32 fixed to the counter shaft 29 side by side and a double steering center gear 33 fixed to the steering shaft 21 as a third shaft are connected to the high speed side and the low speed side by the counter shaft 29. And the gears are interlocked so as to transmit the shifting power.
[0011]
A clutch claw 33b for meshing is provided on both side surfaces of the steering center gear 33, and a clutch claw 23b meshed with and connected to the clutch claw 33b is provided on a side surface of the gear portion 23a in close proximity to the left and right clutch claws 33b. The left and right steering clutches 23 are idle bearings, and the left and right steering clutches 23 are provided with the left and right steering brakes 2 engaged with the extension portions on the opposite sides of the clutch claws 23b, respectively. A return spring 48 of the steering clutch 23 is provided in the extension portion, and left and right steering shifters 34 for sliding the steering clutch 23 right and left are inserted between the gear portion 23a and the extension portion. A shifter groove 23c is provided, and the left and right steering shifters 34 are actuated by the rotation of a shifter shaft 34a, so that the two clutch claws 33b and 23b are engaged with each other. The side to be entered, on the contrary, separately and both said clutch pawls 33b and 23b, steering clutch 23 becomes off, and a structure to be applied to the side to be braked steering brake 2 at the same time.
[0012]
One small-diameter gear 33a of the two steering center gears 33, a gentle revolving gear 35 rotatably mounted on the revolving shaft 22 as the sixth shaft, and two revolving gears rotatably mounted on the reduction shaft 36 as the fourth shaft. And the other large-diameter gear 37b of the spin intermediate gear 37 and the spin revolving gear 38 rotatably supported on the revolving shaft 22. A switching clutch 39 having clutch claws 39a on both sides is disposed between the gentle turning gear 35 and the spin turning gear 38, and a switching shifter that slides the clutch 39 left and right is provided on the switching clutch 39. A shifter groove 39b into which the clutch gear 40 is inserted is provided. By the operation of the switching shifter 40, the clutch claws 39a and the clutch claws 35a and 38 provided on the respective side surfaces of the revolving gears 35 and 38 are provided. And one of the, has a configuration to be connected engage in each other.
[0013]
The respective gear portions 23a of the left and right steering clutches 23 and the left and right double steering transmission gears 41 which are idlely supported on the reduction shaft 36 are engaged with each other, and the right and left pivot transmissions are transmitted to the pivot 22. The left and right revolving clutches 50 for rotating the revolving transmission gears 42 are respectively stopped. The left and right revolving transmission gears 42 and the revolving intermediate shaft 43 serving as a seventh shaft are respectively free-rotated. The two left and right turning intermediate gears 44 that have been pivoted are engaged and interlocked with each other, and one small-diameter gear 44a of the left and right turning intermediate gears 44 and the left and right steering transmission gears 41 are engaged and interlocked with each other. I have.
[0014]
One of the small-diameter gears 41a of the left and right double steering transmission gears 41 and the left and right wheel gears 46, which are fixed to one end of the left and right wheel shafts 45 as the fifth shaft, respectively mesh and interlock with each other. Left and right drive wheels 47 for driving the left and right crawlers 1 are respectively fixed to the other end of the wheel shaft 45.
[0015]
A turning mode switching lever 3 for operating a switching clutch 39 for switching between each of the turning modes of the brake turning mode A, the gentle turning mode B, and the spin turning mode C, and as shown in FIG. A valve changeover switch 49 that is engaged and turned on when in the turning mode C position, a power steering lever 4 that performs left-right steering and turning in the traveling direction of the vehicle body 20, and an operating angle that is engaged with the lever 4 and the operating angle thereof And a position sensor 52 for detecting when the lever 4 is in the ON state, the left and right auxiliary switches 5a engaged so as to be brought into contact with each other at the left and right end positions when the lever 4 is tilted are turned on. And a push button type changeover switch 5 provided on the grip portion 4a of the lever 4 for switching from the gentle turning mode B to the brake turning mode A, It s constituting arranged on one side of the operating device 17.
[0016]
A vehicle speed sensor 51 for detecting the vehicle speed and a left and right clutch sensor 65 for detecting the disengagement state of the left and right steering clutches 23 are disposed and engaged with the transmission path of the transmission case 24.
[0017]
A controller 53 for performing arithmetic control of each automatic circuit mainly by a CPU is provided in the vicinity of the operation device 17, and as shown in FIG. 7, the changeover switch 5 and the left and right auxiliary switches 5 a, The vehicle speed sensor 47, the valve changeover switch 49, the position sensor 52, the left and right clutch sensors 65 and the like are connected to each other, and the left and right steering clutch 23 and the steering shifter 34 for the steering brake 2 act on the output side. A direction clutch solenoid valve 54, a swing clutch solenoid valve 55 for operating the left and right swing clutch 50, a pressure release solenoid valve 56 for switching and controlling the brake output of the steering brake 2 when the left and right steering clutch 23 is disengaged, and the like are connected respectively. And configure.
[0018]
The steering hydraulic circuit S for turning on and off the left and right steering clutches 23 and the turning hydraulic circuit T for turning on and off the left and right turning clutches 50 have different circuit configurations. The steering hydraulic circuit S is shown in FIG. As shown, from the same oil tank 58 that operates the hydraulic continuously variable transmission 57 and the reaper 15 and other hydraulic systems, the hydraulic oil supplied by the hydraulic pump 59 is passed through the steering clutch solenoid valve 54, One side of the left and right steering cylinders 60 for operating the left and right steering clutches 23 and the steering brake 2 is connected so as to be capable of supplying or returning oil, and the other side of the left and right steering cylinders 60 is The oil is returned to the oil tank 58 via a pressure relief solenoid valve 56, a variable throttle valve 61 and a fixed throttle 62.
[0019]
With this connection, in the brake turning mode A, the pressure release solenoid valve 56 is connected to the power steering circuit side by turning off the valve changeover switch 49 in accordance with the operation of the turning mode switching lever 3, and the position sensor 52 is operated by operating the power steering lever 4. The operation from the disengagement of the steering clutch 23 to the braking of the steering brake 2 is performed by the steering clutch solenoid valve 54 and the variable throttle valve 61 in accordance with the detected value of. In the gentle turning mode B or the spin turning mode C, the pressure release solenoid valve 56 is switched to the bypass circuit side by turning on the valve switching switch 49 in accordance with the switching operation of the turning mode switching lever 3, and the power steering lever 4 is operated. Based on the detection value of the position sensor 52, the steering clutch 23 is held only by the disengagement by the steering clutch solenoid valve 54 and the fixed throttle 62, and the steering brake 2 is not braked.
[0020]
As shown in FIG. 9, the turning hydraulic circuit T applies pressure oil supplied by a hydraulic pump 63 from the transmission case 24 to the left and right turning clutches 50 for operating the left and right turning clutches 50 via the turning clutch solenoid valve 55. The swivel cylinder 64 is configured to be connected so as to be able to send or return oil.
[0021]
In the transmission of gears in the traveling transmission case 24, power is transmitted to an input shaft 25, and a double transmission gear 26 of the input shaft 25 is slid left and right, and is linked to a high-speed gear 30 that rotates around a counter shaft 29. At this time, the speed is changed to a high speed, and when linked to the low-speed gear 31, the speed is changed to a low speed, and the changed power is transmitted to the steering shaft 21 by the transmission transmission gear 32 which also rotates to the counter shaft 29. Link with the center gear 33.
[0022]
When the swing mode switching lever 3 is switched to the brake swing mode A, for example, when the power steering lever 4 is tilted to the left, it is proportional to the detection value of the position sensor 52 via the pressure relief solenoid valve 56 switched to the bypass circuit side. Then, the left steering cylinder 60 is operated by the steering clutch solenoid valve 54 and the variable throttle valve 61, and the clutch claw 33 b of the steering center gear 33 and the left steering When the clutch claw 23b of the direction clutch 23 is disengaged, the steering clutch 23 rotating around the steering shaft 21 idles and, at the same time, is braked by the left steering brake 2.
[0023]
By this braking, the rotation of the two left steering transmission gears 41 idled on the reduction shaft 36 interlocked with the gear portion 23a of the steering clutch 23 is stopped, and the transmission is transmitted by the steering center gear 33. The right steering clutch 23 continues to be linked to the right steering transmission gear 41, and further from one small diameter gear 41a of the steering transmission gear 41 to the right drive wheel 47 via the right wheel gear 46. . The driving of the right crawler 1 by the right driving wheel 47 and the braking of the left steering clutch 23 cause the left crawler 1 in the braking state to make a left brake turn. .
[0024]
The turning mode switching lever 3 is switched to the slow turning mode B, and the clutch pawl 35a of the slow turning gear 35 that idles on the turning shaft 22 interlocked with one of the small-diameter gears 33a of the steering center gear 33, and the switching for rotating the shaft. When, for example, the power steering lever 4 is tilted to the left in a state where the gentle turning gear 35 is axially rotated and the valve changeover switch 49 is turned on by the meshing connection of the clutch 39 with the clutch claw 39a of the clutch 39 and the switching switch 49 is turned on. The left steering cylinder 60 is actuated by the steering clutch solenoid valve 54 and the fixed throttle 62 by the detection value of the position sensor 52 via the pressure release solenoid valve 56 switched to the bypass circuit side. The clutch pawl 33b of the steering center gear 33 and the clutch pawl 23b of the left steering clutch 23 are moved by the operation of the steering shifter 34. Ritona' Te, thereby idling the steering clutch 23 which is pivoted to the steering shaft 21.
[0025]
When this idling is detected by the clutch sensor 65, the turning of the steering clutch 23 is maintained and the steering clutch 2 is not braked, and the steering clutch solenoid valve 55 is used to rotate the steering clutch 23 through the left swing cylinder 64. , The left rotation transmission gear 42 that rotates idle from the gentle rotation gear 35 is rotated, and the two left rotations that rotate freely from the rotation transmission gear 42 to the rotation intermediate shaft 43 are rotated. Via the intermediate gear 44, the left steering gear 41 is moved from the small-diameter gear 41a of the steering transmission gear 41 to the left double steering transmission gear 41 which is idled by the disengagement of the steering clutch 23. Then, the left driving wheel 47 is driven to slowly drive the left crawler 1 with respect to the right crawler 1, so that a slow turning to the left is performed.
[0026]
The turning mode switching lever 3 is switched to the spin turning mode C, and is linked with the small diameter gear 37a of the dual spin intermediate gear 37 that idles on the reduction shaft 36 from one of the small diameter gears 33a of the steering center gear 33. The clutch pawl 38a of the spin revolving gear 38, which reverses from the large-diameter gear 37b and is interlocked with the spin revolving gear 38 that idles on the revolving shaft 22, is rotated by the reversal. The clutch pawl 39a of the switching clutch 39 to be engaged is engaged with the switching shifter 40 to rotate the spin revolving gear 38 and to turn the power steering lever 4 to the left, for example, in a state where the valve switching switch 49 is turned on. When operated, the detected value of the position sensor 52 is changed via the pressure relief solenoid valve 56 switched to the bypass circuit side. The left steering cylinder 60 is operated by the steering clutch solenoid valve 54 and the fixed throttle 62, and the clutch pawl 33 b of the steering center gear 33 and the left steering clutch 23 are operated by the operation of the left steering shifter 34. The clutch claw 23b is disengaged, and the steering clutch 23 rotating around the steering shaft 21 is idled.
[0027]
When this idling is detected by the clutch sensor 65, the turning of the steering clutch 23 is maintained and the steering clutch 2 is not braked, and the steering clutch solenoid valve 55 is used to rotate the steering clutch 23 through the left swing cylinder 64. , The left rotation transmission gear 42 that rotates idle from the spin rotation gear 38 is rotated, and the two left rotations that rotate freely from this rotation transmission gear 42 to the rotation intermediate shaft 43. Via the intermediate gear 44, the left steering gear 41 is moved from the small-diameter gear 41a of the steering transmission gear 41 to the left double steering transmission gear 41 which is idled by the disengagement of the steering clutch 23. Then, the left driving wheel 47 is driven to rotate the left crawler 1 in the reverse direction with respect to the right crawler 1, thereby causing the spinning to the left.
[0028]
As described above, when the turning mode is switched to the gentle turning mode B by the turning mode switching lever 3 to perform the steering turning, since the brake braking is not performed, the turning radius is inevitably increased, and the cutting stripe at the end of the turning is inevitably increased. In such a case, the progress of the work may be hindered due to a great deal of work such as re-doing the work several times, or in a worst case, a dangerous situation may be encountered. By turning on the changeover switch 5 provided on the lever 4 when the auxiliary switch 5a is turned on by the operation of the tilt operation end of the lever, the turning clutch 50 is disengaged and the pressure release solenoid valve 56 is simultaneously turned on and off. Side to switch to the brake turning mode A instantly without performing the switching operation by the turning mode switching lever 3. Te, in which may be carried out smooth steering pivot not inhibit progression or reduce the risk of the work.
[0029]
As a different embodiment from the above, the switching of the turning mode by the power steering lever is provided with a vertically movable lever pin 66a at the axis of the power steering lever 66 as shown in FIG. 10, and a pin spring for constantly lowering the lever pin 66a. 66b, the lever pin 66a is moved upward against the pin spring 66b by a pressing operation of a push button 66d provided on the grip portion 66c of the lever 66, and a normal operation range of the tilt operation angle of the lever 66 is set. Emergency operation areas β are provided on both left and right sides of α, respectively, and a lever stay 66e rotatably supporting the lever 66 is provided with an end point of the normal operation area α and an emergency operation area to separate the two operation areas α and β. Pin holes a and b are respectively provided at the end point of the region β, and a lever pin 66a is automatically fitted and locked in each of the pin holes a and b, and the lever 66 is moved in each operation region. A configuration in which sealed.
[0030]
With these configurations, when the steering turning is performed in the gentle turning mode B, when it is necessary to urgently switch to the brake turning mode A, the power steering lever 66 is operated by pressing the push button 66d during the normal operation. By performing the tilt operation beyond the range α to the emergency operation range β, the angle of the operation range β is detected by the position sensor 52, and the mode is instantaneously switched from the gentle turning mode B to the brake turning mode A in the same manner as described above. Can be.
[0031]
It is to be noted that any means may be used for the emergency switching means in the turning mode as long as it does not depart from the gist of the present invention.
[0032]
As shown in FIGS. 11 and 12, left and right steering shifters 34 for engaging and disengaging the left and right steering clutches 23 are fixed to left and right shifter shafts 34a, respectively. The front and rear shifter shafts 34a protrude outward from the front wall 24a, respectively, while the front walls 24a and the rear wall 24b respectively support the front and rear walls 24a and 24b. The left and right driven arms 67 are positioned and fixed to the upper side of the left and right driven arms 67, respectively, and the driving pins 67a are fixed to the front sides near the upper ends of the left and right driven arms 67, respectively.
[0033]
The left and right clutch arms 68 are journaled at positions in front of the driven arms 67 of the left and right protrusions 34b, and the drive pins 67a are fitted into long holes 68a provided near the upper ends of the left and right clutch arms 68, respectively. On each inner surface below the shifter shaft 34a of the left and right clutch arms 68, there is provided a gap adjusting screw 68b for pressing by the pistons of the left and right steering cylinders 60, and the adjusting screw 68b and the shifter Each detection plate 68c for detecting the contact of the left and right clutch sensors 65 is provided on each outer surface at an intermediate position with respect to the shaft 34a.
[0034]
An outer side of a wire 70 connected from a pedal 69 provided on a floor 17a of the operation device 17 is fixed to an upper end bent portion 67b of one arm 67 of the left and right driven arms 67. The side is rotatably locked to the tip of the drive pin 67 a of the other arm 67.
[0035]
With these configurations, the clutch arm 68 is rotated by the operation of the steering cylinder 60, and the rotation causes the driven arm 67 to rotate together via the drive pin 67a, whereby the rotation of the steering shifter 34 by the shifter shaft 34a. The movement causes the on / off operation of the steering clutch 23 and the braking of the steering brake 2 to be performed.
[0036]
When the parking brake braking for parking and stopping the vehicle body 20 is performed, the depression of the pedal 69 causes the left and right driven arms 67 to rotate inward at the same time by the action of the wire 70, and this rotation causes the left and right shifter shafts to rotate. 34a rotate together, and the left and right steering brakes 2 are simultaneously braked by the left and right steering shifters 34. At the time of this braking, the clutch arm 68 does not rotate even if the drive pin 67a of the driven arm 67 acts due to the long hole 68a, and the clutch sensor 65 does not detect the disengagement of the steering clutch 23. The turning clutch 50 for gentle turning or spin turning does not act, and mechanical lock can be prevented. For this reason, there is no need to provide a special check device or the like for preventing mechanical lock, so that the configuration can be simplified and the cost can be suppressed.
[0037]
Further, left and right mounting plates 71 for mounting the left and right clutch sensors 65 to the transmission case 24 are provided with left and right side walls of the case 24. Utilize and configure as a joint fastening. (See Fig. 12)
With these configurations, since the accuracy of the relationship between the clutch sensor 65 and the clutch arm 68, the brake metal 72, and the like is based on the transmission case 24, the disengagement state of the steering clutch 23 can be adjusted with high accuracy. . In addition, it is not necessary to provide a mounting portion of the mounting plate 71 by a special processing or the like, so that the configuration can be simplified and cost increase can be suppressed.
[0038]
Further, since the detection plates 68a of the left and right clutch sensors 65 are provided below the shifter shafts 34a of the left and right clutch arms 68 (see FIG. 11), when detecting the disengagement of the steering clutch 23, The clutch arm 68 having good mechanical efficiency allows direct electrical detection, and the disengagement state of the steering clutch 23 is easily adjusted, and the response is excellent. Since the left and right detection plates 68c are located so as to be detectable below the left and right clutch arms 68, there is a possibility that the left and right detection plates 68c may interfere with the driven arm 67 and the like located above the rotation circle of the detection plate 68c. In addition to the above, there is no influence on the layout of the peripheral parts because it is within the rotation circle of the clutch arm 68.
[0039]
In addition, since the mounting plates 71 of the left and right clutch sensors 65 are compactly mounted at an inner position where they do not protrude from the outer surfaces 60a of the left and right steering cylinders 60 mounted on the front wall 24a of the transmission case 24 (FIG. 12), even when the front portion of the case 24 collides during work, such as over a ridge, there is no breakage of the clutch sensor 65, no misalignment of the related position, and the like, and it is possible to reduce the catch of straw chips and the like.
[Brief description of the drawings]
FIG. 1 is a side view showing the entire combine.
FIG. 2 is a front sectional development view showing a gear transmission mechanism of the traveling transmission case.
FIG. 3 is a front array diagram showing a gear transmission mechanism of a traveling transmission case.
FIG. 4 is a side array diagram showing a gear transmission mechanism of a traveling transmission case.
FIG. 5 is a schematic side view showing an operation state of a turning mode switching lever.
FIG. 6 is a schematic front view showing an operation state of the power steering lever.
FIG. 7 is a block diagram showing an electric circuit of automatic control.
FIG. 8 is a block diagram showing a hydraulic circuit for brake turning.
FIG. 9 is a block diagram showing a hydraulic circuit for gentle turning and spin turning.
FIG. 10 is a perspective view showing an operation state of a power telescopic device according to another embodiment.
FIG. 11 is a front view showing an operation mechanism of a steering clutch and a steering brake.
FIG. 12 is a partially sectional side view showing an operation mechanism of the steering clutch and the steering brake.
[Explanation of symbols]
1 Crawler
2 Steering brake
3 Swivel mode switching lever
4Lever (Power Telever)
5 Changeover switch
5a  Auxiliary switch
20    Car body
21    Steering axis
22    Pivot axis
23    Steering clutch
23a  Gear section
23b  Clutch claw
33    Steering center gear
33a  Small diameter gear
33b  Clutch claw
35    Slow turning gear
35a  Clutch claw
36    Reduction axis
37    Spin intermediate gear
37a  Small diameter gear
37b  Large diameter gear
38    Spin turning gear
38a  Crack claws
39    Switching clutch
39a  Clutch claw
41    Steering transmission gear
41a  Small diameter gear
42    Swivel transmission gear
43    Swivel intermediate shaft
44    Swivel intermediate gear
44a  Small diameter gear
45    Wheel shaft
46    Wheel gear
50    Swivel clutch
A    Brake swivel mode
B    Slow turning mode
C    Spin rotation mode

Claims (1)

操向軸21に軸止する二連の操向センタギヤ33の両側面に噛み合い用の左右のクラッチ爪33b,33bを各々設け、該左右のクラッチ爪33b,33bに近接させて左右の操向クラッチ23,23を各々遊転軸承すると共に該左右の操向クラッチ23,23のギヤ部23a,23aの側面に前記操向センタギヤ33の両側面の左右のクラッチ爪33b,33bと噛み合うクラッチ爪23b,23bを設け、該左右の操向クラッチ23,23におけるクラッチ爪23b,23bとは反対側の延長部分に左右の操向ブレ−キ2,2を係合して設け、前記二連の操向センタギヤ33の片方の小径ギヤ33aと旋回軸22に遊転軸承した緩旋回ギヤ35と減速軸36に遊転軸承した二連のスピン中間ギヤ37の一方の小径ギヤ37aとを各々噛み合い連動させると共に、前記スピン中間ギヤ37の他方の大径ギヤ37bと前記旋回軸22に遊転軸承したスピン旋回ギヤ38とを噛み合い連動させ、前記緩旋回ギヤ35とスピン旋回ギヤ38との間に、両側面にクラッチ爪39a,39aを設けた切替クラッチ39を配置し、該切替クラッチ39の側面の爪クラッチ39aと、前記緩旋回ギヤ35の側面に設けたクラッチ爪35a又はスピン旋回ギヤ38の側面に設けたクラッ爪38aの何れか一方とを各別に噛み合い接続させられるように構成し、前記左右の操向クラッチ23,23のギヤ部23a,23aと減速軸36に遊転軸承する左右の二連の操向伝動ギヤ41,41とを各々噛み合い連動させ、前記旋回軸22に左右の旋回伝動ギヤ42,42を各々遊転軸承し、該旋回伝動ギヤ42,42を回転させる左右の旋回クラッチ50,50を設け、該左右の旋回伝動ギヤ42,42と、旋回中間軸43に遊転軸承した左右の二連の旋回中間ギヤ44,44とを各々噛み合い連動させ、該左右の旋回中間ギヤ44,44における小径ギヤ44a,44aと、前記左右の操向伝動ギヤ41,41とを各々噛み合い連動させ、該左右の二連の操向伝動ギヤ41,41における小径ギヤ41a,41aと、左右のホイル軸45,45に設けた左右のホイルギヤ46,46とを各々噛み合い連動させてギヤ伝動機構を構成し、旋回モ−ド切替レバ−3によって前記切替クラッチ39を作用させてブレ−キ旋回モ−ドAと緩旋回モ−ドBとスピン旋回モ−ドCとの各旋回モ−ドに切り替えられるように構成し、車体20の左右操向及び旋回を行わせるレバ−4を傾斜操作した時にONする左右の補助スイッチ5a,5aを設け、前記旋回モ−ド切替レバ−3によって緩旋回モ−ドBに切り替えて、前記レバ−4の傾斜操作によって補助スイッチ5aがONした状態のときに、切替スイッチ5を操作することによって前記旋回モ−ド切替レバ−3による切替操作を行うことなく緩旋回モ−ドBからブレ−キ旋回モ−ドAに切り替わるように構成したことを特徴とするコンバインの操向旋回制御装置。 Left and right clutch claws 33b, 33b for engagement are provided on both side surfaces of a double steering center gear 33 fixed to the steering shaft 21, and the left and right steering clutches are brought close to the left and right clutch claws 33b, 33b. Each of the left and right steering clutches 23, 23 is provided with a free rotation bearing, and the left and right steering clutches 23, 23 are engaged with the right and left clutch claws 33b, 33b on both side surfaces of the steering center gear 33, respectively. 23b, and the left and right steering clutches 23, 23 are provided with left and right steering brakes 2, 2 engaged with the extended portions of the left and right steering clutches 23, 23 opposite to the clutch pawls 23b, 23b. One small-diameter gear 33a of the center gear 33, a gentle revolving gear 35 rotatably supported on the revolving shaft 22, and one small-diameter gear 37a of a dual spin intermediate gear 37 rotatably supported on the reduction shaft 36, respectively. And the other large-diameter gear 37b of the spin intermediate gear 37 meshes with the spin revolving gear 38 that is idlely supported on the revolving shaft 22, thereby interlocking the loose revolving gear 35 and the spin revolving gear 38. A switching clutch 39 provided with clutch claws 39a, 39a on both side surfaces is disposed, and a pawl clutch 39a on a side surface of the switching clutch 39 and a clutch pawl 35a or a spin revolving gear 38 provided on a side surface of the gentle turning gear 35. And one of the claws 38a provided on the side surfaces of the left and right steering clutches 23, 23 of the left and right steering clutches 23, 23 and the left and right idler bearings on the reduction shaft 36. The two steering transmission gears 41, 41 are meshed with each other, and the left and right rotation transmission gears 42, 42 are respectively supported on the rotation shaft 22 by idle rotation shafts. Left and right revolving clutches 50, 50 for rotating the revolving shafts 42, 42 are provided, and the left and right revolving transmission gears 42, 42 and the left and right dual revolving intermediate gears 44, 44 supported on the revolving intermediate shaft 43 by idle rotation, respectively. The small-diameter gears 44a, 44a of the left and right turning intermediate gears 44, 44 and the left and right steering transmission gears 41, 41 are respectively meshed and linked, and the left and right dual steering transmission gears 41, 41 are engaged. The small-diameter gears 41a, 41a in 41 and the left and right wheel gears 46, 46 provided on the left and right wheel shafts 45, 45 respectively mesh and cooperate with each other to constitute a gear transmission mechanism, and the switching is performed by the turning mode switching lever-3. The clutch 39 is actuated to switch between a swing turning mode A, a gentle turning mode B, and a spin turning mode C. Turning Left and right auxiliary switches 5a, 5a which are turned on when the lever 4 for performing the rotation operation is turned on are provided, and the lever 4 is switched to the gentle turning mode B by the turning mode switching lever 3, so that the lever 4 is tilted. When the auxiliary switch 5a is turned on by the operation, by operating the changeover switch 5, the swing mode is switched from the slow swing mode B to the brake swing mode without performing the switching operation by the swing mode switching lever-3. A steering and turning control device for a combine, wherein the device is configured to be switched to a drive A.
JP15427795A 1995-06-21 1995-06-21 Combine steering and turning control device Expired - Fee Related JP3570014B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15427795A JP3570014B2 (en) 1995-06-21 1995-06-21 Combine steering and turning control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15427795A JP3570014B2 (en) 1995-06-21 1995-06-21 Combine steering and turning control device

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JPH0947A JPH0947A (en) 1997-01-07
JP3570014B2 true JP3570014B2 (en) 2004-09-29

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Publication number Priority date Publication date Assignee Title
JP2004074883A (en) * 2002-08-13 2004-03-11 Kubota Corp Steering structure of operating machine
JP7081646B2 (en) * 2020-10-30 2022-06-07 井関農機株式会社 combine

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