Junction box tension testing device

Abstract

The utility model relates to a junction box tension testing device, which belongs to the technical field of junction boxes and comprises a base, a fixing mechanism is arranged on the top side of the base, a clamping and limiting mechanism is arranged on the top side of the base, a box body is placed in the clamping and limiting mechanism, a lead is fixed at one end of the box body, a vertical plate is fixed at the top end of the base, and the vertical plate is fixed at the top end of the base. A hydraulic cylinder is fixed to the left side of the vertical plate, and a tension tester is fixed to an output shaft of the hydraulic cylinder. According to the junction box tension testing device, the fixing mechanism is arranged on the top side of the base, so that the box body can be fixed, the box body can be conveniently moved when being pulled, meanwhile, the box body can be conveniently driven to move by pulling the fixing mechanism, the clamping and limiting mechanism is arranged on the top side of the base, and a lead can be clamped and fixed; therefore, a tension test can be carried out between the box body and the lead, and the clamping limiting mechanism can clamp leads with different diameters.

Description

Technical Field

[0001] The utility model relates to the technical field of junction boxes, in particular to a junction box tensile test device. Background Art

[0002] The photovoltaic module junction box is a connector between the solar cell array composed of solar cell modules and the solar charging control device. Its main function is to connect the electricity generated by the solar cells to the external circuit. It can be seen that the quality of the junction box is crucial. The production environment of the junction box is generally made of PVC and galvanized iron boxes. In order to verify whether the connection between the lead wire and the junction box is good, it is necessary to conduct a tensile test on the junction box.

[0003] For example, a photovoltaic module junction box tensile test device is disclosed in Chinese Patent (CN208488331 U), which includes a base, a pressing block, a support hanger, and a tensile tester. A modular hole is opened on the base, and a track groove is opened on the pressing block. The junction box is placed on the base with the lid on top and the box body at the bottom. The two opposite sides of the junction box are respectively pressed against the box body by the pressing block. The pressing block is connected to the base through a fastener passing through the track groove and a certain modular hole. The support hanger straddles the pressing blocks on both sides. The tensile tester is directly opposite to the handle on the lid and is connected to the support hanger. The advantages of this utility model are: it can accurately match junction boxes of various specifications for testing, and adjusting the pressing block can meet the fixing requirements. The support hanger for installing the tensile tester is adjusted accordingly, with wide versatility, unified test tensile force, reduced deviation, and avoiding the adverse impact of human factors on the test results.

[0004] The above solution still has the following technical deficiencies. The above solution only conducts a tensile test on the fastening degree between the lid and the box body, and cannot test the fastening degree between the box body and the lead wire. At the same time, the above solution requires manual adjustment of the fasteners. Since the number of fasteners is large, it is very time-consuming and laborious to adjust. Based on this, a junction box tensile test device is proposed. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a junction box tensile test device, which has the advantages of being convenient to test the fastening degree between the box body and the lead wire, etc., and solves the problem that it is not convenient to test the fastening degree between the box body and the lead wire.

[0006] To achieve the above object, the utility model provides the following technical solution: A junction box tensile test device includes a base. A fixing mechanism is provided on the top side of the base. A clamping and limiting mechanism is provided on the top side of the base. A box body is placed in the clamping and limiting mechanism. One end of the box body is fixed with a lead wire. A vertical plate is fixed at the top end of the base. A hydraulic cylinder is fixed on the left side of the vertical plate. The output shaft of the hydraulic cylinder is fixed with a tensile tester;

[0007] The fixing mechanism includes a placement plate located above the base. A lead screw is threadedly connected to the top end of the placement plate. A handle is fixed to the top end of the lead screw. The bottom end of the lead screw is rotatably connected to a clamping plate. A limiting block is fixed to the left end of the clamping plate. A hanging ring is fixed to the left end of the placement plate. Four support rods are fixed to the bottom end of the placement plate. A support block is fixed to the bottom end of the support rod.

[0008] Furthermore, the clamping and limiting mechanism includes an installation box fixed to the top end of the base. A motor is fixed to the top end of the installation box. A bidirectional screw is fixed to the output shaft of the motor. Two sliders are threadedly connected to the outer surface of the bidirectional screw. A moving plate is fixed to the rear side of the slider. A connecting rod is fixed to the front side of the slider. A fixing plate is fixed to the front end of the connecting rod. A rubber pad is fixed to the inner wall of the fixing plate.

[0009] Furthermore, a support groove is formed inside the base. The support block slides in the support groove.

[0010] Furthermore, a limiting groove is formed on the left side of the inner wall of the placement plate. The limiting block slides in the limiting groove.

[0011] Furthermore, a notch is formed at the right end of the placement plate. The lead wire is located in the notch.

[0012] Furthermore, a rectangular groove is formed on the front side of the installation box. The connecting rod slides in the rectangular groove.

[0013] Furthermore, a moving groove is formed on the rear side of the inner wall of the installation box. The moving plate slides in the moving groove.

[0014] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0015] In this wiring box tensile test device, by providing a fixing mechanism on the top side of the base, the box body can be fixed, which is convenient for the box body to move when being pulled. At the same time, it is convenient to drive the box body to move by pulling the fixing mechanism. By providing a clamping and limiting mechanism on the top side of the base, the lead wire can be clamped and fixed, so that a tensile test can be carried out between the box body and the lead wire. At the same time, the clamping and limiting mechanism can clamp lead wires with different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present invention;

[0017] Figure 2 is a schematic structural diagram of the fixing mechanism of the present invention;

[0018] Figure 3This is a schematic structural diagram of the clamping and limiting mechanism of the present utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of a partial structure of the clamping and limiting mechanism of the present utility model.

[0020] In the figure: 1 base, 200 fixing mechanism, 201 placing plate, 202 lead screw, 203 handle, 204 clamping plate, 205 limiting block, 206 hanging ring, 207 support rod, 208 support block, 300 clamping and limiting mechanism, 301 mounting box, 302 motor, 303 bidirectional screw, 304 slider, 305 moving plate, 306 connecting rod, 307 fixing plate, 308 rubber pad, 4 box body, 5 lead wire, 6 vertical plate, 7 hydraulic cylinder, 8 tensile tester. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-4 , a wiring box tensile test device in this embodiment includes a base 1. A fixing mechanism 200 is provided on the top side of the base 1. A clamping and limiting mechanism 300 is provided on the top side of the base 1. A box body 4 is placed inside the clamping and limiting mechanism 300. One end of the box body 4 is fixed with a lead wire 5. A vertical plate 6 is fixed to the top end of the base 1. A hydraulic cylinder 7 is fixed to the left side of the vertical plate 6. The output shaft of the hydraulic cylinder 7 is fixed with a tensile tester 8.

[0023] The fixing mechanism 200 in this embodiment is used to fix the box body 4. The clamping and limiting mechanism 300 is used to clamp and fix the electric wire. The hydraulic cylinder 7 is used to pull the tensile tester 8. The tensile tester 8 is used to measure the tensile force between the box body 4 and the lead wire 5.

[0024] Please refer to Figure 1 and Figure 2, To facilitate the fixation of the box body 4 and drive its sliding, the fixing mechanism 200 in this embodiment includes a placement plate 201 located above the base 1. A notch is provided at the right end of the placement plate 201. The lead wire 5 is located in the notch. A screw rod 202 is threadedly connected to the top end of the placement plate 201. A handle 203 is fixed to the top end of the screw rod 202. The bottom end of the screw rod 202 is rotatably connected to a clamping plate 204. A limiting block 205 is fixed to the left end of the clamping plate 204. A limiting groove is provided on the left side of the inner wall of the placement plate 201. The limiting block 205 slides in the limiting groove. A hanging ring 206 is fixed to the left end of the placement plate 201. Four support rods 207 are fixed to the bottom end of the placement plate 201. A support block 208 is fixed to the bottom end of the support rod 207. A support groove is provided inside the base 1. The support block 208 slides in the support groove.

[0025] In the fixing mechanism 200 of this embodiment, the box body 4 can be placed through the placement plate 201. The handle 203 is used to drive the screw rod 202 to rotate. The screw rod 202 is used to drive the clamping plate 204 to move up and down. The clamping plate 204 and the placement plate 201 are used in cooperation to clamp the box body 4. The support block 208 can limit the box body 4 by sliding in the support groove, and at the same time facilitate the sliding of the box body 4.

[0026] It should be noted that the hook on the tensile tester 8 can be hung in the hanging ring 206, so as to facilitate the pulling of the placement plate 201. The limiting block 205 is used to limit the clamping plate 204.

[0027] Please refer to Figure 1 and Figure 3 , To facilitate the clamping of the lead wire 5, the clamping and limiting mechanism 300 in this embodiment includes an installation box 301 fixed to the top end of the base 1. A motor 302 is fixed to the top end of the installation box 301. A bidirectional screw rod 303 is fixed to the output shaft of the motor 302. Two sliders 304 are threadedly connected to the outer surface of the bidirectional screw rod 303. A moving plate 305 is fixed to the rear side of the slider 304. A moving groove is provided on the rear side of the inner wall of the installation box 301. The moving plate 305 slides in the moving groove. A connecting rod 306 is fixed to the front side of the slider 304. A rectangular groove is provided on the front side of the installation box 301. The connecting rod 306 slides in the rectangular groove. A fixing plate 307 is fixed to the front end of the connecting rod 306. A rubber pad 308 is fixed to the inner wall of the fixing plate 307.

[0028] In the clamping and limiting mechanism 300 of this embodiment, the motor 302 can drive the bidirectional screw rod 303 to rotate. The bidirectional screw rod 303 is used to drive the two sliders 304 to move relatively or away from each other. The connecting rod 306 is used to drive the fixing plate 307 and the rubber pad 308 to move. The two fixing plates 307 are used to clamp the lead wire 5.

[0029] It should be noted that the movable plate 305 limits the slider 304 by sliding in the movable groove. The bottom end of the bidirectional screw 303 is rotatably connected to the bottom side of the inner wall of the mounting box 301. The rubber pad 308 is used to prevent the fixing plate 307 from causing indentations on the lead 5.

[0030] All the electrical components mentioned in the text are electrically connected to the controller and the power supply. The control mode of the present utility model is controlled by the controller. The control circuit of the controller can be realized by simple programming of those skilled in the art. The provision of the power supply also belongs to the common knowledge in the art. And the present utility model is mainly used to protect mechanical devices, so the control mode and circuit connection of the present utility model will not be explained in detail.

[0031] The working principle of the above embodiment is as follows:

[0032] Put the box body 4 into the placement plate 201, place the lead 5 between the two fixing plates 307, rotate the handle 203, the handle 203 drives the lead screw 202 to rotate, the lead screw 202 drives the clamping plate 204 to move downward, the clamping plate 204 squeezes and fixes the box body 4, start the motor 302, the output shaft of the motor 302 drives the bidirectional screw 303 to rotate, the bidirectional screw 303 drives the two sliders 304 to move relatively, the sliders 304 clamp the lead 5, start the hydraulic cylinder 7, the telescopic end of the hydraulic cylinder 7 contracts and drives the tensile tester 8 to move, the tensile tester 8 generates a tensile force on the hanging ring 206, the hanging ring 206 transmits the tensile force to the placement plate 201 and the box body 4, a tensile force is generated between the box body 4 and the lead 5, so as to test the fastening degree between the box body 4 and the lead 5. When the box body 4 and the lead 5 break, the placement plate 201 and the box body 4 move to the left, and the placement plate 201 drives the support rod 207 and the support block 208 to move.

[0033] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0034] Although the embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model.

Claims

1. A junction box tensile test device, comprising a base (1), characterized in that: A fixing mechanism (200) is provided on the top side of the base (1), a clamping and limiting mechanism (300) is provided on the top side of the base (1), a box body (4) is placed inside the clamping and limiting mechanism (300), a lead wire (5) is fixed to one end of the box body (4), a vertical plate (6) is fixed to the top of the base (1), a hydraulic cylinder (7) is fixed to the left side of the vertical plate (6), and a tensile tester (8) is fixed to the output shaft of the hydraulic cylinder (7); The fixing mechanism (200) comprises a placement plate (201) located above the base (1); the top end of the placement plate (201) is threadedly connected to a screw rod (202); the top end of the screw rod (202) is fixed with a handle (203); the bottom end of the screw rod (202) is rotatably connected to a clamping plate (204); the left end of the clamping plate (204) is fixed with a limit block (205); the left end of the placement plate (201) is fixed with a hanging ring (206); the bottom end of the placement plate (201) is fixed with four support rods (207); the bottom end of each support rod (207) is fixed with a support block (208).

2. A junction box tensile testing device according to claim 1, characterized in that: The clamping and limiting mechanism (300) comprises an installation box (301) fixed to the top of the base (1), a motor (302) being fixed to the top of the installation box (301), a bidirectional screw (303) being fixed to the output shaft of the motor (302), two sliders (304) being threadedly connected to the outer surface of the bidirectional screw (303), a moving plate (305) being fixed to the rear side of the slider (304), a connecting rod (306) being fixed to the front side of the slider (304), a fixing plate (307) being fixed to the front end of the connecting rod (306), and a fixing rubber pad (308) being provided on the inner wall of the fixing plate (307).

3. A junction box tensile testing device according to claim 1, characterized in that: A support groove is provided inside the base (1), and the support block (208) slides in the support groove.

4. A junction box tensile testing device according to claim 1, characterized in that: A limiting groove is provided on the left side of the inner wall of the placement plate (201), and the limiting block (205) slides in the limiting groove.

5. A junction box tensile testing device according to claim 1, characterized in that: A notch is provided at the right end of the placement plate (201), and the lead wire (5) is located in the notch.

6. A junction box tensile testing device according to claim 2, characterized in that: The front side of the installation box (301) is provided with a rectangular groove, and the connecting rod (306) slides in the rectangular groove.

7. A junction box tensile testing device according to claim 2, characterized in that: A movable groove is provided on the rear side of the inner wall of the installation box (301), and the movable plate (305) slides in the movable groove.

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