A quick-break electric drop-out fuse with intelligent monitoring

Abstract

The utility model provides a kind of quick-break type electric drop-out fuse with intelligent monitoring, including insulating support main body, the drive device of erecting in the insulating support main body one side, the rotation load fuse assembly of rotation cooperation in the lower contact structure of the insulating support main body lower end, the insulating support main body includes voltage transformer component and is arranged in the electronic current transformer of voltage transformer component upper end, the drive device includes drive casing, the screw rod motor component of being set in the drive casing, the energy storage spring of being sleeved on the output end of screw rod motor component, the double rocker structure of being screwed on the output end of screw rod motor component, another end of the double rocker structure is hinged on the rotation load fuse assembly, the rotation load fuse assembly includes fuse tube component, the upper end of fuse tube component is equipped with fuse tube end cover, temperature measuring element is integrated in the fuse tube end cover. The utility model relates to fuse technical field.

Description

Technical Field

[0001] This utility model relates to the field of fuse technology, and in particular to a fast-breaking electric drop-out fuse with intelligent monitoring. Background Technology

[0002] Drop-out fuses, as crucial protective electrical devices in power distribution lines, have the core function of rapidly disconnecting the circuit when an overload or short-circuit fault occurs in the system, preventing the fault from escalating and protecting electrical equipment. With the development of smart distribution networks, traditional drop-out fuses are gradually evolving towards electrically operated and condition-monitored systems. Existing technologies, such as the electrically operated intelligent monitoring drop-out fuse disclosed in patent CN119400668B, employ a push-pull drive mechanism combined with an impact-type drive assembly and a storage spring, aiming to improve the tripping speed. Another patent, CN219370961U, provides a fuse tube with current detection function and an electrically operated drop-out fuse. It improves drive stability by integrating a current detection module into the fuse tube body and employing a coaxial rotation design, representing an attempt by existing technologies in intelligent fuse monitoring.

[0003] However, the aforementioned existing technical solutions still have significant limitations: First, the response speed of the tripping mechanism based on impact or conventional motor drive is limited by the inertia and hindrance of the mechanical transmission chain, making it difficult to achieve millisecond-level ultra-fast disconnection to effectively suppress fault current; second, the insulation distance design margin between the moving and stationary contacts after tripping is insufficient, and the arc-extinguishing capability is limited, posing a risk of insulation breakdown and arcing; third, the monitoring function of the existing solutions is relatively simple, or only focuses on current parameters, lacking real-time perception and fusion judgment of multi-dimensional state quantities such as voltage and conductor temperature, making it impossible to achieve early warning of small current faults; finally, in harsh environments such as heavy rain and nighttime, it is still difficult to achieve safe and reliable remote emergency tripping and fault location, which restricts the improvement of operation and maintenance efficiency.

[0004] Therefore, the inventors urgently need a fast-acting electric drop-out fuse with intelligent monitoring to solve the above problems. Utility Model Content

[0005] To address the shortcomings of the existing technology, this utility model provides a fast-acting electric drop-out fuse with intelligent monitoring, aiming to solve the problems of slow tripping speed, insufficient electrical insulation distance after tripping, lack of multi-parameter intelligent monitoring function, and inability to reliably operate remotely in harsh environments in the existing electric drop-out fuse.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a fast-acting electrically operated drop-out fuse with intelligent monitoring, comprising an insulating support body, a drive device mounted on one side of the insulating support body, and a rotating fuse carrier assembly with a lower contact structure rotatably fitted to the lower end of the insulating support body. The insulating support body includes a voltage transformer assembly and an electronic current transformer disposed on the upper end of the voltage transformer assembly. The drive device includes a drive housing and a lead screw motor assembly disposed within the drive housing. The device includes a storage spring sleeved on the output end of the lead screw motor assembly, and a double rocker structure threaded onto the output end of the lead screw motor assembly. The other end of the double rocker structure is hinged to the rotating fusible component assembly. The rotating fusible component assembly includes a fusible tube assembly. The upper end of the fusible tube assembly is provided with a fusible tube end cap. A temperature sensing element is integrated inside the fusible tube end cap. When the circuit is closed, the fusible tube end cap engages with the upper contact structure at the upper end of the insulating support body. The upper contact structure includes an arc-extinguishing shroud A and an arc-extinguishing shroud B located on both sides.

[0007] Based on the above, the beneficial effects of a fast-breaking electrically operated drop-out fuse with intelligent monitoring are that it solves the problems of slow tripping speed, insufficient electrical insulation distance after tripping, lack of multi-parameter intelligent monitoring function, and inability to reliably operate remotely in harsh environments in existing electrically operated drop-out fuses; mainly reflected in: 1. This utility model utilizes the synergistic effect of the lead screw motor assembly, energy storage spring, and double rocker structure in the drive device. The lead screw motor assembly drives the double rocker structure to move past the mechanical dead point of the ball screw, allowing the energy stored in the energy storage spring to be released instantaneously. This energy is transmitted to the rotating fuse assembly through the double rocker structure and drives it to rotate at high speed, achieving a millisecond-level ultra-fast tripping response and effectively suppressing the damage caused by fault current. 2. Through the specific mechanical design of the double rocker structure, the double rocker structure reaches its limit position when the opening action ends, thereby driving the rotating fusible component assembly and the fusible tube assembly on it to fall to a stable state with a maximum opening distance. This ensures that the electrical insulation distance between the fusible tube end cap and the incoming terminal of the upper contact structure far exceeds the standard requirements. At the same time, combined with the arc extinguishing cover A and arc extinguishing cover B of the upper contact structure, which tightly cover the arc generation part at the initial stage of opening, the insulation strength is strengthened after opening and the risk of arcing is effectively suppressed. 3. This utility model uses electronic current transformers and voltage transformers integrated into the main body of the insulation support to collect current and voltage signals in the high-voltage circuit in real time. At the same time, it uses temperature measuring elements integrated into the fuse end cap to monitor the operating temperature in the upper contact structure in real time. This enables comprehensive real-time perception and intelligent monitoring of multi-dimensional status parameters such as current, voltage, and temperature, providing a complete data foundation for early fault warning and status judgment. 4. This utility model achieves automatic opening and closing operations after receiving remote commands through the electric drive mode of the drive device, replacing the traditional manual operation with an insulating rod. At the same time, the insulating support body adopts an integrated casting molding structure and is covered with weather-resistant materials, which enables the entire device to resist the effects of severe environments such as rainstorms and condensation. Thus, it realizes safe and reliable remote emergency opening and automated operation and maintenance under various severe weather conditions.

[0008] Furthermore, the insulating support body also includes an incoming terminal disposed on the upper end of the electronic current transformer and a support insulator disposed on the lower end of the voltage transformer assembly. The voltage transformer assembly includes two electronic voltage transformers and an integrated module connected between the two electronic voltage transformers. The lower contact structure includes a lower hook disposed on one side of the support insulator and a lower outgoing terminal disposed on the lower end of the lower hook.

[0009] Based on the above, the beneficial effects of the incoming terminal are: providing an electrical connection point for high-voltage lines, realizing the safe input and conduction of electrical energy; the beneficial effects of the post insulator are: undertaking the mechanical support and ground insulation of the entire insulation support body, realizing the structural stability and high-voltage isolation of the equipment; the beneficial effects of the electronic voltage transformer are: acquiring line voltage signals in real time based on the capacitive voltage division principle, realizing accurate monitoring of operating voltage; the beneficial effects of the integrated module are: processing monitoring signals from electronic current transformers and electronic voltage transformers and executing control logic, realizing data fusion processing, fault diagnosis, and remote communication; the beneficial effects of the lower hook are: providing an installation and rotation fulcrum for the push rod fixing bracket; and the beneficial effects of the lower outgoing terminal are: providing an electrical connection interface for the load-side line, forming a current path together with the incoming terminal of the upper contact structure.

[0010] Furthermore, the electronic current transformer, electronic voltage transformer, integrated module, incoming terminal and post insulator are integrally cast and molded, and are externally wrapped with weather-resistant silicone rubber.

[0011] Furthermore, the lead screw motor assembly includes a connecting rod drive motor and a ball screw disposed at the output end of the connecting rod drive motor.

[0012] Based on the above, the beneficial effects of the linkage drive motor are that it receives opening and closing commands and outputs rotational power, thereby realizing precise driving and control of the ball screw; the beneficial effects of the ball screw are that it converts the rotational motion of the motor into the linear motion of the synchronous shaft, thereby realizing high-efficiency and high-precision mechanical transmission and smooth compression of the energy storage spring.

[0013] Furthermore, the dual rocker structure includes a synchronous shaft threaded onto the output end of the lead screw motor assembly, a long connecting rod fixed to the synchronous shaft, and a short connecting rod hinged to the other end of the long connecting rod, the other end of which is hinged to the rotating ferrule assembly.

[0014] Based on the above, the beneficial effect of the synchronous shaft is that it converts the rotational motion of the ball screw into its own linear motion and directly compresses the energy storage spring, thus realizing the transmission of power and the storage of energy; the beneficial effect of the long connecting rod is that it converts the linear motion of the synchronous shaft into a large-amplitude oscillation, thus realizing the amplification and transmission of motion; the beneficial effect of the short connecting rod is that it ultimately converts the oscillation of the long connecting rod into a force that drives the rotating carrier assembly to rotate, thus realizing the conversion of motion form and the final power output.

[0015] Furthermore, the synchronous shaft is provided with extension rods on both sides, and the two extension rods extend out of the sliding grooves on both sides of the drive housing and are connected to the inner wall of the long connecting rod.

[0016] Based on the above, the beneficial effect of the extended rod is that it extends out of the sliding grooves on both sides of the drive housing and connects with the inner wall of the long connecting rod, strictly limiting the linear motion of the synchronous shaft to the trajectory determined by the sliding groove, thus realizing precise guidance and stable transmission of motion; the beneficial effect of the sliding groove is that it ensures that the entire double rocker structure moves smoothly along the predetermined path, thus realizing reliable operation and precise positioning of the mechanism.

[0017] Furthermore, the rotating melt carrier assembly includes a push rod fixing bracket mounted on the lower contact structure, a push rod rotating bracket hinged to the other end of the push rod fixing bracket, an epoxy resin rod mounted on the other end of the push rod rotating bracket, a hook fork disposed on the top of the epoxy resin rod, and a melt tube assembly mounted in the middle of the push rod rotating bracket.

[0018] Based on the above, the beneficial effects of the push rod fixing bracket are: providing a stable rotation fulcrum for the entire rotating molten component assembly, realizing a reliable connection between the rotating molten component assembly and the insulating support body; the beneficial effects of the push rod rotating bracket are: as a core transmission component, it transmits the driving force of the short connecting rod to the epoxy resin rod and the molten tube assembly, realizing power transfer and motion conversion; the beneficial effects of the epoxy resin rod are: utilizing the excellent insulation properties of epoxy resin material, it forms electrical isolation between the hook fork and the metal push rod rotating bracket, realizing reliable insulation under high voltage conditions; the beneficial effects of the hook fork are: it directly hooks onto the ring on the molten tube end cap, directly applying the rotational force of the push rod rotating bracket to the molten tube assembly, realizing reliable lifting and releasing of the molten tube assembly.

[0019] Furthermore, the fusion tube assembly also includes a fusion tube, a fusion wire disposed inside the fusion tube, and a fusion tube lower fixing member disposed at the lower end of the fusion tube. The fusion tube end cap is disposed at the upper end of the fusion tube, and a ring is disposed on one side of the fusion tube end cap. The hook fork is hooked onto the ring.

[0020] Based on the above, the beneficial effects of the fuse tube are to accommodate and fix the fuse wire; the beneficial effect of the fuse wire is to realize the one-time current cut-off protection of the circuit; the beneficial effect of the fuse tube lower fixing component is to stably install the fuse tube assembly on the rotating fuse carrier assembly, so as to realize the reliable bearing and positioning of the fuse tube assembly.

[0021] Furthermore, the upper contact structure also includes an upper contact mounting bracket connected to the upper part between the arc extinguishing shroud A and the arc extinguishing shroud B, a buffer block located between the arc extinguishing shroud A and the arc extinguishing shroud B, an inlet terminal disposed between the upper contact mounting bracket and the buffer block, and an upper contact spring connected between the upper contact mounting bracket and the inlet terminal.

[0022] Based on the above, the beneficial effects of the buffer block are that it contacts the fuse tube end cap during the closing process and absorbs its impact kinetic energy, thereby achieving buffering of the closing action and reducing the impact stress on the equipment; the beneficial effect of the incoming terminal is that it forms an electrical connection with the fuse tube end cap in the closed state, thereby achieving the conduction and transmission of the main circuit current; the beneficial effect of the upper contact spring is that it applies continuous pressure to the incoming terminal to press the fuse tube end cap, thereby achieving reliable maintenance of the closed state and reducing contact resistance.

[0023] Furthermore, the temperature sensing element is a magnetically coupled RFID tag.

[0024] To more clearly illustrate the above-mentioned features of this utility model and the objectives it aims to achieve, the following description, in conjunction with the accompanying drawings and specific embodiments, will further explain this utility model. Attached Figure Description

[0025] Figure 1 : This is a schematic diagram of the present invention; Figure 2 This is a partial schematic diagram of the insulating support body of this utility model; Figure 3 : This is a schematic diagram of the driving device of this utility model; Figure 4 : This is a schematic diagram of the lower contact structure of this utility model; Figure 5 This is a partial schematic diagram of the rotating melting carrier assembly of this utility model; Figure 6 : This is a schematic diagram of the fusion tube assembly of this utility model; Figure 7 : This is a cross-sectional view of the fusion tube end cap of this utility model; Figure 8 This is an exploded view of the upper contact structure of this utility model.

[0026] Reference numerals: 1-Insulation support body, 11-Voltage transformer assembly, 111-Electronic voltage transformer, 112-Integrated module, 12-Electronic current transformer, 13-First incoming terminal, 14-Upper contact structure, 141-Arc extinguishing chamber A, 142-Arc extinguishing chamber B, 143-Upper contact mounting bracket, 144-Buffer block, 145-Second incoming terminal, 146-Upper contact spring, 15-Lower contact structure, 151-Lower hook, 152-Lower outgoing terminal, 16-Post insulator, 2-Drive device, 21-Drive housing 22-Screw motor assembly, 221-Connecting rod drive motor, 222-Ball screw, 23-Energy storage spring, 24-Double rocker structure, 241-Synchronous shaft, 2411-Extended rod, 242-Long connecting rod, 243-Short connecting rod, 3-Rotating ferrule assembly, 31-Fuel tube assembly, 311-Fuel tube end cap, 3111-Temperature sensing element, 3112-Ring, 312-Fuel tube, 313-Fuse wire, 314-Fuel tube lower fixing component, 32-Push rod fixing bracket, 33-Push rod rotating bracket, 34-Epoxy resin rod, 35-Hook fork. Detailed Implementation

[0027] like Figures 1-8 As shown, a fast-acting electrically operated drop-out fuse with intelligent monitoring includes an insulating support body 1, a drive device 2 mounted on one side of the insulating support body 1, and a rotating fuse carrier assembly 3 rotatably fitted to a lower contact structure 15 at the lower end of the insulating support body 1. The insulating support body 1 includes a voltage transformer assembly 11 and an electronic current transformer 12 disposed on the upper end of the voltage transformer assembly 11. The drive device 2 includes a drive housing 21, a lead screw motor assembly 22 disposed within the drive housing 21, and a sleeved assembly connected to the lead screw motor assembly. The energy storage spring 23 on the output end of the 22 and the double rocker structure 24 threadedly connected to the output end of the lead screw motor assembly 22 are provided. The other end of the double rocker structure 24 is hinged to the rotating fusible component assembly 3. The rotating fusible component assembly 3 includes a fusible tube assembly 31. The upper end of the fusible tube assembly 31 is provided with a fusible tube end cap 311. The fusible tube end cap 311 integrates a temperature measuring element 3111. When the circuit is closed, the fusible tube end cap 311 is engaged in the upper contact structure 14 at the upper end of the insulating support body 1. The upper contact structure 14 includes an arc extinguishing cover A 141 and an arc extinguishing cover B 142 located on both sides.

[0028] The insulating support body 1 also includes a first incoming terminal 13 disposed on the upper end of the electronic current transformer 12 and a post insulator 16 disposed on the lower end of the voltage transformer assembly 11. The voltage transformer assembly 11 includes two electronic voltage transformers 111 and an integrated module 112 connected between the two electronic voltage transformers 111. The lower contact structure 15 includes a lower hook 151 disposed on one side of the post insulator 16 and a lower outgoing terminal 152 disposed on the lower end of the lower hook 151.

[0029] The electronic current transformer 12, electronic voltage transformer 111, integrated module 112, first incoming terminal 13, and post insulator 16 are integrally cast and molded, and are externally wrapped with weather-resistant silicone rubber, possessing excellent insulation performance and outdoor environmental tolerance. The electronic current transformer 12 adopts low-power coil (LPCT) technology, and the electronic voltage transformer 111 uses a thin-film capacitor to operate based on the principle of capacitive voltage division, which collects the current and voltage signals on the high-voltage side in real time, and the integrated module 112 processes and communicates with them.

[0030] The lead screw motor assembly 22 includes a connecting rod drive motor 221 and a ball screw 222 disposed at the output end of the connecting rod drive motor 221.

[0031] The dual rocker structure 24 includes a synchronous shaft 241 threaded onto the output end of the ball screw motor assembly 22, a long connecting rod 242 fixed to the synchronous shaft 241, and a short connecting rod 243 hinged to the other end of the long connecting rod 242. The other end of the short connecting rod 243 is hinged to the rotating ferrule assembly 3. The key to this embodiment is that the synchronous shaft 241 forms a disengaged transmission engagement with the ball screw 222 through its internal thread.

[0032] The synchronous shaft 241 is provided with two extension rods 2411 on both sides. The two extension rods 2411 extend out of the sliding grooves on both sides of the drive housing 21 and are connected to the inner wall of the long connecting rod 242, so that the movement of the synchronous shaft 241 is strictly limited to the trajectory determined by the sliding groove.

[0033] The rotating melt carrier assembly 3 includes a push rod fixing bracket 32 ​​mounted on the lower contact structure 15, a push rod rotating bracket 33 hinged to the other end of the push rod fixing bracket 32, an epoxy resin rod 34 mounted on the other end of the push rod rotating bracket 33, a hook fork 35 disposed on the top of the epoxy resin rod 34, and a melt tube assembly 31 mounted in the middle of the push rod rotating bracket 33.

[0034] The fusible tube assembly 31 further includes a fusible tube 312, a fusible wire 313 disposed in the fusible tube 312, and a fusible tube lower fixing member 314 disposed at the lower end of the fusible tube 312. The fusible tube end cap 311 is disposed at the upper end of the fusible tube 312, and a ring 3112 is disposed on one side of the fusible tube end cap 311. The hook fork 35 is hooked on the ring 3112.

[0035] The upper contact structure 14 further includes an upper contact mounting bracket 143 connected to the upper part between the arc extinguishing shield A 141 and the arc extinguishing shield B 142, a buffer block 144 located between the arc extinguishing shield A 141 and the arc extinguishing shield B 142, a second inlet terminal 145 disposed between the upper contact mounting bracket 143 and the buffer block 144, and an upper contact spring 146 connected between the upper contact mounting bracket 143 and the second inlet terminal 145.

[0036] The temperature measuring element 311 is a magnetically coupled RFID tag.

[0037] In summary, the specific embodiments of this utility model are as follows: In the closed energy storage state: the connecting rod drive motor 221 rotates forward, driving the ball screw 222 to rotate. Due to the threaded engagement between the synchronous shaft 241 and the ball screw 222, and the constraint of its movement by the extended rod 2411 and the sliding groove, the synchronous shaft 241 is driven to move smoothly towards the connecting rod drive motor 221, compressing the energy storage spring 23. Through the long connecting rod 242 and the short connecting rod 243, the rotating molten metal assembly 3 is pushed to rotate upward, finally causing the molten tube end cap 311 to be inserted into the upper contact structure 14. The upper contact spring 146 is pressed and kept in the closed state by the tight buffer block 144. At this time, the double rocker structure is in the mechanical dead point position of the ball screw 222, the mechanism is self-locked, and the energy stored in the energy storage spring 23 is locked by the mechanical structure. Instantaneous tripping process: When the integrated module 112 receives the tripping command, the linkage drive motor 221 drives the ball screw 222 to continue rotating a small angle. This action causes the double rocker structure to rigidly pass the dead point of the ball screw 222 and release the self-locking state. Once the self-locking is released, the huge energy stored in the energy storage spring 23 is rapidly released. Its expansion force instantly overcomes the friction and meshing force between the internal thread of the synchronous shaft 241 and the external thread of the ball screw 222, forcing the internal thread of the synchronous shaft 241 and the thread of the ball screw 222 to engage. After separation, the synchronous shaft 241, long connecting rod 242, and short connecting rod 243 are no longer limited by the rotational speed of the ball screw 222. Instead, under the direct push of the energy storage spring 23, they move at high speed along the guide of the sliding groove. The explosive force is transmitted to the push rod rotating bracket 33 through the short connecting rod 243, thereby driving the entire rotating fusible component assembly 3 to rotate at high speed in a very short time (about 0.4ms). This achieves the separation of the fusible tube end cap 311 from the upper contact structure 14, completing the instantaneous tripping. At the initial stage of tripping, the arc extinguishing cover A141 and the arc extinguishing cover B142 tightly cover the break, effectively extinguishing the arc. At the end of tripping, the double rocker structure reaches the limit position, ensuring the maximum electrical insulation distance.

[0038] To ensure the long-term reliability and durability of the aforementioned "detachable threaded fit", the ball screw 222 is made of high-strength alloy steel and undergoes surface nitriding treatment to obtain extremely high hardness. The internal thread of the synchronous shaft 241 uses a wear-resistant bronze bushing, forming a wear-resistant material pair that facilitates smooth disengagement under heavy force. At the same time, high-performance grease can be filled in the threaded pair and sliding groove to further reduce wear. This design achieves the core safety benefit of millisecond-level electrical fault cutoff at the cost of acceptable, low-frequency mechanical wear.

[0039] The above description is only the optimal solution embodiment of this utility model and is not intended to limit this utility model. Various modifications or substitutions made by those skilled in the art to this utility model without departing from the essence and protection scope of this utility model should also be within the protection scope of this utility model.

Claims

1. A fast-acting electrically operated drop-out fuse with intelligent monitoring, characterized in that: The device includes an insulating support body (1), a drive device (2) mounted on one side of the insulating support body (1), and a rotating fusible component assembly (3) rotatably fitted to a lower contact structure (15) at the lower end of the insulating support body (1). The insulating support body (1) includes a voltage transformer assembly (11) and an electronic current transformer (12) disposed on the upper end of the voltage transformer assembly (11). The drive device (2) includes a drive housing (21), a lead screw motor assembly (22) disposed in the drive housing (21), an energy storage spring (23) sleeved on the output end of the lead screw motor assembly (22), and a threaded connection to... The output end of the screw motor assembly (22) has a double rocker structure (24), the other end of which is hinged to the rotating fusible component assembly (3). The rotating fusible component assembly (3) includes a fusible tube assembly (31). The upper end of the fusible tube assembly (31) is provided with a fusible tube end cap (311). The fusible tube end cap (311) integrates a temperature measuring element (3111). When the circuit is closed, the fusible tube end cap (311) is engaged in the upper contact structure (14) at the upper end of the insulating support body (1). The upper contact structure (14) includes an arc extinguishing cover A (141) and an arc extinguishing cover B (142) located on both sides.

2. The instantaneous electric drop-out fuse with intelligent monitoring according to claim 1, characterized in that: The insulating support body (1) also includes a first incoming terminal (13) disposed on the upper end of the electronic current transformer (12) and a post insulator (16) disposed on the lower end of the voltage transformer assembly (11). The voltage transformer assembly (11) includes two electronic voltage transformers (111) and an integrated module (112) connected between the two electronic voltage transformers (111). The lower contact structure (15) includes a lower hook (151) disposed on one side of the post insulator (16) and a lower outgoing terminal (152) disposed on the lower end of the lower hook (151).

3. A fast-acting electrically operated drop-out fuse with intelligent monitoring according to claim 2, characterized in that: The electronic current transformer (12), electronic voltage transformer (111), integrated module (112), first incoming terminal (13) and post insulator (16) are integrally cast and molded, and are wrapped with weather-resistant silicone rubber.

4. The instantaneous electrically operated drop-out fuse with intelligent monitoring according to claim 1, characterized in that: The lead screw motor assembly (22) includes a connecting rod drive motor (221) and a ball screw (222) disposed at the output end of the connecting rod drive motor (221).

5. A fast-acting electrically operated drop-out fuse with intelligent monitoring as described in claim 1, characterized in that: The dual rocker structure (24) includes a synchronous shaft (241) threaded onto the output end of the lead screw motor assembly (22), a long connecting rod (242) fixed to the synchronous shaft (241), and a short connecting rod (243) hinged to the other end of the long connecting rod (242), the other end of the short connecting rod (243) being hinged to the rotating carrier assembly (3).

6. A fast-acting electrically operated drop-out fuse with intelligent monitoring according to claim 5, characterized in that: The synchronous shaft (241) is provided with extension rods (2411) on both sides. The two extension rods (2411) extend out of the sliding grooves on both sides of the drive housing (21) and are connected to the inner wall of the long connecting rod (242).

7. A fast-acting electrically operated drop-out fuse with intelligent monitoring according to claim 1, characterized in that: The rotating melt carrier assembly (3) includes a push rod fixing bracket (32) mounted on the lower contact structure (15), a push rod rotating bracket (33) hinged to the other end of the push rod fixing bracket (32), an epoxy resin rod (34) mounted on the other end of the push rod rotating bracket (33), a hook fork (35) disposed on the top of the epoxy resin rod (34), and a melt tube assembly (31) mounted in the middle of the push rod rotating bracket (33).

8. A fast-acting electrically operated drop-out fuse with intelligent monitoring according to claim 7, characterized in that: The fusion tube assembly (31) further includes a fusion tube (312), a fusion wire (313) disposed in the fusion tube (312), and a fusion tube lower fixing member (314) disposed at the lower end of the fusion tube (312). The fusion tube end cap (311) is disposed at the upper end of the fusion tube (312), and a ring (3112) is disposed on one side of the fusion tube end cap (311). The hook fork (35) is hooked on the ring (3112).

9. A fast-acting electrically operated drop-out fuse with intelligent monitoring according to claim 1, characterized in that: The upper contact structure (14) further includes an upper contact mounting bracket (143) connected to the upper part between the arc extinguishing shield A (141) and the arc extinguishing shield B (142), a buffer block (144) located between the arc extinguishing shield A (141) and the arc extinguishing shield B (142), a second inlet terminal (145) disposed between the upper contact mounting bracket (143) and the buffer block (144), and an upper contact spring (146) connected between the upper contact mounting bracket (143) and the second inlet terminal (145).

10. A fast-acting electrically operated drop-out fuse with intelligent monitoring according to claim 1, characterized in that: The temperature measuring element (3111) is a magnetically coupled RFID tag.

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