A METHOD AND A DEVICE FOR ADJUSTING THE PITCH AND STOPPING THE ROTATION OF THE BLADES OF A WIND TURBINE

摘要

The present invention relates to a method and a mechanism for adjusting/controlling the pitch of at least one blade (4) of a wind turbine relative to a wind direction parallel (11) to a longitudinal main shaft (1) of the wind turbine, the mechanism comprising a motor for rotating drive wheels (20, 21) in the angle gear around a longitudinal blade shaft (12) via drive wheels of an angle gear. The invention also relates to a method and a mechanism for stopping the complete turning of a main shaft of a wind turbine comprising a motor to rotate a drive pinion in an angle gear via a drive wheel, the angle gear being meant to pitch at least one blade around a longitudinal axis.