MEASURING ROLLER FOR DEVIATION OF FLATNESS

摘要

PROBLEM TO BE SOLVED: To obtain a measuring roller which is used suitably at a high strip temperature by arranging a measuring sensor inside a recess at a prescribed distance from a wall and providing a cooling duct which is opened in the region of the measuring sensor. SOLUTION: This measuring roller 1 comprises many recesses 2, and the recesses 2 are dispersed in the width direction of the roller. the recesses 2 are provided with cylindrical covers 4, and piezoelectric measuring sensors 3 are inserted. The measuring sensors 3 are extended between bottom parts of the recesses 2 and the covers 4. The covers 4 have counter sinks. Heads 6 of tension bolts 6 which are screwed to threaded holes inside the measuring roller 1 are installed inside the sinks. When the tension bolts 7 are used, the covers 4 are clamped to the bottom parts of the recesses 1 together with the measuring sensors 3. Ducts 14 which are parallel to the axial direction are opened inside a ring-shaped gap 11 inside the measuring roller 1, and a cooling medium flows to the ring-shaped gap 11 through the ducts 11 from a rotating distributor.