Drill rod anti-falling device for rock drill head

The utility model discloses a device for preventing a drill rod of a rock drill head from falling off. Rock drill comprising a rock drill body, the middle of the lower end of the rock drill body is sleeved with a drill rod. The upper end of the surface of the drill rod is sleeved with a clamping and fixing plate. Clamping and fixing bolts are mounted at the two ends of the clamping and fixing plate; the two clamping and fixing bolts are symmetrically distributed relative to the clamping and fixing plate; a first fixing frame and a second fixing frame are installed on the two sides of the lowerend of the rock drill body through movable bolts correspondingly. A first fixing sleeve is installed at the lower end of the first fixing frame, the first fixing sleeve is located on one side of thedrill rod, a second fixing sleeve is installed at the lower end of the second fixing frame, the second fixing sleeve is located on one side of the drill rod, and connecting parts are arranged on the sides, opposite to each oth