| 发明名称 | Pitch system for a wind turbine rotor | ||
| 摘要 | A pitch system for a wind turbine rotor, comprising a first bearing and a second bearing, each provided with an outer race, an inner race, and at least one row of rolling elements, the first and second bearings being adapted to be arranged between a hub and a blade root portion or extender, to allow rotation of the blade with respect to the hub, wherein the first bearing is adapted to be arranged nearer to the hub than the second bearing in the axial direction, the pitch system further comprising an intermediate body arranged between the first bearing and the second bearing in the axial direction, said intermediate body comprising at least a blade-side part extending between the race of the first bearing that is associated with the blade and the race of the second bearing that is associated with the blade. | ||
| 申请公布号 | US9567973(B2) | 申请公布日期 | 2017.02.14 |
| 申请号 | US201313928222 | 申请日期 | 2013.06.26 |
| 申请人 | Alstom Renovables Espańa, S.L. | 发明人 | Pasquet Pierre |
| 分类号 | F03D7/02;F03D1/06 | 主分类号 | F03D7/02 |
| 代理机构 | Dority & Manning, P.A. | 代理人 | Dority & Manning, P.A. |
| 主权项 | 1. A pitch system for a wind turbine rotor, comprising: a first bearing and a separate, detached second bearing, each of the first and second bearings provided with at least one row of rolling elements, the first and second bearings arranged between a hub and a blade root portion to allow rotation of the blade with respect to the hub, wherein the first bearing is arranged nearer to the hub than the second bearing in an axial direction; a separate intermediate body absent of rolling elements aligned between the first bearing and the second bearing along a common line in the axial direction, the intermediate body comprising at least a blade-side part extending between a race of the first bearing that is associated with the blade and a race of the second bearing that is associated with the blade, wherein the race of the first and second bearings that is associated with the blade, and the blade-side part of the intermediate body, comprise a plurality of bores in the axial direction; and a plurality of studs, each stud extending through a bore of the race of the first bearing, a bore of the blade-side part of the intermediate body, and a bore of the race of the second beating, to attach the races and blade-side part to the blade root portion. | ||
| 地址 | Barcelona ES | ||