In the solution, the drive train consisting of the planetary gear train and 4 gear pairs is applied to realize continuous transmission under 7 working modes.
该方案采用了行星轮系和4组齿轮副的传动机构，实现了驱动机构在7种工作模式下的连续传动。
2
Study of the sealed circulating power in planetary gear train plays a very important role in the rational design of the transfer structure.
行星轮系中封闭功率问题的研究，对其传动结构的合理设计有着重要作用。
3
About the problem how to calculate efficiency of differential gear train, in this paper, there is a new idea of "extending a differential gear train to an equivalent closed planetary gear train".