Photovoltaic guardrail

Abstract

The utility model provides a photovoltaic guardrail. The photovoltaic guardrail comprises a plurality of stand columns arranged at intervals; the at least one photovoltaic panel is located between the adjacent stand columns; the at least one first fixing piece is fixed at the first end of the stand column, and the first fixing piece is used for fixing the first end of the photovoltaic panel; the at least one second fixing piece is fixed at the second end of the stand column, and the second fixing piece is used for fixing the second end of the photovoltaic panel; wherein the first fixing piece is provided with a first mounting groove; according to the invention, the first end of the photovoltaic panel is embedded into the first mounting groove, and the wiring space is defined by the first end of the photovoltaic panel and the inner wall of the first fixing part in the first mounting groove, so that a wire connected with the photovoltaic panel can be mounted in the wiring space defined by the photovoltaic panel and the inner wall of the first fixing part. Finally, the structure of the photovoltaic guardrail is simplified, and the manufacturing cost of the photovoltaic guardrail is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of clean energy, in particular to a photovoltaic guardrail. BACKGROUND

[0002] At present, since the building guardrail is usually installed in the area with good lighting such as the balcony and the terrace of the building, the photovoltaic panel is installed in the building guardrail to generate solar energy, which can effectively improve the income of the building and reduce the energy consumption of the building. However, the photovoltaic panel needs to export electric energy through the wire when generating solar energy, so the existing photovoltaic guardrail needs to further set a wire installation structure (such as a junction box), which leads to the problem of complex structure of the current photovoltaic guardrail. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a photovoltaic guardrail, which aims to solve the above technical problems.

[0004] In a first aspect, the present application provides a photovoltaic guardrail, comprising:

[0005] a plurality of spaced-apart upright columns;

[0006] at least one photovoltaic panel, the photovoltaic panel being located between adjacent upright columns;

[0007] at least one first fixing member, the first fixing member being fixed to a first end of the upright column, the first fixing member fixing a first end of the photovoltaic panel;

[0008] at least one second fixing member, the second fixing member being fixed to a second end of the upright column, the second fixing member fixing a second end of the photovoltaic panel;

[0009] wherein the first fixing member has a first mounting groove, the first end of the photovoltaic panel is embedded in the first mounting groove and the first end of the photovoltaic panel and the inner wall of the first fixing member define a wire routing space in the first mounting groove.

[0010] In some embodiments, the first fixing member has a first bottom wall, a first top wall, a first side wall and a second side wall;

[0011] the two sides of the first bottom wall are connected with the first side wall and the second side wall respectively, and the first top wall is connected with the first side wall;

[0012] wherein the width of the first top wall is smaller than the first bottom wall, and the first bottom wall, the first top wall, the first side wall and the second side wall define the first mounting groove;

[0013] After the first end of the photovoltaic panel is embedded in the first mounting groove, the photovoltaic panel, the first bottom wall, the first side wall and the first top wall define the wire routing space.

[0014] In some embodiments, the height of the first side wall is greater than the height of the second side wall.

[0015] In some embodiments, the second fixing member has a second mounting slot;

[0016] The second fixing member has a second mounting slot, and the second end of the photovoltaic panel is embedded in the second mounting slot.

[0017] In some embodiments, the second fixing member has a second bottom wall, a third side wall, and a fourth side wall;

[0018] The second bottom wall is connected with the third side wall and the fourth side wall respectively, and the second bottom wall, the third side wall, and the fourth side wall enclose to define the second mounting slot.

[0019] In some embodiments, the first fixing member is fixed to the first end of each column, and the first fixing member fixes the first end of each photovoltaic panel;

[0020] Each second fixing member is fixed to the second end of a column, and each second fixing member fixes the second end of two adjacent photovoltaic panels.

[0021] In some embodiments, the first end of each photovoltaic panel is embedded in the first mounting slot of the same first fixing member;

[0022] The second end of each photovoltaic panel is partially embedded in the second mounting slot of the adjacent second fixing member.

[0023] In some embodiments, the photovoltaic fence further comprises a hand guard, and the hand guard is fixedly connected with the plurality of columns along the arrangement direction of the plurality of columns.

[0024] In some embodiments, the first fixing member and the second fixing member are fixed to one side of the column, and the hand guard is fixed to the other side of the column.

[0025] In some embodiments, the column comprises a plurality of fixed plates arranged in stacks;

[0026] The first fixing member is bolted on the plurality of fixed plates, and the second fixing member is bolted on the plurality of fixed plates.

[0027] This application fixes a first fastener at the first end of a column and a second fastener at the second end of the column. This allows the first end of the photovoltaic panel to be fixed using the first fastener, and the second end to be fixed using the second fastener, ultimately securing the photovoltaic panel. Since the first fastener has a first mounting groove, and the first end of the photovoltaic panel is embedded in the first mounting groove, forming a wiring space with the inner wall of the first fastener, the wires connected to the photovoltaic panel can be installed within this space. This simultaneously installs the photovoltaic panel and creates a wiring space for the wires, eliminating the need for further wire installation structures in the photovoltaic fence. Ultimately, this simplifies the structure of the photovoltaic fence and reduces its manufacturing cost. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 A front view of a photovoltaic guardrail according to an embodiment of this application is shown;

[0030] Figure 2 A left view of a photovoltaic guardrail according to an embodiment of this application is shown;

[0031] Figure 3 This application shows Figure 2 An enlarged schematic diagram of point A in the middle;

[0032] Figure 4 This application shows Figure 2 An enlarged schematic diagram of point B in the middle.

[0033] The components include: 10 columns, 20 photovoltaic panels, 30 first fixing components, 301 first mounting groove, 31 first bottom wall, 32 first top wall, 33 first side wall, 34 second side wall, 40 second fixing components, 401 second mounting groove, 41 second bottom wall, 42 third side wall, 43 fourth side wall, and 50 hand guards. Detailed Implementation

[0034] Clearly, the described embodiments are only a part of the embodiments of the present application, and are not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can be explicitly or implicitly included one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0036] In the present application, the word "exemplary" is used to mean "serving as an example, instance, or illustration." Any implementation described as "exemplary" in the present application is not necessarily to be construed as preferred or advantageous over other implementations. The following description is presented to enable any person skilled in the art to make and use the present application. In the following description, for the purpose of explanation, details are set forth. It is apparent to those skilled in the art that the present application can be practiced without using these specific details. In other instances, well-known structures and processes are not described in detail in order to avoid obscuring the description of the present application. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

[0037] The present application provides a photovoltaic guardrail, which is described in detail below.

[0038] First, refer to Figure 1 and Figure 2 , Figure 1 shows a front view of the photovoltaic guardrail in the present application, Figure 2A left view of the photovoltaic guardrail in the embodiments of the present application is shown, wherein the photovoltaic guardrail comprises a plurality of spaced-apart upright columns 10, at least one photovoltaic panel 20, at least one first fixing member 30, and at least one second fixing member 40.

[0039] Specifically, the upright column 10 can be fixed on a base building (for example, a balcony, a terrace, a dam) to facilitate the provision of stable mounting support for the photovoltaic panel 20, the first fixing member 30, and the second fixing member 40. In some embodiments of the present application, the upright column 10 can comprise a plurality of stacked fixing plates, which can include but are not limited to metal plates or non-metal plates with high strength. Since the plurality of fixing plates are stacked, the stability and bending resistance of the structure of the upright column 10 can be increased, and in some special scenarios (for example, a road guardrail), the number of stacked fixing plates of the upright column 10 can be increased according to the use scenario to further improve the strength of the upright column 10.

[0040] It can be understood that in some possible embodiments, the upright column 10 can also be a hollow or solid column, for example, a solid circular column or a hollow square column, etc.

[0041] The photovoltaic panel 20 is located between adjacent upright columns 10, and can receive light and generate electric energy. After the electric energy is output by the wires electrically connected to the photovoltaic panel 20, solar power generation can be achieved. Exemplarily, the photovoltaic panel 20 can be but is not limited to a silicon-based photovoltaic panel, a thin-film photovoltaic panel, or an organic photovoltaic panel, such as a single-crystal silicon photovoltaic panel, a polycrystalline silicon photovoltaic panel, a copper-indium-gallium-selenium (CIGS) photovoltaic panel, a perovskite photovoltaic panel, etc.

[0042] The first fixing member 30 is fixed to the first end of the upright column 10, and can fix the first end of the photovoltaic panel 20; the second fixing member 40 is fixed to the second end of the upright column 10, and can fix the second end of the photovoltaic panel 20. Therefore, the first fixing member 30 and the second fixing member 40 fixed on the upright column 10 achieve the fixed installation of the photovoltaic panel 20. Exemplarily, the first fixing member 30 and the second fixing member 40 can be fixed on the upright column 10 by means of bolt fixing, welding, clamping, etc.

[0043] In some embodiments of the present application, for example, for the embodiment in which the upright column 10 comprises a plurality of stacked fixing plates, the first fixing member 30 can be fixed on the plurality of fixing plates by means of bolts, and the second fixing member 40 can be fixed on the plurality of fixing plates by means of bolts. At this time, the bolts not only serve to fix the first fixing member 30 and the second fixing member 40, but also lock the plurality of stacked fixing plates, thereby ensuring the reliability of the upright column 10.

[0044] In some embodiments of this application, the number of first fixing members 30 and second fixing members 40 may be the same as the number of photovoltaic panels 20, that is, one first fixing member 30 fixes one first end of a photovoltaic panel 20, and one second fixing member 40 fixes one second end of a photovoltaic panel 20. In some embodiments of this application, the number of first fixing members 30 and second fixing members 40 may be one, that is, the first fixing member 30 fixes the first ends of all photovoltaic panels 20, and the second fixing member 40 fixes the second ends of all photovoltaic panels 20.

[0045] Understandably, the number of first fasteners 30 can also be one, and the number of second fasteners 40 is the same as that of photovoltaic panels 20, that is, the first fasteners 30 fix the first end of all photovoltaic panels 20, while one second fastener 40 fixes the second end of one photovoltaic panel 20; or, the number of second fasteners 40 can also be one, and the number of first fasteners 30 is the same as that of photovoltaic panels 20, that is, one first fastener 30 fixes the first end of one photovoltaic panel 20, while the second fasteners 40 fix the second ends of all photovoltaic panels 20.

[0046] It should be noted that, for the support column 10, one of the first end and the second end refers to the upper end of the support column 10, and the other refers to the lower end of the support column 10; correspondingly, for the photovoltaic panel 20, one of the first end and the second end refers to the upper end of the photovoltaic panel 20, and the other refers to the lower end of the photovoltaic panel 20. For example, the first end of the support column 10 can be the lower end of the support column 10, and the second end of the support column 10 can be the upper end of the support column 10; correspondingly, the first end of the photovoltaic panel 20 can be the lower end of the photovoltaic panel 20, and the second end of the photovoltaic panel 20 can be the upper end of the photovoltaic panel 20.

[0047] In the embodiments of this application, see Figure 3 , Figure 3 It shows Figure 2 An enlarged schematic diagram at point A shows that the first fixing member 30 has a first mounting groove 301. The first end of the photovoltaic panel 20 is embedded in the first mounting groove 301, and the first mounting groove 301 and the inner wall of the first fixing member 30 enclose a wiring space. Therefore, the wires connected to the photovoltaic panel 20 can be installed in the wiring space enclosed by the photovoltaic panel 20 and the inner wall of the first fixing member 30. This allows the wiring space for the installation wires to be constructed at the same time as the installation of the photovoltaic panel 20, so that the photovoltaic guardrail does not need to be further equipped with a wire installation structure. Ultimately, this helps to simplify the structure of the photovoltaic guardrail and reduce the manufacturing cost of the photovoltaic guardrail.

[0048] In some embodiments of the present application, continuing to refer to Figure 3 The first fixing member 30 has a first bottom wall 31, a first top wall 32, a first side wall 33, and a second side wall 34. The two sides of the first bottom wall 31 are connected with the first side wall 33 and the second side wall 34 respectively, and the first top wall 32 is connected with the first side wall 33. The width of the first top wall 32 is smaller than that of the first bottom wall 31. The first bottom wall 31, the first top wall 32, the first side wall 33, and the second side wall 34 enclose to define a first mounting groove 301. After the first end of the photovoltaic panel 20 is embedded in the first mounting groove 301, the photovoltaic panel 20, the first bottom wall 31, the first side wall 33, and the first top wall 32 enclose to define a wiring space.

[0049] It should be noted that, since the first top wall 32 is connected with the first side wall 33, and the width of the first top wall 32 is smaller than that of the first bottom wall 31, there is an opening between the first top wall 32 and the second side wall 34. The cross-sectional shape of the first fixing member 30 is approximately G-shaped. Therefore, the first bottom wall 31, the first top wall 32, the first side wall 33, and the second side wall 34 can enclose to define the first mounting groove 301, so as to fix the first end of the photovoltaic panel 20 in the first mounting groove 301 through the opening between the first top wall 32 and the second side wall 34. Meanwhile, after the first end of the photovoltaic panel 20 is embedded in the first mounting groove 301, the first end of the photovoltaic panel 20 will be in contact with the first top wall 32 due to the presence of the first top wall 32. Therefore, the photovoltaic panel 20, the first bottom wall 31, the first side wall 33, and the first top wall 32 can enclose to define the wiring space, so as to install the wires or circuit devices connected with the photovoltaic panel 20 in the wiring space.

[0050] It can be understood that, Figure 3 The first fixing member 30 has a first bottom wall 31, a first top wall 32, a first side wall 33, and a second side wall 34. The two sides of the first bottom wall 31 are connected with the first side wall 33 and the second side wall 34 respectively, and the first top wall 32 is connected with the first side wall 33. The width of the first top wall 32 is smaller than that of the first bottom wall 31. The first bottom wall 31, the first top wall 32, the first side wall 33, and the second side wall 34 enclose to define a first mounting groove 301. After the first end of the photovoltaic panel 20 is embedded in the first mounting groove 301, the photovoltaic panel 20, the first bottom wall 31, the first side wall 33, and the first top wall 32 enclose to define a wiring space.

[0051] In some embodiments of the present application, continuing to refer to Figure 3 The height of the first side wall 33 is greater than that of the second side wall 34, that is, the height of the second side wall 34 which is not connected with the first top wall 32 is lower. The top end of the second side wall 34 is lower than the first top wall 32. When fixing the first end of the photovoltaic panel 20, the first end of the photovoltaic panel 20 can be more easily fixed in the first mounting groove of the first fixing member 30, thereby reducing the installation difficulty of the photovoltaic panel 20.

[0052] In some embodiments of this application, see Figure 4 , Figure 4 It shows Figure 2 An enlarged schematic diagram at point B shows that the second fixing member 40 has a second mounting groove 401, and the second end of the photovoltaic panel 20 is embedded in the second mounting groove 401. That is to say, both the first end and the second end of the photovoltaic panel 20 are fixed in the corresponding mounting grooves. Installing the photovoltaic panel 20 by fixing it in the mounting grooves can improve the ease of installation of the photovoltaic panel 20.

[0053] In some embodiments of this application, see further reference. Figure 4 The second fixing member 40 has a second bottom wall 41, a third side wall 42 and a fourth side wall 43. The two sides of the second bottom wall 41 are connected to the third side wall 42 and the third side wall 43 respectively. There is an opening between the third side wall 42 and the fourth side wall 43. The cross-sectional shape of the second fixing member 40 is approximately an inverted U-shape. Therefore, the second bottom wall 41, the third side wall 42 and the fourth side wall 43 can surround and define the second mounting groove 401 so as to fix the second end of the photovoltaic panel 20 in the first mounting groove 301 through the opening between the third side wall 42 and the fourth side wall 43.

[0054] Understandably, the method by which the second fastener 40 secures the second end of the photovoltaic panel 20 is not limited to this. For example, the second fastener 40 can also secure the second end of the photovoltaic panel 20 by means of bolts; or, for example, the second fastener 40 can also secure the second end of the photovoltaic panel 20 by means of snap-fit. Meanwhile, when there is a gap between the second end of the photovoltaic panel 20 and the second fastener 40, it can be sealed by a sealing structure (such as a sealing strip) to prevent dust, rainwater, etc., from entering the wiring space.

[0055] In some embodiments of this application, see Figure 1 as well as Figure 2 In this design, a first fixing member 30 is fixed to the first end of each column 10, and the first fixing member 30 also fixes the first end of each photovoltaic panel 20; each second fixing member 40 is fixed to the second end of a column 10, and the second fixing member 40 also fixes the second ends of photovoltaic panels 20 on adjacent sides. That is, this application can use the same first fixing member 30 to fix the first ends of all photovoltaic panels 20, and use second fixing members 40 to fix the photovoltaic panels 20 adjacent to the column 10 they are on. Since the photovoltaic panels 20 are located between adjacent columns 10, for the same photovoltaic panel 20, the second end of the same photovoltaic panel 20 is fixed by two second fixing members 40. Therefore, the stability of the photovoltaic panel 20 installation can be improved without increasing the number of second fixing members 40.

[0056] In some embodiments of the present application, continuing to refer to Figure 1 and Figure 2 In the above embodiment, the first end of each photovoltaic panel 20 is embedded in the first mounting slot 301 of the same first fixing member 30, and the second end of each photovoltaic panel 20 is partially embedded in the second mounting slot 401 of the adjacent second fixing member 40. In combination with the above embodiment of fixing the second end of the photovoltaic panel 20 on two adjacent sides by each second fixing member 40, it can be seen that the first fixing member 30 covers the first end of each photovoltaic panel 20, and the second fixing member 40 only fixes the edge of the photovoltaic panel 20 close to the column 10. On the one hand, the first fixing member 30 and each photovoltaic panel 20 can form a wiring space connecting each photovoltaic panel 20, so as to ensure the sealing of the wiring space. On the other hand, it can also avoid the second fixing member 40 from blocking too much light area of the photovoltaic panel 20, thereby facilitating to improve the power generation efficiency of the photovoltaic panel 20.

[0057] In some embodiments of the present application, referring to Figure 2 In the above embodiment, the photovoltaic guardrail further comprises a handrail 50, which is fixedly connected with the plurality of columns 10 along the arrangement direction of the plurality of columns 10, that is, the handrail 50 is fixed across the plurality of photovoltaic panels 20. On the one hand, the handrail 50 can provide support and protection for personnel to ensure safety, and on the other hand, the handrail 50 can also protect the photovoltaic panel 20 from being damaged by external impact.

[0058] In some embodiments of the present application, referring to Figure 2 In the above embodiment, the first fixing member 30 and the second fixing member 40 are fixed on one side of the column 10, and the handrail 50 is fixed on the other side of the column 10. Since the photovoltaic panel 20 is fixed by the first fixing member 30 and the second fixing member 40, the handrail 50 and the photovoltaic panel 20 are respectively located on the two sides of the column 10. If the light-receiving surface of the photovoltaic panel 20 is arranged away from the column 10, the light-receiving surface of the photovoltaic panel 20 will not be blocked by any object, thereby improving the power generation efficiency of the photovoltaic panel 20.

[0059] In the above embodiment, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be seen from the detailed description of other embodiments above, which will not be repeated here.

[0060] The above has described the basic concept, and it is obvious that the above detailed disclosure is only taken as an example and does not constitute a limitation on the present application. Although it is not explicitly stated here, those skilled in the art can make various modifications, improvements and corrections to the present application. Such modifications, improvements and corrections are suggested in the present application, so such modifications, improvements and corrections still belong to the spirit and scope of the exemplary embodiments of the present application.

[0061] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0062] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments of the utility model, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the present application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0063] The above provides a detailed description of a photovoltaic guardrail provided in the embodiments of this application. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A photovoltaic guardrail, characterized by, The photovoltaic fence comprises: a plurality of spaced-apart upright columns; at least one photovoltaic panel located between adjacent upright columns; at least one first fixing member fixed to a first end of the upright column, the first fixing member fixing a first end of the photovoltaic panel; at least one second fixing member fixed to a second end of the upright column, the second fixing member fixing a second end of the photovoltaic panel; wherein the first fixing member has a first mounting slot, the first end of the photovoltaic panel being embedded in the first mounting slot and enclosed with an inner wall of the first fixing member to define a wiring space.

2. The photovoltaic guardrail of claim 1, wherein, The first fixing member has a first bottom wall, a first top wall, a first side wall, and a second side wall; the first top wall is connected to the first side wall; wherein the width of the first top wall is smaller than the first bottom wall, the first bottom wall, the first top wall, the first side wall, and the second side wall enclosing the first mounting slot; after the first end of the photovoltaic panel is embedded in the first mounting slot, the photovoltaic panel, the first bottom wall, the first side wall, and the first top wall enclose the wiring space.

3. The photovoltaic guardrail of claim 2, wherein, The height of the first side wall is greater than the height of the second side wall.

4. The photovoltaic guardrail of claim 1, wherein, The second fixing member has a second mounting slot; The second fixing member has a second mounting slot, the second end of the photovoltaic panel being embedded in the second mounting slot.

5. The photovoltaic guardrail of claim 4, wherein, The second fixing member has a second bottom wall, a third side wall, and a fourth side wall; the second bottom wall is connected to the third side wall and the fourth side wall, and the second bottom wall, the third side wall, and the fourth side wall enclose the second mounting slot.

6. The photovoltaic guardrail of claim 4, wherein, The first fixing member is fixed to the first end of each upright column, and the first fixing member fixes the first end of each photovoltaic panel; each second fixing member is fixed to the second end of an upright column, and each second fixing member fixes the second end of the photovoltaic panels on both sides.

7. The photovoltaic guardrail of claim 4, wherein, The first end of each photovoltaic panel is embedded in the first mounting slot of the same first fixing member; The second end of each photovoltaic panel is partially embedded in the second mounting slot of the adjacent second fixing member.

8. The photovoltaic guardrail of claim 1, wherein, The photovoltaic fence further comprises a hand guard, which is fixedly connected to the plurality of upright columns along the arrangement direction of the plurality of upright columns.

9. The photovoltaic guardrail of claim 8, wherein, The first fixing member and the second fixing member are fixed to one side of the upright column, and the hand guard is fixed to the other side of the upright column.

10. The photovoltaic guardrail according to any one of claims 1 to 9, wherein, The upright column comprises a plurality of stacked fixing plates; the first fixing member is bolted to the plurality of fixing plates, and the second fixing member is bolted to the plurality of fixing plates.

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