重型汽车电动轮的制造精度分析与对策和结构改进（二）

Manufacturing accuracy technology and structure improvement of motorized wheel of heavy truck (Part Ⅱ)

在文献［１」的基础上，给出了按随机装配方法设计浮动量的核核条件，以避免均载失效；并进一步提出采用分组组件中对应零件有向装配的方法作为对策，使浮动量设计趋于合理。为了克服结构上的根本弱点，又提出以内齿圈浮动作结构改进，使均载路线最短，浮动量设计最优化，从而使产品结构性能达到最优。

Based on the analysis of the manufacturing accuracy of the motoriged wheel ofheavy truck in Part Ⅰ, a condition to avoid the load sharing failure is derived for designers in this paper. A more sophisticated method, the directional subassembly, is suggested here to achieve high quality of the wheel products. For overcomming the weakness ofabove-mentioned structure, a new structure with the annular gear self-centering insteadof the sun gear self-centering is recommended, that will make the error transformed reversely from the high speed reduetion level to the low speed reduction level, then reduced by the planetary gear lever ratio times to such a negligible extent. So that the suffie lent offset for self-centering is minimized, the load sharing route becomes the shortest, then the structure of the wheel can be considered optimal.