SAFETY BRAKE FOR AN ELEVATOR

摘要

A safety brake for an elevator enables the movement of the elevator rope to be stopped between a back stop and a bilateral eccentric jaw in both directions of rope movement. The safety brake is self-locking. Its energy source is a spiral conveyor spring which drives a conveyor that pushes the jaws towardsthe back stop, causing the rope to be squeezed between the jaw and the back stop. The conveyor spring is provided with a shaft, and is wound up by rotating the shaft by means of a winding motor. Between the shaft and the motor there is a magneticcoupling which, when de-energized, activates the safety brake.