JPS60154980A - Construction of ship - Google Patents

Abstract

PURPOSE:To reduce the whole construction term of a hull by constructing the upper part of a bow from three blocks including a deck and outer plates and forming a bow block including a chain locker by joining each block and joining said block onto a hull part after the installation of fittings. CONSTITUTION:The upper part of a bow is constituted of three blocks of a front-part small block 11, rear-part small block 12, and a lower-part small block 13. The front-part small block 11 is constituted of a forecastle deck 14 and an outer plate 16 having a pipe-hose opening 15, and the rear-part small block 12 is constituted of a forecastle deck 18 onto which the upper part of a chain locker 16 is fixed and an outer plate 19, and the lower-part small block 13 is constituted of an upper deck 20 onto which the lower part of the chain locker 16 is fixed and an outer plate 21. Each small block 11-13 is joined, and after the necessary fittings are installed, the blocks are mounted and joined onto the hull part under construction on a ship building birth. Therefore, the whole construction term of the hull can be reduced.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a ship construction method, and more particularly, to an improvement in a ship construction method that enables efficient block construction of the upper part of the bow in a ship block construction method. It is.

[Prior art]

Generally, when building a ship, a so-called block construction method is adopted in which a plurality of parts are welded together to form a block, the block is transported by a crane into a dock or onto a ship's dock, and each block is welded.

Recently, in this block construction method, a pre-refining method has been adopted in which various artificial accessories such as pipes and electric wires are laid in advance in each block, in order to shorten the construction period and improve precision. , has not yet fully achieved its purpose. One of them is the upper bow block. That is, the upper part of the bow is composed of a forecastle deck 1, an upper deck 2, and an outer panel 3, as shown in FIG.

On the forecastle deck 1, various equipment such as an anchor chain winding winch 4 and a mooring device 5 are arranged, and inside thereof a chain locker 6 that passes through the upper deck 2 and a large number of aggregates (not shown) are installed. There is.

By the way, if the bow section of such a structure is constructed with only the hull as a block, ■ When a refined product is installed on top of the forecastle deck 1, the welding heat will burn out the paint film on the back of the deck.In order to repair this, Installation and removal of scaffolding is required, which takes a long time.■ The bow section is installed on the ship at a relatively late stage.Then, various fittings, especially the mooring equipment, are installed, operational tests and chain windings are carried out. There were problems such as a long construction period in the dock or on the platform due to the water being washed away.

[Purpose of the invention]

The present invention has been developed in view of these points, and aims to shorten the ship construction period by performing preliminary refining during the construction of the bow block.

[Structure of the invention]

That is, in the present invention, the upper part of the bow is constructed as a plurality of small blocks consisting of a deck and an outer plate, the plurality of small blocks are combined to form a bow block having at least a chain locker, and a structure is installed on the bow block deck. This is characterized by the fact that after the block is installed, it is transferred to the dock or to the ship's dock using a crane, and then joined to other blocks.

〔Example〕

An embodiment of the ship construction method according to the present invention will be described below with reference to FIGS. 2 to 5.

In FIG. 2 fat to tc+, 11 is a front small block, 12 is a rear small block, and 13 is a lower small block.

The front small block 11 is composed of a front forecastle deck 14, an outer plate 16 having a vibe bore hole 15, and a front moon (not shown).

The aft small block 12 is made up of the aft forecastle deck 18 to which the upper part of the chain locker 6 is fixed, the outer plate 19, and aggregate, and the lower small block 13 is made by the upper deck 20 to which the lower part of the chain locker 6 is fixed, and the outer part. It is composed of a plate 21 and aggregate.

For each of these small blocks 11, 12 and 13, after the decks 14, 18 and 20 are placed on the surface plate, the outer panels 16, 19 and 21 are attached and necessary piping and wiring are done. The small blocks 11, 12 and I3 are then reversely joined to form the upper bow block 22 shown in FIG. 3. In this state, various accessories such as mooring machines and winches were installed (Figure 4), the back of the forecastle deck l was painted, and tests were carried out on the various accessories. It is mounted on the hull A by a crane (not shown) (Fig. 5).

〔Effect of the invention〕

As described above, according to the ship construction method according to the present invention, the upper bow block can be constructed on the ground, and preliminary refining and operation tests of time accessories can be performed on the ground.
This eliminates the work of installing and removing scaffolding, and also simplifies operation tests, making it possible to significantly shorten the construction period. In particular, since it can be carried out in parallel with the construction of the hull in the dock or on the dock, the construction period in the dock or on the dock can be shortened, and as a result, it has the great effect of improving the turnover rate of the dock or dock.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the structure of the upper part of the bow part, and FIGS. 2 to 5 are explanatory process diagrams showing an embodiment of the ship construction method according to the present invention. l...Forecastle deck, 2.20...Upper deck, 3.16
．． 19.21... Outer plate, 4... Winch, 5...
Mooring device, 6... Chain locker, 11... Front small block, 12... Rear small block, 13... Lower small block, 14... Forecastle deck, 15... Hose Pipe hole, 18...Aft forecastle deck, 22 deck upper bow block. Agent Patent Attorney Makoto Ogawa − Patent Attorney Ken Noguchi Teru Patent Attorney Kazuhiko Saishita Figure 2 14 No. 7 ＼

Claims (1)

[Claims] The upper part of the bow is constructed as a plurality of small blocks consisting of a deck and an outer plating, and the plurality of small blocks are combined to form a bow block with at least a chain locker, and the refined product is installed on the bow block deck before being craned. A ship construction method characterized by transporting blocks into a dock or onto a dock and joining them with other blocks.