To provide a work machine traction device, a work machine steering device, and a work machine comprising them, which can suppress pitching of the work machine caused by transmission of vertical vibration of a tractor.SOLUTION: A work machine traction device comprises: a left-right rotation support shaft 4 provided at a tip of a work machine 1 with its axis oriented in a substantially vertical direction; a work machine side hitch 5 supported rotatably in a left-right direction on the left-right rotation support shaft 4; a vertical rotation support shaft 6 provided at a tip of the work machine side hitch 5 with its axis orthogonal to a longitudinal direction of the work machine side hitch 5 and oriented in a substantially horizontal direction; a tractor side hitch 7 supported on the vertical rotation support shaft 6 so as to be rotatable at a substantially central position in the longitudinal direction; a left-right steering hydraulic cylinder 8 that horizontally steers the work machine 1 by expanding and contracting; and a vertical vibration buffer member 9 that buffers vertical vibration of the tractor side hitch 7.SELECTED DRAWING: Figure 4

    【課題】 トラクタの上下振動が伝わることにより発生する作業機のピッチングを抑制することのできる作業機牽引装置、作業機操舵装置およびこれらを備えた作業機を提供する。【解決手段】 作業機1の先端にその軸線を略垂直方向に向けて設けられる左右回動支持軸4と、この左右回動支持軸4に左右方向に回動自在に支持される作業機側ヒッチ5と、この作業機側ヒッチ5の先端にその軸線を当該作業機側ヒッチ5の長手方向に直交させて略水平方向に向けて設けられる上下回動支持軸6と、この上下回動支持軸6にその長手方向の略中央位置を回動自在に支持されるトラクタ側ヒッチ7と、伸縮することで作業機1を左右方向に操舵させる左右操舵油圧シリンダ8と、トラクタ側ヒッチ7の上下方向の振動を緩衝する上下振動緩衝部材9とを有する。【選択図】 図4


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    Title :

    WORK MACHINE TRACTION DEVICE, WORK MACHINE STEERING DEVICE, AND WORK MACHINE COMPRISING THE SAME


    Additional title:

    作業機牽引装置、作業機操舵装置およびこれらを備えた作業機


    Contributors:

    Publication date :

    2020-01-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60D Fahrzeugverbindungen , VEHICLE CONNECTIONS / A01B SOIL WORKING IN AGRICULTURE OR FORESTRY , Bodenbearbeitung in Land- oder Forstwirtschaft / B62D MOTOR VEHICLES , Motorfahrzeuge



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