The Optimized Design And Performance Analysis Of Bogie Of The New Railway Crane

Along with running speed of railway passenger car and freight car of our country further improving and increasing the freight axle load, as well as expanding rescue radius, the railway rescue crane rescuing capacity and running speed are put forward higher requirements. At present, the railway crane of railway rescue departments cannot meet the current needs of development of railway modernization, because of its structure, operation ability and speed limit in China. In order to meet the needs of the current railway transportation development and the accident rescue, according to relevant technical conditions and design requirements, it puts forward the design scheme of the new railway crane bogie, and analyzes or demonstrates it.This paper puts forward three kinds of the new railway crane bogie, according to TB/T1335-1996strength design and test evaluation specification for railway vehicle and GB/T3811-2008crane design specification to analyze strength, stiffness and modal of the bogie frame, and to check bridge ability of the three crane schemes, through comparative analysis the advantages and disadvantages of each structure, it determines the more optimized, more excellent performance structure of the new crane bogie design scheme and the main technical parameters.It uses finite element analysis software ANSYS to create the finite element of bogie frame, and carries on substructure analysis and modal analysis, and obtains the corresponding result files. In the dynamic analysis software FEMBS of SIMPACK importing previous finite element analysis result files, it generates the standard input file of containing all the data of the flexible frame, finally it reads the standard input file in SIMPACK, and creates the coupled dynamic model of flexible frame of the new crane bogie.Under the same conditions, it calculates the dynamic performance indexes of the multi rigid body model and the coupled model of the railway crane, and analyzes the effect of the flexible frame to the railway crane system dynamics comparing with the multi rigid body model. The analysis results show that the critical speed of the crane model of considering flexible frame is lower than the multiple rigid body dynamic model, and the stability indexes and acceleration amplitude all meet the design requirements, and the value increase along with running speed under the stability analysis, and the crane passes the curves, the maximum wheel axles force value, the derailment coefficient value, the wheel axles weight ratio of load value and the overturning coefficient value of two kinds of models reduce along with increasing the curve radius, the wheel axles weight ratio of load value and the overturning coefficient value of the coupled model are more smaller than the multi rigid body model due to the elastic deformation of flexible frame itself.In this paper, the research results will provide certain theory for the development of the new railway crane.