The driving system has a variety of forms, with the industry application and different working conditions, the power and structure size have great differences. However, in almost all heavy-duty working conditions and hard linked work places, such as coal mine, cement, steel, wind power, military industry and other large equipment, the impact load caused by the huge rotational inertia of the drive system itself, brings huge hidden dangers to the normal operation of the equipment. The torque limiter is installed between the motor and the load, which can effectively protect the equipment from the damage caused by the impact load and ensure the equipment running in production.