JP2004350593A - Layered culture basket - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make the passage of water good and to enable an area for a living site of a culture object to be enlarged by reducing a dead space of a shelf at each layer in a cylindrical culture basket. <P>SOLUTION: Supporting frames 1 are arranged at two or more layers, and an outer surrounding 6 composed of a net and installed in the outside of the supporting frames 1 is attached. The shelf 7 is formed by attaching a Y-shaped reinforcing crosspiece 2 to the supporting frame 1 at each layer, and further attaching a net on the crosspieces 2. Storing chambers 8 for the culture object at two or more layers are formed of the outer surrounding 6 and the shelves 7. Three hanging ropes 9 are connected to sites for attaching the reinforcing crosspieces 2 at the outer periphery of the supporting frames 1. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a multi-stage cultured basket used for scallop, oyster, pearl, shellfish such as abalone, sea urchin and the like.
[0002]
[Prior art]
Conventionally, as this type of multi-stage culture cage, as described in Japanese Patent Application Laid-Open No. 2001-120105, a circular support frame arranged in a plurality of stages and a mesh provided outside the circular support frame of each stage are used. And two reinforcing bars attached to the circular support frame so that the cross section connected by a synthetic resin string or the like passes through the center, and attached to the circular support frames of each stage. A shelf made of mesh material forming a plurality of storage chambers in the outer periphery, a feeding / discharging portion for aquaculture, which is formed to be openable and closable on the trunk of the outer periphery, and an outer periphery of the circular support frame And four suspension ropes connected to the reinforcing bar mounting portion are known.
[0003]
In order to use this multi-stage culture cage, for example, during the cultivation, the semi-adult shellfish is thrown into the storage room by opening the input / discharge section, and after closing the input / output section, it is lifted up with a hanging rope and multi-stage culture is performed. The cage is submerged and cultured. In addition, shellfish after cultivation are taken out for thinning in the next step, intermediate breeding, for example, ear cultivation, transfer to a rough cultivation basket, or takeout for shipping after cultivation. Lift the culture cage from the sea to ship or land. Then, the input / discharge section is opened, the multi-stage cultured basket is turned sideways, and the shells are dropped and taken out.
[0004]
[Patent Document]
JP 2001-120105 A (Page 2, 0002,0006, FIGS. 1 and 2)
[0005]
[Problems to be solved by the invention]
By the way, in order to breed healthy and high quality shellfish etc., from the viewpoint of plankton intake, the tide should be improved as much as possible, the area of the living area per piece should be increased, Since stress such as swaying, shock, and the like adversely affects growth, it is important to minimize stress as much as possible.
[0006]
As described above, in the conventional multi-stage culture cage, the two reinforcing bars are crossed in a cross shape, and the crossing portions are connected by bundling with a wire, and the ends of the two reinforcing bars are circularly supported. Due to the adoption of the structure attached to the frame, the portion above and adjacent to the reinforcing bar on the shelf is not stable and is not suitable for shellfish habitats. The part is dead space.
[0007]
For example, in the case of main scallop cultivation, a shellfish that has grown to a diameter of about 2.5 cm is put in the early fall and grown until it becomes about 6.5 to 7 cm in the next spring, but the average size is 4.5 cm in the growth stage during this period. Considering that the shells cannot be inhabited just above the reinforcing bar on the shelf and the portion that hangs on the reinforcing bar, 4.5 cm left and right of the reinforcing bar is dead space. Under these conditions, assuming that the diameter of the support frame is 50 cm, the area per shelf is 25 × 25 × 3.14 = 1962.5 square cm, and the area of the dead space is 4.5 × 50 × 2. -4.5 x 4.5 = 429.5 square cm, and about 22% of the shelf area is dead space.
[0008]
As described above, the conventional multi-stage culture cage is connected, for example, by tying the intersection of the two reinforcing bars with a synthetic resin string or the like, but is not fixed. When a load is applied to a portion of the frame to which the reinforcing bar is not attached, the frame may be deformed.
[0009]
In addition, in the case of a multi-stage culture cage, the center of gravity of the multi-stage culture cage, particularly when the multi-stage culture cage is lifted from the sea to the ship or land, moves from the center of the support frame due to sway caused by the tide, lifting, and movement of the shell. Everyday things happen on a daily basis. However, since the conventional multi-stage culture cage has four suspension ropes connected to the reinforcing bar attachment area on the outer periphery of the support frame, stable suspension with shells, etc., to be cultured is not possible. difficult.
[0010]
Further, when aquaculture cages undergo severe changes due to sudden changes in the direction of the tide in the sea, swelling, aging, etc., one suspension rope loosens and tends to return to its original state by its own weight. At this time, a shock occurs when the loosened rope is stretched again. This movement of the chestnut stresses the shellfish and adversely affects their growth. For this reason, it is desirable that the number of hanging ropes be small.
[0011]
SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and reduces the dead space of shelves as much as possible to improve the tide and increase the area of the living quarters to be cultivated. It is an object of the present invention to provide a continuously cultivated cage having a large strength of a circular support frame and a large holding force of the shape of the support frame, as well as excellent stability.
[0012]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a circular support frame arranged in a plurality of stages, an outer periphery formed of a mesh provided outside the circular support frames of each stage, and a circular support frame attached to the circular support frame. A Y-shaped reinforcing bar, a shelf made of a mesh fabric attached to the circular support frame of each of the above-mentioned steps and forming a plurality of storage rooms in the above-mentioned outer enclosure, and a trunk formed on the above-mentioned outer surrounding body And a three suspension rope connected to a reinforcing bar mounting portion on the outer periphery of the circular support frame.
[0013]
In the above configuration, the Y-shaped reinforcing bar can be integrally formed by press working or the like, or the ends of the branches extending in three directions are fixed to the circular support frame, while the base ends of the three branches are fixed. Can be fixed. Then, the center of the Y-shaped reinforcing bar can be positioned substantially at the center of the circular support frame.
[0014]
In addition, the Y-shaped reinforcing bar can be formed by using three rods or wires, and in this case, the base ends of the branches extending in three directions are bound by wires and bound by wires. Post-synthetic resin can be used for fixing using another fixing means such as coating, or can be directly fixed by welding.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0016]
As shown in FIGS. 1 to 4, circular support frames 1 are vertically arranged in a plurality of stages at desired intervals. As shown in FIG. 3, a Y-shaped reinforcing bar 2 is attached to the support frame 1 of each step by folding back the ends of the branch portions 2a extending in the three directions. As shown in FIG. 2, the reinforcing bar 2 is formed using three wires, and is formed in a Y-shape by arranging the base ends thereof at an angle of 120 degrees and welding them.
[0017]
Outside the support frame 1, a mesh, in the illustrated example, a net made of synthetic fiber, is attached in a connected state with an outer envelope 6 having a cylindrical body 3, a circular bottom 4 and a circular ceiling 5. ing. In the body 3, a net-like object, a circular shelf 7 made of synthetic fiber netting as shown in FIG. Mounted and supported by.
[0018]
Although not shown, the body 3 of the outer enclosure 6 is provided with a loading / discharging unit for loading the culture target into the storage room 8 and discharging the culture target from the storage room 8. Regarding the form of the input / discharge section for the aquaculture, regardless of the shape of the butt-shaped vertical fissure formed in the body 3 of the outer enclosure 6 corresponding to each storage room 8, Any one can be selected as long as it is formed so as to open and close all the storage chambers 8 in a double-door manner.
[0019]
The intermediate portions of the suspension ropes 9 are connected to the mounting portions of the reinforcing bars 2 on the outer periphery of the support frame 1 of each stage, respectively. They are bundled almost on the center line. A floating ball (not shown) is attached to the upper end of the hanging rope 9 to float the multi-stage culture cage as necessary, and a weight (not shown) is attached to the lower end of the hanging rope 9 as needed. .
[0020]
In order to use the multi-stage farming cage constructed as described above, the input / discharge section of the culture target is opened, and the culture target such as semi-adult shellfish is stored in each storage room 8 in a predetermined quantity, and the input / discharge section is provided. close. Then, the multi-stage farming cage storing the culture object is submerged in the sea and the upper end of the hanging rope 9 is connected to a raft (not shown) moored on the sea, or a floating ball is attached to the upper end of the hanging rope 9. Support under the sea. In this state, the cultivation target such as semi-adult shellfish is cultivated. However, in the above-described multi-stage cultivation cage, since the reinforcing bar 2 is formed in a Y-shape, the dead space of the shelf is small, and the cultivation target living area is not occupied. The area can be widened.
[0021]
Assuming that the same condition as that of the conventional culture basket in which the two reinforcing bars are crossed in a cross shape is the same, the area per shelf 7 is 25 × 25 × 3.14 = 1962.5 square cm, The area of the dead space per stage is 4.5 × 25 × 3-4.5 × 4.5 = 317.25 square cm, and the dead space is about 16% of the area of the shelf 7, and the living space for aquaculture The area of the ward can be increased by 7% compared to the conventional aquaculture cage. Further, for example, when a semi-adult scallop (usually 8 to 9 cm) is put into a cultivation basket for main cultivation, a conventional cultivation basket in which two reinforcing bars are crossed in a cross shape is 型. It is customary to put a total of 8 per shelf on two shelves in the space of the above. However, in the above-mentioned multi-stage farming cage, three shelves are calculated in one third of the space, and Nine pieces can be inserted, which means that the efficiency is improved by 12.5% in terms of ratio, and in fact, there is an effect of improving the work efficiency more than the expansion rate of the area of the living quarters to be cultured.
[0022]
In addition, the above-described multi-stage culture cage is formed in a cylindrical shape as a whole, and the number of the suspension ropes 9 is 3/4 and the number of the reinforcing bars 2 is 3/4 as compared with the conventional culture cage. Not only can production costs be reduced, but also uniformity can be affected by water currents at all angles, making it less likely to be adversely affected by tidal currents, stabilizing in the sea, reducing weight, reducing seagrass There is an advantage that marine organisms such as barnacles are less attached.
[0023]
In addition, even if the support frame 1 receives a load from a portion other than the mounting portion of the reinforcing bar 2, the base portion of the branch portion 2 a of the reinforcing bar 2 is welded and integrated in the above-described multi-stage cultured cage. Therefore, the reinforcing bar 2 is supported and hardly deformed.
[0024]
In addition, since the above-described multi-stage culture cage has three suspension ropes, it is possible to stably suspend the multi-stage culture cage after raising the culture even if there is a shift in the center of gravity when pulling the cage from the sea. It is stable against sudden changes in the direction of the tidal current, swelling, swelling due to aging, etc.
[0025]
【The invention's effect】
As described above, according to the present invention, the dead space of the shelf can be reduced as much as possible to improve the tide and the area of the living area to be cultivated can be widened. Efficiency can be improved, the strength of the circular support frame, and thus the shape retention force of the support frame, can be increased, and furthermore, continuous culture with excellent stability can be provided.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a continuous culture basket according to an embodiment of the present invention.
FIG. 2 is a plan view of a support frame of each stage.
FIG. 3 is a perspective view showing a state in which a reinforcing bar is attached to a support frame.
FIG. 4 is a plan view showing a state where a shelf is attached to a support frame.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Support frame 2 Reinforcing bar 2a Branch 3 Trunk 4 Bottom 5 Ceiling 6 Surrounding 7 Shelf 8 Storage room 9 Hanging rope

Claims (4)

A circular support frame arranged in a plurality of stages, an outer periphery formed of meshes provided outside the circular support frames of each stage, a Y-shaped reinforcing bar attached to the circular support frame, A shelf formed of netting which is attached to the circular support frame of each step and forms a plurality of storage chambers in the outer enclosure, a feeding / discharging section for aquaculture objects formed in the trunk of the outer enclosure; A multi-stage farming cage comprising three suspension ropes connected to a reinforcing bar mounting portion on the outer periphery of a support frame. The ends of the branches of the Y-shaped reinforcing bar extending in three directions are fixed to a circular support frame, the base ends of the three branches are fixed, and the bases to which the three branches are fixed are fixed. The multi-stage culture cage according to claim 1, wherein the end is located substantially at the center of the circular support frame. The continuous culture basket according to claim 1 or 2, wherein the base ends of the three branches of the Y-shaped reinforcing bar are fixed by an appropriate fixing member. The continuous culture basket according to claim 3, wherein the base ends of the three branches of the Y-shaped reinforcing bar are fixed by welding.

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