PLANETARY GEAR TO AUTOMATIC HYDROMECHANICAL GEAR BOX Russian patent published in 2010 - IPC F16H1/28 F16H21/14 

FIELD: engineering industry.

SUBSTANCE: planetary gear includes housing (I), epicycle (2), the internal circuit of which is made in the form of epitrochoid (3) outlined with peaks of three-angular rotor (4). In rotor (4) body there located is bell crank (5) with possibility of relative rotation. Bell crank (5) is made eccentrically in relation to sun wheel (6) united with it and the centre of which coincides with centre of epicycle (2). Radii of sun wheel (6) and bell crank (5) are in the ratio 2:3, and their eccentricity comprises half the radius of sun wheel (6). Side surface of rotor (4) includes pin (7) for being aligned with radial slotted lever of carrier (8). Idle gear (9) is fixed in housing (I) and installed between cog wheel (10) of spline coupling and gear rim (12) of internal engagement of epicycle (2).

EFFECT: invention has the possibility of short-period covering of opposite directed transmissions within single planetary row eliminating power flow break, and allows essentially enlarging variation range of transmission ratios; design is simplified, reliability and economy are improved.

1 dwg