Fault Diagnosis System Of Pump Machinery Based On Industrial Controller

Concrete pumping machine is a kind of construction machinery electro-hydraulicintegration, is one of the largest construction machinery varieties. Pumping machine ismainly includes concrete pump and trailer pump, used for carrying concrete material thatfoundation construction required. It makes machines working long day and night in poorworking environment. Furthermore, it is difficult to obtain the parameters of machine,fault happen with multiple, uncertainty and concealment. At present, the maintenance ismainly relied on after-sale service, and then the demands of personal skills and quickreaction are relatively high. In addition, the working environment for machine is bad andshutdown cost is high, therefore, it is necessary to find a simple and effective method todo some real-time fault diagnosis, guiding maintenance person find out fault accuratelyand efficiently.This paper introduces a highly intelligent fault diagnosis system, which consists ofcontroller, screen, sensor, solenoid valves and other electrical components. The controlleras the main body, software integrate logic and fault tree analysis, use static diagnosis,dynamic diagnosis carrying out electrical-hydraulic fault diagnosis for pumping machine,finally through the man-machine interface gives diagnosis results and fault processingmethod, moreover, PDA and other external expansion also can do this. With that,serviceman can deal with failure quickly; the automation degree is also enhancedmeanwhile. Through the experimental test results, the system has achieved good effect,and can be widely popularized and applied.The development of diagnosis system is modular, these modules has stronguniversality and expansibility, can be constantly improved and supplied in the future.Moreover the mode and structure of the fault diagnosis system can be transplanted toother engineering machinery products, has a good applicability and developmentprospect.