The weight of the boiler fan rotor in the thermal power plant is heavy, the motor power is large, and the energy consumption is high. When the motor needs to be started frequently, the power consumption will be large, which will have a great impact on the equipment and the power grid. Fan turning gear is to drive the motor rotor and the fan rotor to rotate. In the process of rotor rotation, the motor is started to reduce the energy consumption of motor starting and the impact on the power grid and equipment. It is an energy-saving turning gear, which can realize automatic meshing and automatic exit. The turning speed is 0~80 r/min.