Ship block hoisting method with crawler crane cooperating with gantry crane

The embodiment of the invention provides a ship block hoisting method through cooperation of a crawler crane and a gantry crane. The method comprises the steps that the hoisting position and operation space of the crawler crane are determined; a gantry crane is used as a main crane, the hoisting weight of the gantry crane is set to be more than 60% of the weight of the block, the distance between the hoisting point of the gantry crane and the center of the block and the distance between the hoisting point of the crawler crane and the center of the block are calculated, and the load bearing of each hoisting hook in the gantry crane and the crawler crane are determined; carrying out trial hoisting on the large block, and confirming whether the hoisting stress of the gantry crane and the crawler crane accords with a preset scheme or not and whether a braking system is intact or not through trial hoisting; and in the hoisting process, the gantry crane and the crawler crane are kept to ascend and descend synchrono