| 摘要 |
<p>The lifting device (1) has a rotary drive for simultaneously adjusting the length of the telescopic leg parts (7,8,9). Traction cables (11,21) which cross over in the region between the first and second leg part are connected by their first ends to the lower end of the upper leg part of the second leg and first leg and by their second ends (18, 28) to the upper leg part of the first leg and second leg. The traction cables are assigned to two groups of guide pulleys (12 to 16).</p> |
