Aktiebolaget Skf

Håkan Leander

Hans Wendeberg

Jürgen Reichert

A wind turbine rotor shaft arrangement, e.g. of horizontal type, comprising a rotor shaft for supporting wind turbine blades, a non-rotating first housing structure for supporting the rotor shaft, and a first rolling bearing arranged to support, in a first axial direction, the rotor shaft in relation to the first housing structure at a first support point. The first rolling bearing is a single row self-aligning bearing comprising an inner ring, an outer ring, and a set of rolling elements formed of rollers arranged in an intermediate configuration between the inner and outer rings. Each roller is a symmetrical bearing roller having a curved raceway-contacting surface arranged contacting a curved inner raceway of the inner ring and a curved outer raceway of the outer ring. A contact angle between each roller and the inner and/or outer raceway is inclined in relation to the radial direction of the rotor shaft.

Wind turbine rotor shaft arrangement

The present invention refers to a mounting sleeve () for mounting a ring having a tapering inner bore on a cylindrical shaft, wherein the mounting sleeve has a cylindrical inner envelope surface, wherein the inner surface of the mounting sleeve has an increased friction coefficient, for giving an increased ability to the mounting sleeve to transfer axial load, without sliding along the surface of the shaft.

Mounting sleeve for mounting a ring member on a shaft and a bearing assembly incorporating such a mounting sleeve

A bearing () includes an outer ring (), rolling elements () and a two-part inner ring (A). The two-part inner ring (A) includes a first part () having a radially outer surface () and an inner bore (). Furthermore, the two-part inner ring (A) includes a second part () having a radially inner surface () and at least one raceway () for rolling elements. The radially outer surface () of the first part () essentially matches the radially inner surface () of the second part (). A cavity (), which in use acts as a pressure chamber, is located between the first and second parts (). When pressurizing the cavity (), a relative axial movement between the first and second parts () is accomplished.

Growing community of inventors

Torslanda, Sweden

Håkan Leander