| 摘要 |
PROBLEM TO BE SOLVED: To simplify separation of a taper pressure member and a taper boss part, fastened together by a shaft fastening device by an unfastening bolt preset at a taper pressure member, from each other. SOLUTION: A threaded hole 21 having a recessed containing seat 23 in which a U-shaped 22 is fitted is formed in a taper pressure member. The U-shaped washer 22 is provided to have thickness higher than a distance between an unfastening bolt 25 and a taper boss part 2. The unfastening bolt 25 is prefastened against the containing seat of the taper pressure member and set thereat with the U-shaped seat 22 interposed therebetween. After, during unfastening of a shaft fastening device, a bolt 25 for unfastening fastened against and set at the threaded hole 21 of the taper pressure member is unfastened and the U-shaped washer 22 located at the containing seat is pulled out, the taper pressure member is separated away from the taper boss part 2 by screwing in the unfastening bolt 25. |
