PLANETARY GEAR Russian patent published in 2013 - IPC F16H1/32 

FIELD: machine building.

SUBSTANCE: planetary gear comprises an eccentric cage (1), satellites (2) with external teeth and holes, a fixed central wheel (3) with inner teeth, cheeks (4, 5, 6) with holes connected by connecting rods (7) and bushings (8), and freely hollow rollers (9) installed in holes of satellites and cheeks. Cheeks (4, 5, 6) are made with stepped holes, the smaller diameter of which is equal to the diameter of the connecting rod (7), the larger one - exceeds the diameter of the outer surface of the hollow rod (9) by the value of interaxial distance of the gear and is equal to the diameter of satellite (2) holes. Hollow rollers (9) are made with an inner diameter exceeding the diameter of the outer surface of the connecting rod (8) by the value of at least the interaxial distance of the planetary gear, and are arranged on the connecting bushings (8) eccentrically with a guaranteed gap.

EFFECT: increased operational reliability.

2 dwg