Material or article handling – Well pipe or rod racking mechanism – With slope change
Patent
1980-08-29
1983-09-13
Paperner, Leslie J.
Material or article handling
Well pipe or rod racking mechanism
With slope change
269 32, 269 34, 269238, 294 86R, 294 88, 414739, 414741, 414745, E21B 1914
Patent
active
044038976
ABSTRACT:
A self-centering clamp for drilling tubulars includes first and second transverse guide rods. Two opposed clamping jaws are guided along the first guide rod. These jaws are positioned by two opposed rocker arms, each of which is mounted to a cross brace which slides along the second guide rod. The rocker arms are symmetrically positioned by a link mechanism which also slides along the second guide rod and by a hydraulic cylinder coupled between the two rocker arms. The entire clamp is supported in a frame onto which is mounted the two guide rods. The frame is pivotably mounted to a pipe boom so as to rotate about an axis parallel to the clamped pipe and transverse to the first and second guide rods. In a second embodiment the guide rods are replaced with a plate having guide slots.
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Paperner Leslie J.
Walker-Neer Manufacturing Co. Inc.
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