FIELD: mining industry. SUBSTANCE: locking joint of hollow drilling string has interacting components of coupling in the form of protrusions and slots located on sleeve and nipple of pipe ends being connected. Freely mounted on sleeve is nut with outer connecting members for tongs. Slots of sleeve are through-type for receiving nipple protrusions. Outer surface of protrusions is threaded for interaction with nut thread. Connecting members of nut are located in zone of its thread. EFFECT: high efficiency. 6 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| LOCK CONNECTION OF HOLLOW BORING FLIGHTS | 2002 |
|
RU2224870C1 |
| TOOL JOINT OF HOLLOW DRILL RODS | 1999 |
|
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| DRILL PIPE JOINT | 2002 |
|
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RU2354799C1 |
| ADAPTER FOR PASSING LOGGING CABLE FROM DRILL STRING-BOREHOLE ANNULUS TO INSIDE OF DRILL STRING | 1987 |
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| FLUSH JOINT OF DRILLING RODS | 2009 |
|
RU2403370C1 |
| DRILL PIPE STRING | 0 |
|
SU1434069A1 |
| DRILLING RIG SWIVEL | 0 |
|
SU1504321A1 |
