Patent ID: 6167738
Filing Date: 2001-01-02
Classification: B21B

Abstract:
A method for replacing rollers of rolling mills of different sizes, the rollers having lift trunnions mounted on a roller stand in a rolling mill by a roller mounting comprising a plurality of mounting pieces on both ends of the rollers, said mounting pieces connected to each other by connecting elements, the method comprising: (a) removing the roller mounting and the rollers from the roller stand of the roller mill using a conveyor means; (b) passing the roller mounting and the rollers in a rolling line to an apparatus for replacing the rollers arranged exteriorly of the rolling line; (c) removing the roller mounting in an upright position and subsequently swinging the roller mounting into a horizontal position; (d) subsequently removing the mounting pieces of the roller mounting from the lift trunnions on both ends of the rollers while the rollers are in the horizontal position and bringing the mounting pieces into a park position; (e) thereafter replacing the rollers in pairs with new rollers having lift trunnions; (f) moving the mounting pieces of the roller mounting onto the lift trunnions of the new rollers to form a completed roller mounting and roller assembly; (g) swinging the completed roller mounting and roller assembly back to the original upright position and returning the assembly to the roller stand of the rolling mill by the conveyor means.