| 摘要 |
<p>The ladder (1) has rungs (4) for connecting two ladder beams (2, 3). A locking device (5) is adjustably supported parallel to a longitudinal axis of the ladder at the beam (2). The device is arranged over a fixing device (6) in two positions. The fixing device has rails fastened parallel to the beam (2). The beam (2) is fastened over a support or directly over a pit level, such that the beam (2) is tiltable around a swivel axis.</p> |
