Anti-falling portal frame

The utility model provides an anti-falling portal frame, and relates to the technical field of portal frames, the anti-falling portal frame comprises a U-shaped main body frame, two stabilizing mechanisms are arranged below the U-shaped main body frame, each stabilizing mechanism comprises a base, a worm, two threaded rods and an antiskid plate, the outer surfaces of the two threaded rods are in threaded connection with threaded pipes, and the threaded pipes are in threaded connection with the worm. The two threaded pipes are both fixedly connected to the upper surface of an anti-skid plate, the top ends of the two threaded rods are both fixedly connected with worm wheels, and the two worm wheels are both engaged with a worm. According to the anti-falling portal frame, by arranging the U-shaped main body frame and the stabilizing mechanism, the stability of the U-shaped main body frame during cargo carrying in the moving process can be guaranteed, the situation that the bottom of an existing U-shaped main bod