Adjustable flexible screw drill

The adjustable flexible screw drill comprises a plurality of screw units which are sequentially connected end to end, the screw unit located at the tail end is fixedly connected with a drill bit, the screw unit comprises an upper connector, an upper stator is arranged at the bottom of the upper conn...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ZHAO WEI, ZHAO CHUNWEI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:	The adjustable flexible screw drill comprises a plurality of screw units which are sequentially connected end to end, the screw unit located at the tail end is fixedly connected with a drill bit, the screw unit comprises an upper connector, an upper stator is arranged at the bottom of the upper connector, a first transmission device is arranged in the upper stator, and an inner spherical shell is arranged on the outer wall of the bottom of the upper stator; a locking device is arranged on the outer wall of the inner spherical shell, a lower stator is arranged at the bottom of the locking device, a lower connector is arranged at the bottom of the lower stator, the inner wall of the top of the lower connector is connected with the outer wall of the bottom of the lower stator through threads, and a second transmission device is arranged in the lower stator. A transmission mechanism is arranged at the output end of the first transmission device, the input end of the second transmission device is in transmission c