| 摘要 |
PROBLEM TO BE SOLVED: To secure safety by simply hoisting a U-shaped block in a horizontal attitude. SOLUTION: This hoisting accessory for the U-shaped block is used for hoisting the U-shaped block, with the upper end of the outer face of a wall inserted into the swelling section of the U-shaped block forming the swelling section via a slant section. The hoisting accessory comprises a recessed section biting the swelling section, an inner material located on the inside of the recessed section and abutting the inner face of the swelling section, an outer material located on the outside of the recessed section and abutting the outer faces of the swelling section and the slant section, and a substrate continued to the inner material and the outer material and extended inward.
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