Anti-falling device for vertical lifting door

The utility model provides an anti-falling device for a vertical lifting door, which is symmetrically arranged on two sides of the bottom of a vertically opened and closed door body, and blocking rods are arranged on the left side and the right side of the door body; the anti-falling device comprises a shell, a clamping jaw and an elastic reset device, the shell is fixedly connected with the door body, the clamping jaw is eccentrically and rotationally installed on the shell through a pin shaft, the elastic reset device is connected between the clamping jaw and the shell, the side, close to the door body, of the clamping jaw is connected with an external force traction piece, and the top end of the external force traction piece is connected with a lifting device. The straightened external force traction piece pulls the clamping jaw upwards to enable the clamping jaw to be staggered with the stopping rod, and after the external force traction piece is broken, the elastic reset device drives the clamping jaw to