A continuous casting tension leveler system and load distribution method

Abstract

The invention discloses the technical field of continuous-casting equipment, and provides a continuous-casting withdrawal and straightening unit system and a load distributing method. The method comprises the steps that the same motor rotating speed set value is set for all driving motors; a load distributing coefficient is set for each driving motor; withdrawal and straightening unit driving roller components needing to participate in load distribution are determined; actual output throwing force of driving rollers participating in load distribution is calculated; the total throwing resultant force is calculated; the throwing force set value of each driving motor participating in load distribution is calculated; a controller outputs the rotating speed compensation dosage; the sum of the rotating speed compensation dosage and the motor rotating speed set value is used as the input ends of the driving motors for rotating speed control, and the actual output throwing force of the driving rollers is used as feedback values to achieve closed-loop control. The load distributing coefficients are introduced to achieve free distribution of withdrawal and straightening unit total loads in withdrawal and straightening units, automatic control over the throwing force is achieved through closed-loop adjustment, and meanwhile according to the method, the pull speed changes can not be caused, and the production technology is not affected.

Description

technical field [0001] The invention belongs to the technical field of continuous casting equipment, and in particular relates to a continuous casting straightening machine system and a load distribution method. Background technique [0002] Straightening machine is a continuous casting equipment that continuously pulls out and straightens the billet. The billet continuous casting machine usually adopts a five-roller drawing and leveling machine, the bloom continuous casting machine is composed of 3 to 5 pairs of rollers, and the slab continuous casting machine adopts a multi-roller drawing and leveling machine. The tension and straightening machines of modern continuous casting machines all adopt AC frequency conversion speed regulation. In the production process, due to various errors in the drive system, the load distribution of each drive motor is irregular and uneven, causing some motors to work at full load or even overload for a long time, which is likely to cause ov...

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Problems solved by technology

[0003] In view of the above problems, the object of the present invention is to provide a continuous casting straightening machine system and a load distribution method, aiming to solve the problem that in the existing continuous casting straightening machine system, due to the irregular load distribution of the driving motors, some driving motors are in the long-term Overloaded working state, technical problems that are likely to cause accidents

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