Slab length measurement device and measurement method thereof

Abstract

The invention relates to the technical field of metallurgy, in particular to a slab length measurement device, which comprises a first ranging unit, a second ranging unit, a third ranging unit, a fourth ranging unit, a control unit and an upper computer for providing slab length specification parameters. The first ranging unit, the second ranging unit, the third ranging unit and the fourth ranging unit are respectively connected with the control unit. The first ranging unit and the third ranging unit are respectively aligned with the front end of a slab. The second ranging unit and the fourth ranging unit are respectively aligned with the rear end of the slab. The control unit is connected with the upper computer. The invention also provides a measurement method for the slab length measurement device, which works out the length of the slab according to the distance and angle relation between the ranging units and the slab. The slab length obtained by the slab length measurement device and the measurement method thereof can reduce errors in slab length measurement caused by the leftward and rightward inclination of the slab, so that the measured slab length value can be more approximated to a true value.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a blank length measuring device and a measuring method thereof. Background technique [0002] At present, the hot rolling of metallurgical enterprises at home and abroad usually adopts a walking beam heating furnace with double rows of long and short billets fed into the furnace for heating, and the billets used are steelmaking continuous casting slabs. For the safe operation of the heating furnace and to prevent unqualified blanks from being loaded into the heating furnace, it is necessary to measure the length of the blanks before they are put into the furnace. The existing billet length measuring device, one is to detect the range of the billet with photoelectric switches installed at different intervals on both sides of the conveying roller table, and judge the approximate length of the billet. This method requires multiple groups of photoelectric switches when the billet ...

AI Technical Summary

Problems solved by technology

The existing billet length measuring device, one is to detect the range of the billet with photoelectric switches installed at different intervals on both sides of the conveying roller table, and judge the approximate length of the billet. This method requires multiple groups of photoelectric switches when the billet specification is complex. , the measurement accuracy is poor, and the cost is relatively high

The other is to use two displacement sensors to align with the front and rear ends of the blank, and calculate the length of the blank through the distance and angle relationship between the displacement sensor and the blank. This method of length measurement has disadvantages: when the blank is on the conveyor roller table When tilting, the calculated billet length is inaccurate. When the billet with extremely small width deviates to the side of the conveying roller table as a whole and deviates from the measurement area of ​​the displacement sensor, the billet length cannot be measured

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