Drill rod clamping device for rotary-cut shield trenchless equipment

The utility model discloses a drill rod clamping device for rotary-cut shield non-excavation equipment, which comprises a bottom plate, a clamping mechanism is arranged on the bottom plate, the clamping mechanism comprises a seat body fixedly assembled on the bottom plate, the seat body is provided with a central through hole and a mounting cavity surrounding the central through hole in the circumferential direction, and the mounting cavity is provided with a plurality of through holes. The center through hole is used for installing a drill rod in a penetrating mode, assembling notches distributed in the circumferential direction of the center through hole in an array mode are formed in one end of the center through hole, clamping blocks capable of sliding in the radial direction of the center through hole are installed in the assembling notches, and a piston capable of sliding in the axial direction of the center through hole is assembled in the installation cavity. And the piston slides back and forth to fo