F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
F16H 57/02 (2006.01) F03D 11/00 (2006.01) F03D 11/02 (2006.01) F16H 1/48 (2006.01) F16H 57/08 (2006.01)
Patent
CA 2722888
The present invention provides a planetary gear unit (20). The planetary gear unit (20) comprises a planet carrier (11) comprising a backplate (13) and being provided with planet shafts (14) distributed uniformly around the planet carrier's axis and extending through bores (28) in the backplate (13), each planet shaft (14) rotatably supporting a pair of planet gears (17, 18) by means of planet bearings (15, 16), the planet gears (17, 18) being mounted between a ring gear (19) and a sun gear (21) for mutual interaction. The planetary gear unit (20) furthermore comprises a key (26) provided in a keyway (27) of the planet shaft (14) and extending to the backplate (13) for preventing the at least one planet shaft (14) from rotating around its own axis. According to the invention, the key (26) and keyway (27) are provided at a location positioned between 45° and 270° in a clockwise direction around the circumference of the planet shaft (14), with 0° being defined as a point at the planet shaft circumference corresponding with the largest distance from the centre (BC) of the bogie plate (13) seen from the rotor side onwards. An advantage of a planetary gear unit (20) according to embodiments of the invention is that rotation of the planet shafts (14) relative to his bore in the planet carrier (11) is prevented.
Hansen Transmissions International Naamloze Vennootschap
Riches Mckenzie & Herbert Llp
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