JP3087764B2 - Container ship - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a container ship having a hold that is limited in its longitudinal direction by a transverse bulkhead.

2. Description of the Related Art The first purpose required for the construction of a container ship is as follows.
The goal is to provide the highest possible container loading capacity for the outer dimensions of the ship. This can be obtained, for example, by loading the containers as close as possible to each other in the hold. The ship's vertical mounting capacity, in particular,
Determined by the width of the transverse bulkhead measured in the longitudinal direction of the ship. The transverse bulkhead generally limits the hold in the longitudinal direction, thereby providing space between the two bulkheads for accommodating a container of 40 feet (about 12 m) or larger. The container is positioned so that its largest dimension lies in the longitudinal direction of the ship. The transverse bulkhead is generally provided with a box girder near the main deck. The girder contributes to the torsional stiffness of the ship and the stability of the transverse bulkhead against deflection when the transverse bulkhead is pressed from the hatch cover on the side of the ship. The transverse bulkhead must be able to support the flank and bottom that are subjected to water pressure during normal navigation and movement at sea. Thus, to have the required strength, the width of the transverse bulkhead is generally about 2 m. The transverse bulkheads may be open or closed, and generally only every other transverse bulkhead is watertight.

DESCRIPTION OF THE INVENTION It is an object of the present invention to provide a container ship capable of increasing a load capacity by improving a horizontal bulkhead which is a mechanical strength member of a hull having a predetermined outer dimension. .

According to the present invention, the aforementioned object is a container ship having a hold demarcated by a transverse bulkhead in the longitudinal direction of the ship, the transverse bulkhead contributing to the torsional rigidity of the ship and supporting the ship side and the bottom. A conventional wide horizontal bulkhead configured to
A narrow transverse bulkhead configured to absorb a force from the ship side and the bottom of the ship, wherein the narrow transverse bulkhead is widened by using a tension absorbing member extending in a longitudinal direction of the ship. Achieved by a container ship that is connected to

According to the container ship of the present invention, some of the wide conventional transverse bulkheads configured to contribute to the torsional rigidity of the ship and support the side and bottom of the ship are replaced by narrow transverse bulkheads. The space in the hold can be increased by the difference between the widths of these horizontal bulkheads. Moreover, since the narrow horizontal bulkhead is reinforced in the longitudinal direction of the ship by the tension absorbing member, that is, the tension absorbing member compensates for the reduction in rigidity caused by the decrease in the width of the horizontal bulkhead, , The force from the bottom and hatch cover can be sufficiently absorbed. As a result, it is possible to increase the load capacity of the container ship while maintaining the mechanical strength required for a hull having a predetermined external dimension.

Specifically, some of the horizontal partition walls are, for example, 0.1 m to 0.2 m
The width of the container should be 5% to 10%.
% Can also be increased. The tension absorbing member is fixed in a suitable manner to the wide and narrow transverse bulkheads, i.e. properly and directly fixed to a vertically extending container guide provided on the transverse bulkhead. Yes,
It is located between containers stacked in the hold. At the end of the hold, narrow transverse bulkheads may be connected to other stable bulkheads, such as engine room bulkheads, instead of conventional wide transverse bulkheads.

According to a preferred feature of the container ship according to the invention, two narrow transverse bulkheads with connecting tension absorbing members are provided between the wide normal transverse bulkheads.

According to another preferred feature of the container ship according to the invention, the tension absorbing member may be a drawbar.

According to still another preferred feature of the container ship according to the present invention, the tension absorbing member may be a beam capable of absorbing not only tensile force but also compressive force.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is described in more detail below with reference to the accompanying drawings, in which:

FIG. 1 is a schematic perspective view of a hull compartment according to the invention, shown in a partially omitted form for clarity.

FIG. 2 is a schematic side view of the hull compartment shown in FIG. 1 with the vertical stiffeners and container guides shown partially omitted for clarity.

 FIG. 3 is a sectional view taken along line II of FIG.

Preferred Embodiments of the Invention The compartments of the container ship shown in FIGS. 1 and 2 comprise five successive holds 1, 2,.
The part consisting of 3, 4, 5 is shown. These holds are defined by a ship side 6 and a bottom 7, between each hold a transverse bulkhead or transverse bulkhead is provided with two relatively wide or wide conventional transverse bulkheads 8, 9 and these. It is arranged in the form of two relatively narrow or narrow transverse partitions 10, 11 arranged between them. Between the transverse bulkheads, there are a number of tension absorbing members
12 extend parallel to the ship's longitudinal direction, and these drawbars are secured to adjacent transverse bulkheads using suitable securing means such as, for example, welding.

The relatively wide conventional bulkheads 8, 9 typically have a width of about 2 m in the longitudinal direction of the ship. In the embodiment shown, the transverse bulkhead comprises a vertical plate 13 and a transverse slat 14 welded to the plate.
At the top of 14, a box 15 and a U-shaped section 16 abut each other. The free end of the transversal caul plate 14 is provided with a downwardly directed web 17.

In the embodiment shown, the relatively narrow transverse bulkhead also has a vertical plate 18 to which transverse reinforcing squares 19 are welded on its sides (see in particular FIG. 2). thing).

On both sides of all of the transverse bulkheads 8, 9, 10, 11 there are provided vertical container guides 20 for guiding the corners of the containers as they move up and down in the hold. These container guides may be of various shapes and may be known types of container guides. In the example shown in FIG. 3, the T-shaped container guide is located on the same side as the square 19, while on the other side the container guide is a narrow plate welded to that side. It's just A further reinforcing plate or strip 22 is welded between the squares 19.

In the embodiment shown in FIG. 3, the drawbar 12 is an intermediate connecting plate.
Directly welded to the container guide via 21. The connecting plate 21 is a single plate that is longer in the vertical direction than the tension bar 12 itself and has a recess, and the tension bar 12 is received in the recess and fixed by welding. .

In various ways, depending on the construction of the transverse bulkhead and the container guide used, the drawbar 12 is connected to the transverse bulkhead 8, 9, 1
It can be fixed to 0,11. Narrow transverse bulkhead 1
The narrow width of 0, 11 and thus its low rigidity
It is of utmost importance that can be compensated for. The number of drawbars may vary, but the number of drawbars may be both vertical and horizontal so that the drawbars are provided opposite the longitudinal edges of each of the containers placed in the hold. It is preferable to arrange them. In order to absorb the loads from the hatches and their loads, drawbars can be placed at even shorter intervals on top of the hold.

When a combination of wide transverse bulkheads 8, 9 and narrow transverse bulkheads 10, 11 is used, the containers can be loaded closer in the vertical direction, thus providing ventilation and ventilation at individual bulkheads. Even if access to the hold has to be both possible, its container loading capacity can be increased by 5-10% compared to the prior art.

The invention has been described with reference to its preferred embodiment. Numerous modifications may be made without departing from the scope of the invention. For example, the drawbar may be a wire, may have various cross-sections, and may be secured in various ways. Thus, the narrow partitions can be fixed, for example, using elongated bar-shaped tensile and compressive absorbing structures that connect the narrow transverse partitions longitudinally to the wide conventional transverse partitions. It is. Such a structure requires a greater spacing between container stacks, but on the other hand, a narrow transverse bulkhead that is not connected on either side in the longitudinal direction to the wide transverse bulkhead has two successive wide bulkheads. It may be located between the transverse bulkheads.

Continuation of the front page (56) References JP-A-61-41690 (JP, A) JP-A-62-85756 (JP, A) JP-A-52-61093 (JP, A) US Patent 3,583,350 (US, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) B63B 25/00

Claims (4)

(57) [Claims] 1. A container ship having a hold demarcated by horizontal bulkheads in the longitudinal direction of the ship, wherein the horizontal bulkheads contribute to the torsional rigidity of the ship and are configured to support the side and bottom of the ship. A conventional horizontal bulkhead (8, 9) having a wide width and a narrow horizontal bulkhead (10, 11) configured to absorb a force from the side and the bottom of the ship, 11) is connected to the wide transverse bulkheads (8, 9) using a tension absorbing member (12) extending in the longitudinal direction of the ship. 2. Two narrow horizontal partition walls (10, 11) having a tension absorbing member (12) for connection are provided between said wide conventional horizontal partition walls (8, 9). The container ship according to claim 1, wherein: 3. The container ship according to claim 1, wherein the tension absorbing member is a tension rod. 4. The container ship according to claim 1, wherein the tension absorbing member is a beam capable of absorbing not only tensile force but also compressive force.