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Firstly, the situation of foreign coal truck with a brief introduction , a review of the course of development of the domestic coal gondola car , and discussed the necessity and significance of the study a new generation of 70t grade coal gondola . With China's railway development by leaps and bounds since the implementation of the rail freight capacity has been greatly improved , but still can not meet the growing demand for cargo transport . To meet the requirements of the Ministry of Railways and technology policy , improve Shenhua Group coal transport capacity of the existing lines to have their research and development of a new generation of axle load 23t , 70t -level load special coal gondola car . Research by the Shenhua Group , the existing lines , bridges, stations , loading and unloading equipment, etc. , starting from the user's actual needs and existing conditions , starting from the selection of key performance parameters and structure through the use of new materials , new processes, new technology , the vehicle structure has been optimized to solve the the dumper match and both vehicles use the inertial mass , and to determine the design of the car . Design programs to achieve not only to reduce vehicle weight , improve the load capacity of the vehicle purpose , while improving the efficiency of its the Dynamics Performance and dumping , with significant economic and social benefits . Papers finite element numerical analysis of the program , including strength , stiffness analysis . Through these analyzes , the improved design . To improve the reliability of the car , based on the Miner linear cumulative damage theory and AAR standards , the factory developed fatigue life prediction platform , the car , the fatigue life prediction . Analytical calculation and assessment results provide a theoretical basis for structural optimization and design finalized . Finally , the paper details the bodywork static strength, stiffness test and vehicle dynamics tests , test methods , test procedures and test results of the the dumper match test further improve vehicle performance and operational reliability of the vehicle design more scientific and reasonable , it should be said that the necessary research work has made ??an important contribution to the development of C70A coal gondola car .
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