Longitudinal moving hydraulic device for bridge

The utility model relates to a longitudinal moving hydraulic device for a bridge, and is applied to bridge construction. The longitudinal moving hydraulic device comprises a vertical hydraulic cylinder, and is characterized in that a square pallet is arranged on the piston rod of the vertical hydraulic cylinder; a longitudinal hydraulic cylinder is arranged on one side surface of the vertical hydraulic cylinder; a lifting device is connected onto the piston rod of the longitudinal hydraulic cylinder; the height of the lifting device ranges from the minimum height to the maximal height of the vertical hydraulic cylinder 1 and the lifting pallet 7; a rectangular base is arranged below the vertical hydraulic cylinder and the longitudinal hydraulic cylinder. The longitudinal moving hydraulic device has the advantages that the structure is simple; rail paving is eliminated; the operation is convenient; continuous moving, repeated moving as well as moving exceeding the maximal stroke of the longitudinal hydraulic c