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1.故障现象我厂有一台CD1型5t电动葫芦,在使用中突然出现异常情况:当按按钮开关的上升键时,锥形电机发出“嗡嗡”声,吊钩不上升,而按下降键时,吊钩能正常下降,接着再按上升键,电动葫芦有可能恢复正常;有时则需经历几次上升、下降动作之后,葫芦才能正常工作。 2.检查起先怀疑是控制上升的接触器在吸合过程中因接触不良引起缺相所致。但检查结果,未发现异常。难道是锥形电
1. Symptom I plant a CD1 5t electric hoist, the sudden appearance of anomalies in use: when the push button switch up button, the cone motor issued a “buzzing” sound, the hook does not rise, and press the When the descending key, the hook can descend normally, then press the ascending key again, it is possible for the electric hoist to return to normal; sometimes it takes several times to ascend or descend to move the hoist to work normally. 2. Check at first suspect that the control of the rising contactor during the pull due to poor contact caused by lack of phase. However, the test results, no abnormalities were found. Is it conical electricity?