The invention provides an auxiliary drive axle and an engineering vehicle, and the auxiliary drive axle comprises two wheel ends which are used for connecting tires; the speed reducer assembly is located between the two wheel ends, the speed reducer assembly comprises a power source and a power switching assembly, an output shaft of the power source is connected with a first-stage driving gear meshed with a first-stage driven gear, and the power switching assembly reciprocates between the meshing position and the disengaging position of the first-stage driven gear; and the wheel end is connected with a second-stage driven gear meshed with the second-stage driving gear through a half shaft and a differential mechanism, and is matched with the second-stage driving gear to connect or cut off transmission. By integrating the speed reducer assembly and the differential mechanism, an external gearbox is not needed, direct driving connection with a power source can be achieved, the driving function is achieved, the arrangement structure of an engineering vehicle can be improved, a gearbox and a transmission shaft for connection in the prior art are omitted, the length of a rear overhang is shortened, the trafficability of the vehicle is improved, and the weight of the whole vehicle is reduced.

    本发明提供一种辅助驱动桥及工程车辆,所述辅助驱动桥包括:两个轮端,用于连接轮胎;减速器总成,位于两个所述轮端之间,所述减速器总成包括动力源和动力切换组件,所述动力源的输出轴连接有和一级从动齿轮啮合的一级主动齿轮,所述动力切换组件在所述一级从动齿轮上的啮合位置和脱离位置之间往复运动,并配合二级主动齿轮连接或切断传动,所述轮端通过半轴、差速器和与所述二级主动齿轮啮合的二级从动齿轮连接。本发明通过集成减速器总成和差速器,不需外接变速箱,可以直接与动力源驱动连接,实现驱动功能,可改善工程车辆布置结构,取消现有技术中的变速箱及连接用传动轴,缩短的后悬长度,改善了车辆的通过性,降低了整车重量。


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    Title :

    Auxiliary drive axle and engineering vehicle


    Additional title:

    辅助驱动桥及工程车辆


    Contributors:
    YANG GANG (author) / YANG FENG (author) / LIU SIQING (author)

    Publication date :

    2022-04-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66C Krane , CRANES / F16H Getriebe , GEARING



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