This guarantees the implementation of alarming and controlling when the fault happens. The integration of alarm and control promotes the safety of the hoisting machine disc braking system.

The working reliability of disk brake system is analyzed, through which the main factors influencing the reliability and the main causes of malfunction of the brake are discussed.

This paper introduced the principle, the process and the effect of the new technology of restoring the deformed brake plate of hoist by use of "oxygen acetylene flame".