Abstract: A device for locking a rotor blade of a wind turbine which has an adjustment system for the blade pitch angle of the rotor blade, wherein the adjustment system has a drive which features a motor and a gearbox with an input shaft that bears an external toothing, characterized by a locking pin rotatably mounted around its longitudinal axis, which engages with the external toothing in a locking position, and releases the external toothing in an unlocked position, wherein the locking pin has an end portion whose free end stands eccentric to the longitudinal axis of the locking pin.

Abstract: A device for locking a rotor blade of a wind turbine which has an adjustment system for the blade pitch angle of the rotor blade, wherein the adjustment system has a drive which features a motor and a gearbox with an input shaft that bears an external toothing, characterised by a locking pin rotatably mounted around its longitudinal axis, which engages with the external toothing in a locking position, and releases the external toothing in an unlocked position, wherein the locking pin has an end portion whose free end stands eccentric to the longitudinal axis of the locking pin.

Abstract: A method for controlling a hydraulically actuated rotor brake for a drive train of a wind energy plant, wherein the rotor brake is realized as an active rotor brake, which exerts a braking moment getting stronger when the hydraulic pressure increases, wherein in a first phase, a brake cylinder is pressurized with a first pressure via a first pressure reducing valve, in a second phase, the brake cylinder is pressurized with a second pressure via a second pressure reducing valve, and a switchover equipment is provided, which switches over from the first pressure to the second pressure.

Abstract: A wind energy plant with a hydraulically actuated rotor brake for a drive train, which has at least one hydraulically actuated brake cylinder, the braking moment of which gets stronger when the hydraulic pressure increases, wherein a volume of hydraulic fluid is tensioned by a pressure reducing valve in the brake cylinder and in the pressure line thereof when the brake is actuated, wherein an accumulator with hydraulic fluid is provided, which is connected to the pressure line.

Abstract: A wind energy plant with a hydraulically actuated rotor brake for a drive train, which has at least one hydraulically actuated brake cylinder, the braking moment of which gets stronger when the hydraulic pressure increases, wherein a volume of hydraulic fluid is tensioned by a pressure reducing valve in the brake cylinder and in the pressure line thereof when the brake is actuated, wherein an accumulator with hydraulic fluid is provided, which is connected to the pressure line.

Abstract: A method for controlling a hydraulically actuated rotor brake for a drive train of a wind energy plant, wherein the rotor brake is realised as an active rotor brake, which exerts a braking moment getting stronger when the hydraulic pressure increases, wherein in a first phase, a brake cylinder is pressurised with a first pressure via a first pressure reducing valve, in a second phase, the brake cylinder is pressurised with a second pressure via a second pressure reducing valve, and a switchover equipment is provided, which switches over from the first pressure to the second pressure.