| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem of a conventional hanger having a structure in which clamps at both ends of an expansion beam are fixed and other clamps are arranged at lower parts of rollers and parallely arranged three beams which are different in length are extended and contracted to extend and contract the clamps in an equally spaced manner that there are level differences equivalent to side plates structuring the beams among the beams as a roller rolls a lower part side plate of an adjacent beam and thus heights of clamps between beams to be extended and contracted become different.SOLUTION: The expansion beam hanger device includes a main beam 1 and two slide beams 2a, 2b, slidably and parallely arranged in a bottom face of the main beam 1, for sliding in opposite directions while facing to each other. In the expansion beam hanger device, a projecting part 4a projecting downward from the main beam 1 is arranged for the slide beams 2a, 2b and hook attaching holes 6 arranged with spaces equivalent to extension and contraction pitch widths of the slide beams are provided in the projecting part 4a. |
