Pre-pressing device for zero block bracket of suspended casting variable cross-section continuous beam

The utility model relates to the technical field of bridge construction, and particularly discloses a suspension casting variable cross-section continuous beam zero block bracket pre-pressing device. Comprising a jack and a bracket arranged on the side face of a pier body, a distribution cross beam is arranged on the bracket, a distribution longitudinal beam is arranged at the position, corresponding to each back pressure point, of the distribution cross beam, and a supporting cushion block is arranged on each distribution longitudinal beam; a prepressing supporting frame is arranged on the lower side of the bracket and comprises an oblique beam, a cross beam and a vertical plate, and the oblique beam, the cross beam and the vertical plate form a stable triangular structure. A plurality of mounting holes are formed in the vertical plate, a fixing device with the same arrangement position as the mounting holes is arranged on the side face of the pier body, and the fixing device is composed of a fixing base and