Bag dragging device of grouting material packaging machine

The utility model discloses a bag dragging device of a grouting material packaging machine, which comprises a bag dragging frame, a supporting plate is arranged at the bottom of the bag dragging frame, a driving wheel and a driven wheel are in transmission connection through a conveying belt, a rotating motor is arranged at one end of the driving wheel, an output shaft of the rotating motor is fixedly connected with a driving rotating shaft through a coaxial device, and the output shaft of the rotating motor is fixedly connected with the driven rotating shaft. A pressure sensor is arranged on the conveying belt, four supporting legs are fixedly connected to the bottom of the supporting plate, a hydraulic air cylinder is fixedly connected to the bottom of the connecting plate, a movable plate is fixedly connected to the bottom of a telescopic rod of the hydraulic air cylinder, sliding grooves are formed in the supporting legs, and the two ends of the movable plate are arranged in the sliding grooves. The water