运用货车的技术状态之好坏,将直接影响铁路运输的安全和效益,也综合反映出铁路车辆在设计制造和检修运用中存在的一些问题。因此,经常对运用货车的技术状态进行调查分析是很必要的。它一方面为设计、制造和定检单位改进结构设计、改善检修工艺和提高定检车质量提供可行性技术资料;另一方面为列检等运用单位开展标准化 The technical status of the use of trucks will have a direct impact on the safety and effectiveness of railway transport, as well as some problems existing in the design, manufacture and overhaul of railway vehicles. Therefore, it is often necessary to conduct a survey and analysis of the technical status of the use of trucks. On the one hand, it provides feasible technical data for the design, manufacture and inspection units to improve the structural design, improve the overhaul process and improve the quality of the fixed inspection vehicles; on the other hand,