Apparatus for gripping a tubular member

Details Apparatus for gripping a tubular member Apparatus for gripping a tubular member

E - Fixed Constructions

21

B

E21B 19/16 (2006.01)

Patent

CA 2280946

An apparatus for gripping a tubular member (118) comprising a housing (101) having an opening (119) for receiving a tubular member (118), at least one passive jaw (102, 103) pivotally mounted on said housing (101) and pivotable between a first position in which said tubular member (118) can enter said apparatus (100) via said opening (119) and a second position in which exit of said tubular (118) from said apparatus (100) is inhibited, an arm (112, 113) displaceable to prevent said passive jaw (102) pivoting to its first position, an active jaw (115) displaceable into engagement with said tubular member (118), and means (114) which act between said active jaw (115) and said arm (112) so that, in use, when a tubular member (188) is in said apparatus (100) and said active jaw (115) is advanced towards said tubular member (118) said arm (112) is displaced to prevent said passive jaw (102) moving to its first position before said active jaw (115) engages said tubular (118).

L'invention concerne un appareil pour serrer un élément tubulaire (118). Ce dernier comprend un boîtier (101) présentant une ouverture (119) pour recevoir un élément tubulaire (118), au moins un mors passif (102, 103) fixé en vue de son pivotement sur ce boîtier (101) et pouvant pivoter entre une première position dans laquelle cet élément tubulaire (118) peut pénétrer dans cet appareil (100) via l'ouverture (119) et une deuxième position dans laquelle la sortie de cet élément tubulaire (118) est inhibée. Ce boîtier comporte également un bras (112, 113) pouvant être déplacé pour empêcher ce mors passif (102) de pivoter jusqu'à sa première position, un mors actif (115) pouvant être déplacé pour se mettre en prise avec l'élément tubulaire (118) et des moyens (114) qui agissent entre ce mors actif (115) et ce bras (112) de telle sorte que, en service, lorsqu'un élément tubulaire (118) est placé dans l'appareil (100) et que le mors actif (115) est avancé en direction de cet élément tubulaire (118), le bras (112) est déplacé pour empêcher le mors passif (102) de se déplacer vers sa première position avant la mise en prise du mors actif (115) avec l'élément tubulaire (118).

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