EPICYCLIC GEARING

摘要

An epicyclic gearing has a plurality of planet gears arranged about a transmission axis so as to form two arrays symmetrical with respect to a plane orthogonal to the transmission axis; the gearing has a body which, on one side, is adapted to be connected to a rotating member and, on the other side, is coupled to a ring; the ring has a plurality of relatively thin plate sectors and a plurality of pins, which extend in cantilever fashion and in opposite directions from the plate sectors and each support a respective planet gear; coupling between the aforesaid body and the ring defines at least one degree of freedom in rotation about a radial axis to allow a relative movement under load between the two components.

主权项

1. An epicyclic gearing comprising:
a plurality of planet gears arranged about a transmission axis and so as to form two arrays, which are symmetrical with respect to a centreline plane orthogonal to said transmission axis; a fastening body comprising coupling means to connect said epicyclic gearing to a rotating member; a ring coaxial to said fastening body along said transmission axis and comprising a plurality of plate sectors lying on said centreline plane and each supporting a respective pair of pins, which extend in cantilever fashion in opposite directions with respect to the plate sector and each support a respective planet gear; connection means which couple said fastening body to said ring; wherein: said fastening body ends with a plurality of finger portions, which are substantially parallel to said transmission axis; said connection means are defined by a plurality of joint devices, each conferring a degree of freedom in rotation about a radial axis, so as to allow a relative movement under load between said ring and said fastening body; the joint devices comprising respective hinging portions, which are part of said ring and are alternated with said plate sectors in circumferential direction about said transmission axis; said hinging portions having respective seats engaged by ends of said finger portions; said plate sectors have an axial thickness that is smaller than that of said hinging portions in direction parallel to said transmission axis.