JP2654465B2 - Double-layer deckboat for trawl - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is intended to reduce the labor required for transporting fish catches after freezing brine between fish holds when fisheries caught in marine fishing grounds are frozen and stored in a fish hold in a ship. The present invention relates to a double-layer deck ship for a purse seine which can be significantly reduced.

[Conventional technology]

In general, trawlers that use trawl nets go to marine fishing grounds, so they are generally equipped with two insulated fish holds in the upper and lower tiers. The layout of such a cool fish hold, the contents of the equipment, and the outline of the freezing and preservation work will be described with reference to the drawings.

FIG. 5 is an explanatory side view showing an arrangement of two upper and lower stages of the cold storage fish hold in one half along the longitudinal direction of the dragnet ship, and FIG. 6 is an explanatory plan view showing a part of the upper deck similarly cut away. .

As shown in FIG. 5, a trawl ship generally has an upper deck 1 at an upper portion and a second deck 2 at a lower portion, and the upper deck 1 and the second deck 2 are provided.
A plurality of lower frozen fish holds 5 are formed between the second deck 2 and the floor 4 therebelow. There is usually an additional space 7 between the floor 4 under the second deck 2 and the bottom 6 of the ship. With such two decks 1, 2 above and below, this type of ship is called a double decker. As shown in FIG. 6, the inter-deck insulated fish hold 3 and the lower frozen fish hold 5 of such a double-layer deck ship for a trawl net are respectively arranged on both sides along the longitudinal outer plate 8 of the ship, Many are adjacent in the vertical direction one after another as shown in the figure, but there are some places that are not adjacent to each other due to the structure of the ship or the installation of other necessary equipment. As shown in FIG. 6, the lower lower frozen fish hold 5 has a widened portion 5a which is wider than the upper deck cold storage fish hold 3 toward the center of the ship. An upper deck hat 9 with a lid is provided between the upper deck 1 and the intercooled fish hold 3, and an inter-fish hatch 10 is also provided between the intercooled fish hold 3 and the lower frozen fish hold 5. In addition, each lower frozen fish hold 5 is provided with a catch hatch 11 with a lid for catching catches between the widened portion 5a and the second deck 2.

In the fish hold, there is a brine frozen fish hold, which is equipped with a brine pipe for injecting and discharging brine for functionally rapidly freezing the catch into the room, and it was frozen in this brine frozen fish hold. There is an insulated fish hold in which a refrigerant tube for circulating the refrigerant for keeping the fish cold at low temperatures is laid along the indoor walls, ceiling, and floor. Is equipped with a refrigerant tube in addition to the brine piping, and is used as a cold storage / brine frozen fish hold. Generally, the freezing temperature is -10
C. to -25 C., and the cooling temperature is -40 C. to -50 C.

In a conventional double deck deck for a purse seine, the lower frozen fish hold 5
Was used as a frozen fish hold for cooling and the upper deck intercooled fish hold 3 was used as a dedicated fish hold for cooling. Each hatch 9,10,1
1 is usually provided with two lids that are vertically overlapped. In the fish hold arrangement as described above, the upper deck hat 9 has a heat-insulating lid on the lower side (inside) and a water-tight upper lid on the upper side (outside). The hatch 10 between fish holds had a heat-insulating lid on the lower side and a wooden upper lid on the upper side. The catch caught by the trawl net is put into the lower frozen fish hold 5 from the second deck 2 and then frozen from the hat 11 and injected into the lower frozen fish hold 5 in the brine. The cargo handling equipment provided on the ship carried the hatch between the fish holds 10 and the upper deck 9 to the upper deck 1 and carried it from the upper deck hat 9 to the cold storage fish hold 3 between the decks to keep it cool. When the deck cooler 3 is full, the lower frozen fish hold 5 is emptied.
Was used successively for each lower frozen fish hold 5 to use the frozen fish for brine freezing and subsequent cooling for the catches caught next.

However, with regard to the frozen storage operation in the conventional fish hold arrangement as described above, the transfer of catch from the lower frozen fish hold 5 to the deck cold storage fish hold 3 requires that the effective size of the inter-fish hold hatch 10 and the upper deck hatch 9 be a ship. Because of the limited construction and the limited effective cooling area of the refrigerant tube on the fish hold ceiling, it is almost impossible to rely on manual labor, so it is necessary to transfer There was a drawback that required a lot of effort.

[Problems to be solved by the invention]

An object of the present invention is to solve the drawbacks of the above-described conventional technology and to provide a double-layer deck ship for a trawl net so that labor for transporting fish catches between fish holds can be significantly reduced with respect to insulated cooling of fish catches. And

[Means for solving the problem]

As a result of various studies, the present inventor has found that at least one of the upper deck cold storage fish holds 3 and the lower fish hatch 10 between the lower fish hold and the lower fish hold 10 are made to be completely cold-water-tight and then cooled. The present invention has been accomplished by finding that the above-mentioned problems can be solved by using a combined brine frozen fish hold.

Hereinafter, a double layer deck ship for a purse seine according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a cross-sectional view of an example of a double-layer deck ship for a trawl net according to the present invention, in which one half along the longitudinal direction is cut in the width direction of the ship between decks, which is a cold storage / brine frozen fish hold. FIG. 2 is a plan view showing a part of an example of a hatch between fish holds having a cold-waterproof structure made of metal, and FIG. 3 is an XX line of a portion A in FIG. FIG. 4 is a perspective view of an example of a cold-resistant rubber packing.

In the double-layer deck boat for a trawl net according to the present invention, although the lower frozen fish hold 5 in the lower row is all the same as the cold frozen brine hold, it is the same as the conventional one, but the upper deck intercooled fish hold 3 is used.
At least one of them is configured as a cool / brine frozen fish hold. The most preferable is all the inter-cooled fish because the effect of labor reduction and the effect of maintaining the quality also appear as described later as the number of the cold frozen fish hold occupying more of the plurality of intercooled fish holds 3 is described below. Hold 3 is to be configured as a cool / brine frozen fish hold.

In the present invention, at least one lower frozen fish hold is provided below the cold hold fish deck 3 (hereinafter sometimes referred to as a cold hold between frozen deck 3 ′), which is the above-mentioned cold frozen dual-use frozen fish hold. 5 are arranged in a substantially overlapping state. On the other hand, in order to carry out the insulated catches from the lower frozen fish hold 5, at least one inter-fish hatch 10 is arranged for each lower frozen fish hold 5 so as to be substantially overlapped thereabove. The cold storage fish hold 3 is disposed at a position substantially overlapping with the upper deck bee 9 on a vertical line. Therefore, between the frozen holding deck 3 'and the lower frozen holding 5 at least one of which is disposed below the holding deck 10, a catch 10 is always provided as shown in FIG. . In addition, the lid of this inter-hatch bee 10 is constructed in a special structure for the case where low-temperature brine is injected into the upper-cold frozen-deck inter-hatch 3 'to be used for freezing the catch. ing. That is, the main part is made of metal so as to withstand the water pressure of brine, and is provided with a hatch lid 10 'between fish holds having a metal cold-waterproof structure which is configured to exhibit sufficient sealing performance even at low temperatures. It is.

The beehive hatch 10 'with the above-mentioned metal cold-water tight structure
Will be described as an example. This hatch lid 10 'is a metal plate 10.
a ', a packing groove 10b', a reinforcing material 10c ', and a cold-resistant rubber packing 10d'. Metal plate 10a 'is bee lid 1
As shown in FIG. 2, a main part of the metal plate 10a 'has a fastening member 10aa' which is engaged with a peripheral part of a hatch hole between fish holds. The shape that matches the shape of the hatch hole between the fish holds is common, and the example in the figure is square, but it may be circular or any other shape. Packing groove 10
b 'is a groove member in which a flat bar 10hbb' is welded to one edge of the angle iron 3ba 'as shown in FIG.
Is welded in a state where the back surface is in contact with the periphery of the back surface. The reinforcing member 10c 'is fitted between the opposite sides of the center of the metal plate 10a' in the packing groove 10b 'which is oppositely located on both sides of the back surface of the metal plate 10a', as shown in FIG. It is fixed by welding to both surfaces and the back surface of the metal plate 10a which are in contact with each other in a state. For example, when several reinforcing members 10c 'are provided, there are places where they cross each other as shown in FIG. 2. In this place, one of the reinforcing members 10c' is cut or welded, or one of the two reinforcing members 10c 'has a half width. Conventional means such as cross-assembly welding with slits are used. The cold-resistant rubber packing 10d 'is mounted in the packing groove 10b' having a shape as shown in FIG. 4 and formed as described above. This cold-resistant rubber packing 10d presses against a projection 10 ″ as shown in FIG. 3 formed on the periphery of the hatch hole between fish holds, and sufficiently seals even in a brine of -40 to -50 ° C. For example, nitrile-butadiene rubber is used as the material, and the hatch cover 10 'is constructed of a metal cold-waterproof structure as described above.

The structure of the fish deck 3 'between the cold deck and the frozen deck is the hatch lid between the fish holds.
Except for 10 ', there is no difference in principle from the conventionally used frozen frozen fish hold that was configured in the lower frozen fish hold 5. In other words, heat insulation is installed inside the fish hold, and a metal plate is stretched all over the surface to prevent the penetration of brine, and further inside the fish hold to keep the inside of the fish hold at low temperature. Refrigerant tube 12 is laid on the inner wall, ceiling and floor (up to this point, the configuration is the same as that of a frozen fish hold exclusively for cold storage except that the plate on the heat insulating material is a metal plate). A brine injection tube for injecting and discharging cold brine into the fish hold
13 and a brine discharge tube 14 are provided through the side wall. Further, there may be a case where the lower frozen fish hold 5 is large and a plurality of inter-deck insulated fish holds 3 which are dedicated fish coolers are arranged above the lower frozen fish hold 5. In this case, since one or more fish holds 10 are provided for each lower frozen fish hold 5, it is guaranteed that the frozen catches will be discharged through the inter-deck insulated fish hold 3 as described later. In order to increase the degree of freedom in selecting the inter-deck insulated fish hold 3 through which cargo is to be loaded from the lower stage, depending on the stock status of the plurality of inter-deck insulated fish hold 3 on the upper side, the inter-deck insulated fish hold 3 arranged above is provided. It is preferable to provide an inter-hatch wasp 10 between as many fish holds as possible. However, the upper deck intercooled fish hold 3 and the lower lower frozen fish hold 5 are arranged in an almost vertically overlapping state except for places that are unavoidable due to the structure of the ship or the need to install equipment. Is common.

The upper deck 1 is provided with a derrick boom 15, and the tip hook 15 b of the wire 15 a is passed through the upper deck hatch 9 between the respective deck cool fish holds 3 and into the inter deck cool fish hold 3, and further to the fish hold. It is lowered through the hatch 10 into the lower frozen fish hold 5 so that the catch can be unloaded.

(Operation)

In the double-layer deckboat for the purse seine according to the present invention, the freezing and keeping of the catch can be performed independently in the upper and lower stages. That is, in the upper row, the frozen and decked fish hold 3 'of the inter deck cooler 3 is used as the brine frozen fish hold and the cooler fish hold by closing the hatch lid 10' between the fish holds. It can be carried by deck boom 15 through deck hatch 10. Due to its structure, the hatch lid 10 'never leaks the brine downward. The frozen catch is transported by the derrick boom 15 to the deck cooler fish hold 3, which is a fish hold for exclusive use of cool storage at the same upper stage, and is frozen and stored. Since the transfer of the frozen catch is between the same upper stages, the work is easy. When the inter-deck insulated fish hold 3, which is a dedicated fish hold for cold storage, becomes full, the catch is kept in the frozen deck fish hold 3 '. The above operation becomes more comfortable as the number of insulated and inter-deck fish holds 3 'in the upper inter-deck insulated fish hold 3 increases, and if the upper stage is all insulated and frozen inter-deck fish hold 3', there is no such transfer work. . In addition, it is important to have an effect of preventing quality deterioration due to exposing the frozen catch to outside air at the time of transfer. On the other hand, in the lower stage, since the lower frozen fish hold 5 is all a cold-holding / brine frozen fish hold, there is no need to transfer frozen catch, and each fish hold is used as a cold-hold fish hold after brine is frozen. The catch of the catch to the lower frozen fish hold can be carried through the upper deck hatch 9 and the fish hold hatch 10 using the derrick boom 15 if the upper deck cold hold 3 is empty, If not empty, second deck 2
It can also be carried in from the input hatch 11 of. In this way, keeping the catch cold can be performed completely independently of each other in the upper and lower stages. And unloading after returning to port,
It is also possible to unload the frozen inter-decker fish hold 3 'from the lower frozen fish hold 5 below, or to use the hatch lid 10' between them.
And can be unloaded by the derrick boom 15.

〔The invention's effect〕

The double-layer deck boat for a trawl net according to the present invention is characterized in that at least one of the cold storage fish holders for the upper deck is used as a cooling / brine freezing fish hold, and the lid of the hatch between the fish holds between the lower freezing fish hold and the lower one is made of metal. The cold and water-resistant construction makes it possible to perform brine freezing on the upper and lower tiers completely independently of each other.Therefore, there is no transfer of catch between the upper and lower tiers for cooling after freezing, Not only is the labor for such transfer greatly reduced or eliminated, but also the quality degradation due to exposing the frozen catch to the open air can be significantly or completely eliminated. Furthermore, since the freezing in the upper and lower stages can be performed independently, the degree of freedom in selecting the order in which the catch is carried in and frozen is greatly increased due to the stability of the ship and various reasons. The industrial value is very large.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an example of a double-layer deck ship for a trawl net according to the present invention, in which one half along the longitudinal direction is cut in the width direction of the ship between decks, which is a cold storage / brine frozen fish hold. FIG. 2 is a plan view showing a part of an example of a hatch between fish holds having a cold-waterproof structure made of metal, and FIG. 3 is an XX line of a portion A in FIG. FIG. 4 is a perspective view of an example of a cold-resistant rubber packing, and FIG. 5 is a side explanatory view showing an arrangement state of two stages of a frozen fish hold in one half along a longitudinal direction of a dragnet ship, FIG. 6 is an explanatory plan view showing a part of the upper deck cut away. 1 ... Upper deck 2 ... Second deck 3 ... Cold storage fish hold between decks 3 '... Cold storage fish hold which is also a frozen frozen fish hold (frozen deck fish cold storage and cold storage) 4 ... second Floor under deck 5 ... Lower frozen fish hold 5a ... Wide section 6 ... Bottom 7 ... Space 8 ... Outer plate 9 ... Upper deck hatch 10 ... Hatch between fish holds 10 '... Metal cold weather Fish-catch hatch lid 10a ': Metal plate 10aa': Clamping bracket 10b ': Packing groove 10ba': Angle iron 10bb ': Flat bar 10c': Reinforcement material 10d ': Cold-resistant Rubber packing 10 ″… Projecting body 11… Inlet hatch 12 …… Refrigerant tube 13 …… Brine injection tube 14 …… Brine discharge tube 15 …… Derick boom 15a …… Wire 15b …… Hook

Claims (2)

(57) [Claims] An upper deck (1) is provided at an upper portion, and a second deck (2) is provided at a lower portion, and a plurality of inter-deck insulated fish holds (3) are provided between the upper deck (1) and the second deck (2). ) And the second deck (2)
Between the lower floor (4) and the lower frozen fish hold (5)
Each of which is along the length of the ship and the lower frozen fish hold (5)
The upper deck hatch (9) with a lid is also provided between the upper deck (1) and the deck cold storage fish hold (3). Between the cold storage fish hold (3) and the lower frozen fish hold (5), there is an inter-fish hold hatch (10) with a lid, and for each lower frozen fish hold (5), the widened portion (5a) and the In a double-layer deck boat for a trawl provided with input hatches (11) each having a lid for catching fish between the two decks (2), all of the lower frozen fish hold (5) and the inter-deck insulated fish At least one of the claws (3) is a cold-cooled brine frozen fish hold, and at least one lower frozen fish hold (5) is provided below the deck-cooled fish hold (3 '), which is a cold-cooled brine frozen fish hold. It is arranged in an almost overlapped state, and at least one or more inter-hatch wasps (10) are located on the upper side of each lower frozen fish hold (5). It is disposed at a position substantially overlapping with the plate hatch (9) on the vertical line, and is an inter-deck cold storage fish hold (3 '), which is the above-mentioned cold storage / brine frozen fish hold, and a lower frozen fish hold (5) therebelow. The double-layer deck ship for a trawl net, characterized in that the lid of the hatch (10) between the fish holds is constructed of a metal cold-resistant structure. 2. An inter-fish catch washer lid (10 ') having a metal cold-water tight structure has a fastener (10aa') on the periphery thereof which is engaged with a peripheral portion of the inter-fish catch hatch hole. Metal plate (10
a ′) and a groove member in which a flat bar (10bb ′) is welded to one edge of an angle iron (10ba ′) is connected to the metal plate (10ba ′).
a ') a packing groove (10b') which is welded to the periphery of the back surface with the back surface in contact therewith; and the packing groove (10b ').
Of the metal plate (10a ') opposed to the center of the metal plate (10a').
c ′) and a cold-resistant rubber packing (10d ′) mounted on the packing groove (10b ′) and pressed against and sealed to a projection (10 ″) protruding from the periphery of the hatch hole between fish holds. 2. The double deck deck hold for a trawl net according to claim 1, wherein the deck deck comprises: