The utility model discloses a bridge girder erection
machine front supporting leg cable-stayed supporting structure which comprises a bridge girder erection
machine body, a door-shaped frame is arranged in the bridge girder erection
machine body, a stand column is fixedly connected below the door-shaped frame, supporting feet are fixedly connected to the bottom of the stand column, an adjusting
assembly is arranged between the supporting feet, and rail assemblies are arranged at the connecting positions of the supporting feet and the stand column. The rail
assembly comprises a first rail and a second rail, one end of the first rail is rotationally connected with one end of the second rail, the first rail has a first state and a second state, when the first rail is in the first state, the second rail and the first rail are located on the same straight line, and a crane is used for cooperation, a cage
operation mode is adopted, and a connecting pin shaft is disassembled and assembled; after rectification, the
operation time is effectively shortened to five or six hours, the
operation time is saved by more than half compared with the
operation time before transformation, the beam erecting cost is greatly reduced, the operation is simple, convenient and rapid, and the disassembly and
assembly are flexible.