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随着运输事业不断发展,我段管内设有大量ZD—4型电动转辙机。这种电动转辙机运行一段时间后,因整流子与炭刷间打火将整流子各片之间绝缘物烧损,以致造成短路、断线等故障,直接危及行车安全。为了修复整流子故障,过去普通车床加工,由于转子轴顶针不正,加工后整流子面与轴不同心,因而炭刷在整流子面上颤动以致产生火花,仍不能保证安
With the continuous development of transport, I have a large number of sections ZD-4-type electric switch machine. This electric switch machine running for some time, due to commutator and charcoal spark between the pieces of the commutator burn insulation, resulting in short circuit, disconnection and other failures, directly endanger traffic safety. In order to repair the commutator fault, in the past ordinary lathe machining, the rotor shaft thimble is not correct, after processing the commutator surface and the shaft is not concentric, so the carbon brush in the commutator surface flutter resulting spark, still can not guarantee the safety