Bearing arrangement of a wind turbine and method for adjusting the preload of a bearing arrangement
AssigneeEolotec GmbH
InventorsMathias Pick, Wolfgang Losert
Life of this patent
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Abstract
To facilitate adjusting a bearing arrangement, particularly in a wind turbine, for different operating situations, the bearing arrangement has an adjusting device with which the bearing preload can be adjusted starting from a base preload. This can allow, for example signs of wear to be compensated, manufacturing tolerances or design inaccuracies to be corrected and in particular current loading states to be addressed. This design avoids the otherwise usual overdimensioning of the bearing arrangement, thereby increasing the efficiency of the wind turbine as well as the service life of the bearing arrangement.
Claims19
A wind turbine bearing arrangement that is a main bearing for a rotor hub of a wind turbine, the arrangement comprising:
- a stator unit;
- a rotor unit, the stator unit and rotor unit are mounted on one another via a rotor-side bearing and a tower-side bearing, the rotor side bearing and the tower-side bearing being arranged spaced apart from one another by a distance of at least 0.35 times a maximal bearing diameter that ranges from 2 m to 3.5 m and each having an inner bearing ring and an outer bearing ring, wherein the tower-side bearing is clamped between fixed bearing seats on the stator unit and the rotor unit and wherein the rotor-side bearing is clamped between a clamping ring and only one fixed bearing seat on either the stator unit or the rotor unit, such that a preload-circuit is formed by the rotor-side and tower-side bearings and by the stator unit, wherein a base preload is set during assembly via the preload-circuit, wherein the inner bearing ring or the outer bearing ring is a bearing clamping ring and wherein the rotor-side bearing is smaller than the tower-side bearing;
- and
- a mechanical adjusting device having the clamping ring via which a preload on the bearing clamping ring is changeable relative to the base preload such that a preload of the rotor-side bearing and tower-side bearings are adjustable via the preload-circuit, wherein the mechanical adjusting device is arranged such that the preload is variable relative to the base preload following initial assembly in a static or dynamic manner.
A wind turbine bearing arrangement that is a main bearing for a rotor of a wind turbine, the arrangement comprising:
- a stator unit;
- a rotor unit, the stator unit and rotor unit are mounted on one another via a rotor-side bearing and a tower-side bearing, the rotor side bearing and the tower, side bearing being arranged spaced apart from one another and each having an inner bearing ring and an outer bearing ring, wherein a preload-circuit is formed by the rotor-side and tower-side bearings and by the stator unit, wherein a base preload is set during assembly via the preload-circuit, and wherein the inner bearing ring or the outer hearing ring is a bearing clamping ring;
- and
- an adjusting device having a clamping ring via which a preload on, the bearing clamping ring is changeable relative to the base preload such that a preload of the rotor-side bearing and tower-side bearings are adjustable via the preload-circuit,
- wherein the adjusting device controls a temperature of the rotor unit and/or the stator unit, and
- wherein multiple temperature zones are realized in an axial direction.
A wind turbine bearing arrangement that is a main bearing for a rotor of the wind turbine, the arrangement comprising:
- at least one bearing for bearing a rotor unit on a stator unit, the at least one bearing having two bearing rings, which include an inner ring and an outer ring, the two bearing rings being clamped against one another with a base preload,
- wherein the preload of the at least one bearing is varied relative to the base preload by an adjusting device, the adjusting device having a clamping ring comprising two ring parts, the two ring parts being a retaining ring part and a clamping ring part, the retaining ring part being clamped against the stator unit or the rotor unit by a fastening element, and
- wherein one of the bearing rings is a bearing clamping ring and the clamping ring part overlapping the bearing clamping ring for transferring the preload, and
- wherein threaded holes for clamping or ejector bolts are provided in the clamping ring part.
Dependencies are inferred from the claim text.