| 摘要 |
PROBLEM TO BE SOLVED: To reduce the loss of tensile force of a fastening bolt by decreasing frictional force between the fastening bolt and taper bushes. SOLUTION: A taper bush to be inserted together with a fastening bolt 2 into through holes of both bodies to be fastened 1a, 1b is formed by combining an outer taper bush 4o whose inner surface is tapered with a taper bush 4i whose outer surface is tapered, and the fastening bolt 2 is a bolt having no tapered part. The outer taper bush 4o is brought in pressure-contact with the through holes of the bodies to be fastened 1a, 1b by receiving one of the inner and outer taper bushes 4i, 4o and pressing the other one by a hydraulic loading device 9, and both bodies to be fastened 1a, 1b are fastened to each other by applying tension to the fastening bolt 2 with fitting nuts 3a, 3b by the hydraulic loading device 9. |
