| High speed line of the railway engineering machinery system inland and abroad generally used the hydraulic pressure technology,it is because of the compact structure,fast response,large capacity,flexible installation,big output power,easy control,and many other advantages.As the wide use of hydraulic system in railway machinery,hydraulic systems also need to cause attaches great importance to the kinds of fault,the hydraulic system of the relevant statistics show that mechanical equipment failure happened above the blackboard writing are related to the hydraulic system.The operating condition of the hydraulic system directly influences the operation of the unloading equipment.It is very important to analyze and summarize the fault of mechanical hydraulic system.Hydraulic system failure due to system in general,accessories and performance of working fluid instability and improper use or improper maintenance and other reasons,because the hydraulic system is in the closed circuit work,so the fault is not intuitive,failure is not easy and it is not easy to check,make the diagnosis difficult.Therefore,the fault diagnosis of hydraulic system is also a hot subject.The faults of hydraulic system common due to the yuan,auxiliary system and the working fluid performance instability and causes such as misuse or improper maintenance,due to the hydraulic system is working within the closed oil circuit,so the fault is not intuitive,not easy also not convenient to check after failure,cause diagnosis difficult.The fault diagnosis of hydraulic system is also a hot subject.This paper analyzes the problems in the hydraulic system of railway machinery: 1.The problem of walking and disconnecting of the hydraulic high speed walking system;Walking system anti-drag problem;The problem of running fault in the hydraulic walking system.In addition,the paper puts forward some Suggestions on how to deal with and prevent failure. |
