Safe dismounting electric meter box and electric meter box monitoring method

Abstract

The invention relates to the technical field of electric meter boxes, and discloses an electric meter box safe to disassemble and assemble and an electric meter box monitoring method.The electric meter box comprises a box body, a plurality of monitoring boxes are fixedly installed in the box body, the front sides of the monitoring boxes are open, a removable installation support is movably arranged in each monitoring box, and each installation support comprises a base and an installation plate; the installation plate is fixedly installed on the upper side of the base, the electric energy meter is embedded in the installation plate, the base is inserted into the monitoring box in a sliding mode, the installation plate covers a front side opening of the monitoring box, and a monitoring module is installed in the monitoring box. The monitoring boxes are arranged in the electric meter box, the mounting supports are movably arranged in the monitoring boxes, the monitoring cavities with the adjustable volumes are formed in the monitoring boxes, the monitoring modules are arranged in the monitoring cavities, the monitoring cavities are small in space and relatively closed, and changes of harmful media contained in air in the monitoring cavities are easy to detect; the monitoring module can sense faults more sensitively and is safer to use.

Description

Technical Field

[0001] The invention relates to the technical field of electric meter boxes, and in particular to a safe disassembly and assembly electric meter box and an electric meter box monitoring method. Background Art

[0002] It is necessary and inevitable to strengthen the online monitoring of smart meters, ensure the safety of electricity use, improve the fault warning capability, eliminate the hidden dangers of electricity safety in time, and strengthen the safety management of meter boxes. For example, in the prior art, the patent document with the announcement number CN110265898B discloses an electric meter box, including a box body; a rotating shaft is rotatably connected between the side walls of the box body; a bottom plate is fixedly connected to the middle of the rotating shaft; a fixing ring is arranged on the right side of the rotating shaft; a first slide groove is arranged on the part of the rotating shaft located in the fixing ring; and a first slide groove is arranged in the first slide groove. A card block is slidably connected, and the card block is fixedly connected to the No. 1 slide groove through a spring; the card block is fixedly connected to the side wall away from the bottom plate on the side; a knob is fixedly connected to the rotating shaft on the side of the fixing ring away from the bottom plate; an opening is provided in the knob, and a pressing block is slidably connected in the opening; uniformly arranged rubber layers are provided on the bottom plate; a loading plate is fixedly connected to each of the rubber layers; the bottom plate and the loading plate are connected by bolts; the invention has a simple structure and can realize the up and down adjustment of the angle of the electric meter, and at the same time, preliminary fire extinguishing and early warning are carried out in case of fire.

[0003] In actual use, in order to meet the needs of online monitoring, various sensors are usually installed in the meter box. When hidden dangers such as overheating, smoke or water immersion occur in the meter box, the corresponding sensors are triggered so that maintenance personnel can find them in time to avoid greater losses. However, the existing meter box has a large space. For example, the temperature caused by the short circuit will not be triggered until it reaches a certain level or the smoke reaches a certain concentration. The fault perception has a long lag. Even the fire has occurred, causing serious losses, before the monitoring system can issue an early warning. This is not conducive to the real-time monitoring of the meter box. Based on this, the existing meter box is not convenient for arranging sensors, and there is a lag in real-time monitoring, which needs to be solved urgently. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the existing electric meter box is not convenient for arranging sensors, resulting in hysteresis in real-time monitoring, and to propose a safe disassembly and assembly electric meter box and an electric meter box monitoring method.

[0005] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a safe disassembly and assembly electric meter box, comprising a box body, a plurality of monitoring boxes are fixedly installed inside the box body, the front side of the monitoring box is open, a removable mounting bracket is movably arranged in each monitoring box, and a clamping assembly is arranged on the inner bottom wall of each monitoring box, and the mounting bracket is constrained in the monitoring box by the clamping assembly; The mounting bracket includes a base and a mounting plate. The mounting plate is fixedly installed on the upper side of the base, and the electricity meter is embedded in the mounting plate. The base is slidably inserted into the monitoring box, and the mounting plate covers the front opening of the monitoring box. A monitoring module is installed in the monitoring box, providing a relatively small and enclosed space for the monitoring module, making the monitoring module more sensitive to detecting the internal environmental parameters of the monitoring box.

[0006] Preferably, the mounting plate is obliquely fixed on the upper side of the base. Baffles are fixedly installed on the left and right sides and the lower side of the mounting plate. The outer wall of the baffle, the upper plane of the mounting plate are in sliding contact with the inner wall of the monitoring box, forming a closed monitoring cavity between the mounting plate, the baffle and the interior of the monitoring box. And the monitoring module is arranged in the monitoring cavity. When the mounting bracket moves to different positions, the space size of the detection cavity can be adjusted.

[0007] Preferably, an air cavity is formed inside the base. A piston-type telescopic rod is slidably installed in the air cavity. A pressing spring is arranged inside the base to press the piston-type telescopic rod outward. Under the action of the pressing spring, the end of the piston-type telescopic rod extends out of the air cavity and presses against the inner wall of the monitoring box. A valve is arranged on the front side of the base. The air cavity communicates with the outside through the valve. By adjusting the opening size of the valve and changing the air intake and exhaust speed of the valve, the telescopic speed of the piston-type telescopic rod can be adjusted.

[0008] Preferably, the clamping component includes a housing fixedly installed on the inner bottom wall of the monitoring box. A telescopic pin is slidably installed in the housing. A return spring is arranged inside the housing to press the telescopic pin outward. A serrated groove is formed on the surface of the base. When the base is slidably installed at the end of the monitoring box, it is clamped in the serrated groove.

[0009] A manual switch is slidably installed on the front side of the housing. An electromagnetic telescopic rod is fixedly installed inside the housing. The telescopic end of the electromagnetic telescopic rod is fixedly installed with a cross plate. A connecting rod is rotatably installed at the end of the cross plate. A lever is rotatably installed inside the manual switch. One end of the lever away from the manual switch is rotatably connected to the connecting rod. A waist-shaped groove is formed on the surface of the lever. A connecting column is arranged on the surface of the telescopic pin. The connecting column is inserted into the waist-shaped groove. By operating the manual switch and the electromagnetic telescopic rod, the movement of the telescopic pin can be controlled.

[0010] Preferably, the monitoring module includes a smoke sensor, a temperature sensor, a humidity sensor, and a water immersion sensor. The monitoring module is electrically connected to the electromagnetic telescopic rod. When any one or more of the smoke sensor, temperature sensor, humidity sensor, and water immersion sensor are triggered, the electromagnetic telescopic rod is started to complete one telescopic action of the electromagnetic telescopic rod, so as to control the distance that the base moves out of the monitoring box according to the number of telescopic actions of the electromagnetic telescopic rod.

[0011] A fire extinguishing gas cylinder is installed in the box, and an electric-controlled nozzle is fixedly installed in the monitoring box. The electric-controlled nozzle is connected to the fire extinguishing gas cylinder through a pipeline, and the monitoring module is electrically connected to the electric-controlled nozzle. When any one or more of the smoke sensor and the temperature sensor is triggered, the electric-controlled nozzle is linked to open. After the electric-controlled nozzle is opened, the fire extinguishing medium is sprayed into the monitoring cavity to extinguish the fire and prevent the spread of the fire.

[0012] The present invention also proposes a monitoring method for a safe disassembly and assembly of an electric meter box, comprising the following steps: S1, initial detection, when the harmful medium in the monitoring box increases, causing any one or more of the smoke sensor, temperature sensor, humidity sensor, and water immersion sensor to be triggered, the electromagnetic telescopic rod is started, and a telescopic action of the electromagnetic telescopic rod is completed. Under the action of the pressure spring, the mounting bracket is driven to move from the inside of the monitoring box to the outside, the inner cavity of the monitoring cavity becomes larger, and the concentration of the harmful medium is reduced; S2, secondary detection, when the hazardous medium continues to increase until the monitoring module is triggered again, S1 is repeated to drive the mounting bracket to move from inside the monitoring box to outside, the inner cavity of the monitoring cavity gradually becomes larger, and the concentration of the hazardous medium in the monitoring cavity is reduced; S3, early warning and fire extinguishing. When S1 and S2, the monitoring signals sent by the monitoring modules trigger the early warning system to start and send out an alarm signal. When S2 is completed, any one or more of the smoke sensor and temperature sensor are triggered, and the electronically controlled sprinkler is turned on at the same time, and the electronically controlled sprinkler injects fire extinguishing medium into the monitoring cavity.

[0013] The hazardous media include the temperature generated by the failure of the electric energy meter and the power supply line, the smoke generated by the temperature increase, the water vapor in the air in the monitoring chamber, and the moisture entering the monitoring chamber from the outside.

[0014] The present invention has the following beneficial effects: 1. The electric meter box proposed in the present invention has multiple monitoring boxes arranged inside it, and a mounting bracket is movably arranged inside the monitoring box, so that a monitoring cavity with adjustable volume is formed in the monitoring box. The monitoring module is arranged in the monitoring cavity. The space of the monitoring cavity is small and relatively closed, and the change of the hazardous medium contained in the air inside it is easy to detect, so that the monitoring module is more sensitive to fault perception, which solves the problem of lag in real-time monitoring of the electric meter box and is safer to use.

[0015] 2. The meter box proposed by the present invention is provided with a removable mounting bracket movably arranged in the monitoring box. The electric energy meter is mounted on the mounting bracket. When a fault occurs in a certain monitoring box, the monitoring module inside it is triggered, and the linkage clamping component acts to release the restraint on the mounting bracket. Under the action of the pressing spring, the mounting bracket is driven to move outwards from the monitoring box, and the electric energy meter together with the mounting bracket extends out from the front side of the monitoring box, so that the maintenance personnel can quickly identify the location of the fault, and only need to cut off the power supply of the electric energy meter at the fault point for maintenance, ensuring the normal operation of other electric energy meters. Moreover, the mounting bracket can be removed from the monitoring box, facilitating the maintenance and replacement of the electric energy meter, thus achieving the effect of safe disassembly and assembly.

[0016] 3. The monitoring method of the meter box proposed by the present invention controls the movement of the mounting bracket through the linkage of the monitoring module, so that the monitoring cavity in the monitoring box can gradually become larger. After the monitoring cavity becomes larger, the concentration of harmful media contained in the air in the monitoring cavity decreases, providing different conditions for the initial detection and secondary detection of the monitoring module. An early warning signal is sent through the initial detection to remind the maintenance personnel. The misoperation of the fire extinguishing system can be avoided through the secondary detection. Moreover, by calculating the time interval between the initial detection and the secondary detection, the severity of the fault occurrence can be judged, so that the maintenance personnel can implement corresponding maintenance measures targeted. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a perspective structure schematic diagram of the front side view of the meter box proposed by the present invention; Figure 2 It is a three-dimensional structure schematic diagram of the monitoring box proposed by the present invention Figure 1 ; Figure 3 It is a three-dimensional structure schematic diagram of the monitoring box proposed by the present invention Figure 2 ; Figure 4 It is a three-dimensional structure schematic diagram of the monitoring box proposed by the present invention Figure 3 ; Figure 5 It is a side sectional structure schematic diagram of the monitoring box proposed by the present invention Figure 1 ; Figure 6 It is a side sectional structure schematic diagram of the monitoring box proposed by the present invention Figure 2 ; Figure 7 It is a partial sectional three-dimensional structure schematic diagram of the monitoring box proposed by the present invention; Figure 8 It is a top sectional structure schematic diagram of the monitoring box proposed by the present invention.

[0018] In the figure: 1. Box body; 2. Monitoring box; 3. Mounting bracket; 4. Base; 5. Mounting plate; 6. Electric energy meter; 7. Monitoring module; 8. Baffle; 9. Piston-type telescopic rod; 10. Compression spring; 11. Housing; 12. Expansion pin; 13. Return spring; 14. Sawtooth groove; 15. Manual switch; 16. Electromagnetic telescopic rod; 17. Cross plate; 18. Connecting rod; 19. Lever member; 20. Connecting column; 21. Fire extinguishing gas cylinder; 22. Electric control sprinkler; 23. Air valve. Specific implementation manner

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0020] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0021] Referring to Figures 1-8 , a meter box with safe disassembly and assembly, including a box body 1, a plurality of monitoring boxes 2 are fixedly installed inside the box body 1, the front side of the monitoring box 2 is open, a detachable mounting bracket 3 is movably arranged in each monitoring box 2, and a clamping component is arranged on the inner bottom wall of each monitoring box 2, and the mounting bracket 3 is constrained in the monitoring box 2 through the clamping component.

[0022] The mounting bracket 3 includes a base 4 and a mounting plate 5. The mounting plate 5 is fixedly installed on the upper side of the base 4. The electric energy meter 6 is embedded and installed on the mounting plate 5. The base 4 is slidably inserted into the monitoring box 2, and the mounting plate 5 covers the front opening of the monitoring box 2. A monitoring module 7 is installed in the monitoring box 2, and the internal environment parameters of the monitoring box 2 are detected through the monitoring module 7. The electric energy meter 6 adopts an intelligent electric energy meter, which has functions such as prepaying electricity bills, automatic meter reading, anti-stealing electricity, and automatically cutting off the power when the electricity in the card is used up. The intelligent electric energy meter is a mature product of the existing technology and does not belong to the scope claimed by the present invention, so it will not be elaborated here.

[0023] Specifically, see Figure 4 , the mounting plate 5 is obliquely fixed on the upper side of the base 4. Baffles 8 are fixedly installed on the left and right sides and the lower side of the mounting plate 5. The outer wall of the baffle 8, the upper plane of the mounting plate 5 are in sliding contact with the inner wall of the monitoring box 2, so that a closed monitoring cavity is formed between the mounting plate 5, the baffle 8 and the inside of the monitoring box 2, and the monitoring module 7 is arranged in the monitoring cavity.

[0024] As Figure 7 shown, an air chamber is provided inside the base 4, and a piston-type telescopic rod 9 is slidably installed in the air chamber. A pressing spring 10 is provided inside the base 4 to press the piston-type telescopic rod 9 outward. Under the action of the pressing spring 10, the end of the piston-type telescopic rod 9 extends out of the air chamber and presses against the inner wall of the monitoring box 2. A valve 23 is provided on the front side of the base 4, and the air chamber is communicated with the outside through the valve 23. When the piston-type telescopic rod 9 expands and contracts in the air chamber, outside air can enter the air chamber through the valve 23, or the air in the air chamber is discharged through the valve 23. By adjusting the opening size of the valve 23 to change the air intake and exhaust speed of the valve 23, the expansion and contraction speed of the piston-type telescopic rod 9 can be adjusted.

[0025] Among them, referring to Figure 7 , the clamping component includes a housing 11 fixedly installed on the inner bottom wall of the monitoring box 2. A telescopic pin 12 is slidably installed in the housing 11. A return spring 13 is provided inside the housing 11 to press the telescopic pin 12 outward. A serrated groove 14 is provided on the surface of the base 4. When the base 4 is slidably installed in the monitoring box 2, the end of the telescopic pin 12 is clamped in the serrated groove 14.

[0026] A manual switch 15 is slidably installed on the front side of the housing 11. An electromagnetic telescopic rod 16 is fixedly installed inside the housing 11. The telescopic end of the electromagnetic telescopic rod 16 is fixedly installed with a cross plate 17. A connecting rod 18 is rotatably installed at the end of the cross plate 17. A lever member 19 is rotatably installed inside the manual switch 15. One end of the lever member 19 away from the manual switch 15 is rotatably connected to the connecting rod 18. An oval slot is provided on the surface of the lever member 19. A connecting column 20 is provided on the surface of the telescopic pin 12, and the connecting column 20 is inserted into the oval slot.

[0027] During use, as Figure 8 shown, when the electromagnetic telescopic rod 16 pushes the cross plate 17 upward, at this time, the lever member 19 swings clockwise, separating the telescopic pin 12 from the serrated groove 14. Under the action of the pressing spring 10, the end of the piston-type telescopic rod 9 extends out, pushing the base 4 out of the monitoring box 2. When the electromagnetic telescopic rod 16 pulls the cross plate 17 downward, at this time, the lever member 19 swings counterclockwise, causing the telescopic pin 12 to be inserted into the serrated groove 14 again, that is, the piston-type telescopic rod 9 expands and contracts once, and the base 4 moves outwards from the monitoring box 2 by a certain distance. This distance is determined by the time interval of the expansion and contraction action of the piston-type telescopic rod 9 and the opening size of the valve 23, and is adjusted according to actual use needs to meet different use requirements, which will not be elaborated here.

[0028] Similarly, as Figure 8As shown, when the manual switch 15 is manually pushed to move, the lever member 19 is driven to swing counterclockwise, at which time the telescopic pin 12 is separated from the serrated groove 14, and the base 4 can be drawn out of the monitoring box 2.

[0029] In this embodiment, the monitoring module 7 includes a smoke sensor, a temperature sensor, a humidity sensor, and a water immersion sensor. The monitoring module 7 is electrically connected to the electromagnetic telescopic rod 16. When any one or more of the smoke sensor, the temperature sensor, the humidity sensor, and the water immersion sensor is triggered, the electromagnetic telescopic rod 16 is started to complete a telescopic action of the electromagnetic telescopic rod 16. Figure 2 and Figure 5 As shown, the mounting bracket 3 is located in the monitoring box 2. At this time, the inner cavity space of the monitoring cavity is relatively small. Figure 3 , Figure 4 and 6 As shown, after the mounting bracket 3 moves a certain distance toward the outside of the monitoring box 2, the inner cavity space of the monitoring cavity gradually becomes larger.

[0030] In this embodiment, a fire extinguishing gas cylinder 21 is provided in the box body 1, and an electric-controlled nozzle 22 is fixedly installed in the monitoring box 2. The electric-controlled nozzle 22 is connected to the fire extinguishing gas cylinder 21 through a pipeline, and the monitoring module 7 is electrically connected to the electric-controlled nozzle 22. When any one or more of the smoke sensor and the temperature sensor are triggered, the electric-controlled nozzle 22 is linked to open. For example, the fire extinguishing gas cylinder 21 adopts a hexafluoropropane gas cylinder. After the electric-controlled nozzle 22 is turned on, hexafluoropropane gas is sprayed into the monitoring cavity. Hexafluoropropane gas is suitable for fire extinguishing in electronic and communication places.

[0031] The electric meter box proposed in the present invention has a removable mounting bracket 3 movably arranged in the monitoring box 2, and the electric energy meter 6 is mounted on the mounting bracket 3. When a fault occurs in a certain monitoring box 2, the monitoring module 7 inside it is triggered, and the linkage clamping assembly is actuated to release the constraint on the mounting bracket 3. Under the action of the pressure spring 10, the mounting bracket 3 is driven to move outward from the monitoring box 2, and the electric energy meter 6 is extended from the front side of the monitoring box 2 together with the mounting bracket 3, so that maintenance personnel can quickly identify the location of the fault. It is only necessary to power off the electric energy meter 6 at the fault point for maintenance, thereby ensuring the normal operation of other electric energy meters 6. In addition, the mounting bracket 3 can be removed from the monitoring box 2, which is convenient for the maintenance and replacement of the electric energy meter 6, thereby achieving the effect of safe disassembly and assembly.

[0032] The present invention also proposes a monitoring method for a safe disassembly and assembly of an electric meter box, comprising the following steps: S1. Initial detection: When the harmful medium in the monitoring box 2 increases and triggers any one or more of the smoke sensor, temperature sensor, humidity sensor, and water immersion sensor, the electromagnetic telescopic rod 16 is activated to complete one telescopic action of the electromagnetic telescopic rod 16. Under the action of the pressing spring 10, the mounting bracket 3 is driven to move outward from the monitoring box 2, the inner cavity of the monitoring chamber becomes larger, and the concentration of the harmful medium decreases. S2. Secondary detection: When the harmful medium continues to increase until the monitoring module 7 is triggered again, repeat the operation in S1, that is, drive the mounting bracket 3 to move outward from the monitoring box 2, the inner cavity of the monitoring chamber gradually becomes larger, and the concentration of the harmful medium in the monitoring chamber decreases. S3. Warning and fire extinguishing: When the monitoring signals sent by the monitoring module 7 in both S1 and S2 trigger the warning system to start, the warning system includes an alarm installed in the duty room, and an alarm signal is sent by turning on the alarm; when S2 is completed, any one or more of the smoke sensor and temperature sensor are triggered, and at the same time, the electric control sprinkler 22 is linked to be turned on, and the electric control sprinkler 22 injects a fire extinguishing medium into the monitoring chamber.

[0033] Among them, the harmful medium includes the temperature generated by the electric energy meter 6 and the power supply line failure, the smoke generated due to the temperature rise, the water vapor in the air in the monitoring chamber, and the moisture entering the monitoring chamber from the outside. It should be noted that when the inner cavity space of the monitoring chamber gradually becomes larger, the concentrations of the above-mentioned smoke and water vapor decrease. When the concentration drops to a certain level, the smoke sensor and humidity sensor will reset to the standby state. When the concentrations of the above-mentioned smoke and water vapor rise rapidly, the smoke sensor and humidity sensor will be triggered again. Similarly, the triggering situations of the temperature sensor and water immersion sensor are not elaborated here.

[0034] The monitoring method of the electric meter box proposed by the present invention controls the movement of the mounting bracket 3 through the linkage of the monitoring module 7, so that the monitoring chamber in the monitoring box 2 can gradually become larger from small. After the monitoring chamber becomes larger, the concentration of the harmful medium contained in the air in the monitoring chamber decreases, providing different conditions for the initial detection and secondary detection of the monitoring module 7. An early warning signal is sent through the initial detection to remind the maintenance personnel. The misoperation of the fire extinguishing system can be avoided through the secondary detection. Moreover, by calculating the time interval between the initial detection and the secondary detection, the severity of the fault occurrence can be judged, so that the maintenance personnel can implement corresponding maintenance measures targeted.

[0035] The electric meter box proposed by the present invention is provided with a plurality of monitoring boxes 2 inside it. The mounting bracket 3 is movably arranged in the monitoring box 2, so that a monitoring chamber with an adjustable volume is formed in the monitoring box 2. The monitoring module 7 is arranged in the monitoring chamber. The space of the monitoring chamber is small and relatively closed, and the change of the harmful medium contained in the air inside it is easy to detect, making the monitoring module 7 more sensitive to the perception of faults, solving the problem of lag in the real-time monitoring of the electric meter box and being safer to use.

[0036] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A meter box with safe disassembly and assembly, comprising a box body (1), characterized in that: A plurality of monitoring boxes (2) are fixedly installed inside the box body (1). The front side of the monitoring box (2) is open. An extractable mounting bracket (3) is movably arranged in each monitoring box (2). A clamping component is arranged on the inner bottom wall of each monitoring box (2), and the mounting bracket (3) is constrained in the monitoring box (2) through the clamping component; The mounting bracket (3) includes a base (4) and a mounting plate (5). The mounting plate (5) is fixedly installed on the upper side of the base (4). The electric energy meter (6) is embedded and installed on the mounting plate (5). The base (4) is slidably inserted into the monitoring box (2), and the mounting plate (5) covers the front opening of the monitoring box (2). A monitoring module (7) is installed in the monitoring box (2).

2. The safety-disassembling and assembling type electric meter box according to claim 1, characterized in that: The mounting plate (5) is obliquely fixed on the upper side of the base (4). Baffles (8) are fixedly installed on the left and right sides and the lower side of the mounting plate (5). The outer wall of the baffle (8), the upper plane of the mounting plate (5) and the inner wall of the monitoring box (2) are in sliding contact, so as to form a closed monitoring cavity between the mounting plate (5), the baffle (8) and the interior of the monitoring box (2), and the monitoring module (7) is arranged in the monitoring cavity.

3. The electric meter box with safe disassembly and assembly according to claim 2, characterized in that: An air cavity is formed inside the base (4). A piston type telescopic rod (9) is slidably installed in the air cavity. A pressing spring (10) for outwardly pressing the piston type telescopic rod (9) is arranged inside the base (4). Under the action of the pressing spring (10), the end of the piston type telescopic rod (9) extends out of the air cavity and presses against the inner wall of the monitoring box (2). A valve (23) is arranged on the front side of the base (4), and the air cavity is communicated with the outside through the valve (23).

4. The electric meter box with safe disassembly and assembly according to claim 3, characterized in that: The clamping component includes a housing (11) fixedly installed on the inner bottom wall of the monitoring box (2). A telescopic pin (12) is slidably installed in the housing (11). A return spring (13) for outwardly pressing the telescopic pin (12) is arranged inside the housing (11). A serrated groove (14) is formed on the surface of the base (4). When the base (4) is slidably installed in the monitoring box (2), the end of the telescopic pin (12) is clamped in the serrated groove (14).

5. The electric meter box with safe disassembly and assembly according to claim 4, characterized in that: A manual switch (15) is slidably installed on the front side of the housing (11). An electromagnetic telescopic rod (16) is fixedly installed inside the housing (11). A cross plate (17) is fixedly installed at the telescopic end of the electromagnetic telescopic rod (16). A connecting rod (18) is rotatably installed at the end of the cross plate (17). A lever member (19) is rotatably installed on the inner side of the manual switch (15). One end of the lever member (19) away from the manual switch (15) is rotatably connected with the connecting rod (18). A waist-shaped groove is formed on the surface of the lever member (19). A connecting column (20) is arranged on the surface of the telescopic pin (12), and the connecting column (20) is inserted into the waist-shaped groove.

6. The electric meter box with safe disassembly and assembly according to claim 5, characterized in that: The monitoring module (7) includes a smoke sensor, a temperature sensor, a humidity sensor and a water immersion sensor. The monitoring module (7) is electrically connected with the electromagnetic telescopic rod (16). When any one or more of the smoke sensor, the temperature sensor, the humidity sensor and the water immersion sensor are triggered, the electromagnetic telescopic rod (16) is started to complete one telescopic action of the electromagnetic telescopic rod (16).

7. The electric meter box with safe disassembly and assembly according to claim 6, characterized in that: A fire extinguishing gas cylinder (21) is arranged in the box body (1), an electric-controlled nozzle (22) is fixedly installed in the monitoring box (2), the electric-controlled nozzle (22) is connected to the fire extinguishing gas cylinder (21) through a pipeline, and the monitoring module (7) is electrically connected to the electric-controlled nozzle (22). When any one or more of the smoke sensor and the temperature sensor are triggered, the electric-controlled nozzle (22) is activated in linkage.

8. A monitoring method for an electricity meter box with safe disassembly and assembly, using an electricity meter box with safe disassembly and assembly as described in claim 7, characterized in that, The following steps are involved: S1, initial detection, when the harmful medium in the monitoring box (2) increases, causing any one or more of the smoke sensor, the temperature sensor, the humidity sensor, and the water immersion sensor to be triggered, the electromagnetic telescopic rod (16) is started, and the electromagnetic telescopic rod (16) completes a telescopic action, and under the action of the pressure spring (10), the mounting bracket (3) is driven to move from the inside of the monitoring box (2) to the outside, the inner cavity of the monitoring cavity becomes larger, and the concentration of the harmful medium is reduced; S2, secondary detection, when the hazardous medium continues to increase until the monitoring module (7) is triggered again, S1 is repeated to drive the mounting bracket (3) to move from the inside of the monitoring box (2) to the outside, and the inner cavity of the monitoring cavity gradually becomes larger, thereby reducing the concentration of the hazardous medium in the monitoring cavity; S3, early warning and fire extinguishing, when S1 and S2, the monitoring module (7) sends out a monitoring signal to trigger the early warning system to start, and sends out an alarm signal; when S2 is completed, any one or more of the smoke sensor and the temperature sensor are triggered, and the electronically controlled nozzle (22) is simultaneously activated, and the electronically controlled nozzle (22) injects a fire extinguishing medium into the monitoring cavity.

9. The monitoring method of an electricity meter box with safe disassembly and assembly according to claim 8, characterized in that: The hazardous media include the temperature generated by the electric energy meter (6) and the power supply line fault, the smoke generated by the temperature rise, the water vapor in the air in the monitoring cavity, and the moisture entering the monitoring cavity from the outside.

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