Direct current fuse pull-in tool for photovoltaic direct current combiner box

Abstract

The utility model is suitable for the technical field of fuse closing tools, and provides a DC fuse closing tool for a photovoltaic DC combiner box, and the tool comprises a butt joint column; the butt joint screw hole is formed in the center of one end of the butt joint column; the butt joint is screwed in the butt joint screw hole through threads; the first drag hook and the second drag hook are welded to the outer wall of one side of the butt joint, and the first drag hook is located on one side of the second drag hook; the hook tips are integrally formed at one end of the first drag hook and one end of the second drag hook; through the mutual cooperation of the first drag hook, the second drag hook and the push plate, the fuse base can be quickly pulled open and pushed upwards by hooking the closing position of the fuse base, and the fault fuse is clamped by using the front ends of the first drag hook and the second drag hook, so that the work of processing the branch zero current defect is safe, convenient and quick, and the working efficiency is improved; during use, the working efficiency is effectively improved, and a maintainer is not in direct contact with the safety base.

Description

Technical Field

[0001] The utility model belongs to the technical field of insurance pulling and closing tools, and particularly relates to a DC insurance pulling and closing tool for a photovoltaic DC busbar box. Background Art

[0002] A large number of inverters are set in the photovoltaic area. Each centralized inverter has a DC busbar box on the DC side. There are several positive and negative DC fuses in the busbar box. The number of DC fuses installed in the photovoltaic area is large. Affected by high temperatures in summer, the DC fuses in the busbar box often burn out due to high temperatures, resulting in a zero-current defect in the power generation branch. When replacing a faulty DC fuse on-site, it is not easy to pull open the fuse base, and when pulling open the fuse base, there is sometimes an "arc" phenomenon, which not only affects work efficiency but also may pose a threat to the personal safety of maintenance personnel.

[0003] Therefore, a DC insurance pulling and closing tool for a photovoltaic DC busbar box is proposed. Summary of the Utility Model

[0004] The utility model provides a DC insurance pulling and closing tool for a photovoltaic DC busbar box, aiming to solve the above problems.

[0005] The utility model is realized as follows. A DC insurance pulling and closing tool for a photovoltaic DC busbar box includes: a docking column; a docking screw hole opened at the central position of one end of the docking column; a docking head screwed into the internal of the docking screw hole through a thread; a first hook and a second hook welded on the outer wall of one side of the docking head, the first hook is located on one side of the second hook; hook tips integrally formed at one ends of the first hook and the second hook; a chute and a through groove opened at the top of the docking column, the chute is located below the through groove and is connected; a spring embedded and fixed on the inner wall of one side of the through groove; a button fixed at one end of the spring; a slider integrally formed at the bottom of the button; and a push plate integrally formed on the outer wall of one side of the button; a handle screwed to the other end of the docking column; an insulating sleeve sleeved on the outer wall of the handle.

[0006] Preferably, the outer walls of the first hook, the second hook, the hook tip and the push plate are all wrapped with electrical insulating tape.

[0007] Preferably, the included angle between the first hook and the second hook is degrees, and the first hook and the second hook both form a ""-shaped structure after being combined with the hook tip.

[0008] Preferably, the slider is located inside the chute, and the slider is slidably connected with the chute.

[0009] Preferably, an anti-slip groove is opened at the top of the button.

[0010] Preferably, symmetric inclined planes are provided at one end of the top and bottom of the push plate away from the button.

[0011] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0012] Through the mutual cooperation of the first hook, the second hook and the push plate, it is realized that the fuse base can be quickly pulled open and pushed upward by hooking the pulling position of the fuse base, and the faulty fuse is clamped out by the front ends of the first hook and the second hook, so that the work of dealing with the zero-current defect of the branch circuit is safe, convenient and fast, improving the work efficiency. When in use, the work efficiency is effectively improved, and the maintenance personnel do not directly contact the fuse base, reducing the possibility of being injured by the electric arc when pulling open the fuse base, and improving the safety guarantee of the maintenance personnel during work. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a schematic structural diagram of the docking column of the present utility model;

[0015] Figure 3 is a schematic structural diagram of the docking head of the present utility model;

[0016] Figure 4 is a schematic diagram of the cooperation between the button and the push plate of the present utility model;

[0017] Figure 5 is a schematic structural diagram of the handle of the present utility model.

[0018] In the figure: 1, docking column; 2, docking screw hole; 3, docking head; 4, first hook; 5, second hook; 6, hook tip; 7, chute; 8, through slot; 9, spring; 10, button; 11, slider; 12, push plate; 13, handle; 14, insulating sleeve. Detailed Embodiments

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments, and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above description of the drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects, not to describe a specific order.

[0020] References to "embodiments" in this specification mean that the particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] An embodiment of the utility model provides a DC fuse pulling and closing tool for a photovoltaic DC busbar box, as Figures 1-5 shown, which includes a docking post 1. A docking screw hole 2 is opened at the central position of one end of the docking post 1. A docking head 3 is connected to the inside of the docking screw hole 2 by screw thread. A first hook 4 and a second hook 5 are welded on the outer wall of the docking head 3 away from the docking post 1. The first hook 4 is located on one side of the second hook 5, and hook tips 6 are integrally formed at one ends of the first hook 4 and the second hook 5. A chute 7 and a through groove 8 are opened at the top of the docking post 1. The chute 7 is located below the through groove 8, and the chute 7 and the through groove 8 are communicated with each other. A spring 9 is embedded and fixed on the inner wall of one side of the through groove 8. One end of the spring 9 is fixedly provided with a button 10. An anti-slip groove is opened at the top of the button 10. A slider 11 is integrally formed at the bottom of the button 10. The slider 11 is located inside the chute 7, and the slider 11 is slidably connected with the chute 7. A push plate 12 is integrally formed at the central position of the outer wall of one side of the button 10. Symmetrical inclined surfaces are opened at the top and the bottom of the push plate 12 away from the button 10. The other end of the docking post 1 is connected to a handle 13 by screw thread. An insulating sleeve 14 is sleeved on the outer side wall of the handle 13.

[0022] It should be noted that since the DC fuses in the existing busbar box often burn out due to high temperature, resulting in a zero-current defect in the power generation branch. When replacing a faulty DC fuse on site, it is not easy to pull open the fuse base, and when pulling open the fuse base, sometimes an "arc discharge" phenomenon occurs, which not only affects the work efficiency but also may pose a threat to the personal safety of maintenance personnel. In this embodiment, through the mutual cooperation of the first hook 4, the second hook 5 and the push plate 12, it is realized that the fuse base can be quickly pulled open and pushed upward by hooking the pulling and closing position of the fuse base, and the faulty fuse is clamped out by the front ends of the first hook 4 and the second hook 5, so that the work of dealing with the zero-current defect of the branch is safe, convenient and fast, improving the work efficiency. When in use, the work efficiency is effectively improved, and the maintenance personnel do not directly contact the fuse base, reducing the possibility of being injured by the electric arc when pulling open the fuse base, and improving the safety guarantee of the maintenance personnel during work.

[0023] Specifically, in this embodiment, this scheme mainly includes a first hook 4, a second hook 5 and a push plate 12. When in use, the maintenance personnel hold the insulating sleeve 14 on the handle 13, and when closing the DC fuse of the photovoltaic DC combiner box, hook the hook tips 6 on the first hook 4 and the second hook 5 on the fuse, pull the tool downward, and the fuse is closed after being subjected to force. When the fuse needs to be pushed upward, the maintenance personnel presses the button 10 with his thumb and pushes it forward. Through the sliding of the slider 11 in the slide groove 7, the button 10 drives the push plate 12 to move in a straight line, and the push plate 12 moves to protrude from the first hook 4 and the second hook 5. At this time, the push plate 12 is inserted under the fuse, and the push plate 12 is forced to be tilted up, and the push plate 12 pushes the fuse upward. After completion, the button 10 is released, and the button 10 drives the push plate 12 to reset under the reset deformation force of the spring 9 to achieve the opening and closing of the fuse.

[0024] In a further preferred embodiment of the present invention, Figure 1 and Figure 3 As shown, the outer side walls of the first pull hook 4, the second pull hook 5, the hook tip 6 and the push plate 12 are all wrapped with electrical insulating tape.

[0025] In this embodiment, the first hook 4, the second hook 5, the hook tip 6 and the push plate 12 can be insulated and protected by the electrical insulating tape, so as to avoid the problem of electric shock to maintenance personnel due to electrical conduction.

[0026] In a further preferred embodiment of the present invention, Figure 1 and Figure 3 As shown, the included angle between the first hook 4 and the second hook 5 is 30 degrees, and the first hook 4 and the second hook 5 are combined with the hook tip 6 to form a "7" shape structure.

[0027] In this embodiment, the fuse can be fully pulled together by setting the angle between the first hook 4 and the second hook 5, or the first hook 4 and the second hook 5 can be clamped together, and the "7"-shaped structure can be used to easily hook it onto the DC fuse of the photovoltaic DC combiner box, making it easy to pull the fuse apart.

[0028] In a further preferred embodiment of the present invention, Figures 1-5 As shown, the docking column 1, the docking head 3, the button 10, the slider 11 and the handle 13 are all made of high-strength insulating polytetrafluoroethylene material.

[0029] In this embodiment, the structural strength and insulation of the docking column 1, the docking head 3, the button 10, the slider 11 and the handle 13 can be ensured by polytetrafluoroethylene.

[0030] It should be noted that, for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present utility model is not limited by the described action sequence, because according to the present utility model, certain steps may be adopted in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present utility model.

[0031] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the above-mentioned unit division may have other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0032] The units described as separate components above may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place, or can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0033] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than limiting the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict and without creative work, combine, add or delete the features in the embodiments of the present utility model according to the situation, or make other adjustments, so as to obtain different technical solutions that essentially do not deviate from the concept of the present utility model. These technical solutions also belong to the scope of protection of the present utility model.

Claims

1. A DC fuse pulling and closing tool for a photovoltaic DC busbar box, characterized in that, Including: Docking post (1); Docking screw hole (2) opened at the central position of one end of the docking post (1); Docking head (3) screwed into the inside of the docking screw hole (2) by thread; First hook (4) and second hook (5) welded to the outer wall of one side of the docking head (3), the first hook (4) is located on one side of the second hook (5); Hook tips (6) integrally formed at one ends of the first hook (4) and the second hook (5); Chute (7) and through slot (8) opened at the top of the docking post (1), the chute (7) is located below the through slot (8) and is connected; Spring (9) embedded and fixed on the inner wall of one side of the through slot (8); Button (10) fixed to one end of the spring (9); Slider (11) integrally formed at the bottom of the button (10); and Push plate (12) integrally formed on the outer wall of one side of the button (10); Handle (13) screwed to the other end of the docking post (1) by thread; Insulating sleeve (14) sleeved on the outer wall of the handle (13).

2. The DC fuse pulling and closing tool for a photovoltaic DC busbar box according to claim 1, characterized in that Electrical insulating tape is wrapped on the outer walls of the first hook (4), the second hook (5), the hook tip (6) and the push plate (12).

3. The DC fuse pulling and closing tool for a photovoltaic DC busbar box according to claim 1, characterized in that, The included angle between the first hook (4) and the second hook (5) is 30 degrees, and the first hook (4) and the second hook (5) are combined with the hook tip (6) to form a "7" - shaped structure.

4. A DC fuse pulling and closing tool for a photovoltaic DC busbar box according to claim 1, characterized in that The slider (11) is located inside the chute (7), and the slider (11) is slidably connected to the chute (7).

5. A DC fuse pulling and closing tool for a photovoltaic DC busbar box as described in claim 1, characterized in that, An anti - slip groove is opened at the top of the button (10).

6. The DC fuse pulling and closing tool for a photovoltaic DC busbar box according to claim 1, characterized in that, Symmetrical inclined surfaces are opened at the top and the bottom of one side of the push plate (12) far from the button (10).

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