JPH0416997Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a hook for securing fishing nets forming fish cages.

(Conventional Technology) In recent years, there has been a push to shift from fishing for harvesting to fishing for production, and aquaculture fishing using live cages has become popular.

In conventional aquaculture fisheries, in order to form fish cages, as shown in FIG. The lower end was tied with a rope or the like, and floats 4, 4... were used to float the entire fishing net.

(Problem to be solved by the invention) By the way, the hook 2 mentioned above is generally made of iron, and as a result, corrosion due to seawater progresses over time, and the fishing net wears out before it reaches the end of its lifespan. There was a fear that the fish would be destroyed and the fish would escape.

The present invention was devised in view of the above-mentioned conventional problems, and an object of the present invention is to provide a hook for fixing a fishing net, which prevents corrosion of the hook and extends its service life as much as possible.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides fishing net mooring hooks that are partially embedded and fixed in concrete foundation blocks installed on the seabed.
It consists of an iron main body as a core material and a resin coating layer covering the main body, and the gist is that the resin coating layer has a protrusion at a portion embedded in the concrete foundation block.

In the present invention, the main body may have an integral structure or a divided structure, and its shape may be arbitrary. Furthermore, in the present invention, it goes without saying that the main body portion covered with the resin coating layer can be expanded to include the portion buried in the concrete foundation. Further, although the method for providing the resin coating layer is not specified, it is preferable to integrally mold the resin coating layer with the main body by injection molding. In this case, the main body formed in a predetermined shape in advance is assembled into a mold, the necessary parts thereof are exposed to the molding space, and the resin is injected. As for the type of resin, it is desirable to select a hard resin such as nylon or glass fiber reinforced resin. Moreover, the resin coating layer is
For example, it can be finished with anti-corrosion treatment such as Teflon.

(Function) In the hook for fixing a fishing net having the above structure, the main body portion is isolated from seawater by the resin coating layer, so corrosion resistance against seawater is improved and the life of the hook itself is significantly extended.

(Example) Hereinafter, an example of the present invention will be described based on the accompanying drawings.

In FIGS. 1 and 2, reference numeral 11 denotes a hook according to the present invention, which is fixed to a concrete foundation 10 buried in the seabed. The hook 11 has a U-shaped head 12 and an L-shaped leg 13.
3 is embedded in the concrete foundation 10 to prevent it from coming off the concrete foundation 10 (FIG. 1). Therefore, the hook 11 is connected to the head 12.
It consists of a main body 14 made of iron that integrally forms a leg portion 13 and a resin coating layer 15 that covers the main body 14 on the head 12 side. A portion of the resin coating layer 15 extending toward the leg portion 13 is located within the concrete foundation 10, so that the entire head 12 exposed from the concrete foundation 10 is covered with the resin coating layer 15. (Figure 2).

The resin coating layer 15 is integrally molded with the main body 14 by injection molding, so that it is in close contact with the main body 14 and can permanently maintain this close contact state. During injection molding, the main body 14, which has been previously formed into a predetermined shape, is assembled into a mold (not shown), its head 12 is exposed to the molding space, and resin (here, nylon) is injected under a predetermined pressure. Note that this resin coating layer 15 is provided with protrusions 15a, threads (projections) 15b, and the like.

With such a configuration, the hook 11 can be easily obtained by manufacturing the main body 14 from iron in advance and then integrally molding the resin coating layer 15 on the main body 14. A large number of the hooks 11 thus obtained are set in a formwork (not shown) for obtaining the concrete foundation 10, and are fixed to the concrete foundation 10 when concrete is poured. When pouring concrete, the hook 11 is positioned on the formwork using the protrusion 15a provided on the resin coating layer 15 as a guide, and this protrusion 1
Make sure to pour concrete up to part 5a. The concrete foundation 10 is then buried in the seabed, as shown in Figure 6 above, and the fishing net 3 is tied to the heads 12 of the numerous hooks 11 exposed from the concrete foundation 10, and the fish cage is completed. do. However, the exposed head 1 of the hook 11
Since the entire hook 2 is covered with a resin coating layer 15, corrosion of the iron main body 14 due to seawater is suppressed, and the life of the hook 11 is extended as much as possible.

In addition, when the resin coating layer 15 is provided with the thread 15b as in the above embodiment, the thread 15b is
5b in the concrete foundation 10, the slippage (relative slippage) of the resin coating layer 15 with respect to the main body 14 is more reliably prevented, and the reliability of the hook 11 is increased.

Also, depending on how the fishing net is tied, the hook may be 1
There is a risk that the end of the rope will hit the upper surface of the concrete foundation 10 in the head 12 of the head 12, and the rope will be worn out early. Using the nut A fixed on 15b, attach the resin plate B to the head 12 in advance.
By attaching the plate B to the concrete foundation 10, the upper surface of the concrete foundation 10 can be covered with the plate B, and it is possible to buffer the impact of the rope and prevent its wear and tear.

Further, in the above embodiment, the hook 11 provided with the resin coating layer 15 is attached to the concrete foundation 10.
However, in some cases, it may be necessary to partially replace the existing hook, and in this case, as shown in Fig. 3, the hook 11 should be fixed to a small concrete block 20 in advance. This concrete block may be connected to an existing concrete foundation 10, for example, by underwater concrete casting.

Further, the hook 1 has a T-shaped leg 21, as shown in FIGS. 4 and 5, for example.
1a, or a hook 11b consisting of a cruciform leg 22 and a rotating piece 23. Further, the small concrete block may have an outer circumferential thread 24, as shown in FIG.

(Effects of the invention) As explained above in detail, according to the fishing net tethering hook according to the invention, the corrosion resistance against seawater is improved by the resin coating layer, and the life of the hook is significantly extended. The presence of the resin coating layer protrusion prevents the resin coating layer from sliding relative to the main body, which has the effect of improving durability and reliability. The corrosion resistance against seawater has been improved, and the life of the hook itself has been significantly extended.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the overall shape and mounting manner of the fishing net tethering hook according to the present invention, Fig. 2 is an enlarged sectional view of a part of the hook, and Figs. 3 to 5 are FIG. 6 is a cross-sectional view showing an example of the use of this hook, and a perspective view schematically showing how the cage is constructed. 10... Concrete foundation, 11, 11a, 1
1b...Hook, 14...Main body, 15...Resin coating layer, 20, 20a...Small concrete block.

Claims (1)

[Scope of utility model registration request] A hook for fishing net tethering, which is partially embedded and fixed in a concrete foundation block installed on the seabed, consists of an iron main body as a core material and a resin coating layer covering the main body, and the resin coating layer is made of concrete. A fishing net tethering hook characterized by having a protruding part in a part embedded in a basic block.