我公司有一台上海某港机厂制造的流动吊机,碰号为 ST-16,最大起重量为16吨,最大工作电流150A。集电环总成是非标准件,由于设计和材料的原因,其碳刷握架经常损坏,使碳刷卡死和倾斜,与集电环接触不良,以致其表面被电弧灼得粗糙不平, My company has a Shanghai port machinery factory to create a mobile crane, touch for the ST-16, the maximum lifting capacity of 16 tons, the maximum operating current of 150A. Collar ring assembly is a non-standard parts, due to design and material reasons, the carbon brush holder is often damaged, so that the carbon card stuck and tilted, poor contact with the slip ring, so that the surface of the arc burning rough,