JP7062676B2 - Support device for water installation of solar cell module and water system - Google Patents

Description

The present invention relates to a support device for water installation of a solar cell module used for installing a photovoltaic power generation facility on water, and a water photovoltaic power generation system.

In recent years, as a floating solar power generation system, solar power generation equipment has been installed on water such as lakes and ponds. In such a water-based photovoltaic power generation system, the solar cell module is placed on a water-float so that the solar cell module can be floated on the water. Usually, one solar cell module is mounted on one water float, and a plurality of floats are connected on the water to form a water solar power generation system.

Patent Document 1 discloses a configuration in which connecting portions protruding from the four corners of the water float are provided, holes provided in the connecting portion are overlapped, and a bolt is passed through the holes from above to connect the water float. ing. With the configuration of Patent Document 1, the work of connecting the water float can be easily performed, and the construction of the water solar power generation system on the water becomes simple.

Special Table 2014-511043 Gazette

The connecting portion of Patent Document 1 can rotate horizontally around a bolt passed from above, but has a small degree of freedom of rotation in the vertical direction. That is, the degree of freedom of rotation of the connected water floats in the vertical direction is small. In water installation, the influence of vertical displacement tends to be large due to the influence of waves, and if the degree of freedom of rotation in the vertical direction between connected water floats is small, an excessive load will be applied to the connecting part, and the connecting part will be overloaded. May be damaged.

In addition, when considering installing a water solar power generation system in a pond, the entire pond may be drained for maintenance in such a pond. Normally, the shape of the bottom of the pond is not flat, and when the pond is drained with the water solar power generation system installed, the degree of freedom of rotation in the vertical direction between the connected water floats is small. The configuration cannot adapt to the shape of the bottom of the pond. Therefore, the pond where the water is drained is unsuitable as the installation location of the floating solar power generation system of Patent Document 1, and there is also a problem that the installation location is limited.

The present invention has been made in view of the above problems, and is a solar cell that can be easily connected to water-mounted support devices and has a high degree of freedom of rotation in the vertical direction between the connected water-mounted support devices. It is an object of the present invention to provide a support device for water installation of a module and a water solar power generation system.

In order to solve the above problems, the support device for water installation of the present invention is a support device for water installation of a solar cell module connected to each other on the water to form a water solar power generation system, and is for water installation. The support device includes a main body portion that is a floating body on which the solar cell module is placed, and a connecting portion that is provided so as to project from the main body portion and has a shaft hole. By stacking the shaft holes of the portions and inserting the rotary shaft member into both of the stacked shaft holes in the horizontal direction, the connecting portion rotates around the rotary shaft member and can rotate in the vertical direction. It is characterized by being connected.

Further, in order to solve the above-mentioned problems, in the water-based photovoltaic power generation system of the present invention, the connected portions of the water-mounted support devices to be connected rotate around the rotating shaft member to rotate in the vertical direction. It is possible to switch between a movable state in which movement is possible and a fixed state in which the relative positions of the connected support devices for water installation are fixed by restricting the rotation of the connecting portion around the rotating shaft member. It is a feature.

Further, in the water solar power generation system, an engaging concave portion is formed in the shaft hole, an engaging convex portion is formed in the rotating shaft member, and the movable state and the fixed state are the shaft hole. It is possible to switch by rotating the rotary shaft member within the movable state, and the engaging convex portion does not engage with the engaging concave portion in the movable state, and the engaging convex portion is engaged with the engaging concave portion in the fixed state. By engaging, the connecting portion can be configured to be rotationally restricted with respect to the rotating shaft member.

Further, in the water solar power generation system, the movable state and the fixed state can be switched by rotating the rotating shaft member in the shaft hole, and in the movable state, the shaft hole and the rotating shaft member can be switched. In the fixed state, the shaft hole and the rotary shaft member are brought into contact with each other, and the rotation is restricted by the frictional force between the connecting portion and the rotary shaft member. Can be done.

Further, in the water solar power generation system, the rotating shaft of the rotating shaft member is provided with a tapered portion whose thickness gradually increases from one end side to the other end side. The fixed state can be switched by moving the rotating shaft member along the axial direction in the shaft hole, and in the movable state, a gap is provided between the shaft hole and the rotating shaft member. In the fixed state, the shaft hole and the rotary shaft member may be brought into contact with or engaged with each other, and the rotation may be restricted by the frictional force or the engagement between the connecting portion and the rotary shaft member.

Further, in the water solar power generation system, a lock hole is provided in the connecting portion, nothing is inserted into the lock hole in the movable state, and the lock hole is locked to the lock hole overlapped with each other in the fixed state. The pin is inserted, and the connecting portion can be restricted from rotating with respect to the rotating shaft member by the lock pin.

In the water-mounted support device and the water-based solar power generation system of the present invention, the connected water-mounted support devices can rotate in the vertical direction, so that the position is displaced in the vertical direction due to the influence of waves or the like. However, it is possible to suppress an excessive load from being applied to the connecting portion, and it is possible to prevent the connecting portion from being damaged by the excessive load.

It is a perspective view which shows the schematic structure of the water float which concerns on Embodiment 1. FIG. It is a perspective view which shows the state which the solar cell module is attached to the water float. It is a top view which shows the schematic structure of the surface solar power generation system which concerns on Embodiment 1. FIG. It is an exploded perspective view which shows the structure of the rotary shaft member. It is sectional drawing which shows the connection structure of the water float which concerns on Embodiment 2, (a) shows the movable state, (b) shows the fixed state. It is sectional drawing which shows the connection structure of the water float which concerns on Embodiment 3, (a) shows the movable state, (b) shows the fixed state. It is sectional drawing which shows the modification of the connection structure of the water float which concerns on Embodiment 3, (a) shows the movable state, (b) shows the fixed state. It is a top view which shows the connection structure of the water float which concerns on Embodiment 4, (a) shows a movable state, (b) shows a fixed state. It is a top view which shows the modification of the connection structure of the water float which concerns on Embodiment 4, (a) shows a movable state, (b) shows a fixed state. It is sectional drawing which shows the connection structure of the water float which concerns on Embodiment 5, (a) shows the movable state, (b) shows the fixed state. It is a top view which shows the schematic structure of an example of the surface solar power generation system which concerns on Embodiment 6. It is a top view which shows the schematic structure of another example of the surface solar power generation system which concerns on Embodiment 6. It is a top view which shows the schematic structure of the surface solar power generation system which concerns on Embodiment 7.

[Embodiment 1]
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a schematic configuration of a water float (support device for water installation) 10 according to the first embodiment. Further, FIG. 2 is a perspective view showing a state in which the solar cell module 20 is attached to the water float 10. FIG. 3 is a plan view showing a schematic configuration of the water solar power generation system 1 according to the first embodiment.

The water float 10 has a main body portion 11 and a plurality of connecting portions 12. The main body 11 is, for example, a floating body formed of resin so that the inside is hollow, and is configured to have sufficient buoyancy so that it floats on water even when the solar cell module 20 is mounted. .. The connecting portion 12 is used for connecting a plurality of water floats 10 to each other, and is provided so as to project laterally from the side surface of the main body portion 11. Further, the connecting portion 12 is formed with a shaft hole 12A for inserting the rotary shaft member 30 (see FIGS. 3 and 4), which will be described later, so that the shaft thereof is inserted in the horizontal direction. The main body 11 is not limited to a hollow resin-made floating body. For example, the inside of the floating body may be filled with foamed plastic such as styrofoam, or a metal hollow tank or the like that floats on water. It can be used as appropriate.

When the solar cell module 20 is mounted on the water float 10, it is preferable that the solar cell module 20 is mounted with the light receiving surface tilted with respect to the horizontal plane so as to increase the light receiving efficiency of sunlight. Therefore, the solar cell module 20 is mounted and fixed on the main body 11 of the water float 10 by using an inclined pedestal or the like which is an optional member separate from the main body 11 and its light receiving surface is inclined with respect to the horizontal plane. Structure may be used. Further, the main body 11 itself of the water float 10 may have a shape that supports the solar cell module 20 in an inclined manner. However, the mounting structure of the solar cell module 20 to the water float 10 is not an important structure in the present invention, and is not particularly limited to the above-mentioned structure.

As shown in FIG. 3, the floating solar power generation system 1 is formed by floating a plurality of floating floats 10 on which a solar cell module 20 is mounted on the water and connecting the plurality of floating floats 10 on the water. Has been done.

The connection between the water floats 10 is performed by overlapping the shaft holes 12A in the connecting portion 12 and inserting the rotary shaft member 30 through the shaft holes 12A. At this time, the rotating shaft member 30 is inserted into the shaft hole 12A of the connecting portion 12 so that the rotating shaft is substantially horizontal. Therefore, the connected water floats 10 can rotate in the vertical direction.

FIG. 4 is an exploded perspective view showing a more specific configuration of the rotary shaft member 30. The rotary shaft member 30 includes a bolt-shaped first member 31 and a nut-shaped second member 32. The first member 31 has a head portion 31A and a shaft portion 31B, and a male screw portion 31C is formed at the tip of the shaft portion 31B. A female screw portion 32A is formed on the second member 32.

When connecting the water float 10, the shaft portion 31B of the first member 31 is passed through the overlapping shaft hole 12A of the connecting portion 12, and the female screw portion 32A of the second member 32 is passed through the male screw portion 31C at the tip. Screw in. This makes it possible to prevent the rotary shaft member 30 from falling out of the shaft hole 12A.

In the water solar power generation system 1, since the connected water floats 10 can rotate in the vertical direction, even if the water floats 10 are displaced in the vertical direction due to the influence of waves or the like, the connecting portion 12 Can rotate to mitigate the effect of displacement of the position, and can prevent the connecting portion 12 from being damaged by an excessive load.

Further, when the water solar power generation system 1 is installed in a pond where water is drained regularly, the water solar power generation system 1 is placed at the bottom of the pond when the water is drained. The bottom is not always flat. In the water solar power generation system 1 of the present invention, even if the height of each water float 10 differs due to the uneven shape of the bottom of the pond, the connecting portion 12 rotates to mitigate the influence of the difference in height. This makes it possible to mount the water solar power generation system 1 on the bottom of the pond while suppressing an excessive load from being applied to the connecting portion 12. Therefore, the water solar power generation system 1 can be installed in a pond where water is drained regularly, and the installation conditions of the water solar power generation system 1 are relaxed.

[Embodiment 2]
In the water solar power generation system 1 according to the first embodiment, the connected water floats 10 are rotatably connected to each other in the vertical direction. However, during maintenance of the solar cell module 20, the connection points are rotated. It is preferable to regulate the movement and fix the relative positions of the connected water floats 10. At the time of maintenance of the solar cell module 20, an operator may get on the water float 10, but if the connecting portion of the water float 10 rotates freely in the vertical direction at this time, only the water float 10 on which the operator rides can be seen. Since it sinks or the water float 10 is out of balance and tilted, workability during maintenance is reduced. On the other hand, if the vertical rotation of the connecting portion of the water float 10 is restricted, the water float 10 on which the worker rides is suppressed from sinking or tilting, and the water float 10 is stabilized. Therefore, maintenance work is performed. Will be easier to do.

In the second to fifth embodiments, in the connection of the water floats 10, the movable state in which the water floats 10 can be rotated in the vertical direction and the relative positions of the water floats 10 in which the water floats 10 are connected are fixed by restricting the rotation in the vertical direction. A configuration that enables a fixed state to be obtained will be described.

FIG. 5 is a diagram showing a connecting structure of the water float 10 according to the second embodiment, and is a cross-sectional view (AA cross section in FIG. 3) showing a specific configuration of the shaft hole 12A and the rotary shaft member 30. be. Further, FIG. 5A shows a movable state, and FIG. 5B shows a fixed state.

In the second embodiment, as shown in FIG. 5, the shaft hole 12A has an elliptical cross section and has an engaging recess 12B at one end in the minor axis direction of the ellipse. The engaging recess 12B is formed in a groove shape along the axial direction of the shaft hole 12A. The rotary shaft inserted into the shaft hole 12A, that is, the shaft portion 31B of the rotary shaft member 30, has a shaft hole having a substantially circular cross section, and the engaging convex portion 31D formed along the axial direction. have. The diameter of the shaft portion 31B is substantially equal to the minor axis length of the ellipse of the shaft hole 12A. Further, the cross section of the engaging convex portion 31D is slightly smaller than the cross section of the engaging concave portion 12B.

In the movable state shown in FIG. 5A, the engaging convex portion 31D is located near the elliptical long axis of the shaft hole 12A. At this time, the engaging concave portion 12B and the engaging convex portion 31D do not engage with each other, and the connecting portion 12 in the water float 10 easily rotates with respect to the rotary shaft member 30. Therefore, the connected water floats 10 can rotate in the vertical direction.

On the other hand, in the fixed state shown in FIG. 5B, the engaging convex portion 31D is located on the elliptical short axis of the shaft hole 12A, and the engaging concave portion 12B and the engaging convex portion 31D engage with each other. By this coupling, the connection portion 12 in the water float 10 is restricted from rotating with respect to the rotation shaft member 30. Therefore, the rotation of the connected water floats 10 is also restricted, and the relative positions of the water floats 10 are fixed.

In the water solar power generation system 1 according to the second embodiment, the movable state and the fixed state can be easily switched by rotating the rotating shaft member 30 in the shaft hole 12A. Further, in order to facilitate the rotational operation of the rotary shaft member 30 at the time of state switching, for example, a handle, a knob, or the like may be provided on the head 31A of the first member 31 of the rotary shaft member 30. Further, the rotary shaft member 30 (for example, the head 31A) or the connecting portion 12 may be provided with a mark indicating whether the current state is a movable state or a fixed state. This mark may be a drawn display mark, or may be formed by a protrusion or a notch. For example, it suffices if the movable state and the fixed state can be distinguished by the direction of the display mark, whereby the movable state and the fixed state can be reliably switched, and the maintainability is improved.

In the fixed state of the second embodiment, it is sufficient that the fixed state can be maintained at least when the worker gets on the water float 10 during maintenance or the like, and for example, an excessive force more than that is suddenly connected. When it is caught in a place, it is desirable that the engaging concave portion 12B and the engaging convex portion 31D are disengaged and returned to the movable state. As a result, it is possible to prevent the connecting portion 12 from being damaged due to an excessive force applied to the connecting portion in the fixed state. As described above, in order to release the fixed state when an excessive force is applied to the connecting portion, for example, the sizes of the engaging recess 12B and the engaging protrusion 31D are set to appropriate dimensions. Further, when a predetermined load or more is applied to the connecting portion 12 within a range in which the connecting portion 12 is not damaged, the engaging convex portion 31D may be disengaged from the engaging concave portion 12B.

[Embodiment 3]
FIG. 6 is a diagram showing a connecting structure of the water float 10 according to the third embodiment, and is a cross-sectional view (AA cross section in FIG. 3) showing a specific configuration of the shaft hole 12A and the rotary shaft member 30. be. Further, FIG. 6A shows a movable state, and FIG. 6B shows a fixed state.

In the third embodiment, as shown in FIG. 6, the shaft hole 12A is a shaft hole having an elliptical cross section. The rotary shaft inserted into the shaft hole 12A, that is, the shaft portion 31B of the rotary shaft member 30, has a shaft hole having an elliptical cross section. The elliptical major axis of the shaft portion 31B is shorter than the elliptical major axis of the shaft hole 12A and slightly longer than the elliptical minor axis of the shaft hole 12A.

In the movable state shown in FIG. 6A, the rotation position of the rotary shaft member 30 is determined so that the elliptical major axis of the shaft portion 31B and the elliptical major axis of the shaft hole 12A are parallel to each other. At this time, a gap is formed between the shaft portion 31B of the rotary shaft member 30 and the shaft hole 12A, and the connecting portion 12 of the water float 10 easily rotates with respect to the rotary shaft member 30. Therefore, the connected water floats 10 can rotate in the vertical direction.

On the other hand, in the fixed state shown in FIG. 6B, the rotation position of the rotary shaft member 30 is determined so that the elliptical major axis of the shaft portion 31B and the elliptical minor axis of the shaft hole 12A are parallel to each other. At this time, the long shaft end portion of the shaft portion 31B comes into contact with the short shaft end portion (inner wall surface) of the shaft hole 12A, and friction occurs at this contact point. Due to this frictional force, the connecting portion 12 in the water float 10 is restricted from rotating with respect to the rotating shaft member 30. Therefore, the rotation of the connected water floats 10 is also restricted, and the relative positions of the water floats 10 are fixed.

Even in the fixed state of the third embodiment, when an excessive force is applied to the connecting portion, it is desirable that the fixed state is released and the movable state is restored. As described above, in order to release the fixed state when an excessive force is applied to the connecting portion, for example, the elliptical major axis of the shaft portion 31B and the elliptical minor axis of the shaft hole 12A are appropriately dimensioned. The frictional force acting in the fixed state may be appropriately adjusted. For example, when a load of a predetermined value or more is applied to the connecting portion 12 within a range in which the connecting portion 12 is not damaged, the force is less than or equal to the force applied between the elliptical major axis of the shaft portion 31B and the elliptical minor axis of the shaft hole 12A. By setting the frictional force, the fixed state can be released before the connecting portion 12 is damaged.

Further, in the configuration of FIG. 6, the cross sections of the shaft portion 31B and the shaft hole 12A are both elliptical, but the present invention is not limited to this, and the cross sections of the shaft portion 31B and the shaft hole 12A are, for example, FIG. It may be a polygon or the like as shown in 7. That is, a sufficient gap is formed between the shaft portion 31B and the shaft hole 12A in the movable state (see FIG. 7A), and the shaft portion 31B and the shaft hole 12A are in the fixed state (see FIG. 7B). Any shape may be used as long as it causes contact so as to generate a sufficient frictional force between them.

[Embodiment 4]
FIG. 8 is a diagram showing a connecting structure of the water float 10 according to the fourth embodiment, and is a plan view showing a specific configuration of the shaft hole 12A and the rotary shaft member 30. Further, FIG. 8A shows a movable state, and FIG. 8B shows a fixed state.

In the fourth embodiment, as shown in FIG. 8, the first member 31 of the rotary shaft member 30 is provided with the tapered portion 31E in place of the head portion 31A shown in FIG. The tapered portion 31E is a tapered shaft whose thickness gradually increases from one end to the other along the rotation axis, and the side closer to the shaft portion 31B is thinner and the side farther from the shaft portion 31B is thicker. .. Further, the cross section of the tapered portion 31E is not particularly limited, and may be, for example, circular or polygonal. Further, in the fourth embodiment, the shaft hole 12A is also a tapered hole in accordance with the tapered portion 31E, but in the present invention, the shape of the shaft hole 12A is limited to the shape matching the tapered portion 31E. Instead, for example, a hole having a certain width may be used. However, the two shaft holes 12A at the same connecting point are not the same size, and a continuous tapered surface is formed by the two shaft holes 12A.

In the movable state shown in FIG. 8A, the axial position of the rotary shaft member 30 is determined so that a gap is formed between the tapered portion 31E or the shaft portion 31B and the shaft hole 12A. At this time, the connecting portion 12 in the water float 10 easily rotates with respect to the rotating shaft member 30 due to the gap between the tapered portion 31E or the shaft portion 31B of the rotating shaft member 30 and the shaft hole 12A. Therefore, the connected water floats 10 can rotate in the vertical direction.

On the other hand, in the fixed state shown in FIG. 8B, the axial position of the rotary shaft member 30 is determined so that the tapered portion 31E and the shaft hole 12A come into contact with each other without a gap. At this time, friction due to contact between the tapered portion 31E and the shaft hole 12A (when the cross-sectional shape of the tapered portion 31E and the shaft hole 12A is circular) or engagement (when the cross-sectional shape of the tapered portion 31E and the shaft hole 12A is polygonal). In the case of) occurs. This frictional force (or engagement) restricts the rotation of the connecting portion 12 in the water float 10 with respect to the rotating shaft member 30. Therefore, the rotation of the connected water floats 10 is also restricted, and the relative positions of the water floats 10 are fixed.

In the configuration of the fourth embodiment, the movable state and the fixed state are switched by changing the axial position of the rotating shaft member 30. Then, in order to position the rotational shaft member 30 in the axial direction, a positioning protrusion 13 is provided on one of the connected water floats 10. The positioning protrusion 13 is arranged in parallel with the connecting portion 12 and has a shaft hole 13A through which the shaft portion 31B of the rotary shaft member 30 is inserted.

The rotary shaft member 30 is attached by passing the shaft portion 31B of the first member 31 through the shaft hole 13A of the positioning protrusion 13 and screwing the second member 32 to the tip thereof. At this time, if the female screw portion 32A of the second member 32 is screwed shallowly into the male screw portion 31C of the first member 31, it can be in a movable state, and if it is screwed deeply, it can be in a fixed state.

Further, in the configuration of FIG. 8, the tapered portion 31E of the rotary shaft member 30 is inserted into the shaft hole 12A of the connecting portion 12 in both the movable state and the fixed state, but the present invention is limited thereto. is not. For example, as shown in FIG. 9, in the first member 31 of the rotary shaft member 30, the thick shaft portion 31F is provided on the opposite side of the tapered portion 31E from the shaft portion 31B, and the thick shaft portion 31F is connected in the fixed state. It may be configured to be fitted into the shaft hole 12A of the portion 12. Further, in the configuration shown in FIGS. 8 and 9, the movable state and the fixed state can be distinguished by the position of the rotary shaft member 30 when the connecting portion 12 and the positioning protrusion 13 are viewed from above. For example, it can be distinguished by the position where the tapered portion 31E and the thick shaft portion 31F are inserted into the shaft hole 12A of the connecting portion 12, and whether the end portion of the first member 31 protrudes from the second member 32. It can be distinguished by whether or not it is present.

[Embodiment 5]
10A and 10B are cross-sectional views (AA cross-sections in FIG. 3) showing a connected structure of the water float 10 according to the fifth embodiment, FIG. 10A is a movable state, and FIG. 10B is a fixed state. Is shown.

In the fifth embodiment, as shown in FIG. 10, both the shaft portion 31B of the rotary shaft member 30 and the shaft hole 12A of the connecting portion 12 are circular. Therefore, unlike the above-described embodiments 2 to 4, the fifth embodiment does not have a structure that can be fixed by the rotating shaft member 30 and the shaft hole 12A.

Instead, in the fifth embodiment, the locking hole 12C is provided in the connecting portion 12. The lock hole 12C is formed at a position where the two connecting portions 12 to be connected overlap each other when they are arranged linearly.

In the movable state shown in FIG. 10A, nothing is inserted into the lock hole 12C, and the connecting portions 12 are uniaxially connected by the rotating shaft member 30. Therefore, the connecting portion 12 of the water float 10 easily rotates with respect to the rotating shaft member 30. Therefore, the connected water floats 10 can rotate in the vertical direction.

On the other hand, in the fixed state shown in FIG. 10B, the lock pin 33 is inserted into the lock holes 12C that are overlapped with each other. In this case, the connecting portions 12 are biaxially connected by the rotating shaft member 30 and the lock pin 33. As a result, the rotation of the connecting portion 12 in the water float 10 is restricted. Therefore, the rotation of the connected water floats 10 is also restricted, and the relative positions of the water floats 10 are fixed.

Even in the fixed state in the fifth embodiment, when an excessive force is applied to the connecting portion, it is desirable that the fixed state is released and the movable state is restored. In the present embodiment, in order to release the fixed state when an excessive force is applied to the connecting portion, the locking portion 12 is locked when a predetermined load or more is applied to the connecting portion 12 within a range where the connecting portion 12 is not damaged. The lock pin 33 inserted in the hole 12C may be broken. By doing so, the fixed state is released when the lock pin 33 is broken, and it is possible to prevent the connecting portion 12 itself from being damaged by the load.

[Embodiment 6]
In the water solar power generation system 1 according to the first embodiment, a configuration in which two connecting portions 12 are provided so as to project laterally from the side surface by two from each corner of the main body portion 11 of the water float 10 is exemplified. There is. However, in the present invention, the number of formed connecting portions 12, the formed portion, and the protruding direction are not limited to this example. In the sixth embodiment, a modified example in which the number of formed lines, the formed portion, and the protruding direction of the connecting portion 12 are different from those of the first embodiment will be described.

FIG. 11 is an example of the floating solar power generation system according to the sixth embodiment, and is a plan view showing a schematic configuration of the floating solar power generation system 2. In the water solar power generation system 2 shown in FIG. 11, one connecting portion 12 is provided so as to project laterally from substantially the center of each side surface of the main body portion 11 of the water float 10. As described above, the number and location of the connecting portions 12 may be different from those of the water solar power generation system 1 shown in FIG.

FIG. 12 is another example of the floating solar power generation system according to the sixth embodiment, and is a plan view showing a schematic configuration of the floating solar power generation system 3. In the water solar power generation system 3 shown in FIG. 12, one connecting portion 12 is provided so as to project diagonally from each corner of the main body portion 11 of the water float 10 with respect to the side surface. As described above, the protruding direction of the connecting portion 12 may be different from that of the water solar power generation system 1 shown in FIG.

[Embodiment 7]
The water solar power generation system 1 according to the first embodiment illustrates a configuration in which only one type of water float, that is, the water float 10 is connected. In the seventh embodiment, a modified example in which a water solar power generation system is configured by combining a plurality of types of water floats will be described.

FIG. 13 is an example of the floating solar power generation system according to the seventh embodiment, and is a plan view showing a schematic configuration of the floating solar power generation system 4. The water solar power generation system 4 shown in FIG. 13 is configured by connecting a water float 10 on which the solar cell module 20 is mounted and a passage float 40 on which the solar cell module 20 is not mounted. The passage float 40 is used as a passage for workers during maintenance.

In the water solar power generation system 4, the passage float 40 is also provided with a connecting portion 12 similar to the water float 10, and the water float 10 and the passage float 40 are connected by using the connecting portion 12 and the rotary shaft member 30. be able to. In the example of FIG. 13, the passage float 40 is connected only to the water float 10 by the connecting portion 12, but the present invention is not limited to this, and the passage floats 40 are connected to each other by the connecting portion 12. It may have been done.

As described above, the support device for water installation of the present invention is a support device for water installation of a solar cell module connected to each other on the water to form a water solar power generation system, and the support device for water installation is the support device for water installation. A main body portion that is a floating body on which a solar cell module is placed and a connecting portion that is provided so as to project from the main body portion and has a shaft hole are provided. By stacking the holes and inserting the rotary shaft member into both of the stacked shaft holes in the horizontal direction, the connecting portion rotates around the rotary shaft member and is rotatably connected in the vertical direction. It is characterized by.

According to the above configuration, the connection between the support devices for water installation is performed by overlapping the shaft holes in the connecting portion and inserting the rotary shaft member into the shaft holes. At this time, the rotating shaft member is inserted into the shaft hole of the connecting portion so that the rotating shaft is horizontal. Therefore, the connected support devices for water installation can rotate in the vertical direction. In the water solar power generation system, the connected support devices for water installation can rotate in the vertical direction, so that even if the position is displaced in the vertical direction due to the influence of waves, an excessive load is applied to the connected part. It is possible to suppress the hooking and prevent the connecting portion from being damaged by an excessive load.

Further, when the water solar power generation system is installed in a pond where water is drained, the water solar power generation system can be easily adapted to the shape of the pond bottom which is not flat when the water is drained. For this reason, it becomes possible to install the floating photovoltaic power generation system in a pond where drainage is performed, and the installation conditions of the floating photovoltaic power generation system are relaxed.

Further, in order to solve the above-mentioned problems, in the water-based photovoltaic power generation system of the present invention, the connected portions of the water-mounted support devices to be connected rotate around the rotating shaft member to rotate in the vertical direction. It is possible to switch between a movable state in which movement is possible and a fixed state in which the relative positions of the connected support devices for water installation are fixed by restricting the rotation of the connecting portion around the rotating shaft member. It is a feature.

According to the above configuration, when an operator gets on the support device for water installation during maintenance of the solar cell module, the relative position between the support devices for water installation is fixed in the fixed state. Since the support device for water installation on which the worker is riding is prevented from sinking or tilting and is stable, maintenance work can be easily performed.

Further, in the water solar power generation system, an engaging concave portion is formed in the shaft hole, an engaging convex portion is formed in the rotating shaft member, and the movable state and the fixed state are the shaft hole. It is possible to switch by rotating the rotary shaft member within the movable state, and the engaging convex portion does not engage with the engaging concave portion in the movable state, and the engaging convex portion is engaged with the engaging concave portion in the fixed state. By engaging, the connecting portion can be configured to be rotationally restricted with respect to the rotating shaft member.

According to the above configuration, the movable state and the fixed state can be switched by rotating the rotary shaft member in the shaft hole, and the switching can be easily performed. In addition, if the sizes of the engaging concave portion and the engaging convex portion are set to appropriate dimensions so that the fixed state is released when an excessive force is applied to the connecting portion, the excessive force is applied to the connecting portion. It is possible to prevent damage to the support device for water installation when it is hung.

Further, in the water solar power generation system, the movable state and the fixed state can be switched by rotating the rotating shaft member in the shaft hole, and in the movable state, the shaft hole and the rotating shaft member can be switched. In the fixed state, the shaft hole and the rotary shaft member are brought into contact with each other, and the rotation is restricted by the frictional force between the connecting portion and the rotary shaft member. Can be done.

According to the above configuration, the movable state and the fixed state can be switched by rotating the rotary shaft member in the shaft hole, and the switching can be easily performed. In addition, if the frictional force acting in the fixed state is adjusted appropriately so that the fixed state is released when an excessive force is applied to the connection point, it is installed on the water when an excessive force is applied to the connection point. It is possible to prevent damage to the support device.

Further, in the water solar power generation system, the rotating shaft of the rotating shaft member is provided with a tapered portion whose thickness gradually increases from one end side to the other end side. The fixed state can be switched by moving the rotating shaft member along the axial direction in the shaft hole, and in the movable state, a gap is provided between the shaft hole and the rotating shaft member. In the fixed state, the shaft hole and the rotary shaft member may be brought into contact with or engaged with each other, and the rotation may be restricted by the frictional force or the engagement between the connecting portion and the rotary shaft member.

According to the above configuration, the movable state and the fixed state can be switched by moving the rotating shaft member along the rotating shaft in the shaft hole, and the switching can be easily performed.

Further, in the water solar power generation system, a lock hole is provided in the connecting portion, nothing is inserted into the lock hole in the movable state, and the lock hole is locked to the lock hole overlapped with each other in the fixed state. The pin is inserted, and the connecting portion can be restricted from rotating with respect to the rotating shaft member by the lock pin.

According to the above configuration, the movable state and the fixed state can be switched by inserting and removing the lock pin into the lock hole, and the switching can be easily performed.

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention.

This international application claims priority based on Japanese Patent Application No. 2017-174666 filed on September 12, 2017, with reference to the entire contents of Japanese Patent Application No. 2017-174666. Incorporated in this international application.

1 to 4 Water system 10 Water float 11 Main body 12 Connecting part 12A Shaft hole 12B Engagement recess 12C Lock hole 13 Positioning protrusion 13A Shaft hole 20 Solar cell module 30 Rotating shaft member 31 First member 31A Head 31B Shaft 31C Male thread 31D Engagement convex 32 Second member 32A Female thread 33 Lock pin 40 Passage float

Claims (5)

It is a water solar power generation system that is configured by connecting multiple support devices for water installation to each other on the water.
The support device for water installation includes a main body portion which is a floating body on which a solar cell module is placed, and a connecting portion which is provided so as to project from the main body portion and has a shaft hole.
In the water-mounted support devices, the shaft holes of the connecting portion are overlapped with each other, and the rotating shaft member is inserted into both of the overlapped shaft holes in the horizontal direction so that the connecting portion is around the rotating shaft member. It rotates with and is rotatably connected in the vertical direction.
The water-mounted support devices to be connected are in a movable state in which the connecting portion rotates around the rotating shaft member and can rotate in the vertical direction, and the connecting portion rotates around the rotating shaft member. A water-based photovoltaic power generation system characterized in that it can be switched between a fixed state in which the relative positions of the regulated and connected support devices for water-mounted installation are fixed. The water-based photovoltaic power generation system according to claim 1.
An engaging recess is formed in the shaft hole, and an engaging convex portion is formed in the rotating shaft member. In the movable state and the fixed state, the rotating shaft member is rotated in the shaft hole. Can be switched with
In the movable state, the engaging convex portion does not engage with the engaging concave portion, and in the fixed state, the engaging convex portion engages with the engaging concave portion so that the connecting portion engages with the rotating shaft member. A floating photovoltaic system characterized by rotation restrictions. The water-based photovoltaic power generation system according to claim 1.
The movable state and the fixed state can be switched by rotating the rotating shaft member in the shaft hole.
In the movable state, a gap is provided between the shaft hole and the rotary shaft member, and in the fixed state, the shaft hole and the rotary shaft member are brought into contact with each other, and between the connecting portion and the rotary shaft member. A floating solar power generation system characterized by rotation regulation by the frictional force of. The water-based photovoltaic power generation system according to claim 1.
The rotating shaft of the rotating shaft member is provided with a tapered portion whose thickness gradually increases from one end side to the other end side.
The movable state and the fixed state can be switched by moving the rotary shaft member along the axial direction in the shaft hole.
In the movable state, a gap is provided between the shaft hole and the rotary shaft member, and in the fixed state, the shaft hole and the rotary shaft member are brought into contact with or engaged with each other, and the connecting portion and the rotary shaft member are contacted or engaged with each other. A water solar power system characterized by rotation regulation by frictional force or engagement with. The water-based photovoltaic power generation system according to claim 1.
A lock hole is provided in the connecting portion, and the connecting portion is provided with a lock hole.
In the movable state, nothing is inserted into the lock hole, and in the fixed state, a lock pin is inserted into the lock holes that are overlapped with each other, and the connecting portion is restricted from rotating with respect to the rotation shaft member by the lock pin. A floating solar power generation system characterized by this.

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