| 摘要 |
PROBLEM TO BE SOLVED: To provide a coupling structure of a power transmission shaft improving safety of operation and reducing cost especially in a use for a vertical shaft pump by adjusting an attachment location of a shaft coupling without processing an adjusting ring, and simplifying structure thereof and improving property of work. SOLUTION: This structure is provided with an adjusting ring device 40 including an adjusting ring 42 adjusting a location of a coupling part 24a along a longitudinal direction of a shaft 18 meshing with an external thread provided on the shat 18, on the coupling part 24a of at least one side of a shaft coupling 22 coupling two shafts 18, 20 in such a manner capable of transmitting power. |
