JPH0755674B2 - Wide Container-Ship - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a wide container ship (hereinafter referred to as a Panamax type container ship) having a ship width that can pass through the Panama Canal.

[Conventional technology]

This type of ship has a maximum width of 106f _t (32.3088m), which is one of the maximum dimensions, and in many cases 106f _t is adopted as the maximum width so that the maximum load can be obtained economically.

In order to secure navigation safety, the Panamax type container ship has conventionally been constructed with a double hull structure on the side of the ship as shown in Fig. 12 cross-sectional view and Fig. 13 vertical cross-sectional view. The horizontal distance D of the hull structure part is generally about 2500-2700 mm, and the large horizontal bulkhead cross deck part 10 (length dimension l ₁ ) shown in FIG.
The cross-deck section 11 (length l ₂ ) at the center of the cargo hold and the cross-deck 12 (length l ₃ ) between the containers in the cargo hold ensure the strength of the ship and can withstand the torsional deformation due to waves during navigation. I am supposed to.

Here, the vertical top box girder 7 has a hatch cover 2
It is a strength member for supporting the vertical partition box girder 8 and minimizes torsional deformation, which also contributes to the reinforcement of the horizontal partition wall 9 and the horizontal partition wall cross deck section 10. .

In addition, the hatch cover 2 is currently opened and closed by a shore crane on the quay, so the weight of the hatch cover 2 is currently 30%.
Must LT below, since the container 4 to the top of the hatch cover 2 are stacked, should also Motas strength to withstand the load, the weight of the hatch cover 2 is large, for example, a cellular for 40f _t containers mounted Horizontal distance between structural members L ₁ , 20f _t Cellular container mounting container When the horizontal distance L ₂ between the structural members is to be equipped with a hatch cover with a one-piece structure in the ship width direction, in general, it does not fit in 30LT. As shown in FIG. 12, it is divided into two pieces on the right and left or three pieces.

For the above reasons, the conventional Panamax type container ship has a double hull structure section on the side of the ship to counter torsional deformation. Due to the size of the horizontal bulkhead cross deck and the cargo cross center cross deck being determined, loading of containers 3 in 10 rows in the ship width direction is the maximum, and the hatch cover vessels are also related to the quay crane capacity. It is divided into 2-3 pieces in the width direction.

Thisゝa, 5 hatch coaming, 6 container pedestal 13 cellular structural container mounting, 14 20f _t container 15 is 40f _t container.

However, in such a structure, the maximum container loading capacity is 10 cases in the ship width direction, so at this point the container loading capacity cannot be increased, and the dimension D is reduced to increase the number of container rows in the ship width direction. Then, the strength of the hull is reduced.

By the way, when this point is calculated for an actual ship, it becomes as follows.

That is, a is the horizontal distance between the longitudinal bulkheads of the cargo hold side wall and the cellular structure, b is the horizontal distance between the cellular structural members in the cargo hold, C is the horizontal distance between the centerline and the centerline side cellular structural member for the innermost container. Then, a ≈ 70mm b ≈ 150mm B ≈ 2,461mm C ≈ 550mm, so if we now arrange 10 rows of containers in the cargo hold, a x 2 = 70 x 2 = 140mm b x 8 = 150 x 8 = 1,200 mm C x 2 = 550 x 2 = 1,100mm B x 10 = 2,461 x 10 = 24,610mm Total = 27,050mm and ship width = 32,308.8mm, so 2D = 32,308.8-27,050 = 5,258,5mm ∴D = 2,629.4mm And the ratio of D to ship width is The ratio of the boat width and the value obtained by subtracting 2D from the boat width is On the other hand, the longitudinal dimension of the ship is e = 50mm f = 370mm l ₁ = 2,100mm l ₂ = 1,200mm l ₃ = 400mm.

[Problems to be solved by the invention]

The present invention has been proposed in view of the above circumstances, and enables the loading of 11 rows of containers in the ship width direction, thereby increasing the loading capacity, and at the same time, an economical width that shortens the captain. The purpose is to provide a wide container ship.

[Means for solving problems]

Therefore, the present invention has a double hull structure on the side of the ship, and in a wide container ship in which the container is loaded in the hold and / or on the hatch cover, the horizontal distance between the double hull structures is 28 m or more. Therefore, the ship width is less than 106f _t
The ship's side double-hull that holds the 11 cases of containers, the corrugated flexible hatch combing that surrounds the hatch and projects on the upper deck, and projects upward at both ends of the center line of the rectangular hatch. It is characterized by comprising a pair of engaging projections provided and a pair of fitting members projecting at both ends on the center line of the rectangular hatch cover and fitted into the engaging projections.

[Action]

With this structure, the side hull structure of the side hull is made narrower than the conventional double hull structure, and the maximum loading capacity of containers for cargo is 11 rows. In order to prevent the hatch cover from coming off, the hatch combing that can be deformed following the twisting deformation of the fleet is used to prevent the hatch cover from coming off due to the rigidity of the hatch cover and its restraint structure against the deformation of the hatch combing. In fact, it is possible to prevent the deformation of the hull.

〔Example〕

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a transverse sectional view thereof, FIG. 2 is a longitudinal sectional view of FIG. 1, and FIG. 3 is a plan view showing hatch coaming of FIG. 5 and 5 are sectional views showing IV-IV and V-V of FIG. 3, respectively, FIG. 6 is a plan view showing the hatch cover of FIG. 1, and FIG. 7 is showing the hatch cover of FIG. FIG. 8 is a partially enlarged view, FIG. 8 is a plan view of FIG. 7, and FIG. 9 is a cross-sectional view showing a state in which containers are stacked on the hatch cover in FIG.
FIG. 11 and FIG. 11 are perspective views showing the transverse bulkhead cross deck part and the cargo hold center cross deck part of FIG. 2, respectively.

In the above figure, the same symbols as in Figures 12 to 13 respectively
The same members as in Fig. 13 are shown, and 5a is a structure in which steel plates are assembled into a corrugated shape by welding by means of a flexible corrugated hatch hatching that absorbs the torsional deformation of the hull, and the corrugated steel sheet is pressed and bent into a corrugated shape. But it's okay.

The hatch cover is a hatch cover main part 2a and a sub part of the hatch cover that closes a sub opening provided in the hatch cover main part 2a.
The hatch cover main part 2a is installed separately, and then the hatch cover main part 2a is mounted first, and then the hatch cover sub part 2b is fitted into the sub opening of the hatch bar main part 2a to be mounted, thereby preventing the hull cover main part 2a from being deformed. It is possible to reduce the weight of each hatch cover to 30LT or less, and the hatch cover sub-part 2b is shown in the figure.
Although the shape of is a circle or a quadrangle, both shapes are possible, and when stacked, the load of the container on the upper deck will be received by the hatch cover main part 2a as shown in FIG. 9, No load is applied to the hatch cover sub-part 2b, and the hatch cover sub-part 2b can be made lighter.

Reference numeral 16 is an aggregate for preventing the deflection (deformation) of the cross deck 10 provided on the horizontal bulkhead 9, and a transverse girder 10a is provided at the lower end of the cross deck 10 if necessary, so that l ₁ in the ship length direction is l ₁ −
It can be reduced to α.

Reference numeral 17 is an I-shaped aggregate provided in the cross deck section 11 in the center of the cargo hold.
₂ can be reduced to l ₂ α.

Due to such a structure, the ship side double hull structure is provided with hatch combing and a hatch cover that are smaller than the conventional double hull structure and absorb the increasing deformation caused by the hull, as shown below. This will enable a Panamax type container ship capable of loading 11 rows.

Reference numeral 18 denotes a pair of front and rear stoppers having a rectangular cross section protruding from the deck, and is fitted with a pair of bifurcated front and rear stoppers 19 protruding from both ends on the center line of the hatch cover 2a. Thus, the hatch cover 2a is prevented from coming off the hatch due to the torsional deformation of the hull.

According to this embodiment, a, b, B of FIGS.
The main dimensions and main dimension ratios are calculated as follows, assuming the same as that of Figures 2 to 13.

That is, in this embodiment, 11 rows of types are possible in the cargo hold, so a × 2 = 70 × 2 = 140 mm b × 10 = 150 × 10 = 1,500 mm B × 11 = 2461 × 11 = 27,071 mm total The width of 28,711 mm is 32,308.8 mm, which is the same as in Fig. 12, so 2D-α = 32,308.8-28,711 = 3597.8 mm D-α = 1,798.9 mm The ratio of D-α to width is The ratio of the ship width and the value obtained by subtracting 2D-α from the ship width is Therefore, both l ₁ α and l ₂ −α can be 1000 mm.

This shows that the length of the ship can be shortened, leading to cost savings.

According to this structure, the double hull structure on the side of the ship is made smaller than before, and the amount of torsional deformation is large. However, the deformation allowance hatch coaming and hatch cover allow the container to move in the width direction of the Panamax type container ship. It can be loaded in a row and the cargo load of the ship can be increased.

[Effect of device]

In short, according to the present invention, in a wide container ship having a double hull structure on the ship side and having containers loaded in the hold and / or on the hatch cover, the horizontal distance between the double hull structures is 28 m or more. If there is a boat width of 106f _t or less
11 rows of double sided hulls carrying containers, corrugated flexible hatch combing projecting on the upper deck surrounding the hatch, and projecting upwards at both ends of the rectangular hatch centerline. 11 pairs of containers in the ship width direction by including a pair of engaging projections and a pair of fitting members that are respectively provided at both ends on the center line of the rectangular hatch cover and that fit into the engaging projections. The present invention is extremely useful industrially, since an economical wide-width container ship that shortens the captain can be obtained by increasing the loading capacity by enabling the loading of

[Brief description of drawings]

FIG. 1 is a horizontal sectional view of a ship showing an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of FIG. 1, and FIG. 3 is a plan view showing hatch coaming of FIG. 1, 4, 5 Figures are IV of Figure 3, respectively
-IV and V-V sectional views, FIG. 6 is a plan view showing the hatch cover of FIG. 1, FIG. 7 is a partially enlarged view showing the hatch cover of FIG. 1, and FIG. 8 is of FIG. FIG. 9 is a plan view, FIG. 9 is a horizontal cross-sectional view showing a state in which containers are stacked on the hatch cover in FIG. 7, and FIGS. 10 and 11 are horizontal bulkhead cross deck parts and cargo holds of FIG. 2, respectively. It is a perspective view which shows a center cross deck part. FIG. 12 is a cross-sectional view showing a known container ship, and FIG. 13 is a cross-sectional view of FIG. 1 ... Hull, 2a ... Hatch cover main part, 2b ... Hatch cover sub part, 3 ... Container in cargo hold, 4 ... Deck container, 5a ... Hatch combing, 6 ... Container pedestal, 7 ... Vertical upper box girder, 8 ... Vertical lower box girder, 9 ... Horizontal bulkhead, 10 ... Cross deck section, 10
a ... crossbeam, 11 ... central cross deck portion, 11a ... crossbeam, 12 ... dazzle cross deck unit, 13 ... cellular structural member, 14 ... 20f _t container, 15 ... 40f _t container, 16 ... aggregate, 17 ... I type aggregate, 18 ... Clasp

Claims (1)

[Claims] 1. A wide container ship having a double hull structure on the side of a ship, wherein the container is loaded in the hold and / or on the hatch cover, and the horizontal distance between the double hull structures is 28.
If it is m or more, the ship width is 106 f _t or less, and the double hull on the side of the ship that holds 11 rows of containers and the corrugated type flexibility that is projected on the upper deck surrounding the hatch Hatch combing, a pair of engaging projections projecting upward on both ends of the center line of the rectangular hatch, and a pair of fittings projecting on both ends of the rectangular hatch cover on the center line to fit the engaging projections. A wide container ship characterized by having a composite member.