JP3185608U - Base for solar cell module - Google Patents

Abstract

A pedestal that supports a solar cell module and is easy to construct and maintain.
A gantry block 10 placed on an installation surface, having a rectangular bottom wall, a front wall extending upward from one edge of the bottom wall, and one edge of the bottom wall A frame block integrally extending with a rear wall higher than the front wall and extending upward from an edge opposite to the frame, and a pair of support bars fixed to the frame block using fixing tools 20 and 20 ' 30 and a pair of support bars on which the solar cell module 2 is placed, the gantry block is made of precast concrete, and the bottom area of the bottom wall of the gantry block is 0.4 m ² to 1.0 m. ^The ratio of the bottom area of the bottom wall to the surface area of the solar cell module is in the range of 1: 1 to 1: 3, and supports a single solar cell module.
[Selection] Figure 1

Description

  The present invention relates to a gantry for supporting a solar cell module, and more particularly to a gantry for a solar cell module that is easy to construct and excellent in maintainability.

  In recent years, solar power generation systems called clean energy have attracted attention. Following the start of the renewable energy feed-in tariff system, there is a growing interest in the introduction of large-scale solar power generation facilities, so-called mega solar and giga solar. In addition to the installation of solar cell modules (solar cell panels) on sloped roofs, flat roofs, etc., there is an increasing demand for installation on the ground, and there is an increasing demand for mounting foundations for ground installation.

  When installing solar cell modules on flat ground (paved or unpaved surfaces) instead of inclined surfaces such as sloped roofs, construct a foundation structure made of reinforced concrete at multiple locations on the installation surface. In general, a base for supporting the solar cell module is bridged and fixed on the basic structure. The gantry is usually formed by assembling shaped steel materials into a frame shape or a truss shape. However, in order to construct the foundation structure, it is necessary to lay concrete formwork and place concrete on the installation site, which takes time and effort.

  There is a demand for a pedestal that can sufficiently withstand severe wind loads such as typhoons and snow loads while reducing the amount of members, reducing the cost for construction, and shortening the construction period.

  2. Description of the Related Art Conventionally, a solar cell module installation stand having a simple installation structure including a plurality of blocks and a base body that supports the solar cell module made of a plurality of frame members provided on these blocks has been proposed. (Japanese Patent Laid-Open No. 11-177114: Prior Literature 1). In the gantry, each block serving as a pedestal of the gantry body has a low center-of-gravity load on the gantry body and functions as a counterweight for the wind load. The gantry is arranged vertically and horizontally on each frame material of the gantry body. Multiple solar panels were installed.

  Further, conventionally, a solar cell array has been proposed in which a basic block made of a heavy object mainly composed of a lump of concrete that is not divided into a plurality of locations is used as a basic block that supports a frame of a solar cell panel (Japanese Patent Laid-Open No. 2012). -160764: Prior literature 2). The solar cell array is formed by combining a plurality of rod-shaped structural materials on a foundation block via anchor bolts or the like planted in concrete, and joining a frame or a truss to form a frame, In order to prevent the total surface area of the solar cell module from being reduced, the installation area of the basic block was smaller than the horizontal projection area of the solar cell modules within several sheets.

Conventionally, as a support frame on which a solar cell panel can be easily installed on an installation surface such as the ground, it has a flat bottom wall and a vertical wall erected upward from one end of the bottom wall. 2 L-shaped blocks which are formed in a letter shape and have different vertical wall heights and are arranged so that the vertical walls face each other substantially in parallel and the other end portions of the bottom wall face each other inwardly. Two L-shaped blocks;
The support frame is installed to be inclined at the upper ends of the vertical walls of both blocks and the two opposing bottom walls, and a part or all of them are superimposed on the wall surfaces of the respective bottom walls. There has also been proposed a solar cell panel support frame device that includes a connecting plate that is connected to a wall and integrates two L-shaped blocks. (Utility Model Registration No. 3172512 Publication: Prior Literature 3)

JP 11-177114 A JP 2012-160764 A Utility Model Registration No. 3172512

  The conventional gantry uses a plurality of basic blocks, or in order to construct the gantry, a plurality of rod-like structural materials are combined and joined in a frame shape or a truss shape. The work was not sufficiently labor-saving.

  In addition, conventional pedestals generally have a plurality of solar cell modules (a plurality of solar cells (solar cell elements) arrayed and protected by a resin, tempered glass, etc. and packaged in a minimum unit) in a planar shape. Since the structure was supported by tilting the arrangement, in snowy areas, the amount of snow accumulation increased in proportion to the number of steps (height) of the solar cell modules, and the snow fell below the gantry. As the number increased, the height of the gantry became necessary. As a result, there has been a problem that the construction cost of a solar cell array (an assembly comprising a gantry and / or foundation and the like and a single solar cell module or a plurality of solar cell modules) increases.

  Furthermore, the snow on the solar panel supported by the gantry and the rainwater flowing on the panel fell directly from the panel onto the ground. As a result, water was accumulated in the pit where the ground was shaved, and there was a risk that the drainage would worsen.

A pedestal for supporting a solar cell module according to the present invention that solves the above problems is a pedestal block placed on an installation surface, and includes a rectangular bottom wall and one edge of the bottom wall. A gantry block integrally comprising a front wall extending upward and a rear wall higher than the front wall extending upward from an end edge facing one end edge of the bottom wall; and A pair of support bars fixed using a fixture, and a pair of support bars on which the solar cell module is placed, wherein the gantry block is made of precast concrete, and the bottom of the bottom wall of the gantry block A single solar cell module having an area in the range of 0.4 m ² to 1.0 m ² and a ratio of the bottom wall to the surface area of the solar cell module in the range of 1: 1 to 1: 3; It is characterized by supporting.

  Since the gantry is configured as described above, the gantry block itself serves as the gantry foundation and gantry, and the labor of the foundation work can be saved and the gantry assembling process can be simplified.

  The gantry block is made of precast concrete containing reinforcing bars, and can be used as a gantry foundation by using the weight of the gantry block. In addition, by using a precast concrete gantry block formed in a predetermined shape in advance, there is no need to perform ready-mixed concrete on-site, and it is easy to transport a gantry block manufactured in a factory to the site. Construction is possible.

  The gantry according to the present invention is characterized in that a single gantry supports a single solar cell module to constitute a solar cell array. By doing in this way, even when installing in a snowy region, snow accumulation on the solar cell array is suppressed, so that the height of the solar cell array can be suppressed and the cost can be reduced. Moreover, even when installing in an area where there is no snow (small), the cost increase due to modularization can be suppressed by pre-casting the gantry. Further, by modularization, a desired number of mounts and a corresponding desired number of solar cell modules can be arranged with a high degree of freedom in accordance with the size and shape of the construction site.

The gantry according to the present invention can be installed on the ground having a ground strength of about 1.0 t / m ² . By integrating the bottom wall, the front wall, and the rear wall into a foundation / stand, it is possible to make a solar cell array with sufficient wind pressure resistance while saving labor for foundation leveling even on relatively soft ground. it can.

  Even if it is easy to cause unequal subsidence over time on soft ground or the like, the gantry according to the present invention does not damage the gantry or the solar cell module due to accumulation of internal stress due to imbalance in subsidence.

  By associating the solar cell module with the mount on a one-to-one basis, when the module breaks down, it can be easily attached and detached, the surface of the module can be easily cleaned, and a solar cell array excellent in maintainability can be obtained. .

  In addition, when the solar cell array is removed due to the end of the fixed purchase period, it is easy to recover the state before construction.

  In the gantry according to the present invention, the front wall of the gantry block has an upper surface and front, rear, left and right side surfaces extending between the upper surface and the bottom wall, and the front side surface of the front wall projects forward as it goes downward. It is characterized by. By doing in this way, the solar cell module mounted in a mount can be arrange | positioned back rather than at least one part of a front side surface.

  The fixture used for the gantry according to the present invention includes an insert anchor that is embedded and mounted when the gantry block is concrete-cast. By doing in this way, construction is possible in a short time with a simple work on site.

  In the solar cell array in which the solar cell module is supported on the gantry according to the present invention, at least a part of the front side surface of the front wall is located outside the horizontal projection area of the solar cell module. By doing in this way, it can prevent that the snow cover and rain water of the upper surface of a solar cell module fall on the ground along a front side surface, and fall directly on the ground.

  The weight of the gantry block according to the present invention is in the range of 400 kg to 800 kg. By doing in this way, a mount block can function as an anchor with respect to a wind load.

  According to the platform for the solar cell module according to the present invention, the integrated shape and weight of the platform block can be used to be placed on the ground to serve as a foundation and platform, and at the installation location of the solar cell array It is possible to save labor in the foundation work process and the base assembly process, and to reduce costs.

  In addition, since the pair of support bars firmly connected to the gantry block supports the solar cell module, the gantry has a simplified structure and has a high strength that can withstand external forces such as strong wind, snow, or earthquake shaking. can do.

  Furthermore, the characteristic structure of the front wall of the gantry block prevents rainwater and snow flowing down from the surface of the module from falling directly on the ground, so it can be used on installation surfaces where concrete foundations are not placed, for example, soil ground Even if it exists, it can prevent that the ground of one side of a solar cell module is shaved with age.

  Furthermore, by making the solar cell modules and the bases correspond one-to-one (modularization), the height of the solar cell array can be suppressed even in areas with a lot of snow, cost is reduced, and maintenance is excellent. It can be a stand.

FIG. 1 is a side view of a solar cell module mount according to one embodiment of the present invention. FIG. 2A is a side view schematically showing a gantry according to the present invention. FIG. 2B is a front view schematically showing a gantry according to the present invention. FIG. 2C is a plan view schematically showing a gantry according to the present invention. FIG. 3A is a schematic view of a fixture on the front wall. FIG. 3B is a schematic view of a fixture on the rear wall.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The drawings are simplified for illustration and the scales do not necessarily coincide.

  A gantry 1 according to one embodiment of the present invention is shown in FIG. The gantry 1 includes a concrete gantry block 10 placed on an installation surface GL (a flat ground surface) or the like, and a pair of left and right support bars (fixed to the gantry 10 using a fixing tool 20). Vertical rails 30 and 30 (see FIG. 2B and the like). The solar cell module 2 is placed over the pair of support bars 30 and 30 and attached to the pair of support bars 30 and 30 by a mounting bracket (not shown).

  The solar cell module 2 is generally arranged on the gantry 1 so that the inclined upper surface (light receiving surface) 2s faces the south side. The tilt angle is preferably in the range of about 20 degrees to about 40 degrees. The inclination angle is not limited to the above range, and an optimum angle can be appropriately selected by adjusting the shape of the gantry block or the metal fittings depending on the latitude of the installation location of the solar cell array. In the following description, the direction in which the inclined upper surface 2s of the solar cell module 2 faces is the front, and the opposite is the rear.

2A to 2C, the gantry block 10 is made of precast concrete formed in a predetermined shape in advance. The gantry block 10 includes a reinforcing bar selected according to the overall shape. The concrete applied to the gantry block 10 may be general cement concrete, and may be asphalt concrete or resin concrete. For the gantry block 10, for example, ordinary concrete having a specific gravity of 2.3 kg / m ³ can be used.

  The gantry block 10 includes a rectangular bottom wall 11, a front wall 12 extending upward from the front edge of the bottom wall 11, and a rear wall 13 extending upward from the rear edge of the bottom wall 11. Consists of. As appropriate, the solar cell module 2 is indicated by a two-dot chain line.

The bottom wall 11 has a predetermined thickness d, a vertical width l ₁ , and a horizontal width w. The thickness d is generally in the range of 100 mm to 200 mm, the longitudinal width l ₁ is generally in the range of 600 mm to 900 mm, and the lateral width w is generally in the range of 700 mm to 1100 mm. The bottom wall 11 has a bottom surface 11b in contact with the installation surface GL, bottom 11b has a predetermined area in accordance with the longitudinal width _{l 1} and width w.

  The front wall 12 is preferably trapezoidal in side view and square in front view, and has a lateral width equal to the lateral width w of the bottom wall 12.

The front wall 12 has parallel top 12s to the bottom 11b, the height _{h 2} from the bottom surface 11b of the upper surface 12s is generally to not 500mm in the range of 700 mm. The upper surface 12s has a lateral width w and a vertical width _{l 2.} The longitudinal width l ₂ is generally in the range of 100 mm to 150 mm.

The front wall 12 has four side surfaces (front side surface, rear side surface, left side surface, right side surface) extending between the bottom wall 11 and the upper surface 12s, and the front side surface 12a is inclined with respect to the vertical. It protrudes forward as it goes down, and faces diagonally upward. By such a front side surface 12a, when snow, rainwater, or the like on the module 2 falls downward according to the inclination of the module 2, it does not fall directly on the ground but falls along the front wall 12a.

The rear wall 13 is preferably inclined slightly rearward with respect to the vertical. Rear wall 13, has parallel top 13s to the bottom 11b, the height _{h 3} from the bottom surface 11b of the upper surface 13s is generally to not 900mm in the range of 1000 mm. Top 13s includes a lateral width w a and the vertical width _{l 3.} The longitudinal width l ₃ is generally in the range of 100 mm to 150 mm. Preferably, the vertical width l ₂ and the vertical width l ₃ are equal.

  The weight of the gantry block 10 having the materials, shapes and dimensions as described above may be in the range of about 400 kg to about 800 kg. The weight of the gantry block 10 is selected according to the design wind speed so as to function as an anchor against the negative pressure of the wind load.

  A pair of left and right support bars 30, 30 are connected to and fixed to the gantry block 10 by a pair of left and right fixtures 20, 20 ′ (see FIG. 1 and the like).

  Referring to FIGS. 3A and 3B, the fixture 20 (20 ′) preferably includes an insert 21 (21 ′) embedded in the upper surface 12s and the upper surface 13s when the concrete is placed, and the insert 21 (21 ′). An upper fixing bracket 23 (23 ') fixed to the upper surface 12s (13s) by a corresponding bolt 22 (22'), and a bolt nut 24 (connecting and fixing the support bar 30 to the upper fixing bracket 23 (23 ') 24 ′). 3A and 3B are partial side views of the gantry 1, but the insert 21 (21 ′) and the bolt 22 (22 ′) are also illustrated for explanation.

  The inserts 21 (21 ') and the corresponding bolts 22 (22') that are pre-embedded as anchors are selected to withstand wind loads with sufficient adhesion to the concrete that constitutes the gantry block 10.

  The upper fixture 23 (23 ') is fixed to the upper surface 12s (13s) by the insert 21 (21') and the bolt 22 (22 '). The upper fixing bracket 23 (23 ′) has a shape corresponding to the shape (thickness: about 1 to 2 mm, vertical width: about 50 to 70 mm) of the bottom surface of the upper fixing bracket 23 (23 ′) of the upper surface 12s (13s). You may arrange | position in the provided groove | channel. Further, the upper fixing bracket 23 (23 ') may be disposed on a flat upper surface 12s (13s) having no groove.

  The front portion of the support bar 30 is fixed to the upper fixing bracket 23 on the upper surface 12s of the front wall 12 (FIG. 3A), and the rear portion of the support bar 30 is fixed to the upper fixing bracket 23 'on the upper surface 13s of the rear wall 13. (FIG. 3B).

  The front bolt nut 24 includes a bolt that is disposed in the groove 31 of the support bar 30 and is inserted through the hole of the upper fixing bracket 23 in the horizontal direction, and a nut that tightens the bolt via a washer. The rear bolt nut 24 ′ is arranged in a groove hole 32 provided at a predetermined position of the groove 31 of the support bar 30, and is inserted into the hole of the upper fixing bracket 23 ′ in the horizontal direction. It consists of a nut that is tightened through.

  The solar cell module 2 is placed and fixed on a pair of left and right support bars 30, 30 fixed to the gantry block 10.

  As the support bar 30, a general-purpose product for attaching the solar cell module 2 to the roof can be suitably used, and the general-purpose product can also be used for attaching the solar cell module 2 to the support bar 30. Although detailed description is omitted because it is a general-purpose product, for example, a mounting bracket for attaching the front end surface 2a and the rear end surface 2p of the solar cell module 2 to the upper surface 30s of the support bar 30, and an upper surface 30s of the support bar 30 are bolts and The solar cell module 2 is connected to the pair of left and right support bars 30 by connecting with nuts.

  The upper surface 2 s and the front end surface 2 a of the solar cell module 2 arranged as described above are positioned behind at least a part of the front side surface 12 a of the gantry block 10.

  The single solar cell module 2 supported by the gantry 1 according to the present invention is composed of a plurality of cells, and the single solar cell module generally has outer dimensions W (horizontal width) × L (vertical width) × H. (Thickness) is in the range of about 800 to 1900 mm × about 250 to 1100 mm × about 5 to 50 mm, and the plan view is a square shape, a trapezoidal shape, or the like.

  Referring to FIGS. 2A, 2B, 3A, etc., a gantry according to an embodiment of the present invention includes a gantry block made of precast concrete so as to support a solar cell module having a horizontal width W of 1670 mm and a vertical width L of 1000 mm. A pair of support bars (length: 1100 mm) and mounting brackets, which are general-purpose products for mounting the solar cell module on the roof, and an insert and bolt of a screw nominal M8 for mounting the pair of support bars to the gantry block are used. Manufactured.

The gantry block has a bottom wall outline w × l ₁ × d of about 880 mm × about 740 mm × about 150 mm, a front wall height h ₂ of about 603 mm, a rear wall height h ₃ of about 950 mm, vertical width _{l 3} of the upper surface of the longitudinal width _{l 2} and the rear wall of the upper surface was about 120mm both.

The width _{l 4} of about 180mm of the base portion of the front wall (the boundary between the bottom wall 11), the upper surface of the width _{l 5} of about 380mm of the bottom wall 11, a rear wall and a vertical line and a rear wall of the boundary between the upper surface of the bottom wall The distance l ₆ to the front end of the upper surface of the rear wall was about 152 mm, and the distance ₁₇ from the perpendicular to the rear end of the upper surface of the rear wall was about 92 mm (see FIG. 2A).

  In addition, insert anchors were embedded in a total of four places on the front wall and rear wall of the gantry block at positions where the width wc in the left-right direction from the center line C of the gantry block was 340 mm (see FIG. 2B). .

The volume of the gantry block according to the above example was about 0.2588 m ³ and the weight was about 595 kg. Moreover, the total height which installed the solar cell module in the mount was 1153 mm. The inclination angle of the support bar (light receiving surface of the solar cell module) with respect to the horizontal plane was about 32 degrees.

  The gantry according to the present invention is directly placed on an installation surface (flat ground that has been leveled), but may be placed on a foundation provided on the installation surface or other workpiece. For example, in a construction site, several mounts are directly mounted on the installation surface, and for example, some mounts arranged further rearward are mounted on a rectangular concrete block provided on the installation surface. Thereby, the space | interval or height of each solar cell array may be adjusted.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the above-described embodiments, and various modifications can be made within the technical scope grasped from the description of the claims of the utility model registration. The mode can be changed.

DESCRIPTION OF SYMBOLS 1 Base 2 Solar cell module 2s Photosensitive surface of solar cell module 10 Base block 20, 20 'Fixing tool 30 Support bar

Claims (5)

A stand for supporting the solar cell module,
A gantry block placed on an installation surface, facing a square bottom wall, a front wall extending upward from one end edge of the bottom wall, and the one end edge of the bottom wall A gantry block integrally extending with a rear wall higher than the front wall and extending upward from an edge portion
A pair of support bars fixed to the gantry block using a fixture, and a pair of support bars on which the solar cell module is placed,
The mount block is made of precast concrete,
The bottom area of the bottom wall of the gantry block is in the range of 0.4 m ² to 1.0 m ² , and the ratio of the bottom area of the bottom wall to the surface area of the solar cell module is 1: 1 to 1: 3. In the range of
Supporting a single solar cell module,
Mount. The front wall of the gantry block has a top surface, front and back, left and right side surfaces extending between the top surface and the bottom wall;
The front side of the front wall protrudes forward as it goes downward,
The gantry according to claim 1. The fixture includes an insert anchor that is embedded and installed when the concrete of the gantry block is placed.
The gantry according to claim 1. In the solar cell array in which the solar cell module is supported by the gantry, at least a part of the front side surface of the front wall is located outside a horizontal projection area of the solar cell module.
The gantry according to claim 2. The weight of the gantry block is in the range of 400 kg to 800 kg;
The gantry according to claim 1.

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