JPH09275846A - Water crawl - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water crawl which forms a large migration space as a crawl main body is made large, and is not affected by waves to give no fluctuation to fishes in the crawl. SOLUTION: In an external shell body 1 which holds spherical shape and mounted with a net body, an air bag 3 which gives a large migration space and is connected by a connection cord 2 is arranged, and the underwater weight of the external shell body 1 is balanced with the buoyant force of the air bag 3. The amount of air supplied into the air bag 3 is adjusted to easily make the crawl sink and float.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to cages used for fish culture, and more particularly to so-called aqua cages used in water.

[0002]

2. Description of the Related Art In general, as a cage for aquaculture, a cage in which the main body of the cage is suspended from a raft floating on the surface of the water is used. According to this, the entire weight of the cage is supported by the raft. Since it depends on the strength of the raft, it is difficult to increase the size of the raft, and the cage moves under the influence of waves, which adversely affects the growth of the fish.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and a larger strolling space than that of the conventional one can be obtained, a larger size can be achieved, and further, it is not affected by waves. The purpose of the present invention is to provide an underwater cage that does not shake the fish in the cage.

[0004]

In order to achieve the above object, the present invention adopts the following constitutions. That is, the main constitution of the present invention is to hold the spherical shape, and the outer shell body to which the net body is adhered,
A spherical air bag which is arranged inside the outer shell with a migratory space and which is connected to the outer shell by a connecting cable and in which air is enclosed, and which extends upward from the top of the outer shell. And an entrance / exit passage part.

(Operation) The underwater cage is used by being submerged in water. The air bag counteracts the underwater weight of the entire cage with buoyancy. When this buoyancy and the weight of the cage are balanced, the cage remains stationary in the water and is installed at any depth. The fish in the cage move around in the migration space formed between the outer shell and the air bag.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an underwater cage according to the present invention will be described with reference to the drawings. 1 to 4 show an embodiment thereof. That is, FIGS. 1 to 3 show the overall configuration of the present underwater cage S, and FIG. 4 shows the detailed configuration of each part thereof.

1 to 3, the underwater cage S of the present embodiment is shown.
Is an outer shell body 1 having a spherical shape, an air bag 3 in the center of the outer shell body 1 that is filled with air and connected by a connecting cable 2, and upward from the top of the outer shell body 1. It comprises an extending and retracting passage part 4 and a plurality of auxiliary floating bodies 5 arranged on the sides of the outer shell 1, and further includes an anchor part 6 connected to the bottom of the outer shell 1. In this configuration, a migratory space K is formed inside the outer shell 1 with the air bag 3.

The detailed structure of each part will be described below. Outer shell 1 The outer shell 1 includes a skeleton body 10 that maintains a spherical contour, and a mesh body 11 that is attached to the outside or inside (in this embodiment, inside) of the skeleton body 10. The framework 10 is FPR
As shown in FIGS. 4 and 5, a horizontal loop muscle 10a which is formed of a loop loop made of steel and forms a spherical contour, and a vertical loop muscle 1 which also forms a spherical contour and intersects the horizontal loop muscle 10a.
It consists of 0b. The material of the loop bar 10 does not exclude metal, particularly steel rod. The mesh 11 is
A fish net woven of synthetic resin fibers is used, and is attached and fixed to the inside of the skeleton body 10 with an appropriate fixing tool. Then, a perforated synthetic resin sheet (trade name “Holy sheet”) is further attached to the inside of the fish net 11. According to this holy sheet, the bait sprinkled in the water is unlikely to go out, the loss is small, it is economical, and the environmental pollution can be suppressed.

Connecting cable 2 / air bag 3 The air bag 3 occupies the center of the inside of the outer shell 1 and is connected to the outer shell 1 by the connecting wire 2. (Air bag 3) The air bag 3 has a hollow spherical shape and is made of a hard rubber or synthetic resin sheet, and compressed air is enclosed in the air bag 3 to generate buoyancy. A curtain 3a for attachment is attached to the lower part, and the connecting rope 2 is fixedly installed via the curtain 3a for attachment. The mounting curtain 3a is not an essential matter and can be omitted as appropriate. Further, the air bag 3 can be manufactured with a hard body, and in this case, a hard synthetic resin body is preferable, but a metal body is not excluded. In the case of being made of the hard material, the curtain body 3a is omitted, and the connecting rope 2 is directly fixed to the projection provided on the surface of the hard spherical body. When the air bladder 3 is made of a hard material, it is easy to project a large number of shelves on the surface of the air bladder 3, and a room partitioned by the shelves is provided, and the shelves and the rooms are provided with fish. Can be made to live and function as a so-called fishing reef. When the air bag 3 is made of a soft material, a separate shelf or room is attached to the air bag 3. With the arrangement of the air bag 3, the center of buoyancy thereof is located above the center of gravity of the outer shell 1 on the vertical line. The air is introduced into the air bladder 3 through an air hose 13 which has one end connected to an intake port attached to the air bladder 3 and the other end extending above the water. (Connecting cable 2) The connecting cable 2 connects the lower part of the air bag 3 and the inner bottom surface of the outer shell 1 to the lower connecting wire 2a, and the upper connecting wire 2b that connects the upper part of the air bag 3 to the inner upper surface of the outer shell 1. Have. The lower connecting rope 2a is important for the present invention and transmits the buoyancy of the air bag 3 to the outer shell 1 and opposes the gravity of the outer shell 1. The upper connecting cord 2b is given an appropriate tension to prevent the air bag 3 from moving. The upper connecting rope 2b may be a compressible member so-called a rod body depending on the case.

[0010] out passage portion 4 and out passage portion 4 is formed in a cylindrical shape the mesh member mainly,
It extends above the water from the top of the outer shell 1. A plurality of floating bodies 15 are arranged at the upper end portion to make the entrance / exit passage portion 4 self-supporting. Fish are put in and taken out and feed is supplied through the entrance / exit passage 4. Therefore, the entrance / exit passage 4 is opened / closed by a narrowing operation of the mesh body by a known mechanism (not shown).

Auxiliary Floating Body 5 The auxiliary floating body 5 is composed of a floating body 17 and a suspension line 18, and the ends of the suspension line 18 are attached to the side portions of the outer shell 1 and are arranged at equal intervals in the circumferential direction. In the present embodiment, they are arranged at 8 places (45 ° intervals), but the number is arbitrary.
In the disposition of the auxiliary floating body 5, it is preferable that a slight tension is introduced into the suspension rope 18, so that the sum of the total buoyancy of the floating body 15 and the buoyancy of the air bladder 3 opposes the underwater weight of the outer shell 1. Will be taken into consideration. The buoyancy of the floating body 17 is extremely smaller than that of the air bladder 3.

The anchor portion 6 The anchor portion 6 is fixed to the bottom portion of the outer shell 1 at one end thereof, and to the other end of the tension rope 20,
An anchor 21 anchored to the bottom of the water.

The underwater cage S of this embodiment is used by being placed in water in a predetermined state. That is, the anchor 21 of the anchor portion 6 is attached to the bottom of the water, and the suspension rope 1 of the auxiliary floating body 5 is attached.
A predetermined tension is introduced between the No. 8 and the floating body 17, and the No. 8 rises vertically. The fish migrate in the migration space K formed between the outer shell 1 and the air bladder 3, and the bait is thrown in through the entrance / exit passage 4. When a shelf is formed on the outer peripheral surface of the air bag 3, the shelf serves as a fishing reef and provides an appropriate space for fish culture. The bait introduced from the entrance / exit passage 4 does not escape to the outside due to the holy sheet of the outer shell 1, and there is no environmental pollution. Furthermore, the residual food is concentrated on the bottom of the outer shell 1 and the removal work is easy.

The underwater weight of the underwater cage S is almost not loaded by the outer shell body 1, and the buoyancy of the air bag 3 lifts the outer shell body 1 upwards through the connecting cable 2a to increase the weight of the outer shell body 1. Oppose.
As a result, the power of the water cage S is balanced. When the underwater weight of the outer shell 1 and the buoyancy of the air bladder 3 are in balance, the underwater cage S stops in the water and is installed at a free depth. As a result, the present underwater cage S can obtain a large depth, can prevent sunburn, and can cultivate excellent cultured fish. Needless to say, it is possible to culture in shallow water. In addition, during the feeding operation and the collecting operation of the food, the floating from the water can be easily performed by adjusting the air amount to the air bag 3.

The present invention is not limited to the above-described embodiment, but various design changes can be made within the scope of the basic technical idea of the present invention as follows. In the entrance / exit passage part 4, the floating body 15 is not particularly necessary, and may be composed of only a net body. The auxiliary floating body 5 is not particularly necessary and may be omitted as appropriate.
In this case, adjust the total weight of the main water cage S with the air bag 3
Done by

[0016]

According to the underwater cage of the present invention, it is possible to counteract the underwater weight of the cage by the air bag and reduce the apparent weight of the cage. As a result, it is possible to increase the size of the cage. . Moreover, since this underwater cage is self-sustaining in water, it is not affected by waves on the water and provides a good environment for fish. Furthermore, the main water flow cage is installed at a free depth by adjusting the amount of air in the air bag. When installed in deep water, sunburn can be prevented, and good cultured fish can be raised.

[Brief description of drawings]

FIG. 1 is a sectional view showing an entire embodiment of an underwater cage of the present invention.

FIG. 2 is a side view thereof.

FIG. 3 is a plan view thereof.

FIG. 4 is a side view of a framework of the outer shell.

[Explanation of symbols]

S ... underwater cage, K ... migratory space, 1 ... outer shell, 2 ... connecting rope, 3 ... air bag, 4 ... entrance / exit passage

Claims (4)

[Claims] 1. An outer shell body, which has a spherical shape and is covered with a net body, and air which is arranged inside the outer shell body so as to have a migratory space and which is connected to the outer shell body by a connecting cable. An underwater cage comprising a spherical air bag in which is enclosed, and an entrance / exit passage extending upward from the top of the outer shell. 2. The underwater cage according to claim 1, wherein the amount of air supplied in the air bag is freely adjusted. 3. The underwater cage according to claim 1, wherein a shelf-shaped projection is provided on the outer periphery of the air bag to form a fishing reef. 4. The underwater cage according to claim 1, wherein an auxiliary floating body including a floating body that floats on the water surface and a suspension line that connects the floating body and the outer shell is arranged on the outer periphery of the outer shell.