| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a jack member for a distortion adjusting jig, which can reduce maintenance costs and facilitate transport operations. Ž<P>SOLUTION: This jack member 9 for use in the distortion adjusting jig includes: a ram cylinder 27 for adjusting upper and lower positions by making a leading end of a ram 26 abut on an erection piece; a cylinder 29 which supplies a hydraulic fluid to the ram cylinder 27; and a connecting portion 19 which is equipped with a supply channel 19a for supplying the hydraulic fluid to the ram cylinder 27 by connecting the cylinder 29 to the ram cylinder 27. The cylinder 29 comprises a pair of piston portions 30 and 31 which are arranged with a tank chamber 32 in between and which cannot be relatively rotated and can move upward and downward in the cylinder 29, and a rod body 34, the leading end of which is protruded as an operation portion 33 from the cylinder 29 and screwed into the pair of upper and lower piston portions 30 and 31. A screw portion is formed so that the pair of upper and lower piston portions 30 and 31 can be brought closer to each other by turning the rod body 34 in one direction and separated from each other by turning it in another direction. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
|
