JP4512915B2 - Power generation device by wave force - Google Patents

Description

  The present invention relates to a power generation apparatus using wave power, and more particularly to a power generation apparatus using wave power with a simple structure and high reliability.

Waves are generated on the surface of water such as the sea and lake by the influence of wind and the like. Since this wave moves the water surface up and down, many attempts have been made to use this energy. For example, a power generation apparatus using wave force that uses a float floating near the water surface and changes the movement of the float rising and falling by waves into energy such as electric power has been invented so far (see, for example, Patent Document 1).
Patent Document 1 states that “a fixed body standing at a fixed position in the sea, a reciprocating movement in the vertical direction with respect to the fixed body, and a float is provided so that it can float in the sea. The movable body is provided with a rack, and the fixed body has at least two pinions that can be meshed with the rack. The pinions are supported on the rotary shafts attached to the fixed body and each pinion rotates once. Coupled to each rotary shaft via a one-way clutch capable of transmitting rotational force only in the direction, and the directions in which each one-way clutch can transmit rotational force are opposite to each other, and the respective rotary shafts are always opposite to each other and constant. In addition, each rotary shaft is connected to the drive shaft of the generator through a power transmission mechanism so that the rotation of the generator is in the same direction. It can be driven in the same direction Describes a wave power generator. "You.

Japanese Utility Model Publication No. 6-34036 (Claim for Utility Model Registration, Claim 1)

However, the wave power generation device described in Patent Document 1 described above includes a rack, at least two pinions that can be meshed with the rack, and rotation of each rotation shaft that is supported by each pinion and rotated in the opposite direction. There is a problem that the structure becomes complicated because it is necessary to include a power transmission mechanism that transmits the generator so that the rotation of the generator is in the same direction.
In addition, the power transmission mechanism used by the wave power generator described in Patent Document 1 needs to transmit the rotation of each rotating shaft driven and rotated in the opposite direction so that the rotation of the generator is in the same direction. It is necessary to use a crossed belt, etc., and there is a possibility that troubles may occur due to the belt coming off, etc. (When a belt is not used, it is necessary to use a gear train, etc.) There are problems such as an increase in the number and complexity of the structure.)

  Therefore, an object of the present invention is to provide a power generation device using wave power that has a simple structure, is less likely to cause trouble, and has high reliability.

  The power generation apparatus using wave force according to the present invention (hereinafter referred to as “the present apparatus”) is supported so as to be capable of reciprocating with respect to the main body by waves of the main surface and the water surface having a float floating in the vicinity of the water surface. A reciprocating portion, and the main body portion is rotatably attached to one direction side of the reciprocating motion and rotatably attached to the other direction side of the reciprocating motion. And a reciprocating member constituted by an endless belt stretched between the one-way engaging means and the other-direction engaging means. The moving part engages with one part of the revolving member along the reciprocating direction, so that the reciprocating part moves in one direction when the reciprocating part moves in the first direction of the reciprocating movement. A first engaging portion that rotates and engages with the other portion of the rotating member along the direction of the reciprocating motion And when the reciprocating portion moves in a second direction opposite to the first direction of the reciprocating motion, the second engaging portion rotates the rotating member in one direction. This is a power generation device using wave power.

First, the apparatus includes a main body portion and a reciprocating motion portion. The main body portion is supported so that the reciprocating motion portion can be relatively displaced with respect to the main body portion when the reciprocating motion portion reciprocates along with the floating movement caused by the waves. The body part is not particularly limited as long as it can support the device with sufficient strength, and is not limited at all. Examples include buried piles, pipes, wharves, breakwaters, and floating supports (such as dredging, ships, ships, etc.) that have a displacement different from the displacement of floating. The reciprocating part has a float that floats near the water surface, and the reciprocating part supported so as to be able to reciprocate with respect to the main body part moves back and forth with respect to the main body part by moving the floats by waves on the water surface. Exercise.
And the main-body part has a one-way engagement means, another-direction engagement means, and a surrounding member. The one-way engaging means is rotatably attached to one direction side of the reciprocating motion (reciprocating motion performed by the reciprocating motion portion with respect to the main body portion). The other-direction engaging means is rotatably attached to the other direction side of the reciprocating motion. The circling member is constituted by an endless belt (for example, a chain or a belt), and is stretched between the one-way engaging means and the other-direction engaging means so as to be able to circulate. Therefore, the orbiting member can freely circulate while maintaining the state of being stretched between the one-way engaging means and the other-direction engaging means.
Furthermore, the reciprocating motion part has a first engagement part and a second engagement part. The first engagement portion is formed between one part (one-way engagement means and other-direction engagement means) of the revolving member along the direction of the reciprocating motion (reciprocating motion that the reciprocating motion portion performs with respect to the main body). When the reciprocating motion part moves in the first direction (one of the two directions of the reciprocating motion) of the reciprocating motion by engaging with one of the existing two portions of the revolving member. The circling member is circulated in one direction (any one of the two directions in which the circling member circulates). The second engaging portion is the other part of the orbiting member along the direction of the reciprocating motion (in the one part of the two parts of the orbiting member existing between the one-way engaging means and the other-direction engaging means). The reciprocating part moves in the second direction opposite to the first direction in the reciprocating movement (the other direction that is not the first direction in both directions of the reciprocating movement). When rotating, the circulating member is rotated in one direction. Therefore, when the reciprocating part moves in the first direction of the reciprocating movement, the first engaging part circulates the orbiting member in one direction, and the reciprocating part moves in the second direction of the reciprocating movement. In some cases, the second engagement portion causes the orbiting member to orbit in the one direction, so that the reciprocating motion portion moves relative to the main body portion in either the first direction or the second direction of the reciprocating motion. The circulating member is driven in the one direction to rotate.

For this reason, if this device is installed so that the float is moved by waves on the water surface, the reciprocating motion (vertical motion) of the float is caused by the waves. Since it is driven in the direction and circulates, power can be generated by wave force by taking out the circulatory force of the circulatory member. The rotating force of the rotating member can be extracted by various methods. For example, by providing a gear that engages and rotates with the rotating member, the rotating force can be extracted, or one-way engaging means or the like. The rotational force of the direction engaging means can be used as it is.
The device has a simple structure because the wave force directly circulates around the rotating member by the first engaging portion and the second engaging portion, and the combination of the structure and the robust structure causes trouble. Etc. and the reliability is high.
In addition, since this device is driven only by wave energy, which is natural energy, and generates power, it does not consume any extra energy and does not cause problems such as environmental pollution or environmental destruction. is there.

The first engagement portion and the second engagement portion may be fixed in position (hereinafter referred to as “engagement portion position fixing device”).
By doing so, the positional relationship between the first engaging portion and the second engaging portion does not change, so that the first engaging portion and the other portion of the rotating member along the reciprocating motion direction The state in which the second engaging portion is engaged can be stably maintained.

In the case of the engaging portion position fixing device, the first engaging portion and the second engaging portion sandwich the orbiting member, or the first engaging portion and the second engaging portion are the orbiting. It may be either clamped by a member.
By doing so, the force applied to the first engaging portion by the rotating member (the force by which the rotating member pushes back the first engaging portion, that is, the force in the direction substantially perpendicular to the direction of the reciprocating motion), and the rotating member The force applied to the second engaging portion by the rotation (the force that the rotating member pushes back the second engaging portion, that is, the force in the direction substantially perpendicular to the direction of the reciprocating motion) is opposite to each other and is erased from each other. (If the first engagement portion and the second engagement portion sandwich the orbiting member, a force is applied so that the first engagement portion and the second engagement portion move away from each other. Force is applied so that the first engagement portion and the second engagement portion come close to each other when the portion and the second engagement portion are sandwiched between the rotation members, and the first engagement portion with respect to the rotation member, The position of the second engagement portion is not easily changed unexpectedly, and the one part and the other part of the revolving member along the direction of the reciprocating motion A state where the first engagement portion and the second engagement portion are engaged can be maintained more stably.

The first engaging portion and the second engaging portion have a disk or cylindrical shape whose outer peripheral portion engages with the rotating member, and can freely rotate in one direction around the central axis of the disk or cylinder. And the other may be non-rotatable and may be attached in a direction that causes the orbiting member to circulate in the one direction.
By doing so, the outer peripheral part of the disk or cylindrical shape engages with the rotating member, so that it can rotate even if any part of the outer periphery is engaged with the rotating member by rotating around the central axis of the disk or cylinder. The member can be successfully engaged, and the state where the first engaging portion and the second engaging portion are engaged with the rotating member can be stably maintained.
There are many known examples of such a disc or cylinder that can rotate freely on one side and cannot rotate on the other, and will not be described in detail. Among the sprockets engaged with the chain, those located on the rear wheel side (with a built-in clutch that transmits force only in one direction) can be used.

A plurality (two or more) of the first engaging portion and the second engaging portion may be disposed along the reciprocating direction.
In this way, the first engagement portion and the second engagement portion can be more reliably engaged with the orbiting member, and the lengths of the one portion and the other portion of the orbiting member can be reduced. As a result, the apparatus can be reduced in size and weight. The length of the one part or the other part can be reduced as long as at least one of the plurality (two or more) provided is engaged with the one part or the other part. Therefore, as compared with the case where only 1 is provided, the reciprocating motion is an extra portion which is approximately twice the distance between both ends along the reciprocating motion direction among the plurality (2 or more) provided. Displacement of the reciprocating motion performed by the reciprocating motion portion relative to the main body portion can be allowed (in other words, if the displacement of the reciprocating motion is the same, the length of the one portion or the other portion is Can be reduced.)

The power generator may further include a generator driven by the circulation of the circulation member.
By doing so, power can be generated from the wave power as electric power with high utility value by this apparatus.

When the float floats in the vicinity of a calm water surface, an upper protrusion that exists above the water surface, a water inlet formed in the upper protrusion, and water received from the water inlet are stored. And a storage part (hereinafter referred to as a “water storage device”).
Here, the “smooth water surface” refers to the water surface where there is no wave.
In this way, when the wave becomes rough to some extent (when the wave height becomes higher than a certain level), water enters from the water inlet formed in the upper protrusion above the water surface and is accepted from the water inlet. Water is stored in the storage part. For this reason, the float becomes heavier by the weight of the water stored in the reservoir (the buoyancy of the float is reduced), and thereby the position of the float is lowered. Normally, when a wave becomes rough (when the wave height becomes high), the float is likely to be greatly displaced in the upward direction (that is, the lift is pushed up), which can damage the float itself or other parts of the device or shorten its life. However, in the case of a water storage device, when the wave becomes rough (when the wave height becomes high), the floating position is automatically lowered (as described above, water is stored in the storage part). The position of the float naturally lowers.) The maximum position of the displacement of the float is lowered, and these problems of breaking and shortening the life can be prevented or reduced.

In the case of a water storage device, at least a part of the storage unit exists above the calm water surface, and the float has a discharge port that communicates with the outside from the storage unit and discharges water (hereinafter, It may be referred to as an “exhaust port possessing device”).
As mentioned above, if the wave becomes rough (when the wave height becomes high), the problem of damage and shortening of the life can be prevented or reduced if water is stored in the storage part and the floating position is lowered. When the wave returns to the normal state (when the wave height becomes low), it is not necessary to store water in the reservoir. For this reason, at least a part of the storage part (part or all of the storage part) exists above the calm water surface, and a wave is usually generated by providing a discharge port that communicates from the storage part to the outside and discharges water. When returning to the above state (when the wave height becomes low), unnecessary water may be discharged from the reservoir through the discharge port. As a result, when the waves become rough (when the wave height becomes high), the water is stored in the storage part to lower the floating position, and when the wave returns to the normal state (when the wave height becomes low), the storage part The water can be drained and the floating position can be returned to the original position.

In the case of a discharge port possessing device, when a predetermined amount or more of water is received in the storage unit, water is discharged from the discharge port so that the water received in the storage unit is stored for one or more cycles of the wave. There may be.
Here, “more than a predetermined amount of water” means that the wave becomes rough (the wave height becomes high) and the float is greatly displaced in the upward direction (that is, the float is pushed up), so that the float itself and other parts of the apparatus are Water that exceeds the amount of water that can be received from the water inlet at the lowest possible wave roughness (wave height), which can cause problems such as breakage and shortened life. Further, “one wave period” means one wave period (time) generated on the water surface where the float floats. And "the water received in the storage unit is stored for one or more cycles of the wave" means that when at least a part of the water received in the storage unit has been received by the storage unit has passed one cycle of the wave, It is still stored in the storage part.
In this way, when the wave becomes rough (the wave height becomes high), water is continuously stored in the storage part, so that the position of the floating can be kept continuously lowered, It is possible to surely prevent or reduce the problems of other parts of the apparatus and the shortening of the service life.

In the case of a discharge port owning device, water is discharged from the discharge port so that the amount of water in the storage section does not increase even if there is the maximum rainfall expected in the place where the float is placed. Also good.
Since it is not preferable that rainwater due to rainfall enters from the water entrance and the rainwater that has entered enters the reservoir, the amount of water in the reservoir does not increase even if there is a maximum expected rainfall. Water may be discharged from the discharge port.

In the case of the water storage device, it may have a wave receiving plate formed on the outer surface below the water inlet so as to protrude from the outer surface of the upper protrusion.
By doing so, the water flow that rises over the outer surface of the upper protrusion (usually caused by waves or water currents) is disturbed by the wave receiving plate, so that the outer surface of the upper protrusion is hung. In addition to the force of the rising water flow being received by the wave plate, the rising force of the float can be generated (the power of the rising water flow can be converted into power), and the water flow is applied to the outer surface of the upper protrusion. It is possible to prevent or reduce the entry to the water inlet (water preferably enters the water inlet when the wave becomes rough (the wave height becomes high)).

A part that is located under a calm water surface and infiltrates into the water, and a weight having a part that is exposed at least partially in the process of the water surface descending by a wave, is attached directly or indirectly to the float (hereinafter referred to as the following) Or “weight-owning device”).
In the process of lowering the water surface by waves, the buoyancy due to water usually disappears, and the reciprocating motion part descends due to gravity that has been balanced with buoyancy. For this reason, the descending force of the reciprocating part is determined by the weight of the reciprocating part, and it is necessary to increase the weight in order to increase the descending force. However, if the weight of the reciprocating portion is simply increased, the force that raises the reciprocating portion is weakened (the increase in weight reduces the floating buoyancy). For this reason, a weight that increases the force that pulls the reciprocating part downward in the process of the water surface descending by the wave and that reduces the force that pulls the reciprocating part downward in the process of the water surface rising by the wave floats. You may attach directly or indirectly. Examples of such weights include a portion that is located below a calm water surface and infiltrates into water, and has a portion that is at least partially exposed in the process of the water surface being lowered by waves. In the process in which the water surface rises due to waves, buoyancy is applied to the weight by the portion of the weight that enters the water, so the force that pulls the reciprocating part downward is small (the force obtained by subtracting the buoyancy from the weight of the weight). In the process of moving down due to the wave, at least a part of the part is exposed (on the water), so the buoyancy is reduced (the part of the buoyancy generated by the part is reduced). The force to lower can be increased.
In addition, “the weight is indirectly attached to the float” means that the weight and the float are separated so that the weight and the float move together with the reciprocating motion performed by the reciprocating motion portion with respect to the main body portion. For example, the case where the weight and the float are connected by another member is included.

In the case of a weight-owning device, the exposed at least part may include a part constituted by water.
In this way, for the part composed of water (water constituent part), the weight of the water constituent part and the buoyancy of the water constituent part are just balanced, so the water constituent part is Since no force is applied to the reciprocating portion when positioned below, no force is generated to pull the reciprocating portion downward by providing a water component. On the other hand, in the process in which the water surface is lowered by the wave, the water component is exposed (on the water), the buoyancy generated by the exposed object disappears, and the weight of the exposed object pulls the reciprocating part downward. To join. As described above, the water component included in at least a part of the exposed portion can increase the force for pulling down the reciprocating motion part in the process in which the water surface is lowered by the wave, but it is reciprocated in the process in which the water surface is raised by the wave. It is possible to prevent a force that pulls the moving part downward.

In the case of a weight-owning device, the weight is received from the weight upper protrusion formed above the assumed calm water surface, the weight water inlet formed in the weight upper protrusion, and the weight water inlet. And a weight storage section for storing water (hereinafter referred to as “weight water storage device”).
Here, the “smooth water surface” refers to the water surface where there is no wave.
In this way, when the wave becomes rough to some extent (when the wave height becomes high to some extent), water enters from the weight water inlet formed in the upper part of the weight above the water surface, and the weight water inlet The water received from is stored in the weight reservoir. For this reason, the weight becomes heavier by the weight of the water stored in the weight storage section, thereby lowering the floating position. Normally, when a wave becomes rough (when the wave height becomes high), the float is likely to be greatly displaced in the upward direction (that is, the lift is pushed up), which can damage the float itself or other parts of the device or shorten its life. However, in the case of a weight water storage device, when the wave becomes rough (when the wave height becomes high), the floating position is automatically lowered (as described above, water is stored in the weight storage part). As a result, the position of the float naturally lowers.) The maximum position of the displacement of the float is lowered, and the problem of breakage or shortening of the life can be prevented or reduced.

In the case of a weight water storage device, at least a part of the weight storage part exists above the assumed calm water surface, and the weight communicates to the outside from the weight storage part to discharge water. It may be one having an outlet (hereinafter referred to as “weight discharge port possessing device”).
As described above, when the wave becomes rough (when the wave height becomes high), it is possible to prevent or reduce the problem of breakage and shortening the life by storing water in the weight storage part and lowering the floating position. Therefore, when the wave returns to the normal state (when the wave height becomes low), it is not necessary to store water in the weight storage part. For this reason, at least a part of the weight storage part (part or all of the weight storage part) exists above the assumed calm water surface, and a weight discharge port for discharging water from the weight storage part to the outside is provided. By providing, when the wave returns to the normal state (when the wave height becomes low), unnecessary water may be discharged from the weight reservoir through the weight discharge port. As a result, when the wave becomes rough (when the wave height becomes high), the weight is stored in the reservoir to lower the floating position, and when the wave returns to the normal state (when the wave height becomes low), the weight Water can be discharged from the reservoir and the floating position can be returned to the original position.

In the case of a weight discharge port owning device, when a predetermined amount or more of water is received in the weight storage unit, water is discharged from the weight discharge port so that the water received in the weight storage unit is stored for one or more cycles of the wave. It may be done.
Here, “more than a predetermined amount of water” means that the wave becomes rough (the wave height becomes high) and the float is greatly displaced in the upward direction (that is, the float is pushed up), so that the float itself and other parts of the apparatus are Water that exceeds the amount of water that can be accepted from the weight entrance at the lowest possible wave roughness (wave height) that can cause problems such as breakage and shortened life. Further, “one wave period” refers to one wave period (time) generated on the water surface closest to the weight. And, “the water received in the weight storage part is stored for one or more cycles of the wave” means that at least a part of the water received in the weight storage part has been received by the weight storage part and one cycle of the wave has passed. It means that it is still stored in the weight storage part.
In this way, when the wave becomes rough (the wave height becomes high), water is continuously stored in the weight storage part, so that the position of the floating can be kept continuously lowered, and the floating itself In addition, it is possible to reliably prevent or reduce the problem of damage to other parts of the apparatus and shortening of the service life.

In the case of a weight discharge port owning device, water is discharged from the weight discharge port so that the amount of water in the weight storage part does not increase even if there is the maximum rainfall expected in the place where the weight is placed It may be.
Since it is not preferable that rainwater due to rainfall enters from the weight entrance and is stored in the weight storage part, the amount of water in the weight storage part does not increase even if there is a maximum expected rainfall. As described above, water may be discharged from the weight discharge port.

In the case of the weight water storage device, a weight wave receiving plate formed on the outer surface below the weight water advancement inlet so as to protrude from the outer surface of the weight upper protrusion may be provided.
By doing so, the water flow that rises over the outer surface of the weight upper protrusion (usually caused by waves or water flow) is disturbed by the weight wave receiving plate, so that the weight upper protrusion In addition to the force of the water flow that rises on the outer surface and the wave receiving plate receives the lifting force of the float (the power of the water flow that rises can be converted into power), the water flow is applied to the outer surface of the upper protrusion. Ascending can prevent or reduce the entry of water into the weighted water inlet (water is preferably entered into the weighted water inlet when the waves become rough (the wave height increases). ).

The bottom surface of the float or the weight may have a shape that tapers downward.
By doing so, the resistance of the lower surface of the float or weight is reduced when it collides with the water surface and enters the water or when it moves in the water (including both when moving upward and when moving downward). Therefore, power can be generated efficiently using wave energy.

The main body portion may be attached to a rod-like member whose tip is embedded in the water bottom.
In this way, the device can be easily installed by burying the tip of a rod-like member (for example, a pile or pipe) in the bottom of the water. Since the tip of the rod-like member can be buried in the bottom of the water (it does not require underwater work), the apparatus can be arranged very easily. First, after burying the tip of a rod-like member (one not attached with this device) in the bottom of the water, secondly, the device is placed on the portion of the rod-like member with the tip buried under the water surface. If this is installed, this apparatus can be installed very easily. Also, the removal of this device can be easily done by pulling out the pipe (it can also be carried out from the surface of the ship, so that construction underwater is not required).

The floating body may be attached to a floating support that floats near the water surface and has a displacement different from that of the floating due to waves (hereinafter referred to as a “floating support using apparatus”).
In this way, the present apparatus can be installed using the floating support, so that a large-scale civil engineering work or underwater work is not required, so that the present apparatus can be arranged very easily.
In addition, “a floating support that has a displacement different from the displacement of the floating due to the wave” means that the displacement of the floating support due to the wave is different from the displacement of the floating support due to the wave. When the is attached to the floating support, the reciprocating part is displaced relative to the main body part in accordance with the displacement of the floating due to the wave, and can reciprocate.

In the case of a floating support using apparatus, the floating support includes a plurality of rod-shaped members that are arranged substantially parallel to each other in the longitudinal direction and floats near the water surface, and the floating is between the plurality of rod-shaped members. (Hereinafter, referred to as “bar-shaped member support using device”).
By using a floating support that includes a plurality of rod-shaped members that are arranged substantially parallel to each other in the longitudinal direction and float near the water surface, the float is reciprocated between the plurality of rod-shaped members. A floating support having a structure that does not hinder movement can be easily configured.

In the case of the rod-shaped member support using apparatus, the longitudinal direction of the plurality of rod-shaped members may be substantially parallel to the wave traveling direction.
By doing so, the waves reach the float that reciprocates between the plurality of rod-shaped members with almost no weakening, and power can be efficiently generated from the energy of the waves. That is, if the longitudinal direction of the plurality of rod-shaped members is not substantially parallel to the traveling direction of the waves, it is necessary for the waves to get over the rod-shaped members before the waves reach the float, or the reflected waves of the waves that collide with the rod-shaped members May cause a problem that the power of the wave that raises and lowers the float is reduced due to interference with the incident wave and the like, and the power that can be obtained is reduced (for example, the longitudinal direction of the plurality of rod-shaped members Considering the case perpendicular to the traveling direction of the wave, the wave must get over the rod-like member before the wave reaches the float, thereby weakening the wave reaching the float).

In the case of a floating support using apparatus, the size of the floating support along the wave traveling direction may be the same as or larger than the wave wavelength.
By doing so, since the floating support is in contact with one or more wavelengths of the wave, the displacement of the floating support due to the traveling of the wave is reduced, and the displacement of the floating support due to the wave is well differentiated from the displacement of the floating support due to the wave. (I.e., the displacement of the float due to the wave occurs as the wave progresses, but the displacement of the floating support due to the wave is small, so the relative change of both displacements is large). For this reason, when the main unit is attached to the floating support, the reciprocating unit can be displaced relatively well with respect to the main unit with the displacement of the float caused by the wave, so that power can be generated efficiently. Can be made.

The reciprocating direction may be installed so as to form a predetermined angle with respect to the water surface.
Here, “the direction of the reciprocating motion makes a predetermined angle with respect to the water surface” means a vertical plane including a straight line along the reciprocating motion (the reciprocating motion that the reciprocating motion portion performs with respect to the main body). Considering a cross section by a plane passing through the center of gravity of the float, the angle formed by the direction in which the wave advances toward the float in the cross section and the direction in which the float rises in both directions of the reciprocating motion is a predetermined angle. The angle formed is larger than 0 degree and smaller than 180 degrees, but the direction in which the float rises in the cross section has a positive component in the direction in which the wave travels (that is, when the progress of the wave helps lift the float). Is larger than 0 degree and smaller than 90 degrees, and the direction in which the float rises in the cross section has a negative component in the direction in which the wave travels (that is, when the progress of the wave prevents the rise of the float). Larger than 180 degrees and smaller than 180 degrees.
Further, the “predetermined angle” is equal to or longer than the time (t2) required for the float to move from the highest position to the lowest position (t1), which is half the period of the wave in contact with the float (time required for one cycle) ( t1> t2 or t1 = t2), and the time (t3) required for the float to move from the lowest position to the highest position is determined within a range where t1 or less (t3 <t1 or t3 = t1). Also, within such a range, t3 is preferably closer to t1, t3 is preferably 50% or more of t1 (t3> 0.5 × t1 or t3 = 0.5 × t1), and t3 is more Preferably, it is 70% or more of t1 (t3> 0.7 × t1 or t3 = 0.7 × t1), and t3 is most preferably 80% or more of t1 (t3> 0.8 × t1 or t3 = 0. 8 × t1). Such “predetermined angle” is usually greater than 10 degrees and 75 degrees or less, more preferably 30 degrees or more and 60 degrees or less, and most preferably 45 degrees or more and 60 degrees or less. It is.
By doing this, the lift is pushed up not only by the energy that the water surface moves up and down by the wave, but also by the energy that the wave travels (gets close), so that power can be generated more efficiently by the wave force. .

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited by these.

FIG. 1 is a front view showing a power generation device (this device) 11 using wave power according to an embodiment of the present invention, and FIG. 2 is a left side view of the device 11 (viewed from the direction of arrow A in FIG. 1). FIG. 3 is a plan view of the apparatus 11 (shown from the direction of arrow B in FIG. 1). The apparatus 11 will be described with reference to FIGS. 1 to 3. In FIG. 3, the output gear 37 and the portion of the rotary shaft 32 protruding from the pipe 101 on the output gear 37 side are not shown for ease of explanation.
1 to 3 are installed so that the axis of the cylinder formed by the pipe 101 is oriented in a substantially vertical direction (in FIGS. 1 and 2, the vertical upward direction is indicated by an arrow J and the vertical downward direction is provided). Is indicated by an arrow K.).

  The apparatus 11 includes a first sprocket 31 rotatably attached to a steel pipe 101 (having a cylindrical shape and subjected to rust prevention treatment) whose tip is embedded in the seabed, and the pipe 101. A second sprocket 33 rotatably attached to the first sprocket 31, a chain (roller chain) 35 stretched between the first sprocket 31 and the second sprocket 33, and a third sprocket engaged with the chain 35 41, a fourth sprocket 43 engaged with the chain 35, a fifth sprocket 51 engaged with the chain 35, a sixth sprocket 53 engaged with the chain 35, a third sprocket 41, a fourth sprocket 43, and a fourth sprocket 43. A moving frame 61 for fixing the fifth sprocket 51 and the sixth sprocket 53 at predetermined positions; A slide rail 71, 72, 73 for guiding slidably the direction, the float 23 floating near the water surface 103, a connecting rod 63 for connecting the float 23 and the moving frame 61, comprising comprises a.

The first sprocket 31 is attached to the pipe 101 so as to be rotatable around a rotation axis substantially perpendicular to the axis of the cylinder formed by the pipe 101. Specifically, the rotation shaft 32 of the first sprocket 31 is rotatably supported by a bearing provided inside the pipe 101. An output gear 37 is attached to the other end of the rotating shaft 32 opposite to the end to which the first sprocket 31 is attached (see FIG. 2).
Similarly, the second sprocket 33 is attached to the pipe 101 so as to be rotatable around a rotation axis substantially perpendicular to the axis of the cylinder formed by the pipe 101 (specifically, the rotation of the second sprocket 33). The shaft 34 is rotatably supported by a bearing provided inside the pipe 101.)
The rotation axis of the first sprocket 31 and the rotation axis of the second sprocket 33 substantially belong to the same plane.
Furthermore, the plurality of teeth formed on the outer periphery of the first sprocket 31 and the plurality of teeth formed on the outer periphery of the second sprocket 33 substantially belong to the same plane.
The chain 35 uses a roller chain here, and is engaged with a plurality of teeth formed on the outer periphery of the first sprocket 31 and a plurality of teeth formed on the outer periphery of the second sprocket 33. In this state.

The moving frame 61 has a shape in which steel rod-shaped members are arranged along each side of the rectangular parallelepiped and these rod-shaped members are connected at corner portions of the rectangular parallelepiped (not shown, but some Are assembled by bolts and nuts, and can be freely disassembled and assembled.) The pipe 101 is disposed so as to surround it (see in particular FIG. 3). .
On the other hand, slide rails 71, 72, and 73 are attached to the outer surface of the pipe 101 so that the longitudinal direction is substantially parallel to the axis of the cylinder formed by the pipe 101. The slide rails 71, 72, and 73 all have an elongated bar shape, and the cross-sectional shape perpendicular to the longitudinal direction has the same shape (substantially rectangular) at any position.
The moving frame 61 has a slide portion 65 that is slidable along the longitudinal direction of the slide rails 71, 72, and 73. The slide part 65 has a recess for loosely fitting the slide rails 71, 72, 73, and can slide freely along the longitudinal direction of the slide rails 71, 72, 73.
Therefore, the moving frame 61 can freely slide along the longitudinal direction of the slide rails 71, 72, 73 (that is, along the axis of the cylinder formed by the pipe 101). Although not shown here, both the pair of the third sprocket 41 and the fifth sprocket 51 and the pair of the fourth sprocket 43 and the sixth sprocket 53 do not engage with the chain 35. In order to prevent this (in order to keep at least one of the pairs engaged with the chain 35), the moving frame 61 is formed along the longitudinal direction of the slide rails 71, 72, 73 (that is, the pipe 101 is formed). A stopper is provided to limit the range that can be slid (along the axis of the cylinder).

Further, a third sprocket 41, a fourth sprocket 43, a fifth sprocket 51, and a sixth sprocket 53 are attached to the moving frame 61 so as to engage with the chain 35.
A third sprocket 41 and a fourth sprocket 43 are engaged with one portion 35a of both portions 35a and 35b connecting the first sprocket 31 and the second sprocket 33 of the chain 35. The fifth sprocket 51 and the sixth sprocket 53 are engaged with the other portion 35b of both the portions 35a and 35b of the chain 35. Here, the fourth sprocket 41, 43, 51, 53 from the outside of the chain 35 so that the third sprocket 41 and the fourth sprocket 43 and the fifth sprocket 51 and the sixth sprocket 53 sandwich the chain 35. Is engaged with the chain 35 (note that, as described above, the moving frame 61 slides along the longitudinal direction of the slide rails 71, 72, 73 (that is, along the axis of the cylinder formed by the pipe 101). Even so, at least one of the pair of the third sprocket 41 and the fifth sprocket 51 and the pair of the fourth sprocket 43 and the sixth sprocket 53 remains engaged with the chain 35. It is supposed to be.)
In addition, the third sprocket 41, the fourth sprocket 43, the fifth sprocket 51, and the sixth sprocket 53 all have a built-in clutch that can rotate freely on one side but cannot rotate on the other side. . Specifically, here, a sprocket similar to that located on the rear wheel side among the sprockets engaged with the drive chain of a general bicycle is used. And all of the 3rd sprocket 41, the 4th sprocket 43, the 5th sprocket 51, and the 6th sprocket 53 can rotate freely in the clockwise direction in FIG. 1 (arrow C direction in FIG. 1), It cannot rotate in the opposite direction (counterclockwise in FIG. 1).

  The float 23 has a cylindrical shape (here, it is a bottomed lid, but it may be a bottomed lid that is hollow or formed with a small specific gravity or the like). The connecting frame 63 is connected to the moving frame 61. The float 23 includes a connecting rod 63, a moving frame 61 (including a slide portion 65), a third sprocket 41, a fourth sprocket 43, a fifth sprocket 51, and a sixth sprocket 53 (hereinafter collectively referred to as an “accompanying portion”). .) Is formed so as to generate buoyancy that allows the float 23 itself to float near the water surface 103. Therefore, when the float 23 receives a wave, the float 23 moves up and down by the progress of the wave. By reciprocating, the accompanying part also reciprocates up and down.

Such an operation of the apparatus 11 will be briefly described.
When the mountain of waves on the water surface 103 approaches the device 11 installed on the sea as shown in FIGS. 1 to 3 and moves in the direction in which the float 23 rises (in the direction of arrow D in FIG. 1), the accompanying part also rises. The first sprocket 31, the second sprocket 33 and the chain 35 attached to the pipe 101 do not move, of course (in the direction of arrow D in FIG. 1). While the accompanying portion is rising, the fifth sprocket 51 and the sixth sprocket 53 do not transmit force to the chain 35 by freely rotating clockwise in FIG. 1 (in the direction of arrow C in FIG. 1). Since the 3 sprocket 41 and the fourth sprocket 43 cannot rotate counterclockwise in FIG. 1 (the reverse direction of the arrow C in FIG. 1), the third sprocket 41 and the fourth sprocket 43 are engaged. The one part 35a of the chain 35 is moved in the ascending direction (the direction of arrow D in FIG. 1). As a result, the chain 35 circulates in the direction of arrow F in FIG.

Next, when the wave crest on the water surface 103 moves away from the apparatus 11 and moves in the direction in which the float 23 descends (in the direction of arrow E in FIG. 1), the associated part also descends in the direction in which the associated part descends (in the direction of arrow E in FIG. 1). Moving. During the descending of the accompanying portion, the third sprocket 41 and the fourth sprocket 43 do not transmit force to the chain 35 by freely rotating clockwise in FIG. 1 (in the direction of arrow C in FIG. 1). Since the fifth sprocket 51 and the sixth sprocket 53 cannot rotate counterclockwise in FIG. 1 (the reverse direction of the arrow C in FIG. 1), the fifth sprocket 51 and the sixth sprocket 53 are engaged. The other portion 35b of the chain 35 is moved in the downward direction (in the direction of arrow E in FIG. 1). As a result, the chain 35 also circulates in the direction of arrow F in FIG.
In this way, the chain 35 is driven so as to go around in the direction of the arrow F in FIG. 1 regardless of whether the float 23 is raised or lowered.

The first sprocket 31 and the second sprocket 33 are driven and rotated in the direction of arrow G in FIG. The rotation shaft 32 is also driven in the same direction by the rotation of the first sprocket 31, thereby rotating the output gear 37.
Although not shown here, the rotation of the output gear 37 is configured to rotate the power generator, whereby the apparatus 11 can convert the energy of wave power into electric power and take it out.

As described above, the present apparatus 11 includes a main body (including the first sprocket 31, the second sprocket 33, and the chain 35) and the water surface 103 having the float 23 that floats near the water surface 103. A reciprocating motion part (floating 23, connecting rod 63, moving frame 61 (including slide part 65)), third sprocket 41, fourth sprocket 43, and fifth sprocket supported so as to be reciprocable with respect to the main body by a wave. 51 and the sixth sprocket 53.).
The main body includes a first sprocket 31 that is one-way engaging means rotatably attached to one direction of reciprocation (in the direction of arrow D in FIG. 1), and another direction of reciprocation (in FIG. 1, The second sprocket 33 as the other-direction engaging means, which is rotatably attached to the arrow E direction), and the first sprocket 31 as the one-way engaging means and the second sprocket 33 as the other-direction engaging means And a chain 35 that is a revolving member constituted by an endless belt that is stretched.
Further, the reciprocating part engages with one portion 35a of the chain 35 as a revolving member along the direction of reciprocating movement (in the direction of arrow D and arrow E in FIG. 1), so that the reciprocating part is reciprocated. A third sprocket 41 and a fourth sprocket that are first engaging portions that circulate the chain 35 that is a rotating member in one direction (the direction of arrow F in FIG. 1) when moving in the first direction (the direction of arrow D in FIG. 1). 43 and the other portion 35b of the chain 35, which is a revolving member along the direction of reciprocating motion (in the direction of arrows D and E in FIG. 1), the reciprocating portion is in the first direction ( In FIG. 1, a second chain 35 is turned around in one direction (arrow F direction in FIG. 1) when moving in a second direction (arrow E direction in FIG. 1) opposite to the arrow D direction in FIG. 1. The fifth sprocket 51 and the sixth sprocket that are engaging portions. It has a 53, a.

Here, the positions of the third sprocket 41 and the fourth sprocket 43, which are the first engaging portions, and the fifth sprocket 51 and the sixth sprocket 53, which are the second engaging portions, are fixed to each other by the moving frame 61. .
Further, here, the third sprocket 41 and the fourth sprocket 43 which are the first engaging portions and the fifth sprocket 51 and the sixth sprocket 53 which are the second engaging portions sandwich the chain 35 which is the rotating member.

Further, the first engaging portion (the third sprocket 41, the fourth sprocket 43) and the second engaging portion (the fifth sprocket 51, the sixth sprocket 53) are discs whose outer peripheral portions engage with the chain 35 which is a rotating member. Or a sprocket having a cylindrical shape, which is free to rotate in one direction (clockwise in FIG. 1 (direction of arrow C in FIG. 1)) and the other (counterclockwise in FIG. 1) around the central axis of the disk or cylinder (The direction opposite to the direction of arrow C in FIG. 1) is non-rotatable, and is attached in a direction in which the chain 35, which is a rotating member, circulates in one direction (the direction of arrow F in FIG. 1). is there.
Further, the first engaging portion (the third sprocket 41, the fourth sprocket 43) and the second engaging portion (the fifth sprocket 51, the sixth sprocket 53) are moved in the reciprocating direction (arrow D and arrow in FIG. 1). Two (plural) are arranged along the (E direction).

Further, although not shown here, a generator that is driven by the rotation of the chain 35 that is a rotating member (here, driven by an output gear 37 that is rotated by the rotation of the chain 35) is further provided. .
The main unit (including the first sprocket 31, the second sprocket 33, and the chain 35) is attached to the pipe 101, which is a rod-like member whose tip is embedded in the bottom of the water, and the apparatus 11 is installed. Yes.
In addition, although not doing here, you may make it attach the float 23 to the pipe 101 so that vertical reciprocation is possible. For example, by using a float formed in a donut shape (having a hole penetrating in the center, and may or may not have a bottom plate closing the lower surface), the pipe 101 is allowed to play in the hole in the donut shape. By fitting, the floating may be reciprocated up and down along the axis of the cylinder formed by the pipe 101. By attaching the float 23 to the pipe 101 so as to be capable of reciprocating up and down in this manner, the float can be reliably held and the apparatus 11 can be made to have a robust structure.

  FIG. 4 is a cross-sectional view showing another installation example of the apparatus 11. With reference to FIG. 4, another installation example of the apparatus 11 will be described. The apparatus 11 and the pipe 101 shown in FIG. 4 (the rod-like member with the tip embedded in the water bottom 105) are the same as those shown in FIGS. 1 to 3, and are shown in FIG. 1 to 3 is different from that shown in FIGS. 1 to 3 in that the axis of the cylinder formed by the pipe 101 is substantially vertical (in FIG. 4, the vertical upward direction is indicated by arrow J and the vertical downward direction is indicated by arrow K. It is only installed so that it may become diagonal with respect to. For this reason, the description of the present apparatus 11 and the pipe 101 is omitted (refer to the description of FIGS. 1 to 3 if necessary), and here, it is described that it is installed at a different angle.

FIG. 4 shows a vertical plane including a straight line along a reciprocating motion (reciprocating motion performed by the reciprocating motion portion with respect to the main body. Both directions of the reciprocating motion are indicated by arrows M and N in FIG. 4). The cross section by the plane which passes along the gravity center of the floating 23 is shown. In the cross section shown in FIG. 4, the direction in which the wave generated on the water surface 103 travels toward the float 23 is indicated by an arrow P, and the direction in which the float 23 rises in both directions of reciprocation (arrow M, arrow N). Is indicated by an arrow M. That is, the angle formed by the direction in which the wave travels toward the float 23 and the direction in which the float rises out of both directions of the reciprocating motion is indicated by the arrow P1 in FIG. 4 (the arrow P1 and the arrow P are parallel). And an arrow Q1 (an arrow M1 and an arrow M are parallel to each other).
Here, the angle Q is set to 50 degrees, and the angle Q is greater than 0 degrees and smaller than 90 degrees. Therefore, the progress of the wave helps the lift 23, so that power can be efficiently generated by the wave force. In addition, by installing the apparatus so that the reciprocating motion is inclined with respect to the vertical direction in this way, the device 11 absorbs the wave energy slowly for a long time, so that a large-scale foundation work is required. Therefore, it is possible to obtain a wave-dissipating effect at low cost. For this reason, it is possible to carry out wave extinguishing and sand beach curing without the need for a wave dyke.
As described above, the apparatus 11 shown in FIG. 4 is installed such that the reciprocating direction forms a predetermined angle with respect to the water surface.

  5 is a perspective view showing a float 201 according to another embodiment, FIG. 6 is an RR cross-sectional view of FIG. 5, and FIG. 7 is an SS cross-sectional view of FIG. With reference to FIG. 5 thru | or FIG. 7, the float 201 of other embodiment is demonstrated (The float 23 is replaced with the float 201 and the weight 301 compared with this apparatus 11 mentioned above, and others are described. The same.) Here, the float 201 and the weight 301 are attached to the connecting rod 63, and the accompanying portions (the connecting rod 63, the moving frame 61 (including the slide portion 65), which are described above by the upper and lower sides of the float 201 and the weight 301, The third sprocket 41, the fourth sprocket 43, the fifth sprocket 51, and the sixth sprocket 53) are also moved up and down. In addition, the float 201 is formed so as to generate buoyancy that can float near the water surface 103 even when the accompanying part and the weight 301 are carried. By reciprocating up and down (here, reciprocating vertically in the vertical direction) as the wave travels, the associated portion and the weight 301 reciprocate up and down (here reciprocating vertically and vertically).

  The float 201 has a cylindrical portion 201a having a right cylindrical shape, and a right cone (inside is hollow) conical portion 201b attached to the lower end of the cylindrical portion 201a. 5 to 7, the vertically upward direction is indicated by an arrow J, and the vertically downward direction is indicated by an arrow K. The right cylinder and the right cone have the same radius, and the axis of the right cylinder and the axis of the right cone are on the same straight line (here, a straight line oriented in the vertical direction). Has been. Further, the right cone formed by the conical portion 201b is arranged to taper downward. Here, the cylindrical portion 201a and the conical portion 201b are formed by separately integrating steel members (for example, stainless steel) formed by welding, and constitute a bottomed, uncovered and hollow vessel.

The float 201 further has a partition plate 201c. Here, the partition plate 201c is formed in a disc shape (both main surfaces are substantially circular plate shapes) from a steel material (for example, stainless steel), and is attached to the inner surface of the cylindrical portion 201a. A straight cylinder in which both main surfaces of the partition plate 201c are substantially perpendicular to an axis of a right cylinder formed by the cylindrical portion 201a, and a substantially circular center formed by both main surfaces of the partition plate 201c is formed by the cylindrical portion 201a. The partition plate 201c is attached to the inner surface of the cylindrical portion 201a so as to exist on the axis. The outer peripheral edge of the partition plate 201c is continuously welded and attached to the inner peripheral surface of the cylindrical portion 201a, whereby the space 203 surrounded by the partition plate 201c, the cylindrical portion 201a, and the conical portion 201b is kept airtight. (The space 203 is a sealed space.)
A discharge port 205 is formed in the cylindrical portion 201a immediately above the partition plate 201c.
Further, a wave receiving plate 207 is attached to the upper portion of the cylindrical portion 201a so as to protrude from the outer surface of the cylindrical portion 201a and go around the outer periphery of the cylindrical portion 201a.

The weight 301 includes a cylindrical portion 301a having a right cylindrical shape, and a right cone (inside is hollow) shaped cone portion 301b attached to the lower end of the cylindrical portion 301a. The right cylinder and the right cone have the same radius, and the axis of the right cylinder and the axis of the right cone are on the same straight line (here, a straight line oriented in the vertical direction). Has been. Further, the right cone formed by the cone portion 301b is arranged to taper downward. Here, the cylindrical portion 301a and the conical portion 301b are separately formed by welding together steel members (for example, stainless steel), thereby forming a bottomed, uncovered and hollow vessel.
A weight discharge port 305 is formed in the upper portion of the cylindrical portion 301a.
Further, water 309 is stored below the weight outlet 305 in the weight 301.

When such a float 201 is used, when the wave of the water surface 103 (in FIG. 5 to FIG. 7, the calm water surface when there is no wave is shown as the water surface 103) becomes rough to some extent (the height of the wave). Water (not shown, the same applies hereinafter) enters from the water inlet 211 (the upper end opening of the cylindrical portion 201a is formed), and the water received from the water inlet 211 is stored. Stored in the portion 204 (a portion surrounded by the cylindrical portion 201a and the partition plate 201c). For this reason, the float 201 becomes heavier by the weight of the water stored in the reservoir 204 (the buoyancy of the float decreases), thereby lowering the position of the float 201 and damaging the float itself and other parts of the apparatus. Or the problem of shortening the service life can be prevented or reduced. In addition, when the wave of the water surface 103 becomes rough to some extent, it becomes necessary to prevent or reduce the problem of lowering the position of the float 201 and damaging the float itself or other parts of the apparatus or shortening the life. The water inlet 211 is formed at a position and shape that allows water to enter from the water inlet 211.
In addition, since the water received from the water inlet 211 and stored in the storage unit 204 is discharged from the discharge port 205, when the wave returns to a normal state (when the wave height becomes low), the water is stored in the storage unit 204. And the position of the float 201 can be returned to the original position. The discharge port 205 has a predetermined amount or more of water (the wave becomes rough (the wave height becomes high), and the float 201 is greatly displaced in the upward direction (that is, the float 201 is pushed up). Reservoir 204 has received water greater than the amount of water that can be received from the water inlet 211 at the assumed minimum wave roughness (wave height), which can cause problems such as damage to other parts or shortened lifespan. Sometimes the water received in the storage unit 204 is stored for one or more cycles of the wave, and the amount of water in the storage unit 204 does not increase even if there is the maximum rainfall expected in the place where the float 201 is arranged. It is configured to drain water.

Similarly, when such a weight 301 is used, a wave on the water surface 103 (in FIG. 5 to FIG. 7, a calm water surface when there is no wave is shown as the water surface 103) becomes rough to some extent (wave When the height of the water becomes higher than a certain level), water enters from the weight water inlet 311 (the upper end opening of the cylindrical portion 301a is formed), and the water received from the weight water inlet 311 receives the weight reservoir 304 ( It is stored in the inside of the weight 301 in a portion where the water 309 is not filled. For this reason, the weight 301 becomes heavier by the weight of the water stored in the weight storage unit 304, thereby lowering the position of the float 201 and preventing the problem that the float itself and other parts of the apparatus are damaged or the life is shortened. Or it can be reduced. In addition, when the wave of the water surface 103 becomes rough to some extent, it becomes necessary to prevent or reduce the problem of lowering the position of the float 201 and damaging the float itself or other parts of the apparatus or shortening the life. The weight water inlet 311 is formed in such a position and shape that water can enter from the weight water inlet 311.
Since the water received from the weight water inlet 311 and stored in the weight reservoir 304 is discharged from the weight outlet 305, the weight is stored when the wave returns to the normal state (when the wave height is lowered). Water can be discharged from the part 304 and the position of the float 201 can be returned to the original position. The weight discharge port 305 has a predetermined amount or more of water (the wave becomes rough (the wave height becomes high), and the float 201 is greatly displaced in the upward direction (that is, the float 201 is pushed up). In other words, water exceeding the amount of water that can be received from the weight entry port 311 at the assumed minimum wave roughness (wave height), which may cause problems such as damage to other parts or shortened lifespan, is stored in the weight storage unit 304. The amount of water stored in the weight storage unit 304 so that the water stored in the weight storage unit 304 is stored for one or more cycles of the wave when received and even if there is a maximum amount of rainfall assumed at the place where the weight 301 is disposed. It is designed to drain water so that it does not increase.

As described above, here, when the float 201 floats in the vicinity of the calm water surface 103, the upper protrusion 213 that exists above the water surface 103, the water inlet 211 formed in the upper protrusion 213, the water And a storage unit 204 that stores water received from the entrance 211.
And at least one part of the storage part 204 exists above the calm water surface 103 (of course, below the water inlet 211) (here, as shown in FIG. All are above the calm water surface 103 (of course, below the water inlet 211).) The float 201 has a discharge port 205 that communicates from the reservoir 204 to the outside 401 and discharges water. . In addition, as described above, when a predetermined amount or more of water (of course, water having an inner volume or less of the storage unit 204) is received by the storage unit 204, the water received by the storage unit 204 is one cycle or more of the wave. Water is discharged from the outlet 205 so as to be stored. In addition, water is discharged from the discharge port 205 so that the amount of water in the storage unit 204 does not increase even when there is a maximum amount of rainfall assumed in the place where the float 201 is disposed.
Moreover, it has the wave receiving plate 207 formed in this outer surface below the water inlet 211 (of course above the calm water surface 103) so that it may protrude from the outer surface of the upper protrusion part 213.

When the water surface 103 is lowered to the water surface 103a by the wave from the state of FIGS. 5 and 7, a part 302 of the weight 301 is exposed (the water surface is lowered first, and then the weight 301 is lowered). That is, the weight 301 having a portion 315 located under the calm water surface 103 and entering the water and having at least a portion 302 exposed in the process of the water surface 103 being lowered by the wave is directly or directly on the float 201. It is attached indirectly (here, indirectly via the connecting rod 63).
Further, the exposed at least part 302 includes a part constituted by water 309 (here, a part of the exposed at least part 302 filled with water 309).

The weight 301 is received from the weight upper protrusion 317 existing above the assumed calm water surface 103, the weight water inlet 311 formed in the weight upper protrusion 317, and the weight water inlet 311. A weight storage unit 304 for storing water.
Furthermore, at least a part of the weight storage unit 304 exists above the assumed calm water surface 103 (of course, below the weight water inlet 311) (here, all of the weight storage unit 304). Is located above the assumed calm water surface 103 (of course, below the weight water inlet 311).) The weight 301 communicates from the weight reservoir 304 to the outside 401 to discharge water. And a weight discharge port 305.
Then, as described above, when a predetermined amount or more of water (of course, water below the internal volume of the weight storage unit 304) is received by the weight storage unit 304, the water received by the weight storage unit 304 is a wave. Water is discharged from the weight outlet 305 so as to be stored for one period or more. Furthermore, water is discharged from the weight discharge port 305 so that the amount of water in the weight storage unit 304 does not increase even if there is a maximum amount of rainfall assumed in the place where the weight 301 is disposed.
Although not so done here, the weight wave receiving plate formed on the outer surface below the weight water inlet 311 (of course, above the calm water surface 103) so as to protrude from the outer surface of the weight upper protrusion 317. (The structure, shape, and the like may be the same as those of the wave receiving plate 207).
Here, the lower surface of the float 201 and the weight 301 has a tapered shape toward the lower side (specifically, each of the conical portion 201b and the conical portion 301b has a conical shape with the apex downward). ing.
In this case, the floats 201 and the weights 301 are attached to the connecting rod 63 one by one. However, it is needless to say that the number of the floats 201 and the weights 301 may be appropriately changed.

Further, FIG. 8 is a plan view showing another installation state of the present apparatus 11 (which has a float 201 and a weight 301 instead of the float 23) (viewed from above vertically with respect to the water surface 103c). Is shown.) With reference to FIG. 8, another installation state of the apparatus 11 will be described. Here, a main body (including the first sprocket 31, the second sprocket 33, and the chain 35) is attached to the floating support 501.
Specifically, the floating support 501 has a plurality of rod-like members 503a, 503b, 503c, 503d, and 503e (rod-like members 503a, 503b, 503c, and 503d) that are arranged substantially parallel to each other in the longitudinal direction and float near the water surface 103c. , 503e have the same length (indicated by L in FIG. 8, where L = about 100 m), and the rod-like members 503a, 503b, 503c, 503d, 503e are arranged so as to substantially belong to one plane. And a plurality of bar members 503a, 503b, 503c, 503d, and 503e, which are connected to each other. Each of the plurality of rod-like members 503a, 503b, 503c, 503d, and 503e and the connecting rod members 505a and 505b are configured by straight hollow steel pipes that are closed at both ends, and are fixed at positions intersecting each other. ing. The floating support 501 is configured to generate sufficient buoyancy so that it can float near the water surface 103c even when the apparatus 11 is carried.

The lower end of the pipe 101 (straight steel pipe) is fixed to the rod-like member 503c by welding. The pipe 101 is disposed so that the axis of the cylinder formed by the pipe 101 is oriented in a substantially vertical direction (that is, substantially perpendicular to the water surface 103c). The apparatus 11 is attached to the pipe 101 as described with reference to FIGS. The float 201 and the weight 301 are reciprocated up and down along a substantially vertical direction between a plurality of rod-shaped members (specifically, between the rod-shaped member 503c and the rod-shaped member 503d here). It has become.
Here, the floating support is performed so that the wave traveling direction of the water surface 103c (indicated by an arrow W in FIG. 8) is substantially parallel to the longitudinal direction of the plurality of rod-shaped members 503a, 503b, 503c, 503d, and 503e. The object 501 is disposed (not shown, but the floating support 501 is chained with a certain amount of margin to a rock on the bottom of the water).

As described above, in FIG. 8, the apparatus 11 has the main body attached to the floating support 501 that floats near the water surface 103 c and has a displacement different from the displacement of the float 201 due to the waves.
The floating support 501 includes a plurality of rod-like members 503a, 503b, 503c, 503d, and 503e that are arranged substantially parallel to each other in the longitudinal direction and float in the vicinity of the water surface 103c, and the float 201 is a plurality of rod-like members. It reciprocates between 503a, 503b, 503c, 503d, and 503e (here, between the rod-shaped member 503c and the rod-shaped member 503d).
In addition, the longitudinal direction of the plurality of rod-like members 503a, 503b, 503c, 503d, and 503e is substantially parallel to the wave traveling direction (arrow W in FIG. 8).
Further, the dimension of the floating support 501 along the wave traveling direction (arrow W in FIG. 8) (here, the length L of the rod-like members 503a, 503b, 503c, 503d, and 503e (here, L = about 100 m)) However, there is no particular upper limit on the size of the floating support 501 along the wave traveling direction (arrow W in FIG. 8), which is the same as or larger than the wave wavelength (here, about 99 m). However, if it becomes too large, the construction cost may increase or the strength may be insufficient. Therefore, it is preferable to set the limit. For example, it is set to 10 times or less of the wave wavelength, or 5 times the wave wavelength. Or may be less than or equal to three times the wave wavelength).

It is a front view which shows the power generation device (this apparatus) by the wave force of this invention of one Embodiment. It is a left view of this apparatus. It is a top view of this apparatus. It is sectional drawing which shows the other example of installation of this apparatus. It is a perspective view which shows the float of other embodiment. It is RR sectional drawing of FIG. It is SS sectional drawing of FIG. It is a top view which shows another installation state of this apparatus.

Explanation of symbols

11 Device 23 Floating 31 First Sprocket 32 Rotating Shaft 33 Second Sprocket 34 Rotating Shaft 35 Chain 35a One Part 35b Other Part 37 Output Gear 41 Third Sprocket 43 Fourth Sprocket 51 Fifth Sprocket 53 Sixth Sprocket 61 Moving Frame 63 Connecting rod 65 Slide portion 71, 72, 73 Slide rail 101 Pipe 103, 103a, 103c Water surface 105 Water bottom 201 Floating 201a Cylindrical portion 201b Conical portion 201c Partition plate 203 Space 204 Storage portion 205 Discharge port 207 Wave receiving plate 211 Water inlet 213 Upper protrusion 301 Weight 301a Cylindrical part 301b Conical part 302 Part 304 Weight storage part 305 Weight discharge port 309 Water 311 Weight water inlet 315 Part that infiltrates in water 17 weight upper protrusion 401 outside 501 floating supporting structure 503a, 503b, 503c, 503d, 503e rod-like member 505a, 505b connecting rod

Claims (25)

The main body,
A reciprocating motion part supported so as to be capable of reciprocating with respect to the main body by a wave of the water surface having a float floating near the water surface;
With
The main body is
One-way engagement means rotatably attached to one direction side of the reciprocating motion;
Another direction engagement means rotatably attached to the other direction side of the reciprocating motion;
A circling member constituted by an endless belt stretched between the one-way engaging means and the other-direction engaging means so as to be capable of circling;
Have
The reciprocating part is
By engaging with one part of the revolving member along the reciprocating direction, the reciprocating part is revolved in one direction when the reciprocating part moves in the first direction. An engaging portion;
Engaging with the other part of the orbiting member along the direction of the reciprocating motion, the encircling member when the reciprocating motion portion moves in a second direction opposite to the first direction of the reciprocating motion. A second engaging portion that circulates in one direction,
have,
Power generator by wave force.     The power generation device using wave force according to claim 1, wherein the positions of the first engagement portion and the second engagement portion are fixed to each other.     Either the first engaging portion and the second engaging portion sandwich the rotating member, or the first engaging portion and the second engaging portion are sandwiched by the rotating member. The power generation device by wave force according to claim 2, wherein     The first engaging portion and the second engaging portion have a disk or cylindrical shape whose outer peripheral portion engages with the rotating member, and can freely rotate in one direction around the central axis of the disk or cylinder. 4. The power generation device using wave force according to claim 1, wherein the power generation device is provided in a direction in which the rotating member is not rotatable on the other side and is rotated in the one direction. 5.     5. The power generation apparatus using wave force according to claim 1, wherein a plurality of the first engagement portions and the second engagement portions are disposed along the reciprocating motion direction.     The power generation apparatus using wave force according to any one of claims 1 to 5, further comprising a power generator driven by the rotation of the rotating member.     When the float floats in the vicinity of a calm water surface, an upper protrusion that exists above the water surface, a water inlet formed in the upper protrusion, and water received from the water inlet are stored. A power generation apparatus using wave force according to any one of claims 1 to 6, comprising a storage section. At least a portion of the reservoir is above the calm water surface,
The power generation apparatus by wave force according to claim 7, wherein the float has a discharge port that communicates with the outside from the storage portion and discharges water.     The water is discharged from the discharge port so that the water received in the storage unit is stored for one cycle or more of a wave when a predetermined amount or more of water is received in the storage unit. Power generation device using the wave power of.     10. The water according to claim 8, wherein water is discharged from the discharge port so that the amount of water in the reservoir does not increase even when there is a maximum amount of rainfall assumed in a place where the float is disposed. Power generation device using the wave power of.     The power generation device using wave force according to any one of claims 7 to 10, further comprising a wave receiving plate formed on the outer surface below the water inlet so as to protrude from the outer surface of the upper protrusion.     A part located under a calm water surface and infiltrated into the water, the weight having at least a part exposed in the process of the water surface descending by a wave, is attached directly or indirectly to the float A power generation apparatus using wave power according to any one of claims 1 to 11.     The power generation apparatus by wave force according to claim 12, wherein at least a part of the exposed part includes a part constituted by water.     A weight upper protrusion that is above the assumed calm water surface, a weight water inlet formed in the weight upper protrusion, and a weight that stores water received from the weight water inlet. A power generation apparatus using wave force according to claim 12 or 13, comprising a storage section. At least a portion of the weight reservoir is above the assumed calm water surface,
The power generation apparatus by wave force according to claim 14, wherein the weight has a weight discharge port that communicates to the outside from the weight storage portion and discharges water.     The water is discharged from the weight discharge port so that the water received in the weight storage part is stored for one or more cycles of the wave when a predetermined amount or more of water is received in the weight storage part. 15. A power generation apparatus using wave force according to 15.     The water is discharged from the weight discharge port so that the amount of water in the weight storage portion does not increase even if there is a maximum amount of rainfall assumed in the place where the weight is disposed. The power generation device by the wave force described in 1.     The power by the wave force according to any one of claims 14 to 17, further comprising a weight wave receiving plate formed on the outer surface below the weight launching inlet so as to protrude from an outer surface of the weight upper protrusion. Generator.     The power generation apparatus by wave force according to any one of claims 1 to 18, wherein a lower surface of the float or the weight has a shape that tapers downward.     The power generation device by wave force according to any one of claims 1 to 19, wherein the main body is attached to a rod-like member having a tip embedded in a water bottom.     The power generation device by wave force according to any one of claims 1 to 19, wherein the main body is attached to a floating support that floats near a water surface and has a displacement different from the displacement of the float due to waves. The floating support includes a plurality of rod-shaped members that are arranged substantially parallel to each other in the longitudinal direction and float near the water surface,
The power generation apparatus by wave force according to claim 21, wherein the float is reciprocated between the plurality of rod-shaped members.     23. The power generation apparatus using wave force according to claim 22, wherein the longitudinal direction of the plurality of rod-shaped members is substantially parallel to a wave traveling direction.     24. The power generation apparatus using wave force according to any one of claims 21 to 23, wherein a size of the floating support along a wave traveling direction is equal to or larger than a wave wavelength.     The power generation device using wave force according to any one of claims 1 to 24, wherein the reciprocating motion is installed so as to form a predetermined angle with respect to the water surface.

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