Frame connection structure and frame connection method

Abstract

To connect a support frame for a solar cell panel by increasing the connection strength of a support pile flange to a base frame connection member.SOLUTION: A frame connection structure 10 includes a frame connection member 11 having a support connection part 111 and a flange connection plate 112, and a reinforcing member 12 that connects the flange connection plate 112 to a pile flange 1c-1 at a pair of reinforcement points P11 located across the support connection part 111 on a second line L12 that intersects a first line L11 connecting a pair of bolt holes 1c-4 for connection and is parallel to a mounting surface 1c-5 of the frame connection member 11 at the pile flange 1c-1.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a mounting joint structure for joining a support frame of a solar cell panel to a support pile, and a mounting joint method using such a mounting joint structure. [Background technology]

[0002] In response to growing interest in global environmental issues, solar power generation, which is expected to be effective in reducing greenhouse gases, has been attracting attention. In particular, so-called ground-mounted solar power generation facilities, in which a support frame supporting a solar panel is joined to support piles erected in the ground at the installation site, are widely used (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-009321 A Summary of the Invention [Problem to be solved by the invention]

[0004] In most cases, the support frame is joined to the support pile by a frame joining structure using a frame joining member that joins the support frame's column to the pile flange of the support pile. If the joining strength of the frame joining member to the pile flange is insufficient, for example, when the solar panel is blown by the wind, the load may be concentrated on the frame joining member, causing deformation.

[0005] Therefore, the present invention focuses on the above-mentioned problems and aims to provide a mounting joining structure that can join a support mounting for a solar panel by increasing the joining strength of the mounting joining member to the pile flange of the support pile, and a mounting joining method utilizing such a mounting joining structure. [Means for solving the problem]

[0006] In order to solve the above problem, the mounting structure is a mounting structure for connecting a support frame supporting a solar panel to a support pile erected on the ground at an installation location, and the pile head of the support pile is provided with a pile flange, which is a flat flange and has a plurality of bolt holes through which bolts for connection are formed around the axis of the support pile, and the mounting structure is characterized in that it includes a mounting member having a pillar connection portion to which a pillar of the support frame is joined, and a flange connection plate that is flat and has the pillar connection portion erected on one of the front and back surfaces and is placed on the other surface so as to be in contact with the pile flange, and is bolted to the pile flange via a pair of connecting bolt holes selected from the plurality of bolt holes and positioned on either side of the axis, and a reinforcing member that joins the flange connection plate to the pile flange at a pair of reinforcing points positioned on either side of the pillar connection portion on a second line that intersects with a first line connecting the pair of connecting bolt holes and is parallel to the mounting surface of the mounting member on the pile flange.

[0007] In order to solve the above problem, the mounting joining method is a mounting joining method for joining a support frame supporting a solar panel to a support pile erected on the ground at an installation location, the support pile is provided at its head with a pile flange, which is a flat flange and has a plurality of bolt holes formed around an axis of the support pile through which bolts for joining pass, and a support joint portion to which a support frame of the support frame is joined, and a support joint portion which is flat and has one of a front and back surfaces on which the support joint portion is erected and is placed so as to contact the pile flange on the other surface, and which is selected from the plurality of bolt holes. and a reinforcing step of reinforcing the connection of the frame connection member to the pile flange by using a frame connection member having a flange connection plate that is bolted to the pile flange via a pair of connecting bolt holes located on either side of the axis, and a reinforcing step of reinforcing the connection of the frame connection member to the pile flange by using a reinforcing member that joins the flange connection plate to the pile flange at a pair of reinforcing points located on either side of the column connection portion on a second line that intersects with a first line connecting the pair of connecting bolt holes and is parallel to the mounting surface of the frame connection member on the pile flange. Effect of the Invention

[0008] According to the above-described frame joining structure and frame joining method, the joining strength of the frame joining member to the pile flange of the support pile can be increased, thereby joining the support frame of the solar cell panel. [Brief description of the drawings]

[0009] [Figure 1] 1 is a front view showing a photovoltaic power generation facility to which a mounting joint structure according to a first embodiment is applied. [Diagram 2] FIG. 2 is a side view of the solar power generation facility shown in FIG. 1, as viewed from the direction of arrow V11 in FIG. [Diagram 3] 3 is an enlarged side view showing one of the mounting joint structures shown in the side view of FIG. 2. FIG. [Figure 4] 4 is a plan view of the mounting joint structure shown in FIG. 3, as viewed in the direction of arrow V12 in FIG. [Diagram 5] 4 is a top view of the mounting joint structure shown in FIG. 3, as viewed in the direction of arrow V13 in FIG. [Figure 6] FIG. 6 is a three-view diagram showing the flat bar shown in FIGS. 3 to 5. [Figure 7] FIG. 6 is a three-view diagram showing the pressing fitting shown in FIGS. 3 to 5. [Figure 8] FIG. 8 is a schematic diagram showing a sequence of steps of a reinforcing process using the reinforcing member shown in FIGS. 3 to 7. [Figure 9] This is a top view equivalent to Figure 5, which shows that reinforcement by a reinforcing member is possible even when the mounting joint member is maximally misaligned in one radial direction perpendicular to the joint wall relative to the pile flange. [Figure 10] This is a top view equivalent to Figure 5, which shows that reinforcement by reinforcing members is possible even when the mounting joint member is misaligned to the maximum extent around the axis relative to the pile flange. [Figure 11] FIG. 11 is an enlarged side view showing one of the gantry joint structures in the second embodiment. [Figure 12] 12 is a plan view of the mounting joint structure shown in FIG. 11, as viewed in the direction of arrow V21 in FIG. [Figure 13] 12 is a top view of the mounting joint structure shown in FIG. 11, as viewed in the direction of arrow V22 in FIG. [Figure 14] FIG. 11 is an enlarged side view showing one of the gantry joint structures in the third embodiment. [Figure 15] 15 is a plan view of the mounting joint structure shown in FIG. 14, as viewed in the direction of arrow V31 in FIG. 14. [Figure 16] 15 is a top view of the mounting joint structure shown in FIG. 14, as viewed in the direction of arrow V32 in FIG. 14. [Figure 17] FIG. 13 is an enlarged side view showing one of the mounting joint structures in the fourth embodiment. [Figure 18] 18 is a plan view of the mounting joint structure shown in FIG. 17, as viewed in the direction of arrow V41 in FIG. 17. FIG. [Figure 19] 18 is a top view of the mounting joint structure shown in FIG. 17, as viewed in the direction of arrow V42 in FIG. 17. FIG. [Figure 20] FIG. 14 is a top view equivalent to FIG. 13, showing one of the mounting joint structures in the fifth embodiment. [Figure 21] 21 is a plan view of the mounting joint structure shown in FIG. 20, as viewed in the direction of arrow V51 in FIG. 20. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of a gantry joining structure and a gantry joining method will be described with reference to the drawings. First, a first embodiment will be described.

[0011] FIG. 1 is a front view showing a solar power generation facility to which the mounting joint structure of the first embodiment is applied, and FIG. 2 is a side view of the solar power generation facility shown in FIG. 1 as viewed from the direction of arrow V11 in FIG. 1.

[0012] The solar power generation facility 1 of this embodiment is an array structure facility in which a plurality of solar cell panels 1a are arranged in a lattice pattern. The solar power generation facility 1 is a so-called field structure facility in which a support frame 1b that supports the plurality of solar cell panels 1a in an inclined state is joined to a plurality of support piles 1c erected on the ground G11 at the installation location. The support frame 1b has a structure in which a support frame 1b-3 in which a plurality of vertical beams 1b-1 and a plurality of horizontal beams 1b-2 are combined in a lattice pattern is supported by a plurality of support columns 1b-4 extending vertically and obliquely. The support frame 1b-3 supports a plurality of solar cell panels 1a, and the lower ends of the plurality of support columns 1b-4 that support the support frame 1b-3 are joined to the support piles 1c, which are screw piles installed at corresponding positions. The lower ends of the support piles 1b-4 are joined to the support piles 1c via a frame joining structure 10 described below.

[0013] Fig. 3 is an enlarged side view showing one of the mounting joint structures shown in the side view of Fig. 2. Fig. 4 is a plan view of the mounting joint structure shown in Fig. 3 as seen from the direction of arrow V12 in Fig. 3, and Fig. 5 is a top view of the mounting joint structure shown in Fig. 3 as seen from the direction of arrow V13 in Fig. 3.

[0014] This mounting joint structure 10 is a structure for joining a support column 1b-4 of a support frame 1b to a pile flange 1c-1 provided at the head of a support pile 1c. In this embodiment, the mounting joint structure 10 joins two supports 1b-4, one in the vertical direction and the other in the diagonal direction, to the pile flange 1c-1. Here, the pile flange 1c-1 is a disk-shaped flange, and a plurality of bolt holes 1c-2 through which a joining bolt 10a penetrates are arranged at equal angular intervals around the axis 1c-3 of the support pile 1c. In addition, each bolt hole 1c-2 is an elongated hole extending in the radial direction D12 of the disk-shaped pile flange 1c-1. The mounting joint structure 10 includes a mounting joint member 11 and a reinforcing member 12.

[0015] The frame joint member 11 has a column joint portion 111 to which the two columns 1b-4 of the support frame 1b are joined, and a flange joint plate 112 on which the column joint portion 111 is erected and which is bolted to the pile flange 1c-1. The flange joint plate 112 is formed in a rectangular flat plate shape having a smaller area in a plan view than the disk-shaped pile flange 1c-1, and the column joint portion 111 is erected on one of the front and back surfaces and is placed so as to contact the pile flange 1c-1 on the other surface. The flange joint plate 112 is bolted to the pile flange 1c-1 through a pair of joining bolt holes 1c-4 located on either side of the axis 1c-3, selected from the multiple bolt holes 1c-2 in the pile flange 1c-1.

[0016] The column joint portion 111 has a pair of joint walls 111a which are erected on the flange joint plate 112 with the two columns 1b-4 sandwiched therebetween and which are joined together by bolts 11a and nuts 11b. The pair of joint walls 111a are erected in the center between a pair of sides of the rectangular flange joint plate 112 so as to extend along these sides. In addition, in each joint wall 111a, two column bolt holes 111a-1 are formed in the shape of elongated holes extending in the direction D11 perpendicular to the flange joint plate 112 for joining the two columns 1b-4 together. The bolt 11a penetrates the column 1b-4 through the column bolt hole 111a-1 of one joint wall 111a, and then the end of the bolt 11a protrudes from the column bolt hole 111a-1 of the other joint wall 111a, and the nut 11b is fastened to the end. As a result, in this embodiment, two pillars 1b-4 are joined to the pillar joint portion 111 having the pair of joint walls 111a. In addition, the pillar bolt hole 111a-1 is formed in an elongated hole shape, so that the joint position of the pillar 1b-4 can be adjusted in the orthogonal direction D11.

[0017] The flange joint plate 112 is formed with a pair of frame-side bolt holes 112a, which are elongated holes that cross and overlap the pair of joint bolt holes 1c-4 when placed on the pile flange 1c-1. The bolt 10a for jointing the pile flange 1c-1 passes through the frame-side bolt hole 112a of the flange joint plate 112 and the joint bolt hole 1c-4 of the pile flange 1c-1, and a nut 10b is fastened to the end of the bolt. This allows the flange joint plate 112 to be bolted to the pile flange 1c-1. Since the pile flange 1c-1 is provided with a plurality of bolt holes 1c-2 around the axis 1c-3 and the joint bolt hole 1c-4 is selected, it is possible to adjust the joint position of the flange joint plate 112, that is, the frame joint member 11, around the axis 1c-3. In addition, the bolt hole 1c-2 (joint bolt hole 1c-4) of the pile flange 1c-1 and the frame-side bolt hole 112a of the flange joint plate 112 are both formed in an elongated hole shape. As a result, if the bolt hole 1c-2 and the frame-side bolt hole 112a intersect in a state in which the bolt 10a can pass through the intersection, the positional deviation around the axis 1c-3 and the positional deviation in the radial direction D12 between the frame joint member 11 and the pile flange 1c-1 are absorbed.

[0018] Here, in this embodiment, the mounting joint member 11 described above is a member that joins the support 1b-4 to the pile flange 1c in the existing photovoltaic power generation facility. The reinforcing member 12 constituting the mounting joint structure 10 of this embodiment is a member that is additionally installed in this existing photovoltaic power generation facility and reinforces the joint of the mounting joint member 11 to the pile flange 1c. The photovoltaic power generation facility 1 shown in Figs. 1 and 2 is the facility after reinforcement with the reinforcing member 12.

[0019] The reinforcing member 12 reinforces the joint of the frame joint member 11 by joining the flange joint plate 112 to the pile flange 1c-1 at a pair of reinforcing points P11 as follows. As shown in FIG. 5, the pair of reinforcing points P11 are a pair of points on a second line L12 that intersects with a first line L11 connecting a pair of joining bolt holes 1c-4 and is parallel to the mounting surface 1c-5 of the frame joint member 11 on the pile flange 1c-1. The pair of reinforcing points P11 are located on the second line L12 on the outer periphery of the pile flange 1c-1, sandwiching the support joint portion 111 of the frame joint member 11. The reinforcing member 12 includes one flat bar 121 and a pair of clamping metal fittings 122.

[0020] FIG. 6 is a three-view drawing showing the flat bar shown in FIGS. 3 to 5, and FIG. 7 is a three-view drawing showing the pressing fitting shown in FIGS.

[0021] The flat bar 121 is a rectangular band-shaped member that is overlapped on the flange joint plate 112 so as to extend along the second line L12 including the pair of reinforcing points P11. The flat bar 121 is overlapped on the flange joint plate 112 between the pair of joint walls 111a that constitute the column joint portion 111. A pair of reinforcing bolt holes 121a corresponding to the pair of reinforcing points P11 is provided on both ends of the flat bar 121.

[0022] The clamping metal fitting 122 is a member that is bolted to the flat bar 121 at each reinforcing point P11 so as to sandwich the flange joint plate 112 and the pile flange 1c-1 between the flat bar 121 and the clamping metal fitting 122. The clamping metal fitting 122 is a sheet metal processing member with a U-shaped cross section, in which a pair of side wall portions 122b are folded up from a pair of long sides of a rectangular plate-shaped bottom wall portion 122a arranged facing the flat bar 121 toward the flat bar 121 side. The side wall portion 122b is formed with a flange receiving portion 122c and a bar receiving portion 122d in a stepped shape from the bottom wall portion 122a side so that the clamping metal fitting 122 can be attached from the back side of the pile flange 1c-1. The clamping metal fitting 122 is attached so that the flange receiving portion 122c receives the pile flange 1c-1 and the bar receiving portion 122d receives the end of the flat bar 121. A metal fitting bolt hole 122e is formed in the bottom wall portion 122a at a position corresponding to the reinforcing bolt hole 121a at the end of the flat bar 121. The pressing metal fitting 122 is bolted to the flat bar 121 as follows: That is, the above bolt connection is performed by tightening a reinforcing nut 12d via a flat washer 12b and a spring washer 12c to the tip side of a reinforcing bolt 12a that passes through the reinforcing bolt hole 121a and the metal fitting bolt hole 122e from the flat bar 121 side.

[0023] In the frame joining method including the reinforcement by attaching the reinforcing member 12, first, when the existing photovoltaic power generation facility is installed, a frame joining process is performed in which the support frame 1b is joined to the pile flange 1c-1 using the frame joining member 11. After that, at an appropriate reinforcement timing, a reinforcement process is performed using the reinforcing member 12 as described below.

[0024] FIG. 8 is a schematic diagram showing a sequence of steps of a reinforcing process using the reinforcing member shown in FIGS.

[0025] In this reinforcing process, first, a bar attachment process S11 is performed in which the flat bar 121 is overlapped on the flange joint plate 112 of the frame joint member 11. In this bar attachment process S11, in order to secure an attachment space for the flat bar 121 between the pair of joint walls 111a as the pillar joint portion 111, the two pillars 1b-4 joined to the pillar joint portion 111 are pulled up in a pulling-up direction D13. The flat bar 121 is inserted by sliding it in an insertion direction D14 from the side along the joint walls 111a into the space between the pair of joint walls 111a opened by this pulling-up.

[0026] Next, a metal fittings arrangement step S12 is performed in which a pair of pressing metal fittings 122 is arranged on both ends of the flat bar 121 from the back side of the pile flange 1c-1. In this metal fittings arrangement step S12, the pair of pressing metal fittings 122 are arranged so as to sandwich the flange joint plate 112 and the pile flange 1c-1 between the flat bar 121. Furthermore, the reinforcing bolts 12a penetrate each member, and the reinforcing nuts 12d are temporarily tightened via the flat washers 12b and the spring washers 12c.

[0027] Finally, a torque tightening step S13 is performed by tightening the reinforcing nuts 12d on the reinforcing bolts 12a with a predetermined torque, completing the reinforcement of the joint of the frame joint member 11 to the pile flange 1c-1 by the reinforcing member 12. This torque tightening step S13 completes one frame joint structure 10 in which two columns 1b-4 are joined to one pile flange 1c-1 with reinforcement.

[0028] Here, as described above, in this embodiment, the formation of multiple bolt holes 1c-2 in the pile flange 1c-1 makes it possible to adjust the joint position of the frame joint member 11 around the axis 1c-3 of the frame joint member 11. In addition, the formation of long holes in each bolt hole 1c-2 and the frame side bolt hole 112a makes it possible to absorb the positional deviation around the axis 1c-3 between the frame joint member 11 and the pile flange 1c-1 and the positional deviation in the radial direction D12. The illustrated example in Figures 3 to 5 is an example in which the frame joint member 11 is joined to the pile flange 1c-1 in a state where it is maximally shifted in one direction along the joint wall 111a in the radial direction D12. The reinforcing member 12 is movable relative to the frame joint member 11 along the joint wall 111a, and the flange joint plate 112 is sandwiched between the flat bar 121 and a pair of clamping metal fittings 122. In addition, a pair of reinforcing points P11 where the pair of clamping metal fittings 122 in this reinforcing member 12 are bolted to the flat bar 121 are set on the outer periphery of the pile flange 1c-1, so that reinforcement is possible even in a misaligned state as shown in the examples of Figures 3 to 5. Reinforcement by the reinforcing member 12 is also possible in other misaligned states between the mounting joint member 11 and the pile flange 1c-1 as follows.

[0029] Fig. 9 is a top view equivalent to Fig. 5, which shows that reinforcement by a reinforcing member is possible even when the mounting joint member is displaced to the maximum extent relative to the pile flange in one direction perpendicular to the joint wall among the radial directions. Also, Fig. 10 is a top view equivalent to Fig. 5, which shows that reinforcement by a reinforcing member is possible even when the mounting joint member is displaced to the maximum extent relative to the pile flange around the axis.

[0030] In the mounting joint structure 10 in Fig. 9, no positional deviation occurs in the radial direction D12 along the joint wall 111a, and the mounting joint member 11 is in a state of being maximally deviated from the pile flange 1c-1 in one direction (rightward in Fig. 9) perpendicular to the joint wall 111a. In the mounting joint structure 10 in Fig. 10, no positional deviation occurs in the radial direction D12, and the mounting joint member 11 is in a state of being maximally deviated from the pile flange 1c-1 in the rotation direction D15 around the axis 1c-3 (counterclockwise in Fig. 10). In either state of deviation, the reinforcing member 12 can move relative to the mounting joint member 11, and a pair of reinforcing points P11 are set on the outer periphery outside the pile flange 1c-1, so that reinforcement by the reinforcing member 12 is possible.

[0031] The frame joint structure 10 and frame joint method of the first embodiment described above can achieve the following effects. That is, according to this embodiment, the flange joint plate 112 of the frame joint member 11, which is bolted to the pile flange 1c-1 through a pair of joint bolt holes 1c-4, is further joined to the pile flange 1c-1 by additional installation of the reinforcing member 12. Then, the additional joining by the reinforcing member 12 is performed at a pair of reinforcing points P11 located on either side of the support column joint portion 111 on a second line L12 that intersects with the first line L11 connecting the pair of joint bolt holes 1c-4 and is parallel to the mounting surface 1c-5 of the frame joint member 11. By the additional joining by the reinforcing member 12, even if the solar cell panel 1a is blown by the wind, the load applied to the frame joint member 11 through the support column 1b-4 of the support frame 1b is distributed to the pair of reinforcing points P11 without being concentrated on the pair of joint bolt holes 1c-4. Such reinforcement that distributes the load increases the joint strength of the frame joint member 11. That is, according to this embodiment, the joint strength of the frame joint member 11 to the pile flange 1c-1 of the support pile 1c can be increased to join the support frame 1b of the solar cell panel 1a.

[0032] Here, in this embodiment, a plurality of elongated holes extending in the radial direction D12 of the pile flange 1c-1 are formed around the axis 1c-3 as bolt holes 1c-2. In addition, in the flange joint plate 112 of the frame joint member 11, a pair of frame-side bolt holes 112a are formed as elongated holes extending so as to intersect and overlap with the pair of joining bolt holes 1c-4 one-to-one when the frame joint member 11 is placed on the pile flange 1c-1. According to this configuration, the frame joint member 11 can be joined to the pile flange 1c-1 while absorbing positional deviation along the elongated bolt holes 1c-2 formed in the pile flange 1c-1 and the frame-side bolt holes 112a formed in the flange joint plate 112.

[0033] In this embodiment, the reinforcing member 12 is a member that is additionally installed in the existing photovoltaic power generation facility to reinforce the connection of the frame joint member 11 to the pile flange 1c-1, and the photovoltaic power generation facility 1 in Fig. 1 and Fig. 2 is such a reinforced facility. With this configuration, the frame joint member 11 in the existing photovoltaic power generation facility can be used as it is without additional work or replacement of the member, and the joint strength of the frame joint member 11 can be increased by simply attaching the reinforcing member 12.

[0034] In this embodiment, the reinforcing member 12 includes one flat bar 121 that is overlapped on the flange joint plate 112, and a pair of clamping metal fittings 122. The pair of clamping metal fittings 122 are bolted to the flat bar 121 so as to sandwich the flange joint plate 112 and the pile flange 1c-1 between the flat bar 121 and the pair of clamping metal fittings 122. With this configuration, the joining strength of the frame joint member 11 by the reinforcing member 12 can be effectively improved by the easy-to-operate work of overlapping the one flat bar 121 and bolting the pair of clamping metal fittings 122.

[0035] In this embodiment, the pillar joint portion 111 is a pair of joint walls 111a that sandwich the pillar 1b-4 therebetween, and the flat bar 121 is overlapped on the flange joint plate 112 between the pair of joint walls 111a. With this configuration, the flat bar 121 is overlapped on the flange joint plate 112 in a state where it is sandwiched and positioned between the pair of joint walls 111a that constitute the pillar joint portion 111, so that the workability of the bolt joining of the press fitting 122 thereafter can be improved.

[0036] Next, a second embodiment will be described. The second embodiment will be described by focusing on the differences from the first embodiment. In addition, the photovoltaic power generation equipment and the mounting joining method are generally the same as the mounting joining method of the first embodiment except for the members used for reinforcement, and therefore the explanation will be omitted. These points are also the same in the explanations of the third and subsequent embodiments.

[0037] Fig. 11 is an enlarged side view showing one of the mounting joint structures in the second embodiment. Fig. 12 is a plan view of the mounting joint structure shown in Fig. 11, seen from the direction of the arrow V21 in Fig. 11, and Fig. 13 is a top view of the mounting joint structure shown in Fig. 11, seen from the direction of the arrow V22 in Fig. 11. In Figs. 11 to 13, the same reference numerals as in Figs. 3 to 5 are used for the components equivalent to those in the first embodiment shown in Figs. 3 to 5, and the following description of the equivalent components will be omitted.

[0038] In the second embodiment, a member to which a pair of press fittings 122 are bolted at a pair of reinforcing points P11 in a reinforcing member 22 of a frame joint structure 20 differs from that in the first embodiment. In this embodiment, the reinforcing member 22 includes a pair of flat pieces 221 as this member.

[0039] The pair of flat pieces 221 are formed in a rectangular plate shape, and are arranged along the second line L12 intersecting the first line L11 so as to correspond one-to-one to the pair of reinforcing points P11, and are superimposed on the flange joint plate 112. The pair of flat pieces 221 are formed by cutting off a portion of both ends of the flat bar 121 in the first embodiment described above to form independent members. Each of the pair of pressing metal fittings 122 is bolted to the pair of flat pieces 221 one-to-one so as to sandwich the flange joint plate 112 and the pile flange 1c-1 of the frame joint member 11 between the pair of flat pieces 221. Each flat piece 221 is superimposed on the flange joint plate 112 between the pair of joint walls 111a in the column joint portion 111, and is bolted to each pressing metal fitting 122 by the reinforcing bolt 12a, the flat washer 12b, the spring washer 12c, and the reinforcing nut 12d.

[0040] It goes without saying that, like the first embodiment described above, the second embodiment described above can increase the joining strength of the mounting joining member 11 to the pile flange 1c-1 of the support pile 1c, thereby joining the support mounting 1b of the solar cell panel 1a shown in Figures 1 and 2.

[0041] Next, a third embodiment will be described.

[0042] Fig. 14 is an enlarged side view showing one of the mounting joint structures in the third embodiment. Fig. 15 is a plan view of the mounting joint structure shown in Fig. 14, seen from the direction of the arrow V31 in Fig. 14, and Fig. 16 is a top view of the mounting joint structure shown in Fig. 14, seen from the direction of the arrow V32 in Fig. 14. In Figs. 14 to 16, the same reference numerals as in Figs. 3 to 5 are used for the components equivalent to those in the first embodiment shown in Figs. 3 to 5, and the following description of the equivalent components will be omitted.

[0043] In the third embodiment, the reinforcing member 32 of the mounting joint structure 30 includes one flat bar 321, but does not include a configuration corresponding to the pair of clamping metal fittings 122 in the first embodiment. In this embodiment, a pair of reinforcing points P31 in the reinforcing member 32 overlaps a pair of reinforcing bolt holes 3c-1 selected from the bolt holes 1c-2 excluding the pair of joining bolt holes 1c-4 among the multiple bolt holes 1c-2 in the pile flange 1c-1. The flat bar 321 in the reinforcing member 32 is overlapped on the flange joint plate 112 between the pair of joint walls 111a in the column joint portion 111. At this time, the flat bar 321 is overlapped on the flange joint plate 112 so as to extend along the second line L12 that includes the pair of reinforcing points P31 and intersects with the above-mentioned first line L11. Then, the flat bar 321 is bolted to the pile flange 1c-1 through the pair of reinforcing bolt holes 3c-1 in the pile flange 1c-1 at the reinforcing points P31 at both ends. This bolt connection is performed by tightening a reinforcing nut 32d from the flat bar 321 side via a flat washer 32b and a spring washer 32c onto a reinforcing bolt 32a that penetrates the reinforcing bolt hole 3c-1 and the flat bar 321 from the back side of the pile flange 1c-1.

[0044] It goes without saying that, like the first embodiment described above, the third embodiment described above can increase the joining strength of the mounting joining member 11 to the pile flange 1c-1 of the support pile 1c, thereby joining the support mounting 1b of the solar cell panel 1a shown in Figures 1 and 2.

[0045] In this embodiment, the reinforcing member 32 is a flat bar 321 that is bolted to the pile flange 1c-1 through a pair of reinforcing bolt holes 3c-1. With this configuration, some of the bolt holes 1c-2 in the pile flange 1c are used as the reinforcing bolt holes 3c-1, thereby reducing the number of components of the reinforcing member 32 and the part costs.

[0046] Next, a fourth embodiment will be described. The fourth embodiment is a modification of the third embodiment.

[0047] Fig. 17 is an enlarged side view showing one of the mounting joint structures in the fourth embodiment. Fig. 18 is a plan view of the mounting joint structure shown in Fig. 17, seen from the direction of arrow V41 in Fig. 17, and Fig. 19 is a top view of the mounting joint structure shown in Fig. 17, seen from the direction of arrow V42 in Fig. 17. In Figs. 17 to 19, components equivalent to those of the third embodiment shown in Figs. 14 to 16 are given the same reference numerals as those in Figs. 14 to 16 for the purposes of explanation, and duplicate explanations of those equivalent components will be omitted below.

[0048] In the fourth embodiment, the member that is bolted to the pile flange 1c-1 at a pair of reinforcing points P31 in the reinforcing member 42 of the mounting joint structure 40 is different from that in the third embodiment. In this embodiment, the reinforcing member 42 includes a pair of flat pieces 421 as this member.

[0049] The pair of flat pieces 421 are formed in a rectangular flat plate shape, and are arranged along the second line L12 intersecting with the first line L11 so as to correspond one-to-one to the pair of reinforcing points P31, and are superimposed on the flange joint plate 112. The pair of flat pieces 421 are formed by cutting off a portion of both ends of the flat bar 321 in the third embodiment described above to form independent members. The pair of flat pieces 421 are bolted to the pile flange 1c-1 through the reinforcing bolt holes 3c-1 so as to sandwich the flange joint plate 112 of the frame joint member 11 between the pile flange 1c-1. In addition, each flat piece 421 is superimposed on the flange joint plate 112 between the pair of joint walls 111a in the column joint portion 111, and is bolted to the pile flange 1c-1 by the reinforcing bolt 32a, the flat washer 32b, the spring washer 32c, and the reinforcing nut 32d.

[0050] It goes without saying that the fourth embodiment described above, like the third embodiment described above, can increase the joining strength of the mounting joining member 11 to the pile flange 1c-1 of the support pile 1c, thereby joining the support mounting 1b of the solar cell panel 1a shown in Figures 1 and 2.

[0051] Next, a fifth embodiment will be described. The fifth embodiment is a modification of the second embodiment.

[0052] Fig. 20 is a top view equivalent to Fig. 13 showing one of the mounting joint structures in the fifth embodiment. Fig. 21 is a plan view of the mounting joint structure shown in Fig. 20, seen from the direction of arrow V51 in Fig. 20. In Figs. 20 and 21, components equivalent to those in the second embodiment shown in Figs. 11 to 13 are given the same reference numerals as in Figs. 11 to 13 for those necessary for explanation, and duplicate explanations of those equivalent components will be omitted below.

[0053] In the fifth embodiment, similarly to the second embodiment, the reinforcing member 52 of the frame joint structure 50 includes a pair of flat pieces 521 and a pair of pressing metal fittings 522. These flat pieces 521 and pressing metal fittings 522 are basically the same as the flat pieces 221 and pressing metal fittings 122 of the second embodiment, but the attachment positions and attachment method according to the pair of reinforcing points P51 are different from those of the second embodiment.

[0054] In this embodiment, the second line L52 including the pair of reinforcing points P51 is not a perpendicular line to the first line L11 connecting the pair of joining bolt holes 1c-4, but is a diagonal line that diagonally intersects with the first line L11. Furthermore, the flat pieces 521 and the pressing metal fittings 522 are arranged as follows according to the pair of reinforcing points P51 located on the second line L52 as the diagonal line, sandwiching the support joint portion 111 of the frame joint member 11, to configure the reinforcing member 52.

[0055] First, in this embodiment, unlike the second embodiment, the flat piece 521 is disposed on the back side of the pile flange 1c-1, and the pressing metal fittings 522 are overlapped on the flange joint plate 112 of the frame joint member 11. The pair of pressing metal fittings 522 are overlapped diagonally on both side corners of the flange joint plate 112, avoiding the standing range A51 of the pair of joint walls 111a including the space between the pair of joint walls 111a. The pair of flat pieces 521, which sandwich the pile flange 1c-1 and the flange joint plate 112 between the pair of pressing metal fittings 522, are disposed so that the support pile 1c is located between their ends. Then, each pressing metal fitting 522 is bolted to each flat piece 521 by the reinforcing bolt 12a, the flat washer 12b, the spring washer 12c, and the reinforcing nut 12d.

[0056] It goes without saying that the fifth embodiment described above, like the second embodiment described above, can increase the joining strength of the mounting joining member 11 to the pile flange 1c-1 of the support pile 1c, thereby joining the support mounting 1b of the solar cell panel 1a shown in Figures 1 and 2.

[0057] In this embodiment, the pair of pressing metal fittings 522 are overlapped on the flange joint plate 112, avoiding the erection range A51 of the pair of joint walls 111a. With this configuration, regardless of the orientation of the joint wall 111a when the frame joint member 11 is placed on the pile flange 1c-1, the flat piece 521 and the pressing metal fittings 522 can be attached with a high degree of freedom by using any position as a pair of reinforcing points P51.

[0058] The first to fifth embodiments described above merely show typical forms of the gantry joining structure and the gantry joining method, and the gantry joining structure and the gantry joining method are not limited to these embodiments. That is, the gantry joining structure and the gantry joining method can be implemented with various modifications.

[0059] For example, in the above-mentioned first to fifth embodiments, as an example of a frame joining structure and a frame joining method, the frame joining structures 10,...,50 and frame joining methods for joining two columns 1b-4 extending from a lattice-shaped support frame 1b-3 to a support pile 1c are exemplified. However, the frame joining structure and the frame joining method are not limited to this, and as long as the columns of the support frame are joined to the pile flanges of the support piles, the specific shape of the support frame to be joined and the number of columns joined to the pile flanges can be set arbitrarily.

[0060] In the above-mentioned first to fifth embodiments, the reinforcing members 12,...,52 in which the bolt fastening direction of the reinforcing bolts 12a, 32a is set from either the front or back side of the pile flange 1c-1 is exemplified as an example of the reinforcing member. However, the bolt fastening direction of the reinforcing member is not limited to either the front or back side of the pile flange, and the bolt fastening may be performed from either side. [Explanation of symbols]

[0061] 1. Solar power generation equipment 1a Solar panel 1b Support stand 1b-1 Vertical beam 1b-2 Crosspiece 1b-3 Support frame 1b-4 Post 1c support pile 1c-1 Pile flange 1c-2, Bolt hole 1c-3 axis center 1c-4 Connection bolt holes 1c-5 Placement surface 10,20,30,40,50 Frame joint structure 10a,11a Bolts 10b,11b Nut 11 Mounting joint members 12, 22, 32, 42, 52 Reinforcement members 12a, 32a Reinforcement bolt 12b, 32b flat washer 12c,32c spring washer 12d,32d Reinforcement nut 111 Post joint part 111a Joint wall 111a-1 Pillar bolt hole 112 Flange joint plate 112a Mount side bolt hole 121,321 Flat Bar 121a,3c-1 Reinforcement bolt holes 122,522 Clamp 122a Bottom wall part 122b Side wall part 122c Flange receiving part 122d Bar support 122e Metal fitting side bolt hole 221,421,521 flat pieces A51 Standing range D11 Orthogonal direction D12 Radial D13 Pulling direction D14 Insertion direction D15 Rotation direction G11 Earth L11 1st Line L12,L52 2nd line P11, P31, P51 reinforcement points S11 Bar installation process S12 Metal fittings placement process S13 Torque tightening process

Claims

1. A mounting structure for connecting a support frame supporting a solar panel to a support pile erected on the ground at an installation location, The pile head of the support pile is provided with a pile flange having a flat flange and a plurality of bolt holes through which bolts for joining are inserted around the axis of the support pile, A frame joint member having a column joint portion to which the column of the support frame is joined, and a flange joint plate having a flat shape, the column joint portion being erected on one of the front and back faces and placed so as to contact the pile flange on the other face, and being bolted to the pile flange through a pair of joining bolt holes located on either side of the axis selected from the plurality of bolt holes; A reinforcing member that joins the flange joint plate to the pile flange at a pair of reinforcing points located on either side of the support joint portion on a second line that intersects with a first line connecting the pair of joining bolt holes and is parallel to the mounting surface of the mounting member of the frame joint member in the pile flange; A mounting structure comprising:

2. The reinforcing member is A flat bar that is a strip-shaped member and is superimposed on the flange joint plate so as to extend along the second line including the pair of reinforcing points, or a pair of flat pieces that are formed in a flat plate shape and arranged along the second line so as to correspond one-to-one to the pair of reinforcing points, and are superimposed on one of the flange joint plate and the pile flange; At each of the pair of reinforcing points, a pair of clamping fittings are bolted to the flat bar or the pair of flat pieces so as to sandwich the flange joint plate and the pile flange between the flat bar or the pair of flat pieces; The mounting structure according to claim 1, further comprising:

3. The support column joint portion has a pair of joint walls that are erected on the flange joint plate with the support column sandwiched therebetween and are joined together by bolts, The mounting structure according to claim 2, wherein the flat bar or the pair of flat pieces is overlapped on the flange joint plate between the pair of joint walls.

4. A pair of joint walls, each of which is erected on the flange joint plate with the pillar between them and is joined to the pillar by bolts, The mounting structure according to claim 2, characterized in that the pair of flat pieces or the pair of clamping fittings are overlapped on the flange joint plate while avoiding the upright area of ​​the pair of joint walls, including the area between the pair of joint walls.

5. The pair of reinforcing points are locations overlapping a pair of reinforcing bolt holes selected from the bolt holes excluding the pair of joining bolt holes, The reinforcing member is A flat bar that is a strip-shaped member that is overlapped on the flange joint plate so as to extend along the second line including the pair of reinforcing points and is bolted to the pile flange through the pair of reinforcing bolt holes; or A pair of flat pieces formed in a flat plate shape, arranged along the second line so as to correspond one-to-one to the pair of reinforcing points, overlapped on the flange joining plate, and bolted to the pile flange through the pair of reinforcing bolt holes; The mounting structure according to claim 1, further comprising:

6. A mounting joining method for joining a support frame supporting a solar panel to a support pile erected on the ground at an installation location, comprising: The pile head of the support pile is provided with a pile flange having a flat flange and a plurality of bolt holes through which bolts for joining are inserted around the axis of the support pile, a support joining process for joining the support frame to the pile flange using a support joining member having a support joint portion to which the support frame is joined, and a flange joining plate having a flat shape, the support joint portion being erected on one of the front and back faces and placed so as to contact the pile flange on the other face, and being bolted to the pile flange through a pair of joining bolt holes located on either side of the axis selected from the plurality of bolt holes; A reinforcing step of reinforcing the connection of the mounting joint member to the pile flange by using a reinforcing member that joins the flange joint plate to the pile flange at a pair of reinforcing points located on either side of the support joint portion on a second line that intersects with a first line connecting the pair of connecting bolt holes and is parallel to the mounting surface of the mounting joint member in the pile flange; A mounting joining method comprising:

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