Lifting electromagnet only sucking single steel plate

Abstract

The invention relates to a lifting electromagnet only sucking a single steel plate. At least one hollow inner magnetic pole is longitudinally arranged in the electromagnet, outer magnetic poles are arranged on the two sides of the electromagnet, and a coil is arranged in the electromagnet and connected with a junction box on the upper portion of the electromagnet. The lifting electromagnet can suck and lift one steel plate very accurately, and even if a series of factors such as the thickness of the steel plate, the flatness of the steel plate, the abrasion degree of the electromagnet, the airgap between the electromagnet and the steel plate and whether water is accumulated or not during storage of the steel plate are changed, lifting and conveying of the single steel plate is not affected; and sucking and lifting of the single steel plate is not needed to be achieved by magnetism adjusting through a matched control device, an electric control device always outputs the maximum exciting voltage to the electromagnet, so that the operation of lifting and conveying the steel plate is safer and more reliable.

Description

technical field [0001] The invention relates to the technical field of lifting electromagnets. Background technique [0002] The lifting electromagnet for lifting a single steel plate has been widely used in steel mills and shipyards. The traditional lifting electromagnet for lifting a single steel plate is usually realized by adjusting the magnetic field of the electronic control device. Supervising the operation at the position where the steel plate is lifted will often lead to the inability to accurately lift a steel plate, especially when the thickness of the steel plate varies from 5 to 100mm. When the thickness of the steel plate is more than 20mm, the single steel plate can be hoisted by adjusting the magnetism. Influenced by a series of reasons, such as the air gap of the steel plate and whether there is water accumulation when the steel plate is stored, when lifting a steel plate, it often happens that either several steel plates are lifted, or none of them can be ...

AI Technical Summary

Problems solved by technology

[0002] The lifting electromagnet for lifting a single steel plate has been widely used in steel mills and shipyards. The traditional lifting electromagnet for lifting a single steel plate is usually realized by adjusting the magnetic field of the electronic control device. Supervising the operation at the position where the steel plate is lifted will often lead to the situation that a steel plate cannot be lifted accurately, especially when the thickness of the steel plate varies from 5 to 100mm.

When the thickness of the steel plate is more than 20mm, the single steel plate can be hoisted by adjusting the magnetism. Influenced by a series of reasons, such as the air gap of the steel plate and whether there is water accumulation when the steel plate is stored, when lifting a steel plate, it often happens that either several steel plates are lifted, or none of them can be lifted, and the lifting operation is also very difficult. unsafe

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