Method for quickly changing upper supporting roll of hot continuous rolling mill

Abstract

The invention provides a method for quickly changing a supporting roll on a hot continuous rolling mill. The method comprises the following steps: pulling a working roll out of a mill body along a track; the quick-changing device is placed on a roller changing platform track; the quick-change device is pushed into the machine body; descending the upper supporting roller and putting the upper supporting roller on a quick-change device; the quick change device and the upper supporting roller are pulled out together; the upper supporting roller needing to be replaced is overhauled or lifted away; hoisting an upper supporting roller which needs to be put on a line on the quick-change device, and pushing the upper supporting roller and the quick-change device into the machine body; the upper supporting roller is lifted to the highest position, so that the upper supporting roller is separated from the quick change device; positioning locking of the quick-changing device is relieved, the quick-changing device is pulled out and lifted away from the roller changing platform, and connection of all parts of the upper supporting roller is recovered; and a working roller is installed, and production is recovered. According to the method for quickly replacing the upper supporting roll of the hot continuous rolling mill, the upper supporting roll system can be overhauled or the upper supporting roll can be replaced under the condition that the lower supporting roll system is not moved completely, the replacement steps are reduced, the time consumed for overhauling or replacing is shortened, the intensity of workers is reduced, and the safety guarantee is improved.

Description

technical field [0001] The invention relates to the technical field of rolling mills, in particular to a method for quick change of backup rolls on a hot tandem rolling mill. Background technique [0002] The upper and lower backup rolls in the hot tandem rolling mill equipment, under normal circumstances, need to replace the upper and lower backup rolls at the same time after the machine is used up. Then lift the cover plate of the roller changing area to expose the track of the roller changing area. Each oil pipe connected to the lower backup roller needs to be pulled out, and then the lower backup roller is pulled out by the roller changing trolley, and the support frame is hung on the lower backup roller. The backup roll is pushed into the rolling mill together with the support frame, and then the upper backup roll is placed on the support frame, so that the upper backup roll can be pulled out for troubleshooting or replacement of the upper backup roll. However, in spec...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a quick change method for the upper back-up roll of a hot continuous rolling mill, which solves the problem of the upper back-up roll being removed due to the need to remove the lower back-up roll for troubleshooting of the upper back-up roll system or replacement of the upper back-up roll. The problem of long time-consuming, high strength and low efficiency for roll maintenance or replacement

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