Elevator

摘要

The invention relates to a braking unit suitable for the elevator. The guide rail is arranged between the first gear and the trolley wheel, the first gear engages with the gear surface of the guide rail, the trolley wheel rolls on the smooth surface of the guide rail, the connecting rod make the second gear revolve around the axis of the first gear and engage with the first gear, each side of the up and down sides of the first gear is provided with a second gear, the connecting rod is provided with a triggering bore pluggably matting with the triggering end, when the triggering end withdraw from the triggering bore, the elastic force makes the second gear engage with the guide rail, at this moment, the mechanism has zero freedom degree, the elevator can not move upward or downward so as to achieve that the elevator brakes when the elevator is in fault state.