B - Operations – Transporting – 63 – B
Patent
B - Operations, Transporting
63
B
114/58.1
B63B 35/44 (2006.01) B63B 21/50 (2006.01)
Patent
CA 2017487
A bearing device for a turning means Abstract A device for supporting a turntable (1) on a vessel, especially a vessel for use in connection with drilling for and production of oil, which vessel is anchored to the sea floor, via the turntable (1). The turntable (1) comprises a horizontal circular flange portion (2) and a cylindrical portion (3) extending coaxially relative to the latter and downwards from the flange portion (2) into a vertical through hole (7) in the hull (6). Said device comprises bearing means (21, 22, 23, 24) which are connected with the vessel's hull (6) and comprise one or a plurality of bearing members (31, 34, 41, 46) adapted to bear against the respective bearing faces (11, 12, 13, 14) of the turntable flange portion (2). The bearing means permit relative rotation of the turntable (1) and the hull (6) about a substantially vertical axis. According to the invention first and second bearing means (21 and 22, respectively) are provided beneath the peripheral portion of the turntable flange and are designed to support turntable (1). The bearing member or members of the second bearing means are raisable and lowerable, so that the turntable (1) can be moved in a vertical direction between a first lowered position and a second raised position. In the first position, the turntable (1) is carried only by the first bearing means (21), and in the second position the turntable (1) is carried only by the second bearing means (22).
Golar-Nor Offshore A/s
Riches Mckenzie & Herbert Llp
LandOfFree
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