An intelligent emergency protection device for power distribution cabinet

Abstract

The present invention relates to the field of protection switches, and in particular to an intelligent emergency protection device for a power distribution cabinet, comprising a switch box, wherein an arc extinguishing chamber is separated by a partition in the switch box, an insulating box is arranged in the arc extinguishing chamber, a grid structure is arranged in the insulating box, the grid structure is composed of a fixed lower grid and a movable upper grid, the upper grid is mounted on a movable mounting plate, the movable mounting plate is restricted by a guide groove with an inclined groove, a movable elastic reset structure is arranged on the movable mounting plate, a movable bracket is installed on the partition for lifting and lowering, the movable bracket is located below an iron pressure piece in the switch box, a voltage-breaking piece is arranged on the movable bracket, a heat absorbing box is arranged on the insulating box, heat absorbing liquid is arranged in the heat absorbing box, a movable bottom support with a piston is arranged at the bottom of the heat absorbing box, and a shunt pipe is arranged at the top of the heat absorbing box; the emergency protection device of the present invention is provided with an intelligent arc extinguishing chamber structure, which can temporarily improve the arc extinguishing efficiency when a short circuit occurs and a power failure occurs.

Description

Technical Field

[0001] The invention relates to the technical field of protective switches, in particular to an intelligent emergency protection device for a power distribution cabinet. Background Art

[0002] The power distribution cabinet is a very important device in the power system, which is used to distribute, control and protect electric energy. In the power distribution process, various factors may cause circuit short circuit, overload and other faults. Once these faults occur, they may cause serious safety problems and even cause fire or other accidents. In order to improve the safety performance of the power distribution cabinet, the power distribution cabinet is usually equipped with an air switch as an emergency protection device. The air switch is a device used to quickly cut off the power supply when a circuit fails, thereby protecting the circuit. In the case of overload, short circuit and other conditions, the air switch can detect and cut off the current in time, reduce the harm caused by the accident, and ensure the safety of personnel and equipment. Compared with traditional fuses, air switches have higher reliability and sensitivity, can cut off the current more quickly, and effectively avoid accidents.

[0003] An arc extinguishing chamber is usually provided in the air switch, which can absorb the arc generated at the moment of circuit cutting to prevent the arc from causing harm. At present, the arc extinguishing device generally adopts a horizontal metal grid structure. Experiments have shown that it is beneficial to make the gap between the arc extinguishing grids as narrow as possible. A narrower gap can increase the number of short arcs and make the arc close to the cold iron plate. However, if the gap is too narrow, the arc extinguishing grid will bend due to heat, so that the upper and lower pieces will be welded. Therefore, the current arc extinguishing grids are pre-fixed with a wide gap, and the arc extinguishing effect is limited. In addition, an arc extinguishing plate that is too narrow will also affect its heat dissipation capacity. In actual use, users often directly reclose the air switch without eliminating the fault, causing the arc extinguishing device to work twice in a short period of time, often without enough time to dissipate heat, affecting the service life of the air switch. Summary of the invention

[0004] The purpose of the present invention is to provide an intelligent emergency protection device for a power distribution cabinet to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an intelligent emergency protection device for a power distribution cabinet, comprising a switch box, wherein an arc extinguishing chamber is separated by a partition in the switch box, and an insulating box is movably arranged in the arc extinguishing chamber, wherein a separate grid structure and an arc striking plate are arranged in the insulating box, wherein the grid structure is composed of a fixed lower grid and a movable upper grid, wherein the upper grid is mounted on a movable mounting plate, and the movable mounting plate is restricted by a guide groove having an inclined groove, and when the movable mounting plate is pressed, the upper grid can be displaced and inserted into the gap of the lower grid, and a movable elastic reset structure is arranged on the movable mounting plate, wherein the upper grid is provided with a movable elastic reset structure ... A movable bracket is installed on the partition for lifting and lowering, and a pushing pressure is applied to the movable mounting plate through the movable bracket to make it move along the guide groove. The movable bracket is located below the iron pressure piece in the switch box, and the iron pressure piece can move downward when the emergency protection device detects a short circuit. A voltage-breaking component is arranged on the movable bracket, and the voltage-breaking component is located above the central lever in the switch box. The central lever is used for power-off control of the emergency protection device. A heat-absorbing box is arranged on the insulating box, and heat-absorbing liquid is arranged in the heat-absorbing box. A movable bottom support with a piston is arranged at the bottom of the heat-absorbing box, and the movable bottom support is in contact with the upper grid, and a shunt pipe is arranged on the top of the heat-absorbing box.

[0006] Preferably, the partition is vertically installed in the middle of the switch box, and the insulating box is movably installed in a slideway formed by the partition and the inner wall of the switch box, and the lower grid and the upper grid have two states: upper and lower docking and staggered separation.

[0007] Preferably, the lower grid is installed through a fixed mounting plate, and the guide groove is arranged on the surface of the fixed mounting plate, the movable mounting plate is provided with a support rod, and a limit slider is installed on the support rod, and the limit slider is connected to the guide groove.

[0008] Preferably, the elastic reset structure comprises a reset spring mounted on the side of the movable mounting plate, and a sliding ball is provided at the end of the reset spring, a baffle is provided on the insulating box, and the sliding ball is in contact with the baffle.

[0009] Preferably, an inclined end block is provided at the end of the movable mounting plate, and the inclined end block is arranged through the partition, a spring guide rod is fixedly installed on the partition, and the movable bracket is installed on the spring guide rod, a push rod is provided at the top of the movable bracket, and the push rod is in contact and connected with the inclined surface of the inclined end block.

[0010] Preferably, the iron pressure piece is mounted on a mounting base of the switch box, the movable bracket adopts an L-shaped structure, and the voltage-breaking piece is mounted on the bottom of the movable bracket.

[0011] Preferably, the heat absorption box is installed on the top of the insulation box, and the piston on the movable bottom support is connected to the inner wall of the heat absorption box, and the movable bottom support is a copper bottom support, and the movable bottom support is located above the upper grid.

[0012] Preferably, the shunt tube is communicated with the heat absorption box, and the shunt tubes are arranged in an array, and the top end of the shunt tube is arranged through the switch box, and a heat sink is arranged at the top end of the shunt tube.

[0013] Preferably, an adjusting block is provided on the side of the insulating box, and the adjusting block is connected to a slide groove on the side wall of the switch box, and a limiting plate is provided on the switch box to limit the adjusting block.

[0014] Preferably, the surface of the limit plate is provided with slots arranged equidistantly, and a movable plate is mounted on the adjustment block via a sliding sleeve, a clamping rod is provided on the movable plate and connected to the slots, and a limit spring is connected to the movable plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The emergency protection device of the present invention is an air switch, which is provided with an intelligent arc extinguishing chamber structure, which can temporarily improve the arc extinguishing efficiency when a short circuit occurs and timely dissipate the heat of the grid after the arc is extinguished, effectively improving the service life of the metal grid.

[0017] 2. In the present invention, an arc extinguishing chamber is formed in the switch box by means of a partition, and an insulating box for installing arc extinguishing grids is arranged in the arc extinguishing chamber, wherein the grids are of a separate structure, consisting of a fixed lower grid and an upper grid, the lower grid is of a fork-shaped structure, and can better introduce the arc into the insulating box in conjunction with an arc-starting plate, while the upper grid is of a movable structure, and is normally docked on top of the lower grid, and when the switch is powered off, the upper grid can be separated from the lower grid and briefly enter the gap of the lower grid, forming a narrower gap for arc extinguishing, achieving a better arc extinguishing effect, and being able to cope with high voltage conditions.

[0018] 3. The present invention arranges a heat absorbing box filled with heat absorbing liquid on the top of the insulating box, and the bottom of the heat absorbing box is supported by a movable bottom support. When the upper grid is separated from the insulating box, the movable bottom support can move downward, and when the upper grid is reset and moved upward, it can lift the movable bottom support again. The movement of the movable bottom support can make the heat absorbing liquid move and enter the shunt pipe. At this time, the heat on the lower grid and the upper grid can be transferred from the movable bottom support to the heat absorbing liquid, and the heat can be quickly dissipated to cope with another arc extinguishing operation that may occur, and the heat in the heat absorbing liquid can be dissipated from multiple shunt pipes to the outside of the switch box.

[0019] 4. The insulating box of the present invention is set as an adjustable structure. When installing the internal structure of the switch, the insulating box can be driven to move by the adjustment block, so that the grid and the contact system have a relatively shortest distance under safe conditions, so that the arc extinguishing effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is an external schematic diagram of the structure of the present invention.

[0021] Figure 2 It is a first schematic diagram of the internal structure of the present invention.

[0022] Figure 3 This is a second schematic diagram of the internal structure of the present invention.

[0023] Figure 4 It is a first schematic diagram of the arc extinguishing chamber structure of the present invention.

[0024] Figure 5 It is a second schematic diagram of the arc extinguishing chamber structure of the present invention.

[0025] Figure 6 It is a schematic diagram of the insulating box structure of the present invention.

[0026] Figure 7 Schematic diagram of the separated grid structure of the present invention.

[0027] Figure 8 Schematic diagram of the lower grid structure of the present invention.

[0028] Fig. 9 Schematic diagram of the upper grid structure of the present invention.

[0029] Fig.10 It is a schematic diagram of the iron pressing structure of the present invention.

[0030] Fig.11 It is a schematic diagram of the adjustment block structure of the present invention.

[0031] Fig.12 It is a schematic diagram of the heat absorption box structure of the present invention.

[0032] In the figure: 1. switch box; 2. partition; 3. insulation box; 4. fixed mounting plate; 5. lower grid; 6. movable mounting plate; 7. upper grid; 8. guide groove; 9. support rod; 10. limit slider; 11. reset spring; 12. sliding ball; 13. baffle; 14. arc-starting plate; 15. oblique end block; 16. spring guide rod; 17. movable bracket; 18. push rod; 19. mounting seat; 20. iron pressure piece; 21. voltage-breaking piece; 22. heat absorption box; 23. movable bottom support; 24. shunt pipe; 25. adjustment block; 26. limit plate; 27. slot; 28. sliding sleeve; 29. ​​movable plate; 30. connecting rod; 31. limit spring. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment. It should be noted that 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 making creative work are within the scope of protection of the present invention.

[0034] See also Figures 1 to 12 The present invention provides a technical solution: an intelligent emergency protection device for a power distribution cabinet, comprising a switch box 1, wherein an arc extinguishing chamber is separated by a partition 2 in the switch box 1, and an insulating box 3 is movably arranged in the arc extinguishing chamber, wherein a separate grid structure and an arc-starting plate 14 are arranged in the insulating box 3, wherein the grid structure is composed of a fixed lower grid 5 and a movable upper grid 7, wherein the upper grid 7 is mounted on a movable mounting plate 6, and the movable mounting plate 6 is restricted by a guide groove 8 having an inclined groove, and when the movable mounting plate 6 is pressed, the upper grid 7 can be displaced and inserted into the gap of the lower grid 5, and a movable elastic reset structure is arranged on the movable mounting plate 6, and a movable bracket 17 is installed on the partition 2 for lifting. , a pushing pressure is applied to the movable mounting plate 6 through the movable bracket 17 to make it move along the guide groove 8, the movable bracket 17 is located below the iron pressure piece 20 in the switch box 1, and the iron pressure piece 20 can move downward when the emergency protection device detects a short circuit, and a voltage-breaking component 21 is arranged on the movable bracket 17, and the voltage-breaking component 21 is located above the central lever in the switch box 1, and the central lever is used for power-off control of the emergency protection device, a heat absorption box 22 is arranged on the insulating box 3, and a heat absorption liquid is arranged in the heat absorption box 22, and a movable bottom support 23 with a piston is arranged at the bottom of the heat absorption box 22, and the movable bottom support 23 is in contact with the upper grid 7, and a shunt pipe 24 is arranged on the top of the heat absorption box 22.

[0035] The emergency protection device of the present invention mainly refers to an air switch, which is provided with an intelligent arc extinguishing chamber structure, which can temporarily improve the arc extinguishing efficiency when a short circuit occurs and dissipate the heat of the grid in time after the arc is extinguished, effectively improving the service life of the metal grid.

[0036] like Figure 1-Figure 3 As shown, the partition 2 is vertically installed in the middle of the switch box 1, and the insulating box 3 is movably installed in the slideway formed by the partition 2 and the inner wall of the switch box 1, and the lower grid plate 5 and the upper grid plate 7 have two states: upper and lower docking and offset separation.

[0037] In the air switch of the present invention, an arc extinguishing chamber is formed in the switch box 1 by relying on the partition 2, and an insulating box 3 for installing arc extinguishing grids is arranged in the arc extinguishing chamber, and the grids therein are of a separate structure, consisting of a fixed lower grid 5 and an upper grid 7. The lower grid 5 is a fork-shaped structure, which can better introduce the arc into the insulating box 3 in conjunction with the arc-starting plate 14, and the upper grid 7 is a movable structure, which is normally docked on top of the lower grid 5. When the switch is powered off, the upper grid 7 can be separated from the lower grid 5 and briefly enter the gap of the lower grid 5, forming a narrower gap for arc extinguishing, achieving a better arc extinguishing effect, and being able to cope with high voltage conditions.

[0038] like Figure 4-Figure 8 As shown, the lower grid plate 5 is installed through the fixed mounting plate 4, and the guide groove 8 is arranged on the surface of the fixed mounting plate 4, the movable mounting plate 6 is provided with a support rod 9, and a limit slider 10 is installed on the support rod 9, and the limit slider 10 is connected to the guide groove 8.

[0039] The lower grid plate 5 is fixedly installed using the fixed mounting plate 4, while the upper grid plate 7 is movably installed using the movable mounting plate 6. The guide groove 8 is composed of a flat groove and an inclined groove. When the side of the movable mounting plate 6 is pressed, the support rod 9 and the limit slider 10 are restricted by the guide groove 8, so that the upper grid plate 7 first moves horizontally and then moves downward obliquely to enter the gap of the lower grid plate 5, forming a smaller arc extinguishing gap at the upper part of the insulating box 3.

[0040] like Fig. 9 As shown, the elastic reset structure includes a reset spring 11 installed on the side of the movable mounting plate 6, and a sliding ball 12 is arranged at the end of the reset spring 11, a baffle 13 is arranged on the insulating box 3, and the sliding ball 12 is in contact with the baffle 13.

[0041] After the short arc extinguishing work is completed, the upper grid plate 7 can be reset by the elastic reset structure to enter the heat dissipation state, and the reset spring 11 is squeezed by the baffle 13 to push the movable mounting plate 6 back.

[0042] like Fig. 9 , Fig.10 As shown, an oblique end block 15 is provided at the end of the movable mounting plate 6, and the oblique end block 15 is provided through the partition 2, a spring guide rod 16 is fixedly installed on the partition 2, and a movable bracket 17 is installed on the spring guide rod 16, a push rod 18 is provided at the top of the movable bracket 17, and the push rod 18 is in contact with the inclined surface of the oblique end block 15. The iron pressure piece 20 is installed on the mounting seat 19 of the switch box 1, and the movable bracket 17 adopts an L-shaped structure, and the voltage-breaking component 21 is installed at the bottom of the movable bracket 17.

[0043] The movable mounting plate 6 is driven by the pressure of the inclined end block 15, so that the movable mounting plate 6 moves as the power-off process occurs. When the air switch detects a short circuit, the current in its internal circuit will increase sharply, so that the electromagnetic coil arranged therein generates a magnetic force exceeding the threshold value, so that the iron pressure piece 20 moves downward. At this time, the iron pressure piece 20 drives the movable bracket 17 to move up and down on the spring guide rod 16. The pushing rod 18 on the movable bracket 17 can contact the inclined end block 15 to push the movable mounting plate 6, and the voltage-breaking component 21 on the movable bracket 17 can push the center lever to disconnect the contacts in the air switch. The arc is generated at this time and just enters the insulating box 3 to complete the arc extinguishing work of the small gap.

[0044] like Fig.12 As shown, the heat absorbing box 22 is installed on the top of the insulating box 3, and the piston on the movable bottom bracket 23 is connected to the inner wall of the heat absorbing box 22, and the movable bottom bracket 23 is a copper bottom bracket, and the movable bottom bracket 23 is located above the upper grid 7. The shunt pipe 24 is connected to the heat absorbing box 22, and the shunt pipes 24 are arranged, and the top of the shunt pipe 24 is arranged through the switch box 1, and a heat sink is arranged at the top of the shunt pipe 24.

[0045] A heat absorbing box 22 filled with heat absorbing liquid is arranged on the top of the insulating box 3, and the bottom of the heat absorbing box 22 is supported by a movable bottom support 23. When the upper grid sheet 7 is separated from it, the movable bottom support 23 can move downward, and when the upper grid sheet 7 is reset and moved upward, it can lift up the movable bottom support 23 again. The movement of the movable bottom support 23 can make the heat absorbing liquid move and enter the shunt pipe 24. At this time, the heat on the lower grid sheet 5 and the upper grid sheet 7 can be transferred from the movable bottom support 23 to the heat absorbing liquid, and the heat is quickly dissipated to cope with another possible arc extinguishing operation, and the heat in the heat absorbing liquid can be dissipated from multiple shunt pipes 24 to the outside of the switch box 1.

[0046] like Fig.11 As shown, an adjusting block 25 is provided on the side of the insulating box 3, and the adjusting block 25 is connected to the sliding groove of the side wall of the switch box 1, and a limiting plate 26 is provided on the switch box 1 to limit the adjusting block 25. The surface of the limiting plate 26 is provided with slots 27 arranged equidistantly, and a movable plate 29 is installed on the adjusting block 25 through a sliding sleeve 28, and a clamping rod 30 is provided on the movable plate 29 to connect with the slot 27, and a limiting spring 31 is connected to the movable plate 29.

[0047] The height of the grid of the present invention can also be adjusted. Experiments show that shortening the distance between the arc extinguishing grid and the contact system can enhance the arc blowing magnetic field and arc absorbing electromotive force, which can reduce the stagnation time of the arc on the contact on the one hand, and accelerate the movement speed of the arc when entering the arc extinguishing chamber on the other hand. Even if the arc movement time is reduced, shortening the distance from the contact to the arc extinguishing chamber is beneficial to improving the arc extinguishing conditions. However, considering that sufficient distance must be left between the grid and the contact system during actual installation to prevent accidental contact between the grid and the contact, the insulating box 3 is set to an adjustable structure. When installing the internal structure of the switch, the insulating box 3 can be driven to move by the adjusting block 25. The adjusting block 25 is limited by the limit plate 26, and the adjusting block 25 and the insulating box 3 can be fixed after adjustment through the connection between the clamping rod 30 on the movable plate 29 and the clamping groove 27, so that the grid and the contact system have a relatively shortest distance under safe conditions.

[0048] When the present invention is in use: first, an arc extinguishing chamber is formed in the switch box 1 by relying on the partition plate 2 in the air switch, and the insulating box 3 for installing the arc extinguishing grid is arranged in the arc extinguishing chamber, and the grid therein is a separated structure, which is composed of a fixed lower grid 5 and an upper grid 7. The lower grid 5 is a fork-shaped structure, which can better introduce the arc into the insulating box 3 with the arc-starting plate 14, and the upper grid 7 is a movable structure, which is normally docked on the top of the lower grid 5. When the switch is powered off, the upper grid 7 can be separated from the lower grid 5 and temporarily enter the gap of the lower grid 5 to form a narrower gap for arc extinguishing, which has a better arc extinguishing effect and can cope with high voltage conditions. The lower grid 5 is fixedly installed using the fixed mounting plate 4, and the upper grid 7 is movable. The movable mounting plate 6 is movably installed, and the guide groove 8 is composed of a flat groove and an inclined groove. When the side of the movable mounting plate 6 is pressed, the support rod 9 and the limit slider 10 are restricted by the guide groove 8, so that the upper grid plate 7 first moves horizontally and then moves downward obliquely to enter the gap of the lower grid plate 5, forming a smaller arc extinguishing gap at the upper part of the insulating box 3. After the short arc extinguishing work is completed, the upper grid plate 7 can be reset by the elastic reset structure to enter the heat dissipation state. The reset spring 11 is squeezed by the baffle 13 to push the movable mounting plate 6 back. The movable mounting plate 6 is driven by the pressure of the inclined end block 15, so that the movable mounting plate 6 moves as the power-off process occurs. When the air switch detects a short circuit, the current in its internal circuit will increase sharply, so that The electromagnetic coil provided therein generates a magnetic force exceeding the threshold value, so that the iron pressing piece 20 moves downward. At this time, the iron pressing piece 20 drives the movable bracket 17 to move up and down on the spring guide rod 16. The pushing rod 18 on the movable bracket 17 can contact the inclined end block 15 to push the movable mounting plate 6, and the voltage-breaking component 21 on the movable bracket 17 can push the central lever to disconnect the contacts in the air switch. The arc is generated at this time and just enters the insulating box 3 to complete the arc extinguishing work of the small gap. A heat absorbing box 22 filled with heat absorbing liquid is provided on the top of the insulating box 3, and the bottom of the heat absorbing box 22 is supported by a movable bottom support 23. When the upper grid sheet 7 is separated from it, the movable bottom support 23 can move downward, and when the upper grid sheet 7 is reset and moved upward, it can move the movable bottom support 23 is lifted up again, and the movement of the movable base 23 can make the heat-absorbing liquid move and enter into the shunt tube 24. At this time, the heat on the lower grid sheet 5 and the upper grid sheet 7 can be transferred from the movable base 23 to the heat-absorbing liquid, and the heat is quickly dissipated to cope with the possible arc extinguishing work again, and the heat in the heat-absorbing liquid can be dissipated from the multiple shunt tubes 24 to the outside of the switch box 1. The insulating box 3 is set to an adjustable structure. When installing the internal structure of the switch, the insulating box 3 can be driven to move by the adjusting block 25. The adjusting block 25 is limited by the limit plate 26, and through the connection between the clamping rod 30 on the movable plate 29 and the clamping groove 27, the adjusting block 25 and the insulating box 3 can be fixed after adjustment, so that the grid sheet and the contact system have a relatively shortest distance under safe conditions.

[0049] The above-mentioned embodiments are only preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Various changes made by ordinary technicians in this field based on the above-mentioned concepts without creative work all fall within the scope of protection of the present invention.

Claims

1. An intelligent emergency protection device for a power distribution cabinet, comprising a switch box (1), characterized in that: The switch box (1) is separated into an arc extinguishing chamber by a partition (2), and an insulating box (3) is movably arranged in the arc extinguishing chamber. The insulating box (3) is provided with a separate grid structure and an arc striking plate (14). The grid structure is composed of a fixed lower grid (5) and a movable upper grid (7). The upper grid (7) is installed on a movable mounting plate (6). The movable mounting plate (6) is restricted by a guide groove (8) having an inclined groove. When the movable mounting plate (6) is pressed, the upper grid (7) can be displaced and inserted into the gap of the lower grid (5). The movable mounting plate (6) is provided with a movable elastic reset structure. A movable bracket (17) is installed on the partition (2) in a lifting manner. The movable mounting plate (6) is adjusted by the movable bracket (17). ) applies a pushing pressure to make it move along the guide groove (8), the movable bracket (17) is located below the iron pressure piece (20) in the switch box (1), the iron pressure piece (20) can move downward when the emergency protection device detects a short circuit, and a voltage-breaking component (21) is provided on the movable bracket (17), and the voltage-breaking component (21) is located above a central lever in the switch box (1), and the central lever is used for power-off control of the emergency protection device, the insulating box (3) is provided with a heat absorbing box (22), and a heat absorbing liquid is provided in the heat absorbing box (22), and a movable bottom support (23) with a piston is provided at the bottom of the heat absorbing box (22), and the movable bottom support (23) is in contact with the upper grid (7), and a shunt pipe (24) is provided at the top of the heat absorbing box (22); The lower grid plate (5) is installed via a fixed mounting plate (4), and a guide groove (8) is provided on the surface of the fixed mounting plate (4); a support rod (9) is provided on the movable mounting plate (6), and a limit slider (10) is installed on the support rod (9), and the limit slider (10) is connected to the guide groove (8); An oblique end block (15) is provided at the end of the movable mounting plate (6), and the oblique end block (15) is arranged to penetrate the partition (2), a spring guide rod (16) is fixedly mounted on the partition (2), and a movable bracket (17) is mounted on the spring guide rod (16), a push rod (18) is provided at the top end of the movable bracket (17), and the push rod (18) is in contact with and connected to the inclined surface of the oblique end block (15).

2. The intelligent emergency protection device for a power distribution cabinet according to claim 1 is characterized in that: The partition (2) is vertically mounted in the middle of the switch box (1), and the insulating box (3) is movably mounted in a slideway formed by the partition (2) and the inner wall of the switch box (1), and the lower grid plate (5) and the upper grid plate (7) have two states: upper and lower docking and staggered separation.

3. The intelligent emergency protection device for a power distribution cabinet according to claim 1 is characterized in that: The elastic reset structure comprises a reset spring (11) mounted on the side of the movable mounting plate (6), and a sliding ball (12) is arranged at the end of the reset spring (11), a baffle (13) is arranged on the insulating box (3), and the sliding ball (12) is in contact with the baffle (13).

4. The intelligent emergency protection device for a power distribution cabinet according to claim 1, characterized in that: The iron pressing piece (20) is mounted on a mounting seat (19) of the switch box (1), the movable bracket (17) adopts an L-shaped structure, and the voltage-breaking piece (21) is mounted on the bottom of the movable bracket (17).

5. The intelligent emergency protection device for a power distribution cabinet according to claim 1 is characterized in that: The heat absorption box (22) is installed on the top of the insulation box (3), and the piston on the movable bottom bracket (23) is connected to the inner wall of the heat absorption box (22), and the movable bottom bracket (23) is a copper bottom bracket, and the movable bottom bracket (23) is located above the upper grid plate (7).

6. The intelligent emergency protection device for a power distribution cabinet according to claim 1, characterized in that: The shunt pipe (24) is in communication with the heat absorption box (22), and the shunt pipes (24) are arranged in an array, and the top end of the shunt pipe (24) is arranged to penetrate the switch box (1), and a heat sink is arranged at the top end of the shunt pipe (24).

7. The intelligent emergency protection device for a power distribution cabinet according to claim 1 is characterized in that: An adjusting block (25) is provided on the side of the insulating box (3), and the adjusting block (25) is connected to a sliding groove on the side wall of the switch box (1). A limiting plate (26) is provided on the switch box (1) to limit the adjusting block (25).

8. The intelligent emergency protection device for a power distribution cabinet according to claim 7 is characterized in that: The surface of the limit plate (26) is provided with slots (27) arranged at equal intervals, and a movable plate (29) is mounted on the adjustment block (25) via a sliding sleeve (28), a clamping rod (30) is provided on the movable plate (29) and connected to the slots (27), and a limit spring (31) is connected to the movable plate (29).

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