Method for disassembling closed breakdown mill roller

Abstract

The invention discloses a method for disassembling a closed breakdown mill roller. A lifting appliance adopted in the method structurally comprises a long-strip-shaped lifting appliance main body, the upper end of the lifting appliance main body is provided with a 90-degree bent steering bend, the lower end of the lifting appliance main body is provided with a connector, a roller end axle mounting hole is formed in the side face, in the same direction as the direction of the bend, of the connector, the bend is provided with a lifting hook wiring sleeve arranged upwards, and the lifting appliance is further provided with a roller auxiliary connecting mechanism and a horizontal lifting appliance body adjusting mechanism; during disassembling, the lifting hook wiring sleeve of the lifting appliance is hung on a lifting hook of a crane, and bypasses a case of a breakdown mill, so that the roller is mounted on the lifting appliance for disassembling and lifting. Therefore, the method can depend on the lifting appliance, and the crane is adopted to realize the disassembling of the closed breakdown mill roller, so that the disassembling time is greatly shortened, the labor efficiency is improved, and the safety is extremely high; moreover, the lifting appliance adopted in the method has the advantages of simple structure, convenience in implementation and the like.

Description

technical field [0001] The invention relates to a method for removing rolls of a closed billet rolling mill. [0002] Background technique [0003] The billet rolling mill is the equipment used in the first rolling process of section steel. It needs to form the general shape of the section steel, so the rolling force is relatively large, and the rolls used are very heavy rolls. [0004] The closed billet rolling mill refers to the billet rolling mill in which the upper surface of the shell is an integral top cover shape, and only openings are provided on the side of the shell. In the closed billet rolling mill, the weight of a single roll is close to 20 tons. At the same time, it cannot be lifted directly from above during maintenance and replacement, so it is impossible to use a crane to assist disassembly, which makes the disassembly and replacement of the roll very troublesome. Both will consume a lot of manpower and time. Contents of the invention [0005] Aiming at...

AI Technical Summary

Problems solved by technology

In the closed billet rolling mill, the weight of a single roll is close to 20 tons. At the same time, it cannot be lifted directly from above during maintenance and replacement, so it is impossible to use a crane to assist disassembly, which makes the disassembly and replacement of the roll very troublesome. will consume a lot of manpower and time

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