| 摘要 |
<p>The device has a carriage (13) movable along a cable (11), and upper, lower and intermediate anchoring points. The cable has a portion that is associated to a curved profile (12) along which the carriage is displaced. The portion is placed between two consecutive anchoring points in a manner to be stretched between the points. The carriage has a frame (24) supporting four upper wheels (18) that permits displacement of the carriage along the profile.</p> |
