If it is necessary to stop at any point along the conveyor, it is necessary to pull the fine steel wire rope in the transportation lane (the steel wire rope can be referred to as the intermediate stop pull wire). The steel wire rope pulls down the sensor rod on the deviation and tear sensor, and uses the anti deviation and tear functions of the control box to make the output relay fail to act, alarm and lock the conveyor in case of emergency stop. After the stoppage, the conveyor can be put into operation only when the sensor rod is aligned.