Common Faults and Adjustment of Electric Hoist
Release time:
24-04-09
Fault |
The main reason |
Processing method |
1After starting, the motor does not rotate, and heavy objects cannot be lifted. |
(11) Excessive overload |
Do not allow overload use |
(2) Voltage lower than rated voltage10More than% |
Equal voltage returned to normal |
|
(3) The electrical appliance is faulty, resulting in disconnection or poor contact |
Overhaul electrical appliances and lines |
|
(4) The brake wheel and the rear end cover are corroded and seized, and the brake wheel cannot be separated. |
Remove the brake wheel and clean the rusted surface |
|
(52) Motor bore sweep |
When the support ring is replaced, there is a symmetrical gap between the cone surfaces of the stator and rotor, and there is a symmetrical gap between each side. Each side is0.35-0.55mm (small motor gap is small) or send it back to the manufacturer for repair |
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22. The braking is unreliable, and the sliding distance exceeds the specified requirements |
(1) Poor contact between the brake ring and the conical surface of the rear end cover |
Remove the grinding |
(2) The braking surface is oily |
Remove cleaning |
|
(3) Loose brake ring |
Replace brake ring |
|
(42) Pressure spring fatigue |
Replace spring |
|
(52) The coupling is not working or stuck. |
Check its connection part |
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3High temperature rise of motor |
(12) Overloading |
Not allowed |
(2) Too frequent operation |
PressFC30% work system |
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(3) The brake clearance is too small, and the brake ring is not completely disengaged during operation, which is equivalent to additional load |
Readjust the gap |
|
42. Excessive noise of the reducer |
(14) Poor lubrication |
Dismantling and maintenance |
(2) Excessive gear wear, excessive gap between teeth |
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(3) Damaged gear |
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(42) Bearing damage |
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5The motor makes a buzzing sound when starting. |
(12) Less phase of power supply and motor |
Repair or replace the contactor |
(23) Poor contact of AC contactor |
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