PROBLEM TO BE SOLVED: To solve a problem in a traveling/driving unit of a working vehicle operated by changing the rotation numbers of right and left traveling/driving parts that pump axis of non step hydraulic speed changer is unparallel with engine output axis of a vertically placed engine, thus a large direction changing mechanism is required to transmit driving power to the pump axis.SOLUTION: Center sections 32 are folded at least one site to form lateral extending part 32La, 32Ra and longitudinal extending parts 32Lb, 32Rb. Deceleration devices 34 are equipped on outside with interposed longitudinal extending parts 32Lb, 32Rb. Hydraulic motors 33 are equipped inside. An output shaft 16 of the deceleration device 34 and motor shaft 45 extends in lateral direction on the same criterion shaft line 52. Hydraulic pumps 31 are equipped on the lateral extending parts 32La, 32Ra. A pump shaft 35 extends in forth and back direction. Driving power is output from the output shaft 16. The pump shaft 35 may be arranged in parallel with an engine output shaft 11a. In addition, each of the hydraulic pumps 31 is constructed separately from a driving power dividing part 25.

    【課題】作業車両で左右の走行駆動部の回転数等を変えて操舵する走行駆動ユニットは、油圧式無段変速装置を有するが、そのポンプ軸が縦置きエンジンのエンジン出力軸等と平行でないため、ポンプ軸に動力を伝達するのに大きな方向転換機構が必要であった。【解決手段】センタセクション32を少なくとも一箇所で屈曲させ、横延出部32La・32Raと縦延出部32Lb・32Rbを形成し、縦延出部32Lb・32Rbを挟んで外側に減速装置34を装着し、内側に油圧モータ33を装着し、減速装置34の出力軸16とモータ軸45を同じ基準軸線52上で左右方向に延設すると共に、横延出部32La・32Raに油圧ポンプ31を装着してポンプ軸35を前後方向に延設して、出力軸16から走行動力を出力しつつ、ポンプ軸35をエンジン出力軸11aに対して平行配置可能とし、更に、各油圧ポンプ31を動力分岐部25とは別体に構成した。【選択図】図3


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    Title :

    TRAVELING/DRIVING UNIT OF WORKING VEHICLE


    Additional title:

    作業車両の走行駆動ユニット


    Contributors:

    Publication date :

    2015-10-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F16H Getriebe , GEARING



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