Generator rear bearing upper bush remounting method of nuclear power single-bearing support exciter and shaft lifting tool

• Main Authors: MA YEYI, REN FENG, DUAN YOU, ZHAO JUN, ZHOU YAN, DONG CHAO, GAO GUOFENG, RAO HAIBIN, WANG JIN, QIAO ZHIGANG, CAO DENGHONG, YI HAIWEI, LIANG WEI, GUO TAOJIE, CHEN JUNKAI
• Format: Patent
• Language: Chinese; English
• Published: 02.05.2023
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

The invention discloses a generator rear bearing upper bush remounting method of a nuclear power single-bearing support exciter and a shaft lifting tool. The shaft lifting tool comprises a front end shaft lifting mechanism and a rear end shaft lifting mechanism. The front end shaft lifting mechanism comprises a first bottom frame, a first roller assembly, a first driving piece and a first adjusting piece. The rear end shaft lifting mechanism comprises a second bottom frame, a second rolling wheel assembly, a second driving piece and a second adjusting piece. The method comprises the steps that shaft lifting tools are installed at the front end and the rear end of a rotor, a bearing upper bush is placed on a generator excitation end bearing lower bush, and bearing bush pin holes are aligned; lifting the rotor at the excitation end of the generator, and synchronously lifting the rotor by using a shaft lifting tool; the vertical direction of the generator excitation end bearing lower bush is not changed, a taper