JP3693662B2 - Assembling method of tanker bilge hopper and corrugated bulkhead - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in a method of assembling a corrugated partition block to a swash plate block when assembling a tanker in a block form, and more particularly to the corrugated plate of a swash plate block in which a corrugated plate piece having a predetermined shape is assembled to a bilge hopper swash plate. The present invention relates to a method of assembling a bilge hopper portion of a tanker and a corrugated partition wall in which a corrugated partition block formed in a shape matching the shape of the corrugated plate piece is fixed to the strip.
[0002]
[Prior art]
In general, this type of tanker divides the hold vertically and horizontally by corrugated bulkheads to form a plurality of tanks. As is well known, a tanker having such a structure has a bow or stern cross-sectional structure that is narrower than a cross-sectional structure near the center of the ship.
[0003]
FIG. 3 is a view showing a conventional structure in which a corrugated bulkhead is mounted on a bilge hopper portion where the cross-sectional area of the ship is thin like the bow side or the stern side, and FIG. FIG. 3 and FIG. 3B are views of the corrugated partition wall as viewed from above. In FIG. 3, the attached code P indicates starboard, and the attached code S indicates port, and each code, for example, code I, code II, code III, IV, represents the bilge hopper, corrugated partition wall, and the like. This shows the assembly order.
[0004]
A conventional assembling method in which a corrugated bulkhead is mounted on a bilge hopper, which is a portion where the cross-sectional area of the ship is thin like the bow side or the stern side of the conventional tanker 1, is basically shown in FIG. As shown, double bottom plate assembly step I, port swash plate assembly step IIP, starboard swash plate assembly step IIS, port boat side skin plate assembly step IIIP, starboard boat side skin plate assembly step IIIS, and corrugated bulkhead assembly step IV.
[0005]
Further, as shown in FIG. 3A, the tanker 1 assembled by such a method has a ship side outer plate 3S, 3P and a double ship side longitudinal passage provided inside the ship side outer plates 3S, 3P, respectively. Bulkheads 5S and 5P, a tank top 7 provided on the bottom side of the ship, a ship bottom skin 9 provided on the outside of the bottom of the tank top 7, bilge skins 11S and 11P, and bilge hopper swash plates 13S and 13P And a corrugated partition wall 15. Reference numerals 17P and 17S are corrugated vertical plates, and 19 is a trunk.
[0006]
Here, in the double bottom plate assembling step I, the ship bottom outer plate 9, the tank top 7, the ship bottom cross member (not shown) for fixing them, and the reinforcing material (not shown) are shown in FIG. ).
By the port swash plate assembly step IIPP, the bilge outer plate 11P, the bilge hopper swash plate 13P, and a cross member and a reinforcing member (not shown) are configured as shown in FIG. Similarly, in the starboard swash plate assembly process IIS, the bilge outer plate 11S, the bilge hopper swash plate 13S, and a cross member and a reinforcing material (not shown) are configured as shown in FIG.
[0007]
By the portside side plate assembly step IIIP, the ship side plate 3P, the double ship side longitudinal partition wall 5P, the corrugated vertical plate piece 17P fixed inside the double ship side longitudinal partition wall 5P, The reinforcing material is configured as shown in FIG. Similarly, by the starboard ship side skin assembly step IIIS, the ship side skin 3S, the double ship side longitudinal bulkhead 5S, and the corrugated vertical plate piece 17S fixed inside the double ship side longitudinal bulkhead 5S are not shown. The cross member and the reinforcing member are configured as shown in FIG.
Further, the corrugated partition 15 is formed in a predetermined shape as shown in FIG. 3A by the corrugated partition assembly step IV.
[0008]
A method for assembling the above structure will be described with reference to FIG. First, the double bottom plate assembly process I is performed on the board 4 fixed on the dock 2.
Next, the port swash plate assembly backward IIP and the starboard swash plate assembly step IIS are welded as shown in FIG. The left swash plate assembly process IIP and the right swash plate assembly process IIS are both performed at the same time or after one swash plate block is welded and the other swash plate block is welded. It may be.
[0009]
Further, the port swash plate assembling step IIP, the port side siding plate assembling step IIIP, the starboard swash plate assembling step IIS, and the starboard side siding plate assembling step IIIS are respectively welded as shown in FIG.
Finally, as shown in FIG. 3A, the corrugated partition assembling step IV is lowered from the upper side of the drawing and fixed by welding as follows. That is, the joint portion of the corrugated partition wall 15 and the joint portion of the tank top 7 are fixed by welding. The joint portion of the corrugated partition 15 and the joint portion of the port bilge hopper swash plate 13P are fixed by welding. Further, the joint portion of the corrugated partition wall 15 and the joint portion of the starboard bilge hopper swash plate 13S are fixed by welding. Further, the joint portion of the corrugated bulkhead 15 and the joint portion of the corrugated vertical plate piece 17P on the port side are welded and fixed. Similarly, the joint part of the corrugated partition 15 and the joint part of the corrugated vertical plate piece 17S on the starboard side are welded and fixed.
[0010]
In the conventional method of assembling the bilge hopper portion and corrugated partition wall of a tanker, as shown in FIG. 3 (a), the double bottom plate assembling step I, the left swash plate assembling step IIP (and the right heel oblique) Plate assembly process IIS) and port ship side skin plate assembly process IIIP (and starboard ship side skin plate assembly process IIIS), and the cross-sectional structure is narrower than the cross-sectional structure near the center of the ship. In addition, the corrugated partition wall 15 is inserted and arranged, and as shown in FIG. 4, the base portion is mounted on the bilge hopper swash plate 13P (13S). 1 is also disclosed in the prior art section).
[0011]
FIG. 4 is an enlarged view showing a part of the conventional structure described above, which is a part of a corrugated partition block, a part of a port swash plate block, and a part of a double bottom plate block. is there.
[Patent Document 1]
Japanese Utility Model Publication Showa 60-9791, description of prior art [0012]
[Problems to be solved by the invention]
The above-described conventional method for assembling the bilge hopper of the tanker and the corrugated bulkhead has the following disadvantages.
[0013]
(1) Since the base of the corrugated partition wall 15 that receives high stress (the side where the bilge hopper swash plates 13P and 13S are joined) is in contact, the inside of the corrugated partition wall 15 and the bilge hopper swash plates 13P and 13S In spite of the necessity to make it coincide with the reinforcing member of the above, it has been inconvenient that it is difficult to join it with high accuracy.
[0014]
(2) Further, the corrugated partition used in the method of assembling the conventional tanker bilge hopper and corrugated partition is the corrugated partition 15 having a large shape, so that the corrugated abutment against the bilge hopper swash plates 13S and 13S. There is an inconvenience that it is very difficult to set the angle α of the slope portion of the base portion of the partition wall 15.
(3) In addition to the structural inconvenience described in (2) above, the narrow part between the bilge hopper swash plates 13P and 13S and the corrugated partition wall 15 must be joined and welded obliquely. In addition, the weld bead is not sufficiently welded and the condition is poor, and it is difficult to form a bead shape resistant to stress, and there is a disadvantage that welding defects are likely to occur.
[0015]
(4) As a result, there is a problem that cracks are generated from the welded joints between the bilge hopper swash plates 13P and 13S and the corners of the corrugated partition wall 15.
The present invention eliminates the above-mentioned inconveniences, and in the bilge hopper part, the bilge hopper part and corrugated partition wall of the tanker capable of preventing the occurrence of cracks from the joint part between the swash plate of the bilge hopper part and the corner part of the corrugated partition wall, An object of the present invention is to provide an assembly method.
[0016]
[Means for Solving the Problems]
In order to achieve the above object, a method for assembling a bilge hopper portion and a corrugated bulkhead of a tanker according to the invention of claim 1 is a method of assembling a bilge hopper portion and a corrugated bulkhead of a tanker in block form. Fixing a corrugated plate piece having a predetermined vertical / horizontal joint to a swash plate block in advance, fixing the swash plate block to a double bottom plate block, and fixing to the double bottom plate block Forming a corrugated partition block having a predetermined shape corrugated partition wall having a joint portion to be joined to the vertical / horizontal joint portion in the structure constituted by the step of fixing the ship side outer plate block to the swash plate block and the previous two steps And the step of joining the vertical and horizontal joints of the corrugated partition block to the vertical and horizontal joints of the swash plate block, and fixing them. Than it is.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing a schematic structure of a hull structure of a bilge hopper portion of a tanker assembled by a method of assembling a bilge hopper portion of a tanker and a corrugated bulkhead according to an embodiment of the present invention, and FIG. Is a cross-sectional view of the hull structure of the bilge hopper, and FIG. 1B is a view of the corrugated bulkhead as viewed from above.
[0018]
FIG. 2 is an enlarged perspective view showing a part of the swash plate blocks IIPa and IISa that are assembled and used by the method of assembling the bilge hopper of the tanker and the corrugated bulkhead according to the embodiment of the present invention.
1 and 2, the members constituting the hull assembled by the assembling method of the bilge hopper portion of the tanker and the corrugated bulkhead according to the embodiment of the present invention, and the hull members shown in FIG. 3 and FIG. Are the same members, description will be made with the same reference numerals.
[0019]
The method of assembling the bilge hopper of the tanker and the corrugated bulkhead according to the embodiment of the present invention is a method of assembling the tanker in a block format, which is prepared by assembling the port swash plate block IIPa and the starboard swash plate block IISa in advance. Then, after assembling the double bottom plate block I on the board 4 fixed on the dock 2, the port swash plate block IIPa and the starboard swash plate block IISa are illustrated with respect to the double bottom plate block I. 1 (a) are welded to each other. Further, a port ship side skin block IIIPa is placed on the port swash plate block IIPa, and a star ship side skin plate block IIISa is shown on the starboard swash plate block IISa. 1 (a) are each welded to form a building, and finally, the corrugated bulkhead block is built into the built building. As shown in FIG. 1 (a), the rack IVa is lowered from the upper side in the figure, and then the tank top 7, the port swash plate block IIPa, the starboard swash plate block IISa, and the port ship side outer plate block IIIPa. The corrugated partition 15a of the corrugated partition block IVa is welded to the corrugated vertical plate 17Pa and the corrugated vertical plate 17Sa of the starboard side outer panel block IIISa.
[0020]
Therefore, in the method for assembling the bilge hopper portion of the tanker and the corrugated partition according to the embodiment of the present invention, a characteristic structure is adopted for the port swash plate block IIPa, the starboard swash plate block IISa, and the corrugated partition block IVa. In addition, the structure of the corrugated vertical plate piece 17P of the port side shipboard outer plate block IIIPa and the structure of the corrugated vertical plate piece 17Sa of the starboard side side plate block IIISa is adopted and assembled.
In the above-described process, both the P (port side) side and the S (star side) side have been described. However, in the following description, the P (port side) side will be described as a representative, and the S (star side) side will be described. Omitted.
[0021]
Here, the structure of the port swash plate block IIPa used in the method for assembling the bilge hopper portion of the tanker and the corrugated bulkhead according to the embodiment of the present invention will be described. As shown in FIG. 1 (a), the port swash plate block IIPa has a bilge outer plate 11P, a bilge hopper swash plate 13Pa, a cross member and a reinforcing member (not shown), and partly a double ship side longitudinal passage. The port swash plate block IIPa and the starboard swash plate block IISa are obtained in advance by ground work.
[0022]
This port-side swash plate block IIPa is provided with a corrugated plate piece 51P having a predetermined shape (stepped shape having vertical and horizontal joints) as shown in FIG. There is a feature in the fixed point, and the other bilge outer plate 11P, a cross member and a reinforcing material (not shown), and a partly double ship side longitudinal partition wall are not changed from the conventional ones. The process of assembling the port swash plate block IIPa is not a work in the dock 2 but a work on the ground. Therefore, when the corrugated vertical plate piece 17S is welded to the bilge hopper swash plate 13Pa, it is possible to assemble in an optimal arrangement state for welding rather than work in a narrow region that is too tight to enter even an operator. .
[0023]
Next, the structure of the corrugated partition block IVa used in the method for assembling the bilge hopper portion of the tanker and the corrugated partition according to the embodiment of the present invention will also be described. As shown to 1 (a), it shall form in the staircase shape (shape which has a vertical and horizontal junction part) contrary to the corrugated board pieces 51P and 51S.
[0024]
Furthermore, the portboard side shell block IIIPa used in the method for assembling the bilge hopper of the tanker and the corrugated bulkhead according to the embodiment of the present invention forms the corrugated vertical plate piece 17Pa in a shape as shown in FIG. It is a thing.
Each block used in the method for assembling the bilge hopper of the tanker and the corrugated bulkhead according to the embodiment of the present invention has the structure as described above, and is assembled using these blocks as follows.
[0025]
Further, as shown in FIG. 2, the port swash plate block IIPa has a bilge hopper swash plate 13Pa and a shape shown in FIG. 1 (a) mounted and fixed on one surface of the bilge hopper swash plate 13Pa. The corrugated plate piece 51P is composed of a bilge outer plate (not shown), a cross member and a reinforcing member (not shown), and a part that becomes a part of a double ship side longitudinal partition wall.
[0026]
When assembling this port swash plate block IIPa, since it is a ground work, the bilge hopper swash plate 13P should be placed in a flat state rather than in an inclined state and assembled and welded in an easy state for assembly. Therefore, the working conditions are good, the melting can be performed sufficiently, and the weld bead does not flow, and a weld bead having an appropriate shape can be formed.
[0027]
In summary, in the method for assembling the bilge hopper portion of the tanker and the corrugated bulkhead according to the embodiment of the present invention, the assembling operation is performed as follows.
Although the port swash plate block IIPa will be described again, the corrugated plate piece 51P having the shape shown in FIG. 1A is welded and fixed to the bilge hopper swash plate 13P by the assembly work on the ground instead of the assembly work in the dock. It shall be made into a block by doing.
[0028]
In the first step, the double bottom plate block I is assembled on the board 4 fixed to the dock 2.
In the second step, the port swash plate block IIPa is welded and fixed onto the double bottom plate block I as shown in FIG. Similarly, the port swash plate block IISa is welded and fixed onto the double bottom plate block I as shown in FIG. As a result, the corrugated plate pieces 51P and the corrugated plate pieces 51S are arranged in a stepped shape having vertical and horizontal joint portions as shown in FIG.
[0029]
In the third step, the port side slab plate block IIIPa is formed on the port swash plate block IIPa, and the starboard side slab block block IIISa is formed on the starboard swash plate block IISa as shown in FIG. Each is fixed by welding.
In the fourth step, first, the corrugated partition block IVa is lowered from the upper side in the drawing as shown in FIG. Next, the joint portion with the other block of the corrugated partition block IVa is fixed by welding.
[0030]
That is, the joint portion of the corrugated partition wall 15a of the corrugated partition block block IVa and the joint portion of the tank top 7 of the double bottom plate block I are fixed by welding. The joint of the corrugated partition 15a of the corrugated partition block IVa and the joint of the corrugated plate piece 51P of the port swash plate block IIPa are fixed by welding (the horizontal portion and the vertical portion of the corrugated plate piece 51P are welded).
[0031]
The joint of the corrugated partition 15a of the corrugated partition block IVa and the joint of the corrugated plate piece 51S of the starboard swash plate block IISa are fixed by welding (the horizontal portion and the vertical portion of the corrugated plate piece 51S are welded). The joint portion of the corrugated partition wall 15a of the corrugated partition block block IVa and the joint portion of the corrugated vertical plate piece 17Pa of the port ship side outer plate block IIIPa are fixed by welding. Similarly, the joint of the corrugated partition 15a of the corrugated partition block IVa and the joint of the corrugated vertical plate piece 17Sa of the starboard side outer plate block IIISa are fixed by welding.
[0032]
In the method for assembling the bilge hopper of the tanker and the corrugated bulkhead according to the embodiment of the present invention, the assembly work is performed as described above, and therefore, each block is interlinked with the corrugated bulkhead block IVa and the double bottom plate block I. Between the corrugated partition block IVa and the swash plate blocks IIPa and IISa, the connecting portion between the base portion of the corrugated partition 15a and the corrugated plate pieces 51P and 51S is provided between the base portion of the corrugated partition wall 15a and the tank top 7. Accordingly, the corrugated partition block IVa and the port side side plate blocks IIIPa and IIISa are constituted by the connecting portion of the corrugated partition 15 side and the corrugated vertical plate pieces 17Pa and 17Sa.
[0033]
Further, the joining portion of the corrugated partition 15a of the corrugated partition block IVa and the joining portion of the corrugated plate piece 51P of the port swash plate block IIPa may be welded to the horizontal portion and the vertical portion of the corrugated plate piece 51P. Furthermore, the joint portion of the corrugated partition wall 15a of the corrugated partition block IVa and the joint portion of the corrugated plate piece 51S of the starboard swash plate block IISa are also so-called lines between the horizontal portion and the vertical portion of the corrugated plate piece 51S. Since welding is sufficient and this portion is not inclined in a complicated manner, workability is greatly improved.
[0034]
Therefore, in the structure obtained by the method of assembling the bilge hopper portion of the tanker and the corrugated partition according to the embodiment of the present invention, the base of the corrugated partition 15a of the corrugated partition block IVa is the same as the conventional bilge hopper swash plate. Since it is not arranged on 13P and 13S, it can be made a structure resistant to stress concentration, and the welded portion does not need to be welded to a complicated inclined surface, so that workability can be improved. Become. This improved the assembly accuracy and made it easy to form the weld bead into an appropriate shape.
[0035]
The structure assembled by the method of assembling the bilge hopper of the tanker and the corrugated bulkhead according to the embodiment of the present invention is formed symmetrically between the starboard side and the port side, and the basic structure is changed. Therefore, as already described, one structure (P side) is representatively described, and the description of the other structure (S side) is omitted.
[0036]
Further, the structure of the port swash plate block IIPa will be described. The port swash plate block IIPa shown in FIG. 2 shows only a part of the structure and omits the other parts of the structure. As shown in FIG. 2, a partial structure of the port swash plate block IIPa is welded and fixed on a bilge hopper swash plate 13Pa by mounting a corrugated plate piece 51P.
[0037]
The corrugated plate piece 51P is a corrugated partition plate member piece made of a rectangular corrugated steel material having a predetermined length, a predetermined width and a predetermined thickness, and when assembled into the ship, It is fixed to the corrugated partition wall 15a of the block IVa by welding. The corrugated plate piece 51P of the port swash plate block IIPa is fixed at a predetermined angle with respect to the bilge hopper swash plate 13Pa. The corrugated plate piece 51P is completely vertical when assembled in the ship by the fourth step.
[0038]
Note that the corrugated plate piece 51P shown in FIG. 2 shows a part of the corrugated plate piece 51P of the port swash plate block IIPa shown in FIG. Further, in the corrugated plate piece 51P shown in FIG. 2, from the left to the right in the figure, reference numeral 51Pa denotes a convex portion of the corrugated plate piece 51P, reference numeral 51Pb denotes a concave portion of the corrugated plate piece 51P, and reference numeral 51Pc denotes the corrugated plate piece 51P. The convex portion, 51Pd is a concave portion of the corrugated plate piece 51P.
[0039]
Then, the port swash plate block IIPa passes through the second step and the fourth step in the method of assembling the bilge hopper portion of the tanker and the corrugated bulkhead according to the embodiment of the present invention, and thereby to FIG. It will be manufactured in the shape as shown.
In addition, although the said structure showed and demonstrated only the P side as already demonstrated, the S side can also be comprised in the completely same way.
[0040]
According to such a method for assembling the bilge hopper portion of the tanker and the corrugated partition wall, there are the following advantages.
(1) Since the port swash plate block IIPa or the starboard swash plate block IISa can be manufactured on the ground, the corrugated partition wall base (the side where the bilge hopper portion is joined to the swash plate) subjected to high stress is formed on the corrugated partition wall and the bilge hopper. There is an advantage that it is easy to match the inner reinforcing member with high accuracy.
[0041]
(2) Since the port swash plate block IIPa or the starboard swash plate block IISa can be manufactured by welding or the like on the ground without any obstruction, it is possible to weld to a bead shape with less stress concentration and no welding defects. There is.
(3) As a result of the above, the occurrence of cracks can be prevented from the corner portion of the corrugated partition wall welded to the swash plate of the bilge hopper.
[0042]
In the above embodiment, the shape of the corrugated plate piece 51P of the port swash plate block IIPa or the shape of the corrugated plate piece 51S of the starboard swash plate block IISa and the shape of the corrugated partition wall 15a of the corrugated partition block IVa are shown in FIG. Although it is configured in a stepped shape having a vertical / horizontal joint as shown in FIG. 1 (a), it is not limited to this, and other shapes (for example, not a stepped shape but a simple rectangular partial shape) As such, it may be configured to have a simple linear joint portion.
[0043]
【The invention's effect】
As described above, according to the method for assembling the bilge hopper of the tanker and the corrugated bulkhead according to the present invention, there are the following advantages.
(1) Since a port swash plate block or a starboard swash plate block can be manufactured on the ground, the base portion of the corrugated partition wall (the side where the bilge hopper portion is joined to the swash plate) subjected to high stress is placed in the corrugated partition wall and the bilge hopper. There is an advantage that it is easy to match with a reinforcing member with high accuracy.
[0044]
(2) Since the port swash plate block or the starboard swash plate block can be manufactured by welding or the like on the ground without any obstruction, there is an advantage that it can be welded into a bead shape having a low stress concentration and no welding defects. .
(3) As a result, the occurrence of cracks can be prevented from the corner portion of the corrugated partition wall welded to the swash plate of the bilge hopper portion.
(4) In addition, it is no longer necessary to fix the welds corresponding to the complicated inclination between the corrugated bulkhead and the swash plate of the bilge hopper, and it is sufficient to simply fix the welds in the vertical and horizontal joints. Even if it is not a skilled worker, it is possible to fix the difficult part by welding.
[Brief description of the drawings]
FIG. 1 is a diagram showing a schematic structure of a hull structure of a bilge hopper portion of a tanker assembled by a method of assembling a bilge hopper portion of a tanker and a corrugated bulkhead according to an embodiment of the present invention, and FIG. Is a cross-sectional view of the hull structure of the bilge hopper, and FIG. 1 (b) is a view taken along line BB in FIG. 1 (a).
FIG. 2 is an enlarged perspective view showing a part of a swash plate block in the method for assembling a bilge hopper portion and a corrugated partition wall of a tanker according to an embodiment of the present invention.
FIG. 3 is a view showing a conventional structure in which a corrugated bulkhead is mounted on a bilge hopper which is a portion where the cross-sectional area of the ship is thin like the bow side or the stern side, and FIG. FIG. 3 and FIG. 3B are views taken along line AA in FIG.
FIG. 4 is an enlarged view of a part of the conventional structure described above, which includes a part of a corrugated partition block, a part of a port swash plate block, and a part of a double bottom plate block. is there.
[Explanation of symbols]
I Double bottom plate block IIPa Port side swash plate block IISa Starboard side swash plate block IIIPa Port side ship side skin block IIISa Starboard side side plate block IVa Corrugated bulkhead block 1 Tanker 3, 3P, 3S Skin 5, 5P, 5S Double ship side longitudinal Bulkhead 7 Tank top 9 Ship bottom skin 11 Bilge skin 13, 13P, 13S, 13Pa, 13Sa Bilge hopper swash plate 15, 15a Corrugated partition 17Pa, 17Sa Corrugated vertical plate 51P, 51S Corrugated plate

Claims (1)

In the method of assembling the bilge hopper part of the tanker and the corrugated bulkhead in block form,
A step of pre-assembling a swash plate block by fixing a corrugated plate piece having predetermined vertical and horizontal joints to a bilge hopper swash plate;
Fixing the swash plate block to a double bottom plate block;
Fixing the ship side skin plate block to the swash plate block fixed to the double bottom plate block;
A step of forming a corrugated partition block having a predetermined shape of corrugated partition wall having a joint part joined to the vertical / horizontal joint part in the structure constituted by the previous two steps;
A method for assembling a tanker bilge hopper and a corrugated bulkhead, wherein the vertical / horizontal joint of the corrugated partition block is joined to the vertical / horizontal joint of the swash plate block and fixed.

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