| 摘要 |
<p>The roof panels, which are preferably made from sheet metal, rest on top of profiles (31) on the upper girders (20) in the roof beams (12). Safety tabs (26) protrude upwards from the profiles to a height above the latter and holder plates (29.1-29.3) are fitted over these tabs. Each holder plate has a wedge (28) which can be passed through a slot (27) in a tab in order to secure it in place. At least two holder plates are joined to a vertical body for securing a safety tension cable (35). When the plates are fixed into position the tension cable can be tensioned in its length direction along the profiles. A fastener device (37) which can be slid along the tension cable is used to connect, preferably releasably, a safety cable (36) to the tension cable. The safety cable is connected, preferably releasably, to a harness (37) worn by the workman (16.1, 16.2).</p> |
