Excavation machine with a pivotable kelly bar

Excavation machine with a pivotable kelly bar

An excavation machine including -a mast having a longitudinal direction, -a bar presenting a first end provided with an excavation tool, and -a carriage movable along the longitudinal direction of the mast and including a first holder member for holding the bar relative to the carriage, the carriage...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: CHAGNOT PHILIPPE, PIVERT LAURENT
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:An excavation machine including -a mast having a longitudinal direction, -a bar presenting a first end provided with an excavation tool, and -a carriage movable along the longitudinal direction of the mast and including a first holder member for holding the bar relative to the carriage, the carriage being suitable for moving the bar along the longitudinal direction of the mast. The first holder member is pivotable relative to the carriage and by the fact that the first holder member presents a locked state in which the bar is prevented from moving in translation relative to the carriage, and an unlocked state in which the bar is free to move in translation relative to the carriage.