Patent ID: 9103413
Filing Date: 2015-08-11
Classification: F02C,F05D,F16H,Y02T

Abstract:
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.