JPS56136207A - Multistage rolling mill - Google Patents

Abstract

PURPOSE: To prevent the roll chock from being loaded with the bending moment, by making the beam and the backup roll jointly movable in the horizontal direction, and by moving the end of the drum of the backup roll to a suitable position corresponding to the breadth of the rolled material.

CONSTITUTION: The beams 10, 13 are arranged respectively between the backup roll chocks 5, 6 and the roll's vertical position adjuster 11, and between the backup roll chocks 8, 9 and the roll's vertical position adjuster 15; the movers 21, 23 are respectively connected with the beams 13, 10 so as to be movable in the vertical direction but immovable in the direction of roll axes. The movers 21, 23 move the beams 10, 13 and the backup rolls 4, 7 jointly in the direction of roll axes correspondingly to the breadth of the rolled material. These movements generate a rolling load which is transmitted from the chocks 8, 9, 5, 6, through the beams 10, 13 to the roll's vertical position adjusters 11, 15 so that the distance between the loading points does not generate any eccentric bearing load. Besides, since the beams 10, 13 are respectively provided with the thrust blocks 10' and 13', the roll chocks 8, 9, 5, 6 sufficiently endure the bending moment owing to the distance between the loading points.

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