| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a flange separation prevention device which can complete the proper fastening work of a bolt in a short time irrespective of a pipe shape, and can surely prevent the separation of a flange.SOLUTION: A flange separation prevention device 10 comprises a grip member 11 having wall parts 11y, 11z which are erectly arranged at both sides of a base bottom part 11x, and gripping a pair of flanges 3d, 4d, and a pressing member 14 arranged at the grip member 11 so as to be retractable. An internal bottom face 11a of the base bottom part 11x is arranged so as to oppose external peripheral faces of a pair of the flanges 3d, 4d, and the separation of a pair of the flanges 3d, 4d is thus prevented. The flange separation prevention device also comprises a pressing direction conversion member 18 having pressed faces 12d, 13a which are pressed by the pressing member 14, and a flange pressing face 12a which presses one flange 3d to a direction which is different from a forward/backward direction of the pressing member 14.</p> |
