Spiral feeding and pipeline protection method and system of spiral ship unloader

The invention provides a spiral feeding and pipeline protection method and system for a spiral ship unloader, and the method comprises the steps: collecting the rotating speed, current and torque data of a motor during the normal operation of a spiral conveyor, and generating an empirical data set; performing data cleaning on abnormal values in the empirical data set; based on the cleaned empirical data set, respectively establishing empirical function models of motor current and torque; acquiring the rotating speed, current and torque data of the motor in real time and cleaning the data; and comparing the real-time rotating speed, current and torque data after cleaning with the empirical function model, judging the running condition of the screw conveyor, and if the screw conveyor runs abnormally, stopping the machine and giving an alarm. According to the method, the empirical function model of the rotating speed, the motor current and the torque is established, the operation condition of the spiral conveyor