LOCKING JOINT OF HOLLOW DRILLING STRINGS

摘要

FIELD: borehole drilling facilities. SUBSTANCE: locking joint has interacting engagement components such as protrusions and recesses located on sleeve and nipple of tube ends being connected. Freely installed on sleeve is nut with outside mounting elements for wrench. Sleeve slots are through-type for location of nipple protrusion in them. Outside surface of protrusions is threaded for interaction with nut thread. Mounting elements of nut are located in zone of its thread. EFFECT: high efficiency. 6 dwg