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ZQDR-410牵引电动机采用D374电刷。推荐的电刷压力为200～400g/cm~2。按图纸要求,刷握弹簧作用在每个新电刷上的压力P_b为4.5±0.5kg,这相当于电刷压力为320～400g/cm~2。刷握组装后的实际电刷压力,我厂均严格控制在图纸所要求的范围之内。但自1983年以来,在运用中陆续出现了一些与电刷压力有关的问题。如部分电机换向器表面过磨耗或偏磨。经我们修改电刷压力要求后,一年多来的实践表明,上述故障已基本消除。下面就一些有关的问题谈谈我们的看法。 1.虽然我们过去规定刷握组装后压力为
ZQDR-410 traction motor with D374 brush. Recommended brush pressure is 200 ~ 400g / cm ~ 2. According to the requirements of the drawing, the pressure P_b on each new brush by the brush holder spring is 4.5 ± 0.5 kg, which corresponds to a brush pressure of 320-400 g / cm 2. Brush grip assembly after the actual brush pressure, I plant are strictly controlled within the scope of the drawings required. However, since 1983, there have been some problems related to brush pressure in use. As part of the motor commutator surface wear or partial wear. After we revised the brush pressure requirements, more than a year of practice shows that the above failures have been basically eliminated. Let’s talk about some of the issues that we have in mind. 1. Although we used to specify the pressure after the brush holder assembly