The winch is widely used in industrial and mining, metallurgy, lifting, construction, chemical industry, road and bridge, hydropower installation and other lifting industries. However, in daily operation, regular maintenance is necessary. Let's learn how to maintain the hoist together.
The motor is an important part of the winch, and it is also the most expensive part of the winch. If it is damaged, the repair or replacement cost will be very high. Therefore, here, Shanghai Shenwei Machinery Co., Ltd. reminds customers to take good care of the motor of the winch or winch. The maintenance methods are as follows:
1. The use environment should be kept dry frequently, the surface of the motor should be kept clean, and the air inlet should not be hindered by dust and fibers.
2. When the thermal protection of the motor continues to operate, it should be determined whether the fault comes from the motor or overload or the setting value of the protection device is too low. After the fault is eliminated, it can be put into operation.
3. The motor should be well lubricated during operation. The general motor runs for about 5000 hours, that is, the grease should be replenished or replaced. When the bearing is overheated or the lubrication is deteriorated during the operation, the hydraulic pressure should be changed in time. When replacing the grease, the old lubricating oil should be removed, and the oil groove of the bearing and bearing cover should be cleaned with gasoline, and then ZL-3 lithium-based grease should be filled in 1/2 of the cavity between the inner and outer rings of the bearing (for 2 poles) And 2/3 (for 4, 6, and 8 poles).
4. When the life of the bearing ends, the vibration and noise of the motor will increase significantly. When the radial clearance of the bearing reaches the following value, the bearing should be replaced.
5. When disassembling the motor, you can take out the rotor from the extended or non-extended shaft. If it is not necessary to remove the fan, it is more convenient to remove the rotor from the non-shaft extension end. When the rotor is drawn from the stator, damage to the stator winding or insulation should be prevented.
6. The form, size, number of turns, wire gauge, etc. of the original winding must be noted when replacing the winding. When these data are lost, it should be obtained from the manufacturer, and the original design of the winding can be changed at will. Deteriorated, even unusable.
