DRUM TYPE RUNNING SHEARING DEVICE FOR HOT ROLLING EQUIPMENT

PURPOSE:To obtain sheared forms of the front end and the rear end preferable in easiness of roll biting and tail out characteristic by one shearing device by radially ejecting and retracting knives incorporated in upper and lower drums for shearing the front end and rear end of a steel strip. CONSTITUTION:A running shearing device has upper and lower drums 1, 1a, and a front end shearing knife 2 and a rear end shearing knife 3 are respectively attached to the drums 1, 1a. The end shearing knives 2, 3 are fixed to a knife holder 4 which is axially movably attached to a wedge 5 by a spigot. When a worm 14 and a worm wheel 13 are rotated, a bearing case 11 is axially moved. This movement is transmitted to a thrust bearing 10, thus moving a rotating shaft 6. That is, when the rotating shaft 6 is moved to a direction of (a), the edge shearing knife 2 is lowered and the rear end shearing knife 3 is lifted. When the rotating shaft 6 is moved to a direction (b), a reverse operation is performed.