Photovoltaic support and photovoltaic device

Abstract

The utility model relates to the technical field of photovoltaic equipment, and specifically provides a photovoltaic support and photovoltaic equipment, the photovoltaic support comprises a photovoltaic support body, and a bolt, a gasket and a nut used for fixing the photovoltaic equipment on the photovoltaic support body, and the photovoltaic support also comprises a support member in a hollow cylindrical shape; the first bonding layer is arranged on the outer surface of the supporting piece; the cold shrinkage part is arranged on the outer surface of the first bonding layer in a sleeving manner; the second bonding layer is used for being smeared on the bolt and the nut; when the supporting piece is pulled out, the first bonding layer can be bonded with the second bonding layer along with contraction of the cold contraction piece. Therefore, tough bonding force can be formed in the thread gaps, the outer portion of the nut and the threads of the bolt are bonded with the cold shrinkage part, the corrosion resistance of the bolt and the nut is enhanced, the bolt and the nut are effectively prevented from rusting, the bolt and the nut are tightly wrapped by the cold shrinkage part, and the service life of the bolt and the nut is prolonged. And the fastening effect is greatly improved when the bolt connection of the photovoltaic bracket is in a through hole working condition.

Description

Technical Field

[0001] The present application relates to the technical field of photovoltaic equipment, and in particular to a photovoltaic bracket and photovoltaic equipment. Background Art

[0002] The existing fastener connection between photovoltaic brackets and purlins and diagonal braces is mostly connected by bolts. In order to prevent the nut from loosening, a flat washer and a spring washer are generally added to cooperate with the nut.

[0003] However, after a photovoltaic power station has been running for a long time, the photovoltaic bracket will produce irregular vibrations when subjected to external forces, causing the nuts to gradually loosen or even fall off, resulting in poor fastening effects of existing photovoltaic brackets.

[0004] Therefore, the prior art has defects and deficiencies and needs further improvement and development. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present application is to provide a photovoltaic bracket and a photovoltaic device, aiming to solve the problem of poor fastening effect of the photovoltaic bracket in the prior art.

[0006] A technical solution adopted by the present application to solve the technical problem is as follows: the photovoltaic bracket includes a photovoltaic bracket body, and bolts, washers and nuts for fixing the photovoltaic device on the photovoltaic bracket body, and the photovoltaic bracket also includes:

[0007] A support member, wherein the support member is in a hollow cylindrical shape;

[0008] a first bonding layer, the first bonding layer being disposed on the outer surface of the support member;

[0009] A cold shrink piece, which is sleeved on the outer surface of the first bonding layer;

[0010] a second adhesive layer, the second adhesive layer being applied to the bolts and nuts;

[0011] When the supporting member is pulled out, the first adhesive layer will bond with the second adhesive layer as the shrinkable member shrinks.

[0012] Optionally, the length calculation formula of the shrink part is L=L0+L1+L2; wherein, L is the length of the shrink part, L0 is the sum of the thickness of the nut and the length of the thread in the bolt not covered by the nut, L1 is the top end closing amount of the bolt, and L2 is the side end closing amount of the washer.

[0013] Optionally, the bonding force of the first bonding layer to the supporting member is smaller than the bonding force of the first bonding layer to the shrinkable member.

[0014] Optionally, the support member comprises:

[0015] A support tube, wherein the support tube is spirally extended into a hollow cylindrical shape;

[0016] A pull-out strip is fixedly connected to the end of the support tube and is used to pull out the support tube.

[0017] Optionally, the shrinkable component is integrally provided with the first adhesive layer.

[0018] Optionally, the length of the shrink member is smaller than the length of the support member.

[0019] Optionally, the shrinkable component is configured as a light-transmitting structure.

[0020] Optionally, the longitudinal extension length of the shrinkable component is the same as the longitudinal extension length of the first adhesive layer.

[0021] Optionally, a side of the shrinkable part close to the gasket reserves a closing amount of 1mm to 2mm, and a side of the shrinkable part away from the gasket reserves a closing amount of 2mm to 3mm.

[0022] Another technical solution adopted by the present application to solve the technical problem is as follows: a photovoltaic device, which includes the photovoltaic bracket as described above.

[0023] Compared with the prior art, the present application provides a photovoltaic bracket and a photovoltaic device. The photovoltaic bracket pulls out the support part, and the first adhesive layer cooperates closely with the shrinkable part. As the shrinkable part shrinks, the first adhesive layer is tightly combined with the second adhesive layer applied to the bolt and the nut, forming a strong bonding force in the thread gap, so that the outside of the nut and the thread of the bolt are respectively bonded to the shrinkable part, thereby enhancing the corrosion resistance of the bolt and the nut, effectively preventing the bolt and the nut from rusting, and allowing the shrinkable part to tightly cover the bolt and the nut, greatly improving the fastening effect of the photovoltaic bracket when the bolt connection is a through-hole condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional exploded structure of the photovoltaic bracket provided in this application;

[0025] Figure 2 is a front view of the photovoltaic bracket provided in this application;

[0026] Figure 3 This application provides Figure 2 A schematic cross-sectional view along the Ⅰ-Ⅰ direction;

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure of the cold shrink member, the first bonding layer and the support member of the photovoltaic bracket provided in this application;

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the first bonding layer and the cold shrink piece of the photovoltaic bracket provided in this application;

[0029] Figure 6 It is a schematic diagram of the three-dimensional structure of the support member of the photovoltaic bracket provided in this application.

[0030] Description of reference numerals:

[0031] 10. Photovoltaic bracket; 11. Support member; 12. First adhesive layer; 13. Shrink member; 14. Second adhesive layer; 15. Washer; 16. Bolt; 17. Nut; 19. Photovoltaic bracket body; 111. Support tube; 112. Pull-out strip. DETAILED DESCRIPTION

[0032] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0033] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] Please refer to Figures 1 to 3The first embodiment of the present application provides a photovoltaic bracket 10, which includes a photovoltaic bracket body 19, and a washer 15, a bolt 16 and a nut 17 for fixing the photovoltaic device on the photovoltaic bracket body 19. The photovoltaic bracket 10 also includes a support member 11, a first bonding layer 12, a shrink member 13 and a second bonding layer 14; when using the photovoltaic bracket 10, the bolt 16, the flat washer 15 and the elastic washer 15 are first passed through the through-hole structure of the photovoltaic bracket body 19 in sequence, and before installing the nut 17, the thread glue is applied to the position of the bolt 16 corresponding to the nut 17, and then the nut 17 is screwed in, so that the nut 17 is subjected to bonding force, which increases the friction between the nut 17 and the bolt 16. When the photovoltaic bracket 10 vibrates, under the action of the bonding force, the nut 17 will not produce thread retreat, which plays a limiting role on the nut 17 and improves the firmness of the nut 17. After applying the thread glue, first apply the second adhesive layer 14 on the outermost layer and remaining threads of the nut 17, insert the shrink piece 13 into the outside of the overall assembly structure after the nut 17 is installed, and the installation position of the top of the shrink sleeve is located above the spring washer 15. Pull out the support member 11. Since the shrink piece 13 has the characteristics of high elastic retraction, it shrinks radially in the absence of the support of the support member 11. Under the shrinkage action of the shrink piece 13, the first adhesive layer 12 is mixed and contacted with the second adhesive layer 14, forming a strong adhesive force in the thread gap, so that the outside and threads of the nut 17 are respectively bonded to the shrink piece 13 to prevent the shrink piece 13 from displacement, and then the inside and outside of the nut 17 are subjected to the adhesive force, which plays a role of double anti-loosening and double fixation of the nut 17.

[0036] Please refer to Figures 1 to 3 In some embodiments, the photovoltaic bracket 10 further includes a support member 11, a first adhesive layer 12, a shrinkable member 13, and a second adhesive layer 14; the support member 11 is in a hollow cylindrical shape; the first adhesive layer 12 is arranged on the outer surface of the support member 11; the shrinkable member 13 is sleeved on the outer surface of the first adhesive layer 12; the second adhesive layer 14 is used to be applied to the bolt 16 and the nut 17; wherein, when the support member 11 is pulled out, the first adhesive layer 12 will shrink along with the shrinkable member 13 It bonds with the second bonding layer 14, and then can form a strong bonding force in the thread gap, so that the outside of the nut 17 and the thread of the bolt 16 are respectively bonded to the shrink part 13, thereby enhancing the corrosion resistance of the bolt 16, nut 17 and washer 15, effectively preventing the bolt 16 and nut 17 from rusting, and making the shrink part 13 tightly cover the bolt 16 and nut 17 to prevent the shrink part 13 from displacement, which greatly improves the fastening effect of the nut 17 in the photovoltaic bracket 10 when the bolt 16 in the photovoltaic bracket 10 is connected as a through-hole working condition.

[0037] Please refer to Figure 3In some embodiments, the length calculation formula of the shrink piece 13 is L=L0+L1+L2; wherein, L is the length of the shrink piece 13, L0 is the sum of the thickness of the nut 17 and the thread length of the bolt 16 not covered by the nut, L1 is the top end closing amount of the bolt 16, and L2 is the side closing amount of the washer 15, thereby ensuring that the length of the shrink sleeve is precisely matched with the size of the bolt 16, nut 17 and washer 15 in the photovoltaic bracket 10, which not only improves the installation efficiency of the shrink piece 13, but also ensures that the shrink piece 13 can completely cover and wrap the bolt 16 and nut 17, achieving a tight sealing and tightening effect, further enhancing the corrosion resistance of the bolt 16 and nut 17, and extending the service life of the bolt 16 and nut 17.

[0038] Please refer to Figure 3 In some embodiments, Table 1 gives a length calculation formula for the cold shrink part 13 and a reference example for selecting the inner diameter size of the composite cold shrink tube, which is convenient for guiding actual production. Taking M20 and M30 as examples, the reliability and practicality of the cold shrink part 13 are further enhanced. Table 1 is an application example table of the inner diameter and shrinkage size selection of the cold shrink part 13.

[0039] Table 1 Application examples of inner diameter and shrinkage ratio of cold shrink parts

[0040]

[0041]

[0042] Please refer to Figure 3 In some embodiments, the bonding force of the first adhesive layer 12 to the support member 11 is smaller than the bonding force to the shrink member 13, thereby ensuring that after the support member 11 is removed, the first adhesive layer 12 can be firmly adhered to the shrink member 13 instead of being pulled out together with the support member 11, thereby ensuring that the shrink member 13 can effectively wrap and bond the bolts 16 and nuts 17, greatly improving the anti-loosening and fixing effects of the nuts.

[0043] Please refer to Figure 6 In some embodiments, the support member 11 includes a support tube 111 and a pull-out strip 112. The support tube 111 is spirally extended into a hollow cylindrical shape, that is, a support tube 111 is made into a hollow cylindrical shape by spiral extension, thereby ensuring that the support member 11 has sufficient supporting strength and that the shrinkable part 13 can maintain a stable shape; the pull-out strip 112 is fixedly connected to the end of the support tube 111, and the pull-out strip 112 is used to pull out the support tube 111, thereby making the pulling-out operation of the support tube 111 simple and convenient, greatly improving the efficiency of installation and disassembly.

[0044] Please refer to Figure 5 In some embodiments, the shrinkable component 13 is integrally provided with the first adhesive layer 12 , thereby making the connection between the two tighter and less likely to separate, further enhancing the reliability and practicality of the shrinkable component 13 .

[0045] Please refer to Figure 4 In some embodiments, the length of the shrink member 13 is less than the length of the support member 11, thereby ensuring that after the support member 11 is pulled out, the shrink member 13 can completely cover and wrap the bolts 16 and nuts 17 that need to be tightened, forming an effective fastening layer and waterproof layer, further enhancing the corrosion resistance of the bolts 16, nuts 17 and washers 15, and extending the service life of the bolts 16 and nuts 17.

[0046] Please refer to Figures 1 to 3 In some embodiments, the shrink piece 13 is arranged at a position 2mm to 4mm away from the front end of the support member 11, the thickness of the shrink piece 13 is 2mm to 4mm, the shrink piece 13 has a shrinkage rate of 3 times to 3.5 times, one end of the inner diameter after shrinkage is the circumscribed circle diameter of the nut 17, and the other end is the nominal diameter of the thread. The length of the shrink piece 13 is the sum of the thickness of the nut 17, the thread of the bolt 16 not covered by the nut 17, the closing amount of the nut 17 close to the washer 15 side and the closing amount of the thread top, thereby ensuring that the shrink piece 13 can fit tightly against the nut 17 and the thread during the shrinkage process, thereby improving the sealing and stability of the photovoltaic bracket 10.

[0047] Please refer to Figures 1 to 3 In some embodiments, a closing amount of 1 mm to 2 mm is reserved on the side of the shrinkable part close to the washer, and a closing amount of 2 mm to 3 mm is reserved on the side of the shrinkable part away from the washer, thereby balancing the tolerances of the nut 17, the washer 15 and the thread, and avoiding the superposition of errors among the thread, the nut 17 and the washer 15, resulting in the length of the shrinkable part 13 after shrinkage being shorter than the sum of the thickness of the nut 17 and the length of the remaining exposed thread; at the same time, the sum of the closing amount reserved on the side of the shrinkable part 13 close to the washer 15 and the length of the shrinkable part 13 from the support member 11 is less than the sum of the thickness of the washer 15, thereby effectively wrapping the nut 17 and the top thread, thereby improving the waterproofness of the photovoltaic bracket 10.

[0048] Please refer to Figures 1 to 3In some embodiments, the thickness of the first adhesive layer 12 is 0.1 mm to 0.2 mm, the length of the first adhesive layer 12 is equal to the length of the shrink piece 13, the thickness of the support member 11 is 2 mm, and the inner diameter of the support member 11 is 8 mm to 10 mm larger than the circumscribed circle diameter of the nut 17, thereby ensuring that the spatial distance between the inner diameter of the support member 11 and the outer edge of the nut 17 is at least 4 mm to 5 mm, which is convenient for pulling out the support member 11, and further ensuring that the shrink piece 13 can fit tightly against the nut 17 and the thread during the shrinkage process, thereby improving the sealing and stability of the photovoltaic bracket 10.

[0049] Please refer to Figures 1 to 3 In some embodiments, the shrink fit part 13 is configured as a light-transmitting structure, so that the user can intuitively observe the tightening status of the bolts 16 and the nuts 17 and the shrinkage of the shrink fit part 13, further facilitating the user to perform installation and maintenance, and promptly discover and deal with the problem of poor adhesion between the first adhesive layer 12 and the second adhesive layer 14, thereby greatly improving the practicality and durability of the photovoltaic bracket 10.

[0050] Please refer to Figure 5 In some embodiments, the longitudinal extension length of the shrink piece 13 is the same as the longitudinal extension length of the first adhesive layer 12, thereby ensuring that the shrink piece 13 and the first adhesive layer 12 can completely cover and tightly combine when wrapping the bolts 16, nuts 17 and washers 15, so that the shrink piece 13 can form a uniform bonding force when tightening the bolts 16 and nuts 17, thereby improving the tightening effect. This not only improves the tightening effect and sealing performance, but also avoids the installation problem caused by the length mismatch of the shrink piece 13, further improving the practicality and durability of the shrink piece 13.

[0051] Please refer to Figures 1 to 3 In some embodiments, the first adhesive layer 12 is configured as a bisphenol A epoxy resin material, so that the bonding force of the first adhesive layer 12 to the support member 11 is smaller than the bonding force to the shrink member 13, further ensuring that after the support member 11 is removed, the first adhesive layer 12 can be firmly adhered to the shrink member 13 instead of being pulled out together with the support member 11, thereby ensuring that the shrink member 13 can effectively wrap and bond the bolts 16 and the nuts 17.

[0052] Please refer to Figures 1 to 3In some embodiments, the second bonding layer 14 is configured as an alicyclic amine or aliphatic amine mixed curing agent material, which can be mixed and bonded with the first bonding layer 12 to form a strong bonding force, thereby making the nut 17 and the bolt 16 more tightly connected to the shrink part 13, reducing the sliding property of the shrink part 13, avoiding the movement of the shrink part 13, improving the stability of the photovoltaic bracket 10, playing an anti-rust role, and further extending the service life of the nut 17, the bolt 16 and the washer 15.

[0053] Please refer to Figures 1 to 3 In some embodiments, the shrinkable part 13 is made of silicone rubber material, so that the shrinkable part 13 has high temperature aging resistance and strong weather resistance. The shrinkable part 13 can shrink at room temperature without external heating, which can overcome the oxidation problem of the nut 17, bolt 16 and washer 15 caused by ultraviolet radiation, and effectively improve the service life of the nut 17, bolt 16 and washer 15.

[0054] In some embodiments, the first adhesive layer 12 or the second adhesive layer 14 can be configured as a removable adhesive film containing glue or cement, thereby reducing the manufacturing cost and practicality of the photovoltaic bracket 10.

[0055] The second embodiment of the present application provides a photovoltaic device, which includes the photovoltaic bracket as described above, thereby significantly improving the stability and safety of the entire photovoltaic device, reducing photovoltaic device failures and downtime caused by loose brackets, improving the operating efficiency and reliability of the equipment, and further improving the service life and economic benefits of the photovoltaic device.

[0056] In summary, the present application provides a photovoltaic bracket and photovoltaic equipment, the photovoltaic bracket includes a photovoltaic bracket body, and bolts, washers and nuts for fixing the photovoltaic bracket body on a support surface, the photovoltaic bracket also includes: a support member, the support member is hollow cylindrical; a first bonding layer, the first bonding layer is arranged on the outer surface of the support member; a shrink member, the shrink member is sleeved on the outer surface of the first bonding layer; a second bonding layer, the second bonding layer is used to be applied to the bolts and nuts; wherein, when the support member is pulled out, the first bonding layer will shrink and bond with the second bonding layer as the shrink member shrinks. Then, a strong bonding force can be formed in the thread gap, so that the outer part and the thread of the nut are bonded to the shrink member respectively, the corrosion resistance of the bolt and the nut is enhanced, the bolt and the nut are effectively prevented from rusting, and the shrink member tightly covers the bolt and the nut, which greatly improves the fastening effect when the photovoltaic bracket bolt connection is a through-hole working condition.

[0057] It should be understood that the application of the present application is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. A photovoltaic bracket, comprising a photovoltaic bracket body, and bolts, washers and nuts for fixing a photovoltaic device on the photovoltaic bracket body, characterized in that: The photovoltaic support further comprises: A support member, wherein the support member is in a hollow cylindrical shape; a first bonding layer, the first bonding layer being disposed on the outer surface of the support member; A cold shrink piece, which is sleeved on the outer surface of the first bonding layer; a second adhesive layer, the second adhesive layer being applied to the bolts and nuts; When the supporting member is pulled out, the first adhesive layer will bond with the second adhesive layer as the shrinkable member shrinks.

2. The photovoltaic bracket according to claim 1, characterized in that: The length calculation formula of the shrink part is L=L0+L1+L2; wherein, L is the length of the shrink part, L0 is the sum of the thickness of the nut and the length of the thread in the bolt not covered by the nut, L1 is the top end closing amount of the bolt, and L2 is the side closing amount of the washer.

3. The photovoltaic bracket according to claim 1, characterized in that: The bonding force of the first bonding layer to the supporting member is smaller than the bonding force of the first bonding layer to the shrinkable member.

4. The photovoltaic bracket according to claim 1, characterized in that: The support member comprises: A support tube, wherein the support tube is spirally extended into a hollow cylindrical shape; A pull-out strip is fixedly connected to the end of the support tube and is used to pull out the support tube.

5. The photovoltaic support according to claim 1, characterized in that: The shrinkable component is integrally arranged with the first adhesive layer.

6. The photovoltaic support according to claim 1, characterized in that: The length of the shrink member is smaller than the length of the support member.

7. The photovoltaic support according to claim 1, characterized in that: The shrinkable part is configured as a light-transmitting structure.

8. The photovoltaic support according to claim 1, characterized in that: The longitudinal extension length of the shrinkable part is the same as the longitudinal extension length of the first adhesive layer.

9. The photovoltaic support according to claim 1, characterized in that: A closing amount of 1mm to 2mm is reserved on a side of the shrinkable part close to the gasket, and a closing amount of 2mm to 3mm is reserved on a side of the shrinkable part away from the gasket.

10. A photovoltaic device, characterized in that: A photovoltaic bracket comprising any one of claims 1-9.

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