초록 ▼

A power generating wind turbine includes parts and components installed in or on a nacelle which are made smaller and lighter, thus facilitating maintenance. A main shaft 11, a gear-box for speeding up rotation of the main shaft 11 and a generator 13 driven by an output of the gear-box 11 are provid

A power generating wind turbine includes parts and components installed in or on a nacelle which are made smaller and lighter, thus facilitating maintenance. A main shaft 11, a gear-box for speeding up rotation of the main shaft 11 and a generator 13 driven by an 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 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 larger than its axial directional length L1.

대표청구항 ▼

The invention claimed is: 1. A power generating wind turbine comprising: a nacelle supported by a tower; a main shaft connected to a wind turbine rotating blade at a front side of a wall portion of said nacelle; a generator housed within said nacelle; and a gear-box for increasing a rotational spee

The invention claimed is: 1. A power generating wind turbine comprising: a nacelle supported by a tower; a main shaft connected to a wind turbine rotating blade at a front side of a wall portion of said nacelle; a generator housed within said nacelle; and a gear-box for increasing a rotational speed of an output shaft of said gearbox to drive said generator, said gear-box being housed within said nacelle, wherein said main shaft is connected to an input shaft of said gear-box, and said main shaft is supported by said wall portion of said nacelle via a single double-row tapered roller bearing provided coaxially with said main shaft, said single double-row tapered roller bearing being positioned at the front side of said wall portion and at an axial end portion of said main shaft. 2. A power generating wind turbine according to claim 1, wherein said main shaft has an annular or disk shape and an outer diameter of said main shaft is larger than an axial directional length of said main shaft. 3. A power generating wind turbine according to claim 2, wherein said main shaft and said input shaft of said gear-box are connected to each other via a coupling. 4. A power generating wind turbine according to claim 1, wherein said main shaft and said input shaft of said gear-box are connected to each other via a coupling. 5. A power generating wind turbine comprising: a nacelle supported by a tower; a main shaft connected to a wind turbine rotating blade at a front side of a wall portion of said nacelle; a generator housed within said nacelle; and a gear-box for increasing a rotational speed of an output shaft of said gearbox to drive said generator, said gear-box being housed within said nacelle, wherein said main shaft is connected to an input shaft of said gear-box, and said main shaft is supported by said wall portion of said nacelle via a single three-row roller bearing provided coaxially with said main shaft, said single three-row roller bearing having a first row of rollers for receiving a radial load and second and third rows of rollers for receiving a thrust load, said single three-row roller bearing being positioned at the front side of said wall portion and at an axial end portion of said main shaft. 6. A power generating wind turbine according to claim 5, wherein said main shaft has an annular or disk shape and an outer diameter of said main shaft is larger than an axial directional length of said main shaft. 7. A power generating wind turbine according to claim 6, wherein said main shaft and said input shaft of said gear-box are connected to each other via a coupling. 8. A power generating wind turbine according to claim 5, wherein said main shaft and said input shaft of said gear-box are connected to each other via a coupling.