| 摘要 |
<p>A method for building structural members for ship hulls uses a movable gantry (1) for moving webs (17), intercostals (15) and stiffeners (19) from storage cassettes (20, 21, 22) to their respective positions on a supporting surface (16), where the elements are tack welded together. The webs (17) or intercostals (15) have slots (18) for the stiffeners (19), and during the assembly the stiffeners (19) are threaded through the slots (18) in the first web or intercostal. After tack welding the stiffeners thus mounted, the remaining webs or intercostals are threaded onto the stiffeners (19). These operations are made possible by the gantry having a manipulator unit (4) supported in a trolley (3) on the bridge (2) of the gantry, the manipulator unit having clamps (10) and supporting magnets (12) for the structural member elements (15, 17, 19), the gantry employing frequency regulated electrical gear motors and hydraulic proportional techniques to obtain the very precise movements necessary for the positioning and threading operations.</p> |
