| 摘要 |
<p>The device (1) has two scissor members (3, 4) connected in pairs through a rotation axis (2), and a drive (5) erecting and lowering the members by a traction unit (6). Two coupling bridges (8, 9) are connected via a guide (7) and support a deflecting roller for the traction unit. The bridge (9) has thrust struts (10, 11) that are connected with the members on a common side with respect to the axis. The bridge (8) has a spreading body (12) that lies against two curved contact webs (13, 14) that are assigned to the members at a side turned away from the thrust struts with respect to the axis.</p> |
