PC rolling mill crossing angle measuring method and system
A measurement system and measurement method technology, applied in the field of measurement, can solve problems such as real-time measurement of the cross angle of the rolls that cannot be solved, meet the requirements of on-site production and equipment management, have broad application prospects, and improve the control accuracy of plate crown and plate shape. Effect
Active Publication Date: 2020-10-09
BAOSHAN IRON & STEEL CO LTD
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Problems solved by technology
However, the central position of the measured mirror does not change in this technical solution, and only the angular deflection of a single measured object can be detected, which cannot solve the problem of real-time measurement of roll crossing angles in the production process of the PC rolling mill to be solved by the present invention
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[0088] exist Figure 4 , Figure 5 In, a specific embodiment of the technical solution of the present invention is given.
[0089]Wherein, the working part diameter of a pair of intersecting rolls 1 is 800mm, the distance of the mirror 2 surface at the end of the roll intersection point is 2400mm, and the distance from the projection screen 6 to the surface of the mirror 2 is 1 1 = l 2 =2000mm.
[0090] U in the picture i , U r In order to measure the spot position of the incident and reflected light of the laser sensor deflected by the upper roll on the screen 6, L i , L r In order to measure the position of the light spot projected on the screen 6 by the incident and reflected light of the laser sensor deflected by the lower roll.
[0091] Assuming that when the cross angle of adjusting roll 1 reaches 1.5°, the deflection angle of a single roll reaches the maximum, α max = β max =0.75°. Then according to the small-angle geometric relationship, we can get:
[0092]...
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The invention discloses a PC rolling mill crossing angle measuring method and system and belongs to the field of measuring. A plane round reflective mirror is fixed to the axis position of the end portion of the work side of each of a pair of measured rollers of a PC rolling mill. A measuring platform is arranged on the ground surface on the outer side of the end portions of the work sides of themeasured rollers. The measuring platform is provided with two parallel guide rails and a projection screen, a laser range sensor is arranged on each of the two parallel guide rails, and a CCD image sensor is arranged on the outer side of the projection screen. A computer processing system conducts calculation according to the distance between the projection screen on the measuring platform and a measuring point and position parameters of a light spot on the projection screen, and therefore the included angle between laser incidence and reflection rays can be accurately calculated, and the real-time crossing angle of the measured rollers is obtained. Under the condition that normal running of the rolling mill is not affected, real-time online tracking of the crossing angle of the rollers isachieved, the healthy condition of a crossing angle adjusting system is determined according to the variation trend of the difference value of the measured value and the set value, and the strip steel plate shape quality problem caused by the crossing angle setting deviation can be prevented.
Description
technical field [0001] The invention belongs to the field of measurement, in particular to a method and system for real-time detection of the intersection angle of a PC rolling mill. Background technique [0002] PC rolling mill (Pair crossed rolling mill, also known as roll paired cross rolling mill) through the upper and lower pairs of crossed rolls, the shape of the roll gap formed between the upper and lower work rolls is equivalent to the convexity of the work rolls on the convex surface. The purpose of controlling the shape of the board. The equivalent roll crown depends on the intersection coefficient and the intersection angle between the upper and lower work rolls. For the known rolling mill width and roll diameter, the purpose of controlling the crown can be achieved only by setting the intersection angle. [0003] The PC mill crossing angle setting model calculates the crossing angle and the strip crown and flatness according to the target crown value of the stri...
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IPC IPC(8): B21B38/00
CPCB21B38/00
Inventor 王泽济周永张健民
Owner BAOSHAN IRON & STEEL CO LTD