Super-lifting and additional counterweight lifting method for large crawler crane in coke oven modification project

The invention relates to a superlift and additional counterweight lifting method for a large crawler crane in a coke oven modification project. The superlift and additional counterweight lifting method is characterized by comprising the following steps of: a, superlift a 1000-ton crawler belt of an end platform; b, the hoisting radius of the intermediate platform 1250-ton crawler crane is kept to be 16 meters unchanged; c, the main truss bypasses the crawler crane to the front of the coke oven; d, double-crane hoisting: the two crawler cranes hook for 10 meters again to hoist the steel truss to bypass the crawler crane to the front of the coke oven to drop the hook, so that the bottom of the main steel truss is 0.5 m away from the ground; and e, double-crane load state: a certain amount of superlift counterweight is added to the end platform 1000-ton crawler crane, and the hoisting radius of the intermediate platform 1250-ton crawler crane is kept to be 16 meters. And f, hoisting and rotating the double crane