Method for quickly replacing roller shitting oil cylinder of hot continuous rolling finishing mill

Abstract

The invention provides a method for quickly replacing a roller shitting oil cylinder of a hot continuous rolling finishing mill. The method is characterized by comprising the following steps of: horizontally pulling a shaft head of a main shaft to one side 130 millimeters by using a three-ton guide chain to ensure that the main shaft body swings horizontally; taking the roller shifting oil cylinder out of the space between the main shaft and a locking frame; cleaning the slide way of the roller shifting oil cylinder, and coating new lubricating oil on the slide way; moving the new roller shifting oil cylinder to the gap between the main shaft and a roller shifting slide frame and horizontally moving the new roller shifting oil cylinder to the direction of the slide frame 20 centimeters; and after the new roller shifting oil cylinder completely enters the slide way, fastening a bolt and arranging a copper slide plate. By the method, the roller shifting oil cylinder of an F4-6 finishing machine can be replaced, 4 to 5 hours is required in the whole maintenance and replacement process, a crown block is used for 60 minutes, the using time of the crown block is reduced, the overhauling time is saved, the unplanned outage time produced by the fault of roller shifting cylinder is reduced, maintenance and management are facilitated, the overhauling working amount is reduced, and the labor cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of overhauling and repairing roll shifting oil cylinders of hot continuous rolling mill equipment in the metallurgical industry. Background technique [0002] Roll bending and shifting devices are installed on the F4-6 finishing mill. Due to the narrow space between the rolling mill arch body and the main transmission shaft, it is inconvenient to operate when maintaining the roll shifting oil cylinder. And there are many faults in the roller shifting oil cylinder, and the replacement is frequent. The main transmission shaft must be dismantled for each overhaul and replacement of the roll shifting cylinder, and the replacement operation can only be carried out. After the replacement of the roll shifting cylinder, the main transmission shaft must be reassembled. The entire maintenance and replacement process takes more than 12 hours, and at the same time occupies the crane for more than 4 hours. Since the cra...

AI Technical Summary

Problems solved by technology

The entire maintenance and replacement process takes more than 12 hours, and at the same time occupies the crane for more than 4 hours. Since the crane space is fixed, it seriously affects the implementation of other maintenance items and the back-up roll replacement and roll back operations, making the maintenance downtime relatively long

In addition, since the main drive shaft is forced to be disassembled, some materials and spare parts will be wasted, and a large amount of labor costs will be increased accordingly.