Modularized electric energy metering box

Abstract

The invention discloses a modularized electric energy metering box, which relates to the technical field of electric energy metering, and comprises a box body, a box door, a modularized electric energy meter positioned in the box body, and a stretching mechanism used for stretching the modularized electric energy meter to the outside of the box body, the stretching mechanism comprises a U-shaped rack frame, a U-shaped grid frame fixedly installed on the side inner wall of the U-shaped rack frame, a first gear, a second gear, a rope winding disc and a pull rope wound around the rope winding disc. The modularized electric energy meter can be directly stretched out of the box body through the stretching mechanism composed of the U-shaped rack frame, the gear, the rope winding disc, the pull rope, the hanging ring and the hook, operation in a narrow space in the box is not needed, the maintenance difficulty is reduced, the electric energy meter can be automatically or easily reset after maintenance is completed in cooperation with the reset mechanism composed of the installation plate and the reset spring, and the maintenance efficiency is improved. Operation is simpler and faster, manual adjustment steps are reduced, maintenance efficiency is improved, the whole stretching and resetting process does not need to consume electricity, and energy conservation and environmental protection are facilitated.

Description

Technical Field

[0001] This invention relates to the field of electricity metering technology, and in particular to a modular electricity metering box. Background Technology

[0002] With the intelligent upgrading of power systems and the diversification of user electricity demands, various needs have emerged, such as distributed photovoltaic grid-connected metering and smart home electricity data monitoring. The role of electricity metering boxes has evolved from a single metering carrier to a key node connecting the power grid and users. They not only need to accurately perform basic electricity metering but also bear additional functions such as real-time data transmission and online equipment status monitoring. This has led to increasingly higher requirements for their ease of installation and maintenance, modular adaptability, and energy efficiency and environmental friendliness.

[0003] Traditional electricity metering boxes still have many technical limitations. First, electricity meters are mostly fixed inside the box, where the operating space is limited. During maintenance, staff must disassemble and adjust the meters within this confined space, making the operation difficult. Furthermore, there is a lack of convenient reset mechanisms, requiring repeated manual adjustments of the meter positions after maintenance, which is time-consuming and labor-intensive. Some electrically driven reset devices also increase energy consumption, failing to meet energy conservation and environmental protection requirements. Second, meter installation often uses bolt fastening or welding methods, requiring specialized tools for disassembly. Replacing damaged meters or increasing the number of meters for capacity expansion involves cumbersome disassembly and assembly processes, hindering the flexibility of modular installation. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a modular energy metering box, which solves the problem of inconvenient daily maintenance of modular energy metering boxes mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A modular electricity metering box includes a box body, a box door, and a modular electricity meter located inside the box body, and further includes:

[0007] A stretching mechanism is used to stretch the modular energy meter to the outside of the housing. The stretching mechanism includes a U-shaped rack frame, a U-shaped grid frame fixedly installed on the inner side wall of the U-shaped rack frame, a gear one, a gear two, a rope winding disc, and a pull rope wound on the rope winding disc.

[0008] A reset mechanism is provided for resetting the modular energy meter. The reset mechanism includes a mounting plate fixedly installed at the rear end of the U-shaped grid frame and a reset spring fixedly installed on the rear surface of the mounting plate. The reset spring is fixedly connected to the rear inner wall of the housing.

[0009] According to the present invention, a modular energy metering box is provided. The modular energy meter consists of a casing, a display screen, a metering module, a communication module, wiring terminals, and a plug-in board. The metering module consists of a voltage sampling circuit and a current sampling circuit, which are used to measure the voltage and current values ​​of the power grid in real time and with high precision.

[0010] According to the present invention, a modular power metering box is provided, wherein a rope sleeve is fixedly connected to the lower surface of the box body by a fixing rod one, and a hook is fixedly connected to the lower surface by a fixing rod two; the pull rope is sleeved with the rope sleeve, and a hanging ring is fixedly connected to the end of the rope sleeve.

[0011] According to a modular energy metering box provided by the present invention, the U-shaped grid frame is provided with slot grids, and the slot grids are inserted into the plug plate fixedly connected to the rear end of the modular energy meter.

[0012] According to the present invention, a modular power metering box is provided, wherein gear one and gear two are both meshed with a U-shaped rack frame, and gear one and gear two are symmetrically arranged.

[0013] According to a modular power metering box provided by the present invention, gear one is rotatably connected to the box body via mounting shaft one, the mounting shaft one extends through to the bottom of the box body and is fixedly connected to the rope winding reel, and gear two is rotatably connected to the box body via mounting shaft two.

[0014] According to a modular power metering box provided by the present invention, a horizontal rail rod is fixedly connected to the inner side wall of the U-shaped rack frame, a lamp holder is slidably connected to the horizontal rail rod, the lamp holder is rotatably connected to the horizontal rail rod, and a searchlight is fixedly connected to it.

[0015] Compared with existing technologies, the advantages of this invention are:

[0016] 1. The modular energy meter can be directly stretched to the outside of the box by a stretching mechanism consisting of a U-shaped rack and pinion frame, gears, rope winding disc, pull rope, hanging ring and hook, eliminating the need for operation in the confined space inside the box and reducing maintenance difficulty. In addition, the reset mechanism consisting of a mounting plate and a reset spring can automatically or easily reset the energy meter after maintenance, making operation simpler and faster, reducing manual adjustment steps, improving maintenance efficiency, and the entire stretching and reset process does not consume electricity, which is conducive to energy conservation and environmental protection.

[0017] 2: The slots of the U-shaped grid frame can be plugged into the back plate of the electricity meter, which can quickly complete the installation and removal of the electricity meter, facilitate the replacement or expansion of the electricity meter, and further improve the flexibility of modular installation.

[0018] 3: The searchlight on the U-shaped rack frame can slide and rotate with the lamp holder on the horizontal track rod, which can illuminate the operating area in low light conditions, making the operating environment more user-friendly.

[0019] In summary, the stretching mechanism, employing a combination of a U-shaped rack and pinion frame, gears, a rope winding disc, a pull rope, a hanging ring, and a hook, can smoothly pull the modular energy meter out of the enclosure, eliminating the need for operation in confined spaces and reducing maintenance difficulty. The reset mechanism, utilizing a mounting plate and a reset spring, automatically resets the modular energy meter, making operation simpler and faster. Both the stretching and reset processes require no electrical drive, thus exhibiting energy-saving and environmentally friendly characteristics. Structurally, the U-shaped grid frame with slot design allows for quick insertion and removal of the modular energy meter's rear insert plate, facilitating replacement. Furthermore, the searchlight can slide and rotate flexibly on the horizontal track, providing effective lighting support. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the internal structure of a modular power metering box proposed in this invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of a modular power metering box proposed in this invention;

[0022] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0023] Figure 4 for Figure 2 Top view;

[0024] Figure 5 for Figure 4 Schematic diagram of the structure of the middle BB surface;

[0025] Figure 6 for Figure 4 Schematic diagram of the structure of the C-plane;

[0026] Figure 7 for Figure 1 A schematic diagram of the reset mechanism in the middle;

[0027] Figure 8 for Figure 1 A schematic diagram of the U-shaped rack frame.

[0028] In the diagram: 1. Box body; 2. U-shaped rack frame; 3. Modular energy meter; 4. Mounting shaft two; 5. Gear two; 6. Ventilation window; 7. Unlock button; 8. Lock slot; 9. Fixing rod two; 10. Hook; 11. Rope reel; 12. Gear one; 13. Locking buckle; 14. Box door; 15. Door hinge; 16. Mounting shaft one; 17. Pull rope; 18. Hanging ring; 19. Fixing rod one; 20. Rope sleeve; 21. U-shaped grid frame; 22. Slot grid; 23. Horizontal slide rail; 24. Insert plate; 25. Horizontal track rod; 26. Lamp holder; 27. Searchlight; 28. Return spring; 29. ​​Horizontal slide rod one; 30. Horizontal slide rod two; 31. Mounting plate. Detailed Implementation

[0029] Reference Figure 1-8 A modular electricity metering box includes a box body 1, a box door 14, and a modular electricity meter 3 located inside the box body 1. A rope tube 20 is fixedly connected to the lower surface of the box body 1 by a fixing rod 19, and a hook 10 is fixedly connected to it by a fixing rod 29. A horizontal sliding groove 23 is provided on the inner wall of the box body 1 and is symmetrically arranged on the upper and lower sides of the box body 1. A heat dissipation window 6 is provided on both the left and right sides of the box body 1. A locking groove 8 is provided at the front end of the box body 1, and an unlocking button 7 is provided on the side surface. The box door 14 is rotatably connected to the box body 1 by a door hinge 15, and a locking buckle 13 that engages with the locking groove 8 is fixedly connected to the inner surface of the box door 14.

[0030] Specifically, when the cabinet door 14 needs to be opened, the unlock button 7 is pressed, the locking buckle 13 is released from the locking groove 8, and the cabinet door 14 is opened by rotating the door hinge 15, thereby exposing the interior of the cabinet 1; when the cabinet door 14 is closed, the cabinet door 14 is rotated so that the locking buckle 13 is engaged with the locking groove 8, thereby locking; the heat dissipation window 6 is used to promote air circulation inside the cabinet 1 and prevent overheating; the rope tube 20 and the hook 10 are used to organize and hang the pull rope 17 to keep the exterior of the cabinet 1 clean;

[0031] The modular energy meter 3 consists of a casing, a display screen, a metering module, a communication module, wiring terminals, and a plug-in board 24. The metering module consists of a voltage sampling circuit and a current sampling circuit, which are used to measure the voltage and current values ​​of the power grid in real time and with high precision.

[0032] Specifically, the modular energy meter 3 is fixed by inserting the plug plate 24 into the slot 22 of the U-shaped grid frame 21. When the user pulls the pull rope 17, the tensioning mechanism drives the U-shaped grid frame 21 to push the energy meter out of the box 1, which facilitates daily inspection and maintenance. The energy meter measures the current and voltage in the circuit in real time through internal sensors and calculates the energy consumption data. After use, the reset spring 28 automatically pulls the energy meter back into the box 1 for protection, ensuring long-term stable operation.

[0033] The display screen of the modular energy meter 3 is usually located on the front of the meter casing, used to display key energy parameters such as current energy reading, voltage, current, power, power factor, etc.; the metering module is a dedicated metering chip that continuously monitors the voltage and current signals in the line through internal voltage dividers, current dividers and current transformers, and calculates the active energy consumption; the communication module is responsible for remote data transmission and can integrate multiple communication interfaces, including RS-485 interface, power line carrier interface, low-power wireless interface and 4G / NB-IoT interface. The wiring terminals are located on the side or rear of the modular energy meter 3, used to connect the incoming line from the power grid and the outgoing line to the user, and usually include the access terminals and outgoing terminals for the live wire and neutral wire;

[0034] The electrical working principle of the modular energy meter 3 is mainly divided into signal acquisition, data processing, and information display and transmission. During signal acquisition, the modular energy meter 3 connects to the circuit through the wiring terminals. Its internal voltage and current sampling circuits measure the voltage and current values ​​of the power grid in real time with high precision. During data processing, the internal metering chip receives these voltage and current signals, digitizes them, and integrates the instantaneous power over time to obtain the total amount of energy consumed. During information display and transmission, the calculated cumulative energy consumption and other parameters are displayed in real time on the front display screen for on-site viewing. The communication module sends the energy data to the data acquisition unit or directly uploads it to the main station system via integrated communication methods according to a preset cycle or in response to remote commands, realizing remote automatic meter reading, electricity monitoring, and cost control management.

[0035] It also includes a stretching mechanism, which is used to stretch the modular energy meter 3 to the outside of the box 1. The stretching mechanism includes a U-shaped rack frame 2, a U-shaped grid frame 21 fixedly installed on the inner side wall of the U-shaped rack frame 2, a gear 12, a gear 25, a rope winding disc 11, and a pull rope 17 wound on the rope winding disc 11. The U-shaped grid frame 21 is provided with a slot 22, which is inserted into the insertion plate 24 fixedly connected to the rear end of the modular energy meter 3. Both the upper and lower ends of the U-shaped grid frame 21 are fixedly connected to a horizontal slide bar 29 that slides in the horizontal slide groove 23.

[0036] Gear 12 and gear 25 both mesh with U-shaped rack frame 2, and gear 12 and gear 25 are symmetrically arranged. Gear 12 is rotatably connected to the box 1 through mounting shaft 16. Mounting shaft 16 passes through to the bottom of box 1 and is fixedly connected to rope winding disc 11. Gear 25 is rotatably connected to box 1 through mounting shaft 24. Pull rope 17 is sleeved with rope sleeve tube 20 and has a hanging ring 18 fixedly connected to the end. A horizontal track rod 25 is fixedly connected to the inner side wall of U-shaped rack frame 2. A lamp holder 26 is slidably connected to the horizontal track rod 25. The lamp holder 26 is rotatably connected to the horizontal track rod 25 and has a searchlight 27 fixedly connected to it.

[0037] Specifically, when the modular energy meter 3 needs to be pulled out of the housing 1, the user pulls the hanging ring 18, the pull rope 17 is untied from the rope reel 11, and the mounting shaft 16 rotates, thereby driving the gear 12 to rotate. The gear 12 meshes with the U-shaped rack frame 2, causing the U-shaped rack frame 2 to move forward. At the same time, the gear 25 also meshes with the U-shaped rack frame 2 to assist its smooth movement. The U-shaped rack frame 2 drives the U-shaped grid frame 21 to slide in the horizontal slide groove 23 through the horizontal slide bar 29, thereby pushing the modular energy meter 3 out of the housing 1 to the appropriate working position.

[0038] The operator can hang the hanging ring 18 on the hook 10 and lock the rope reel 11 and the entire transmission mechanism by the tension of the pull rope 17, thereby preventing the modular energy meter 3 from retracting under the action of gravity or the return spring 28, and keeping it stably outside the box 1; the insertion of the insertion plate 24 into the slot grid 22 ensures that the modular energy meter 3 moves synchronously with the U-shaped grid frame 21; the searchlight 27 can slide and rotate on the horizontal track rod 25 through the lamp holder 26 to provide illumination for inspection work;

[0039] The reset mechanism is used to reset the modular energy meter 3. The reset mechanism includes a mounting plate 31 fixedly installed at the rear end of the U-shaped grid frame 21 and a reset spring 28 fixedly installed on the rear surface of the mounting plate 31. The reset spring 28 is fixedly connected to the rear inner wall of the box 1. Both the upper and lower ends of the mounting plate 31 are fixedly connected to horizontal slide rods 30 that slide in the horizontal slide groove 23.

[0040] Specifically, when the modular energy meter 3 needs to be reset, the user must first remove the hanging ring 18 from the hook 10 to release the lock on the rope reel 11 and the transmission system. Then, release the pull rope 17, and the elastic force stored in the compressed reset spring 28 is released, which drives the mounting plate 31 to move backward. The mounting plate 31 drives the U-shaped grid frame 21 to slide backward in the horizontal slide groove 23 through the horizontal slide bar 20, thereby pulling the modular energy meter 3 back into the housing 1. During this process, the U-shaped rack frame 2 moves backward, driving the gear 12 and gear 25 to reverse, so that the rope reel 11 rewinds the pull rope 17 until the hanging ring 18 is reset to near the rope tube 20, completing the entire reset process.

[0041] In this invention, the modular energy metering box is arranged around a tension system integrating gear rack and pinion and spring return. In the closed state, the modular energy meter 3 is securely connected to the slot 22 of the U-shaped grid frame 21 through its rear insert plate 24 and is stored in the box body 1, locked by the locking buckle 13 and locking groove 8 of the box door 14.

[0042] During operation, first press the unlock button 7 to open the box door 14, then pull the hanging ring 18 outward. The pull rope 17 is pulled and released, causing the rope reel 11 and its mounting shaft 16 to rotate, and the gear 12 on the shaft rotates accordingly. The gear 12 meshes with the U-shaped rack frame 2, driving the U-shaped rack frame 2 forward, while the symmetrically arranged gears 5 help ensure smooth movement. The U-shaped rack frame 2 drives the fixed U-shaped grid frame 21 forward together, and the horizontal slide bar 29 on the frame slides along the horizontal slide groove 23 inside the box 1, thereby smoothly sending the modular energy meter 3 out of the box 1. To maintain this extended state, the hanging ring 18 can be hung on the hook 10 at the bottom of the box 1, using the tension locking mechanism of the pull rope 17. At the same time, the horizontal track bar 25 and the searchlight 27 installed on the U-shaped rack frame 2 are moved out, and the angle can be adjusted to provide illumination.

[0043] During reset, simply remove the hanging ring 18 from the hook 10. The spring force of the reset spring 28 will push the mounting plate 31 to move backward, causing the U-shaped grid frame 21 and the modular energy meter 3 to move backward as a whole. This process forces the U-shaped rack frame 2 to move in the opposite direction, driving gear 12 and gear 25 to reverse, causing the rope winding disc 11 to rewind the pull rope 17, and finally completely retracting the modular energy meter 3 into the box 1, completing the operation cycle.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A modular energy metering box, comprising a box body (1), a box door (14), and a modular energy meter (3) located inside the box body (1), characterized in that, Also includes: The stretching mechanism is used to stretch the modular energy meter (3) to the outside of the box (1). The stretching mechanism includes a U-shaped rack frame (2), a U-shaped grid frame (21) fixedly installed on the inner wall of the side of the U-shaped rack frame (2), a gear one (12), a gear two (5), a rope winding disc (11), and a pull rope (17) wound on the rope winding disc (11). The reset mechanism is used to reset the modular energy meter (3). The reset mechanism includes a mounting plate (31) fixedly installed at the rear end of the U-shaped grid frame (21) and a reset spring (28) fixedly installed on the rear surface of the mounting plate (31). The reset spring (28) is fixedly connected to the rear inner wall of the box (1).

2. The modular energy metering box according to claim 1, characterized in that, The modular energy meter (3) consists of a casing, a display screen, a metering module, a communication module, wiring terminals, and a plug-in board (24). The metering module consists of a voltage sampling circuit and a current sampling circuit, which are used to measure the voltage and current values ​​of the power grid in real time and with high precision.

3. A modular energy metering box according to claim 1, characterized in that, The lower surface of the box (1) is fixedly connected to a rope tube (20) by a fixing rod one (19), and a hook (10) is fixedly connected by a fixing rod two (9). The pull rope (17) is sleeved with the rope tube (20), and a hanging ring (18) is fixedly connected to the end.

4. A modular energy metering box according to claim 2, characterized in that, The U-shaped grid frame (21) is provided with slot grids (22), which are connected to the plug plate (24) fixedly connected to the rear end of the modular energy meter (3).

5. A modular energy metering box according to claim 1, characterized in that, Both gear one (12) and gear two (5) mesh with the U-shaped rack frame (2), and gear one (12) and gear two (5) are symmetrically arranged.

6. A modular energy metering box according to claim 5, characterized in that, The first gear (12) is rotatably connected to the box (1) via the first mounting shaft (16), which extends through to the bottom of the box (1) and is fixedly connected to the rope winding disc (11). The second gear (5) is rotatably connected to the box (1) via the second mounting shaft (4).

7. A modular energy metering box according to claim 1, characterized in that, A horizontal track rod (25) is fixedly connected to the inner side wall of the U-shaped rack frame (2). A lamp holder (26) is slidably connected to the horizontal track rod (25). The lamp holder (26) is rotatably connected to the horizontal track rod (25) and a searchlight (27) is fixedly connected to it.

Images