JP2017042026A - Shock absorption structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shock absorption structure concerning a solar cell power generation trestle with low material costs and a low construction cost by effectively disposing constituting members having a truss structure to relax stress generated at columns and connection structure sections even when relatively thin and light members are used when an external force such as a strong wind and an earthquake are applied.SOLUTION: A plurality of solar cell panels 1 is installed on a rail 3 through a plurality of L-shaped fittings 2. The rail 3 is installed on a truss structure member 16 formed by integrally fixing pipes 4, 5, support beams 6, 7, 8, 9, 10, 11, support rods 12, 13, and rail installation parts 14, 15 with welding or bolts at each portion. The support rods 12, 13 are connected to columns 19, 24, 28, 31 through support pipes 18, 22, 26, 29.SELECTED DRAWING: Figure 1

Description

The present invention mainly relates to a crosslinked structure of a photovoltaic power generation facility.

Solar power generation has mainly been installed by installing it on the roof and roof of buildings, but roofs and roofs that guarantee sunshine for decades are particularly rare in urban areas due to construction of condominiums, etc. Since the number of houses is small, the electric power industry's expectation for solar power generation does not increase. In addition, there are many problems inherent to placing on the roof, such as strength maintenance for firefighting countermeasures, fire prevention countermeasures, and construction costs that are dangerous and laying costs increase, and various measures to improve output per unit area, Although it has responded by adapting to various roof shapes and providing the power generation function to the roof material itself, it has not achieved a significant drop in installation costs.

On the other hand, in nuclear power generation, the mechanism of extracting energy as heat by gradually fissioning uranium from atomic bombs that explode at a stroke has been promoted with applause only in the early stages of development. The negative impact of the radioactive leakage at the Fukushima nuclear power plant is immeasurable. Furthermore, the generation of a large amount of poisons such as TRU (super uranium element) that will not disappear even in units of tens of thousands of years, and extreme vulnerability to terrorist attacks on power generation, power transmission, substation facilities, etc. have gradually emerged. The significance of existence is questioned.

The cost of nuclear power generation is estimated to be about 6 yen per kwh in the evaluation of the power generation end. Since the receiving end also includes all costs such as transmission, substation, distribution, general and administrative expenses, these expenses. If it is equally distributed by the amount of power generation by type such as hydropower and thermal power, it will be slightly over 15 yen. If nuclear power plants are far from the city and carry large amounts of electricity, the ratio of substation and transmission costs is large, and there is a lot of related work and borrowing. It will be inevitable that the price will be 17 yen or more. Furthermore, if reprocessing costs, disposal costs for high-level nuclear waste, and protection costs from terrorist attacks are added, it can easily exceed 20 yen, and even the selling price for each household may actually increase. Hanahada is expensive. Furthermore, stress corrosion cracking, which significantly impairs the reliability of equipment, is a fatal problem of equipment that uses neutrons, and the more times it is examined for countermeasures, the more the number of thermal fatigues increases and the more likely corrosion cracking occurs. Therefore, even the clue of the solution has not yet been found as a difficult problem. It is obvious that using high-grade materials will further reduce cost competitiveness.

To increase the destructive power of neutrons in the fast breeder reactor, and to maintain the standard as a power generation method for practical use due to the increased concentration of thermal stress, and to obtain plutonium fuel Spent nuclear fuel must be reprocessed and it cannot be a more profitable system.

One major reason why nuclear power generation full of shortcomings continues to be the subject of the energy policy of the 21st century is because it has the greatest weakness that it requires a huge area to perform photovoltaic power generation on a large scale. There is nothing else.

Hydropower, on the other hand, accumulates enormous energy as water evaporated by solar energy from the Pacific Ocean and the Sea of Japan falls into the mountains as rain and snow on the Japanese archipelago. Since the Meiji Era, it has been developed with hydroelectric power, which is Japan's only independent energy, as the most important power source. In recent years, the negative aspects of dams, such as blocking the flow, upstream nutrients and sediments not reaching the sea, dam lakes immediately filled with sediment and lack of investment effect, etc. And the dam is supposed to lose evaluation for its utility, such as waste. However, the negative aspect of disrupting the natural mechanisms such as blocking the river flow and the upstream nutrients and sediments not reaching the sea is the addition of a once-through water channel that maintains the flow from upstream to downstream as a condition for dam construction. However, if we consider that the water resources stored in the dam can be eliminated with a device such as filtered fresh water, and that it has a great ability to respond to sudden fluctuations in power load, it will not move as natural energy in a broad sense. It is a 21st century way of thinking that would make sense to maintain this position.

In recent years, the cost of the solar power cell itself has drastically decreased, but other costs such as construction costs and distribution costs are added, and the cost of the strength and fire prevention measures to prevent destruction due to strong winds and droughts. The load is large, and the competitiveness is still not as high as the unit price of other power generation methods.

On the other hand, in the recent technology of solar system using sunlight, a solar sharing method that balances agriculture and photovoltaic power generation is gradually spreading among farmers with large land. It is a technology that attempts to achieve both solar power generation and crop cultivation by arranging solar panels spaced apart so that sunlight reaches the ground. In order to carry out agriculture, it is necessary to arrange the pillars supporting the solar panels at such a height as to pass through agricultural machines such as tractors and people. However, the place where multiple solar panels are installed is high, and in order to secure a space for farming and tractors to pass through, the spacing between the columns should be as large as possible and the number of columns should be small. Therefore, the strut itself supporting the entire photovoltaic power generation stand is naturally required to have strength, and the connection between the strut and each part of the stand is also important. As for the connection between the column and each member of the gantry, connection by welding, bolt tightening, clamping, or the like can be considered. Among them, welding is difficult to prepare for the operation of the welding equipment when assembling on the farmland, and there is a possibility that the welding material at the time of welding may leave the crops. It is difficult to use the method itself. The clamp method is also an effective means for fastening with relatively weak strength, but it is often not suitable for a structure that maintains strength for a long period of time. I think the method used is safe.

Also, special attention should be paid to the strength of this gantry structure, mainly when the solar panel surface is subjected to strong winds, ensuring the strength against snow load, or having suffered vertical and roll earthquakes. It is important whether the structure can withstand sometimes. Furthermore, what is more important in securing the strength of the columns and mounts is how much the generated stress is dispersed and distributed when external forces such as strong winds, earthquakes, heavy snowfall, etc. are applied. It is important whether a stress relaxation structure can be formed.

Japanese Unexamined Patent Application Publication No. 2014-212177 proposes a general gantry for holding a solar panel. When the size of the solar panel is large, the wind-resistant strength is secured by using a hollow aluminum reinforcing material. Japanese Patent Application Laid-Open No. 2014-025210 discloses a connection using a tension beam by a general method for connecting columns and walls. Furthermore, in Japanese Patent Application Laid-Open No. 2011-091166, as a countermeasure against particularly strong winds, it may be difficult to generate lift generated in the solar panel by providing a structure such as a ventilation slit or an airflow control plate in the gantry. Also, in Japanese Patent Application Laid-Open No. 2015-098725, a pile that supports a solar mount is connected through a beam material in the ground, and the base material is devised to maintain a stable strength against wind pressure and earthquake. A possible structure has been proposed.

JP2014-212177 JP2014-025210A JP2011-091166A JP2015-098725A

Even when solar panels are installed in tall parts and there are relatively few places to stand up the pillars, such as the four corners of each mount, as in the case of sharing photovoltaic power generation and agriculture, It proposes a structure that can withstand earthquakes and heavy snow. Of these, the present invention proposes effective means, particularly focusing on the strength against strong winds.

In the center of the pedestal that supports multiple solar panels, a structural member with a truss structure with a triangular arrangement of beams is placed, and a supporting member that connects between the beam and the beam is placed on this structural member. Concatenate with When external forces such as strong winds or earthquakes are applied, stress is transmitted through the struts from the ground or from the solar panels through the roots of the structural members, so that each member has a uniform force relationship.

According to the present invention, by absorbing and mitigating external forces such as strong winds or earthquakes with structural members having a truss structure, it is generally possible to avoid thick struts, strong members, complicated members and structures. A thin frame can be constructed with a thin and light material, and both the material cost and the construction cost can be reduced.

It is an isometric view showing the present invention. It is an arrow view from the mount back surface of this invention. It is an arrow view from the gantry rear surface of the present invention.

In a photovoltaic power generation stand that supports a plurality of solar panels that share both agriculture and power generation with a small number of columns, the loads due to strong winds received by the solar panels or the shaking of the columns due to an earthquake are directly applied to the columns and each connecting member. Stress was relaxed by a component member having a truss structure connected to the support post and each member at the place added to the structure, and a structure in which concentrated stress was avoided and dispersed was adopted.

In FIG. 1, there are a plurality of units including a solar panel (1) and an L-shaped bracket (2), which are installed on three rails (3). The rail (3) includes pipes (4), (5), support beams (6) (7) (8) (9) (10) (11), support rods (12) (13), and rail installation portions ( 14) and (15) are installed on a truss structure member (16) constituted by being fixed and integrated by welding or bolt fixing, and a support rod for the support beams (6) and (7) of this truss structure member (16) (12) A support pipe (18) in which an intermediate point between the upper and lower ends is connected by a clamp (17) is connected to a support (19) via a clamp (20). Similarly, a support (22) connected by a clamp (21) at an intermediate point between the support beams (7) and (8) on the support rod (13) is connected by a clamp (23) to a column (24 ). Connected to the support column (28) by the clamp (27) through the support pipe (26) connecting the intermediate point between the support beams (9) and (10) on the support rod (13) by the clamp (25). . The intermediate point between the support beams (10) and (11) on the support rod (12) is connected to the column (31) by the clamp (30) via the support pipe (29) connected by the clamp (28). Adopt a structure.

In the case of an earthquake, the meaning of these structures is a support | pillar (19)-> clamp (20)-> support pipe (18)-> clamp (17)-> support bar (12), support | pillar (31)-> clamp (30) → Support pipe (29) → Clamp (28) → Support bar (12), strut (24) → Clamp (23) → Support pipe (22) → Clamp (21) → Support bar (13), strut (28 ) → clamp (27) → support pipe (26) → clamp (25) → external stress is transmitted to the support rod (13), and the support beam (6) stretched around the truss structure member (16) ( 7) The force is dispersed and relaxed by (8), (9), (10), and (11). In the case of strong winds, unlike earthquake stress transmission, when the wind is received by the plurality of panels (1), the rails (3), (32) and (33) are passed through the plurality of L-shaped brackets (2). Posts (19), (30), (28), (24) via clamps (34), (35), (36), (37) connecting the transmitted stress to pipes (4), (5). To the truss structure member (16) from the support pipes (18), (29), (22), (26), or the support rods (12), (13) and the rail installation portion (14). ), (15), a rail that transmits stress to the truss structure member (16) is adopted, and in any case, the supporting beams (6), (7), (8), (9), (10), (10) The part where the stress is dispersed and relaxed in 11) becomes the central part of the stress relaxation.

FIG. 2 shows an arrow view from the back of the gantry of the present invention. The distance between the support column (19) and the support column (31) is wider than the interval between the support column (24) and the support column (28) with respect to the entire gantry, and the support beams (6), ( 7), (8), (9), (10), (11), the support pipes (18), (29), (22), (26) are clamped at the center of the triangle (21), (25). ), (30), and (38). Thereby, it becomes a structure where the stress of each connection member is distributed equally.

FIG. 3 shows an arrow view from the rear surface of the gantry of the present invention. Square pipes (40) and (41) are connected between the strut (24) and the strut (28), and there are electrical boxes (39) necessary for solar power generation equipment such as power conditioners, distribution boards and junction boxes. Multiple units can be installed.

By combining solar power generation and agriculture with solar sharing, or installing solar panels at a high position, the space under the mount can be used effectively such as playgrounds, living places, parking lots, etc. By installing a solar power plant, it is possible to avoid a situation where the role of the land is completely lost. In addition, nuclear power generation is not easy, and farmers can get better by adding electricity sales to their agricultural income.

DESCRIPTION OF SYMBOLS 1 Solar panel 2 L-shaped metal fittings 3, 32, 33 Rail 4, 5 Pipe 6, 7, 8, 9, 10, 11 Support beam 12, 13 Support bar 14, 15 Rail installation part 16 Truss structure members 17, 20, 21, 23, 25, 27, 30, 38 Clamps 18, 29, 26, 22 Support pipes 15, 16, 17, 19, 20, 21, 22 Connecting members 24, 31, 19, 28 Struts 34, 35, 36, 37 Clamp 39 Electrical box 40, 41 Square pipe

Claims (3)

In a structure in which a plurality of solar panels (1) are arranged, support beams (6) (7), (8), (9), (10), (11) and support rods (12), (13) and rails The intermediate point between the support beams (6) and (7) on the support rod (12) is clamped via a truss structure member (16) composed of installation portions (14) and (15) ( The support pipe (18) connected in 17) is connected to the support column (19) through the clamp (20), and an intermediate point between the support beams (7) and (8) on the support rod (13) is formed. The support beam (22) connected by the clamp (21) is connected to the support column (24) by the clamp (23), and the intermediate between the support beams (9) and (10) on the support rod (13). The point is connected to the support column (28) by the clamp (27) through the support pipe (26) connected by the clamp (25). The intermediate point between the beams (10) and (11) on the support rod (12) is connected to the column (31) by the clamp (30) through the support pipe (29) connected by the clamp (28). Thus, when an external force such as an earthquake or strong wind is applied, the shock absorbing structure is characterized in that the strength of the entire gantry is secured by relaxing the stress around the truss structure member (16). The distance between the struts (19) and the struts (31) according to claim 1 is wider than the distance between the struts (24) and the struts (28), and the support beams (6), (7) of the truss component member (16). ), (8), (9), (10) and (11), clamp the support pipes (18), (29), (22) and (26) in the center of the triangle (21) and (25). The shock absorbing structure according to claim 1, wherein the structure is fixed at (30), (38). Pipes (40) and (41) are connected between the support post (24) and the support post (28) of claim 1 and there are electrical relations necessary for photovoltaic power generation equipment such as a power conditioner, a distribution board and a connection box. The shock absorbing structure according to claim 1, wherein a plurality of boxes (39) can be installed.

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