| 摘要 |
<p>The proposed apparatus consists of a rotating clamp, the jaws (32 and 33) of which hold respectively the external and internal wall of a roller, the rotating clamp being connected to the crane hooking device by means of a support moving along a guide (30) foreseen on the rotating clamp (31) body. The hold on the internal wall of the roller (R) takes place only along a portion of it; there is also a means apt to compensate the reduction in the holding force taking place during the rotation of the hollow cylindrical body (R). In particular this means can be a load cell. The radius of the guide (30) is less than half of the maximum transversal diagonal (D) of the hollow cylindrical body (R).</p> |
