Integrated short purline and photovoltaic mounting rack

By integrating short purlins with multi-sided contact support and locking structure, the problem of cumbersome installation steps in photovoltaic module installation is solved, achieving efficient and stable photovoltaic module fixing and reducing production costs.

CN223680997UActive Publication Date: 2025-12-16CTG JIANGSU ENERGY INVESTMENT CO LTD +2
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Patent Information

Application Number
CN202423256842.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-29
Publication Date
2025-12-16
Estimated Expiration
2034-12-29

AI Technical Summary

Technical Problem

In the current photovoltaic module installation process, the installation steps for purlins and purlin reinforcements are cumbersome and difficult, resulting in low installation efficiency.

Method used

An integrated short purlin was designed, combining the purlin and the reinforcing member into one part. It adopts a multi-sided contact support and spindle, combined with an angle design and multiple locking structures to achieve stable fixation of the purlin and spindle. The quick-installation clamp and pre-positioning protrusion improve installation efficiency.

Benefits of technology

It simplifies the installation process, improves installation efficiency, enhances the connection stability and deformation resistance of the structure, and reduces production costs and material usage.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of photovoltaic assembly installation, in particular to an integrated short purline which comprises a purline provided with a supporting plate used for supporting the bottom end of an assembly and at least one side wall with one end connected with the supporting plate. The other end, away from the supporting plate, of the side wall is provided with a lower positioning groove matched with the cross section of the main shaft in shape, the side wall extends in the length direction of the main shaft and forms a certain thickness, and the purline is provided with a first auxiliary positioning structure used for being matched with the first locking structure to fix the purline and the main shaft. The purline is provided with a second auxiliary positioning structure used for being matched with the second locking structure to fix the purline and the assembly. According to the utility model, the functions of the purline reinforcer and the purline are integrated on one part, and an integrated structural design is adopted, so that the number of related parts of the purline can be reduced, the mounting efficiency is improved, unnecessary materials can be saved, the production process is simplified, and the production cost is reduced.
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Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module installation technology, and in particular to an integrated short purlin and photovoltaic mounting frame. Background Technology

[0002] As attached Figure 1 As shown, existing purlin installation technology requires the use of purlin reinforcement components. The purlin reinforcement component is located below, and the purlin is located above. The function of the purlin reinforcement component is to fit tightly against the outline of the main shaft to provide support for the purlin. The function of the purlin is to install photovoltaic modules. The two are connected by U-bolts. During the installation process, one worker needs to keep the purlin and purlin reinforcement component in close contact and prevent relative movement, while another worker uses U-bolts to connect the purlin and purlin reinforcement component to the main shaft. Finally, the modules are installed. The installation steps are cumbersome and difficult, which is not conducive to the rapid mass installation of modules. Utility Model Content

[0003] In view of this, the purpose of this utility model is to propose an integrated short purlin to solve the technical problem of low installation efficiency of existing purlins.

[0004] Based on the above objectives, this utility model provides an integrated short purlin, including a purlin having a support plate for supporting the bottom end of an assembly, and at least one sidewall connected at one end to the support plate. The sidewall has a lower positioning groove matching the cross-sectional shape of the main shaft at its other end away from the support plate. The sidewall extends along the length direction of the main shaft and forms a certain thickness. The purlin is provided with a first auxiliary positioning structure for fixing the purlin to the main shaft in conjunction with a first locking structure. The purlin is provided with a second auxiliary positioning structure for fixing the purlin to the assembly in conjunction with a second locking structure.

[0005] As a preferred embodiment of this utility model, the side wall of the purlin is provided with an extension plate for increasing the contact surface between the lower positioning groove and the main shaft, and the extension plate has a plurality of extension plates arranged in a ring array about the center of the lower positioning groove.

[0006] As a preferred embodiment of this utility model, the sidewall of the purlin has a bend along its length, thereby forming a bend on the sidewall.

[0007] As a preferred embodiment of this utility model, the first auxiliary positioning structure consists of at least two first positioning holes formed on the purlin support plate.

[0008] As a preferred embodiment of this utility model, the first locking structure includes:

[0009] U-bolts and U-bolt fastening nuts that match the U-bolts, wherein the U-bolts match the first positioning hole;

[0010] The purlin fixing part is provided with an upper positioning groove matched with the cross-sectional shape of the main shaft, and is provided with at least two second positioning holes matched with the U-shaped bolt, and the purlin, the U-shaped bolt and the purlin fixing part jointly form a clamping space for clamping the main shaft.

[0011] As a preferred technical scheme of the utility model, the second auxiliary positioning structure is a first component mounting hole opened on the purlin support plate, the second locking structure comprises a positioning bolt and a positioning nut matched with the positioning bolt, the first component mounting hole is used for cooperating with the positioning bolt, and the positioning bolt is matched with a second component mounting hole opened on the surface of the component.

[0012] As a preferred technical scheme of the utility model, the second auxiliary positioning structure is a quick mounting clamp mounting groove opened on the side wall of the purlin, and the second locking structure is a quick mounting clamp, and the quick mounting clamp mounting groove is used for mounting the quick mounting clamp.

[0013] As a preferred technical scheme of the utility model, the support plate of the purlin is provided with a pre-positioning convex bump, and the pre-positioning convex bump is matched with a waist-shaped hole opened on the surface of the component.

[0014] As a preferred technical scheme of the utility model, the purlin has two side walls, and the two side walls are symmetrically arranged about the support plate, and the side wall and the support plate are integrally designed.

[0015] Based on the above purpose, the utility model also provides a kind of photovoltaic mounting frame, including component and main shaft and integral type short purlin, wherein the main shaft is the cylinder of multiple edges, correspondingly, the lower positioning groove is the multiple edge groove matched with the edge of cylinder, by the multiple edge groove and the edge of cylinder mutual adhesion, to prevent the rotation of the purlin relative to the axis of main shaft.

[0016] The utility model has the advantages of:

[0017] 1. First function integration, process integration, the function of purlin reinforcement and purlin two parts is integrated into one part, adopts integral structure design, not only can reduce the number of purlin related parts, to improve installation efficiency, but also can save unnecessary material, simplify production process, reduce production cost;

[0018] 2. Secondly, the lower part of purlin and the main shaft are in multiple edge contact support, so that the purlin and the main shaft are in multiple edge contact with the contour, to ensure that the main shaft supports and fixes the purlin more stably, which is beneficial to improve the connection overturning resistance of structure;

[0019] 3. Thirdly, the purlin side angle design increases the overall rigidity of purlin and improves the deformation resistance;

[0020] 4. In addition, the upper purlin can be positioned by positioning bolts, positioning nuts or quick mounting clamps, cooperating with the predetermined positioning convex to realize the quick installation between the assembly and the purlin, and since the installation direction of the bolt is changed, the technical problem that the threaded end of the U-shaped bolt is located in the gap between the assemblies when the U-shaped bolt is installed from bottom to top and is insufficient to accommodate the wrench operation can be overcome, and the installation efficiency is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0022] Figure 1 It is a structural schematic diagram of a photovoltaic mounting rack in the prior art.

[0023] Figure 2 It is a front view structural schematic diagram of the purlin of the first embodiment of the present application.

[0024] Figure 3 It is a side view structural schematic diagram of the purlin of the first embodiment of the present application.

[0025] Figure 4 It is a top view structural schematic diagram of the purlin of the first embodiment of the present application.

[0026] Figure 5 It is a three-dimensional structural schematic diagram of the purlin of the first embodiment of the present application.

[0027] Figure 6 It is a mounting structural schematic diagram of the purlin of the first embodiment of the present application.

[0028] Figure 7 It is a front view structural schematic diagram of a photovoltaic mounting rack of the present application.

[0029] Figure 8 It is a front view structural schematic diagram of a photovoltaic mounting rack of the present application. Figure 7 It is an enlarged structural schematic diagram of position A in the present application.

[0030] Figure 9 It is a three-dimensional structural schematic diagram of a photovoltaic mounting rack of the present application.

[0031] Figure 10 It is a three-dimensional structural schematic diagram of the purlin of the second embodiment of the present application.

[0032] Figure 11 It is a mounting structural schematic diagram of a quick mounting clamp in the prior art.

[0033] Figure 12Figure 1 is a schematic diagram of a fast mounting clamp installation structure in the prior art;

[0034] Figure 13 Figure 1 is a schematic diagram of a fast mounting clamp installation structure in the prior art; Figure 9 Figure 1 is a schematic diagram of a fast mounting clamp installation structure in the prior art;

[0035] In the figure, the marks are: 1, purlin; 101, support plate; 102, side wall; 2, first assembly mounting hole; 3, lower positioning groove; 4, extension plate; 5, first positioning hole; 6, folded edge; 7, U-shaped bolt; 8, U-shaped bolt fastening nut; 9, purlin fixing piece; 10, upper positioning groove; 11, second positioning hole; 12, assembly; 13, second assembly mounting hole; 14, positioning bolt; 15, positioning nut; 16, main shaft; 17, limiting hole; 18, fast mounting clamp installation groove; 19, pre-positioning convex bump. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model is further described in detail below in combination with specific embodiments.

[0037] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the utility model should be understood as the usual meaning by those skilled in the art to which the utility model belongs. The "first", "second" and similar words used in the utility model do not represent any order, quantity or importance, but are only used to distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the words cover the elements or objects listed after the words and their equivalents, without excluding other elements or objects. "Connection" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationship, which may change accordingly when the absolute position of the described object changes.

[0038] As shown in Figure 2 , Figure 3 , Figure 4 and Figure 5 , the integral short purlin comprises a purlin 1, the purlin 1 is provided with a support plate 101 for supporting the bottom end of the assembly 12, and at least one side wall 102 connected to the support plate 101 at one end, the side wall 102 is provided with a lower positioning groove 3 matching the cross-sectional shape of the main shaft 16 at the other end away from the support plate 101, the side wall 102 extends to the length direction of the main shaft 16 and forms a certain thickness, the purlin 1 is provided with a first auxiliary positioning structure for cooperating with the first locking structure to fix the purlin 1 with the main shaft 16, and the purlin 1 is provided with a second auxiliary positioning structure for cooperating with the second locking structure to fix the purlin 1 with the assembly 12.

[0039] The above technical solution can improve the installation efficiency. Since the purline 1 and the reinforcing member are integrated with each other, they are regarded as a whole, so that the time for installing the purline and the reinforcing member can be saved during the installation process. During use, the lower positioning groove 3 at the lower end of the side wall 102 of the purline 1 is attached to the outer contour of the main shaft 16, and the first locking structure is matched with the first auxiliary positioning structure, so that the purline 1 and the main shaft 16 can be fixed. Then, the second locking structure is matched with the second auxiliary positioning structure, so that the purline 1 and the assembly 12 can be fixed, the installation is completed, and the disassembly is relatively convenient.

[0040] As shown in Figure 5 and Figure 6 , in the present embodiment, the side wall 102 of the purline 1 is provided with an extension plate 4 for increasing the contact surface of the lower positioning groove 3 with the main shaft 16. The extension plate 4 has a plurality of and is arranged in a circular array about the center of the lower positioning groove 3.

[0041] The above technical solution can improve the connection stability of the purline 1 and the main shaft 16. By providing the extension plate 4, the extension plate 4 can be attached to the outer contour of the main shaft 16, so as to ensure that the main shaft 16 can stably support and fix the purline 1.

[0042] As shown in Figure 5 , in the present embodiment, the side wall 102 of the purline 1 has a folding angle along the length direction thereof, so that a folding edge 6 is formed on the side wall 102.

[0043] The above technical solution can improve the anti-deformation ability of the purline 1. By the folding angle design, the overall rigidity of the purline 1 is increased.

[0044] As shown in Figure 5 and Figure 6 , in the present embodiment, the first auxiliary positioning structure is at least two first positioning holes 5 opened on the support plate 101 of the purline 1; the first locking structure includes a U-shaped bolt 7 and a U-shaped bolt fastening nut 8 matched with the U-shaped bolt 7, and the U-shaped bolt 7 is matched with the first positioning hole 5; a purline fixing member 9 provided with an upper positioning groove 10 matched with the cross-sectional shape of the main shaft 16, the purline fixing member 9 is provided with at least two second positioning holes 11 matched with the U-shaped bolt 7, and the purline 1, the U-shaped bolt 7 and the purline fixing member 9 jointly form a clamping space for clamping the main shaft 16.

[0045] The above technical scheme can install the purlin 1 on the main shaft 16, and in use, the lower positioning groove 3 at the lower end of the purlin 1 is first attached to the outer contour of the main shaft 16, the U-shaped bolt 7 is inserted from top to bottom and penetrates the first positioning hole 5, then the purlin fixing part 9 has one side with the upper positioning groove 10 attached to the main shaft 16, and the U-shaped bolt 7 is ensured to penetrate the second positioning hole 11 on the surface of the purlin fixing part 9, then the U-shaped bolt fastening nut 8 is used to screw the U-shaped bolt 7, but not tightened, so as to facilitate subsequent fine adjustment of the position of the purlin 1 on the main shaft 16, and the required purlins 1 are installed in batches on the main shaft 16 according to the above steps.

[0046] As shown in Figure 7 , Figure 8 and Figure 9 and Figure 13 , in the present embodiment, the second auxiliary positioning structure is the first component mounting hole 2 opened on the support plate 101 of the purlin 1, and the second locking structure includes the positioning bolt 14 and the positioning nut 15 matched with the positioning bolt 14, the first component mounting hole 2 is used to cooperate with the positioning bolt 14, and the positioning bolt 14 cooperates with the second component mounting hole 13 opened on the surface of the component 12;

[0047] The above technical scheme can install the component 12 in batches on the support plate 101 of the purlin 1, and in use, the purlin 1 preliminarily fixed in the above step is slid along the main shaft 16 to the required position, the second component mounting hole 13 on the surface of the component 12 is ensured to be aligned and overlapped with the first component mounting hole 2 on the support plate 101, then the positioning bolt 14 is sequentially penetrated from top to bottom through the second component mounting hole 13 and the first component mounting hole 2, next the positioning bolt 14 is tightened from below, and then the U-shaped bolt 7 of the purlin 1 connected with the component 12 is tightened, generally at least two purlins 1 are required for one component 12 to be stably supported, and two groups of first component mounting holes 2 are opened on each purlin 1, so that one purlin 1 can simultaneously fix two components 12 at most, and the subsequent component 12 can be first loaded on the front purlin 1 during installation, then another purlin 1 on the same main shaft 16 is slid to cooperate with the front purlin 1 which has been fixed to install the next component 12, and the installation efficiency is high;

[0048] It should be noted that the installation mode of the U-shaped bolt 7 is from top to bottom, that is, the threaded end of the U-shaped bolt 7 faces downward, and this installation mode can avoid that the U-shaped bolt 7 cannot be tightened due to too small spacing between the components 12, and in fact, Figure 1As shown, when the U-shaped bolt 7 is installed from bottom to top, the threaded end of the U-shaped bolt 7 is located in the gap between the assembly 12 and the assembly 12, which is not enough to accommodate the wrench operation, so in order to facilitate the tightening of the U-shaped bolt 7, it is necessary to lock the U-shaped bolt 7 before installing the assembly 12, otherwise it is not possible to tighten the U-shaped bolt 7 after installing the assembly 12, but once the U-shaped bolt 7 is locked, it means that the purlin 1 cannot slide along the main shaft 16, making it difficult to implement the subsequent batch installation steps.

[0049] As shown in Figure 10 , Figure 11 and Figure 12 , in this embodiment, the second auxiliary positioning structure is a quick-mount clamp mounting groove 18 opened on the side wall 102 of the purlin 1, and the second locking structure is a quick-mount clamp, and the quick-mount clamp mounting groove 18 is used to install the quick-mount clamp;

[0050] The above technical scheme can more efficiently fix the assembly 12 and the purlin 1 to each other. The quick-mount clamp referred to here refers to the technical scheme disclosed in the Chinese utility model patent application No. CN117040407A entitled “Clamp and photovoltaic mounting rack”. The quick-mount clamp is provided with a clamping opening, and the front end of the lower wall of the clamping opening is provided with a lower limiting tooth. Therefore, after the lower limiting tooth is inserted into the quick-mount clamp mounting groove 18 of the purlin 1, the clamping opening will simultaneously bite the upper end face of the assembly 12 and the lower end face of the support plate 101 of the purlin 1. Under the knocking action of the worker, the quick-mount clamp will move, and the lower limiting tooth will be inserted into the limiting hole 17 on the surface of the support plate 101 of the purlin 1, thereby locking the quick-mount clamp and preventing it from falling off.

[0051] As shown in Figure 10 , in this embodiment, the support plate 101 of the purlin 1 is provided with a pre-positioning protrusion 19, and the pre-positioning protrusion 19 cooperates with the waist-shaped hole opened on the surface of the assembly 12;

[0052] The above technical scheme can achieve pre-positioning between the assembly 12 and the support plate 101 of the purlin 1. In use, the waist-shaped hole on the surface of the assembly 12 is aligned with the pre-positioning protrusion 19 on the preliminarily fixed support plate 101 of the purlin 1 and is embedded, so that the assembly 12 and the purlin 1 are pre-positioned, which is conducive to subsequent fixation using positioning bolts 14, positioning nuts 15 or quick-mount clamps.

[0053] As shown in Figure 5 and Figure 10 , in this embodiment, the purlin 1 has two side walls 102, and the two side walls 102 are symmetrically arranged about the support plate 101, and the side wall 102 is designed in an integrated manner with the support plate 101;

[0054] Adopt above technical scheme can ensure the connection between purlin 1 and main shaft 16 is more stable, save material, when only setting one side wall 102, in order to guarantee the connection between purlin 1 and main shaft 16 is stable, the thickness of side wall 102 needs to be set very big, not only weight is heavy, also waste material.

[0055] As shown in Figure 9 The utility model also provides a photovoltaic mounting frame, including subassembly 12 and main shaft 16 and integral type short purlin, wherein, main shaft 16 is the cylinder of multiple edges, correspondingly, lower positioning groove 3 is the multiple edge groove matched with the edge of cylinder, through the mutual adhesion of multiple edge groove and the edge of cylinder, the rotation of purlin 1 relative to the axis of main shaft 16 is prevented;

[0056] Adopt above technical scheme can facilitate the installation of photovoltaic panel, how to install has been mentioned in the foregoing, and it will not be repeated here.

[0057] Working principle: when using, first, the lower positioning groove 3 of the lower end of purlin 1 is adhered to the outer contour of main shaft 16, the U-shaped bolt 7 is inserted from top to bottom and penetrates the first positioning hole 5, then the side with upper positioning groove 10 of purlin fixing part 9 is adhered to main shaft 16, and it is ensured that the U-shaped bolt 7 penetrates the second positioning hole 11 on the surface of purlin fixing part 9, then the U-shaped bolt fastening nut 8 is used to screw the U-shaped bolt 7, but it is not tightened, so as to facilitate the subsequent fine adjustment of the position of purlin 1 on main shaft 16, and the required purlin 1 is installed on main shaft 16 in batches according to the above steps;

[0058] Then, the waist-shaped hole on the surface of subassembly 12 is embedded into the predetermined positioning bump 19 on the support plate 101 of the preliminarily fixed purlin 1, so that the subassembly 12 and the purlin 1 are preliminarily positioned, the preliminarily fixed purlin 1 is slid along main shaft 16 to the required position, it is ensured that the second subassembly mounting hole 13 on the surface of subassembly 12 is aligned and overlapped with the first subassembly mounting hole 2 on the support plate 101, then the positioning bolt 14 is sequentially penetrated into the second subassembly mounting hole 13 and the first subassembly mounting hole 2 from top to bottom, next, the positioning bolt 14 is tightened from below, and then the U-shaped bolt 7 of the purlin 1 connected with the subassembly 12 is tightened, generally, at least two purlins 1 are required to stably support one subassembly 12, and two groups of first subassembly mounting holes 2 are formed in each purlin 1, so that one purlin 1 can simultaneously fix two subassemblies 12 at most, and the subsequent subassembly 12 can be first loaded on the front purlin 1 during installation, then the other purlin 1 on the same main shaft 16 is slid to enable the other purlin 1 to cooperate with the front fixed purlin 1 to install the next subassembly 12, and the installation efficiency is high.

[0059] It should be understood by those of ordinary skill in the art that the discussion of any of the above embodiments is merely exemplary and is not intended to suggest that the scope of the present application (including the claims) is limited to these examples; the above embodiments or technical features among different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in detail for the sake of brevity.

[0060] The present application is intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the appended claims. Accordingly, any and all such alternatives, modifications, equivalents, improvements and the like are intended to be encompassed by the present application.

Claims

1. An integrated short purlin, characterized in that: The assembly includes a purlin (1), which has a support plate (101) for supporting the bottom end of the component (12) and at least one sidewall (102) connected to the support plate (101) at one end. The sidewall (102) has a lower positioning groove (3) at its other end away from the support plate (101) that matches the cross-sectional shape of the main shaft (16). The sidewall (102) extends along the length of the main shaft (16) and has a certain thickness. The purlin (1) is provided with a first auxiliary positioning structure for fixing the purlin (1) to the main shaft (16) in conjunction with a first locking structure. The purlin (1) is provided with a second auxiliary positioning structure for fixing the purlin (1) to the component (12) in conjunction with a second locking structure.

2. The integrated short purlin according to claim 1, characterized in that, The sidewall (102) of the purlin (1) is provided with an extension plate (4) for increasing the contact surface between the lower positioning groove (3) and the main shaft (16). The extension plate (4) has a plurality of extension plates arranged in a circular array about the center of the lower positioning groove (3).

3. The integrated short purlin according to claim 1, characterized in that, The sidewall (102) of the purlin (1) has a bend along its length, thereby forming a bend (6) on the sidewall (102).

4. The integrated short purlin according to claim 1, characterized in that, The first auxiliary positioning structure consists of at least two first positioning holes (5) on the purlin (1) support plate (101).

5. The integrated short purlin according to claim 4, characterized in that, The first locking structure includes: U-bolt (7) and U-bolt fastening nut (8) that matches the U-bolt (7), wherein the U-bolt (7) matches the first positioning hole (5); A purlin fixing member (9) is provided with an upper positioning groove (10) that matches the cross-sectional shape of the spindle (16). The purlin fixing member (9) is provided with at least two second positioning holes (11) that match the U-bolts (7). The purlin (1), the U-bolts (7) and the purlin fixing member (9) together form a clamping space for clamping the spindle (16).

6. The integrated short purlin according to claim 1, characterized in that, The second auxiliary positioning structure is a first component mounting hole (2) opened on the purlin (1) support plate (101). The second locking structure includes a positioning bolt (14) and a positioning nut (15) that matches the positioning bolt (14). The first component mounting hole (2) is used to cooperate with the positioning bolt (14). The positioning bolt (14) cooperates with the second component mounting hole (13) opened on the surface of the component (12).

7. The integrated short purlin according to claim 1, characterized in that, The second auxiliary positioning structure is a quick-release clamp mounting groove (18) opened on the side wall (102) of the purlin (1), and the second locking structure is a quick-release clamp. The quick-release clamp mounting groove (18) is used to install the quick-release clamp.

8. The integrated short purlin according to claim 7, characterized in that, The purlin (1) has a prepositioning protrusion (19) on its support plate (101), which is in conjunction with a waist-shaped hole on the surface of the component (12).

9. The integrated short purlin according to claim 1, characterized in that, The purlin (1) has two side walls (102), which are symmetrically arranged about the support plate (101). The side walls (102) and the support plate (101) are integrated into one piece.

10. A photovoltaic mounting bracket, characterized in that, Includes component (12) and main shaft (16) and the integral short purlin as described in any one of claims 1-9, wherein the main shaft (16) is a multi-sided column, and correspondingly, the lower positioning groove (3) is a polygonal groove that matches the edges of the column, so as to prevent the purlin (1) from rotating relative to the axis of the main shaft (16) by means of the polygonal groove and the edges of the column.

Citation Information

Patent Citations

  • Clamp and photovoltaic mounting rack

    CN117040407A