RU2217343C2 - Method of assembly of ship hulls - Google Patents

Abstract

FIELD: shipbuilding and ship-repairing; assembly of ship hulls from parts coupled afloat. SUBSTANCE: parts of ship hulls are manufactured separately on slipway. Then, parts to be coupled are marked-out and allowance is cut off, after which units for coupling parts are mounted. Parts thus made are launched and are coupled afloat. The following operations shall be performed before marking-out edges of parts to be connected: determination of draft of part of hull, calculation of ballasting for obtaining similar draft, calculation of elastic lines of hull parts afloat and mounting dock shores in accordance with calculated elastic lines and ballasting. EFFECT: considerable reduction of impairment of relative orientation of parts after launching and coupling. 1 dwg

Description

 The invention relates to the technology of shipbuilding (ship repair) and for the assembly of the hull (floating structure) of individual blocks.

 There is a known method of assembling a ship’s hull (1), in which parts of the ship’s hull are made separately on the slipways, beds are placed in relation to each other with a trim, the allowance is cut and cut along the edges of the joined parts of the hull, installed in an assembly device and welded along joints and grooves.

 The disadvantage of this method is that it does not take into account deformation when dumping the vessel into the water and is not suitable for the assembly of large structures.

 There is a method of assembling a ship’s hull (2), in which parts of the hull are manufactured separately, outlined and cut off the allowance along the edges of the joined parts of the hull, devices and devices for docking are installed, the parts of the hull are lowered into the water and docked afloat.

 The specified method is closest to the claimed, therefore, adopted as a prototype.

 The disadvantage of the prototype is a change in the position of the elastic line of the ship afloat with respect to the elastic line on the slipway, which leads to an increase in stresses in the butt joint and a violation of the general orientation.

 The essence of the claimed technical solution lies in the fact that in the known method, in which parts of the ship’s hull are made separately on the slipways, they are drawn and cut off the allowance along the edges of the joined parts of the hull, devices and devices for docking are installed, the parts of the hull are lowered into the water and docked on afloat, before plotting the edges of the joined parts of the ship’s hull, the draft of each part of the hull is determined, the ballasting is calculated to bring about the same draft, the elastic lines of the her hull afloat, set dock supports in accordance with the calculated elastic lines of the hull parts afloat taking into account ballasting.

 A comparative analysis of the proposed technical solution with the prototype shows that the claimed technical solution has a number of features that do not coincide with the prototype, namely, before plotting the edges of the joined parts of the ship’s hull, the draft of each hull is determined, the ballasting is calculated to bring about the same draft, elastic lines of hull parts afloat, dock supports are installed in accordance with the calculated elastic lines of hull parts afloat, taking into account ballasting, which allows It is concluded according to the claimed invention the technical solution to the criterion "novelty".

 Comparison of the claimed invention with other technical solutions showed that bringing the elastic line of the vessel on the slipway in accordance with the elastic line afloat is widely used, for example, when centering the line of the shaft, however, in the claimed invention is determined not the elastic line of the vessel and not the elastic line of its separate part on floating, and the reduced elastic line, i.e. the elastic line of a single part, taking into account its ballasting. Thus, we can conclude that the claimed technical solution meets the criterion of "Inventive step".

 The drawing schematically shows parts of the hull on a slipway.

 The assembly of the ship’s hull (floating structure) is carried out as follows: after the formation of the hull parts on the slipway is completed, the draft of block 1 and block 2 is determined, the ballasting is calculated to bring the blocks to the same draft, the elastic line 3 of block 1 and the elastic line 4 of block 2 are calculated floating. According to the calculation results, the dock supports 5 of block 1 and the dock supports 6 of block 2 are moved until the elastic lines of each block occupy a position corresponding to their elastic lines afloat, or transplant to other dock supports installed in accordance with the calculation.

 After the elastic lines 3 and 4 are reduced to the calculated ones, they are drawn and the mounting allowance is cut along the edges of the blocks to be joined, devices and devices for docking are installed, then the blocks are separately lowered into the water and docked afloat.

 The inventive method significantly reduces the violation of the mutual orientation of the blocks after launching and docking, since the results of the relative positions of the body parts on the slipway and on the water practically do not change.

Sources of information
1. A.S. 1024352, MKI V 63 V 9/06.

 2. A.S. 1156953, MKI V 63 V 9/00.

Claims (1)

A method of assembling a ship’s hull, which consists in the fact that parts of the ship’s hull are made separately on the slipways, tracing and cutting off the allowance along the edges of the joined parts of the hull, installing devices and devices for docking, lowering the parts of the hull to the water and making them dock afloat, characterized in that before plotting the edges of the joined parts of the ship’s hull, the draft of each part of the hull is determined, the ballasting is calculated to bring them to the same draft, the elastic lines of the parts of the hull are calculated on the count is set dock support in accordance with the calculated elastic body pieces lines afloat with the ballast.