JP6051498B1 - Power generation system - Google Patents

Abstract

A power generation system using a water flow force with less structural restrictions is provided. A downstream assembly of a power generation system includes two left and right reciprocating bodies each connected with a plurality of blades. The plurality of blades are arranged at an angle of 90 degrees with respect to the water flow, receive a force of the water flow, drive the reciprocating body of the downstream assembly 13 to the downstream side, and move these blades in the direction along the water flow. It can be switched between a non-driven state where it is arranged and pulled upstream without receiving the force of the water flow. The phase of the reciprocating motion of the two left and right reciprocating bodies is shifted by a half cycle. The reciprocating motion of the reciprocating body is converted into a circulating motion that circulates along an elongated circulation path by a crank disposed in the central assembly 12, and further converted into a rotational motion. The rotational motion force is transmitted to the rotating shaft of the coil of the power generator disposed in the central assembly 12. As a result, power generation is performed by the power generation device. [Selection] Figure 1

Description

  The present invention relates to hydroelectric power generation.

  Sustainable energy development is required. Electricity obtained by hydroelectric power generation, which generates electricity by the power of rivers and ocean waters, is attracting attention as one of the sustainable energy sources.

  As a technique relating to water current power generation, for example, there is Patent Document 1 relating to an invention made by the present inventor. The flowing water power generation apparatus according to the invention described in Patent Document 1 pulls a large floating structure with the force of ocean current or tidal current, and changes its energy into electricity. This device is equipped with a blocking plate whose angle with respect to the water flow is increased so that the water flow resistance increases when moving to the upstream side of the water flow, and the water flow resistance decreases when moving downstream, and the water flow resistance is large. The rotating shaft of the coil of the power generator arranged in the levitation body is driven by the reaction force of the water flow resistance generated in the blocking plate.

Japanese Patent No. 5105652

  In the invention described in Patent Document 1, a drive in which each of a pair of reciprocating bodies arranged on the left and right and in the center of the direction of water flow is connected to an end portion on a circumferential surface of a rotating disk whose axis is a vertical direction. A belt is hung, and the drive belt pulls up the other reciprocating body in the upstream direction as the reciprocating body, either left or right or center, moves in the downstream direction. As these reciprocating bodies move, a crank connected to the central reciprocating body rotates the rotating disk. And the rotational force of a turntable rotates the rotating shaft of the coil of a power generator via a gearwheel.

  Since the water current generator according to the invention described in Patent Document 1 has the above-described structure, there are many structural restrictions. For example, the position of the power generation device is limited near the center of the turntable. Moreover, a rotating disk with a large diameter is required. In addition, a complicated power transmission mechanism is required to transmit the rotation of the large diameter rotating disk to the rotating shaft of the coil of the power generator. Moreover, the number of reciprocating bodies cannot be increased.

  The present invention provides a power generation system that has fewer structural restrictions than the water current power generation apparatus according to the invention described in Patent Document 1, and that can output higher power with the same amount of steel.

The present invention
A floating body moored at the bottom of the water,
A plurality of reciprocating bodies coupled to the floating body so as to be capable of reciprocating along the direction of the flow of water;
A plurality of resistors coupled to each of the plurality of reciprocating bodies to generate a water flow resistance;
A driving state in which each of the plurality of reciprocating bodies provided in each of the plurality of reciprocating bodies and connected to the reciprocating body generates a large water flow resistance by at least one of an angle change and a shape change with respect to the water flow; A plurality of switching mechanisms that switch between non-driven states that generate a small water flow resistance,
The plurality of switching mechanisms include one or more connected to other reciprocating bodies while driving one or more of the resistors connected to some of the reciprocating bodies among the plurality of reciprocating bodies. The resistor is in a non-driven state,
The reciprocating motion of the reciprocating body connected to each of the plurality of reciprocating bodies is a straight forward path from the upstream side to the downstream side of the water flow, and a straight return path path from the downstream side to the upstream side of the water flow. A curved downstream return path from the forward path to the return path, and a curved upstream return path from the return path to the forward path, and a plurality of changes to a circular motion along the circulation path The crank,
A power generation device disposed on the floating body;
A power generation system comprising: a power transmission mechanism that transmits a driving force generated by circulation motion generated by the plurality of cranks to a rotating shaft of a coil of the power generation device is proposed as a first aspect.

In the first aspect described above,
The positional relationship in the direction of water flow between the plurality of reciprocating bodies is such that the position of a connection point that moves on the circulation path of the crank connected to one or more reciprocating bodies is within the upstream return path or the A configuration in which the position of a connection point that moves on the circulation path of the crank connected to one or more other reciprocating bodies is adjusted so as to be in the forward path while in the downstream return path. May be employed as the second aspect.

In the first or second aspect described above,
With respect to each of the plurality of reciprocating bodies, when the position of a connecting point that moves on the circulation path of the crank connected to the reciprocating body is in the upstream return path or the downstream return path, the connection is established. A configuration in which a resistance is given to the reciprocating moving body so that the moving speed of the point is equal to or less than a predetermined threshold and an electric brake that generates electric power by a force generated by a reaction of the resistance is provided as a third aspect. Also good.

In any one of the first to third aspects described above,
One or more of the resistors connected to one or more reciprocating bodies of the plurality of reciprocating bodies are either a rope, a chain, or a bar, or a rope, a chain, and a rod on the downstream side of the water flow with respect to the reciprocating body. A configuration in which two or more combinations selected from rods are used may be employed as the fourth aspect.

  According to the first aspect described above, the reciprocating motion of the reciprocating moving body is transferred to the rotating shaft of the coil of the power generator after being changed to the circulating motion that moves on the circulation path elongated in the direction of the water flow. Therefore, for example, a flexible configuration is possible, for example, a driving force by a large number of reciprocating bodies is concentrated on one shaft.

  According to the second aspect described above, when the connecting point of the crank moving on the circulation path is switched to the original moving direction by another crank when the moving direction is switched, the connecting point is the top dead center. Or the problem of moving in the reverse direction on the circulation path without exceeding the bottom dead center is avoided.

  According to the third aspect described above, it is possible to prevent an excessive load from being applied to the connecting point of the crank that moves on the upstream folding path or the downstream folding path with a high curvature, and it is lost due to the deceleration of the connecting point. Kinetic energy is recovered as electric power.

  According to the fourth aspect described above, the power generation system is generally realized at a low weight and at a low cost as compared with the case where the resistor is connected to the reciprocating body only by a rigid member such as a frame. High durability against changes in direction is realized.

The top view of the electric power generation system concerning one Embodiment. FIG. 3 is a top view of the upstream assembly according to one embodiment. The right view of the upstream assembly concerning one Embodiment. FIG. 3 is a top view of a central assembly according to one embodiment. The right view of the center assembly concerning one Embodiment. The figure for demonstrating the structure of the subcrank assembly concerning one Embodiment. The figure for demonstrating the structure of the subcrank assembly concerning one Embodiment. The figure for demonstrating the structure of the subcrank assembly concerning one Embodiment. The figure for demonstrating the structure of the subcrank assembly concerning one Embodiment. The figure which showed a mode that a circulation belt circulated with the reciprocating motion of the downstream assembly concerning one Embodiment. The figure which showed a mode that a circulation belt circulated with the reciprocating motion of the downstream assembly concerning one Embodiment. The figure which showed a mode that a circulation belt circulated with the reciprocating motion of the downstream assembly concerning one Embodiment. The figure which showed a mode that a circulation belt circulated with the reciprocating motion of the downstream assembly concerning one Embodiment. The figure which showed a mode that a circulation belt circulated with the reciprocating motion of the downstream assembly concerning one Embodiment. The figure which showed a mode that a circulation belt circulated with the reciprocating motion of the downstream assembly concerning one Embodiment. The figure which showed the circulation path | route of the connection point of the crank and circulation belt concerning one Embodiment. The top view of the downstream assembly concerning one Embodiment. The right view of the downstream assembly concerning one Embodiment. The figure which showed a mode that the shape of the resistor concerning one Embodiment and the said resistor were hold | maintained. The figure which showed the upstream rope drive unit concerning one Embodiment. The figure which showed the downstream rope drive unit concerning one Embodiment. The figure which showed the structure which rotationally drives the resistor concerning one Embodiment around an axial rod. The figure which showed a mode that the resistor concerning one Embodiment switches between a drive state and a non-drive state. The figure which showed a mode that the resistor concerning one Embodiment switches between a drive state and a non-drive state. The figure which showed a mode that the resistor concerning one Embodiment switches between a drive state and a non-drive state. The figure which illustrated arrangement | positioning of the braking roller of the electric brake with which the electric power generation system concerning one Embodiment is provided. The top view of the electric power generation system concerning one modification. The figure which showed the relationship of the position on the circulation path of the connection point in the some drive unit of the electric power generation system concerning one modification. The figure which showed the relationship of the position on the circulation path of the connection point in the some drive unit of the electric power generation system concerning one modification. The figure which showed the relationship of the position on the circulation path of the connection point in the some drive unit of the electric power generation system concerning one modification. The figure which showed the relationship of the position on the circulation path of the connection point in the some drive unit of the electric power generation system concerning one modification. The top view of the electric power generation system concerning one modification. The top view of the auxiliary drive unit concerning one modification. The right view of the auxiliary drive unit concerning one modification. The figure which showed a mode that the flame | frame concerning one modification hold | maintains the resistor of an auxiliary drive unit. The figure which showed the relationship of the position on the circulation path of the connection point in the drive unit which the electric power generation system concerning one modification has. The figure which showed the relationship of the position on the circulation path of the connection point in the drive unit which the electric power generation system concerning one modification has. The figure which showed the relationship of the position on the circulation path of the connection point in the drive unit which the electric power generation system concerning one modification has. The figure which showed the relationship of the position on the circulation path of the connection point in the drive unit which the electric power generation system concerning one modification has.

[Embodiment]
Hereinafter, a power generation system 1 according to an embodiment of the present invention will be described. FIG. 1 is a top view of the power generation system 1. The power generation system 1 is a system that is installed, for example, in a sea area where the flow velocity is constantly high, and generates power by the force of the ocean current. The power generation system 1 is divided into an upstream assembly 11, a central assembly 12, and a downstream assembly 13.

  FIG. 2A is a top view of the upstream assembly 11, and FIG. 2B is a right side view of the upstream assembly 11. In addition, in this application, when the direction used as a reference | standard is not specified, the right means the right when it goes to the downstream from the upstream of a water flow. Moreover, in this application, when the direction used as a reference | standard is not specified, the left means the left when it goes to the upstream from the downstream of a water flow.

  The upstream assembly 11 includes an upstream floating body 111 that is a flat cylindrical floating body that floats on the water surface W, a plurality of anchors 112 fixed to the seabed G, and each of the upstream floating body 111 and the plurality of anchors 112. A plurality of ropes 113 to be connected and a connecting plate 114 connected to the upstream floating body 111 are provided. The rope 113 is, for example, a wire rope. The anchor 112 and the rope 113 anchor the upstream floating body 111 and the central assembly 12 and the downstream assembly 13 connected to the upstream floating body 111 at the bottom of the water, and remain in substantially the same place.

  The connecting plate 114 is connected to the upstream floating body 111 on the upstream side, and connected to the central assembly 12 on the downstream side. On the upstream side, the connecting plate 114 is connected to the upstream floating body 111 so as to be movable along the circumference of the upstream floating body 111. In FIG. 2B, a portion indicated by a broken line is a disk-shaped member that forms a part of the connecting plate 114 disposed on the bottom surface side of the upstream floating body 111, and the rotation with respect to the upstream floating body 111 about the vertical direction is performed. It is connected to the upstream floating body 111 in a possible state.

  As described above, the central assembly 12 is rotatable relative to the upstream assembly 11 via the coupling plate 114 as shown by the double-headed arrow in FIG. The assembly 13 can move in response to changes in the direction of water flow. Therefore, unnecessary force is not applied to the central assembly 12 and the downstream assembly 13.

  3A is a top view of the central assembly 12 and FIG. 3B is a right side view of the central assembly 12. The central assembly 12 includes a flat central floating body 121 that floats on the water surface W in a state of being connected to the upstream assembly 11 via a connection plate 114, a power generator 122 that generates electric power by a coil that rotates in a magnetic field, and a downstream side. Crank assembly 123R and crank assembly 123L that change the force of reciprocating motion in the water flow direction of assembly 13 into circulation motion along the elongated circulation path, and rotating circulation motion along the elongated circulation path generated by crank assembly 123R and crank assembly 123L A mission assembly 124 that transmits to the power generation device 122 instead of motion, and an auxiliary motor 125 that applies a force for assisting circulation motion to the crank assembly 123R and the crank assembly 123L via the mission assembly 124 are provided.

  Hereinafter, when the crank assembly 123R and the crank assembly 123L are not distinguished from each other, they are collectively referred to as the crank assembly 123. In the following description, when “L” or “R” is added to the end of the reference numerals of the constituent parts, they mean constituent parts arranged on the left side or the right side of two identical left and right constituent parts. . In the case where the same pair of left and right two identical components are not distinguished, a code without “L” and “R” is used.

  The power generator 122, the crank assembly 123, the transmission assembly 124, and the auxiliary motor 125 are disposed on the central floating body 121, and are covered with walls and a roof indicated by broken lines in FIGS. 3A and 3B. Therefore, the power generator 122, the crank assembly 123, the transmission assembly 124, and the auxiliary motor 125 are not exposed to wind and rain on the water.

  The crank assembly 123R includes a sub-crank assembly 1231RR and a sub-crank assembly 1231RL. The crank assembly 123L includes a sub-crank assembly 1231LR and a sub-crank assembly 1231LL. These sub-crank assemblies have the same configuration and are hereinafter referred to as sub-crank assemblies 1231.

  4A, 4B, 4C, and 4D are views for explaining the structure of the sub-crank assembly 1231. FIG. 4A, 4B, and 4C, the upper left view is a top view of the sub-crank assembly 1231, the upper right view is a view of the sub-crank assembly 1231 in the direction of arrow X shown in the top view, and the lower left view is a top view. It is the figure which looked at the sub crank assembly 1231 in the direction of arrow Y shown in the figure.

  As shown in FIG. 4A, the sub crank assembly 1231 includes a stand 12311R and a stand 12311L. A roller 12312R is attached to the upstream side of the stand 12311R. The roller 12312R has a shaft that penetrates the flow in the left-right direction and rotates freely, and two left and right roller pads that are attached to the shaft with the stand 12311R interposed therebetween.

  A roller group 12313R including four rollers is attached on the downstream side of the roller 12312R of the stand 12311R. The four rollers included in the roller group 12313R are arranged side by side on a straight line in the direction of water flow. Each of the four rollers included in the roller group 12313R has a shaft that protrudes leftward from the stand 12311R and rotates freely, and a roller pad attached to the shaft.

  A roller 12312L and a roller group 12313L corresponding to the roller 12312R and the roller group 12313R of the stand 12311R are attached to the stand 12311L. However, the roller group 12313L is attached to the right side of the stand 12311L.

  As shown in FIG. 4B, a circulation belt 12314R is attached to the roller 12312R and the roller group 12313R. A connecting portion 12315R that is rotatably connected to an upstream connecting portion of a crank 12316 (described later) is attached to the left side surface of the circulation belt 12314R. A circulation belt 12314L is attached to the roller 12312L and the roller group 12313L. On the right side surface of the circulation belt 12314L, a connecting portion 12315L that is rotatably connected to an upstream connecting portion of a crank 12316 (described later) is attached.

  As shown in FIG. 4C, the upstream connection portion of the crank 12316 is attached to the connection portion 12315R and the connection portion 12315L. As described above, the crank 12316 and the connecting portion 12315R, and the crank 12316 and the connecting portion 12315L are rotatably connected. Therefore, the upstream side connecting portion of the crank 12316 can move in the vertical direction along the circulation movement path of the circulation belt 12314R and the circulation belt 12314L.

  The upstream connection portion of the connection arm 12317 is rotatably connected to the downstream connection portion of the crank 12316. The connecting arm 12317 is connected to the downstream assembly 13 on the downstream side, and reciprocates as the downstream assembly 13 reciprocates along the direction of water flow.

  Along with the reciprocating motion of the connecting arm 12317, the circulation belt 12314R and the circulation belt 12314L are driven and circulated through the crank 12316. When the circulation belt 12314R and the circulation belt 12314L circulate, the roller 12312R and the roller 12312L rotate.

  As shown in FIG. 4D, a circulation belt 12318R is stretched around the roller pad on the right side of the roller 12312R and the shaft 1241 (component of the mission assembly 124). A circulation belt 12318L is stretched over the roller pad on the left side of the roller group 12313L and the shaft 1241. The rotation of the rollers 12312R and 12312L is transmitted to the shaft 1241 through the circulation belt 12318R and the circulation belt 12318L.

  5A, FIG. 5B, FIG. 5C, FIG. 5D, FIG. 5E, and FIG. 5F are views showing how the circulation belt 12314 circulates as the downstream assembly 13 reciprocates. 5A and 5B show a state in which the downstream assembly 13 is moving from the upstream side to the downstream side. The state in which the downstream assembly 13 is moving from the upstream side to the downstream side is a state in which the downstream assembly 13 is moving by receiving the force of the water flow. Accordingly, the circulation belt 12314 is driven to circulate by the force of the downstream assembly 13 via the connecting arm 12317 and the crank 12316.

  FIG. 5C shows a state where the connection point between the crank 12316 and the circulation belt 12314 reaches an end point on the downstream side of the circulation belt 12314 (hereinafter referred to as bottom dead center).

  FIG. 5D and FIG. 5E show a state in which the downstream assembly 13 is moving from the downstream side to the upstream side. When the downstream assembly 13 is moving from the downstream side to the upstream side, the downstream assembly 13 is driven by the shaft 1241 via the crank 12316, the connecting arm 12317, and the circulation belt 12318, and moves against the force of the water flow. It is in a state of being.

  As will be described later, while the circulation belt 12314 of the crank assembly 123R is driven by the downstream assembly 13 (FIGS. 5A and 5B), the circulation belt 12314 of the crank assembly 123L passes through the shaft 1241 and the circulation belt of the crank assembly 123R. The downstream assembly 13 is driven by the force received from 12314 (FIGS. 5D and 5E). Further, while the circulation belt 12314 of the crank assembly 123L is driven by the downstream assembly 13 (FIGS. 5A and 5B), the circulation belt 12314 of the crank assembly 123R receives from the circulation belt 12314 of the crank assembly 123L via the shaft 1241. The downstream assembly 13 is driven by force (FIGS. 5D and 5E).

  FIG. 5F shows a state where the connection point between the crank 12316 and the circulation belt 12314 has reached the upstream end point (hereinafter referred to as top dead center) of the circulation belt 12314.

  FIG. 6 is a diagram showing a circulation path R at a connection point between the crank 12316 and the circulation belt 12314. The circulation path R includes a forward path r1 that is a path from the upstream side to the downstream side of the water flow, a return path r3 that is a path from the downstream side to the upstream side of the water stream, and a return path r3 from the forward path r1. It includes a downstream return route r2 that is headed and an upstream return route r4 that is headed from the return route r3 to the forward route r1. The forward route r1 and the return route r3 are straight routes. The downstream return route r2 and the upstream return route r4 are semicircular routes.

  FIG. 7A is a top view of the downstream assembly 13, and FIG. 7B is a right side view of the downstream assembly 13. In FIG. 7A, the broken line indicates the shape of the central floating body 121.

  The downstream assembly 13 includes a reciprocating body 131 </ b> R and a reciprocating body 131 </ b> L, each of which is a floating body slidably attached in the direction of water flow along a rail (not shown) provided on the central floating body 121. In the reciprocating body 131R and the reciprocating body 131L, flanges provided on the left and right sides are inserted into groove-like rails provided on the inner side surface of the recess provided on the downstream side of the central floating body 121, and along the rails. It is movable. The connecting arm 12317 of the crank assembly 123R is connected to the reciprocating body 131R. The connecting arm 12317 of the crank assembly 123L is connected to the reciprocating body 131L.

  A rectangular parallelepiped frame 132R that extends toward the bottom of the water is attached below the bottom surface on the downstream side of the reciprocating body 131R. The frame 132R is a highly rigid structure with low resistance to water flow assembled by connecting a large number of rods. The frame 132R is connected to the reciprocating body 131R by a plurality of ropes 1311 (for example, wire ropes) extending obliquely downward from the bottom side of the reciprocating body 131R to the downstream side. With this rope 1311, the frame 132 </ b> R can maintain a posture in which the longitudinal direction is substantially the vertical direction even when receiving a water flow.

  On the downstream side of the reciprocating body 131R, a connected floating body 133R that is an elongated rectangular parallelepiped floating body whose longitudinal direction is a direction transverse to the direction of water flow is disposed. A rectangular parallelepiped frame 134R that extends toward the bottom of the water is attached to the bottom of the bottom surface of the connecting floating body 133R. The frame 134R has the same structure as the frame 132R.

  An end floating body 135R, which is an elongated rectangular parallelepiped floating body whose longitudinal direction is a direction transverse to the direction of the water flow, is disposed on the downstream side of the connection floating body 133R. A generally rectangular parallelepiped frame 136R extending toward the bottom of the water is attached to the bottom side of the bottom floating body 135R. The frame 136R has the same structure as the frame 132R and the frame 134R.

  Between the frame 132R and the frame 134R and between the frame 134R and the frame 136R, a total of 25 are arranged in 5 rows in the direction of the water flow and 5 rows in the direction transverse to the direction of the water flow as viewed from above. A resistor group 137R, which is a group of the resistor 1371, is arranged. The resistor 1371 is held by a rope (for example, a wire rope) spanned between the frame 132R and the frame 134R or between the frame 134R and the frame 136R.

  FIG. 8 shows the shape of the resistor 1371 and the state in which the resistor 1371 is held by a rope. The resistor 1371 includes a shaft rod 13711 which is a rod-like body elongated in the vertical direction, and five blades 13712 which are plate-like bodies protruding from the shaft rod 13711 on both sides in the horizontal direction. The five blades 13712 are aligned in the direction of a flat surface. In addition, each of the five blades 13712 has a blade shape (tip and end) when cut in a horizontal plane so that the water flow resistance is reduced in a state where the flat surface is arranged in the direction along the water flow. Is narrower than the center).

  Rings 138 are attached to the shaft rod 13711 at the upper, middle and lower portions of the five blades 13712. The shaft bar 13711 is rotatable inside the ring 138. A rope 139 is attached to each of the rings 138 on the upstream side and the downstream side. The rope 139 is, for example, a wire rope. The other end of the rope 139 having one end attached to a ring 138 has a frame 132R, a frame 134R, a frame 136R adjacent to the upstream or downstream side of the ring 138 in the direction of water flow. , Or another ring 138. As a result, the resistor 1371 is held by the plurality of rings 138 in a posture in which the longitudinal direction of the shaft rod 13711 is substantially vertical, and viewed from above, between the frame 132R and the frame 134R, or between the frame 134R and the frame It is held at a predetermined position between 136R.

  FIG. 8 shows a storage box 1301 and a rope 1302 in addition to a resistor 1371 and a ring 138 and a rope 139 for holding the resistor 1371. The storage box 1301 and the rope 1302 are components of the switching mechanism 130 described below. The rope 1302 is, for example, a wire rope.

  The description of the downstream assembly 13 will be continued with reference to FIGS. 7A and 7B. The downstream assembly 13 has the same components as the frame 132R, the connection floating body 133R, the frame 134R, the end floating body 135R, the frame 136R, and the resistor group 137R connected to the downstream side of the above-described reciprocating body 131R. A frame 132L, a connection floating body 133L, a frame 134L, an end floating body 135L, a frame 136L, and a resistor group 137L connected to the downstream side of the moving body 131L are provided.

  The downstream assembly 13 further rotates the 25 resistors 1371 included in the resistor group 137R around the shaft rod 13711 so that the flat surface of the blade 13712 is in a state along the direction of the water flow. In a non-driving state in which the water flow resistance generated in the state is small, and in a driving state in which the flat surface of the blade 13712 forms a predetermined angle (for example, 90 degrees) with respect to the direction of the water flow, A switching mechanism 130R for switching to any of the states is provided. Further, the downstream assembly 13 includes a switching mechanism 130L that rotates the 25 resistors 1371 included in the resistor group 137L around the shaft rod 13711 to switch between the non-driving state and the driving state.

  FIG. 9A is a diagram showing an upstream rope drive unit 1303 that is a component of the switching mechanism 130. The portion indicated by the solid line in FIG. 9A is the upstream rope drive unit 1303. 9A is a top view of the upstream rope drive unit 1303, the lower left view of FIG. 9A is a right side view of the upstream rope drive unit 1303, and the lower right view of FIG. 9A is a right side view. It is the figure of the upstream rope drive unit 1303 seen in the direction of the arrow Z shown in FIG.

  The upstream rope drive unit 1303 moves to the upstream side when the resistor 1371 is desired to be in a non-driven state, and moves to the downstream side when the resistor 1371 is desired to be driven. Arm 13032R extending downstream from 13031R, arm 13032L extending downstream from moving device 13031L, shift bar 13033 attached to arm 13032R and arm 13032L, and five rope connecting bars 13034 extending downward from the lower surface of shift bar 13033 Is provided.

  Each of the five rope connection bars 13034 is arranged at a position corresponding to the position of the resistor 1371 in the direction transverse to the direction of the water flow, and on the downstream side surface of each of the five rope connection bars 13034, The end of a rope 1302 for rotating the resistor 1371 at the corresponding position around the shaft rod 13711 is connected.

  FIG. 9B is a view showing a downstream rope drive unit 1304 that is a component of the switching mechanism 130. A portion indicated by a solid line in FIG. 9B is the downstream side rope drive unit 1304. 9B is a top view of the downstream rope drive unit 1304, the lower left view of FIG. 9B is a right side view of the downstream rope drive unit 1304, and the lower right view of FIG. 9B is a right side view. It is the figure of the downstream rope drive unit 1304 seen in the direction of the arrow Z shown in FIG.

  The downstream rope drive unit 1304 moves to the upstream side when the resistor 1371 is to be driven, and moves downstream when the resistor 1371 is not to be driven, the moving device 13041R and the moving device 13041L. Arm 13042R extending downstream from 13041R, arm 13042L extending downstream from moving device 13041L, shift bar 13043 attached to arm 13042R and arm 13042L, and five rope connecting bars 13044 extending downward from the lower surface of shift bar 13043 Is provided.

  Each of the five rope connection bars 13044 is arranged at a position corresponding to the position of the resistor 1371 in the direction transverse to the direction of the water flow, and on the downstream side surface of each of the five rope connection bars 13044, The end of a rope 1302 for rotating the resistor 1371 at the corresponding position around the shaft rod 13711 is connected.

  FIG. 10 is a view showing a structure in which the resistor 1371 is rotationally driven around the shaft rod 13711 by the rope 1302 moved by the upstream rope drive unit 1303 and the downstream rope drive unit 1304. FIG. 10 shows a state where the storage box 1301 shown in FIG. 8 is removed. The storage box 1301 stores a rack 1305R and a rack 1305L. Ropes 1302 are attached to both ends of the rack 1305R and both ends of the rack 1305L.

  The rack 1305R and the rack 1305L are arranged at positions where the pinion 1306 fixed to the top of the shaft bar 13711 is sandwiched from the left and right. In this state, the teeth of the racks 1305R and 1305L mesh with the teeth of the pinion 1306. Therefore, when the rack 1305R moves to the upstream side and the rack 1305L moves to the downstream side, the resistor 1371 is rotated clockwise around the axis of the shaft rod 13711 as viewed from above. Further, when the rack 1305R moves to the downstream side and the rack 1305L moves to the upstream side, the resistor 1371 is rotated counterclockwise around the axis of the shaft rod 13711 when viewed from above.

  A rope 1302 having one end connected to the rope connecting bar 13034 of the upstream rope drive unit 1303 is a positioning pulley 1307 (FIG. 9A) housed in a housing box 1301 disposed on the reciprocating body 131. 9B) extends in the downstream direction and is connected to the upstream side of the rack 1305R accommodated in the accommodation box 1301 adjacent to the downstream side. One end of another rope 1302 is connected to the downstream side of the rack 1305R, and the rope 1302 is further connected to the upstream side of the rack 1305R accommodated in the accommodation box 1301 on the downstream side. Thus, the racks 1305R accommodated in the accommodation boxes 1301 adjacent to each other are connected to each other by the rope 1302.

  The rope 1302 connected to the downstream side of the rack 1305R accommodated in the accommodation box 1301 arranged at the top of the most downstream resistor 1371 is connected to the accommodation box 1301 arranged on the end floating body 135. It changes the direction 180 degrees along the side surface of the accommodated fixed pulley 1308 (see FIGS. 9A and 9B), extends from the downstream side to the upstream side, and the end of the top of the resistor 1371 on the most downstream side Are connected to the downstream side of the rack 1305L accommodated in the accommodation box 1301 arranged in the box. Another rope 1302 is connected to the upstream end of the rack 1305L, and the other end of the rope 1302 is connected to the downstream side of the rack 1305L stored in the storage box 1301 adjacent to the upstream side. It is connected. In this manner, the racks 1305L accommodated in the accommodation boxes 1301 adjacent to each other are connected to each other by the rope 1302.

  The rope 1302 having one end connected to the upstream side of the rack 1305L accommodated in the accommodation box 1301 disposed on the most upstream end floating body 135 is disposed on the reciprocating body 131. It extends in the upstream direction through one side surface of the positioning pulley 1307 housed in the housing box 1301, and the other end is coupled to the rope coupling bar 13044 of the downstream rope drive unit 1304. .

  As described above, the rack 1305R and the rack 1305L connected to each other via the rope 1302 between the upstream rope drive unit 1303 and the downstream rope drive unit 1304 are subjected to the flow of water as the moving device 13031 and the moving device 13041 move. It moves in the opposite direction along the direction and rotates the plurality of resistors 1371 simultaneously.

  11A, 11B, and 11C are diagrams illustrating a state in which the resistor 1371 is switched between a driving state and a non-driving state as the moving device 13031 and the moving device 13041 move. FIG. 11A shows a state where the moving device 13031 is located on the most downstream side in the movable range and the moving device 13041 is located on the most upstream side in the movable range. In this state, the resistor 1371 is in a driving state.

  FIG. 11B shows a state in which the moving device 13031 and the moving device 13041 are located at intermediate points in the respective movable ranges. In this state, the resistor 1371 is in a state between a driving state and a non-driving state (a state in the middle of switching).

  FIG. 11C shows a state where the moving device 13031 is located on the most upstream side in the movable range and the moving device 13041 is located on the most downstream side in the movable range. In this state, the resistor 1371 is in a non-driven state.

  In addition, when the moving device 13031 and the moving device 13041 that are adjacent to each other move, their moving directions need to be reversed and the moving speeds should be equal. Therefore, a pinion group 1309 including a plurality of pinions is arranged between the moving device 13031 and the moving device 13041 adjacent to each other. Racks are attached to the left side surface of the moving device 13031 and the right side surface of the moving device 13041, and the teeth of the rack are engaged with the pinion teeth included in the pinion group 1309. As a result, the moving directions of the moving device 13031 and the moving device 13041 that are adjacent to each other are always opposite to each other, and their moving speeds are equal.

  The moving device 13031 and the moving device 13041 are connected at the connecting point of the circulating belt 12314 of the crank 12316 connected via the connecting arm 12317 to the reciprocating body 131 in which the moving device 13031 and the moving device 13041 are arranged. The resistor 1371 is moved to a position where the resistor 1371 is driven at the timing when the top dead center of the circulation path R is reached. Further, the moving device 13031 and the moving device 13041 move to a position where the resistor 1371 is brought into the non-driven state at the timing when the connection point reaches the bottom dead center of the circulation path R.

  The resistor 1371 in the driving state generates a large water flow resistance, and the reciprocating body 131 is pulled from the upstream side to the downstream side by the force of the reaction. The resistor 1371 in the non-driven state is pulled by the reciprocating body 131 from the downstream side to the upstream side while generating a small water flow resistance. The force that pulls the resistor 1371 in the non-driven state from the downstream side to the upstream side is a part of the force that the resistor 1371 in the driven state connected to the other reciprocating body 131 receives from the water flow. It is transmitted via the shaft 1241 of the mission assembly 124.

  It should be noted that stagnation occurs in the water flow immediately after the downstream side of the resistor 1371 in the driven state, but the stagnation is further eliminated by the influence of the surrounding water flow in the downstream region. Each of the driven resistors 1371 is preferably subjected to a greater force from a water stream without stagnation. Accordingly, there is a distance between the plurality of resistors 1371 connected from the upstream side to the downstream side, which is necessary for eliminating the stagnation of the water flow generated by the resistor 1371 adjacent to the upstream side in the driving state more than a certain level. It is secured.

  The rope 1302, the upstream rope drive unit 1303, the downstream rope drive unit 1304, the rack 1305, the pinion 1306, the fixed pulley 1307, the fixed pulley 1308, and the pinion group 1309 are the components of the switching mechanism 130.

  As described above, the reciprocating body 131R to which the resistor group 137R, which is alternately switched between the driving state and the non-driving state, is connected, and the resistor group 137R is at the opposite timing between the driving state and the non-driving state. The reciprocating body 131L to which the resistor group 137L that is alternately switched is connected performs reciprocating motion with phases opposite to each other.

  The reciprocating motion of the reciprocating body 131 is changed to a circulating motion along the circulation path R by the crank assembly 123 described above. The circulating motion is transmitted to the roller 12312 as a rotational motion. The rotational movement of the roller 12312 is transmitted to the power generation device 122 via the transmission assembly 12 by the circulation belt 12318.

  The configuration of the mission assembly 124 will be described with reference to FIG. 3A. The mission assembly 124 includes a shaft 1241 that rotates in conjunction with a roller 12312 (see FIG. 4C) via a circulation belt 12318, and a circulation belt 1242 that transmits the rotational movement of the shaft 1241 to the rotating shaft 1221 of the coil of the power generator 122. Prepare.

  The mission assembly 124 further includes a circulation belt 1243 that is stretched around the rotating shaft of the auxiliary motor 125 and the shaft 1241. The auxiliary motor 125 operates at the timing when the connection point between the crank 12316 and the circulation belt 12314 reaches approximately the top dead center or the bottom dead center in accordance with control of a control device (not shown), and applies driving force to the shaft 1241.

  The driving force applied to the shaft 1241 from the auxiliary motor 125 is for preventing the rotation direction of the shaft 1241 whose rotation speed has been lowered from turning in the reverse direction. That is, when the connection point between the crank 12316 and the circulation belt 12314 reaches the top dead center, the driving force applied to the shaft 1241 by the auxiliary motor 125 is transmitted to the circulation belt 12314, so that the connection point is along the return path r3. Thus, there is no inconvenience of going backward to the downstream side. Further, when the connection point between the crank 12316 and the circulation belt 12314 reaches the bottom dead center, the driving force applied to the shaft 1241 by the auxiliary motor 125 is transmitted to the circulation belt 12314, so that the connection point is along the forward path r1. Therefore, there is no inconvenience of going back to the upstream side. Instead of the auxiliary motor 125, a flywheel may be used.

  The electric power generated by the power generation device 122 is transmitted to a power use place via a transmission line (not shown) such as a submarine cable used on a remote island. Note that part of the electric power generated by the power generation device 122 is used for the operation of the auxiliary motor 125, the operation of the moving device 13031 and the moving device 13041, and the like.

  As described above, the downstream return path r2 and the upstream return path r4 of the circulation path R are curved with a large curvature. Therefore, the power generation system 1 reciprocates so that an excessive force is not applied to the connection point when the connection point between the crank 12316 and the circulation belt 12314 is in the downstream return route r2 or the upstream return route r4. An electric brake that reduces the moving speed of the reciprocating moving body 131 is provided immediately before the body 131 approaches the position on the most downstream side of the movable range.

  FIG. 12 is a diagram illustrating an arrangement of the braking roller group 126 including a plurality of braking rollers attached to a plurality of rotating shafts included in the electric brake included in the power generation system 1. The braking roller included in the braking roller group 126 is in contact with the side surface of the reciprocating body 131 when the reciprocating body 131 moves sideways from the upstream side to the downstream side to provide resistance. Reduce travel speed. The force generated by the reaction of the resistance applied to the reciprocating body 131 by the braking rollers included in the braking roller group 126 is used for power generation in the power brake. That is, a coil placed in a magnetic field is attached to the rotating shaft of an electric brake that is rotationally driven by the force received from the reciprocating body 131 to generate electric power. The electric power generated by the electric brake is used, for example, as electric power for switching between the driving state and the non-driving state of the resistor 1371.

  As described above, according to the power generation system 1, power generation is performed by the kinetic energy of the reciprocating moving body 131 that reciprocates in different phases depending on the force of the water flow. In the power generation system 1, the reciprocating motion of the plurality of reciprocating bodies 131 is changed to the circulating motion along the circulation path R by the shaft 1241, and further changed to the rotational motion, and then the rotational motion force is applied to the circulating belt 12318. To the shaft 1241 arranged in the horizontal direction. Therefore, at the time of designing the power generation system 1, the arrangement of each of the plurality of reciprocating bodies 131 can be flexibly changed by adjusting the length and position of the shaft 1241, for example.

[Modification]
The above-described embodiments can be variously modified within the scope of the technical idea of the present invention. Examples of these modifications are shown below. A plurality of modifications shown below may be combined.

(1) The number and arrangement of components included in the power generation system 1 according to the above-described embodiment can be variously changed. For example, the resistor 1371 included in the power generation system 1 includes five blades 13712, but the number of blades 13712 is not limited to five, and may be four or less or six or more.

  Further, the power generation system 1 has a total of 25 resistors arranged in five rows in the direction of the water flow and five rows in the direction transverse to the direction of the water flow on the downstream side of each of the reciprocating body 131R and the reciprocating body 131L. Two sets of bodies 1371 are provided in the direction of water flow. The number of columns and the number of sets can be changed variously.

  The power generation system 1 includes a unit that drives the shaft 1241 (a reciprocating body 131, a crank assembly 123 that is coupled to the upstream side of the reciprocating body 131, and a resistor that is coupled to the downstream side of the reciprocating body 131. 2 units including a group 137 and the like (hereinafter referred to as drive units). The number of drive units provided in the power generation system according to the present invention is not limited to two, and may be any number of three or more.

  FIG. 13 is a top view of the power generation system 2 according to an example of this modification. In FIG. 13, components that the power generation system 2 has in common with the power generation system 1 are assigned the same reference numerals as those in the power generation system 1. In addition, in FIG. 13, components connected to the downstream side of the reciprocating body are indicated by broken-line rectangles for simplification of the drawing.

  The power generation system 2 includes eight drive units, that is, a drive unit 201R1, a drive unit 201R2, a drive unit 201R3, a drive unit 201R4, a drive unit 201L4, a drive unit 201L3, a drive unit 201L2, and a drive unit 201L1 in order from the right side. The power generation system 2 includes a central floating body 221 that slidably accommodates the reciprocating bodies of these eight drive units in place of the central floating body 121 of the system 1.

  The drive unit 201R1, the drive unit 201R2, the drive unit 201R3, and the drive unit 201R4 disposed on the right side of the central floating body 221 are connected to the shaft 2241R. Further, the drive unit 201L1, the drive unit 201L2, the drive unit 201L3, and the drive unit 201L4 disposed on the left side of the central floating body 221 are coupled to the shaft 2241L.

  The shaft 2241R is connected to the power generator 222R. The shaft 2241L is connected to the power generator 222L. The power generation system 2 does not include a component corresponding to the auxiliary motor 125 included in the power generation system 1.

  In the drive unit 201R1, the drive unit 201R2, the drive unit 201R3, and the drive unit 201R4 connected to the shaft 2241R, a crank (a component corresponding to the crank 12316 of the power generation system 1) and a circulation belt (on the circulation belt 12314 of the power generation system 1) The arrangement of the drive units is adjusted so that the connection points of the corresponding components) (hereinafter simply referred to as connection points) perform a circular motion along the circulation path R with a phase shifted from each other by a quarter period. Yes.

  Further, the connecting points of the drive unit 201L1, the drive unit 201L2, the drive unit 201L3, and the drive unit 201L4 connected to the shaft 2241L perform a circular motion along the circulation path R at a phase that is shifted by a quarter period. The arrangement of these drive units has been adjusted.

  The drive unit 201R1 and the drive unit 201L1, the drive unit 201R2 and the drive unit 201L2, the drive unit 201R3 and the drive unit 201L3, and the drive unit 201R4 and the drive unit 201L4 have the same phase of the circulatory motion at their connection point.

  14A, 14B, 14C, and 14D are diagrams showing the positional relationship of the connection points on the circulation path R in the four drive units arranged on the left and right of the power generation system 2. FIG. 14A, 14B, 14C, and 14D, the connecting point J1, the connecting point J2, the connecting point J3, and the connecting point J4 are respectively the connecting point of the driving unit 201R1 or the driving unit 201L1, the driving unit 201R2 or The connection point of the drive unit 201L2, the connection point of the drive unit 201R3 or the drive unit 201L3, and the connection point of the drive unit 201R4 or the drive unit 201L4.

  FIG. 14A shows a state where the connecting point J1 has reached top dead center and the connecting point J3 has reached bottom dead center. In this state, the drive unit 201R2 or the drive unit 201L2 drives the circulation belt from the upstream side to the downstream side at the connection point J2. Therefore, the connection point J1 and the connection point J3 do not take a course in the reverse direction along the circulation path R.

  FIG. 14B shows a state where the connecting point J4 has reached the top dead center and the connecting point J2 has reached the bottom dead center. In this state, the drive unit 201R1 or the drive unit 201L1 drives the circulation belt from the upstream side to the downstream side at the connection point J1. Therefore, the connection point J4 and the connection point J2 do not take a course in the reverse direction along the circulation path R.

  FIG. 14C shows a state where the connecting point J3 has reached the top dead center and the connecting point J1 has reached the bottom dead center. In this state, the drive unit 201R4 or the drive unit 201L4 drives the circulation belt from the upstream side to the downstream side at the connection point J4. Therefore, the connection point J3 and the connection point J1 do not take a course in the reverse direction along the circulation path R.

  FIG. 14D shows a state where the connection point J2 has reached the top dead center and the connection point J4 has reached the bottom dead center. In this state, the drive unit 201R3 or the drive unit 201L3 drives the circulation belt from the upstream side to the downstream side at the connection point J3. Therefore, the connection point J2 and the connection point J4 do not take a course in the reverse direction along the circulation path R.

  As described above, since the connection point of any drive unit is located in the forward path r1 while the connection point of any drive unit is in the downstream return path r2 or the upstream return path r4, the shaft The forward driving force for 2241R or shaft 2241L is always maintained. Therefore, the power generation system 2 does not need to include a component corresponding to the auxiliary motor 125 or the flywheel of the power generation system 1.

  In the power generation system 2 described above, the drive units 201R1, the drive units 201R2, the drive units 201R3, and the drive units 201R4 are connected in order of reciprocating motion with a phase shifted by a quarter cycle. The arrangement of the points is adjusted, but the method of shifting the phase is not limited to this. For example, the arrangement of the connecting points of these drive units is adjusted so that the drive unit 201R1, the drive unit 201R3, the drive unit 201R2, and the drive unit 201R4 are reciprocated with a phase shifted by a quarter cycle. Also good.

  Similarly, in the power generation system 2 described above, in order of the drive unit 201L1, the drive unit 201L2, the drive unit 201L3, and the drive unit 201L4, the drive units 201L1, the drive unit 201L4, and the drive unit 201L4 are reciprocated at a phase shifted by a quarter cycle. The arrangement of the connection points has been adjusted. For example, the drive unit 201L1, the drive unit 201L3, the drive unit 201L2, and the drive unit 201L4 are driven in such a manner that they reciprocate with a phase shifted by a quarter cycle. The arrangement of the connecting points of the units may be adjusted.

  FIG. 15 is a top view of the power generation system 3 according to another example of this modification. In FIG. 15, components that the power generation system 3 includes in common with the power generation system 1 are assigned the same reference numerals as those in the power generation system 1. Further, in FIG. 15, components connected to the downstream side of the reciprocating body are indicated by broken-line rectangles for simplification of the drawing.

  The power generation system 3 includes a central floating body 321 as a component corresponding to the central floating body 121 of the power generation system 1. The drive unit 301R is connected to the downstream right side of the central floating body 321, the drive unit 301L is connected to the downstream left side, and the drive unit 301C is connected to the downstream center.

  The number of resistors 1371 included in the drive unit 301C is, for example, the total number of resistors 1371 included in the drive unit 301R and the number of resistors 1371 included in the drive unit 301L.

  The auxiliary drive unit 302R1 and the auxiliary drive unit 302R2 are connected to the right side on the upstream side of the central floating body 321 in order from the outside. Further, the auxiliary drive unit 302L1 and the auxiliary drive unit 302L2 are connected to the left side of the upstream side of the central floating body 321 in order from the outside. The auxiliary drive unit 302R1, the auxiliary drive unit 302R2, the auxiliary drive unit 302L1, and the auxiliary drive unit 302L2 are at a timing when any of the connection points of the drive unit 301R, the drive unit 301L, and the drive unit 301C reaches top dead center or bottom dead center. This is an auxiliary drive unit provided to provide rotational drive to the shaft 1241. Hereinafter, the auxiliary drive unit 302R1, the auxiliary drive unit 302R2, the auxiliary drive unit 302L1, and the auxiliary drive unit 302L2 are collectively referred to as the auxiliary drive unit 302.

  16A is a top view of the auxiliary drive unit 302, and FIG. 16B is a right side view of the auxiliary drive unit 302. FIG.

  The number of resistors included in the auxiliary drive unit 302 and the number of blades included in the resistor are smaller than the number of resistors included in the drive unit 301R, the drive unit 301L, and the drive unit 301C and the number of blades included in the resistor. .

  Further, the resistor included in the auxiliary drive unit 302 is held by a frame 3021 assembled with a bar. This is because the auxiliary drive unit 302 is disposed on the upstream side of the central floating body 321 and therefore the position and posture of the resistor included in the auxiliary drive unit 302 cannot be held by the rope.

  FIG. 17 is a diagram illustrating a state in which the frame 3021 holds the resistor 3371 included in the auxiliary drive unit 302. In FIG. 17, the rope 1302 that penetrates the containing box 1301 in the direction of the water flow is not shown. As shown in FIG. 17, the ring 138 attached to the shaft rod 33711 of the resistor 3371 includes a plurality of rods attached to the frame 3021 obliquely with respect to the direction of water flow on the horizontal plane. Are connected. Therefore, even if the resistor 3371 receives the force of water flow, the distance between the resistor 3371 and the central floating body 321 and the posture thereof are maintained.

  18A, FIG. 18B, FIG. 18C, and FIG. 18D are diagrams showing the positional relationship of the connection points on the circulation path R in the drive unit that the power generation system 3 has. 18A, 18B, 18C, and 18D, the connection point J1, the connection point J2, the connection point J3, and the connection point J4 are respectively a connection point of the drive unit 301R or the drive unit 301L, and a connection point of the drive unit 301C. A connection point, a connection point of the auxiliary drive unit 302R1 or the auxiliary drive unit 302L1, and a connection point of the auxiliary drive unit 302R2 or the auxiliary drive unit 302L2.

  FIG. 18A shows a state where the connecting point J3 has reached the top dead center and the connecting point J4 has reached the bottom dead center. In this state, the drive unit 301C drives the circulation belt from the upstream side to the downstream side at the connection point J1. Therefore, the connection point J3 and the connection point J4 do not take a course in the reverse direction along the circulation path R.

  FIG. 18B shows a state where the connecting point J2 has reached the top dead center and the connecting point J1 has reached the bottom dead center. In this state, the auxiliary drive unit 302R1 or the auxiliary drive unit 302L1 drives the circulation belt from the upstream side to the downstream side at the connection point J3. Therefore, the connection point J2 and the connection point J1 do not take a course in the reverse direction along the circulation path R.

  FIG. 18C shows a state where the connecting point J4 has reached the top dead center and the connecting point J3 has reached the bottom dead center. In this state, the drive unit 301R or the drive unit 301L drives the circulation belt from the upstream side to the downstream side at the connection point J2. Therefore, the connection point J4 and the connection point J3 do not take a course in the reverse direction along the circulation path R.

  FIG. 18D shows a state where the connecting point J1 has reached the top dead center and the connecting point J2 has reached the bottom dead center. In this state, the auxiliary drive unit 302R2 or the auxiliary drive unit 302L2 drives the circulation belt from the upstream side to the downstream side at the connection point J4. Therefore, the connection point J1 and the connection point J2 do not take a course in the reverse direction along the circulation path R.

  As described above, the auxiliary drive unit 302R1 and the auxiliary drive unit 302L1, while the connection point of the drive unit 301R and the drive unit 301L or the drive unit 301C is in the downstream return path r2 or the upstream return path r4, or Since the connection point between the auxiliary drive unit 302R2 and the auxiliary drive unit 302L2 is located in the forward path r1, the forward driving force with respect to the shaft 1241 is always maintained. Therefore, the power generation system 3 does not need to include a component corresponding to the auxiliary motor 125 or the flywheel of the power generation system 1.

(2) The blade 13712 of the resistor 1371 included in the power generation system 1 described above is rotated around the axis of the shaft rod 13711. The direction of rotation of the blade 13712 is not limited to this. For example, a configuration in which the blade 13712 is rotated around a horizontal axis may be employed.

(3) The resistor 1371 included in the above-described power generation system 1 includes a plate-shaped blade 13712, and the driving state and the non-driving state are switched by changing the angle of the blade 13712 with respect to the water flow. The resistor according to the present invention is not limited to the plate-like body, and the structure can be variously changed as long as it has a structure capable of switching between a state of high water flow resistance and a state of low water flow resistance. For example, a resistor that can be switched between a driving state and a non-driving state by switching between the expanded state and the folded state of the flexible sheet-like member may be employed.

(4) In the power generation system 1 described above, as the force for pulling up the drive unit from the downstream side to the upstream side, the force of the drive unit that moves by the force of water flow from the upstream side to the downstream side via the shaft 1241. Some are used. Instead, the drive unit may be lifted from the downstream side to the upstream side by the power of the motor that is operated by the electric power generated by the power generation device 122 and temporarily stored in the power storage device.

(5) In the power generation system 1 described above, the two drive units operate with a phase shifted by ½ period. In the power generation system 2 and the power generation system 3 according to the above-described modification (1) or (2), each of the four groups of drive units operates at a phase shifted by a quarter cycle. The number of drive units (number of groups) operating in different phases is not limited to 2 or 4. For example, a configuration may be adopted in which drive units divided into three groups operate with phases shifted by 1/3 period for each group. Even in this case, while the connecting point of the drive units of any group is in the upstream return path r4 or the downstream return path r2, any other group of drive units is in the forward path r1. If there is, there will be no reversal of the connecting point.

(6) In the power generation system 1 described above, the forward path r1 and the return path r3 are straight lines, and the downstream return path r2 and the upstream return path r4 are semicircular paths. The forward route r1 and the return route r3 may be curved. Further, as long as the downstream return route r2 and the upstream return route r4 are curved with a curvature larger than the curvature of the forward route r1 and the return route r3, a semicircle may not be drawn.

(7) In the power generation system 1 described above, the moving speed is reduced before the reciprocating body 131 reaches the most downstream position. Instead of this, for example, the braking may be performed so that the moving speed is reduced before the reciprocating body 131 reaches the most upstream position.

(8) Instead of the rope 113 employed in the power generation system 1 described above, a chain, a bar, or the like may be used. Also, a combination of two or more of ropes, chains, rods, etc. may be employed. The same applies to the rope 139.

(9) Among the structures provided in the power generation system 1 described above, at least a part of the structures disposed in the water is provided with a hollow portion or a float is attached so as to generate a buoyancy that counteracts its own weight in the water. May be. Moreover, in the electric power generation system 1 mentioned above, you may make it a part of structure arrange | positioned on the water arrange | position on the water or on the water surface. For example, a configuration may be adopted in which the storage box 1301 and the rope 1302 are floated on the water surface and all the ropes 139 including the uppermost rope 139 are disposed in the water.

DESCRIPTION OF SYMBOLS 1 ... Power generation system, 2 ... Power generation system, 3 ... Power generation system, 11 ... Upstream assembly, 12 ... Center assembly, 13 ... Downstream assembly, 111 ... Upstream floating body, 112 ... Anchor, 113 ... Rope, 114 ... Connection plate , 121 ... central floating body, 122 ... power generation device, 123 ... crank assembly, 124 ... mission assembly, 125 ... auxiliary motor, 126 ... braking roller group, 130 ... switching mechanism, 131 ... reciprocating body, 132 ... frame, 133 ... Connecting floating body, 135 ... end floating body, 137 ... resistor group, 138 ... ring, 139 ... rope, 221 ... central floating body, 302 ... auxiliary drive unit, 321 ... central floating body, 1221 ... rotating shaft, 1231 ... sub crank assembly, 1241 ... Shaft 1242 Circulating belt 1243 Circulating belt 1 01 ... Storage box, 1302 ... Rope, 1303 ... Upstream rope drive unit, 1304 ... Downstream rope drive unit, 1305 ... Rack, 1306 ... Pinion, 1307 ... Fixed pulley, 1308 ... Constant pulley, 1309 ... Pinion group, 1371 ... Resistance, 3021 ... Frame, 3371 ... Resistance, 12312 ... Roller, 12314 ... Circulation belt, 12316 ... Crank, 12317 ... Connection arm, 12318 ... Circulation belt, 13031 ... Moving device, 13032 ... Arm, 13033 ... Shift bar, 13034 ... Rope connecting bar, 13041 ... Moving device, 13043 ... Shift bar, 13044 ... Rope connecting bar, 13711 ... Shaft bar, 13712 ... Blade, 33711 ... Shaft bar

Claims (4)

A floating body moored at the bottom of the water,
A plurality of reciprocating bodies coupled to the floating body so as to be capable of reciprocating along the direction of the flow of water;
A plurality of resistors coupled to each of the plurality of reciprocating bodies to generate a water flow resistance;
A driving state in which each of the plurality of reciprocating bodies provided in each of the plurality of reciprocating bodies and connected to the reciprocating body generates a large water flow resistance by at least one of an angle change and a shape change with respect to the water flow; A plurality of switching mechanisms that switch between non-driven states that generate a small water flow resistance,
The plurality of switching mechanisms include one or more connected to other reciprocating bodies while driving one or more of the resistors connected to some of the reciprocating bodies among the plurality of reciprocating bodies. The resistor is in a non-driven state,
The reciprocating motion of the reciprocating body connected to each of the plurality of reciprocating bodies is a straight forward path from the upstream side to the downstream side of the water flow, and a straight return path path from the downstream side to the upstream side of the water flow. A curved downstream return path from the forward path to the return path, and a curved upstream return path from the return path to the forward path, and a plurality of changes to a circular motion along the circulation path The crank,
A power generation device disposed on the floating body;
A power transmission system comprising: a power transmission mechanism that transmits a driving force generated by the circulation motion generated by the plurality of cranks to a rotating shaft of a coil of the power generation device. The positional relationship in the direction of water flow between the plurality of reciprocating bodies is such that the position of a connection point that moves on the circulation path of the crank connected to one or more reciprocating bodies is within the upstream return path or the The position of a connection point that moves on the circulation path of the crank that is connected to one or more other reciprocating bodies while in the downstream return path is adjusted to be in the forward path. The power generation system according to 1. With respect to each of the plurality of reciprocating bodies, when the position of a connecting point that moves on the circulation path of the crank connected to the reciprocating body is in the upstream return path or the downstream return path, the connection is established. 3. The power generation system according to claim 1, further comprising an electric brake that applies resistance to the reciprocating moving body so that a moving speed of the point is equal to or less than a predetermined threshold and generates power by a force generated by a reaction of the resistance. One or more of the resistors connected to one or more reciprocating bodies of the plurality of reciprocating bodies are either a rope, a chain, or a bar, or a rope, a chain, and a rod on the downstream side of the water flow with respect to the reciprocating body. The power generation system according to any one of claims 1 to 3, wherein the power generation system is connected using a combination of two or more selected from rods.