Drill bit fishing device of downthehole breaking of rod pole of pile foundation

The utility model provides a drill bit fishing device of downthehole breaking of rod pole of pile foundation for the salvage drill bit that drops, it is connected with drill bit drilling rod and tool joint on the drill bit to drop, drill bit fishing device of downthehole breaking of rod pole of pile...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	XIE YAPENG, YANG QINGHUA, WANG LIYONG
Format:	Patent
Sprache:	chi ; 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:	The utility model provides a drill bit fishing device of downthehole breaking of rod pole of pile foundation for the salvage drill bit that drops, it is connected with drill bit drilling rod and tool joint on the drill bit to drop, drill bit fishing device of downthehole breaking of rod pole of pile foundation includes: the jointed rod, the fisher claw is connected on the jointed rod. The utility model discloses a construction rig is connected the fishing device and is realized the drill bit salvage, need not provide other lifting device, salvage the salvage that efficiency is higher, the operation is more simple and convenient, can be applicable to the drill bit of the any gradient of drilling rod.