In mill plants, the gear and rack are usually adopted as the pushing system of the three magnetism blocks of the pushing bed in magnetic force, The three magnetism blocks are out of step to start in the first twinkling of an eye in operation,that means driving single magnetism block instantaneously, It makes this magnetism block instantly overloaded, which will cause the rack to slip the tooth.

Research on Linkage System Model of Network Security Incident Response and Typical Tools Creation;

Correct design method of fire automatic alarming and linked system;