| 摘要 |
PROBLEM TO BE SOLVED: To provide the subject structure enabling flotage rings to be mounted on respective supports easily and also enabling the movable range of each of the flotage rings along the corresponding support to be controlled easily and properly. SOLUTION: This laver net setting structure has supports 1, the corresponding fixing strings 22 each with great coefficient of friction, the corresponding flotage rings 23, the corresponding mounting ropes 24 each with a specific gravity of >=1.2, and the corresponding suspension ropes 25; wherein each of the flotage rings 23 has a body 31 equipped with an opening 30 for mounting the support with the ring, a fixture 33 for the mounting rope 24, and fixtures 36a, 36b for the suspension rope 25. This structure has such a scheme that, each of the flotage rings 23 is idly engaged on the corresponding support 1 by radially inserting the opening 30 of the ring against the support 1, one end of each of the mounting ropes 24 is attached to the corresponding fixing string 22, while the other end to the corresponding fixture 33, thereby enabling the movable ranges of the flotage rings 23 idly engaged on the corresponding supports 1 to be controlled.
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