JPH0551066U - Buoyancy adjustable float - Google Patents

Abstract

(57) [Summary] [Purpose] In the fixed net fishing method, float the float easily and quickly while it is still attached to the rope, and submerge it in the sea. A float having a hollow structure in which the inside is divided into a plurality of chambers by a plurality of partition plates, and two or more water or air are provided at relative positions of the float main body at a body part or a end plate portion close to the end plate. The inlet and outlet are provided so that water can be easily and quickly discharged or injected into the float.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a buoyancy-adjustable float that is used in the field of fisheries, particularly in the field of set-net fisheries installed offshore and can easily and quickly perform ups and downs.

[0002]

[Prior Art]

 Floats used for fishing nets such as dragnets, gillnets, fixed nets, lamenets, and nets, as well as nets for aquaculture, trunk nets, and cages are It plays a role of effectively expanding the net mouth, keeping the net normal, stretching the side net normally, or keeping the mesh of the net correct, and also confirms the placement of the fish net. Is also playing. Furthermore, in the case of aquaculture nets and cages, the float is given a floating and sinking function so that the aquaculture nets and cages can be appropriately submerged in the sea when the weather conditions are severe. (See Japanese Examined Patent Publication No. 52-14197)

[0003]

[Problems to be solved by the device]

 The conventional aquaculture device described in Japanese Patent Publication No. Sho 52-14197 aims to freely control ups and downs by an adjustable buoyancy chamber having a seawater inlet and an air inlet. However, this adjustable buoyancy chamber forms a floating body together with the fixed buoyancy chamber, which is another buoyancy chamber, and is different from a float alone, and the seawater inlet / outlet is a normal opening. However, if the device is greatly inclined due to waves due to weather conditions, etc., the air entering from the air inlet / outlet at the top of the device may escape from the seawater inlet / outlet, making it impossible to control the ups and downs of the device.

Conventionally, in the fixed net fishing method, especially in Hokkaido, the float was removed from the rope from the middle of November to the end of the fishing season, and only the side rope was sunk to the seabed. The rope of the side body was pulled up from the seabed, and the float was attached to the rope. However, it is not easy to attach and detach a large number of floats in severe wind and snow, and this solution has been desired. Therefore, as a result of intensive studies in view of such conventional problems, the present inventor has found that the above problems can be solved by installing a water or air inlet / outlet of the float at a specific position. The invention has been reached.

[0005]

[Means for Solving the Problems]

 That is, according to the present invention, there is provided a float-sink type float having a hollow structure, and the inside of which is divided into a plurality of chambers by a plurality of partition plates, and having at least two water or air inlets and outlets. Adjustable floats are provided. In the present invention, a buoyancy adjusting type float is preferably provided in which a water or air inlet / outlet is located at a portion of the body close to the end plate, or at the end of the end plate, which is located at a relative position of the float body. Further, according to the present invention, there is provided a buoyancy adjusting type float having a hollow structure, which has at least two inlets / outlets for water or air.

[0006]

[Action]

 The buoyancy-adjustable float according to the present invention is provided with two or more water or air inlets and outlets at a portion of the body of the float body having a hollow structure, which is close to the end plate part or at the end part of the float main body. It is characterized by By using the buoyancy-adjustable float of the present invention, it is possible to carry out the difficult work of attaching and detaching a large number of floats to the side ropes in the cold sea, especially in the fixed net fishing method in cold regions such as Hokkaido. Without doing so, the sinking and floating of the facility can be performed easily and quickly, which can greatly contribute to the rationalization of the set net fishing method.

As shown in FIG. 6, a stationary net is formed by tying a large number of floats 1 to a side body rope 7 to form an enclosure 8 of the side body, and its key points are fixed in water by anchors. A stationary net is constructed by connecting a net 9 inside the enclosure 8 of the side body. Furthermore, by controlling the amount of water introduced into the float, it is possible to adjust the buoyancy of the float, thereby avoiding or minimizing the influence of wave forces and waves (do not shake by waves). It is possible to prevent adverse effects on aquaculture, for example.

[0008]

【Example】

 Hereinafter, the present invention will be described in more detail based on the illustrated embodiments, but the present invention is not limited to these embodiments. 1 and 2 show an embodiment of a buoyancy-adjustable float according to the present invention, in which water or air is placed at a relative position of the float 1 at a portion of the body 2 of the float 1 near the end plate 3. Doorways (hereinafter referred to as the doorways) 4, 4'are provided. The inside of the float 1 is divided into a plurality of rooms by a partition plate 5 as an example of which is shown in FIG. 5, and the partition plate 5 has a plurality of holes for improving the circulation of air or water. 6 is provided. Providing a plurality of the inlets and outlets 4 and 4'of the buoyancy adjusting type float 1 is preferable because the sway of the float 1 can be reduced when water or air comes in and out, and the water or air can be quickly put in and out. Further, if valves or cocks are provided at the inlets and outlets 4 and 4 ', the operation at the time of taking in and out water or air can be facilitated.

Further, since the inlets and outlets 4 and 4'having the same structure are provided at the target positions of the float main body, they can be freely used as the outlets or the inlets. When the water in the float 1 is discharged, after opening the inlets and outlets 4 and 4 ', the rope 7 and 7'on one side of the float is hung on the lifting machine to lift the float, and the inlet and outlet 4' By draining water from the outlet and closing the inlets and outlets 4 and 4 ', the float can have buoyancy. Here, the entrances and exits 4 and 4'are provided at a portion of the body portion 2 near the end plate 3 (see FIGS. 1 and 2) or at a target position of the float body of the end plate 3 (see FIGS. 3 and 4). Therefore, the water in the float can be completely discharged. When water flows into the float, the float can be lifted in the same manner as above, and the water can be poured into the float from the inlet / outlet 4'to sink the float. Further, FIG. 7 shows a float having a hollow structure, and shows a state in which water is partially introduced into the float 1 through the inlets and outlets 4, 4 ′. In this way, by introducing a part of water into the float 1, it is possible to adjust the buoyancy of the float 1 and also to resist the wave force, that is, to prevent it from largely moving due to the wave, such as scallops. The aquaculture facility / equipment can be kept undisturbed.

[0010]

[Effect of the device]

 As described above, the buoyancy-adjustable float according to claim 1 of the present invention has a strong float structure and is not damaged by vibrations and shaking due to waves and the like. Since it can be easily discharged or injected, it is possible to sunk the rope to the bottom of the sea with the float attached to the rope in the fixed net fishing method, and attach and detach a large number of floats to the rope on the sea in the severe cold region. There is no need, and operations can be performed easily and quickly. Also, by introducing some water into the float, it is possible to adjust the buoyancy and float the facility such as the fixed net at a predetermined position. The buoyancy-adjustable float of the present invention can be used not only for fixed net fishing but also for nets for aquaculture, trunk nets, cages, etc. to rapidly sink the nets or cages into the sea when the weather conditions change suddenly. it can.

[Brief description of drawings]

FIG. 1 is a schematic plan view of an embodiment of the present invention.

2 is a cross-sectional view of FIG.

FIG. 3 is a cross-sectional view of another embodiment of the present invention.

FIG. 4 is a cross-sectional view of another embodiment of the present invention.

FIG. 5 is a diagram of an example of a partition plate provided on the body.

FIG. 6 is an explanatory diagram of an example of a fixed network.

FIG. 7 is an explanatory view showing another example of the present invention.

[Explanation of symbols]

 1 Float 2 Body 3 End plate 4, 4'Water or air inlet / outlet 5 Partition plate 6 Hole 7, 7 'Rope 8 Side body enclosure 9 Net

Claims (3)

[Scope of utility model registration request] 1. A float-sink type float having a hollow structure and having a plurality of compartments for partitioning the interior thereof, wherein the float has at least two water or air inlets and outlets. Floating force adjustable float. 2. A water or air inlet / outlet is provided at a portion of the body close to the end plate, or at the end of the end plate, and is installed at a relative position of the float body.
Buoyancy adjustment type float described. 3. A buoyancy adjusting type float having a hollow structure, which has at least two inlets / outlets for water or air.