Device for testing fixing force of installation surface of photovoltaic module junction box

Abstract

The utility model discloses a photovoltaic module junction box installation surface fixing force testing device, which comprises a truss and a testing frame which slides back and forth along the truss, the testing frame comprises a sliding disc, a main stand column, an upper plate and a lower plate, the upper plate and the lower plate extend towards the side edge of the main stand column, and the sliding disc is in sliding fit with the truss. The end, away from the main stand column, of the upper plate is a weight position, the lower end of the main stand column forms a top testing position, the end, away from the main stand column, of the lower plate is a lateral testing position, one end of the silk thread extends to the weight position, and the other end of the silk thread extends to the top testing position or the lateral testing position through the limiting structure and is connected with the junction box. The main stand column and the sliding disc are rotationally connected relative to the vertical center shaft so that the lateral testing positions can correspond to the four side faces of the junction box. According to the utility model, under the condition that the sliding disc does not need to be adjusted, the pulling force of the junction box in each direction is tested, and only corresponding weights need to be selected, so that the testing precision and efficiency are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of junction box testing, in particular to a device for testing the fixing force of a photovoltaic component junction box installation surface. Background Art

[0002] After the photovoltaic module junction box is installed, it is necessary to perform an installation surface fixing force test and a lead wire tension test. The junction box installation surface fixing force test includes tension tests in five directions: top, left, right, front, and back of the junction box. The currently used test device can only test one of these directions. When other directions need to be tested, the position of the test device needs to be readjusted, which is time-consuming and cannot ensure that the height of each adjustment can remain consistent, resulting in reduced test efficiency and test accuracy. Therefore, it is necessary to design a junction box installation surface fixing force test device with a simple structure and the ability to improve test efficiency. Utility Model Content

[0003] In order to solve the technical problem that the fixing force testing device for the installation surface of the junction box of a photovoltaic module in the prior art can only test in one direction, resulting in low testing efficiency and testing accuracy, the utility model provides a fixing force testing device for the installation surface of the junction box of a photovoltaic module to solve the above problem.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a photovoltaic module junction box installation surface fixing force testing device, including a truss and a test frame that slides back and forth along the truss, the test frame includes a sliding disk, a main column, and an upper plate and a lower plate extending to the side of the main column, the sliding disk and the truss are slidably matched, the end of the upper plate away from the main column is a weight position, the lower end of the main column forms a top test position, the end of the lower plate away from the main column is a lateral test position, the main column, the upper plate and the lower plate are all provided with limiting structures, one end of the silk thread extends to the weight position and is connected to the weight, the other end of the silk thread extends to the top test position or the lateral test position through the limiting structure, and is connected to the junction box; the main column and the sliding disk are rotatably connected relative to the vertical center axis, so that the lateral test position can correspond to the four sides of the junction box.

[0005] Furthermore, the main column and the upper plate are both straight rods, the upper plate is located above the lower plate, and the lower plate is an L-shaped structure, with the end of the lower plate extending downward.

[0006] Furthermore, the limiting structure is a plurality of fixed pulleys.

[0007] Furthermore, fixed pulleys are provided at the connection between the main column and the upper plate and the lower plate, as well as at the ends and the bending parts of the upper plate and the lower plate, and the extension direction of the wire is changed by the fixed pulleys.

[0008] Furthermore, an adjustment plate is provided at the end of the lower plate, and a fixed pulley is also provided on the adjustment plate. The wire passes through the fixed pulley at the end of the lower plate and enters the fixed pulley on the adjustment plate and is connected to the side of the junction box; the adjustment plate can adjust the up and down position relative to the lower plate.

[0009] Furthermore, a waist-shaped hole is provided on the adjustment plate, and the adjustment plate and the lower plate are fixed by bolts passing through the waist-shaped hole.

[0010] Furthermore, the adjustment plate and the lower plate are hinged to the hinge shaft, and the waist-shaped hole extends along an arc centered on the hinge shaft.

[0011] Furthermore, a T-shaped slot is provided at the bottom of the sliding plate, the top of the main column is rotatably matched with the T-shaped slot, and the main column and the sliding plate are fixed by a pin shaft.

[0012] Furthermore, the main column is provided with positioning holes arranged in an array along the circumferential direction, and the outer circumferential surface of the sliding disk is provided with four pin holes, and the pin shaft passes through one of the pin holes and is connected to the positioning hole.

[0013] Furthermore, a photovoltaic module is arranged below the truss, and a junction box is fixed on the photovoltaic module.

[0014] The beneficial effects of the utility model are:

[0015] (1) The utility model suspends a weight at the end of the upper plate, and is provided with a top test position and a lateral test position. The main column can rotate relative to the sliding plate. The top test position can test the vertical fixing force of the junction box, and the lateral test position can test the fixing force of the four sides of the junction box. Thus, the tensile force of the junction box in all directions can be tested without adjusting the sliding plate. Only the corresponding weight needs to be selected, which is easy to operate and greatly improves the test accuracy and efficiency.

[0016] (2) The utility model guides the wire through a fixed pulley, thereby reducing friction during the wire transmission process and improving test accuracy.

[0017] (3) The utility model is provided with an adjustment plate at the end of the lower plate, which can adjust the height of the lateral test position to adapt to junction boxes of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a stereogram of a specific implementation of the photovoltaic module junction box installation surface fixing force testing device described in the utility model;

[0020] Figure 2 When testing the top lead wire of the junction box, Figure 1A front cross-sectional view of

[0021] Figure 3 When testing the lead wire on the left side of the junction box, Figure 1 A front cross-sectional view of

[0022] Figure 4 When testing the lead wire on the right side of the junction box, Figure 1 A front cross-sectional view of

[0023] Figure 5 yes Figure 3 A magnified image of point a;

[0024] Figure 6 yes Figure 4 It is the AA section view;

[0025] Figure 7 yes Figure 4 Enlarged view of point b.

[0026] In the figure, 1, truss, 2, test frame, 3, sliding plate, 301, T-slot, 4, main column, 5, upper plate, 6, lower plate, 7, weight position, 8, top test position, 9, lateral test position, 10, junction box, 11, silk thread, 12, weight, 13, adjustment plate, 14, screw, 15, bolt, 16, hinge shaft, 17, fixed pulley, 18, pin shaft, 19, positioning hole, 20, pin hole, 21, photovoltaic module, 22, waist-shaped hole. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] Embodiment 1

[0029] like Figure 1-Figure 3As shown, a photovoltaic module junction box installation surface fixing force test device includes a truss 1 and a test frame 2 that slides back and forth along the truss 1. The truss 1 provides a guide rail for the test frame 2 to reciprocate and also serves as a support for the entire test device. The test frame 2 includes a sliding plate 3, a main column 4, and an upper plate 5 and a lower plate 6 extending to the side of the main column 4. The sliding plate 3 slides with the truss 1 to drive the test frame 2 to slide back and forth in the horizontal direction as a whole, so that the test device is directly above the junction box 10, and the upper plate 5 is away from one end of the main column 4. It is a weight position 7, the lower end of the main column 4 forms a top test position 8, the end of the lower plate 6 away from the main column 4 is a lateral test position 9, and the main column 4, the upper plate 5 and the lower plate 6 are all provided with a limiting structure. One end of the wire 11 extends to the weight position 7 and is connected to the weight 12, and the other end of the wire 11 extends to the top test position 8 or the lateral test position 9 through the limiting structure, and is connected to the junction box 10; the main column 4 is rotatably connected to the sliding disk 3 relative to the vertical center axis, so that the lateral test position 9 can correspond to the four sides of the junction box 10.

[0030] During the test, first adjust the sliding plate 3 horizontally along the truss 1 so that the top test position 8 is located directly above the junction box 10. After the adjustment is completed, the sliding plate 3 and the truss 1 can be locked by screws 14. When used to test the vertical fixing force of the junction box 10, Figure 2 As shown, one end of the wire 11 extends from the weight position 7 to hang the weight 12, and the other end of the wire 11 extends from the top test position 8 to connect with the top; when used to test the lateral fixing force (left, right, front and back directions) of the junction box 10, as shown in FIG. Figure 3 and Figure 4 As shown, one end of the wire 11 is extended from the weight position 7 to hang the weight 12, and the other end of the wire 11 is extended from the lateral test position 9 to connect to the side of the junction box 10. Since the lower plate 6 is already located on the side of the junction box 10, there is no need to adjust the position of the sliding disk 3, and only the weight 12 needs to be increased or decreased, and the main column 4 needs to be rotated when testing different lateral directions, thereby greatly improving the test efficiency and test accuracy. In the utility model, the wire 11 is exposed to the outside, and the size of the entire device is not large, so when switching between the top test position 8 and the lateral test position 9, the hanging position of the wire 11 can be directly changed, and the operation is convenient and quick.

[0031] In order to facilitate testing, the junction box 10 can be provided with tension ropes extending in all directions, such as Figure 2 The middle junction box 10 is provided with a tension rope, and the silk thread 11 is hooked on the tension rope for testing.

[0032] In order to limit the main column 4 in the vertical direction, Figure 6As shown, the bottom of the sliding disk 3 is provided with a T-shaped slot 301, and the top of the main column 4 is rotatably matched with the T-shaped slot 301, so that the main column 4 can be suspended at the bottom of the sliding disk 3, and the main column 4 and the sliding disk 3 are fixed by a pin shaft 18. When the main column 4 needs to be rotated, the pin shaft 18 is taken out. Since the main column 4 in the utility model is only switched and adjusted between four sides, it is preferred that the main column 4 is arranged with positioning holes 19 in an array along the circumferential direction, and the outer circumferential surface of the sliding disk 3 is provided with four pin holes 20, and the pin shaft 18 passes through one of the pin holes 20 and is connected with the positioning hole 19. The sliding disk 3 is fixed in the circumferential direction, and the orientation of the pin hole 20 corresponds to the four sides of the junction box 10. When the main column 4 is rotated, the pin hole 20 corresponds to the positioning hole 19.

[0033] In a preferred embodiment of the present invention, the main column 4 and the upper plate 5 are both straight rods, the upper plate 5 is located above the lower plate 6, the lower plate 6 is an L-shaped structure, and the end of the lower plate 6 extends downward. The lower plate 6 is L-shaped, and the wire 11 can be guided laterally and then to the height of the junction box 10, so that the end of the wire 11 is pulled horizontally along the side of the junction box 10.

[0034] The limiting structure is mainly used to provide guidance for the turning of the wire 11. The limiting structure can be a raised structure on the surface of the main column 4, the upper plate 5 and the lower plate 6, such as a bump, a raised cylindrical pin, etc., but these will produce a certain friction with the wire 11, resulting in inaccurate tension values ​​tested. For this reason, the utility model uses a number of fixed pulleys 17 as the limiting structure. The fixed pulleys 17 are mainly arranged at the connection between the main column 4 and the upper plate 5 and the lower plate 6, as well as the ends and bends of the upper plate 5 and the lower plate 6. The wire 11 changes its extension direction through the fixed pulleys 17. Figure 2 As shown, a fixed pulley 17 is arranged at the right end of the upper plate 5, and the weight 12 is suspended at its lower end. A fixed pulley 17 is arranged at each connection between the main column 4 and the upper plate 5 and the lower plate 6, and a fixed pulley 17 is also arranged at the right end bend and the lower end of the lower plate 6.

[0035] In order to be able to hang the wire at the top test position 8 and the lateral test position 9 at the same time, the utility model can design the fixed pulleys 17 at both ends of the upper plate 5 as a double-layer pulley structure, that is, two fixed pulleys 17 are coaxially arranged, such as Figure 5 As shown, the two wires 11 are respectively attached to their own fixed pulleys 17, so that the wires 11 can be always suspended on the fixed pulleys 17, or the main column 4, the upper plate 5 and the lower plate 6 can be designed as a closed cavity structure to hide the fixed pulleys 17 and the wires 11 inside.

[0036] The junction box 10 is fixed to the photovoltaic module 21. The utility model is used to test the fixing force between the junction box 10 and the photovoltaic module 21. Figure 2As shown, a photovoltaic assembly 21 is arranged below the truss 1 , and a junction box 10 is fixed on the photovoltaic assembly 21 . A plurality of junction boxes 10 can be fixed on the photovoltaic assembly 21 along the reciprocating motion direction of the sliding plate 3 , and the plurality of junction boxes 10 can be tested by moving the sliding plate 3 .

[0037] Embodiment 2

[0038] When performing the lateral tensile test, the wire of the lateral test position 9 needs to be pulled in the horizontal direction for testing. In the first embodiment, the lower plate 6 is fixed in structure, and the height of the lateral test position 9 cannot be adjusted, so only the junction boxes 10 of the same size can be tested. In order to expand the scope of application, the present embodiment is improved as follows:

[0039] like Figure 3 As shown, an adjustment plate 13 is also provided at the end of the lower plate 6, and a fixed pulley 17 is also provided on the adjustment plate 13. The wire 11 passes through the fixed pulley 17 at the end of the lower plate 6 and enters the fixed pulley 17 on the adjustment plate 13 and is connected to the side of the junction box 10; the adjustment plate 13 can adjust the position in the up and down direction relative to the lower plate 6. When replacing a test box of a different size, only the adjustment plate 13 needs to be adjusted.

[0040] In this embodiment, the up-down position is adjusted by the waist-shaped hole 22 provided on the adjustment plate 13. The adjustment plate 13 and the lower plate 6 are fixed by the bolt 15 passing through the waist-shaped hole 22. The waist-shaped hole 22 can extend in the vertical direction. In a preferred embodiment, the adjustment plate 13 and the lower plate 6 are hinged to the hinge shaft 16, and the waist-shaped hole 22 extends along an arc centered on the hinge shaft 16, such as Figure 7 As shown, the adjustment plate 13 is a fan-shaped structure. When the height of the fixed pulley 17 on the adjustment plate 13 needs to be adjusted, the bolt 15 is loosened and the adjustment plate 13 is rotated around the hinge shaft 16. The adjustment plate 13 is always connected to the lower plate 6 and will not move at will, which is convenient for adjustment.

[0041] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0042] In this specification, the schematic representation of the terms does not necessarily refer to the same embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in one or more embodiments.

[0043] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A photovoltaic module junction box installation surface fixing force testing device, characterized in that: The test frame (2) comprises a truss (1) and a test frame (2) that slides back and forth along the truss (1), wherein the test frame (2) comprises a sliding plate (3), a main column (4), and an upper plate (5) and a lower plate (6) that extend to the side of the main column (4), wherein the sliding plate (3) is slidably matched with the truss (1), an end of the upper plate (5) away from the main column (4) is a weight position (7), a lower end of the main column (4) forms a top test position (8), and an end of the lower plate (6) away from the main column (4) is a lateral test position (9), and the main column (4), the upper plate (5) and the lower plate (6) are all provided with a limiting structure, one end of the wire (11) extends to the weight position (7) and is connected to the weight (12), and the other end of the wire (11) extends to the top test position (8) or the lateral test position (9) through the limiting structure and is connected to the junction box (10); The main column (4) is rotatably connected to the sliding plate (3) relative to the vertical central axis, so that the lateral test position (9) can correspond to the four side surfaces of the junction box (10).

2. The photovoltaic module junction box installation surface fixing force testing device according to claim 1, characterized in that: The main upright column (4) and the upper plate (5) are both straight rods; the upper plate (5) is located above the lower plate (6); the lower plate (6) is an L-shaped structure, and the end of the lower plate (6) extends downward.

3. The photovoltaic module junction box installation surface fixing force testing device according to claim 1, characterized in that: The limiting structure is a plurality of fixed pulleys (17).

4. The photovoltaic module junction box installation surface fixing force testing device according to claim 3, characterized in that: Fixed pulleys (17) are provided at the connection between the main column (4) and the upper plate (5) and the lower plate (6), as well as at the ends and the bending parts of the upper plate (5) and the lower plate (6), and the extension direction of the wire (11) is changed by the fixed pulleys (17).

5. The photovoltaic module junction box installation surface fixing force testing device according to claim 2, characterized in that: An adjusting plate (13) is also provided at the end of the lower plate (6), and a fixed pulley (17) is also provided on the adjusting plate (13). The wire (11) passes through the fixed pulley (17) at the end of the lower plate (6) and enters the fixed pulley (17) on the adjusting plate (13) to be connected to the side of the junction box (10); the adjusting plate (13) can adjust its position in the up and down directions relative to the lower plate (6).

6. The photovoltaic module junction box installation surface fixing force testing device according to claim 5, characterized in that: The adjustment plate (13) is provided with a waist-shaped hole (22), and the adjustment plate (13) and the lower plate (6) are fixed by means of bolts (15) passing through the waist-shaped hole (22).

7. The photovoltaic module junction box installation surface fixing force testing device according to claim 6, characterized in that: The adjustment plate (13) and the lower plate (6) are hinged to a hinge shaft (16), and the waist-shaped hole (22) extends along an arc centered on the hinge shaft (16).

8. The photovoltaic module junction box installation surface fixing force testing device according to claim 1, characterized in that: The bottom of the sliding plate (3) is provided with a T-shaped slot (301), the top of the main column (4) is rotatably matched with the T-shaped slot (301), and the main column (4) and the sliding plate (3) are fixed by a pin shaft (18).

9. The photovoltaic module junction box installation surface fixing force testing device according to claim 8, characterized in that: The main column (4) is provided with positioning holes (19) arranged in an array along the circumferential direction, and the outer circumferential surface of the sliding plate (3) is provided with four pin holes (20), and the pin shaft (18) passes through one of the pin holes (20) and is connected to the positioning hole (19).

10. The photovoltaic module junction box installation surface fixing force testing device according to claim 1, characterized in that: A photovoltaic assembly (21) is arranged below the truss (1), and a junction box (10) is fixed on the photovoltaic assembly (21).

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