| 摘要 |
The rising platform has a shear device (4) including pivoted shear elements (7, 8). The lower regions (7', 8') and upper regions (7, 8) between the shear axis line (5) and the upper platform part (3) and/or the lower platform part (2) can be telescoped by a telescopic drive device (9, 10, 15, 16). each of these regions is fixed at one end to the facing platform part.
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