STEPLESS REVERSIBLE VARIABLE-SPEED DRIVE Russian patent published in 2004 - IPC

FIELD: mechanical engineering. SUBSTANCE: invention relates to belt variable-speed drives with stepless changing of angular velocity and direction of output shaft rotation. It can be used in instrument engineering, drives household appliances, vehicles, etc. Proposed stepless reversible variable-speed drive contains housing 1, input shaft 2 with fitted-on carrier 4 made in form of three-prong fork carrying of each end two ends two pairs of balance rollers 6 and on third end, intermediate shaft 8 with adjustable extensible sheaves 11, 12, trunnion 10 installed on input shaft 2 and rigidly connected with housing 1, extensible sheave 9 installed on trunnion 10 and coupled by drive belt 14 with sheave 11 and rollers 6, output shaft 3, extensible adjustable sheave 13 installed on output shaft 3 and coupled with sheave 12 and rollers 6 by drive belt 15. EFFECT: increased gear ratio and improved reversing of output shaft at constant direction of rotation of input shaft. 2 dwg