Hydraulic drive in front of a drilling apparatus

A hydraulic drive for a drilling apparatus includes a hydraulic motor that drives a drill and is connected to a main pump via a first and a second working line in a closed hydraulic circuit. The main pump has a steplessly adjustable displacement volume that is adjustable by an actuating cylinder tha...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	Schuele, Hermann, Camurdan, Hakan, Schuette, Michael, Schill, Ulrich
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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A hydraulic drive for a drilling apparatus includes a hydraulic motor that drives a drill and is connected to a main pump via a first and a second working line in a closed hydraulic circuit. The main pump has a steplessly adjustable displacement volume that is adjustable by an actuating cylinder that is connected to a control valve, which has a first feed connector and a first return connector. The first feed connector is connected to an outlet connector of a pressure reducing valve such that the pressure at the feed connector is adjustable to a predefined setpoint pressure by means of the pressure reducing valve. The setpoint pressure is set in a manner which is dependent on a desired high pressure in the closed circuit.