Cantilever steel structure engineering supporting frame

The utility model discloses an overhanging steel structure engineering supporting frame which comprises a hanging beam, assembling cavities are formed in the two ends of the hanging beam, the assembling cavities in the two ends are connected with a first oblique beam and a second oblique beam through assembling bases arranged in the assembling cavities, and an arc-shaped top plate is arranged on the hanging beam. First lock columns for mutual connection of the first oblique beam and the second oblique beam are symmetrically arranged on the two sides of the arc-shaped top plate, an adjusting frame is arranged at the central axis of the hanging beam and the arc-shaped top plate in a penetrating mode, a locking device is arranged in the assembling cavity, and the radian of the arc-shaped top plate is adjusted by rotating the adjusting frame; and meanwhile, the adjusting frame achieves the supporting effect, the overall rigidity strength and supporting performance are improved through cooperation of the adjusting