Direct current combiner fuse base opener

Abstract

The utility model discloses a DC bus box fuse base opening and closing device belongs to photovoltaic power station operation and maintenance tool technical field. The opening and closing device includes insulating handle and the opening and closing head of installation at its one end, the opening and closing head is C type structure, including the operating board and the force plate of opposite setting, the operating board's end is fixed with a plurality of towards the force plate extension's dog -claw. The utility model uses C type opening and closing head as lever, through the insulating handle of down -pressing or prying L type, can safely, labor -savingly complete the pull -off or close up operation of fuse base, effectively guarantees the personal safety of operating personnel, and greatly promotes operation and maintenance efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of photovoltaic power station operation and maintenance safety tools, specifically relating to a DC combiner box fuse base opener / closer. Background Technology

[0002] In the daily operation and maintenance of centralized photovoltaic power plants, the DC combiner box, as a key device for collecting DC power from photovoltaic strings, requires routine and frequent maintenance involving the opening and closing of its internal fuse bases. Traditional operating methods typically require maintenance personnel to manually operate the fuses while wearing 1kV insulated gloves, which is not only inefficient but also poses various safety hazards and operational inconveniences.

[0003] First, the internal electrical environment of a DC combiner box is complex. Especially when there are abnormal conditions such as short circuits or parasitic voltages in the string branches, direct contact operation can easily lead to electric shock risks, seriously threatening the personal safety of workers. Second, insulated gloves are easily damaged by sharp parts inside the box during frequent operation, increasing the cost of safety equipment and reducing the reliability of insulation protection. Furthermore, manual operation makes it difficult to ensure that personnel maintain an effective safe distance from live parts, especially within the confined space of the combiner box, further increasing the operational risks.

[0004] Currently, the industry lacks a portable tool specifically designed for opening and closing the fuse base of DC combiner boxes. Existing operating methods are significantly inadequate in terms of safety, practicality, and efficiency. Therefore, there is an urgent need to develop a dedicated tool that is simple in structure, low in cost, and capable of non-contact operation to improve the safety and efficiency of maintenance work, while reducing the wear and tear and maintenance costs of safety tools. Utility Model Content

[0005] The present invention aims to provide a DC combiner box fuse base switch to solve the technical problems of high risk of electric shock, easy wear and tear of safety tools and low operating efficiency when maintenance personnel directly operate the fuse base in the prior art.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A DC combiner box fuse base switch includes an insulating handle and a switching head, with the switching head installed at the end of the insulating handle. The switching head has a C-shaped structure and includes an operating plate and a support plate. The operating plate is located above the support plate, and several claws are fixed at the end of the operating plate. All the claws are arranged side by side at intervals, and each claw extends toward the support plate.

[0007] Furthermore, the insulated handle has an L-shaped structure.

[0008] Furthermore, the number of grippers is three.

[0009] Furthermore, the end of the chuck is fixed to the end of the operating plate by screws.

[0010] Furthermore, the opening and closing head is integrally formed with the insulated handle.

[0011] Furthermore, the opening and closing head is made of high-strength insulating material.

[0012] Compared with existing technologies, the beneficial effects of this utility model are as follows: The DC combiner box fuse base opener provided by this utility model, through a lever-type tool composed of an insulated handle and a C-shaped opening and closing head, enables non-contact operation between maintenance personnel and live equipment, fundamentally avoiding the risk of electric shock caused by direct operation and greatly improving work safety; at the same time, its unique structural design makes the operation process labor-saving and efficient, especially by setting multiple parallel claws, which can realize the synchronous opening and closing of multiple fuses, significantly improving the work efficiency of daily operation and maintenance of photovoltaic power stations; in addition, the tool has a simple structure and low manufacturing cost, which not only avoids the frequent wear and tear of safety tools such as insulated gloves, but also makes it easy to popularize and configure in the site, and has extremely high practicality and promotion value. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is an isometric view of the DC combiner box fuse base switch of this utility model; Figure 2 This is a schematic diagram of the opening and closing head of this utility model. Detailed Implementation

[0014] 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.

[0015] The present invention will be further described in detail below with reference to the embodiments.

[0016] like Figure 1 and Figure 2 As shown, the DC combiner box fuse base opener of this utility model mainly consists of two parts: an insulating handle 1 and an opening / closing head 2.

[0017] The insulated handle 1 is made of high-strength epoxy resin or other high-quality insulating materials, and its overall design is L-shaped. This design not only provides the operator with a comfortable grip, but more importantly, it forms a natural power arm, allowing for easy application of force even in confined spaces, achieving labor-saving and efficient operation.

[0018] The opening / closing head 2 is fixedly mounted on the end of the insulating handle 1. In this embodiment, the opening / closing head 2 and the insulating handle 1 are preferably manufactured using an integral molding process, such as one-time injection molding through a mold, which ensures the integrity of the overall structural strength and insulation performance. The opening / closing head 2 is also made of high-strength insulating material, such as nylon or equivalent engineering plastics, to ensure operational safety.

[0019] The opening / closing head 2 has a C-shaped structure, resembling a clip or hook. It specifically includes an operating plate 3 and a support plate 4 arranged vertically opposite each other. The operating plate 3 is located above the support plate 4.

[0020] At the free end of the operating plate 3, several claws 6 are fixedly installed by screws 5. In this embodiment, three claws 6 are preferably provided, arranged side by side at equal intervals. Each claw 6 is a rod-shaped extension towards the load-bearing plate 4. This design allows the claws 6 to accurately hook onto the insulating handle at the top of the fuse.

[0021] When it is necessary to disconnect a fuse (pull-out operation): The operator holds the end of the insulated handle 1 with one hand, maintaining a safe distance. Align the C-shaped opening of the opening / closing head 2 with the target fuse, so that the claw 6 at the end of the operating plate 3 hooks onto one side of the fuse handle from above. Simultaneously, the free end of the support plate 4 is securely pressed against the side edge of the fuse base, acting as a stable fulcrum. At this point, the entire opening / closing device forms a lever system with the end of the support plate 4 as the fulcrum and the insulated handle 1 as the lever arm. The operator gently presses down on the insulated handle 1, and through the lever action, the fuse can be easily pulled out of its base, achieving a safe circuit disconnection. Due to the design of the three claws 6, this tool can operate three parallel fuses simultaneously, greatly improving maintenance efficiency.

[0022] When it is necessary to connect the fuse (close operation): The operator holds the insulated handle 1. Place the end of the support plate 4 below the fuse handle and use it as the point of force. Push the insulated handle 1 upwards, and the support plate 4 will be used to smoothly push the fuse into the stationary contact of the base until a "click" is heard, indicating that it is fully inserted and making good contact, and the circuit is connected.

[0023] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] 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 DC combiner box fuse base switch, characterized in that: It includes an insulated handle and an opening / closing head, with the opening / closing head installed at the end of the insulated handle; the opening / closing head has a C-shaped structure and includes an operating plate and a support plate, with the operating plate located above the support plate, and several claws fixed at the end of the operating plate, all of which are arranged side by side at intervals, and each claw extends toward the support plate.

2. The DC combiner box fuse base switch according to claim 1, characterized in that: The insulated handle has an L-shaped structure.

3. The DC combiner box fuse base switch according to claim 2, characterized in that: The number of grippers is three.

4. The DC combiner box fuse base switch according to claim 3, characterized in that: The end of the chuck is fixed to the end of the control panel by screws.

5. The DC combiner box fuse base switch according to claim 4, characterized in that: The opening and closing head is integrally formed with the insulated handle.

6. The DC combiner box fuse base switch according to claim 5, characterized in that: The opening and closing head is made of high-strength insulating material.

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