PLANETARY REDUCTION GEAR Russian patent published in 2000 - IPC

FIELD: mechanical engineering; planetary reduction gears. SUBSTANCE: internal meshing planetary reduction gear with little difference in number of gear teeth has housing consisting of front cover, internal tooth gear and rear cover with driven shaft. Axis of housing rotation is displaced relative to axis of driving shaft installed in housing on eccentric bushings. Driving shaft has three eccentrics arranged at angle of 120 degrees relative to each other. Planetary pinions are installed on driving shaft. Bearing holes of planet pinions are displaced relative to their geometrical centers. Eccentricities provide constant contact of planet pinion and gear. EFFECT: increased efficiency and gear ratio at small overall dimensions of reduction gear. 5 dwg