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ZQDR—410型牵引电动机是东风_4B型内燃机车的主传动电动机,从宏观看,其性能与质量满足了机车牵引的要求。但从铁道部株洲电力机车研究所数据库的统计及我厂召开的两届质量信息年会上的意见反馈表明,该电动机存在刷架圈松动、电刷弹簧断裂及主、辅极线圈引线端断裂等重大事故,严重威胁着机车安全可靠运行,增加了机车落修率。这些惯性故障均属于先天性的设计问题。从1988年8月起,我厂征得驻厂验收室的同意,进行了下列几项设计更改: 1.刷架圈固定方式的改进机车运行时,线路对机车的一切动力影响
ZQDR-410 traction motor is the main drive motor of DF4B diesel locomotive. From a macro perspective, its performance and quality meet the requirements of locomotive traction. However, the statistics from the Ministry of Railways Zhuzhou Electric Locomotive Research Institute database and our factory two opinions on the quality of information feedback at the annual meeting shows that there is brush the brush loosening of the motor, the brush spring fracture and the main and auxiliary coil lead end fracture And other major accidents, a serious threat to the safe and reliable operation of the locomotive, an increase of locomotive dropout rate. These inertia failures are all congenital design issues. Since August 1988, our factory has obtained the consent of the factory acceptance room and made the following several design changes: 1. Improvement of fixing mode of brush holder circle When locomotive running, all dynamic influences of the line on the locomotive