高炉开铁口机大臂缓冲方法研究

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RESEARCHONTHEBUFFERINGMETHOD OFTHE LARGEARMOFTHEBLASTFURNACETAPPING MACHINE

Zhang ShouxiHe Zhuang

（Ironmaking Plant of Bensteel Plate Co.，Ltd.Benxi1170oo，China）

Abstract：The rotating mechanism of the large armof the blast furnace tapping machine is driven byahydraulic cylinder，with a force arm length of 5.6 m，a weight of 32 t，and a working rotation angle of 120∘ . Due to the large momentofinertiaanddasticchangesinexternalloads，therotationalspeedisoutofcontrol，esultinginsevereimpact anddamage to the bodyandblast furnaceshel.Byadinga mechanical limitdevice，the mechanical signal is converted intoanelectricalsignal throughaproximityswitchand thentransmitedtothecomputer.Itisthenadjustedbyaprogram andtransmitted totheproportional valve，reducing theopening ofthe proportional valveandreducing theflowrate to the rotating hydrauliccylinderof the ironopening machine.Ultimately，the speedof theopening machinearmrotation is sloweddown toachieve buffering.Notonlydoes itprotecttheequipment，butitalsosaves thecostof spare parts， ensuring the normal production of the blast furnace.

Key words： blast furnace; iron tapping machine; big arm buffer

0前言

高炉开铁口机是重要的炉前设备之一，高炉每次出铁时必须用其打开出铁口，其性能和效率直接影响到高炉的正常生产。（剩余3806字）