A vertical shaft drilling rig capable of mechanically unscrewing drill rods

Abstract

The invention provides a vertical shaft type drilling machine capable of mechanically unscrewing a drill rod. Rotary power of an output shaft of a speed changing box connected with a motor is transmitted to a vertical shaft by a pair of gears mounted in a rotation box, rotation of a sliding shaft sleeve is transmitted to a drill rod main shaft parallel with the vertical shaft through a pair of cylindrical gears, and a chuck for clamping the drill rod is fixed below the main shaft and can drive the drill rod and the main shaft to rotate together; a clamper fixed on the rotation box and capable of clamping the drill rod is arranged below the chuck; and a drill rod joint between two segments of the drill rods is arranged between the chuck and the clamper. When the drill rod is clamped by the chuck, the clamper is loosened, and the drill rod drills in a forward direction; and when the drill rod is simultaneously clamped by the chuck and the clamper, the chuck rotates in a backward direction, and the drill rod joint is unscrewed. The vertical shaft type drilling machine capable of mechanically unscrewing the drill rod has the beneficial effects that a long rod boring manner can be adopted, and a short rod boring manner can be adopted as well; the vertical shaft type drilling machine is suitably used on the ground or in a pit and is suitable for multi-angle drilling; the drill rod can be unscrewed in a non-manual manner when a hole is not vertically drilled; and when the drill rod is unscrewed, a drill rod post in the hole can not rotate, and the friction resistance is low.

Description

technical field [0001] The invention belongs to the field of drilling rigs in engineering machinery. In particular, the utility model relates to a vertical-axis drilling rig capable of mechanically unscrewing and unloading drill rods, which is used for geological exploration, tunnel drilling and other formation drilling constructions. Background technique [0002] Geological exploration drilling rigs are mainly vertical shaft drilling rigs and full hydraulic drilling rigs. The overall layout of the full hydraulic drilling rig is relatively flexible and has comprehensive functions. Mechanical automatic unscrewing and unloading of drill pipes replaces manual unscrewing and unloading of drill pipes, saving time and effort. Due to the limitation of the structure of the vertical shaft drilling rig, it is difficult to automatically unscrew the drill pipe mechanically. The existing method is to use a hydraulic pipe twisting machine, but this method is only suitable for vertical dri...

AI Technical Summary

Problems solved by technology

Due to the limitation of the structure of the vertical shaft drilling rig, it is difficult to automatically unscrew the drill pipe mechanically. The existing method is to use a hydraulic pipe twisting machine, but this method is only suitable for vertical drilling and not for horizontal or other angle drilling. The second is to use a three-chuck drilling rig, which rotates forward to unscrew the drill pipe, and there are also problems such as the chuck string is too long and the frictional resistance of the drill pipe column in the hole is too large when unscrewing the drill pipe.

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