Non-excavation power head protective pup joint

The utility model relates to a non-excavation power head protective pup joint. According to the technical scheme, the non-excavation power head protective pup joint comprises a power head protective pup joint, wherein internal threads and external threads are machined at the left end and the right e...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	WANG ZHIQIANG, WANG ZHIGUO, LI SHANCHUN, WANG XINGUO, LI RUIQING, DU LIN, DU GUANGLIANG
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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The utility model relates to a non-excavation power head protective pup joint. According to the technical scheme, the non-excavation power head protective pup joint comprises a power head protective pup joint, wherein internal threads and external threads are machined at the left end and the right end of the power head protective pup joint by the conventional method; the depths of each crest, lateral surface and surface hardening area of a thread profile are 0.1 to 1.5 millimeters, and the hardness is 45 to 63 Rockwell hardness (HRC); and the external threads of the power head protective pup joint are connected with the internal threads of a drill stem joint. Compared with the prior art, the non-excavation power head protective pup joint has the advantages of avoiding the phenomenon of thread gluing, prolonging the service life of a power head, along with high abrasive resistance; and the non-excavation power head protective pup joint is low in cost, convenient to operate and high in repeated utilization rate