东风型内燃机车的ZQDR—204型牵引电动机通过科研、制造和运用部门十几年的努力,使得运用初期的一些惯性故障,如主极绕组、换向极绕组的接地断线和换向器升高片开焊甩锡等基本上得到了控制。但是,电枢故障,如电枢接地、匝间短路和后支架断裂等,不但没有减少,而且逐年增多。由于牵引电动机电枢故障如匝间短路等会使机车产生机破事故,致使机车不能正常运行,经济损失大,修 Dongfeng diesel locomotive ZQDR-204-type traction motor through scientific research, manufacturing and the use of more than 10 years of departments, making the initial use of some inertia failures, such as the main winding, reversing pole winding grounding and commutator lift High piece of welding rejection tin basically got control. However, armature faults, such as armature grounding, turn-to-turn shorts, and breakage of rear brackets, have not diminished but increased year by year. Due to the traction motor armature failure such as inter-turn short circuit will lead to locomotive machine broken accident, resulting in locomotive can not be normal operation, economic loss, repair