Telescoping jack for a gripper assembly

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 19/14 (2006.01)

Patent

CA 2741693

A pipe handling apparatus (10) has a base (214), a main rotating structural member (16) pivotally connected to the base (214), a pipe handler (218) connected to the main rotating structural member (214) for moving a pipe (18) from a generally horizontal orientation to a vertical orientation, and a jack (200) connected to the pipe handler (218). The jack (200) exerts a downward force in generally parallel relation to the pipe when the pipe is in the vertical orientation. The pipe handler (218) has a gripping structure (26) for gripping an outer surface of the pipe. The gripping structure (26) has a stab frame (28). The jack (200) is affixed to the stab frame (28). The jack (200) has a piston-and-cylinder assembly positioned relative to the stab frame, and a hydraulic actuator (212) connected to the piston-and-cylinder assembly. The hy-draulic actuator (212) is suitable for passing hydraulic fluid to the piston-and-cylinder assembly so as to move the piston-and-cylinder assembly from a retracted position to an extended position.

La présente invention concerne un appareil de manipulation de tuyau (10) ayant une base (214), un élément structurel (16) tournant principal relié de façon pivotante à la base (214), un pince-tuyau (218) relié à l'élément structurel (214) tournant principal pour déplacer un tuyau (18) d'une orientation généralement horizontale à une orientation verticale, et un cric (200) relié au pince-tuyau (218). Le cric (200) exerce une force vers le bas en relation généralement parallèle avec le tuyau lorsque le tuyau est dans l'orientation verticale. Le pince-tuyau (218) a une structure de préhension (26) pour agripper une surface extérieure du tuyau. La structure de préhension (26) comporte un cadre (28). Le cric (200) est collé au cadre (28). Le cric (200) comporte un ensemble piston et vérin positionné par rapport au cadre, et un actionneur hydraulique (212) relié à l'ensemble piston et vérin. L'actionneur hydraulique (212) est adapté pour passer le liquide hydraulique à l'ensemble piston et vérin de façon à déplacer l'ensemble piston et vérin d'une position rétractée à une position déployée.

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