A suspension limiting type drop-out high-voltage fuse

Abstract

The application discloses a suspension limiting type drop-out high-voltage fuse, belonging to the technical field of high-voltage fuses, which comprises a fuse and a connecting plate, the side surface of the fuse is fixedly connected with a mounting plate, the upper surface of the mounting plate is fixedly connected with a fixed block, the surface of the connecting plate is provided with a mounting groove, and the upper surface of the connecting plate is fixedly connected with a butt joint block; an inner rod is slidably arranged in the inner portion of the working block. In the butt joint process, the mounting plate on the surface of the fuse is inserted into the mounting groove on the surface of the connecting plate, then the butt joint block and the fixed block are connected through bolts, and in this process, the push rod pushes the guide groove, at this time, the working block rotates and expands around the connecting shaft, the working block drives the long pin and the bird repelling piece to synchronously expand, meanwhile, the locking assembly releases the bird repelling piece, so that the bird repelling piece rotates and swings under the action of wind force and gravity, birds can be efficiently repelled, and the protection device is achieved.

Description

Technical Field

[0001] This invention relates to the field of high-voltage fuse technology, specifically to a suspended limiting type drop-out high-voltage fuse. Background Technology

[0002] The function of a high-voltage fuse is to interrupt the fault current by melting the fuse wire itself when an overload or short-circuit fault occurs in the circuit, protecting electrical equipment such as transformers and lines from damage, and isolating the fault point to ensure the safe operation of the system. A drop-out high-voltage fuse is a specific structural form of a high-voltage fuse. In addition to its fusing protection function, it provides a clear disconnection point through the drop-out action of the fuse tube, making it easy for operators to observe. For example, Chinese invention patent application number 202211104798.5, filed on 2022-09-09, describes an easy-to-install drop-out high-voltage fuse. In use, the drop-out high-voltage fuse body is mounted on an elastic connection assembly. A second drive assembly drives a bidirectional screw to rotate, which in turn moves a sliding plate inward. A second clamping assembly on the sliding plate clamps the drop-out high-voltage fuse body, allowing for rapid installation. The clamping process and the setting of the elastic connection component can position the drop-out high-voltage fuse body, thereby ensuring the rapid fixing and installation of the drop-out high-voltage fuse and facilitating the use of the device; the first drive component drives the rotating rod to rotate, the rotating rod drives the connecting box to rotate, and the connecting box synchronously drives the connecting slide and the clamping drop-out high-voltage fuse body to rotate, which can easily adjust the horizontal position of the drop-out high-voltage fuse body and facilitate its use; there is also a Chinese utility model patent application with application number 202023010387.9 and application date of 2020-12-14, which describes a drop-out high-voltage fuse with a simple structure and low production cost; it is equipped with a spring mechanism, which allows the lower contact to be stably installed in the arc groove. After installation, the structure is not easy to loosen and is more aesthetically pleasing. Moreover, the springs of the spring mechanism abut against each other, making the structure more stable and ensuring good contact between the spring mechanism and the lower contact;

[0003] During use, birds are frequently active and often perch or nest on fuses and surrounding power facilities. Bird droppings can contaminate the surface of insulators, causing flashover discharge and corroding equipment. Therefore, bird protection for fuses is extremely important. If proper bird deterrent components are not installed, birds will stay and leave droppings. At the same time, birds will cause phase-to-phase short circuits when they fly. In addition, bird nests and other debris may touch live parts, ultimately causing line tripping, equipment damage, or even large-scale power outages. Summary of the Invention

[0004] The purpose of this invention is to provide a suspended limit type drop-out high-voltage fuse to solve the problems mentioned in the background art, such as the lack of a reasonable bird deterrent component, bird droppings, phase-to-phase short circuits caused by birds flying, and the possibility of bird nests and other debris touching live parts, which may ultimately lead to line tripping, equipment damage, or even large-scale power outages.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a suspended limiting type drop-out high-voltage fuse, comprising a fuse and a connecting plate, wherein a mounting plate is fixedly connected to the side of the fuse, and a fixing block is fixedly connected to the upper surface of the mounting plate, and an installation groove is formed on the surface of the connecting plate, and a mating block is fixedly connected to the upper surface of the connecting plate, the mating block and the fixing block being connected by bolts; a vertical plate, the vertical plate being fixedly connected to the upper surface of the connecting plate, and a working block being movably connected to the vertical plate via a rotating assembly, and a long pin being movably connected to the front side of the working block, and a bird-repelling component being provided on the surface of the long pin; a material box, the material box being fixedly connected to the upper surface of the connecting plate, and a locking block being movably connected to the upper surface of the connecting plate via a telescopic assembly; an inner rod, the inner rod being slidably disposed inside the working block, and a friction plate being movably connected inside the inner rod, and a locking assembly being provided between the inner rod and the long pin, the locking assembly keeping the long pin stable when in operation.

[0006] Preferably, the rotating assembly includes a connecting shaft fixedly connected inside the vertical plate, and the working block is fixedly connected to the surface of the connecting shaft, and a push rod is fixedly connected to the surface of the fixed block.

[0007] Preferably, the lower surface of the working block is provided with a guide groove, the surface of the guide groove is inclined, and the guide groove corresponds one-to-one with the push rod. In addition, the end of the push rod is rotatably provided with a contact shaft.

[0008] Preferably, the telescopic assembly includes a limiting rod fixedly connected to the inner wall of the working block, and a counterweight plate is slidably disposed on the surface of the limiting rod. In addition, a force-bearing plate is slidably disposed inside the material box.

[0009] Preferably, an auxiliary block is fixedly connected to the upper surface of the connecting plate, and the locking block is slidably disposed inside the auxiliary block. A connecting pipe is fixedly connected to the surface of the material box, and the end of the connecting pipe is connected to the auxiliary block.

[0010] Preferably, the surface of the fixing block is provided with a slot, and the slot corresponds one-to-one with the fixing block.

[0011] Preferably, an outer plate is fixedly connected to the front side of the working block, and the long pin is rotatably arranged inside the outer plate. The locking assembly includes protrusions fixedly connected to both sides of the inner rod, and a return spring is fixedly connected to the surface of the protrusion. The other side of the return spring is fixedly connected to the inner wall of the working block. Initially, the inner rod is in contact with the surface of the counterweight plate, and the return spring is initially in a compressed state.

[0012] Preferably, the inner rod passes through the interior of the working block, and the interior of the working block has grooves that correspond one-to-one with the protrusions.

[0013] Preferably, the inner rod is fixedly connected to a column, and a torsion spring is fixedly connected to the surface of the column. The other side of the torsion spring is fixedly connected to the inner wall of the friction plate. In addition, the torsion spring is always in a compressed state. Furthermore, a deep groove is opened at the end of the long pin, and initially the surface of the friction plate is in contact with the inner wall of the deep groove.

[0014] Preferably, the friction plates are symmetrically distributed on both sides of the inner rod, and a positioning rod is fixedly connected to the upper surface of the connecting plate.

[0015] Compared with the prior art, the beneficial effects of this invention are as follows: Adopting a novel structural design, during the docking process, the mounting plate on the surface of the safety device is inserted into the mounting groove on the surface of the connecting plate. Then, the docking block and the fixing block are connected by bolts. During this process, the push rod pushes the guide groove, at which point the working block rotates and unfolds around the connecting shaft. The working block drives the long pin and the bird-repelling component to unfold synchronously, while the locking assembly releases the bird-repelling component, causing it to rotate and swing under the action of wind and gravity, effectively repelling birds and serving as a protective device. The specific details are as follows:

[0016] (1) In the process of docking, the mounting plate on the surface of the fuse is inserted into the mounting groove on the surface of the connecting plate. Then the docking block and the fixing block are connected by bolts. During this process, the push rod will push the guide groove. At this time, the working block, the long pin and the bird deterrent will rotate and unfold around the connecting shaft. Then the bird deterrent will rotate and swing under the action of wind and gravity, which can effectively deter birds and play the role of a protective device.

[0017] (2) In the process of the working block rotating to the tilt, the counterweight plate inside the working block slides down under its own weight. At this time, the counterweight plate will contact and push the force plate, and then the force plate will move into the material box. The force plate will push the water flow inside the material box into the auxiliary block. At this time, the card block moves towards the card slot under the action of water pressure and finally enters the card slot. Therefore, when the workers connect the fixing block and the connecting block with bolts, the stability is higher. Moreover, after the connection is complete, the card block and the card slot also play an auxiliary limiting role.

[0018] (3) When the working block is in a horizontal state, the inner rod is pushed by the counterweight plate. At this time, the protrusion squeezes the reset spring, and the friction plate is in an unfolded state under the action of the torsion spring. The friction plate is tightly attached to the deep groove. At this time, the long pin and the bird deterrent are locked. That is, the long pin and the bird deterrent will not rotate when not in use, which ensures stability and will not cause rotational collision with the connecting plate. Therefore, there will be no noise or additional wear. In addition, when not in use, the long pin and the bird deterrent are in a flat state, which will not occupy too much space and facilitate the actual operation of the staff.

[0019] Furthermore, during the rotation of the working block, after the counterweight plate slides out, the inner rod moves towards the inside of the working block under the action of the protrusion and the return spring. At this time, the friction plate is pushed by the inner wall of the working block, and the friction plate rotates around the column towards the inside of the inner rod. At this time, the friction plate no longer presses against the inner wall of the deep groove, and the long pin is released. At this time, the long pin and the bird deterrent can work normally. The bird deterrent will rotate and swing under the action of wind and gravity, achieving the effect of efficient bird deterrence and protecting the whole device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the connection structure between the fuse and the mounting plate of the present invention;

[0021] Figure 2 This is a schematic diagram of the connection structure between the mounting plate and the fixing block of the present invention;

[0022] Figure 3 This is a schematic diagram of the connection structure between the connecting plate and the vertical plate of the present invention;

[0023] Figure 4 This is a schematic diagram of the connection structure between the vertical plate and the connecting shaft of the present invention;

[0024] Figure 5 This is a schematic diagram of the distribution state of the guide grooves in this invention;

[0025] Figure 6 This is a schematic diagram of the connection structure between the material box and the load-bearing plate of the present invention;

[0026] Figure 7This is a schematic diagram of the distribution structure of the counterweight plate in this invention;

[0027] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point A in the middle;

[0028] Figure 9 This is a schematic diagram of the connection structure between the column and the friction plate of the present invention;

[0029] Figure 10 This is a schematic diagram of the structure of the long pin in the raised state of the present invention;

[0030] Figure 11 This is a schematic diagram of the friction plate in the retracted state of the present invention;

[0031] Figure 12 This is a schematic diagram of the distribution structure of the positioning rods in this invention.

[0032] In the diagram: 1. Safety device; 2. Mounting plate; 3. Connecting plate; 4. Fixing block; 5. Vertical plate; 6. Material box; 7. Connecting pipe; 8. Slot; 9. Connecting shaft; 10. Working block; 11. Guide groove; 12. Push rod; 13. Counterweight plate; 14. Force plate; 15. Auxiliary block; 16. Locking block; 17. External plate; 18. Long pin; 19. Limiting rod; 20. Inner rod; 21. Return spring; 22. Protrusion; 23. Groove; 24. Column; 25. Friction plate; 26. Torsion spring; 27. Deep groove; 28. Connecting block; 29. ​​Positioning rod. Detailed Implementation

[0033] 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.

[0034] The present invention provides the following technical solution: a suspended limiting type drop-out high voltage fuse.

[0035] Example 1: Please refer to Figures 1-12 It includes a fuse 1 and a connecting plate 3. A mounting plate 2 is fixedly connected to the side of the fuse 1, and a fixing block 4 is fixedly connected to the upper surface of the mounting plate 2. A mounting groove is opened on the surface of the connecting plate 3, and a mating block 28 is fixedly connected to the upper surface of the connecting plate 3. The mating block 28 and the fixing block 4 are connected by bolts.

[0036] Specifically, during the docking process, the mounting plate 2 on the surface of the fuse 1 is inserted into the mounting groove on the surface of the connecting plate 3, and then the docking block 28 and the fixing block 4 are connected by bolts. The operation process is quick and convenient, and the fuse 1 is finally suspended and put into operation.

[0037] The vertical plate 5 is fixedly connected to the upper surface of the connecting plate 3, and the vertical plate 5 is movably connected to the working block 10 through a rotating assembly; the rotating assembly includes a connecting shaft 9 fixedly connected inside the vertical plate 5, and the working block 10 is fixedly connected to the surface of the connecting shaft 9, and a push rod 12 is fixedly connected to the surface of the fixed block 4.

[0038] Specifically, during the docking process of fixing block 4 and docking block 28, fixing block 4 will drive push rod 12 to move synchronously.

[0039] The lower surface of the working block 10 is provided with a guide groove 11, and the surface of the guide groove 11 is inclined. The guide groove 11 corresponds to the push rod 12 one by one. In addition, the end of the push rod 12 is rotatably provided with a contact shaft.

[0040] Specifically, when the fixed block 4 moves the push rod 12, the push rod 12 pushes the guide groove 11 on the lower surface of the working block 10. At this time, the working block 10 will rotate around the connecting shaft 9 under the action of the thrust. The contact shaft at the end of the push rod 12 makes the push rod 12 work more conveniently. Finally, the working block 10, the long pin 18, and the bird deterrent component will rotate and unfold around the connecting shaft 9 (the specific shape of the bird deterrent component is as follows). Figure 4 As shown in the image, the bird deterrent then rotates and swings under the influence of wind and gravity, effectively deterring birds and serving as a protective device.

[0041] Material box 6 is fixedly connected to the upper surface of connecting plate 3, and the upper surface of connecting plate 3 is movably connected to a locking block 16 through a telescopic assembly; the telescopic assembly includes a limiting rod 19 fixedly connected to the inner wall of working block 10, and a counterweight plate 13 is slidably arranged on the surface of the limiting rod 19. In addition, a force-bearing plate 14 is slidably arranged inside the material box 6.

[0042] Specifically, during the rotation and tilting of the working block 10, the counterweight plate 13 inside the working block 10, under its own weight and the limiting action of the limiting rod 19, slides stably downwards inside the working block 10. When the counterweight plate 13 slides outwards, its outer end contacts the upper surface of the force plate 14, after which the counterweight plate 13 pushes and presses the force plate 14 (e.g., ...). Figure 7 and Figure 10 As shown), the force plate 14 then moves into the material box 6.

[0043] An auxiliary block 15 is fixedly connected to the upper surface of the connecting plate 3, and a locking block 16 is slidably arranged inside the auxiliary block 15. A connecting pipe 7 is fixedly connected to the surface of the material box 6, and the end of the connecting pipe 7 is connected to the auxiliary block 15.

[0044] Specifically, when the force plate 14 moves into the material box 6, the force plate 14 pushes the water flow inside the material box 6, so that the water flow is input into the auxiliary block 15 through the connecting pipe 7. At this time, the locking block 16 moves outward under the action of water pressure. Both the material box 6 and the auxiliary block 15 are equipped with sealing rings to keep the water body stable.

[0045] The surface of the fixing block 4 is provided with a slot 8, and the slot 8 corresponds one-to-one with the card block 16.

[0046] Specifically, when the locking block 16 moves outward from the auxiliary block 15 under the action of water pressure, the locking block 16 also moves towards the locking groove 8 and eventually enters the interior of the locking groove 8. As a result, when the workers connect the fixing block 4 and the connecting block 28 with bolts, the stability is higher. Moreover, after the connection is complete, the locking block 16 and the locking groove 8 also play an auxiliary limiting role.

[0047] The front side of the working block 10 is movably connected to a long pin 18, and the surface of the long pin 18 is provided with a bird deterrent. The front side of the working block 10 is fixedly connected to an outer plate 17, and the long pin 18 is rotatably provided inside the outer plate 17. The locking assembly includes protrusions 22 fixedly connected to both sides of the inner rod 20, and a return spring 21 is fixedly connected to the surface of the protrusions 22. The other side of the return spring 21 is fixedly connected to the inner wall of the working block 10. Initially, the inner rod 20 is in contact with the surface of the counterweight plate 13, and initially, the return spring 21 is in a compressed state.

[0048] Specifically, when the working block 10 is in a horizontal state, the inner rod 20 is pushed by the counterweight plate 13. At this time, the protrusion 22 squeezes the return spring 21, the friction plate 25 is in an unfolded state, and the friction plate 25 is tightly fitted with the deep groove 27. At this time, the long pin 18 and the bird deterrent are locked, that is, the long pin 18 and the bird deterrent will not rotate when not in use, ensuring stability and preventing them from interfering with the connecting plate 3.

[0049] The inner rod 20 is slidably disposed inside the working block 10, and the friction plate 25 is movably connected inside the inner rod 20. A locking component is provided between the inner rod 20 and the long pin 18. When the locking component is working, the long pin 18 is kept stable. The inner rod 20 passes through the inside of the working block 10, and the inside of the working block 10 is provided with grooves 23 that correspond one-to-one with the protrusions 22.

[0050] Specifically, during the rotation of the working block 10, after the counterweight plate 13 slides out, the inner rod 20 moves towards the inside of the working block 10 under the action of the protrusion 22 and the return spring 21. The protrusion 22 and the groove 23 stabilize the movement of the inner rod 20 and prevent it from falling off.

[0051] An internal column 24 is fixedly connected to the inner rod 20, and a torsion spring 26 is fixedly connected to the surface of the column 24. The other side of the torsion spring 26 is fixedly connected to the inner wall of the friction plate 25. In addition, the torsion spring 26 is always in a compressed state. Furthermore, a deep groove 27 is opened at the end of the long pin 18. Initially, the surface of the friction plate 25 is in contact with the inner wall of the deep groove 27. The friction plates 25 are symmetrically distributed on both sides of the inner rod 20. A positioning rod 29 is fixedly connected to the upper surface of the connecting plate 3.

[0052] Specifically, when the inner rod 20 is driven by the reset spring 21 and the protrusion 22 to move into the working block 10, the friction plate 25 moves synchronously with the inner rod 20. At this time, the friction plate 25 is pushed by the inner wall of the working block 10, and the friction plate 25 rotates around the column 24 towards the inner rod 20. At this time, the friction plate 25 no longer presses against the inner wall of the deep groove 27, and the long pin 18 is released. At this time, the long pin 18 and the bird deterrent can work normally. The bird deterrent will rotate and swing under the action of wind and gravity, achieving the effect of efficient bird deterrence and protecting the whole device.

[0053] The torsion spring 26 is always in a compressed state, and the friction plate 25 always tends to rotate outward. After the working block 10 rotates to its original position, the worker pushes the counterweight plate 13 to its original position. At this time, the inner rod 20 is pushed by the counterweight plate 13 again, and the column 24 and the friction plate 25 move to the outside of the working block 10 again. At this time, the friction plate 25 rotates and unfolds again, fitting against the deep groove 27, and locking the long pin 18 by friction.

[0054] Afterwards, the staff can loosen the connection between the fixing block 4 and the docking block 28 with bolts, and then pull the locking block 16 to move the locking block 16 into the auxiliary block 15. When the locking block 16 moves back into the auxiliary block 15, it will push the excess water into the material box 6, so that the water pressure inside the material box 6, the connecting pipe 7 and the auxiliary block 15 returns to the initial uncompressed state, thereby resetting the force plate 14 for the next use. When the locking block 16 moves, the moving distance is limited by the water pressure and the locking groove 8, so the operation is stable and there will be no excessive movement.

[0055] After the fixed block 4 and push rod 12 are removed, the working block 10 loses the pushing force of push rod 12. At this time, the working block 10 rotates around the connecting shaft 9 under its own gravity, and eventually the lower surface of the working block 10 will rotate to contact the positioning rod 29 (e.g., Figure 12As shown), at this time, the working block 10 returns to its initial state, which facilitates the next contact between the guide groove 11 and the push rod 12.

[0056] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0057] 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 suspended limiting type drop-out high voltage fuse, comprising a fuse (1) and a connecting plate (3), wherein a mounting plate (2) is fixedly connected to the side of the fuse (1), and a fixing block (4) is fixedly connected to the upper surface of the mounting plate (2), and an installation groove is provided on the surface of the connecting plate (3), and a mating block (28) is fixedly connected to the upper surface of the connecting plate (3), wherein the mating block (28) and the fixing block (4) are connected by bolts; Its features are: Vertical plate (5), the vertical plate (5) is fixedly connected to the upper surface of the connecting plate (3), and the vertical plate (5) is movably connected to the working block (10) through the rotating assembly, and the front side of the working block (10) is movably connected to the long pin (18), and the surface of the long pin (18) is provided with bird deterrent parts; Material box (6), the material box (6) is fixedly connected to the upper surface of the connecting plate (3), and the upper surface of the connecting plate (3) is movably connected to the locking block (16) through the telescopic component. The inner rod (20) is slidably disposed inside the working block (10), and the friction plate (25) is movably connected inside the inner rod (20). A locking component is provided between the inner rod (20) and the long pin (18), and the long pin (18) is kept stable when the locking component is working.

2. The suspended limiting type drop-out high-voltage fuse according to claim 1, characterized in that: The rotating assembly includes a connecting shaft (9) fixedly connected inside the vertical plate (5), and the working block (10) is fixedly connected to the surface of the connecting shaft (9), and a push rod (12) is fixedly connected to the surface of the fixing block (4).

3. A suspended limiting type drop-out high-voltage fuse according to claim 2, characterized in that: The lower surface of the working block (10) is provided with a guide groove (11), and the surface of the guide groove (11) is inclined. The guide groove (11) corresponds to the push rod (12) one by one. In addition, the end of the push rod (12) is provided with a contact shaft.

4. A suspended limiting type drop-out high-voltage fuse according to claim 1, characterized in that: The telescopic assembly includes a limiting rod (19) fixedly connected to the inner wall of the working block (10), and a counterweight plate (13) is slidably provided on the surface of the limiting rod (19). In addition, a force-bearing plate (14) is slidably provided inside the material box (6).

5. A suspended limiting type drop-out high-voltage fuse according to claim 1, characterized in that: An auxiliary block (15) is fixedly connected to the upper surface of the connecting plate (3), and the card block (16) is slidably arranged inside the auxiliary block (15). A connecting pipe (7) is fixedly connected to the surface of the material box (6), and the end of the connecting pipe (7) is connected to the auxiliary block (15).

6. A suspended limiting type drop-out high-voltage fuse according to claim 1, characterized in that: The surface of the fixing block (4) is provided with a slot (8), and the slot (8) corresponds one-to-one with the card block (16).

7. A suspended limiting type drop-out high-voltage fuse according to claim 4, characterized in that: The front side of the working block (10) is fixedly connected to an outer plate (17), and the long pin (18) is rotatably arranged inside the outer plate (17). The locking assembly includes protrusions (22) fixedly connected to both sides of the inner rod (20), and a return spring (21) is fixedly connected to the surface of the protrusions (22). The other side of the return spring (21) is fixedly connected to the inner wall of the working block (10). Initially, the inner rod (20) is in contact with the surface of the counterweight plate (13), and the return spring (21) is initially in a compressed state.

8. A suspended limiting type drop-out high-voltage fuse according to claim 7, characterized in that: The inner rod (20) passes through the interior of the working block (10), and the interior of the working block (10) is provided with grooves (23) that correspond one-to-one with the protrusions (22).

9. A suspended limiting type drop-out high-voltage fuse according to claim 1, characterized in that: The inner rod (20) is fixedly connected to a column (24), and a torsion spring (26) is fixedly connected to the surface of the column (24). The other side of the torsion spring (26) is fixedly connected to the inner wall of the friction plate (25). In addition, the torsion spring (26) is always in a compressed state. Furthermore, a deep groove (27) is provided at the end of the long pin (18). Initially, the surface of the friction plate (25) is in contact with the inner wall of the deep groove (27).

10. A suspended limiting type drop-out high-voltage fuse according to claim 9, characterized in that: The friction plates (25) are symmetrically distributed on both sides of the inner rod (20), and the upper surface of the connecting plate (3) is fixedly connected with a positioning rod (29).

Images