Description: During the use of explosion-proof electric hoist, due to various factors, the internal components may malfunction, and abnormal noise may occur. The location, height, and sound of these noises will vary with the cause of the failure. . During maintenance, you should listen and watch more. Use or according to the characteristics of the fault sound, determine the location of the sound, and find and repair the fault.
During the use of explosion-proof electric hoists , internal components may fail due to various factors, and abnormal noise may occur. The location, height, and sound of these noises will vary according to the cause of the failure. During maintenance, you should listen and watch more. Use or according to the characteristics of the fault sound, determine the location of the sound, and find and repair the fault.
1. Abnormal noise occurs on the control loop and will emit "hum" noise. Generally, the contactor is faulty, such as the poor contact of the AC contactor, the voltage level does not match, and the magnetic core is stuck. The faulty contactor should be repaired. If it cannot be repaired, it must be replaced. After treatment, the noise will be eliminated by itself.
2. Single-phase operation of the motor, bearing damage, misalignment of the shaft center of the coupling, and "sweep" will make the motor make abnormal noises.
During single-phase operation, the entire motor will emit a regular “buzzing” sound; when the bearing is damaged, a “buzzing” sound accompanied by “crowd-crowd” will be issued near the bearing; and the coupling When the axis of the actuator is not correct or the motor is slightly scoured, the entire motor will emit a very high "humming" sound, which is accompanied by sharp and harsh sounds from time to time.
3. When abnormal noise is emitted from the reducer, it proves that the reducer is malfunctioning, such as the lack of lubricant in the reducer or the bearing, the wear or damage of the gear, and the bearing damage. At this time, the machine should be stopped and checked. First, determine whether the reducer or bearing of the reducer has been lubricated before use, and whether the lubricant is regularly changed during use. If not lubricated as required, the reducer will not only generate excessive "humming" sound, but also damage the gears and bearings.
In short, when the explosion-proof electric hoist has an abnormal sound, it is necessary to find the fault according to the difference in noise, and perform item-by-item repair to restore the normal performance of the motor. When the motor failure is not handled, the use of the electric hoist is prohibited.
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