PREVENTER FOR OVERLOAD TO RACK-AND-PINION TYPE ELEVATOR OF MARINE STRUCTURE

摘要

An overload prevention apparatus for a jacking system of a rack and pinion type for use in offshore structures is disclosed. Each of the pinions is provided with a torque meter and tachometer for detecting a relative position between the pinion and the rack. The information detected by the torque meter and the tachometer are respectively fed to a computer the output of which is supplied to an adjust unit for equalizing the load on the jacking system.