The drill rig such as China Punches is the main engine for the completion of drilling construction. It drives the drill tool and drill bit to drill deep into the stratum, and the lifting machine on the drill is used to complete the auxiliary work of lifting down the drill tool and casing, extracting the core and replacing the drill bit. Generally divided into the following categories:
(1) percussion drill: steel wire rope percussion drill, drill pipe percussion drill.
(2) rotary drill: vertical shaft type -- manual feed, screw differential feed, hydraulic feed drill; Rotary disc type -- steel rope plus or minus pressure type, hydraulic cylinder plus or minus pressure type drill; Mobile rotary - hydraulic power head, mechanical power head drill.
(3) vibrating drill.
(4) compound drill: a drill which has the functions of vibration, impact, rotation and static pressure combined in different combinations.
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