The noise generated by the reducer of a running electric hoist is usually related to factors such as insufficient lubrication, gear or bearing damage, assembly accuracy issues, and brake ring wear. The following are specific reasons and analysis:

Insufficient lubrication:

Reason: If the gearbox or bearings of the reducer lack lubricating oil, it will lead to increased wear of the bearings or gears, resulting in abnormal noise.

Performance: The reducer will make a loud "buzzing" sound, and the gears and bearings may be damaged due to excessive wear.

Solution: The machine should be stopped immediately for inspection, lubricating oil should be added as required, and qualified lubricating oil should be replaced regularly to ensure the normal operation of the reducer.

Gear or bearing damage:

Reason: Wear, damage, or improper installation of gears or bearings can cause the gearbox to produce noise during operation.

Performance: Noise may manifest as sharp and piercing sounds or irregular impact sounds, and as the degree of wear increases, the noise will gradually increase.

Solution: Damaged gears or bearings should be replaced immediately to eliminate faults and reduce noise.

Assembly accuracy issue:

Reason: The assembly accuracy of the reducer is not high, such as insufficient gear machining accuracy, large tooth profile or tooth direction errors, which can lead to poor gear meshing and generate noise.

Performance: Noise may manifest as periodic vibrations or impact sounds, and may gradually intensify with the operation of the reducer.

Solution: The assembly accuracy of the reducer should be improved to ensure that the gear machining accuracy meets the requirements, in order to reduce the generation of noise.

Brake ring wear:

Reason: Excessive wear of the brake ring can cause noise during braking.

Performance: During the braking of an electric hoist, abnormal noise may be heard, which is usually caused by the wear of the brake ring leading to a decrease in braking effect and the inability of components to effectively reset, resulting in friction noise.

Solution: The bolts should be adjusted or the brake ring should be replaced to restore the normal function of the brake and reduce noise.

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