| 摘要 |
Rotation device of a wind turbine blade (1), which comprises a hydraulic actuator (3) to rotate said blade (1) in relation to a longitudinal axis of rotation, and a hydraulic system (4) to drive the actuator (3), wherein said actuator (3) comprises a substantially toroidal hydraulic chamber (5) concentric with the axis of rotation of the blade (1), said hydraulic chamber (5) comprising at least one moving piston (6) linked to the blade (1), and at least one respective fixed stopper (7). |
