JP4388201B2 - Management machine - Google Patents

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Publication number
JP4388201B2
JP4388201B2 JP2000118975A JP2000118975A JP4388201B2 JP 4388201 B2 JP4388201 B2 JP 4388201B2 JP 2000118975 A JP2000118975 A JP 2000118975A JP 2000118975 A JP2000118975 A JP 2000118975A JP 4388201 B2 JP4388201 B2 JP 4388201B2
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shaft
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JP2001299007A (en
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裕光 早田
将憲 中野
光彦 丹治
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Yanmar Co Ltd
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Yanmar Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は例えば中耕除草または耕耘作業などを行う歩行型の管理機に関する。
【0002】
【発明が解決しようとする課題】
従来、この種管理機に用いられるデフ機構は大きく、重量が大なうえ高コストなもので、デフ機構を内設するミッションケースも必然的に大きなものとなって機体が大型化し、トレッドも大となるため、作業幅の広い作業にしか適正に対応できないなどの不都合があった。
【0003】
【課題を解決するための手段】
したがって本発明は、左右走行輪に回転差を発生させるデフ機構をミッションケースに内設させた管理機において、デフ機構の入力部を中心として左右一側にデフケース、他側にデフロック用の爪クラッチを配設して、デフ機構を小型コンパクトなものとさせて、ミッションケースの小型化を図って、トレッドも小さくして作業幅の狭い作業にも適正に対応させて作業の適応性を向上させるものである。
【0004】
また、ミッションケースの内壁面にベアリングを介してデフケースの一側外径部を回転自在に支持させて、ミッションケース内にデフケースを簡潔に組込んでミッションケースの小型コンパクト化を容易に可能とさせるものである。
【0005】
さらに、デフ機構を構成する右デフサイドギヤのうち一方のデフサイドギヤをベアリングと略同一平面上に配置させて、ミッションケース内にデフケース及びデフサイドギヤなどデフ機構をコンパクトに組込んで、ミッションケースの小型化を容易に可能とさせるものである。
【0006】
【発明の実施の形態】
以下、本発明の実施例を図面に基づいて詳述する。図1乃至図5に示す如く、左右一対の走行輪(1)をミッションケース(2)に車軸(3)を介して装設させ、ミッションケース(2)後部にヒッチ台(4)を固定させ、ヒッチ台(4)とミッションケース(2)に操向ハンドル(5)基端を連結させ、ミッションケース(2)の後方斜上方に操向ハンドル(5)を設け、変速レバー(6)、主クラッチレバーであるデッドマンレバー(7)、PTOクラッチレバー(8)、デフロックレバー(9)などを操向ハンドル(5)のループ形操作部(10)に取付けると共に、前記ミッションケース(2)上面の略水平面(11)にエンジン(12)を上載させて固定させ、エンジン(12)出力を無段変速する油圧変速機(13)をミッションケース(2)後部の右側面に固定させ、エンジン(11)の出力軸(14)に油圧変速機(13)の入力軸(18)を連結させ、プーリ(15)(16)及びベルト(17)を介して変速機(13)の出力軸(19)に車軸(3)を連結させるように構成している。
【0007】
また、前記ミッションケース(2)を側面視略L形に形成して後側を下方に突出させ、ミッションケース(2)後側の下部に車軸(3)を配備させ、前記エンジン(11)の出力軸(14)と車軸(3)間に変速機(13)を配設させ、エンジン(11)の駆動力を上方から後下方に伝えて走行輪(1)を駆動させると共に、前記ミッションケース(2)の変速機(13)前方にPTO軸(20)を配設させ、該ケース(2)及び伝動ケース(21)を介してロータリ作業機(22)を機体前方に支持させている。
【0008】
前記ロータリ作業機(22)はロータリ軸(23)とロータリ刃(24)とを有し、前記PTO軸(20)に伝動ケース(21)を介しロータリ軸(23)を連結させると共に、耕耘と草刈に兼用する複数の切削ロータリ刃(24)をロータリ軸(23)に取付け、各切削ロータリ刃(24)の上面及び左右をロータリカバー(25)及び左右側板(26)によって閉塞させ、走行輪(1)前進と同一方向回転の切削ロータリ刃(24)正転によって耕耘作業を行わせる一方、切削ロータリ刃(24)の逆転によって草刈作業を行わせる。
【0009】
さらに、前記作業機(22)の耕耘作業と同時に畦立作業を行わせる後作業機(27)を備え、ヒッチ台(4)後側に固設する後ヒッチ(28)にヒッチピン(29)を介して後作業機(27)を着脱自在に設けると共に、ヒッチピン(29)回りに回転させて昇降自在に後作業機(27)を後ヒッチ(28)に取付け、後作業機(27)を下降着地させて畦立作業位置に支持させたり、ヒッチ台(4)後側に後作業機(27)を持上げて非作業位置に支持させる。また、前記エンジン(11)後側に燃料タンク(30)を設ける。
【0010】
図6にも示す如く、平面視門形のゲージフレーム(31)両端部を作業機(22)前方に突出させて左右ゲージ輪(32)を取付け、前記ゲージフレーム(31)の門形中間部に固設する結合フレーム(33)の結合子(34)に調高ハンドル(35)前端のネジ軸(36)を結合させるもので、前記調高ハンドル(35)を機体の中心ラインより右側で前後方向に配設し、ハンドル(35)後端側を操向ハンドル(5)の下方位置まで延設させて、操向ハンドル(5)位置でハンドル(35)後端のハンドル操作部(37)の回動操作を可能に設けている。そして前記ゲージフレーム(31)の門形支脚部(31a)を側面視略L形に形成して、ロータリカバー(25)の左右側板(26)に支軸(38)を介し回転自在に取付ける回転支持体(39)に、支脚部(31a)のL形コーナ部を上側より当接保持させて、調高ハンドル(35)の回動操作時には支持体(39)を中心としてゲージフレーム(31)を揺動させ、ゲージ輪(32)を昇降させるように構成している。
【0011】
また、前記ロータリカバー(25)前方に平面視門形の前面カバー(40)を備えるもので、前面カバー(40)の両端部を前記支脚部(31a)の前端内側に固定させて、ゲージ輪(32)の地上高の調節時にはゲージ輪(32)と一体に前面カバー(40)も移動させて、例えば作業機(22)を下降させる耕耘作業時には作業機(22)に対しては前面カバー(40)を上昇位置とさせて圃場面との干渉を回避させ、また作業機(22)を上昇させる草刈作業時には作業機(22)に対しては前面カバー(40)を下降位置とさせて、草や小石などの作業機(22)前方への飛散を防止するように構成している。
【0012】
図5に示す如く、前記ロータリ軸(23)に爪台(41)を固定させ、爪台(41)に支軸(42)を介してロータリ刃(24)を回転自在に軸支させ、ロータリ軸(23)回転時に遠心力によって放射線方向にロータリ刃(24)を突出させ、支軸(42)回りの回転によって衝撃を吸収させるロータリ刃(24)の高速逆転によって草刈を行わせると共に、前記爪台(41)に後退ストッパ(43)を固定させ、ロータリ軸(23)を正転させて耕耘するとき、ロータリ刃(24)を後退ストッパ(43)に当接させ、耕耘抵抗に対してロータリ刃(24)を後傾姿勢で固定支持させ、後退ストッパ(43)を介して後退角を形成してロータリ刃(24)を支持させて耕耘抵抗を低減させ乍ら耕耘力(深さ)を確保するように構成している。
【0013】
図6乃至図9に示す如く、作業機(22)を耕耘及び草刈高さ位置の2段階に切換える作業高さ切換部材(44)を調高ハンドル(35)の中間に連結させるもので、前記ミッションケース(2)と伝動ケース(21)を連結するPTO軸(20)外側の軸パイプ(45)に切換部材(44)下端を固設させ、該切換部材(44)の前後方向に開設する長孔(46)の前端・中間・後端下側に草刈・中立・耕耘ノッチ(47)(48)(49)形成して、前記ハンドル(35)を嵌挿固定するハンドル受体(50)の両側丸軸部(50a)を前記ノッチ(47)(49)に係合させるとき、ハンドル(35)を大きく前後に移動させて、受体(50)と草刈ノッチ(47)の係合時にあってはゲージ輪(32)を下動位置とさせ、且つハンドル操作部(37)の回動操作によってゲージ輪(32)を下動位置で無段階に小さく変化させて、作業機(22)の耕深を1cmとする低草刈作業や、地上高を30mm或いは40mmとする高草刈作業或いは移動作業などを行う一方、受体(50)と耕耘ノッチ(49)の係合時にあってはゲージ輪(32)を上動位置とさせ、且つハンドル操作部(37)の回動操作によってゲージ輪(32)を上動位置で無段階に小さく変化させて、作業機(22)の耕深を10cm或いは5cmとする耕耘作業などを行うように構成している。
【0014】
また、前記調高ハンドル(35)を草刈用ノッチ(47)或いは耕耘用ノッチ(49)を切換える時、ミッションケース(2)内の走行変速ギヤ部(51)及び作業変速ギヤ部(52)も同時に変速切換するもので、前記切換部材(44)の中立ノッチ(48)下側位置の支軸(53)に揺動筒軸(54)を回動自在に支持させ、該筒軸(54)に切換板(55)と揺動アーム(56)の各基端を固設させている。前記切換板(55)は切換部材(44)に近接して略平行に筒軸(54)に下側基端を固設させ、上端平坦面(55a)を前記長孔(46)の下側面に沿わせ、中央に中立ノッチ(48)に一致させる略同形の中立溝(57)を形成し、平坦面(55a)両端を草刈及び耕耘ノッチ(47)(49)位置まで延設させて、ハンドル(35)の丸軸部(50a)と中立ノッチ(48)の係合時は切換板(55)の中立溝(57)も丸軸部(50a)に係合させて平坦面(55a)を水平とする中立姿勢に切換板(55)を保つ一方、ハンドル(35)と草刈及び耕耘ノッチ(47)(49)の係合時にあっては丸軸部(35a)で平坦面(55a)両端を押圧して、前記支軸(53)を中心として切換板(55)を左右に回動させるように構成している。
【0015】
また、前記軸パイプ(45)の切換部材(44)下側位置の固定受け台(57)に揺動軸(58)を介し側面視門形の揺動板(59)を左右揺動自在に設けて、該揺動板(59)の一端側と前記揺動アーム(56)とをロッド(60)を介し連動連結すると共に、前記ギヤ部(51)(52)に連結する変速切換ロッド(61)の他端側を係合軸(62)を介し揺動板(59)の他端側の長孔(59a)に連結させて、前記ハンドル(35)の受体(50)を切換部材(44)の草刈及び耕耘ノッチ(47)(49)に位置させるとき、軸(58)を中心として揺動板(59)を揺動させ切換ロッド(61)を略左右水平方向に移動させてギヤ部(51)(52)の切換えを行うように構成している。
【0016】
また図3乃至図5に示す如く、前記ミッションケース(2)前側の下部をロータリカバー(25)の外周面に沿う円弧面(2a)に形成して、該円弧面(2a)にロータリカバー(25)外周面の後半部を固設すると共に、ロータリカバー(25)の左右側板(26)でロータリ軸(23)の両端を支持して部品点数や組立工数を削減させコストの低減を図るように構成している。
【0017】
さらに、前記側板(26)の外側にボルト(63)を介し取外し自在に且つロータリ軸(23)を中心に回動自在に側面カバー(64)を取付けるもので、側面カバー(64)は形状を扇形に形成し、ロータリカバー(25)の円弧外周面の外径寸法より側面カバー(64)の円弧外周の外径寸法を小に設け、ロータリ軸(23)を中心とする円弧形の2つのボルト(63)用の長孔(65)を側面カバー(64)に開設し、該長孔(65)及びボルト(63)を介し側面カバー(64)を側板(26)に取付けて、ゲージ輪(32)の上動する地上高(作業高さ)の低い作業機(22)の耕耘作業時などでは図3仮想線を示す如く側面カバー(64)を上動させ、側板(26)形状内にカバー(64)を収納する一方、ゲージ輪(32)の下動する地上高の高い作業機(22)の草刈作業時などでは図3実線に示す如く側面カバー(64)を下動させ、側板(26)より側面カバー(64)を突出させて、側板(26)下端部と圃場面間に大きく形成される間隙をカバー(64)で覆ってロータリ刃(25)を保護するように構成している。
【0018】
このように、走行輪(1)を有する機体に作業ロータリであるロータリ作業機(22)を装備させる管理機において、作業機(22)の上方を覆うロータリカバー(25)の左右側板(26)に側面カバー(64)を回動自在に設けたもので、作業機(22)の作業高さ(地上高)の高い草刈作業時などでロータリカバー(25)の左右側板(26)のみではロータリ刃(24)を適正に保護できないときには、左右側板(26)と圃場間の間隙を側面カバー(64)で覆って、作業機(22)をロータリカバー(25)と側面カバー(64)とで適正に保護した良好な作業を行うことができる。
【0019】
また、側面カバー(64)の形状を扇形に形成し、ロータリカバー(25)の左右側板(26)の外径形状より側面カバー(64)の外径形状を小に設けたもので、耕耘作業など側面カバー(64)を必要としない通常作業時には、ロータリカバー(25)の左右側板(26)の形状内に側面カバー(64)を収納状態とさせて該カバー(64)が作業中の障害となるのを防止すると共に、草刈作業などのカバー(64)必要時には最大有効に作用させて作業機(22)を適正に保護することができる。
【0020】
さらに、側面カバー(64)の回動中心を作業機(22)の回転中心であるロータリ軸(23)或いはロータリ軸(23)近傍に設けたもので、側面カバー(64)を必要としない耕耘作業時などではロータリカバー(25)の左右側板(26)の略半円形状内にコンパクトに収納すると共に、側面カバー(64)の必要時には左右側板(26)の円弧外径線に沿う状態に左右側板(26)から側面カバー(64)を効果的に突出させて、作業機(22)の適正な保護を図ることができる。
【0021】
また、前記ロータリカバー(25)の後端に蝶番(66)を介し回動自在にリヤカバー(67)の上端を取付けると共に、該カバー(67)の下端に上下寸法の短いゴム板(68)を固着させて、ロータリカバー(25)と圃場面間の距離が大きく変化する場合にもリヤカバー(67)の回動によって良好に対応させると共に、ゴム板(68)の上下寸法を短くすることによって作業機(22)側への巻込みを防止するように構成している。
【0022】
図10、図11に示す如く、前記エンジン(14)の出力を変速機(13)に伝達するベルト(17)のテンションクラッチである主クラッチ(69)をクラッチワイヤ(70)を介して入切するデッドマンレバー(7)及びミッションケース(2)に内設するデフ機構(87)のデフロックの入切をワイヤ(71)を介して行うデフロックレバー(9)をループ形状に形成して操向ハンドル(5)のループ形操作部(10)に設けるもので、各レバー(7)(9)の左右外側幅をハンドル操作部(10)の左右巾側幅より小さく設け、ハンドル(5)にレバー(7)(9)の基端を連結させるレバー回動軸(72)(73)をハンドル(5)の下側面の前後に連結させ、デッドマンレバー(7)中央横方向のレバー操作部(7a)をハンドル操作部(10)より上方に、またデフロックレバー(9)中央横方向のレバー操作部(9a)をハンドル操作部(10)より下方に配置させて、操向ハンドル(5)の後側或いは左右両側の何れの操作位置からもレバー(7)(9)までの距離を略一定とさせて、容易にレバー(7)(9)の操作を可能とさせるように構成している。
【0023】
また図11に示す如く、主クラッチ(69)が入となるデッドマンレバー(7)の下動時及びデフロックが切(ロック解除)となるデフロックレバー(9)の上動時には、デッドマンレバー(7)の操作部(7a)をハンドル操作部(10)の上面側で若干前方位置に近接させると共に、デフロックレバー(9)の操作部(9a)をハンドル操作部(10)の下面側中央に近接させて、各レバー(7)(9)の操作必要時にはその都度ハンドル操作部(10)より手を離すことなくハンドル操作部(10)とともに各レバー(7)(9)の操作部(7a)(9a)を容易に一緒に握って主クラッチ(69)の入、デフロックの切操作を行う一方、ハンドル操作部(10)より手が離れるデッドマンレバー(7)及びデフロックレバー(9)の上動及び下動時には主クラッチ(69)を切、デフロックを入として作業を中断させるように構成している。
【0024】
図12乃至図16に示す如く、前記ミッションケース(2)内には、油圧変速機(13)の出力軸(19)に設ける高低速ギヤ(74)(75)と、切換軸(76)に設けて走行変速ギヤ部(51)を構成する高低速切換ギヤ(77)と、出力軸(19)に遊嵌する遊転軸(78)と切換軸(76)を常時連結する一対の減速ギヤ(79)(80)と、デフピニオンギヤ(81)及び左右デフサイドギヤ(82a)(82b)をパイプ状のデフケース(83)に内設させ該ケース(83)に固設するスプロケット(84)をチェン(85)を介し前記遊転軸(78)の固定スプロケット(86)に連結させるデフ機構(87)と、右車軸(3)に摺動自在にスプライン嵌合させてフオーク(88)の操作でもってスプロケット(84)に継断自在に結合するデフロックである爪クラッチ(89)とを備え、前記デフロックレバー(9)の操作によってワイヤ(71)及びフオークシャフト(90)及びフオーク(88)を介しスプロケット(84)に爪クラッチ(89)を結合させるとき、車軸(3)と各ギヤ(81)(82a)(82b)をデフケース(83)と一体とさせて左右車軸(3)の回転差をなくして一体回転させると共に、爪クラッチ(89)とスプロケット(84)の結合解除時には左右車軸(3)間に回転差の発生するデフ機能を有するように構成している。
【0025】
またこの場合デフ機構(87)の入力部である入力スプロケット(84)に対し左側にパイプ形状のデフケース(83)、右側にデフロック用の爪クラッチ(89)を配設して、デフ機構(87)を小型コンパクトに形成して低コストとさせると共に、ミッションケース(2)の小型化を図ってトレッドも小さくして、作業幅の狭い作業にも適正に対応可能とさせるように構成している。
【0026】
さらに、前記デフケース(83)に固定する入力スプロケット(84)は、該スプロケット(84)位置で左車輪(3)にスプライン嵌合するカラー(91)の外周に回転自在に嵌合支持させると共に、スプロケット(84)のカラー(91)嵌合部より外側に前記爪クラッチ(89)に係合させるクラッチ係合部(89a)を形成して、デフ機構(87)の入力スプロケット(84)でデフロックする構成とすることによって、強度向上とデフロック機能の安定性を向上させると共に、デフ機構(87)の小型コンパクト化を図るように構成している。
【0027】
またさらに、ミッションケース(2)の左内壁面にベアリング(92)の外輪外周面を嵌合させると共に、該ベアリング(92)の内輪内周面にデフケース(83)の右端外周面を嵌合させてデフケース(83)の支持構造を簡略化してデフ機構(87)の小型コンパクト化を図るように構成している。
【0028】
また、前記ベアリング(92)は大径に設け、左デフサイドギヤ(82a)をベアリング(92)内輪の内側に配設して、ベアリング(92)の幅内にピニオンギヤ(81)及びデフケース(83)の一部とともに左デフサイドギヤ(82a)を組込んで、ベアリング(92)と左デフサイドギヤ(82a)とを略同一平面上に配置させる状態とさせてデフ機構(87)の小型コンパクトを図ってミッションケース(2)を小型に形成可能に構成している。
【0029】
さらに、前記ミッションケース(2)内には、入力軸(18)に設ける高速逆転ギヤ(93)と低速正転スプロケット(94)と、PTO変速軸(95)に遊転支持して正転スプロケット(94)にチェン(96)を介し連結する正転用遊転スプロケット(97)と、変速軸(95)にスプライン嵌合して前記逆転ギヤ(93)或いは遊転スプロケット(97)の内ギヤ(98)に択一的に結合させる作業変速ギヤ部(52)を構成する正逆転切換ギヤ(99)と、前記PTO軸(20)に遊転支持して変速軸(95)の固定スプロケット(100)にチェン(101)を介し連結させるPTO入力スプロケット(102)と、PTO軸(20)にスプライン嵌合して入力スプロケット(102)に爪クラッチ(103)を介し係脱自在に連結させるブレーキ板(104)と、爪クラッチ(103)の切時ブレーキ板(104)を圧接させてPTO軸(20)を制動する加圧板(105)と、前記PTOクラッチレバー(8)の操作によってフオークシャフト(106)を介しブレーキ板(104)を左右に摺動させ爪クラッチ(103)の入切を行うPTOクラッチフオーク(107)とを備え、伝動ケース(21)の伝動チェン(108)を介してPTO軸(20)にロータリ軸(23)を連結させ、ロータリ刃(24)を低速で正転させて耕耘作業を行う一方、ロータリ刃(25)を高速で逆転させて草刈作業を行うように構成している。
【0030】
また、2つの前記切換ギヤ(77)(99)を切換操作する単一の変速フオーク(109)を、ミッションケース(2)内まで臨ませる前記切換ロッド(61)に固設して、前記調高ハンドル(35)で作業機(22)の耕耘及び草刈高さ位置の2段階の切換えを行うときには、2つの切換ギヤ(77)(99)も同時に2段階に切換えて、耕耘時には切換ロッド(61)を右移動させてギヤ(75)(77)及び(98)(99)を結合状態とさせて走行及び作業速度を低速とさせると共に、草刈作業時には切換ロッド(61)を左移動させてギヤ(74)(77)及び(93)(99)を結合状態とさせて走行及び作業速度を高速とさせるように構成している。
【0031】
このように、走行輪(1)を有する機体に作業ロータリであるロータリ作業機(22)を装備させる管理機において、走行速度を変速する走行変速部である切換ギヤ(77)とロータリ速度を変速する作業変速部である切換ギヤ(99)とをミッションケース(2)内に備えると共に、これら切換ギヤ(77)(99)を同時に変速操作するもので、各種ロータリ作業の作業速度に適した走行速度で作業を行って作業性を向上させると共に、誤操作などによる作業速度と走行速度の不一致を防止して、作業精度を向上させることができる。
【0032】
また、作業機(22)と圃場間の距離を変更する作業高さ調節部材である調高ハンドル(35)でもって切換ギヤ(77)(99)の同時変速操作を行うもので、調高ハンドル(35)による作業機(22)の支持高さ変更時には作業速度と走行速度の同速変速も行って、耕耘或いは草刈など各種作業に適した作業高さと適正作業及び走行速度のもとで誤操作なく良好な作業を行うことができる。
【0033】
さらに、調高ハンドル(35)の調節段と走行及び作業速度の変速段を同一に設けたもので、耕耘或いは草刈時など作業機(22)の作業高さ変更時には作業及び走行速度も必ずその作業に適した速度に誤操作なく変速動作されて、操作性と作業性を向上させることができる。
【0034】
また、1本の切換ロッド(61)に単一の変速フオーク(109)を取付けた簡単な構成で、2つの切換ギヤ(77)(99)の同時切換えを行って、走行及び作業速度間にタイミングの遅れのない確実な変速を可能にできる。
【0035】
さらに、調高ハンドル(35)は操向ハンドル(5)を操作する運転側で容易に操作可能となると共に、作業高さ切換部材(44)で大巾な作業機(22)の高さ調節が、また前記ネジ軸(36)と結合子(34)の結合によって微小の高さ調節が行えて、作業機(22)の適正高さ位置にスムーズ且つ正確に配置させることができる。
【0036】
【発明の効果】
以上実施例から明らかなように本発明は、左右走行輪(1)に回転差を発生させるデフ機構(87)をミッションケース(2)に内設させた管理機において、デフ機構(87)の入力部(84)を中心として左右一側にデフケース(83)、他側にデフロック用の爪クラッチ(89)を配設したものであるから、デフ機構(83)を小型コンパクトなものとさせて、ミッションケース(2)の小型化を図って、トレッドも小さくして作業幅の狭い作業にも適正に対応させて作業の適応性を向上させることができるものである。
【0037】
また、ミッションケース(2)の内壁面にベアリング(92)を介してデフケース(83)の一側外径部を回転自在に支持させたものであるから、ミッションケース(2)内にデフケース(83)を簡潔に組込んでミッションケース(2)の小型コンパクト化を容易に可能とさせることができるものである。
【0038】
さらに、デフ機構(87)を構成する右デフサイドギヤ(82a)(82b)のうち一方のデフサイドギヤ(82a)をベアリング(92)と略同一平面上に配置させたものであるから、ミッションケース(2)内にデフケース(83)及びデフサイドギヤ(82a)などデフ機構(87)をコンパクトに組込んで、ミッションケースの小型化を容易に可能とさせることができるものである。
【図面の簡単な説明】
【図1】全体の側面図。
【図2】全体の平面図。
【図3】作業機の側面図。
【図4】作業機の平面図。
【図5】ロータリ刃部の側面説明図。
【図6】ゲージ輪の高さ調節説明図。
【図7】ゲージ輪の高さ切換部の側面説明図。
【図8】切換部の側面説明図。
【図9】切換部の背面説明図。
【図10】操向ハンドル部の平面説明図。
【図11】操向ハンドル部の側面説明図。
【図12】ミッションケースの断面説明図。
【図13】PTO変速部の説明図。
【図14】デフ機構部の説明図。
【図15】ミッション駆動系の側面説明図。
【図16】走行及び作業変速部の側面説明図。
【符号の説明】
(1) 走行輪
(2) ミッションケース
(82a)(82b) デフサイドギヤ
(83) デフケース
(84) 入力スプロケット(入力部)
(87) デフ機構
(89) 爪クラッチ
(92) ベアリング
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a walking-type management machine that performs, for example, middle plowing or plowing work.
[0002]
[Problems to be solved by the invention]
Conventionally, the differential mechanism used in this type of management machine is large, heavy, and expensive, and the transmission case inside the differential mechanism is inevitably large, increasing the size of the fuselage and the tread. As a result, there are inconveniences such as being able to appropriately handle only work with a wide work width.
[0003]
[Means for Solving the Problems]
Therefore, the present invention provides a control machine in which a differential mechanism for generating a rotational difference between the left and right traveling wheels is installed in the transmission case, and a claw clutch for a differential case on the left and right sides and a differential lock on the other side with the input portion of the differential mechanism as a center. To reduce the size of the transmission case, reduce the tread, reduce the tread, and properly handle work with a narrow work width to improve work adaptability. Is.
[0004]
In addition, the outer diameter part of the differential case is rotatably supported on the inner wall surface of the mission case via a bearing, and the differential case is simply incorporated into the mission case so that the mission case can be easily made compact and compact. Is.
[0005]
Furthermore, the Defusaido gear one of the left and right de Fusaidogiya so disposed on the bearing and substantially the same plane constituting the differential mechanism, incorporating a compact differential mechanism such as the differential case and differential side gear in a transmission case, the transmission case This makes it easy to reduce the size.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIGS. 1 to 5, a pair of left and right traveling wheels (1) are mounted on a transmission case (2) via an axle (3), and a hitch base (4) is fixed to the rear of the transmission case (2). The steering handle (5) base end is connected to the hitch stand (4) and the transmission case (2), the steering handle (5) is provided obliquely above the rear of the transmission case (2), the transmission lever (6), The main clutch lever deadman lever (7), PTO clutch lever (8), differential lock lever (9), etc. are attached to the loop type operation part (10) of the steering handle (5) and the upper surface of the transmission case (2) The engine (12) is mounted and fixed on a substantially horizontal surface (11) of the engine, and the hydraulic transmission (13) for continuously changing the output of the engine (12) is fixed to the right side surface of the rear portion of the transmission case (2). The input shaft (18) of the hydraulic transmission (13) is connected to the output shaft (14) of 11), and the output shaft (19) of the transmission (13) is connected via pulleys (15) (16) and a belt (17). ) Is connected to the axle (3).
[0007]
Further, the transmission case (2) is formed in a substantially L shape when viewed from the side, the rear side protrudes downward, the axle (3) is arranged at the lower part of the rear side of the transmission case (2), and the engine (11) A transmission (13) is disposed between the output shaft (14) and the axle (3), and the driving force of the engine (11) is transmitted from the upper side to the rear lower side to drive the traveling wheels (1). The PTO shaft (20) is disposed in front of the transmission (13) of (2), and the rotary work machine (22) is supported in front of the body through the case (2) and the transmission case (21).
[0008]
The rotary work machine (22) has a rotary shaft (23) and a rotary blade (24), and connects the rotary shaft (23) to the PTO shaft (20) via a transmission case (21), A plurality of cutting rotary blades (24) that are also used for mowing are attached to the rotary shaft (23), and the upper and left and right sides of each cutting rotary blade (24) are closed by the rotary cover (25) and the left and right side plates (26). (1) The cutting rotary blade (24) rotating in the same direction as the forward movement is cultivated by normal rotation, while the cutting rotary blade (24) is reversely rotated to perform the mowing operation.
[0009]
In addition, a post-work machine (27) is provided that allows the work machine (22) to perform the upright work at the same time as the tilling work, and a hitch pin (29) is provided on the rear hitch (28) fixed on the rear side of the hitch stand (4). The rear work machine (27) is detachably provided, and the rear work machine (27) is attached to the rear hitch (28) so that it can be moved up and down by rotating around the hitch pin (29), and the rear work machine (27) is lowered. It is landed and supported at the upright work position, or the rear work machine (27) is lifted behind the hitch base (4) and supported at the non-work position. A fuel tank (30) is provided on the rear side of the engine (11).
[0010]
As shown in FIG. 6, both left and right gauge rings (32) are attached by projecting both ends of the gauge frame (31) in a plan view to the front of the work machine (22), and the middle part of the gate frame of the gauge frame (31). The screw shaft (36) at the front end of the height adjustment handle (35) is connected to the connector (34) of the connection frame (33) fixed to the machine, and the height adjustment handle (35) is located on the right side of the center line of the fuselage. Arranged in the front-rear direction, the rear end side of the handle (35) is extended to a position below the steering handle (5), and the handle operating portion (37) at the rear end of the handle (35) at the steering handle (5) position. ) Can be rotated. Then, the gate-shaped support leg portion (31a) of the gauge frame (31) is formed in a substantially L shape in a side view, and is rotatably attached to the left and right side plates (26) of the rotary cover (25) via the support shaft (38). An L-shaped corner of the support leg (31a) is held in contact with the support (39) from above, and the gauge frame (31) is centered on the support (39) when the elevation handle (35) is rotated. And the gauge wheel (32) is moved up and down.
[0011]
Further, the front cover (40) having a plan view portal shape is provided in front of the rotary cover (25), and both ends of the front cover (40) are fixed to the inside of the front end of the support leg portion (31a), thereby When adjusting the ground height of (32), the front cover (40) is also moved together with the gauge wheel (32). For example, during the tilling work for lowering the work implement (22), the front cover is attached to the work implement (22). (40) is set to the raised position to avoid interference with the field scene, and the front cover (40) is set to the lowered position for the work machine (22) during the mowing work to raise the work machine (22). Further, the working machine (22) such as grass and pebbles is configured to prevent scattering forward.
[0012]
As shown in FIG. 5, the claw base (41) is fixed to the rotary shaft (23), and the rotary blade (24) is rotatably supported via the support shaft (42) on the claw base (41). While rotating the shaft (23), the rotary blade (24) is protruded in the radial direction by centrifugal force, and the rotary blade (24) that absorbs the impact by rotating around the support shaft (42) is used to cut the grass and perform the mowing. When the rotary stopper (43) is fixed to the claw base (41) and the rotary shaft (23) is rotated forward and tilled, the rotary blade (24) is brought into contact with the backward stopper (43) to prevent The rotary blade (24) is fixedly supported in a backward tilted posture, and a receding angle is formed via the retreat stopper (43) to support the rotary blade (24), thereby reducing the tillage resistance and reducing the tilling force (depth). Configured to ensure .
[0013]
As shown in FIG. 6 to FIG. 9, a working height switching member (44) for switching the working machine (22) to two stages of tillage and mowing height positions is connected to the middle of the elevation handle (35). The lower end of the switching member (44) is fixed to the shaft pipe (45) outside the PTO shaft (20) connecting the transmission case (2) and the transmission case (21), and is opened in the front-rear direction of the switching member (44). A handle receiver (50) for forming a mowing / neutral / plowing notch (47) (48) (49) on the lower side of the front end, middle and rear end of the long hole (46), and inserting and fixing the handle (35) When the round shaft portions (50a) on both sides are engaged with the notches (47) (49), the handle (35) is largely moved back and forth to engage the receiver (50) with the mowing notch (47). If so, move the gauge wheel (32) to the down position and By rotating the operating portion (37), the gauge wheel (32) is changed steplessly in the downward movement position to reduce the cutting depth of the working machine (22) to 1 cm, or the ground height to 30 mm or While performing a high mowing operation or a moving operation of 40 mm, when the receiving body (50) and the tilling notch (49) are engaged, the gauge ring (32) is set to the upward movement position and the handle operating portion (37 ) By rotating the gauge wheel (32) steplessly in the upward movement position to perform a tilling operation or the like in which the working machine (22) has a plowing depth of 10 cm or 5 cm.
[0014]
Further, when the height adjustment handle (35) is switched between the mowing notch (47) or the tilling notch (49), the traveling transmission gear portion (51) and the working transmission gear portion (52) in the mission case (2) are also provided. At the same time, the shift is switched, and the swinging cylinder shaft (54) is rotatably supported on the support shaft (53) below the neutral notch (48) of the switching member (44). Further, the base ends of the switching plate (55) and the swing arm (56) are fixed. The switching plate (55) has a lower base end fixed to the cylindrical shaft (54) substantially in parallel with the switching member (44), and an upper flat surface (55a) is formed on the lower surface of the long hole (46). A neutral groove (57) having substantially the same shape that matches the neutral notch (48) is formed at the center, and both ends of the flat surface (55a) are extended to the positions of grass cutting and tilling notches (47) (49), When the round shaft portion (50a) of the handle (35) is engaged with the neutral notch (48), the neutral groove (57) of the switching plate (55) is also engaged with the round shaft portion (50a) so that the flat surface (55a) is engaged. While maintaining the switching plate (55) in a neutral posture with the handle in a horizontal position, the round shaft portion (35a) is flat on the flat surface (55a) when the handle (35) is engaged with the mowing and tilling notches (47) (49). The both ends are pressed and the switching plate (55) is rotated left and right around the support shaft (53). To have.
[0015]
Further, a portal plate-shaped swing plate (59) is swingable to the left and right through a swing shaft (58) on a fixed cradle (57) below the switching member (44) of the shaft pipe (45). A shift switching rod (1) connected to one end side of the swing plate (59) and the swing arm (56) via a rod (60) and connected to the gear portions (51) (52). 61) is connected to the elongated hole (59a) on the other end side of the swing plate (59) via the engaging shaft (62), and the receiving body (50) of the handle (35) is connected to the switching member. (44) When mowing and tilling notches (47) and (49) are positioned, the rocking plate (59) is swung around the shaft (58), and the switching rod (61) is moved in a substantially horizontal direction. The gear portions (51) and (52) are switched.
[0016]
Further, as shown in FIGS. 3 to 5, the lower part on the front side of the transmission case (2) is formed on an arc surface (2a) along the outer peripheral surface of the rotary cover (25), and a rotary cover (2a) is formed on the arc surface (2a). 25) To fix the latter half of the outer peripheral surface and to support both ends of the rotary shaft (23) with the left and right side plates (26) of the rotary cover (25) to reduce the number of parts and assembly man-hours, thereby reducing costs. It is configured.
[0017]
Further, a side cover (64) is attached to the outside of the side plate (26) via a bolt (63) so as to be removable and rotatable about the rotary shaft (23). The side cover (64) has a shape. It is formed in a sector shape, and the outer diameter of the outer circumference of the arc of the side cover (64) is smaller than the outer diameter of the outer circumference of the arc of the rotary cover (25), and the arc-shaped 2 centering on the rotary shaft (23). A long hole (65) for two bolts (63) is opened in the side cover (64), and the side cover (64) is attached to the side plate (26) via the long hole (65) and the bolt (63). When plowing the working machine (22) having a low ground height (working height) that moves up the wheel (32), the side cover (64) is moved upward as shown by the phantom line in FIG. 3 to form the side plate (26). While the cover (64) is housed inside, the gauge wheel (32) When mowing the moving work machine (22) having a high ground clearance, the side cover (64) is moved downward as shown by the solid line in FIG. 3, the side cover (64) is projected from the side plate (26), and the side plate ( 26) The rotary blade (25) is protected by covering a large gap formed between the lower end portion and the field with a cover (64).
[0018]
In this way, in the management machine in which the machine body having the traveling wheels (1) is equipped with the rotary work machine (22) as the work rotary, the left and right side plates (26) of the rotary cover (25) covering the upper side of the work machine (22). The side cover (64) is rotatably provided on the right and left plates (26) of the rotary cover (25) only when mowing the working machine (22) at a high working height (ground height). When the blade (24) cannot be properly protected, the gap between the left and right side plates (26) and the field is covered with the side cover (64), and the work implement (22) is covered with the rotary cover (25) and the side cover (64). Good work with proper protection can be performed.
[0019]
Moreover, the shape of the side cover (64) is formed in a fan shape, and the outer diameter shape of the side cover (64) is smaller than the outer diameter shape of the left and right side plates (26) of the rotary cover (25). During normal work that does not require the side cover (64), the side cover (64) is stored in the shape of the left and right side plates (26) of the rotary cover (25), and the cover (64) is obstructed during the work. In addition, the work machine (22) can be appropriately protected by maximally acting when the cover (64) is necessary for mowing work or the like.
[0020]
Furthermore, the rotation center of the side cover (64) is provided near the rotary shaft (23) or the rotary shaft (23), which is the rotation center of the work machine (22), and the side cover (64) is not required. When working, etc., it is compactly housed in the substantially semicircular shape of the left and right side plates (26) of the rotary cover (25), and when the side cover (64) is necessary, it is in a state along the arc outer diameter line of the left and right side plates (26). By appropriately projecting the side cover (64) from the left right plate (26), it is possible to properly protect the work machine (22).
[0021]
Further, an upper end of the rear cover (67) is rotatably attached to the rear end of the rotary cover (25) via a hinge (66), and a rubber plate (68) having a short vertical dimension is attached to the lower end of the cover (67). Even if the distance between the rotary cover (25) and the field scene changes greatly, the rear cover (67) can be coped with well by fixing and the vertical dimension of the rubber plate (68) is shortened. It is comprised so that the winding to the machine (22) side may be prevented.
[0022]
As shown in FIGS. 10 and 11, the main clutch (69), which is the tension clutch of the belt (17) that transmits the output of the engine (14) to the transmission (13), is turned on and off via the clutch wire (70). The deadman lever (7) and the differential mechanism (87) installed in the mission case (2) are turned on and off through the wire (71), and the differential lock lever (9) is formed in a loop shape and the steering handle Provided in the loop type operation part (10) of (5), the left and right outer widths of the levers (7) and (9) are provided smaller than the left and right width side widths of the handle operation part (10), and the levers are provided on the handle (5). (7) The lever rotation shafts (72) and (73) for connecting the base ends of (9) are connected to the front and rear of the lower surface of the handle (5), and the deadman lever (7) lever operation portion (7a in the center lateral direction) ) Hand The lever operating portion (9a) in the central lateral direction of the differential lock lever (9) is disposed below the operating portion (10) and below the handle operating portion (10), and the rear side of the steering handle (5) or left and right The distance from any of the operation positions on both sides to the levers (7) and (9) is made substantially constant so that the levers (7) and (9) can be easily operated.
[0023]
Further, as shown in FIG. 11, when the deadman lever (7) where the main clutch (69) is engaged and when the differential lock lever (9) is turned off (unlocked), the deadman lever (7) The operation portion (7a) of the differential lock lever (9) is brought closer to the center on the lower surface side of the handle operation portion (10). When the levers (7) and (9) are required to be operated, the levers (7) and (9) can be operated together with the handle operating unit (10) without releasing the hand from the handle operating unit (10) each time. 9a) is easily gripped together to engage the main clutch (69) and turn off the diff lock, while the deadman lever (7) and the diff lock lever (9) move away from the handle operating portion (10). During movement and downward movement off the main clutch (69), it is configured so as to interrupt the work differential lock as input.
[0024]
As shown in FIGS. 12 to 16, in the transmission case (2), there are high and low speed gears (74) (75) provided on the output shaft (19) of the hydraulic transmission (13), and a switching shaft (76). A pair of reduction gears that always connect the high and low speed switching gear (77) that is provided and constitutes the traveling transmission gear portion (51), and the idler shaft (78) that is loosely fitted to the output shaft (19) and the switching shaft (76). (79) and (80), and the differential pinion gear (81) and the left and right differential side gears (82a) and (82b) are installed in the pipe-shaped differential case (83), and the sprocket (84) fixed to the case (83) is connected to the chain. The diff mechanism (87) is connected to the fixed sprocket (86) of the idle shaft (78) via (85), and the right axle (3) is slidably spline-fitted and operated by the fork (88). With sprocket (84) A claw clutch (89) which is a differential lock coupled to the sprocket (84) via the wire (71), the fork shaft (90) and the fork (88) by the operation of the diff lock lever (9). 89), the axle (3) and the gears (81) (82a) (82b) are integrated with the differential case (83) so as to eliminate the rotational difference between the left and right axles (3), and to rotate the claws. The clutch (89) and the sprocket (84) are configured to have a differential function that generates a rotational difference between the left and right axles (3) when the coupling is released.
[0025]
Further, in this case, a pipe-shaped differential case (83) is provided on the left side with respect to the input sprocket (84), which is an input portion of the differential mechanism (87), and a differential lock pawl clutch (89) is provided on the right side. ) Is made compact and low-cost, and the mission case (2) is downsized to reduce the tread so that it can properly handle work with a narrow working width. .
[0026]
Further, the input sprocket (84) fixed to the differential case (83) is rotatably fitted and supported on the outer periphery of the collar (91) that is spline-fitted to the left wheel (3) at the position of the sprocket (84). A clutch engaging portion (89a) for engaging with the claw clutch (89) is formed outside the collar (91) fitting portion of the sprocket (84), and the diff lock is made by the input sprocket (84) of the differential mechanism (87). With this configuration, the strength and stability of the differential lock function are improved, and the differential mechanism (87) is made compact and compact.
[0027]
Furthermore, the outer ring outer peripheral surface of the bearing (92) is fitted to the left inner wall surface of the transmission case (2), and the right end outer peripheral surface of the differential case (83) is fitted to the inner ring inner peripheral surface of the bearing (92). Thus, the support structure of the differential case (83) is simplified to make the differential mechanism (87) compact and compact.
[0028]
The bearing (92) is provided with a large diameter, and the left differential side gear (82a) is disposed inside the inner ring of the bearing (92) so that the pinion gear (81) and the differential case (83) are within the width of the bearing (92). The left differential side gear (82a) is incorporated together with a part of the bearing, and the bearing (92) and the left differential side gear (82a) are arranged on substantially the same plane so that the differential mechanism (87) is compact and compact. The mission case (2) can be formed in a small size.
[0029]
Further, in the transmission case (2), a high-speed reverse gear (93) provided on the input shaft (18), a low-speed normal rotation sprocket (94), and a PTO transmission shaft (95) are supported in a free-rotating manner by rotating normally. (94) through a chain (96) and a forward rotating idle sprocket (97), and a spline fitting on the transmission shaft (95) and the reverse gear (93) or the internal sprocket (97) internal gear ( 98) and a forward / reverse switching gear (99) that constitutes a work transmission gear portion (52) that is selectively coupled to the PTO shaft (20) and a fixed sprocket (100) of the transmission shaft (95). ) And a PTO input sprocket (102) to be connected via a chain (101) and a spline fitting to the PTO shaft (20) and connected to the input sprocket (102) via a pawl clutch (103). By operating the brake plate (104), the pressure plate (105) that presses the brake plate (104) when the pawl clutch (103) is disengaged to brake the PTO shaft (20), and the PTO clutch lever (8). A PTO clutch fork (107) that slides the brake plate (104) to the left and right via the fork shaft (106) to turn the claw clutch (103) on and off, and the transmission chain (108) of the transmission case (21) The rotary shaft (23) is connected to the PTO shaft (20) via the rotary blade (24), and the rotary blade (24) is rotated forward at low speed to perform the tilling work, while the rotary blade (25) is reversed at high speed to perform the mowing work. It is configured as follows.
[0030]
In addition, a single speed change fork (109) for switching the two switching gears (77) (99) is fixed to the switching rod (61) facing the inside of the transmission case (2), and the adjustment is performed. When switching the working machine (22) with the high handle (35) in two stages of plowing and mowing height position, the two switching gears (77) (99) are also switched into two stages at the same time. 61) is moved to the right to bring the gears (75) (77) and (98) (99) into the coupled state to reduce the traveling and working speed, and at the time of mowing work, the switching rod (61) is moved to the left. The gears (74) (77) and (93) (99) are brought into a coupled state so as to increase the traveling and working speed.
[0031]
As described above, in the management machine in which the machine body having the traveling wheel (1) is equipped with the rotary working machine (22) that is the working rotary, the switching gear (77) that is the traveling transmission unit that changes the traveling speed and the rotary speed are changed. The transmission gear (99), which is a work transmission unit, is provided in the transmission case (2), and the switching gears (77) and (99) are operated at the same time. It is possible to improve workability by improving the workability by performing work at a speed and preventing a mismatch between the work speed and the traveling speed due to an erroneous operation or the like.
[0032]
Further, the height adjustment handle (35), which is a work height adjustment member for changing the distance between the work machine (22) and the field, performs the simultaneous shifting operation of the switching gears (77) and (99). When the support height of the work machine (22) is changed by (35), the work speed and the traveling speed are also changed at the same speed, and erroneous operation is performed under the working height, proper work and traveling speed suitable for various work such as tillage or mowing. It is possible to perform a good work without any problems.
[0033]
Further, the adjustment stage of the leveling handle (35) and the shift stage of traveling and working speed are provided in the same manner, and the working and traveling speed are always changed when the working height of the working machine (22) is changed, such as during plowing or mowing. A speed change operation is performed at a speed suitable for work without any erroneous operation, and operability and workability can be improved.
[0034]
In addition, with a simple configuration in which a single speed change fork (109) is attached to one switching rod (61), the two switching gears (77) and (99) are simultaneously switched, so that the travel speed and the working speed can be reduced. Reliable shifting without timing delay is possible.
[0035]
Further, the height adjustment handle (35) can be easily operated on the driving side for operating the steering handle (5), and the height of the large work machine (22) can be adjusted by the work height switching member (44). However, minute height adjustment can be performed by coupling the screw shaft (36) and the connector (34), and the working machine (22) can be smoothly and accurately disposed at an appropriate height position.
[0036]
【The invention's effect】
As is clear from the above embodiments, the present invention is a management machine in which a differential mechanism (87) for generating a rotational difference between the left and right traveling wheels (1) is installed in the transmission case (2). Since the differential case (83) is disposed on the left and right sides around the input section (84), and the differential lock pawl clutch (89) is disposed on the other side, the differential mechanism (83) is made compact and compact. The mission case (2) can be reduced in size, the tread can be reduced, and the work adaptability can be improved by appropriately dealing with the work having a narrow work width.
[0037]
Further, since one side outer diameter portion of the differential case (83) is rotatably supported on the inner wall surface of the mission case (2) via the bearing (92), the differential case (83 ) In a simple manner, the mission case (2) can be easily made compact and compact.
[0038]
Furthermore, since those were arranged on substantially the same plane as the left and right de Fusaidogiya constituting the differential mechanism (87) (82a) bearing one of Defusaido gear (82a) of (82b) (92), the transmission case (2) A differential mechanism (87) such as a differential case (83) and a differential side gear (82a) can be incorporated in a compact manner, so that the transmission case can be easily downsized.
[Brief description of the drawings]
FIG. 1 is an overall side view.
FIG. 2 is an overall plan view.
FIG. 3 is a side view of the work machine.
FIG. 4 is a plan view of the work machine.
FIG. 5 is an explanatory side view of a rotary blade part.
FIG. 6 is an explanatory diagram of height adjustment of a gauge ring.
FIG. 7 is an explanatory side view of the height switching portion of the gauge wheel.
FIG. 8 is an explanatory side view of a switching unit.
FIG. 9 is an explanatory rear view of the switching unit.
FIG. 10 is an explanatory plan view of a steering handle portion.
FIG. 11 is an explanatory side view of the steering handle portion.
FIG. 12 is a cross-sectional explanatory view of a mission case.
FIG. 13 is an explanatory diagram of a PTO transmission unit.
FIG. 14 is an explanatory diagram of a differential mechanism unit.
FIG. 15 is an explanatory side view of a mission drive system.
FIG. 16 is an explanatory side view of a travel and work transmission unit.
[Explanation of symbols]
(1) Running wheel (2) Mission case (82a) (82b) Differential side gear (83) Differential case (84) Input sprocket (input part)
(87) Differential mechanism (89) Claw clutch (92) Bearing

Claims (1)

左右走行輪に回転差を発生させるデフ機構をミッションケースに内設させた管理機において、前記デフ機構の入力部を中心として左右一側にデフケース、他側にデフロック用の爪クラッチを配設し、前記ミッションケースの内壁面にベアリングを介して前記デフケースの一側外径部を回転自在に支持させるとともに、前記デフ機構を構成する左右デフサイドギヤのうち一方のデフサイドギヤを前記ベアリングと略同一平面上に配置させたことを特徴とする管理機。In the management machine is provided inside the differential mechanism to be generated in the transmission case rotation difference between the left and right travel wheels, disposed nails clutch for differential lock in one of the left and right side differential case, the other side around the input portion of the differential mechanism The transmission case is rotatably supported on one side outer diameter portion of the differential case via a bearing, and one of the left and right differential side gears constituting the differential mechanism is substantially flush with the bearing. A management machine characterized by being placed above .
JP2000118975A 2000-04-20 2000-04-20 Management machine Expired - Fee Related JP4388201B2 (en)

Priority Applications (1)

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JP2000118975A JP4388201B2 (en) 2000-04-20 2000-04-20 Management machine

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Application Number Priority Date Filing Date Title
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Publications (2)

Publication Number Publication Date
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JP4388201B2 true JP4388201B2 (en) 2009-12-24

Family

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Country Link
JP (1) JP4388201B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100823426B1 (en) * 2007-01-05 2008-04-18 주식회사 아세아텍 Clutch assembly for walking type movable agricultural machine
CN104541619A (en) * 2014-12-24 2015-04-29 新昌县捷马农机科技有限公司 Working shaft assembly for cultivator

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