Fixing device and photovoltaic support

Abstract

The utility model discloses a fixing device and a photovoltaic support, and the fixing device comprises a lower pressing member which comprises a bottom plate and two side plates vertically extending from the two sides of the bottom plate, one side of each side plate far away from the bottom plate is provided with a notch part, and the notch part is used for surrounding at least part of a main shaft; the fastening piece is used for fixedly connecting the pressing piece and the purline; and the base plate is arranged on the side, away from the bottom plate, of the downward pressing piece and comprises a main plate and two clamping plates which are perpendicularly connected to the main plate and arranged at intervals, the main plate is used for abutting against the main shaft, a clamping groove is formed by the two clamping plates, the two clamping plates are clamped to the downward pressing piece, and the clamping plates are attached to the side plates. According to the fixing device and the photovoltaic support, the contact area between the main shaft and the pressing piece is increased, and local buckling of the main shaft caused by overlarge local stress on the main shaft is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic support technology, and in particular to a fixing device and a photovoltaic support. Background Technology

[0002] Photovoltaic tracking brackets typically connect and fix the purlins to the main shaft using bolts and a pressure plate. However, the existing pressure plate has a limited contact area with the main shaft, resulting in excessive local stress on the main shaft, which can easily lead to local buckling of the main shaft.

[0003] Therefore, it is necessary to provide a new fixing device and photovoltaic bracket to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a fixing device and a photovoltaic bracket that can increase the contact area between the main shaft and the lower pressure component and reduce the local stress on the main shaft.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A fixing device adapted to fix a purlin to a main shaft, the fixing device comprising:

[0007] The pressing member includes a base plate and two side plates extending vertically from both sides of the base plate. The two side plates have a notch on the side away from the base plate, and the notch is used to surround at least part of the main shaft.

[0008] Fasteners are used to securely connect the lower pressure member and the purlin;

[0009] A pad, disposed on the side of the pressing member away from the base plate, includes a main board and two snap-fit ​​plates vertically connected to the main board and spaced apart. The main board is used to abut against the spindle. The two snap-fit ​​plates form snap-fit ​​grooves and snap-fit ​​the two snap-fit ​​plates to the pressing member. The snap-fit ​​plates are attached to the side plate.

[0010] As a further improvement of the present invention, the two snap-fit ​​plates extend vertically from both sides of the main board, and the two snap-fit ​​plates are at least partially attached to the two side plates.

[0011] As a further improvement of this utility model, the two snap-fit ​​plates extend downward from the lower surface of the main board, and the two snap-fit ​​plates are at least partially attached to the two side plates. The length of the main board in the axial direction of the spindle is greater than the distance between the two snap-fit ​​plates.

[0012] As a further improvement of the present invention, the side plate is also provided with a recessed groove, which extends from the recessed portion toward the bottom plate, and the main plate is at least partially located in the recessed groove, the depth of the recessed groove being equal to the thickness of the main plate.

[0013] To achieve the above objectives, the present invention also adopts the following technical solution:

[0014] A photovoltaic support includes a purlin, a main shaft, and a fixing device as described in any of the preceding claims, the fixing device being fixedly connected to the purlin and the main shaft.

[0015] As a further improvement of the present invention, the photovoltaic bracket further includes a first reinforcing member, which is disposed between the purlin and the main shaft. The first reinforcing member covers the outer surface of the purlin and at least partially abuts against the main shaft. The fasteners are sequentially inserted through the purlin, the first reinforcing member and the base plate and fixed thereon.

[0016] As a further improvement of the present invention, the photovoltaic bracket further includes a second reinforcing member, which is disposed inside the purlin and adapted to the inner surface of the purlin. The fastener is sequentially inserted through the second reinforcing member, the purlin and the base plate and fixed thereon.

[0017] As a further improvement of the present invention, the photovoltaic bracket further includes a first reinforcing member and a second reinforcing member. The first reinforcing member covers the outer surface of the purlin, and the second reinforcing member is disposed inside the purlin. The fastener passes through the second reinforcing member, the purlin, the first reinforcing member and the base plate in sequence and is fixed thereto.

[0018] As a further improvement of the present invention, the photovoltaic bracket further includes a third reinforcing member, which is supported and connected between the two side walls of the purlin, and the third reinforcing member is located at the end of the purlin away from the main shaft.

[0019] As a further improvement of the present invention, the photovoltaic bracket also includes a diagonal brace, one end of which is at least partially attached to the outer side of the two side walls of the purlin, and the other end of which is at least partially attached to the opposite side of the two side plates.

[0020] Compared to existing technologies, the advantages of this fixing device and photovoltaic bracket are as follows: By adding a pad between the main shaft and the lower pressure member, the side plate of the lower pressure member, which originally abutted perpendicularly to the main shaft, now has its upper surface in contact with the main shaft, and the side plate of the lower pressure member abutting perpendicularly to the lower surface of the pad. This increases the contact area between the main shaft and the lower pressure member, effectively reducing local buckling of the main shaft caused by excessive local stress. The pad includes a main plate and a snap-fit ​​plate. The main plate is used to abut against the main shaft, and the snap-fit ​​plate is used to adapt and connect with the side plate of the lower pressure member, resulting in high connection stability. This fixing device and photovoltaic bracket have a simple and high-strength structure, improving structural reliability at a lower cost. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a photovoltaic bracket according to a specific embodiment of the present utility model;

[0022] Figure 2 for Figure 1 Front view structural diagram;

[0023] Figure 3 This is a partial structural schematic diagram of a photovoltaic bracket according to a specific embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the assembly of the pressing component and the pad according to a specific embodiment of the present invention;

[0025] Figure 5 This is a left-side view of the assembly of the pressure member and the pad plate according to a specific embodiment of the present utility model.

[0026] Figure 6 This is an exploded view of the pressing component and the pad according to a specific embodiment of the present invention;

[0027] Figure 7 This is a partial structural schematic diagram of a photovoltaic bracket according to a specific embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the assembly of the pressing component and the pad according to a specific embodiment of the present invention;

[0029] Figure 9 This is a left-side view of the assembly of the pressure member and the pad plate according to a specific embodiment of the present utility model.

[0030] Figure 10 This is an exploded view of the pressing component and the pad according to a specific embodiment of the present invention;

[0031] Figure 11 This is a partially exploded structural diagram of a photovoltaic bracket according to a specific embodiment of the present invention. Detailed Implementation

[0032] The exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. If several embodiments exist, features in these embodiments may be combined with each other without conflict. When the description refers to the drawings, unless otherwise stated, the same numbers in different drawings represent the same or similar elements. The descriptions in the following exemplary embodiments do not represent all embodiments consistent with the present invention; rather, they are merely examples of apparatuses, products, and / or methods consistent with some aspects of the present invention as set forth in the claims.

[0033] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of protection of this invention. The singular forms “a,” “the,” or “the” used in the specification and claims of this invention are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0034] It should be understood that the terms "first," "second," and similar words used in the specification and claims of this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish the features. Similarly, the terms "an" or "a" do not indicate a quantity limitation, but rather indicate the presence of at least one. Unless otherwise stated, the terms "front," "back," "left," "right," "upper," "lower," and similar words appearing in this utility model are for ease of explanation only and are not limited to a specific location or spatial orientation. The terms "comprising" or "including" are an open-ended expression, meaning that the element preceding "comprising" or "including" covers the element following "comprising" or "including" and its equivalents, which does not exclude that the element preceding "comprising" or "including" may also include other elements. If "several" appears in this utility model, it means two or more.

[0035] Please see Figures 1 to 11 As shown in the figure, this embodiment discloses a photovoltaic support, including a purlin 100, a main shaft 200 and a fixing device, wherein the fixing device fixes the purlin 100 and the main shaft 200.

[0036] Please see Figures 1 to 3 , Figure 7 As shown, the fixing device in this embodiment is suitable for fixing the purlin 100 to the spindle 200. The fixing device includes a pressing member 1, a fastener 21, and a pad 3. The pressing member 1 is disposed on the side of the spindle 200 away from the purlin 100. The fastener 21 fixes the pressing member 1 to the purlin 100 so that the pressing member 1 and the purlin 100 clamp the spindle 200. The pad 3 is disposed between the pressing member 1 and the spindle 200.

[0037] Please see Figure 2 , Figure 6 and Figure 10As shown, the pressing member 1 includes a base plate 12 and two side plates 11 extending vertically from both sides of the base plate 12. The two side plates 11 are arranged parallel to each other along the axial direction of the main shaft 200, and the side plates 11 are vertical and abut against the main shaft 200. The base plate 12 is located on the side of the side plates 11 away from the main shaft 200 and connects the ends of the two side plates 11 away from the main shaft 200. The side of the two side plates 11 that abuts against the main shaft 200, i.e., the side away from the base plate 12, is provided with a recess 111. The recess 111 is used to surround at least a portion of the main shaft 200, that is, the recess 111 is adapted to at least a portion of the lower contour of the main shaft 200 to limit and abut against the main shaft 200. Specifically, the recess 111 is recessed downward from the middle of the upper edge of the side plate 11.

[0038] Please see Figures 3 to 10 As shown, the pad 3 is disposed on the side of the pressing member 1 away from the base plate 12. The pad 3 includes a main plate 31 and two locking plates 32 vertically connected to the main plate 31 and spaced apart. The main plate 31 is used to abut against the spindle 200 upwards, and the side plate 11 abuts against the main plate 31 upwards. The two locking plates 32 form locking grooves and are locked onto the pressing member 1, and the locking plates 32 are in contact with the side plate 11. With this configuration, originally only the upper edge of the side plate 11 was in contact with the spindle 200. In this embodiment, the pressing member 1 contacts the spindle 200 through the pad 3, and its contact area is increased to the upper surface area of ​​the pad 3, which can reduce the local stress on the spindle 200.

[0039] Please see Figures 3 to 6 As shown, in one embodiment, two snap-fit ​​plates 32 extend vertically downwards on both sides of the main plate 31 relative to the axial direction of the main shaft 200. The snap-fit ​​plates 32 are bent and connected to the main plate 31, and the two snap-fit ​​plates 32 are at least partially attached to the two side plates 11. That is, the pad 3 is made entirely of a single plate, with a U-shaped structure. The pad 3 can be made from a single steel plate through simple bending, resulting in low processing costs and high structural strength. In one embodiment of this implementation, the two snap-fit ​​plates 32 are at least partially attached to the opposite sides of the two side plates 11. In another embodiment of this implementation, the two snap-fit ​​plates 32 are at least partially attached to the adjacent sides of the two side plates 11.

[0040] Please see Figures 7 to 10As shown, in another embodiment, the two snap-fit ​​plates 32 extend downward from the lower surface of the main plate 31, and the two snap-fit ​​plates 32 at least partially adhere to the two side plates 11. The length of the main plate 31 in the axial direction of the spindle 200 is greater than the distance between the two snap-fit ​​plates 32, so that the main plate 31 can be stably mounted on the two side plates 11. In this case, the main plate 31 is relatively longer, meaning it has a larger contact area with the spindle 200, which can better solve the problem of localized buckling of the spindle 200 caused by excessive localized stress. If the pad 3 is made of steel plate, the cost is high. It can be made of extruded aluminum alloy, reducing costs, and the formed pad 3 has better overall integrity and higher reliability. In one embodiment of this implementation, the two snap-fit ​​plates 32 at least partially adhere to the opposite sides of the two side plates 11. In another embodiment of this implementation, the two snap-fit ​​plates 32 at least partially adhere to the adjacent sides of the two side plates 11.

[0041] Please see Figure 4 , Figure 6 , Figure 8 and Figure 10 As shown, the side plate 11 is also provided with a recess 112, which extends recessed from the notch 111 toward the base plate 12 for engaging with the pad 3. Furthermore, the width of the pad 3 is no greater than the width of the recess 112, and the main plate 31 is at least partially located within the recess 112, the depth of the recess 112 being equal to the thickness of the main plate 31. With this configuration, the pad 3 can be locked and engaged with the side plate 11, and the contour formed by the main plate 31 and the notch 111 is adapted to the spindle 200, thereby increasing the overall structural stability.

[0042] When the fastener 21 securely connects the purlin 100 and the base plate 12, the fastener 21 at least partially abuts against both sides of the spindle 200, so that the fastener 21, the pressing member 1, and the purlin 100 cooperate to surround the outer periphery of the spindle 200. The pressing member 1 at least partially conforms to the lower surface of the spindle 200, the fastener 21 at least partially conforms to both side surfaces of the spindle 200, and the purlin 100 at least partially conforms to the upper surface of the spindle 200. In this embodiment, the fastener 21 is a bolt and nut assembly, with the bolt passing through the purlin 100 and the base plate 12, and the nut screwed in from the tail of the bolt and tightened on one side of the base plate 12.

[0043] Please see Figure 1 , Figure 2 and Figure 11As shown, the photovoltaic support also includes a first reinforcing member 22, which is disposed between the purlin 100 and the main shaft 200. The first reinforcing member 22 covers the outer surface of the purlin 100 and at least partially abuts against the main shaft 200. Fasteners 21 are sequentially inserted through the purlin 100, the first reinforcing member 22, and the base plate 12 and fixed thereto. The first reinforcing member 22 prevents direct contact between the purlin 100 and the main shaft 200, reducing frictional damage between them and increasing the strength of the purlin 100, thereby improving the stability of the structural connection.

[0044] Please see Figure 11 As shown, the photovoltaic support also includes a second reinforcing member 23, which is disposed within the purlin 100 and adapted to the inner surface of the purlin 100. Fasteners 21 are sequentially inserted through the second reinforcing member 23, the purlin 100, and the base plate 12 and fixed in place. The inclusion of the second reinforcing member 23 increases the strength of the purlin 100 and prevents the bolt heads of the fasteners 21 from directly contacting the purlin 100, thus reducing damage to the purlin 100 caused by the fasteners 21.

[0045] In this embodiment, the photovoltaic support includes both a first reinforcing member 22 and a second reinforcing member 23. Fasteners 21 are sequentially inserted through and fixed to the second reinforcing member 23, the purlin 100, the first reinforcing member 22, and the base plate 12. Further, the first reinforcing member 22 includes a first horizontal plate 221 and two first vertical plates 222, which abut against the bottom wall and two side walls of the purlin 100 from the outside. The second reinforcing member 23 includes a second horizontal plate 231 and two second vertical plates 232, which abut against the bottom wall and two side walls of the purlin 100 from the inside. The inclusion of the first reinforcing member 22 and the second reinforcing member 23 effectively increases the thickness at the connection between the purlin 100 and the main shaft 200, thereby strengthening the structural connection and improving the stability of the connection structure.

[0046] Furthermore, the first vertical plate 222 and the second vertical plate 232 are fixedly connected by a bolt and nut assembly to further improve the structural strength.

[0047] In some embodiments, the head of the bolt of the fastener 21 has a rectangular cross section, and the radial sides of the head abut against the two second vertical plates 232 of the second reinforcing member 23, so as to improve the connection accuracy between the components and effectively prevent the bolt from loosening, thereby improving the stability of the connection structure.

[0048] Please see Figure 1 , Figure 3 , Figure 7 and Figure 11As shown, the photovoltaic support also includes a third reinforcing member 24. The third reinforcing member 24 is supported and connected between the two side walls of the purlin 100, and is located at the end of the purlin 100 away from the main shaft 200. The third reinforcing member 24 includes a third horizontal plate 241 and two third vertical plates 242. The two third vertical plates 242 are respectively attached to the inner sides of the two side walls of the purlin 100. The third horizontal plate 241 is located on the side of the third vertical plate 242 away from the bottom wall of the purlin 100. The third vertical plates 242 are fixedly connected to the side walls of the purlin 100. The third reinforcing member 24 is provided to increase the strength of the purlin 100 and prevent the two side walls of the purlin 100 from being compressed and deformed inward, which could lead to instability of the photovoltaic modules on the purlin 100.

[0049] Please see Figures 1 to 3 As shown, the photovoltaic support in this embodiment also includes diagonal braces 4, which are fixedly connected to the purlin 100 and the lower pressure member 1. Specifically, two diagonal braces 4 are symmetrically arranged on both sides of the main shaft 200. One end of the diagonal brace 4 is at least partially attached to the outer side of the two side walls of the purlin 100 and connected to the side wall of the purlin 100 through a bolt and nut assembly. The other end of the diagonal brace 4 is at least partially attached to the two side plates 11 of the lower pressure member 1 and connected to the side plates 11 through a bolt and nut assembly. This arrangement improves the support stability of the purlin 100 on the main shaft 200.

[0050] Furthermore, if the other end of the diagonal brace 4 is at least partially attached to one side of the two side plates 11 that are opposite to each other, then the distance between the two side plates 11 that are opposite to each other is equal to the distance between the outer sides of the two side walls of the purlin 100.

[0051] In summary, compared with the prior art, the fixing device and photovoltaic bracket of this utility model have the following advantages: By adding a pad 3 between the main shaft 200 and the lower pressure member 1, the side plate 11 of the lower pressure member 1, which originally abutted perpendicularly to the main shaft 200, now has its upper surface in contact with the main shaft 200 and its side plate 11 in perpendicular contact with the lower surface of the pad 3. This increases the contact area between the main shaft 200 and the lower pressure member 1, effectively reducing the local buckling of the main shaft 200 caused by excessive local stress. The pad 3 includes a main plate 31 and a snap-fit ​​plate 32. The main plate 31 is used to fit and abut against the main shaft 200, and the snap-fit ​​plate 32 is used to adapt and connect with the side plate 11 of the lower pressure member 1, resulting in higher connection stability. This fixing device and photovoltaic bracket have a simple and high-strength structure, improving structural reliability at a lower cost.

[0052] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. The understanding of this specification should be based on those skilled in the art. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present utility model. All technical solutions and improvements that do not depart from the spirit and scope of the present utility model should be covered within the scope of the claims of the present utility model.

Claims

1. A fixing device suitable for fixing a purlin (100) to a main shaft (200), characterized in that, The fixing device includes: The pressing member (1) includes a base plate (12) and two side plates (11) extending vertically from both sides of the base plate (12). The two side plates (11) have a notch (111) on the side away from the base plate (12), and the notch (111) is used to surround at least part of the main shaft (200). Fastener (21) for securing the lower pressure member (1) to the purlin (100); A pad (3) is disposed on the side of the pressing member (1) away from the base plate (12), including a main board (31) and two snap-fit ​​plates (32) vertically connected to the main board (31) and spaced apart. The main board (31) is used to abut against the spindle (200). The two snap-fit ​​plates (32) form snap-fit ​​grooves and snap-fit ​​the two snap-fit ​​plates (32) to the pressing member (1). The snap-fit ​​plates (32) are attached to the side plate (11).

2. The fixing device according to claim 1, characterized in that: The two snap-fit ​​plates (32) extend vertically from both sides of the main board (31), and the two snap-fit ​​plates (32) are at least partially attached to the two side plates (11).

3. The fixing device according to claim 1, characterized in that: The two snap-fit ​​plates (32) extend downward from the lower surface of the main board (31), and the two snap-fit ​​plates (32) are at least partially attached to the two side plates (11). The length of the main board (31) in the axial direction of the spindle (200) is greater than the distance between the two snap-fit ​​plates (32).

4. The fixing device according to claim 1, characterized in that: The side plate (11) is also provided with a recess (112) extending from the recess (111) toward the bottom plate (12), and the main plate (31) is at least partially located in the recess (112), the depth of the recess (112) being equal to the thickness of the main plate (31).

5. A photovoltaic support structure, characterized in that: It includes a purlin (100), a main shaft (200), and a fixing device as described in any one of claims 1 to 4, the fixing device being fixedly connected to the purlin (100) and the main shaft (200).

6. The photovoltaic support according to claim 5, characterized in that: The photovoltaic bracket also includes a first reinforcing member (22), which is disposed between the purlin (100) and the main shaft (200). The first reinforcing member (22) covers the outer surface of the purlin (100) and at least partially abuts against the main shaft (200). The fastener (21) passes through the purlin (100), the first reinforcing member (22) and the base plate (12) in sequence and is fixed.

7. The photovoltaic support according to claim 5, characterized in that: The photovoltaic bracket also includes a second reinforcing member (23), which is disposed inside the purlin (100) and adapted to the inner surface of the purlin (100). The fastener (21) passes through the second reinforcing member (23), the purlin (100) and the base plate (12) in sequence and is fixed.

8. The photovoltaic support according to claim 5, characterized in that: The photovoltaic bracket also includes a first reinforcing member (22) and a second reinforcing member (23). The first reinforcing member (22) covers the outer surface of the purlin (100), and the second reinforcing member (23) is disposed inside the purlin (100). The fastener (21) passes through the second reinforcing member (23), the purlin (100), the first reinforcing member (22), and the base plate (12) in sequence and is fixed.

9. The photovoltaic support according to claim 8, characterized in that: The photovoltaic bracket also includes a third reinforcing member (24), which is supported and connected between the two side walls of the purlin (100) and is located at the end of the purlin (100) away from the main shaft (200).

10. The photovoltaic support according to claim 5, characterized in that: The photovoltaic bracket also includes a diagonal brace (4), one end of which is at least partially attached to the outer side of the two side walls of the purlin (100), and the other end of which is at least partially attached to the opposite side of the two side plates (11).

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