AUTOMATIC READJUSTABLE FRICTION V-BELT VARIABLE-SPEED DEVICE Russian patent published in 2013 - IPC F16H9/10 F16H55/54 

FIELD: machine building.

SUBSTANCE: automatic readjustable friction V-belt variable-speed device includes drive and driven shafts, expanding pulleys installed on them, and a wedge belt enclosing the pulleys. On flanges of drive and driven shafts there installed are cams moving along Archimedean spirals on a freely rotating disc, on which pulleys in the form of circular sectors are fixed. On shafts there installed are cones moving along splines of the shafts. At longitudinal movement of cones there performed are radial movements of balance beams along Archimedean spirals in the discs; as a result, the discs are rotated and move the cams in radial direction. On the side of the cone on the disc there is one Archimedean spiral along which a balance beam moves.

EFFECT: higher reliability of the device.

4 dwg