Method for assembling large pinwheel and supporting rod of gantry crane

The invention discloses a method for assembling a large pinwheel and a supporting rod of a gantry crane, and aims to solve the problems of insufficient assembling precision of the large pinwheel and the supporting rod, high danger coefficient in the assembling process and low assembling efficiency in the prior art. Compared with the prior art, according to the assembling method, the supporting rod and the large pinwheel are assembled into a whole on the ground, then the supporting rod and the large pinwheel are integrally hoisted to the gate seat, the assembling precision of the supporting rod and the large pinwheel is conveniently controlled, and the frame erecting difficulty is also reduced; in the assembling process, the supporting rods are pre-assembled in pairs in pairs to form supporting rod sets with stable structures, and the stability of the supporting rods in the erecting process is improved; the lower end of the supporting rod set is temporarily positioned through the temporary positioning mechanis