Passive dynamic vibration absorber

摘要

The present invention is related to a dynamic vibration absorber for mounting onto a shaft (1), characterised in that the absorber comprises an internal hollow cylindrical body (2), an external hollow cylindrical body (3) and at least one ring of viscoelastic material (4). The internal hollow cylindrical body is arranged for mounting onto the shaft. The ring of viscoelastic material is interposed between the internal and external cylindrical body. The internal and external hollow cylindrical bodies and the ring of viscoelastic material may be each comprised of two halves, sectioned along a plane comprising the centre line of the cylindrical bodies or the ring.