Hoisting device and hoisting method for main beam of cable-stayed bridge

The invention relates to the technical field of cable-stayed bridge construction, in particular to a cable-stayed bridge main beam hoisting device and method.The cable-stayed bridge main beam hoisting device comprises a hoisting frame, a sliding device and a tower crane, the hoisting frame is arranged on an upper cross beam of a diamond-shaped bridge tower and used for hoisting a pier top section main beam, and the sliding device is arranged on the upper cross beam of the diamond-shaped bridge tower; the sliding device is arranged on a lower cross beam of the bridge tower and used for moving the pier top section main beam in the width direction of the bridge tower, and the tower crane is arranged on one side in the width direction of the bridge tower and used for hanging the suspended splicing section main beam. By using the device, the problems of construction period delay, labor loss, tedious working procedures and high construction material occupancy rate caused by the fact that the construction of pausing