Gear box, seal, and cover arrangements

摘要

A gearbox for a wind turbine has a bearing arrangement positioned on the downwind side of a first stage planet carrier at a single locus. The planet carrier has a portion extending radially inwards and axially downwind from the planet gears. Thus, the weight of the gearbox is supported between the two theoretical support points of the pair of back to back tapered roller bearings at the downwind side of the first stage planet carrier. A member of unitary construction comprising gearbox flange, input shaft and first stage planet carrier, which can be cast as one piece, reduces the weight of this part compared to previous designs having separate components.

主权项

1. A gear box for a wind turbine generator, comprising:
a flange; an input shaft; and a planetary gear set comprising at least one planet gear supported by a planet carrier, wherein said input shaft, said flange and said planet carrier are a one-piece integrated unit and form a member having an input shaft region between a flange region and a planet carrier region, and wherein said planet carrier region extends radially inwards and axially downwind from said planet gears.