A kind of prevent photovoltaic module frame screw hole mounting deformation structure

Abstract

The utility model discloses a prevent photovoltaic module frame screw hole installation deformation structure, the utility model relates to the installation field of photovoltaic module frame, including first filling piece, second filling piece, support strip, the both sides symmetry of first filling piece one end are equipped with the sticking side, the both sides symmetry of first filling piece inner chamber are equipped with stroke outer sawtooth, and the one end of second filling piece is equipped with the reduced perforation, and the both sides symmetry of second filling piece are equipped with stroke inner sawtooth. The utility model discloses a prevent photovoltaic module frame screw hole installation deformation structure, through the combination of first filling piece and second filling piece, greatly reduced the area of frame mounting hole, reduced screw rod displacement space, it can make the original recessed area around the frame collapse area greatly reduce even filling piece inner cavity is less than frame hole diameter, lead to no recess or risk reduction, reach frame bolt hole installation flat, installation does not have bending stress existence, greatly reduced the risk of installation.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module frame installation, and in particular to a structure for preventing deformation of the screw holes in the photovoltaic module frame during installation. Background Technology

[0002] As the size of solar cells and modules increases, the force that the screw holes on the frame must withstand also increases. As the demand for cost reduction continues to rise, the mounting hole surface on the frame is becoming thinner and thinner, with the distance from the hole to the edge reduced from 12mm to 9mm (hole diameter is 9mm) (the effective force-bearing area width at the edge is 4.5mm). The frame itself is under mechanical stress when the mounting holes are stamped. During installation, due to the 2-3mm wall thickness of the bracket, the area around the bolt holes in the frame concaves downwards during the pre-tightening process. This creates a cantilever beam cavity structure between the outer edge of the frame mounting hole and the inner area of ​​the bracket mounting hole. When the bolts are tightened downwards, the suspended area of ​​the frame hole deforms downwards. Assuming the contact surface of the frame is less than 0.8mm thick, the flat washer may also deform simultaneously. Furthermore, the frame will be under stress, increasing the risk of the frame holes being torn during gusts of wind, high wind pressure, or component swaying.

[0003] Therefore, it is necessary to propose a structure to prevent deformation of the screw holes on the photovoltaic module frame during installation in order to solve the above problems. Utility Model Content

[0004] The main purpose of this utility model is to provide a structure that prevents deformation of the screw holes on the frame of photovoltaic modules during installation, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A structure for preventing deformation of screw holes in the frame of a photovoltaic module includes a first filler, a second filler, and a bracket slat. The first filler is C-shaped, with fitting edges symmetrically installed on both sides of one end of the first filler, and external serrations symmetrically installed on both sides of the inner cavity of the first filler. One end of the second filler is provided with a reduction perforation, and the two sides of the second filler are symmetrically equipped with internal serrations. Reinforcing blocks are movably connected in the inner cavities of both the second filler and the first filler.

[0006] Preferably, the second filler has symmetrical upper and lower protruding limiting angles installed on both sides of one end, and a reduction through hole is provided at one end of the second filler for bolts to pass through.

[0007] Preferably, the first filler and the second filler have the same thickness, the hollow area size of the first filler is adapted to the second filler, the outer and inner serrations can engage with each other, and the outer and inner serrations are used to push inward together under mutual interaction to adjust the length of the engagement between the first filler and the second filler.

[0008] Preferably, the first filler and the second filler can engage downwards and horizontally.

[0009] Preferably, the first and second fillers are installed at the bracket purlin, where a frame is installed and a frame collapse area is formed. The first and second fillers are installed in the frame collapse area, and a gap is left between the first and second fillers and the frame collapse area after they are engaged. The gap is respectively the frame mounting hole and the bracket waist-shaped hole. The gap between the first and second fillers after they are engaged is used for the entry of bolts. The frame, bracket purlin, frame mounting hole and bracket waist-shaped hole are connected by bolts.

[0010] Preferably, a movable rod is installed at one end of the reinforcing block, a reset block is sleeved at the other end of the movable rod, a spring is wound around the outer wall of the movable rod, and one end of the spring is connected to the reset block.

[0011] Preferably, the movable rod, the reset block, and the spring are all movably connected in the inner cavities of the first filler and the second filler, and the other end of the spring is installed on the side of the inner cavity of the first filler and the second filler.

[0012] Preferably, a second adjusting component 19 is rotatably connected to the top of the inner cavity of the first filling member 1 and the second filling member 2. One end of the second adjusting component 19 is connected to a lead screw 9, and the other end of the reset block 11 is equipped with a movable cylinder 10. The lead screw 9 is threadedly connected to the inner cavity of the movable cylinder 10, and the movable cylinder 10 is movably connected to the inner cavity of the first filling member 1 and the second filling member 2.

[0013] Compared with the prior art, this utility model provides a structure to prevent deformation of the screw holes in the frame of photovoltaic modules, which has the following beneficial effects: This structure, designed to prevent deformation of the screw holes in the photovoltaic module frame, significantly reduces the area of ​​the mounting holes in the frame and decreases the displacement space of the screws through the combination of the first and second fillers. It can greatly reduce the original recessed area around the collapsed area of ​​the frame, and even make the inner cavity of the filler smaller than the diameter of the frame hole, resulting in no recess or reduced risk. This achieves flat installation of the frame bolt holes, with no bending stress during installation, and greatly reduces the risks associated with installation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the first filling component of this utility model; Figure 3 This is a schematic diagram of the structure of the second filler of this utility model; Figure 4 This is a diagram showing the engagement of the first and second filler components of this utility model. Figure 5 This is a diagram showing the maximum stroke of the first and second filler components engaging in this utility model. Figure 6 This is a schematic diagram of the structure of the reinforcing block of this utility model; Figure 7 This is an installation diagram of the first and second filler components of this utility model with the frame and the bracket purlin. Figure 8 This is a structural schematic diagram of the collapsed area of ​​the frame of this utility model.

[0015] In the diagram: 1. First filler; 2. Second filler; 3. Fitting edge; 4. Inner serration; 5. Limiting angle; 6. Reduction perforation; 7. First adjustment component; 8. Reinforcing block; 9. Lead screw; 10. Movable cylinder; 11. Reset block; 12. Movable rod; 13. Spring; 14. Frame; 15. Bracket purlin; 16. Frame mounting hole; 17. Bracket waist-shaped hole; 18. Outer serration; 19. Second adjustment component; 20. Frame collapse area. Detailed Implementation

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] Example 1: like Figures 1-8As shown, a structure for preventing deformation of screw holes in a photovoltaic module frame includes a first filler 1, a second filler 2, and a bracket shank 15. The first filler 1 is C-shaped, with symmetrical fitting edges 3 installed on both sides of one end. External serrations 18 are symmetrically installed on both sides of the inner cavity of the first filler 1. A reduction perforation 6 is opened at one end of the second filler 2, and internal serrations 4 are symmetrically installed on both sides of the second filler 2. Reinforcing blocks 8 are movably connected to the inner cavities of both the second filler 2 and the first filler 1. Vertically protruding limiting angles 5 are symmetrically installed on both sides of one end of the second filler 2. A... There is a reduced-size perforation 6 for bolt drilling. The first filler 1 and the second filler 2 have the same thickness. The hollow area size of the first filler 1 is adapted to the second filler 2. The outer serration 18 and the inner serration 4 can engage with each other. The outer serration 18 and the inner serration 4 are used to push inward together under mutual interaction to adjust the length of the engagement between the first filler 1 and the second filler 2. The first filler 1 and the second filler 2 can engage downwards and left and right. The first filler 1 and the second filler 2 are used to be installed at the bracket slat 15. A frame 14 is installed at the bracket slat 15. Fifteen frame collapse areas 20 are provided. The first filler 1 and the second filler 2 are installed in the frame collapse areas 20. After the first filler 1 and the second filler 2 are engaged, there are gaps between them and the frame collapse areas 20. These gaps are respectively the frame mounting hole 16 and the bracket waist-shaped hole 17. The gaps between the first filler 1 and the second filler 2 after engagement are used for bolt entry. The frame 14, the bracket purlin 15, the frame mounting hole 16 and the bracket waist-shaped hole 17 are connected by bolts. One end of the reinforcing block 8 is equipped with a movable rod 12, and the other end of the movable rod 12 is fitted with a reset block 11. The outer wall of the movable rod 12 is wound with a spring 13. One end of the spring 13 is connected to the reset block 11. The movable rod 12, the reset block 11, and the spring 13 are all movably connected in the inner cavities of the first filler 1 and the second filler 2. The other end of the spring 13 is installed on the side of the inner cavity of the first filler 1 and the second filler 2. The top of the inner cavity of the first filler 1 and the second filler 2 is rotatably connected to the second adjusting assembly 19. One end of the second adjusting assembly 19 is connected to the lead screw 9. The other end of the reset block 11 is installed with the movable cylinder 10. The lead screw 9 is threaded in the inner cavity of the movable cylinder 10. The movable cylinder 10 is movably connected in the inner cavities of the first filler 1 and the second filler 2.

[0018] Example 2: like Figure 2As shown, the first filler 1 is C-shaped in general. There is a row of serrated triangular structures forming the outer serrations 18 on the inner side of the upper and lower wings, and a semi-circular fitting edge 3 on the side. According to the mounting hole requirements of the bracket slats 15 and the general thickness standard of the bracket, the thickness of the first filler 1 is in the range of 2.0mm-3.5mm, which is the same as the thickness of the bracket slats 15 that directly contacts the frame 14. The surface size of the first filler 1 is in the range of 8.9mm-11.9mm, which is smaller than the collapsed area 20 of the frame. like Figure 3 As shown, the second filler 2 is basically the opposite of the first filler 1. A row of horizontal sawtooth-shaped triangular structures with inner sawtooth 4 is designed on the outer side of the upper and lower wings. There is a pair of upper and lower protruding limiting angles 5 on the left side. The shortest distance between the upper and lower limiting angles 5 is 5-7mm, generally <8mm, which is the outer diameter of the bolt. The internal opening formed by the reduced perforation 6 is the area for the bolt to be perforated later. It further reduces the empty space around the bolt. like Figure 1 As shown, the first filler 1 and the second filler 2 have the same thickness. When the first filler 1 and the second filler 2 are combined, the outer serration 18 of the first filler 1 engages with the inner serration 4 of the second filler 2. The two interact and push inward together. The length of the interlocking between the first filler 1 and the second filler 2 is adjusted according to the length of the collapsed area 20 of the border, or as shown in the figure. Figure 4 As shown, based on the length of the collapsed area 20 of the border, the first filler 1 and the second filler 2 are directly inserted vertically, and the length is subsequently adjusted according to the collapsed area 20 of the border. Figure 5 As shown, at this time, the first filler 1 and the second filler 2 can only have gap displacement and cannot continue to shorten the distance.

[0019] Example 3: like Figures 1-8 As shown, first, align the mounting holes of frame 14 with the collapsed area 20 of the frame, forming a cross-shaped combination of upper and lower holes. Place a flat washer on the upper contact surface of the mounting holes of frame 14 to increase the contact area, reduce the force on the mounting holes of frame 14, and reduce the direct force of the high-hardness bolt on the low-hardness frame. Pass through the bolt, and from the bottom up through the bolt thread, place the combination of the first filler 1 and the second filler 2 according to the collapsed area 20 of the frame, which greatly reduces the area of ​​the mounting holes of frame 14 and reduces the displacement space of the bolt. Finally, place the flat washer, spring washer, and nut to pre-tighten the whole set of fasteners. During the bolt pre-tightening process, due to the presence of the first filler 1 and the second filler 2, the original recessed area around the collapsed area 20 of the frame is greatly reduced, and even the inner cavity of the filler is smaller than the diameter of the frame hole, resulting in no recess or reduced risk, achieving flat installation of the frame bolt holes, no bending stress during installation, and greatly reducing the risk of installation. When the spring 13 is in its normal state, it can push the reinforcing block 8 outward. When in use, the second adjustment component 19 can be rotated so that the lead screw 9 can be threadedly connected to the movable cylinder 10. Based on this, the reinforcing block 8 can be moved by the reset block 11 and the movable rod 12, so that the reinforcing block 8 can extend to the outside of the first filler 1 and the second filler 2 and fit against the outer wall of the bolt, which can further improve the fastening effect.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A structure for preventing deformation of screw holes in the frame of a photovoltaic module during installation, comprising a first filler (1), a second filler (2), and a bracket purlin (15), characterized in that: The first filler (1) is "C" shaped, and fitting edges (3) are symmetrically installed on both sides of one end of the first filler (1). External serrations (18) are symmetrically installed on both sides of the inner cavity of the first filler (1). One end of the second filler (2) is provided with a shrinkage perforation (6), and the two sides of the second filler (2) are symmetrically equipped with internal serrations (4). Reinforcing blocks (8) are movably connected in the inner cavity of both the second filler (2) and the first filler (1).

2. The structure for preventing deformation of screw holes in photovoltaic module frames according to claim 1, characterized in that: The second filler (2) has symmetrical upper and lower protruding limiting angles (5) installed on both sides of one end. The second filler (2) has a shrinkage hole (6) at one end, which is used for bolt penetration.

3. The structure for preventing deformation of screw holes in photovoltaic module frames according to claim 1, characterized in that: The first filler (1) and the second filler (2) have the same thickness. The size of the hollow area of ​​the first filler (1) is adapted to that of the second filler (2). The outer serration (18) and the inner serration (4) can engage with each other. The outer serration (18) and the inner serration (4) are used to push inward together under mutual interaction, and are used to adjust the length of the engagement between the first filler (1) and the second filler (2).

4. The structure for preventing deformation of screw holes in photovoltaic module frames according to claim 1, characterized in that: The first filler (1) and the second filler (2) can be engaged downwards and left and right.

5. The structure for preventing deformation of screw holes in photovoltaic module frames according to claim 4, characterized in that: The first filler (1) and the second filler (2) are used to be installed at the bracket slat (15). A frame (14) is installed at the bracket slat (15). A frame collapse area (20) is opened at the bracket slat (15). The first filler (1) and the second filler (2) are installed in the frame collapse area (20). After the first filler (1) and the second filler (2) are engaged, there is a gap between them and the frame collapse area (20). The gaps are respectively the frame mounting hole (16) and the bracket waist-shaped hole (17). The gap between the first filler (1) and the second filler (2) after engagement is used for the entry of bolts. The frame (14), the bracket slat (15), the frame mounting hole (16) and the bracket waist-shaped hole (17) are connected by bolts.

6. The structure for preventing deformation of screw holes in photovoltaic module frames according to claim 1, characterized in that: One end of the reinforcing block (8) is equipped with a movable rod (12), and the other end of the movable rod (12) is fitted with a reset block (11). A spring (13) is wound around the outer wall of the movable rod (12), and one end of the spring (13) is connected to the reset block (11).

7. The structure for preventing deformation of screw holes in photovoltaic module frames according to claim 6, characterized in that: The movable rod (12), the reset block (11) and the spring (13) are all movably connected in the inner cavity of the first filler (1) and the second filler (2), and the other end of the spring (13) is installed on the side of the inner cavity of the first filler (1) and the second filler (2).

8. The structure for preventing deformation of screw holes in photovoltaic module frames according to claim 7, characterized in that: The top of the inner cavity of the first filler (1) and the second filler (2) is rotatably connected to a second adjustment component (19). One end of the second adjustment component (19) is connected to a lead screw (9). The other end of the reset block (11) is equipped with a movable cylinder (10). The lead screw (9) is threadedly connected to the inner cavity of the movable cylinder (10). The movable cylinder (10) is movably connected to the inner cavity of the first filler (1) and the second filler (2).

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