| 摘要 |
A speed-reducing unit (1) having an epicyclic gear train, in particular for a turbine engine, comprising an inner planetary gear (2) and an outer planetary gear (3) which are coaxial, the inner planetary gear (2) being rotatable about the axis (X) thereof, the outer planetary gear (3) being stationary, at least one planetary wheel (4) rotatably mounted on a planetary wheel carrier (6) and engaging with both the inner planetary gear (2) and the outer planetary gear (3), the planetary wheel carrier (6) pivoting about the axis (X) of the inner planetary gear (2) and of the outer planetary gear (3), the planetary wheel (4) comprising an inner cylindrical surface (7) pivotably mounted about a cylindrical surface (8) of the planetary wheel carrier (6). The speed-reducing unit (1) further comprises means for supplying oil at the interface (9) between said cylindrical surfaces (7, 8). The invention is characterised in that the oil-supply means comprise a chamber (10) provided in the planetary wheel carrier (6), intended to form a oil buffer volume and comprising a so-called low zone (15) at a distance from the rotation axis (X) of the planetary wheel carrier (6), a so-called high zone (16) closer to the rotation axis (X) of the planetary wheel carrier (6), at least one main channel (19) that opens at the interface (9) and at the high zone (16), and at least one secondary channel (20a, 20b) that opens at the interface (9) and at the low zone (15). |
