Rotatory two extrusion stake pile head

(B, ) the utility model relates to a rotatory two extrusion stake pile head. In the complicated stratum circumstances, the stake footpath is not more than the stake of (b) (b) 800 (b) (b) mm and all can constructs, and during traditional rotatory extrusion stake pile head buried the rotatory extrusion of drill bit with the overdraft through the rotation of rig, a traditional rotatory extrusion pile head wraps up the blade outward for the cylinder formula, and was very inconvenient in extrusion process. A rotatory two extrusion stake pile head which constitutes and includes: stiff end (b) (b) 1 (b) (b), first extrusion section (b) (b) 3 (b) (b), second extrusion section (b) (b) 2 (b) (b), the stiff end extrude section for first extrusion section and second down, first extrusion section go up around blade (b) (b) 4 (b) (b) with second extrusion section, a first extrusion section and a second extrusion section ellipse, first extrusion section and second extrusion section on blade top -down more and more intensive. The utility model discloses be applied to rotatory two extrusion stake pile head. (B, )