A speed governor for vertical elevator

The utility model relates to the technical field of speed limiters, and discloses a speed limiter for a vertical elevator, which comprises a speed limiter main body, and the inner wall of the top of the speed limiter main body is movably connected with a hydraulic cylinder through a connecting seat. The utility model discloses a speed limiter for a vertical elevator. A hydraulic cylinder, a curvedrod, a moving rod, a movable rod, a rotating shaft, a rope wheel, a protruding block, a key, a piston barrel, an air outlet pipe, a push rod, a piston rod, a first spring and a rolling wheel are arranged in a combined mode. When the elevator runs, the rope wheel rotates and drives the protruding block to rotate. When the convex block is in contact with the roller, the first spring is extruded; the piston rod moves to suck air and deflate through the air outlet pipe; the rope wheel rotates regularly; when the elevator overspeeds, the air suction speed of the piston rod is increased, the push rod moves towards the left