| 摘要 |
Scaffolding unit to be attached to the deck structure of a bridge or similar comprises a set of arms (2) for carrying working levels and the support structures needed in work and an attachment frame (1) for attaching the set of arms to the upper surface of the deck structure. The set of arms (2) is connected to the attachment frame by means of a pivoted parallelogram (3, 6, 11, 12). |
