The invention provides a method for manufacturing an outer bottom plate of a bow of a large LNG ship under a high ice level. The manufacturing method comprises the following steps: step one, dividing outer plate segments; step two, removing original outer plate longitudinal bones on the third segment and the fourth segment, and manufacturing a computerized jig frame according to the line types of the third segment and the fourth segment; step three, installing transverse ribs: welding the transverse ribs on rib bit lines between the adjacent transverse rib plates on the third segment and the fourth segment; step four, installing outer plate longitudinal ribs, and arranging middle longitudinal girders on the third segment and the fourth segment in the direction of the outer plate longitudinal bones; step 5, folding the segments: adopting an inverse folding method, folding the first segment, the second segment, the third segment and the fourth segment, and then folding the outer plate segments and the ice blade longitudinal girders; step 6, welding the segments; and step 7, carrying out precision measurement, and finishing segmented manufacturing. An original outer plate longitudinal bone is omitted below an upper ice belt, and an aggregate structure is rearranged in the area to serve as a bow outer bottom plate ice area reinforcing area.
本发明提供一种高冰级下大型LNG船艏部外底板制造方法,包括以下步骤:步骤一、划分外板片段;步骤二、取消片段三、片段四上原有的外板纵骨;根据片段三、片段四的线型制作电算胎架;步骤三、安装横向肋骨;在片段三、片段四上,于相邻的横向肋板之间的肋位线上焊接横向肋骨;步骤四、安装外板纵骨;在片段三、片段四上,沿着外板纵骨的方向布置中间纵桁;步骤五、片段合拢;采用反态合拢的方法,先将片段一、片段二、片段三、片段四进行合拢,再合拢外板片段与冰刀纵桁;步骤六、片段焊接;步骤七、进行精度测量,分段制造即告完工。本发明在上冰带的下方,取消原有的外板纵骨,在该区域内重新布置骨材结构,作为艏部外底板冰区加强区域。
Method for manufacturing outer bottom plate of bow of large LNG ship under high ice level
一种高冰级下大型LNG船艏部外底板制造方法
2021-11-30
Patent
Elektronische Ressource
Chinesisch
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS |
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