JP2003191888A - Composite floating body system and connecting method between floating body elements - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a composite floating body system having large-size and large mass and to establish a technique for connecting element floating bodies to realize the system. <P>SOLUTION: A first element floating body 1-1 is linked with a second element floating body 1-2. A connecting mechanism is provided for connecting the first element floating body 1-1 to the second element floating body 1-2. The connecting mechanism is constituted of a multi-dimensional rotating joint 4 of the first element floating body 1-1 and the second element floating body 1-2 and restoring mechanisms 5-1 and 5-2 for generating restoring force for restoring a relative rotation position of the first element floating body 1-1 and the second element floating body 1-2 to a reference position. The multi-dimensional rotating joint 4 is desirable to be dottedly connected, in particular. The two element floating bodies 1-1 and 1-2 do not impulsively approach and do not impulsively separate. When external force such as wave power is applied to the two element floating bodies, rectilinear directional force to be applied to the two element floating bodies 1-1 and 1-2 is converted into rotational force between the two element floating bodies 1-1 and 1-2 by the multi-dimensional rotating joint 4, large moment is generated in the floating bodies having large mass, and application of the huge rectilinear directional force between the two element floating bodies 1-1 and 1-2 is effectively suppressed. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite floating body system and a method for connecting floating body elements, and more particularly, to a composite floating body system in which floating body elements are connected vertically and horizontally to assemble a floating structure in a construction area, and a floating body. Regarding connection method between elements.

[0002]

2. Description of the Related Art It is recognized that ocean space is important for future national integrated development, and floating structures are expected as structures that play an important role in future national integrated development. Such structures are diverse, such as distribution centers built in coastal areas, leisure centers built in coastal areas, offshore wind power generation facilities, and bridges passed to the straits, and are generally large in size. It becomes complicated and complicated.

It is rational that the floating structure, which is large and complicated as a whole, is not a single structure but a complex chain system in which small-scale floating bodies are complexly linked.

The composite floating system in which the element floating bodies are connected in a chain is not only able to deal with the sequential expansion of the scale and the complicated structuring relatively easily, but also the social needs during the long-term operation period. It can respond immediately to changes in size, structure, and function. The composite floating body system in which only the element floating body of the damaged portion can be replaced when the damage occurs is also advantageous in terms of durability and maintenance. By appropriately setting the arrangement of the connecting portions and the connecting characteristics, it becomes possible to optimize the overall dynamic characteristics and reduce the wave response. Multiple element floats are built simultaneously in multiple shipyards, and the construction period can be significantly reduced compared to the construction period for a single structure.

The basic technique for realizing such a chain structure of elemental floating bodies, which has many advantages, is a connection technology between elemental floating bodies. As a connecting method between the element floating bodies, three types of connecting techniques are known as shown in FIGS. The connection technology shown in FIG. 22 is a fixed technology in which adjacent element floating bodies are rigidly connected with bolts. In fixed technology, welded connections are preferably used instead of bolted connections. The fixed technique in which the moment between element floats is restrained and a large load is generated at the connecting portion is applied only to the connection of the floats which are extremely small and extremely lightweight. The connection technique shown in FIG. 23 is a flat-fixation type technique in which adjacent element floating bodies are swingably coupled by a hinge-type coupler. The flat-fixation type technology, in which the rotational movements of the roll and yaw between the element floating bodies are restrained and a large load is generated at the joint portion, is applied only to the small and lightweight floating body connection. The connection technique shown in FIG. 24 is a free-type chain technique in which adjacent element floating bodies are swingably connected by a chain. There is no restraining force between the element floating bodies in the approaching direction, and there is a high possibility that a large impact load will occur at the joint where the reaction force characteristics have a strong asymmetry. It is applied in a limited way.

There is a demand for realization of a large-scale, large-mass composite floating body system. In order to realize this, it is necessary to establish a new technology for connecting element floating bodies.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a composite floating body system capable of realizing a large size and large mass composite floating body system, and a method of connecting floating body elements. Another object of the present invention is to provide a composite floating body system and a method for connecting floating body elements, in which a technique for connecting the element floating bodies can be established for the realization thereof.

[0008]

Means for solving the problem Means for solving the problem are expressed as follows. The technical matters appearing in the expression are accompanied by parentheses (), and numbers, symbols and the like are added. The numbers, symbols and the like are technical matters constituting at least one embodiment or plural examples of the embodiments or plural examples of the present invention, particularly the embodiment or examples. It corresponds to the reference numbers, reference symbols, etc. attached to the technical matters expressed in the drawings corresponding to. Such reference numbers and reference symbols clarify correspondences and bridges between the technical matters described in the claims and the technical matters of the embodiments or examples. Such correspondence / bridge does not mean that the technical matters described in the claims are limited to the technical matters of the embodiment or the examples.

The composite floating body system according to the present invention comprises a first element floating body (1-1), a second element floating body (1-2) linked to the first element floating body (1-1), and a first element floating body ( 1-1)
Is connected to the second element floating body (1-2). The connecting mechanism is the first element floating body (1-
1) and a multidimensional rotary joint (4) of the second element floating body (1-2), the first element floating body (1-1) and the second element floating body (1).
-2) and a restoring mechanism (5-1, 5-2) for generating a restoring force for returning the relative rotational position to the reference position.

It is particularly preferred that the multidimensional rotary joint (4) is a point connection. The two-element floating body does not approach impulsively and never separates impulsively. When an external force such as a wave force acts on the two-element floating body, the linear force acting on the two-element floating body is converted into a rotational force between the two-element floating bodies by the multi-dimensional rotary joint (4), and a large mass is generated. A large moment is generated in the floating body and the huge linear force is effectively suppressed from acting between the two-element floating bodies.

The restoring force is given as a spring force,
It is preferable because the change in force becomes gentle. It is important that the spring constant of the spring force is a function of the relative displacement amount of the relative rotational position between the two element floating bodies and is not constant. The spring constant is
It is preferable that it is larger in a region where the relative displacement is larger and smaller in a region where the relative displacement is smaller. The spring is a tension spring or a compression spring, and the spring is not limited to the coil spring.

When the restoring force (or restoring force) is a tensile force, the tensile force is a connecting cord (23) stretched between the first element floating body (1-1) and the second element floating body (1-2). The tension of the weight (2) that is hung on the connecting rope (23).
4) Based on gravity. The tension in this case can increase indefinitely. Multiple dimensions are two-dimensional or three-dimensional.

The method of connecting floating elements according to the present invention is 2
The floating body elements are rotatably connected in a multi-dimensional manner, and a restoring force for restoring the multi-dimensional rotational position between the two floating body elements to the reference rotational position is applied as an internal force between the two floating body elements.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Corresponding to the drawings, an embodiment of a composite floating body system according to the present invention is provided in a coastal area close to land. As shown in FIG. 1, the composite floating body system 10 is constructed as a floating body on the sea surface such as a sea leisure center, and is convenient for a combination connection (eg, straight connection, annular connection) such as a regular hexagonal column surface. Is a set of a large number of elemental floating bodies 1 and is connected to a land 3 via a bridge-type road 2. One cylindrical surface of the regular hexagonal cylindrical surface of one element floating body 1 faces substantially parallel to one cylindrical surface of the regular hexagonal cylindrical surface of another element floating body 1. The regular hexagonal prismatic surface is a vertical surface on average in time. The shape of the element floating body 1 is freely designed according to the application.

A large number of element floating bodies 1 can be two-dimensionally developed and sequentially connected to be added or removed. Six element floating bodies 1 may be connected to one element floating body 1 from six directions to form a flat surface without holes, but the element may be formed in a regular hexagonal central region surrounded by the six element floating bodies 1 that are annularly connected. By not allowing the floating body 1 to exist, it is possible to form a perforated plane and foster an aesthetic landscape. If there is no external force such as wave force, tidal force, or wind force, the aggregate of the upper surfaces of the many elemental floating bodies 1 forms one plane (one sheet). The aggregate of the upper surfaces forms a complicated uneven and wavy curved surface. A complicated external force may generate a local load at a connecting portion between adjacent two element floating bodies. In order to suppress the occurrence of such local loads, a new concept of connection technology is needed.

FIG. 2 illustrates such a required coupling technique. FIG. 2 shows a connecting portion of two adjacent element floating bodies 1 among a large number of element floating bodies 1. A first element floating body 1-1 and a second element floating body 1-2 are shown as two adjacent element floating bodies 1. The connecting mechanism is composed of one point-like connecting mechanism 4 and a symmetrical tensioning mechanism 5. The symmetrical tensioning mechanism 5 is composed of a first tensioning mechanism 5-1 and a second tensioning mechanism 5-2. Here, the symmetric tension means that the forces in the directions in which two adjacent element floating bodies approach and separate from each other are symmetrical with respect to the equilibrium equilibrium point, but they do not mean that they are completely symmetrical.

The dot-like connecting mechanism 4 includes a first chain body 6-1 connected to the first element floating body 1-1, a second chain body 6-2 connected to the second element floating body 1-2, and a first chain body 6-2. It is composed of a multi-dimensional rotary chain joint 7 that links the moving side portion of the chain 6-1 and the moving side portion of the second chain 6-2. A ball joint is preferably exemplified as the multi-dimensional rotary chain joint 7. The multi-dimensional rotary chain joint 7 which is such a ball joint is formed by a sphere, which is the first
It is fixed to the chain 6-1 and held by the second chain 6-2. The multi-dimensional rotary chain joint 7 using a ball joint is a triaxial rotary joint.

One horizontal line passing through the center of the sphere and common to the first element floating body 1-1 and the second element floating body 1-2 at the relative reference position is indicated by the X axis. The center point of the sphere is indicated by the mechanical origin O. A horizontal line passing through the mechanical origin O and orthogonal to the X axis is indicated by the Y axis. Mechanical origin O
A vertical line passing through is defined as the Z axis. The center line of the first element floating body 1-1 and the center line of the second element floating body 1-2 coincide with the X axis, and the center line between the first element floating body 1-1 and the second element floating body 1-2 is Y. The relative positions of the first element floating body 1-1 and the second element floating body 1-2 when they coincide with the axis are hereinafter referred to as relative reference positions.

FIG. 2 shows the first element floating body 1 at the relative reference position.
-1 and the second element floating body 1-2 are shown. Although the first element floating body 1-1 and the second element floating body 1-2 are allowed to rotate three-dimensionally around the mechanical origin O, the first element floating body 1-
1 and the second element floating body 1-2 do not have relative movement in the X-axis direction unless there is relative movement in the Y-axis direction and relative movement in the Z-axis direction. As for the movement of the first element floating body 1-1 with respect to the second element floating body 1-2, only three rotational movements, that is, a rotational movement about the X axis, a rotational movement about the Y axis, and a rotational movement about the Z axis are allowed. .

First tensioning mechanism 5-1 in relative reference position
Are arranged geometrically and mechanically symmetrically with respect to the vertical plane including the X axis with respect to the second tension mechanism 5-2. The first tension mechanism 5-1 is exactly the same as the second tension mechanism 5-2. The first tension mechanism 5-1 includes a fluid pressure type tension cylinder 8, a compression spring mechanism 9, and a bendable connecting rod 11. Flexible connecting rod 11
Can be replaced with chains, wires. The fluid pressure type tension cylinder 8 is arranged on the side of the first element floating body 1-1. The compression spring mechanism 9 is arranged on the side of the second element floating body 1-2.

The hydraulic tension cylinder 8 is supported by bearings 12 and can rotate about a horizontal line parallel to the Y axis, as shown in FIG. The bendable portions 13 and 14 of the bendable connecting rod 11 are provided at two locations. Each of the two bendable portions 13 and 14 forms a three-dimensional universal joint, and a spherical joint or a ball joint is preferably exemplified as such a joint. The fluid pressure type tension cylinder 8 has a hydraulic pressure supply mechanism that normally pulls the bendable connecting rod 11 in the direction from the second element floating body 1-2 to the first element floating body 1-1. The first element floating body 1-1 and the second element floating body 1-2 are subjected to a tensile force that normally pulls each other by the tensile force of the fluid pressure type tension cylinder 8.

The compression spring mechanism 9 includes the rod support guide bearing 1
5 and a stopper 16. The bendable connecting rod 11 has a flange 17 that extends through the rod support guide bearing 15 and is fixedly coupled to the extended end thereof. The stopper 16 is fixed to the rod support guide bearing 15 on the side of the facing surface of the rod support guide bearing 15 which the collar 17 faces. The compression spring mechanism 9 further has a spring constant variable spring (fender) 18. The spring constant variable spring 18 is provided between the rod support guide bearing 15 and the collar 17.

FIG. 4 shows the spring characteristics of the spring constant variable spring 18. The horizontal axis of FIG. 4 represents the compression displacement (fender displacement) of the spring constant variable spring 18, and the vertical axis thereof represents the compression reaction force (fender reaction force) of the spring constant variable spring 18. If the spring constant variable spring 18 is a coil spring, the spring constant is constant, but the spring constant variable spring 18 in which a fender is used has a physical property that the relationship between the compression reaction force and the compression displacement is not linear but nonlinear. have. In the displacement area A and the displacement area B, the relationship between the compression reaction force and the compression displacement is approximately linear, but in the entire area of the displacement area A and the displacement area B, the relationship is non-linear. In the displacement region A where the displacement amount is small, the spring constant is small, and in the displacement region B where the displacement amount is large, the spring constant is large.

FIG. 5 shows a mechanical analysis of the embodiment described above. The variable spring constant spring 18 is shown with a coil spring 18 'which is mechanically equivalent thereto. However, the spring constant of the coil spring 18 'changes as shown in FIG. 4 as the amount of expansion increases. For each displacement region, the spring constant is analyzed as being constant. When the sea condition is rough due to an external force such as a strong wind, the collar 17 is separated from the rod support guide bearing 15 further, and the spring constant of the spring constant variable spring 18 is initially set to be small. .

During a storm, the tensile force between the first element floating body 1-1 and the second element floating body 1-2 becomes small, and the tension between the first element floating body 1-1 and the second element floating body 1-2 becomes small. A large amount of rotation of the relative rotational movement of is allowed. At normal times when the sea level is calm, the brim 17 is brought closer to the rod support guide bearing 15, and the spring constant of the spring constant variable spring 18 is initially set to be large. Normally, the first element floating body 1-1
The tensile force between the second element floating body 1-2 and
The rotation amount of the relative rotary motion between the first element floating body 1-1 and the second element floating body 1-2 is limited to a small amount.

As shown in FIG. 5, the first element floating body 1-
1 and the second element floating body 1-2 are on the horizontal plane, and the mechanical origin O
If the first coil spring 18'-1 rotates relative to the second coil spring 1 ',
8'-2 shrinks. First element floating body 1-1 and second element floating body 1
-2 normally abuts at the mechanical origin O, and the first element floating body 1-1 suddenly and shockly contacts the second element floating body 1.
-2, the second element floating body 1-2 does not abruptly and impactly hit the second element floating body 1-2. By the relative rotation in the a direction, the first element floating body 1-
Although the corner C1-1 of No. 1 and the corner C2-1 of the second element floating body 1-2 are separated, the first coil spring 18 '
The tensile force of -1 is increased.

Due to such a non-linearly increasing tensile force, the corner C1-1 of the first element floating body 1-1 and the corner C2-1 of the second element floating body 1-2 are directions in which they approach each other b. The rotational force in the direction b is more strongly received, and the corner C1-2 of the first element floating body 1-1 and the corner C2-2 of the second element floating body 1-2 receive the rotational force in the b direction which is a direction in which they approach each other. Receive weaker. As a result, the first element floating body 1-1 and the second element floating body 1-2 both receive a rotational moment in the b direction and start to restore to the reference position. During such rotational movement, the relative displacement of the first element floating body 1-1 and the second element floating body 1-2 on the X axis is minute.

First element floating body 1-1 and second element floating body 1-2
The relative motion between the two is only rotational motion on the horizontal plane, and
The motion in which the element floating body 1-1 impactly approaches the second element floating body 1-2 does not exist in any of the X-axis direction, the Y-axis direction, and the Z-axis direction. Therefore, it is possible to prevent a huge load from being locally generated at the mechanical origin O, the root of the first chain 6-1 or the root of the second chain 6-2.

First element floating body 1-which receives a rotational force to rotate
1 and the second element floating body 1-2, the tension force of the first coil spring 18'-1 and the second coil spring 18'-2 changes smoothly in the direction to prevent the rotation thereof, and the spring force Are completely eliminated and the first element floating body 1-1 and the second element floating body 1-2 are suddenly approaching each other or are suddenly separated from each other, so that the first element floating body 1-1 and the second element floating body 1-2 are separated from each other. Will not collide with each other or will not separate from each other.

There is no asymmetry of the spring characteristics such as a shocking collision or a shocking separation.
The symmetry of the spring characteristics that the element floating body 1-1 and the second element floating body 1-2 normally receive the spring force smoothly is maintained almost exactly, and the non-linear phenomenon hardly occurs. Since the first element floating body 1-1 and the second element floating body 1-2 are free of moment, the connecting load acting on the mechanical origin O is effectively suppressed to be low.

FIG. 6 shows the relative rotational movement on the vertical plane. A heave motion due to buoyancy is generated at the opposing portion of the first element floating body 1-1 and the second element floating body 1-2 according to the rising and falling movement of the water surface due to the waves. The first element floating body 1-1 and the second element floating body 1-2 are connected by a mechanical origin O, and X
The relative displacement in the axial direction is suppressed to be extremely small. Even in the case of relative rotational movement on the vertical plane, the symmetry of the spring characteristics of the first coil springs 18'-1, 2'is maintained. As described above, the connection load is suppressed low.

The motion mode between the two element floating bodies is Surg.
e, Way, Heave, Toll, Pitch, Y
There are six aw. The symmetry of the spring properties is maintained almost exactly in all six relative modes of motion between the two-element float.

FIG. 7 shows the relationship between the spring constant and the connecting force between the elemental floating bodies, and the relationship between the spring constant and the displacement between the elemental floating bodies. If the spring constant increases, the inter-element floating body connecting force increases with the same displacement, and if the spring constant increases, the inter-element floating body displacement decreases with the same connecting force. Since the setting of the spring constant can be freely changed, the constraint condition can be appropriately changed in accordance with the user's demand on the use surface and the change of the sea condition. The floating body system is not limited to a leisure center, and an emergency medical center, a food supplement center, a distribution center, and a bridge are preferably exemplified.

FIG. 8 shows another embodiment of the composite floating body system according to the present invention. The dot-like connecting mechanism 4 is exactly the same as the above-mentioned dot-like connecting mechanism 4. First tension mechanism 5-
1 is exactly the same as the second tensioning mechanism 5-2, and the point that they are arranged in mirror symmetry is the same as that of the first tensioning mechanism 5-1 and the second tensioning mechanism 5-2.
It is the same as the tension mechanism 5-2. The first tension mechanism 5-1 is
First winch 21-1 and first guide roller 22-1
, The second guide roller 22-2, and the second winch 21-
2, a connecting cord 23, and a weight 24.

The first winch 21-1 and the first guide roller 22-1 are arranged on the first element floating body 1-1 side, and
The guide roller 22-2 and the second winch 21-2 are the second
It is arranged on the side of the element floating body 1-2. One end of the connecting cord 23 is fixed to the winding drum of the first winch 21-1,
The other end of 3 is fixed to the winding drum of the second winch 21-2. The connecting rope 23 is rotatably supported by the first guide roller 22-1 and the second guide roller 22-2, and as shown in FIG. 9, the first guide roller 22-1 and the second guide roller 22-2.
The weight 24 is suspended between the guide roller 22-2.

A tension having a magnitude corresponding to the mass and specific gravity of the weight 24 is generated in the connecting rope 23. Tension T on both sides
Is a tensile force between the first element floating body 1-1 and the second element floating body 1-2. If the gravity acting on the weight 24 is represented by W and the angle between the weight 24 and the vertical line is represented as shown in FIG. 9, the following relationship is established. 2T = W / cos θ

The first winch 21-1 and the second guide roller 22-2 are rotationally fixed. First facing
When the guide roller 22-1 and the second guide roller 22-2 are separated from each other, the angle θ decreases and the tension T increases.
If θ becomes extremely large (close to 90 °), the tension T
Will be extremely large. Therefore, when the first element floating body 1-1 and the second element floating body 1-2 receive an external force that rotates in the a direction, a
If it is rotated in a large direction, the restoring force for rotating it in the b direction is rapidly increased. The initial setting of the tension can be arbitrarily changed by winding and unwinding the connecting rope 23 by the winch 21.

FIG. 10 shows another embodiment of the point connection mechanism 4. The present embodiment is configured as a two-dimensional rotary chain joint 7 '. Two-dimensional rotary chain joint 7 '
Allows rotation about the Y axis and rotation about the Z axis.
The first chain 6-1 fixed to the first element floating body 1-1 is
The first fixed side end portion 31-1, the first central portion 32-1, and the first connection side end portion 33-1 are configured. The second chain body 6-2 fixed to the second element floating body 1-2 includes a second fixed side end portion 31-2, a second central portion 32-2, and a second connection side end portion 33-2. It consists of

The first fixed end 31-1 has a first facing tapered surface 34-1 facing in the Y-axis direction. The first central portion 32-1 has first opposing vertical planes 35-1 formed on both sides thereof. The 1st connection side edge part 33-1 is formed as a forked part. The second fixed side end portion 31-2 has a second facing tapered surface 34-2 facing in the Y-axis direction. The second central portion 32-2 has second opposing vertical planes 35-2 formed on both sides. The second connection-side end portion 33-2 is formed as an insertion portion that fits into the bifurcated portion.

The Y-axis direction pin 36 is inserted into the first connection side end portion 33-1. The second connection side end 33-2 is
It is connected to the Y-axis direction pin 36. Y-axis direction pin 36
The Z-axis direction pin 37 is connected to the. The second connection end 33-2 is inserted into the Z-axis direction pin 37 and can rotate about the Z-axis direction pin 37 as a rotation axis. The Z-axis direction pin 37 can rotate with respect to the first connection side end portion 33-1 together with the Y-axis direction pin 36.

On the first element floating body 1-1, a first fitting opposing tapered surface 38-1 corresponding to the first opposing tapered surface 34-1 is formed as a concave surface. A first fitting opposing vertical surface 39-1 corresponding to the first opposing vertical surface 35-1 is formed on the first element floating body 1-1. On the second element floating body 1-2, a second fitting opposing tapered surface 38-2 corresponding to the second opposing tapered surface 34-2 is formed as a concave surface. A second fitting opposing vertical surface 39-2 corresponding to the second opposing vertical surface 35-2 is formed on the second element floating body 1-2.

The first opposed tapered surface 34-1 is close to or in close contact with the first fitted opposed tapered surface 38-1, and the first opposed vertical surface 35-1 is adjacent to the first fitted opposed vertical surface 39-1. The second opposing vertical surface 35-2 is close to or closely adheres to the second fitting opposing vertical surface 39-2, and the second opposing tapered surface 3
The first chain 6-1 includes the first element floating body 1- so that 4-2 is close to or in close contact with the second fitting opposing tapered surface 38-2.
1 is fitted into the first recessed portion, and the second chain 6-2 is fitted into the second recessed portion of the second element floating body 1-2. A first bottom surface 41-1 is formed in the first recess. A second bottom surface 41-2 is formed in the second recess.

The first fitting opposed tapered surface 38-1, the second fitting opposed tapered surface 38-2, the first bottom surface 41-1 and the second bottom surface 41-2 have their first and second recesses. A large number of jack bolts 42 are arranged so as to stick out.
The projecting amounts of a large number of jack bolts 42 are adjusted, and the first element floating body 1-1 and the second element floating body 1-2 of the point-like connecting mechanism 4 are adjusted.
The positional relationship with respect to is adjusted. A fixing jig is fitted from above the first concave portion and the second concave portion, and the point-like connecting mechanism 4 is firmly fixed to the first element floating body 1-1 and the second element floating body 1-2.

The dot-like connecting mechanism 4 connects the first element floating body 1-1 and the second element floating body 1-2 in a dot-like manner, and the first element floating body 1
-1 and the second element floating body 1-2 are substantially restrained in the X-axis direction, but rotation about the Y axis and Z between the first element floating body 1-1 and the second element floating body 1-2. Allows rotation around the axis. The first fixed-side end portion 31-1 is allowed to rotate about the X axis with respect to the first element floating body 1-1, and the second element floating body 1-2
If the second fixed side end portion 31-2 is allowed to rotate about the X axis with respect to, the two-dimensional rotary chain joint 4 can be modified into a three-dimensional rotary chain joint.

FIG. 11 shows still another embodiment of the composite floating system according to the present invention, and particularly shows an improvement of the embodiment of FIG. 2 of the embodiment. There is no change in the embodiment of FIG. 2 in that the first tensioning mechanism 5-1 and the second tensioning mechanism 5-2 are used. The fluid pressure type tension cylinder 8 is omitted, and the fixing member 51 is arranged on the first element floating body 1-1 side. The rod support guide bearing 15 is arranged on the side of the second element floating body 1-2. The dot-shaped connecting mechanism 4 is configured unchanged. A brim 17 is coupled to an end portion of the bendable connecting rod 11 on which the bendable portion 13 and the bendable portion 14 are provided on the second element floating body 1-2 side. As shown in FIG. 12, the constituent members of the present embodiment are arranged at a position higher than the sea surface and lower than the upper surfaces of the element floating bodies 1-1 and 2.

Between the rod support guide bearing 15 and the collar 17,
Instead of the spring constant variable spring 18, a coil spring 52, a strong spring constant fender, or a combination thereof is provided. In the present embodiment, weak spring characteristics and strong spring characteristics can be freely expressed. First
When the element floating body 1-1 and the second element floating body 1-2 are relatively at the reference position, the effective length of the coil spring 52 is set to a natural length, and in order to exert a strong spring characteristic,
It is not necessary to apply the initial tensile force, and the connecting force can be suppressed weaker.

FIG. 13 shows a more specific structure for exhibiting a strong spring characteristic of the embodiment shown in FIG. A stopper ring 53 is provided between the rod support guide bearing 15 and the collar 17. Stopper ring 5
One end face of 3 abuts on the brim 17. A ring-shaped fender 54 is provided between the rod support guide bearing 15 and the stopper ring 53. The other end surface of the stopper ring 53 abuts on the rod support guide bearing 15.

The combination of the fender 53 having a strong spring characteristic and the coil spring 52 exhibits a strong spring characteristic in the initial state where the first element floating body 1-1 and the second element floating body 1-2 start to separate from each other. Detachable stopper ring 5
By changing the length of 3, the strength of the spring characteristic in the initial state can be made variable.

In the embodiment shown in FIG. 14, a retractable stopper ring 53 is used instead of the detachable stopper ring 53 of the embodiment shown in FIG. A screw 55 is passed through the stopper ring 53. A handle 56 is integrally connected to the proximal end of the screw 55. A fender 54 is provided between the working end surface of the screw 55 and the rod support guide bearing 15. The present embodiment is the same as the embodiment of FIG. 13 in that a strong spring characteristic can be expressed, but the strength can be changed.

FIG. 15 shows that the spring characteristic of the embodiment of FIG. 13 is stronger than the spring characteristic of the embodiment of FIG.

FIG. 16 shows still another embodiment of the composite floating body system according to the present invention. 1st element floating body 1-
The first winding cylinder 57 is arranged on the side of No. 1 symmetrically with the reference plane. The second winding cylinder 58 is arranged on the second element floating body 1-2 side symmetrically with respect to the reference plane. As shown in FIG. 17A, one end of a pulling rope 59 such as a chain wound around the second winding cylinder 58 is fixed to the lower end portion of the first element floating body 1-1. The pulling rope 59 is guided by a guide roller 60 arranged at an upper end portion on the second element floating body 1-2 side. As shown in FIG. 17 (b), one end of the tension rope 61 wound around the first winding cylinder 57 is fixed to the lower end portion of the second element floating body 1-2. Tension line 6
1 is guided by the guide roller 62 arranged at the upper end portion on the first element floating body 1-1 side.

The pull cords 59 and 61 are shown in FIG.
As shown in (a) and (b), they intersect each other in a vertical plane projection. By arranging the pull cords 59 and 61 in a trapezoidal manner in this manner,
The restoring force of the vertical relative movement of the element floating body 1-1 and the second element floating body 1-2 is effectively generated. FIG. 18 shows the spring characteristic of the chain reaction force due to such crossing, and the spring characteristic is strong during tension and weak during relaxation.

FIG. 19 shows still another embodiment of the composite floating body system according to the present invention. The point that the tensioning mechanism (example: the first tensioning mechanism 5-1 and the second tensioning mechanism 5-2 in FIG. 2) is provided symmetrically with respect to the reference plane is the same as in all the embodiments described above. In this embodiment, the point connection mechanism 4 of the embodiment shown in FIG. 2 is improved. One first chain 6-1 of the first chain 6-1 and the second chain 6-2, which are connected to each other via the multi-dimensional rotary chain joint 7, has a reference on both sides of the inner end thereof. A plurality of wheels 63 are arranged in a plane-symmetric manner so that they can roll.

The wheel 63 rolls on the concave surface 64 formed on the side of the connection side end surface of the first element floating body 1-1. Sliding instead of rolling is possible. Wheel 63 is shown in FIG.
As shown in FIG. 9 and FIG. 20, it is possible to roll vertically by being guided on a vertical line defined with respect to the reference plane. The first element floating body 1-1 and the second element floating body 1-2 generally exhibit a large vertical coupling force. Since the first chain 6-1 is movable in the vertical direction with respect to the first element floating body 1-1, the connecting force in the vertical direction can be weakened weakly.

FIG. 21 shows still another embodiment of the composite floating body system according to the present invention. In the present embodiment, a three-dimensional rotary chain joint 7 ″ is used instead of the two-dimensional rotary chain joint 7 ′ in the embodiment of FIG.
A spherical body 71 is fixed to the Y-axis direction pin 36. The second connection side end portion 33-2 is partially divided into halves, and a spherical surface is formed inside the divided portion. The spherical body 71 can be slidably and smoothly rotated in contact with the spherical surface. The rotation is triaxial rotation.

[0056]

The composite floating system according to the present invention, and
The connecting method between the floating body elements allows rotation between two adjacent two element floating bodies, but minimizes displacement in the front facing direction so that the acting force in that direction is made symmetrical and the front direction force is converted into a rotational force. , The converting force becomes a restoring force due to the spring-like reaction force and smoothly restores between the two adjacent element floating bodies to the reference position, so that a local stress is instantaneously generated in the element floating body or the connecting portion between the element floating bodies. There is nothing to do.

[Brief description of drawings]

FIG. 1 is a perspective view showing an application target of a composite floating system according to the present invention.

FIG. 2 is a plan view showing an embodiment of a composite floating body system according to the present invention.

FIG. 3 is a front view of FIG. 1.

FIG. 4 is a graph showing spring characteristics.

FIG. 5 is a plan view showing a dynamic analysis.

FIG. 6 is a front view of FIG.

FIG. 7 is a graph showing a relationship between a spring constant and a connecting force.

FIG. 8 is a plan view showing another embodiment of the composite floating system according to the present invention.

FIG. 9 is a front view of FIG.

FIG. 10 is a perspective view showing another connecting portion.

FIG. 11 is a plan view showing still another embodiment of the composite floating body system according to the present invention.

FIG. 12 is a front sectional view of FIG. 11.

FIG. 13 is a plan view showing still another embodiment of the composite floating body system according to the present invention.

FIG. 14 is a plan view showing still another embodiment of the composite floating body system according to the present invention.

FIG. 15 is a graph showing another spring characteristic.

FIG. 16 is a plan view showing still another embodiment of the composite floating body system according to the present invention.

17 (a) and 17 (b) are front cross-sectional views at two positions in FIG.

FIG. 18 is a graph showing still another spring characteristic.

FIG. 19 is a plan view showing still another embodiment of the composite floating body system according to the present invention.

20 is a front sectional view of FIG.

FIG. 21 is a plan view showing still another embodiment of the composite floating body system according to the present invention.

FIG. 22 is a front view showing a known coupling device.

FIG. 23 is a front view showing another known coupling device.

FIG. 24 is a front view showing yet another known coupling device.

[Explanation of symbols]

1-1 ... First element floating body 1-2 ... Second element floating body 5-1 and 5-2 ... Restoration mechanism 4 ... Multi-dimensional rotary joint 23 ... Connection cable 24 ... Weight

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masaki Matsuura             3-5-1, 717-1, Fukahori-cho, Nagasaki-shi, Nagasaki             Hishi Heavy Industries Ltd. Nagasaki Research Center (72) Inventor Kunihiro Ikegami             3-5-1, 717-1, Fukahori-cho, Nagasaki-shi, Nagasaki             Hishi Heavy Industries Ltd. Nagasaki Research Center (72) Inventor Kazuki Tokimitsu             Toshimitsu Co., Ltd. 7-3 Motofunamachi, Nagasaki City, Nagasaki Prefecture             Inside the design office (72) Inventor Yoshihisa Yamauchi             Nagasaki Prefecture Omura City Ikeda 2-chome 1303-8 Nagasaki Prefecture             Industrial Technology Center

Claims (9)

[Claims] 1. A first element floating body, a second element floating body linked to the first element floating body, and a connecting mechanism connecting the first element floating body to the second element floating body, wherein the connecting mechanism comprises: A multi-dimensional rotary joint of the first element floating body and the second element floating body, and a restoring mechanism that generates a restoring force for returning the relative rotational position of the first element floating body and the second element floating body to a reference position. Composite floating system. 2. The composite floating system according to claim 1, wherein the restoring force is a spring force, and a spring constant of the spring force is a function of a relative displacement amount of the relative rotational position and is not constant. 3. The composite floating system according to claim 2, wherein the spring constant is larger in a region where the relative displacement amount is larger and smaller in a region where the relative displacement amount is smaller. 4. The composite floating system of claim 3, wherein the spring constant is variable in the larger region and the smaller region. 5. The composite floating system according to claim 1, wherein the restoring force is a tensile force. 6. The tensile force is applied to the first element floating body and the second element floating body.
The composite floating system according to claim 5, wherein the tension is a tension of a connecting line stretched between the element floating bodies, and the tension is based on gravity of a weight suspended on the connecting line. 7. The multiple dimensions are two-dimensional.
The composite floating system of claim 1 selected from 8. The plurality of dimensions are three dimensions.
The composite floating system of claim 1 selected from 9. A two-floating body element is rotatably connected in a multidimensional manner, and a restoring force for restoring a multi-dimensional rotational position between the two floating body elements to a reference rotational position is applied as an internal force between the two floating body elements. A method of connecting floating elements including a.