CRH2动车组轴箱弹簧疲劳试验方案研究

Research on the Fatigue Test Project of Axle Box Springs Used for CRH2 Multiple Units

在现有机车车辆圆柱螺旋弹簧试验标准的基础上，针对CRH2动车组轴箱弹簧的特点，利用疲劳理论确定了该弹簧的疲劳试验方案，即在弹簧表面质量完好的情况下，疲劳试验次数达到300万次后，弹簧未发生断裂，可判定其合格。研究表明，该方案可以作为CRH2动车组轴箱弹簧进行产品质量检验的疲劳试验依据。

Based on existed fatigue test specification of the cylindrical screw springs and the features of axle box Springs used for CRH2 Multiple Units,the fatigue test project is present by using the fatigue theory.In the complete quality of the spring surface and after the number of fatigue test reaches to 300 million,the springs can be judged when they are not broken.The research indicates that the plan can be used for inspecting product quality of axle box springs based on the fatigue test project.