| 摘要 |
<p>A vibratory compactor vehicle (10) includes a roller drum (12) provided with internal eccentric weights (38, 82) which are rotated for imparting vibration to the drum. The weights (38, 82) are mounted upon concentric shafts (34, 68) having mating, helically splined surfaces (66) whereby longitudinal movement of one of the shafts (34, 68) with respect to the other brings relative rotation of the weights (38, 82) thereby changing the amplitude of the resulting vibration.</p> |
