STRUCTURE FOR LUBRICATING PLANETARY GEAR DEVICE

摘要

A structure for lubricating a planetary gear device is provided with: a planetary gear device (2) comprising a cylindrical body (4) that rotates together with a carrier (3) for holding a planetary gear (22) and that has a lubricating oil inlet (44) formed therein; an annular body (5) that slides with the cylindrical body (4) and that comprises a lubricating oil supply path (51) communicating with the lubricating oil inlet (44); a pair of seal rings (7) mounted to either the cylindrical body (4) or the annular body (5) on both sides of the lubricating oil inlet (44) in the axial direction; a bypass path (71) that bypasses each of the pair of seal rings (7); and a pair of pressure reduction mechanisms (6) that are arranged either between the pair of seal rings (7) and the lubricating oil inlet (44) or on the outside of the pair of seal rings (7) and that restrict the flow of lubricating oil between the cylindrical body (4) and the annular body (5).