Elevating System of Jack Up Rigs

jacking-system-jack-up-rig

This article describes basic data with regard to the jack up rig elevation system, guides, pinion chord and leg fixation.

Jacking System

Firstly, let start with the jacking system , to lift and lower the hull, every Jack Up will have a special mechanism and the most basic of these is called ‘pin and hole’ (Figure 1); discrete leg positions will be used for the positioning of the hull. In the market today though, most Jack Ups will use a ‘rack and pinion’ (Figure 2) system to allow for continuous operation.

Figure 1 - Pin and Hole (Hercules offshore,2018)

Figure 1 – Pin and Hole (Hercules offshore,2018)

 

Figure 2 - Rack and Pinion

Figure 2 – Rack and Pinion (sagta.com,2018)

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