| 摘要 |
<p>The rail (1) has a body (2) including elongate stringers (3, 4), and an arm (6) extending perpendicularly to the stringers, where fixing units (8, 9) attach the rail to a scaffolding structure. A locking unit (10) locks a fixing element (81) that engages the arm. The locking unit is movable between a closing position in which a barrier is formed to prevent the fixing element from engaging with the structure, and an opening position in which coupling of the fixing element with the arm is released. The locking unit includes a return unit for bringing the locking unit to the closing position. An independent claim is also included for a safety installation unit.</p> |
