Foundation pit reinforcing expansion anchor rod

The utility model relates to the technical field of expansion body anchor rods, in particular to a foundation pit reinforcing expansion body anchor rod which comprises a rod body, an expansion body bag is fixedly connected to the outer side of the bottom of the rod body, limiting pieces are fixedly connected to the three sides of the top of the expansion body bag, and a grouting pipe is movably connected to the other side of the top of the expansion body bag. The anchor rod has the advantages that the grouting pipe and the rod body are attached more tightly due to the fact that the open groove is formed in one side of the rod body, the rod body and the grouting pipe can be inserted into an anchor hole more smoothly, and the situation that installation efficiency is affected by relative movement of the rod body and the grouting pipe is avoided; and when the grouting pipe pours filling slurry into the expansion body bag, the action relation between the clamping blocks and the clamping grooves can offset the out