Epicyclic transmission provided with a lubricating system
AssigneeGE Avio S.r.l.
InventorPaolo ALTAMURA
Life of this patent
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Abstract
An epyciclic transmission has a sun gear rotational about a transmission axis, a plurality of planet wheels meshing with the sun gear, and a carrier which supports the planet wheels and is rotational about the transmission axis; the transmission also has a lubricating system provided with at least one nozzle arranged in fixed position, with a collection channel fixed with respect to the carrier and configured to receive a jet of oil exiting from the nozzle, and with at least one pump having a casing fixed to the carrier; the pump is actuated by means of a transmission device in response to the rotation of the carrier to pump the oil from the collection channel to zones on the carrier which require lubrication.
Claims9
An epyciclic transmission comprising:
- a sun gear rotational about a transmission axis;
- a plurality of planet wheels meshing with said sun gear;
- a carrier which supports said planet wheels and is rotational about said transmission axis;
- a lubricating system adapted to transfer lubricant oil from a static structure to zones requiring lubrication on said carrier;
- characterized in that said lubricating system comprises:
- at least one nozzle arranged in fixed position and adapted to receive pressurized oil;
- a collection channel fixed with respect to said carrier and configured so as to receive a jet of oil exiting from said nozzle;
- at least one pump comprising:
- a) a casing fixed to said carrier;
- b) an inlet communicating with said collection channel;
- c) an outlet communicating with the zones requiring lubrication;
- d) pumping means for pumping oil from said inlet to said outlet;
- transmission means for actuating said pumping means in response to the rotation of said carrier about said transmission axis.
Dependencies are inferred from the claim text.