Lifting brake mechanism for anti-running device

The utility model discloses a lifting brake mechanism for an anti-running device. The lifting brake mechanism comprises a supporting arm, and lifting supports; the upper part of the outer end of the supporting arm is provided with a brake rail installation structure; the end part of the supporting arm is provided with a sliding hole; two lifting supports are symmetrically distributed on two sides of the sliding hole; and two lifting supports support a roller which passes through a lifting sliding hole at the outer end of the supporting arm. In the lifting mechanism, the lifting sliding hole is formed at the outer end of the supporting arm, so that the lifting of the end part of the supporting arm is realized; the extending end part of the supporting arm is lifted when a stopping device is at the working position, a brake rail is driven to be lifted simultaneously, the contraction end of the supporting arm falls down when the stopping device is at the release position, and the brake rail is driven to fall down