| 摘要 |
A lifting device for suspending a flying form table truss has a horizontal lower truss arm for insertion into the flying truss, a horizontal upper truss arm extending abov e and parallel to the lower truss arm, an intermediate vertical section connecting one end of the upper truss arm to one end of the lower truss arm, and a trolley, provided with a crane hook connector, on a trolley track extending along the top of the upper truss arm. By adjusting the position of the trolley along the upper truss arm, the crane hook connector can be located above the centre of gravity of the flying form table truss.
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