Rotor blade pitch adjusting device and turbomachine containing the same

摘要

An adjusting device is provided for pivoting blades of a rotor via a transmission that is actuatable by a co-rotating, axially-displaceable actuating shaft. The adjusting device includes a roller bearing having a first side or ring that is attachable to the actuating shaft and a second side or ring connected with an actuating body that is non-rotatably supported in a support body. The adjusting device further includes a screw drive that axially displaces the actuating body within the support body to thereby linearly actuate the transmission.

主权项

1. An adjusting device for blades each located on a pivot axle connected to a rotor shaft such that the blades can rotate about a rotational axis, an actuating shaft extending through the rotor shaft, comprising:
the actuating shaft configured for axial movement along the rotational axis; a transmission disposed on the actuating shaft and configured to adjust a pitch of the blades while maintaining the pivot axle of each of the blades oriented perpendicular to the rotational axis, the transmission being configured to adjust the pitch of the blades when the transmission is axially moved along the rotational axis by the actuating shaft; a first roller bearing having a first side engaged with the actuating shaft and a second side; an actuating body engaged with the second side of the first roller; a support body supporting the actuating body in a non-rotatable manner; and a screw drive configured to axially displace the actuating body along the rotational axis relative to the support body.