JPH06107275A - Construction of double bottom block for marine vessel - Google Patents

Abstract

PURPOSE:To construct double bottom for marine vessel easily and highly economicaly. CONSTITUTION:A floor plate 3 is partitioned into a bottom plate 1 side and a double bottom plate 4 side and after reinforcing lounge members 2, 5 are attached to the faces facing to the bottom plate 1 and the double bottom plate 4 respectively by welding, partitioned floor plates 13, 14 are attached to the bottom plate 1 and the bottom plate 4 respectively by welding. A joint plate 18 having a joint face in approximately parallel to the bottom plate 1 is welded so as to be attached to the upper end part 17 of the partition floor plates 13, 14 which are attached to the bottom plate and after that, the upper end parts 19 of the partition floor plates 13, 14 of the double bottom plate 4 are welded by butting against each other on the joint plate 18 so as to construct a double bottom block 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a double bottom block of a ship, and particularly when constructing a block in which a bottom plate which is the outermost shell and a double bottom plate which is the inner shell are integrated. It relates to a method that can facilitate the construction of the block.

[0002]

2. Description of the Related Art In general, in recent years, in order to enhance the safety of a ship, the bottom structure of the ship is composed of a bottom plate which is the outermost shell and a double bottom plate which is an inner shell at a predetermined distance from the bottom plate. The bottom has been adopted. As shown in FIG. 4, since the bottom plate 1 is the outermost shell of the hull, a relatively thick steel plate is used.
The bottom longe 2 is attached by welding for reinforcement along the vessel axis direction. In parallel with this, the bottom plate 1 is provided with a double bottom plate 4 which is an inner shell of the hull and is superposed at a constant interval. On the ship bottom side of the double bottom plate 4 facing the bottom plate 1, a double bottomed longe 5 for reinforcement is similarly attached by welding. In order to support the double-bottom plate 4 on the bottom plate 1, the bottom plate 1 and the double-bottom plate 4 are crossed at right angles to the bottom longe 2 and the double-bottomed longe 5 to form the floor plate 3. Is provided and the double bottom is mainly constructed. The double bottom protects the bottom of the ship from damage, and a tank is formed between the bottom plate 1 and the double bottom plate 4 in order to effectively use the gap between them. Is stored.

Conventionally, such a double-bottom structure is constructed as a double-bottom block 6 which is divided into a plurality of pieces in a factory or the like, and is assembled on a ship pedestal in terms of efficiency in a work process.
When actually constructing the double bottom block 6, as shown in FIGS. 5 and 6, the double bottom block 6 is further divided into a bottom plate block 7 and a double bottom plate block 8 and assembled. It will be completed by joining together. As shown in FIG. 5, in the bottom plate block 7, the bottom longes 2 as reinforcing members are mounted on the bottom plate 1 of a thick steel plate in parallel at regular intervals by fillet welding, and are orthogonal to the bottom longes 2. As described above, the floor plates 3 are formed in such a manner that the floor plates 3 are welded to each other in parallel at regular intervals by being fillet welded. As shown in FIG. 4, the floor plate 3 has a notch 9 cut in the shape of the longe 2 at the intersection of the bottom end 2 with the bottom longe 2 so that the longe 2 penetrates.
Have. Further, the floor plate 3 has a notch 10 cut in the shape of the longe 5 at the intersection of the upper end of the floor plate 3 and the double bottomed longe 5 in order to penetrate the longe 5. As shown in FIG. 5, a reinforcing rib 11 as a reinforcing member is attached to the floor plate 3 along the side surface connecting the cutouts 9 and 10 by fillet welding to assemble the bottom plate block 7. As shown in FIG. 6, apart from the bottom plate block 7, double bottom plates 4 as reinforcing members are attached to the double bottom plate 4 at regular intervals by fillet welding to form a double bottom plate. The block 8 is assembled. The inverted bottom plate block 7 is combined with the double bottom plate block 8. The double bottom plate 4 of the combined double bottom plate block 8 is butt-welded to the upper end 12 of the floor plate 3 of the bottom plate block 7 and double welded to the double bottom plate 4 of the double bottom plate block 8. The bottomed longe 5 is fillet-welded and squared to the upper end 12 of the floor plate 3 of the bottom plate block 7, whereby
The ship bottom block 15 and the double bottom block 16 are joined. Also, the inside and outside of the double bottom are painted to construct the double bottom block 6.

[0004]

However, in order to construct the double bottom block 6 by joining the above-mentioned bottom plate block 7 and the double bottom plate block 8 by welding, the bottom plate block 7 and the double bottom block 6 are constructed. After the block plate 8 and the block plate 8 are superposed and combined with each other, an operator enters into the double bottom between the bottom plate block 7 and the double bottom plate block 8 and these blocks 7, 8
Need to be joined by welding. This welding fillet welds the floor plate 3 to the double bottom plate 4 and
The double bottomed longe 5 is angled to the notch 10 of the floor plate 3. For this reason, the welding work in the double bottom is increased, the double bottom is narrow, and the floor plate 3 is notched in the shape of the double bottomed longe 5.
The welding work was complicated and difficult.

Further, after the bottom plate block 7 and the double bottom plate block 8 are welded and joined to each other, it is necessary to paint the inside of the double bottom. Since the inside of the double bottom is narrow, the ventilation is poor and the working environment is low. There was a problem that was worse.

Therefore, an object of the present invention is to solve the above-mentioned problems and to provide a method for constructing a double bottom of a ship, by which the double bottom of the ship can be easily constructed with improved working efficiency. .

[0007]

In order to achieve the above object, the present invention provides a floor plate between two bottom plates, which are outermost shells of a ship, so that a double bottom plate is superposed on the bottom plate at a predetermined interval. In a method of constructing a double bottom block of a ship, which is connected to each other via, the floor plate is divided into a bottom plate side and a double bottom plate side, and the bottom plate and the double bottom plate are After the reinforcing longe members are welded and attached to the facing surfaces, the divided floor plates divided are welded and attached to the bottom plate and the double bottom plate, respectively, and the divided floor attached to the bottom plate. Weld a joint plate that has a joint surface that is substantially parallel to the bottom plate to the upper end of the plate and attach it. A method for constructing a double bottom block of a ship, characterized in that the upper ends of the divided floor plates of the double bottom plate are butted against each other and welded to each other to construct a double bottom block. It is a thing.

[0008]

[Function] Since the floor plate is divided into the bottom plate side and the double bottom plate side, and the floor plates divided into the facing surfaces of the bottom plate side and the double bottom plate side are attached by welding, the floor plate is attached. Also, welding work such as cornering of the longes can be divided into the bottom plate side and the double bottom plate side and all can be performed by downward welding.

[0009] The bottom plate side block and the double bottom side block can be simply formed by welding the upper end of the divided floor plate attached to the double bottom plate side by welding downward to the joint plate attached to the bottom plate side. Can be joined. Further, the joint plate is attached in parallel to the bottom plate, and automatic welding can be performed by running an automatic welding machine or the like along the joint plate.

[0010]

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

Similar to the conventional example, a double bottom block of a ship is constructed by being divided into a plurality of double bottom blocks so that the hull has a constant area. In the present invention, the double bottom block 6 is provided with the floor plate 3 as shown in FIG. The double bottom block 6 is divided into an upper floor plate 13 and a lower floor plate 14 by dividing the floor plate 3 into upper and lower parts.
5 and a double bottom block 16. In constructing the double bottom block 6, as shown in FIG. 2, bottom longes 2 which are reinforcing members in the longitudinal direction of the hull are attached on the bottom plate 1 at regular intervals by fillet welding. Lower floor plates 14 are provided in parallel with each other so as to intersect each other at a right angle and at a constant interval. A notch 9 is provided in the shape of the bottom longe 2 at the intersection of the lower floor plate 14 with the bottom longe 2. The bottom longe 2 is angled by fillet welding to the notch 9 of the lower floor plate 14. Reinforcing ribs 11, which are reinforcing members, are attached to the floor plate 14 by fillet welding on the side surfaces of the cutout portion 9 and the lower floor plate 14 at the upper ends thereof. A joint plate 18, which is supported by the lower floor plate 14 and the reinforcing ribs 11 and has a joint surface substantially parallel to the bottom plate 1, is a bottom block 1 of the ship.
The bottom block 15 is assembled and welded by being attached to the upper end portion 17 of the lower floor plate 14 of No. 5 by welding. After this, the ship bottom block 15 is painted and finished.

Further, as shown in FIG. 3, in addition to the block 15 on the ship bottom side, a double bottomed longe 5 as a reinforcing member is mounted on the double bottom plate 4 at regular intervals by fillet welding. The upper floor plates 13 are provided in parallel in parallel with each other so as to intersect the double bottomed longitudinal 5 at right angles. A notch 10 is formed in the shape of the double bottomed longe 5 at the intersection of the upper floor plate 13 and the double bottomed longe 5. The double bottomed longe 5 is angled by fillet welding to the notch 10 of the upper floor plate 13. A reinforcing rib 11 which is a reinforcing member is attached to the double bottom side block 16 by fillet welding on the side surface that joins the notch 10 and the upper end of the upper floor plate 13 to form a double bottom plate. 16 will be assembled and welded. After this, the double bottom block 16 is painted and finished.

This double bottom side block 16 is inverted,
It is combined with the ship bottom block 15. The upper end 19 of the upper floor plate 13 of the combined double bottom block 16 and the upper end 20 of the reinforcing rib 11 are joined to the joint plate 18 of the bottom block 15 by butt welding and fillet welding by downward welding. After that, the double bottom block 6 is constructed by painting.

Next, the operation of the embodiment will be described.

By dividing the floor plate 3 in the double bottom block 6 into the bottom plate 1 side and the double bottom plate 4 side, the double bottom block 6 is divided into a ship bottom side block 15 and a double bottom side block 16. Will be divided. In the double bottom side block 16, all the complicated welding work such as cornering by the fillet welding of the double bottomed longe 5 to the cutout portion 10 of the upper floor plate 13 can also be performed by downward welding, and The painting work on the inside and outside of the bottom can also be performed separately for each of the blocks 15 and 16. As a result, the blocks 15 and 16 are separately assembled, welded, and painted. In order to weld and join the ship bottom block 15 and the double bottom block 16, the ship floor block 15 and the double bottom block 16 are combined, and the upper floor plate 1 attached to the double bottom block 16 is joined.
The double bottom block 6 can be completed simply by butt-welding 3 to the joint plate 18 attached to the bottom block 15 in a downward direction and coating the joint plate 18. Since the joint plate 18 is mounted in parallel with the bottom plate 1, automatic welding can be performed by running an automatic welding machine or the like along the joint plate.

As an example, the floor plates 3 are provided near both ends of the double bottom block 6 respectively, and
An example is conceivable in which another floor plate 3 is sandwiched between these floor plates 3 and provided in the central portion. In this embodiment, as in the previous embodiment, the floor plate 3 is vertically divided into two parts, that is, an upper floor plate 13 and a lower floor plate 14, and a joint plate 18 is provided at an upper end portion of the lower floor plate 14. Once provided, this joint plate 18 is butt welded and joined to the upper floor plate 13 to build the double bottom block 6. In this welding of the joint plate 18, the floor plates 3 at both ends are welded from the outside, and the floor plate 3 in the center is welded by an operator entering through the opening.
The double bottom block 6 can be completed simply by welding and painting the upper floor plate 13.

[0017]

In summary, according to the present invention, the following excellent effects are exhibited.

(1) The double bottom block can be divided into a ship bottom block and a double bottom block by vertically dividing the floor plate into two parts, and all the welding work is downward welding. Therefore, it is possible to easily assemble, weld and paint by dividing a complicated work for each of these two blocks. As a result, the construction of the double bottom is facilitated and the work efficiency can be improved.

(2) In order to weld and join the ship bottom block and the double bottom block, it suffices to butt-weld the upper floor plate downward to the joint plate from the outside of these blocks, and paint. The construction of the heavy bottom becomes easy and the work efficiency can be improved.

(3) Since it is possible to reduce the work to enter the double bottom portion, the working environment can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing an embodiment of the present invention.

FIG. 3 is a perspective view showing an embodiment of the present invention.

FIG. 4 is a perspective view showing a conventional example.

FIG. 5 is a perspective view showing a conventional example.

FIG. 6 is a perspective view showing a conventional example.

[Explanation of symbols]

 1 bottom plate 2 bottom longe 3 floor plate 4 double bottom plate 5 double bottom longe 6 double bottom block 7 bottom plate side block 8 double bottom side plate block 9,10 notch 11 reinforcement rib 12 upper end of floor plate 13 Upper floor plate 14 Lower floor plate 15 Ship bottom block 16 Double bottom block 17 Upper end of lower floor plate 18 Joint plate 19 Upper end of upper floor plate 20 Upper end of reinforcing rib

Claims (1)

[Claims] 1. A double bottom block for a ship, in which a bottom plate, which is the outermost shell of the ship, is overlapped with a double bottom plate with a predetermined space therebetween, and a floor plate is interposed between them to connect them to each other. In the construction method of, after the floor plate is divided into a bottom plate side and a double bottom plate side and the bottom plate and the double bottom plate are respectively welded and attached with reinforcing longe members on their facing surfaces, A joint having the divided divided floor plates attached to each of the bottom plate and the double bottom plate by welding and having a joint surface substantially parallel to the bottom plate at the upper end of the divided floor plate attached to the bottom plate. The plate is welded and attached, then the upper end of the split floor plate of the double bottom plate above the joint plate A method for constructing a double bottom block of a ship, characterized in that the parts are butted and welded to each other to construct a double bottom block.