Hoisting method for umbrella hydrogenerator thrust bearings

The invention belongs to the field of generator set equipment and relates to an installing method for a generator set, in particular to a hoisting method for umbrella hydrogenerator thrust bearings. The hoisting method is characterized by including the steps that a, two sections of thrust bearing seats are combined into a whole circle above a main shaft flange through pin positioning and bolts, and the thrust bearings are installed on the thrust bearing seats; b, a main shaft is hoisted, the upper surface of the flange of the main shaft makes contact with the lower surfaces of the thrust bearing seats, and the thrust bearing seats are fixed; c, the thrust bearing seats obtained in the step b, the thrust bearings and the main shaft are hoisted into a hydrogenerator pit together, and after the thrust bearings are hoisted into a lower rack, the thrust bearings are installed on the lower rack; d, finally fixing devices among the main shaft, the thrust bearing seats and the thrust bearings are detached, then the m