Customer Background

The Nigeria customer is mainly engaged in oil field projects. Because of the project requirements, he chose the explosion-proof hoist.

The explosion-proof hoist adopts explosion-proof motor and explosion-proof brake, and the highest explosion-proof standard meets the requirements of ExdIIBT4. According to the characteristics of the product, it is more suitable for applications in some coal mines, petroleum, and chemical industries where pyrotechnics are prohibited.
The hoist is divided into fast hoist and slow cigarette, while the explosion-proof hoist is divided into fast explosion-proof hoist and slow explosion-proof hoist. Next, the editor will give a comprehensive introduction.
The explosion-proof hoist adopts explosion-proof motor and explosion-proof brake, and the explosion-proof standard meets the requirements of ExdIIBT4. It is suitable for some coal mines, petroleum and chemical applications. Explosion-proof electric hoist and explosion-proof Remote Control Electric Winch are the replacement products of traditional traction and lifting devices. They are fixed installation and are widely used in oil exploration, drilling rig supporting lifting, mine construction and other fields. It overcomes the shortcomings of traditional winches and has small size and weight. Lightweight, large torque, low noise and so on. It is operated by remote control, easy to use, safe and reliable.
The slow-speed explosion-proof hoist is a device that drives the reel and winds the rope to complete the traction work by manpower or mechanical power. The slow-speed explosion-proof hoist is a simple hoisting machine for vertically lifting, horizontally or obliquely pulling heavy objects. There are two types of slow explosion-proof hoists: manual and electric, mainly electric. The slow-speed explosion-proof hoist is composed of a motor, a coupling, a brake, a gearbox and a reel, and is installed on the frame together. Electric hoist can also be called electric hoist. When the lifting height and loading and unloading capacity are large and the work is busy, it is required to have good speed regulation performance, especially the empty hook can be lowered quickly. For materials that are installed in place or sensitive, they must be able to drop at a fretting speed.

Routine maintenance of hoist:

1. The operating environment should always be kept dry, the surface of the motor should be kept clean, and the air inlet should not be obstructed by dust, fibers, etc.
2. When the thermal protection of the motor operates continuously, it should be found out whether the fault comes from the motor or the overload or the setting value of the protection device is too low, and the fault can be eliminated before it can be put into operation.
3. The motor should be well lubricated during operation. Generally, the motor runs for about 5000 hours, that is, the grease should be replenished or replaced. When the bearing is found to be overheated or the lubrication has deteriorated during operation, the hydraulic pressure should replace the grease 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 base grease should be filled into 1/2 of the cavity between the inner and outer rings of the bearing (for 2 poles) And 2/3 (for 4, 6, 8 poles).
4. When the life of the bearing is over, the vibration and noise of the motor will increase significantly. When the radial clearance of the bearing reaches the following values, the bearing should be replaced.
5. When disassembling the motor, the rotor can be taken out from the shaft extension end or the non-extension end. If it is not necessary to remove the fan, it is more convenient to remove the rotor from the non-shaft end. When pulling the rotor out of the stator, it should prevent damage to the stator winding or insulation.
6. When replacing the winding, you must write down the form, size, number of turns, wire gauge, etc. of the original winding. When you lose these data, you should ask the manufacturer to change the original design winding at will, which often makes one or more performances of the motor deteriorating, or even unusable.