Is the function of the lifting electromagnetic suction cup strong?
2022-07-28
Abstract
The main component of a lifting electromagnetic chuck is the electromagnet. When the current is turned on, the electromagnet firmly attracts steel products and lifts them to the designated position. When the current is cut off, the magnetism disappears, and the steel object is lowered. The lifting electromagnetic chuck is very convenient to use, but it can only be used with electricity. It can be used in scrap steel recycling departments and steelmaking workshops. The lifting electromagnetic chuck can generate strong magnetic force. Various iron materials such as dozens of tons of iron sheets, iron wires, iron nails, and scrap iron can be easily collected and transported without packaging or bundling, saving labor during operation and simplifying the work. Steel materials and machines packed in wooden boxes can be handled in the same way. When the crane is working, as long as the current in the electromagnet coil does not stop, the lifted heavy objects will not fall. The invisible magnetic force is more reliable than solid chains. If the power is cut off for some reason, it can cause accidents. Therefore, some lifting electromagnetic chucks are equipped with steel claws. When the heavy object to be transported is lifted, the sturdy steel claws automatically drop and grip tightly. The crane cannot carry hot iron blocks because hot steel cannot be magnetized. Large lifting electromagnetic chucks can lift nearly 100 tons of heavy objects at once.
When the lifting electromagnetic chuck operates due to a power outage, and the object it lifts may cause damage, it is essential to ensure the power supply of the electric chuck. Therefore, the lifting electromagnet of the lifting electromagnetic chuck should be powered by a dedicated circuit. When the iron core is inserted into the energized solenoid, the iron core is magnetized by the magnetic field of the energized solenoid. The magnetized iron core also becomes a magnet, thus greatly enhancing the magnetic field of the solenoid due to the superposition of the two magnetic fields. To make the electromagnet more magnetic, the iron core is usually made in a shoe shape. However, it is important to note that the winding direction of the coil on the horseshoe-shaped iron core is opposite. One side must be clockwise, and the other side must be counterclockwise. If the winding directions are the same, the magnetization effect of the two coils on the iron core will cancel each other out, rendering the iron core non-magnetic. In addition, the iron core of the electromagnet is made of soft iron instead of steel. Otherwise, once the steel is magnetized, it will retain its magnetism for a long time and cannot be demagnetized, and its magnetic strength cannot be controlled by the size of the current, thus losing the advantages of the electromagnet.
An electromagnet is a device that generates magnetic force through electricity. It is a non-magnet that can easily start or eliminate its magnetism.
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