| 摘要 |
<p>PROBLEM TO BE SOLVED: To adjust a position of a split type pressure disc, and to fix the disc without causing the caught-in of fingers between plates in high-stress states when installing the split type pressure disc without completely releasing an axial force of an anchor.SOLUTION: A split type pressure disc comprises: two thinned jacks which are formed into half-doughnut shapes; and a connecting pipe which connects between one end sides of the two thinned jacks, and connects the jacks so that another end sides of the two doughnut shaped thinned jacks can be opened in such a manner to approach and separate from each other. The two thinned jacks are constructed so that two pieces of metal thin plates exhibiting half-doughnut shapes are overlapped on each other, and two pieces of arc-shaped spacers and a linear spacer which are manufactured by being matched to shapes of the two pieces of the metal thin plates are sandwiched between the two pieces of the metal thin plates, and welded.</p> |
