A smart electric drop-out fuse

Abstract

This invention relates to the field of fuse technology and discloses an intelligent electric drop-out fuse, comprising a support assembly, the support assembly including an insulating support, a fixing member fixedly connected to one side of the top of the insulating support, a moving contact piece fixedly connected to the inner side of the top of the fixing member, a solenoid coil electrically connected to the top of the moving contact piece, a fuse tube assembly mounted at the bottom of the moving contact piece, and a self-cleaning assembly fixedly connected to one side of the top of the fuse tube assembly, the self-cleaning assembly including a mounting plate, a slider mounted on the top of the mounting plate, and a scraper fixedly connected to the top of the slider. When the solenoid coil is energized, it generates a magnetic field, eliminating contact welding. The fuse tube assembly releases air, releasing the locking block and allowing the scraper to contact the contact. The self-cleaning mechanism, combined with the drop-out of the fuse tube assembly, prevents the fuse from failing to drop due to welding of the moving contact piece. The angle between the scraper and the top of the slider is between 60-75°, avoiding the problem of the fuse failing to drop due to welding of the moving contact piece.

Description

Technical Field

[0001] This invention relates to the field of fuse technology, and more specifically to an intelligent electric drop-out fuse. Background Technology

[0002] Drop-out fuses are widely used outdoor high-voltage protection devices in 10kV distribution lines and transformers. They integrate overload and short-circuit protection functions and have a significant characteristic: after the fuse element melts, the fuse tube automatically drops, forming a clearly visible break point. Due to their simple structure, low price, convenient maintenance, and intuitive operation, they are very common in power distribution networks. However, in existing intelligent electric drop-out fuses, when the contacts break or connect the circuit, local overheating can cause the metal material on the contact surface to melt or even vaporize. When the contacts cool, the molten metal solidifies and welds the moving and stationary contacts together, preventing normal separation and thus preventing the fuse from dropping. Furthermore, during the opening and closing process, the oxide layer and slight weld points on the surface of the stationary contact cause poor contact between the fuse element and the contact, resulting in excessive contact resistance and overheating, affecting the intelligent fuse's judgment. Summary of the Invention

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides an intelligent electric drop-out fuse to solve the problems existing in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an intelligent electric drop-out fuse, comprising a support assembly, the support assembly comprising an insulating support, a fixing member fixedly connected to one side of the top of the insulating support, a moving contact piece fixedly connected to the inner side of the top of the fixing member, a solenoid coil electrically connected to the top of the moving contact piece, a fuse tube assembly mounted at the bottom of the moving contact piece, a self-cleaning component fixedly connected to one side of the top of the fuse tube assembly, the self-cleaning component comprising a mounting plate, a slider mounted on the top of the mounting plate, and a scraper fixedly connected to the top of the slider; The solenoid coil generates a magnetic field when energized, which eliminates the contact welding. The fusible tube assembly releases the locking block by venting, allowing the scraper to contact the contact. With the help of the falling action of the fusible tube assembly, the bottom of the moving contact plate is self-cleaned. The angle between the scraper blade and the top of the slider is between 60-75°. The scraper blade cleans the bottom of the moving contact plate. The cleaning efficiency can be improved or the scratch depth can be reduced by adjusting the angle of the scraper blade.

[0005] Furthermore, a fastening component is fixedly connected to one side of the top of the support assembly, a fusible component is electrically connected to the bottom of the fastening component, and a transmission component is electrically connected to the bottom of the fusible component.

[0006] Furthermore, an upper ceramic block is fixedly connected to the top of the insulating support column, a lower ceramic block is fixedly connected to the bottom of the insulating support column, an installation opening is provided in the middle of the insulating support column, an installation base is fixedly connected inside the installation opening, a movable connecting rod is fixedly connected to the front of the middle of the insulating support column, a power source assembly is fixedly connected to the top of the installation base, and one end of the movable connecting rod is movably sleeved inside the power source assembly.

[0007] Furthermore, the movable link includes a ceramic sleeve, inside which a movable rod is slidably sleeved. One end of the movable rod is fixedly connected to a connector, which is located outside the ceramic sleeve. The other end of the movable rod is fixedly connected to a toothed plate, and one end of the toothed plate is fixedly connected to a short rod.

[0008] Furthermore, the power source assembly includes a motor protective cover, a DC motor is fixedly connected to the inner side of the back of the motor protective cover, a gear is fixedly connected to the drive end of the DC motor, an upper sleeve is fixedly connected to the top of one side of the motor protective cover, a lower sleeve is fixedly connected to the bottom of one side of the motor protective cover, a short rod is slidably sleeved inside the upper sleeve, a moving rod is slidably sleeved inside the lower sleeve, the bottom of the gear meshes with a gear plate, and the motor protective cover is fixedly connected to the top of the mounting base.

[0009] Furthermore, the fastening assembly includes a fixing member, an upper fastener is fixedly connected to one end of the top of the fixing member, the moving contact piece is electrically connected to the upper fastener, the top end of the solenoid coil is electrically connected to the upper fastener, a side plate is fixedly connected to one end of the top inner side of the fixing member, a clamp is fixedly connected to the back of the side plate, and the opening of the clamp faces the front of the side plate.

[0010] Furthermore, the fuse assembly includes a fuse tube assembly, a connector is fixedly sleeved on the side of the fuse tube assembly, a push rod is fixedly connected to the bottom of one end of the connector, a trip hook is fixedly connected to the front of the connector, an operating ring is fixedly connected to one side of the top of the fuse tube assembly, the trip hook contacts the operating ring, the top of the fuse tube assembly contacts the moving contact piece, and the inner side of the clamp holds the side of the top of the fuse tube assembly.

[0011] Furthermore, the molten tube assembly includes a circular tube, the inner side of the bottom end of the circular tube is electrically connected to a melt, the top end of the melt is in contact with a moving contact piece, an operating ring is fixedly connected to the side of the top end of the circular tube, a gas distribution port is provided on one side of the top end of the circular tube, and a gas-generating material is filled between the circular tube and the melt.

[0012] Furthermore, one side of the mounting plate is fixedly connected to one side of the fusion tube assembly and is located above the gas distribution port. A plate shell is fixedly connected to the top edge of the mounting plate. Several springs are fixedly connected to the top of the mounting plate. A slider is fixedly connected to the top of the springs, and the side of the slider is slidably sleeved onto the plate shell. The angle between the scraper blade and the top of the slider is between 60-75°. A rectangular groove is provided in the middle of the top of the mounting plate. An inner shaft is rotatably connected to the inner side of the rectangular groove. A connecting rod is rotatably sleeved on the inner side. A locking block is fixedly connected to the top of the connecting rod. A wind baffle is fixedly connected to the bottom end of the connecting rod. A right-angled groove is provided on one side of the bottom end of the locking block. The right-angled groove fits against the right-angled edge of one end of the top of the slider.

[0013] Furthermore, the transmission movable component includes a main conductive component, one end of which is electrically connected to a lower fastener. The top of one end of the fusion tube assembly is fixedly connected to one side of the bottom end of the insulating support. The inner side of the main conductive component is rotatably connected to a rotating shaft. The side of the rotating shaft is fixedly connected to the bottom end of the fusion tube assembly, and the fusion tube assembly is electrically connected to the main conductive component. A movable mechanism is rotatably sleeved on one side of one end of the main conductive component. One end of the movable mechanism is slidably sleeved to the bottom end of the push rod. One end of the top of the movable mechanism is fixedly connected to a shaft moving plate. One end of the axial plate is provided with a sliding groove, and a rotating roller is movably sleeved at one end of the sliding groove. An elastic component is fixedly connected to the bottom of the rotating roller, and one end of the elastic component is fixedly connected to the other end of the sliding groove. A connecting piece is rotatably sleeved at one end of the rotating roller, and a rotating ring is rotatably sleeved at the other end of the rotating roller. A piston rod is fixedly connected to the side of the rotating ring, and an air pipe is slidably sleeved at one end of the piston rod. An arc-shaped pipe is fixedly connected to the bottom end of the air pipe, and a straight pipe is fixedly connected to one end of the arc-shaped pipe. A telescopic component is fixedly connected to one end of the straight pipe. The telescopic component consists of an air cylinder and a connecting roller. A straight pipe is fixedly connected to one side of the bottom end of the air cylinder, and a connecting roller is slidably sleeved on the inner side of the air cylinder. The top end of the connecting roller is fixedly connected to the bottom of the push rod.

[0014] The technical effects and advantages of this invention are as follows: 1. By using the solenoid coil at the top of the moving contact piece, a longitudinal magnetic field is generated when it is energized. The longitudinal magnetic field is parallel to the arc axis. The longitudinal magnetic field can constrain the arc particles and make them spread evenly on the bottom surface of the moving contact piece, forming a low-energy-density "diffusion arc" instead of a high-energy-density "contraction arc". This reduces the evaporation and erosion of the moving contact piece, eliminates the possibility of welding between the moving and stationary contacts, and avoids the problem of the fuse failing to fall due to welding of the moving contact piece.

[0015] 2. The high temperature generated by the melting of the molten metal causes the gas-generating material to decompose and produce gas, which in turn causes the pressure inside the circular tube to rise sharply. The gas is ejected at high speed from the top of the circular tube, and some of the gas is discharged from the gas distribution port of the circular tube and blown towards the wind baffle. The wind baffle is pushed off course by the wind force, which in turn causes the locking block to release the slider, causing the slider to move upward under the action of the spring. This further causes the scraper to contact the bottom of the moving contact plate. As the molten metal assembly falls, the scraper moves and automatically cleans the oxide layer and slight weld points on the bottom surface of the moving contact plate. This avoids the problem that the oxide layer and slight weld points on the bottom surface of the moving contact plate can cause poor contact between the molten metal and the contact, excessive contact resistance leading to overheating, and affecting the judgment of the intelligent fuse. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the support component structure of the present invention; Figure 3 This is a schematic diagram of the structure of the movable link of the present invention; Figure 4 This is a schematic diagram of the power source component structure of the present invention; Figure 5 This is a schematic diagram of the fastening assembly structure of the present invention; Figure 6 This is a schematic diagram of the fuse assembly structure of the present invention; Figure 7 This is a schematic diagram of the fuse tube assembly structure of the present invention; Figure 8 This is a schematic diagram of the self-cleaning component structure of the present invention; Figure 9 This is a side view of the transmission component of the present invention. Figure 10 This is a top view of the transmission moving component of the present invention; Figure 11 This is a cross-sectional structural diagram of the transmission moving component of the present invention.

[0017] The attached figures are labeled as follows: 1. Support assembly; 101. Insulating support; 102. Movable connecting rod; 1021. Ceramic sleeve; 1022. Moving rod; 1023. Connector; 103. Power source assembly; 1031. Motor protective cover; 1032. DC motor; 2. Fastening assembly; 201. Fixing component; 202. Moving contact piece; 203. Side plate; 204. Solenoid coil; 3. Fuse assembly; 301. Fusion tube assembly; 3011, round tube; 3012, molten metal; 302, push rod; 303, trip hook; 304, self-cleaning assembly; 3041, mounting plate; 3042, shell; 3043, scraper; 3044, locking block; 3045, wind deflector; 4. Transmission moving assembly; 401, main conductive accessory; 402, moving mechanism; 403, shaft moving plate; 404, air pipe; 405, telescopic assembly. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The intelligent disconnecting electric drop-out fuse involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Reference Figure 1 The present invention provides an intelligent electric drop-out fuse, including a support assembly 1, a fastening assembly 2 fixedly connected to one side of the top of the support assembly 1, a fuse assembly 3 electrically connected to the bottom of the fastening assembly 2, and a transmission movable assembly 4 electrically connected to the bottom of the fuse assembly 3.

[0020] In this embodiment, it is necessary to specifically explain that the present invention is installed at a downward tilt angle of 15°-30°. The fastening component 2 reduces the evaporation and erosion of the moving contact piece, eliminates the possibility of welding between the moving and stationary contacts, and avoids the problem that the fuse cannot fall off due to welding of the moving contact piece. The fuse component 3 avoids the problem that the oxide layer and slight welding points on the bottom surface of the moving contact piece cause poor contact between the melt and the contact, excessive contact resistance leading to overheating, and affecting the judgment of the smart fuse. The specific structure and working principle of the above components will be explained in detail later.

[0021] Reference Figure 2The support assembly 1 includes an insulating support 101. An upper ceramic block is fixedly connected to the top of the insulating support 101, and a lower ceramic block is fixedly connected to the bottom of the insulating support 101. An installation opening is provided in the middle of the insulating support 101, and an installation base is fixedly connected inside the installation opening. A movable connecting rod 102 is fixedly connected to the front of the middle of the insulating support 101. A power source assembly 103 is fixedly connected to the top of the installation base, and one end of the movable connecting rod 102 is movably sleeved inside the power source assembly 103.

[0022] Reference Figure 3 The movable connecting rod 102 includes a ceramic housing 1021, a movable rod 1022 is slidably sleeved inside the ceramic housing 1021, one end of the movable rod 1022 is fixedly connected to a connector 1023 and the connector 1023 is outside the ceramic housing 1021, the other end of the movable rod 1022 is fixedly connected to a toothed plate, and one end of the toothed plate is fixedly connected to a short rod.

[0023] Reference Figure 4 The power source assembly 103 includes a motor protective cover 1031. A DC motor 1032 is fixedly connected to the inner side of the back of the motor protective cover 1031. A gear is fixedly connected to the drive end of the DC motor 1032. An upper tube sleeve is fixedly connected to the top of one side of the motor protective cover 1031. A lower tube sleeve is fixedly connected to the bottom of one side of the motor protective cover 1031. A short rod is slidably sleeved inside the upper tube sleeve. A moving rod 1022 is slidably sleeved inside the lower tube sleeve. The bottom of the gear meshes with a gear plate. The motor protective cover 1031 is fixedly connected to the top of the mounting base.

[0024] In this embodiment, it should be specifically noted that the motor protective cover 1031, the upper sleeve, and the lower sleeve are made of ABS engineering material, which has strong anti-aging properties and a waterproof rating of IP6. The DC motor 1032 is a high-power DC motor, suitable for instantaneous start-up, with a closing time of 0.5S and a opening time of 0.2S.

[0025] Reference Figure 5 The fastening assembly 2 includes a fixing member 201. One end of the fixing member 201 is fixedly connected to one side of the top of the insulating support column 101. An upper fastener is fixedly connected to one end of the top of the fixing member 201. A moving contact piece 202 is fixedly connected to the inner side of the top of the fixing member 201, and the moving contact piece 202 is electrically connected to the upper fastener. A solenoid coil 204 is electrically connected to the top of the moving contact piece 202, and the top end of the solenoid coil 204 is electrically connected to the upper fastener. A side plate 203 is fixedly connected to one end of the inner side of the top of the fixing member 201. A clamp is fixedly connected to the back of the side plate 203, and the opening of the clamp faces the front of the side plate 203.

[0026] By energizing the solenoid coil 204 at the top of the moving contact piece 202, a longitudinal magnetic field is generated. This longitudinal magnetic field is parallel to the arc axis and can constrain the arc particles, causing them to diffuse evenly on the bottom surface of the moving contact piece 202, forming a low-energy-density "diffusion arc" instead of a high-energy-density "contraction arc". This reduces the evaporation and erosion of the moving contact piece 202, eliminates the possibility of welding between the moving and stationary contacts, and avoids the problem of the fuse failing to fall due to welding of the moving contact piece 202.

[0027] Reference Figure 6 The fuse assembly 3 includes a fuse tube assembly 301. A connector is fixedly sleeved on the side of the fuse tube assembly 301. A push rod 302 is fixedly connected to the bottom of one end of the connector. A trip hook 303 is fixedly connected to the front of the connector. An operating ring is fixedly connected to one side of the top of the fuse tube assembly 301. The trip hook 303 contacts the operating ring. The top of the fuse tube assembly 301 contacts the moving contact piece 202. The inner side of the clamp holds the side of the top of the fuse tube assembly 301. A self-cleaning assembly 304 is fixedly connected to one side of the top of the fuse tube assembly 301.

[0028] Reference Figure 7 The melt tube assembly 301 includes a circular tube 3011, a melt 3012 electrically connected to the inner side of the bottom end of the circular tube 3011, the top end of the melt 3012 contacting the moving contact piece 202, an operating ring fixedly connected to the side of the top end of the circular tube 3011, a gas distribution port provided on one side of the top end of the circular tube 3011, and a gas-generating material filled between the circular tube 3011 and the melt 3012.

[0029] In this embodiment, it should be specifically noted that the gas-generating material is mainly a metal salt compound, preferably calcium carbonate or magnesium carbonate.

[0030] Reference Figure 8 The self-cleaning component 304 includes a mounting plate 3041. One side of the mounting plate 3041 is fixedly connected to one side of the fusible tube assembly 301 and is located above the air distribution port. A shell 3042 is fixedly connected to the top edge of the mounting plate 3041. Several springs are fixedly connected to the top of the mounting plate 3041. A slider is fixedly connected to the top of each spring, and the side of the slider is slidably fitted onto the shell 3042. A scraper 3043 is fixedly connected to the top of the slider. The angle between the scraper 3043 and the top of the slider is between 60-75°. A rectangular groove is provided in the middle of the top of the mounting plate 3041. An inner shaft is rotatably connected to the inner side of the rectangular groove. A connecting rod is rotatably fitted onto the inner side. A locking block 3044 is fixedly connected to the top of the connecting rod. A wind deflector 3045 is fixedly connected to the bottom end of the connecting rod. A right-angled groove is provided on one side of the bottom end of the locking block 3044. The right-angled groove fits against the right-angled edge of one end of the top of the slider.

[0031] In this embodiment, it is necessary to further explain that the right-angled groove fits into the right-angled edge of the top end of the slider, limiting the upward movement of the slider. When high-speed gas is discharged from the air outlet of the circular tube 3011, the baffle plate 3045 is blown and deflected outward, thereby causing the locking block 3044 to move towards the circular tube 3011. The locking block 3044 locks the slider, and the slider moves upward under the action of the spring force. This causes the scraper 3043 to abut against the bottom of the moving contact piece 202. The larger the angle between the scraper 3043 and the top of the slider (within 60-75°), the more efficient it is at removing the oxide layer or solder joints on the bottom surface of the moving contact piece 202, resulting in higher cleaning efficiency. However, it also results in deeper scratches on the bottom of the moving contact piece 202. The angle can be set according to actual needs.

[0032] The high temperature generated by the melting of the melt 3012 causes the gas-generating material to decompose and produce gas, which in turn causes the pressure inside the circular tube 3011 to rise sharply. The gas is ejected at high speed from the top of the circular tube 3011, and some of the gas is discharged from the gas distribution port of the circular tube 3011 and blown towards the wind baffle 3045. The wind baffle 3045 is pushed off by the wind force, which causes the locking block 3044 to release the locking of the slider. The slider moves upward under the action of the spring, which further causes the scraper 3043 to contact the bottom of the moving contact piece 202. As the fuse tube assembly 301 falls, the scraper 3043 moves and automatically cleans the oxide layer and slight weld points on the bottom surface of the moving contact piece 202. This avoids the problem that the oxide layer and slight weld points on the bottom surface of the moving contact piece 202 may cause poor contact between the melt and the contact, excessive contact resistance, and overheating, which would affect the judgment of the intelligent fuse.

[0033] Reference Figures 9 to 11The transmission movable component 4 includes a main conductive component 401, one end of which is electrically connected to a lower fastener. The top of one end of the fusible tube assembly 301 is fixedly connected to one side of the bottom end of the insulating support column 101. A rotating shaft is rotatably connected to the inner side of the main conductive component 401. The side of the rotating shaft is fixedly connected to the bottom end of the fusible tube assembly 301, and the fusible tube assembly 301 is electrically connected to the main conductive component 401. A movable mechanism 402 is rotatably sleeved on the side of one end of the main conductive component 401. One end of the movable mechanism 402 is slidably sleeved on the bottom end of the push rod 302. A shaft moving plate 403 is fixedly connected to one end of the top of the movable mechanism 402. One end of the shaft moving plate 403 is provided with a sliding groove, and one end of the sliding groove is movable. A rotating roller is movably sleeved, and an elastic component is fixedly connected to the bottom of the rotating roller. One end of the elastic component is fixedly connected to the other end of the slide groove. A connector 1023 is rotatably sleeved to one end of the rotating roller, and a rotating ring is rotatably sleeved to the other end of the rotating roller. A piston rod is fixedly connected to the side of the rotating ring. An air pipe 404 is slidably sleeved to one end of the piston rod. An arc-shaped pipe is fixedly connected to the bottom end of the air pipe 404. A straight pipe is fixedly connected to one end of the arc-shaped pipe. A telescopic component 405 is fixedly connected to one end of the straight pipe. The telescopic component 405 consists of an air cylinder and a connecting roller. A straight pipe is fixedly connected to one side of the bottom end of the air cylinder. A connecting roller is slidably sleeved to the inner side of the air cylinder. The top end of the connecting roller is fixedly connected to the bottom of the push rod 302. In this embodiment, it is necessary to further explain that the DC motor 1032 drives the gear to rotate, and under the meshing action, the gear plate moves, which in turn causes the moving rod 1022 to move obliquely downward. This causes the connecting piece 1023 to push the piston rod obliquely downward through the rotating roller, so that the air in the air pipe 404 is discharged into the air cylinder through the arc-shaped pipe and the straight pipe, which increases the pressure of the air cylinder, pushes out the connecting roller, and causes the push rod 302 to move upward, causing the trip hook to push the operating ring, releasing the compression of the moving contact, and causing the fuse assembly 301 to fall, realizing active drop circuit breaking. This process is existing technology, so it will not be described in detail.

[0034] The working principle of this invention is as follows: When the solenoid coil 204 at the top of the moving contact piece 202 is energized, a longitudinal magnetic field is generated. The longitudinal magnetic field is parallel to the arc axis. The longitudinal magnetic field can constrain the arc particles and make them diffuse evenly on the bottom surface of the moving contact piece 202, forming a low-energy-density "diffusion arc" instead of a high-energy-density "contraction arc". This reduces the evaporation and erosion of the moving contact piece 202, eliminates the possibility of welding between the moving and stationary contacts, and avoids the problem that the fuse cannot fall off due to welding of the moving contact piece 202. The high temperature generated by the melting of the melt 3012 causes the gas-generating material to decompose and produce gas, which in turn causes the pressure inside the circular tube 3011 to rise sharply. The gas is ejected at high speed from the top of the circular tube 3011, and some of the gas is discharged from the gas distribution port of the circular tube 3011 and blown towards the wind baffle 3045. The wind baffle 3045 is pushed off by the wind force, which causes the locking block 3044 to release the locking of the slider. The slider moves upward under the action of the spring, which further causes the scraper 3043 to contact the bottom of the moving contact piece 202. As the fuse tube assembly 301 falls, the scraper 3043 moves and automatically cleans the oxide layer and slight weld points on the bottom surface of the moving contact piece 202. This avoids the problem that the oxide layer and slight weld points on the bottom surface of the moving contact piece 202 may cause poor contact between the melt and the contact, excessive contact resistance, and overheating, which would affect the judgment of the intelligent fuse.

[0035] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other. In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 smart electric drop-out fuse, comprising a support assembly (1), the support assembly (1) comprising an insulating support (101), a fixing member (201) fixedly connected to one side of the top of the insulating support (101), a moving contact piece (202) fixedly connected to the inner side of the top of the fixing member (201), a solenoid coil (204) electrically connected to the top of the moving contact piece (202), a fuse tube assembly (301) mounted at the bottom of the moving contact piece (202), and a self-cleaning component (304) fixedly connected to one side of the top of the fuse tube assembly (301), characterized in that, The self-cleaning component (304) includes a mounting plate (3041), a slider is mounted on the top of the mounting plate (3041), and a scraper (3043) is fixedly connected to the top of the slider. The solenoid coil (204) generates a magnetic field when energized, which eliminates the contact welding. The venting of the fusion tube assembly (301) releases the locking block (3044), allowing the scraper (3043) to contact the contact. With the drop of the fusion tube assembly (301), the bottom of the moving contact piece (202) is self-cleaned. The angle between the scraper (3043) and the top of the slider is between 60-75°. The scraper (3043) cleans the bottom of the moving contact plate (202). The cleaning efficiency can be improved or the scratch depth can be reduced by adjusting the angle of the scraper (3043).

2. The intelligent electric drop-out fuse according to claim 1, characterized in that: A fastening component (2) is fixedly connected to one side of the top of the support component (1), and a fusible component (3) is electrically connected to the bottom of the fastening component (2), and a transmission moving component (4) is electrically connected to the bottom of the fusible component (3).

3. The intelligent electric drop-out fuse according to claim 2, characterized in that: An upper ceramic block is fixedly connected to the top of the insulating support (101), and a lower ceramic block is fixedly connected to the bottom of the insulating support (101). An installation port is provided in the middle of the insulating support (101), and an installation base is fixedly connected inside the installation port. A movable connecting rod (102) is fixedly connected to the front of the middle of the insulating support (101), and a power source assembly (103) is fixedly connected to the top of the installation base. One end of the movable connecting rod (102) is movably sleeved inside the power source assembly (103).

4. The intelligent electric drop-out fuse according to claim 3, characterized in that: The movable link (102) includes a ceramic housing (1021), a movable rod (1022) is slidably sleeved inside the ceramic housing (1021), one end of the movable rod (1022) is fixedly connected to a connector (1023), and the connector (1023) is outside the ceramic housing (1021), the other end of the movable rod (1022) is fixedly connected to a toothed plate, and one end of the toothed plate is fixedly connected to a short rod.

5. The intelligent electric drop-out fuse according to claim 4, characterized in that: The power source assembly (103) includes a motor protective cover (1031), a DC motor (1032) is fixedly connected to the inner side of the back of the motor protective cover (1031), a gear is fixedly connected to the drive end of the DC motor (1032), an upper tube sleeve is fixedly connected to the top of one side of the motor protective cover (1031), a lower tube sleeve is fixedly connected to the bottom of one side of the motor protective cover (1031), a short rod is slidably sleeved inside the upper tube sleeve, a moving rod (1022) is slidably sleeved inside the lower tube sleeve, the bottom of the gear meshes with a gear plate, and the motor protective cover (1031) is fixedly connected to the top of the mounting base.

6. The intelligent electric drop-out fuse according to claim 5, characterized in that: The fastening assembly (2) includes a fastener (201), one end of the top of the fastener (201) is fixedly connected to an upper fastener, the moving contact piece (202) is electrically connected to the upper fastener, the top end of the solenoid coil (204) is electrically connected to the upper fastener, one end of the top inner side of the fastener (201) is fixedly connected to a side plate (203), the back of the side plate (203) is fixedly connected to a clamp, and the opening of the clamp faces the front of the side plate (203).

7. The intelligent electric drop-out fuse according to claim 6, characterized in that: The fuse assembly (3) includes a fuse tube assembly (301), a connector is fixedly sleeved on the side of the fuse tube assembly (301), a push rod (302) is fixedly connected to the bottom of one end of the connector, a trip hook (303) is fixedly connected to the front of the connector, an operating ring is fixedly connected to one side of the top of the fuse tube assembly (301), the trip hook (303) contacts the operating ring, the top of the fuse tube assembly (301) contacts the moving contact piece (202), and the inner side of the clamp holds the side of the top of the fuse tube assembly (301).

8. The intelligent disconnecting electrically operated drop-out fuse according to claim 7, characterized in that: The melt tube assembly (301) includes a circular tube (3011), the inner side of the bottom end of the circular tube (3011) is electrically connected to a melt (3012), the top end of the melt (3012) is in contact with a moving contact piece (202), an operating ring is fixedly connected to the side of the top end of the circular tube (3011), a gas distribution port is provided on one side of the top end of the circular tube (3011), and a gas-generating material is filled between the circular tube (3011) and the melt (3012).

9. The intelligent electric drop-out fuse according to claim 8, characterized in that: One side of the mounting plate (3041) is fixedly connected to one side of the fusion tube assembly (301) and located above the gas distribution port. A plate shell (3042) is fixedly connected to the top edge of the mounting plate (3041). Several springs are fixedly connected to the top of the mounting plate (3041). A slider is fixedly connected to the top of the spring, and the side of the slider is slidably sleeved onto the plate shell (3042). The angle between the scraper (3043) and the top of the slider is between 60-75°. A rectangular groove is provided in the middle of the top of the mounting plate (3041). An inner shaft is rotatably connected to the inner side of the rectangular groove. A connecting rod is rotatably sleeved on the inner side. A locking block (3044) is fixedly connected to the top of the connecting rod. A wind deflector (3045) is fixedly connected to the bottom of the connecting rod. A right-angled groove is provided on one side of the bottom of the locking block (3044). The right-angled groove fits against the right-angled edge of one end of the top of the slider.

10. The intelligent disconnecting electrically operated drop-out fuse according to claim 9, characterized in that: The transmission moving assembly (4) includes a main conductive component (401), one end of which is electrically connected to a lower fastener. The top of one end of the fusible tube assembly (301) is fixedly connected to one side of the bottom end of the insulating support (101). The inner side of the main conductive component (401) is rotatably connected to a rotating shaft. The side of the rotating shaft is fixedly connected to the bottom end of the fusible tube assembly (301), and the fusible tube assembly (301) is electrically connected to the main conductive component (401). The side of one end of the main conductive component (401) is rotatably sleeved with a moving mechanism (402). One end of the moving mechanism (402) is slidably sleeved with the bottom end of the push rod (302). One end of the top of the moving mechanism (402) is fixedly connected to a shaft moving plate (403). One end of the axial plate (403) is provided with a sliding groove, and a rotating roller is movably sleeved at one end of the sliding groove. An elastic component is fixedly connected to the bottom of the rotating roller, and one end of the elastic component is fixedly connected to the other end of the sliding groove. A connecting piece (1023) is rotatably sleeved at one end of the rotating roller, and a rotating ring is rotatably sleeved at the other end of the rotating roller. A piston rod is fixedly connected to the side of the rotating ring, and an air pipe (404) is slidably sleeved at one end of the piston rod. An arc-shaped pipe is fixedly connected to the bottom end of the air pipe (404), and a straight pipe is fixedly connected to one end of the arc-shaped pipe. A telescopic component (405) is fixedly connected to one end of the straight pipe. The telescopic component (405) consists of an air cylinder and a connecting roller. A straight pipe is fixedly connected to one side of the bottom end of the air cylinder, and a connecting roller is slidably sleeved on the inner side of the air cylinder. The top end of the connecting roller is fixedly connected to the bottom of the push rod (302).

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