本文比较系统地分析对比了现有各种链传动中心距的计算方法,结合石油钻机链传动中心距不可调整、较难设置张紧轮和同一中心距上经常装有几挂平行链传动的特点,指出用渐开线函数法来设计计算中心距,不仅方便省时,而且精确度比较高。文中提供有必要的表格数据和电算框图及其各种使用形式。 This paper systematically analyzes and compares the existing methods for calculating the center distance of chain drive. Combined with the unchangeable center distance of the oil drilling rig chain, it is difficult to set the tension wheel and the characteristics of the parallel center chain often with several parallel links , Pointed out that using involute function method to calculate the calculated center distance, not only convenient and time-saving, but also higher accuracy. The article provides the necessary form data and computer block diagram and its various forms of use.