Review of Permanent Magnet Lifting Technology

Abstract

Abstract Permanent magnet lifting technology refers to the knowledge of the process of magnetic material suction unloading and transfer through permanent magnet lifting device with strong magnetic material as magnetic field energy. Compared with the traditional electromagnetic lifting device, the permanent magnet lifting device attracts and lifts ferromagnetic objects through the magnetic force of strong magnetic permanent magnet materials without excitation current during the lifting operation. Therefore, the permanent magnet lifting device has the advantages of energy saving, reliable use, low cost and high weight absorption ratio. This paper introduces the development of permanent magnet lifting technology, including the working principle and design problems of permanent magnet lifting device. According to the different demagnetization methods, it can be divided into electromagnetic demagnetization type lifting permanent magnets and mechanical demagnetization type lifting permanent magnets. Finally, the prospect of permanent magnet lifting technology is prospected and suggestions for its development are put forward.