Patent ID: 6561940
Filing Date: 2003-05-13
Classification: F16H,Y10T

Abstract:
A constant-speed driving apparatus for driving an aircraft power generator installed on an aircraft by an engine of the aircraft at a constant-speed, the apparatus comprising:a power splitting mechanism that splits an output rotational driving power of the engine into a first split power and a second split power; a continuously variable speed transmission to which the first split power is transmitted, the first split power being transmitted via the continuously variable speed transmission by a shearing resistance of a fluid; and a differential planetary gear system to which the second split power and an output power of the continuously variable speed transmission are transmitted, the first split power and the second split power being combined in the differential planetary gear system; wherein a variation of a rotating speed of the output rotational driving power is absorbed by the continuously variable speed transmission to adjust an output rotating speed of the differential planetary gear system to a constant speed; wherein the continuously variable speed transmission comprises a double-cavity toroidal traction drive; wherein the differential planetary gear system is disposed coaxially with the continuously variable speed transmission; wherein the double-cavity toroidal traction drive comprises output disks which are disposed on opposite sides of the differential planetary gear system, respectively, and an output shaft which supports the output disks; and wherein the output shaft of the double-cavity toroidal traction drive also serves as a sun gear of the differential planetary gear system.