JP3159881B2 - Water wave energy converter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water surface wave energy conversion device for converting sea surface water energy into rotational energy.

[0002]

2. Description of the Related Art Hitherto, various power generation devices have been proposed which generate electric power using water surface wave energy. In such a power generator, it is necessary to convert water wave energy into rotational energy in order to drive the generator.

[0003]

A converter for converting water wave energy into rotational energy is disclosed in Japanese Patent Application Laid-Open No. 61-1 / 1986.
As disclosed in JP-A-90171, JP-A-61-250213 and JP-A-60-13987, an air turbine is rotated by an air flow generated by the vertical movement of the water surface. However, such a conversion device requires a chamber and an air turbine for generating an air flow from the vertical movement of the water surface, and has a problem that the device becomes large-scale.

Further, Japanese Patent Application Laid-Open No. 61-226572 discloses a converter that converts vertical fluctuations caused by fluctuations in the water level of a buoy floating on the sea surface into rotational motion using a rack and a pinion. However, the rotational motion obtained by this converter has a problem that the rotational direction is alternately changed in accordance with the vertical fluctuation due to the wave height fluctuation of the buoy, which is inconvenient for use in power generation and the like. .

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a water wave energy conversion device capable of converting a vertical fluctuation of a water surface into a rotation motion in which a rotation direction does not change with a simple configuration. To provide.

[0006]

[Means for Solving the Problems]

[0007]

[0008]

[0009]

[0010] water waves energy converter according to claim 1, a sliding wheel that will be placed above the water surface, and b-loop wound around the smooth wheel, substantially vertical and attached to one end of the b-loop a flow <br/> preparative you floating on the water surface together with the suspended direction, lighter weight than float by being suspended in a substantially vertical direction is attached to the other end of the b-loop, during level rise, with an increase of the buoyancy acting on the float, the slipping wheel acts to rotate in one rotational direction,
When the water level descends in accordance with the decrease of the buoyancy acting on the float, it acts to rotate the sliding wheel in the other direction of rotation
Outputs the counter weight, a one-way rotational energy
Has a first output shaft for being disposed above the water surface, the water surface of the rotational motion of one rotational direction of the reciprocating rotational motion of the companion intends slipping wheel up and down motion of the float arising by vertical movement And a first rotational movement extracting means for outputting through a first output shaft, and rotational energy in the other direction.
And having a second output shaft for outputting, the water surface is located above, the full <br/> funnel arising by water of vertical movement up and down movement of the reciprocating rotary motion of the companion intends slipping wheel Take out the rotational movement in the other rotational direction and set the second output shaft
Uni comprising a second rotary motion take-out means for outputting via
The first and second units in each unit are provided.
Are connected to each other .

In this water surface wave energy conversion device, a plurality of floats move up and down as the water surface moves up and down, and a plurality of pulleys move while alternately changing the rotation direction. One of the rotational movements of each of these pulleys is rotated by the first rotational movement extracting means.
The rotational movement in the other rotational direction of the rotational movements of the plurality of pulleys is respectively extracted by the second rotational movement extracting means.

According to a second aspect of the present invention, there is provided a water surface wave energy conversion apparatus according to the first aspect.
In the unit, the first rotational movement take-out means comprises a first ratchet Organization you transmit only the rotation motion of one of the rotation direction of the reciprocating rotational motion of the sliding wheel to the first output shaft,
A second rotational movement retriever, to have a second ratchet Organization only rotational movement in the other rotational direction of the reciprocating rotational motion of the sliding wheel you transfer <br/> to the second output shaft It is composed.

In this water surface wave energy converter, each unit is
Each Tsu DOO, float moves up and down motion with the water surface of the vertical movement, sliding wheel is rotational movement while changing the rotational direction alternately. Rotational movement of one of the rotational direction of the rotational movement of the sheave in each unit, each unit by the first ratchet mechanism is transmitted to the first output shaft, of the respective rotational movement of sliding car The rotational movement in the other rotational direction is transmitted to the second output shaft by the second ratchet mechanism for each unit .

According to a third aspect of the present invention, there is provided a water surface wave energy conversion apparatus according to the second aspect.
In the unit , torque loads on the first ratchet mechanism and the second ratchet mechanism between the first ratchet mechanism and the first output shaft and between the second ratchet mechanism and the second output shaft, respectively. And a shock absorber for accumulating distortion energy. A water wave energy conversion device according to a fourth aspect of the present invention provides a water wave energy conversion device according to any one of the first to third aspects, wherein, in each unit , the float is floated on the water surface. The cross-sectional area is maximum at the position of the draft surface at the time, and the cross-sectional area decreases as the distance from the draft surface increases.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a configuration of a water wave energy converter according to a first embodiment of the present invention, and FIG.
It shows a cross-sectional configuration along the -A line. The water surface wave energy conversion device of the present embodiment includes a pair of support plates 11, 11 which are arranged to face each other, and these support plates 11, 11 are connected to a rotating shaft 13 via bearings 12, 12.
Is rotatably mounted. In FIG. 1, one support plate 11 is omitted. The pulley 1 is provided on the rotating shaft 13.
4, a pulley 15 with a ratchet gear as a first ratchet mechanism, and a pulley 16 with a ratchet gear as a second ratchet mechanism are attached. Pulley 14
, A rope 17 such as a seawater-resistant wire rope is wound once. At one end of this rope 17 is a water surface 18
A float 19 floating above is attached. A counterweight 20 lighter than the float 19 is attached to the other end of the rope 17.

Here, the weight, specific gravity, and volume of the float 19 are W ₁ , S ₁ , and V ₁ , respectively, and the weight, specific gravity, and volume of the counterweight 20 are W ₂ , S ₂ , and V ₂ , respectively. When the volume weight is w, the equilibrium at rest is as follows, assuming that the draft rate is α.

[0018]

[Number 1] _{S 2 · w · V 2 =} (S 1 -α) · w · V 1 ... (1)

When S ₁ is obtained by modifying the above equation, the following equation is obtained.

[0020]

S ₁ = α + S ₂ · V ₂ / V ₁ (2)

Therefore, the specific gravity (that is, the material) of the float 19 is determined by the draft rate α, the specific gravity S _{2 of the} counterweight 20,
Then, the volume V ₂ is set as a condition, the volume ratio V ₂ / V ₁ is determined in consideration of the shape and balance, and the volume ratio V ₂ / V ₁ can be determined by the above equation (2). In order to suppress the horizontal movement of the float 19 due to waves and currents on the sea surface, it is advantageous to increase the tension of the rope 17, and based on this fact, the float 19 and the counterweight are calculated from the above equations (1) and (2). What is necessary is just to determine 20 specifications.

Returning to FIG. 1, the explanation will be continued.
1 and 11 are respectively connected to the first through bearings (not shown).
A torque transmission rod 21 as an output shaft and a torque transmission rod 22 as a second output shaft are rotatably mounted. A pulley 23 is attached to the torque transmission rod 21, and a pulley 24 is attached to the torque transmission rod 22. Pulley 15 with ratchet gear and pulley 2
A belt 25 is stretched between the pulley 16 and the pulley 16 with the ratchet gear, and a belt 26 is
Has been passed over.

The pulley 15 with a ratchet gear is
In this case, only one of the two rotational directions, i.e., the rotational movement in the counterclockwise direction, is transmitted to the torque transmitting rod 21 via the belt 25 and the pulley 23. Similarly, the pulley 16 with the ratchet gear is connected to the pulley 14.
Only the other rotational direction of the two rotational directions, for example, the clockwise rotational movement, is transmitted to the torque transmission rod 22 via the belt 26 and the pulley 24.
The torque transmission rod 21 and the torque transmission rod 22 are connected to a device using the obtained rotational energy, for example, a power generation device (not shown).

FIGS. 3 and 4 show an example of a pulley 15 with a ratchet gear using a one-way clutch. The pulley with ratchet gear 1
Reference numeral 6 denotes a structure which is symmetrical to the one shown in FIGS. Pulley 15 with ratchet gear shown in these figures
Has a plurality of roller storage portions 31 on the inner peripheral side. In each roller storage portion 31, a roller 32 and a spring 34 for urging the roller 32 toward the cam surface 33 are stored. In this pulley 15 with a ratchet gear, as shown in FIG. 3, when the rotating shaft 13 rotates counterclockwise, the spring 3
The roller 32 comes into contact with the cam surface 33 by the action of 4, and the pulley 15 with the ratchet gear rotates by the wedge action of the cam face 33 and the rotating shaft 13. On the other hand, as shown in FIG. 4, when the rotating shaft 13 rotates clockwise, the roller 32 separates from the cam surface 33 and the pulley 1 with the ratchet gear.
5 does not rotate. The pulley 16 with a ratchet gear does not rotate when the rotating shaft 13 rotates counterclockwise, but rotates when the rotating shaft 13 rotates clockwise.

The pulleys with ratchet gears 15, 16
May be provided with a pulley having no ratchet gear, and instead of the pulleys 23 and 24, a pulley with a ratchet gear may be provided.

Next, the operation of this water surface wave energy converter will be described.

In this energy conversion device, when the water surface 18 fluctuates up and down, the float 19 moves up and down, whereby the pulley 14 rotates while alternately changing the rotation direction.
Here, when the water level rises, the buoyancy acting on the float 19 increases, and [weight of the counterweight 20-(weight of the float 19-buoyancy acting on the float 19)] rotates the pulley 14 clockwise in the figure. When the water level is lowered, the buoyancy acting on the float 19 is reduced, so that [(weight of the float 19-float 1
9)-the weight of the counterweight 20) creates a torque that causes the pulley 14 to rotate counterclockwise in the figure.

The rotational movement of the pulley 14 in the counterclockwise direction is transmitted to the torque transmitting rod 21 via the pulley 15 with the ratchet gear, the belt 25 and the pulley 23. On the other hand, the clockwise rotation is transmitted to the torque transmission rod 22 via the pulley 16 with the ratchet gear, the belt 26 and the pulley 24. Accordingly, the torque transmission rod 21 and the torque transmission rod 22 rotate in directions opposite to each other, but their rotation directions are always constant. In this manner, the vertical fluctuation of the water surface 18 is converted into a rotational motion in which the rotational direction does not change.

By the way, it is conceivable that the position of the draft surface when the water level rises and when the water level falls slightly changes from the position of the draft surface when the water is still. This change in the position of the draft surface changes the buoyancy, resulting in a loss of energy conversion. In order to reduce this loss, it is advantageous that the float 19 has a flat shape in which the cross-sectional area is maximum at the position of the draft surface at the time of still water and the cross-sectional area decreases as the distance from the draft surface increases. In the simplest case, when the position of the draft surface at the time of still water is the center height of the float 19, as shown in FIG. 1, the cross-sectional area becomes maximum at the position of the center height of the float 19. It is preferable to have a flat spherical shape.

In this embodiment, by increasing the diameter of the pulley 14, it is possible to provide a margin for the torque at the energy input source. With such a configuration, after inputting the torque from the last-stage component, the rotation speed is increased using the transmission, so that the power generation device (not shown) can generate power efficiently.

FIG. 5 shows an example in which a plurality of the energy conversion devices shown in FIG. 1 are connected. In this example, the energy conversion device shown in FIG. 1 is one unit 40, and a plurality of units 40 are arranged along the axial direction of the torque transmission rods 21 and 22.
22 are connected to each other by a universal joint (not shown). The support plate 11 of each unit 40
Supports each component so that the torque transmission rods 21 and 22 of each unit 40 are arranged on a substantially straight line, and is finally connected and fixed to each other.

The last stage (output side of rotational energy)
At a position between the unit 40 and a device using rotational energy such as a generator, a shock absorber 41 is provided for each of the torque transmission rods 21 and 22. The shock absorber 41 relieves the impact of torque load on the ratchet geared pulleys 15 and 16 which occurs when the water level switches between rising and falling in normal times, and when the water level changes suddenly under severe wave conditions such as breaking waves. This is for providing a strain energy storage function.

FIG. 6 shows the structure of the mounting portion of the shock absorber 41 mounted on the torque transmission rod 21. The end of the torque transmission rod 21 is provided with two support plates 42,
The bearing 43 is rotatably supported by bearings 42a and 43a. A pulley 44 with a spring is mounted between the support plates 42 and 43 of the torque transmission rod 21.
The spring 46 of the pulley 44 with a spring is housed in a cylindrical case 45 attached to the side surface of the pulley 44. FIGS. 7 and 8 show a state where the mainspring spring 46 is stored.
The other end 46b is fixed to the inner wall surface of the
It is fixed to the surface. 7 shows a state in which the mainspring spring 46 is unwound, and FIG. 8 shows a state in which it is tightened.

In the shock absorbing device 41, when the torque transmission rod 21 rotates due to a sudden change in the water level under severe wave conditions such as rising and falling of the water level and breaking waves in normal times, the mainspring spring 46 is tightened and then gradually unwound. As a result, the shock of the torque load on the pulleys with ratchet gears 15 and 16 is relieved and the strain energy is accumulated. The rotational energy transmitted to the torque transmitting rod 21 is transmitted to a power generator (not shown) via a belt 47 wound around a pulley 44 with a mainspring spring.

In this embodiment, the torques transmitted in opposite directions transmitted by the torque transmitting rods 21 and 22 in FIG. 1 or FIG. May be aligned. In the example shown in FIG. 9, the ratchet gear 51 is
The gear 52 is attached via the
A gear 53 is attached to 2 and the gears 52 and 53 are engaged. The ratchet gear 51 transmits only the rotation of the gear 52 in the counterclockwise direction to the torque transmission rod 21. With such a configuration, the torque transmitted by the torque transmission rod 22 is transmitted to the gears 52 and 53.
After the rotation direction is changed by the ratchet gear 51,
Is transmitted to the torque transmission rod 21 via the. Therefore, the torque transmitted by the torque transmission rods 21 and 22 can be combined and output from the torque transmission rod 21.

As shown in FIG. 5, in the energy conversion device in which a plurality of units 40 are connected, the rotational motion of the pulley 14 in each unit 40 in one rotational direction can be transmitted to one torque transmission rod 21. The rotational movement of the pulley 14 in the other rotational direction at 40 can be transmitted to one torque transmission rod 22. Therefore, with this energy conversion device, it is possible to effectively obtain energy from arbitrary water level fluctuations, particularly, waves having a short wavelength.

Although FIG. 5 shows an example in which the units 40 are arranged in one row, the units 40 may be arranged in a plurality of rows.
Further, the energy obtained by the units 40 arranged in these rows may be combined.

As described above, the water surface wave energy converter of the first embodiment has a simple structure and is easy to install. In addition, as long as there is little restriction on the installation place and there is only a water surface fluctuation that is not extremely short cycle, the water surface wave energy can be converted into rotational energy.

Further, according to the present embodiment, since the horizontal dimensions of the individual floats 19 can be reduced, it is possible to greatly reduce the decrease in energy conversion efficiency due to the leveling of the water surface being leveled in the horizontal direction. Is done. That is, there is little restriction even in the case of a wave having a relatively short wavelength, and energy can be efficiently extracted.

Further, according to the present embodiment, a large torque can be obtained by increasing the length of the arm of the pulley 14, that is, by increasing the radius of the pulley 14. When the torque at the energy input source is large, the power of the counterweight 20 can be doubled and taken out. This magnification is determined in consideration of the followability of the float 19 to fluctuations in the water level in the ratio of the torque required in the final stage to the torque at the input source.

Further, in the water surface wave energy conversion device of the present embodiment, the ratchet gear, which is a fatigue component, can be relatively easily replaced, so that it can be used for a long time.

FIGS. 10 to 13 show the configuration of a water surface wave energy converter according to a second embodiment of the present invention. Here, FIG. 10 is a front view of the energy conversion device, FIG. 11 is a cross-sectional view taken along line BB of FIG. 10, and FIG. 12 is a cross-sectional view taken along line CC of FIG. . Note that the same components as those of the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

In the first embodiment, as shown in FIG.
Although one buffer device 41 is provided between a plurality of units 40 and a power generation device (not shown), in this embodiment, the buffer device 41 is provided for each unit.

In this embodiment, idler pulleys 113, 11 are provided on both sides of the pulley 14 with respect to the support plates 11, 11, respectively.
4 is attached. One end of the seawater-resistant rope 17 wound around the pulley 14 is connected to one idler pulley 1.
13 and is hung on the water surface 18 at the tip thereof.
A float 19 floating above is attached. The other end of the rope 17 is connected to the other idler pulley 114.
Through the water surface 18 and a float 19
Counterweight 115 which is smaller in water weight than the weight of
Is attached. In the present embodiment, the counterweight 115 is set so as to move up and down in water in order to prevent the counterweight 115 itself from swinging in a strong wind. Also, unlike the first embodiment, the shape of the counter weight 115 is a streamline shape that is long in the vertical direction, and reduces the fluid resistance during the vertical movement.

A rotary shaft 116 is provided on the support plates 11, 11 below the torque transmission rod 21, and pulleys 118, 119 are coaxially mounted on the rotary shaft 116. Pulley 118 and pulley 1 with ratchet gear
5, a belt 25 is stretched. Further, a belt 111 is stretched between the pulley 119 and the pulley 23. Further, a rotation shaft 120 is provided on the support plates 11 and 11 below the torque transmission rod 22.
Pulleys 121 and 122 are coaxially attached to 20. A belt 26 is stretched between the pulley 121 and the pulley 15 with a ratchet gear. Also, pulley 1
A belt 112 is stretched between the pulley 22 and the pulley 24.

In this embodiment, as shown in FIG. 12, a shock absorber 41 is attached to the back of the pulley 119. The shock absorber 41 has the same configuration as that of the first embodiment except that the torque transmission rod 21 is changed in the rotating shaft 116. It is designed to relieve the impact of torque load on the pulleys with ratchet gears 15 and 16 generated when the water level changes suddenly under severe wave conditions, and to have a function of accumulating strain energy. Although not shown, the shock absorber 41 is similarly attached to the pulley 122 side.

Here, considering the balance at rest, the balance formula in the present embodiment is as follows.

[0048]

(S ₂ −1) · w · V ₂ = (S ₁ −α) · w · V ₁ (3)

When S ₁ is obtained by modifying the above equation, the following equation is obtained.

[0050]

S ₁ = α + (S ₂ −1) · V ₂ / V ₁ (4)

Also in this embodiment, the specific gravity (that is, the material) S ₁ of the float 19 is set on the condition that the draft rate α, the specific gravity S _{2 of the} counterweight 20 and the volume V ₂ are conditions.
The volume ratio V ₂ / V ₁ is determined in consideration of the shape and balance, and can be determined by the above equation (4). In order to suppress the horizontal movement of the float 19 due to waves or currents on the sea surface, it is advantageous to increase the tension of the rope 17. Based on this fact, the float 19 and the counterweight 115 are calculated from the above equations (3) and (4). May be determined.

In the water wave energy converter of the present embodiment,
When the water surface 18 moves up and down, the float 19 moves up and down, thereby causing the pulley 14 to rotate while alternately changing the rotation direction. Here, when the water level rises, the float 19
Buoyancy acting on the counterweight 11
5 (water weight)-(weight of the float 19-buoyancy acting on the float 19)] creates a torque for rotating the pulley 14 clockwise in the figure, and when the water level falls, the buoyancy acting on the float 19 is small. [(Weight of float 19-buoyancy acting on float 19)-weight of counterweight 115 (weight in water)] is the pulley 14
Produces a torque that rotates counterclockwise in the figure.

The rotational movement of the pulley 14 in the counterclockwise direction is transmitted to the rotary shaft 116 via the pulley 15 with the ratchet gear, the belt 25 and the pulley 118. The rotation of the rotation shaft 116 is controlled by a pulley 119,
Torque transmission rod 2 via belt 111 and pulley 23
1 is transmitted. On the other hand, the clockwise rotation is performed by the pulley 16 with the ratchet gear, the belt 26 and the pulley 12.
1 to the rotating shaft 120. This rotating shaft 12
The rotational motion of 0 is transmitted to the torque transmission rod 22 via the pulley 122, the belt 112, and the pulley 24. Therefore, also in the present embodiment, the torque transmission rod 21 and the torque transmission rod 22 rotate in directions opposite to each other, but their rotation directions are always constant. In this way, the vertical fluctuation of the water surface 18 is converted into a rotational motion in which the rotational direction does not change.

In the shock absorber 41 attached to the back surface of each of the pulleys 119 and 122, the rotating shaft 116 and the rotating shaft 120 rotate due to a sudden change in the water level under severe wave conditions such as rising or falling of the water level or breaking waves in normal times. Then, the mainspring spring 46 is tightened and then gradually unwound, thereby relieving the impact of the torque load on the ratchet pulleys 15 and 16 and accumulating the strain energy.

FIG. 13 shows an example in which a plurality of the energy conversion devices shown in FIG. 10 are connected. In this example, the energy conversion device shown in FIG.
And the plurality of units 130 are
The torque transmission rods 21 and 22 of each unit 130 are connected to each other by a universal joint (not shown). Each unit 130
The support plate 11 of each unit 130 is
As in the first embodiment, each component is supported so that the components 1 and 22 are arranged on a substantially straight line, and are finally connected and fixed to each other.

In the present embodiment, unlike the first embodiment, a buffer device 41 is provided for each unit 130. With such a configuration, each buffer device 41 has As in the first embodiment, the total of the torque loads from all the units is not always applied.
Therefore, the function as a buffer element against the fluctuation of the torque input from each unit 130 can be sufficiently exhibited.

Having described a specific embodiment of the present invention, a method of installing the water surface wave energy converter will now be described.

This energy conversion device may be installed at a position close to the land shore, or may be installed at a position relatively distant from the land shore. In the case of installation near the shore, for example, just like erection of a bridge, several concrete piers (piers) are arranged, and a grid girder (or perforated plate) is placed on them to make a support base. The energy conversion device of the above embodiment is placed on a table. In reality, it can be installed as ancillary facilities under a bridge such as a bay bridge. This method can also be used when natural terrain such as rocks exposed on the sea surface can be used. On the other hand, when installed at a position away from the shore, for example, on a large floating body such as a waste ship, for example, projecting a plurality of support bases on the sea surface in the form of a double balance, placing the grid girder support on this, The energy converter of the above embodiment is placed on the support base. In addition, in order to prevent the float 19 from being largely moved in the lateral direction, it is preferable that the weight is submerged on the seabed, and the weight and the lower end of the float 19 are connected by a chain.

Next, a method of using the energy conversion device will be described.

Normally, on the sea, the wave energy at a specific place fluctuates greatly with time. As a method of smoothing this, it is conceivable to use the energy conversion device of the present invention together with the ocean temperature difference power generation. That is, the energy obtained by the wave power generation is temporarily converted into heat energy and used as a high-temperature source for ocean temperature difference power generation. In addition, it may be used in combination with pumped storage power generation. That is, the energy obtained by the wave power may be used for pumping water from the lower pond to the upper pond, and the energy for general supply may be energy generated when descending from the upper pond to the lower pond.

The energy converter of the present embodiment can be used as an energy source for primary conversion for wave power generation and for water exchange between a closed water area and the open sea. Further, in this energy conversion device, when the incident wave passes through an energy conversion device having a plurality of rows of float groups, the energy of the water level fluctuation is lost. Therefore, this energy conversion device can be expected to have a wave breaking effect, that is, a function as a breakwater. Also, unlike ordinary breakwaters, this device does not affect seawater exchange due to tides, so the bottom water whose quality has deteriorated does not stay in the bay, and furthermore, it is necessary to construct a normal breakwater. There is no such thing as changing the seafloor terrain.

The present invention is not limited to the above embodiment, but can be variously modified. For example, in the above-described embodiment, the shock absorber 41 using the mainspring 46 has been described. However, a torque limiter may be used as the shock absorber and a torque larger than a predetermined value may not be transmitted. Further, in the above embodiment, the belts 25 and 26 are used for transmitting torque, but a chain may be used instead, and a chain gear may be used instead of the pulleys 15, 16, 23, and 24.

[0063]

【The invention's effect】

[0064]

[0065] According to water waves energy converter according to claim 1, a sliding wheel that will be placed above the water surface, and b-loop wound around the smooth wheel, attached to one end of the b-loop a full <br/> funnel you floating on the water surface with a substantially suspended vertically, lighter weight than float by being suspended in a substantially vertical direction is attached to the other end of the b-loop , when the water level rises in response to the increase of the buoyancy acting on the float, act synovial wheel to rotate in one rotational direction, when the water level descends in accordance with the decrease of the buoyancy acting on the float, slipping wheel output and Luca counter weight to act <br/> to rotate in the other rotational direction, the one-way rotational energy
It has a first output shaft for, the water surface is located above, rotation of one rotational direction of the reciprocating rotational motion of the companion intends slipping wheel up and down motion of the float arising by water of vertical movement First rotational movement extracting means for extracting the movement and outputting it via a first output shaft; and rotating energy in the other direction.
It has a second output shaft for outputting lugi and is disposed above the water surface, and is caused by vertical movement of the water surface
That is taken out to the vertical motion of the float of the other rotary motion of the rotating direction of the reciprocating rotational motion of the companion intends slipping wheel, the second output
And a second rotary motion take-out means for outputting via a shaft
A plurality of units are provided, and the first and
Since the second output shafts are connected to each other ,
There is an effect that the vertical movement of the water surface can be easily converted into a rotational movement in which the rotational direction does not change. Furthermore, there is an effect that it is possible to effectively obtain energy from arbitrary water level fluctuations, particularly, waves having a short wavelength.

Further, according to the water wave energy converter of the third aspect , between the first ratchet mechanism and the first output shaft and between the second ratchet mechanism and the second output shaft. Since the shock absorbers are provided for the first and second ratchet mechanisms, respectively, the impact of the torque load on the first ratchet mechanism or the second ratchet mechanism can be relieved, the strain energy can be stored, and the energy conversion efficiency is improved. Further, according to the water wave energy conversion device of the fourth aspect, in a state where the float is floating on the water surface, the cross-sectional area is maximum at the position of the draft surface at the time of still water, and the cross-sectional area becomes smaller as the distance increases. Since it is configured to have a flat shape, the loss of energy conversion due to a change in the position of the draft surface can be reduced.

According to the water surface wave energy converter of the fifth aspect, the rotational energy output from the first output shaft and the rotational energy output from the second output shaft are combined to form one Since the synthesizing means for the rotational energy in the rotational direction is provided, in addition to the above-described effects, there is an effect that the use of the rotational energy becomes convenient.

[Brief description of the drawings]

FIG. 1 is a front view illustrating a configuration of a water surface wave energy conversion device according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view showing a part of a pulley with a ratchet gear using a one-way clutch.

FIG. 4 is a sectional view showing another operation state of a part of the pulley with a ratchet gear of FIG. 3;

5 is a perspective view showing a water surface wave energy conversion device having a configuration in which a plurality of components shown in FIG. 1 are connected.

FIG. 6 is a sectional view showing a structure of a mounting portion of the shock absorber.

FIG. 7 is a sectional view showing an attachment structure of a mainspring spring.

FIG. 8 is a cross-sectional view showing a mounting structure of a mainspring spring.

FIG. 9 is a front view showing a gear for aligning torques in opposite directions transmitted by two torque transmission rods in FIG. 1 or 5 in one direction.

FIG. 10 is a front view illustrating a configuration of a water surface wave energy conversion device according to a second embodiment of the present invention.

FIG. 11 is a sectional view taken along the line BB of FIG. 10;

FIG. 12 is a sectional view taken along line CC of FIG. 10;

13 is a perspective view showing a water surface wave energy conversion device having a configuration in which a plurality of components shown in FIG. 10 are connected.

[Explanation of symbols]

14 Pulley 15 Pulley with Ratchet Gear (First Ratchet Mechanism) 16 Pulley with Ratchet Gear (Second Ratchet Mechanism) 17 Rope 19 Float 20 Counter Weight 21 Torque Transmission Rod (First Rotary Shaft) 22 Torque Transmission Rod (First Ratchet Mechanism) 2 rotary shaft) 23, 24 pulley 41 shock absorber

Claims (4)

(57) [Claims] And 1. A sliding wheel that will be placed above the water surface, to the floating and B-loop wound around the pulley, the water surface together with the suspended substantially in the vertical direction is attached to one end of the rope that the float, the lighter weight than the float, by being suspended in a substantially vertical direction mounted to the other end of the rope,
During level rise, with an increase of the buoyancy acting on the float, the pulleys and act to rotate in one rotational direction, when the water level descends in accordance with the decrease of the buoyancy acting on the float, said pulley and Luca counter weight to act to rotate in the other rotational direction, the first output shaft for outputting a one-way rotational energy
And having, arranged above the water surface, remove one of the rotational motion of the rotating direction of the reciprocating rotary motion of the <br/> pulley due to vertical motion of the float caused by water of vertical movement, the first 1st output via 1 output shaft
And a second output shaft for outputting rotational energy in the other direction.
And having, arranged above the water surface, remove the other rotational motion of the rotating direction of the reciprocating rotary motion of the <br/> pulley due to vertical motion of the float caused by water of vertical movement, the first 2nd output through the 2nd output shaft
A plurality of units each including a rotary motion extracting means, and wherein the first and second output shafts of each unit are the same.
A surface wave energy conversion device, wherein the water waves are connected to each other . 2. A each unit, the first rotational movement take-out means, first transmit rotational movement only in one direction of rotation of the reciprocating rotary motion of the pulley to the first output shaft has a ratchet Organization of the second rotary motion take-out means, the second ratchet you transmit rotational movement only in the other rotational direction of the reciprocating rotational motion of the pulley to the second output shaft water waves energy converter according to claim 1, characterized in that it comprises a machine structure. 3. A each unit, between the first output shaft and the first ratchet mechanism,
Respectively accumulate strain energy with soften the impact of the torque load on the first ratchet mechanism and the <br/> second ratchet mechanism between and said second ratchet mechanism and the second output shaft 3. The water surface wave energy conversion device according to claim 2, further comprising a shock absorber. 4. In each of the units, the float has a flat shape such that when floated on the water surface, the cross-sectional area is maximum at the position of the draft surface at the time of still water, and the cross-sectional area decreases as the float moves away from the water surface. The water surface wave energy conversion device according to any one of claims 1 to 3, wherein the water surface wave energy conversion device is configured.