Novel expansion anchor rod

The invention provides a novel expansion anchor rod. The novel expansion anchor rod comprises a sleeve and a grouting pipe arranged in the sleeve in a sleeved mode. The grouting pipe is provided with a reducing expansion end part at the end part of the anchoring side of the novel expansion anchor rod, and the other end of the grouting pipe is provided with an external thread; a rotating handle is arranged at the end, provided with the external threads, of the grouting pipe, and internal threads are arranged on the inner side of the rotating handle so as to be matched with the external threads on the grouting pipe. The sleeve is provided with a plurality of sharp ends at the end of the anchoring side of the novel expansion anchor rod, and in the initial state, the free ends of the sharp ends at least do not exceed the variable-diameter expansion end of the grouting pipe. The structure of the anchoring end of the anchor rod is improved, the anchoring effect is improved, the required anchoring force can be achie