Design Of Electronic Control System For Blind Inclined Shaft Hoist Based On PLC

With the continuous development of the mining industry in China in recent years,most of the mining of shallow resources have gradually dried up or depleted,resource development gradually to deep underground development,especially some of the resources crisis mines,enterprises of deep deposit is extremely urgent demand for mineral resources,deep mining has become the most mine now the choice of the enterprise,and the mine hoist system is to control the throat of mine production.Mine hoist is an important equipment in mine production,and it plays a key role in the lifting of this personnel,ore and material.The traditional electric control system of mine hoist control system based on relay contactor,the hoist speed control scheme with rotor resistance,the resistance to the rotor string into different sizes to start,operation is required to speed,this scheme is cheap,but the systerm has complex control system,high energy consumption,the failure rate of defect high,maintenance is difficult,it is difficult to achieve the modernization of the mine production demand.This combination of Tongguan gold mining limited liability company eight kilometers mine 1272 mine inclined shaft hoisting machine design installation,PLC(programmable logic controller)and inverter applied to the mine hoist control system,using PLC instead of relay contactor control system in the past,a large number of lines is reduced.According to the actual situation and demand of underground mine hoisting machine production,design a reliable control system and the ladder diagram,reaching double redundant safety circuit,achieves 2 PLC,touch screen,electric control cabinet between control and communication,and use of frequency con,verter to the mine hoist operation more stable and reliable;the signal system,the design combined with the use of reality to stop two RBI rules under three of the mineral company of Tongguan gold mine underground,realize the implementation of centralized control signal dotting the wellhead,set the signal system of a PLC signal at the wellhead platform,and the main PLC communication,complete ascension.The field installation,debugging and operation show that the system is safe and reliable,the operation of the equipment is stable,the operation is simple and the manual strength is reduced.Compared with Tongguan golden Gold Mining Co.,Ltd.,the efficiency and energy consumption of the similar lifting equipment are obviously improved,which fully meet the actual production needs in the underground.