在斜井提升系统中,若提升机安全制动力矩过大,则上提重载时的制动减速度必然超过串车上冲的自然速度,从而引起提升钢丝绳松绳打结或断绳跑车事故;若安全制动力矩过小,则制动减速度也小,制动距离长,甚至闸不住提升机。因此《煤矿安全规程》399条规定:“倾角在30度以下的倾斜井巷,下放重载时的制动减速度不得小于0.75m/s~2,提升重载时的制 In the inclined shaft hoist system, if the safety brake torque of the hoist is too large, the braking deceleration at the time of overloading will inevitably exceed the natural speed of the hoisting on the train, causing the hoisting rope of the hoisting rope or the rope breaking sports car Accidents; if the safety braking torque is too small, the brake deceleration is small, long braking distance, or even stop the elevator. Therefore, “Coal Mine Safety Regulations” 399 states: "tilt angle of less than 30 degrees of roadway, the deceleration under the heavy load of not less than 0.75m / s ~ 2, to enhance the system of heavy