| 摘要 |
The frame structure (10) comprises a ladder or a platform and can be moved along a guide (7). A span enables it to rest and support, via rollers (11,11') or support wheels, on one or more running rails (8). - Two opposing frame parts (12,13) are of light metal profiles which comprise two facing, horizontally spaced fixtures (17,18) These working in conjunction with floor parts or rungs (14) extending between the frame parts. |
