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    • 77. 发明公开
    • FULL TOROIDAL TRACTION DRIVE
    • 全周牵引驱动
    • EP2486306A1
    • 2012-08-15
    • EP10821493.3
    • 2010-10-08
    • Durack, Michael James
    • Durack, Michael James
    • F16H15/38
    • F16H15/38
    • A toroidal variable speed traction drive is provided. The drive comprises a driving disc (15) and a driven disc (16). The discs (15, 16) have a common axis. A plurality of pairs of contacting rollers (A) are interposed between the discs (15, 16). The discs (15, 16) are urged together against the roller pairs (A) by a clamping force. Each of the rollers has a first rolling surface (114), by which it rolls on the other roller of the pair, and a second rolling surface (115) by which it rolls on the toroidal surface of a corresponding disc. Each roller is mounted on a supporting axle (4) about which it can rotate. The rotational axes (111) of the rollers in a pair are supported in a plane that contains the two points (110) where the rollers of the pair contact the discs. At least one of the rollers in each pair is adapted to be moved to adopt a stable position within the plane by the reactionary force exerted on it by the other roller of the pair.