JPH05284880A - Method for setting up template net for fence net in fixed shore net - Google Patents

Abstract

PURPOSE:To ensure a template net for fence net to be set up in a floating or underwater state without the need for detaching floats by regulating the buoyancy of the buoyancy-regulating floats fitted at specified intervals to the template net. CONSTITUTION:Buoyancy-regulating floats 10 are attached at specified intervals to a template net 7 for fence net set up with mooring ropes 3 and mooring members 2. By regulating the buoyancy of these floats, the template net can be sunk to the sea bottom in a nonfishing season, while, in the next fishing season, the template net can be pulled up to easily attach a fence net thereto.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a type rope which is indispensable for tensioning and fixing a fixed net in the sea, and particularly for attaching a type net (hereinafter referred to as a hand type) for attaching a hand net. It relates to the setting method.

[0002]

2. Description of the Related Art Generally, in order to stretch a fixed net under the sea,
As shown in Fig. 1, attach a required number of floats to a thick rope or wire rope, and float a substantially rectangular rope 1 on a mooring member 2 (for example, sandbag, anchor, concrete block, etc.) installed on the seabed. Tensioned by connecting with a mooring rope 3 and pulling, this rope 1
Set net body 4 inside hand of hand stick rope (button rope) 5
It is attached by connecting with. Furthermore, in order to guide the migratory fish school to the stationary net body 4, a hand net 6 having a length of about 200 m to 1000 m is stretched linearly from the entrance of the stationary net body 4 toward the land side.

This hand net 6 is a thick wire rope or a C.I. P.
R (compound rope), C.I. B. It is attached to a hand mold 7 such as an R (combination rope) in a curtain shape. The hand mold 7 is provided with a large number of floats 8 at regular intervals as in the case of the rope 1, and is tensioned by connecting the mooring member 2 installed on the seabed with a mooring rope 3.

The float 8 is usually a hollow sphere having a diameter of about 36 cm, and its mounting interval varies depending on conditions such as the scale of the hand net, the speed of the tidal current, and the wave condition.
It is about 5 m to 3 m. Seaweeds may adhere to the hand net 6 and a large tidal current resistance may be exerted, and in rough weather, it may sink due to wave resistance and a migratory fish school may pass over it. It has been given excessive buoyancy.

By the way, when damage to fishing gear is expected due to approach of a typhoon or the like, the entire fixed net should be removed and unloaded, but since there is no time to spare, it is best to pull up a part of the fixed net main body 4. It is full, and it is the current situation that the hand net 6 is not able to reach the limit and is damaged every year.
Also, during the suspension of fishing season, the fixed nets are removed, landed, dried and repaired, and then stored until the next fishing season, but the rope 1 and the hand mold 7 are left on the sea for continuous use for several years. Due to the hindrance to the navigation of vessels and the balance with other fisheries, in some areas the floats are removed and submerged under their own weight due to the damage caused by the docking of drift ice.

However, since a large number of floats 8 are attached to the hand mold 7 to impart excessive buoyancy as described above, it is not easy to remove it, and the hand mold 7 should be pulled up in the next fishing season. A large number of floats had to be attached again, resulting in double labor and poor workability.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. In the resting season, the hand mold can be submerged in the seabed without removing the float, and in the next fishing season. Is to pull up from the seabed to give the buoyancy to the float as it was and to attach the hand net easily. Is.

[0008]

As a means for technically solving this problem, the present invention relates to a rope for a hand net stretched by a mooring rope and a mooring member in a stationary net.
The gist of the present invention is to attach the buoyancy adjusting float at a predetermined interval and adjust the buoyancy of the buoyancy adjusting float to selectively position the hand netting rope in the floating or sinking state. Furthermore, in the present invention, a buoyancy fixing float is attached between the buoyancy adjusting floats, and the buoyancy adjusting means of the buoyancy adjusting float is composed of a first valve for intake and exhaust of air and a second valve for supplying and discharging seawater. What is done is the summary.

[0009]

[Operation] The hand net can be removed from the hand form during the suspension of fishing season, and the air in the float for adjusting the buoyancy of the hand type can be evacuated to introduce seawater so that the hand form can be submerged in the sea bottom. Can be pulled up from the bottom of the sea to remove the seawater in the buoyancy adjusting float, and the function of the float can be restored again by introducing air. Therefore, it is not necessary to attach and detach the hand type float each time.

[0010]

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a plan view of a fixed net installed in the sea. A rope is attached to a mooring member 2 installed on the seabed with a mooring rope 3 to connect a substantially rectangular rope 1 that is floated to the surface of the sea as in the conventional case. Then, it is stretched tight by pulling it, and the fixed net body 4 is attached to the inside of the rope 1 by tying it with a button rope (hand stick rope) 5, and further a hand net 6 for guiding the migratory fish group to the fixed net body 4 is fixed net. It is stretched linearly from the entrance of the main body 4 toward the land side.

As shown in FIG. 2, the hand net 6 is attached to a hand mold 7 by hanging it like a curtain through a button rope 9 like a conventional one, and the hand mold 7 has a large number of buoyancy adjusting floats at regular intervals. 10 is attached and is connected to a mooring member 2 installed on the seabed by a mooring rope 3.

As shown in FIGS. 3 and 4, the buoyancy adjusting float 10 is made of synthetic resin or the like in the shape of a hollow rugby ball, has a pair of mounting pieces 11 formed from both ends to the bottom, and has an upper portion. The first valve 12 and the second valve 13 are installed in the lower part so as to be offset from each other in the vertical direction and the horizontal direction by approximately 30 degrees. In other words, the valve is not located directly above or below, and is located at a position that is slightly offset to the left and right when viewed from the front, so that it does not interfere with the attachment to the hand mold 7, and it does not interfere with air or seawater. Considering that it is convenient for putting in and out.

The first valve 12 is for sucking and discharging air in the buoyancy adjusting float 10, and the second valve 13 is for supplying and discharging seawater, which have the same structure. Therefore, the first valve 12 will be described. As shown in FIG. 5, a mounting hole 10a is opened in the buoyancy adjusting float 10, and the first valve 12 is mounted in the mounting hole 10a.
Is fitted and the plug portion 12a is screwed through the packing 14, and a jig such as a screwdriver is applied to the wrench hole 12b to loosen or completely remove it so that the plug can be opened. In some cases, a mesh lid 15 may be provided inside the plug 12a to prevent foreign matter from entering. Note that the configuration of these valves is not limited to the above, and may be a valve that can be opened and closed by operating the handle, such as a faucet or a water stopcock, and the valve mounting position can be changed to an appropriate position other than the above. It is possible.

According to the present invention, the hand mold 7 can be selectively placed in the floating or sinking state by operating the buoyancy adjusting float 10 constructed as described above. That is, in order to settle during the suspension of fishing season, after removing the hand net 6 from the hand mold 7, the first valve 12 and the second valve 13 of the buoyancy adjusting float 10 are opened to release the internal air and allow the seawater to flow in. Then, the buoyancy of the buoyancy adjusting float 10 is lost, and the hand mold 7 can be sunk to the seabed by its own weight. At this time, if the hand mold 7 touches the seabed, it may be rubbed and damaged by a tidal current, etc. Therefore, by adjusting the amount of seawater flowing into the buoyancy adjusting float 10, some buoyancy is left, or between the buoyancy adjusting floats 10. By attaching some conventional floats 8 to the above, it keeps the hand mold 7 slightly lifted from the seabed when it is submerged, and prevents the hand mold 7 from being damaged due to friction with the seabed. can do.

On the other hand, in the next fishing season, the hand mold 7 is hooked by an anchor-shaped hook or the like and a part of the hand mold 7 is pulled up on the ship to drain seawater from the second valve 13 of the buoyancy adjusting float 10 and the first valve. If the first valve 12 and the second valve 13 are closed after the air is sucked from 12 and the inside of the hollow is completely replaced with air, the initial buoyancy can be applied to the buoyancy adjustment float 10 again.

By repeating such a work, it is possible to restore the buoyancy to all the buoyancy adjusting floats 10 attached to the hand mold 7, and to float the hand mold 7 to stretch it to the original position. it can. Therefore, the hand net 6 stored in the hand mold 7 can be attached again.

Incidentally, it is also possible to attach a buoyancy adjusting float to the model rope 1 to selectively raise and lower it like the hand mold 7. In this case as well, the whole buoyancy adjusting float may be attached, but it is allowed to sink. Depending on the water depth, a conventional buoyancy fixed float (normal float) may be attached and used in part.

[0018]

As described above, according to the present invention,
A buoyancy adjustment float is attached to the hand type to which the fixed net is attached.By adjusting the buoyancy of this buoyancy adjustment float, the hand type can be selectively kept in a floating or sinking state. It is not necessary to attach and detach the buoyancy adjusting float every time, and the work is remarkably simplified and the efficiency is improved.

[Brief description of drawings]

FIG. 1 is a plan view showing a state in which a fixed net is stretched in the sea.

FIG. 2 is a schematic side view of the same.

FIG. 3 is a front view of a buoyancy adjusting float used in the present invention.

FIG. 4 is a side view of the same.

FIG. 5 is a sectional view of a first valve portion.

[Explanation of symbols]

1 ... Type rope 2 ... Mooring member 3 ... Mooring rope 4 ...
Stationary net body 5 ... Button rope 6 ... Hand net 7 ...
Hand type 8 ... Float 9 ... Button rope 10 ... Buoyancy adjustment float 10a ... Mounting hole 11 ...
Mounting piece 12 ... First valve 12a ... Plug portion 1
2b ... Wrench hole 13 ... Second valve 14 ... Packing 15 ... Mesh lid

Claims (3)

[Claims] 1. A buoyancy adjusting float is attached to a rope for a hand net stretched by a mooring rope and a mooring member in a fixed net at a predetermined interval, and the buoyancy of the float is adjusted to adjust the buoyancy. A method for tensioning a rope for a hand net in a set net, comprising selectively placing the rope for a net in a floating or sinking state. 2. The method for tensioning a rope for a hand net in a stationary net according to claim 1, wherein a buoyancy fixing float is attached between the buoyancy adjusting floats. 3. The buoyancy adjusting means of the buoyancy adjusting float has a first valve for intake and exhaust of air and a second valve for supplying and discharging seawater.
The method for tensioning a rope for a hand net in a stationary net according to claim 1 or 2, which is the valve according to claim 1.