套筒滚手链传动是当今石油钻机的主要传动型式之一。随着石油钻机功率及速度的提高,人们对它的研究也在不断加深,但是作为链传动副,其本身就包括有链条及链轮两方面,因此适当地对链轮进行一些研究也是必要的。本文通过对石油钻机链传动副的工况及受力分析,提出套简滚子链轮轮齿的强度计算方法,从而指示出在链轮设计时如何合理选择材料及有关工艺规范。 Sleeve roller chain drive is one of the main drive types of oil rigs today. As the power and speed of oil drilling rigs increase, people’s research on it is deepening. However, as the chain transmission pair itself includes both the chain and the sprocket, so it is necessary to conduct proper research on the sprocket . Based on the analysis of working conditions and bearing forces of oil drilling rig chain, this paper puts forward the method of calculating the strength of the gear of the bush roller chain sprocket, which indicates how to choose the material and the related process specification rationally when designing the sprocket.