| 摘要 |
The invention concerns a suspension device for assembly ladders on a pole beam 3, which device has a horizontally- orientated track attached to the pole beam 3 and runners attached to the upper end of the ladders on which the ladders are suspended on the track for movement along the track. The track is a tube profile 4 which has an opening 7 at the bottom, in which there is a slider 5 which has a running wheel 6. Fixing projections 9 for ladders 2 connected to the slider 5 have been taken through the opening 7 and the running wheels 6 move on both sides of the existing surfaces of the opening 7. The slider 5 has been so designed that with the running wheels 6 it essentially fills the cross-sectional area of the interior of the track profile 4. <IMAGE> |
