JP2004196098A - Travel transmission device for mobile agricultural machine or the like - Google Patents

Travel transmission device for mobile agricultural machine or the like Download PDF

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Publication number
JP2004196098A
JP2004196098A JP2002366612A JP2002366612A JP2004196098A JP 2004196098 A JP2004196098 A JP 2004196098A JP 2002366612 A JP2002366612 A JP 2002366612A JP 2002366612 A JP2002366612 A JP 2002366612A JP 2004196098 A JP2004196098 A JP 2004196098A
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Japan
Prior art keywords
clutch
gear
turning
traveling
transmission
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JP2002366612A
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Japanese (ja)
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JP4238574B2 (en
Inventor
Hiromasa Kikuzawa
尋正 菊沢
Yoshimasa Matsuda
善正 松田
Takahiko Kamimura
孝彦 上村
Takafumi Akiyama
尚文 秋山
Mikiji Hirota
幹司 廣田
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Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
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Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
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Priority to JP2002366612A priority Critical patent/JP4238574B2/en
Publication of JP2004196098A publication Critical patent/JP2004196098A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To improve accuracy of a numerical value detected by a speed detecting means for a traveling crawler of a turning inside and a turning outside during turn traveling in a mobile agricultural machine or the like. <P>SOLUTION: Right and left rotation number detecting means separately detecting the number of rotation of right and left steering clutches with rotated number detecting parts respectively provided on the right and left steering clutches, and an individual rotation number detecting means separately detecting the number of rotation of a straight traveling input gear and a clutch output gear with the rotated number detecting part respectively detecting the number of rotation of the straight traveling input gear of a clutch for straight traveling and the clutch output gear for turning and straight traveling are arranged in a travel transmission device for the mobile agricultural machine or the like. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
この発明は、移動農機等の走行伝動装置に関し、ギヤ連動機構を有する走行用ミッションケースにおいて、副変速部から操向クラッチ、及び旋回用クラッチ又は直進用クラッチを介した差動ギヤ機構を経て各々車軸ギヤへ動力を伝達するもの等の分野に属する。
【0002】
【従来の技術】
従来では、圃場等で走行を行う移動農機等において、走行用ミッションケースのギヤ連動機構により、旋回内側の操向クラッチの切りと走行ブレーキ又はマイルド,スピン用の旋回クラッチの作用によりブレーキ旋回,マイルド旋回,スピン旋回を実行させるもの等が一般的であるが、これらの移動農機等において、旋回走行時に走行速度が速い場合と遅い場合とでは、パワステレバーによる傾動操作角度が同じでも旋回半径が異なり旋回性能が安定しない。
【0003】
このため、旋回作用時に旋回内側と旋回外側の走行クローラの速度の検出を行い、この検出値の比較により旋回内側の走行クローラの速度を調節し、旋回半径のバラツキを修正するようにしている(例えば、特許文献1参照。)。
【0004】
【特許文献1】
特開平7ー205832
【0005】
【発明が解決しようとする課題】
しかし、このような旋回半径のバラツキを修正するための対応手段としては、従来では、左右の走行クローラの速度を検出して比較調整を行うようにしているが、これら走行クローラの速度検出については、旋回内側と旋回外側の操向クラッチのクラッチギヤの回転数を検出するもの等が開示されているが、このクラッチギヤによる回転数の検出では、読み取り歯数が少ない上に回転数が低いという不利な条件があるため、検出数値の精度が悪く、走行速度が速い場合と遅い場合とにより旋回半径のバラツキが今一つ安定しないという難点があつた。
【0006】
このため、移動農機等における旋回走行時に、旋回内側と旋回外側の走行クローラの速度検出手段による検出数値の精度改善を行うものである。
【0007】
【課題を解決するための手段】
請求項1の発明は、左右の操向クラッチ1と、旋回内側の車軸ギヤ2に差動回転を与える差動ギヤ機構3と、この差動ギヤ機構3を差動回転させる旋回用クラッチ4と、差動ギヤ機構3を非差動回転させる直進用クラッチ5とを設けた走行用ミッションケース6において、旋回走行時に、該左右の操向クラッチ1にその回転数を検出する被回転数検出部7を各々設けると共に、この左右の被回転数検出部7によって該左右の操向クラッチ1の回転数を各別に検出する左右の回転数検出手段8を検出可能位置に配設したことを特徴とする移動農機等の走行伝動装置の構成とする。
【0008】
このように構成することにより、移動農機等における圃場又は路上等での走行時に、走行用ミッションケース6のギヤ連動機構により副変速部で変速された動力の連動により、左右の操向クラッチ1を経て各々車軸ギヤ2へ連動を行い、直進走行時には直進用クラッチ5による差動ギヤ機構3の同期回転により直進走行を行い、旋回走行時には旋回内側のの操向クラッチ1を切ると同時に直進用クラッチ5の切りと旋回用クラッチ4の入りとにより、差動ギヤ機構3を差動駆動させ各種旋回モードによる旋回走行を行わせる。
【0009】
このような旋回走行時において、左右の操向クラッチ1の回転数を各別に検出するため、左右の被回転数検出部7としての、例えば左右の操向クラッチ1の各クラッチギヤの一側に連設した該ギヤより歯数の多い回転数検出ギヤを、該ミッションケース6の外壁の検出可能位置に配置した左右の回転数検出手段8としての、例えば電磁ピックアップによってその歯数を読み取り左右の操向クラッチ1の回転数を各別に検出し、この検出結果に基づいて旋回走行時における旋回内側の走行クローラの速度調節を行わせる。
【0010】
請求項2の発明は、左右の操向クラッチ1と、旋回内側の車軸ギヤ2に差動回転を与える差動ギヤ機構3と、この差動ギヤ機構3を差動回転させる旋回用クラッチ4と、差動ギヤ機構3を非差動回転させる直進用クラッチ5とを設けた走行用ミッションケース6において、旋回走行時に、該直進用クラッチ5の直進入力ギヤ9と旋回用及び直進用クラッチ4,5のクラッチ出力ギヤ10の回転数を各々検出する被回転数検出部11を設けると共に、この被回転数検出部11によって該直進入力ギヤ9とクラッチ出力ギヤ10の回転数を各別に検出する単一の回転数検出手段12を検出可能位置に配設したことを特徴とする請求項1記載の移動農機等の走行伝動装置の構成とする。
【0011】
このように構成することにより、移動農機等における圃場又は路上等での走行時に、走行用ミッションケース6のギヤ連動機構により副変速部で変速された動力の連動により、左右の操向クラッチ1を経て各々車軸ギヤ2へ連動を行い、直進走行時には、直進入力ギヤ9から直進用クラッチ5を介しクラッチ出力ギヤ10を経て差動ギヤ機構3の同期回転により直進走行を行い、旋回走行時には、旋回内側のの操向クラッチ1を切ると同時に直進用クラッチ5の切りと旋回用クラッチ4の入りとにより、旋回入力ギヤから旋回用クラッチ4を介しクラッチ出力ギヤ10を経て差動ギヤ機構3を差動駆動させ各種旋回モードにより旋回走行を行わせる。
【0012】
このような旋回走行時において、該直進入力ギヤ9とクラッチ出力ギヤ10の回転数を各別に検出するため、被回転数検出部11としての、例えば直進入力ギヤ9とクラッチ出力ギヤ10から各々ギヤ等により遊転可能に取り出した二重軸の各一端部に軸止する光遮蔽度が各々異なる2枚の回転板を、検出可能位置に配設した単一の回転数検出手段12としての、例えば発光部と受光部を有するフォトダイオードによる該2枚の回転板の光遮蔽度の差違測定により、該直進入力ギヤ9とクラッチ出力ギヤ10の回転数を各別に検出し、この検出結果に基づいて旋回走行時における旋回内側の走行クローラの速度調節を行わせる。
【0013】
【発明の効果】
請求項1の発明では、上記作用の如く、移動農機等による圃場又は路上等における走行時に、差動ギヤ機構3を有する走行用ミッションケース6のギヤ連動機構による動力の連動を行うものにおいて、差動ギヤ機構3を差動駆動させて各種旋回モードによる旋回走行を行わせるとき、左右の操向クラッチ1の回転数を各々検出するため左右の被回転数検出部7(例えば歯数の多い回転数検出ギヤ等)を、左右の回転数検出手段8(例えば電磁ピックアップ等)によってその歯数を読み取り、左右の操向クラッチ1の回転数を各別に精度良く検出することができるから、検出数値の精度向上により走行速度が速い場合と遅い場合とにおける旋回半径のバラツキを抑制して、旋回性能の安定を図ることができる。
【0014】
請求項2の発明では、上記作用の如く、移動農機等による圃場又は路上等における走行時に、差動ギヤ機構3を有する走行用ミッションケース6のギヤ連動機構による動力の連動を行うものにおいて、差動ギヤ機構3を差動駆動させて各種旋回モードによる旋回走行を行わせるとき、該直進入力ギヤ9とクラッチ出力ギヤ10の回転数を各別に検出するため被回転数検出部9(例えば遊転可能な二重軸による光遮蔽度が異なる2枚の回転板等)を、単一の回転数検出手段12(例えば発光部と受光部を有するフォトダイオード等)によって該直進入力ギヤ9とクラッチ出力ギヤ10の回転数を各別に精度良く検出することができるから、検出数値の精度向上により走行速度が速い場合と遅い場合とにおける旋回半径のバラツキを抑制して旋回性能の安定を図ることができると共に、回転数検出手段12を複数個設ける必要がなく安価に提供することができる。
【0015】
【発明の実施の形態】
以下に、この発明の実施例を移動農機等としてのコンバインについて図面に基づき説明する。
図15はコンバインの全体構成を示すもので、車台13の下部側に土壌面を走行する左右一対の走行クローラ14を配置した走行装置15を設けると共に、該車台13上にフィードチェン16に挟持して搬送供給される穀稈の脱穀を行い、この脱穀された穀粒を選別回収して一時貯留するグレンタンク17と、このタンク17に貯留された穀粒を機外へ排出する排穀オーガ17aを備えた脱穀装置18を載置し、この脱穀装置18の後端部に排藁処理装置19を装架構成させる。
【0016】
該脱穀装置18の前方に、前端側から未刈穀稈を分草する分草体20と、分草された穀稈を引き起こす引起部21と、引き起こされた穀稈を刈り取る刈刃部22と、この刈り取られた穀稈を掻き込むと共に、搬送途上において扱深さを調節して搬送される穀稈を引き継ぎ該フィードチェン16へ受け渡しする供給調節搬送部23等を有する刈取装置24を、油圧駆動による刈取昇降シリンダ24aにより土壌面に対して昇降自在なるよう該車台13の前端部へ懸架構成させる。
【0017】
該刈取装置24の一側にコンバインの操作制御を行う操作装置25と、この操作のための操作席26を設け、この操作席26の後方側には前記グレンタンク17を配置し、下方側にはエンジン27を搭載すると共に、該操作装置25と操作席26を覆うキャビン28を配置する。これらの走行装置15,脱穀装置18,刈取装置24,操作装置25,エンジン27,キャビン28等によってコンバインの車体29を構成させる。
【0018】
該走行装置15は車台13の前部側に走行用ミッションケース6を装架しており、このミッションケース6は、図1,図2に示す如く、上部側に油圧式無段変速装置30を連動可能に接合し、この無段変速装置30の可変ポンプ30aに軸止した入力プーリ31へ該エンジン27から動力を伝達可能に伝動ベルト等を張設すると共に、この可変ポンプ30aによって主変速駆動される油圧モータ30bに、第1軸としての入力軸32を連動連結して構成させる。
【0019】
該ミッションケース6のギヤ連動機構は、入力軸32にスプライン等により摺動可能に軸回転する畔際クラッチ33のクラッチ爪aと、同じく入力軸32に軸遊転する入力ギヤ34のクラッチ爪bとを畔際シフタ33aと押圧スプリング33bの作用により噛合接続可能に配設すると共に、同じく入力軸32の軸端部に前記刈取装置24駆動用の刈取駆動ギヤ35を軸止して構成させる。
【0020】
該入力軸32に軸遊転する入力ギヤ34と、第2軸としての変速駆動軸36にスプライン等により副変速シフタ37aを作用させ摺動可能に軸回転する三連の変速伝動ギヤ37の大径ギヤとを噛合連動させると共に、同じく変速駆動軸36の軸端部に該刈取駆動ギヤ35と噛合連動する刈取出力ギヤ38を軸止して構成させる。39は、該刈取装置24を駆動させる刈取出力プーリを示す。
【0021】
該変速駆動軸36に副変速シフタ37aの作用により摺動する変速伝動ギヤ37の大径ギヤと、第3軸としての変速伝動軸40に軸止する高速駆動ギヤ41,中速駆動ギヤ42,低速駆動ギヤ43とを各々噛合連動させることにより高速,中速,低速に変速する副変速部を構成させる。
【0022】
直進伝動系として、該変速伝動軸40の中速駆動ギヤ42と低速駆動ギヤ43との間に軸止する変速伝動ギヤ44と、第4A軸としての操向クラッチ軸45のセンターに軸止する内径左右側にクラッチ爪46aを有する操向センタギヤ46とを噛合連動させると共に、該操向センタギヤ46の両側に各々左右の操向クラッチ1を左右摺動可能に軸遊転して構成させる。
【0023】
該左右の操向クラッチ1のクラッチギヤ1aを、このギヤ1aに設けた左右のシフタ溝1bに嵌入した左右の操向シフタ47の作用により、操向センタギヤ46のクラッチ爪46aに各々噛合接続して入・切させ旋回作用及び左右舵取り等を行わせると共に、該左右のクラッチギヤ1aの各外端部に、被回転数検出部7としての該ギヤ1aより歯数の多い回転数検出ギヤを各々接合して構成させる。
【0024】
該左右の操向クラッチ1の回転数を、クラッチギヤ1aに接合した被回転数検出部7により各別に検出する左右の回転数検出手段8としての電磁ピックアップを、前記ミッションケース6の外壁の検出可能位置に各々配設すると共に、該左右の操向クラッチ1の接続復帰を補助する左右のリターンスプリング48を各々配置して構成させる。49は、該左右の操向シフタ47を各々作用させる左右のブッシュシリンダを示す。(図3参照)
該左右の操向クラッチ1のクラッチギヤ1aと、第7軸としての左右の車軸50の一端部に各々軸止した車軸ギヤ2とを噛合連動させると共に、該左右の車軸50の外部他端部に前記走行クローラ14を駆動する左右の走行スプロケット51を軸止して構成させる。
【0025】
次に、旋回伝動系として、前記変速伝動軸40の変速伝動ギヤ44と、第4B軸としての中間伝動軸52に軸回転する二連の中間伝動ギヤ53の大径ギヤ53aとを噛合連動させると共に、この大径ギヤ53aと、第5軸としての旋回クラッチ軸54に遊転軸承する長円筒メタル55の一端部に軸固定した直進入力ギヤ9とを噛合連動すると共に、この長円筒メタル55の他端部に連動クラッチとしての一方の直進用クラッチ5を軸装して構成させる。
【0026】
該中間伝動ギヤ53の小径ギヤ53bと、長円筒メタル55の外周に重設して遊転軸承する短円筒メタル56の一端部に軸固定した旋回入力ギヤ57とを噛合連動すると共に、この短円筒メタル56の他端部に連動クラッチとしての他方の旋回用クラッチ4を軸装して構成させる。
【0027】
該旋回用クラッチ4と直進用クラッチ5との間に、直進用クラッチ5を常時作動可能に押圧する作用スプリング58を配設し、該直進用クラッチ5を切り旋回用クラッチ4を入り作用させる外枠リング59を旋回クラッチ軸54の片方の軸端部に軸止すると共に、この旋回クラッチ軸54の軸端部を支承固定するフランジ60を前記ミッションケース6に脱着可能に締結して構成させる。
【0028】
該旋回クラッチ軸54の他方の軸端部に軸止したクラッチ出力ギヤ10と、差動ギヤ機構3としてのデファレンシャルギヤ3aを内装したデフケース3bを回転駆動するデフケースギヤ3cとを噛合連動させ、左右方向のデファレンシャルギヤ3aを、第6軸としての操向差動軸61に軸遊転させると共に、このデファレンシャルギヤ3aのボス部に左右のデフ出力ギヤ62を各々軸止し、このデフ出力ギヤ62と前記車軸ギヤ2とを噛合連動して構成させる。
【0029】
車体29の操向旋回作用を左右側への傾動操作により実行させるパワステレバー63を前記操作装置25の一側に配置して構成させる。
エンジン27からの動力を油圧式無段変速装置30の可変ポンプ30aへ入力し、この可変ポンプ30aによって駆動される油圧モータ30bにより変速動力を入力軸32に入力連動し、この入力軸32の入力ギヤ34から変速駆動軸36に摺動する三連の変速伝動ギヤ37の大径ギヤへ連動すると共に、この変速伝動ギヤ37を摺動させて、変速伝動軸40の高速駆動ギヤ41,中速駆動ギヤ42,低速駆動ギヤ43とを各々連動させ高・中・低速の副変速駆動を行わせる。
【0030】
この副変速された動力によって車体29を直進させるときは、変速伝動軸40の変速伝動ギヤ44から操向クラッチ軸45に軸回転する操向センタギヤ46へ連動し、この操向センタギヤ46のクラッチ爪46aに、操向シフタ47の作用により左右の操向クラッチ1のクラッチギヤ1aを噛合接続させ、このクラッチギヤ1aから左右の車軸ギヤ2への連動により左右の走行スプロケット51を駆動させる。
【0031】
一方、該変速伝動軸40の変速伝動ギヤ44から中間伝動軸52の中間伝動ギヤ53の大径ギヤ53aを経て直進入力ギヤ9へ連動し、この直進入力ギヤ9から長円筒メタル55を介して、作用スプリング58によって常時入りとしている直進用クラッチ5の作用により、外枠リング59を介して旋回クラッチ軸54を駆動させる。
【0032】
この旋回クラッチ軸54の駆動によりクラッチ出力ギヤ10から差動ギヤ装置3におけるデフケース3bのデフケースギヤ3cに連動すると共に、このデフケースギヤ3cの駆動によりデファレンシャルギヤ3aを作用させて差動連動される左右のデフ出力ギヤ62を、前記左右の車軸ギヤ2の回転に対し各々同速回転となるよう同期連動させる。この連動により該操向クラッチ1の入・切によるショックを緩和することができる。
【0033】
次に、車体29を旋回させるときは、パワステレバー63の傾動操作により、前記中間伝動軸52の中間伝動ギヤ53の小径ギヤ53bに連動する旋回入力ギヤ57から短円筒メタル56を介して、旋回用クラッチ4の油圧駆動により該作用スプリング58の押圧を解除し、直進用クラッチ5を切ると同時に旋回用クラッチ4を入りとし旋回クラッチ軸54を駆動させる。
【0034】
この旋回クラッチ軸54の駆動によりクラッチ出力ギヤ10から差動ギヤ装置3におけるデフケース3bのデフケースギヤ3cに連動すると共に、このデフケースギヤ3cの駆動によりデファレンシャルギヤ3aを作用させて差動連動される左右のデフ出力ギヤ62を駆動させる。
【0035】
この駆動により、例えば左へ旋回するときは、左の操向クラッチ1を切ると同時に、旋回用クラッチ4の入りを半接続状態から完全接続状態まで変化させることにより、左のデフ出力ギヤ62により左の車軸ギヤ2の回転数を、通常回転の右車軸ギヤ2に対し、緩やかに減速回転させるマイルド旋回,停止を行うブレーキ旋回,1/4逆回転させるスピン旋回の各旋回モードを、車体29を停止させることなく無段で連続して円滑な旋回走行を実行させることができる。
【0036】
このように、例えば左への旋回走行時には、左の車軸ギヤ2の回転数は左の操向クラッチ1のクラッチギヤ1aへ連動されるから、この左のクラッチギヤ1aの回転数と通常回転の右のクラッチギヤ1aの回転数とを、左右のクラッチギヤ1aの外端部に各々接合している被回転数検出部7としての歯数の多い回転数検出ギヤの通過歯数を、左右の回転数検出手段8としての電磁ピックアップにより読み取り検出することができるから、検出精度を向上させることができる。
【0037】
また、前記回転数検出手段8と異なる検出方法として、図4に示す如く、前記旋回クラッチ軸54に遊転軸承する長円筒メタル55に軸固定した直進入力ギヤ9と、該旋回クラッチ軸54に軸止したクラッチ出力ギヤ10とに各々噛合連動させる入力検出軸64と、この検出軸64の外周に重設して遊転軸承させる出力検出軸65とを、前記ミッションケース6の外壁を貫通支承して外側に設けた被回転数検出部11まで延長して構成させる。
【0038】
該被回転数検出部11における入力及び出力検出軸64,65の各軸端部に、各々光遮蔽度が異なる入力回転板11aと出力回転板11bとを軸止すると共に、この両回転板11a,11bを挟む状態で発光部12aと受光部12bを有するフォトダイオードによる単一の回転数検出手段12を配置して構成させる。
【0039】
このように構成させることにより、該入力回転板11aと出力回転板11bとに単一の回転数検出手段12によるフォトダイオードの光を遮蔽させ、この遮蔽率が、例えば入力回転板11aを25%,出力回転板11bを50%に設定する場合、入力回転板11aと出力回転板11bとが重なっているときは75%,出力回転板11bのみのときは50%,入力回転板11aのみのときは25%となり、光遮蔽度の差異測定と時間の変化からこの状態を算出して、前記左右の車軸ギヤ2の回転数の差を精度良く検出することができる。
【0040】
また、図5に示す如く、前記操作装置25のステップ25a上に、車体29を停車させた状態で刈取装置24を駆動し畔際刈りを行わせる畔際刈りペダル66を足踏み回動可能に支持軸66bにより軸承させると共に、該ステップ25aの下面部側に延長した畔際刈りペダル66の下部アーム66aに、副変速部を操作する副変速ワイヤー67の一端部と、駐車ブレーキを作用させる駐車ブレーキワイヤー68の一端部とを、緩衝スプリング67aと68aを介し各々連結係止して構成させる。
【0041】
駐車ブレーキの作動機構と、副変速部の変速シフト機構を、図6,図7,図8に示す如く、前記ミッションケース6の旋回クラッチ軸54において、直進用クラッチ5に接続する直進入力ギヤ9と旋回用クラッチ4に接続する旋回入力ギヤ57との間に、回動により両クラッチ5,4を共に入りとする駐車ブレーキ軸69の偏心部69aを嵌入配置して構成させる。
【0042】
該駐車ブレーキ軸69の該ケース6より外方へ突出させた軸端部にブレーキ軸アーム69bを軸固定し、このブレーキ軸アーム69bの端部に配置したピンcにワイヤ支持金70を介して該駐車ブレーキワイヤー68の他端部を連結係止して構成させる。
【0043】
該ミッションケース6の変速駆動軸36に、三連の変速伝動ギヤ37を軸回転摺動させる副変速シフタ37aを支持する副変速シフタ軸71を変速可能位置に配置し、該副変速シフタ37aを変速作用させる変速作用アーム72を副変速チェンジ軸73に連動連結すると共に、該ケース6より外方に突出させた軸端部に該チェンジ軸73を挟んで相対するチェンジ軸アーム73aとチェンジ軸アーム73bを各々軸固定して構成させる。
【0044】
該チェンジ軸アーム73aに固定したピン73cを挟持して該アーム73aを回動させるアーム回動板74aを回動板支持軸75に回動可能に支承し、該アーム回動板74aの一側に配置したピンdにワイヤ支持金76を介して該副変速ワイヤー67の他端部を連結係止すると共に、該回動板支持軸75を挟んでアーム回動板74aに対しハ字状に配置したアーム回動板74bの端部と、該ワイヤ支持金76の適宜位置とを緩衝スプリング77によって連結係止して構成させる。
【0045】
該副変速チェンジ軸73のチェンジ軸アーム73bの端部に配置したピンeと、前記操作装置25の一側に配置した副変速レバー78とをレバー操作ワイヤー79によって連結係止して構成させる。
このような構成により、該畔際刈りペダル66を踏み込み操作することによって、副変速ワイヤー67を作用させアーム回動板74aに挟持したピン73cによりチェンジ軸アーム73aを経て副変速チェンジ軸73を回動し、この回動によって変速作用アーム72を介し副変速シフタ37aにより、副変速部を中立位置へ強制的にシフトさせるよう位置決めを行う。
【0046】
この副変速部の中立位置へのシフトと同時に、駐車ブレーキワイヤー68も作用しブレーキ軸アーム69bを経て駐車ブレーキ軸69を回動させ、この回動による該ブレーキ軸69の偏心部69aの作用によって旋回入力ギヤ57を押圧することにより、直進用クラッチ5と旋回用クラッチ4とが共に入りとなって駐車ブレーキが作動し、確実に車体29を停車させた状態で前記刈取装置24を駆動して畔際刈りを行わせることができる。
【0047】
このように、畔際刈りを行った後、該畔際刈りペダル66を元の位置へ復帰させることにより、駐車ブレーキの解除と同時に、副変速部を作業速位置へ強制的にシフトさせるよう位置決めを行わせることができるため、刈取走行を迅速に再開することが可能となり作業能率を向上させることができる。
【0048】
また、前記の如く、該畔際刈りペダル66を踏み込み操作することによって、副変速部を中立位置へ強制的にシフトさせるよう位置決めを行うと共に、直進用クラッチ5と旋回用クラッチ4とが共に入りとなって駐車ブレーキが作動し、確実に車体29を停車させた状態で前記刈取装置24を駆動して畔際刈りを行わせるものにおいて、該畔際刈りペダル66を元の位置へ復帰させることにより、副変速部が低速の場合は低速と中速の間の中立位置に戻り、中速の場合は中速と高速の間の中立位置に戻るよう構成させる。
【0049】
このように、畔際刈りを行った後、該畔際刈りペダル66を元の位置へ復帰させることにより、副変速部が畔際刈りペダル66を踏み込む前の元の変速位置へ戻るため、適切な刈取走行速で作業を再開することが可能となり作業能率を向上させることができる。
【0050】
また、前記の如く、該畔際刈りペダル66を踏み込み操作することによって、副変速部の変速シフトと駐車ブレーキの作動とを行うものにおいて、これらの作用順序を、まず該直進用クラッチ5と旋回用クラッチ4とが共に入り側へ作用して駐車ブレーキが作動し始め、これに続き副変速部が中立位置に強制シフトされるようタイミングを設定していることにより、坂道等で該畔際刈りペダル66を踏み込み操作しても、駐車ブレーキが作動し始めてから副変速部が中立位置となるため、車体29が坂道を転がり落ちるような危険を回避することができる。
【0051】
また、前記の如く、該畔際刈りペダル66を踏み込み操作することによって、副変速部の中立位置への強制シフトと、直進用クラッチ5と旋回用クラッチ4の入りによる駐車ブレーキの作動を行うと共に、畔際刈り後、畔際刈りぺダル66を元の位置へ復帰させることにより、副変速部を作業速位置へ強制復帰させるものにおいて、主変速部が中立位置にないときには、副変速部が作業速位置へ戻らないように牽制して構成させる。
【0052】
このような構成により、主変速部が中立位置にないとき、つまり、前記無段変速装置30により前進乃至後進駆動しているときには、畔際刈りぺダル66を元の位置へ復帰させても副変速部のギヤが噛み合わないため、車体29の急激な発進や副変速部のギヤ類の破損を防止することができる。
【0053】
また、前記の如く、該畔際刈りペダル66を踏み込み操作することによって、副変速部の中立位置への強制シフトと、直進用クラッチ5と旋回用クラッチ4の入りによる駐車ブレーキの作動を行うものにおいて、畔際刈り後、畔際刈りぺダル66を元の位置へ復帰させることにより、主変速部を中立位置へ強制復帰させると共に、副変速部を作業速位置へ強制復帰するよう構成させる。
【0054】
このような構成により、副変速部を作業速位置へ復帰させる際に主変速部が中立位置へ強制復帰されるため、主変速部が前進乃至後進駆動されている状態では副変速部のギヤが噛み合うことがなく、車体29の急激な発進や副変速部のギヤ類の破損を防止することができる。
【0055】
また、前記畔際刈りペダル66の踏み込み操作では、駐車ブレーキの作動と副変速部の中立位置へのシフトとを殆んど同時に作用させて畔際刈りを行わせるものであるが、この畔際刈りペダル66の作用の代わりを行うものとしてブレーキペダル80を配設し、このブレーキペダル80により、副変速部の中立位置への強制シフト後、駐車ブレーキの作動と前記入力軸32における畔際クラッチ33の切りにより走行動力を遮断して畔際刈りを行わせるよう構成させる。
【0056】
該ブレーキペダル80の操作機構は、図9,図10,図11に示す如く、前記操作装置25のステップ25aの下面部側板25bに固定した支持軸81により足踏み回動可能にペダルボス80bを軸承させ、このペダルボス80bから上部側へペダルアーム80aを突出させると共に、このボス80bの外周に沿って下部側から上方へ向け固定した支持ピン80cに、回動板82を接合したメタル82aを回動可能に支承して構成させる。
【0057】
該下面部側板25bに、支持軸81と適宜な間隔により支持軸83を固定し、この支持軸83に軸承したアームボス84に、このボス84を挟んで相対する主変速操作アーム84aと主変速操作アーム84bを各々接合すると共に、該主変速操作アーム84aの端部と、該操作装置25の一側に配置した主変速操作用の主変速レバー85基部の両側位置のピンf,ピンgとを、各々ピンf,g側に長孔を設けたロッド86a,86bにより連結して構成させる。
【0058】
該ブレーキペダル80の回動板82の面位置からメタル82aに向けて摺動ピン82bを接合し、この摺動ピン82bを該ペダル80の踏み込みにより摺動し回動板82を回動させるL字状の摺動ピン案内板87を、該下面部側板25bの案内可能位置に固定すると共に、該摺動ピン案内板87の摺動面形状を、該回動板82と、該アームボス84に接合した主変速操作アーム84bの端部に配置したアームピン84cとを当接・離脱可能に形成して構成させる。(図12参照)該アームボス84に接合した主変速操作アーム84aの端部側に配置したピンh,ピンkに、各々前記畔際クラッチ33をブレーキペダル80の踏み込みにより入・切作用させる畔際クラッチワイヤー88と、前記駐車ブレーキ軸69の作用により駐車ブレーキを作動させる駐車ブレーキワイヤー89とを連結係止して構成させる。
【0059】
このような構成により、ブレーキペダル80を、前記図10に示す位置まで踏み込んだときは、主変速操作アーム84aの回動によりロッド86a,86bを引下げ主変速レバー85を中立位置に規制すると共に、更に、ブレーキペダル80を、図11に示す位置まで踏み込んだときは、図12に示す如く、摺動ピン82bが摺動ピン案内板87の摺動面に沿って鎖線の位置に移動するため、回動板82はP方向に押されアームピン84cとの当接から離脱し、主変速レバー85は自由に変速シフトができる。
【0060】
この状態において、畔際クラッチワイヤー88を介して畔際クラッチ33が切りとなり主変速を停止させると共に、駐車ブレーキワイヤー89を介して駐車ブレーキを作動させることにより、確実に停車した状態で刈取装置24を駆動させて畔際刈りを行わせることができる。なお、畔際刈り用として別のペダルを設ける必要がないから畔際刈り操作を容易に行うことができる。
【0061】
また、前記ブレーキペダル80の作用構成と異なる別のブレーキペダル90の操作機構として、図13,図14に示す如く、前記操作装置25のステップ25aの下面部側板25bに固定した支持軸91により、足踏み回動可能にペダルボス90bを軸承させ、このペダルボス90bから上部側へペダルアーム90aを突出させると共に、このペダルアーム90aの端部に配置したピンmに、前記駐車ブレーキ軸69の作用により駐車ブレーキを作動させる駐車ブレーキワイヤー92を連結係止して構成させる。
【0062】
該ブレーキペダル90のペダルボス90bに固着したペダル駆動ギヤ93aと噛合連動するペダル従動ギヤ93bを、該下面部側板25bに固定した支持軸94に軸承する扇状の回動板95に固着すると共に、この回動板95の外周部にそって設けた長穴に摺動可能に配置したピンpと、前記主変速レバー85基部に配置したピンqとを、このピンq側に長孔を設けたロッド96によって連結係止して構成させる。
【0063】
このような構成により、ブレーキペダル90の踏み込み操作初期に、ペダル駆動ギヤ93aとペダル従動ギヤ93bの連動により、ロッド96が回動板95の長孔端部によって引かれ主変速レバー85が中立位置へ強制シフトされ、更に、該ペダル90を踏み込み操作すると、支点越えにより回転変位した回動板95の長孔内をロッド96の下端位置のピンpが移動できるようになるため、主変速レバー85の中立位置での拘束が解除され前進操作できるようになる。従って、単一の該ペダル90操作による停車と、停車後の畔際刈りとを行うことができる。
【0064】
また、図16に示す如く、前記と異なる走行用ミッションケース97のギヤ連動機構について、油圧式無段変速装置から入力ギヤ98へ入力した動力は副変速部を経て操向センタギヤ99へ伝動し、このセンタギヤ99の動力を油圧駆動による左右の操向クラッチ100の入りにより各々車軸ギヤ101へ伝達し直進走行させると共に、該左右の操向クラッチ100の入・切と連動して油圧駆動による左又は右の走行ブレーキ102の制動により旋回走行可能に構成させる。
【0065】
図17に示す如く、該操向クラッチ100と走行ブレーキ102を各々作動させる比例電磁油圧弁103と、主変速レバーの変速位置を検出する主変速ポジションセンサ104と、パワステレバーの傾動位置を検出するパワステポジションセンサ105と、駐車ブレーキペダルの踏み込みを検出するペダルスイッチ106とをコントローラ107に接続すると共に、該主変速レバーが中立位置にシフトされていないときは駐車ブレーキを解除不能に構成させる。
【0066】
このような構成とすることにより、従来の如く、駐車ブレーキペダルの踏み込みを戻すときに、主変速レバーが中立位置にシフトされていないときは、ギヤ連動機構が作用しているから、操向クラッチ100への衝撃と摩耗や急発進による飛び出し、及び左右の操向クラッチ100のバランス不良による一方向への急発進等様々な不具合が発生していたが、この不具合を、該主変速レバーの中立位置以外へのシフトでは、駐車ブレーキを解除不能にすることにより防止できる。
【図面の簡単な説明】
【図1】走行用ミッションケースのギヤ連動機構における伝動状態を示す正面展開図。
【図2】走行用ミッションケースのギヤ連動機構における伝動状態を示す側面配置図。
【図3】操向クラッチ回転数を検出する被検出部と検出手段の関係を示す部分配置図。
【図4】図3と異なる回転数の検出を行う被検出部と検出手段の関係を示す部分線図。
【図5】副変速部と駐車ブレーキを作用させる畔際刈りペダルの踏機構を示す側面図。
【図6】副変速部と駐車ブレーキの作用を行うミッションケースの機構を示す背面図。
【図7】副変速部と駐車ブレーキの作用を行うミッションケースの機構を示す側面図。
【図8】副変速部と駐車ブレーキの作用を行うミッションケースの機構を示す平面図。
【図9】別のブレーキペダルによるブレーキ作動と走行遮断の作用機構を示す側面図。
【図10】別のブレーキペダルによるブレーキ作動と走行遮断の作用機構を示す側面図。
【図11】別のブレーキペダルによるブレーキ作動と走行遮断の作用機構を示す側面図。
【図12】別のブレーキペダルによる主変速の中立保持から解除状態を示す部分作用図。
【図13】更に、別のブレーキペダルによる主変速の中立保持の作用機構を示す側面図。
【図14】更に、別のブレーキペダルによる主変速の中立解除の作用機構を示す側面図。
【図15】コンバインにおける全体構成を示す側面図。
【図16】別の走行用ミッションケースのギヤ連動機構での伝動状態を示す正面展開図。
【図17】操向クラッチ及びブレーキ関係の自動制御作用を行う電気回路のブロック図。
【符号の説明】
1. 操向クラッチ
2. 車軸ギヤ
3. 差動ギヤ機構
4. 旋回用クラッチ
5. 直進用クラッチ
6. 走行用ミッションケース
7. 被回転数検出部
8. 回転数検出手段
9. 直進入力ギヤ
10.クラッチ出力ギヤ
11.被回転数検出部
12.回転数検出手段
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a traveling transmission device such as a mobile agricultural machine, and in a traveling transmission case having a gear interlocking mechanism, each of the traveling transmission case is provided via a steering clutch, and a differential gear mechanism via a turning clutch or a straight traveling clutch. It belongs to the field of transmitting power to axle gear.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a mobile agricultural machine or the like that travels in a field or the like, a gear interlocking mechanism of a traveling transmission case disengages a steering clutch on the inner side of turning and brakes turning and milding by the action of a traveling brake or a turning clutch for mild and spin. In general, the turning radius and the spin turning are executed. However, in these moving agricultural machines, the turning radius is different between the case where the traveling speed is fast and the case where the traveling speed is slow at the time of turning even if the tilting operation angle by the power steering lever is the same. Turning performance is not stable.
[0003]
For this reason, the speeds of the traveling crawlers on the inside and outside of the turning are detected during the turning operation, and the speeds of the traveling crawlers on the inside of the turning are adjusted by comparing the detected values to correct the variation in the turning radius ( For example, see Patent Document 1.)
[0004]
[Patent Document 1]
JP-A-7-205832
[0005]
[Problems to be solved by the invention]
However, as a countermeasure for correcting such a variation in the turning radius, conventionally, the speeds of the left and right traveling crawlers are detected and the comparative adjustment is performed. There is disclosed, for example, one that detects the rotational speed of the clutch gear of the steering clutch on the inner side of the turning and the outer side of the turning. However, in detecting the rotational speed by the clutch gear, the number of teeth to be read is small and the rotational speed is low. Due to the disadvantageous conditions, the accuracy of the detected numerical value is poor, and there is a disadvantage that the variation in the turning radius is not stable when the traveling speed is high or low.
[0006]
For this reason, the accuracy of the numerical values detected by the speed detecting means of the traveling crawlers on the inside and outside of the turn during the turning operation of the mobile agricultural machine or the like is improved.
[0007]
[Means for Solving the Problems]
The invention of claim 1 includes a left and right steering clutch 1, a differential gear mechanism 3 for giving a differential rotation to the axle gear 2 inside the turn, and a turning clutch 4 for making the differential gear mechanism 3 perform a differential rotation. In a traveling transmission case 6 provided with a straight-running clutch 5 for non-differentially rotating the differential gear mechanism 3, a rotational speed detecting section for detecting the rotational speed of the left and right steering clutches 1 during turning traveling. And left and right rotational speed detecting means 8 for separately detecting the rotational speeds of the left and right steering clutches 1 by the left and right rotational speed detectors 7 are arranged at detectable positions. Of a traveling transmission device such as a moving agricultural machine.
[0008]
With this configuration, when traveling on a field or a road or the like in a mobile agricultural machine or the like, the left and right steering clutches 1 are linked by the interlocking of the power shifted by the auxiliary transmission unit by the gear interlocking mechanism of the traveling transmission case 6. Each of the gears is interlocked with the axle gear 2, performs straight running by the synchronous rotation of the differential gear mechanism 3 by the straight running clutch 5 during straight running, and disengages the steering clutch 1 on the inside of the turning at the same time as turning while turning. When the turning 5 is turned on and the turning clutch 4 is engaged, the differential gear mechanism 3 is differentially driven to perform turning in various turning modes.
[0009]
At the time of such a turning traveling, in order to separately detect the rotational speeds of the left and right steering clutches 1, for example, one side of each clutch gear of the left and right steering clutches 1 as the left and right rotational speed detector 7. A rotational speed detecting gear having a greater number of teeth than the serially provided gears is read out by, for example, an electromagnetic pickup as left and right rotational speed detecting means 8 disposed at a detectable position on the outer wall of the transmission case 6, and the left and right rotational speed detecting gears are read out. The rotational speed of the steering clutch 1 is separately detected, and the speed of the traveling crawler inside the turning during the turning traveling is adjusted based on the detection result.
[0010]
The invention according to claim 2 includes a left and right steering clutch 1, a differential gear mechanism 3 for giving a differential rotation to the axle gear 2 inside the turn, and a turning clutch 4 for making the differential gear mechanism 3 perform a differential rotation. In a traveling transmission case 6 provided with a straight-running clutch 5 for non-differentially rotating the differential gear mechanism 3, a straight-travel input gear 9 of the straight-running clutch 5 and a turning and straight-forward clutch 4, 5, a rotational speed detector 11 for detecting the rotational speed of each of the clutch output gears 10 and a rotational speed detector 11 for individually detecting the rotational speeds of the linear input gear 9 and the clutch output gear 10. A traveling transmission device such as a mobile agricultural machine according to claim 1, wherein one rotation number detecting means 12 is disposed at a detectable position.
[0011]
With this configuration, when traveling on a field or a road or the like in a mobile agricultural machine or the like, the left and right steering clutches 1 are linked by the interlocking of the power shifted by the auxiliary transmission unit by the gear interlocking mechanism of the traveling transmission case 6. Each of the gears is interlocked with the axle gear 2 through the gears. When the vehicle is traveling straight, the vehicle travels straight by the synchronous rotation of the differential gear mechanism 3 through the clutch output gear 10 via the straight traveling input gear 9 via the clutch 5 for straight traveling. The differential gear mechanism 3 is shifted from the turning input gear via the turning clutch 4 via the clutch output gear 10 by turning off the straight steering clutch 5 and turning on the turning clutch 4 at the same time as the inner steering clutch 1 is turned off. The vehicle is dynamically driven to perform turning operation in various turning modes.
[0012]
In such a turning travel, the rotation speed of the straight input gear 9 and the clutch output gear 10 are separately detected. As a single rotation speed detecting means 12, two rotating plates each having a different light shielding degree fixed to each end of a double shaft which is taken out so as to be freely rotatable, etc., are arranged at detectable positions. For example, the rotation speed of the straight input gear 9 and the clutch output gear 10 are separately detected by measuring the difference in the light blocking degree of the two rotating plates by a photodiode having a light emitting unit and a light receiving unit, and based on the detection result. To adjust the speed of the traveling crawler inside the turning during the turning traveling.
[0013]
【The invention's effect】
According to the first aspect of the present invention, as described above, when the mobile agricultural machine travels in a field or on a road, the power is interlocked by the gear interlocking mechanism of the traveling transmission case 6 having the differential gear mechanism 3. When the dynamic gear mechanism 3 is driven differentially to perform turning in various turning modes, the left and right driven number detectors 7 (for example, rotations having a large number of teeth) for detecting the rotation numbers of the left and right steering clutches 1 respectively. The number of teeth of the left and right rotational speed detecting means 8 (for example, an electromagnetic pickup or the like) is read out, and the rotational speeds of the left and right steering clutches 1 can be accurately detected separately. By improving the accuracy of the turning speed, it is possible to suppress a variation in turning radius between a case where the traveling speed is high and a case where the running speed is low, thereby stabilizing the turning performance.
[0014]
According to the second aspect of the present invention, as described above, when the mobile agricultural machine travels in a field or on a road, the power is interlocked by the gear interlocking mechanism of the traveling transmission case 6 having the differential gear mechanism 3. When the dynamic gear mechanism 3 is driven differentially to perform a turning operation in various turning modes, the number-of-rotations detector 9 (for example, idler) for detecting the rotation speeds of the linear input gear 9 and the clutch output gear 10 separately. The linear input gear 9 and the clutch output are output from a single rotation speed detecting means 12 (e.g., a photodiode having a light-emitting portion and a light-receiving portion) by using a single rotation speed detecting means 12 (for example, a photodiode having a light-emitting portion and a light-receiving portion). Since the number of revolutions of the gear 10 can be accurately detected for each case, the accuracy of the detected numerical values is improved to suppress the variation in the turning radius between when the running speed is high and when the running speed is low, and make a turn. It is possible to stabilize the capacity, the rotational speed detecting means 12 can be provided at low cost is not necessary to provide a plurality.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings regarding a combine serving as a mobile agricultural machine or the like.
FIG. 15 shows the entire configuration of the combine, in which a traveling device 15 having a pair of left and right traveling crawlers 14 traveling on the soil surface is provided below the chassis 13, and a feed chain 16 is held on the chassis 13. A grain tank 17 for threshing grain culms fed and fed, and for selectively collecting and collecting the threshed grains, and a grain discharging auger 17a for discharging the grains stored in the tank 17 to the outside of the machine. The threshing device 18 provided with the above is mounted, and a straw processing device 19 is mounted on the rear end of the threshing device 18.
[0016]
In front of the threshing device 18, a weeding body 20 for weeding uncut kernels from the front end side, a raising unit 21 for causing the weeded kernels, a cutting blade unit 22 for cutting the raised kernels, A reaping device 24 having a supply adjusting / conveying unit 23 and the like that rakes in the cut culm and adjusts the handling depth during the conveyance to take over the culm conveyed and transfers the culm to the feed chain 16 is hydraulically driven. Is suspended from the front end of the undercarriage 13 so as to be able to move up and down with respect to the soil surface by the mowing elevating cylinder 24a.
[0017]
An operation device 25 for controlling the operation of the combiner and an operation seat 26 for this operation are provided on one side of the reaper 24, and the Glen tank 17 is arranged behind the operation seat 26, Has an engine 27 and a cabin 28 that covers the operation device 25 and the operation seat 26. The traveling device 15, the threshing device 18, the mowing device 24, the operating device 25, the engine 27, the cabin 28 and the like constitute a combine vehicle body 29.
[0018]
The traveling device 15 has a traveling transmission case 6 mounted on the front side of the chassis 13. As shown in FIGS. 1 and 2, the transmission case 6 includes a hydraulic stepless transmission 30 on the upper side. A transmission belt or the like is connected to the input pulley 31 fixed to the variable pump 30a of the continuously variable transmission 30 so as to be able to transmit power from the engine 27, and the main pump is driven by the variable pump 30a. The input shaft 32 as the first shaft is interlockingly connected to the hydraulic motor 30b to be configured.
[0019]
The gear interlocking mechanism of the transmission case 6 includes a clutch claw a of a flank clutch 33 which is rotatably slidable on the input shaft 32 by a spline or the like, and a clutch claw b of an input gear 34 which is also rotatable around the input shaft 32. Are arranged so that they can be engaged and connected by the action of the shifter 33a and the pressing spring 33b at the shore, and a cutting drive gear 35 for driving the cutting device 24 is also fixed to the shaft end of the input shaft 32.
[0020]
An input gear 34 that idles on the input shaft 32 and a triple transmission gear 37 that rotates in a slidable manner by operating a subtransmission shifter 37a by a spline or the like on a transmission drive shaft 36 as a second shaft. A reaper gear is meshed with the diametrical gear, and a reaping output gear 38 meshed with the reaping drive gear 35 is also stopped at the shaft end of the speed change drive shaft 36. Reference numeral 39 denotes a cutting output pulley for driving the cutting device 24.
[0021]
The large-diameter gear of the transmission gear 37 that slides on the transmission drive shaft 36 by the action of the auxiliary transmission shifter 37a, the high-speed drive gear 41, the medium-speed drive gear 42 that is stopped on the transmission shaft 40 as the third shaft, The sub-transmission portion that shifts to a high speed, a medium speed, and a low speed is formed by engaging the low-speed drive gear 43 with each other.
[0022]
As a straight transmission system, the transmission gear 44 is fixed between the medium-speed drive gear 42 and the low-speed drive gear 43 of the transmission shaft 40, and is fixed to the center of a steering clutch shaft 45 as the fourth A shaft. A steering center gear 46 having clutch claws 46a on the left and right sides of the inner diameter is meshed and linked, and the left and right steering clutches 1 are rotatably slidable left and right on both sides of the steering center gear 46, respectively.
[0023]
The clutch gears 1a of the left and right steering clutches 1 are respectively meshed and connected with the clutch claws 46a of the steering center gear 46 by the action of the left and right steering shifters 47 fitted into the left and right shifter grooves 1b provided in the gear 1a. A turning speed detecting gear having more teeth than the gear 1a as the speed detecting portion 7 is provided at each outer end of the left and right clutch gears 1a. Each is joined and constituted.
[0024]
An electromagnetic pickup serving as left and right rotation speed detecting means 8 for separately detecting the rotation speeds of the left and right steering clutches 1 by a rotation speed detection unit 7 joined to the clutch gear 1a, and detecting the outer wall of the transmission case 6. The left and right return springs 48 are disposed at the possible positions, and the left and right return springs 48 for assisting the connection of the left and right steering clutches 1 are restored. Reference numeral 49 denotes left and right bush cylinders that act on the left and right steering shifters 47, respectively. (See Fig. 3)
The clutch gears 1a of the left and right steering clutches 1 and the axle gears 2 fixed to one ends of the left and right axles 50 as a seventh shaft are engaged with each other, and the other external ends of the left and right axles 50 are engaged. The left and right traveling sprockets 51 for driving the traveling crawler 14 are fixed to the shaft.
[0025]
Next, as a turning transmission system, the transmission gear 44 of the transmission shaft 40 and the large-diameter gear 53a of the two intermediate transmission gears 53 rotating around the intermediate transmission shaft 52 serving as the fourth B-shaft are meshed with each other. At the same time, the large-diameter gear 53a meshes with the linear input gear 9 which is fixed to one end of a long cylindrical metal 55 rotatably supported on a revolving clutch shaft 54 as a fifth shaft. One of the straight-moving clutches 5 as an interlocking clutch is mounted on the other end of the shaft.
[0026]
The small-diameter gear 53b of the intermediate transmission gear 53 meshes with a turning input gear 57 that is fixed to one end of a short cylindrical metal 56 that is superposed on the outer periphery of the long cylindrical metal 55 and idles. The other turning clutch 4 as an interlocking clutch is mounted on the other end of the cylindrical metal 56.
[0027]
An action spring 58 is disposed between the turning clutch 4 and the straight-moving clutch 5 so as to always press the straight-moving clutch 5 so that the straight-moving clutch 5 can be operated. The frame ring 59 is fixed to one shaft end of the turning clutch shaft 54, and a flange 60 for supporting and fixing the shaft end of the turning clutch shaft 54 is detachably fastened to the transmission case 6 so as to be constituted.
[0028]
The clutch output gear 10 fixed to the other shaft end of the revolving clutch shaft 54 is engaged with a differential case gear 3c for rotating and driving a differential case 3b containing a differential gear 3a as a differential gear mechanism 3, so that the left and right are engaged. The differential gear 3a in the direction is rotated around a steering differential shaft 61 as a sixth shaft, and the left and right differential output gears 62 are fixed to the boss portions of the differential gear 3a, respectively. And the axle gear 2 are engaged with each other.
[0029]
A power steering lever 63 for executing the steering and turning action of the vehicle body 29 by a tilting operation to the left and right sides is arranged and arranged on one side of the operation device 25.
The power from the engine 27 is input to the variable pump 30a of the hydraulic continuously variable transmission 30, and the shift power is input to the input shaft 32 by the hydraulic motor 30b driven by the variable pump 30a. In conjunction with the large-diameter gear of the triple transmission gear 37 that slides from the gear 34 to the transmission drive shaft 36, the transmission gear 37 is slid so that the high-speed drive gear 41 of the transmission shaft 40 The drive gear 42 and the low-speed drive gear 43 are respectively linked to perform high-, medium-, and low-speed sub-shift drive.
[0030]
When the vehicle body 29 is caused to travel straight by the sub-shifted power, the vehicle is interlocked with the steering center gear 46 which rotates from the transmission gear 44 of the transmission shaft 40 to the steering clutch shaft 45, and the clutch pawl of the steering center gear 46 is engaged. The clutch gears 1a of the left and right steering clutches 1 are meshed and connected to 46a by the action of the steering shifter 47, and the left and right traveling sprockets 51 are driven by interlocking the clutch gears 1a with the left and right axle gears 2.
[0031]
On the other hand, the transmission transmission gear 44 of the transmission transmission shaft 40 is interlocked with the linear input gear 9 via the large-diameter gear 53a of the intermediate transmission gear 53 of the intermediate transmission shaft 52, and from the linear input gear 9 via the long cylindrical metal 55. The turning clutch shaft 54 is driven via the outer frame ring 59 by the action of the straight traveling clutch 5 which is always engaged by the action spring 58.
[0032]
By the driving of the revolving clutch shaft 54, the clutch output gear 10 is interlocked with the differential case gear 3c of the differential case 3b of the differential gear device 3, and the differential gear 3a is operated by driving the differential case gear 3c to differentially interlock the left and right. The differential output gear 62 is synchronously linked with the rotation of the left and right axle gears 2 so that they rotate at the same speed. By this interlocking, it is possible to reduce the shock caused by the engagement / disengagement of the steering clutch 1.
[0033]
Next, when the vehicle body 29 is turned, the turning input gear 57 interlocked with the small-diameter gear 53b of the intermediate transmission gear 53 of the intermediate transmission shaft 52 is turned by the tilting operation of the power steering lever 63 via the short cylindrical metal 56. The hydraulic spring of the operating clutch 4 releases the pressing of the action spring 58, and the straight clutch 5 is disengaged, and at the same time, the turning clutch 4 is turned on to drive the turning clutch shaft 54.
[0034]
By the driving of the revolving clutch shaft 54, the clutch output gear 10 is interlocked with the differential case gear 3c of the differential case 3b of the differential gear device 3 and the differential gear 3a is actuated by driving the differential case gear 3c to differentially interlock the left and right. The differential output gear 62 is driven.
[0035]
By this drive, for example, when turning to the left, the left steering clutch 1 is disengaged, and at the same time, the engagement of the turning clutch 4 is changed from a semi-connected state to a fully connected state, so that the left differential output gear 62 The rotation speed of the left axle gear 2 is set to the normal axle gear 2 in the following manner: a mild rotation for gently reducing rotation, a brake rotation for stopping, and a 1/4 reverse rotation for spin rotation. , And a smooth turning can be executed continuously and continuously without stopping.
[0036]
In this way, for example, during a left turn, the rotation speed of the left axle gear 2 is interlocked with the clutch gear 1a of the left steering clutch 1, so that the rotation speed of the left clutch gear 1a and the normal rotation speed The rotational speed of the right clutch gear 1a and the number of passing teeth of the rotational speed detecting gear having a large number of teeth as the rotational speed detector 7 joined to the outer ends of the left and right clutch gears 1a are Since reading and detection can be performed by an electromagnetic pickup as the rotation speed detecting means 8, detection accuracy can be improved.
[0037]
As a detection method different from the rotation speed detection means 8, as shown in FIG. 4, a linear input gear 9 shaft-fixed to a long cylindrical metal 55 that idles on the rotation clutch shaft 54 and a rotation input shaft 9 An input detection shaft 64, which meshes with and engages with the clutched output gear 10 that is stopped, and an output detection shaft 65 that is superimposed on the outer periphery of the detection shaft 64 and idles through the outer wall of the transmission case 6. Then, it is configured to extend to the number-of-rotations detecting unit 11 provided on the outside.
[0038]
An input rotation plate 11a and an output rotation plate 11b having different light shielding degrees are axially fixed to shaft ends of the input and output detection shafts 64 and 65 in the rotation speed detection unit 11, respectively. , 11b, a single rotation speed detecting means 12 composed of a photodiode having a light emitting unit 12a and a light receiving unit 12b is arranged.
[0039]
With such a configuration, the input rotary plate 11a and the output rotary plate 11b shield the light of the photodiode by the single rotation speed detecting means 12, and the blocking rate is, for example, 25% for the input rotary plate 11a. When the output rotary plate 11b is set to 50%, 75% when the input rotary plate 11a and the output rotary plate 11b overlap, 50% when only the output rotary plate 11b is used, and when only the input rotary plate 11a is used. Is 25%, and this state is calculated from the measurement of the difference in the light shielding degree and the change in time, so that the difference between the rotational speeds of the left and right axle gears 2 can be detected with high accuracy.
[0040]
As shown in FIG. 5, on the step 25a of the operating device 25, a shore-side cutting pedal 66 for driving the reaper 24 and performing shore-side cutting while the vehicle body 29 is stopped is supported so as to be capable of stepping and rotating. One end of a sub-transmission wire 67 for operating a sub-transmission portion, and a parking brake for applying a parking brake to a lower arm 66a of a shore-side mowing pedal 66 extended to a lower surface side of the step 25a while being supported by a shaft 66b. One end of the wire 68 is connected and locked via buffer springs 67a and 68a, respectively.
[0041]
As shown in FIGS. 6, 7, and 8, the operation mechanism of the parking brake and the shift shift mechanism of the subtransmission portion are connected to the straight-travel input gear 9 on the revolving clutch shaft 54 of the transmission case 6, as shown in FIGS. An eccentric portion 69a of a parking brake shaft 69, in which both clutches 5 and 4 are engaged by rotation, is inserted and arranged between the turning input gear 57 and the turning input gear 57 connected to the turning clutch 4.
[0042]
A brake shaft arm 69b is fixed to a shaft end of the parking brake shaft 69 protruding outward from the case 6, and a pin c disposed at an end of the brake shaft arm 69b is connected to a pin c via a wire support metal 70. The other end of the parking brake wire 68 is connected and locked.
[0043]
An auxiliary transmission shifter shaft 71 that supports an auxiliary transmission shifter 37a that axially slides the three transmission transmission gears 37 on the transmission drive shaft 36 of the transmission case 6 is disposed at a shiftable position, and the auxiliary transmission shifter 37a is A shift operation arm 72 for performing a shift operation is interlockedly connected to a sub-transmission change shaft 73, and a change shaft arm 73 a and a change shaft arm opposed to each other with the change shaft 73 interposed therebetween at a shaft end protruding outward from the case 6. Each of the shafts 73b is fixed to the shaft.
[0044]
An arm turning plate 74a for holding the pin 73c fixed to the change shaft arm 73a to turn the arm 73a is rotatably supported on a turning plate support shaft 75, and one side of the arm turning plate 74a. The other end of the auxiliary speed change wire 67 is connected and locked to the pin d disposed at a position via a wire supporting metal 76, and is formed in a C-shape with respect to the arm rotating plate 74a with the rotating plate supporting shaft 75 interposed therebetween. An end portion of the arranged arm rotation plate 74b and an appropriate position of the wire support metal 76 are connected and locked by a buffer spring 77.
[0045]
A pin e disposed at the end of the change shaft arm 73b of the sub speed change shaft 73 and an auxiliary speed lever 78 disposed at one side of the operation device 25 are connected and locked by a lever operation wire 79.
With such a configuration, by depressing the shore-side mowing pedal 66, the sub-transmission wire 67 is actuated to rotate the sub-transmission change shaft 73 through the change shaft arm 73a by the pin 73c pinched by the arm rotation plate 74a. This rotation causes the sub-transmission shifter 37a to position the sub-transmission portion to the neutral position forcibly via the transmission action arm 72.
[0046]
Simultaneously with the shift of the auxiliary transmission portion to the neutral position, the parking brake wire 68 also acts to rotate the parking brake shaft 69 via the brake shaft arm 69b, and by the action of the eccentric portion 69a of the brake shaft 69 due to this rotation. When the turning input gear 57 is pressed, the straight-moving clutch 5 and the turning clutch 4 are engaged together, the parking brake is operated, and the mowing device 24 is driven in a state where the vehicle body 29 is securely stopped. Edge mowing can be performed.
[0047]
As described above, after the shore-side mowing is performed, the shore-side mowing pedal 66 is returned to the original position, so that the parking brake is released and the sub-transmission portion is forcibly shifted to the working speed position. Can be performed, so that the mowing traveling can be quickly restarted, and the working efficiency can be improved.
[0048]
Further, as described above, by depressing the shore-side mowing pedal 66, the sub-transmission portion is positioned so as to be forcibly shifted to the neutral position, and the straight-moving clutch 5 and the turning clutch 4 are both engaged. When the parking brake is actuated and the vehicle body 29 is securely stopped, the mowing device 24 is driven to perform shore-side mowing, and the shore-side mowing pedal 66 is returned to the original position. Thus, when the sub-transmission portion is at a low speed, it returns to the neutral position between the low speed and the medium speed, and when it is at the medium speed, it returns to the neutral position between the medium speed and the high speed.
[0049]
As described above, after the shore-side mowing is performed, by returning the shore-side mowing pedal 66 to the original position, the sub-transmission portion returns to the original shift position before the shore-side mowing pedal 66 is depressed. The work can be resumed at a proper cutting traveling speed, and the work efficiency can be improved.
[0050]
Further, as described above, when the shore-side mowing pedal 66 is depressed to perform the shift shift of the auxiliary transmission portion and the operation of the parking brake, the order of these operations is first determined by turning the straight-moving clutch 5 and turning. The timing is set so that the auxiliary clutch and the clutch 4 act together on the entry side and the parking brake starts to operate, and then the sub-transmission portion is forcibly shifted to the neutral position. Even if the pedal 66 is depressed, the sub-transmission portion becomes the neutral position after the parking brake starts to operate, so that the danger of the vehicle body 29 rolling down a hill can be avoided.
[0051]
Further, as described above, by depressing the shore-side mowing pedal 66, the forcible shift to the neutral position of the subtransmission portion and the operation of the parking brake by the engagement of the straight-running clutch 5 and the turning clutch 4 are performed. After the shore cutting, the shore cutting pedal 66 is returned to the original position, thereby forcibly returning the sub-transmission to the working speed position. When the main transmission is not in the neutral position, the sub-transmission is A check is made so as not to return to the work speed position.
[0052]
With such a configuration, when the main transmission portion is not at the neutral position, that is, when the continuously variable transmission 30 is driving forward or backward, even if the shore cutting pedal 66 is returned to the original position, Since the gears of the transmission unit do not mesh with each other, it is possible to prevent sudden start of the vehicle body 29 and damage to the gears of the auxiliary transmission unit.
[0053]
Further, as described above, by depressing the shore-side mowing pedal 66, the sub-transmission portion is forcibly shifted to the neutral position and the parking brake is activated by the engagement of the straight-running clutch 5 and the turning clutch 4. In this configuration, after the shore cutting, the shore cutting pedal 66 is returned to the original position, thereby forcibly returning the main transmission to the neutral position and forcibly returning the sub-transmission to the working speed position.
[0054]
With such a configuration, the main transmission unit is forcibly returned to the neutral position when the sub transmission unit is returned to the working speed position. Therefore, when the main transmission unit is driven forward or backward, the gears of the sub transmission unit are shifted. It is possible to prevent a sudden start of the vehicle body 29 and breakage of gears in the subtransmission portion without being engaged.
[0055]
In the depressing operation of the shore-side mowing pedal 66, the operation of the parking brake and the shift of the sub-transmission portion to the neutral position are performed almost simultaneously to perform shore-side mowing. A brake pedal 80 is provided as a substitute for the action of the mowing pedal 66. After the brake pedal 80 is forcibly shifted to the neutral position of the auxiliary transmission portion, the parking brake is actuated and the side edge clutch on the input shaft 32 is engaged. The cutting of 33 cuts off the running power and cuts the shore.
[0056]
As shown in FIGS. 9, 10, and 11, the operation mechanism of the brake pedal 80 is such that the pedal boss 80b is rotatably stepped on by a support shaft 81 fixed to the lower surface side plate 25b of the step 25a of the operation device 25. The pedal arm 80a is projected upward from the pedal boss 80b, and the metal 82a having the rotating plate 82 joined to the support pin 80c fixed upward from the lower side along the outer periphery of the boss 80b is rotatable. To be configured.
[0057]
A support shaft 83 is fixed to the lower surface side plate 25b at an appropriate interval from the support shaft 81, and a main speed change operation arm 84a and a main speed change operation opposing the arm boss 84 mounted on the support shaft 83 with the boss 84 interposed therebetween. The arms 84b are joined to each other, and the end of the main shift operation arm 84a and the pins f and g on both sides of the main shift lever 85 for the main shift operation arranged on one side of the operating device 25 are connected. Are connected by rods 86a and 86b having long holes on the pins f and g, respectively.
[0058]
A sliding pin 82b is joined from the surface position of the turning plate 82 of the brake pedal 80 toward the metal 82a, and the sliding pin 82b slides by depressing the pedal 80 to turn the turning plate 82. The sliding pin guide plate 87 having a U-shape is fixed to a position where the lower side plate 25b can be guided, and the sliding surface of the sliding pin guide plate 87 is fixed to the rotating plate 82 and the arm boss 84. An arm pin 84c disposed at the end of the main transmission operation arm 84b is formed so as to be able to contact and detach therefrom. (See FIG. 12) On the shores, the shore-side clutch 33 is actuated by the depression of the brake pedal 80 on the pins h and k arranged on the end side of the main speed change operation arm 84a joined to the arm boss 84, respectively. A clutch wire 88 and a parking brake wire 89 for operating the parking brake by the action of the parking brake shaft 69 are connected and locked.
[0059]
With this configuration, when the brake pedal 80 is depressed to the position shown in FIG. 10, the rods 86a and 86b are lowered by the rotation of the main transmission operation arm 84a, and the main transmission lever 85 is restricted to the neutral position. Further, when the brake pedal 80 is depressed to the position shown in FIG. 11, the sliding pin 82b moves to the position indicated by the dashed line along the sliding surface of the sliding pin guide plate 87 as shown in FIG. The rotating plate 82 is pushed in the P direction and disengages from contact with the arm pin 84c, and the main shift lever 85 can shift freely.
[0060]
In this state, the shore-side clutch 33 is disengaged via the shore-side clutch wire 88 to stop the main shift, and the parking brake is operated via the parking-brake wire 89, so that the reaper 24 is securely stopped. Can be driven to perform shore-side mowing. In addition, since there is no need to provide another pedal for shore-side mowing, the shore-side mowing operation can be easily performed.
[0061]
As another operation mechanism of the brake pedal 90 different from the operation configuration of the brake pedal 80, as shown in FIGS. 13 and 14, a support shaft 91 fixed to the lower surface side plate 25b of the step 25a of the operation device 25 includes: The pedal boss 90b is rotatably supported by a pedal, and the pedal arm 90a is projected upward from the pedal boss 90b. The parking brake wire 92 for operating the vehicle is connected and locked.
[0062]
A pedal driven gear 93b meshing with and interlocking with a pedal drive gear 93a fixed to a pedal boss 90b of the brake pedal 90 is fixed to a fan-shaped rotating plate 95 which is supported on a support shaft 94 fixed to the lower side plate 25b. A pin p slidably disposed in a long hole provided along the outer peripheral portion of the rotating plate 95 and a pin q disposed in the base of the main speed change lever 85 are connected to a rod having a long hole on the pin q side. 96 is used to connect and lock.
[0063]
With such a configuration, in the initial stage of the depression operation of the brake pedal 90, the rod 96 is pulled by the end of the long hole of the rotating plate 95 by the interlocking of the pedal drive gear 93a and the pedal driven gear 93b, so that the main speed change lever 85 is in the neutral position. When the pedal 90 is further forcibly operated and the pedal 90 is further depressed, the pin p at the lower end position of the rod 96 can move in the long hole of the rotating plate 95 that has been rotationally displaced by exceeding the fulcrum. The restraint at the neutral position is released, and the forward operation can be performed. Therefore, it is possible to stop the vehicle by a single operation of the pedal 90 and cut the shore after stopping the vehicle.
[0064]
Further, as shown in FIG. 16, with respect to the gear interlocking mechanism of the traveling transmission case 97 different from the above, the power input from the hydraulic continuously variable transmission to the input gear 98 is transmitted to the steering center gear 99 via the auxiliary transmission unit, The power of the center gear 99 is transmitted to the axle gear 101 by the engagement of the left and right steering clutches 100 driven by hydraulic drive, and the vehicle is driven straight ahead. The vehicle is configured to be capable of turning by braking by the right traveling brake 102.
[0065]
As shown in FIG. 17, a proportional electromagnetic hydraulic valve 103 for operating the steering clutch 100 and the traveling brake 102, a main shift position sensor 104 for detecting a shift position of the main shift lever, and a tilt position of the power steering lever are detected. A power steering position sensor 105 and a pedal switch 106 for detecting depression of a parking brake pedal are connected to a controller 107, and when the main shift lever is not shifted to the neutral position, the parking brake cannot be released.
[0066]
With such a configuration, when the main shift lever is not shifted to the neutral position when the parking brake pedal is depressed as in the related art, the gear interlocking mechanism operates, so that the steering clutch Various problems have occurred, such as the impact on the gear 100 due to wear and abrupt start, and sudden start in one direction due to improper balance of the left and right steering clutches 100. Shifting to a position other than the position can be prevented by disabling the parking brake.
[Brief description of the drawings]
FIG. 1 is a front development view showing a transmission state in a gear interlocking mechanism of a traveling transmission case.
FIG. 2 is a side view showing a transmission state in a gear interlocking mechanism of a traveling transmission case.
FIG. 3 is a partial layout diagram showing a relationship between a detected part that detects a steering clutch rotation speed and a detection unit.
FIG. 4 is a partial diagram showing a relationship between a detected part and a detecting means for detecting a rotation speed different from that in FIG. 3;
FIG. 5 is a side view showing a stepping mechanism of a shore-side mowing pedal for operating a sub-transmission portion and a parking brake.
FIG. 6 is a rear view showing a mechanism of a transmission case that performs a function of a sub transmission unit and a parking brake.
FIG. 7 is a side view showing a mechanism of a transmission case that performs a function of a sub transmission unit and a parking brake.
FIG. 8 is a plan view showing a mechanism of a transmission case that performs operations of a sub transmission unit and a parking brake.
FIG. 9 is a side view showing an operation mechanism of a brake operation by another brake pedal and a running cutoff.
FIG. 10 is a side view showing an operation mechanism of a brake operation and a traveling cutoff by another brake pedal.
FIG. 11 is a side view showing an operation mechanism of a brake operation and a traveling cutoff by another brake pedal.
FIG. 12 is a partial operation view showing a state in which the main shift is released from neutral holding by another brake pedal.
FIG. 13 is a side view showing an operation mechanism for maintaining a neutral state of a main shift by another brake pedal.
FIG. 14 is a side view showing an operation mechanism for releasing the neutralization of the main shift by another brake pedal.
FIG. 15 is a side view showing the overall configuration of the combine.
FIG. 16 is an exploded front view showing a transmission state in a gear interlocking mechanism of another traveling mission case.
FIG. 17 is a block diagram of an electric circuit that performs an automatic control operation related to a steering clutch and a brake.
[Explanation of symbols]
1. Steering clutch
2. Axle gear
3. Differential gear mechanism
4. Swivel clutch
5. Straight clutch
6. Transmission mission case
7. Rotated speed detector
8. Rotation speed detection means
9. Straight input gear
10. Clutch output gear
11. Rotated speed detector
12. Rotation speed detection means

Claims (2)

左右の操向クラッチ1と、旋回内側の車軸ギヤ2に差動回転を与える差動ギヤ機構3と、この差動ギヤ機構3を差動回転させる旋回用クラッチ4と、差動ギヤ機構3を非差動回転させる直進用クラッチ5とを設けた走行用ミッションケース6において、旋回走行時に、該左右の操向クラッチ1にその回転数を検出する被回転数検出部7を各々設けると共に、この左右の被回転数検出部7によって該左右の操向クラッチ1の回転数を各別に検出する左右の回転数検出手段8を検出可能位置に配設したことを特徴とする移動農機等の走行伝動装置。A left and right steering clutch 1, a differential gear mechanism 3 for giving differential rotation to the axle gear 2 inside the turn, a turning clutch 4 for differentially rotating the differential gear mechanism 3, and a differential gear mechanism 3 In a traveling transmission case 6 provided with a straight-running clutch 5 for non-differential rotation, the left and right steering clutches 1 are each provided with a number-of-revolutions-detecting section 7 for detecting the number of revolutions during turning and traveling. A left and right rotational speed detecting means 8 for separately detecting the rotational speeds of the left and right steering clutches 1 by a left and right rotational speed detecting section 7 is disposed at a detectable position. apparatus. 左右の操向クラッチ1と、旋回内側の車軸ギヤ2に差動回転を与える差動ギヤ機構3と、この差動ギヤ機構3を差動回転させる旋回用クラッチ4と、差動ギヤ機構3を非差動回転させる直進用クラッチ5とを設けた走行用ミッションケース6において、旋回走行時に、該直進用クラッチ5の直進入力ギヤ9と旋回用及び直進用クラッチ4,5のクラッチ出力ギヤ10の回転数を各々検出する被回転数検出部11を設けると共に、この被回転数検出部11によって該直進入力ギヤ9とクラッチ出力ギヤ10の回転数を各別に検出する単一の回転数検出手段12を検出可能位置に配設したことを特徴とする請求項1記載の移動農機等の走行伝動装置。A left and right steering clutch 1, a differential gear mechanism 3 for giving differential rotation to the axle gear 2 inside the turn, a turning clutch 4 for differentially rotating the differential gear mechanism 3, and a differential gear mechanism 3 In the traveling transmission case 6 provided with the non-differentially rotating straight traveling clutch 5, during turning, the straight traveling input gear 9 of the straight traveling clutch 5 and the clutch output gear 10 of the swinging and straight traveling clutches 4, 5 are formed. A number-of-rotations detecting section 11 for detecting the number of rotations is provided, and a single number-of-rotations detecting means 12 for detecting the number of rotations of the linear input gear 9 and the clutch output gear 10 separately by the number-of-rotations detecting section 11. The traveling transmission device for a mobile agricultural machine or the like according to claim 1, wherein the traveling transmission device is disposed at a detectable position.
JP2002366612A 2002-12-18 2002-12-18 Traveling power transmission equipment such as mobile agricultural machines Expired - Fee Related JP4238574B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002366612A JP4238574B2 (en) 2002-12-18 2002-12-18 Traveling power transmission equipment such as mobile agricultural machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002366612A JP4238574B2 (en) 2002-12-18 2002-12-18 Traveling power transmission equipment such as mobile agricultural machines

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JP4238574B2 JP4238574B2 (en) 2009-03-18

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103465963A (en) * 2013-08-30 2013-12-25 北京理工大学 Mechanical differential drive mechanism
CN109538548A (en) * 2018-12-18 2019-03-29 北奔重型汽车集团有限公司 A kind of non-differential cab lifting system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103465963A (en) * 2013-08-30 2013-12-25 北京理工大学 Mechanical differential drive mechanism
CN103465963B (en) * 2013-08-30 2018-03-30 北京理工大学 A kind of mechanical differential drive mechanism
CN109538548A (en) * 2018-12-18 2019-03-29 北奔重型汽车集团有限公司 A kind of non-differential cab lifting system
CN109538548B (en) * 2018-12-18 2024-03-15 北奔重型汽车集团有限公司 Non-differential cab lifting system

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