A fast-breaking electrical fire protection device

Abstract

The invention discloses a fast-disconnecting electrical fire protection device, comprising a protection device housing, an inlet bushing is arranged below the left side of the protection device housing, and an inlet connecting rod is connected and installed on the right side of the inlet bushing, an outlet bushing is arranged below the right side of the protection device housing, and an outlet connecting rod is connected and installed on the left side of the outlet bushing, the inlet connecting rod and the outlet connecting rod are both located inside an insulating box, and the insulating box is installed below the inside of the protection device housing, an electrical component is arranged inside the protection device housing, a temperature sensor is installed at the bottom of the electrical component, and an energy storage motor is connected and installed below the temperature sensor, heat dissipation windows are installed on the left and right sides of the protection device housing, and heat dissipation fans are installed inside the heat dissipation windows. The fast-disconnecting electrical fire protection device can quickly disconnect the connection structure through mechanical linkage when a line fault occurs, and start the heat dissipation fan to dissipate heat inside the protection device, so as to prevent the reset connection from affecting the next use.

Description

Technical Field

[0001] The invention relates to the technical field of electrical fire protection devices, in particular to a fast-breaking electrical fire protection device. Background Art

[0002] With the growing demand for electricity and the continuous increase in electrical equipment, in the process of electricity use, in order to prevent electric shock and fire accidents caused by defects in the electrical equipment itself or improper use, a current limiter must be installed in the circuit. The current limiter is a device used to limit the current size in the circuit, which can limit the fault short-circuit current and improve the stability of the power grid. The ideal current limiter has no effect on the normal operation of the power grid, and can limit the short-circuit current to close to the rated current value in the event of a fault. The commonly used current limiter is the superconducting current limiter, which utilizes the physical properties of the superconducting state and the normal state of the superconductor. When the line is operating normally, the superconductor exhibits zero impedance or extremely small impedance, which does not cause any adverse effect on power transmission. When a line fails and the current passing through the superconductor exceeds a certain value, the superconductor will instantly change to a normal state, and an appropriate impedance will be generated to achieve current limiting. When the fault line is disconnected or the fault disappears, the current limiter automatically resets.

[0003] Among the existing current limiting protectors, there is a current limiting electrical fire protection protector with a publication number of CN113904221A, whose technical solution is as follows: it includes a protector shell, both sides of the protector shell are fixedly provided with connecting mechanisms, the front lower panel and the front upper panel in the protector shell are movably connected through the connecting mechanism, a movable mounting mechanism is arranged inside the protector shell, the movable mounting mechanism is fixedly connected to the front upper panel in the protector shell, a locking mechanism and a limiting mechanism are arranged on the top of the inner cavity of the protector shell, the locking mechanism and the limiting mechanism are both fixedly connected to the front upper panel, and the lifting slider in the locking mechanism drives the locking rod to disengage from the locking sleeve when it descends, thereby releasing the lock between the rear panel and the front upper panel. The present invention can more conveniently inspect and repair the electrical components inside the protector shell, and at the same time, there is no need to disassemble the parts during the inspection process, thereby effectively avoiding the situation where the parts are damaged or lost due to disassembly.

[0004] Existing electrical fire protectors are not able to disconnect quickly enough before the temperature is too high to cause a fire when a line fault occurs. Moreover, when the line connection is normal after disconnection, the protector itself cannot be cooled, which affects the next use of the electrical fire protector after resetting.

[0005] In view of this, we conducted in-depth research on the above issues, which led to the present case.

[0006] In view of the above problems, an innovative design is carried out on the basis of the original electrical fire protector. Summary of the invention

[0007] The object of the present invention is to provide a fast-disconnecting electrical fire protector to solve the problem in the above-mentioned background technology that the electrical fire protector cannot be quickly disconnected and cannot effectively dissipate heat inside.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A fast-disconnecting electrical fire protection device comprises a protection device shell, a communication terminal is arranged on the right side of a front ejection cover plate of the protection device shell, an indicator light is arranged on the left side of the front ejection cover plate of the protection device shell, and a reset button is arranged on the lower front side of the front ejection cover plate of the protection device shell, an inlet bushing is arranged on the lower left side of the protection device shell, and an inlet connecting rod is connected and installed on the right side of the inlet bushing, a compression spring is installed inside the right end of the inlet connecting rod, and a first connecting shaft is connected and installed on the outer side of the compression spring, an outlet bushing is arranged on the lower right side of the protection device shell, and an outlet connecting rod is connected and installed on the left side of the outlet bushing, the inlet connecting rod and the outlet connecting rod are both located inside an insulating box, and the insulating box is installed below the inside of the protection device shell, an electrical component is arranged inside the protection device shell, a temperature sensor is installed at the bottom of the electrical component, and an energy storage motor is connected and installed below the temperature sensor, and heat dissipation windows are installed on both left and right sides of the protection device shell, and heat dissipation fans are installed inside the heat dissipation windows.

[0010] Preferably, a rotating shaft is connected to the output end below the energy storage motor, and the rotating shaft passes through the bottom of the top surface of the insulation box and is connected to a semi-toothed wheel disk, and local teeth are provided at the edge of the semi-toothed wheel disk.

[0011] By adopting the above technical solution, when the energy storage motor is started, the semi-toothed wheel disc is driven to rotate through the rotating shaft, and the paddle can be intermittently touched to provide mechanical power for the quick disconnection of the second connecting shaft and the first connecting shaft.

[0012] Preferably, a support plate is horizontally fixedly installed at the bottom of the semi-toothed wheel disc, and a paddle is connected and installed below the outer end of the support plate, and the edge of the paddle pointing to the semi-toothed wheel disc is smooth.

[0013] By adopting the above technical solution, when the half-toothed wheel disc rotates, the paddle connected to the support plate is also driven to rotate, so that when the paddle plate touches the second connecting shaft, its position is changed to separate from the first connecting shaft to achieve quick disconnection.

[0014] Preferably, a half gear is connected to the left end of the outlet connecting rod, and a second connecting shaft is horizontally installed on the left side of the half gear near the edge, and the second connecting shaft is connected to the first connecting shaft in an open line state, the half gear is meshed with the teeth of the half-toothed wheel disk, and the half gear is located on the right side below the half-toothed wheel disk.

[0015] By adopting the above technical solution, when the paddle rotates and touches the second connecting shaft, the half gear is also driven to rotate, so that the second connecting shaft and the first connecting shaft are quickly disconnected. When the half-toothed wheel continues to rotate and touches the tooth position of the half gear, the second connecting shaft connected to the half gear can be driven to reset and reconnect with the first connecting shaft.

[0016] Preferably, a rotating shaft is connected to the output end below the energy storage motor, and a transmission wheel is connected to the bottom end of the rotating shaft, and when the second connecting shaft is in a connected state with the first connecting shaft, the bottom inclined surface of the transmission wheel is recessed on the left side.

[0017] By adopting the above technical solution, when the energy storage motor is started, the transmission wheel is driven to rotate through the rotating shaft. When the left inclined surface of the transmission wheel is sunken and rotates to the right side, mechanical power is provided for the second connecting shaft to disconnect from the first connecting shaft.

[0018] Preferably, a fixed sleeve is connected and installed on the left end of the outlet connecting rod, and a top rod is vertically installed inside the fixed sleeve, a second connecting shaft is fixedly installed on the bottom of the top rod, and a support spring is installed on the outside of the top rod, the upper end of the support spring is connected to the top surface inside the fixed sleeve, and the lower end of the support spring is connected to the upper surface of the second connecting shaft.

[0019] By adopting the above technical solution, when the inclined surface depression on the left side of the transmission wheel rotates to the right side, the push rod is pushed upward by the support spring, driving the second connecting shaft to move upward and quickly disconnect from the first connecting shaft; when the inclined surface depression on the transmission wheel rotates away from the push rod, the second connecting shaft is reset.

[0020] Preferably, a rotating shaft is connected to the output end below the energy storage motor, and a transmission wheel is connected to the bottom end of the rotating shaft, and when the second connecting shaft is in a connected state with the first connecting shaft, the bottom inclined surface of the transmission wheel is recessed on the right side.

[0021] By adopting the above technical solution, when the energy storage motor is started, the transmission wheel is driven to rotate through the rotating shaft. When the right inclined surface of the transmission wheel is sunken and rotates to the left side, mechanical power is provided for the second connecting shaft to disconnect from the first connecting shaft.

[0022] Preferably, a fixed sleeve is connected to the left end of the outlet connecting rod, and a top rod is vertically installed inside the fixed sleeve, and a second connecting shaft is fixedly installed at the bottom of the top rod, a support spring is installed at the bottom of the second connecting shaft, and the bottom of the support spring is connected to the bottom surface of the fixed sleeve.

[0023] By adopting the above technical solution, when the inclined surface depression on the right side of the transmission wheel rotates to the left side, the push rod drives the second connecting shaft to extrude downward, so that the supporting spring is compressed. At this time, the second connecting shaft is quickly disconnected from the first connecting shaft. When the inclined surface depression on the transmission wheel rotates back to above the push rod, the second connecting shaft can be reset.

[0024] Preferably, transmission belts are horizontally connected and installed on both left and right sides of the rotating shaft, and worms are connected and installed on the outer sides of the transmission belts, and the upper ends of the worms are rotatably connected to the top surface inside the protector housing.

[0025] By adopting the above technical solution, when the energy storage motor rotates to drive the rotating shaft to rotate, the left and right worm gears are driven to rotate through the action of the transmission belt, thereby providing mechanical power for the rotation of the cooling fan.

[0026] Preferably, a worm wheel is connected to and installed on the rear side of the worm, and the worm wheel is connected to and installed with a heat dissipation fan via a rotating rod to form a heat dissipation structure.

[0027] By adopting the above technical solution, when the worm rotates, it drives the worm wheel to rotate, and then the worm wheel drives the cooling fan to rotate through the rotating rod, thereby dissipating the heat inside the protector housing and preventing the protector housing from overheating after resetting and starting, affecting the next use.

[0028] Compared with the prior art, the invention has the following beneficial effects: the fast-breaking electrical fire protection device,

[0029] 1. A structure for quickly disconnecting the second connecting shaft and the first connecting shaft is provided. The energy storage motor is started according to the line fault and the temperature sensor, and the transmission wheel is driven to rotate through the rotating shaft. The left end of the outlet connecting rod is connected with a fixed sleeve, and a push rod is vertically installed inside the fixed sleeve, and the second connecting shaft is fixedly installed at the bottom of the push rod. A support spring is installed at the bottom of the second connecting shaft, and the bottom of the support spring is connected to the bottom surface of the fixed sleeve. The push rod drives the second connecting shaft to extrude downward, so that the support spring is compressed. At this time, the second connecting shaft is quickly disconnected from the first connecting shaft, and the current is cut off to protect the circuit. When the inclined surface of the transmission wheel is sunken back to the top of the push rod, the second connecting shaft can be reset;

[0030] 2. A heat dissipation structure is provided. When the energy storage motor rotates and drives the rotating shaft to rotate, the left and right worms are driven to rotate through the action of the transmission belt. A worm wheel is connected to the rear side of the worm, and the worm wheel is connected to a heat dissipation fan through a rotating rod to form a heat dissipation structure. When the worm rotates, it drives the worm wheel to rotate, and then the worm wheel drives the heat dissipation fan to rotate through the rotating rod to dissipate the heat inside the protector housing, so as to prevent the protector housing from being overheated after resetting and starting, affecting the next use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the appearance structure of the present invention;

[0032] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention;

[0033] Figure 3 For the present invention Figure 2The enlarged structural diagram at A in the middle;

[0034] Figure 4 This is a schematic diagram of the connection structure between the half-toothed wheel disc and the half-gear of the present invention;

[0035] Figure 5 This is a front cross-sectional structural schematic diagram of Embodiment 2 of the present invention;

[0036] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0037] Figure 7 For the present invention Figure 5 Schematic diagram of the structure of embodiment 3 at position B in the middle.

[0038] In the figure: 1. Protector housing; 2. Communication terminal; 3. Indicator light; 4. Reset button; 5. Inlet bushing; 501. Inlet connecting rod; 6. Outlet bushing; 601. Outlet connecting rod; 7. Heat dissipation window; 8. Electrical component; 9. Temperature sensor; 10. Insulation box; 11. Energy storage motor; 12. Rotating shaft; 13. Half-toothed wheel; 14. Support plate; 15. Paddle plate; 16. Half gear; 17. Second connecting shaft; 18. First connecting shaft; 19. Compression spring; 20. Transmission wheel; 21. Fixed bushing; 22. Push rod; 23. Support spring; 24. Transmission belt; 25. Worm; 26. Worm wheel; 27. Cooling fan. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Embodiment 1

[0041] See also Figure 1-4 , the present invention provides a technical solution:

[0042] A fast-disconnecting electrical fire protection device comprises a protection device housing 1, a communication terminal 2 is arranged on the right side of a front ejection cover plate of the protection device housing 1, an indicator light 3 is arranged on the left side of the front ejection cover plate of the protection device housing 1, and a reset button 4 is arranged on the lower front side of the front ejection cover plate of the protection device housing 1, an inlet sleeve 5 is arranged on the lower left side of the protection device housing 1, and an inlet connecting rod 501 is connected and installed on the right side of the inlet sleeve 5, a compression spring 19 is installed inside the right end of the inlet connecting rod 501, and a first connecting shaft 18 is connected and installed on the outer side of the compression spring 19, and the protection device housing 1 is provided with a plurality of communication terminals 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 59, 60, 61, 62, 64, 65, 66, 67, 68, 69, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, An outlet bushing 6 is provided at the lower right side of the protector housing 1, and an outlet connecting rod 601 is connected and installed on the left side of the outlet bushing 6, the incoming connecting rod 501 and the outgoing connecting rod 601 are both located inside the insulating box 10, and the insulating box 10 is installed at the lower inside of the protector housing 1, an electrical component 8 is provided inside the protector housing 1, and a temperature sensor 9 is installed at the bottom of the electrical component 8, and an energy storage motor 11 is connected and installed below the temperature sensor 9, heat dissipation windows 7 are installed on the left and right sides of the protector housing 1, and a heat dissipation fan 27 is installed inside the heat dissipation window 7.

[0043] A rotating shaft 12 is connected to the output end below the energy storage motor 11, and the rotating shaft 12 passes through the bottom of the top surface of the insulating box 10 and is connected to a semi-toothed wheel disc 13, and a partial tooth pattern is provided at the edge of the semi-toothed wheel disc 13. A support plate 14 is fixedly installed horizontally at the bottom of the semi-toothed wheel disc 13, and a paddle 15 is connected to the lower side of the support plate 14 near the outer end, and the paddle 15 is smooth at the edge of the semi-toothed wheel disc 13. A semi-gear 16 is connected to the left end of the outlet connecting rod 601, and a second connecting shaft 17 is horizontally installed at the edge of the left side of the semi-gear 16, and the second connecting shaft 17 is connected to the first connecting shaft 18 in the line opening state, and the semi-gear 16 is meshed with the teeth of the semi-toothed wheel disc 13, and the semi-gear 16 is located at the right position below the semi-toothed wheel disc 13. When the energy storage motor 11 is started, the semi-toothed wheel disc 13 is driven to rotate through the rotating shaft 12, and can intermittently touch the dial plate 15 to provide mechanical power for the quick disconnection of the second connecting shaft 17 and the first connecting shaft 18. When the semi-toothed wheel disc 13 rotates, it also drives the dial plate 15 connected to the support plate 14 to rotate, so that when the dial plate 15 touches the second connecting shaft 17, its position changes and it is separated from the first connecting shaft 18 to achieve quick disconnection. When the dial plate 15 rotates and touches the second connecting shaft 17, it also drives the half gear 16 to rotate, so that the second connecting shaft 17 and the first connecting shaft 18 are quickly disconnected. When the semi-toothed wheel disc 13 continues to rotate and touches the tooth position of the half gear 16, it can drive the second connecting shaft 17 connected to the half gear 16 to reset and reconnect with the first connecting shaft 18.

[0044] The left and right sides of the rotating shaft 12 are horizontally connected and installed with a transmission belt 24, and the outer side of the transmission belt 24 is connected and installed with a worm 25, and the upper end of the worm 25 is rotatably connected to the top surface inside the protector housing 1. The rear side of the worm 25 is connected and installed with a worm wheel 26, and the worm wheel 26 is connected and installed with a cooling fan 27 through a rotating rod to form a heat dissipation structure. When the energy storage motor 11 rotates to drive the rotating shaft 12 to rotate, the transmission belt 24 drives the left and right worms 25 to rotate, providing mechanical power for the rotation of the cooling fan 27. When the worm 25 rotates, it drives the worm wheel 26 to rotate, and then the worm wheel 26 drives the cooling fan 27 to rotate through the rotating rod, dissipating the heat inside the protector housing 1, and preventing the protector housing 1 from overheating after resetting and starting, affecting the next use.

[0045] Embodiment 2

[0046] See also Figure 5-6 , the present invention provides a technical solution:

[0047] The output end below the energy storage motor 11 is connected to a rotating shaft 12, and the bottom end of the rotating shaft 12 is connected to a transmission wheel 20, and when the second connecting shaft 17 is in a connected state with the first connecting shaft 18, the bottom inclined surface of the transmission wheel 20 is recessed on the left side. The left end of the outlet connecting rod 601 is connected to a fixed sleeve 21, and a top rod 22 is vertically installed inside the fixed sleeve 21, and the second connecting shaft 17 is fixedly installed at the bottom of the top rod 22, and a support spring 23 is installed outside the top rod 22, the upper end of the support spring 23 is connected to the top surface inside the fixed sleeve 21, and the lower end of the support spring 23 is connected to the upper surface of the second connecting shaft 17. When the energy storage motor 11 is started, the transmission wheel 20 is driven to rotate through the rotating shaft 12. When the inclined surface recess on the left side of the transmission wheel 20 rotates to the right, mechanical power is provided for the second connecting shaft 17 to disconnect from the first connecting shaft 18. When the inclined depression on the left side of the transmission wheel 20 rotates to the right side, the push rod 22 is pushed upward by the support spring 23, driving the second connecting shaft 17 to move upward and quickly disconnect from the first connecting shaft 18; when the inclined depression on the transmission wheel 20 rotates away from the push rod 22, the second connecting shaft 17 is reset.

[0048] Embodiment 3

[0049] See also Figure 7 , the present invention provides a technical solution:

[0050] The output end below the energy storage motor 11 is connected to a rotating shaft 12, and the bottom end of the rotating shaft 12 is connected to a transmission wheel 20, and when the second connecting shaft 17 is in a connected state with the first connecting shaft 18, the bottom inclined surface of the transmission wheel 20 is recessed on the right side. The left end of the outlet connecting rod 601 is connected to a fixed sleeve 21, and a top rod 22 is vertically installed inside the fixed sleeve 21, and the bottom of the top rod 22 is fixedly installed with the second connecting shaft 17, and a support spring 23 is installed at the bottom of the second connecting shaft 17, and the bottom of the support spring 23 is connected to the bottom surface of the fixed sleeve 21. When the energy storage motor 11 is started, the transmission wheel 20 is driven to rotate through the rotating shaft 12. When the inclined surface recess on the right side of the transmission wheel 20 rotates to the left, mechanical power is provided for the second connecting shaft 17 to disconnect from the first connecting shaft 18. When the inclined depression on the right side of the transmission wheel 20 rotates to the left side, the push rod 22 drives the second connecting shaft 17 to be squeezed downward, so that the supporting spring 23 is compressed. At this time, the second connecting shaft 17 is quickly disconnected from the first connecting shaft 18. When the inclined depression on the transmission wheel 20 rotates back to above the push rod 22, the second connecting shaft 17 can be reset.

[0051] Working principle:

[0052] When the present invention is in use, when a circuit fault occurs and when the temperature sensor 9 exceeds a preset temperature, the energy storage motor 11 is started, and the semi-toothed wheel disc 13 is driven to rotate through the rotating shaft 12, and the dial plate 15 can be touched intermittently. When the semi-toothed wheel disc 13 rotates, the dial plate 15 connected to the support plate 14 is driven to rotate at the same time, and when the second connecting shaft 17 is touched, the semi-gear 16 is driven to rotate at the same time, so that the second connecting shaft 17 and the first connecting shaft 18 are quickly disconnected. When the semi-toothed wheel disc 13 continues to rotate and touches the tooth position of the semi-gear 16, the second connecting shaft 17 connected to the semi-gear 16 can be driven to reset and reconnect with the first connecting shaft 18; at the same time, when the rotating shaft 12 rotates, the left and right worms 25 are driven to rotate through the action of the transmission belt 24, and when the worm 25 rotates, the worm wheel 26 is driven to rotate, and then the worm wheel 26 drives the cooling fan 27 to rotate through the rotating rod, so as to dissipate heat inside the protector housing 1, and prevent the protector housing 1 from being overheated after resetting and starting, affecting the next use.

[0053] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fast-breaking electrical fire protection device, comprising a protection device housing (1), characterized in that: A communication terminal (2) is arranged on the right side of the front ejection cover of the protector housing (1), an indicator light (3) is arranged on the left side of the front ejection cover of the protector housing (1), and a reset button (4) is arranged at the lower front side of the front ejection cover of the protector housing (1), an inlet bushing (5) is arranged at the lower left side of the protector housing (1), and an inlet connecting rod (501) is connected to the right side of the inlet bushing (5), a compression spring (19) is installed inside the right end of the inlet connecting rod (501), and the outer side of the compression spring (19) is connected to the installation A first connecting shaft (18) is installed, an outlet bushing (6) is arranged at the lower right side of the protector housing (1), and an outlet connecting rod (601) is connected and installed at the left side of the outlet bushing (6), the incoming connecting rod (501) and the outgoing connecting rod (601) are both located inside the insulating box (10), and the insulating box (10) is installed at the lower inside of the protector housing (1), an electrical component (8) is arranged inside the protector housing (1), and a temperature sensor (9) is installed at the bottom of the electrical component (8), and a temperature sensor (9) is installed below the temperature sensor (9). An energy storage motor (11) is connected and installed, and heat dissipation windows (7) are installed on both left and right sides of the protector housing (1), and heat dissipation fans (27) are installed inside the heat dissipation windows (7). A rotating shaft (12) is connected and installed at the output end below the energy storage motor (11), and the rotating shaft (12) passes through the bottom of the top surface of the insulation box (10) and is connected and installed with a semi-toothed wheel disc (13), and the edge of the semi-toothed wheel disc (13) is provided with partial teeth, and a support plate (14) is fixedly installed horizontally at the bottom of the semi-toothed wheel disc (13), and the support plate (14) is close to the insulation box (10). A shift plate (15) is connected and installed below the outer end, and the shift plate (15) is smooth at the edge of the semi-toothed wheel disc (13). A half gear (16) is connected and installed at the left end of the outlet connecting rod (601), and a second connecting shaft (17) is horizontally installed at the left side of the semi-toothed wheel disc (16) near the edge, and the second connecting shaft (17) is connected to the first connecting shaft (18) in a line-opening state, and the half gear (16) is meshed with the teeth of the semi-toothed wheel disc (13), and the half gear (16) is located at the right position below the semi-toothed wheel disc (13).

2. A fast-breaking electrical fire protection device according to claim 1, characterized in that: A transmission wheel (20) is connected and installed at the bottom end of the rotating shaft (12), and when the second connecting shaft (17) and the first connecting shaft (18) are in a connected state, the bottom inclined surface of the transmission wheel (20) is recessed and located on the left side.

3. A fast-breaking electrical fire protection device according to claim 2, characterized in that: The left end of the outlet connecting rod (601) is connected to a fixed sleeve (21), and a top rod (22) is vertically installed inside the fixed sleeve (21). A second connecting shaft (17) is fixedly installed at the bottom of the top rod (22), and a support spring (23) is installed outside the top rod (22). The upper end of the support spring (23) is connected to the top surface inside the fixed sleeve (21), and the lower end of the support spring (23) is connected to the upper surface of the second connecting shaft (17).

4. A fast-breaking electrical fire protection device according to claim 1, characterized in that: A transmission wheel (20) is connected and installed at the bottom end of the rotating shaft (12), and when the second connecting shaft (17) and the first connecting shaft (18) are in a connected state, the bottom inclined surface of the transmission wheel (20) is recessed and located on the right side.

5. A fast-breaking electrical fire protection device according to claim 3, characterized in that: The left end of the outlet connecting rod (601) is connected to a fixed sleeve (21), a top rod (22) is vertically installed inside the fixed sleeve (21), a second connecting shaft (17) is fixedly installed at the bottom of the top rod (22), a support spring (23) is installed at the bottom of the second connecting shaft (17), and the bottom of the support spring (23) is connected to the bottom surface of the fixed sleeve (21).

6. A fast-breaking electrical fire protection device according to claim 1, characterized in that: The left and right sides of the rotating shaft (12) are both horizontally connected with a transmission belt (24), and the outer side of the transmission belt (24) is connected with a worm (25), and the upper end of the worm (25) is rotatably connected to the inner top surface of the protector housing (1).

7. A fast-breaking electrical fire protection device according to claim 6, characterized in that: The rear side of the worm (25) is connected to a worm wheel (26), and the worm wheel (26) is connected to a cooling fan (27) via a rotating rod to form a heat dissipation structure.

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