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AssigneeMitsubishi Heavy Industries, Ltd.
InventorsMasaaki Shibata, Hisao Miyake, Tomohiro Numajiri, Yasuyoshi Tozaki, Katsuhiko Shoda
Estimating the term…
Provided is a power generating wind turbine in which parts and compoments installed in or on a nacelle are made smaller and lighter and maintenance is facilitated. A main shaft 11, a gear-box speeding up rotation of the main shaft 11 and a generator 13 driven by output of the gear-box 11 are provided on a nacelle bed plate 6. The main shaft 11 is connected to an input shaft 12a end of the gear-box 12 via a double-row tapered roller bearing 16. The main shaft 11 is supported to be fitted to a wall portion W1 of the nacelle bed plate 6 with the double-row tapered roller bearing 16 being interposed therebetween. The main shaft 11 is formed in an annular shape having its outer diameter D1 made larger than its axial directional length L1.
A power generating wind turbine comprising a nacelle installed on a tower, said nacelle comprising therein or thereon a main shaft to which a wind turbine rotating blade is fitted, a gear-box by which a rotation of said main shaft is speeded up to be put out and a generator driven by an output of said gear-box, wherein said main shaft is connected to an end of an input shaft of said gear-box and is supported to said nacelle via a single double-row tapered roller bearing.
A power generating wind turbine comprising a nacelle installed on a tower, said nacelle comprising therein or thereon a main shaft to which a wind turbine rotating blade is fitted, a gear-box by which a rotation of said main shaft is speeded up to be put out and a generator driven by an output of said gear-box, wherein said main shaft is connected to an end of an input shaft of said gear-box and is supported to said nacelle via a single three-row roller bearing comprising a row of rollers receiving a radial load and a pair of rows of rollers receiving a thrust load.
Dependencies are inferred from the claim text.