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1 前言DF4c型内燃机车使用的是ZQDR-410C型牵引电动机。随着列车提速和重载牵引,牵引电动机的落修率有所所上升。我段DF4c型机车共45台,1999年牵引电动机落修率已达1.5件/10万km,较1998年提高30％。严重影响机车的正常运用,影响了运输秩序。因此,我们对其进行了分析研究。2 故障原因2.1故障统计我段1999年4～11月份的牵引电动机落修情况
1 Introduction DF4c diesel locomotive using the ZQDR-410C traction motor. As the train speed and heavy traction, traction motor fell rate increased. I paragraph section DF4c locomotive a total of 45 units in 1999 traction motor fell to repair rate has reached 1.5 / 100,000 km, up 30% over 1998. Seriously affect the normal operation of the locomotive, affecting the transport order. Therefore, we conducted an analysis of it. 2 fault causes 2.1 fault statistics I segment 1999 4 ~ November traction motor drop situation