The 2JK mine hoist is mainly suitable for vertical shafts in coal mines, metal mines, and non-metal mines for lifting minerals, lowering materials, lifting personnel and equipment. However, in the process of application, it is inevitable that some problems may arise. If problems are not dealt with, they will delay the progress of the project. The method is to prevent these incidents in a timely manner. Below, the editor will take you to see how to maintain the mine hoist.
The operating environment should always be monotonous, the surface of the motor should be kept clean, and the air inlet should not be obstructed by dust, fibers, etc. When the thermal protection of the motor continues to operate, it should be determined whether the fault comes from the motor being overloaded or the setting value of the protection equipment being too low. After removing the fault, it can be put into operation.
It should be ensured that the motor is lubricated during operation. A typical electric motor should be compensated or replaced with lubricating grease after working for about 5000 hours. If the bearing overheats or the lubrication deteriorates during operation, the hydraulic system should promptly replace the lubricating grease. When replacing the lubricating grease, the old lubricating oil should be removed, and the oil grooves of the bearing and bearing cover should be cleaned with gasoline. Then, ZL-3 lithium grease should be filled into 1/2 and 2/3 of the cavity between the inner and outer rings of the bearing.
When the service life of the bearing is over, the vibration and noise of the motor will be significantly increased. When the radial clearance of the bearing reaches the following value, the bearing should be replaced. When disassembling the motor, the rotor can be removed from either the extended or non extended end of the shaft. Assuming there is no need to remove the electric fan, it is still more convenient to remove the rotor from the non shaft extension end. When removing the rotor from the stator, precautions should be taken to prevent damage to the stator winding or insulation.
When replacing the winding, it is necessary to record the method, standard, number of turns, wire gauge, etc. of the original winding. When these data are lost, they should be obtained from the manufacturer. Changing the original planned winding arbitrarily often deteriorates one or several functions of the motor, and even renders it unusable.
The above is the content that the editor brought to you today, teaching you how to maintain and upkeep the mine hoist, ensure the quality of the mine hoist, and extend the service life of the machine.
