| 摘要 |
<p>A device (3) (3') for moving an excavating tool (1) for excavating soil that is suspended vertically having a first body (3a) fixed to the tool (1) and a second body (6), which rotates with respect to the first body (3a); the device (3)(3') moreover comprises constraint means (6b), fixed to the second body (6), for fixing the device (3) (3') to suspension structures (30). Rotation means (4, 5) (10) enable a movement of rototranslation between the first body (3a) and the second body (6). The movement of rototranslation is originated by the force of gravity that acts on the masses of the tool (1).</p> |
