| 摘要 |
A building structure consisting of a framework of posts (1) and beams (2) of profile material which is covered on the outside with sheet-like material (10) such as plastic foil, wherein on at least the roof part the foil is fixed with a longitudinal edge to a longitudinal beam (5) connected to the framework, wherein a second longitudinal beam (15) is fixed to the parallel opposite longitudinal edge of the foil and is driven rotatably on the axis thereof such that the second beam winds itself into respectively out of the foil, and the drive is formed by a reversible motor (24) which is provided with a resistance-sensitive sensor element which controls the power supply of the motor for switch-off thereof, so that the tension in the foil is always adjusted optimally. |
