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; the base plate is arranged on the side, away from the bottom plate, of the pressing piece and used for abutting against the main shaft; the downward pressing piece further comprises a clamping part, the clamping part is arranged on the notch part, and the base plate is fixed to the downward pressing piece through the clamping part and covers the tops of the two 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] The utility model relates to photovoltaic support technical field especially a kind of fixing device and photovoltaic support. BACKGROUND

[0002] Photovoltaic tracking support is usually connected and fixed by bolt and lower pressing plate to connect purlin with main shaft, the contact area between existing lower pressing plate and main shaft is limited, and the local stress of main shaft is too large, which can easily lead to local buckling of main shaft.

[0003] Therefore, it is necessary to provide a new fixing device and photovoltaic support to solve the above problems. INVENTION CONTENTS

[0004] The utility model discloses a kind of fixing device and photovoltaic support, which can increase the contact area between main shaft and lower pressing piece, and reduce the local stress of main shaft.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A fixing device is suitable for fixing purlin on main shaft, and the fixing device comprises:

[0007] Lower pressing piece includes bottom plate and two side plates vertically extended from both sides of the bottom plate, the side of two side plates away from the bottom plate is provided with notched part, and the notched part is used to surround at least part of main shaft;

[0008] Fastener is used to fixedly connect the lower pressing piece with the purlin;

[0009] Backing plate is arranged on the side of the lower pressing piece away from the bottom plate, and the backing plate is used to abut against the main shaft;

[0010] The lower pressing piece further comprises clamping part, the clamping part is arranged on the notched part, the backing plate is fixed to the lower pressing piece through the clamping part, and covers the top of the two side plates.

[0011] As a further improved technical scheme of the utility model, the backing plate is provided with clamping hole, and the backing plate is fixed to the lower pressing piece through the clamping hole and the clamping part.

[0012] As a further improved technical scheme of the utility model, two clamping parts extend away from each other from the notched part of two side plates, and the thickness of the clamping part is not greater than the thickness of the backing plate.

[0013] As a further improved technical scheme of the utility model, the clamping part at least partially abuts against the main shaft.

[0014] As a further improved technical scheme of the utility model, the side plate is further provided with a sink groove, the sink groove extends from the notched portion towards the bottom plate, the backing plate is at least partially located in the sink groove, and the depth of the sink groove is equal to the thickness of the backing plate.

[0015] To achieve the above object, the utility model further adopts the following technical scheme.

[0016] A photovoltaic support, comprising a purlin, a main shaft and the fixing device according to any one of the preceding items, the fixing device being fixedly connected with the purlin and the main shaft.

[0017] As a further improved technical scheme of the utility model, the photovoltaic support further comprises a first reinforcing member, the first reinforcing member is arranged between the purlin and the main shaft, the first reinforcing member is wrapped on the outer surface of the purlin and at least partially abuts against the main shaft, and the fastener is sequentially arranged through the purlin, the first reinforcing member and the bottom plate and is fixed.

[0018] As a further improved technical scheme of the utility model, the photovoltaic support further comprises a second reinforcing member, the second reinforcing member is arranged in the purlin and is matched with the inner surface of the purlin, and the fastener is sequentially arranged through the second reinforcing member, the purlin, the first reinforcing member and the bottom plate and is fixed.

[0019] As a further improved technical scheme of the utility model, the first reinforcing member comprises a first horizontal plate and two first vertical plates, the first horizontal plate and the two first vertical plates abut against the bottom wall and the two side walls of the purlin from the outside;

[0020] The second reinforcing member comprises a second horizontal plate and two second vertical plates, the second horizontal plate and the two second vertical plates abut against the bottom wall and the two side walls of the purlin from the inside;

[0021] The fastener is sequentially arranged through the second horizontal plate, the bottom wall of the purlin, the first horizontal plate and the bottom plate and is fixed, and the first vertical plate, the side wall of the purlin and the second vertical plate are fixedly connected.

[0022] As a further improved technical scheme of the utility model, the photovoltaic support further comprises a third reinforcing member, the third reinforcing member is supported and connected between the two side walls of the purlin, and the third reinforcing member is located at one end of the purlin away from the main shaft.

[0023] Compared with the prior art, the fixing device and the photovoltaic support have the beneficial effects that: the gusset plate is arranged between the main shaft and the lower pressing piece, the side plate of the lower pressing piece is perpendicular to the main shaft, after the gusset plate is arranged, the upper surface of the gusset plate is attached to the main shaft, and the side plate of the lower pressing piece is perpendicular to the lower surface of the gusset plate, so that the contact area between the main shaft and the lower pressing piece is increased, and the local buckling of the main shaft caused by excessive local stress of the main shaft is effectively reduced; the lower pressing piece is provided with the clamping part, and the gusset plate is fixedly connected to the lower pressing piece through the clamping part, so that the connection stability of the two is high, and the strength of the lower pressing piece is further improved. The fixing device and the photovoltaic support have simple structure and high strength, and the structural reliability is improved at low cost. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a three-dimensional structure schematic view of the photovoltaic support of a specific embodiment of the utility model;

[0025] Figure 2 It is a front view structure schematic view of Figure 1 ;

[0026] Figure 3 It is a partial structure schematic view of the photovoltaic support of a specific embodiment of the utility model;

[0027] Figure 4 It is an assembly schematic view of the lower pressing piece and the gusset plate of a specific embodiment of the utility model;

[0028] Figure 5 It is a front view structure schematic view of Figure 4 ;

[0029] Figure 6 It is an exploded view of the lower pressing piece and the gusset plate of a specific embodiment of the utility model;

[0030] Figure 7 It is a partial exploded structure schematic view of the photovoltaic support of a specific embodiment of the utility model. DETAILED DESCRIPTION

[0031] The following will be described in detail with reference to the drawings. If there are several embodiments, the features in these embodiments can be combined with each other in the case of no conflict. When the description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise specified. The description in the following exemplary embodiments does not represent all the embodiments consistent with the utility model; on the contrary, they are only examples of devices, products and / or methods consistent with the claims of the utility model and some aspects of the utility model.

[0032] The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present application. As used in the specification and claims of the present application, the articles "a", "the", and "said" are intended to mean there is "at least one", unless otherwise indicated in the context by clear language that it is meant otherwise.

[0033] It should be understood that the use of terms such as "first", "second", and similar terms in the description and claims of the present application are not intended to denote any order, quantity, or importance, but are merely used to distinguish one feature from another. Similarly, the use of terms such as "one" or "an" does not denote a quantity limitation, but rather indicates that at least one exists. Unless otherwise indicated, the terms "front", "back", "left", "right", "up", "down", and similar terms in the present application are used for convenience and are not intended to be limiting as to a particular position or spatial orientation. The terms "include" or "comprise" and similar terms are open-ended terms that are intended to mean that the elements listed after the terms are present in the composition, method, or apparatus, but that other elements are not excluded and can be present. If "several" is used in the present application, it means two or more.

[0034] Referring to Figures 1 to 7 The embodiment discloses a photovoltaic support, which comprises a purlin 100, a main shaft 200 and a fixing device.

[0035] Referring to Figures 1 to 3 The fixing device of the embodiment is suitable for fixing the purlin 100 on the main shaft 200, and the fixing device comprises a pressing piece 1, a fastener 21 and a backing plate 3. The pressing piece 1 is arranged on the side of the main shaft 200 away from the purlin 100, the fastener 21 is fixedly connected between the pressing piece 1 and the purlin 100, so that the pressing piece 1 and the purlin 100 clamp the main shaft 200. The backing plate 3 is arranged between the pressing piece 1 and the main shaft 200.

[0036] Referring to Figure 2 and Figure 6 The pressing piece 1 comprises a bottom plate 12 and two side plates 11 extending perpendicularly from both sides of the bottom plate 12. The two side plates 11 are arranged in parallel along the axial direction of the main shaft 200, and the side plates 11 are perpendicular to and abut upwardly against the main shaft 200. The bottom plate 12 is located on the side of the side plates 11 away from the main shaft 200 and is connected to the ends of the two side plates 11 away from the main shaft 200. The side of the side plate 11 abutting against the main shaft 200, i.e. the side of the side plate 11 away from the bottom plate 12, is provided with a notched portion 111. The notched portion 111 is used for surrounding at least part of the main shaft 200, i.e. the notched portion 111 is adapted to the lower contour of at least part of the main shaft 200, so as to be limited and abut against the main shaft 200.

[0037] The pad plate 3 is used to abut against the main shaft 200, and the side plates 11 abut against the lower surface of the pad plate 3 upward. In this way, only the upper edge portion of the side plates 11 of the lower pressing piece 1 is in contact with the main shaft 200 originally, and in this embodiment, the lower pressing piece 1 is in contact with the main shaft 200 through the pad plate 3, and the contact area is increased to the area of the upper surface of the pad plate 3, so that the local stress received by the main shaft 200 can be reduced.

[0038] Further, the length of the pad plate 3 in the axial direction of the main shaft 200 is greater than the distance between the two side plates 11, and specifically greater than the distance between the sides away from each other of the two side plates 11, so that the pad plate 3 is stably arranged on the two side plates 11.

[0039] Please refer to Figures 3 to 6 As shown, the lower pressing piece 1 further comprises clamping portions 13 arranged in the notched portions 111, and the pad plate 3 is fixed to the lower pressing piece 1 and covers the top of the two side plates 11 through the clamping portions 13. Further, the pad plate 3 is provided with clamping holes 31 penetrating upward and downward, and the pad plate 3 is adaptively connected with the clamping portions 13 through the clamping holes 31 to be fixed to the lower pressing piece 1, and the pad plate 3 abuts downward on the notched portions 111. Specifically, the notched portions 111 are recessed downward from the middle part of the upper edge of the side plates 11, and the clamping portions 13 extend perpendicularly to the side plates 11 from the middle part of the notched portions 111. Further, the two clamping portions 13 extend from the notched portions 111 of the two side plates 11 toward the sides away from each other, and the clamping portions 13 and the side plates 11 are connected through a round corner transition, so that the clamping portions 13 and the clamping holes 31 can be stably connected, and at the same time, the connection between the clamping portions 13 and the side plates 11 will not scratch the pad plate 3 or other components.

[0040] Further, the thickness of the clamping portions 13 is not greater than the thickness of the pad plate 3, so that the upper surface of the pad plate 3 can be maximally in contact with the main shaft 200. In this embodiment, the thickness of the clamping portions 13 is equal to the thickness of the pad plate 3, and the upper surface of the clamping portions 13 is flush with the upper surface of the pad plate 3, that is, the upper surface of the clamping portions 13 and the upper surface of the pad plate 3 are both in contact with the main shaft 200, and the lower surface of the pad plate 3 abuts on the notched portions 111. In other embodiments, the thickness of the clamping portions 13 is less than the thickness of the pad plate 3, so that the upper surface of the clamping portions 13 is lower than the upper surface of the pad plate 3, and the upper surface of the clamping portions 13 is not in contact with the main shaft 200.

[0041] Please refer to Figures 4 to 6As shown, the side plate 11 is further provided with a recessed groove 112 extending from the notch portion 111 towards the bottom plate 12, for clamping with the backing plate 3. Further, the width of the backing plate 3 is not greater than the width of the recessed groove 112, the backing plate 3 is at least partially located in the recessed groove 112, and the depth of the recessed groove 112 is equal to the thickness of the backing plate 3. In this way, the backing plate 3 can be clamped in position on the side plate 11, and the profile formed by the backing plate 3 and the notch portion 111 is adapted to the main shaft 200, thereby making the entire structure more stable.

[0042] When the fastener 21 is fixedly connected to the purlin 100 and the bottom plate 12, the fastener 21 at least partially abuts the two sides of the main shaft 200, so that the fastener 21, the lower pressing piece 1 and the purlin 100 cooperatively surround the outer periphery of the main shaft 200, the lower pressing piece 1 at least partially abuts the lower surface of the main shaft 200, the fastener 21 at least partially abuts the two side surfaces of the main shaft 200, and the purlin 100 at least partially abuts the upper surface of the main shaft 200. In this embodiment, the fastener 21 is a bolt-nut assembly, the bolt is provided through the purlin 100 and the bottom plate 12, and the nut is screwed into and tightened on one side of the bottom plate 12 from the tail of the bolt.

[0043] As shown in Figure 1 , Figure 2 and Figure 7 , the photovoltaic support further comprises a first reinforcing member 22, which is arranged between the purlin 100 and the main shaft 200, and covers the outer surface of the purlin 100 and at least partially abuts the main shaft 200, and the fastener 21 is sequentially provided through the purlin 100, the first reinforcing member 22 and the bottom plate 12 and fixed. The arrangement of the first reinforcing member 22 avoids direct contact between the purlin 100 and the main shaft 200, reduces frictional damage between the two, and increases the strength of the purlin 100, thereby improving the stability of the structural connection.

[0044] As shown in Figure 7 , the photovoltaic support further comprises a second reinforcing member 23, which is arranged in the purlin 100 and adapted to the inner surface of the purlin 100, and the fastener 21 is sequentially provided through the second reinforcing member 23, the purlin 100 and the bottom plate 12 and fixed. The arrangement of the second reinforcing member 23 increases the strength of the purlin 100 and avoids direct contact between the bolt head of the fastener 21 and the purlin 100, thereby reducing damage to the purlin 100 by the fastener 21.

[0045] In the embodiment, the photovoltaic support comprises the first reinforcing member 22 and the second reinforcing member 23, and the fastener 21 is sequentially arranged through the second reinforcing member 23, the purlin 100, the first reinforcing member 22 and the bottom plate 12 and fixed. Further, the first reinforcing member 22 comprises the first horizontal plate 221 and the two first vertical plates 222, and the first horizontal plate 221 and the two first vertical plates 222 abut against the bottom wall and the two side walls of the purlin 100 from the outside; the second reinforcing member 23 comprises the second horizontal plate 231 and the two second vertical plates 232, and the second horizontal plate 231 and the two second vertical plates 232 abut against the bottom wall and the two side walls of the purlin 100 from the inside. The arrangement of the first reinforcing member 22 and the second reinforcing member 23 is equivalent to increasing the thickness of the connection between the purlin 100 and the main shaft 200, thereby strengthening the structural connection strength and improving the stability of the connection structure.

[0046] Further, the first vertical plate 222 and the second vertical plate 232 are fixedly connected through the bolt-nut assembly, so as to further improve the structural strength.

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

[0048] As shown in Figure 1 , Figure 3 and Figure 7 , the photovoltaic support further comprises a third reinforcing member 24, the third reinforcing member 24 is supported and connected between the two side walls of the purlin 100, and the third reinforcing member 24 is located at the end of the purlin 100 away from the main shaft 200. The third reinforcing member 24 comprises a third horizontal plate 241 and two third vertical plates 242, the two third vertical plates 242 are respectively abutted to the inner sides of the two side walls of the purlin 100, the third horizontal plate 241 is located at the side of the third vertical plate 242 away from the bottom wall of the purlin 100, and the third vertical plate 242 is fixedly connected with the side wall of the purlin 100. The arrangement of the third reinforcing member 24 is used to increase the strength of the purlin 100, so as to prevent the two side walls of the purlin 100 from being extruded and deformed inwardly, thereby causing the photovoltaic modules on the purlin 100 to be unstable. As shown in Figures 1 to 3 , the photovoltaic support of the embodiment further comprises diagonal braces 4, the diagonal braces 4 are fixedly connected between the purlin 100 and the lower pressing member 1. Specifically, the two diagonal braces 4 are symmetrically arranged at the two sides of the main shaft 200, one end of the diagonal brace 4 is at least partially abutted to the outer sides of the two side walls of the purlin 100 and connected with the side wall of the purlin 100 through the bolt-nut assembly, and the other end of the diagonal brace 4 is at least partially abutbed to the two side plates 11 of the lower pressing member 1 and connected with the side plate 11 through the bolt-nut assembly. In this way, the support stability of the purlin 100 on the main shaft 200 is improved.

[0049] Further, the other end of the inclined brace 4 is at least partially attached to the side of the two side plates 11 away from each other, and the distance between the side of the two side plates 11 away from each other is equal to the distance between the two side walls of the purlin 100.

[0050] In the embodiment, the lower pressing piece 1, the connecting piece 2 and the pad plate 3 are all made of steel material, and the right angle structures of the three are all formed by bending, so that the three have high rigidity and strength and are simple to manufacture.

[0051] In conclusion, compared with the prior art, the fixing device and the photovoltaic support have the following advantages: the pad plate 3 is arranged between the main shaft 200 and the lower pressing piece 1, the side plate 11 of the lower pressing piece 1 is perpendicular to the main shaft 200, the upper surface of the pad plate 3 is attached to the main shaft 200, and the side plate 11 of the lower pressing piece 1 is perpendicular to the lower surface of the pad plate 3, so that the contact area between the main shaft 200 and the lower pressing piece 1 is increased, and the local buckling of the main shaft 200 caused by excessive local stress of the main shaft 200 is effectively reduced; the lower pressing piece 1 is provided with the clamping portion 13, and the pad plate 3 is provided with the clamping hole 31, so as to adapt to the connection between the lower pressing piece 1 and the pad plate 3, and the stability of the connection between the two is high. The fixing device and the photovoltaic support have simple structure and high strength, and the structural reliability is improved at low cost.

[0052] The above embodiments are only used for describing the present application and not limiting the technical solutions described in the present application. The understanding of the specification should be based on the technical personnel in the technical field, although the present application has been described in detail with reference to the above embodiments, but the ordinary technical personnel in the field should understand that the technical personnel in the field can still modify or equivalently replace the present application, and all technical solutions and improvements which do not deviate from the spirit and scope of the present application should be covered in the scope of the claims of the present application.

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 a portion 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 lower pressure member (1) away from the base plate (12), and the pad (3) is used to abut against the main shaft (200); The pressing member (1) further includes a snap-fit ​​part (13), which is disposed in the recess (111). The pad (3) is fixed to the pressing member (1) through the snap-fit ​​part (13) and covers the top of the two side plates (11).

2. The fixing device according to claim 1, characterized in that: The pad (3) is provided with a snap-fit ​​hole (31), and the pad (3) is fixed to the lower pressure member (1) through the snap-fit ​​hole (31) and the snap-fit ​​part (13).

3. The fixing device according to claim 2, characterized in that: The two snap-fit ​​portions (13) extend away from each other from the recesses (111) of the two side plates (11), and the thickness of the snap-fit ​​portion (13) is not greater than the thickness of the pad (3).

4. The fixing device according to claim 3, characterized in that: The snap-fit ​​portion (13) at least partially abuts against the spindle (200).

5. The fixing device according to claim 1, characterized in that: The side plate (11) is also provided with a sink groove (112), which extends from the recess (111) toward the bottom plate (12), and the pad (3) is at least partially located in the sink groove (112), the depth of the sink groove (112) being equal to the thickness of the pad (3).

6. 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 5, the fixing device being fixedly connected to the purlin (100) and the main shaft (200).

7. The photovoltaic support according to claim 6, 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.

8. The photovoltaic support according to claim 7, 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), 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 first reinforcing member (22) includes a first horizontal plate (221) and two first vertical plates (222), the first horizontal plate (221) and the two first vertical plates (222) 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), the second horizontal plate (231) and the two second vertical plates (232) abutting against the bottom wall and two side walls of the purlin (100) from the inside; The fastener (21) is sequentially inserted through the second horizontal plate (231), the bottom wall of the purlin (100), the first horizontal plate (221) and the bottom plate (12) and fixed thereto. The first vertical plate (222), the side wall of the purlin (100) and the second vertical plate (232) are fixedly connected.

10. The photovoltaic support according to claim 6, 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).

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