Design Of Control System For KFJ-3A Type Dumper In Panzhihua Iron And Steel Company

The KFJ-3A tipper of Pangang is mainly responsible for the work of turning over the coal after all trains coming to the Panzhihua Iron and steel company.It is the key equipment for production control and management of Pangang.The original control system of the dumper adopts three operating stations(heavy car and heavy bull trolley console,turning machine console and empty car moving console)to control each molecular system manually.The control precision is low,the coordination control is difficult,the equipment failure rate is very high,and the maintenance and maintenance is inconvenient,which seriously restricts the stability of the production of Panzhihua steel.Let's make it.By analyzing the equipment structure,process principle,control principle and current situation of the control system,this paper starts with the overall structure composition,function setting,electrical chain transformation,PLC control equipment and the type selection of the inverter driver,and completes the design of the PLC and WinCC man-machine intelligent control as the core.The central control room of the tipper is built to realize centralized control of heavy equipment such as heavy cattle cart,dumper,empty cattle traction,hydraulic valve station and so on.During the transformation and commissioning,the control system showed strong control advantages in post operation and equipment energy consumption,and achieved good results.However,the system still has some defects,and its improvement has been completed.It includes the debugging and improvement of the PLC control program,the optimization and improvement of the relocking signal of the heavy cattle,the optimization and improvement of the heavy bull and the heavy car interlocking mutual control device,the optimization and improvement of the heavy and heavy car interlocking interlocking devices,as well as the optimization and improvement of the air cow and the empty car skin interlocking device.During the operation of the control system,the structure of the control system is more complex,the factors that cause the fault are many,the time of the fault treatment is long,the influence of the whole production chain of Panzhihua Iron and steel company is great,and the FreeFta fault tree drawing and analysis software is used to analyze the fault of the control system of the car dumper and quickly realize the turning of the car.The analysis and diagnosis of the fault of the machine control system.Through the design and Realization of the control system of the KFJ-3A type dumper in Panzhihua Iron and steel company,the equipment level of the control system is brought to a new step,the failure rate of the equipment is reduced,the production status is improved and the production efficiency is improved.At the same time,the control technology has a good reference value for upgrading and upgrading all kinds of car dumper control systems in the same industry.