Mounting arrangement for pitch gear

摘要

A system for a wind turbine includes a pitch system having a blade pitch bearing and a wind turbine hub, the pitch bearing being attached to the wind turbine hub and arranged to be attachable to a wind turbine rotor blade. A pitch gear, having a gear surface for engaging with an actuator, such as a pinion, is releasably coupled to the pitch system so that the pitch gear, under the action of the actuator, causes relative rotation between the hub and the relevant part of the bearing. Releasably coupling the gear surface to the pitch system can allow easy replacement of the gear without requiring the removal of large components such as the bearing.

主权项

1. A system for a wind turbine, comprising:
a pitch system comprising a pitch bearing and a wind turbine hub, the pitch bearing being attached to the hub and being attachable to a wind turbine rotor blade, the pitch bearing defining an axis of rotation of the pitch bearing and an inner bearing circumference; a pitch gear releaseably coupled to the pitch system; and a flange for coupling the pitch gear to the pitch system, the flange being connected to the pitch bearing and further configured to be connected to the rotor blade such that the blade couples to the bearing through the flange, wherein the pitch gear is positioned between the axis of rotation and the inner circumference of the pitch bearing and spaced from the inner circumference in a direction substantially perpendicular to the axis of rotation of the pitch bearing, and wherein the pitch gear is further positioned between the pitch bearing and a blade tip and spaced from the pitch bearing in a direction substantially parallel to the axis of rotation of the pitch bearing.