The invention belongs to the technical field of automobile parts, and particularly relates to a drive axle speed reducer shell and a main speed reducer assembly. A drive axle speed reducer shell comprises a shell body, a guide bearing seat is fixed in the shell body, a plurality of longitudinally-arranged reinforcing ribs A are fixed on the inner wall of the shell body between the upper side face of a guide bearing seat supporting face of the guide bearing seat and the lower surface of an upper flange face, the reinforcing ribs A extend in the axial direction, and the two ends of each reinforcing rib A are fixed on the guide bearing seat and the upper flange face respectively. Compared with the prior art, the bearing seat has the technical effects that the reinforcing ribs extend to the upper flange face from the bearing seat supporting face, the reinforcing ribs are optimized to be connected with a differential bearing hole and a reducer shell, the rigidity of the reducer shell is improved, deformation of a guide bearing hole when a gear is loaded is reduced, the reverse dragging torque of a main reducer is improved, and meanwhile the transmission error of the gear is reduced; and the NVH performance is improved.

    本发明属于汽车零部件技术领域,具体涉及的是一种驱动桥减速器壳及主减速器总成。一种驱动桥减速器壳,包括壳体,壳体内固定导向轴承座,导向轴承座的导向轴承座支撑面的上侧面与上法兰面的下表面之间的壳体内壁上固定多个纵向设置的加强筋A,加强筋A沿着轴向延伸,其两个端分别固定在导向轴承座、上法兰面上。相对于现有技术,本发明的技术效果为,本发明设有的加强筋从轴承座支撑面延伸到上法兰面,优化加强筋连接差速器轴承孔与减壳,提升减壳刚度,减小齿轮受载时导向轴承孔的变形,提升主减速器的反拖扭矩,同时降低齿轮的传递误差,提升NVH性能。


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    Title :

    Drive axle speed reducer shell and main speed reducer assembly


    Additional title:

    驱动桥减速器壳及主减速器总成


    Contributors:
    LIU GUORUI (author) / YU NINGNING (author) / QUAN SHIHUA (author) / LIANG ZHEN (author)

    Publication date :

    2025-04-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F16H Getriebe , GEARING / 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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