An impact tooth for rock drilling and a drill bit comprising the impact tooth

Abstract

The utility model discloses an impact tooth for rock breaking drilling and drill bit containing the impact tooth relates to oil and gas exploration field, including the cylinder and the cap for embedding in the drill bit, and the cap covers is established at the cylinder top, install retractable gland and the spring I of abutting tightly gland in the cylinder, and the one end of gland that projects the cylinder is equipped with the composite sheet, still be equipped with the striker of the inclined arrangement in the cylinder, and the tail end of striker extends to the cap, and the head end of striker is abutting tightly with the gland end face, and still be equipped with the spring II on the striker, and the both ends of spring II are respectively abutting tightly with cylinder bottom, striker head end. The utility model can make the drill bit in the drilling process, and the impact tooth can not only resist the impact load of axial, but also can reach the effect of impact rock breaking through the impact load of spring when the drilling pressure reaches the set limit.

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