I want to introduce the working principle of permanent magnet jack. Does anyone know?

Permanent magnet jack is small in size, light in weight and strong in suction. Unique magnetic circuit design, remanence is almost zero. The safety factor is high, and the large pull-off force is 3.5 times of the rated lifting force. The handle switch is attached with a safety button, which can be operated with one hand, convenient and safe. The V-shaped groove at the bottom of the jack can lift the corresponding round steel and steel plate. No electricity, permanent magnetic force, safe use. Can be used in the field, widely used in the lifting and transportation of flat mechanical parts and steel, and can be widely used in mold and machinery manufacturing industries. Advantages of permanent magnet lifting zm*j-t0.5/9 counterweight

1. The magnetic circuit is designed by computer simulation, with reasonable magnetic field distribution and large magnetic penetration depth.

2. Compared with electromagnetic iron remover, the main body of iron remover is simplified, and there is no excitation power supply and cooling system.

3. Power saving and low failure rate.

4. Simple operation and safe and reliable operation.

5. All technical indicators meet the standard of JB/T 8711-1998.