Gear transmission unit with planetary gears

Details Gear transmission unit with planetary gears Gear transmission unit with planetary gears

2004-11-19

2010-10-05

Ho, Ha D. (Department: 3655)

Planetary gear transmission systems or components

Planetary gearing or element

Particular gear tooth feature

C475S346000, C475S348000

Reexamination Certificate

active

07806799

ABSTRACT:
A planetary type gear transmission unit (11) suitable for a wind turbine (10) includes sun (27), planet (25) and ring (24) gears and a planet carrier (41), the planet carrier (28) including a planet bogie plate (43) which supports and locates circumferentially spaced pairs of planet gears (25) a planetary type gear transmission unit (11) includes sun (27), planet (25) and ring gears (24) and a planet carrier(28), the planet carrier (28) including a planet bogie plate (43) which supports and locates circumferentially spaced pairs of planet gears (25), the sun (27) and ring gears (24) being each of the double helical type and each of the planet gears (47) of a pair being of the single helical type and of a helix angle opposite to that of the other planet gear (48) of the pair.

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Machine Design Theory and Practice—Deutschman et al—Macmillan Publishing Co., Inc.—pp. 463-468.
Thornblad P: “Gears for Wind Power Plants” International Symposium on Wind Energy Systems, XX, XX, 1978, pp. C689-C6106, XP002133564.

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