Crane electromagnet for lifting high-temperature vertical steel roll

Abstract

The invention discloses a lift electromagnet to swing the high temperature vertical steel coil. The loop and the poles of the electromagnet are even number; the polarities of adjacent poles are opposite which the two poles are 'U' shape electromagnet; the electromagnet with more than four poles is 'cinquefoil'; a supporting board is connected in the bottom of the poles vertically; the other undersides are connected with many soft poles which the up end is fixed and the lower end is free; the length of it is longer than the supporting height. The invention has the strong swing ability and low energy cost, light weight and work credibility.

Description

technical field [0001] The invention relates to a lifting electromagnet, in particular to a lifting electromagnet for lifting high-temperature vertical steel coils. Background technique [0002] In coil production, it is often necessary to lift coils under high temperature conditions, such as lifting vertical steel coils in annealed state (that is, steel coils whose axis is perpendicular to the horizontal plane), and the temperature of these products is generally between 100°C and 500°C. At present, plum blossom-shaped electromagnets and other multi-pole electromagnets are generally used for hoisting cold vertical steel coils, which can basically meet the requirements. However, due to the specific temperature field and magnetic circuit characteristics of coils under high temperature conditions, the temperature of these electromagnet coils rises rapidly. The problem is difficult to solve, so it is usually to add a little heat insulation means to the original lifting cold vert...

AI Technical Summary

Problems solved by technology

At present, plum blossom-shaped electromagnets and other multi-pole electromagnets are generally used for hoisting cold vertical steel coils, which can basically meet the requirements. However, due to the specific temperature field and magnetic circuit characteristics of coils under high temperature conditions, the temperature of these electromagnet coils rises rapidly. The problem is difficult to solve, so it is usually to add a little heat insulation means to the original lifting cold vertical steel coil electromagnet, such as adding a layer of asbestos at the bottom of the coil, but mainly rely on increasing the number of ampere turns to solve the lifting high temperature. The problem of the rapid heating of the coil when the steel coil is erected is to meet the needs of lifting; thus the electromagnet consumes a lot of energy and has a large self-weight

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