Device for driving holes in the ground

A device for driving holes is provided with a crankshaft on which accommodated on respective crankspins with a provision for free rotation, is a cone-shaped member at the front end followed by a succession of tapered rollers which are the transverse parts of a conically shaped body. The apparatus is...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	TROFIMUK, ANDREI ALEXEEVICH, SVIRSCHEVSKY, VALENTIN KONSTANTINOVICH, OREKHOV, ANATOLY ALEXANDROVICH, TREGUBOV, BORIS GRIGORIEVICH
Format:	Patent
Sprache:	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:	A device for driving holes is provided with a crankshaft on which accommodated on respective crankspins with a provision for free rotation, is a cone-shaped member at the front end followed by a succession of tapered rollers which are the transverse parts of a conically shaped body. The apparatus is provided with means ensuring its longitudinal travel in the hole. When the crankshaft is rotated, the cone-shaped member and tapered rollers start rolling over the wall of the hole, gradually enlarging the latter and compacting the wall by laterally displacing the ground. The device is capable of driving holes with a diameter as large as 800 mm in any compactable ground thus, producing firm and stable walls.