| 摘要 |
PROBLEM TO BE SOLVED: To provide coupler structure of shells capable of certainly connecting both of the shells to each other and certainly preventing leakage of fluid from a connecting part. SOLUTION: A coupler main body 2 is constituted by connecting a plural number of circular arc members 17 to each other and forming them in a ring, connecting holes are respectively drilled in the shell axial direction on both end parts in the circumferential direction of the circular arc members 17, the end parts in the circumferential direction of the circular arc members 17 are overlapped on each other, connecting pins 18 are fitted in both of the overlapped connecting holes, and a plural number of the circular arc members 17 are connected to each other by the connecting pins 18 and externally installed on both of shells 1, 1.
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