NEWS CENTER

Common Faults and Solutions of Electric Hoist


Release time:

Dec 15,2021

As we all know, if the head wheel and the bottom wheel drive shaft of the electric hoist are installed in the wrong way or in the wrong direction, it is very easy to cause the phenomenon of deviation of the hopper belt. Its main manifestation is that the transmission shafts of the bottom wheel and the head wheel are in the same vertical plane, but are not parallel or two transmission shafts. Although they are installed in a horizontal position, they are not in the same vertical plane. Above, or although the two transmission shafts are parallel and still on the same vertical plane, they are not horizontal.

As we all know, if the electricHoistIf the head wheel and the bottom wheel drive shaft are installed in the wrong way or in the wrong direction, it is very easy to cause the hopper belt to deviate. Its main manifestation is that the transmission shafts of the bottom wheel and the head wheel are in the same vertical plane, but are not parallel or two transmission shafts. Although they are installed in a horizontal position, they are not in the same vertical plane. Above, or although the two transmission shafts are parallel and still on the same vertical plane, they are not horizontal.

After the above three situations, the hopper belt is very prone to deviation, which causes the hopper and the barrel to collide, thus causing the hopper belt to tear. In addition, the electricHoistThe head will also be subjected to relatively heavy pressure, which can even reach about 100 tons when the pressure is high. In this case, if it is operated for a long time, it is very easy to cause the phenomenon of extrusion wear at the bearing position.

After the occurrence of this failure, the traditional method is brush plating or repair welding after processing and repair, but these two treatment schemes have certain shortcomings, for example, if the thermal stress generated by repair welding and high temperature process is no way to offset, so it is easy to make the material of the electric hoist damaged, so that the hoist parts appear fracture or bending phenomenon.

If the use of brush plating this way, will be affected by the coating thickness of the phenomenon of peeling, and the above two methods are the use of metal to repair the metal, there is no way to change the relationship between the material, so that under the action of internal stress will still appear again wear phenomenon.

At present, the commonly used method is to use polymer composite materials for repair, because the polymer materials and adhesion are very strong, and have good comprehensive mechanical properties. The application of this polymer composite materials to repair the hoist can avoid the processing after disassembly of the machine, which will not be affected by thermal stress, and the thickness of the repair will not be limited by the material. At the same time, the polymer composite materials have metal materials that do not have, some of the dark can improve the impact and vibration force of the electric hoist, avoid its re-wear, but also can greatly extend the service life of the hoist equipment to save a lot of downtime, through this repair method can also bring greater economic value to the construction side.

Therefore, when the electricHoistWhen the above failures occur, do not use the traditional brush plating or repair welding form, you can use polymer composite materials for repair, more convenient.