A high-voltage fuse with easy installation

Abstract

The application provides a high-voltage fuse convenient to install, and relates to the technical field of high-voltage fuses, which comprises a fuse body, an insulator arranged in the fuse body, a fuse tube, a copper alloy rod and a clamping mechanism. The insulator comprises a clamping groove and a static contact conductive sheet. The fuse tube comprises an ear shaft and a movable contact sleeve. The ear shaft is hinged in the clamping groove. The fuse tube is rotated upwards around the ear shaft to make the movable contact sleeve contact the static contact conductive sheet to form a loop. The copper alloy rod is arranged on the back of the static contact conductive sheet. The clamping mechanism is arranged at the two ends of the copper alloy rod and comprises symmetrically and obliquely arranged clamping plates. When the movable contact sleeve and the static contact conductive sheet are loosely connected and heat, the heat is transmitted to the copper alloy rod and reaches a set value, and then the two sides of the clamping plates are synchronously and oppositely moved to center the fuse tube and push the movable contact sleeve to completely contact the static contact conductive sheet. After the clamping is returned to the original position, the clamping plates automatically stop moving to prevent excessive clamping. The application can automatically eliminate the heat generated by loose connection and improve the contact reliability. Different specifications of the fuse tube are self-adapted to the original position, and excessive clamping is avoided.

Description

Technical Field

[0001] This invention relates to the field of high-voltage fuse technology, and more particularly to a high-voltage fuse that is easy to install. Background Technology

[0002] High-voltage fuses are important protective electrical appliances in power distribution networks. Drop-out high-voltage fuses are widely used in the protection of the high-voltage side of 10kV distribution lines and distribution transformers due to their simple structure, intuitive operation, and isolation function. During installation, the trunnion at the lower end of the fuse tube is inserted into the slot at the lower end of the insulator, and then rotated upwards around the trunnion to make the moving contact sleeve at the upper end of the fuse tube contact the stationary contact conductive plate to form a circuit. During normal operation, sufficient contact pressure and contact area must be maintained to ensure reliable electrical contact.

[0003] In actual power distribution network operation, fuse tubes from different manufacturers, of different models, and with different rated currents at the same voltage level often have differences in contact size and tube diameter. The static contact clamping force of traditional drop-out fuses is a factory-set value and cannot be automatically adjusted according to the actual size of the fuse tube. When the trunnion is misaligned in the slot or not pushed into place, a loose connection is easily generated between the moving contact sleeve and the stationary contact conductive piece, increasing the contact resistance. When current passes through, Joule heating is generated, causing the contact temperature to rise too high, accelerating oxidation and spring annealing. In severe cases, it can burn the contact or cause accidental drop-out. This is the main root cause of poor contact, loose connection, and overheating in traditional drop-out fuses. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and to propose a high-voltage fuse that is easy to install.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A high-voltage fuse that is easy to install includes: a fuse body; an insulator disposed within the fuse body, including a slot and a stationary contact conductive sheet; a fuse tube including a trunnion and a moving contact sleeve, the trunnion being hinged in the slot, the fuse tube rotating upward around the trunnion to make the moving contact sleeve contact the stationary contact conductive sheet to form a circuit; a copper alloy rod fixed to the back of the stationary contact conductive sheet; and a clamping mechanism disposed at both ends of the copper alloy rod, including symmetrically inclined clamping plates; wherein, when the moving contact sleeve and the stationary contact conductive sheet are in a loose contact and generate heat, the heat is transferred to the copper alloy rod and, after reaching a set value, drives the clamping plates on both sides to move synchronously towards each other, aligning the fuse tube and pushing the moving contact sleeve to fully contact the stationary contact conductive sheet; after clamping and returning to the original position, the clamping plates automatically stop moving to prevent over-clamping.

[0006] Preferably, the clamping mechanism further includes a first sleeve, a first piston plate, a memory spring, a sleeve, and a connecting plate. Two first sleeves are symmetrically arranged at both ends of the copper alloy rod. The ends of the copper alloy rod are fixedly connected to the middle of the inner bottom surface of the corresponding first sleeve. The first piston plate is slidably connected to the inner surface of the first sleeve. The memory spring covers the outer surface of the copper alloy rod and is fastened between the side of the first piston plate and the inner bottom surface of the first sleeve. The sleeve is sleeved on the outside of the copper alloy rod and is fixed on the side of the first piston plate opposite to the memory spring. The connecting plate is fixed on the outer surface of the sleeve and is connected to the clamping plate.

[0007] Preferably, the end of the connecting plate is fixedly provided with an inclined rectangular box, the clamping plate is slidably connected to the inner surface of the rectangular box, and a plurality of evenly distributed first springs are fastened between the non-clamping surface of the clamping plate and the inner bottom surface of the rectangular box.

[0008] Preferably, a fixing tube is fixedly provided inside the side wall of the first sleeve, and the end of the fixing tube is fixedly connected to a second sleeve. The second sleeve is located inside the first sleeve. A second piston plate is slidably connected to the inner surface of the second sleeve. A connecting rod is fixedly provided in the middle of the side of the second piston plate. A metal ball is fixedly provided at the end of the connecting rod. A tapered hole is opened in the side wall of the end of the first sleeve. The metal ball is located in the tapered hole. A second spring is sleeved on the outside of the connecting rod. The second spring is fastened between the side of the second piston plate and the inner end face of the second sleeve. The movement of the clamping plate can drive the metal ball to move.

[0009] Preferably, the space formed by the inner wall of the rectangular box and the clamping plate is the first storage chamber, the space formed by the inner wall of the second sleeve and the second piston plate is the second storage chamber, an oil delivery hose is fastened between the fixed pipe and the first storage chamber, and hydraulic oil is stored between the first storage chamber and the second storage chamber.

[0010] Preferably, when the clamping plate is in a non-clamped state, the metal ball does not close the flow section of the conical hole.

[0011] Preferably, the metal ball reciprocates along the center line of the conical hole, and the center line of the metal ball coincides with the center line of the conical hole.

[0012] Preferably, the clamping plate is made of insulating material, the hydraulic oil is silicone oil, and the outer ring rubber used for the first piston plate and the second piston plate is fluororubber.

[0013] Preferably, the insulator further includes an upper elastic pressing mechanism, which includes a duckbill plate and a pressing spring. The pressing spring is connected to the duckbill plate and drives the duckbill plate to press and limit the upper end of the fuse tube.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. When a loose connection causes overheating, the copper alloy rod senses it and drives the clamping plate to move synchronously in opposite directions, aligning and pressing the fuse tube, so that the moving contact sleeve and the stationary contact conductive sheet are in complete contact, eliminating abnormal overheating and improving contact reliability. 2. The clamping plate automatically stops after clamping the fuse tube and returning it to its position. It can center and return fuse tubes of different specifications without over-clamping, thus avoiding damage to the fuse tube. 3. After the temperature drops, the clamping plate resets and disengages from the fuse tube. In the event of a short circuit, the fuse tube falls freely without the clamping plate obstructing it, thus ensuring the drop protection function. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a high-voltage fuse that is easy to install according to an embodiment of the present invention; Figure 2 This is a schematic diagram showing the installation position of the stationary contact conductive sheet in a high-voltage fuse that is easy to install according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the external structure of the copper alloy rod in a high-voltage fuse that is easy to install according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the internal structure of the first sleeve in a high-voltage fuse designed for easy installation according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the clamping plate position in the extended state of the memory spring in a high-voltage fuse according to an embodiment of the present invention for easy installation; Figure 6 This is a schematic diagram of the tapered hole in a high-voltage fuse designed for easy installation according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the closed state of the tapered orifice in a high-voltage fuse designed for easy installation according to an embodiment of the present invention; Figure 8 for Figure 4 Enlarged view of the structure at point A in the image.

[0016] In the diagram: 100, insulator; 101, slot; 102, stationary contact conductive sheet; 200, fuse tube; 201, trunnion; 202, moving contact sleeve; 300, copper alloy rod; 301, first sleeve; 302, first piston plate; 303, memory spring; 304, sleeve; 305, connecting plate; 400, rectangular box; 401, clamping plate; 402, first spring; 500, tapered hole; 501, second sleeve; 502, second piston plate; 503, connecting rod; 504, metal ball; 505, second spring; 600, first storage chamber; 601, oil hose; 602, fixed pipe; 603, second storage chamber. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] The terms used in this invention, such as "upper," "lower," "left," "right," "middle," and "one," are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0019] like Figures 1-8 As shown, this embodiment of the invention provides a high-voltage fuse that is easy to install, comprising: a fuse body; an insulator 100 disposed within the fuse body, including a slot 101 and a stationary contact conductive sheet 102; a fuse tube 200, including a trunnion 201 and a moving contact sleeve 202, the trunnion 201 being hinged within the slot 101, and the fuse tube 200 rotating upward around the trunnion 201 to cause the moving contact sleeve 202 to contact the stationary contact conductive sheet 102 to form a circuit; and a copper alloy rod 300 fixedly disposed within the stationary contact conductive sheet 102. On the back of the electrode 102; a clamping mechanism is provided at both ends of the copper alloy rod 300, including symmetrically inclined clamping plates 401; when the moving contact sleeve 202 and the stationary contact conductive sheet 102 are in a loose connection and generate heat, the heat is transferred to the copper alloy rod 300 and after reaching a set value, it drives the clamping plates 401 on both sides to move synchronously towards each other, aligning the fuse tube 200 and pushing the moving contact sleeve 202 to fully contact the stationary contact conductive sheet 102; after clamping and returning to the position, the clamping plates 401 automatically stop moving to prevent over-clamping.

[0020] In this embodiment, during installation, the operator first hooks the trunnion 201 at the lower end of the fuse tube 200 into the slot 101 at the lower end of the insulator 100. The trunnion 201 can rotate around its own axis within the slot 101. Then, the operator pushes the fuse tube 200 upward, causing it to rotate around the trunnion 201. The moving contact sleeve 202 at the upper end of the fuse tube 200 approaches and contacts the stationary contact conductive plate 102 at the upper end of the insulator 100. At this time, current flows from... The static contact conductive sheet 102 flows into the fuse tube 200 through the moving contact sleeve 202, forming a circuit and completing the installation of the fuse tube 200. If the trunnion 201 is axially offset in the slot 101 due to the fit gap or external force, causing the fuse tube 200 to be tilted as a whole, or if the operator does not push the fuse tube 200 upward into place during installation, only partial contact or slight contact will be formed between the moving contact sleeve 202 and the static contact conductive sheet 102, resulting in a poor connection. In the state of a loose connection, the contact area is much smaller than the normal value, and the contact resistance increases significantly. When the line current passes through the loose connection point, heat is generated on the contact resistance, and the temperature of the loose connection point rises rapidly. The heat first accumulates at the contact interface between the moving contact sleeve 202 and the stationary contact conductive sheet 102, and then is conducted from the stationary contact conductive sheet 102 to the copper alloy rod 300 behind it. The copper alloy rod 300 is fixed to the back of the stationary contact conductive sheet 102 and is in close contact with the stationary contact conductive sheet 102. The heat is continuously conducted from the stationary contact conductive sheet 102 to the copper alloy rod 300. After absorbing the heat, the temperature of the copper alloy rod 300 gradually increases. When the temperature of the copper alloy rod 300 reaches the preset set value, it drives the clamping plates 401 on both sides to move synchronously towards each other. Since the clamping plates 401 on both sides are symmetrically inclined, when they move towards each other, the inclined surfaces simultaneously contact the outer wall of the fuse tube 200, generating a centering force, pushing the fuse tube 200 towards the center position, and correcting the deflection caused by the offset of the trunnion 201. At the same time, the component force of the inclined surface pushes the fuse tube 200 toward the stationary contact conductive sheet 102, which increases the contact pressure and expands the contact area between the moving contact sleeve 202 and the stationary contact conductive sheet 102 until they are in complete contact. When the moving contact sleeve 202 and the stationary contact conductive sheet 102 are in complete contact, the loose connection is eliminated and the contact resistance returns to normal.After the clamping plate 401 clamps and positions the fuse tubes 200 of different specifications, that is, when the fuse tubes 200 are aligned and the moving contact sleeve 202 is fully in contact with the stationary contact conductive sheet 102, the clamping plate 401 automatically stops moving and no longer applies clamping force to avoid excessive clamping that could damage the outer wall of the fuse tube 200 or deform the moving contact sleeve 202. After the loose connection is eliminated, abnormal heat is no longer generated at the contact point, and the temperature of the stationary contact conductive sheet 102 and the copper alloy rod 300 begins to decrease. When the temperature drops below the set value, the clamping plates 401 on both sides move in the opposite direction to reset. When a short circuit fault occurs in the circuit, the fuse inside the fuse tube 200 melts, and the moving contact sleeve 202 at the upper end of the fuse tube 200 loses the tension constraint of the fuse. Under its own gravity, the fuse tube 200 rotates downward around the trunnion 201 and falls. Since the clamping plates 401 reset after the temperature returns to normal and do not contact the fuse tube 200, they will not hinder the falling action of the fuse tube 200.

[0021] like Figures 1-5 As shown, optionally, the clamping mechanism further includes a first sleeve 301, a first piston plate 302, a memory spring 303, a sleeve 304, and a connecting plate 305. Two first sleeves 301 are symmetrically arranged at both ends of the copper alloy rod 300. The end of the copper alloy rod 300 is fixedly connected to the middle of the inner bottom surface of the corresponding first sleeve 301. The first piston plate 302 is slidably connected to the inner surface of the first sleeve 301. The memory spring 303 covers the outer surface of the copper alloy rod 300 and is fastened between the side of the first piston plate 302 and the inner bottom surface of the first sleeve 301. The sleeve 304 is sleeved on the outside of the copper alloy rod 300 and is fixed on the side of the first piston plate 302 away from the memory spring 303. The connecting plate 305 is fixed on the outer surface of the sleeve 304 and is connected to the clamping plate 401.

[0022] In this optional embodiment, the heat generated by the loose connection is conducted to the copper alloy rod 300 through the stationary contact conductive sheet 102. After the temperature of the copper alloy rod 300 rises, it transfers the heat to the memory spring 303. After the memory spring 303 reaches the set temperature, it undergoes a phase change and elongates, pushing the first piston plate 302 to slide within the first sleeve 301. The first piston plate 302 drives the sleeve 304 to move axially along the copper alloy rod 300. The sleeve 304 drives the clamping plate 401 to move synchronously in opposite directions through the connecting plate 305, thereby achieving the centering and clamping of the fuse tube 200. Since the clamping plate 401 is inclined, when the clamping plate 401 moves synchronously in opposite directions, it also drives the moving contact sleeve 202 to fully fit with the stationary contact conductive sheet 102.

[0023] like Figure 4As shown, optionally, a rectangular box 400 with an inclined arrangement is fixed at the end of the connecting plate 305, and a clamping plate 401 is slidably connected to the inner surface of the rectangular box 400. A plurality of evenly distributed first springs 402 are fastened between the non-clamping surface of the clamping plate 401 and the inner bottom surface of the rectangular box 400.

[0024] In this optional embodiment, when the clamping plate 401 contacts the outer wall of the fuse tube 200, the reaction force causes the clamping plate 401 to slide backward within the rectangular box 400 and compress the first spring 402, forming a flexible buffer, so that the clamping force of the clamping plate 401 on the fuse tube 200 is gentle rather than a rigid impact.

[0025] like Figure 4 and Figure 8 As shown, optionally, a fixing tube 602 is fixedly provided inside the side wall of the first sleeve 301, and the end of the fixing tube 602 is fixedly connected to the second sleeve 501. The second sleeve 501 is located inside the first sleeve 301. A second piston plate 502 is slidably connected to the inner surface of the second sleeve 501. A connecting rod 503 is fixedly provided in the middle of the side of the second piston plate 502. A metal ball 504 is fixedly provided at the end of the connecting rod 503. A tapered hole 500 is opened in the side wall of the end of the first sleeve 301. The metal ball 504 is located in the tapered hole 500. A second spring 505 is sleeved on the outside of the connecting rod 503. The second spring 505 is fastened between the side of the second piston plate 502 and the inner end face of the second sleeve 501. The movement of the clamping plate 401 can drive the metal ball 504 to move.

[0026] In this optional embodiment, after the clamping plate 401 clamps and returns to its original position on the fuse tube 200, if the clamping plate 401 continues to move towards the other side, the reaction force causes the clamping plate 401 to slide backward within the rectangular box 400 and compress the hydraulic oil. The hydraulic oil enters the second sleeve 501 through the fixed pipe 602, pushing the second piston plate 502 to move. The second piston plate 502 pushes the metal ball 504 to move along the conical hole 500 through the connecting rod 503. The second spring 505 is compressed. At this time, the conical hole 500 is blocked by the metal ball 504, so that the clamping plate 401 automatically stops moving after clamping and returning to its original position, avoiding excessive clamping and damage to the fuse tube 200.

[0027] like Figures 3-8 As shown, optionally, the space formed by the inner wall of the rectangular box 400 and the clamping plate 401 is the first storage chamber 600, and the space formed by the inner wall of the second sleeve 501 and the second piston plate 502 is the second storage chamber 603. An oil delivery hose 601 is fastened between the fixed pipe 602 and the first storage chamber 600, and hydraulic oil is stored between the first storage chamber 600 and the second storage chamber 603.

[0028] Specifically, hydraulic oil is stored between the first storage chamber 600 and the second storage chamber 603, and the hydraulic oil can flow back and forth between the first storage chamber 600 and the second storage chamber 603 via the oil delivery hose 601 and the fixed pipe 602.

[0029] In this optional embodiment, when the clamping plate 401 slides within the rectangular box 400 under pressure, the volume of the first storage chamber 600 decreases, and hydraulic oil is squeezed out and flows into the second storage chamber 603 through the oil delivery hose 601 and the fixed pipe 602, pushing the second piston plate 502 to move. The second piston plate 502 pushes the metal ball 504 to move along the conical hole 500 through the connecting rod 503. At this time, the conical hole 500 is blocked by the metal ball 504. Since the first piston plate 302 drives the clamping plate 401 to move synchronously for clamping operation, the movement of the first piston plate 302 is recorded. As the space of the chamber containing the spring 303 increases, external air automatically enters the chamber through the conical hole 500 to facilitate the smooth movement of the first piston plate 302. Therefore, when the conical hole 500 is blocked by the metal ball 504, external air cannot enter the chamber, preventing the first piston plate 302 from driving the clamping plate 401 to continue moving. This means that when clamping and returning different specifications of fuse tubes 200 to their positions, the clamping plate 401 automatically stops moving after clamping, avoiding over-clamping and damage to the fuse tubes 200. When the temperature drops and the clamping plate 401 resets, the second spring 505 pushes the second piston plate 502 back, and the hydraulic oil flows back to the first storage chamber 600, restoring the system to its initial state, ready to respond to the next intermittent heating event.

[0030] like Figure 4 and Figure 8 As shown, optionally, when the clamping plate 401 is in a non-clamping state, the metal ball 504 does not close the flow section of the conical hole 500.

[0031] Specifically, when the clamping plate 401 is in a non-clamping state, the metal ball 504 does not close the flow section of the conical hole 500, and the conical hole 500 remains unobstructed.

[0032] In this optional embodiment, the conical hole 500 is in an open state when not clamped, so that air can circulate freely. At this time, the system is in a standby state, and the first piston plate 302 can be driven to move after the copper alloy rod 300 absorbs enough heat.

[0033] like Figures 6-8 As shown, optionally, the metal ball 504 reciprocates along the center line of the conical hole 500, and the center line of the metal ball 504 coincides with the center line of the conical hole 500.

[0034] In this optional embodiment, the metal ball 504 is coaxially arranged with the tapered hole 500, so that a uniform annular flow gap is formed between the metal ball 504 and the inner wall of the tapered hole 500 during movement. When the clamping plate 401 clamps and returns to its position and pushes the metal ball 504 to move towards the small diameter end of the tapered hole 500, the annular gap decreases uniformly until it disappears.

[0035] like Figure 4 and Figure 6 As shown, optionally, the clamping plate 401 is made of insulating material, the hydraulic oil is silicone oil, and the outer ring rubber used for the first piston plate 302 and the second piston plate 502 is fluororubber.

[0036] In this optional embodiment, the clamping plate 401 is made of insulating material to avoid introducing additional conductive or creepage paths when clamping the fuse tube 200, thus ensuring high-voltage insulation safety. Silicone oil, as the hydraulic medium, has good temperature resistance and high insulation strength, maintaining stable flow and damping characteristics within the temperature range generated by heat generation from loose connections. The outer ring rubber of the first piston plate 302 and the second piston plate 502 is made of fluororubber, which has a temperature resistance of over 200°C and is not prone to aging or deformation under long-term high-temperature conditions, ensuring reliable piston sealing and long-term maintenance-free operation of the hydraulic system.

[0037] like Figure 1 As shown, optionally, the insulator 100 also includes an upper elastic clamping mechanism, which includes a duckbill plate and a clamping spring. The clamping spring is connected to the duckbill plate, and the clamping spring drives the duckbill plate to clamp and limit the upper end of the fuse tube 200.

[0038] In this optional embodiment, the upper elastic clamping mechanism is a conventional structure. Driven by a clamping spring, the duckbill provides basic clamping force to the upper end of the fuse tube 200, ensuring basic contact between the moving contact sleeve 202 and the stationary contact conductive sheet 102 under normal installation conditions. When the fuse tube 200 is properly installed without any loose connections, the duckbill provides continuous basic contact pressure, ensuring stable electrical contact during normal operation. When the fuse tube 200 melts and falls, the duckbill releases after the fuse tension disappears, without hindering the falling action of the fuse tube 200. The upper elastic clamping mechanism is existing technology, and its specific structure and working principle will not be described in detail here.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-voltage fuse that is easy to install, characterized in that, include: Fuse body; An insulator (100) is disposed in the fuse body and includes a slot (101) and a stationary contact conductive sheet (102); The fuse tube (200) includes a trunnion (201) and a moving contact sleeve (202). The trunnion (201) is hinged in the slot (101). The fuse tube (200) rotates upward around the trunnion (201) to make the moving contact sleeve (202) contact the stationary contact conductive sheet (102) to form a circuit. A copper alloy rod (300) is fixed to the back of the static contact conductive sheet (102); The clamping mechanism is located at both ends of the copper alloy rod (300) and includes clamping plates (401) that are symmetrically inclined. When the moving contact sleeve (202) and the stationary contact conductive sheet (102) are in a loose connection and generate heat, the heat is transferred to the copper alloy rod (300) and after reaching the set value, it drives the clamping plates (401) on both sides to move synchronously towards each other, aligning the fuse tube (200) and pushing the moving contact sleeve (202) and the stationary contact conductive sheet (102) into complete contact; after clamping and returning to position, the clamping plate (401) automatically stops moving to prevent over-clamping.

2. The easy-to-install high-voltage fuse according to claim 1, characterized in that, The clamping mechanism further includes a first sleeve (301), a first piston plate (302), a memory spring (303), a sleeve (304), and a connecting plate (305). Two first sleeves (301) are symmetrically arranged at both ends of the copper alloy rod (300). The end of the copper alloy rod (300) is fixedly connected to the middle of the inner bottom surface of the corresponding first sleeve (301). The first piston plate (302) is slidably connected to the inner surface of the first sleeve (301). The memory spring (303) Covering the outer surface of the copper alloy rod (300), the memory spring (303) is fastened between the side of the first piston plate (302) and the inner bottom surface of the first sleeve (301). The sleeve (304) is sleeved on the outside of the copper alloy rod (300) and fixed on the side of the first piston plate (302) away from the memory spring (303). The connecting plate (305) is fixed on the outer surface of the sleeve (304) and connected to the clamping plate (401).

3. The easy-to-install high-voltage fuse according to claim 2, characterized in that, The end of the connecting plate (305) is fixed with an inclined rectangular box (400), and the clamping plate (401) is slidably connected to the inner surface of the rectangular box (400). A plurality of evenly distributed first springs (402) are fastened between the non-clamping surface of the clamping plate (401) and the inner bottom surface of the rectangular box (400).

4. The easy-to-install high-voltage fuse according to claim 3, characterized in that, A fixing tube (602) is fixedly installed inside the side wall of the first sleeve (301). The end of the fixing tube (602) is fixedly connected to a second sleeve (501). The second sleeve (501) is located inside the first sleeve (301). A second piston plate (502) is slidably connected to the inner surface of the second sleeve (501). A connecting rod (503) is fixedly installed in the middle of the side of the second piston plate (502). The end of the connecting rod (503) is fixedly fitted with a metal... The metal ball (504) is located inside the tapered hole (500) in the end side wall of the first sleeve (301). The metal ball (504) is located inside the tapered hole (500). A second spring (505) is sleeved on the outside of the connecting rod (503). The second spring (505) is fastened between the side of the second piston plate (502) and the inner end face of the second sleeve (501). The movement of the clamping plate (401) can drive the metal ball (504) to move.

5. The easy-to-install high-voltage fuse according to claim 4, characterized in that, The space formed by the inner wall of the rectangular box (400) and the clamping plate (401) is the first storage chamber (600), and the space formed by the inner wall of the second sleeve (501) and the second piston plate (502) is the second storage chamber (603). An oil delivery hose (601) is fastened between the fixed pipe (602) and the first storage chamber (600), and hydraulic oil is stored between the first storage chamber (600) and the second storage chamber (603).

6. The easy-to-install high-voltage fuse according to claim 5, characterized in that, When the clamping plate (401) is in a non-clamping state, the metal ball (504) does not close the flow section of the tapered hole (500).

7. The easy-to-install high-voltage fuse according to claim 5, characterized in that, The metal ball (504) moves back and forth along the center line of the conical hole (500), and the center line of the metal ball (504) coincides with the center line of the conical hole (500).

8. The easy-to-install high-voltage fuse according to claim 5, characterized in that, The clamping plate (401) is made of insulating material, the hydraulic oil is silicone oil, and the outer ring rubber used in the first piston plate (302) and the second piston plate (502) is fluororubber.

9. The easy-to-install high-voltage fuse according to claim 1, characterized in that, The insulator (100) also includes an upper elastic pressing mechanism, which includes a duckbill plate and a pressing spring. The pressing spring is connected to the duckbill plate and drives the duckbill plate to press and limit the upper end of the fuse tube (200).

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