| 摘要 |
A toroidal variable speed traction drive is provided. The drive comprises a driving toroidal disc assembly (4) and a driven toroidal disc assembly (3). The toroidal disc assemblies (3, 4) have a common axis of rotation. A plurality of roller assemblies are interposed between the toroidal discs (3, 4). Each roller assembly comprises at least one roller (16). The toroidal discs (3, 4) are urged together against the interposed roller assemblies by an axially directed clamping force. Each roller (16) of each roller assembly contacts each toroidal disc (3, 4) at contact points. The driving toroidal disc assembly (4) is driven by an input drive shaft (14) which provides an input torque. The driven toroidal disc (3) drives an output structure (5), that rotates around the common axis of rotation, the output structure (5, 12) driving an output shaft (13). An interposed clamping arrangement (1, 5) is provided between the driven toroidal disc (3) and the output structure (5, 12), the interposed clamping arrangement (1, 5) provides the axially directed clamping force which is proportional to an output torque experienced by the output shaft (13). |
