Provided is a jack-up rig capable of allowing a separate device to fixate legs to be omitted by vertically moving the legs with less driving force and fixating the legs. The jack-up rig comprises: a hull; a plurality of legs installed in the hull to vertically move; and a lifting device installed in the hull to vertically move the legs. The lifting device includes: a worm rotated by power provided by an outer driving source, having a screw thread along a circumferential surface; worm gears arranged on a rotating shaft of the worm in an orthogonal direction having gears on a surface thereof to be engaged and rotated with the worm; and racks installed in a side surface of the legs in a longitudinal direction having gears engaged with the worm gears.

    보다 적은 구동력으로 레그를 승하강시킬 수 있고, 레그 승강과 더불어 레그의 고정이 이루어져, 레그 고정을 위한 별도의 장치가 필요없도록, 선체와, 선체에 상하로 이동가능하게 설치되는 복수개의 레그, 상기 선체에 설치되어 레그를 승하강시키는 승강장치를 포함하고, 상기 승강장치는 외부 구동원에 의해 제공되는 동력으로 회전하며 원주면을 따라 나사산이 형성된 웜과, 상기 웜의 회전축에 직각방향으로 배치되고 표면에 기어가 형성되어 상기 웜에 맞물려 회전하는 웜기어, 상기 레그의 측면에 길이방향을 따라 설치되고 표면에 상기 웜기어와 맞물리는 기어가 형성된 랙을 포함하는 잭업 리그를 제공한다.


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    Title :

    JACK UP RIG AND ELEVATING DEVICE FOR JACK UP RIG


    Additional title:

    잭업 리그와 잭업 리그의 승강 장치


    Contributors:

    Publication date :

    2015-07-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / E02B HYDRAULIC ENGINEERING , Wasserbau



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