JPH0244489B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for erecting a frame for a seaweed cultivation raft.

Conventionally, as a method for cultivating seaweed, a large number of U-shaped raft frames are lined up vertically at intervals, and both sides of the adjacent raft frames are tied together with an upper rope and a lower rope, and the lower rope binding part A widely used method for cultivating seaweed is to assemble an aquaculture raft by attaching floats nearby, and to stretch seaweed nets at the bottom of both sides of the raft frame of the aquaculture raft.

In this type of seaweed cultivation method, in order to set up the aquaculture raft at a predetermined position on the sea, the aquaculture raft can be assembled and installed at a predetermined position on the sea, or the aquaculture raft can be assembled on land and then installed. The method is to install it at a predetermined location on the sea. However, no matter which installation method is used, the current situation is that each U-shaped raft frame is erected one by one vertically on the sea surface by hand, and the work required to erect the raft frames is minimal. So 2
It took three people, took a long time, and was inefficient.

In view of the current situation, the inventors of the present invention have conducted intensive studies on an efficient method for erecting aquaculture rafts using U-shaped raft frames, and have installed a raft near the upper rope binding part of the U-shaped raft frame. The present inventors have discovered that by attaching an auxiliary float for adjusting the frame posture, a series of raft frames can be erected from a lying position all at once and the frames can be quickly erected, and the present invention has been completed.

Hereinafter, the method of the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a partially cutaway side view showing one embodiment of the method of the present invention, and FIG. 2 is a perspective view showing an example of an aquaculture raft installed by the method of the present invention.
In order to assemble the aquaculture raft, first, a large number of U-shaped raft frames 1 are prepared. As this U-shaped raft frame 1,
Sealed tubes made of synthetic resin-coated metal tubes, glass fiber-reinforced synthetic resins, etc. are used. U-shaped raft frames 1 are lined up at regular intervals, and the upper parts of both sides 11 and 11' of adjacent raft frames 1 are tied together with upper ropes 2 and 2', and the lower parts are tied together with lower ropes 3 and 3. ′,
Each U-shaped raft frame 1 is connected.

In addition, both sides of the raft frame near the lower rope binding part 1
The main floats 4, 4' are attached to the outer ropes 1, 11' or the lower ropes 3, 3' with ropes. These main floats 4, 4' hold the raft frame 1 of the aquaculture raft in a vertical position.
It is intended to be floated at a suitable position on the sea surface, and floats made of synthetic resin foam, synthetic resin hollow bodies, etc. are used. In this way, the aquaculture raft is assembled.
This aquaculture raft may be assembled on land or at sea.

Next, the aquaculture raft is installed at a predetermined position on the sea. In this offshore installation, in shallow sea areas, anchor ropes 7, 7' are strung on pillars 6, 6';
It can be installed by tying both ends of the lower ropes 3, 3' of the aquaculture raft to the aquaculture raft 7', but in a deep place in the sea, an anchor can be used instead of the vertical pillars 6, 6'.

In addition, when installing the aquaculture raft, as shown in Fig. 1, one end of the upper ropes 2, 2' connecting the raft frame 1 is given a certain amount of slack. are tied to the ends of the lower ropes 3, 3' or to the anchor rope 7', and the series of raft frames 1 are floated on the sea surface 8 in a prone state in the same direction, that is, in the direction of the anchor rope 7'.

Thus, the auxiliary floats 5, 5' are attached to both sides 11, 11' of the raft frame near the upper rope binding part or to the upper ropes 2, 2'. This auxiliary float is for adjusting the attitude of each U-shaped raft frame 1 floating on the sea surface in a prone state, and is made of synthetic resin foam, synthetic resin hollow body, etc. . By selecting the buoyancy and the mounting position of the auxiliary floats 5, 5', the position of the upper rope binding part of the raft frame 1 on the sea surface is maintained at a position even slightly higher than the position of the lower rope binding part. Thereby, the raft frame is maintained in a position where it can be easily erected. The auxiliary floats 5, 5' function as described above,
If no auxiliary float is used, both sides 1 of the raft frame 1
1 and 11' sink diagonally into the sea, making it impossible to maintain the raft frame in the above condition. In addition, since the auxiliary floats 5 and 5' are often adjusted in their mounting position or removed later, they can be easily attached and detached by clipping them to the raft frame or upper rope, tightening bands, tying strings, etc. It is preferable to keep it available.

After adjusting the attitude of the raft frame by attaching the auxiliary floats 5, 5', one end 21,
21' is pulled in the direction opposite to the direction in which the raft frame 1 is laid down, that is, in the direction of the anchor line 7 shown by the arrow. Then, both sides 11, 11' of the series of raft frames 1 rotate upward around the lower rope binding part, and the series of raft frames 1 stand up all at once. Therefore, one end 21 of the upper rope 2, 2',
When 21' is tied to the ends of the lower ropes 3, 3' or to the anchor rope 7, each raft frame 1 stands vertically on the sea surface and does not fall down. In this way, the aquaculture raft is installed. The auxiliary floats 5, 5' may be removed after the aquaculture raft is installed, or may be left attached.

This aquaculture raft has 9 seaweed nets as shown in Figure 2.
are stretched at the lower part of both sides 11, 11' of the raft frame at a position submerged below the sea surface, and seaweed is cultivated.
The seaweed net 9 may be stretched during assembly before the aquaculture raft is installed.

Therefore, in order to dry out the seaweed net 9 in order to prevent adhesion of various algae and bacteria in seaweed cultivation, it is sufficient to move the seaweed net 9 to the vicinity of the upper rope binding part as usual. Furthermore, by using the method of the present invention, the seaweed net 9 can be dried out in the following manner, which is different from the drying method described above. That is, when assembling or after installing the aquaculture raft, the seaweed net 9 is attached to both sides 11, 11' of the raft frame near the upper rope binding part.
to be set up. At this time, the auxiliary floats 5 and 5' are left attached, and the seaweed net 9 is attached to a series of raft frames 1.
Adjust the rope so that it lies face down and is submerged below the sea surface. Then, seaweed is cultivated with the raft frame 1 laid down, and when the seaweed net 9 is dried out,
By pulling one end 21, 21' of the upper rope, the series of raft frames 1 are raised all at once. As the raft frame 1 is erected, the seaweed net 9 is dried out from the sea to the sea.

As detailed above, according to the method of the present invention, a large number of U-shaped raft frames are tied together with upper and lower ropes, the main float is attached near the lower rope tie part, and the main float is attached near the upper rope tie part. An auxiliary float is attached, and with this auxiliary float, both sides of the series of raft frames floating on the sea surface in a prone state are slightly upward, and the position of the upper rope tie is higher than the position of the lower rope tie. Therefore, when one end of the upper rope is pulled to raise a series of raft frames all at once, there is less resistance and only a small pulling force is required, and the U-shaped raft frame frame holder is
It can be done quickly without much effort, and even one person can do the work, significantly improving work efficiency.

Furthermore, the method of the present invention has the advantage that it can be used not only for erecting a raft frame when installing a seaweed cultivation raft, but also for drying out a seaweed net during seaweed cultivation after installation.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view showing an embodiment of the method of the present invention, and FIG. 2 is a perspective view showing an example of an aquaculture raft installed by the method of the present invention. 1... U-shaped raft frame, 11, 11'... Both sides of the raft frame, 2, 2'... Upper rope, 21, 21'... One end of the upper rope, 3, 3'... Lower rope ,4,
4'...Main float, 5,5'...Auxiliary float, 8...
Sea level, 9...Seaweed net.

Claims (1)

[Claims] 1. A large number of U-shaped raft frames 1 are arranged at intervals, and both sides 11, 11' of adjacent raft frames 1 are connected to upper ropes 2,
2' and the lower ropes 3, 3', the main floats 4, 4' are attached near the lower rope binding part, and the series of raft frames 1 are floated on the sea surface in the same direction in a prone state. By attaching auxiliary floats 5, 5' near the rope binding part, the position of the upper rope binding part is maintained at a higher position than the position of the lower rope binding part, and one end part 21, 21' of the upper rope is held at a higher position than the lower rope binding part. A method for erecting a raft frame for seaweed cultivation, characterized in that a series of raft frames 1 are erected all at once by pulling the raft frames 1 in a direction opposite to the direction in which they are laid down.