EP 3135853 B1 20200429 - COMBINED-TYPE DRIVING SLEEVE OF DRILLING RIG WITH RELIABLY FIXED DRAW KEY
Title (en)
COMBINED-TYPE DRIVING SLEEVE OF DRILLING RIG WITH RELIABLY FIXED DRAW KEY
Title (de)
KOMBINIERTE ANTRIEBSHÜLSE VON BOHRANLAGEN MIT SICHER BEFESTIGTEM ZIEHKEIL
Title (fr)
MANCHON D'ENTRAÎNEMENT DE TYPE COMBINÉ D'UN APPAREIL DE FORAGE AYANT UNE CLAVETTE MOBILE FIXÉE DE MANIÈRE FIABLE
Publication
Application
Priority
- CN 201410172013 A 20140425
- CN 2014094943 W 20141225
Abstract (en)
[origin: EP3135853A1] The invention disclose a combined driving sleeve of a drilling rig with a reliably fixed draw key, which comprises: a driving sleeve body (1), a draw key (2), a fixed stopper block (6), a movable stopper block (7), and bolts (8), the fixed stopper block (6) is fixed at one end of a groove of the driving sleeve body (1), while the movable stopper block (7) is fixed at the other end of the groove of the driving sleeve body (1) by means of a bolt (8), and the draw key (2) is fixed into the groove of the driving sleeve body (1) by means of the fixed stopper block (6) and the movable stopper block (7). The advantages thereof are: the draw key is reliably fixed and will not easily come loose; the method of mounting the draw key of the driving sleeve is simple and manufacturing costs are low; the operating space for replacing the draw key is large, and labor intensity is low; and the draw key is longitudinally symmetrical and can be inverted and interchanged.
IPC 8 full level
E21B 3/02 (2006.01); E02D 7/02 (2006.01); E02D 7/14 (2006.01); E21B 1/00 (2006.01); E21B 6/00 (2006.01); E21B 17/03 (2006.01)
CPC (source: EP US)
E02D 7/02 (2013.01 - EP); E02D 7/14 (2013.01 - EP); E21B 3/022 (2020.05 - EP US); E21B 17/03 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3135853 A1 20170301; EP 3135853 A4 20170705; EP 3135853 B1 20200429; CN 103924916 A 20140716; CN 103924916 B 20160824; WO 2015161664 A1 20151029
DOCDB simple family (application)
EP 14890225 A 20141225; CN 2014094943 W 20141225; CN 201410172013 A 20140425