| 摘要 |
A bearing house (3) having a spherical bearing, said bearing house has a connection part (15) adapted to be fixed to a piston rod (1), said piston rod is operated by a linear actuator. The bearing house (3) has a centre line (12), that is displaced in relation to a longitudinal axis (13) of the connection part. In this way it is secured those non wanted moments are eliminated, since when a radial displacement of the bearing house in relation to the cylindrical tube takes place, then the piston rod will be rotated leading to an inclination of the bearing house. A preferred use of the invention is in connection with pitch control of wind turbine blades. |
