| 摘要 |
Device for protective-covering with canvas-sections (3, 4) which are adapted to be joined and stretched over beams (1), which extend over a space-portion to be a protective-covered. The canvas-section (3, 4) exhibit a longitudinal tension-element (19, 20) along at least one edge-portion (8, 10), adapted to extend in the longitudinal direction of a beam. The tension-element consists of a strip, string or similar and the edge-portion is adapted to overlap the adjacent edge-portion of and adjacent canvas-section. The beams (1) exhibit a cross-sectionnaly concave, upwardly facing surface (11), defining a groove, in which the tension-elements (19, 20) extend. These are adapted, at their ends, to be secured or connected to the respective ends of further tension-elements so that the tension-elements can be stretched over the provided beams. |
