Universal ring-shaped rail crane for construction of furnace liner of submerged arc furnace

The utility model relates to a universal ring-shaped rail crane for the construction of a furnace liner of a submerged arc furnace. The universal ring-shaped rail crane comprises a cross beam and an I beam, wherein a rotating device is arranged in the just middle of the cross beam; one end of the I beam is arranged at the lower end of the rotating device, and the other end of the I beam is provided with a travelling device; the travelling device is arranged on a ring-shaped rail of a furnace shell in a sliding way; the I beam is also provided with an electric block. According to the universal ring-shaped rail crane for the construction of the furnace liner of the submerged arc furnace, the ring-shaped rail on the furnace shell is adopted, and the electric block of the crane is capable of freely lifting within the 360-degree area in the furnace, so that the working efficiency is improved by 60%, and the labor intensity of workers can be greatly lightened.