| 20100194114 | LOCKING MECHANISM FOR A WIND TURBINE - The invention relates to a locking mechanism for a wind turbine in which a rotor shaft of a drive train is rotatably mounted on a machine support of the wind turbine while the rotor shaft can be connected to a rotor. In order to be able to do maintenance work on the wind turbine, the locking mechanism comprises locking means, especially with a movable locking bolt, which makes it possible to establish a rotationally fixed positive connection between the rotor or the rotor shaft and the machine support. In order to do so, a rotational position of the rotor shaft can automatically be detected in a DESIRED position, and the locking means can be automatically engaged when said DESIRED position has been reached. The disclosed mechanism additionally comprises at least one decelerating device for affecting the drive train, thus allowing the rotational speed of the rotor and the rotor shaft to be reduced. One aim of the invention is to design an improved locking mechanism which overcomes the drawbacks of the prior art, among other things. Said aim is achieved by means of the features of main claim 1, sensor means being provided for detecting a rotational speed of the rotor shaft. The mechanism according to the invention for the first time makes it possible to estimate or calculate the required braking force and/or the braking distance of the deceleration device by comparing the current position of the rotor shaft with the DESIRED position once the rotational speed is known, thus allowing the rotor shaft to be safely, gently, and accurately decelerated to a standstill in the DESIRED position. | 08-05-2010 |
| 20100176601 | BEARING ARRANGEMENT FOR A WIND TURBINE - The invention relates to a bearing arrangement, especially for a wind turbine, for transmitting radial and axial forces, two bearing partners being provided that are twistable relative to one another about an axis. The bearing partners each comprise a support area, between which a bearing block is arranged to be insertable in an actuating direction in order to generate a normal force that acts upon the support areas. The bearing block is connected in a rotationally fixed manner to one of the bearing partners. The aim of the invention is to design an improved bearing arrangement which overcomes the drawbacks of the prior art. In particular, the aim is to design a wear-resistant and maintenance-friendly bearing arrangement for an azimuth bearing of a windturbine. Furthermore, an optional aim of the invention is to make it possible to simultaneously use the bearing arrangement as an active brake. Said aim is achieved by the features of independent claim | 07-15-2010 |
