JPS5945287A - Method of building double-bottomed block of ship - Google Patents

Abstract

PURPOSE:To efficiently carry out the building and assemblying of a double- bottom, by crossingly arranging girders and floors for a double-bottom, which are respectively formed with slits, so that a lattice structure is formed, and then by welding inner and outer plates onto the upper and lower surfaces of the thus formed lattice structure, respectively. CONSTITUTION:Girders 21 and floors 22 for a doulbe-bottom, which are formed with slits and stiffeners 23, are fitted together by means of the slits so that a lattice structure 9 is formed. Further, bottom lounges 26 and tank top lounges 27 are attached to the girders 21 and the floors 22 of the lattice structure 9. Then, an outer plate 32 and an inner plate 33 are welded to the upper and lower surfaces of the lattice structure 9. Thus, the time spent for the conveyance management and for shearing and working, to construct each double-bottom structure member may be shortened, thereby the building and assemblying of the double-bottom may be efficiently carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for constructing double bottom blocks for ships, more specifically,
This invention relates to a method for constructing a double-bottom block for a ship, in which an inner structural member consisting of a cargoo and a floor is arranged between an outer plate and an inner plate. .

In general, ships such as bulk carriers have a double bottom, and this double bottom consists of girders and floors connected in a lattice pattern to form an inner structure. The plates are welded to each other.More specifically, Figure 1 is a cross-sectional view of the ship's hull 1, deck 2, and both sides 4.
, 5 and a bottom 6. And bottom 6
is composed of an outer plate 7 and an inner plate 8, and an inner structural member 9 is arranged between the outer plate 7 and the inner plate 8. As shown in a partially enlarged view in FIG. 2, this inner structural member 9 is constructed by combining a large number of girders 10 extending in the longitudinal direction of the hull 1 and a large number of floors 11 extending in the transverse direction in a lattice shape. In addition, it is configured by arranging a large number of bottom lunges 12 and tank top lunges 13. Reference numeral 14 represents a stiffener serving as a strength portion.

By the way, when building a ship, such a double bottom is first constructed as a block, and an example of this is shown in Figure 3 (
No.j in which the board was cut as shown in a) to (e)
- A suitable number of stiffeners 14 are welded to the girder 1D and the floor 11 to form small blocks (Fig. 3(a)), and this girder 1
0 and the floor 11 are welded together, the bottom length 12 and the tank top length 13 are respectively joined to the floor 11 to form a medium flock (FIG. 3(b)).

Then, collect a plurality of such inner flocs on the soil of the outer panel 7 (Fig. 3 (C)) and weld each joint (Fig. 3 (d)).
There is a method of constructing a double bottom block by welding the inner plate 8 (FIG. 3(e)).

However, according to the construction method of such a 21n bottom block, the floor 11 is J-cut to make it relatively small.
Not only does it take time to process, but also
It takes time to align when joining the and girder 10,
In addition, welding also requires time.31 As a result, the number of construction steps increases, and there is also a risk that processing accuracy may be impaired.

The present invention has been made in view of the above-mentioned problems.The present invention has been made in view of the above-described problems. The inner structure 41 of the lattice structure is formed by inserting the slit portions of the other side into the respective slits of the girder and the floor to intersect with each other, and welding the intersecting portions of the other to form an inner structure 41 having a lattice structure. It is an object of this invention to provide a method for constructing a cock for a ship (double bottom) by welding an outer plate and an inner plate to the upper and lower surfaces of the material, respectively. An example of this will be described.

FIGS. 4(a) to 4(c) show, step by step, a method for constructing a double bottom block for a ship according to the present invention. .

First, the girder 21 and the floor 22 are formed by cutting a plate material, and an appropriate number of stiffeners 23 are attached to the girder 21 as shown in FIG. 5(a). A slit 25 is provided in which a slit portion 24 of a floor 22, which will be described later, can be inserted.

On the other hand, there is a box on the floor 22 as shown in Fig. 5(b).
-Muronji 26 and tank top longi 27wo + IDj
A suitable number of slits 30 into which the slits 29 provided in the girder 21 can be inserted are provided. 24 is a slit part 3 provided in the floor 22, and the slits 25 and 6o are slightly larger than the thickness of the girder 21 and the floor 22, respectively [j
j1 Specifically, the plates 7r of the girder 21 and the floor 22, respectively.
7 to have a width of 1 to 2 mm.

1 Garter 21 and floor 22 formed in this way
The slits 24 and 29 are respectively inserted into the slits 25 and 60 of the other side, and then the intersecting parts are welded, and the bottom longe 26 and tank dog longe 2 are then welded.
7 are inserted and fixed into the notches 28, respectively, to form the inner structural member 61 (FIG. 4(b)). Thereafter, the outer plate 32 and inner plate 33 are welded to the upper and lower surfaces of the inner structural member 61, respectively, to construct the double bottom block A (FIG. 4(C)).

As explained above, according to the double bottom block construction method according to the present invention, the girder 21 and the floor 22 are provided with slits and both are inserted into the slits respectively to be assembled. ■ Transportation and cutting time is reduced. It has many advantages, such as: (1) positioning of each joining point is easy, simplifying the joining work, saving labor through mechanization, and improving processing accuracy. .

Of course, the present invention is not limited to the embodiments described above, and it is obvious that changes can be made without departing from the spirit thereof.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view of the bulk carrier, Figure 2 is a partially enlarged perspective view of internal structural materials used in the double bottom, and Figures 3 (a) to (e) are conventional double bottom block construction methods. 4(a) to (C) are explanatory diagrams of the double bottom block construction method according to the present invention, and FIGS. 5(a) and 5(b) are illustrations of the girder and floor used in the present invention, respectively. Explanatory drawings 1...hull, 2...deck, 4, 5...ship side, 6...
...bottom, 7,62...outer plate, 8,66...inner plate,
9, 31... Internal structural material, 10, 21... Girder 11
1,22...floor, 12.26...bottom longi, 13,27...tank top longi, 14
．． 23... Stiffener, 24', 29... Slit l.
Part, 25, 30... Surin l~, 28... Notch part,
. Agent: Patent Attorney Fl. Ogawa, - Patent Attorney Ken Teru No. 11, Patent Attorney Kazuhiko Sai 1.

Claims (1)

[Claims] In a double bottom of a ship in which an internal structural member consisting of a girder and a floor is arranged between an outer panel and an inner panel, slits are formed in the girder and the floor, respectively, and slits are formed in each of the girder and the floor. Insert the slit parts of the other side facing each other so that they intersect and weld the intersecting parts to form an inner structural member with a lattice structure, and weld the outer plate and the disk to the top and bottom surfaces of the inner structural member, respectively. A double bottom block construction method for ships, characterized by: