Pitch control for blade in wind powered generator has a servo drive to vary the pitch and with a separate locking system to hold the basic pitch up to a set wind speed

摘要

A pitch control for a blade in a wind powered generator has the blade shaft (6) mounted in the hub support (1) by a ring bearing (4, 5) and with a servo drive (7) to vary the pitch above a preset wind speed. The basic pitch is fixed by a separate locking system (8) which secures the pitch without play and without any stress on the servo drive.