Drill bit device of jet drilling machine

The utility model discloses a drill bit device of a jet drilling machine. The utility model discloses a drill bit device which is high in stability. Key points of the technical scheme are as follows,supporting rod, a telescopic device is arranged at the top end of the supporting rod; a drill bit is arranged at an outlet of the telescopic device; a stabilizing device is further arranged on the supporting rod; the stabilizing device comprises a cross rod located at the bottom of the supporting rod and perpendicular to the supporting rod, a sliding groove formed in the surface of the supportingrod, a sliding block located on the sliding groove, an impactor located on the supporting rod and used for impacting the cross rod, circular supporting frames located on the two sides of the cross rodand inserting rods located at the bottoms of the supporting frames. 本实用新型公开了一种喷钻机钻头装置，旨在提供一种稳定性较高的钻头装置，其技术方案要点是，包括支撑杆，所述支撑杆顶端设有伸缩装置，所述伸缩装置出口设有钻头，所述支撑杆上还设有稳固装置，所述稳固装置包括位于支撑杆底部设有与支撑杆垂直的横杆、位于支撑杆表面设有的滑槽、位于滑槽上设有的滑块、位于支撑杆上设有用于击打横杆的冲