公开(公告)号：US20110000682A1

公开(公告)日：2011-01-06

申请号：US12496205

申请日：2009-07-01

申请人： Charles Michael Webre ,  Brennan S. Domec ,  Vernon J. Bouligny, JR.

发明人： Charles Michael Webre ,  Brennan S. Domec ,  Vernon J. Bouligny, JR.

IPC分类号： E21B19/16 ,  E21B31/00

CPC分类号： E21B19/16

摘要： An internally gripping tong to rotate tubular segments comprising a central cam body rotatably disposed within a housing having a plurality of windows. The cam body is surrounded by a plurality of angularly distributed gripping jaws slidably received within the windows. The tong is disposed within a bore of a tubular segment, and rotation of the housing relative to the cam body deploys the gripping jaws radially outwardly within the windows to engage the interior wall of the tubular segment. The tong may be self-energizing in both the make-up and the break-out modes of operation. The tong may be deployed to grip the tubular segment using a device to frictionally couple the housing to the tubular segment that cooperates with the top drive assembly, or by an internal actuator that imparts rotation to the housing relative to the cam body.

摘要翻译： 一种用于旋转管状部分的内夹钳，包括可旋转地设置在具有多个窗口的壳体内的中心凸轮体。 凸轮体被可滑动地容纳在窗户内的多个角度分布的夹爪包围。 钳子设置在管状区段的孔内，并且壳体相对于凸轮体的旋转在窗口内径向向外展开夹紧爪以接合管状区段的内壁。 在化妆和爆发的运作模式中，钳子可能是自给自足的。 钳子可以被部署以使用装置将壳体摩擦地联接到与顶部驱动组件协作的管状区段或通过相对于凸轮本体赋予壳体旋转的内部致动器来夹持管状区段。