Anchor rod with movable locking barbs

The invention provides an anchor rod with a movable locking barb. The anchor rod comprises a pipe body, a sliding seat, an overturning barb and a pneumatic structure. The pipe body is provided with a pipe cavity, a plurality of blocking plates are arranged in the pipe body at intervals, and a working cavity is defined by any two adjacent blocking plates. The side wall of the pipe body is further provided with a plurality of opening structures which correspond to the working cavities and are communicated with the working cavities, and each opening structure comprises at least two long-strip-shaped openings. The multiple sliding seats are arranged, and the sliding seats are arranged in the working cavities in a sliding mode. The number of the overturning barbs is multiple, the overturning barbs correspond to the working cavities in a one-to-one mode, and each overturning barb comprises a plurality of barb bodies. The pneumatic structure can push the sliding seats to move after being inflated, so that the barb b