Pre-pressing device for cantilever construction bridge support and hanging basket

The utility model discloses a cantilever construction bridge support and hanging basket prepressing device which comprises a support, the inner end of the support is assembled on rails in a sliding mode through a sliding seat, a bottom support plate is hoisted at the front end of the support, a bottom die and an outer die are supported above the bottom support plate, a movable carrier is arranged between the rails, and the movable carrier is connected with the bottom die and the outer die. A balancing weight is placed in a groove in the rear portion of the upper surface of the movable carrier, a mounting plate is fixedly welded to the front end of the movable carrier, a hydraulic cylinder is embedded in the mounting plate, and a pressing disc is fixed to the tail end of a telescopic piston rod below the hydraulic cylinder. Mounting bases are arranged on the two sides of the lower surface of the pressing disc, and rotating shafts penetrate through the mounting bases. The support is matched with a pre-pressing