| 摘要 |
PURPOSE:To obtain a jig which can execute smoothly the pressure test without twisting the specimen by making a ball bearing exist between thrust wheels provided at the fixing part of a pressure wall and the fixing part to one plane of a specimen. CONSTITUTION:At an attachment 11 fixed at a pressure wall (b), a thrust wheel 3 to support with a shaft 2 is provided. A thrust wheel 4 is screwed to the edge of a screw shaft 6 on the same central line as the shaft 2, an end plate 10 is screwed to other edge of the shaft 6 and the fixing part to a specimen (a) is obtained. A ball bearing 5 lies between thrust wheels 3 and 4, and junctioned with a bolt 7 and a nut 8. Thus, when the specimen (a) is pressured, for the pressure wall fixing part and the specimen fixing part, the sliding resistance is made smaller by the ball bearing 5 and the specimen (a) can be operated in the optional direction of one plane, and therefore, the twisting, pushing and pulling pressure can be prevented.
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