PLANETARY TRANSMISSION Russian patent published in 2012 - IPC F16H1/48 

FIELD: machine building.

SUBSTANCE: planetary transmission comprises central gear wheels 1, 2, spider, planet pinions 3 fitted on spider shafts 5 with bearings. Bearings are fitted concentrically with shafts in spider case. Outer diameter of working section of shaft 5 interacting with planet pinion 3 is smaller than planet pinion inner diameter by magnitude of double eccentricity. Axes of shafts are displaced relative to those of planet pinions by magnitude of planet pinions. Difference between OD of shaft 5 and ID of planet pinion by double eccentricity allows planet pinion 3, both to oscillate about surface of contact with shaft working section and to roll about shaft entire surface.

EFFECT: uniform wear of rolling surface and entire planetary transmission.

3 cl, 2 dwg