DEVICE FOR SUBJECTING A SHAFT TO A COMBINED SIMPLE ROTATION AND ALTERNATING ROTATION OF LIMITED EXTENT ABOUT ITS OWN AXIS

摘要

The device has springs arranged diametrically opposite with respect to a shaft that is coupled to a generator of torsional vibrations. The springs are rigidly coupled between first supporting elements that rotate with the shaft and second supporting elements that are rigidly coupled to a gear system that is freely mounted on the shaft. The gear system is coupled to a motor for actuating rotation of the shaft.