Dynamic brake characteristics of disc brake during emergency braking of the kilometer deep coal mine hoist were investigated in the present study. The theoretical model of dynamic brake torque of disc brake during emergency braking was given to explore dynamic brake torque properties of disc brake. The three-dimensional thermo-mechanical coupled finite element model of brake disc–brake shoe was established to explore thermo-mechanical characteristics of disc brake during emergency braking. Effects of effective mass, hoisting acceleration and deceleration, and maximum hoisting speed on dynamic brake torques, equivalent von Mises stress, and temperature fields of disc brake during emergency braking were presented. The results show that the evolutions of brake torque, equivalent stress, and temperature of disc brake present fluctuating characteristics. The dynamic brake torque shows the largest change amplitude during emergency braking in the hoisting stage of constant speed. The largest equivalent stress and temperature are both located near the third brake shoe along the rotational direction at each side. An increase in effective mass causes overall decreases in the peak values of brake torque, equivalent stress, and temperature during emergency braking. Increases in hoisting acceleration/deceleration and maximum hoisting speed cause the increases in the maximum equivalent stress and temperature during emergency braking as compared to the slight decrease in the maximum brake torque.

研究了公里深煤矿葫芦紧急制动过程中盘式制动器的动态制动特性。建立了碟刹动态制动扭矩理论模型，探讨了碟刹动态制动扭矩特性。建立了制动盘-闸瓦的三维热力耦合有限元模型，以探讨紧急制动过程中盘式制动器的热机械特性。提出了有效质量，起重加减速和最大起重速度对动态制动扭矩，等效冯·米塞斯应力以及紧急制动过程中盘式制动器温度场的影响。结果表明，制动扭矩，等效应力，盘式制动器的温度和温度呈现波动特性。在恒速提升阶段的紧急制动过程中，动态制动扭矩显示出最大的变化幅度。最大的等效应力和温度都沿着旋转方向在每一侧都位于第三制动蹄附近。有效质量的增加导致紧急制动过程中制动扭矩，等效应力和温度的峰值总体下降。与最大制动转矩的略微下降相比，提升加速度/减速度和最大提升速度的增加导致紧急制动期间最大等效应力和温度的增加。最大的等效应力和温度都沿着旋转方向在每一侧都位于第三制动蹄附近。有效质量的增加导致紧急制动过程中制动扭矩，等效应力和温度的峰值总体下降。与最大制动转矩的略微下降相比，提升加速度/减速度和最大提升速度的增加导致紧急制动期间最大等效应力和温度的增加。最大的等效应力和温度都沿着旋转方向在每一侧都位于第三制动蹄附近。有效质量的增加会导致紧急制动过程中制动扭矩，等效应力和温度的峰值总体下降。与最大制动转矩的略微下降相比，提升加速度/减速度和最大提升速度的增加导致紧急制动期间最大等效应力和温度的增加。