Fuse special-purpose grounding wire with fire extinguishing protection function
By designing grounding wires for aluminum alloy connectors and fire protection components, the problem of low matching between grounding wires and equipment was solved, and flames were quickly extinguished when electric arcs ignite, improving the safety and convenience of power maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-08
- Publication Date
- 2026-03-13
AI Technical Summary
Existing grounding wires vary in shape and size due to different grounding points on different devices, resulting in small contact surfaces between the wire clamps and the equipment or inability to effectively hook them, posing safety hazards and inconvenience in use. At the same time, drop-out fuses may cause electric arcing during grounding operations, increasing the risk of accidents.
A special grounding wire for fuses with fire extinguishing protection function was designed. It adopts aluminum alloy connectors and fire extinguishing protection components to ensure a high degree of matching between the grounding clamp and the lower stationary contact of the drop-out fuse. The fire extinguishing medium is triggered by rotating the handle, and the sealing and reliable triggering are ensured by the spring and baffle structure.
It increases the contact area between the grounding wire and the equipment, ensuring simple operation and preventing it from falling off easily. It can quickly extinguish flames caused by electric arcs, reduce the risk of accidents, and improve the safety of power maintenance.
Smart Images
Figure CN121663226A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of fuse grounding technology, specifically to a special grounding wire for fuses with fire extinguishing protection function. Background Technology
[0002] Fuse grounding technology is a technique that uses fuses in a circuit and, after the fuse blows, connects the relevant parts of the circuit to the ground. Its main function is to allow current to flow when the fuse is working normally, but to blow and cut off the current in the event of an overload or short circuit fault, thus connecting the faulty part to the ground through a grounding mechanism.
[0003] In current power maintenance and testing work, to ensure the safety of personnel, after verifying that the equipment maintenance and testing area is de-energized, a grounding wire needs to be installed to prevent the equipment from suddenly being energized. The existing grounding wires mostly use single-tongue and multi-tongue clamps with springs. Because the shape and size of different grounding parts of different equipment are different, the tongue clamps have a low matching degree, resulting in situations where the contact area between the clamp and the equipment grounding part is too small or the grounding part is too large to be hooked, which poses certain safety hazards and is not convenient to use.
[0004] Meanwhile, during grounding operations and line faults, drop-out fuses may generate electric arcs due to excessive current. These arcs can cause the insulation layer to burn, greatly increasing the risk of accidents.
[0005] Therefore, we propose a dedicated grounding wire for fuses with fire extinguishing protection function to solve the problems mentioned above. Summary of the Invention
[0006] The purpose of this invention is to provide a dedicated grounding wire for fuses with fire extinguishing and protection functions, in order to solve the problems mentioned in the background art. Existing grounding wires have low matching degree due to the different shapes and sizes of different grounding parts of different equipment, resulting in small contact surfaces between the wire clamp and the grounding part of the equipment, and grounding parts that are too large to be hooked, thus posing certain safety hazards and being inconvenient to use.
[0007] To achieve the above objectives, the present invention provides the following technical solution: a special grounding wire for fuses with fire extinguishing and protection functions, comprising a connector, a connecting ear, a connecting ear clip, a clamping plate clip, an operating rod through-hole, and a fire protection component. The connector is hook-shaped and made of aluminum alloy with a certain thickness. A connecting ear is connected to the top of the connector through a hole. The connecting ear passes horizontally through the connector. The connecting ear has downward-facing semi-circular ear plates on both sides. An operating rod is connected to the bottom of the connector through a hole. The operating rod passes through the connector through the operating rod through-hole at the bottom of the connector. The top of the operating rod is a connecting ear clip. The connecting ear clip is connected to the clamping plate clip at the lower end of the operating rod through a traction line and a spring. The connecting ear clip and the connecting ear are of equal length. The connecting ear clip is a concave semi-circle. The fire extinguishing and protection component is provided on the outer surface of the operating rod. The fire extinguishing and protection assembly includes a first fixing plate, the inner wall of the first fixing plate is fixedly connected to the outer surface of the operating rod, and a protective cylinder is fixedly connected to the inner wall of the first fixing plate near both sides. Two first connecting plates are fixedly connected to the inner walls of the two protective cylinders, and a first compression spring is provided on the outer surface of the four first connecting plates.
[0008] Preferably, when not in use, the mounting ear and mounting ear clamp are clamped together. When in use, the operator pulls the mounting ear clamp by gripping the clamping plate clamp to separate the mounting ear clamp from the mounting ear. After the grounding wire is connected to the lower stationary contact of the drop-out fuse, the clamping plate clamp is released, and the mounting ear and mounting ear clamp are clamped onto the lower stationary contact of the drop-out fuse, thus completing the grounding wire connection of the drop-out fuse.
[0009] Preferably, the hook connector is 135mm high and 14mm thick, the hook ear crossbar is 86mm long and 10mm in diameter, the semi-circular ear plates on both sides are 25mm high and 30mm wide, and the hook ear clip is 30mm wide. When not hooked, the hook ear clip is clamped to the hook ear.
[0010] Preferably, one end of each of the four first compression springs is fixedly connected to the outer surface of the four first connecting plates, and the other end of each of the four first compression springs is fixedly connected to a first baffle. The inner walls of the two protective cylinders are fixedly connected to partitions. Of the four first baffles, the outer surfaces of two of the first baffles are respectively attached to the inner walls of the two protective cylinders, and the outer surfaces of the other two first baffles are respectively attached to the outer surfaces of the two partitions.
[0011] Preferably, a first pipe is fixedly connected to one side of the outer surface of each of the two protective cylinders, a piston is slidably connected to the inner wall of each of the two first pipes, a second pipe is slidably connected to the inner wall of each of the two first pipes, one end of each of the two second pipes is fixedly connected to one side of the outer surface of each of the two pistons, a lead screw is fixedly connected to the center of one side of the outer surface of each of the two pistons, a threaded block is threadedly connected to the outer surface of each of the two lead screws, and the outer surface of each of the two threaded blocks is fixedly connected to the inner wall of each of the two second pipes near the other end.
[0012] Preferably, a fixed box is fixedly fitted on the outer surface of the operating rod near one end. A first gear is rotatably connected to the outer surface of the operating rod inside the fixed box. A rotating handle is fixedly connected to one side of the outer surface of the first gear. A second gear is rotatably connected to both inner walls of the fixed box. The outer surfaces of the two second gears mesh with the outer surfaces of the first gear. The outer surfaces of the two lead screws are fixedly connected to the inner walls of the two second gears near one end.
[0013] Preferably, a third pipe is fixedly connected to the other outer surface of each of the two protective cylinders, and a nozzle is fixedly connected to one end of each of the two third pipes. Two second connecting plates are fixedly connected to the outer surface of the through hole of the operating rod. The inner walls of the two second connecting plates are fixedly connected to the outer surfaces of the two third pipes respectively. A fourth pipe is fixedly connected to one end of the outer surface of each of the two first pipes.
[0014] Preferably, the inner walls of the two fourth pipes are each connected to a second fixing plate, and a second compression spring is provided on one side of the outer surface of each of the two second fixing plates. One end of each of the two second compression springs is fixedly connected to one side of the outer surface of each of the two second fixing plates, and the other end of each of the two second compression springs is fixedly connected to a second baffle. The outer surfaces of the two second baffles are respectively in contact with the inner walls of the two fourth pipes.
[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This device provides a special grounding wire for fuses with fire extinguishing and protection functions. It is specifically designed for drop-out fuses. The grounding wire clamp has a high degree of matching with the shape of the lower stationary contact of the drop-out fuse, and the conductor contact area is large. It is easy to operate and not easy to fall off. It solves the problem that the existing grounding wires have a low matching degree due to the different shapes and sizes of different grounding parts of different equipment, resulting in a small contact area between the clamp and the equipment grounding part, or the grounding part being too large to be hooked, which poses certain safety hazards and is inconvenient to use.
[0016] 2. This device is equipped with a fire extinguishing protection component. When the drop-out fuse is in the grounding operation or a line fault occurs, the excessive current will generate an electric arc, which will cause the insulation layer to burn. At this time, rotating the handle will drive the first gear and the second gear to rotate, and the screw will push the piston to squeeze the fire extinguishing medium, thereby quickly releasing the fire extinguishing medium and reducing the risk of the accident escalating.
[0017] 3. This device, through the setting of spring and baffle structure, can ensure the sealing of the fire extinguishing medium storage, and does not affect the normal operation of the grounding wire. It can be reliably triggered in an emergency, improving the safety of power maintenance operations. Attached Figure Description
[0018] Figure 1 This is a front perspective view of a special grounding wire for fuses with fire extinguishing protection function according to the present invention; Figure 2 This is a perspective view of the mounting lug portion of a fuse-specific grounding wire with fire extinguishing and protection function according to the present invention. Figure 3 This is a perspective view of the operating rod through-hole portion of a fuse-specific grounding wire with fire extinguishing and protection function according to the present invention. Figure 4 This is a perspective view of the clamping plate of a fuse-specific grounding wire with fire extinguishing and protection function according to the present invention. Figure 5 This is a perspective view of the hanging ear clip portion of a fuse-specific grounding wire with fire extinguishing and protection function according to the present invention. Figure 6 This is a perspective view of a portion of a fire extinguishing protection component of a fuse-specific grounding wire with fire extinguishing protection function according to the present invention. Figure 7 This is a sectional perspective view of the fixing box portion of a fuse-specific grounding wire with fire extinguishing protection function according to the present invention. Figure 8 This is a three-dimensional cross-sectional view of the protective cylinder structure of a fuse-specific grounding wire with fire extinguishing protection function according to the present invention. Figure 9 for Figure 8 Enlarged 3D view of point A in the middle.
[0019] In the picture: 1. Hook connector; 2. Hook ear; 3. Hook ear clip; 4. Clamping plate clamp; 5. Operating lever through hole; 6. Fire extinguishing protection assembly; 601. First fixing plate; 602. Protective cylinder; 603. First connecting plate; 604. First compression spring; 605. First baffle; 606. Partition; 607. First pipe; 608. Piston; 609. Second pipe; 610. Lead screw; 611. Threaded block; 612. Fixing box; 613. First gear; 614. Rotating handle; 615. Second gear; 616. Third pipe; 617. Nozzle; 618. Second connecting plate; 619. Fourth pipe; 620. Second fixing plate; 621. Second compression spring; 622. Second baffle. Detailed Implementation
[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0021] Please see Figure 1-9 This invention provides a technical solution: a special grounding wire for fuses with fire extinguishing and protection functions, including a connector 1, a connecting ear 2, a connecting ear clip 3, a clamping plate clip 4, an operating rod through-hole 5, and a fire extinguishing and protection component 6. The connector 1 is hook-shaped and made of aluminum alloy with a certain thickness. A connecting ear 2 is perforated at the top of the connector 1 and passes horizontally through the connector 1. The connecting ear 2 has downward-facing semi-circular ear plates on both sides. An operating rod is perforated at the bottom of the connector 1 and passes through the operating rod through-hole 5 at the bottom of the connector 1. The top of the operating rod is a connecting ear clip 3, which is connected to the clamping plate clip 4 at the lower end of the operating rod via a traction line and a spring. The connecting ear clip 3 and the connecting ear 2 are of equal length. The clamp 3 is a concave semi-circle. When not in use, the hanging ear 2 and the hanging ear clamp 3 are clamped together. When in use, the operator pulls the hanging ear clamp 3 by gripping the clamping plate 4, so that the hanging ear clamp 3 is separated from the hanging ear 2. After the grounding wire is connected to the lower stationary contact of the drop-out fuse, the clamping plate 4 is released, and the hanging ear 2 and the hanging ear clamp 3 are clamped on the lower stationary contact of the drop-out fuse, thus completing the grounding wire connection of the drop-out fuse. The connecting head 1 is 135mm high and 14mm thick. The horizontal bar of the hanging ear 2 is 86mm long and 10mm in diameter. The semi-circular ear plates on both sides are 25mm high and 30mm wide. The hanging ear clamp 3 is 30mm wide. When not in use, the hanging ear clamp 3 is clamped together with the hanging ear 2.
[0022] In this embodiment, when not being connected, the connecting ear 2 and the connecting ear clip 3 are clamped together. When connecting, the operator pulls the connecting ear clip 3 by gripping the clamping plate 4, separating the connecting ear clip 3 from the connecting ear 2. The connecting ear 2 is then aligned with the lower stationary contact of the drop-out fuse for connection. After the crossbar of the connecting ear 2 is engaged into the hook of the lower stationary contact of the fuse, the clamping plate 4 is released. The connecting ear clip 3 springs back to its original state under the action of the lead wire and spring in the operating rod. The connecting ear 2 and the connecting ear clip 3 are clamped onto the lower stationary contact of the drop-out fuse, completing the grounding wire connection of the drop-out fuse. When removing the connecting wire after connection, the operator only needs to grip and clamp the clamping plate 4. The plate clamp 4 separates the hook ear 2 and the hook ear clamp 3. The hook ear 2 can be moved out of the position of the lower stationary contact hook of the fuse. This device provides a special grounding wire for fuses with fire extinguishing protection function. It is specially designed for drop-out fuses. The grounding wire clamp has a high degree of matching with the shape of the lower stationary contact of the drop-out fuse. The conductor contact area is large. It is easy to operate and not easy to fall off. It solves the problem that the existing grounding wire has a low matching degree due to the different shapes and sizes of different grounding parts of different equipment, resulting in a small contact area between the clamp and the equipment grounding part, or the grounding part is too large to be hooked, which poses certain safety hazards and is inconvenient to use.
[0023] like Figure 1-9As shown, a fire extinguishing protection component 6 is provided on the outer surface of the operating lever. The fire extinguishing protection component 6 includes a first fixing plate 601. The inner wall of the first fixing plate 601 is fixedly connected to the outer surface of the operating lever. Protective cylinders 602 are fixedly connected to the inner walls of the first fixing plate 601 near both sides. Two first connecting plates 603 are fixedly connected to the inner walls of the two protective cylinders 602. A first compression spring 604 is provided on the outer surface of each of the four first connecting plates 603. A first pipe 607 is fixedly connected to one side of the outer surface of each of the two protective cylinders 602. A piston 608 is slidably connected to the inner wall of each of the two first pipes 607. A second pipe 609 is slidably connected to the inner wall of each of the two first pipes 607. One end of each of the two second pipes 609 is fixedly connected to one side of the outer surface of each of the two pistons 608. A lead screw 610 is fixedly connected to the center of one side of the outer surface of each of the two pistons 608. Threaded blocks 611 are threadedly connected to the outer surfaces of each of the two lead screws 610. The outer surfaces of the two threaded blocks 611 are threaded to the two second pipes 609. The inner wall of 09 is fixedly connected near the other end. The outer surface of the operating rod is fixedly fitted with a fixed box 612 near one end. The outer surface of the operating rod is rotatably connected to the first gear 613 inside the fixed box 612. A rotating handle 614 is fixedly connected to one side of the outer surface of the first gear 613. The inner walls of both sides of the fixed box 612 are rotatably connected to the second gear 615. The outer surfaces of the two second gears 615 mesh with the outer surfaces of the first gear 613. The outer surfaces of the two lead screws 610 are fixedly connected to the inner walls of the two second gears 615 near one end. The outer surfaces of the two protective cylinders 602 are fixedly connected to the third pipe 616. One end of the two third pipes 616 is fixedly connected to the nozzle 617. The outer surface of the through hole 5 of the operating rod is fixedly connected to two second connecting plates 618. The inner walls of the two second connecting plates 618 are fixedly connected to the outer surfaces of the two third pipes 616. The outer surfaces of the two first pipes 607 are fixedly connected to the fourth pipe 619 near one end.
[0024] In this embodiment, when the drop-out fuse experiences grounding operation or line fault, and an arc is generated due to excessive current, causing the insulation layer to burn, the operator rotates the handle 614. Rotating the handle 614 drives the first gear 613 to rotate, which in turn drives the meshing second gear 615 to rotate. The second gear 615 then drives the lead screw 610 to rotate, which in turn drives the threaded block 611 connected to its outer surface to rotate. The threaded block 611 is limited by the second pipe 609 and moves linearly along the outer surface of the lead screw 610. The threaded block 611 causes the outer surface of the second pipe 609 to slide along the inner wall of the first pipe 607. Simultaneously, the second pipe 609 causes the outer surface of the piston 608 to slide along the inner wall of the first pipe 607. At this time, the piston 608 located in the first pipe 607... The gas inside 07 is compressed, and the pressure gradually increases. The fire extinguishing dry powder located between the partition 606 and the protective cylinder 602 will break through the first baffle 605 under the gas pressure and flow through the interior of the protective cylinder 602 to the third pipe 616. Then, it will be sprayed onto the surface of the burning insulation layer through the nozzle 617. The dry powder quickly covers the fire source, isolates the air and inhibits the combustion reaction, and quickly extinguishes the flame caused by the electric arc, preventing the fire from spreading to other parts of the line and damaging the equipment. This device is equipped with a fire extinguishing protection component 6. When the drop-out fuse is in grounding operation or there is a line fault, the electric arc is generated due to excessive current, which causes the insulation layer to burn. At this time, rotating the handle 614 drives the first gear 613 and the second gear 615 to rotate. The screw 610 pushes the piston 608 to squeeze the fire extinguishing medium, thereby quickly releasing the fire extinguishing medium and reducing the risk of the accident escalating.
[0025] like Figure 1-9 As shown, one end of each of the four first compression springs 604 is fixedly connected to the outer surface of the four first connecting plates 603, and the other end of each of the four first compression springs 604 is fixedly connected to a first baffle 605. The inner walls of the two protective cylinders 602 are fixedly connected to partitions 606. The outer surfaces of two of the first baffles 605 are respectively attached to the inner walls of the two protective cylinders 602, and the outer surfaces of the other two first baffles 605 are respectively attached to the outer surfaces of the two partitions 606. The inner walls of the two fourth pipes 619 are each connected to a second fixing plate 620. A second compression spring 621 is provided on one side of the outer surface of each of the two second fixing plates 620. One end of each of the two second compression springs 621 is fixedly connected to one side of the outer surface of the two second fixing plates 620, and the other end of each of the two second compression springs 621 is fixedly connected to a second baffle 622. The outer surfaces of the two second baffles 622 are respectively attached to the inner walls of the two fourth pipes 619.
[0026] In this embodiment, when the screw 610 is rotated by turning the handle 614, the gas in the first pipe 607 is compressed, and the pressure gradually increases. The compressed gas then pushes the outer surface of one of the first baffles 605 away from the inner wall of the protective cylinder 602, causing the first baffle 605 to compress the first compression spring 604. At this time, the fire extinguishing dry powder between the partition 606 and the protective cylinder 602 will break through the other first baffle 605 under the gas pressure, causing the outer surface of the other first baffle 605 to no longer adhere to the inner wall of the partition 606. Simultaneously, it will compress the other first compression spring 604. The fire extinguishing dry powder will then flow through the interior of the protective cylinder 602 to the third pipe 616, and then be sprayed onto the burning insulation layer surface through the nozzle 617. The dry powder quickly covers the fire source. After the flames are extinguished, the operator rotates the handle 614 in the reverse direction. This causes the first gear 613 to drive the second gear 615 to rotate in the reverse direction, which in turn drives the lead screw 610 to rotate in the reverse direction. The lead screw 610 then causes the outer surface of the piston 608 to slide along the inner wall of the first pipe 607. At this point, the outer surface of one of the first baffles 605 will be in close contact with the inner wall of the protective cylinder 602, while the outer surface of the second baffle 622 will no longer be in contact with the inner wall of the fourth pipe 619. External gas will then flow into the interior of the first pipe 607 through the gap between the second baffle 622 and the fourth pipe 619. This device, by setting up a compression spring and baffle structure, can ensure the sealing of the extinguishing medium storage without affecting the normal operation of the grounding wire. It can be reliably triggered in an emergency, improving the safety of power maintenance operations.
[0027] The usage and working principle of this device are as follows: When not in use, the mounting ear 2 and mounting ear clip 3 are clamped together. When in use, the operator pulls the mounting ear clip 3 by gripping the clamping plate 4, separating the mounting ear clip 3 from the mounting ear 2. The mounting ear 2 is then aligned with the lower stationary contact of the drop-out fuse for connection. After the crossbar of the mounting ear 2 is engaged into the hook of the lower stationary contact of the fuse, the clamping plate 4 is released. The mounting ear clip 3 springs back to its original state under the action of the lead wire and spring in the operating rod. The mounting ear 2 and mounting ear clip 3 are clamped onto the lower stationary contact of the drop-out fuse, completing the grounding wire connection of the drop-out fuse. When removing the connection wire after connection, the operator only needs to grip the clamping plate 4 to separate the mounting ear 2 and mounting ear clip 3, and then remove the mounting ear 2 from the fuse. The lower stationary contact hook position is sufficient. When the drop-out fuse is in grounding operation or during a line fault, an arc is generated due to excessive current, causing the insulation layer to burn. At this time, the operator rotates the rotary handle 614. Rotating the handle 614 will drive the first gear 613 to rotate. When the first gear 613 rotates, it will drive the meshing second gear 615 to rotate. The rotation of the second gear 615 will drive the lead screw 610 to rotate. The lead screw 610 will drive the threaded block 611 connected to the outer surface to rotate. The threaded block 611 is limited by the second pipe 609. The threaded block 611 will move linearly along the outer surface of the lead screw 610. The threaded block 611 will drive the outer surface of the second pipe 609 to slide along the inner wall of the first pipe 607. At the same time, the second... Pipe 609 causes the outer surface of piston 608 to slide along the inner wall of first pipe 607. At this time, the gas in first pipe 607 is compressed, and the pressure gradually increases. The compressed gas pushes the outer surface of one of the first baffles 605 out of contact with the inner wall of protective cylinder 602. The first baffle 605 then compresses the first compression spring 604. At this time, the dry extinguishing powder between partition 606 and protective cylinder 602 will break through the other first baffle 605 under the gas pressure. The outer surface of the other first baffle 605 will no longer be in contact with the inner wall of partition 606, and at the same time, it will compress the other first compression spring 604. At this time, the dry extinguishing powder will flow through the interior of protective cylinder 602 to the third pipe. 616, and then sprayed onto the burning insulation layer surface through nozzle 617. The dry powder quickly covers the fire source. After the flame is extinguished, the operator rotates the handle 614 in the opposite direction. At this time, the first gear 613 will drive the second gear 615 to rotate in the opposite direction. The second gear 615 will drive the lead screw 610 to rotate in the opposite direction. The lead screw 610 will drive the outer surface of the piston 608 to slide along the inner wall of the first pipe 607. At this time, the outer surface of one of the first baffles 605 will be in close contact with the inner wall of the protective cylinder 602, while the outer surface of the second baffle 622 will no longer be in contact with the inner wall of the fourth pipe 619. At this time, the external gas will flow into the interior of the first pipe 607 through the gap between the second baffle 622 and the fourth pipe 619.
[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A special grounding wire for fuses with fire extinguishing protection function, characterized in that: The device includes a hook connector (1), a hook ear (2), a hook ear clip (3), a clamping plate clip (4), an operating rod through hole (5), and a fire extinguishing protection component (6). The hook connector (1) is hook-shaped and made of aluminum alloy with a certain thickness. A hook ear (2) is connected to the top of the hook connector (1). The hook ear (2) passes through the hook connector (1) horizontally. There are downward semi-circular ear plates on both sides of the hook ear (2). An operating rod is connected to the bottom of the hook connector (1). The operating rod passes through the operating rod through hole (5) at the bottom of the hook connector (1). The top of the operating rod is a hook ear clip (3). The hook ear clip (3) is connected to the clamping plate clip (4) at the lower end of the operating rod through a traction line and a spring. The hook ear clip (3) and the hook ear (2) are the same length. The hook ear clip (3) is a concave semi-circle. The fire extinguishing protection component (6) is provided on the outer surface of the operating rod. The fire extinguishing and protection component (6) includes a first fixing plate (601), the inner wall of the first fixing plate (601) is fixedly connected to the outer surface of the operating rod, and a protective cylinder (602) is fixedly connected to the inner wall of the first fixing plate (601) near both sides. Two first connecting plates (603) are fixedly connected to the inner walls of the two protective cylinders (602), and a first compression spring (604) is provided on the outer surface of the four first connecting plates (603).
2. The grounding wire for a fuse with fire extinguishing protection function according to claim 1, characterized in that: When not in use, the hanging ear (2) and the hanging ear clip (3) are clamped together. When in use, the operator pulls the hanging ear clip (3) by gripping the clamping plate clip (4) to separate the hanging ear clip (3) from the hanging ear (2). After the grounding wire is connected to the lower stationary contact of the drop-out fuse, the clamping plate clip (4) is released, and the hanging ear (2) and the hanging ear clip (3) are clamped on the lower stationary contact of the drop-out fuse, thus completing the grounding wire connection of the drop-out fuse.
3. A special grounding wire for fuses with fire extinguishing protection function according to claim 1, characterized in that: The hook connector (1) is 135mm high and 14mm thick. The hook ear (2) has a crossbar length of 86mm and a diameter of 10mm. The semi-circular ear plates on both sides are 25mm high and 30mm wide. The hook ear clip (3) is 30mm wide. When not hooked, the hook ear clip (3) is clamped to the hook ear (2).
4. A special grounding wire for fuses with fire extinguishing protection function according to claim 1, characterized in that: One end of each of the four first compression springs (604) is fixedly connected to the outer surface of the four first connecting plates (603), and the other end of each of the four first compression springs (604) is fixedly connected to a first baffle (605). The inner walls of the two protective cylinders (602) are fixedly connected to a partition (606). The outer surfaces of two of the first baffles (605) are respectively attached to the inner walls of the two protective cylinders (602), and the outer surfaces of the other two first baffles (605) are respectively attached to the outer surfaces of the two partitions (606).
5. A special grounding wire for fuses with fire extinguishing protection function according to claim 4, characterized in that: One outer surface of each of the two protective cylinders (602) is fixedly connected to a first pipe (607). The inner walls of the two first pipes (607) are slidably connected to pistons (608). The inner walls of the two first pipes (607) are slidably connected to second pipes (609). One end of each of the two second pipes (609) is fixedly connected to one outer surface of each of the two pistons (608). One outer surface of each of the two pistons (608) is fixedly connected to a lead screw (610) at the center. The outer surfaces of the two lead screws (610) are threadedly connected to threaded blocks (611). The outer surfaces of the two threaded blocks (611) are fixedly connected to the inner walls of the two second pipes (609) near the other end.
6. A special grounding wire for fuses with fire extinguishing protection function according to claim 5, characterized in that: A fixed box (612) is fixedly fitted on the outer surface of the operating rod near one end. A first gear (613) is rotatably connected to the outer surface of the operating rod inside the fixed box (612). A rotating handle (614) is fixedly connected to one side of the outer surface of the first gear (613). A second gear (615) is rotatably connected to the inner walls of both sides of the fixed box (612). The outer surfaces of the two second gears (615) mesh with the outer surfaces of the first gear (613). The outer surfaces of the two lead screws (610) are fixedly connected to the inner walls of the two second gears (615) near one end.
7. A special grounding wire for fuses with fire extinguishing protection function according to claim 6, characterized in that: The outer surfaces of the two protective cylinders (602) are fixedly connected to a third pipe (616), and one end of each of the two third pipes (616) is fixedly connected to a nozzle (617). The outer surface of the through hole (5) of the operating rod is fixedly connected to two second connecting plates (618). The inner walls of the two second connecting plates (618) are fixedly connected to the outer surfaces of the two third pipes (616) respectively. The outer surfaces of the two first pipes (607) are fixedly connected to a fourth pipe (619) near one end.
8. A special grounding wire for fuses with fire extinguishing protection function according to claim 7, characterized in that: The inner walls of the two fourth pipes (619) are each connected to a second fixing plate (620). A second compression spring (621) is provided on one side of the outer surface of each of the two second fixing plates (620). One end of each of the two second compression springs (621) is fixedly connected to one side of the outer surface of each of the two second fixing plates (620). The other end of each of the two second compression springs (621) is fixedly connected to a second baffle (622). The outer surfaces of the two second baffles (622) are respectively in contact with the inner walls of the two fourth pipes (619).