| 摘要 |
<p>An apparatus comprising a shaft (5) and a balancing device for balancing the shaft (5), wherein the shaft (5) is mounted for rotation and the balancing device is mounted on the shaft (5) to rotate with the shaft (5), wherein the balancing device comprises first and second leaf springs (1) and a balancing weight, wherein the leaf springs (1) extend axially along the shaft (5) and are disposed on opposite sides of the shaft (5) in diametrically opposed relation, wherein each leaf spring (1) has one end secured to the shaft (5) and its remaining length unencumbered to flex upon rotation of the shaft (5), wherein the balancing weight is mounted on a remaining length of a leaf spring (1), characterised in that the balancing device further comprises a coupling mechanism (11, 23, 31) which couples together the remaining lengths of the leaf springs (1) so that the remaining lengths flex in unison.</p> |
