Quick connection structure of photovoltaic support purline and oblique beam

Abstract

The invention relates to the field of photovoltaic support structure design, in particular to a rapid connection structure of a photovoltaic support purline and an oblique beam, which comprises a photovoltaic module steel frame, a cold forming C-shaped oblique beam, a cold forming Z-shaped purline and a cold forming L-shaped purline support, the upper flange of the cold forming Z-shaped purline is connected with the photovoltaic module steel frame through a single-sided rivet, and the lower flange of the cold forming Z-shaped purline is connected with the cold forming L-shaped purline support; the lower flange of the cold forming Z-shaped purline is connected with the cold forming C-shaped oblique beam through a single-face rivet. The long limb of the cold forming L-shaped purlin support is connected with a web of the cold forming Z-shaped purlin through a self-plugging rivet, and the short limb of the cold forming L-shaped purlin support is connected with the cold forming C-shaped oblique beam through a single-face rivet. According to the cold-formed Z-shaped purline, openings of the upper flange, the lower flange and the web are all long-strip-shaped groove holes, and the design can effectively compensate installation errors; in addition, by adopting a novel rivet connection mode, the installation efficiency of the photovoltaic support can be improved, and the photovoltaic support is suitable for industrial construction.

Description

Technical Field

[0001] The invention relates to the field of photovoltaic support structure design, and in particular to a quick connection structure of a photovoltaic support purlin and an inclined beam. Background Art

[0002] The photovoltaic support system is one of the basic components of a photovoltaic power station, and its main function is to fix and support photovoltaic panels. As a key component in the support system, the purlin bears various static and dynamic loads transmitted by the photovoltaic panels, so its connection strength and structural stability are crucial to the safe operation of the entire photovoltaic power station.

[0003] Traditional photovoltaic support systems usually use bolt connections. Bolt connections usually require multiple parts such as bolts, washers, nuts, etc. The installation process is highly dependent on manual labor and is difficult to adapt to the future trend of industrialized construction of photovoltaic support structures. Compared with bolt connections, rivet connections can generate permanent preload after assembly. The preload dispersion is low, self-loosening will not occur, and the fatigue resistance is better than that of bolt connections. The tight mechanical connection at the rivet connection node can also effectively prevent the infiltration of corrosive media, and has better anti-corrosion performance than bolt connections. In addition, the installation of rivet connections has a high degree of automation, which can help the development of industrialized construction technology for photovoltaic supports. At present, the application of rivet connection technology in photovoltaic support structures is rare in China, and the commonly used connection structure between purlins and diagonal beams cannot solve the above technical problems in a targeted manner. It is urgent to improve the corresponding method and develop a quick connection structure. Summary of the invention

[0004] The purpose of the present invention is to solve the deficiencies existing in the prior art and to provide a quick connection structure for the purlins and diagonal beams of a photovoltaic support. The present invention introduces single-sided rivets and blind rivets, which are widely used in industrial fields such as automobiles, railways, aerospace, etc., but are still less used in photovoltaic support systems. If single-sided rivets or blind rivets can be introduced into the connection of photovoltaic supports, it may bring significant advantages. Compared with traditional bolt connection methods, the installation quality of single-sided rivets and blind rivets is controllable, the dispersion of assembly preload force is lower, self-loosening will not occur, and accessories such as washers and nuts are not required. Only simple tools are needed to complete the installation, which will greatly simplify the construction process, improve installation efficiency, and enhance the stability and durability of the connection. The quick connection structure includes: Photovoltaic module steel frames, cold-formed C-shaped diagonal beams, cold-formed Z-shaped purlins and cold-formed L-shaped purlin brackets; The upper flange of the cold-formed Z-shaped purlin is adjustably connected to the steel frame of the photovoltaic module through a single-sided rivet, and the lower flange of the cold-formed Z-shaped purlin is adjustably connected to the cold-formed C-shaped diagonal beam through a single-sided rivet; the long limb of the cold-formed L-shaped purlin support is adjustably connected to the web of the cold-formed Z-shaped purlin through a blind rivet, and the short limb of the cold-formed L-shaped purlin support is connected to the cold-formed C-shaped diagonal beam through a single-sided rivet.

[0005] Furthermore, the cross-sectional thickness of the cold-formed L-shaped purlin bracket is greater than the cross-sectional thickness of the cold-formed Z-shaped purlin.

[0006] Furthermore, a circular opening is provided at the lower part of the photovoltaic module steel frame, and an elongated slot is provided at the upper flange of the cold-formed Z-shaped purlin; the upper flange of the cold-formed Z-shaped purlin is connected to the photovoltaic module steel frame by a single-sided rivet penetrating the elongated slot and the circular opening; The lower flange of the cold-formed Z-shaped purlin is provided with a long strip slot hole, and the lower flange of the cold-formed Z-shaped purlin is connected to the cold-formed C-shaped oblique beam through a single-sided rivet passing through the long strip slot hole.

[0007] Furthermore, a circular opening is provided at the long limb of the cold-formed L-shaped purlin support; a long strip slot is provided at the web of the cold-formed Z-shaped purlin, and the cold-formed Z-shaped purlin is connected to the long limb of the cold-formed L-shaped purlin support by passing through the long strip slot and the circular opening with a blind rivet.

[0008] Furthermore, a circular opening is provided at the short limb of the cold-formed L-shaped purlin bracket, and the cold-formed L-shaped purlin bracket is connected to the upper flange of the cold-formed C-shaped oblique beam by passing a single-sided rivet through the circular opening.

[0009] Furthermore, the cold-formed L-shaped purlin brackets and the cold-formed Z-shaped purlins are both manufactured by cold forming technology.

[0010] Furthermore, the length of the long limb of the cold-formed L-shaped purlin bracket matches the height of the cold-formed Z-shaped purlin web.

[0011] Furthermore, the single-sided rivet is made of high-strength alloy material.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. A quick connection structure of a photovoltaic bracket purlin and an inclined beam of the present invention only requires connecting the short limb of a cold-formed L-shaped purlin support with the cold-formed C-shaped inclined beam through a single-sided rivet, and then connecting the lower flange of a cold-formed Z-shaped purlin with the cold-formed C-shaped inclined beam through a single-sided rivet, and then connecting the cold-formed Z-shaped purlin with the long limb of a cold-formed L-shaped purlin support through a blind rivet, and finally connecting the photovoltaic module steel frame with the upper flange of the cold-formed Z-shaped purlin through a single-sided rivet to complete the connection; the construction method is simple and convenient, can significantly improve the installation efficiency of the photovoltaic bracket, and is suitable for industrialized construction.

[0013] 2. The single-sided rivets used in the quick connection structure of the purlins and diagonal beams of a photovoltaic support of the present invention greatly improve the connection quality. Compared with the bolt connection, the preload force dispersion of the assembly is lower and self-loosening will not occur.

[0014] 3. The openings of the upper flange, lower flange and web of the cold-formed Z-shaped purlin of the quick connection structure between the purlin and the inclined beam of the photovoltaic support of the present invention are all long strip-shaped slots. This design can effectively compensate for installation errors.

[0015] 4. The quick connection structure of the photovoltaic support purlin and the diagonal beam of the present invention significantly improves the mechanical properties and corrosion resistance of the photovoltaic support node through cold forming processing technology and rivet connection technology, and is suitable for use in a strong corrosive environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a front view of a quick connection structure between a photovoltaic support purlin and an inclined beam of the present invention; Figure 2 It is a front isometric view of a quick connection structure between a purlin and an inclined beam of a photovoltaic support according to the present invention; Figure 3 It is a rear isometric view of a quick connection structure between a purlin and an inclined beam of a photovoltaic support according to the present invention; Figure 4 An isometric view of a cold-formed L-shaped purlin bracket of a quick connection structure between a purlin and an inclined beam of a photovoltaic support according to the present invention; Figure 5 The isometric view of the cold-formed Z-shaped purlin of the quick connection structure of the purlin and the inclined beam of the photovoltaic support of the present invention.

[0017] Reference numerals 1: Photovoltaic module steel frame; 2: Cold-formed C-shaped diagonal beam; 3: Cold-formed Z-shaped purlin; 4: Cold-formed L-shaped purlin support; 5: Circular opening; 6: Long slot hole; 7: Single-sided rivet; 8: Blind rivet. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] See also Figure 1-5 The technical solution of a quick connection structure between a photovoltaic support purlin and an inclined beam provided in this embodiment includes the following: Photovoltaic module steel frame 1, cold-formed C-shaped diagonal beam 2, cold-formed Z-shaped purlin 3 and cold-formed L-shaped purlin bracket 4; The upper flange of the cold-formed Z-shaped purlin 3 is adjustably connected to the photovoltaic module steel frame 1 through a single-sided rivet 7, and the lower flange of the cold-formed Z-shaped purlin 3 is adjustably connected to the cold-formed C-shaped diagonal beam 2 through a single-sided rivet 7; the long limb of the cold-formed L-shaped purlin support 4 is adjustably connected to the web of the cold-formed Z-shaped purlin 3 through a blind rivet 8, and the short limb of the cold-formed L-shaped purlin support 4 is connected to the cold-formed C-shaped diagonal beam 2 through a single-sided rivet 7.

[0020] Specifically, the cross-sectional thickness of the cold-formed L-shaped purlin bracket 4 is greater than the cross-sectional thickness of the cold-formed Z-shaped purlin 3 to ensure the bearing performance of the connection node. The cold-formed C-shaped diagonal beam 2, the cold-formed Z-shaped purlin 3, and the cold-formed L-shaped purlin bracket 4 are made of galvanized steel to ensure the durability of the photovoltaic bracket in various environments.

[0021] Specifically, the upper flange of the cold-formed Z-shaped purlin 3 is provided with a long strip slot 6; the lower part of the photovoltaic module steel frame 1 is provided with a circular opening 5, and the photovoltaic module steel frame 1 is connected to the upper flange of the cold-formed Z-shaped purlin 3 by a single-sided rivet 7 penetrating the long strip slot 6 and the circular opening 5; The lower flange of the cold-formed Z-shaped purlin 3 is provided with a long strip slot 6 , and the lower flange of the cold-formed Z-shaped purlin 3 is connected to the cold-formed C-shaped oblique beam 2 through a single-sided rivet 7 passing through the long strip slot 6 .

[0022] Preferably, the upper and lower flanges of the cold-formed Z-shaped purlin 3 are provided with long strip slots 6 to enable appropriate fine-tuning during installation. Compared with the traditional round hole design, the slots provide greater installation flexibility and effectively reduce the installation stress caused by installation errors.

[0023] Specifically, a circular opening 5 is provided at the long limb of the cold-formed L-shaped purlin support 4; a long strip slot 6 is provided at the web of the cold-formed Z-shaped purlin 3, and the cold-formed Z-shaped purlin 3 is connected to the long limb of the cold-formed L-shaped purlin support 4 through a blind rivet 8 that penetrates the long strip slot 6 and the circular opening 5 (the force transmitted between the long limb of the cold-formed L-shaped purlin support 4 and the web of the cold-formed Z-shaped purlin 3 is relatively small, and the blind rivet 8 is more convenient to install, which plays a role in fixing and restraining the deformation of the web).

[0024] Preferably, the web of the cold-formed Z-shaped purlin 3 is also provided with a long slot hole 6 to ensure that the blind rivet 8 can pass through the long slot hole 6 and the circular opening 5 on the cold-formed L-shaped purlin bracket 4, and accurately connect the cold-formed Z-shaped purlin 3 with the cold-formed L-shaped purlin bracket 4 to cope with possible errors during the installation process, especially when the cold-formed Z-shaped purlin 3 is installed in the longitudinal direction.

[0025] Specifically, a circular opening 5 is provided at the short limb of the cold-formed L-shaped purlin support 4, which is connected to the upper flange of the cold-formed C-shaped diagonal beam 2 through a single-sided rivet 7 (the connection strength of the single-sided rivet 7 is higher than that of the blind rivet 8, because the force transmitted between the cold-formed L-shaped purlin support 4 and the cold-formed C-shaped diagonal beam 2 is greater than the force between the cold-formed L-shaped purlin support 4 and the web of the cold-formed Z-shaped purlin 3).

[0026] Specifically, the cold-formed C-shaped oblique beam 2, the cold-formed Z-shaped purlin 3, and the cold-formed L-shaped purlin bracket 4 are all made by cold forming processes such as bending or rolling, and have controllable dimensions and high precision.

[0027] Specifically, the length of the long limb of the cold-formed L-shaped purlin bracket 4 matches the height of the web of the cold-formed Z-shaped purlin 3 .

[0028] Specifically, the single-sided rivet 7 is made of high-strength alloy material to ensure the firmness of the connection.

[0029] Preferably, no traditional bolt connection method is used in this structure. Instead, a single single-sided rivet 7 or a blind rivet 8 is used in conjunction with a rivet gun and other tools to replace the complex operation process consisting of installation bolts, gaskets, nuts, etc., which greatly simplifies the construction process, improves construction efficiency, and is suitable for industrialized construction; by splicing and connecting the cold-formed L-shaped purlin support 4 and the cold-formed Z-shaped purlin 3, the cross-sectional strength is increased, the cross-sectional efficiency is optimized, and the overall strength and stability of the system are improved.

[0030] The working principle or working process of the quick connection structure of the photovoltaic support purlin and the inclined beam provided by the present invention is: 1) Connecting the cold-formed L-shaped purlin bracket 4 and the cold-formed C-shaped diagonal beam 2: Fitting the short leg of the cold-formed L-shaped purlin bracket 4 with the upper flange of the cold-formed C-shaped diagonal beam 2, and then using a single-sided rivet 7 to pass through the circular opening 5 on the short leg of the cold-formed L-shaped purlin bracket 4, the cold-formed L-shaped purlin bracket 4 is connected and fixed to the designated position of the cold-formed C-shaped diagonal beam 2; 2) Connecting the cold-formed Z-shaped purlin 3 and the cold-formed C-shaped diagonal beam 2: Fitting the lower flange of the cold-formed Z-shaped purlin 3 with the upper flange of the cold-formed C-shaped diagonal beam 2, using a single-sided rivet 7 to pass through the long strip slot 6 on the lower flange of the cold-formed Z-shaped purlin 3, and connecting and fixing the cold-formed Z-shaped purlin 3 to the designated position of the cold-formed C-shaped diagonal beam 2; 3) Connect the cold-formed Z-shaped purlin 3 and the cold-formed L-shaped purlin bracket 4: align the long strip slot 6 on the web of the cold-formed Z-shaped purlin 3 with the circular opening 5 on the long limb of the cold-formed L-shaped purlin bracket 4, use a blind rivet 8 to first pass through the long strip slot 6 and then through the circular opening 5, and connect and fix the web of the cold-formed Z-shaped purlin 3 and the long limb of the cold-formed L-shaped purlin bracket 4; 4) Connect the photovoltaic module steel frame 1 and the cold-formed Z-shaped purlin 3: align the circular opening 5 on the photovoltaic module steel frame 1 with the long slot 6 on the upper flange of the cold-formed Z-shaped purlin 3, use a single-sided rivet 7 to pass through the long slot 6 and then through the circular opening 5 of the photovoltaic module steel frame 1, and fix the photovoltaic module steel frame 1 to the specified position of the cold-formed Z-shaped purlin 3.

[0031] In the embodiment of the present invention, the cold-formed L-shaped purlin support 4 is connected to the cold-formed Z-shaped purlin 3 by means of blind rivets 8, thereby increasing the cross-sectional strength, and is fixed to the cold-formed C-shaped diagonal beam 2 by means of single-sided rivets 7, thereby greatly improving the installation speed, enhancing the flexibility and reliability of the installation, as well as the overall strength and stability of the system. The system is suitable for the construction of photovoltaic power stations in various complex environments, and has a long service life and low maintenance costs.

[0032] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A quick connection structure between a photovoltaic support purlin and an inclined beam, characterized in that: include: Photovoltaic module steel frames, cold-formed C-shaped diagonal beams, cold-formed Z-shaped purlins and cold-formed L-shaped purlin brackets; The upper flange of the cold-formed Z-shaped purlin is adjustably connected to the steel frame of the photovoltaic module through a single-sided rivet, and the lower flange of the cold-formed Z-shaped purlin is adjustably connected to the cold-formed C-shaped diagonal beam through a single-sided rivet; the long limb of the cold-formed L-shaped purlin support is adjustably connected to the web of the cold-formed Z-shaped purlin through a blind rivet, and the short limb of the cold-formed L-shaped purlin support is connected to the cold-formed C-shaped diagonal beam through a single-sided rivet.

2. The quick connection structure of photovoltaic support purlin and diagonal beam according to claim 1 is characterized in that: The cross-sectional thickness of the cold-formed L-shaped purlin bracket is greater than the cross-sectional thickness of the cold-formed Z-shaped purlin.

3. The quick connection structure of photovoltaic support purlin and diagonal beam according to claim 1 is characterized in that: A circular opening is provided at the lower part of the photovoltaic module steel frame, and a long slot is provided at the upper flange of the cold-formed Z-shaped purlin; the upper flange of the cold-formed Z-shaped purlin is connected to the photovoltaic module steel frame by a single-sided rivet penetrating the long slot and the circular opening; The lower flange of the cold-formed Z-shaped purlin is provided with a long strip slot hole, and the lower flange of the cold-formed Z-shaped purlin is connected to the cold-formed C-shaped oblique beam through a single-sided rivet passing through the long strip slot hole.

4. The quick connection structure of photovoltaic support purlin and diagonal beam according to claim 1 is characterized in that: The long limb of the cold-formed L-shaped purlin support is provided with a circular opening; the web of the cold-formed Z-shaped purlin is provided with a long strip slot hole, and the cold-formed Z-shaped purlin is connected to the long limb of the cold-formed L-shaped purlin support by passing through the long strip slot hole and the circular opening with a blind rivet.

5. The quick connection structure of photovoltaic support purlin and diagonal beam according to claim 1, characterized in that: A circular opening is provided at the short limb of the cold-formed L-shaped purlin bracket, and the cold-formed L-shaped purlin bracket is connected to the upper flange of the cold-formed C-shaped oblique beam by passing a single-sided rivet through the circular opening.

6. The quick connection structure of photovoltaic support purlin and diagonal beam according to claim 1, characterized in that: The cold-formed L-shaped purlin bracket and the cold-formed Z-shaped purlin are both manufactured by cold-forming technology.

7. The quick connection structure of photovoltaic support purlin and diagonal beam according to claim 1, characterized in that: The length of the long limb of the cold-formed L-shaped purlin bracket matches the height of the cold-formed Z-shaped purlin web.

8. The quick connection structure of photovoltaic support purlin and diagonal beam according to claim 1, characterized in that: Single-sided rivets are made of high-strength alloy material.

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