B - Operations – Transporting – 25 – B
Patent
B - Operations, Transporting
25
B
B25B 13/50 (2006.01) E21B 19/16 (2006.01)
Patent
CA 2236975
The powered backup tong assembly (10) includes a planar support plate (14), a pair of hydraulically powered cylinders (16, 18), a pair of link arms (20 22), and heads (24, 26, 30) for gripping engagement with the oilfield tubular. The powered backup tong frame includes an open throat (28) for laterally moving the power tong on and off the tubular member. A pair of rear ears (32, 34) each extending laterally outward from a centerline (12) of the plate (14) facilitate mounting the pair of hydraulically powered cylinders (16, 18) laterally outward of the support plate (14). The opposing heads (24, 26) are each pivotally connected to a respective pivot arm {20, 22) and the head (30) is mounted directly to support plate (14). The power tong is relatively simple and lightweight, and is highly reliable.
L'invention concerne un ensemble clé de dévissage hydraulique (10), qui comprend un plateau support plat (14), une paire de cylindres hydrauliques (16, 18), une paire de bras de manipulation (20, 22) ainsi que des têtes (24, 26 et 30) de préhension pour matériel tubulaire. Le châssis de la clé de dévissage hydraulique comporte une gorge ouverte (28) pour le déplacement latéral de la clé le long du matériel tubulaire. Une paire de lobes arrières (32, 34) qui s'étendent chacun latéralement à partir d'un axe central (12) du plateau (14) facilitent le montage des deux cylindres hydrauliques (16, 18), latéralement et à l'extérieur par rapport au plateau support (14). Chacune des têtes opposées (24, 26) est reliée de manière à pivoter sur un bras de pivot correspondant (20, 22), et la tête (30) est montée directement sur le plateau support (14). La clé de dévissage considérée est relativement simple et légère, et elle est très fiable.
Eckel Manufacturing Company Inc.
Finlayson & Singlehurst
LandOfFree
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