Pitch apparatus and wind turbine having pitch apparatus
US11306698B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 25, 2017 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Jun 28, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/72
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Provided is a pitch apparatus of a wind turbine. The wind turbine includes a wheel hub and multiple blades. The pitch apparatus includes a pitch bearing, a transmission element and a driving mechanism for driving the transmission element. The pitch bearing includes a bearing inner race and a bearing outer race. The bearing inner race is fixedly connected to the blade; the bearing outer race is fixedly connected to the wheel hub. The transmission element is driven by the driving mechanism, and drives the blade and the bearing inner race to rotate relative to the wheel hub. A load level of ultimate bending moment for a blade root and a safety factor of the pitch apparatus increase, failure risks of the pitch bearing, bolts and the transmission belt are reduced. A wind turbine having pitch apparatus is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.