Method for replacing roller box of nine-roller hot straightening machine

Abstract

The invention provides a method for replacing a roller box of a nine-roller hot straightening machine, and belongs to the technical field of hot-rolled steel plate straightening machines. The method comprises the steps of S1, before an upper old roller box and a lower old roller box are drawn out, fixing a working roller shaft head transmission gear sleeve, and measuring the elevation difference between two corresponding sets of working rollers in the upper old roller box and the lower old roller box; S2, after the old roller boxes are drawn out, copying the rotating angles of outer teeth of all working roller shaft heads in the old roller boxes, adjusting the rotating angles of outer teeth of all working roller shaft heads in a new roller box, and enabling the rotating angles of the outer teeth of the working roller shaft heads in the new roller box and the rotating angles of the outer teeth of the working roller shaft heads in the old roller boxes to be in one-to-one correspondence and consistent; S3, before the new roller box is placed on a line, placing a cushion block with the elevation difference measured in the step S1 in a space between the upper roller box and the lower roller box, and enabling the corresponding elevation difference between the upper set of working rollers and the lower set of working rollers of the new roller box to be the same as the elevation difference between the upper set of working rollers and the lower set of working rollers of the old roller boxes; and S4, pushing the adjusted new roller box into a station. According to the method for replacing the roller box of the nine-roller hot straightening machine, the replacement time of the roller box can be shortened, and the production operation rate of a production line is improved.

Description

technical field [0001] The invention relates to the technical field of a hot-rolled steel plate straightening machine, in particular to a method for replacing a roll box of a nine-roll hot straightening machine. Background technique [0002] At present, the nine-roll hot straightening machine needs to replace the roll box after one cycle of use. A roll cassette replacement consists of disconnecting the drive shaft, pulling out the old roll cassette, pushing in the new roll cassette and linking the drive shaft. Replacing the roll cassette must be done while the production line is stopped. It takes 8 hours to replace the roller cassette, but it takes 4 hours to disconnect and connect the transmission shaft. Whether we can find a way to quickly connect the transmission shaft becomes a problem that we use the TRI Z theory we have learned. to find a solution to the problem. [0003] a). After the old roll box is pulled out, because the vertical elevation of the work roll shaft...

AI Technical Summary

Problems solved by technology

It takes 8 hours to replace the roller cassette, but it takes 4 hours to disconnect and connect the transmission shaft. Whether we can find a way to quickly connect the transmission shaft becomes a problem that we use the TRI Z theory we have learned. to find a solution to the problem

[0003] a). After the old roll box is pulled out, because the vertical elevation of the work roll shaft head of the newly pushed roll box is different from that of the old roll, it cannot enter the cardan shaft sleeve;

[0004] b). The rotation angles of the work rolls of the new and old roll cassettes are different, resulting in the inability of the inner teeth of the inner ring gear of the transmission shaft gear sleeve to mesh with the outer teeth of the work rolls;

Images