JP7217567B1 - solar tracker - Google Patents

Abstract

A solar tracking device capable of stopping the shaking even if a frame shakes due to turbulence or the like is provided.
A solar tracking device includes a frame for supporting a solar panel, a north-south rotation mechanism having an elevation rotation axis for rotating the frame in the north-south direction, and an azimuth angle for rotating the frame in the east-west direction. An east-west rotation mechanism having a rotation shaft and a support column are provided. The north-south rotation mechanism adjusts the angle of the panel surface of the solar panel in the north-south direction, and the east-west rotation mechanism adjusts the angle of the panel surface of the solar panel in the east-west direction. The elevation rotation axis and the azimuth rotation axis are in a torsional positional relationship, the frame is held by the truss structures of the north-south rotation mechanism and the east-west rotation mechanism, and brakes automatically stop the oscillation when the frame shakes. A solar tracker further equipped with a shoe.
[Selection drawing] Fig. 1

Description

The present invention relates to a solar tracker with a solar panel.

In the conventional solar power generation tracking type system (altitude and altazimuth system), the solar altitude axis and the solar azimuth axis intersect each other at the axis center, and currently, this system is mainly used. On the other hand, two axes are twisted and intersected (each axis of both axes intersects without penetrating each bearing as a single axis) to rotate the surface of the solar panel (solar panel). A type in which the position can be freely selected (Patent Document 1) was devised as a totally new tracking system facility based on a principle different from the conventional one (CROAS type).

Each of the two east-west axes and the north-south axis of the mounting frame of the CROAS tracking solar power generation device does not pass through the respective bearings as a single through-shaft, but virtually connects the two bearings as a single shaft. Since it is a through-shaft rotation mechanism, the positions of these bearings can be freely selected, so that the two shafts can be twisted and crossed at right angles. Therefore, there is a feature that the distance (δ) from the intersection of two virtually linear through-shafts can be freely selected and twisted to cross each other.

Using this feature, in the assembly process, the CROAS type solar panel can be installed flat on the frame that supports the panel and then attached to the tracking mount. On top, the solar panel and the attachment to the support frame can be assembled easily and quickly. In addition, by carrying out this assembly process in parallel with the assembly of the tracking mount and the construction of the struts, the construction period can be shortened, and the construction cost can be greatly reduced.

Patent No. 6535402

However, in the structure described in Patent Document 1, the columns supporting the bearings of the north-south axis (east-west bearing columns) and the span portion of the panel support frame are connected only along the north-south axis. It can sway unstably, and especially when turbulence occurs in strong winds, the panel surface vibrates with a large deviation in both the east and west directions.

As described above, in the conventional device, for example, when turbulence occurs, the frame that supports the solar panel shakes back and forth and left and right. Moreover, the tremors did not subside.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a solar tracking device capable of stopping the shaking even if the frame shakes due to turbulence or the like.

In order to achieve the above objects, the present invention provides a solar tracking device that includes one or more solar panels and adjusts the angle of the panel surface of the solar panels to follow the movement of the sun,
a frame supporting the solar panel;
a north-south rotation mechanism having an elevation rotation shaft with an east-west direction for rotating the frame in the north-south direction;
an east-west rotation mechanism having an azimuth rotation axis whose axial direction is the north-south direction for rotating the frame in the east-west direction;
and a pillar that supports the frame,
By the north-south rotation mechanism, the frame and the solar cell panel are integrally rotated in the north-south direction about the elevation rotation axis, so that the panel surface of the solar cell panel supported by the frame is rotated. The angle in the north-south direction is adjusted,
The frame and the solar cell panel are integrally rotated in the east-west direction about the azimuth rotation axis by the east-west rotation mechanism, so that the panel surface of the solar cell panel supported by the frame. The angle in the east-west direction of is adjusted,
The elevation rotation axis and the azimuth rotation axis are in a torsion positional relationship,
The north-south rotation mechanism and the east-west rotation mechanism each have a truss structure, and the frame is held by the truss structure,
Provided is a solar tracking device, further comprising a brake shoe for automatically stopping shaking of the frame when the frame shakes.

Thus, in the solar tracking device of the present invention, the elevation rotation axis and the azimuth rotation axis are in a torsional positional relationship and are not orthogonal (i.e., do not intersect three-dimensionally). Both of the rotating mechanisms allow the formation of a truss structure as the mechanism for rotating and holding the frame. And since the frame is actually held by such two truss structures, it is possible to hold the frame (solar panel) stably. Therefore, breakage due to wind load can be suppressed.

In addition, especially because it is equipped with the above-mentioned brake shoes, even if the solar panel and the frame supporting it shake due to turbulence during strong winds, the brake shoes minimize the shaking, And it can be stopped automatically and immediately. Thereby, the load on the frame rotation mechanism (east-west rotation mechanism, north-south rotation mechanism) can be reduced.

Further, the north-south rotation mechanism is
A central horizontal rod that penetrates the column and can swing in the east-west direction, a north-south rotation connecting member that connects the central horizontal rod and the frame, and a north-south rotation that connects the central horizontal rod and the frame. and an actuator,
The frame is rotated in the north-south direction by expansion and contraction of the north-south rotation actuator,
The truss structure in the north-south rotation mechanism is
It is formed by three points: a connecting portion between the connecting member for north-south rotation and the frame, a connecting portion between the center horizontal bar and the actuator for north-south rotation, and a connecting portion between the actuator for north-south rotation and the frame. can be done.
Further, the east-west rotation mechanism is
an east-west rotation member having one end rotatably connected to the support; an east-west rotation connection member connecting the other end of the east-west rotation member to the frame; the other end of the east-west rotation member and the support. and an actuator for east-west rotation that connects the
The frame is rotated in the east-west direction by expansion and contraction of the east-west rotation actuator,
The truss structure in the east-west rotation mechanism is
It is formed by three points: a connection portion between the east-west rotation member and the support, a connection portion between the support support and the east-west rotation actuator, and a connection portion between the east-west rotation actuator and the east-west rotation member at the other end side. can be

With such devices, the expansion and contraction of each actuator can effectively rotate the frame (and the solar cell panel) in the north-south direction and the east-west direction. Moreover, the truss structure can be formed more reliably, and the frame can be held more firmly.

the strut is cylindrical and the central crossbar extends through the strut through two opposing openings formed in the strut;
The brake shoe
One or more first brake plates are fixedly arranged on at least one of the inner and outer peripheral surfaces of the cylindrical support and protrude from the support along the central horizontal bar. and
When the frame is shaken, contact friction between opposing surfaces of the first brake plate and the central horizontal bar may stop the frame connected to the central horizontal bar from shaking.
Further, the brake shoe
a second brake plate fixedly arranged on the north-south rotation coupling member;
The frame is rotatably connected to the north-south rotation connecting member via the second brake plate,
The vibration of the frame may be stopped by contact friction between opposing surfaces of the second brake plate and the frame when the frame is swayed.

With brake shoes like these, it is possible to easily stop the shaking of the frame automatically.

Also, the azimuth rotation axis may pass through the apex of the column.

The positional relationship between the azimuth rotation axis and the vertex of the strut can be the above relationship.

As described above, according to the present invention, the solar panel can be stably held, and the destruction of the device due to the wind load can be effectively prevented. In addition, even if the solar panel and the frame sway due to turbulence or the like, the swaying can be minimized and the system can be automatically stopped instantly.

1 is a perspective view from below showing an example of a heliostat device of the present invention; FIG. FIG. 4 is a partially enlarged view showing an example of an east-west rotation mechanism and a north-south rotation mechanism; FIG. 2 is an explanatory top view showing an example of the configuration of a solar panel; It is an explanatory view showing an example of a brake shoe (east-west brake shoe). It is an explanatory view showing an example of the east-west brake shoe seen from the east side. It is an explanatory view showing an example of the east-west brake shoes seen from the south side. It is explanatory drawing which shows the example at the time of fixing a 1st brake plate to the internal peripheral surface of a support|pillar. It is an explanatory view showing an example of a brake shoe (north-south brake shoe).

Hereinafter, the present invention will be described in detail as an example of embodiments with reference to the drawings, but the present invention is not limited thereto.
In the conventional solar tracking device disclosed in Patent Literature 1, the solar panel and the frame supporting the solar panel continue to sway due to strong winds and the like.
The present inventors have extensively studied a structure that can stop the movement around both axes (elevation rotation axis, azimuth rotation axis) by braking with frictional force in the above case. The inventors have also found that if brake shoes are provided, it is possible to completely and automatically stop unstable frame shaking due to turbulence in strong winds, etc., and have completed the present invention. In addition, the inventors have made intensive studies on the dynamic relationship in which braking performance is extremely strong, and have found an effective form of the brake shoe.

1 and 2 show an example of the solar tracking device (heliostat device) of the present invention.
FIG. 1 is a perspective view from the bottom side of the device. FIG. 2 is a partially enlarged view of FIG. 1, showing an east-west rotation mechanism and a north-south rotation mechanism.

As shown in FIGS. 1 and 2, a solar tracking device 1 (hereinafter also simply referred to as device 1) of the present invention includes a solar battery panel 2, a frame 3 supporting the solar battery panel 2, and the frame 3 extending north and south. A north-south rotation mechanism 5 having an elevation rotation shaft 4 whose axial direction is the east-west direction for rotating the frame 3 in the east-west direction, and an azimuth rotation shaft 6 whose axial direction is the north-south direction for rotating the frame 3 in the east-west direction. It has a rotation mechanism 7 and a support 8 that supports the frame 3 . With the north-south rotation mechanism 5 and the east-west rotation mechanism 7, the angle of the solar cell panel 2 can be adjusted to follow the movement of the sun. Furthermore, a brake shoe 30 is provided.
The configuration of each part will be described in detail below, but these configurations are examples and are not particularly limited.

(solar panel, frame, strut)
One or more solar cell panels 2 may be provided, and the number and size thereof are not particularly limited. An example of the solar cell panel 2 is shown in FIG. 3 (top view). Here, four rectangular solar cell panels 2 are provided. The combination of the four solar cell panels 2 forms a square shape as a whole.
Note that FIG. 1 is a perspective view from below as described above, and the back surface of the solar cell panel 2 is shown. The opposite side (surface) of this back surface is shown in FIG. 3, which is the panel surface 2A that actually receives the sunlight.

The frame 3 includes, for example, two north-south frame members 9 extending in the north-south direction and four east-west frame members 10 extending in the east-west direction. These can be, for example, prismatic members. The frame 3 supports the solar panel 2 from below.
Therefore, the north-south rotation mechanism 5 (east-west rotation mechanism 7) rotates the frame 3 and the solar cell panel 2 integrally in the north-south direction (east-west direction) about the elevation rotation shaft 4 (azimuth rotation shaft 6) as the rotation axis. By rotating, the angle in the north-south direction (east-west direction) of the panel surface 2A of the solar panel 2 supported by the frame 3 is adjusted.

Further, although the support 8 is not particularly limited, it may be cylindrical (support main body 11), for example. In addition, two openings 12 are provided in the outer peripheral surface on the east and west sides so that a central horizontal bar 21, which will be described in detail later, can pass through.

(East-west rotation mechanism)
The east-west rotation mechanism 7 includes, for example, an east-west rotation member 13 having one end rotatably connected to the post 8, an east-west rotation connection member 14 connecting the other end of the east-west rotation member 13 and the frame 3, It has an east-west rotation actuator 15 that connects the other end side of the east-west rotation member 13 and the column 8 .
More specifically, in the example shown in FIGS. 1 and 2, the east-west rotation connecting member 14 is connected to the central horizontal rod 21, and the other end side of the east-west rotating member 13 is connected to the central horizontal rod 21. ing. Therefore, the other end side of the east-west rotation member 13 is connected to the frame 3 via the central horizontal bar 21 and the east-west rotation connection member 14 .
In this example, the azimuth rotation axis 6 passes through the vertex of the support 8 (that is, the connecting portion between one end of the east-west rotation member 13 and the support 8).

With such a mechanism, the east-west rotation member 13 rotates in the east-west direction about the azimuth rotation axis 6 by the expansion and contraction of the east-west rotation actuator 15 . At the same time, the frame 3, which is connected to the east-west rotation member 13 via the east-west rotation connection member 14, rotates together in the east-west direction.

Moreover, the east-west rotation mechanism 7 forms a truss structure for holding the frame 3 in the rotation plane in the east-west direction with the configuration as described above. Specifically, as shown in FIG. 2, a connecting portion O between the east-west rotating member 13 and the column 8, a connecting portion P between the column 8 and the east-west rotating actuator 15, the east-west rotating actuator 15 and the east-west rotating member 13, and others. A truss structure OPQ is formed by three points of the connecting portion Q on the end side.

In the example shown in FIGS. 1 and 2, one east-west rotating mechanism 7 is provided on the east and south sides, and one on the west and north sides. However, the present invention is not limited to this, and it is also possible to provide one on either the east or west side, one on the west and south sides, or one on the east and north sides, respectively.

(North-south rotation mechanism)
Next, the north-south rotation mechanism 5 includes, for example, a central horizontal rod 21 that penetrates the column 8 and can swing in the east-west direction; It has a north-south rotation actuator 23 that connects the horizontal bar 21 and the frame 3 .
1 and 2, the connecting member 22 for north-south rotation is the same member as the connecting member 14 for east-west rotation. However, it is not limited to this, and a separate member is also possible.
The north-south rotation actuator 23 may be directly connected to the central horizontal rod 21, but as described above, the north-south rotation connecting member 22 (the east-west rotation connecting member 14) is connected to the central horizontal rod 21. Therefore, the north-south rotation actuator 23 can be directly connected to the north-south rotation member 22 and connected to the central horizontal rod 21 via the north-south rotation member 22 .
Also, the elevation rotation shaft 4 passes through the connecting portion between the frame 3 and the connecting member 22 for north-south rotation.
With such a mechanism, the frame 3 can be rotated in the north-south direction about the elevation rotation shaft 4 by the expansion and contraction of the north-south rotation actuator 23 .

Moreover, the north-south rotation mechanism 5 forms a truss structure for holding the frame 3 in the rotation plane in the north-south direction with the configuration described above. Specifically, as shown in FIG. 2, a connecting portion R between the north-south rotation connecting member 22 and the frame 3 (north-south frame member 9), a connecting portion S between the central horizontal bar 21 and the north-south rotation actuator 23, a north-south rotation A truss structure RST is formed by the actuator 23 and the connecting portion T of the frame 3 (north-south frame members 9).

In the example shown in FIGS. 1 and 2, one north-south rotation mechanism 5 is provided on each of the east and west sides. However, it is not limited to this, and only one may be provided on either the east or west side.

As described above, both the north-south rotation mechanism 5 and the east-west rotation mechanism 7 have truss structures OPQ and RST for holding the frame 3. This is because the rotation mechanism 7 and the azimuth rotation axis 6 are in a torsion positional relationship (do not intersect three-dimensionally).
By setting such a positional relationship, a stable structure of truss structure can be easily formed in both rotating mechanisms at the same time. As a result, the frame 3 and the solar panel 2 can be held extremely stably. Therefore, even if the wind blows, the frame 3 can be firmly held, and it is possible to effectively prevent the members of the device 1 from being destroyed by the wind load.

Regarding the east-west rotation actuator 15 and the north-south rotation actuator 23, although there is no particular limitation on the direction in which they are arranged, it is preferable that they be arranged so that the extendable rod portion faces downward. This is because it is possible to effectively prevent rainwater or the like from entering each actuator and causing a failure.

(brake shoe)
Next, the brake shoe 30 will be explained. The brake shoe 30 is for automatically stopping the shaking of the frame 3 (and the solar cell panel 2) when the shaking occurs. Examples of the brake shoes 30 include those provided on the column 8 (east-west brake shoes) and those provided on the north-south rotation connecting member 22 (which is also the east-west rotation connecting member 14 here) (north-south brake shoes).

First, the former east-west brake shoe will be described.
FIG. 4 shows an example of an east-west brake shoe (perspective view from the southeast). 5 is an explanatory view seen from the east side, and FIG. 6 is an explanatory view seen from the south side.
As described above, the cylindrical column 8 has a column body 11 provided with two openings 12 through which the central horizontal rod 21 extends in the east-west direction.
The brake shoe 30 has a first brake plate 31 fixedly arranged on at least one of the inner and outer peripheral surfaces of the strut 8 . This first brake plate 31 protrudes from the strut 8 along a central crossbar 21 passing through the strut 8 .
Although one first brake plate is arranged on each of the south side and the north side here, it is not limited to this, and may be arranged on either one of the south side and the north side. Placing them on both the north and south sides can more effectively stop the shaking of the frame 3 .

Although the first brake plate arranged on the south side will be mainly described below, the first brake plate arranged on the north side is substantially the same except that the direction and the like are different.
The first brake plate 31 on the south side has two flanges 32 projecting southward on the east side and the west side (illustration of the flanges 32 is omitted in FIG. 4). The first brake plate 31 penetrates the column 8 in the east-west direction through the two openings 12 of the column 8, and is fixedly positioned between the central horizontal bar 21 and the edge of the opening 12. there is Specifically, the two flanges 32 described above are fixed to the outer peripheral surface 33 (the east-side outer peripheral surface and the west-side outer peripheral surface) of the column body 11 using screws or the like.

As described above, the central horizontal bar 21 is connected to the frame 3 via the north-south rotation connecting member 22 (here, it is also the east-west rotation connecting member 14), and when the frame 3 swings, the central horizontal bar 21 also swings. . At this time, the presence of the brake shoe 30 (first brake plate 31) immediately reduces the shaking of the central horizontal rod 21 due to the contact friction between the facing surfaces of the first brake plate 31 and the central horizontal rod 21. can be stopped. As a result, the swinging of the frame 3 connected to the central horizontal bar 21 can be stopped.

Although the size and length of the first brake plate 31 are not particularly limited, they can be appropriately adjusted according to the size of the central horizontal bar 21, etc., and the area facing the central horizontal bar 21 (contact area) is maximized. It is preferable to use something like Furthermore, a sufficient contact area can be obtained even when the central horizontal bar 21 (furthermore, the panel surface 2A of the solar cell panel 2) is rotated and tilted at a maximum angle (±45° with respect to the horizontal plane). is preferred.
When the flanges 32 are attached and fixed to the outer peripheral surface on the east side and the outer peripheral surface on the west side of the column body 11, the size of the gap between the first brake plate 31 and the central horizontal bar 21 is adjusted by adjusting the fixing position. can do. Even if the positional relationship between the first brake plate 31 and the central horizontal rod 21 is such that there is a slight gap in a windless state, the first brake plate 31 and the central horizontal rod may be separated from each other by shaking with twists due to turbulence or the like. 21 come into surface contact with each other.
Alternatively, the contact pressure can be adjusted by bringing the first brake plate 31 and the central horizontal bar 21 into surface contact from the beginning when fixing them.
By these adjustments, it is possible to adjust the degree of frictional force (brake) when shaking occurs.

As another fixing method, FIG. 7 shows an example in which the first brake plate 31 is fixed to the inner peripheral surface of the cylindrical strut 8 . FIG. 7 is an explanatory diagram of the vicinity of the opening 12 viewed from above. Again, only the first brake plate 31 on the south side will be described, but it is not limited to this and can be arranged on the north side as well.
The first brake plate 31, which passes through the opening 12 and is positioned between the central horizontal bar 21 and the strut body 11, is a projection protruding toward the inner peripheral surface 34 of the strut body 11 inside the cylindrical strut 8. and is fixed to the inner peripheral surface 34 with screws or the like at the convex portion.

Next, the north and south brake shoes will be explained.
FIG. 8 shows an example of north-south brake shoes.
The brake shoe 30 here has a second brake plate 35 fixedly arranged on the connecting member 22 for north-south rotation. The frame 3 is rotatably connected to the north-south rotation connection member 22 via the second brake plate 35 .
More specifically, the second brake plate 35 has a flange 36, and the flange 36 is fixed to the north-south rotation coupling member 22 with screws or the like.
When the frame 3 shakes, the presence of the brake shoe 30 (second brake plate 35) immediately reduces the shaking of the frame 3 by contact friction between the facing surfaces of the second brake plate 35 and the frame 3. can be stopped.

The size and length of the second brake plate 35 are not particularly limited. The size of the frame 3 can be appropriately adjusted according to the size of the frame 3, and it is preferable to use a material that makes the area facing the frame 3 (contact area) as large as possible. Furthermore, it is preferable that a sufficient contact area can be obtained even when the frame 3 (furthermore, the panel surface 2A of the solar cell panel 2) is rotated and tilted at the maximum angle (±45° with respect to the horizontal plane). .
In addition, the second brake plate 35 is fixed to the connecting member 22 for north-south rotation in surface contact, and the second brake plate 35 and the frame 3 are also connected in surface contact. can be adjusted.
This makes it possible to adjust the degree of frictional force (brake) when shaking occurs.

With the apparatus 1 of the present invention as described above, even if the solar panel 2 and the frame 3 shake due to the occurrence of turbulent flow during strong winds due to the presence of the brake shoe 30, the shaking is minimized. It is very convenient because it can be suppressed and automatically stopped immediately. Therefore, the load on each rotation mechanism of the frame 3 (particularly, the east-west rotation actuator 15 and the north-south rotation actuator 23) can be reduced, and the occurrence of failure can be prevented.

The effects obtained with the device 1 of the present invention will be described in more detail below.
Turbulence does not occur in windless conditions. If the wind is light, the frictional force is small, but there is almost no shaking. In addition, when the wind is strong enough to generate turbulence, it becomes imbalanced in the direction of swaying and a strong wind load is applied. In addition, (especially when the size of the first brake plate 31 and the second brake plate 35 is large, the contact surface is large), braking by frictional force is possible without generating a local shear force at the contact portion of the brake shoe. At the moment the brake is applied, the balance of the rotation axis center moment is lost and the swing direction is reversed. As a result, the reversal is repeated and the pendulum motion (swaying) is repeated within a certain amplitude range, but even so, it stops extremely quickly compared to the conventional device.

In other words, even if a strong wind load is applied due to turbulent flow due to strong winds, the frictional force with the structure in contact with the brake shoe will brake and damage it within the range where local shear force is not generated at the contact part of the brake shoe. Although the solar panel once sways within a certain range without causing undue damage, the amplitude of the swaying can be minimized, and the system can be automatically stopped in a short time.

Since the two actuators attached to the basic structure of CROAS (Patent Document 1) have balanced central moments of both axes, the load applied to the two actuators in the stroke direction is theoretically zero. However, due to turbulence caused by strong winds, the central moment of both shafts becomes unbalanced, and a load is generated in the stroke direction of the actuator. If there is no brake shoe, the resulting unbalanced wind load is large and occurs in the stroke direction (stroke direction wind load). The resulting frictional force can reduce the stroke direction wind load.

Since the pendulum motion (swaying) is repeated during strong winds, the wind load in the stroke direction depends on the acceleration of the pendulum oscillation. However, the frequency is low due to the distance of the panel support cradle span (ie, central transverse bar 21) from the north-south axis (ie, elevation rotation axis 4). Therefore, since the acceleration does not increase, the wind load in the stroke direction can be set to be small for a strong wind, which has the effect of reducing the thrust of the actuator.

This specification includes the following aspects.
[1]: A solar tracking device having one or more solar panels and adjusting the angle of the panel surface of the solar panels to follow the movement of the sun,
a frame supporting the solar panel;
a north-south rotation mechanism having an elevation rotation shaft with an east-west direction for rotating the frame in the north-south direction;
an east-west rotation mechanism having an azimuth rotation axis whose axial direction is the north-south direction for rotating the frame in the east-west direction;
and a pillar that supports the frame,
By the north-south rotation mechanism, the frame and the solar cell panel are integrally rotated in the north-south direction about the elevation rotation axis, so that the panel surface of the solar cell panel supported by the frame is rotated. The angle in the north-south direction is adjusted,
The frame and the solar cell panel are integrally rotated in the east-west direction about the azimuth rotation axis by the east-west rotation mechanism, so that the panel surface of the solar cell panel supported by the frame. The angle in the east-west direction of is adjusted,
The elevation rotation axis and the azimuth rotation axis are in a torsion positional relationship,
The north-south rotation mechanism and the east-west rotation mechanism each have a truss structure, and the frame is held by the truss structure,
A solar tracking device further comprising a brake shoe for automatically stopping shaking of the frame when the frame shakes.
[2]: The north-south rotation mechanism is
A central horizontal rod that penetrates the column and can swing in the east-west direction, a north-south rotation connecting member that connects the central horizontal rod and the frame, and a north-south rotation that connects the central horizontal rod and the frame. and an actuator,
The frame is rotated in the north-south direction by expansion and contraction of the north-south rotation actuator,
The truss structure in the north-south rotation mechanism is
It is formed by three points: a connecting portion between the connecting member for north-south rotation and the frame, a connecting portion between the central horizontal bar and the actuator for north-south rotation, and a connecting portion between the actuator for north-south rotation and the frame. The solar tracking device of [1].
[3]: the strut is cylindrical, and the central crossbar passes through the strut through two opposing openings formed in the strut;
The brake shoe
One or more first brake plates are fixedly arranged on at least one of the inner and outer peripheral surfaces of the cylindrical support and protrude from the support along the central horizontal bar. and
The above [2], wherein when the frame is swayed, contact friction between the facing surfaces of the first brake plate and the center cross bar stops the sway of the frame connected to the center cross bar. solar tracker.
[4]: The brake shoe is
a second brake plate fixedly arranged on the north-south rotation coupling member;
The frame is rotatably connected to the north-south rotation connecting member via the second brake plate,
The solar tracking device according to the above [2] or [3], wherein when the frame shakes, contact friction between opposing surfaces of the second brake plate and the frame causes the frame to stop shaking.
[5]: The east-west rotation mechanism
an east-west rotation member having one end rotatably connected to the support; an east-west rotation connection member connecting the other end of the east-west rotation member to the frame; the other end of the east-west rotation member and the support. and an actuator for east-west rotation that connects the
The frame is rotated in the east-west direction by expansion and contraction of the east-west rotation actuator,
The truss structure in the east-west rotation mechanism is
It is formed by three points: a connection portion between the east-west rotation member and the support, a connection portion between the support support and the east-west rotation actuator, and a connection portion between the east-west rotation actuator and the east-west rotation member at the other end side. The solar tracking device according to any one of [1] to [4] above.
[6]: The solar tracking device according to any one of [1] to [5] above, wherein the azimuth rotation axis passes through the apex of the strut.

It should be noted that the present invention is not limited to the above embodiments. The above embodiment is an example, and any device that has substantially the same configuration as the technical idea described in the claims of the present invention and produces similar effects is the present invention. It is included in the technical scope of the invention.

In the above example, specific members such as the central horizontal bar in the north-south rotation mechanism and the east-west rotation member in the east-west rotation mechanism have been described, but the members and configurations are not limited to these. It is sufficient if the elevation rotation axis and the azimuth rotation axis are in a torsional positional relationship, and if they are provided with a truss mechanism for supporting the frame in each rotation mechanism and a brake shoe that can automatically stop the shaking of the frame.

1 ... Solar tracking device (heliostat device) of the present invention, 2 ... Solar cell panel,
2A... Panel surface, 3... Frame, 4... Elevation angle rotation axis,
5... north-south rotation mechanism, 6... azimuth rotation axis,
7... East-West rotation mechanism, 8... Post,
9...North-south frame member, 10...East-west frame member,
11... Support body, 12... Opening,
13...East-west rotation member, 14...East-west rotation connection member,
15 ... actuator for east-west rotation,
21...Center horizontal bar, 22...Connecting member for north-south rotation,
23 ... actuator for north-south rotation,
30... Brake shoe, 31... First brake plate, 32... Flange,
33... Outer peripheral surface of strut, 34... Inner peripheral surface of strut, 35... Second brake plate, 36... Flange,
OPQ: Truss structure in the east-west rotation mechanism,
RST: A truss structure in the north-south rotation mechanism.

Claims (8)

A solar tracking device that includes one or more solar panels and adjusts the angle of the panel surface of the solar panels to follow the movement of the sun,
a frame supporting the solar panel;
a north-south rotation mechanism having an elevation rotation shaft with an east-west direction for rotating the frame in the north-south direction;
an east-west rotation mechanism having an azimuth rotation axis whose axial direction is the north-south direction for rotating the frame in the east-west direction;
and a pillar that supports the frame,
By the north-south rotation mechanism, the frame and the solar cell panel are integrally rotated in the north-south direction about the elevation rotation axis, so that the panel surface of the solar cell panel supported by the frame is rotated. The angle in the north-south direction is adjusted,
The frame and the solar cell panel are integrally rotated in the east-west direction about the azimuth rotation axis by the east-west rotation mechanism, so that the panel surface of the solar cell panel supported by the frame. The angle in the east-west direction of is adjusted,
The elevation rotation axis and the azimuth rotation axis are in a torsion positional relationship,
The north-south rotation mechanism and the east-west rotation mechanism each have a truss structure, and the frame is held by the truss structure,
A solar tracking device, further comprising a brake shoe for automatically stopping shaking of said frame when said frame shakes. The north-south rotation mechanism is
A central horizontal rod that penetrates the column and can swing in the east-west direction, a north-south rotation connecting member that connects the central horizontal rod and the frame, and a north-south rotation that connects the central horizontal rod and the frame. and an actuator,
The frame is rotated in the north-south direction by expansion and contraction of the north-south rotation actuator,
The truss structure in the north-south rotation mechanism is
It is formed by three points: a connecting portion between the connecting member for north-south rotation and the frame, a connecting portion between the central horizontal bar and the actuator for north-south rotation, and a connecting portion between the actuator for north-south rotation and the frame. The solar tracking device according to claim 1, characterized by: the strut is cylindrical and the central crossbar extends through the strut through two opposing openings formed in the strut;
The brake shoe
One or more first brake plates are fixedly arranged on at least one of the inner and outer peripheral surfaces of the cylindrical support and protrude from the support along the central horizontal bar. and
It is characterized in that when the frame shakes, contact friction between opposing surfaces of the first brake plate and the central horizontal rod stops the shaking of the frame connected to the central horizontal rod. The solar tracking device according to claim 2. The brake shoe
a second brake plate fixedly arranged on the north-south rotation coupling member;
The frame is rotatably connected to the north-south rotation connecting member via the second brake plate,
3. The solar tracking device according to claim 2, wherein when the frame sways, contact friction between opposing surfaces of the second brake plate and the frame stops the swaying of the frame. . The brake shoe
a second brake plate fixedly arranged on the north-south rotation coupling member;
The frame is rotatably connected to the north-south rotation connecting member via the second brake plate,
4. The solar tracking device according to claim 3, wherein when the frame shakes, contact friction between opposing surfaces of the second brake plate and the frame causes the frame to stop shaking. . The east-west rotation mechanism is
an east-west rotation member having one end rotatably connected to the support; an east-west rotation connection member connecting the other end of the east-west rotation member to the frame; the other end of the east-west rotation member and the support. and an actuator for east-west rotation that connects the
The frame is rotated in the east-west direction by expansion and contraction of the east-west rotation actuator,
The truss structure in the east-west rotation mechanism is
It is formed by three points: a connection portion between the east-west rotation member and the support, a connection portion between the support support and the east-west rotation actuator, and a connection portion between the east-west rotation actuator and the east-west rotation member at the other end side. 6. The solar tracking device according to any one of claims 1 to 5, characterized in that: 6. The solar tracking device according to any one of claims 1 to 5, wherein the azimuth rotation axis passes through the apex of the strut. 7. The solar tracker of claim 6, wherein said azimuth axis of rotation passes through the apex of said strut.

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