Pre-assembly construction and turnover hoisting method for rudder horn block of large ship

Abstract

The invention discloses a pre-assembly construction and turnover hoisting method for a rudder horn block of a large ship. The pre-assembly construction and turnover hoisting method comprises the following steps: step 1, a block division method and a construction method for the rudder horn block: A1, a division method for the rudder horn block; A2, a segmented construction method of the rudder hornblock; A3, a block construction method of the rudder horn block; step 2, an inverse pre-assembly construction method; step 3, a pre-assembly turnover method: A1, the length direction of the pre-assembly is consistent with the length direction of a ship in a dock; A2, the ship length direction of the pre-assembly is perpendicular to the length direction of the ship in the dock. High-altitude operation of a lower deck and a lower structure is flattened, high-altitude positioning, assembling, welding and coating difficulties are avoided through flat ground operation, the safety risk is reduced,the total assembly operation efficiency is improved, a time period foundation is laid for rudder system boring operation after block completion, and the method is universal for various ship types, particularly for simultaneously building various large ships in large docks.

Description

Technical field[0001]The invention relates to the technical field related to the pre-general assembly construction of the rudder arm general section of a large ship, and specifically relates to a pre-general assembly construction and a rollover hoisting method for the rudder arm general section of a large ship.Background technique[0002]Usually, the rudder of a ship is located at the stern; the structure and machinery related to the rudder require high installation accuracy; the stern is the main deck (arrangement of deck machinery), steering gear deck (arrangement of steering gear machinery), and lower deck from top to bottom. , Outer plate; rudder arm, located on the center line of the hull, usually extending out of the hull to connect the rudder to the outer plate and lower deck, directly determining the installation accuracy between the steering gear machinery and the rudder; the rudder arm structure is the rudder system The key to the system is usually steel castings, which incr...

AI Technical Summary

Problems solved by technology

[0003] In the pre-assembly construction process of the general section of the rudder arm of the existing large-scale ship, it is basically a high-altitude positioning operation, and a large number of high-altitude support devices need to be built. It is difficult to assemble, weld, and paint, and it is impossible to avoid the difficulty of turning over in sections. Safety issues, and it can't solve the problem of turning over the general section of the irregular size of the pre-general group, it can't solve the problem of temporary shelving after the pre-general group is turned over, and it can't solve the problem of rotation after the pre-general group is turned over, whether it is temporary shelving or shelving after rotation, the process The special flower stand tooling and support of the company cannot be used in common with each other, and ultimately cannot be used in a variety of ship types, which is very inconvenient. Therefore, the pre-assembled construction and turn-over hoisting method of the general section of the rudder arm of a large ship is designed and produced here, in order to solve the above problems.

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