Patent ID: 6520886
Filing Date: 2003-02-18
Classification: F16H,H02K,Y10T

Abstract:
A generator drive for matching rotation speed of a gas turbine to an electricity generator, the generator drive comprising: a supporting wall having openings; a first epicyclic gear stage having planet gears and a sun wheel whereby drive from the gas turbine is introduced to the planet gears by the sun wheel; a second epicyclic gear stage having further planet gears and an annular gear; a common planet gear shaft on which the planet gears of the first gear stage and the further planet gears of the second gear stage are arranged; bushes insertable into the openings in the supporting wall, the planet gear shaft being pre-mounted in one of the bushes so that the bush is insertable into and mountable onto the supporting wall opening as a single unit complete with the planet gears and the further, planet gears; and a first bearing and a second bearing smaller than the first bearing arranged in the bush to support the planet gear shaft in the supporting wall, the planet gears and the further planet gears being arranged on the planet gear shaft at respective distances relative to the first bearing so that movements which result from circumferential forces about the bearing from the planet gears and the further planet gears substantially cancel one another out and so that the second bearing supports a smaller load than the first bearing.