The speed limiter is divided into centrifugal type and resonance type according to the structural form, and the centrifugal type is further divided into centrifugal plate type and centrifugal block type.
This speed limiter is also a centrifugal block type speed limiter.
When the car is running, the speed limiter wheel is driven to rotate by the wire rope of the speed limiter. Once the downward speed of the car exceeds 115% of the rated speed, the electrical switch on the speed limiter will act first to cut off the elevator safety circuit. Continue to run under the action of inertia, produce mechanical action, clamp the wire rope of the speed limiter, pull the safety gear to clamp the guide rail, and make the car stop on the guide rail.