JPS61176711A - Mooring device for float - Google Patents

Abstract

PURPOSE:To save the cost of operations by attaching a rope for operation to a float and also a wing to generate propulsion forces to the periphery of the float in a vertically rocking manner against waves. CONSTITUTION:A chain 7 is attached to a floating breakwater 5, and an anchor 6 is attached to the tip of the chain 7. One end of connecting bars 10 and 11 is connected through hinges 12 to the side of the breakwater 5 in such a way as to allow the wing 8 to face waves 9, and the other end is connected through a hinge 13 with a rotary spring to the side of the wing 8. When waves 9 come against the breakwater 5, the wing 8 is moved in a vertically rocking manner, and a propulsion force toward the opposite direction to the coming direction of waves 9 is generated. The propulsion force is transmitted to the bars 10 and 11 and the breakwater 5 is pulled to offset the forces of the waves 9.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a mooring device for a floating body.

BACKGROUND OF THE INVENTION Most conventional floating breakwaters are moored with chains as shown in FIG. 3 in order to maintain their fixed position against the pushing force of waves. In the figure, (1) is a floating wave bank, (
2) is an anchor sunk to the seabed, and (3) is a floating wave bank (
The chain % (4) connecting 1) and anchor (2) is the floating wave bank (
1) is the wave that attacks. And in this case, the floating wave bank (
In order to prevent the chain (3) from breaking due to the movement caused by the wave (4) of 1), the chain (3) is generally large in diameter and is stretched fairly long (loosely stretched).

Problems to be Solved by the Invention However, according to such a conventional configuration, the chain (3)
There was a problem in that the cost of this accounted for a high proportion of the cost of installing the floating breakwater (1). In addition, since the long chain (3) is used, the occupied area is extremely large, and the motion characteristics of the floating wave bank (1) are likely to change, making it difficult to design optimal wave dissipation.

An object of the present invention is to provide a mooring device for a floating body that solves the above problems.

Means for Solving the Problems In order to solve the above-mentioned problems, the mooring device for a floating body of the present invention includes a mooring device for mooring a floating body floating on water to the bottom of the water, and a rope at appropriate places around the floating body up and down facing the waves. The structure includes wings that are swingable and generate propulsive force in a direction opposite to the direction of the waves due to the motion of the waves.

In other words, the blades are used to pull the floating wavebank in the direction opposite to the direction in which the waves come, and by appropriately selecting the mass of the blades, the force of the waves pushing the floating wavebank can be reduced. This makes it possible to offset most of the

Example An embodiment of the present invention will be described below based on the drawings.

In Figure 1, (5) is a floating wave levee installed on the sea, (6) is an anchor sunk on the seabed, and (7) is a floating wave dyke (5) and an anchor (6). The chain (7) in this embodiment has a smaller diameter and considerably shorter length than the chain described in the conventional example, and is set to occupy a narrow area. (8) is a propulsive force generating blade provided on the wave (9) incoming side of the floating wave dyke (5) so as to be able to swing up and down facing the wave (9); αQ0 is the blade (8) ) and both sides of the floating wave bank (5) are connected by a pair of left and right connecting rods 7.

One end of each is connected to the floating wave bank (5) via a hinge, and the other end is connected to the wing (8) via a hinge with a rotating spring. Therefore, the wing (8) in the water has a connecting weight of 0 due to the attack of the wave (9).
It is rotatable in the vertical direction via the connecting rod α0
It can also swing up and down with respect to the surface. In addition, the hinge (to)
The rotary spring attached to the blade (8) is used to always maintain the wing (8) in a predetermined position (for example, horizontal position). α4 is an anchor sunk in the seabed directly below the wing (8), (to) is a rope connecting the anchor α4 and the hinge with rotation spring (to), and α is interposed in the middle of the rope (to). These springs function to always hold the connecting rod ao (6) in a predetermined position (eg, horizontal position). Therefore, the vertical rotation of the connecting rod αI (b) is restricted within a certain range, and the connecting rod α13 (11) is returned to its original position after the rotation.

With this configuration, when a wave (9) approaches the floating wavebank (5), the wing (8) mainly swings up and down, causing the swing (
Vibration) Based on the principle of wing propulsion, a propulsion force is generated in the direction opposite to the direction of attack of the wave (9). Therefore, this propulsive force is transmitted through the connecting rod (to) ■ and pulls the floating wave bank (5), and most of the force of the wave (9) pushing the floating wave bank (5) is due to this. It will be canceled out. Hey,
The way the wing (8) swings can be freely changed by adjusting the mass of the wing (8) and the strength of the spring α and the rotating spring attached to the hinge (to). 5) The pulling force can be changed freely. Therefore, although in the above embodiment, the floating breakwater (5) and the anchor (6) are connected by the chain (7), it is theoretically possible to omit these.

Next, the above principle will be explained based on FIG.

That is, the present invention utilizes the thrust generated when the blade (8) swings (vibrates), and generates waves (9) as shown in the figure.
) has momentum in the vertical and horizontal directions, so the wings (8) are moved in the vertical direction by the energy in the vertical direction, creating a backward flow. In other words, the effect is the same as that of a fan. This is the principle of oscillating wing propulsion.

In addition, according to the above configuration, a connecting rod uO■ is attached to the hinge (2).
If a rotation spring is attached to keep the boat in a predetermined position, the anchor α, rope (end), spring αe, etc. can be omitted, and it can be used at great depths of water. Further, although the explanation has been given using the floating breakwater (5) as an example, it is clear that the same configuration can be applied to general marine structures.

Effects of the Invention According to the present invention, the diameter of the chain used for mooring a floating body can be made small, and the length can also be made considerably short.

Therefore, it is possible to reduce costs and exclusive area. Furthermore, since the motion characteristics of the floating body do not change much, it is possible to design optimal wave dissipation and the like relatively easily.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view showing one embodiment of the present invention, FIG. 2 is a diagram explaining the principle, and FIG. 3 is a side view showing a conventional example. (5)...Floating wave bank, (7)...Chain, (8)...
Tsubasa, (9)...Wave Agent Yoshihiro Morimoto Figure 2 Figure 5 Procedures Amendment (Sai) April 3, 1938

Claims (1)

[Claims] 1. A cable body mooring a floating body floating on the water to the bottom of the water, and a cable body provided around the floating body at appropriate positions so as to be able to swing up and down facing the waves, and a propulsion force generated by the movement of the waves in a direction opposite to the direction of attack of the waves. A mooring device for a floating body, characterized in that it has wings that generate.