To make the length of an operation oil passage short for controlling a front wheel clutch and a front wheel acceleration clutch, in a travel transmission device for tractor which includes the front wheel clutch and the front wheel acceleration clutch that enable the presentation of a two-wheel drive state, a front-rear wheel constant velocity four-wheel drive state and a front wheel acceleration four-wheel drive state.SOLUTION: A front wheel clutch 40 and a front wheel acceleration clutch 60 are supported by a front wheel transmission shaft 29. Between the front wheel clutch 40 and the front wheel acceleration clutch 60, a holder 70B for supporting the front wheel transmission shaft 29 is provided. A first operation oil passage 91 for switching-operation of the front wheel clutch 40 is formed across the holder 70B and the front wheel transmission shaft 29. A second operation oil passage 94 for switching-operation of the front wheel acceleration clutch 60 is formed across the holder 70B and the front wheel transmission shaft 29.SELECTED DRAWING: Figure 3

    【課題】2駆状態、前後輪等速の4駆状態、前輪増速の4駆状態の現出を可能にする前輪クラッチ及び前輪増速クラッチを備えるトラクタの走行伝動装置において、前輪クラッチ及び前輪増速クラッチを操作する操作油路の長さを短く済ませる。【解決手段】前輪クラッチ40及び前輪増速クラッチ60が前輪伝動軸29に支持されている。前輪クラッチ40と前輪増速クラッチ60との間において、前輪伝動軸29を支持するホルダー70Bが備えられている。前輪クラッチ40を切り換え操作する第1操作油路91がホルダー70Bと前輪伝動軸29とに亘って穿設されている。前輪増速クラッチ60を切り換え操作する第2操作油路94がホルダー70Bと前輪伝動軸29とに亘って穿設されている。【選択図】図3


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    Title :

    TRAVEL TRANSMISSION DEVICE FOR TRACTOR


    Additional title:

    トラクタの走行伝動装置


    Contributors:

    Publication date :

    2020-10-29


    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 / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF







    TRAVEL TRANSMISSION DEVICE FOR TRACTOR

    SONODA SHUNSUKE / TSUJI KENICHIRO / TAKEMOTO HIROKI | European Patent Office | 2023

    Free access