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公开(公告)号：US10590913B2
公开(公告)日：2020-03-17
申请号：US15556525
申请日：2016-03-08
Applicant: Liebherr-Components Biberach GmbH
Inventor： Anton Gaile , Jan Fesenmayr , Stefan Cersowsky , Thomas Schulze
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.
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公开(公告)号：US11473558B2
公开(公告)日：2022-10-18
申请号：US17032902
申请日：2020-09-25
Applicant: Liebherr-Components Biberach GmbH
Inventor： Martin Dahl , Stephan Kreiner , Marcel Winkler , Markus Schuster , Christopher Fingerhut , Thomas Schulze
Abstract: In general, the invention relates to wind turbines, the rotor blades of which can be adjusted in terms of their pitch angle. The invention relates in particular to an actuating drive for adjusting the pitch angle of a rotor blade of a wind turbine, comprising a large rolling bearing which comprises two bearing rings that can be rotated relative to each other, and an actuator for rotating the two bearing rings relative to each other. According to the invention, the actuating drive comprises a ring channel cylinder, which is formed in one of the bearing rings, and at least one piston, which is received in the ring channel cylinder in a movable manner and is drivingly connected to the other bearing ring of the two bearing rings.
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公开(公告)号：US10794361B2
公开(公告)日：2020-10-06
申请号：US15556528
申请日：2016-03-08
Applicant: Liebherr-Components Biberach GmbH
Inventor： Anton Gaile , Jan Fesenmayr , Stefan Cersowsky , Thomas Schulze
Abstract: The present invention relates to wind turbines with variable rotor blades whose pitch angles are adjustable. An adjustment unit is provided for adjusting the pitch angle of the rotor blades 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, and a supply unit for supplying the adjustment actuator with energy, whereby the adjustment actuator and the supply unit are disposed on opposite sides on a plate-shaped adjustment drive carrier part which is rotatably connected with one of the bearing rings and comprises a rotatable support bearing for the support of the adjustment actuator. A least one part of the supply unit is rotatably mounted on the carrier part such that the supply unit or its rotatably mounted part and the adjustment actuator are jointly rotatably mounted and/or swivel-mounted on the carrier part.
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公开(公告)号：US11761482B2
公开(公告)日：2023-09-19
申请号：US17091967
申请日：2020-11-06
Applicant: Liebherr-Components Biberach GmbH
Inventor： Martin Dahl , Stephan Kreiner , Markus Schuster , Thomas Schulze , Klaus Graner , Andreas Palmer
CPC classification number: F16C19/381 , F03D7/0224 , F03D80/70 , F16C41/005 , F05B2260/79 , F16C2360/31
Abstract: An adjusting drive for adjusting the rotational position of a large rolling bearing that comprises two bearing rings that can be rotated relative to each other, having an actuator for rotating the two bearing rings relative to each other. According to the invention, the actuating drive has a ring channel cylinder, which is formed in or on one of the bearing rings of the large rolling bearing, and at least one piston, which is received in the ring channel cylinder in a movable manner and is drivingly connected to the other bearing ring of the two bearing rings.
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