JP2016021847A - Pipe structure for installing photovoltaic power generation panel and assembly method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe structure for installing a photovoltaic power generation panel having a wide frontage and to provide an assembly method of the same.SOLUTION: The pipe structure for installing a photovoltaic power generation panel for installing the photovoltaic power generation panel by raising it from the ground includes a circular arc-shaped arch part (4) to be fixed at a middle point of a beam (31) along a long side of a rectangle in plan view and both poles (2). The frontage may be as wide as 10 m. By fixing the beam (31) along a short side of the rectangle, the arch part (4), and the beam (31) along the long side of the rectangle in this order, accurate and easy assembly is possible.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pipe structure for installing a photovoltaic power generation panel and an assembling method thereof.

  For example, various types shown in Patent Document 1 and Patent Document 2 are known that use a columnar material such as a pipe material as a mount for installing a photovoltaic power generation panel.

  In recent years, solar power generation has been widely performed in farmland, parking lots, etc. without providing a dedicated space for installing a solar power generation panel. In this case, a pipe material in which sunlight reaches the inside of the gantry is preferred (especially in farmland).

  It is preferable to widen the frontage (the interval between the columns in at least one direction) in order to take in and out tractors and the like in farmland and in and out of cars in parking lots. However, when using a pipe material to construct the gantry, it has been difficult to widen the frontage. The pipe material is limited to a predetermined length (hereinafter referred to as the “design maximum length”) or less, and it is necessary to install the struts at an interval less than the design maximum length of the upper pipe material where the photovoltaic power generation panel is installed. Because there is. Although it is possible to lengthen the pipe material by joining it with a joint, in this case, the strength to support the weight of the photovoltaic power generation panel could not be maintained.

JP 2014-031627 A JP 2014-034760 A

Aoki et al. "Effects of snow surface reflection on the amount of power generated by solar cells"

  This invention makes it a subject to provide the pipe structure for photovoltaic power generation panel installation which has a wide frontage, and its assembly method.

The pipe structure for installing the photovoltaic power generation panel of the present invention is
A photovoltaic panel installation pipe structure for lifting and installing a photovoltaic panel from the ground,
A lower beam and an upper beam provided on each of the four sides of the rectangle in plan view;
A column member connecting the lower beam and the upper beam along the long side of the rectangle;
Four struts for lifting the lower and upper beams from the ground at the top of the rectangle;
An arch portion fixed to the midpoint of the lower beam along the long side and the two struts arranged at both ends of the long side;
A bearing that is fixed to the upper beam and that inserts a rotating shaft that fixes the photovoltaic power generation panel;
The long side of the rectangle has a length of a widening length larger than the maximum design length of the pipe,
The short side of the rectangle has a length smaller than the maximum design length of the pipe;
The arch portion has an arc shape having a radius of 80% to 120% of the widening length,
There is no support other than the four support pillars, or at least one of the two long sides has a section having a length longer than the maximum design length without a support pillar at the center.

The lower and upper beams along the long side are joined by a joint, not by a single pipe. For this reason, the strength is insufficient as it is. Strength is maintained by the arch part. The arch part is different from the bracing and reaches the midpoint of the lower beam. The lower beam can be supported stably and the strength can be maintained.
In addition, the photovoltaic power generation panel is supported by the upper beam, and disturbance force due to wind pressure or the like on the photovoltaic power generation panel is not concentrated locally on the lower beam.

The pipe structure for installing the photovoltaic power generation panel of the present invention is
The arch comprises at least three parts joined by an arch joint,
The arch joint is provided at a location different from the location corresponding to the midpoint of the lower beam.

  The arch is also longer than the maximum design length and is joined by a joint. Do not provide a joint at the place that supports the lower beam, and ensure strength.

The pipe structure for installing the photovoltaic power generation panel of the present invention is
The lower end of the arch portion has a straight portion parallel to the support column.

  By supporting the force from the lower beam at the center of the arch part, a force in the direction of extending the arch part (in the direction of separating two struts coupled to the arch part) is applied to both lower ends of the arch part. Such a force is more easily supported by the support column when the support column and the arch portion are parallel than when the support column and the arch portion are coupled at a single point at an angle. It is also possible to connect the support column and the arch portion at two or more places as required.

The pipe structure for installing the photovoltaic power generation panel of the present invention is
The base end of the column includes three or more anchors opened downward in different directions.

  The above-described horizontal force and the vertical force (in the direction of pulling out the support column) are applied to the base end of the support column due to the above-described horizontal force and wind pressure applied to the photovoltaic power generation panel. This force is supported by firmly fixing the proximal end. On the other hand, it is not preferable to use a large concrete material or the like particularly in farmland. It is a member that is not so large and is fixed so as not to obstruct the flow of water at the proximal end.

The pipe structure for installing the photovoltaic power generation panel of the present invention is
The bearing is provided on the upper beam along the long side of the rectangle;
All the bearings are provided close to the upper end of the column member.

  The bearing supports the weight of the solar panel. The strength of the upper beam at the bearing location is supplemented by the column member. Here, “in close proximity” includes not only the contact between the bearing and the column member but also the one within a distance of 100 mm.

The pipe structure for installing the photovoltaic power generation panel of the present invention is
A rotating shaft having a rotating arm that penetrates the bearing and is bent and extended at at least one end;
A rotation control rod that connects the rotating arms of the two or more rotating shafts to move in the same direction;
The two or more rotation axes are provided in parallel,
The rotation control rod is a rod-like body extended in a direction perpendicular to the axial direction of the rotation shaft.

  The rotating shaft rotates by moving the rotation control rod. Approximately 180 degrees of rotation is possible.

The photovoltaic power generator of the present invention is
Using the above-described solar power generation panel installation pipe structure provided with a rotation arm and a rotation control rod, a solar power generation apparatus having a solar power generation panel attached to the rotating shaft,
The elevation angle of the light receiving surface of the photovoltaic power generation panel is characterized in that it changes in a range of at least 0 degrees to 60 degrees as the rotating shaft rotates.

  Here, the “elevation angle” refers to an angle formed by a normal line of the light receiving surface and a horizontal plane. It is 90 degrees when the light receiving surface faces the zenith (directly above), and 0 degrees when the light receiving surface is vertical. Normally, the elevation angle is adjusted to the sun direction during the south-central time or slightly smaller. On the other hand, as described later, it is preferable that the elevation angle can be set to 0 degrees or less in a snowfall area.

The photovoltaic power generation method of the present invention is
Using the above-mentioned solar power generation device,
When the snow falls, the elevation angle is set to 0 degrees or less.

  When it snows, the elevation angle should be 0 degree or minus to prevent snow accumulation on the light receiving surface. When it is not snowing, any elevation angle may be used.

The method of assembling the pipe structure for installing the photovoltaic power generation panel of the present invention,
A method for assembling a pipe structure for installing the above photovoltaic power generation panel,
Placing the base end of the support;
Fixing the lower beam and the upper beam along the short side of the rectangle to the column;
Fixing the arch portion to the support column;
The step of fixing the lower beam along the short side of the rectangle to the support column and the arch portion is performed in this order.

  After fixing the lower beam and upper beam along the short side of the rectangle first and fixing the arch portion, the lower beam and upper beam along the long side of the rectangle are fixed. The midpoint position of the lower beam along the long side of the rectangle is indicated by the arch part. The lower beam along the long side of the rectangle is long, but it is easy to fix it precisely horizontally.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the photovoltaic power generation panel installation pipe structure which has a wide frontage, and its assembly method.

FIG. 1 is a diagram showing a pipe structure for installing a photovoltaic power generation panel. FIG. 2 is a diagram showing a pipe structure for installing a photovoltaic power generation panel. FIG. 3 is a diagram illustrating an arch portion. FIG. 4 is a diagram showing an anchor. FIG. 5 is a diagram illustrating the rotation mechanism.

  Hereinafter, Example 1 which shows the pipe structure for solar power generation panel installation, and Example 2 which shows assembly of the pipe structure for solar power generation panel installation are demonstrated.

(Summary of pipe structure for installing photovoltaic panels)
FIG. 1 is a diagram showing a pipe structure for installing a photovoltaic power generation panel. The solar power generation panel installation pipe structure 1 includes four columns 2, and anchors 21 are provided at the base ends of the columns 2. The support | pillar 2 is installed in the location of the four vertexes of a rectangle. The long side of the rectangle has a length of 10,000 mm, and the short side has a length of 5000 mm.

  A lower beam 31 and an upper beam 32 are fixed to the upper part of the column 2. A column member 33 is provided between the lower beam 31 and the upper beam 32 along the long side of the rectangle to reinforce the entire beam. The maximum design length of the pipe is 6000 mm, and the beam along the long side cannot be constituted by one pipe, and two pipes are connected by a joint.

  The midpoint of the lower beam along the long side of the rectangle is fixed by the arch portion 4. The arch portion 4 is formed by connecting three pipes by a joint 43. The lower end of the arch portion 4 is fixed to the support column 2 by a clamp 7.

  Three bearings 51 are provided on the upper beam along the short side of the rectangle. The number of bearings may be two or four or more instead of three. A rotation shaft (not shown) is inserted into the bearing 51, and the photovoltaic power generation panel 6 is attached to the rotation shaft. In the figure, there is a rotating shaft hidden under the photovoltaic power generation panel 6. Three rotating arms 52 that are curved from the rotating shaft and face downward are connected by a connecting member 53. By operating the connecting arm 53, the angles of all the solar cell panels 6 can be changed uniformly.

(Deformation of pipe structure for installing photovoltaic panels)
FIG. 2 is a diagram showing a pipe structure for installing a photovoltaic power generation panel. 1 is that the bearing 51 is provided on the upper beam along the long side of the rectangle (the short side in FIG. 1). The bearing 51 is provided in contact with the column member 33. A force due to the weight of the photovoltaic power generation panel and wind pressure is applied to the bearing, but the strength is supplemented by the pillar member. Since the beam along the long side is joined by a joint (unlike the beam along the short side), it is important to supplement the strength.

  In FIG. 2, the dimension of each part was shown by the number (mm unit). A frontage is provided with a height of 2600 mm or more and a width of 10,000 mm.

(Arch structure)
FIG. 3 is a diagram illustrating an arch portion. The arch portion 4 is formed by connecting one central pipe 41 and two lower pipes 42 with a joint 43. The central pipe 41 has an arc shape with a radius of 10000 mm, and its length is 5060 mm. The lower pipe 42 includes, in order from the bottom, a 2000 mm straight portion, a 1730 mm small radius (1500 mm) arc portion, and a 1670 mm radius 10000 mm arc portion, and the overall length is 5400 mm. Both the central pipe 41 and the lower pipe 42 are shorter than 6000 mm, which is the maximum design length of the pipe, and can be made of one pipe.

  A joint 43 having a length of 600 mm is used for coupling the central pipe 41 and the lower pipe 42. The joint 43 is linear, but the displacement between the ends of the arc of 600 mm in length and the center is only about 5 mm in a circle with a radius of 10000 mm, and the center pipe 41 and the lower pipe 42 can be inserted into the joint 43 without any problem. . Although unnecessary, the joint 43 may be curved so as to have a displacement of 5 mm.

  As shown in FIG. 1, the midpoint of the central pipe 41 and the midpoint of the lower beam 31 along the long side of the rectangle are fixed. Thereby, the lower beam 31 is stabilized. Compared to the case where the end of the lower beam 31 is fixed by bracing, the midpoint is fixed, so the force applied to the lower beam 31 is applied to both the support and the fixed midpoint (both sides of the portion where the force is applied). ) The lever principle does not generate a great force. Moreover, if the joint used for the coupling | bonding of the lower beam 31 is provided in a midpoint, there will be no joint other than the fixed location, and big intensity | strength can be acquired.

  The straight portion of the lower pipe 42 is fixed to the support column. Since the straight portion is parallel to the support column, it can be fixed using two (or three or more) clamps 7 as shown in FIG. And the force applied to the arch part 4 from the lower beam 31 acts in the direction orthogonal to the arch part 4 at the intersection of the arch part 4 and the support column 2, but this direction is a direction horizontal to the ground. Since it does not become the force which pulls out the support | pillar 2, it becomes a stable structure.

(Anchor structure)
FIG. 4 is a diagram showing an anchor. (A) is the figure seen from the top, (B) is the figure seen from the side. Three anchors 21 (21a, 21b, and 21c) are provided at the base end of the support column 2. Actually, the column is fixed to the pipe with the three anchors 21 fixed by inserting screws or the like, but the anchor 21 may be directly fixed to the column 2.

  The three anchors 21 are each fixed to the support column 2 at an interval of 120 degrees and open downward. The three anchors will be open at different angles that differ by 120 degrees. The anchor 21 has a length of 150 mm. With this structure, resistance to the force of pulling out the support and resistance to defeating the support (in all directions around 360 degrees around the support) are increased.

  Moreover, it is a small metal part and does not block the water flow and is suitable for use in farmland.

(Rotation of solar power generation panel)
FIG. 5 is a diagram illustrating the rotation mechanism. A rotating shaft is inserted into the bearing 51, and the photovoltaic power generation panel 6 is installed thereon (the rotating shaft is not shown). The three rotating arms 52 connected to the rotating shaft are bent about 90 degrees with respect to the rotating shaft. This is realized by providing a bent bearing 51 at the end of the straight tubular rotating shaft and inserting a straight tubular rotating arm 52 into the bearing 51. The rotating arms 52 are coupled to each other by a rotation control rod 53.

  It is assumed that the rotation arm 52 and the rotation control rod 53 are at the positions indicated by solid lines in the drawing. Solar cell panel 6 faces the direction indicated by the solid line. Here, when the rotation control rod 53 is moved in the linear direction indicated by the black arrow, the rotary arm 52 rotates in the circular direction indicated by the black arrow within the bearing, and the rotation is transmitted to the rotary shaft to change the angle of the solar cell panel 6. . The changed state is indicated by a dotted line.

  The tips of all the operation bars 52a (ends opposite to the rotation arm 52) are moved by an equal distance by the rotation control rod 53, and all the rotation arms 52 are rotated by an equal angle. It is possible to change the angles by aligning the angles of all the solar cell panels 6.

  According to this structure, the rotating arm can rotate approximately 180 degrees from the left side to the right side of the rotating shaft. The elevation angle of the light receiving surface of the photovoltaic power generation panel (the elevation angle in the state indicated by the dotted line is indicated by θ) can be changed by approximately 180 degrees.

  Hereinafter, a method of photovoltaic power generation in a snowfall area will be described. As shown in Example 1, a photovoltaic power generation panel installation pipe structure is provided, and the photovoltaic power generation apparatus is configured by attaching the photovoltaic power generation panel to the rotating shaft.

  Since the elevation angle of the light receiving surface can be changed by approximately 180 degrees, the minimum elevation angle can be set to 0 degrees or less even when the maximum elevation angle is set to 78 degrees (the direction of the sun in the middle of the sun during the summer solstice in Japan).

  As a characteristic problem in snowfall areas, power generation efficiency may be reduced when snow falls on the light receiving surface. Moreover, when the accumulated snow freezes, it is not easy to remove. Therefore, it is often preferable to prevent snow accumulation on the light receiving surface even if the power generation amount temporarily decreases.

  Snow accumulation can be prevented by setting the elevation angle to the light receiving surface to 0 ° or less (the light receiving surface is vertical or downward). Therefore, the elevation angle to the light receiving surface is set to 0 degrees or less during snowfall (refers to the time when snow is falling from the sky. Even if snow has been accumulated due to past snowfall, it is not during snowfall).

  Even when the elevation angle is 0 degree, there is a solar cell that can generate a relatively large amount of power if there is light reflection due to snow (see Non-Patent Document 1). A certain amount of power can be generated even during snowfall.

  It should be noted that the elevation angle during non-snowfall may be determined in consideration of the characteristics of each region because the direction of maximizing the amount of power generation varies depending on the snow cover condition.

  Hereinafter, the assembly procedure of the pipe structure for installing the photovoltaic power generation panel of FIG. 1 will be described.

  First, the anchor 21 is driven and the support 2 is installed. Thereafter, the lower beam 31 and the upper beam 32 along the rectangular short side are fixed to the column 2.

  Here, before fixing the beam along the long side of the rectangle, the arch portion 4 is fixed to the column 2. It is assumed that the arch portion 4 is configured by being connected by a joint 43 in advance. Fixing to the column 2 is performed by two clamps 7 for each column 2 and four for each arch portion 4. Since the shape and size of the arch portion are known, the arch portion 4 can be fixed according to the height of the lower beam along the long side of the rectangle of the arch portion 4.

  Next, the lower beam 31 along the rectangular short side is fixed. First, the lower beam 31 and the arch portion 4 are fixed. As a result, the center of the lower beam 31 is fixed at the correct height. Thereafter, the lower beam 31 is fixed to the support column. According to this procedure, the work for keeping the lower beam 31 horizontal can be easily performed without performing the work on the upper part (for example, on a stepladder). It should be noted that the post 2 can be fixed first and the arch portion 4 can be fixed later by marking the post 2 in advance with a place where the lower beam 31 is fixed.

  Next, the auxiliary beam (a beam parallel to the short side at the center of the long side of the rectangle) is fixed, and the column member 33 is installed. Thereby, it becomes a structure which supports the weight of the photovoltaic power generation panel 6.

  Finally, the bearing 51 is installed, the rotating shaft is passed through the bearing, the rotating arm 52 is installed, and the rotating arm 52 is connected by the connecting member 53.

  Thus, the assembly of the pipe structure for installing the photovoltaic power generation panel is completed. Then, what is necessary is just to attach the photovoltaic power generation panel 6 to a rotating shaft.

  The pipe structure for installing a photovoltaic power generation panel of the present invention can have a wide opening. It can be used by many farmers and parking operators.

  The photovoltaic power generation apparatus and method of the present invention can prevent snow accumulation on the light receiving panel by setting the elevation angle to 0 degrees or less. It can be used in snowy areas.

  The method of assembling a pipe structure for installing a photovoltaic power generation panel of the present invention can be easily assembled without requiring high skills. It can be used by many contractors.

DESCRIPTION OF SYMBOLS 1 Photovoltaic panel installation pipe structure 2 Support | pillar 21 Anchor 31 Lower side beam 32 Upper side beam 33 Column member 4 Arch part 51 Bearing 52 Rotation arm 53 Rotation control rod 6 Photovoltaic generation panel

Claims (9)

A photovoltaic panel installation pipe structure for lifting and installing a photovoltaic panel from the ground,
A lower beam and an upper beam provided on each of the four sides of the rectangle in plan view;
A column member connecting the lower beam and the upper beam along the long side of the rectangle;
Four struts for lifting the lower and upper beams from the ground at the top of the rectangle;
An arch portion fixed to the midpoint of the lower beam along the long side and the two struts arranged at both ends of the long side;
A bearing that is fixed to the upper beam and that inserts a rotating shaft that fixes the photovoltaic power generation panel;
The long side of the rectangle has a length of a widening length larger than the maximum design length of the pipe,
The short side of the rectangle has a length smaller than the maximum design length of the pipe;
The arch portion has an arc shape having a radius of 80% to 120% of the widening length,
The sun having no struts other than the four struts or having a section having a length equal to or longer than the maximum design length without a strut at the center of at least one of the two long sides. Pipe structure for installing photovoltaic panels. The arch comprises at least three parts joined by an arch joint,
The pipe structure for installing a photovoltaic panel according to claim 1, wherein the arch joint is provided at a location different from a location corresponding to a midpoint of the lower beam.   The pipe structure for installing a photovoltaic power generation panel according to claim 2, wherein a straight part parallel to the support column is provided at a lower end of the arch part.   The pipe structure for installing a photovoltaic power generation panel according to any one of claims 1 to 3, wherein the base end of the support column includes three or more anchors opened downward in different directions. The bearing is provided on the upper beam along the long side of the rectangle;
All the said bearings are provided close to the upper end of the said column member, The pipe structure for photovoltaic power generation panel installation of any one of Claims 1-4 characterized by the above-mentioned. A rotating shaft having a rotating arm that penetrates the bearing and is bent and extended at at least one end;
A rotation control rod that connects the rotating arms of the two or more rotating shafts to move in the same direction;
The two or more rotation axes are provided in parallel,
The pipe structure for installing a photovoltaic power generation panel according to claim 5, wherein the rotation control rod is a rod-like body extending in a direction perpendicular to the axial direction of the rotation shaft. A solar power generation apparatus using the solar power generation panel installation pipe structure according to claim 6, wherein the solar power generation panel is attached to the rotating shaft,
The solar power generation device according to claim 1, wherein an elevation angle of a light receiving surface of the solar power generation panel changes in a range of at least 0 degrees to 60 degrees as the rotating shaft rotates. Using the solar power generation device according to claim 7,
A solar power generation method, wherein the elevation angle is set to 0 degrees or less during snowfall.
A method for assembling a pipe structure for installing a photovoltaic power generation panel according to any one of claims 1 to 6,
A step of placing the base end of the column.
Fixing the lower beam and the upper beam along the short side of the rectangle to the column;
Fixing the arch portion to the support column;
A method of assembling a pipe structure for installing a photovoltaic power generation panel, wherein the step of fixing the lower beam along the short side of the rectangle to the support column and the arch portion is performed in this order.