| 摘要 |
In the case of a drive arrangement for sectional doors having door sections which are connected to one another in an articulated manner and are guided in guide rails 5, 6, 7 which have longitudinal legs 5, which run alongside the side borders of the door opening, and legs 7, which adjoin said longitudinal legs at the top by means of arcuate transition elements 6 and extend into the room interior, the open door 1-4 is preloaded in the closing direction by its own weight or by springs. For the opening drive, traction cables 11, 12 acting laterally on a door section 1 are provided and are guided via deflecting rollers 15, 16, along the longitudinal legs 5 of the guide rails, to winch drums 9, 10, which can be driven by a common motor drive unit 8. The winch drums 9, 10 are arranged directly alongside one another at a distance from the top door-opening border and the cables 11, 12, which lead away therefrom approximately parallel to one another, are guided, via directing rollers 13, 14, apart from one another and towards the deflecting rollers 15, 16, which direct them along the longitudinal legs 5 of the guide rails 5, 6, 7. <IMAGE> |
