| 摘要 |
<p>A positioning apparatus for moving connection equipment on a drilling rig, the positioning apparatus comprises a piston and cylinder (151,152 figure 1A), a cylinder 601, a piston 607 and a piston rod 604. The piston 607 and piston rod 604 are moveable relative to the cylinder 601 from a retracted position to an extended position. The positioning apparatus further comprises a transfer barrier 620 linked to the piston and cylinder (151,152 figure 1A) for setting a maximum extension of the piston rod 607. A later embodiment relates to a method for positioning equipment using a positioning apparatus for connecting tubulars, comprising a deploy control device and an adjust control lever with an extend and an extend-to set position.</p> |
