The invention relates to a two-gear four-wheel hydraulic stepless variable speed drive axle assembly for a large harvester. The two-gear four-wheel hydraulic stepless variable speed drive axle assembly comprises a hydraulic variable pump located on a front axle and used for driving a quantitative hydraulic motor. A quantitative motor output shaft is connected with a gearbox power input shaft. A gearbox power output shaft is connected with a wheel edge speed reducer input shaft through a differential mechanism assembly. A hydraulic brake assembly is arranged on a transmission shaft in the middle of a gearbox. The two-gear four-wheel hydraulic stepless variable speed drive axle assembly is characterized in that the hydraulic variable pump is connected with the quantitative hydraulic motor through a front axle antiskid valve, the front axle antiskid valve is connected with a switch through an electromagnetic valve, and the hydraulic variable pump is connected with a cycloid motor of a rear axle through a four-drive control valve. The two-gear four-wheel hydraulic stepless variable speed drive axle assembly is easy, reliable and timely to operate and control, the stepless speed change and reverse drive of two drive axle assemblies can be achieved, the hydraulic system is kept at certain working pressure, and therefore rear wheels of the harvester can still drive the whole harvester to walk.


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    Title :

    Two-gear four-wheel hydraulic stepless variable speed drive axle assembly for large harvester


    Contributors:
    SHA DEWEN (author) / LUO ZHENHUA (author) / FEI QIANGHAI (author) / QIAN LIANG (author)

    Publication date :

    2016-01-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    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



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