Adjustment unit for adjusting the pitch of a rotor blade, and wind turbine with such an adjustment unit

US10590913B2 · kind B2 · utility

Assignee

• Liebherr-Components Biberach GmbH · DE

Inventors

• Anton Gaile · Leutkirch, DE
• Jan Fesenmayr · Leutkirch, DE
• Stefan Cersowsky · Oberkochen, DE
• Thomas Schulze · Rudolstadt, DE

Key dates

• Filing date: Mar 8, 2016
• Grant date: Mar 17, 2020
• Expiry date: Nov 23, 2036

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/72
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to wind turbines with variable rotor blades whose pitch angle can be adjusted, wherein an adjustment unit for adjusting the pitch angle of a wind turbine rotor blade with a pivot bearing comprising at least two coaxial bearing rings that are rotatable against each other, at least one adjustment actuator for rotating the two bearing rings against each other, and a supply unit for supplying the adjustment actuator with energy, wherein the at least one adjustment actuator and the supply unit are disposed on opposite sides on a plate-shaped adjustment drive carrier part which is directly or indirectly rotatably connected with one of the bearing rings and comprises a rotatable support bearing for the rotatable support of the adjustment actuator on the carrier part. The supply unit is connected with the adjustment actuator by at least one pressurized-media channel passing through the support bearing.