REDUCTION GEAR LUBRICATION SYSTEM Russian patent published in 2016 - IPC B64C27/14 F16H57/04 

FIELD: aviation.

SUBSTANCE: helicopter steering gear comprises case, output shaft for connecting with steering rotor installed with possibility of rotation in the housing and having open end in it, inlet element installed with possibility of rotation in the housing, gear providing connection, transmitting power between input element and output shaft. Blade pitch control shaft is arranged inside the output shaft with possibility to revolve therein and move relative to it along the axis of output shaft rotation. Driving element for implementation of axial movement of the pitch control shaft is movable in axial direction of the output shaft, but is locked by rotating with it. Bearing assembly is located between the pitch control shaft and drive element to ensure relative rotation between them. Reduction gear includes at least one structural element for removal of oil scattered inside the housing during operation, in the direction of output shaft open end.

EFFECT: reliable lubrication of bearing and increased service life of bearing.

15 cl, 4 dwg