| 摘要 |
<p>The ladder has a plane formed of two upright posts (6) and a set of levels (7). A fixed safety element e.g. rigid bar, is fixed on a front face of the plane of the ladder, where the fixed safety element is arranged to grab a link that is arranged with a personal type termination hook for securing progress of a person with regard to the ladder. The fixed safety element is arranged with an energy absorber, where the ladder is reinforced by a side reinforcement, and the fixed safety element is arranged before the side reinforcement.</p> |
