钻机刹车机构是绞车的重要组成部分。目前,一般采用试凑法进行设计,工作量大,而且效果并不理想。本文采用优化设计方法,对刹车机构进行优化,既减轻了设计人员的劳动和缩短了设计周期,又能得到与实际相符的增力比曲线。本文推导了刹车机构增力比的函数式f(x,θ),建立了目标函数及约束条件,并有计算实例。 Drilling machine brake mechanism is an important part of the winch. At present, the trial and error method is generally used for design, and the workload is heavy, and the effect is not satisfactory. In this paper, the optimal design method is used to optimize the brake mechanism, which not only reduces the designer’s labor and shortens the design cycle, but also obtains the augmenting curve that matches the actual situation. In this paper, the function f (x, θ) of braking force increasing ratio is deduced, and the objective function and constraint conditions are established. Some calculation examples are given.