摘要 |
<p>The device has platforms (10) arranged on top of each other, where the platforms are raised and lowered by a lifting device (15) and are alternatively connected to a drive. The platforms are connected with the lifting device by a pair of camps (18, 19), where the distance of one of the camps of the lifting device is steplessly adjusted in a shifting direction. The adjustable camp is connected with the lifting device by threaded spindles (29, 30).</p> |