| 摘要 |
<p>The head (20) has a deflection device (40) arranged on a cantilever arm (22). The deflection device is provided for a supporting rope. A connection device (30) is provided on the cantilever arm, where the cantilever arm is adjusted in a connection position. The cantilever arm is positioned for longitudinally attaching a mast extension to the masts, and is pivotally mounted on a base (24), which is connected with an upper end of the masts. The cantilever arm has a guiding profile (12) corresponding to a guiding profile of masts so that a sliding carriage is moved from the masts to the arm.</p> |
