JP5563362B2 - Photovoltaic module support structure and support height adjustment method thereof - Google Patents

Description

  The present invention relates to a photovoltaic module support structure that supports a photovoltaic module called a solar panel and the like, and is particularly suitable for supporting a large number of photovoltaic modules having a large area side by side in the vertical and horizontal directions.

In order to reduce the amount of CO ₂ emissions that have a serious impact on global warming, solar power generation that does not emit CO ₂ has been actively developed. Although a solar panel or the like used for solar power generation is also referred to as a photovoltaic module, it is difficult to store electric power. Therefore, by generating a large number of photovoltaic modules having a large area, power generation efficiency is improved. As a photovoltaic module support structure for supporting such a photovoltaic module having a large area, there is one described in Patent Document 1 below, for example. This photovoltaic module support structure includes a swinging column that supports the photovoltaic module in a swingable manner, and a slide column whose length can be changed according to the oscillation of the photovoltaic module. The module is supported securely and the inclination angle of the photovoltaic module can be adjusted with a small number of people.

JP 2005-64147 A

Recently, there is a demand for arranging such a photovoltaic module in a place such as a garbage dump. The garbage dump cannot predict the difference in the shrinkage rate of the soil due to chemical changes in organic matter. That is, for example, when a photovoltaic module is supported by a support on a foundation, it cannot be predicted how much the support will sink. In order to support a photovoltaic module having a large area, at least several support columns are required. Therefore, if an uneven subsidence, that is, a so-called uneven settlement occurs between the support columns, the photovoltaic module is distorted. Since most of the photovoltaic modules are brittle materials such as glass, there arises a problem that the photovoltaic modules are damaged when distortion exceeding an allowable range occurs. Such problems can occur on any land where unequal subsidence can occur.
The present invention has been made paying attention to the above-described problems, and provides a photovoltaic module support structure capable of suppressing and preventing damage to photovoltaic modules even on land where unequal settlement may occur. It is intended to provide.

  In order to solve the above-described problems, the photovoltaic module support structure of the present invention is a photovoltaic module support structure that supports a large number of photovoltaic modules arranged side by side in the vertical direction and the horizontal direction, and is positioned at four corners of a square in plan view. 4 supporting columns, two receiving beams supported in a protruding manner for each of the two supporting columns arranged side by side, and supported in a protruding manner on the two receiving beams. A plurality of joists for mounting and supporting the photovoltaic module, a swing support mechanism interposed between the joists and the photovoltaic module and supporting the photovoltaic module so as to be swingable, the support column and the receiving beam. And a support height adjusting mechanism that can adjust the height of the receiving beam in response to uneven settlement of the support column.

Moreover, the horizontal distance between the columns is 6 m or more.
Further, the ratio of the length of one side projecting from the column of the receiving beam to the entire length of the receiving beam and the ratio of the length of one side projecting from the beam of the joist to the total length of the joist are 0.20 or more and 0.22. It is characterized by the following.
In addition, the support height adjusting mechanism includes an inclination angle adjusting mechanism that adjusts an inclination angle of the photovoltaic module with respect to a horizontal plane.

Further, the support height adjusting mechanism includes a support member moving mechanism for moving the connecting point of the receiving beam in the vertical direction, and the tilt angle adjusting mechanism includes a rotation connecting mechanism for rotating the connecting point of the receiving beam. It is characterized by this.
The support member moving mechanism includes a restricting mechanism for restricting the movement of the support member.

  Thus, according to the photovoltaic module support structure of the present invention, when supporting a large number of photovoltaic modules having a large area arranged side by side in the vertical direction and the horizontal direction, every two of the four columns arranged side by side are supported. Two receiving beams are supported in a projecting manner, a plurality of joists are supported in a projecting manner on the two receiving beams, and photovoltaic modules are mounted and supported on the joists, and the joists and photovoltaic modules are supported. A swing support mechanism that supports the photovoltaic module in a swingable manner is installed in between, and the height of the support beam can be adjusted between the support column and the support beam in response to uneven settlement of the support column. By interposing the support height adjustment mechanism, it is possible to reduce the distortion of the photovoltaic module due to unequal settlement of the struts, and to adjust the height of the receiving beam even if unequal settlement occurs Since the distortion of the photovoltaic module can be reduced, the photovoltaic module Corruption Lumpur can be prevented suppressed.

In addition, by setting the horizontal distance between the columns to 6 m or more, it is possible to reduce the distortion of the photovoltaic module due to the uneven settlement of the columns.
Further, the ratio of the length of one side protruding from the support column of the receiving beam to the total length of the receiving beam and the ratio of the length of one side protruding from the joist of the joist to the total length of the joist are 0.20 or more and 0.22 or less. As a result, it is possible to reduce the strength of the receiving beams and joists, so that their weight can be reduced and the settlement of the land itself can be reduced.

In addition, the support height adjustment mechanism includes an inclination angle adjustment mechanism that adjusts the inclination angle of the photovoltaic module with respect to the horizontal plane, thereby adjusting the amount of solar radiation to the photovoltaic module and adjusting the amount of power generated by the photovoltaic module. It becomes possible.
In addition, the support height adjustment mechanism was equipped with a strut member movement mechanism for moving the connection point of the receiving beam in the vertical direction, and the tilt angle adjustment mechanism was equipped with a rotation connection mechanism for rotating the connection point of the reception beam Thus, it is possible to adjust the inclination angle of the photovoltaic module simply by moving the connecting point between the support column and the receiving beam in the vertical direction.
Further, since the support member moving mechanism includes a control mechanism that controls the movement of the support member, the height of the connection point of the receiving beam can be easily maintained in a predetermined state.

BRIEF DESCRIPTION OF THE DRAWINGS It is a whole block diagram which shows 1st Example of the photovoltaic module support structure of this invention, (a) is a top view, (b) is a front view. It is a schematic diagram of the photovoltaic module support structure of FIG. It is explanatory drawing of a section modulus and a section secondary moment in the projecting beam structure of FIG. It is explanatory drawing of the foundation of a photovoltaic module support structure, and a gantry cost. It is explanatory drawing of distortion calculation of the photovoltaic module when uneven settlement occurs. It is explanatory drawing of a foundation (support | pillar) span and allowable relative settlement. It is explanatory drawing which shows the detail of the photovoltaic module support structure of FIG. 1, (a) is a left view, (b) is a front view. It is explanatory drawing of the connection part of a photovoltaic module and joist. It is explanatory drawing of the subsidence amount monitor in a support | pillar part, (a) is a general view, (b) is a single-piece | unit figure of a monitor, (c) is explanatory drawing of the state which monitors the subsidence amount. It is a front view which shows 2nd Example of a photovoltaic module support structure. It is a front view which shows 3rd Example of a photovoltaic module support structure. It is explanatory drawing which shows an example of the support | pillar member control mechanism of FIG. 11, (a) is a front view of a support | pillar member, (b) is AA sectional drawing of FIG. 11, (c) is BB cross section of FIG. FIG. It is a front view which shows the other example of the support | pillar member control mechanism of FIG. It is explanatory drawing of the brake member used for the support | pillar member control mechanism of FIG. (A) is CC sectional drawing of FIG. 13, (b) is DD sectional drawing of FIG. It is a front view which shows the further another example of the support | pillar member control mechanism of FIG. It is explanatory drawing of an effect | action of the support | pillar member control mechanism of FIG. It is a front view which shows 4th Example of a photovoltaic module support structure. It is explanatory drawing of the tensioner of FIG. It is a front view which shows 5th Example of a photovoltaic module support structure. It is EE sectional drawing of FIG. It is a front view which shows 6th Example of a photovoltaic module support structure.

  Next, an embodiment of the photovoltaic module support structure of the present invention will be described with reference to the drawings. FIG. 1 is an overall view of the photovoltaic module support structure of the present embodiment, and FIG. 2 is a schematic diagram of the photovoltaic module support structure of FIG. The photovoltaic module support structure according to the present embodiment is provided for each of the four columns 1 located at the four corners of the square in a plan view and the two columns 1 arranged side by side among the four columns 1. Two receiving beams 2 supported in a projecting manner and a plurality of joists 3 supported in a projecting manner on the two receiving beams 2. A photovoltaic module 4 is mounted on the joists 3. Mount. The column 1, the support beam 2, and the joist 3 are also referred to as a gantry. By adopting such a gantry structure, as will be described later, a large number of photovoltaic modules 4 can be mounted on a lighter gantry. It becomes. Of course, the foundation 5 is constructed on the ground below each column. In the present invention, the longitudinal direction of the receiving beam 2 is defined as the horizontal direction, and the longitudinal direction of the joists 3 is defined as the vertical direction.

  Further, in the present embodiment, a swing support mechanism 6 that supports the photovoltaic module 4 so as to be swingable is interposed between the joist 3 and the photovoltaic module 4, so that the support column 1, the receiving beam 2, In the meantime, a support height adjusting mechanism 7 that can adjust the height of the receiving beam 2 corresponding to the uneven settlement of the support column 1 (foundation 5) is interposed. These are all configured to follow uneven settlement. Conventionally, the uneven settlement of soil has been dealt with by increasing the rigidity so that neither the foundation nor the platform will sink. However, it is impossible to predict how much unequal settlement will occur due to chemical changes in organic matter at the garbage collection sites described above. Therefore, in the present embodiment, it is assumed that the swing support mechanism 6 and the support height adjustment mechanism 7 follow the uneven settlement, and as a condition for that purpose, the gantry structure and the later-described enlargement are important.

  FIG. 3 shows the required (necessary) section modulus and the required (necessary) cross-section secondary in the protruding support structure between the support column 1 and the receiving beam 2 or the protruding support structure between the receiving beam 2 and the joist 3. This is the moment. In the figure, symbol S is the total length of the support beam 2 or joist 3, and symbol X is the length of one side of the support beam 2 protruding from the column 1 or the length of the joist 3 from the support beam 2, and the horizontal axis is X / S is a variable. That is, as X / S approaches 0, the fulcrum shown on the left side of the figure is set to the outside of the beam, and as it approaches 0.5, it is set to the center. Further, symbol IT represents a desired sectional secondary moment of the whole beam, symbol Ic represents a desired sectional secondary moment of the central portion of the beam, symbol Zs represents a desired sectional modulus of the fulcrum portion, and symbol Zc represents a desired sectional modulus of the central portion of the beam.

  The sectional moment represents the difficulty of deformation (rigidity) with respect to the bending moment, and the section modulus represents the bending resistance strength. The smaller the required sectional secondary moment and the required section modulus, the smaller the sectional area. As a result, the weight of the beam can be reduced. As described above, since the photovoltaic module support structure of this embodiment is intended for sinking soil, reducing the weight of the gantry structure is a very important factor. Further, as apparent from the figure, the optimum stiffness point of X / S is 0.22 and the optimum strength point is 0.21, and therefore in this embodiment, the support post of the receiving beam 2 with respect to the entire length of the receiving beam 2 The ratio of the length of one side projecting from 1 and the ratio of the length of one side projecting from the receiving beam 2 of the joist 3 to the total length of the joist 3 were set to 0.20 or more and 0.22 or less.

  FIG. 4 shows the flow length of the photovoltaic module support structure, the length of the joist 3 in this embodiment, the cost of the foundation with respect to the inclination angle of the photovoltaic module 4, and the cost of the gantry. As is clear from the figure, if the flow length of the photovoltaic module support structure, that is, the length of the joist 3 is 10000 mm or more, that is, 10 m or more, the basic cost when the inclination angle is 5 ° can be reduced. it can. Further, not only in terms of cost, but also as described later, in order to reduce the distortion of the photovoltaic module 4, it is desirable to increase the size of the entire photovoltaic module support structure in plan view.

  FIG. 5 shows a photovoltaic module on joists when four foundations, that is, four struts on the foundation, sunk only on one foundation, that is, one strut, resulting in uneven settlement. It is explanatory drawing which calculates the distortion which arises. For example, in FIG. 5a, the X-axis is taken to the right, the Y-axis is taken upward, the lower left column position (0, 0) is the origin, the lower right column position is (0, S1), and the upper left column position. (S2, 0), the right upper column position is (S2, S1), and only the upper right column is sunk unevenly, the coordinates (x1, y1), (x2) of the four corners of the photovoltaic module in FIG. , Y2), (x3, y3), and (x4, y4), an out-of-plane strain amount d is obtained, and an allowable relative settlement amount δ of the column, that is, the foundation when the out-of-plane strain amount d is within the allowable range. Ask. The out-of-plane strain amount is an amount by which a planar member such as glass that occupies most of the photovoltaic module is distorted in a direction away from the plane.

  FIG. 6 shows the calculation result of the allowable relative settlement amount δ of the foundation. The base span in the figure indicates, for example, the distance between the foundation of the lower left support column and the lower right support column in FIG. 5a, and the aspect ratio of the foundation span refers to, for example, the base of the lower left support column and the upper left support column in FIG. The ratio of the distance between the foundation of the lower left column and the foundation of the lower right column relative to the distance between the foundations is shown. As can be seen from the figure, the larger the gap between the foundations, the larger the allowable relative settlement of the foundation. The gap between the foundations is set to 6000 mm, that is, 6 m. The settlement amount δ is 300 mm. Therefore, in the present embodiment, the distance between the columns 1 in a plan view, that is, in the horizontal direction is set to 6 m or more. Further, as described above, in the present embodiment, the ratio of the length of one side of the support beam 2 that protrudes from the support column 1 to the total length of the support beam 2 and the jump of the joist 3 from the support beam 2 with respect to the total length of the joist 3. Since the ratio of the length of the protruding piece side is 0.20 or more and 0.22 or less, the total length of the receiving beam 2 and the total length of the joists 3 are 10 m or more, and a large photovoltaic module supporting structure is obtained.

  In FIG. 7, the detail of 1st Example of the structure from the foundation 5 to the photovoltaic module 4 is shown. This photovoltaic module support structure includes a support height adjusting mechanism 7 corresponding to unequal subsidence, for example, by elongating the support column 1 with the foundation 5 subsided to make the receiving beam 2 higher. In this embodiment, no mechanism for adjusting the inclination angle of the photovoltaic module 4 is provided. In the present embodiment, four anchor bolts 8 are buried in the support 1 installation site of the foundation 5, and the threaded portion 8a is long and protrudes upward. The screw part 8a of the anchor bolt 8 is covered with a cover 14 for rust prevention. The nut 9 is screwed into the threaded portion 8a of the anchor bolt 8, and then the threaded portions 8a of the four anchor bolts 8 are inserted into through holes (not shown) of the substrate 11 of the column member 10, and from above the substrate 11, Further, the nut 9 is screwed into the threaded portion 8 a of the anchor bolt 8. Incidentally, the nut 9 above the substrate 11 is a so-called double nut that overlaps in a double manner and does not loosen.

  A bifurcated support member 10 having an open top is fixed on the substrate 11 by welding or the like, and an upper plate 12 is fixed to the upper end portion thereof by welding or the like. A swing mechanism 13 is attached to the upper plate 12 using a fastener such as a bolt or nut, and the swing mechanism 13 is attached to the receiving beam 2 using a fastener such as a bolt or nut. The swinging mechanism 13 is arranged around the bolt 13a by arranging connecting members having a T-shaped cross section so that the ribs (vertical portions) overlap each other and connecting these ribs with a single bolt 13a. Can be swung. A plurality of joists 3 are fixed to the upper portion of the receiving beam 2 using a fixing tool such as a bolt and a nut, and the photovoltaic module 4 is attached to the upper portions of the joists 3 via a swing support mechanism described later. It has been.

  In this photovoltaic module support structure, when uneven settlement occurs, the cover 14 of the anchor bolt 8 is removed, the nut 9 above the substrate 11 of the column member 10 is loosened and moved upward, and if necessary, the bifurcated The upper plate 12 is jacked up between the support members 10, and the nut 9 below the substrate 11 of the support member 10 is rotated and moved upward. When the nut 9 below the substrate 11 of the support member 10 is moved upward by a necessary height, that is, the sinking amount, the substrate 11 of the support member 10 is mounted above the nut 9 and the nut 9 above the substrate 11 is attached. Screw and tighten to fix. As a result, the support column 1 becomes substantially longer by the amount of settlement, the height of the receiving beam 2 is increased, the uneven settlement is absorbed, and the distortion of the photovoltaic module 4 is eliminated.

  In FIG. 8, the detail of the rocking | fluctuation support mechanism 6 interposed between the joist 3 and the photovoltaic module 4 is shown. The photovoltaic module 4 includes, for example, a panel portion 41 that actually performs photovoltaic power generation and a frame body 42 that supports the periphery thereof, and a leg portion 43 having a U-shaped cross section extends below the frame body 42. In this embodiment, the attachment member 19 is created by bending a single sheet metal. The mounting member 19 includes an upper plate portion 15 that contacts the lower plate member of the leg portion 43, a vertical plate portion 16 that is connected to the upper plate 15, and a lower plate portion 17 that is connected to the vertical plate portion 16. It is formed in a U-shaped cross section, and is connected to the lower plate 17 to form a vertically downward mounting portion 18. The mounting portion 18 is attached to the joist 3 with a fixture such as a bolt and a nut, and the upper plate portion 15 is It attaches to the board | plate material of the leg part 43 of the photovoltaic module 4 with fixing tools, such as a volt | bolt and a nut. The U-shaped section of the sheet metal formed by the upper plate 15, the vertical plate portion 16, and the lower plate portion 17 is elastically deformed to absorb the swing of the photovoltaic module 4. Therefore, even if the photovoltaic module 4 is locally displaced due to unequal settlement of the support column 1, the displacement is absorbed by the U-shaped section of the mounting member 19 and the photovoltaic module 4 is damaged due to stress concentration. Can be suppressed and prevented.

  FIG. 9 shows a sinking amount monitor 20 in the column portion. As shown in FIG. 9 b, the sinking amount monitor 20 is configured by a transparent resin cup, and a connecting pipe 22 projects from the lower part. The inside of the resin cup is connected to the outside at the tip of the connecting pipe 22. Communicate. The sinking amount monitors 20 are attached to the upper ends of the four columns 1 at the same height, and the tubes 21 are inserted into the connecting pipes 22 to connect the four sinking amount monitors 20 (unused connecting pipes 22 Is plugged with a plug). In this state, a liquid such as water is supplied to all the settlement amount monitors 20. Since the sinking amount monitor 20 has the same height, the liquid level of the internal liquid is also the same. However, when uneven settlement occurs in the support column 1, the height of the settlement amount monitor 20 changes as shown in FIG. 9c, and the liquid level of the internal liquid changes. The higher the liquid level of the liquid in the subsidence amount monitor 20, the lower the liquid level, and the lower the liquid level, the lower the liquid level. Therefore, when the height of the receiving beam 2 is adjusted by the support height adjusting mechanism 7, the other support heights are set in accordance with the column 1 having the lowest liquid level inside the sinking amount monitor 20. The height of the receiving beam 2 may be adjusted by the adjusting mechanism 7.

  FIG. 10 shows a second embodiment of the support height adjusting mechanism 7. The support height adjusting mechanism 7 includes an inclination angle adjusting mechanism 23 for adjusting the inclination angle of the photovoltaic module 4. In this embodiment, a box-shaped base 24 is erected on the foundation 5, and a screw rod 26, which is a support member, is inserted into the through hole formed in the upper plate 25 from above. An upper spherical member 28 having a screw hole that is screwed into the screw rod 26 is screwed into the screw rod 26. The upper spherical member 28 has a shape in which the height of the bowl is hollowed out and has a two-sided width (or may be a hexagonal shape) on the outer periphery, and is screwed onto the screw bowl 26 with the bowl spherical portion facing downward. Are combined. Then, the screw rod 26 is inserted into the through hole of the lower spherical member 27 so as to cover the lower spherical member 27 from the lower end portion of the screw rod 26 inserted into the through hole of the upper plate 25. The lower spherical member 27 has a shape that makes the bowl height longer, and is fitted on the screw rod 26 with the bowl spherical portion facing upward, and the raised portion fits into the hollow portion of the upper spherical member 28. . When the raised portion of the lower spherical member 27 is inserted into the hollowed portion of the upper spherical member 28, a bolt 29 is screwed and tightened from the outer peripheral surface of the upper spherical member 28 to fix the lower spherical member 27 to the upper spherical member 28. The screw rod 26 itself is held by a holding mechanism (not shown).

  On the other hand, an eye nut 30 is screwed to the upper end portion of the screw rod 26, and a nut 31 is screwed below the eye nut 30, and both are fixed by a so-called double nut. A pin 32 whose axis is orthogonal to the inclination direction of the photovoltaic module 4 is inserted into the ring portion of the eyenut 30, and the pin 32 is passed through a rib 33 protruding from the receiving beam 2. Therefore, since the receiving beam 2 and the screw rod 26 can rotate in the inclination direction of the photovoltaic module 3 with the pin 32 as an axis, the inclination angle adjusting mechanism 23 of this embodiment rotates to rotate the connection point of the receiving beam 2. A coupling mechanism is provided.

  In this embodiment, the periphery of the through hole of the base 25 is pressed from above by the spherical portion of the upper spherical member 28 and pressed from below by the spherical portion of the lower spherical member 27. Since the outer surface of the upper spherical member 28 has a two-sided width (or hexagon), if the upper spherical member 28 is rotated by applying a tool such as a wrench to the two-sided width, The screw hole moves in the axial direction of the screw rod 26 along the screw of the screw rod 26. Actually, since neither the upper spherical member 28 nor the lower spherical member 27 can move in the vertical direction, the screw rod 26 is moved in the vertical direction with respect to the base 24. Therefore, if unequal settlement occurs, the upper spherical member 28 of the sunk column 1 is rotated to raise the screw rod 26, and the connecting point of the receiving beam 3 moves upward. The distortion of the photovoltaic module 4 can be eliminated.

  Further, when the screw rod 26 that is the column member is moved in the vertical direction, the screw rod 26 may be rotated in the paper surface direction of FIG. 10, for example, due to a difference in length from the other column 1. However, in this embodiment, the spherical surface portion of the upper spherical member 28 and the spherical surface portion of the lower spherical member 27 are in contact with each other so that the periphery of the through hole of the upper plate 25 of the base 24 is pressed, and the receiving beam 2 and screw Since the flange 26 is capable of relative rotation around the pin 32, the screw rod 26 can be allowed to rotate. In addition, by moving the screw rod 26, which is the column member, in the vertical direction, the other column 1 is raised or lowered with respect to any one column 1 side by side, whereby the photovoltaic module 4 is inclined. It is also possible to change the angle. When the inclination angle of the photovoltaic module 4 is changed, the amount of received sunlight and the amount of power generated can be changed. Therefore, the screw module 26 is moved in the vertical direction in accordance with the desired amount of sunlight and the amount of power generation. What is necessary is just to change the inclination angle. Therefore, the support height adjusting mechanism 7 of this embodiment includes a support member moving mechanism for moving the connecting point of the receiving beam 2 in the vertical direction.

  FIG. 11 shows a third embodiment of the support height adjusting mechanism 7. 12 is an explanatory view showing an example of the strut member regulating mechanism of FIG. 11. FIG. 12a is a front view of the strut member, FIG. 12b is a cross-sectional view taken along line AA of FIG. 11, and FIG. It is -B sectional drawing. The support height adjusting mechanism 7 includes an inclination angle adjusting mechanism 23 for adjusting the inclination angle of the photovoltaic module 4. Since the configuration of the tilt angle adjusting mechanism 23 is the same as that of the second embodiment of FIG. 10, the same components are denoted by the same reference numerals and detailed description thereof is omitted. In the present embodiment, instead of the screw rod of the second embodiment, a pillar member 34 made of a large-diameter round bar is used, and a male screw 34a is formed at the upper end of the pillar member 34, and the male screw 34a An inclination angle adjusting mechanism 23 is attached. In the following embodiments, the column member 34 itself is held by a holding mechanism (not shown).

  Two ribs 35 parallel to the inclination angle direction of the photovoltaic module 4 are erected on the upper plate of the base 24, and a support member 36 made of a square pipe is inserted between the ribs 35. From the outside, the bolt 37 is screwed into the screw hole of the support member 36 and tightened, whereby the support member 36 is rotatably supported around the bolt 37. Then, the support member 34 is inserted inside the support member 36. On the outer periphery of the support member 34, recesses 38 having a circular cross section are formed at equal intervals. A bolt 39 is screwed from the outside of the support member 36, and a tip round bar portion of the bolt 39 is inserted into the recess 38. The movement of the support member 34 is restricted. That is, the support member moving mechanism of this embodiment includes a restriction mechanism that restricts the movement of the support member 36. As shown in FIG. 12a, by providing a corner R at the back end of the recess 38, the column member 34 is moved in the longitudinal direction, that is, the vertical direction when the round end of the bolt 39 hits. When the force to act acts, for example, when the column member 34 and the support member 36 are bitten, it is possible to eliminate it by turning the bolt 39.

  One end of a rope 40 is attached to the lower end of the column member 36, and the rope 40 is wound around a manual winch 42 via a pulley 41. When the rope 40 wound around the manual winch 42 is discharged, the support member 34 is lowered. When the rope 40 is wound up by the manual winch 42, the support member 34 is raised. Therefore, when uneven settlement occurs, the connecting point of the receiving beam 3 moves upward by winding the rope 40 with the manual winch 42 of the settled support column 1 and raising the support member 34. The distortion of the photovoltaic module 4 can be eliminated by absorption. Moreover, the inclination angle of the photovoltaic module 4 is changed by raising or lowering the other support column 1 with respect to any one of the support columns 1 arranged side by side in the vertical direction of the support member 34. Therefore, it is only necessary to change the inclination angle of the photovoltaic module 4 by moving the support member 34 in the vertical direction according to the desired amount of sunlight and the amount of power generated. The rope 40 is desirably a lightweight material such as carbon fiber, and more preferably a strip shape.

  13 is a front view showing another example of the support member regulating mechanism of FIG. 11, FIG. 14 is an explanatory view of a brake member used in the support member regulating mechanism of FIG. 13, and FIG. 13 is a cross-sectional view taken along the line CC of FIG. 13, and FIG. 15b is a cross-sectional view taken along the line DD of FIG. In this embodiment, as shown in FIGS. 11 and 12, the bolt 39 is inserted into the recess 39 of the support member 34 to restrict the movement of the support member 34, whereas the individual brake member 40 is connected to the support member by the bolt 39. It is pressed against the outer peripheral surface of 34, and the movement of the column member 34 is regulated by the frictional force. In the present embodiment, the support member 36 is changed from a square pipe to a round pipe, or the tip portion 47 of the bolt 39 is not a round bar. Reference numerals are assigned and detailed description thereof is omitted. The brake member 40 is an arc-shaped plate member that comes into close contact with the outer peripheral surface of the column member 34, which is a round bar, and a locking portion 40a for preventing fall is provided vertically at the upper end portion. The brake member 40 is inserted into the gap between the support member 34 and the support member 36 so that the locking portion 40a is on the upper side, and the brake member 40 is pressed against the outer peripheral surface of the support member 34 with a bolt 39, The movement of the member 34 in the vertical direction is restricted. It should be noted that the brake member 40 may be pressed against the outer peripheral surface of the column member 34 even with the bolt 37 screwed from the outside of the rib 35.

  16 is a front view showing still another example of the column member regulating mechanism of FIG. 11, and FIG. 17 is an explanatory diagram of the operation of the column member regulating mechanism of FIG. In this embodiment, two band members 43 are directly attached to the outer peripheral surface of the support member 34 with a fixture such as a bolt and a nut, and a connecting portion 43a of these band members 43 is connected to the support member 36 in a protruding manner. The support member 36 is fixed to the support member 36 by fixing them with a fixture such as a bolt or nut, and the vertical movement of the support member 34 is restricted.

  FIG. 18 is a front view showing a fourth embodiment of the photovoltaic module support structure, and FIG. 19 is an explanatory view of the tensioner of FIG. The support height adjusting mechanism 7 includes an inclination angle adjusting mechanism 23 for adjusting the inclination angle of the photovoltaic module 4. Since the configuration of the tilt angle adjusting mechanism 23 is the same as that of the second embodiment of FIG. 10, the same components are denoted by the same reference numerals and detailed description thereof is omitted. Further, the structure of the support member 34 and the tilt angle adjusting mechanism 23 and the structure of the support member regulating mechanism are the same as those of the third embodiment of FIG. Detailed description is omitted.

  In the present embodiment, the rope 40 is connected to the upper end portion and the lower end portion of the support member 34, and the rope 40 is hung on the pulley 41 on the support base 44 of the base 24. The pulley 41 is connected to a manual handle 46 via a tensioner 45. When the manual handle 46 is rotated, the rope 40 moves, and the support member 34 is moved in the vertical direction accordingly. Therefore, if unequal subsidence occurs, the connecting point of the receiving beam 3 moves upward by moving the rope 40 with the manual handle 46 of the subsidence post 1 and raising the post member 34. The distortion of the photovoltaic module 4 can be eliminated by absorption. Moreover, the inclination angle of the photovoltaic module 4 is changed by raising or lowering the other support column 1 with respect to any one of the support columns 1 arranged side by side in the vertical direction of the support member 34. Therefore, it is only necessary to change the inclination angle of the photovoltaic module 4 by moving the support member 34 in the vertical direction according to the desired amount of sunlight and the amount of power generated.

  The tensioner 45 has a U-shaped movable bracket 47 that supports the pulley 41 and a U-shaped fixed bracket 48 whose opening side is in the same direction as the movable bracket 47. The fixed bracket 48 is fixed to the support base 44. Has been. A nut 49 is welded and fixed to the web of the movable bracket 47, and a through hole is formed in the web of the fixed bracket 48. Then, the bolt 50 is inserted into the through hole from the outside of the web of the fixed bracket 48, and the bolt 50 is screwed into the nut 49 of the movable bracket 47. If the bolt 50 is rotated so as to be fastened to the nut 49, the movable bracket 47 is moved to the fixed bracket 48 side, so that the tension of the rope 40 can be increased. On the contrary, if the bolt 50 is rotated so as to be extracted from the nut 49, the movable bracket 47 is separated from the fixed bracket 48, so that the tension of the rope 40 can be lowered.

  FIG. 20 is a front view showing a fifth embodiment of the photovoltaic module support structure, and FIG. 21 is a sectional view taken along line EE of FIG. The support height adjusting mechanism 7 includes an inclination angle adjusting mechanism 23 for adjusting the inclination angle of the photovoltaic module 4. Since the configuration of the tilt angle adjusting mechanism 23 is the same as that of the second embodiment of FIG. 10, the same components are denoted by the same reference numerals and detailed description thereof is omitted. In this embodiment, the column member 34 is a prism, a male screw 34a is formed at the upper end, and the tilt angle adjusting mechanism 23 is attached to the male screw 34a. The support member 52 that supports the prism column member 34 has a U-shaped cross section, and the column member 34 is brought into contact with the web. Since the support structure of the support member 52 to the rib 35 is equivalent to that of the third embodiment of FIG. 11, the same reference numerals are given to the same components, and the detailed description thereof is omitted.

  A chain 51 is attached to the support member 34 along the longitudinal direction, that is, in the vertical direction. A sprocket 53 meshing with the chain 51 is rotatably attached to the support member 52, and a handle is attached to the sprocket 53. 46 is connected. Further, through holes are formed in the two ribs of the support member 52 having a U-shaped cross section, and when bolts 54 are inserted into the through holes and nuts 55 are screwed into the bolts 54, The shaft portion is positioned between the teeth of the sprocket 53. Therefore, if uneven settlement occurs, the sprocket 53 is rotated by the manual handle 46 of the pillar 1 that has been lowered, and the chain 51 is moved along with the rotation of the sprocket 53 to raise the pillar member 34. Since the connection point moves upward, the uneven settling can be absorbed and the distortion of the photovoltaic module 4 can be eliminated. Moreover, the inclination angle of the photovoltaic module 4 is changed by raising or lowering the other support column 1 with respect to any one of the support columns 1 arranged side by side in the vertical direction of the support member 34. Therefore, it is only necessary to change the inclination angle of the photovoltaic module 4 by moving the support member 34 in the vertical direction according to the desired amount of sunlight and the amount of power generated. When the column member 34 is moved to a predetermined position, the bolt 54 is inserted into the through hole of the support member 52 having a U-shaped cross section, and the nut 55 is screwed into the bolt 54. Positioned between the teeth, the rotation of the sprocket 53 is restricted, and as a result, the movement of the chain 51, that is, the movement of the column member 34 in the vertical direction is restricted.

  FIG. 22 is a front view showing a sixth embodiment of the photovoltaic module support structure. The support height adjusting mechanism 7 includes an inclination angle adjusting mechanism 23 for adjusting the inclination angle of the photovoltaic module 4. Since the configuration of the tilt angle adjusting mechanism 23 is the same as that of the second embodiment of FIG. 10, the same components are denoted by the same reference numerals and detailed description thereof is omitted. Further, the column member 34, the support member 52, and the mounting structure thereof in this embodiment are the same as those in the fifth embodiment of FIG. Is omitted.

  In this embodiment, instead of the chain of the fifth embodiment, a rack 56 is attached along the longitudinal direction of the column member 34, that is, in the vertical direction, and a pinion 57 that meshes with the rack 56 is a support member 52. A handle 46 is connected to the pinion 57. Similarly to the fifth embodiment, a bolt 54 can be inserted into the through-holes of the two ribs of the support member 52. When a nut 55 is screwed into the bolt 54, the shaft portion of the bolt 54 is racked. It is located between 57 teeth. Therefore, if unequal settlement occurs, the pinion 57 is rotated by the manual handle 46 of the post 1 that has been sunk, and the rack 56 is moved along with the rotation of the pinion 57 to raise the support member 34. Since the connection point moves upward, the uneven settling can be absorbed and the distortion of the photovoltaic module 4 can be eliminated. Moreover, the inclination angle of the photovoltaic module 4 is changed by raising or lowering the other support column 1 with respect to any one of the support columns 1 arranged side by side in the vertical direction of the support member 34. Therefore, it is only necessary to change the inclination angle of the photovoltaic module 4 by moving the support member 34 in the vertical direction according to the desired amount of sunlight and the amount of power generated. When the column member 34 is moved to a predetermined position, the bolt 54 is inserted into the through hole of the support member 52 having a U-shaped cross section, and the nut 55 is screwed into the bolt 54. Positioned between the teeth, the rotation of the rack 57 is restricted, and as a result, the movement of the rack 56, that is, the movement of the column member 34 in the vertical direction is restricted.

  As described above, in the photovoltaic module support structure of the present embodiment, when supporting a large number of photovoltaic modules 4 arranged in the vertical direction and in the horizontal direction, each of the two columns 1 arranged side by side out of the four columns 1 is supported. The two receiving beams 2 are supported in a projecting manner, a plurality of joists 3 are supported in a projecting manner on the two receiving beams 2, and the photovoltaic module 4 is mounted and supported on these joists 3. A swing support mechanism 6 that supports the photovoltaic module 4 so as to be swingable is interposed between the joist 3 and the photovoltaic module 4, and the unequality of the support 1 is between the support 1 and the receiving beam 2. By interposing the support height adjusting mechanism 7 that can adjust the height of the receiving beam 2 corresponding to the settlement, the distortion of the photovoltaic module 4 due to the uneven settlement of the support column 1 can be reduced. Even if uneven settlement occurs, the photovoltaic module 4 is adjusted by adjusting the height of the receiving beam 2. It is possible to reduce distortion, breakage of the photovoltaic module 4 can be prevented suppressed.

Moreover, the distortion of the photovoltaic module 4 accompanying the uneven settlement of the support | pillar 1 can be made small by making the distance of the horizontal direction between the support | pillars 1 into 6 m or more.
Further, the ratio of the length of one side of the support beam 2 protruding from the support column 1 with respect to the total length of the receiving beam 2 and the ratio of the length of the protrusion side of the joist 3 with respect to the total length of the joist 3 are 0.20. By setting it to 0.22 or less, the strength of the receiving beam 2 and the joists 3 can be reduced, so that their weight can be reduced and the settlement of the land itself can be reduced.

Further, the support height adjustment mechanism 7 includes the inclination angle adjustment mechanism 23 that adjusts the inclination angle of the photovoltaic module 4 with respect to the horizontal plane, thereby adjusting the amount of solar radiation to the photovoltaic module 4 and using the photovoltaic module 4. It is possible to adjust the power generation amount.
Further, the support height adjusting mechanism 7 includes a support member moving mechanism for moving the connecting point of the receiving beam 2 in the vertical direction, and the tilt angle adjusting mechanism 23 rotates the connecting point of the receiving beam 2. With this, it is possible to adjust the inclination angle of the photovoltaic module 4 simply by moving the connecting point of the support column 1 and the receiving beam 2 in the vertical direction.
Further, since the support member moving mechanism includes a restriction mechanism that restricts the movement of the support member 34, the height of the connection point of the receiving beam 2 is easily maintained in a predetermined state.

  1 is a support, 2 is a receiving beam, 3 is a joist, 4 is a photovoltaic module, 5 is a foundation, 6 is a swing support mechanism, 7 is a support height adjustment mechanism, 8 is an anchor bolt, 9 is a nut, and 10 is a support Member, 11 substrate, 12 upper plate, 13 swing mechanism, 14 cover, 15 upper plate portion, 16 vertical plate portion, 17 lower plate portion, 18 mounting portion, 19 mounting member, 20 Is a settling amount monitor, 21 is a tube, 22 is a connecting pipe, 23 is a tilt angle adjusting mechanism, 24 is a base, 25 is an upper plate, 26 is a screw rod (post member), 27 is a lower spherical member, and 28 is Upper spherical member, 29 is bolt, 30 is eye nut, 31 is nut, 32 is pin, 33 is rib, 34 is support member, 35 is rib, 36 is support member, 37 is bolt, 38 is recessed, 39 is bolt, 40 is a rope, 41 is a pulley, 42 is a manual winch, 43 is a band member, 4 is a support base, 45 is a tensioner, 46 is a manual handle, 47 is a movable bracket, 48 is a fixed bracket, 49 is a nut, 50 is a bolt, 51 is a chain, 52 is a support member, 53 is a sprocket, 54 is a bolt, 55 Is a nut

Claims (6)

A photovoltaic module support structure that supports a large number of photovoltaic modules arranged side by side in the vertical direction and the lateral direction, and is arranged at four corners of a square in a plan view and has four pillars that are not connected to the lower part , Two receiving beams supported in a protruding manner for each of the two supporting columns arranged side by side, and a plurality of supporting beams supported in a protruding manner on the two receiving beams and mounting and supporting the photovoltaic module A joist, a rocking support mechanism interposed between the joist and the photovoltaic module and supporting the photovoltaic module so as to be able to rock; A support height adjustment mechanism that can adjust the height of the receiving beam in response to the settlement, and the ratio of the length of one side of the receiving beam that protrudes from the column to the entire length of the receiving beam and the total length of the joist The ratio of the length of one side protruding from the joist beam is 0.20. Photovoltaic module support structure, characterized in that the above 0.22 or less.   The photovoltaic module support structure according to claim 1, wherein a horizontal distance between the columns is 6 m or more. The photovoltaic module support structure according to claim 1 or 2 , wherein the support height adjustment mechanism includes an inclination angle adjustment mechanism that adjusts an inclination angle of the photovoltaic module with respect to a horizontal plane. The support height adjusting mechanism includes a support member moving mechanism for moving the connecting point of the receiving beam in the vertical direction, and the inclination angle adjusting mechanism includes a rotating connecting mechanism for rotating the connecting point of the receiving beam. The photovoltaic module support structure according to claim 3 , wherein The photovoltaic module support structure according to claim 4 , wherein the support member moving mechanism includes a restriction mechanism that restricts movement of the support member. For the photovoltaic module support structure according to any one of claims 1 to 5 ,
It is composed of a transparent resin cup, and a connecting pipe projects from the lower part, and the inside of the resin cup is connected to the outside at the tip of the connecting pipe. Installed at the same height on each of
Insert a tube into the connecting pipe to connect the four sinkage amount monitors,
In that state, liquid is supplied to all the sinkage amount monitors,
When the liquid level height of the liquid inside the subsidence amount monitor changes, the height of the receiving beam of the other column is adjusted according to the column where the liquid level of the liquid inside the subsidence amount monitor is the lowest. A method for adjusting the support height of the photovoltaic module support structure, wherein the support height adjustment mechanism is used for adjustment.

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