| 摘要 |
PURPOSE:To make the supporting structure of a force-fit guide member compactible, by installing the force-fit member, which expands the diameter of a circular elastic material to be pressed in the inner circumference of a bearing, in a state of being coaxial with a force-fit cylinder as well as of being detachable. CONSTITUTION:A seal force-fit guide member D is of hollowlike member in type and fitly installed inside a force-fit member 13 of a seal force-fit mechanism B detachably via a loading and unloading mechanism E. This loading and unloading mechanism E has a loading and unloading operation device 24, and when a pressure fluid is fed to a cylinder upper chamber from a feed-discharge port 23, a holding cylinder 19 goes down via a piston 20 and the seal force-fit guide member D is inserted into the cylinder 19 like a spitting form while a spherical body 26 is projected out of a holding opening 25 via a spring 28 whereby the seal force-fit guide member D is caught in the holding cylinder 19. In addition, when the pressure fluid is fed to a cylinder lower chamber from the feed-discharge port 23, the said catching by the holding cylinder 19 is released. |
