TORSIONAL AND TRANSLATIONAL VIBRATION REMOVING DEVICE

摘要

A torsional and translational vibrational removing device (34) or balancer includes the combination of at least one annular torsional vibration damping mass (42) and a plurality of translational vibration compensating masses (50). The annular torsional vibration damping mass (42) can be positioned within an annular groove (46) in a housing so as to be capable of freely rotating during rotation of the balancer (34). The annular torsional vibration damping mass (42) can also be provided with an annular groove (46) that receives the translational vibration compensating masses (50). The compensating masses (50) are free to rotate within the annular groove (46) in the torsional vibration damping mass (42) so that during rotation of the balancer (34), the compensating masses (50) move within the annular groove (46) of the damping mass (42) to assume a position which reduces translational vibration while the torsional vibration damping mass (50) rotates to reduce torsional vibration.