Draw-bar box with protection mechanism

The utility model relates to the technical field of sound boxes. The utility model relates to a loudspeaker box, in particular to a draw-bar loudspeaker box with a protection mechanism. Box body, oneside of the box body is provided with a main body, walking wheels are arranged at two ends of the bottom of the main body; the two travelling wheels are rotationally connected with the main body; a lug is arranged in the middle of the bottom end of the body. Wherein the lugs are fixedly connected with the body, fastening bolts are arranged on the outer sides of the lugs, penetrate through the lugsand are rotationally connected with the lugs, telescopic devices are arranged on the inner sides of the lugs, the output ends of the telescopic devices are fixedly connected with the lugs through thefastening bolts, supporting wheels are arranged at the ends, away from the lugs, of the telescopic devices, and the supporting wheels are rotationally connected with the telescopic devices through pin shafts. The device is hig