AUXILIARY DEVICE FOR SUPPORTING LOAD OF JACK-UP TYPE OFFSHORE WORKING PLATFORM

摘要

PURPOSE:To strongly hold the piers of a jack-up type offshore working platform against external forces by a method in which one of two oil chambers partitioned by a piston is connected to the oil chamber of a cylinder with a pin coupled with a rack and the other is connected to the oil chamber of a plug-type gas accumulator. CONSTITUTION:To use an auxiliary device 9 for a jack-up type offshore working platform 14, an air cylinder 17 is extended, a pin 14 is allowed to come near a rack 3, an oil pressure is applied to a cylinder 10 through a stop valve 34 and a tube 29, and the pin 14 is coupled with the rack 3. During no-load operation, the piston 23 positioned at the upper end of the oil chamber 26 is lowered by the pressure of the oil chamber 28, oil flows from the oil chamber 24 to the oil chamber 21, and loads on the oil chamber 28 and the plug 20 are equilibrated. Since the variation in the load of the oil-pressure cylinder 10 results in the variation of the pressures of the plug 20, high compression spring constant of working oil is eased by low spring constant of the plug, and during the storm period, no separation of the pin 14 from the rack 14 occurs and also no breakage takes place even during peak-load operation.