升降机是钻机的主要部件之一.正确地分析升降机各零件的受力状态,使理论分析与实际受力状况相符合,是合理设计升降机的一个重要条件.目前,国内对这个问题的研究尚少,在有关教科书中虽有论述,但多缺乏深入的分析,甚至有些结论是错误的.本文着重讨论升降机制动的若干问题. The elevator is one of the main components of the drilling rig. The correct analysis of the force state of the parts of the elevator makes the theoretical analysis consistent with the actual stress conditions. It is an important condition for the rational design of elevators. At present, there is little research on this issue in China. Although there are discussions in related textbooks, there is a lack of in-depth analysis and even some conclusions are wrong. This article focuses on some issues of elevator braking.