| 摘要 |
<p>Apparatus for lifting and/or moving operations of drilling equipment on a surface (40), comprising a suspension device with a lifting arm, wherein the lifting arm comprises at least a first polygon (10) and a second polygon (20) that can be connected to one another, the first polygon (10) comprising; a first beam (1) rotatably connected to a second beam (2); the second beam (2) is rotatably connected to a third beam (3); the third beam (3) is rotatably connected to a fourth beam (4); the fourth beam (4) is rotatably connected to the first beam (1).</p> |
