Patent ID: 7828682

Claim:
A gearbox for a wind turbine, comprising: a ring wheel unit in a housing; a driving shaft designed to be coupled to a rotor of the wind turbine and a single main or a pair of main bearings which supports the driving shaft such that it can rotate in the housing, wherein the ring wheel unit is formed of a sun wheel, a planet wheel, a ring wheel which is fixed to the housing in a non-rotating manner, and a planet carrier which is rigidly connected to the driving shaft, wherein an additional bearing is provided to support the planet carrier or the driving shaft in a rotating manner in relation to the housing, and wherein an elastic part connects a first part of the housing in which the main bearing or the main bearings are provided and a second part of the housing in which the additional bearing and the ring wheel are provided, the elastic part having a relative torsional stiffness and being relatively flexible to loads in the axial direction and/or to loads in a radial direction compared to surrounding parts of the housing.