Mechanical interlocking safety device for elevator

The utility model discloses a mechanical interlocking safety device for an elevator. Main hanging wheel, the main hanging wheel is arranged in the center of the upper part of the hanging cage; a hoisting steel wire rope connected with a traction machine is arranged above the suspension cage; the hoisting steel wire rope is connected with a main hanging wheel; an auxiliary hanging wheel is arrangedabove the main hanging wheel; the auxiliary hanging wheel is rotationally connected to the upper end of an overturning rod, the overturning rod extends towards the lower right portion, the lower portion of the overturning rod is rotationally connected to angle iron at the top of the suspension cage, the upper portion of the overturning rod is connected with a first spring, and the other end of the first spring extends towards the lower right portion and is fixed to the edge of the upper end of the suspension cage. According to the utility model, the defects in the prior art are overcome, thestructure is reasonable, t