A method for installing super high and super large floating cranes in dock

Abstract

The invention discloses a method for installing an ultrahigh ultra-large type floating crane in a dock. The method comprises the steps that a hull is adjusted to be horizontal, the center line of a deck of the hull is drawn on the deck surface, a propeller strut pull rod center line, a propeller strut press rod center line, an arm frame bracket front and rear landing leg center line and center lines of a jib lubbing mechanism, a main and auxiliary hook lifting mechanism and a main and auxiliary hook rigging hook mechanism are drawn on the basis of the the center line drawn on the deck surface, reinspection is conducted after drawing is conducted, and general assembly is conducted by hoisting a rear section assembly, a middle section assembly and a front section assembly of an arm frame through a portal crane according to center line installation parts. Closure of hull sections in the dock is conducted according to the installation sequence of crane parts, when the hull is closed, all large structural parts of the crane are hoisted through the portal crane of the dock, threading of steel wire ropes of all pulley systems is completed before the hull is put in water, idle load and heavy load adjustment of a floating crane can be conducted after a ship is in the water, the hoisting capacity of the portal crane on the dock is fully exerted, and the general building period of the floating crane is greatly shortened.

Description

technical field [0001] The invention relates to a method for installing a super-high and super-large floating crane in a shipyard. Background technique [0002] Research on super-high floating cranes for offshore installation and construction of marine engineering, such as deep-sea semi-submersible platforms, towering legs of jack-up drilling platforms, drilling derricks and other offshore marine engineering equipment maintenance, dismantling and installation, overall hoisting of offshore wind power, etc. This project is proposed and researched under such a background, super-lifting height, large lifting capacity, large working range, four-hook large-plane multi-hanging points, special main and auxiliary jib frames, used for offshore engineering manufacturing, installation and maintenance Technical research, design and manufacture of special crane vessels; research and development, design and manufacture of a new generation of ultra-large floating cranes with stronger capabi...

AI Technical Summary

Problems solved by technology

[0008] (1) The company does not have a shoreline suitable for the construction of floating cranes, so it cannot use large floating cranes to hoist large crane components such as herringbone frames and jibs, and can only use 900t gantry cranes on the dock

[0009] (2) The lifting capacity of the 900t gantry crane cannot meet the overall hoisting of the herringbone frame, boom bracket and main boom frame

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