| 摘要 |
PROBLEM TO BE SOLVED: To increase liftable height of a ceiling casing and to correspond to the enlargement of the casing, by integrally providing a leg frame extending downward at both ends of a hoisting beam and hoisting a plurality of hoisting points formed at lower positions of the leg frame with an overhead crane. SOLUTION: A leg frame 10 extending downward is integrally formed at both ends of a hoisting beam 5 for handling a ceiling casing 4 of an exhaust heat recovery boiler, as a matter to be hoisted. This leg frame 10 comprises leg portions 10a trailing downward from the both ends of the hoisting beam 5, overhang portions 10b overhanging outward from the lower end of the leg portions 10a, and a connecting beam portion 10c for interconnecting tips of the overhang portions 10b, and respective two hoisting points 9 are formed on the connecting beam portion 10c. The central part of a wire rope 8 whose both ends are connected to the hoisting points 9 is hoisted each overhead crane 3. Thus, liftable height of the ceiling casing 4 can be increased.
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