JPH07107881A - Middle-steps type submersible crawl - Google Patents

Abstract

PURPOSE:To obtain a middle-steps type submersible crawl capable of simply installing and carrying out submersible treatment in good tide-through property. CONSTITUTION:A submersible rope 3 is bound to the four corners of the bottom of a crawl and submersible rope 3 is inserted through a fixed anchor 4 sinking and forming the bottom on the sea bottom into a positioning means consisting of a pipe 7 having length reaching onto a ship using a pulley 6 fixed to the fixed anchor 4 as a supporting point and a binding pipe 8 to position the crawl so as to freely enable lifting and lowering and a slipping anchor 9 is engaged with the submersible rope 3 near the positioning end and, simultaneously, a pulling up means consisting of a flag buoy and a mark is engaged with the slipping anchor and floats 12 sufficient for floating target loaded weight are attached around the upper part of the circumference face of the crawl 1 and simultaneously, the upper four corners are bound to the four corners of rope frame 13 and the lower end of an anchor rope 16 (having length determined by relationship with water depth) bound to the rope frame 13 is bound to a fixed anchor 18 sunk and formed in the sea bottom and the upper part of the crawl 1 is positioned.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cage for small-scale fish, mainly flounder cultivation, suitable for inner bays.

[0002]

2. Description of the Related Art Fish cages that have been used for fish farming have been stood up on the sea floor in a relatively shallow area, so the tidal flow is poor and the discharge of residual food and excrement in the fish cage is poor. In the natural state, there was a defect that water quality deteriorates and adversely affects growth.

[0003]

SUMMARY OF THE INVENTION In view of the above-mentioned prior art, the present invention is a so-called middle-layer type, in which the bottom of the cage is raised from the seabed, and the tide is good, and the fishing boat is easily installed on a small fishing boat with two vessels. It is intended to provide a middle-layer type floating cage that can be subjected to floating and sinking treatment.

[0004]

In the middle-layer type floating and floating cage according to the first aspect of the invention, the bottom surface of the cage is vertically positioned by a positioning means via a fixed anchor that is sunk on the seabed, and a discard anchor is attached near the positioning end. At the same time, a lifting means is linked to the discard anchor, and a float enough to raise the weight to be borne by the subject is provided around the peripheral surface of the cage, and the upper four corners are positioned by fixed anchors that are sunk on the seabed. It consists of

According to the second aspect of the present invention, there is provided a middle-layer float-and-sink cage according to the first aspect of the present invention, in which a feeding hose attached with a marker is erected at the center of the cage.

Here, the positioning means is a single pipe for guiding a rope guided by a pulley to a ship by using the pulley as a support point, and a short binding pipe that cooperates with the pipe and the tip of the pipe. And a group of short blocks having rope insertion holes and sufficient joint pressure receiving surfaces at the upper and lower ends.

[0007]

The positioning means is such that the rope attached to the bottom of the cage is bound at its tip so that it can be restrained and released freely, and the float attached around the upper surface of the cage is the target load including the adult fish in the cage. Raise a heavy cage to the surface of the sea.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to one embodiment as shown in FIG.
As shown in FIG. 2, a rectangular parallelepiped cage 1 forming a required volume has a bottom frame 2 provided around the bottom surface thereof, and floating and sinking ropes 3 are tied to the four corners of the bottom frame 2 and positioned outside the four corners. A fixed anchor 4 consisting of a sandbag with the required weight is sunk on the seabed,
A pulley 6 is fixed to the other end of the cage fixed rope 5 having one end fixed to the fixed anchor 4, and the floating rope 3 is fixed to the pulley 6.
While guiding the floating and sinking rope 3 through the pipe 7 of the required length (the length from the position where the pulley 6 contacts the pulley 6 in relation to the water depth) to the binding pipe 8 at the end of the pipe 7. The floating and sinking rope 3 taken out from the tying pipe 8 is tied together with the tying pipe 8 at the tip of the pipe 7, and two ropes are gathered at each two adjacent corners so that the required length margin can be seen from the tip of the tying end. The rope is tied to the throw-away anchor 9 at the point where the throw-away anchor 9 is used as a lifting means.
0 is attached, and a sign 11 such as a flag is attached to the upper end of the bonten rope 10. On the other hand, on the upper part of the peripheral surface of the cage 1, a necessary number of buoys 12 sufficient to raise the weight of the target burden such as adult fish weight and frame weight based on the culturing gait are provided. A rope formwork 13 is provided at a position where the upper part of the rope can be stably supported, corner floats 14 are attached to the four corners of the rope formwork 13, and four corners of the cage 1 are connected by connecting ropes 15. Anchor ropes 16 are diagonally outwardly bound to the four corners of the rope formwork 13 and have a length reaching the seabed at a distance of three times the water depth in a plane projection distance from the four corners. Upper part of 16 (near the rope form 13)
Cushion float 17 is attached to the bottom of the cage, and the lower end of the cushion float 17 is tied to a fixed anchor 18 consisting of a sandbag, and the hoisting auxiliary ropes (not shown) connected to the four corners are erected at the center of the upper surface of the cage 1. Along with raising the rope, a feeding hose 19 of a required length is provided upright along with the rope, and a mark (not shown) is attached to the upper end.

The middle layer type floating and sedimentation cage a thus constructed is
In the state shown by the phantom line in Fig. 2, fry (primarily flounder fry) was released to cage 1, and after the escape prevention treatment, two boats faced opposite sides of cage 1, and each vessel was In two pipes 7 pulled up from two adjacent corners, when the floating and sinking rope 3 is pulled up at the tip of the pipes 7, the cage 1 supported by the fixed anchors 4 at each corner is used as a support point to gradually store the cage 1. If it is retracted and sinks, and the floating and sinking rope 3 is bound to the tip of the pipe 7 together with the tying pipe 8 at the required position, the cage 1 is positioned in the middle position in the sea, and the discard anchor 9 is discharged from the ship to the sea. , Each pipe 7 is shown in FIG.
As shown in, it lies on the seabed and is kept in a stable state without being affected by waves. In addition, since the upper part of the cage 1 is supported by the rope formwork 13 via the cushion float 17 by the anchor rope 16, it is not easily affected by waves and the stable posture is maintained. Therefore, the fry in the fish cage grows by the feeding from the feeding hose 19 without being stressed, and the residual food and excrement excrement are discharged well from the bottom mesh so that the fish in the fish cage are discharged. Since the water quality is always maintained in the same way as the natural condition in the sea, the condition of the adult fish is good and the yield is improved.

Next, the case of capturing adult fish will be explained. At the time when a certain aquaculture period has passed and the adult fish is reached, 2
By pulling up the bonten ropes 10 under the sign with each ship, and releasing the binding of the floating and sinking ropes 3 at the ends of the two pipes 7, the cage 1 will float to the sea surface due to the buoyancy of the float 12. Adult fish are captured appropriately.

The middle-layer floating and sedimentation cage a of the present invention does not require a crane ship or diving work.
It is economically efficient because it can be caught with a small fishing boat. As a business base, the fixed anchors 18 that sink the cage a are shared, and a plurality of small anchors are installed and operated. It is something. The positioning means for the cage 1 is not limited to the combination of the pipe 7 and the tying pipe 8. In the case of the pipe 7 alone, the floating and sinking rope 3 is tied in a bump shape at the tip of the pipe 7 and positioned. Further, instead of the pipe 7, it is also possible to apply an assembly of short block bodies (not shown) having insertion holes for the floating and sinking rope 3 and sufficient joint pressure receiving surfaces at the upper and lower ends.

[0012]

As described above, according to the middle layer type floating cage according to the present invention, it can be installed in a light boat with two small fishing boats, and since the middle layer can be cultivated in a well-tied state, the yield of the adult fish is high, Moreover, since the cage can be expanded to a profitable point in small pieces, there is an effect that small-scale open sea aquaculture can produce profits that are not inferior to large-scale cages.

[Brief description of drawings]

FIG. 1 is a plan view of a main part of a middle layer type floating and sedimentation cage a according to the present invention.

FIG. 2 is a front view of a main part in FIG.

[Explanation of symbols]

 1 cage 3 float rope 4 fixed anchor 5 cage fixed rope 6 pulley 7 pipe 8 bundling pipe 9 discard anchor 10 bonten rope 11 sign 12 floats 13 rope formwork 14 corner float 15 connection rope 16 anchor rope 17 cushion float 18 fixed anchor 19 Feeding hose a Middle-rise floating sediment

Claims (2)

[Claims] 1. A bottom surface of a cage is positioned by a positioning means so as to be able to move up and down through a fixed anchor that is sunk on the seabed, a discarding anchor is attached near the positioning end, and a lifting means is linked to the discarding anchor. At the upper part of the peripheral surface of the cage, a float is installed to float the target weight, and the upper four corners are positioned by fixed anchors that are submerged on the seabed. A middle-rise floating / sinking cage, characterized in that the cage can be floated by the buoyancy of the float by releasing the positioning means. 2. The middle-layer type floating and sedimentation cage according to claim 1, wherein a feeding hose with a marker attached is erected in the center of the cage.