| 摘要 |
PROBLEM TO BE SOLVED: To enhance the breaking load accuracy and gap adjusting accuracy of a shear plate. SOLUTION: A rolling reaction force restrictor 16 equipped with the shear plate 15 is provided between bearing boxes 5 of both ends of a moving roll 3 and a gap adjusting device 7 for moving the bearing boxes 5 to adjust a gap. The shear plate 15 has the peripheral frame part 17 coming into contact with one of the bearing boxes 5 and the peripheral frame part 17 and a small thickness breaking protruding part 19 coming into contact with the other one of them and protruding from the inner peripheral surface Si or outer peripheral surface So of the peripheral frame part 17 without interposing a notch.
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