JPWO2020100181A1 - Solar power generator - Google Patents

Abstract

The photovoltaic power generation device of the present invention has a base portion having a predetermined shape installed on a flat surface, a plurality of leg-shaped support portions fixed to the upper surface of the base portion at predetermined intervals, and these legs. A solar panel provided in an inclined state at the upper end of each rotating shaft of the shape supporting portion, and a wire-shaped synchronizing means connected to the outer peripheral surface of each rotating shaft in an endless manner by winding the solar panel at least once. A driving means having an operating rod provided on the base portion and having a protruding tip portion connected to a part of the wire-shaped synchronizing means via a fixing means, and a driving means provided on the base portion and described above. A control unit that controls the expansion and contraction of the operating rod of the drive means and a non-slip member that fixes each winding portion of the wire-shaped synchronization means are provided, and each rotation axis of the three or more leg-shaped support portions is driven. By the driving force of the means, the leg-shaped support portion is simultaneously rotated to a predetermined range in the circumferential direction via the wire-shaped synchronizing means. Therefore, the power generation device can be manufactured at low cost, and the power generation device can be easily and quickly assembled on site.

Description

The present invention relates to a photovoltaic power generation device.

FIG. 15 is an explanatory diagram schematically showing a photovoltaic power generation device (hereinafter, referred to as “power generation device”) described in Patent Document 1. In this figure, power generation devices X1, X2, and X3 having the same configuration are arranged side by side with a predetermined interval in the left-right direction.

First, the power generation device X1 on the right side of the drawing serves as a reference. The power generation device X1 can swing via a fixed base 8, a fixed shaft 3, a rotary cylinder 2 fitted to the fixed shaft 3, a support 17 fixed to the upper end of the rotary cylinder, and a support 18 via a shaft 18. It has a solar panel 1 and the like that are pivotally supported by.
A plurality of driven sprockets 4 are fixedly provided on the outer peripheral surface of the rotary cylinder 2. Here, for convenience, the driven sprocket 4 is divided into a first driven sprocket 4a and a second driven sprocket 4b.

A control box 16 and a drive motor 7 whose drive timing, rotation speed, rotation direction, rotation amount, and the like are controlled by the control box 16 are installed on the upper surface of the fixed base 8.

The drive motor 7 is in a vertical state, and a drive sprocket 5 is provided on its output shaft. Then, the drive chain 6 is hung on the drive sprocket 5 and the first driven sprocket 4a. Therefore, the rotary cylinder 2 can rotate in the forward and reverse directions by the driving force of the drive motor 7.

Next, the power generation device X2 in the center of the drawing and the power generation device X3 on the left side of the drawing are provided with a first driven sprocket 4a and a second driven sprocket 4b on the outer peripheral surfaces of the rotating cylinders 2, 2 and 2, respectively. Then, the connecting chain 15a is hung on the second driven sprocket 4b above the power generation device X1 and the second driven sprocket 4b above the power generation device X2. Further, a connecting chain 15b is hung on the first driven sprocket 4a below the power generation device X2 and the first driven sprocket 4a below the power generation device X3. Therefore, the drive chain 6 on the drive motor 7 side, the connecting chain 15a between the power generation device X1 and the power generation device X2, and the connection chain 15b between the power generation device X2 and the power generation device X3 are independent of each other.

In the above configuration, by the driving force of one drive motor 7, the rotating cylinders 2, 2, of the power generation device X1, the power generation device X2, and the power generation device X3 via the power transmission means 5, 6, 4, 15a, 15b, 2 can rotate synchronously in the horizontal direction. Therefore, each solar panel 1 also rotates in the same direction. Reference numeral 14 is a semicircular arm fixed to the back surface of the solar panel 1, and reference numeral 13 is a locking means for fixing the semicircular arm (reference numeral is that of Patent Document 1).

The photovoltaic power generation device of Patent Document 1 unitizes a plurality of power generation devices capable of rotating the solar panels 1 of the plurality of power generation devices X1, X2, and X3 at the same time with one drive source. Although it has advantages such as being able to increase the amount of power generation, it has the following drawbacks.
(A) Since the synchronous means for synchronously rotating the rotary cylinders 2, 2 and 2 are the drive sprocket 5, the drive chain 6, the driven sprocket 4, and the connecting chains 15a and 15b that are independent of each other, the number of parts increases. .. Therefore, the power generation device cannot be manufactured at low cost.
(B) In the case of a strong wind or a sandstorm, sand, dust, etc. adhere to the sprocket and the chain, and as a result, the rotating cylinders 2, 2 and 2 do not rotate easily, and maintenance is always required. Therefore, running costs are high.
(C) Since the fixed bases 8, 8a and 8a of the power generation devices X1, X2 and X3 are individually installed on the flat surface F, it is difficult to adjust the lengths of the connecting chains 15a and 15b. ..
In addition, Patent Document 2 describes a specific configuration of an electric actuator in which an operating rod expands and contracts.

Patent Document 1: Japanese Patent Application Laid-Open No. 2014-86430 Patent Document 2: Japanese Patent Application Laid-Open No. 9-180888

The main object of the present invention is that, in view of the drawbacks of Patent Document 1, the power generation device can be manufactured at a very low cost, and the power generation device can be easily and quickly assembled on site. Specific problems are that the synchronization means can be easily wound around the rotation shafts of a plurality of leg-shaped supports, that the winding portion does not slip when the synchronization means is wound around the rotation shafts, and that the synchronization means is synchronized as much as possible. For example, to prevent sand from adhering to the means. In particular, it is necessary to prevent sand from easily adhering to the synchronization means depending on the installation location of the power generation device (for example, an area or country with a desert) and the weather conditions (for example, sandstorm, strong wind). Therefore, it is possible to avoid a situation in which it becomes difficult to drive the power generation device due to the sand adhering to the synchronization means.

A secondary object of the present invention is that the tension of the synchronization means can be easily adjusted when the synchronization means is wound around the rotation axes of the plurality of leg-shaped support portions. In addition, each leg-shaped support portion is prevented from shaking or falling due to a strong wind.

The photovoltaic power generation device includes a base portion having a predetermined shape installed on a flat surface, a plurality of leg-shaped support portions fixed to the upper surface of the base portion at predetermined intervals, and these leg-shaped support portions. A solar panel provided at the upper end of each rotating shaft in an inclined state, and a wire-shaped synchronizing means wound around the outer peripheral surface of each rotating shaft at least once in an endless manner as a whole. A driving means provided on the base portion and having an operating rod whose protruding tip portion is connected to a part of the wire-shaped synchronizing means via a fixing means, and a driving means provided on the base portion and driven by the base portion. A control unit that controls the expansion and contraction of the operating rod of the means and a non-slip member that fixes each winding portion of the wire-shaped synchronization means are provided, and each rotation axis of the three or more leg-shaped support portions is driven. It is characterized in that the driving force of the means simultaneously rotates the leg-shaped support portion in the circumferential direction to a predetermined range via the wire-shaped synchronizing means.

In the above configuration, there is one wire-shaped synchronization means, and it is characterized by having at least one turnbuckle that connects one end portion and the other end portion in an endless manner. Further, each fixed shaft of at least three or more leg-shaped support portions is integrally connected to each other via a connecting rod.

Further, on the outer peripheral surface of each rotation axis of at least three or more leg-shaped support portions, a circumferential groove in the spiral direction in which the winding portion of the synchronization means is engaged is formed.
Further, the driving means includes an electric motor that utilizes electricity obtained from the power generation of the solar panel, and a wire is provided to the protruding tip of the operating rod that moves horizontally from the cylinder body by the driving force of the electric motor via a fixing means. It is characterized in that a part of the state synchronization means is connected.

Here, "rotation" means changing the horizontal orientation of the solar panel from one side to the other within a predetermined range in order to increase the amount of power generation per day, and returning it to the initial state orientation after displacement. Say that.

According to the present invention, the power generation device can be manufactured at a very low cost, and the power generation device can be easily and quickly assembled on site. In addition, the synchronization means can be easily wound around the rotation shafts of a plurality of leg-shaped support portions, when the synchronization means is wound around the rotation shaft, the winding portion does not slip, sand does not adhere to the synchronization means, and the like. It has an excellent effect.

1 to 11 are explanatory views showing the first embodiment of the present invention. 12 to 14 are explanatory views showing a second embodiment of the present invention. FIG. 15 is a conventional embodiment.
The schematic explanatory view from the front view of 1st Embodiment. Schematic cross-sectional explanatory view from a plan view with reference to FIG. Schematic explanatory view from the whole perspective. An exploded explanatory view of the main parts (leg-shaped support part, solar panel). Schematic explanatory view from a perspective view of a main part (wrapping part, non-slip member). Schematic cross-sectional explanatory view of a main part (non-slip member). Schematic diagram of the main part (driving means). Explanatory drawing which shows the specific structure of the driving means, the operating rod, and the fixing means. Schematic diagram of the turnbuckle of the synchronization means. The block diagram which shows an example of a control system. (A) Explanatory drawing showing one direction of the solar panel, (b) Explanatory drawing showing the other direction of the solar panel. The schematic explanatory view from the front view of the 2nd Embodiment. Schematic cross-sectional explanatory view from a plan view similar to FIG. The schematic explanatory view from the whole perspective which is the same as FIG. The schematic explanatory view from the front view which shows one conventional Embodiment.

X ... Solar power generator,
21 ... Base part, 22 ... Leg-shaped support part,
23 ... fixed base, 24 ... fixed shaft,
25 ... Rotating shaft, 26 ... Connecting rod,
31 ... Wire-shaped synchronization means, 32 ... Winding site,
33 ... Turnbuckle, 35 ... Non-slip member,
41 ... Solar panel,
43 ... Fixing means, 50 ... Control unit,
61 ... Drive means, 63 ... Power generation motor,
65 ... Cylinder body, 66 ... Threaded rod,
67 ... Working rod.

The first embodiment of the present invention will be described with reference to FIGS. 1 to 11. First, FIG. 1 is a schematic explanatory view from a front view. In FIG. 1, reference numeral 21 denotes a base portion having an arbitrary shape installed on a flat surface F such as the ground or a rooftop. The shape of the base portion 21 is an appropriate shape such as a square shape, a rectangular shape, a triangular shape, or an elliptical shape. The size of the base portion 21 is, for example, 10 m on each of the two sides. The length of one side is 10 m, but the length is not particularly limited. However, the size is such that the solar panels 41 of the plurality of photovoltaic power generation devices X (hereinafter, referred to as “power generation devices X”) installed on the base portion 21 do not interfere with each other.

In the first embodiment, for example, as shown in FIG. 2, a total of three leg-shaped support portions 22 are provided for reinforcing support on the left and right portions on the front side and the central portion on the rear side of the upper surface of the rectangular base portion 21. It is arranged together with the plate 22a. A wire-shaped synchronizing means 31 (hereinafter, referred to as "synchronizing means") of any one of one wire, one belt, and one rope is attached to each of these three leg-shaped support portions 22. When the synchronization means 31 is wound around the 25 once or a plurality of times, the synchronization means 31 looks like an isosceles right triangle-shaped endless connecting member in a plan view as a whole.

In the embodiment, the synchronization means 31 uses "one wire as a whole". As shown in FIG. 9, one wire that is connected endlessly as a whole has a turnbuckle 33 having an engaging portion 32 such as a hook or a ring that connects one end portion and the other end portion thereof. In addition, in one wire 31, the hook, ring, or other engaged portion 34 provided at one end and the engaging portion 32 on the turnbuckle 33 side provided at the other end can be engaged and disengaged. As shown in FIG. 2, it becomes an endless connecting member that connects the three leg-shaped support portions 22 to each other when used. The number of turnbuckles 33 may be "1" depending on how the synchronization means is wound (traction force or tensile force).

Next, FIG. 2 is a schematic cross-sectional explanatory view from a plan view, and the rotation shaft 25 of the three leg-shaped support portions 22 is a cross section. Further, the solar panel 41 is shown by a virtual line. Here, FIG. 4 shows one leg-shaped support portion 22.

The leg-shaped support portion 22 includes a cylindrical fixed shaft 24 whose lower end is fixed to the base portion 21 via a square fixed base plate 23, and a rotating shaft 25 that fits into the upper end portion of the fixed shaft. .. The fixed shaft 24 has a large diameter, while the rotating shaft 25 has a small diameter. Therefore, the lower end portion of the rotating shaft 25 is appropriately fitted into the upper end portion of the fixed shaft 24 by a required amount. Of course, the fitting relationship of the rotating shaft 25 may be outer fitting depending on the design.

By the way, in the embodiment, since the lower end portion of the rotating shaft 25 having a small diameter is fitted into the upper end portion of the fixed shaft 24, a flange-shaped or short-cylindrical stopper portion 25b is fixedly provided at a portion near the lower end portion. There is. Therefore, when the lower end portion of the rotating shaft 25 is fitted into the upper end portion of the fixed shaft 24, the lower end surface of the stopper portion 25b is supported by the upper end surface of the fixed shaft 24. Since the short cylindrical stopper portion 25b can rotate in the circumferential direction, a material that easily slides with respect to the upper end portion of the rotating shaft 25 is used. Further, a protrusion 25c that selectively contacts the first detection means 27 and the second detection means 28, which will be described later, is provided at the lower end of the outer peripheral surface of the one stopper portion 25b.

The solar panel 41 is provided on the upper end of each rotating shaft 25 of the leg-shaped support portion 22 in an inclined state via a mounting plate 42. The solar panel 41 is set at an arbitrary angle such as 30 degrees, 35 degrees, 40 degrees, and 45 degrees in consideration of a region and a country. In the embodiment, the solar panel 41 is fixedly provided on the rotating shaft 25 of the leg-shaped support portion 22. Of course, as in Patent Document 1, the solar panel 41 may be provided swingably at the upper end of the rotating shaft 25 via the support shaft. Further, the fixed shafts 25 of at least three or more leg-shaped support portions 22 are integrally connected to each other via a connecting rod 26 in the horizontal direction.

Further, for example, the first detection means 27 is fixed to the edge portion of the upper end portion of the fixed shaft 24 of one leg-shaped support portion 22 as a reference, while the second detection means 28 is fixed to the opposite side thereof. As these detecting means 27, 28, for example, a limit switch having sensing levers 27a, 28a is used.

Next, FIG. 5 is a schematic explanatory view from a perspective view of the winding portion 31a of the synchronization means 31 and the non-slip member 35 that fixes the substantially intermediate portion of the winding portion 31a. Further, FIG. 6 is a schematic cross-sectional explanatory view of the non-slip member 35.

In this embodiment, the winding portion 31a is wound around the outer peripheral surface 25a of the rotating shaft 25 once or a plurality of times (for example, about twice) in the spiral direction. The winding portion 31a is in a state where one side starts winding and the other side sends out at the same time corresponding to the rotation direction of the rotation shaft 25. At that time, a substantially intermediate portion of the winding portion 31a is fixed by a non-slip member 35 having a crimping or tightening function and a fixing tool 36 so that the synchronization means 31 does not slide on the outer peripheral surface 25a of the rotating shaft 25.

The non-slip member 35 is composed of, for example, an arc-shaped crimping central portion 35a and upper and lower mounting end plate portions 35b and 35b that are connected to the crimping central portion. Thus, in this embodiment, a circumferential groove 37 in the spiral direction in which the winding portion 31a of the synchronization means 31 is engaged is appropriately formed on the outer peripheral surface 25a of each of the 25 rotating shafts.

Next, FIG. 7 is a schematic explanatory view of a driving means 61, an operating rod 67 that expands and contracts in the horizontal direction by the driving force of the driving means, and a fixing means 43 that connects the protruding tip portion 67a of the operating rod and the synchronizing means 31. Is. One driving means 61 is appropriately provided on the upper surface of the base portion 21 so as to be located below a part of the synchronization means 31, for example, and the protruding tip portion 67a thereof is provided via the vertical plate-shaped fixing means 43. It is connected to a part of the synchronization means 31. Further, the control unit 50 that controls the expansion / contraction movement of the operating rod 67 is provided on the upper surface of the base portion 21 so as to support the drive box 62 of the drive means 61.

Next, FIG. 8 is a schematic explanatory view showing a specific configuration of the driving means 61 and the operating rod 67. In FIG. 8, reference numeral 61 denotes a driving means fixedly provided on the upper surface of the control box of the control unit 50, and the driving means 61 is horizontally installed in the drive box 62, for example, from the power generation of the solar panel 41. An electric motor 63 using the obtained electricity, a horizontal screw 66 having a predetermined length connected to the drive shaft 64 of the electric motor and supported by a cylindrical cylinder body 65, and screwing into the horizontal screw. A plurality of horizontal guides (for example, horizontal grooves and horizontal protrusions) 65a provided on the inner peripheral surface of the cylinder body 65 include an operating rod 67 having a predetermined length.

Then, a part of the wire 31 is connected to the protruding tip portion 67a of the operating rod 67 via the plate-shaped fixing means 43. The rotation timing, rotation amount, rotation direction, and rotation speed of the electric motor 63 of the drive means 61 are controlled by a program stored in the storage unit of the control unit 50.

In the above configuration, when the electric motor 63 is activated, the rotational motion of the horizontal screw rod 66 is transmitted to the horizontal operating rod 67 via the male and female screwed portions, and the operating rod 67 is transmitted to the horizontal operating rod 67 of the cylinder body 65. Make a linear motion through. Therefore, the operating rod 67 expands and contracts in the horizontal direction in response to the forward and reverse rotations of the electric motor 63.

Next, FIG. 10 is a block diagram showing an example of a control system. The control unit 50 is installed on the upper surface of the base unit 21 as described above. The control unit 50 acquires the detection signals detected by the first detection means 27 and the second detection means 28, respectively, via the input unit 50a. The control unit 50 has a storage unit that stores an arithmetic processing unit, a main program, a work program, and the like, a timekeeping unit, and a determination unit, and outputs a determination result to the drive means 61 via the output unit 50b.

Since each of the detection signals of the first detection means 27 and the second detection means 28 is a "stop signal" for the control unit 50 to stop the drive means 61, the control unit 50 is based on the count information from the timekeeping unit. After a lapse of a predetermined time, the driving means 61 controls the rotation direction as "from forward rotation to reverse rotation" or "from reverse rotation to forward rotation".

Therefore, the drive means 61 is controlled to start and stop by the control signal of the control unit 50. Desirably, the control unit 50 sends a drive signal to the drive means 61 intermittently (for example, every 15 minutes, every 30 minutes, every hour) to rotate the solar panel so as to gradually track the sun.

FIG. 11A shows one direction (morning) of the solar panel 41 with respect to the sun S. On the other hand, FIG. 11B shows the other direction (afternoon) of the solar panel 41 with respect to the sun S. In this way, it is possible to increase the amount of power generation per day.

Different forms for carrying out the invention

The second embodiment shown in FIGS. 11 to 14 will be described. The main difference between the photovoltaic power generation device X of the second embodiment and the first embodiment is that the number of leg-shaped support portions is "4". If the number of leg-shaped support portions 22 can be increased to "5" or "6" and the rotation shafts 25 of each leg-shaped support portion can be rotated together by the endless synchronization means 31, the leg-shaped support portions 22 can be rotated together. The number of parts 22 may be set to "5" or "6". Further, the shape and structure of the non-slip member 35 can be appropriately redesigned. Even with this configuration, the main subject of the present invention can be achieved.

The wire-shaped synchronization means 31 of the embodiment is wound around endlessly, but the wire-shaped synchronization means 31 connected in an endless manner may be one or a plurality (for example, two). When the two wire-shaped synchronization means 31 are wound around each rotating shaft of the leg-shaped support portion in an endless manner, the two wire-shaped synchronization means 31 are connected horizontally to one or more fixing means.

The present invention is installed on a flat surface on the ground, for example, and is used as a photovoltaic power generation device.

Claims (5)

A base portion having a predetermined shape installed on a flat surface, a plurality of leg-shaped support portions fixed to the upper surface of the base portion at predetermined intervals, and the upper end of each rotation axis of these leg-shaped support portions. A solar panel is provided on each of the portions in an inclined state, a wire-shaped synchronization means that is wound around the outer peripheral surface of each of the rotating shafts at least once and is wound around endlessly as a whole, and a base portion. And one driving means having an operating rod whose protruding tip portion is connected to a part of the wire-shaped synchronizing means via a fixing means, and expansion and contraction of the operating rod provided on the base portion and the driving means. A control unit for controlling the movement and a non-slip member for fixing each winding portion of the wire-shaped synchronization means are provided, and each rotation axis of the leg-shaped support portion is subjected to the wire-like synchronization by the driving force of the driving means. A photovoltaic power generation device that simultaneously rotates to a predetermined range in the circumferential direction of the leg-shaped support portion via means. The photovoltaic power generation device according to claim 1 has one wire-shaped synchronization means, and has at least one turnbuckle that connects one end and the other end in an endless manner. Photovoltaic device. The photovoltaic power generation device according to claim 1, wherein each fixed shaft of at least three or more leg-shaped support portions is integrally connected to each other via a connecting rod. In the photovoltaic power generation device of claim 1, on the outer peripheral surface of each rotation axis of at least three or more leg-shaped support portions, a circumferential groove in the spiral direction in which the winding portion of the synchronization means is engaged is formed. A photovoltaic power generation device characterized by being present. In the photovoltaic power generation device of claim 1, the driving means includes an electric motor that utilizes electricity obtained from the power generation of the solar panel, and the driving force of the electric motor causes the operating rod to move forward and backward in the horizontal direction from the cylinder body. A photovoltaic power generation device characterized in that a part of a wire-shaped synchronizing means is connected to a protruding tip portion via a fixing means.

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