本文对2.5M提升机在水平出绳、单层缠绕、速比分别为i=11.5,20,30、罐笼在提升高度一半被卡住的非常情况下,计算了提升加速度、各绳股的非常拉力、各主要截面的弯矩、扭矩,从而得出卡罐情况下各截面应力值,以及相对于正常载荷下的应力增加系数。通过非常加载的计算,校核了现有设计的安全系数并讨论了按线弹性断裂力学进行分析的适用性。 In this paper, 2.5M hoist at the level of the rope, single-layer winding, speed ratio were i = 11.5,20,30 cage in the lifting height of the half was stuck under the extraordinary circumstances, to calculate the acceleration, the rope is very Tensile force, bending moments and torques of the main sections, so as to obtain the stress values ​​of each section under the condition of the canister and the stress increase coefficient with respect to the normal load. Through very loaded calculations, the safety factor of the existing design was checked and the suitability for analysis by linear elastic fracture mechanics was discussed.