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齿轮箱在高速动车组的牵引系统中扮演着重要角色是传动作用,齿轮箱在运行时由于要承受很大的线路激扰冲击力,所以箱体会出现疲劳裂纹。通过对市场上某种型号齿轮箱体进行研究,分析疲劳断口的情况和疲劳裂纹齿轮箱的运营里程,根本原因出在齿轮箱体内部拐角处,由于齿轮箱体本身的缺陷导致此处应力过于集中造成齿轮箱体出现疲劳裂纹。本篇文章主要分析了疲劳裂纹产生原因以及疲劳破坏造成的影响。
Gearboxes play an important role in the traction system of high-speed EMUs. The gearboxes are driven by shock waves. As a result, gearboxes experience fatigue cracks when they are subjected to large-scale circuit disturbances. Through the research on a certain type of gear box on the market, the analysis of fatigue fracture and fatigue cracked gear box operating mileage, the root cause of the gear box inside the corner, due to the gearbox itself defects lead to stress here too Focus on the gear box fatigue cracks. This article mainly analyzes the causes of fatigue cracks and the effects of fatigue failure.