| 摘要 |
The invention relates to a high-speed industrial roller door ( 1 ) comprising a door leaf ( 2 ) that is guided in lateral guides ( 4 ) and a drive that acts on the door leaf ( 2 ) to displace the latter from an open position into a closed position and vice versa. According to the invention, the door leaf ( 2 ) is held in the open position so that adjacent areas of the door leaf ( 2 ) are not in contact with one another, in a spiral section ( 42 ) of the lateral guides ( 4 ) located in the vicinity of the door lintel. The roller door also comprises a weight compensation device ( 6 ). The drive has two extension aims ( 54 ) that are coupled via joints to the lintel end of the door leaf ( 2 ), said aims ( 54 ) being situated at a distance from one another across the door width and being synchronously pivoted about a pivoting axis in a central area of the spiral section ( 42 ). The distance between the coupling points ( 543 ) of the extension arms ( 54 ) on the door leaf ( 2 ) and the pivoting axis of the extension arms ( 54 ) can be varied. This permits the provision of a roller door ( 1 ) with a drive that is situated near the door lintel, for which the degree of potential damage during a collision with the door leaf ( 2 ) is reduced in relation to prior art.
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