Abstract: This paper covers the set-up of the space coordinate axis of the ring-fork U-joint,and through the analysis of the additional moment in the ring-fork U-joint it presents how the value of the additional moment is obtained.

• 文摘:本文用空间解析几何法建立了环叉式万向节的空间坐标系，并对环叉式万向节的附加力矩进行分析，得出了附加力矩的数学表达式。