| 摘要 |
Retractable cover for covering a sports facility, playground, commercial or industrial outdoor installation comprising a flexible material (8) attached to a variety of trusses incorporating rolling devices that move along parallel guide rails (4a and 4b) from an extended position in which they cover an entire area to a retracted position in which they occupy a small space. A mobile truss (6) connected to a drive mechanism and a transmission system moves simultaneously along the guide rails (4a and 4b), pushing the other trusses during retraction. When the retractable cover is extended, the retractable truss (6) moves in the opposite direction, extending the flexible material (8), which tightens and pulls successively on all the trusses to cover the entire area that is to be covered. |
