| 摘要 |
<p>The lifting device has a carrier system (T) e.g. gantry crane, with a carriage (4) that is movable on a guiding rail (12) in two directions, where a lifting system (3) is coupled to the carriage. A traction unit e.g. rope (2), is suspended by a load bearing device from the lifting system. A hub cylinder (6), a lever (8), and a roller (10) are suitably coupled with the carriage to block the carriage by self-locking in directions (X1, X2) opposite to the guiding rail, after releasing by the traction unit.</p> |
