Method for replacing smoke hood of hot scarfing machine

Abstract

The invention provides a method for replacing a smoke hood of a hot scarfing machine. The method for replacing the smoke hood of the hot scarfing machine comprises the following steps of arranging a structural beam; arranging a sliding rail and multiple chain blocks; hoisting the lower part of the smoke hood to the position close to the second end of the sliding rail; connecting a lifting hook ofeach chain block to the lower part of the smoke hood; placing the lower part of the smoke hood into a smoke hood foundation pit by means of the chain blocks; hoisting the upper part of the smoke hoodto the position close to the second end of the sliding rail; connecting the lifting hook of each chain block to the upper part of the smoke hood; moving the upper part of the smoke hood frontwards until the upper part of the smoke hood is located over the smoke hood foundation pit; conducting butt joint between the upper part and the lower part of the smoke hood and conducting welding connection;connecting the lower part of the smoke hood with the smoke hood foundation pit through grouting. The method for replacing the smoke hood of the hot scarfing machine can greatly shorten the construction period, greatly save labor cost and machine-team expense of large-sized hoisting equipment under the condition of guaranteeing quality and safety, and the method for replacing the smoke hood of thehot scarfing machine has good economic benefits and social benefits.

Description

technical field [0001] The invention relates to the field of flame cleaning machine maintenance, in particular to a method for replacing a smoke hood of a flame cleaning machine. Background technique [0002] Slab flame cleaning refers to the heat removal process of treating the slab to remove surface defects or impurities before rolling or final treatment process, mainly to remove the iron oxide scale on the surface of the slab. In order to provide high surface quality slabs for the rolling process and improve the yield of rolled products, in recent years, major steel mills in my country have successively introduced flame cleaning equipment from abroad. The flame cleaning machine was first developed by the American L-TEC company. . The flame cleaning machine includes a smoke hood, and the finishing flame cleaning machine smoke cover is located inside the flame cleaning machine equipment workshop. The fume hood is shunted and discharged, and then the supporting equipment EP...

AI Technical Summary

Problems solved by technology

However, the flame cleaning machine has a high load of cleaning hot slabs and cold slabs every day, and the smoke hood of the flame cleaning machine is seriously worn out, and the smoke hood needs to be replaced.

In the prior art, the fume hood is lifted out by the automobile crane and the electric hoist in the closed type for replacement. However, when installing a new fume hood, there are no special tools and methods, the installation efficiency is low, the downtime is long, labor intensity and Heavy workload and potential safety hazards on site

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