Device with adjustable offset distance in serpentine rolling for rolling mill and using method thereof

Abstract

A device for a rolling mill with an adjustable offset distance in serpentine rolling and a method thereof are provided. The device includes a frame, offset moving components, upper and lower work rolls, telescopic components, lifting components, and a monitoring component. The offset moving components are connected to a middle of the frame, and the offset moving components are connected to the lower work roll bearing seats, and the lower work roll bearing seats are connected to the lower work roll; the offset moving components are fixedly connected to the telescopic components; a top of the frame is fixedly connected to the lifting components, and the lifting components are fixedly connected to upper work roll bearing seats, and the upper work roll bearing seats are connected to the upper work roll, and the monitoring component is provided at a rolling exit of the frame.

What is claimed is: 
     
         1 . A device with an adjustable offset distance in serpentine rolling for a rolling mill, the device comprising: a frame, offset moving components, an upper work roll, a lower work roll, telescopic components, lifting components, and a monitoring component; wherein the offset moving components are connected to two sides of lower work roll bearing seats at a middle of the frame, the lower work roll is arranged between the lower work roll bearing seats, the offset moving components are fixedly connected to the telescopic components, a top of the frame is fixedly connected to the lifting components, the lifting components are fixedly connected to upper work roll bearing seats, the upper work roll is arranged between the upper work roll bearing seats, and the monitoring component is provided at a rolling exit of the frame. 
     
     
         2 . The device with the adjustable offset distance in serpentine rolling for the rolling mill according to  claim 1 , wherein the offset moving components comprise two first dovetail-shaped wedge blocks and two second dovetail-shaped wedge blocks, the two first dovetail-shaped wedge blocks and the two second dovetail-shaped wedge blocks are respectively embedded in dovetail-shaped wedge slots in the middle of the frame, one of the two first dovetail-shaped wedge blocks and one of the two second dovetail-shaped wedge blocks are respectively arranged at two sides of one of the lower work roll bearing seats, another of the two first dovetail-shaped wedge blocks and another of the two second dovetail-shaped wedge blocks are respectively arranged at two sides of another of the lower work roll bearing seats, and vertical side surfaces of the two first dovetail-shaped wedge blocks and the two second dovetail-shaped wedge blocks respectively abut against and are parallel to side surfaces of the lower work roll bearing seats. 
     
     
         3 . The device with the adjustable offset distance in serpentine rolling for the rolling mill according to  claim 1 , wherein the telescopic components comprise two telescopic hydraulic cylinders, brackets are fixedly connected to an outer side of the frame, bases of the two telescopic hydraulic cylinders are fixedly connected to pulleys, the pulleys are nested in pulley grooves of the brackets, and the two telescopic hydraulic cylinders are arranged on and perpendicular to the outer side of the frame. 
     
     
         4 . The device with the adjustable offset distance in serpentine rolling for the rolling mill according to  claim 1 , wherein the lifting components comprise two lifting hydraulic cylinders, and the two lifting hydraulic cylinders are fixedly connected to the top of the frame. 
     
     
         5 . The device with the adjustable offset distance in serpentine rolling for the rolling mill according to  claim 1 , wherein the monitoring component comprises a plate camber measuring instrument, and the plate camber measuring instrument is vertically arranged at the rolling exit. 
     
     
         6 . A method of the device with the adjustable offset distance in serpentine rolling for the rolling mill according to  claim 2 , comprising following steps:
 step  1 : synchronously driving the one of the two first dovetail-shaped wedge blocks and the one of the two second dovetail-shaped wedge blocks to move outwards away from or inwards towards the frame through telescopic force of telescopic hydraulic cylinders, so as to drive the lower work roll to move along a rolling direction; forming a predetermined offset displacement between the lower work roll and the upper work roll; forming displacement self-locking between the two first dovetail-shaped wedge blocks and the two second dovetail-shaped wedge blocks and the respective dovetail-shaped wedge slots of the frame, and adjusting the predetermined offset displacement by gradually controlling a telescopic distance of the telescopic hydraulic cylinders; and   step  2 : equipping a plate camber measuring instrument at the rolling exit to monitor a camber of a plate in real-time, feeding back plate camber data to a server, and adjusting and correcting the predetermined offset displacement through the server by adjusting the telescopic hydraulic cylinders.