DEVICE FOR DRILLING HOLES IN GROUND

DEVICE FOR DRILLING HOLES IN GROUND

The soil borer includes a shell, a driving mechanism and a rear shell screw-connected to the shell. On the outer surface of rear shell, there is a lobe, which is the stopper of rear shell to the shell and extends beyond the shell. One side of the lobe is slanting to the generatrix of the rear-shell...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: PETR VLADIMIROVICH DOBROSELSKY, IGOR VLADIMIROVICH NIKOLAEV
Format: Patent
Sprache:eng
Schlagworte:
CESSPOOLS
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SEWERAGE
SEWERS
SHAFTS
TUNNELS
WATER SUPPLY
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Beschreibung
Zusammenfassung:The soil borer includes a shell, a driving mechanism and a rear shell screw-connected to the shell. On the outer surface of rear shell, there is a lobe, which is the stopper of rear shell to the shell and extends beyond the shell. One side of the lobe is slanting to the generatrix of the rear-shell surface in the direction of screw moment. On the rear shell is another additional lobe, which produce tightening moment in the screw when the borer reverses.