| 摘要 |
A sack trolley (1) comprises a support frame (2) presenting a lower pair of carrying wheels (4) and a hoist mechanism (6) for climbing steps, which comprises a lifting arm (10) equipped with support rollers at its free end and which can be swivelled about a swivelling axis (S) parallel to the carrying wheel axis (L) by means of a crank drive (8). In order to achieve step-climbing assistance which is simple, space-saving, easy to handle and functionally safe, the lifting arm (10) is comprised of a swing guide component (11) swivel-mounted about the swivel axis (S) and a support component (12) taking up the support rollers (13) and longitudinally displaceable compared to the swivel guide component (11), whereby the crank drive (8) is articulated on the support component (12) with its crank arm (9).
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