| 摘要 |
In a torsional vibration damper two flywheel mass arrangements 5, 11 are able to rotate relative to each other about an axis 1. The flywheel mass arrangements 5, 11 are connected by a coupling mass arrangement 19 to transmit rotary forces. The flywheel mass arrangements 5, 11 employ axially spaced sheet metal parts 15, 17 having hubs 6, 8 with a rotary bearing 9. The coupling mass arrangement 19 is an elongate strap 21 disposed between the parts 15, 17. Rollers 25, 29 at the ends of the strap 21 locate in shaped recesses 27, 33 in the parts 15, 17 and the rollers 25, 29 are guided along guide paths 35, 37, 47, 49 defined by the recesses 27, 33. As the flywheel mass arrangements 5, 11 rotate relative to one another to tend to transmit vibration, the rollers 25, 29 are guided along the guide paths to cause the coupling arrangement 19 to compensate and dampen such vibration. Each part 15, 17 may have a plurality of coupling mass arrangements and recesses. One or both flywheel mass arrangements (5c, 11c, Fig 5) may have a continuous recess (65). |
