DRIVING HOLE DEVISE IN SOIL LAYER

DRIVING HOLE DEVISE IN SOIL LAYER

This invention relates to a hole digger for soil layer that comprises a machine body and a reamer which is installed on the machine body, able to move axially and composed of several independent elements which are annularly arranged on the machine body and can move radially. A main dog and an additi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SERGEI IGOREVICH DEMENTIEV, PETR VLADIMIROVICH DOBROSELSKY, IGOR VLADIMIROVICH NIKOLAEV
Format: Patent
Sprache:eng
Schlagworte:
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
TUNNELS
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Beschreibung
Zusammenfassung:This invention relates to a hole digger for soil layer that comprises a machine body and a reamer which is installed on the machine body, able to move axially and composed of several independent elements which are annularly arranged on the machine body and can move radially. A main dog and an additional dog directly near the main one are arranged on the machine body. The outer surface of additional dog is inclined towards the part of machine body, which acts on the soil layer, and acts on each other with the inner surface of an element of reamer.