Device for torsionally vibrating a rotating shaft

摘要

The device has springs (16) arranged diametrically opposite with respect to a shaft (11) that is coupled to a generator (14) of torsional vibrations. The springs (16) are rigidly coupled between first supporting elements (17) that rotate with the shaft (11) and second supporting elements (18) that are rigidly coupled to a gear system (13,25,27) that is freely mounted on the shaft (11). The gear system (13,25,27) is coupled to a motor (12) for actuating rotation of the shaft (11).