JPS608680Y2 - semi-floating extension rod - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a semi-floating extension rod for deploying a seaweed net and installing the encircling net below the sea surface.

The most common type of stretch rod for seaweed nets that has been known in the past has a structure in which the entire interior is made into an air chamber by closing both ends of a straight synthetic resin pipe, and the air chamber provides a large buoyancy. It was a floating extension rod.

Therefore, when a seaweed net is deployed using a floating stretcher rod,
Due to its buoyancy, the seaweed net was installed floating on the sea surface, and seaweed cultivation in this floating state had the following drawbacks.

(1) Floating objects on the sea surface get caught in seaweed nets.

(2) Seaweed buds are washed away due to freshwater damage caused by desalination of the upper layer of sea ice during seedling collection and the budding stage, resulting in huge losses.

(3) The sunlight near the sea surface from February to March is too strong and inhibits the growth of seaweed.

(4) Poor water exchange can cause poor growth and diseases.

(5) Directly affected by waves, which can cause buds to fall off and seaweed to break.

Due to the above-mentioned drawbacks, it is clear that depending on the growing state of the seaweed and the climate conditions, it is more beneficial in terms of the productivity and quality of the seaweed to install the seaweed net below the sea surface.

Therefore, submerged extension rods are currently used as extension rods for installation below the sea surface.The structure of this submerged extension rod is to open both ends of a synthetic resin pipe to make the entire interior a seawater chamber. It was designed to be submerged into the sea in a seawater chamber.

Therefore, when trying to deploy and install a seaweed net under the sea surface using a submerged stretcher rod, it is impossible to use only the submerged stretcher rod because the seaweed net tends to be submerged deep in the sea; In actual use, it was combined with a stretcher rod, or a submerged stretcher rod and a floating ball.

However, when a seaweed net is installed below the sea surface using a combination of a submerged stretcher rod and a floating stretcher rod, the seaweed net on the floating stretcher rod is shallow and the seaweed net on the submerged stretcher rod is deep. This method has a major drawback in that it cannot be installed horizontally, which causes variations in the growth and quality of the seaweed.

In addition, installing a seaweed net under the sea surface using a combination of submerged stretcher rods and floats has the drawback that it requires a large number of equipment such as floats and ropes, and requires a great deal of effort for installation and recovery work. This method has the disadvantage that floating objects on the sea surface get caught in floats and the like, deteriorating the aquaculture environment and affecting the growth and quality of the seaweed.

This project was developed by conducting extensive research in view of the drawbacks of the prior art installation of seaweed nets under the sea surface, as described above, and completed a new structure of stretcher rods that eliminates these drawbacks.The purpose of this project is to: A semi-floating type stretcher rod with a submerged structure equipped with a floating material that allows the seaweed net to be deployed and installed horizontally under the sea surface by using only the stretcher rod, which is beneficial in terms of productivity and quality in seaweed cultivation. It consists in providing the following.

Next, the extension rod of the present invention will be described in detail below with reference to embodiments shown in the drawings.

First, in the configuration of the example shown in FIG. 1, an ear mesh hooking structure 2゜2 consisting of an ear mesh insertion groove 2a and a hooking hole 2b is formed at both ends of a hollow straight pipe 1 made of vinyl chloride resin. Straight pipe 1
A seawater inflow hole 5 is formed in the straight pipe to form a seawater chamber 3 through which seawater flows in, and floating members 4, 4 made of closed-cell foamed plastic are inserted and fixed at both ends of the straight pipe 1, and The overall specific gravity of the extension rod for stretching the seaweed net below the sea surface is set by the floating material 4.

Next, the configuration on the other side of the implementation shown in FIG. 2 is an example of the implementation shown in FIG. In this embodiment, since there is no perforation in the hollow straight pipe 1, it is possible to prevent the strength of the straight pipe 1 from decreasing.

Next, the configuration on the other side of the implementation shown in FIG.
A seawater inflow hole 5 is formed in the fitting part of lb, and a concave surface 1 is formed.
b', 1b' are formed, and the same concave surfaces 1b', 1b are formed.
This embodiment is structurally different from other embodiments in that floating materials 4, 4 are filled and installed in the spacer.

Although the structure of the illustrated embodiment has been described above, the material of the hollow straight pipe 1 is not limited to vinyl chloride resin, and other resins may be used.

Furthermore, the material of the floating material 4 is not limited to closed-cell foamed plastic such as expanded vinyl chloride or expanded polystyrene, but may be any material with a low specific gravity that floats on water, such as polyethylene, polypropylene, urethane rubber, etc. You can.

Furthermore, the ear net hooking structure 2 is not limited to the structure consisting of the ear net insertion groove 2a and the ear net hooking hole 2b, and may be of various structures. As in the embodiment shown in FIG. 2, they may be formed directly at both ends of the hollow straight pipe 1, or as shown in FIG. 3, they may be formed in a separate terminal portion 1a.

Furthermore, if the floating materials 4 are provided at both ends of the hollow straight pipe 1 as in the embodiment, it is preferable because the balance is good and the seaweed net can be deployed and installed stably. When a seaweed net receives the tide, it tilts and tries to float or sway on one side.However, due to the arrangement of the floating materials 4, it does not allow the seaweed net to receive the tide from the side. Since it remains horizontal, its features as a stretcher rod for installation below sea level can be maximized.

However, the arrangement of the waist floating material 4 is not limited to the embodiments, and may be arranged in various manners, and may be arranged either inside or outside the hollow straight pipe 1.

In addition, the overall specific gravity of the stretch rod is such that the seaweed net is placed below the sea surface (15-3
The length of the floating material 4 is adjusted by taking into account the weight and size of the hollow straight pipe 1 and the weight of the seaweed net, etc. to obtain the desired overall shape. This is to set the specific gravity.

Therefore, when attaching the stretcher rod of the present invention to the seaweed net N, the conventional stretcher simply requires holding the hollow straight pipe 1 by hand and hooking the ear net hooking structures 2, 2 to the ear net E of the seaweed net N. Attaching the rods is the same work as the work, and deploying and installing the seaweed net N can be done.

Further, the work of recovering the extension bar can be performed easily as well as the work of installing it.

Next, when the present extension rods are in use, as shown in Fig. 4, the seaweed net N to which the extension rods of the present invention are attached at appropriate intervals is moored to a certain depth D by simply mooring the seaweed nets N with the extension rods P and ropes R.
It can be deployed and installed under the sea surface in a so-called semi-floating state, and because it is not combined with floating extension rods, the seaweed net N can be installed horizontally with almost no change in depth from the sea surface, and it has a straight pipe structure. Since it is a stretcher rod, the stretcher rod is also installed below the sea surface together with the seaweed net N, so that it is not affected by sea surface effects such as being caught by floating objects.

In other words, when the present invention is used, seaweed can be cultivated at a certain depth below the sea surface, so it is distantly related to the benefits listed below in terms of productivity and quality of seaweed.

(1) Floating objects are not caught in the seaweed net N.

(2) If the upper layer of seawater becomes desalinated during seedling collection and the budding stage, the nori buds will be washed away in a short period of time, which will have a serious impact on subsequent production. Since net N can be set up, there will be no damage from fresh water.

(3) Around February to March, the ultraviolet rays become strong at the sea surface, causing the color to fade and lose its luster.However, by submerging the fish to a certain depth and cultivating it, the color and luster improve, and the yield increases.

(4) The seaweed grows well.

(5) Avoid damage from marine pollution such as oil spill damage and red tide damage during the aquaculture period.

(6) Good growth with good water replacement.

(7) Especially when setting up frozen nets, submerging them below the sea surface prevents buds from falling off and seaweed from breaking.

(8) Soft and good-quality seaweed can be obtained.

Since the extension rod of the present invention is constructed as described above, it not only has the effect of allowing the seaweed net N to be deployed and installed under the sea surface by using only the extension rod, but also has the effect that the extension rod is easy to install and retrieve. It is also easy to work with.

In addition, the seaweed cultivation using the stretch rod of the present invention has various beneficial effects in terms of productivity, quality, etc.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view showing an example of the semi-floating extension bar of the present invention, Fig. 2 is a sectional view of the main part showing the other side of the extension bar, and Fig. 3 is an implementation example of the extension bar. FIG. 4 is a cross-sectional view of the main part showing the other side, and is an explanatory view of the use state of the extension rod. 1...Hollow straight pipe, 2...Ear net hooking structure, 3...Seawater chamber, 4...Floating material.

Claims (1)

[Scope of utility model registration request] Ear net hooking structure 2 at both ends of hollow straight pipe 1 made of synthetic resin pipe,
2, and the inside of the straight pipe 1 is made into a seawater chamber 3 by the inflow of seawater.
A semi-floating device characterized in that the straight pipe 1 is provided with a floating material 4 made of a material of low specific gravity, and the overall specific gravity of the stretcher rod for stretching the seaweed net below the sea surface is set by the floating material 4. Expression extension rod.