| 摘要 |
PROBLEM TO BE SOLVED: To shorten the period required to clean a cylindrical pile such as a steel-pipe sheet pile when a platform serving as the scaffold of a crawler crane is provided in a position above the cylindrical pile in a limited working yard. SOLUTION: This cleaning jig for the inside of a cylindrical pile, for use in removing matter clinging to the inner peripheral surface of the cylindrical pile such as a steel-pipe sheet pile, has a main body part 10A which can be inserted into the hollow part of the cylindrical pile. The main body part 10A has a plurality of brushes 3,... which abut the inner peripheral surface of the cylindrical pile when it is inserted into the hollow part of the cylindrical pile. The main body part 10A comprises a plurality of plates 2,... having an outer peripheral diameter smaller than the inner peripheral diameter of the cylindrical pile and having the brushes 3,... mounted on its peripheral edge, and a shaft portion 1 on which the plates 2,... arranged vertically in parallel relationship are fixed and supported.
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