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Planetary gear unit for a gearbox for a wind turbine

A technology for planetary gear units and wind turbines, which is applied to wind power engines, wind power generator components, engine components, etc., and can solve the problems of expensive and increased cost of planetary gear units

Inactive Publication Date: 2011-04-27
HANSEN TRANSMISSIONS INT NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such large plain bearings are very expensive and thus also increase the cost of manufacturing the planetary gear unit

Method used

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  • Planetary gear unit for a gearbox for a wind turbine
  • Planetary gear unit for a gearbox for a wind turbine
  • Planetary gear unit for a gearbox for a wind turbine

Examples

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Embodiment Construction

[0036] The invention will be described with respect to particular embodiments and with reference to certain non-limiting drawings. It must be understood that the invention is not limited thereto but only by the claims. The size of some of the elements in the figures may be exaggerated and not drawn on scale for illustrative purposes.

[0037] Terms such as "comprising" and "coupled" should not be construed as limiting the invention in any way. The term "comprising", used in the claims, should not be interpreted as being restricted to the means listed thereafter; it does not exclude other elements or steps. Also, it should be noted that the term "coupled" used in the claims should not be construed as being limited to direct connections only.

[0038] Although some embodiments described herein include some features that differ from others included in other embodiments, as will be understood by those skilled in the art, combinations of features from different embodiments are wi...

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PUM

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Abstract

The present invention provides a planetary gear unit (20) for a gearbox (40) for a wind turbine. The planetary gear unit (20) comprises a housing (21) and a planet carrier (22) provided with planet shafts (23) distributed uniformly around a planet carrier's axis for rotatably supporting planet gears (24) which are mounted between a sun gear (26) and a ring gear (27) for mutual interaction and which are supported by rolling bearings (25). The planet carrier (22) is rotatably mounted in the housing (21) by means of sliding bearings (28). By using sliding bearings (28) which are different from existing classical sliding bearings which are currently used for rotatably mounting the planet carrier (22) in the housing (21) in combination with the use of rolling bearings (25) for supporting other parts of the planetary gear unit (20), costs of the planetary gear unit (20) may significantly be reduced. The present invention also provides a gearbox (40) comprising such a planetary gear unit (20) and a wind turbine comprising such a gearbox (40).

Description

technical field [0001] The invention relates to a planetary gear unit for a wind turbine gearbox. The invention also relates to a gearbox comprising such a planetary gear unit and a wind turbine comprising such a gearbox. Background technique [0002] As the wind energy industry becomes more and more important, today the gearbox concept is thoroughly researched. A known concept of a gearbox for a wind turbine may comprise at least one planetary gear unit and a parallel gear unit for connecting the planetary gear unit with a generator of the wind turbine. [0003] Figures 1 and 2 schematically show a type of gearbox 1 for a wind turbine according to the prior art. In this example, the gearbox 1 includes a planetary gear unit 2 and a two-stage parallel gear unit 3 . The planetary gear unit 2 includes a planet carrier 4 supporting a plurality of planetary gears 5 . The planetary gear unit 2 also includes a ring gear 6 and a sun gear 7 . In the example given in FIGS. 1 and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D11/00F16H1/28F16H57/08F16C17/00F16C33/12
CPCF05B2260/40311F16H57/082F16H2057/085Y02E10/72F03D11/02F16H37/041Y02E10/722F03D15/00F16C17/02F16C2361/61F03D80/70F03D15/10
Inventor 德克-奥拉夫·莱曼
Owner HANSEN TRANSMISSIONS INT NV