Supporting device for erecting bridge top formwork

The utility model relates to a supporting device for erecting a bridge top formwork, which comprises a hanging basket and two steel beams, the steel beams extend along the extending direction of a bridge, the two steel beams are distributed along the width direction of the bridge, one end of each steel beam is hung on the hanging basket through a front hanging rod, and the other end of each steel beam is hung on a rear hanging rod. A long-strip-shaped through hole extending in the extending direction of the steel beam is formed in the other end of the steel beam, two rear suspension lead screws distributed in the extending direction of the steel beam are arranged in the long-strip-shaped through hole in a penetrating mode, the lower ends of the rear suspension lead screws are in threaded connection with supporting blocks for supporting the steel beam, and the upper ends of the rear suspension lead screws are in threaded connection with suspension blocks. The device has the advantages that the elevation is qua