| 摘要 |
PROBLEM TO BE SOLVED: To lighten a hoisting jig, use a crane for carrying in and out a heavy large material such as a PC panel for horizontally moving the same forwardly and backwardly, and adjust the left and right positions of the material in a hoisted state. SOLUTION: A pair of left and right vertical beams 11 long in the longitudinal direction are respectively provided with the upper trolleys 16, the left and right upper trolleys 16 are connected with a lateral beam 29 long in the width direction, a pair of left and right lower trolleys 30 are mounted on the lateral beam 29, a pair of the left and right lower trolleys 30 are connected in such manner that an interval therebetween can be adjusted, the hoists 34 are suspended from a pair of the left and right lower trolleys 30, and the legs 14 capable of horizontally supporting the vertical beams are fixed on both ends of a pair of the left and right vertical beams 11.
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