Reliable positioning structure and method for crystallizer narrow face copper plates

Abstract

The invention discloses a reliable positioning structure for crystallizer narrow face copper plates. The reliable positioning structure comprises width adjusting hydraulic cylinders. Piston rods of the width adjusting hydraulic cylinders are connected with the crystallizer narrow face copper plates. Locking mechanisms are arranged on the width adjusting hydraulic cylinders. The locking mechanismsare connected to the piston rods of the width adjusting hydraulic cylinders in a sleeving mode. Cavities are formed in the locking mechanisms and further located in one sides of the piston rods. Locking sleeves, pressing sleeves, locker pistons and disc springs are arranged in the cavities. The pressing sleeves and the locking sleeves are in sliding connection through wedge-shaped surfaces. The locking sleeves abut against the piston rods of the width adjusting hydraulic cylinders. The two ends of the pressing sleeves abut against the disc springs and the locker pistons separately. Exhaust outlets are formed in the sides, where the disc springs are located, of the cavities. Gas inlets are formed in the sides, where the locker pistons are located, of the cavities. The gas inlets are connected with high-pressure gas control valves. The reliable positioning structure for the crystallizer narrow face copper plates has the beneficial effects that the defect that hydraulic width modulation does not have a mechanical locking function in the prior art is overcome, and thus the phenomenon of 'cone angle changing' for the reasons of hydraulic pipeline leakage, hydraulic valve group faults, hydraulic cylinder leakage and the like is avoided.

Description

technical field [0001] The invention relates to the technical field of continuous casting crystallizer width adjustment, in particular to a reliable positioning structure and method for a narrow-side copper plate of a crystallizer. Background technique [0002] In order to meet the requirements of the hot rolling process for different slab widths, the continuous casting crystallizer is equipped with a narrow-side width-adjusting device. At the same time, in order to reduce the cold-state width adjustment time of online shutdown and improve the operation rate of the continuous casting machine, it is generally adopted to adjust the slab width during the pouring process (ie, online hot-state width adjustment). [0003] There are generally two types of crystallizer width adjustment transmission methods: mechanical mechanism (trapezoidal screw nut, planetary ball screw, combination of worm gear and ball screw, etc.) and hydraulic cylinder, and the driving components include servo...

AI Technical Summary

Problems solved by technology

The combination of worm gear and ball screw has self-locking function, but the mechanism is complicated

[0006] Hydraulic cylinder width adjustment: The magnetic scale mechanism is linearly driven, and the positioning is accurate, but there is no locking function. During the production process, due to the performance degradation of the hydraulic proportional valve or the problem of the control circuit, the position of the narrow copper plate is prone to change (commonly known as "running cone")

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