Wall-mounted electric energy metering box

Abstract

The invention relates to the technical field of electric energy metering boxes, and discloses a wall-mounted electric energy metering box which comprises a metering box body which is of a cuboid box body structure, an electrical equipment mounting cavity is formed in the metering box body, an openable access door and a sliding frame are arranged on the front face of the metering box body, a T-shaped sliding groove extending in the vertical direction is formed in the metering box body, and the section of the sliding groove is in a T shape to form a bilateral limiting structure; the sliding frame is movably attached to the back face of the metering box body, and the movable plate is in sliding fit with a T-shaped sliding groove of the sliding frame and used for being connected with and supporting the metering box body. According to the wall-mounted electric energy metering box, when the interior of the metering box is on fire or smokes due to short circuit, a power supply is automatically cut off, a cooling fan is turned off, top sealing is conducted, an electric push rod retracts to enable an air guide frame to fall down, a top ventilation opening is closed, side face sealing is conducted, a linkage device triggers a spring to push a sealing gasket, and cooling holes in the two sides are blocked. Internal oxygen supply is greatly reduced, fire spreading is effectively delayed, and time is won for manual disposal.

Description

Technical Field

[0001] This invention relates to the field of electricity metering box technology, specifically a wall-mounted electricity metering box. Background Technology

[0002] Electricity metering boxes are important infrastructure in power systems used to install electricity meters, protection devices, and other equipment. They are typically wall-mounted. However, existing electricity metering boxes still have the following problems in terms of structural design, installation and adjustment, and safety protection: Inconvenient installation and adjustment: Traditional metering boxes require repeated adjustments to their horizontal position during installation, usually relying on manual visual inspection or a level. The adjustment process is cumbersome, and once fixed, it is difficult to make fine adjustments, which affects installation efficiency. Fire prevention issues: When an internal short circuit or overload fault occurs, it may cause a fire. However, the existing metering box lacks automatic fire prevention measures and relies solely on manual detection and extinguishing, which delays the response time and may cause serious losses. Lack of automatic safety protection mechanisms: Although some metering boxes are equipped with smoke detectors, they only provide audible and visual alarms and cannot be linked to control the ventilation system or seal off the fire source, causing the fire to spread rapidly and resulting in serious losses. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the present invention provides a wall-mounted electricity metering box to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A wall-mounted electricity metering box includes: The main body of the metering box is a rectangular box structure, which forms an electrical equipment installation cavity inside, and has an openable maintenance door on the front. The sliding frame has a T-shaped groove extending vertically inside. The groove has a T-shaped cross-section to form a double-sided limiting structure. The sliding frame is movably attached to the back of the metering box body. The movable plate slides in conjunction with the T-shaped groove of the sliding frame. The gap between the movable plate and the groove is 0.5-1mm to achieve wobbling-free sliding. It is used to connect and support the main body of the metering box. Two mounting plates are used to fix the movable plate to the wall. The two mounting plates are fixedly welded to the side of the movable plate away from the main body of the metering box. The mounting plates are provided with at least two through bolt mounting holes. Heat dissipation holes are provided to assist in heat dissipation, and these holes are located on both sides of the main body of the metering box. An adjusting plate and a sleeve are used to assist in adjusting the horizontal angle of the metering box. The sleeve is rotatably connected to the inside of the metering box body, and an adjusting plate is fixedly welded to one end of the sleeve near the moving plate. Bolt 1 is used to compress and restrict the sliding of the movable plate inside the slide frame; Bolt 1 is threaded into the inside of the sleeve. Two bolts are used to restrict the sliding frame from rotating along the sleeve. The two bolts are threadedly connected to the inside of the metering box body and penetrate through the inside of the metering box body to fit against the sliding frame. A suspension plate is used to suspend electrical equipment, and the suspension plate is fixedly welded to the inside of the metering box body.

[0005] Preferred options also include: Two electric actuators are used to generate thrust, and the two electric actuators are fixedly installed inside the metering box body; Two support plates are used to provide supporting force, and both support plates are fixedly installed at the output ends of the two electric actuators; Two insert rods are used to support the heat dissipation assembly, and the two insert rods are slidably connected inside the metering box body; An air guide frame is used to guide air, and the air guide frame is fixedly installed on the top of two plug rods; A cooling fan and a crossbar for generating thrust, wherein the crossbar is fixedly installed inside the air guide frame and the cooling fan is fixedly installed on the crossbar inside the air guide frame; Multiple guide rods are used to support the structure, and the multiple guide rods are fixedly installed on the top of the air guide frame; An air guide shroud is used to guide airflow, and the air guide shroud is fixedly installed on the top of the metering box body; A blocking plate is used to block the air guide cover, and the blocking plate is fixedly installed on the top of multiple guide rods; A dustproof net is installed between the air guide frame and the sealing plate to prevent dust from entering the interior of the metering box. A connecting plate, fixedly installed between two support plates, is used to support the structure; A smoke alarm is used for early warning and signal transmission. Its detection sensitivity is adjustable. The smoke alarm is fixedly installed inside the connecting plate.

[0006] Preferred options also include: The partition plate is fixedly welded to the top of the connecting plate and is used to drive the structure to move. Multiple connecting rods are fitted to the bottom of the connecting plate, and adjacent connecting rods are connected together by a threaded connection. Bolt 3 is used to connect the top connecting rod. Bolt 3 is installed through the inside of the connecting plate and is threadedly connected to the top connecting rod. A locking block, used to push the structure to move, is threadedly connected to the bottom end of the connecting rod; A cutting blade and an arc blade are used to cut the rope. The cutting blade is fixedly installed on the outside of the clamping block. The cutting edge of the cutting blade and the cutting edge of the arc blade are offset in the vertical direction by a distance of 2-3mm. A horizontal plate, used for shielding structure, is fixedly welded to the inside of the metering box body; A vertical plate is used to support the horizontal plate, and the vertical plate is fixedly welded to the inside of the metering box body; Multiple springs are fixedly welded to both sides of the vertical plate to provide elasticity; Two pads are used to block the heat dissipation holes, and the two pads are slidably connected to the inside of the horizontal plate and the metering box body; Two sealing gaskets are used to seal the heat dissipation holes, and the two sealing gaskets are respectively fixed on the outside of the two gasket plates; Two hooks are used to hook the rope, and the two hooks are fixed to the two pads on one side that are close to each other; A rope, used to pull the pads on both sides, is movably looped around the outside of the two hooks.

[0007] Preferably, the plurality of springs are welded to one side of two adjacent pads, and the interior of the vertical plate has a groove for the rope to pass through.

[0008] Preferably, the locking block is slidably connected inside the groove, and the rope is disposed between the cutting blade and the curved blade.

[0009] Preferably, a sealing gasket is provided on the side of the sealing plate near the main body of the metering box, and a sealing groove corresponding to the sealing gasket is opened at the top of the air guide shroud.

[0010] Preferably, the horizontal plate has a movable hole inside, and the connecting rod passes through the movable hole.

[0011] Preferred options also include: A maintenance plate is provided on the front of the metering box body for easy maintenance. The maintenance plate is fixed to the outside of the metering box body by locking bolts.

[0012] Preferred options also include: The controller is fixedly installed inside the metering box body; The controller is electrically connected to the smoke alarm and the electric actuator. When the smoke alarm is triggered, the controller automatically cuts off the power to the cooling fan and controls the electric actuator to retract.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. This wall-mounted electricity metering box automatically cuts off the power supply and shuts down the cooling fan when a fire or smoke occurs inside the metering box due to a short circuit. Top sealing: The electric push rod retracts, causing the air guide frame to fall and seal the top ventilation opening. Side sealing: The linkage device triggers a spring to push the sealing gasket, blocking the heat dissipation holes on both sides. Effect: Through the double sealing of the top and sides, the internal oxygen supply is greatly reduced, effectively delaying the spread of fire and buying time for manual disposal.

[0014] 2. For this wall-mounted electricity metering box, first fix the mounting plate to the wall, lift the main body of the metering box, slide the frame into the movable plate, temporarily suspend it, and then tighten bolt one to press the T-shaped groove between the movable plate and the sliding frame to increase friction and prevent lateral sliding. Loosen bolt two, and the main body of the metering box can rotate around the sleeve. After adjusting to the required angle, tighten bolt two to make the sliding frame fit tightly against the back of the main body of the metering box, thus completing the fixation and achieving the effect of convenient fixation.

[0015] 3. For this wall-mounted electricity metering box, loosen bolt two, rotate the main body of the metering box to a horizontal position (a level is required), and then tighten bolt two again to lock the horizontal state. This allows for quick adjustment of the horizontal position of the main body of the metering box. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the metering box of the present invention; Figure 2 This is a schematic rear view of the metering box of the present invention; Figure 3 This is an exploded three-dimensional schematic diagram of the metering box structure of the present invention; Figure 4 This is a three-dimensional schematic diagram of the metering box of the present invention in the open state; Figure 5 This is a frontal sectional view of the structure of the present invention; Figure 6 This is a three-dimensional schematic diagram of the horizontal plate and its related structures of the present invention; Figure 7 This is a three-dimensional schematic diagram of the spring and related structures of the present invention; Figure 8 This is a three-dimensional schematic diagram of the sealing structure and related structures of the present invention; Figure 9 This is a three-dimensional schematic diagram of the sealing structure of the present invention; Figure 10 This is a three-dimensional schematic diagram of the connecting rod and related structures of the present invention.

[0017] In the diagram: 1. Metering box body; 2. Sliding frame; 3. Moving plate; 4. Mounting plate; 5. Heat dissipation hole; 6. Adjusting plate; 7. Bolt 1; 8. Bolt 2; 9. Suspension plate; 10. Electric push rod; 11. Support plate; 12. Insert rod; 13. Air guide frame; 14. Cooling fan; 15. Guide rod; 16. Sealing plate; 17. Dustproof net; 18. Connecting plate; 19. Smoke alarm; 20. Partition plate; 21. Bolt 3; 22. Connecting rod; 23. Locking block; 24. Cutting knife; 25. Arc-shaped knife; 26. Horizontal plate; 27. Vertical plate; 28. Spring; 29. ​​Pad plate; 30. Hook; 31. Rope; 32. Sealing gasket; 33. Air guide cover. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: Please refer to Figure 1-10. A wall-mounted electricity metering box includes: The main body of the metering box 1 is a rectangular box structure, which forms an electrical equipment installation cavity inside, and has an openable maintenance door on the front. The sliding frame 2 has a T-shaped groove extending vertically inside. The groove has a T-shaped cross-section to form a double-sided limiting structure. The sliding frame 2 is movably attached to the back of the metering box body 1. The movable plate 3 slides in conjunction with the T-shaped groove of the sliding frame 2. The gap between the movable plate 3 and the groove is 0.5-1mm to achieve smooth sliding without shaking. It is used to connect and support the main body 1 of the metering box. Two mounting plates 4 are used to fix the movable plate 3 to the wall. The two mounting plates 4 are fixedly welded to the side of the movable plate 3 away from the metering box body 1. The mounting plates 4 are provided with at least two through bolt mounting holes. Heat dissipation holes 5 are used to assist in heat dissipation. The heat dissipation holes 5 are opened on both sides of the metering box body 1. The adjusting plate 6 and the sleeve are used to assist in adjusting the horizontal angle of the metering box. The sleeve is rotatably connected to the inside of the metering box body 1, and the adjusting plate 6 is fixedly welded to one end of the sleeve near the moving plate 3. Bolt 7 is used to compress and restrict the sliding of the movable plate 3 inside the slide frame 2. Bolt 7 is threaded inside the sleeve. Two bolts 28 are used to restrict the sliding frame 2 from rotating along the sleeve. The two bolts 28 are threadedly connected to the inside of the metering box body 1 and penetrate through the inside of the metering box body 1 to fit against the sliding frame 2. The suspension plate 9 is used to suspend electrical equipment. The suspension plate 9 is fixedly welded to the inside of the metering box body 1. Specifically, when using this device, the two mounting plates 4 need to be fixed to the designated mounting wall first. At this time, the movable plate 3 is fixed to the wall. Then, the operator raises the main body 1 of the metering box, puts the sliding frame 2 on the outside of the movable plate 3, and then gradually moves the movable plate 3 into the inside of the sliding frame 2. At this time, the main body 1 of the metering box is temporarily suspended on the movable plate 3. Then, the bolt 7 is turned so that the bolt 7 gradually fits against the movable plate 3, forming a squeezing force, so that the movable plate 3 can fit tightly against the T-shaped sliding groove, increasing the friction. At this time, the movable plate 3 will not slide laterally inside the ring frame, but the main body 1 of the metering box can rotate along the sleeve. The operator can turn the bolt 8 so that the adjusting plate 6 can move towards the inspection door. At this time, a squeezing force is formed, forcing the sliding frame 2 to fit against the back of the main body 1 of the metering box. At this time, the main body 1 of the metering box will no longer move, completing the suspension of the main body 1 of the metering box. If it is necessary to adjust the horizontal position of the metering box body 1, turn bolt 28 to make the adjusting plate 6 drive the sleeve to move towards the position of the sliding frame 2. At this time, the metering box body 1 can rotate along the sleeve. When the metering box body 1 is measured to be horizontal using a level, tighten bolt 28 to achieve the effect of fine adjustment of the horizontal position of the metering box body 1. Example 2: Please refer to Figure 1-10. Also includes: Two electric actuators 10 are used to generate thrust, and the two electric actuators 10 are fixedly installed inside the metering box body 1; Two support plates 11 are used to provide supporting force, and both support plates 11 are fixedly installed at the output ends of the two electric actuators 10; Two insert rods 12 are used to support the heat dissipation components, and the two insert rods 12 are slidably connected inside the metering box body 1; The air guide frame 13 is used to guide air, and the air guide frame 13 is fixedly installed on the top of the two plug rods 12; The cooling fan 14 and the crossbar are used to generate thrust. The crossbar is fixedly installed inside the air guide frame 13, and the cooling fan 14 is fixedly installed on the crossbar inside the air guide frame 13. Multiple guide rods 15 are used to support the structure, and the multiple guide rods 15 are fixedly installed on the top of the air guide frame 13; The air guide shroud 33 is used to guide the airflow, and the air guide shroud 33 is fixedly installed on the top of the metering box body 1; The sealing plate 16 is used to block the air guide shroud 33. The sealing plate 16 is fixedly installed on the top of multiple guide rods 15. A dustproof net 17 is installed between the air guide frame 13 and the sealing plate 16 to prevent dust from entering the interior of the metering box body 1; A connecting plate 18 is fixedly installed between two support plates 11 to support the structure. Smoke alarm 19 is used for early warning and signal transmission. Its detection sensitivity is adjustable. Smoke alarm 19 is fixedly installed inside the connecting plate 18. Specifically, when a short circuit occurs inside the metering box body 1, producing smoke or open flame, the smoke alarm 19 issues a warning and transmits a signal to the controller. The controller then cuts off the power to the cooling fan 14 and retracts the electric push rod 10. The electric push rod 10 moves the support plate 11 away from the insertion rod 12. Under the influence of gravity, the air guide frame 13 moves the guide rod 15 and the sealing plate 16 downwards, and the cooling fan 14 follows. When the sealing plate 16 is attached to the air guide cover 33, a relatively sealed environment is formed at the top, which can reduce the amount of air entering the metering box body 1 and reduce the amount of oxygen entering. This can control the fire to a certain extent, allowing staff to extinguish the fire and reduce losses. In the embodiment: a sealing gasket 32 ​​is provided on the side of the sealing plate 16 near the metering box body 1, and a sealing groove corresponding to the sealing gasket 32 ​​is opened at the top of the air guide hood 33. Specifically, a sealing gasket 32 ​​is provided at the bottom of the sealing plate 16, which works in conjunction with the sealing groove to form a sealed environment, thereby reducing airflow between the air guide shroud 33 and the sealing plate 16; Example 3: Please refer to Figure 1-10. The partition plate 20 is fixedly welded to the top of the connecting plate 18 and is used to drive the structure to move; Multiple connecting rods 22 are fitted to the bottom of the connecting plate 18, and adjacent connecting rods 22 are connected together by a threaded connection. Bolt 3 21 is used to connect the top connecting rod 22. Bolt 3 21 is installed through the inside of the connecting plate 18 and is threadedly connected to the top connecting rod 22. The locking block 23 is used to push the structure to move, and the locking block 23 is threaded to the bottom end of the connecting rod 22; The cutting blade 24 and the curved blade 25 are used to cut the rope 31. The cutting blade 24 is fixedly installed on the outside of the clamping block 23. The cutting edge of the cutting blade 24 and the cutting edge of the curved blade 25 are offset in the vertical direction, with an offset distance of 2-3mm. The horizontal plate 26 is used for the shielding structure and is fixedly welded to the inside of the metering box body 1. Vertical plate 27 is used to support horizontal plate 26. Vertical plate 27 is fixedly welded to the inside of metering box body 1. Multiple springs 28 are fixedly welded to both sides of the vertical plate 27 to provide elastic force; Two pads 29 are used to block the heat dissipation holes 5. The two pads 29 are slidably connected to the inside of the horizontal plate 26 and the metering box body 1. Two sealing gaskets 32 are used to seal the heat dissipation holes 5, and the two sealing gaskets 32 are respectively fixed on the outside of the two pads 29; Two hooks 30 are used to hook the rope 31, and the two hooks 30 are fixed on the side of the two pads 29 that are close to each other; Rope 31 is used to pull the pads 29 on both sides. Rope 31 is movably sleeved on the outside of the two hooks. Specifically, in the above embodiment 2 operation steps, after the electric push rod 10 is triggered, the support plate 11 moves and can drive the connecting plate 18 to move. The partition plate 20 on the connecting plate 18 will drive the connecting rod 22 to move towards the position of the sliding frame 2. At this time, the locking block 23 on the connecting rod 22 will move with it. The locking block 23 will drive the cutting blade 24 to move towards the position of the arc blade 25. At this time, the rope 31 can be cut. After the rope 31 is cut, the spring 28 loses its restriction, and the pad plate 29 will drive the sealing pad 32 to move towards the heat dissipation hole 5 until it fits against the heat dissipation hole 5. This can reduce the effect of fresh air entering the metering box body 1, slow down the combustion speed, and reduce losses. In the embodiment: multiple springs 28 are respectively welded to the side of two pads 29 that are close to each other, and the interior of the vertical plate 27 has a groove for the rope 31 to pass through; Specifically, the spring 28 applies a spring force to the pad 29. When the rope 31 is broken, the spring 28 can drive the pad 29 to move toward the heat dissipation hole 5. The vertical plate 27 has a groove inside for installing the clip 23 and passing the rope 31. In this embodiment: the locking block 23 is slidably connected inside the groove, and the rope 31 is disposed between the cutting blade 24 and the arc blade 25; Specifically, the locking block 23 is slidably connected inside the groove, which can achieve the effect of stable movement of the locking block 23. The rope 31 is set between the cutting blade 24 and the curved blade 25, which can cut more effectively and precisely. In this embodiment: a movable hole is provided inside the horizontal plate 26, and the connecting rod 22 is disposed through the movable hole; Specifically, the inside of the horizontal plate 26 has a moving hole, which allows the connecting rod 22 to move, so that the connecting rod 22 can move towards the sliding frame 2 behind the metering box body 1; In the embodiment, it also includes: The inspection plate is used to facilitate maintenance. The inspection plate is provided on the front of the metering box body 1 and is fixed to the outside of the metering box body 1 by locking bolts. Specifically, the inspection plate is designed to facilitate maintenance, allowing for the replacement and resetting of rope 31. The device can be reused in case of accidental contact with the electric push rod 10 or minor damage. In the embodiment, it also includes: The controller is fixedly installed inside the main body 1 of the metering box; The controller is electrically connected to the smoke alarm 19 and the electric push rod 10. When the smoke alarm 19 is triggered, the controller automatically cuts off the power to the cooling fan 14 and controls the electric push rod 10 to retract. Specifically, when the smoke alarm 19 detects smoke, it sends a command to the controller, which then controls the electric actuator 10 to retract and simultaneously cuts off the power to the cooling fan 14. In the embodiment: the controller, electric actuator 10 and smoke alarm 19 are existing structures, and the control circuit can be implemented by simple programming by those skilled in the art. They are common knowledge in the art, and are only used without modification. Therefore, the control method and circuit connection will not be described in detail. Working principle: Installation and fixing: First, fix the mounting plate 4 to the wall, and then fix the movable plate 3. Lift the metering box body 1, put the sliding frame 2 on its back into the movable plate 3, temporarily suspend it, and tighten the bolt 7. Increase the friction by squeezing the T-shaped sliding groove between the movable plate 3 and the sliding frame 2 to prevent lateral sliding. Loosen the bolt 8, and the metering box body 1 can rotate around the sleeve. After adjusting to the required angle, tighten the bolt 8 so that the sliding frame 2 is close to the back of the metering box body 1 to complete the fixing. Horizontal fine adjustment: Loosen bolt 28, rotate the main body 1 of the metering box to the horizontal position with the assistance of a level, and then tighten bolt 28 again to lock the horizontal state; When smoke or open flame is generated inside the metering box body 1 due to a short circuit: When the smoke alarm 19 is triggered, the controller immediately cuts off the power to the cooling fan 14 and simultaneously controls the electric push rod 10 to retract, causing the support plate 11 and connecting plate 18 to move downwards. After the electric push rod 10 retracts, the air guide frame 13 and the sealing plate 16 move downwards due to gravity and fit against the air guide hood 33, sealing the top ventilation. When the connecting plate 18 moves downwards, it pushes the connecting rod 22 through the partition 20, causing the locking block 23 to drive the cutting blade 24 to cut the rope 31. After the rope 31 breaks, the spring 28 releases its elasticity, pushing the pad 29 and the sealing gasket 32 ​​to seal the heat dissipation holes 5 on both sides, further blocking the entry of oxygen. Through the double sealing of the top and sides, the internal oxygen supply is greatly reduced, effectively delaying the spread of the fire and buying time for manual disposal.

[0020] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wall-mounted electricity metering box, characterized in that, include: The main body of the metering box (1) is a rectangular box structure, with an electrical equipment installation cavity inside, and an openable maintenance door on the front. The sliding frame (2) has a T-shaped sliding groove extending vertically inside. The groove has a T-shaped cross-section to form a double-sided limiting structure. The sliding frame (2) is movably attached to the back of the metering box body (1). The movable plate (3) slides in conjunction with the T-shaped groove of the sliding frame (2). The gap between the movable plate (3) and the groove is 0.5-1mm to achieve smooth sliding without shaking. It is used to connect and support the main body (1) of the metering box. Two mounting plates (4) are used to fix the movable plate (3) to the wall. The two mounting plates (4) are fixedly welded to the side of the movable plate (3) away from the metering box body (1). The mounting plates (4) are provided with at least two through bolt mounting holes. Heat dissipation holes (5) are used to assist in heat dissipation. The heat dissipation holes (5) are opened on both sides of the metering box body (1). Adjustment plate (6) and sleeve are used to assist in adjusting the horizontal angle of the metering box. The sleeve is rotatably connected to the inner side of the metering box body (1). The adjustment plate (6) is fixedly welded to one end of the sleeve near the moving plate (3). Bolt 1 (7) is used to compress and restrict the sliding of the movable plate (3) inside the slide frame (2), and the bolt 1 (7) is threaded inside the sleeve; Two bolts (8) are used to restrict the slide frame (2) from rotating along the sleeve. The two bolts (8) are threadedly connected to the inside of the metering box body (1) and penetrate the inside of the metering box body (1) to fit against the slide frame (2). A suspension plate (9) is used to suspend electrical equipment. The suspension plate (9) is fixedly welded to the inside of the metering box body (1).

2. The wall-mounted energy metering box according to claim 1, characterized in that, Also includes: Two electric actuators (10) are used to generate thrust, and the two electric actuators (10) are fixedly installed inside the metering box body (1); Two support plates (11) are used to provide support force, and both support plates (11) are fixedly installed at the output ends of two electric actuators (10); Two insert rods (12) are used to support the heat dissipation assembly, and the two insert rods (12) are slidably connected inside the metering box body (1); An air guide frame (13) is used to guide air, and the air guide frame (13) is fixedly installed on the top of two plug rods (12); A cooling fan (14) and a crossbar for generating thrust, the crossbar being fixedly installed inside the air guide frame (13), and the cooling fan (14) being fixedly installed on the crossbar inside the air guide frame (13); Multiple guide rods (15) are used to support the structure, and the multiple guide rods (15) are fixedly installed on the top of the air guide frame (13); An air guide shroud (33) is used to guide airflow, and the air guide shroud (33) is fixedly installed on the top of the metering box body (1); A blocking plate (16) is used to block the air guide shroud (33), and the blocking plate (16) is fixedly installed on the top of multiple guide rods (15); A dustproof net (17) is set between the air guide frame (13) and the sealing plate (16) to prevent dust from entering the interior of the metering box body (1); A connecting plate (18) is fixedly installed between two support plates (11) to support the structure; A smoke alarm (19) is used for early warning and signal transmission. Its detection sensitivity is adjustable. The smoke alarm (19) is fixedly installed inside the connecting plate (18).

3. A wall-mounted energy metering box according to claim 2, characterized in that, Also includes: The partition (20) is fixedly welded to the top of the connecting plate (18) and is used to drive the structure to move; Multiple connecting rods (22) are fitted to the bottom of the connecting plate (18), and adjacent connecting rods (22) are connected together by a threaded connection. Bolt 3 (21) is used to connect the top connecting rod (22). Bolt 3 (21) is disposed through the interior of the connecting plate (18) and is threadedly connected to the top connecting rod (22). A locking block (23) is used to push the structure to move, and the locking block (23) is threaded to the bottom end of the connecting rod (22); A cutting blade (24) and an arc blade (25) are used to cut the rope (31). The cutting blade (24) is fixedly installed on the outside of the clamping block (23). The cutting edge of the cutting blade (24) and the cutting edge of the arc blade (25) are offset in the vertical direction, with an offset distance of 2-3 mm. A horizontal plate (26) is used to shield the structure, and the horizontal plate (26) is fixedly welded to the inside of the metering box body (1); A vertical plate (27) is used to support a horizontal plate (26), and the vertical plate (27) is fixedly welded to the inside of the metering box body (1); Multiple springs (28) are fixedly welded to both sides of the vertical plate (27) to provide elastic force; Two pads (29) are used to block the heat dissipation holes (5). The two pads (29) are slidably connected to the inside of the cross plate (26) and the metering box body (1). Two sealing gaskets (32) are used to seal the heat dissipation holes (5), and the two sealing gaskets (32) are respectively fixed on the outside of the two pads (29); Two hooks (30) are used to hook the rope (31), and the two hooks (30) are fixed to the two pads (29) on the side of the two pads (29) that are close to each other; A rope (31) is used to pull the pads (29) on both sides, and the rope (31) is movably sleeved on the outside of the two hooks.

4. A wall-mounted energy metering box according to claim 3, characterized in that: Multiple springs (28) are welded to the side of two pads (29) that are close to each other. The vertical plate (27) has a groove inside for the rope (31) to pass through.

5. A wall-mounted energy metering box according to claim 3, characterized in that: The locking block (23) is slidably connected inside the groove, and the rope (31) is disposed between the cutting blade (24) and the arc blade (25).

6. A wall-mounted energy metering box according to claim 2, characterized in that: The sealing plate (16) is provided with a sealing gasket (32) on the side near the metering box body (1), and the top of the air guide hood (33) is provided with a sealing groove corresponding to the sealing gasket (32).

7. A wall-mounted energy metering box according to claim 3, characterized in that: The horizontal plate (26) has a movable hole inside, and the connecting rod (22) is disposed through the movable hole.

8. A wall-mounted energy metering box according to claim 1, characterized in that, Also includes: The inspection plate is used to facilitate maintenance. The front of the metering box body (1) is provided with an inspection plate, and the inspection plate is fixed to the outside of the metering box body (1) by locking bolts.

9. A wall-mounted energy metering box according to claim 3, characterized in that, Also includes: The controller is fixedly installed inside the metering box body (1); The controller is electrically connected to the smoke alarm (19) and the electric push rod (10). When the smoke alarm (19) is triggered, the controller automatically cuts off the power supply to the cooling fan (14) and controls the electric push rod (10) to retract.

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