| 摘要 |
<p>A system comprising: a mast or rail structure (1, 24), a movable work platform (2) which is connected to the mast or rail structure; a lifting and lowering device (7), under whose control the work platform can be moved along the mast or rail structure; a movable frame structure (12) which is connected to the mast or rail structure; and an upper support (14) and a lower support (13) which are positioned at a distance from each other in the vertical direction and by means of which the frame structure is connected to the mast or rail structure. Said frame structure extends past the work platform in such a way that the upper support is placed above the work platform and the lower support is placed below the work platform. In a corresponding apparatus, the frame structure (12) is arranged to be connected to the mast or rail structure. A corresponding crane device also comprises a crane device (11) for manipulating loads and weights, connected to the frame structure.</p> |
