NOUFERROUS METALLURGICAL EQUIPMENT

In response to the practical need for unmanned upgrading and renovation of the bottom filter of a blast furnace in a certain ironmaking plant, this paper designs and develops an intelligent unmanned overhead crane control system, which has achieved unmanned operation under the full operation process of slag grabbing and transportation for the first time in the ironmaking plant. The system mainly includes the overhead crane electrical control system, overhead crane positioning system, ground equipment control system, overhead crane monitoring system, etc. A novel collaborative scheduling safety control strategy based on dual vehicle linkage is proposed. Based on threading technology, the overhead crane is controlled to reasonably execute scheduling tasks such as waiting, avoiding, or moving, achieving safe and stable collaborative scheduling of two overhead cranes across the same span for the first time. The practical application results show that the automation and informatization level of the unmanned grab bucket crane for the bottom filter of the blast furnace in the renovated ironmaking plant is high. Key indicators such as the stability, synchronization, operation efficiency, and full bucket rate of the grab bucket are better than manual operation. The operation efficiency is increased by about 20%, the energy consumption is reduced by about 10%, and the labor intensity is reduced by about 70%.