Analysis Of Brake Failure Of Railway Freight Car And Research On Preventive Measures

The safety of vehicle operation has always been the focus of attention.The brake system is the key core of freight wagon and an important factor affecting the safety of the train operation.However,due to the complex mechanical structure of the air brake,the fundamental brake device and the manual parking brake,coupled with the harsh operating environment,the fault frequency of brake system stays still higher.Therefore,the scientific,reliability and safety of the brake system to carry out a comprehensive test,evaluation,as well as the development of feasible prevention,control,maintenance and other technical means,has become the current research hotspot of railway freight vehicles.This paper focuses on the cause analysis and measure study of the failure of the braking system of railway freight cars.By analyzing the failure data of vehicles,the inclined and frequent braking failures are screened out,and the prevention and control measures are proposed according to the principle of failure occurrence.To a certain extent,the problem of brake system failure affecting transportation organization and production efficiency is solved.This paper mainly completed the following research work:(1)The structure and working principle of type 120 main valve,automatic adjustment device for empty load car,derailment brake device,automatic adjustment device for brake shoe clearance and manual brake are deeply analyzed.(2)Taking the faults occurred in the operation of general freight cars of China Railway as an example,the fault data of vehicle braking system were systematically analyzed,the occurrence tendency and proportion of various faults were obtained,and common and typical braking faults were screened out for research.(3)Conduct classification research on the selected faults,analyze the component structure and working principle from the fault characterization and classification,find the cause of the fault,and form the problem solving ideas.(4)Combined with the actual situation of maintenance and inspection work,from the aspects of fault discovery,operating standards,safety management,etc.,to form a set of itemized and practical brake fault prevention and control plan,improve the on-site fault discovery and maintenance ability,and ensure the safety of train operation.