JP4142476B2 - Access trunk in bulk carrier - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an access trunk in a bulk carrier, and in particular, in a bulk carrier having a double hull structure on a ship bottom and a side wall, the side wall portion is a void space, and the void space and the access for accessing the top side tank and the bottom tank are provided. It is related to the trunk.
[0002]
[Prior art]
In a tanker, a double hull structure is adopted from the bottom to the side wall. However, in bulk carriers, conventionally, only the bottom is a double hull, and the side wall is a single hull.
However, from the viewpoint of preventing inundation into the hold, recently it has been proposed and implemented that the bottom and side walls are also double hulls.
[0003]
In bulk carriers, the specific gravity of the bulk to be loaded is large, and a large amount of ballast is required to stabilize navigation during empty loading. For this reason, it is common to provide a bottom tank and a top side tank as ballast tanks. Yes (see, for example, Patent Document 1).
[0004]
In addition, in the ship, the hull needs to be inspected, and an access trunk is installed to reach the bottom tank from the upper deck. Usually, the access trunk is located along the longitudinal bulkhead or the transverse bulkhead that partitions the hold. It is installed (for example, refer to Patent Document 2).
[0005]
In this case, it is necessary to secure an installation space for the access trunk in the hold, and the shape becomes uneven (planar) in the hold.
In the case where the transverse partition wall has a corrugated structure, a part of the concave portion is closed to form an access trunk.
[0006]
In addition, in the bulk carrier as shown in Patent Document 1, the void space may be accessed via the top side tank. Of course, in this case, when the top side tank is ballasted, it cannot be accessed. .
[0007]
[Patent Document 1]
JP-A-9-301266 (FIGS. 1 to 4)
[Patent Document 2]
JP-A-1-317892 (FIGS. 1-2)
[0008]
[Problems to be solved by the invention]
It is an object of the present invention to obtain an access trunk in a bulk carrier having a double hull structure that can access a void space even when a ballast is stretched on a top side tank and can inspect side walls. To do.
[0009]
[Means for Solving the Problems]
In a bulk carrier having a double hull side wall, the side wall having the double hull structure is configured as a void space, and a top side tank formed on the back surface of the upper deck and having a ship side outer plate upper part and an upper deck as components. An access trunk that penetrated from the upper deck to the upper surface of the void space was installed.
In addition, a closing plate that is provided in parallel with the transverse bulkhead at the corner where the transverse bulkhead that forms the wall of the top side tank and the ship side outer plate is crossed in the width direction of the hull so as to divide the hold in the longitudinal direction to the formation of the access trunk was occluded with and closing plate provided along the ship's side interior wall also features.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. 1 is a cross-sectional view schematically showing a bulk carrier provided with an access trunk according to the present invention, FIG. 2 is a side cross-sectional view taken along line AA in FIG. 1, and FIG. 3 is taken along line BB in FIG. FIG.
[0011]
In the figure, 1 is a hull, 2 is an upper deck, 3 is a ship bottom outer plate, 4 is a ship bottom inner plate, and the ship bottom has a double hull structure with a ship bottom outer plate 3 and a ship bottom inner plate 4, That is, the bottom tank 5 is configured between the ship bottom outer plate 3 and the ship bottom inner plate 4.
[0012]
Reference numeral 6 denotes a ship-side outer plate, 7 denotes a ship-side inner plate, and the side wall has a double hull structure composed of the ship-side outer plate 6 and the ship-side inner plate 7, and this portion, that is, the ship-side outer plate 6 and the ship-side outer plate. A void space 8 is formed between the inner plate 7 and the inner plate 7.
[0013]
A top side tank 9 is formed on the back surface of the upper deck 2 so as to extend in the longitudinal direction of the hull. The bottom plate 10 of the top side tank 9 is inclined from the hatch combing 11 to the ship side outer plate 6.
An access trunk 12 penetrates the top side tank 9 from the upper deck 2 to the upper surface of the void space 8.
[0014]
The access trunk 12 is a rectangular tubular chamber, and can be formed by using the ship side skin 6 and the transverse bulkhead 13 that divides the hold in the front-rear direction. At the corner where the plate 6 is in contact, the side parallel to the transverse partition wall 13 and the side corresponding to the ship side inner wall 7 are closed with a closing plate.
[0015]
A ladder 14 is provided on the inner surface of the access trunk 12. 15 is a vertical manhole (with a sealing lid) provided on the upper deck 2 and the bottom plate 10 of the top side tank in the plane of the access trunk 12, and 16 is the position of the top side tank 9. This is a lateral manhole provided on 12 closing plates. A vertical manhole 15 is also provided in the ship bottom inner plate 4.
[0016]
The configuration of the present invention is as described above. Therefore, the top side tank 9 can be accessed through the manhole 15, the access trunk 12, and the manhole 16 on the upper deck 2. Further, the void space 8 can be accessed from the access trunk 12 through the manhole 15 of the bottom plate 10 of the top side tank, and further into the bottom tank 5 through the manhole 15 provided in the ship bottom inner plate 4 from the void space 8. Accessible.
[0017]
Thus, since the access trunk 12 is provided through the top side tank 9, even when the ballast is stretched on the top side tank 9, it is possible to access the void space 8 from the upper deck 2. In particular, it is possible to inspect the side wall portion, which is often damaged from the ship side portion, at any time as necessary.
[0018]
【The invention's effect】
The present invention relates to a double-hull structure bulk carrier having a void space configuration between a ship-side outer plate and a ship-side inner plate, and having a ship-side outer plate upper part and an upper deck as constituent elements formed on the back surface of the upper deck. A transversal bulkhead and ship side skin that form the wall of the top side tank and traverse in the width direction of the hull so as to divide the hold in the front-rear direction. Since the access trunk is formed by closing the corner part that is in contact with the closing plate provided parallel to the transverse bulkhead and the closing plate provided along the inner wall of the ship side, the top side tank is ballasted Even now, it became possible to access the void space and check the side wall at any time.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view schematically showing a bulk carrier provided with an access trunk according to the present invention.
FIG. 2 is a side sectional view taken along line AA in FIG.
3 is a plan sectional view taken along line BB in FIG. 1. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Hull 2 Upper deck 3 Ship bottom outer plate 4 Ship bottom inner plate 5 Bottom tank 6 Ship side outer plate 7 Ship side inner plate 8 Void space 9 Top side tank 10 Bottom plate of top side tank 11 Hatch combing 12 Access trunk 13 Transverse bulkhead 14 Ladder 15 Manhole 16 Manhole

Claims (2)

A bulk carrier having a double hull structure on the bottom and side walls thereof, wherein the side wall portion having the double hull structure is configured as a void space, and a top side tank formed on the back surface of the upper deck and having a ship side outer plate upper part and an upper deck as components Through the upper deck, install an access trunk that reaches the upper surface of the void space,
Crossing in the width direction of the hull so as to divide the hold in the front-rear direction, and at the corner where the crossing bulkhead that forms the wall of the top side tank and the ship side skin are in contact with the crossing bulkhead and the ship side access trunk in the feature and to Luba Rukukyariya that was closed by a closing plate provided along the inner wall to form the access trunk. In the plane of the access trunk access in the upper deck and provided with a manhole in the bottom plate of topside tank, closing the bulk carrier according to claim 1, characterized in that a manhole which communicates with the topside tank plate trunk.

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