On-line installation method for bearing seat of coiling aid roll frame of hot-rolling coiler

Abstract

The invention discloses an on-line installation method for a frame bearing seat of a coiling-assisting roller of a hot-rolling coiler. In the method, a new bearing seat is first fabricated, and a technological positioning hole is processed at the center position of the original bearing seat of the arch on the operation side and the transmission side to be installed as the new bearing seat The positioning datum; remove the old bearing seat, install the manufacturing process dummy shaft into the process positioning hole, install the new bearing seat on the process dummy shaft and weld it to the operation side and transmission side arch; Weld the tooling bracket on the inner and outer sides of the side arch, insert the boring bar of the machining equipment into the tooling bracket and the process positioning hole and lock the position of the boring bar; use the machining equipment to process the inner hole of the new bearing seat to the design size, and ensure the new bearings on both sides. Concentricity of the seat, remove the machining equipment and tooling bracket after processing, re-measure the center size of the bearing seat, meet the design accuracy requirements, and complete the installation of the new bearing seat. The method meets the structural transformation requirements of the coiler, and ensures the positional accuracy of the helper roller.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to an on-line installation method for a frame bearing seat of a coil-assisting roller of a hot-rolling coiler. Background technique [0002] The coiler is one of the key core equipment of the hot rolling production line. Due to the deviation of the position accuracy of the helper roll, the hot rolling coiler will seriously affect the surface quality of the strip and the coil quality of the finished steel coil. The deviation of the position of the helper roll is mostly caused by the wear of the bearing hole. In order to eliminate the above defects and improve the surface quality of the strip and the coiling accuracy, the coiler was analyzed and demonstrated through preliminary feasibility analysis and based on the latest design concept of the hot rolling production line. Key points: The connection form between the roll-assisting roller frame and the coiler frame is transformed fro...

AI Technical Summary

Problems solved by technology

The position deviation of the auxiliary coiling roll is mostly caused by the wear of the bearing hole. In order to eliminate the above-mentioned defects, improve the surface quality of the strip steel and the coiling accuracy, the coiler Key points: The connection between the frame of the winding aid roll and the frame of the coiler is changed from a sliding bearing to a rolling bearing, which can effectively improve the position of the winding aid roll by changing the shortcomings of the sliding bearing such as large fit clearance, low precision, difficult lubrication and maintenance, and poor action sensitivity. precision

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