Bearing structure and a floating vessel comprising such...

Details Bearing structure and a floating vessel comprising such... Bearing structure and a floating vessel comprising such...

E - Fixed Constructions

02

B

114/58.2

E02B 17/00 (2006.01) B63B 21/50 (2006.01) B63B 35/44 (2006.01) E21B 15/00 (2006.01) E21B 19/00 (2006.01)

Patent

CA 1278959

Abstract A bearing structure which may, for example, be used for rotatable mounting of a turret or a rig (11) on the hull (14) of a vessel com- prises a first annular bearing surface which is supported by the vessel hull (14), and which may be substantially plane or cylindrical. A second annular bearing surface which is in engagement with and supported by the first bearing surface is formed on the turret or rig (11). The hull (14) of the vessel is exposed to heavy forces caused by wind and waves, and such forces may cause deformations of the hull and consequently of said first bearing surface. In order to compensate for such deformations, the first bearing surface is divided into sections, and position control means, such as mechanical, pneu- matic, or hydraulic spring means, are provided for maintaining all of the bearing surface sections in abutting engagement with said second bearing surface formed on the turret or rig (11) . The said hydraulic spring means may be in the form of hydraulic cylinders or jacks to which hydraulic fluid is supplied at a pressure which is increased when the distance between the respective bearing surface section and the supporting part of the hull is decreased due to deformation of the hull, and vice versa.

512962

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