| 摘要 |
An epicyclic gear mechanism having two forward speeds and one reverse speed, characterized by simplicity and symmetry in design along with a radial output, compact and adaptable to applications requiring close coupling with driving or driven equipment or as an internal drive, versatile as providing alternative or secondary inputs or outputs at either end of the drive shaft in addition to output at the ring gear. The sun gear is rotated by the drive shaft or is fixed, depending on actuation and deactuation of a first clutch and first brake, and the planet carrier is rotated by the drive shaft or is fixed, depending on actuation and deactuation of a second clutch and second brake. Rotation of the ring gear varies in accordance with actuation and deactuation of the pair of clutches and the pair of brakes, providing a neutral mode along with two forward modes and one reverse mode having varying output/input speed ratios which are especially suitable for certain marine and other applications.
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