JP2000243997A - Photovoltaic power generation apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To decrease an installation space, make a plurality of sunlight collecting units rotatable on a large scale about a first rotating axis and in linkage with each other about second rotating axes, and minimize loosenesses of conductors connected to the sunlight collecting units, in a photovoltaic power generation apparatus wherein the sunlight collecting units can be rotated about the first and second rotating axes which are orthogonal to each other. SOLUTION: Each of rotating frames 11 which is rotatable about a first rotating axis C1 is rotatably supported by first and second support plates 91 and 92. A plurality of sunlight collecting units 12 arranged in arrays are not only rotatably supported by the corresponding frames 11 so that the units 12 in each array can rotate about a plurality of second rotating axes C2, but also coupled to one another through parallel links. The units 12 are also connected in series with one another through conductors. The conductors, which extend from the units 12 located at both ends of each array as viewed in a direction of the array, pass through first and second main shafts 191 and 192 which are coaxial with the corresponding axis C1, whereby the conductors are led outside the plates 91 and 92.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is capable of rotating a plurality of solar light collecting units for converting sunlight into electric energy around a first rotation axis, and a first rotation. The present invention relates to a solar power generation device that can be rotated around a second rotation axis orthogonal to an axis.

[0002]

2. Description of the Related Art In order to constantly collect solar energy efficiently, it is necessary to perform a follow-up control so that the light receiving surface of a solar collection unit for converging sunlight to a solar cell or the like by a lens or the like always faces the sun. Conventionally, for example, disclosed in Japanese Patent Publication No. 57-10337, a plurality of solar collection units arranged along a main axis swinging in the east-west direction can swing in the east-west direction. It has been.

[0003]

SUMMARY OF THE INVENTION In the above prior art,
At a plurality of locations spaced apart in the axial direction of the main shaft whose center coincides with the first rotation axis, the sunlight collecting units rotatable around the second rotation axis are mounted so as to be aligned on both sides of the main shaft. A motor is connected to one end of a drive shaft extending in parallel with the first rotation axis, and a plurality of worms provided on the drive shaft are meshed with fan-shaped worm wheels connected to the respective solar collection units. ing. For this reason, when the main shaft rotates around its axis, that is, the first rotation axis, each solar light collecting unit rotates so as to draw a rotation trajectory at a position away from the center of the main shaft. Location constraints increase. In particular, when rotating the main shaft to rotate each solar collection unit in the east-west direction, the rotation angle is relatively large, so the free space required for rotation of each solar collection unit increases, For example, it would be difficult to install it on the roof of a house.

In order to solve such a problem, a plurality of sunlight collecting units are rotatably supported around a second rotation axis on a rotation frame which is rotatable about a first rotation axis. However, in this case, if a driving unit is provided for each solar light collecting unit, it is necessary to precisely control the solar light collecting unit so that the cost is increased and there is no variation between the solar light collecting units.

[0005] Further, the length of the conductor for extracting the electric energy obtained in each solar light collecting unit is set to allow the solar light collecting unit to rotate around the first and second rotation axes. It is necessary to be set to have an extra length, but the extra length causes the conductor to be slackened. If such slack in the conductor is large, it is necessary not only to secure extra space so that the slack does not disturb the movable part,
The appearance is also inferior.

The present invention has been made in view of the above circumstances, and enables a relatively large space required for installation and a relatively large rotation angle about the first rotation axis. At the same time, each solar collection unit can be rotated around the second rotation axis with a simple configuration, and the slack of a lead for extracting electric energy from the solar collection unit can be minimized. It is an object to provide a photovoltaic power generator as described above.

[0007]

In order to achieve the above object, according to the present invention, a plurality of sunlight collecting units for converting sunlight into electric energy are provided around a first rotation axis. It is possible to rotate and the first
In a photovoltaic power generation device capable of rotating about a second rotation axis orthogonal to the rotation axis, a rotation frame rotatable about the first rotation axis is located on the first rotation axis. A plurality of sunlight collecting units supported by fixed first and second support plates via first and second main shafts arranged coaxially and arranged on a first rotation axis; Are supported by the rotation frame so as to be able to rotate around a plurality of second rotation axes individually corresponding to the respective rotation links, and are connected by parallel links to rotate in conjunction with the respective second rotation axes. The solar collection units are connected to each other and connected in series via a lead wire arranged along the first rotation axis, and the solar collection units at both ends along the arrangement direction of the plurality of solar collection units An extending conductor extends through the first and second spindles. Characterized in that it is led out of the first and second support plates.

According to such a configuration, the plurality of solar light collecting units arranged on the first rotation axis are arranged on the rotation frame rotatable about the first rotation axis. Each of the solar collection units is rotatably supported at the center of the rotation frame around the first rotation axis of the rotation frame. The space required by the rotation of the solar collection unit around the first rotation axis is relatively small, and each solar collection unit is large around the first rotation axis. Can rotate. Each solar collection unit is interconnected by a parallel link, and a second corresponding to each of the solar collection units is provided.
Since the solar light collecting units are rotated in association with the rotation axis, each solar collection unit can be rotated about the second rotation axis with a simple configuration without requiring complicated control. Further, a lead wire that connects the respective solar collection units in series is disposed along the first rotation axis, and a lead extending from the solar collection units at both ends along the arrangement direction of the respective solar collection units is connected to each of the sunlight collection units. Since the unit is pulled out to the outside of the first and second support plates through the first and second main shafts whose position does not change even when the unit is rotated around the first and second rotation axes, extra slack of the conductor is prevented. As much as possible, the space for arranging extra slack can be reduced, and the appearance of the conductor arrangement can be improved.

The invention according to claim 2 is the same as the above-described claim 1.
In addition to the configuration of the invention described above, the first and second pivot frames corresponding to the pivot frames include a plurality of pivot frames that support the plurality of sunlight collecting units so as to be pivotable about the second pivot axes. At least a first main shaft of the second main shaft is fixed, and a first support plate that supports the first main shafts in a common and rotatable manner includes a drive shaft having a rotation axis orthogonal to the axis of the first main shaft. Rotating frame driving means configured as one component and connected to the first main shaft is provided for each rotating frame individually, and the driving shaft of one rotating frame driving means of each rotating frame driving means is provided. And a drive source of the one rotating frame driving unit and the driving shaft of the other rotating frame driving unit are connected to each other.
According to this configuration, all the rotating frames are connected to each other via a universal joint, and by inputting power from a single drive source to one rotating frame driving means, Each of the rotating frames can be rotated in conjunction with one rotating axis, and also absorbs an error in assembling each of the rotating frames to the first support plate and a change in the dimension between the rotating frame driving means. Power can be reliably transmitted between the means.

According to a third aspect of the present invention, in addition to the configuration of the first or second aspect of the present invention, a single unit disposed between a pair of rotating frames supported by the first and second support plates. A cable driving means is attached to the first support plate, and one end is connected to the cable driving means and the other ends of the pair of push-pull cables distributed to the two rotating frames are respectively supported on the two rotating frames. According to this configuration, each of the solar collection units can be easily connected to a single cable driving unit common to both rotating frames. With such a configuration, it is possible to rotate in conjunction with the second rotation axis without requiring complicated control.

According to a fourth aspect of the present invention, in addition to the configuration of the first aspect of the present invention, at least a first of the first and second spindles corresponding to the pair of rotating frames is provided on the pair of rotating frames.
A pair of rotating frame driving means for rotating each of the first main shafts is provided on a first support plate to which the main shafts are respectively fixed and which supports the first main shafts in a common and rotatable manner. A single cable driving means for driving a push-pull cable respectively connected to one of the solar collection units respectively supported on the moving frame is provided on the first support plate between the two rotating frame driving means. According to this configuration, each of the rotating frames is rotated about the first rotating axis by the first supporting plate of the first and second supporting plates that support the both rotating frames in common. A pair of rotating frame driving means for driving and a single cable driving means for rotating each of the solar light collecting units about the second rotation axis can be compactly arranged.

According to a fifth aspect of the present invention, in addition to the configuration of the first aspect of the present invention, the conductive wire is connected to the bottom of the solar light collecting unit. According to the configuration, it is easy to connect the solar collection units in series.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.

1 to 8 show an embodiment of the present invention. FIG. 1 is a plan view of a photovoltaic power generator, FIG. 2 is a sectional view taken along line 2-2 of FIG. 1, and FIG. 4 is a longitudinal sectional view of the collection unit, FIG. 4 is a sectional view taken along line 4-4 in FIG. 1, and FIG.
6 is an enlarged sectional view taken along line 6-6 of FIG. 1, FIG. 7 is an enlarged sectional view taken along line 7-7 of FIG. 5, and FIG. 8 is an enlarged sectional view taken along line 8-8 of FIG.

First, in FIGS. 1 and 2, for example, a pair of first and second support plates 9 ₁ and 9 ₂ arranged at positions spaced apart in the north-south direction are provided on the ground or on the roof of a house. It is fixed on the support frame 10 to be fixed. Between the support plates 9 ₁ and 9 ₂ , a plurality of, for example, a pair of first rotation axes C1 and C1 along the north-south direction are set at positions spaced from each other, and the first rotation axis C1 is provided. , C1
A plurality of, for example, a pair of pivot frames 1
1 and 11 are supported between the support plates 9 ₁ and 9 ₂ , respectively.
Two sets of, for example, five solar collection units 12, 12... Arranged in a row on C1 are set for each of the solar collection units 12, 12,... Orthogonal to the first rotation axes C1, C1. A plurality of second rotation axes C2, C2,... That is, the first rotation axis C
When 1 is along the north-south direction, each of the solar collection units 12, 12,... Is a second rotation axis C along the east-west direction.
2, C2..., And are supported by the respective rotating frames 11, 11.

In FIG. 3, the solar light collecting unit 12
Is a quadrangular pyramid-shaped housing 13 having a large upper portion, a lens 14 fixed to the upper end of the housing 13 so as to close the upper end of the housing 13, a support member 15 closing the lower end of the housing 14, A substrate 16 fixed to the inner surface of the member 15, a solar cell 17 bonded on the substrate 16, and a light guide 18 adhered on the solar cell 17
And converts the light condensed by the lens 14 into electrical energy in the solar cell 17. Are driven following the sun so that the upper surface, that is, the light receiving surface of the solar collection units 12, 12 is always directed to the sun.

The turning frame 11 includes a pair of side plates 11a, 11a extending along the first turning axis C1, and a pair of side plates 11a.
a, 11a a pair of end plates 11b, 11b connecting both ends
And is formed in a rectangular frame shape.
First and second spindles 19 ₁ and 19 ₂ whose axes are aligned with the first rotation axis C ₁ are fixed to ₁ b and 11 b, respectively. Thus, the first main shaft 19 ₁ is rotatably supported by the first support plate 9 ₁ which is _one of the two support plates 9 ₁ and 9 ₂ , and the second main shaft 19 ₂ is supported by the two support plates 9 ₁ and 9 ₂ . rotation is freely supported on the second support plate 9 ₂ which is the other.

[0018] Referring also to FIGS. 4 and 5, the first end portions of the support plate 9 _1, rotatable frame drive means 20, 20 individually corresponding to each time Dowaku 11, 11 are respectively provided The rotating frame driving means 20, 20 are housed in a pair of gear cases 21, 21, respectively.

[0019] Each gear case 21 includes a case 22 which is formed integrally with the first end portions of the support plate 9 _1, the case section 2
2 and a cover 23 fastened to the rotating frame 11.
Spindle 19 ₁ is plunged into the gear case 21.

The rotating frame driving means 20 includes two first rotating axes C.
1, a drive shaft 24 extending in a direction orthogonal to C1, a worm 25 provided on the drive shaft 24, a worm wheel 26 meshing with the worm 25, an intermediate gear 27 rotating integrally with the worm wheel 26, and a driven gear 28 fixed to the first spindle 19 _1, first from the drive shaft 24
Configured as a possible power transmission to the main shaft 19 _1.

Both ends of the drive shaft 24 are rotatably supported by a case portion 22, and a worm 25 is provided at an intermediate portion of the drive shaft 24. The worm wheel 26 has a support member 29 fastened to the case 22 in the gear case 21.
The worm wheel 26 is spline-coupled to a rotating shaft 30 rotatably supported with an axis parallel to the first rotating axes C1 and C1. The intermediate gear 27 is provided integrally with the rotation shaft 30 at a position close to the rotation shaft 30. That is, the support member 29 is integrally provided with a cylindrical support cylinder portion 29a, and an axis of the rotation shaft 30 is provided between the rotation shaft 30 inserted into the support cylinder portion 29a and the support cylinder portion 29a. A pair of bearings 31 and 32 are provided so as to prevent the directional movement, and the worm wheel 26 is spline-coupled to the rotating shaft 30 so as to be sandwiched between the inner ring of one bearing 31 and the intermediate gear 27.

Furthermore driven gear 28 is intended to be formed in a fan shape, it is fastened by a plurality of bolts 33 ... to the first spindle 19 _1. Thus, a bearing 34 is provided between the first main shaft 19 ₁ and the case portion 22, and
An annular seal member 35 is interposed so as to be located on the outer side of. On the other hand, a ₂ second spindle 19 which is fixed to the first main shaft 19 ₁ and the rotary frame 11 and coaxially, between the second support plate 9 _2, bearing 38 is interposed as shown in Figure 6 In addition, an annular seal member 39 is interposed so as to be located outside the bearing 38.

In FIG. 7, the support member 29 is fastened to the case portion 22 by a plurality of, for example, three fastening bolts 36, and is supported so that each fastening bolt 36 is inserted and screwed to the case portion 22. The insertion holes 37 provided in the member 29 are formed as elongated holes along the axial direction of the drive shaft 24, respectively. Therefore, it is possible to adjust the position of the drive shaft 24 in a direction parallel to the axis, and attach the support member 29 to the case portion 22, that is, the first support plate 9.

Of the two rotating frame driving means 20, 20,
A rotating frame driving motor 40 as a driving source is provided in one gear case 21 in which one rotating frame driving means 20 arranged on the left side of FIG. An output gear 42 which is housed and fixed with an axis and is provided on an output shaft 41 of the rotating frame driving motor 40.
Are meshed with a gear 43 provided at one end of the drive shaft 24. As a result, the driving force output from the rotating frame driving motor 40 is reduced by the output gear 42 and the gear 43 and transmitted to the drive shaft 24, and further reduced by the one rotating frame driving means 20. Is transmitted to the rotating frame 11.

The driving shaft 24 of the one rotating frame driving means 20 and the driving shaft 24 of the other rotating frame driving means 20 are connected to a transmission shaft 44 extending along the axial direction of the two driving shafts 24.
Are connected to both ends of the motor through universal joints 45 and 46, respectively. Rotational driving force generated by the operation of the single rotation frame drive motor 40 is transmitted from both the rotation frame driving means 20 and 20 to both the first spindles 9. , 9 and the two rotating frames 15, 15 rotate about the respective first rotating axes C1, C1.

[0026] Moreover transmission shaft 44, which is disposed below the first support plate 9 _1, this transmission shaft 44, the universal joint for connecting the drive shaft 24 of the one rotating frame driving unit 20 And the protection cylinder 47 in which the two gear cases 2 are housed.
It is provided between 1 and 21.

In each of the rotating frames 11, 11, the upper part of each of the sunlight collecting units 12, 12,... Has a second rotating axis C2, C2,.
Each is supported so that it can rotate around. That is, a pair of sub-shafts 48, 48 whose axes are aligned with the second rotation axes C2, C2,... Are fixed to the upper side surfaces of each of the solar light collecting units 12, 12,. Are connected to each of the rotating frames 11.
, Are rotatably supported by bearings 49, 49,... Which are fixedly arranged five at a time on the upper surfaces of both side plate portions 11a, 11a.

Moreover, the lower part of the two solar collection units 12, 12...
Are connected to connecting rods 50 extending along the direction of arrangement of the connecting rods via connecting shafts 51 so as to be rotatable about axes parallel to the second rotation axes C2, C2,.
The side plates 11a, 11a of the rotating frame 11, the solar light collecting units 12, 12,... And the connecting frame 50 form a parallel link 52 in a plane parallel to the first rotating axis C1.
That is, the solar light collecting unit 1 for each of the rotating frames 11, 11
Are connected via parallel links 52 arranged in a plane parallel to the first rotation axis C1, and the second rotation axes individually correspond to the respective solar collection units 12, 12,. C2, C2,...

[0029] The first supporting plate 9 ₁ between both rotating frame driving means 20, 20, has been single cable drive means 53 is provided, a pair of push one end of which is connected to the cable drive unit 53 The other ends of the pull cables 54, 54 are respectively connected to one of the solar collection units 12, 12,.

In FIG. 8, the cable driving means 53
A cable driving motor 57; a screw shaft 58 extending in a direction parallel to a rotation axis of the cable driving motor 57; a driving gear 60 provided on an output shaft 59 of the cable driving motor 57; A driven gear 61 fixed to one end of the screw shaft 58; and a nut 62 screwed to the screw shaft 58 while being prevented from rotating around the axis of the screw shaft 58.

The cable drive motor 57, the case composed of a cap-like cover 63, an end plate 64 which is fastened to the first support plate 9 ₁ closes the open end of the cover 63 6
One end of the screw shaft 58 is rotatably supported by the end plate 64 and protrudes into the case 65. The end of the output shaft 59 protruding from the cable driving motor 57 is rotatably supported by the end plate 64, and the drive gear 60 provided integrally with the output shaft 59 in the case 65 is provided inside the case 65. At the driven gear 28 fixed to one end of the screw shaft 58.

The end plate 64 of the case 65 has a screw shaft 5
8 and from the first support plate 9 ₁ allowed housed is fixed to one end of the second support plate 9 to ₂ side extending guide tube 66, the other end of the guide tube 66 is closed by the closure plate 67. The other end of the screw shaft 58 is rotatably supported by a bearing plate 68 which is in contact with the inner surface of the closing plate 67, and the axis of the screw shaft 58 is provided between the bearing plate 68 and the end plate 64. A pair of regulating rods 73 extending parallel to the axis of the screw shaft 58 at positions deviated from
... are provided. Thereby, the guide cylinder 66 of the bearing plate 68
Rotation within is prevented. Moreover, the two restriction rods 73 penetrate the nut 62 screwed to the screw shaft 58, and the rotation of the nut 62 is prevented by the two restriction rods 73. Therefore, the nut 62 reciprocates in the axial direction according to the rotation of the screw shaft 58. End plate 6
4, an end plate 64 of the nut 62 which is in contact with the nut 62;
The stopper 69 that regulates the moving end in the direction approaching the position is fixed.

The push-pull cable 54 is
Cable 55 is movably inserted into the cable 55
The two push-pull cables 54,
One end of the outer cable 55 at 54
66 to the second support plate 9 _TwoExtend to the side
Fixed to the tip of a first stay 70 connected to the guide cylinder 66.
Inner cable protruding from one end of each outer cable 55
-One end of the cable 56 connects the closing plate 67 and the bearing plate 68
It is movably penetrated and connected to the nut 62.

On the other hand, in each of the rotating frames 11, 11, of the five solar light collecting units 12, 12..., _{Two of which are} closer to the second support plate 9 _2.
The rotatable frame 11, 11 between 2 on a side of the second stay 71, 71 are fixed, also solar collection units 12, 12 closest to the second support plate 9 _2, upper end sub Shaft 48
And arms 72 extending vertically so that the lower end is connected to the connection shaft 51.

The two push-pull cables 54, 54
The other ends of the outer cables 55, 55 are fixed to the second stays 71, 71, respectively.
The other ends of the inner cables 56 projecting from the other end of the connecting shaft 5 are connected to the arms 72 above the center position between the sub shaft 48 and the connecting shaft 51. That is, the other ends of the inner cables 56, 56 are connected to the solar collection unit 12,
12 are connected to a position close to the sub shaft 48 above the center in the vertical direction.

By the way, a plurality of, for example, five solar collection units 12,
.. Are connected in series via conducting wires 76 arranged along the first rotation axes C1, C1.

.. Are connected to the substrate 16 through the support member 15 at the bottom of each solar light collecting unit 12, as shown in FIG. The solar collection unit 12 disposed at an end portion of the first support plate 9 ₁ side along the respective solar collection units 12, 12 ... arranged direction,
Conductor 76 ... is connected to 12, as shown in Figure 5, in the first support plate 9 ₁ gear case is provided in 21, the through-holes 77 ... provided coaxially on the first spindle 19 ₁ It is pulled out so as to penetrate airtightly, and is connected to external conductors 79 extending outside the gear case 21 via connectors 7 fixed to the support member 29.

On the other hand, each solar collection unit 12, 12,...
Lead 76 which is connected to the solar collection units 12, 12 arranged at the end of the second support plate 9 ₂ side along the arrangement direction of the
..., as shown in Figure 6, passes through the through-holes 80 ... provided coaxially on the ₂ second spindle 19 in an air-tight, the second support plate 9
_{The two} are connected to each other outside.

Next, the operation of this embodiment will be described. A pair of rotating frames 11, 11 rotatable around a pair of first rotating axes C1, C1 parallel to each other, respectively.
, Which are arranged side by side on the first rotation axes C1, C1 are second rotation axes C2, C
2 are supported so as to be rotatable around the respective solar collection units 12, 12... When the rotation frames 11, 11 rotate around the first rotation axes C1, C1. .. Rotate about the portions located on the first rotation axis C1, C1. Therefore, the space required by the rotation of the solar collection units 12, 12,... Around the first rotation axis C1 is relatively small, and a large number of the solar collection units 12, 12,. When the first rotation axis C1 is arranged along the north-south direction, each of the solar light collecting units 12, 12,... Rotates greatly as the sun moves from the east side to the west side. Can move.

Rotating frame driving means 20, 20 are disposed at fixed positions corresponding to the rotating frames 11, 11, respectively. One of the rotating frame driving means 20, 20 has a rotating frame driving means. The driving force is input from the motor 40, and the driving force is transmitted from the driving shaft 24 included in the rotating frame driving unit 20 to the driving shaft 24 included in the other rotating frame driving unit 20, so that complicated control is required. Each of the solar light collecting units 12, 12.
It is possible to rotate in conjunction with the rotation axes C1 and C1.

Further, the drive shaft 24 of the rotating frame driving means 20 to which the rotating frame driving motor 40 is connected and the driving shaft 24 of the other rotating frame driving means 20 are connected to the transmission shaft 44 and the universal joint 4.
Since linked via 5,46, it can absorb the dimensional change between the respective rotary frame drive means 20 and 20 by assembling errors of the first support plate 9 ₁ perform reliable power transmission .

Further, since the transmission shaft 44 is disposed below the first support plate 9, no extra space is required for disposing the transmission shaft 44, and the space efficiency can be improved. At the same time, the transmission shaft 44 and the universal joint 45 can be protected by the first support plate 9, and it is not necessary to greatly increase the strength of the protective cylinder 47 that houses the transmission shaft 44 and the universal joint 45.

Further, the reduction ratio of the rotating frame driving means 20, 20 is increased by the worm 25 and the worm wheel 26 provided in each rotating frame driving means 20, 20, and the operation amount of the rotating frame driving motor 40 is increased. Even if there is a rotating frame 11, 11
Of the solar light collecting units 12, 12,... By reducing the amount of rotation around the first rotation axes C1, C1.
1, the rotation around C1 can be controlled accurately. Further, since the function of preventing the reverse rotation due to the engagement of the worm 25 and the worm wheel 26 can be obtained by the rotating frame driving means 20, 20, the rotating frames 11, 1 are acted upon by an external force.
1 can be prevented from rotating. In addition, since the position of the rotary shaft 30 provided with the worm wheel 26 can be adjusted along the axial direction of the drive shaft 24, the backlash between the gears of the rotary frame drive means 20, 20 can be easily absorbed. As a result, it is possible to prevent the generation of abnormal noise at the time of operation, and it is possible to minimize the occurrence of variations in the amount of rotation of each of the rotating frames 11.

Are connected to each other by a parallel link 52 disposed in a plane parallel to the first rotation axis C1 to rotate around the second rotation axes C2, C2. The push-pull cables 54, 54, which are supported by the rotating frame 15 so as to be able to move and have one ends connected to a single cable driving means 53, have the other ends connected to both rotating frames 11, 54.
11 is connected to one of the plurality of solar collecting units 15, 15... Respectively supported by a plurality of solar collecting units, so that each solar collecting unit 12, 12,. Can be rotated in conjunction with the second rotation axes C2, C2,... With a simple configuration using the cable driving motor 57.

[0045] Moreover are those first supporting plate 9 ₁ to the cable drive unit 53 is provided between the pair of rotatable frame drive means 20, 20 provided in the first support plate 9 _1, both rotatable frame 11 , the first support plate 9 _one of the 11 first and second support plate 9 for supporting the common _1, 9 _2, each time Dowaku 11,1
, And a pair of rotating frame driving means 20, 20 for rotating each of them around the first rotating axes C1, C1, and each of the sunlight collecting units 12, 12,... Around the second rotating axes C2, C2,. A single cable driving means 53 that is driven to rotate can be compactly arranged.

The upper part of each of the solar light collecting units 12, 12,... Is rotatable around the second rotation axis C2, C2,. Are supported by the rotating frames 11, 11 at positions near the upper surfaces of the light receiving surfaces 12, 12,..., And the positions of the light receiving surfaces can be stabilized. is there. In particular, when the sunlight collecting unit 12 has a shape in which the upper part is larger than the lower part as in this embodiment, the position of the light receiving surface can be effectively stabilized, and the sunlight collecting unit 12 is supported. The balance is also good.

In addition, the push-pull cable 5
Are arranged above the center of the sunlight collecting units 12 in the vertical direction.
.. Can be rotated relatively large around the second rotation axes C2, C2 using the push-pull cables 54 having a relatively small stroke. It becomes possible.

Further, each of the solar light collecting units 12, 12,...
Are arranged along the first rotation axes C1 and C1, and the solar collection units 1
, Extending from the solar light collecting units 12, 12 at both ends along the arrangement direction of the solar light collecting units 12, 12,.
1, the position of which is not changed by rotation around C2
Are drawn out of the first and second support plates 9 ₁ , 9 ₂ through the second main shafts 19 ₁ , 19 ₂ , so that excessive slack of the conductors 76, 76. The space for disposing the slack can be reduced, and the appearance of the conductor arrangement can be improved.

Are connected to the bottom of the solar light collecting units 12, 12,..., So that the series connection of the solar light collecting units 12, 12,.

Although the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the appended claims. It is possible to do.

[0051]

As described above, according to the first aspect of the present invention, the space required by the rotation of the solar collection unit around the first rotation axis is made relatively small, so that each of the solar collection units is reduced. Can be largely rotated about the first rotation axis, and each solar collection unit can be rotated about the second rotation axis with a simple configuration without requiring complicated control. . In addition, the extra slack in the wires connecting the solar collection units in series is minimized,
The space for arranging extra slack can be reduced, and the appearance of the conductor arrangement can be improved.

According to the second aspect of the present invention, by inputting power from a single driving source to one rotating frame driving means, all the rotating frames are interlocked around the first rotating axis. The rotating frame can be rotated to absorb an error in assembling each rotating frame to the first support plate and a change in dimension between the rotating frame driving means, and reliably transmit power between the rotating frame driving means. can do.

According to the third aspect of the present invention, each solar light collecting unit has a simple structure using a single cable driving means common to both rotating frames, and does not require complicated control. It can rotate in conjunction with the second rotation axis.

According to the fourth aspect of the present invention, each of the rotating frames is rotated around the first rotating axis by the first of the first and second supporting plates which support the two rotating frames in common. A pair of rotating frame driving means for dynamic driving and a single cable driving means for rotationally driving each solar light collecting unit about the second rotation axis can be compactly arranged.

Further, according to the fifth aspect of the present invention, it is easy to connect the solar light collecting units in series.

[Brief description of the drawings]

FIG. 1 is a plan view of a solar power generation device.

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

FIG. 3 is a vertical sectional view of the solar light collecting unit.

FIG. 4 is a sectional view taken along line 4-4 of FIG. 1;

FIG. 5 is a sectional view taken along line 5-5 in FIG. 4;

FIG. 6 is an enlarged sectional view taken along line 6-6 of FIG. 1;

FIG. 7 is an enlarged sectional view taken along line 7-7 of FIG. 5;

FIG. 8 is an enlarged sectional view taken along line 8-8 of FIG. 1;

[Description of Signs] 9 ₁ ··· First support plate 9 ₂ ··· 2nd support plate 11 ··· rotating frame 12 ··· sunlight collecting unit 19 ₁ ··· first spindle 19 ₂ ··· · Second spindle 24 ··· Drive shaft 20 ··· Rotating frame driving means 40 ··· Rotating frame driving motor as a driving source 45, 46 ··· Universal joint 52 ··· Parallel link 53 ··· · Cable driving means 54 ··· Push-pull cable 76 ··· Conductor C1 ··· First rotation axis C2 ··· Second rotation axis

Claims (5)

[Claims] 1. A plurality of solar light collecting units (12) for converting sunlight into electric energy can be rotated about a first rotation axis (C1), and a first rotation is performed. A second rotation axis (C) orthogonal to the axis (C1)
2) In the photovoltaic power generation device that can be turned around, the turning frame (11) that can turn around the axis of the first turning axis (C1) is located on the first turning axis (C1). Are supported on fixed first and second support plates (9 ₁ , 9 ₂ ) via first and second main shafts (19 ₁ , 19 ₂ ) arranged coaxially, and a first rotation axis (C1). The plurality of solar collection units (12) arranged on the upper side
2) The rotation frame (1) can be rotated around a plurality of second rotation axes (C2) individually corresponding to the rotation frame (1).
1) and are connected to each other by parallel links (52) so as to rotate in association with each second rotation axis (C2), and each solar collection unit (12) is connected to the first rotation axis (C2).
A plurality of solar light collecting units (12) connected in series via a conducting wire (76) arranged along the rotation axis (C1).
A conductor (76) extending from the solar collection units (12) at both ends along the arrangement direction of the first and second spindles (1).
A photovoltaic power generation device characterized by being drawn out of the first and second support plates (9 ₁ , 9 ₂ ) through 9 ₁ , 19 ₂ ). 2. A plurality of solar light collecting units (12).
Are supported on a plurality of rotating frames (11) that are rotatable about the second rotating axes (C2).
First and second spindles (19 ₁ , 19 ₂ ) corresponding to 1)
At least the first spindle of the (19 ₁₎ is fixed respectively to each first spindle (19 ₁₎ and a common first support plate which rotatably supported (9 _1), the first spindle (19 ₁₎ Each of the rotating frames (11) includes a driving shaft (24) having a rotating axis orthogonal to the axis of the rotating shaft (24) as one component and connected to the first main shaft (19 ₁ ). And a driving source (40) is connected to the drive shaft (24) of one rotating frame driving means (20) of each rotating frame driving means (20), and Frame driving means (2
0) drive shaft (24) and other rotating frame drive means (20)
The photovoltaic power generator according to claim 1, wherein the drive shaft (24) is connected to each other via a universal joint (45, 46). 3. A single cable driving means (53) disposed between a pair of rotating frames (11) supported by first and second support plates (9 ₁ , 9 ₂ ). attached to the plate (9 _1), the other end of the cable drive means (53) connecting one end to has been both rotatable frame (11) a pair of push-pull cable is allocated to the side (54), both rotatable frame A plurality of solar collection units (1) supported by (11)
The photovoltaic power generation device according to claim 1 or 2, wherein the photovoltaic power generation device is connected to one of (2) and (3), respectively. 4. A pair of rotating frames (11), first and second spindles (19 ₁ , 1) corresponding to the rotating frames (11).
9 ₂ at least a first main axis of the) (19 ₁₎ is fixed respectively, on their first spindle (19 ₁₎ a first support plate and rotatably supported on the common (9 _1), the first _{One of the} solar collection units (12) is provided with a pair of rotating frame driving means (20) for respectively rotating and driving the main shaft (19 ₁ ), and each of the plurality of rotating frame (11) is supported on the rotating frame (11).
Push-pull cables (54) connected to each other
2. The photovoltaic power generator according to claim 1, wherein a single cable driving means (53) for driving the first frame is provided on the first support plate (9 ₁ ) between the two rotating frame driving means (20). . 5. The solar conductor (76) is connected to the bottom of a solar collection unit (12).
The photovoltaic power generator according to any one of claims 4 to 4.