Tension test tool for photovoltaic module junction box

Abstract

The utility model discloses a photovoltaic module junction box tension test tool, which comprises a main clamping plate and a secondary clamping plate, a first clamping block is connected above the main clamping plate, a second clamping block corresponding to the first clamping block is connected onto the secondary clamping plate, a guide block is connected above the main clamping plate and located on one side of the first clamping block, and the guide block is connected onto the secondary clamping plate. Hooks are connected to the four side edges of the guide block and the side face, away from the first clamping block, of the guide block, and the auxiliary clamping plate and the main clamping plate are connected in the mode that screws are matched with butterfly nuts. According to the utility model, the screw rod is matched with the butterfly nut to lock the main clamping plate and the secondary clamping plate, so that the first clamping block and the second clamping block are matched to clamp the junction box, the tension test of the junction box can be realized by pulling the hook on the guide block, and the junction box tension test device has the characteristics of simple structure and convenience in fixing the junction box; and no torsion is generated in the fixing process of the junction box, so that the reliability of a test result is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic module junction box tensile testing technology, specifically relating to a photovoltaic module junction box tensile testing fixture. Background Technology

[0002] With the development of photovoltaic modules, high-power sliced ​​solar cells have attracted much attention. At the same time, the size of the junction box has been greatly reduced, and the contact area with the back glass (backsheet) has been reduced from the original 100cm². 2 Reduced to the current 15cm 2 Therefore, the adhesive force between the junction box and the back glass (back panel) is greatly reduced, making the MQT14.1 junction box tensile test in IEC61215-2:2021 increasingly important.

[0003] However, current fixtures are prone to generating torque while clamping the junction box, leading to uneven stress on the junction box and affecting test results. Secondly, the fixtures are cumbersome to tighten and difficult to operate. Furthermore, existing fixtures are bulky, heavy, and inconvenient to adjust, significantly impacting testing efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a tensile testing fixture for photovoltaic module junction boxes to solve the problems mentioned in the background art. The photovoltaic module junction box tensile testing fixture provided by this invention is characterized by its ability to quickly and easily tighten the junction box, thus improving testing efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tensile testing fixture for a photovoltaic module junction box, comprising a main clamping plate and a secondary clamping plate, wherein a first clamping block is connected above the main clamping plate, a second clamping block corresponding to the first clamping block is connected to the secondary clamping plate, a guide block is connected above the main clamping plate on one side of the first clamping block, and hooks are connected to the four sides of the guide block and the side away from the first clamping block, and the secondary clamping plate and the main clamping plate are connected by a screw and a wing nut.

[0006] To achieve the connection between the hook and the guide block, threaded holes are provided on all four sides of the guide block and on the side away from the first clamping block, and the hook engages with the threaded holes.

[0007] To facilitate quick locking of the secondary clamping plate, one end of the screw is rotatably connected to the main clamping plate, and the secondary clamping plate is provided with a U-shaped groove corresponding to the screw.

[0008] In order to arrange the three screws in a triangle so that the force on the secondary clamping plate is more even and thus ensures the stability of clamping the junction box, three screws are provided in total, and the three screws are respectively set on the three sides of the main clamping plate.

[0009] In order to guide the installation of the secondary clamping plate, so that the secondary clamping plate can be clamped vertically on the junction box, better protect the main structure of the junction box, and avoid problems such as appearance damage or even deformation of the junction box leading to functional impairment, the secondary clamping plate is further provided with guide grooves corresponding to the guide blocks.

[0010] To avoid damaging the cables on the junction box, both the first and second clamping blocks are provided with clearance grooves.

[0011] To accurately position the junction box and prevent inaccurate positioning and angular deviations, a positioning block is further connected to the end of the first clamping block. The secondary clamping plate has a mating groove corresponding to the positioning block.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model uses a screw and a wing nut to lock the main clamping plate and the secondary clamping plate together, thereby clamping the junction box by the cooperation of the first clamping block and the second clamping block. The tensile force test of the junction box can be achieved by pulling the hook on the guide block. It has the characteristics of simple structure and convenient fixing of junction box. No torque is generated during the fixing of junction box, which ensures the reliability of test results.

[0014] 2. This utility model uses a screw and a wing nut to lock the main clamping plate and the secondary clamping plate together, which can be applied to junction boxes of different sizes;

[0015] 3. Hooks are connected to the four sides of the guide block and the side away from the first clamping block. The test can be completed in five directions at one time when the component is stationary. The component does not need to be rotated. This reduces the time consumed by the operator during the test and improves the test efficiency.

[0016] 4. One end of the screw of this utility model is rotatably connected to the main clamping plate, and the secondary clamping plate is provided with a U-shaped groove corresponding to the screw, which facilitates the quick locking of the secondary clamping plate;

[0017] 5. This utility model guides the installation of the secondary clamping plate by using a guide block and a guide groove, so that the secondary clamping plate can be clamped vertically on the junction box, which better protects the main structure of the junction box and avoids problems such as appearance damage or even deformation of the junction box leading to functional impairment.

[0018] 6. This utility model uses a positioning block to position the junction box, thus avoiding problems such as inaccurate positioning and angle deviation;

[0019] 7. This utility model has three screws, which are respectively set on the three sides of the main clamping plate. The three screws are arranged in a triangle, which makes the force on the secondary clamping plate more even, thereby ensuring the stability of the junction box clamping. Attached Figure Description

[0020] Figure 1 and 2 All of these are schematic diagrams of the structure of this utility model;

[0021] Figure 3 This is a structural schematic diagram of the main clamping plate and guide block of this utility model;

[0022] Figure 4 This is a schematic diagram of the secondary clamping plate of this utility model.

[0023] In the diagram: 1. Main clamping plate; 2. First clamping block; 3. Guide block; 31. Threaded hole; 4. Second clamping block; 5. Wing nut; 6. Secondary clamping plate; 61. U-shaped groove; 62. Guide groove; 63. Mating groove; 7. Hook; 8. Screw; 9. Positioning block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] Please see Figures 1-4 The present invention provides the following technical solution: a tensile testing fixture for a photovoltaic module junction box, comprising a main clamping plate 1 and a secondary clamping plate 6, wherein a first clamping block 2 is connected above the main clamping plate 1, a second clamping block 4 corresponding to the first clamping block 2 is connected on the secondary clamping plate 6, a guide block 3 is connected above the main clamping plate 1 on one side of the first clamping block 2, and hooks 7 are connected to the four sides of the guide block 3 and the side away from the first clamping block 2, and the secondary clamping plate 6 is connected to the main clamping plate 1 by a screw 8 and a wing nut 5.

[0027] By adopting the above technical solution, this utility model uses a screw 8 and a wing nut 5 to lock the main clamping plate 1 and the secondary clamping plate 6 together, thereby clamping the junction box by the cooperation of the first clamping block 2 and the second clamping block 4. The tensile force test of the junction box can be achieved by pulling the hook 7 on the guide block 3. It has the characteristics of simple structure and convenient fixing of the junction box. No torque is generated during the fixing of the junction box, ensuring the reliability of the test results. This utility model uses a screw 8 and a wing nut 5 to lock the main clamping plate 1 and the secondary clamping plate 6 together, which can be applied to junction boxes of different sizes. The four sides of the guide block 3 and the side away from the first clamping block 2 are all connected to hooks 7, which can complete the test in five directions at one time when the component is stationary, without the need to rotate the component, reducing the time consumed by the operator during the test and improving the test efficiency.

[0028] Specifically, threaded holes 31 are provided on the four sides of the guide block 3 and the side away from the first clamping block 2, and the hook 7 is engaged with the threaded holes 31.

[0029] By adopting the above technical solution, the connection between hook 7 and guide block 3 is achieved.

[0030] Specifically, one end of the screw 8 is rotatably connected to the main clamping plate 1, and the secondary clamping plate 6 is provided with a U-shaped groove 61 corresponding to the screw 8.

[0031] By adopting the above technical solution, it is easy to quickly lock the secondary clamping plate 6.

[0032] Specifically, the secondary clamping plate 6 is provided with a guide groove 62 corresponding to the guide block 3, which cooperates with the guide block 3.

[0033] By adopting the above technical solution, the installation of the secondary clamping plate 6 is guided, so that the secondary clamping plate 6 can be clamped vertically on the junction box, which better protects the main structure of the junction box and avoids problems such as appearance damage or even deformation of the junction box leading to functional impairment.

[0034] Specifically, the first clamping block 2 is connected to a positioning block 9 on its end side, and the secondary clamping plate 6 is provided with a mating groove 63 corresponding to the positioning block 9. During installation, the positioning block 9 is placed against the bottom of the junction box (different from the side where the cable is located) to achieve positioning.

[0035] By adopting the above technical solution, the position of the junction box is positioned by the positioning block 9, thus avoiding problems such as inaccurate positioning and angle deviation.

[0036] Example 2

[0037] The difference between this embodiment and embodiment 1 is that, specifically, there are three screws 8, which are respectively set on the three sides of the main clamping plate 1.

[0038] By adopting the above technical solution, the three screws 8 are arranged in a triangle, which makes the force on the secondary clamping plate 6 more uniform, thereby ensuring the stability of the junction box clamping.

[0039] Example 3

[0040] The difference between this embodiment and embodiment 1 is that, specifically, both the first clamping block 2 and the second clamping block 4 are provided with clearance grooves.

[0041] By adopting the above technical solution, the cables on the junction box can be avoided, thus preventing the cables from being damaged.

[0042] In summary, this invention uses a screw 8 and a wing nut 5 to lock the main clamping plate 1 and the secondary clamping plate 6 together, thereby clamping the junction box through the cooperation of the first clamping block 2 and the second clamping block 4. Pulling the hook 7 on the guide block 3 allows for tensile testing of the junction box. It features a simple structure and convenient fixing of the junction box, without generating torque during the fixing process, ensuring the reliability of the test results. This invention, using a screw 8 and a wing nut 5 to lock the main clamping plate 1 and the secondary clamping plate 6, is applicable to junction boxes of different sizes. The guide block 3 has hooks 7 connected to its four sides and the side away from the first clamping block 2, allowing for simultaneous testing in five directions while the component is stationary, eliminating the need to rotate the component, reducing operator time consumption during testing, and improving efficiency. Testing efficiency; One end of the screw 8 in this utility model is rotatably connected to the main clamping plate 1, and the secondary clamping plate 6 is provided with a U-shaped groove 61 corresponding to the screw 8, which facilitates the quick locking of the secondary clamping plate 6; This utility model guides the installation of the secondary clamping plate 6 through the cooperation of the guide block 3 and the guide groove 62, so that the secondary clamping plate 6 can be clamped vertically on the junction box, which better protects the main structure of the junction box and avoids problems such as appearance damage or even deformation of the junction box leading to functional impairment; This utility model uses the positioning block 9 to position the junction box, avoiding problems such as inaccurate positioning and angle deviation; This utility model has a total of three screws 8, which are respectively set on the three sides of the main clamping plate 1. The three screws 8 are arranged in a triangle, which makes the force on the secondary clamping plate 6 more even, thereby ensuring the stability of clamping the junction box.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tensile testing fixture for photovoltaic module junction boxes, characterized in that: It includes a main clamping plate and a secondary clamping plate. A first clamping block is connected to the top of the main clamping plate, and a second clamping block corresponding to the first clamping block is connected to the secondary clamping plate. A guide block is connected to the top of the main clamping plate on one side of the first clamping block. Hooks are connected to the four sides of the guide block and the side away from the first clamping block. The secondary clamping plate and the main clamping plate are connected by a screw and a wing nut.

2. The photovoltaic module junction box tensile testing fixture according to claim 1, characterized in that: The guide block has threaded holes on all four sides and the side away from the first clamping block, and the hook engages with the threaded holes.

3. The photovoltaic module junction box tensile testing fixture according to claim 1, characterized in that: One end of the screw is rotatably connected to the main clamping plate, and the secondary clamping plate is provided with a U-shaped groove corresponding to the screw.

4. The photovoltaic module junction box tensile testing fixture according to claim 1, characterized in that: There are three screws in total, which are respectively set on the three sides of the main clamping plate.

5. The photovoltaic module junction box tensile testing fixture according to claim 1, characterized in that: The secondary clamping plate is provided with a guide groove corresponding to the guide block.

6. The photovoltaic module junction box tensile testing fixture according to claim 1, characterized in that: Both the first clamping block and the second clamping block are provided with clearance grooves.

7. The photovoltaic module junction box tensile testing fixture according to claim 1, characterized in that: A positioning block is connected to one end of the first clamping block.

8. The photovoltaic module junction box tensile testing fixture according to claim 7, characterized in that: The secondary clamping plate is provided with a mating groove corresponding to the positioning block.

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