| 摘要 |
PROBLEM TO BE SOLVED: To provide a bush mounting device on a piston rod of a fluid pressure cylinder in which the sufficient strength is obtained, and any machining to the piston rod is unnecessary.SOLUTION: A connection hole part 25 to which a fore end of a piston rod 11 is fitted is formed in a bush 21. A fastening inner cylinder part 24 having a male screw part 26 therein is provided on an outer circumferential surface. The movement to the fore end side is regulated by the fastening inner cylinder part 24. Three or more wedge members 31 each having a pressure-bearing tapered face 34 with its thickness being gradually increased toward the fore end side from the rod base end side on its outer circumferential surface are arranged on the outer circumferential part of the piston rod 11 in the circumferential direction. A female screw part 42 to be screwed with a male screw part 26 is formed on its upper inner circumferential surface. A fastening outer cylinder 41 having a pressure-applying tapered face 43 to be slidably brought into contact with the pressure-bearing tapered face 34 of the wedge member 31 with its diameter being gradually increased from the rod base end side to its fore end side is provided on the lower inner circumferential surface. |
