Purlin, purlin mounting mechanism and photovoltaic support

Abstract

The present application relates to photovoltaic support technical field, especially a purlin, purlin mounting mechanism and photovoltaic support, purlin is used for fixing and installing photovoltaic module on photovoltaic support, including rectangular tube, at least two groups of mounting holes are set up along the length direction of rectangular tube, mounting hole is set up on the left and right side surface of rectangular tube and is set up as through hole, photovoltaic module connector, is installed on mounting hole with interference fit, photovoltaic module connector projects from rectangular tube after installation, photovoltaic module connector is composed of the first mounting block and second mounting block of pair arrangement, first mounting block, second mounting block are all provided with self-locking piece that is mutually matched to realize self-locking function;Purlin mounting mechanism includes purlin fixing part, main beam, purlin fixing part locks purlin at the top of main beam by penetrating rectangular tube;Photovoltaic support includes drive column, non-drive column, drive mechanism, bearing seat, bearing, effectively improve the problem of insufficient bearing capacity of purlin in prior art, no support positioning when installing photovoltaic module, time-consuming and laborious, better carrying capacity and structural strength.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic support technology, and in particular to a purlin, a purlin installation mechanism, and a photovoltaic support. Background Technology

[0002] Purlins, as key components connecting the main beam and photovoltaic modules, are widely used in photovoltaic power plants. During use, they must withstand significant wind loads. Currently, most purlins used for installing photovoltaic modules in the photovoltaic industry adopt a Z-shaped cross-section, which is prone to deformation under wind loads, and may even bend or twist, leading to damage to the photovoltaic support structure and increasing maintenance costs.

[0003] To address the aforementioned issues, existing technologies employ a method of adding supports inside the U-shaped purlins to enhance their strength, as exemplified by Chinese utility model patent publication number CN218668216U. However, this approach undoubtedly increases costs and only provides localized reinforcement. Furthermore, during the installation of photovoltaic modules using U-shaped purlins, since the modules are all mounted on top of the purlins, there is no support or positioning between adjacent modules, making installation time-consuming and labor-intensive. Summary of the Invention

[0004] To address the aforementioned problems in the existing technology, a purlin, a purlin installation mechanism, and a photovoltaic support are provided.

[0005] The specific technical solution is as follows:

[0006] A purlin is designed for fixing photovoltaic modules onto a photovoltaic bracket, comprising a rectangular tube, with at least two sets of mounting holes opened along the length of the rectangular tube, the mounting holes being opened on the left and right sides of the rectangular tube and configured as through holes;

[0007] A photovoltaic module connector is interference-fitted onto a mounting hole, and the photovoltaic module connector protrudes from the rectangular tube after installation.

[0008] The photovoltaic module connector consists of a pair of first mounting blocks and a second mounting block, each of which is provided with a self-locking component that cooperates with each other to achieve a self-locking function.

[0009] Preferably, both the first mounting block and the second mounting block are provided with connection holes for mounting photovoltaic modules. After the photovoltaic module connectors are installed, the connection holes on the first mounting block and the connection holes on the second mounting block are aligned.

[0010] Preferably, both the first mounting block and the second mounting block have a limiting part formed at one end. The width of the limiting part is greater than the width of the mounting hole to prevent the photovoltaic module connector from falling off and improve safety.

[0011] Preferably, both the first mounting block and the second mounting block are wedge-shaped blocks, and the wedge blocks are provided with inclined surfaces.

[0012] Preferably, the self-locking component is configured as a wedge-shaped tooth, which is formed on an inclined surface, and self-locking is achieved by the interlocking of the wedge-shaped teeth on the inclined surface.

[0013] Preferably, both the first mounting block and the second mounting block are configured as flat plate structures, and the self-locking component is configured as a protrusion and a recess. The protrusion and the recess are both provided on the first mounting block and the second mounting block. After the first mounting block and the second mounting block are assembled, the protrusion and the recess engage to achieve the self-locking function.

[0014] Preferably, the protrusion is a raised point, and the recess is a groove.

[0015] Preferably, the protrusion is configured as a connecting post fixedly connected to the first mounting block and the second mounting block, and the recess is configured as a limiting through hole opened on the first mounting block and the second mounting block. After the first mounting block and the second mounting block are installed, the connecting post is engaged inside the limiting through hole to achieve self-locking.

[0016] In addition, a purlin installation mechanism is disclosed, including the aforementioned purlin, as well as a purlin fixing member and a main beam, wherein the purlin fixing member passes through a rectangular tube to lock the purlin to the top of the main beam.

[0017] Preferably, the purlin fastener is a U-bolt or a combination clamp as in the prior art.

[0018] To achieve the above objectives, a photovoltaic bracket is also disclosed for supporting the installation of photovoltaic modules. It includes the aforementioned purlin mounting mechanism, as well as a driving column, a non-driving column, a driving mechanism, a bearing seat, and a bearing. The bearing seat is installed on the top of the non-driving column, the bearing is sleeved on the outside of the main beam and installed in the bearing seat, and the driving mechanism is installed on the top of the driving column and connected to the main beam.

[0019] The above technical solution has the following advantages or beneficial effects:

[0020] 1. By using rectangular tubes as the main structure of the purlins to replace the zigzag or other open-section purlins in the existing technology, and using mounting holes on the rectangular tubes to connect the photovoltaic module connectors with interference fit, the problem of insufficient purlin load-bearing capacity and time-consuming and laborious unsupported positioning during photovoltaic module installation in the existing technology is effectively improved.

[0021] 2. The self-locking design ensures the stability of the photovoltaic module connectors after installation, preventing loosening or detachment. The self-locking provides locking force, which more effectively resists wind vibration loads, while ensuring that the photovoltaic module connectors are stably fitted to the rectangular tube, resulting in better load-bearing capacity and structural strength. Attached Figure Description

[0022] Embodiments of the invention will be described more fully with reference to the accompanying drawings. However, the drawings are for illustration and explanation only and do not constitute a limitation on the scope of the invention.

[0023] Figure 1 This is a structural diagram of a rectangular tube in a purlin proposed in this invention;

[0024] Figure 2 This is a structural diagram of a purlin installation mechanism proposed in this invention;

[0025] Figure 3 For the present invention Figure 2 Enlarged structural diagram of section A in the middle;

[0026] Figure 4 This is an exploded view of an embodiment of a purlin proposed in this invention;

[0027] Figure 5 This is a structural diagram of a wedge-shaped block in a purlin proposed in this invention;

[0028] Figure 6 This is a front view of a wedge-shaped block in a purlin proposed in this invention;

[0029] Figure 7 This is another embodiment of the present invention. Figure 2 Enlarged structural diagram of section A in the middle;

[0030] Figure 8 This is an exploded view of another embodiment of a purlin proposed in this invention;

[0031] Figure 9 For the present invention Figure 8 Enlarged structural diagram of section B in the middle;

[0032] Figure 10 For the present invention Figure 8 Another perspective on the structure;

[0033] Figure 11 This is an exploded view of another embodiment of a purlin proposed in this invention;

[0034] Figure 12 For the present invention Figure 10 Another perspective on the structure;

[0035] Figure 13 This is a structural diagram of a photovoltaic support structure according to the present invention.

[0036] The above附图标记indicates: 1, rectangular tube; 11, mounting hole; 2, photovoltaic module connecting piece; 21, first mounting block; 22, second mounting block; 211, connecting hole; 212, limiting part; 221, wedge block; 222, inclined surface; 23, self-locking piece; 231, wedge-shaped tooth; 232, protruding part; 2321, convex point; 2322, connecting column; 233, recessed part; 2331, groove; 2332, limiting through hole; 3, main beam; 4, U-bolt; 5, driving column; 6, non-driving column; 7, driving mechanism; 8, bearing seat. Specific implementation mode

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0038] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0039] Next, the present invention will be further described in conjunction with the accompanying drawings and specific embodiments, but it is not a limitation of the present invention.

[0040] At present, the purlins used in photovoltaic tracking brackets are mostly structures with an open form, such as "channel-shaped" purlins, U-shaped purlins, C-shaped purlins, etc. Due to the existence of the opening, they are prone to deformation under the action of wind load, and even bend and twist and break, resulting in damage to the photovoltaic bracket, increasing the maintenance cost. Although there are purlins that improve this structure by adding supports inside, their cost is relatively high, and at the same time, they can only be strengthened locally. In addition, during the installation process of fixing photovoltaic modules using channel-shaped purlins, since the photovoltaic modules are all installed on the top of the channel-shaped purlins, there is no support or positioning between adjacent photovoltaic modules, and the installation is time-consuming and laborious.

[0041] Refer to Figure 1-12 , a purlin for fixedly installing a photovoltaic module on a photovoltaic bracket, comprising a rectangular tube 1, at least two groups of mounting holes 11 are opened along the length direction of the rectangular tube 1, and the mounting holes 11 are opened on the left and right side surfaces of the rectangular tube 1 and are set as through holes;

[0042] A photovoltaic module connecting piece 2 is installed in the mounting hole 11 by interference fit, and the photovoltaic module connecting piece 2 protrudes from the rectangular tube 1 after installation;

[0043] The photovoltaic module connector 2 is composed of a pair of first mounting blocks 21 and second mounting blocks 22. Both the first mounting blocks 21 and the second mounting blocks 22 are provided with self-locking components 23 that cooperate with each other to achieve a self-locking function.

[0044] By using rectangular tube 1 as the main purlin structure to replace the Z-shaped purlins in the existing technology, the problem of poor stress resistance and easy deformation of Z-shaped or other open purlins in the existing technology is solved. At the same time, the photovoltaic module connector 2 installed on the mounting hole 11 with interference fit is used to install the photovoltaic module, eliminating the need for additional fasteners and reducing installation steps. The design of the self-locking part 23 ensures the stability of the photovoltaic module connector 2 after installation, preventing loosening or falling off. The self-locking part 23 provides locking force, which more effectively resists wind vibration load.

[0045] When installing photovoltaic modules, align the holes on the photovoltaic modules with the connection holes 211. Since the photovoltaic module connectors 2 are installed on the mounting holes 11, the photovoltaic modules located on the left and right sides of the same rectangular tube 1 are supported by the rectangular tube 1, which facilitates the quick positioning and installation of the photovoltaic modules and improves the installation efficiency.

[0046] In addition, the first mounting block 21 and the second mounting block 22 are stacked one on top of the other to form the photovoltaic module connector 2. The thickness of the first mounting block 21 and the second mounting block 22 after being stacked in the vertical direction should be slightly greater than the height of the mounting hole 11, so that the photovoltaic module connector 2 can be stably engaged with the mounting hole 11 and the rectangular tube 1 by utilizing the deformation of the top and bottom surfaces of the mounting hole 11 during installation.

[0047] In some optional embodiments, both the first mounting block 21 and the second mounting block 22 are provided with connection holes 211 for mounting photovoltaic modules. After the photovoltaic module connector 2 is installed, the connection holes 211 on the first mounting block 21 and the connection holes 211 on the second mounting block 22 are aligned.

[0048] When installing photovoltaic modules, align the mounting holes and connection holes 211 on the photovoltaic module frame vertically, and fix the photovoltaic module to the top of the photovoltaic module connector 2 with bolts. In addition, to facilitate the alignment and installation of the holes, it is preferable to design the connection holes 211 as waist holes. The spacing between the connection holes 211 should fully take into account the spacing between the mounting holes on the photovoltaic module frame. The number of connection holes 211 can be flexibly set according to the model of the photovoltaic module. For example, for smaller photovoltaic modules, two sets of connection holes 211 can be used for installation, while for larger photovoltaic modules, more connection holes 211 can be opened, such as three, four or more sets, to install the photovoltaic module.

[0049] In some alternative embodiments, such as Figure 5 , Figure 6As shown, both the first mounting block 21 and the second mounting block 22 have a limiting part 212 formed at one end. The width of the limiting part 212 is greater than the width of the mounting hole 11. By setting the limiting part 212 at one end of the mounting block, the width is greater than the mounting hole 11, which prevents it from falling off. After the first mounting block 21 and the second mounting block 22 are combined, the connecting hole 211 is aligned, which makes it easy for the bolt to pass through and fix the photovoltaic module, realizing the functions of convenient installation and automatic positioning, and simplifying the alignment process of the photovoltaic module and the photovoltaic module connector 2.

[0050] Furthermore, such as Figures 3-6 As shown, both the first mounting block 21 and the second mounting block 22 are wedge-shaped blocks 221. The wedge-shaped blocks 221 are provided with inclined surfaces 222. When the first mounting block 21 and the second mounting block 22 are combined and installed on the mounting hole 11 to form the photovoltaic module connector 2, the inclined surfaces 222 on the first mounting block 21 and the second mounting block 22 are in contact. By striking the rectangular tube 1 from both sides simultaneously with a hammer, the first mounting block 21 and the second mounting block 22 are interference-fitted onto the rectangular tube 1. No additional fasteners are required when installing the photovoltaic module connector 2, reducing installation steps and costs.

[0051] Optionally, the self-locking component 23 is configured as a wedge-shaped tooth 231, which is formed on the inclined surface 222. The wedge-shaped teeth 231 on the inclined surface 222 mesh with each other to achieve self-locking. After the wedge-shaped teeth 231 on the inclined surface 222 mesh with each other and self-lock, the first mounting block 21 and the second mounting block 22 cannot move away from each other, ensuring the stability of the photovoltaic module connector 2 after installation, preventing loosening or falling off, and improving safety.

[0052] Furthermore, such as Figures 7-12 As shown, both the first mounting block 21 and the second mounting block 22 are configured as flat plate structures. The self-locking component 23 is configured as a protrusion 232 and a recess 233. Both the protrusion 232 and the recess 233 are provided on the first mounting block 21 and the second mounting block 22. After the first mounting block 21 and the second mounting block 22 are assembled, the protrusion 232 and the recess 233 engage to achieve the self-locking function.

[0053] As an optional solution, such as Figures 8-10As shown, the protrusion 232 is configured as a protrusion 2321, and the recess 233 is configured as a groove 2331. The protrusion 2321 and the groove 2331 are formed by pressing and concave processing the first mounting block 21 and the second mounting block 22 of the flat plate structure. The protrusion 2321 is the part that protrudes from the first mounting block 21 and the second mounting block 22, and the groove 2331 is the groove structure formed during the pressing and concave processing. During installation, a hammer is used to strike the rectangular tube 1 from both the left and right sides at the same time, so that the first mounting block 21 and the second mounting block 22 are connected to the rectangular tube 1 with an interference fit, and the protrusion 2321 on the first mounting block 21 is engaged into the groove 2331, thereby achieving self-locking.

[0054] Or, as Figure 11 , Figure 12 As shown, the protrusion 232 is configured as a connecting post 2322 fixedly connected to the first mounting block 21 and the second mounting block 22, and the recess 233 is configured as a limiting through hole 2332 opened on the first mounting block 21 and the second mounting block 22. During installation, the connecting post 2322 enters the limiting through hole 2332 through the deformation of the material, so as to realize the self-locking installation of the first mounting block 21 and the second mounting block 22.

[0055] like Figure 2 As shown, a purlin installation mechanism includes the purlins mentioned above, as well as purlin fasteners and a main beam 3. The purlin fasteners penetrate through a rectangular tube 1 to lock the purlins to the top of the main beam 3.

[0056] Optionally, the purlin fastener is configured as follows: Figure 2 As shown, the U-bolt 4 is provided with a through hole at the corresponding position on the rectangular tube 1 for the U-bolt 4 to pass through. For the main beam 3 with a circular or near-circular cross section, the U-bolt 4 is attached to the outer surface of the main beam 3 from bottom to top and passes through the rectangular tube 1 at the top. The nut is used to lock the top of the U-bolt 4, thereby locking the purlin to the top of the main beam 3.

[0057] In addition, for main beams 3 with rectangular or other shapes, purlins can be installed using purlin fasteners in the form of combined clamps. For example, the combined clamp structure consisting of a long screw and a fastener disclosed in Chinese Utility Model Patent No. CN220775738U has a fastener structure where the top of the fastener is close to the bottom of the main beam 3, and the long screw passes through the fastener and the rectangular tube 1 from the bottom of the fastener to fix the purlin to the top of the main beam 3.

[0058] like Figure 13As shown, a photovoltaic bracket is used to support the installation of photovoltaic modules. It includes the purlin installation mechanism described above, as well as a drive column 5, a non-drive column 6, a drive mechanism 7, a bearing seat 8, and a bearing. The bearing seat 8 is installed on the top of the non-drive column 6, and the bearing is sleeved on the outside of the main beam 3 and installed in the bearing seat 8. The drive mechanism 5 is installed on the top of the drive column 7 and connected to the main beam 3.

[0059] This application discloses a purlin, a purlin installation mechanism, and a photovoltaic support. By using a rectangular tube 1 as the main structure of the purlin to replace the zigzag or other open-section purlins in the prior art, the photovoltaic module connector 2 is connected to the rectangular tube 1 by interference fit using mounting holes 11. This effectively improves the problems of insufficient purlin load-bearing capacity and time-consuming and laborious installation of photovoltaic modules due to lack of support and positioning in the prior art. The self-locking part 23 improves the stability of the photovoltaic module connector 2 after installation, prevents loosening or falling off, and enhances safety.

[0060] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A purlin for fixing photovoltaic modules onto a photovoltaic support, characterized in that: The tube includes a rectangular tube, and at least two sets of mounting holes are provided along the length of the rectangular tube. The mounting holes are provided on the left and right sides of the rectangular tube and are configured as through holes. A photovoltaic module connector is interference-fitted onto a mounting hole, and the photovoltaic module connector protrudes from the rectangular tube after installation. The photovoltaic module connector is composed of a pair of first mounting blocks and second mounting blocks. One end of the first mounting block and the second mounting block is formed with a limiting part. The width of the limiting part is greater than the width of the mounting hole. The first mounting block and the second mounting block are provided with connection holes for mounting photovoltaic modules. The first mounting block and the second mounting block are provided with self-locking parts that cooperate with each other to achieve a self-locking function. The first mounting block and the second mounting block are inserted into the mounting holes on both sides of the rectangular tube and pass through the mounting hole on the other side. After the photovoltaic module connector is installed, the connecting holes on the first mounting block and the connecting holes on the second mounting block are aligned. The thickness of the first mounting block and the second mounting block after being stacked vertically is slightly greater than the height of the mounting holes, so that the first mounting block and the second mounting block cannot move away from each other, thus ensuring the stability of the photovoltaic module connector after installation.

2. A purlin according to claim 1, characterized in that: Both the first mounting block and the second mounting block are configured as wedge-shaped blocks, and the wedge-shaped blocks are provided with inclined surfaces.

3. A purlin according to claim 2, characterized in that: The self-locking component is configured as a wedge-shaped tooth, which is formed on an inclined surface. Self-locking is achieved by the interlocking of the wedge-shaped teeth on the inclined surface.

4. A purlin according to claim 1, characterized in that: Both the first mounting block and the second mounting block are configured as flat plate structures. The self-locking component is configured as a protrusion and a recess. Both the protrusion and the recess are provided on the first mounting block and the second mounting block. After the first mounting block and the second mounting block are assembled, the protrusion and the recess engage to achieve the self-locking function.

5. A purlin according to claim 4, characterized in that: The protrusion is configured as a raised point, and the recess is configured as a groove.

6. A purlin according to claim 4, characterized in that: The protrusion is configured as a connecting post fixedly connected to the first mounting block and the second mounting block, and the recess is configured as a limiting through hole opened on the first mounting block and the second mounting block.

7. A purlin installation mechanism, comprising a purlin as described in any one of claims 1-6, characterized in that: It also includes purlin fasteners and a main beam, wherein the purlin fasteners penetrate a rectangular tube to lock the purlins to the top of the main beam.

8. A purlin installation mechanism according to claim 7, characterized in that: The purlin fastener is provided as a U-bolt or a combination clamp.

9. A photovoltaic support bracket for supporting and installing photovoltaic modules, comprising the purlin mounting mechanism as described in claim 7, characterized in that: It also includes a drive column, a non-drive column, a drive mechanism, a bearing housing, and a bearing. The bearing housing is installed on the top of the non-drive column, the bearing is sleeved on the outside of the main beam and installed in the bearing housing, and the drive mechanism is installed on the top of the drive column and connected to the main beam.

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