Two-way speed limitelr for elevator

The utility model relates to a bidirectional elevator speed limiter which is used for limiting the lifting and falling speed of an elevator so as to ensure the safe operation of the elevator. The utility model comprises a speed limiter body and a towing wire rope, wherein the towing wire rope is orderly connected with a car, a driving sheave, a guide sheave and a counterweight. A rope clamping device is arranged between the driving sheave and the guide sheave. The towing wire rope passes through the rope clamping device. A triggering brake cable is arranged between the rope clamping device and the speed limiter body. The speed limiter is connected to a pair of safety jaws connected with both sides of the car via a pulling arm. The speed limiter body is approximately the same as the conventional speed limiters, but a notch is arranged on the bottom of a rope groove of a rope pulley to deepen the groove, and a trigger mechanism of the rope clamping device is added. A fixed block is added on a left lifting draw rod, and a rope hitch plate with a triggering brake cable is fixed on a machine frame. The utility model can not only pull the safety jaws but also trigger the rope clamping device, with the advantages of small size, compact structure, stable and reliable speed, sensitive motion, and wide speed applicability range from 025 to 2.5m/s.