Rapid arc connecting method of slab caster crystallizer narrow face foot rollers

Abstract

The invention relates to a rapid arc connecting method of slab caster crystallizer narrow face foot rollers. The method comprises the following steps: 1) firstly fixing the two sides of each foot roller on foot roller supports through L-type clamping plates, then additionally arranging 10 sets of disc spring pieces on the rear portions of the foot roller supports to be flexibly connected with foot roller billets so as to prevent casting blank bulging caused by molten steel static pressure, and finally installing the assembled foot roller device in U-type grooves in the two sides of the lower end of each Z-type supporting plate; 2) achieving foot roller arc connecting operation on copper plates by adjusting two adjusting bolts behind the foot roller supports, and locking the foot rollers through double preparation caps of studs; 3) completing one-time arc connecting through the adjustment of a speed reduction machine-a lead screw mechanism. Compared with the prior art, the method has the advantages of being small in investment, simple, scientific and practical, reducing the fault time of the device, improving the arc connecting precision of the process, reducing the labor intensity of a worker, improving the working efficiency, and creating higher economic benefits for an enterprise.

Description

technical field [0001] The invention relates to the technical field of metallurgical machinery, in particular to a method for fast arc-connection of narrow-face foot rolls of crystallizers of slab continuous casting machines. Background technique [0002] The Dalian casting machine has been in use for nearly 20 years. The side guide roller system of the overall section is composed of: hydraulic motor-worm gear reducer-screw screw nut mechanism-narrow surface guide roller. Due to the high temperature and humidity of the working environment, the production Mold slag is eroded. When adjusting the narrow roller, it is often impossible to complete the width adjustment action within the specified time of the production interval due to the grinding of the screw nut of the screw mechanism, the failure of the reducer, and various mechanical and hydraulic failures. The production was interrupted, and it was forced to stop for emergency repair. It took at least four hours to replace th...

AI Technical Summary

Problems solved by technology

[0002] The Dalian casting machine has been in use for nearly 20 years. The side guide roller system of the overall section is composed of: hydraulic motor-worm gear reducer-screw screw nut mechanism-narrow surface guide roller. Due to the high temperature and humidity of the working environment, the production Mold slag is eroded. When adjusting the narrow surface roller, it is often impossible to complete the width adjustment action within the specified time between production intervals due to the grinding of the screw nut of the screw mechanism, the failure of the reducer, and various mechanical and hydraulic failures.

The production was interrupted, and it was forced to stop for emergency repair. It took at least four hours to replace the whole section each time, which had a serious impact on the existing production rhythm. According to statistics, from the beginning of 2008 to August 2012, the narrow roller could not be adjusted. And the inability to process online resulted in the forced replacement of the whole section for a total of 33 times; in order to prevent breakout and bulging of the side of the slab, the number of foot rollers is as many as 12, and the transmission form is: hydraulic control system- Hydraulic motor-worm gear reducer-screw screw nut-narrow surface foot roller mechanism, its structure is complex, the transmission chain is complex, the working conditions are harsh, and the failure rate is extremely high, which once affected production

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