PURPOSE: To obtain a temporarily roof-bridging structure more easily than a prior art structure therefor.
CONSTITUTION: Two main cables 1 are spanned parallel with each other above a working site along its longitudinal direction. A plurality of trucks 3 are movably supported by each of the main cables 1. The end parts of a cable 6 for horizontal movement are connected with the two trucks being positioned at both ends of all the trucks 3 and the trucks 3 are moved through the cable 6. A guide member 10 is hung from the trucks 3 through a wire 13, and is hoisted and lowered by winding and unwinding the wire 13 by means of winches 12, 4. An air film 15 is spread between the guide members 10, and a plurality of tension cables 21 are tightened between the guide members 10.
SUZUKI AKIYOSHI
NAKAMURA TOSHIHARU
KOBAYASHI MINAKO
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