초록 ▼

A locking mechanism for a wind turbine decelerates and/or locks a rotor or a rotor shaft of the wind turbine. For maintenance work, the rotor or the rotor shaft is lockable to a machine support of the wind turbine in a form-fit manner by utilizing the locking mechanism. A rotational position of the

A locking mechanism for a wind turbine decelerates and/or locks a rotor or a rotor shaft of the wind turbine. For maintenance work, the rotor or the rotor shaft is lockable to a machine support of the wind turbine in a form-fit manner by utilizing the locking mechanism. A rotational position of the rotor shaft is automatically detected in a DESIRED position. Moreover, the locking mechanism is configured to be automatically engaged when the DESIRED position has been reached. The locking mechanism additionally has at least one deceleration device for affecting the drive train and/or allowing the rotational speed of the rotor and the rotor shaft to be reduced.

대표청구항 ▼

1. A locking mechanism for a wind turbine, wherein the wind turbine has a rotor shaft of a drive train rotatably mounted on a main frame of the wind turbine, wherein the rotor shaft is connectable to a rotor, the locking mechanism comprising: locking means configured to create a torque-proof connect

1. A locking mechanism for a wind turbine, wherein the wind turbine has a rotor shaft of a drive train rotatably mounted on a main frame of the wind turbine, wherein the rotor shaft is connectable to a rotor, the locking mechanism comprising: locking means configured to create a torque-proof connection between the rotor shaft and the main frame through form-locking,wherein the locking means is configured to be automatically engaged when reaching a target position;at least one braking device for supplying a braking torque to the drive train;a control unit; andfirst sensor means, wherein: the control unit is connected to the first sensor means, wherein the first sensor means is configured to detect at least a position of the rotor shaft, a rotational direction of the rotor shaft, a rotational speed of the rotor shaft and a status of the at least one braking device,and further wherein the at least one braking device is configured to be controlled by the control unit using sensor data from the first sensor means such that the rotor shaft is decelerated and brought to a complete stop in the target position. 2. The locking mechanism according to claim 1, wherein the first sensor means comprises a multitude of rotor position sensors. 3. The locking mechanism according to claim 1, further comprising: second sensor means configured to detect a position of a sliding locking pin of the locking means. 4. The locking mechanism according to claim 1, further comprising: second sensor means configured to detect a status of a friction brake device of the braking device. 5. The locking mechanism according to claim 4, wherein the drive train comprises a gear box with a fast output shaft and a brake disk, configured to act upon by the braking device. 6. The locking mechanism according to claim 5, further comprising: third sensor means configured to detect a position or a rotational speed of the fast output shaft or the brake disc. 7. The locking mechanism according to claim 1, further comprising: second sensor means configured to detect a wind speed. 8. The locking mechanism according to claim 1, further comprising: second sensor means configured to detect an angle of attack of at least one rotor blade, wherein the angle of attack is variable. 9. The locking mechanism according to claim 1, wherein the first sensor means comprises two rotor position sensors. 10. A method for decelerating a wind turbine, the wind turbine has a rotor shaft of a drive train rotatably mounted on a main frame of the wind turbine, wherein the rotor shaft is connectable to a rotor, the method comprising: providing a locking mechanism having (i) locking means configured to create a torque-proof connection between the rotor shaft and the main frame through form-locking, wherein the locking means is configured to be automatically engaged when reaching a target position, (ii) at least one braking device for supplying a braking torque to the drive train, (iii) a control unit and (iv) first sensor means, wherein the control unit is connected to the first sensor means, and the at least one braking device is configured to be controlled by the control unit using sensor data from the first sensor means;detecting, via the first sensor means, a position, a rotational direction and a rotational speed of a rotor shaft of the wind turbine;comparing the position of the rotor shaft with a target position of the rotor shaft;calculating necessary braking power based on the detected position, the rotational speed and the rotational direction of the rotor shaft;controlling the at least one braking device, to decelerate the rotor shaft or bring the rotor shaft to a complete stop at the target position; anddetecting, via the first sensor means, the status of the braking device. 11. The method according to claim 10, further comprising: detecting a wind speed, andadjusting an angle of attack of at least one rotor blade, so that a decelerating or accelerating torque acting on the drive train is created. 12. The method according to claim 10, wherein the locking means, comprising a locking pin, are brought into engagement in such a manner that the rotor shaft is torque-proof connected through form-locking to the main frame when the target position of the rotor shaft is detected by the control unit. 13. The method according to claim 10, wherein the rotor shaft or a fast output shaft is decelerated and brought to a complete stop before the rotor shaft reaches the target position. 14. The method according to claim 13, wherein the target position is reached at least partly by alternating start and stop movements of the rotor shaft or the fast output shaft.