JP2005306114A - Freight vessel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a freight vessel easy to handle its pontoon hatch even if the vessel is of large size, broad-beamed and assuring a high degree of freedom in mixed loading with heavy loads. <P>SOLUTION: The freight vessel is structured so that an upper hold 2 and a lower hold 1 are divided by a second deck 3, the pontoon hatch 4 is installed at the opening in the second deck 3, and a hatch 6 is provided in the upper hold 2, wherein decks 14 for the holds are provided on the second deck 3 at the left and right sides of the hatch 6, and further a deck hold 21 and a second deck hold 22 of double decker structure are provided. At the hatch side ends of the deck holds 21 and 22, pillars 13 are installed at a certain spacing in the hull longitudinal direction, wherein the pillars 13 consist of stationary pillar and movable pillar. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cargo ship. More specifically, the present invention relates to a general cargo ship that carries steel materials such as general goods, automobiles, containers, and pipes.

  Conventional example 1 shown in FIG. 9 is a central longitudinal sectional view of a two-layer deck cargo ship. The lower hold 101 and the upper hold 102 are separated by a second deck 103, and a pontoon hatch 104 is spanned over the central opening of the second deck 103. A hatch 106 is formed in the central opening of the upper deck 105, and a hatch cover 107 can cover the lid. The pontoon hatch 104 is a steel lid, on which an automobile or the like can be loaded. For this reason, in a two-layer deck cargo ship, it is possible to carry out mixed loading such that heavy goods such as steel materials and plant materials are mainly loaded into the lower hold 101 and general cargo and automobiles are loaded into the upper hold 102 (Non-patent Document 1). .

  Conventional example 2 shown in FIG. 10 is a central longitudinal sectional view of a three-layer deck cargo ship. In this three-layer deck cargo ship, the first pontoon hatch 104a separates the lower hold 101 and the upper hold, and the upper hold is divided into the intermediate hold 102a and the upper hold 102b by the second pontoon hatch 104b. It is a thing. The lower cargo 101 can be loaded with heavy items, the intermediate cargo 102a can be loaded with automobiles and general cargo, and the upper cargo 102b can be loaded with vehicles.

  By the way, the pontoon hatches 104, 104a, 104b used in the conventional examples 1 and 2 can be handled because the width of the pontoon hatch is up to about 15 m if it is a cargo ship up to a cargo weight of 20,000 tons. However, if the pontoon hatch becomes larger than 15m and the width of the pontoon hatch exceeds 15m, the weight increases considerably, and handling such as storing the hatch becomes a difficult and dangerous work. In terms of strength, only light cargo such as automobiles can be loaded, so multipurpose mixed loading was difficult.

Further, the conventional examples 1 and 2 have a problem that it is difficult to use the cargo loading space on the second deck 103 effectively.
That is, in FIG. 10, S indicates a starboard side cross section, and P indicates a port side. The starboard side is a cross section of the portion where the frame 111 is provided, and the port side is a cross section of the portion where the web frame 112 is provided.
FIG. 11 is a partially enlarged plan view of the second deck 103 in FIG. 10, and the outer plate 113 is supported by a plurality of frames 111 and a web frame 112 is attached to every several frames 111. . Since the web frame 112 is wide, a dent is generated in the cargo loading space on the second deck 103, which hinders efficient cargo loading.

Hull Part Names (Revised Edition) Pages 54-55 Katsu Ikeda 1979 Kaibundo

  In view of the above circumstances, the present invention is a cargo ship that is easy to handle a pontoon hatch, has a high cargo loading efficiency on the second deck, and has a high degree of freedom of mixed loading with a heavy load even in a large cargo ship having a wide ship width. The purpose is to provide a ship.

The cargo ship according to the first aspect of the invention is a cargo ship having an upper cargo hatch on the upper deck, dividing the upper cargo and lower cargo on the second deck, and attaching a pontoon hatch to the opening of the second deck. A deck deck is provided by attaching a deck for the deck on the second deck on the left and right sides of the hatch.
A cargo ship according to a second aspect of the present invention is characterized in that, in the first aspect, the deck hold is two-story.
A cargo ship according to a third aspect of the present invention is the cargo ship according to the second aspect, wherein pillars are attached to the hatch side end of the deck hold at intervals in the hull length direction, and the hold deck is fixed by the pillars. It is characterized by.
A cargo ship according to a fourth invention is characterized in that, in the third invention, the pillar is composed of a fixed pillar and a movable pillar.

According to the first invention, since the opening width of the hatch is reduced by the provision of the decks for the left and right sides of the second deck, the pontoon hatch attached to the opening of the lower hold can be downsized, and the ship width is large. Even large ships can easily handle pontoon hatches. Moreover, since different types of cargo, including heavy items, can be loaded on the cargo deck, the degree of freedom of mixed loading is increased.
According to the second invention, since different kinds of cargo can be stacked in the two-story deck hold, the degree of freedom of mixed loading is increased.
According to the third aspect of the present invention, the strength of the two-story deck hold can be increased by fixing the hold deck with pillars. Also, by using the pillars, the large-sized web frame was abolished, and the cargo deck was fixed only with the small-sized pillars, so the cargo deck could be loaded efficiently by making the planar shape of the cargo deck rectangular. Became.
According to the fourth aspect of the present invention, the cargo loading operation can be facilitated by moving the movable pillar, and the vehicle can be smoothly driven.

Next, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a longitudinal sectional view of a cargo ship according to an embodiment of the present invention. 2 is a plan view taken along line II in FIG. FIG. 3 is a plan view taken along line III in FIG. FIG. 4 is an enlarged plan view around the cargo deck.

In FIG. 1, 1 is a lower hold, 2 is an upper hold, and these holds are separated by a second deck 3. A pontoon hatch 4 is attached to the central opening of the second deck 3.
A central opening of the upper deck 5 is a hatch 6, and an upper surface thereof can be opened and closed by a hatch cover 7.
These structures are not particularly different from conventional ships.

As shown in FIGS. 1 and 4, a ship side outer plate 11 is fixed to a frame 12 between the second deck 3 and the upper deck 5 on the outermost side of the hull. A fixed pillar 13 is fixed to the inner end portion on the hatch side. A cargo deck 14 is attached to the frame 12 and the fixed pillar 13. The cargo deck 14 only needs to be strong enough to load automobiles, pipes, and steel.
The cargo deck 14 is provided between the second deck 3 and the upper deck 5, so that a two-story deck cargo 20 is formed. That is, the lower side of the ship deck 14 is the first deck hold 21 and the upper side is the second deck hold 22.

  The fixed pillars 13 are spaced along the outer circumference of the hatch 6 in the longitudinal direction of the hull, and an appropriate number of the fixed pillars 13 are provided so as to stand between the second deck 3 and the upper deck 5 so as to maintain a necessary strength. I have to. As this fixed pillar 13, for example, an H-shaped steel or the like is used, and one having a high strength but a small size is used. In this way, since both sides of the deck 14 for the cargo hold are both supported by the small fixed pillar 13 and the frame 12, it is not necessary to support it by the large web frame (112 in FIG. 10). Both the first deck hold 21 and the second deck hold 22 constituting the deck hold 20 were formed into a rectangular (square) shape without a protrusion. For this reason, cargo loading efficiency is further improved.

  In addition to the above, if the movable pillar 13 is provided between the fixed pillars 13, the holding strength of the deck is increased. As the movable configuration, any type such as a tilting type or a moving type can be adopted. When such a movable pillar is used, the opening of the deck hold 20 is widened while maintaining necessary holding strength, so that cargo can be easily loaded. For example, it becomes easy to travel an automobile, and it is possible to carry in a long object such as a pipe or a steel material, and it is also possible to carry in with a forklift.

  As shown in FIGS. 2 and 3, the cargo ship of this embodiment has a structure in which a deck hold 20 is provided in the second hold H2 and the third hold H3, and the first hold H1 and the stern side on the bow side. No. 4 hold H4 has a normal structure. However, if the cargo ship has a long hull length and there are three or more intermediate cargoes excluding the bow on the bow and stern sides, it is not possible to install the deck cargoes of the present invention in all or some of the cargoes. Is optional. A ramp way 31 for loading an automobile is provided, and the ramp way 31 communicates with the first deck hold 21 and the second deck hold 22.

Next, an example of cargo loading in the cargo ship of the present embodiment will be described with reference to FIGS.
(1) Cargo loading example in FIG. 5 A pontoon hatch 4 is installed and mixed as follows.
Lower hold 1 and upper hold 2: General cargo (not shown) is loaded on the inner bottom plate of the lower hold 1 and loaded on the pontoon hatch 4 in the upper hold 2.
First deck hold 21 and second deck hold 22: Load pipes, steel, and the like. Since pipes, steel materials, and the like are easy to align, they can be loaded in a large amount into the elongated first and second deck holds 21 and 22 in a space efficient manner.

(2) Cargo loading example in FIG. 6 The pontoon hatch 4 is installed and mixed as follows.
Lower hold 1 and upper hold 2: General cargo (not shown) is loaded on the inner bottom plate of the lower hold 1 and loaded on the pontoon hatch 4 in the upper hold 2.
First deck hold 21 and second deck hold 22: Cars are loaded. Cars are easy to line up, so a large number of cars can be loaded in the relatively narrow first and second deck holds 21 and 22, and the onboard ramp way 31 can be used, so the cargo handling efficiency is high. It is.

(3) Cargo loading example in FIG. 7 The pontoon hatch 4 is installed and mixed as follows.
Lower hold 1: Load general cargo (not shown) on the inner bottom plate.
Upper hold 2 (the upper surface of the pontoon hatch 4): Since the automobile is relatively light, it can be loaded onto the pontoon hatch 4. The cargo handling may be performed by using an inboard lampway, or by a crane or the like through the hatch 6.
1st deck hold 21 and 2nd deck hold 22: Automobile

(4) Cargo loading example in Fig. 8 Lower hold 1 and upper hold 2: Container
1st deck hold 21 and 2nd deck hold 22: Automobile Upper surface of upper deck 5: Container Upper surface of hatch cover 7: Container Note that pontoon hatch 4 is not used in lower hold 1 and upper hold 2 and containers are stacked. Alternatively, using the pontoon hatch 4, containers may be loaded separately into the lower hold 1 and the upper hold 2.

  Although four examples of mixed cargo have been described above, various examples of mixed cargo are possible without being limited thereto, and the utility value as a multi-purpose cargo ship is high.

It is a longitudinal section of a cargo ship concerning one embodiment of the present invention. It is an II line arrow top view in FIG. FIG. 3 is a plan view taken along line III in FIG. 1. It is an enlarged plan view around the deck 14 for a ship. It is explanatory drawing which shows the cargo mixed loading example in the cargo ship of this invention. It is explanatory drawing which shows the cargo mixed loading example in the cargo ship of this invention. It is explanatory drawing which shows the cargo mixed loading example in the cargo ship of this invention. It is explanatory drawing which shows the cargo mixed loading example in the cargo ship of this invention. It is sectional drawing in the cargo ship of the 2 layer deck which is the prior art example 1. FIG. It is sectional drawing in the cargo ship of the 3 layer deck which is the prior art example 2. FIG. It is a partially expanded plan view of the second deck in Conventional Examples 1 and 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lower hold 2 Upper hold 3 2nd deck 4 Pontoon hatch 5 Upper deck 6 Hatch 7 Hatch cover 13 Fixed pillar 14 Decks for ship 20 Deck hold 21 First deck hold 22 Second deck hold

Claims (4)

A cargo ship having a hatch for the upper cargo on the upper deck, dividing the upper cargo and the lower cargo on the second deck, and attaching a pontoon hatch to the opening of the second deck,
A cargo ship characterized in that a deck deck is provided by attaching a deck for the deck on the second deck on the left and right sides of the hatch. The cargo ship according to claim 1, wherein the deck hold is two-story. 3. A cargo ship according to claim 2, wherein pillars are attached to the hatch side end of the deck hold at intervals in the hull length direction, and the hold deck is fixed by the pillars. 4. The cargo ship according to claim 3, wherein the pillar includes a fixed pillar and a movable pillar.