弯板滚子链在挖掘机、牙轮钻机等重型矿山机械上得到广泛的应用。本文根据这类链条的结构特点,分析其四种零件有关尺寸分别与单节节距和链长组成的尺寸链。文中列出了单节节距和链长的尺寸链图,阐述了用概率法解尺寸链的过程,并在此基础上提出了相应的计算公式。 Bending roller chain in excavators, cone drills and other heavy mining machinery has been widely used. Based on the structural characteristics of this type of chain, this paper analyzes the size chain of the four kinds of parts with single pitch and chain length respectively. In this paper, the size chain diagram of single pitch and chain length is listed, and the process of solving the size chain by the probability method is expounded. Based on this, a corresponding calculation formula is proposed.