JACK UP RIG AND ELEVATING DEVICE FOR JACK UP RIG

摘要

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 frame installed in the hull; a clamping member arranged on the frame to be apart, moving in a longitudinal direction of the leg; a fixing unit to selectively fixate the clamping member to the leg; and an expansion operation part installed between the frame and the clamping member to expand a gap between the frame and the clamping member.