| 摘要 |
Each profile has a longitudinal recess (20, 22) which have their bottom areas turned towards each other when the profiles are connected to the lift shaft (40). Guides (12) are connected to supports (3) which have adjusters to tension them against the base areas of the recesses (20, 22). One of the profiles has a longitudinal rack, and on the support (3) or lift cage (4) is fitted an electric motor (8) which, via a gearbox (9), drives a gearwheel (10) which works in conjunction with the rack. Any play between the gearwheel (10) and the rack is eliminated by adjusters (12). |
