Modularized electric energy metering box

Abstract

The invention relates to the technical field of electrical equipment, and discloses a modular electric energy metering box, which comprises a box body, electrical elements arranged in the box body, cables connected among the electrical elements, a fixed frame arranged on a bottom plate of the box body in a sliding manner, and an adjusting module arranged on the box body, the adjusting module is used for controlling the fixing frame to stretch out of a bottom plate of the box body when the box body is stacked, and a fixing ring groove for the fixing frame to stretch in is further formed in a side plate of the box body. When the box bodies of the metering box are stacked together, the fixing frames can extend out of the bottom plates of the box bodies through the adjusting modules and are inserted into the fixing ring grooves of the lower box bodies, mechanical interlocking between the upper box bodies and the lower box bodies is achieved in sequence, and transverse sliding or falling of the box bodies due to vibration or inertia in the transportation process is effectively prevented. And the stacking stability and the transportation safety of the metering box are improved.

Description

Technical Field

[0001] This application relates to the technical field of electrical equipment, and in particular to a modular power metering box. Background Technology

[0002] Electricity metering boxes are key metering devices in smart grids, typically deployed in the power supply circuits of buildings or industrial facilities. They are used to monitor electrical parameters such as power, current, and voltage in real time, and accurately calculate energy consumption based on this data. As a metering node connecting users and the power grid, it not only serves as the basis for electricity billing but also as a crucial foundation for achieving refined electricity management, supporting grid dispatching, and energy-saving analysis. In the context of increasingly intelligent and digital energy management, the reliability and accuracy of electricity metering boxes directly affect grid operating efficiency and user electricity safety, thus playing an irreplaceable role in modern power systems.

[0003] Currently, common electricity metering boxes mainly consist of a box body, internal electrical components, and connecting cables between these components. The assembly process generally follows a fixed procedure: first, the electrical components are installed on the internal brackets or rails of the box; then, cables are routed, crimped, and bundled according to the circuit design; after completing the electrical connections, the box door is closed; finally, the entire box is packed into a packaging box for transport to the site. While this structural design and assembly method can meet basic functional requirements in a static environment, it reveals significant limitations in subsequent distribution processes, especially in the logistics and transportation stage.

[0004] However, since metering boxes are typically stacked in multiple layers on forklifts for transport, the forklifts themselves and the total weight of the load are significant. During startup, braking, or on uneven surfaces, substantial inertia or vibration can occur, making unstable metering boxes prone to slipping and falling. Falls not only deform the outer casing but can also cause internal electrical components to loosen, break, or wires to detach, directly impacting metering accuracy and equipment lifespan. Furthermore, such damage is often difficult to detect quickly from the outside of the box. If missed during quality inspection, damaged metering boxes may be mistakenly sent to users. Once connected to the power grid, this can lead to inaccurate metering, line faults, and even safety accidents, thereby reducing overall production efficiency, increasing after-sales maintenance costs, and posing a potential threat to the operational safety of the smart grid. Therefore, improvements to the transport protection and stability design of metering boxes are urgently needed. Summary of the Invention

[0005] To improve the protection and stability of the electricity metering box during transportation, this application provides a modular electricity metering box.

[0006] The modular energy metering box provided in this application adopts the following technical solution: A modular energy metering box includes a box body, electrical components disposed in the box body and cables connecting the electrical components, and also includes a fixed frame slidably disposed on the bottom plate of the box body and an adjustment module disposed on the box body. The adjustment module is used to control the fixed frame to extend out of the bottom plate of the box body when the boxes are stacked. The side plate of the box body is also provided with a fixing ring groove for the fixed frame to extend into.

[0007] By adopting the above technical solution, when transporting the electricity metering box after assembly, the metering boxes can be stacked together first. Then, the fixing frame can be extended out of the bottom plate of the box and inserted into the fixing ring groove of the lower box through the adjustment module, thereby realizing the mechanical interlock between the upper and lower boxes. This effectively prevents the boxes from sliding laterally or falling due to vibration or inertia during transportation, and improves the stacking stability and transportation safety of the metering boxes.

[0008] Optionally, the adjustment module includes a connecting spring disposed on the fixed frame and a push rod disposed on the side of the fixed frame away from the bottom plate. The connecting spring has a tendency to drive the fixed frame away from the bottom plate of the box. The push rod is slidably disposed in the side plate of the box and the fixing ring groove. The side plate of the box is also provided with a locking member for locking the push rod in a position close to the bottom plate.

[0009] By adopting the above technical solution, when the metering boxes are stacked together and the fixing frame needs to be inserted into the fixing ring groove, simply push the push rod. This push rod causes the fixing frame to slide towards the side extending beyond the bottom plate, stretching the connecting spring and storing energy. Ultimately, the fixing frame inserts into the fixing ring groove of the lower box, and the locking device locks the push rod in a position close to the bottom plate. Simply push the push rod on the top box. Once the fixing frame in the top box is inserted into the fixing ring groove, the fixing frame will push the push rod in the lower box to continue sliding down, thus pushing the fixing frame of the second box into the fixing ring groove of the lower box. This sequentially achieves the fixing of each box from top to bottom. The operation is simple, eliminating the need to operate the push rod of each box, facilitating quick fixing of the boxes and reducing the time spent on fixing them, thereby improving the transportation efficiency of the metering boxes. The locking device firmly locks the push rod in a position close to the bottom plate, thus locking the fixing frame in the fixing ring groove, further ensuring the stacking stability between the boxes and guaranteeing the transportation safety of the metering boxes.

[0010] When the container arrives at its destination and needs to be unloaded, simply unlock the locking mechanism. Then, the fixing frame will move upward out of the fixing ring groove under the action of the connecting spring, thereby driving the push rod to slide away from the bottom plate. This will also cause the fixing frame and push rod in the container below to slide upward, so that the relative position between the containers is no longer limited by the fixing frame. This makes it easier for workers to unload the containers from the forklift from top to bottom without having to lift the containers first and then move them away. This also facilitates horizontal movement or handling of the containers during unloading.

[0011] Optionally, the push rod is provided with a toggle block, and the outer wall of the side plate of the housing is provided with a sliding groove for the toggle block to slide.

[0012] By adopting the above technical solution, when it is necessary to push the push rod to insert the fixed frame into the fixed ring groove, it is only necessary to slide the actuating block on the outer wall of the side plate. There is no need to reach into the fixed ring groove to push the push rod. The operation is simple and facilitates quick operation during stacking and unloading, improving loading and unloading efficiency. Moreover, the actuating block is built into the sliding groove, so when the metering boxes are stacked one next to another, the actuating block is not likely to be separated between the boxes. This results in a smaller space occupied when the boxes are stacked, which is convenient for transportation. The smaller the gap between each box, the higher the stability of the stack, and the less likely it is to fall apart, further enhancing the stability when transporting the metering boxes.

[0013] Optionally, the locking element includes a locking block slidably disposed on the side plate of the housing and a locking spring disposed on the locking block. The locking spring has a tendency to drive the locking block into the sliding groove. The locking block is provided with a guide slope, which is used to guide the locking block out of the sliding groove.

[0014] By adopting the above technical solution, during the process of pushing the fixed frame into the fixed ring groove by the sliding actuating block driving the push rod, the actuating block will abut against the guide slope, thereby pushing the locking block out of the sliding groove. The design of the guide slope makes it less likely for the locking block to obstruct the sliding of the actuating block towards the bottom plate, thus facilitating a smoother downward movement of the push rod by the actuating block. When the actuating block continues to slide into place, the locking block will extend into the sliding groove under the action of the locking spring, thereby preventing the actuating block, push rod, and fixed frame from moving upward, achieving the effect of locking the fixed frame in the fixed ring groove and ensuring the stacking stability of the box. When it is necessary to unlock the actuating block, simply slide the locking block out of the sliding groove. The operation is simple and convenient for unlocking the locking block during unloading, allowing the fixed frame to move out of the fixed ring groove.

[0015] Optionally, the push rod includes a fixed part and a movable part, and a support spring is provided between the fixed part and the movable part.

[0016] By adopting the above technical solution, when the push rod placed in the bottom box is pushed by the upper fixed frame, the thrust of the fixed frame will bring the fixed part and the movable part closer together, thereby compressing the support spring. This facilitates the insertion of the fixed frame in the upper box into the fixed ring groove, ensuring that the fixed frame of the bottom box is not blocked by the ground and thus ensuring the stacking stability between the boxes. Furthermore, the push rod in the uppermost box experiences less gravity or thrust from the fixed frame, making the support spring less likely to be compressed. This allows the push rod to move downwards a longer distance, which in turn pushes the fixed frame downwards a longer distance, resulting in a longer length of the fixed frame extending into the fixed ring groove. This, in turn, makes the stacking between the upper and lower boxes more stable. Conversely, the push rods in the lower boxes experience greater gravity or thrust from the fixing frames, resulting in shorter compression of the support springs. This leads to a shorter downward movement of the push rods, which in turn pushes the fixing frames a shorter distance, causing the fixing frames to extend less into the fixing ring grooves. This aligns with the natural law that lower boxes have higher stability, while upper boxes have lower stacking stability. Furthermore, this design prevents the fixing frames on the lower boxes from fully inserting into the fixing ring grooves, meaning the actuating blocks don't fully slide into place. This prevents the locking blocks from locking every actuating block on the lower boxes near the bottom plate. When unloading, it's unnecessary to unlock each locking block individually; only the locking blocks on the upper boxes need to be unlocked. The actuating blocks on the lower boxes then automatically move away from the bottom plate under the action of the connecting springs, causing the fixing frames to automatically move out of the fixing ring grooves. This simplifies the unloading process and improves efficiency.

[0017] Optionally, the side panel of the housing is provided with an installation groove for the sliding of the locking block, and the locking block is provided with an unlocking protrusion. The unlocking protrusion is located on the side of the locking block away from the side panel of the housing, and the unlocking protrusion is located in the side panel of the housing.

[0018] By adopting the above technical solution, when it is necessary to unlock the locking block, the locking block can be slid out of the sliding groove by sliding the unlocking protrusion, thereby unlocking the toggle block. The unlocking protrusion provides a point of leverage for the hand, making it easy for the hand to slide the locking block. Both the unlocking protrusion and the locking block are built into the side panel, which makes it less likely for gaps to be left between the boxes when they are stacked, further ensuring the stability of the stacked boxes.

[0019] Optionally, a receiving groove is provided on the side plate of the box body, and a support rod is rotatably provided on the groove wall of the receiving groove. The support rod can rotate towards or away from the bottom plate. The support rod includes a connecting part and an extension part. The connecting part is rotatably provided on the groove wall of the receiving groove, and the extension part is rotatably provided at one end of the connecting part.

[0020] By adopting the above technical solution, a rotatable support rod is installed on the side panel of the box, providing additional support during box installation or stacking. The support rod, the side panel of the box, and the placement surface together form a stable triangular support structure, enhancing the stability of the box stack and preventing tipping due to uneven ground or external impact. When the support rod is not needed, the extension can be rotated towards the connecting part, causing the extension and connecting part to overlap. Then, the movable part can be rotated towards the side panel of the box, allowing the support rod to be stored in the receiving slot, reducing the box's footprint and facilitating its movement.

[0021] Optionally, the connecting part is provided with a limiting protrusion. When the support rod is rotated to the position away from the bottom plate, the limiting protrusion abuts against the groove wall of the receiving groove.

[0022] By adopting the above technical solution, the limiting protrusion abuts against the wall of the receiving groove after the support rod rotates to the correct position, thereby playing a mechanical limiting role, preventing the support rod from rotating excessively, and ensuring a stable and reliable support state.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. When stacking boxes for easy transportation, after stacking the boxes, slide the lever on the upper box downwards so that the fixing frame is inserted into the fixing ring groove of the lower box from top to bottom. The fixing frame can prevent horizontal sliding between the boxes, so that the boxes are not easy to shake when the forklift is transporting or stopping, ensuring the stacking stability of the boxes and preventing damage to the measuring box. 2. After the fixed frame is inserted into the fixed ring groove, the locking block will automatically extend into the sliding groove under the action of the locking spring, thereby locking the toggle block and locking the fixed frame in the fixed ring groove of the lower box, which improves the stability of the relative position between the boxes. The support rod can also be unfolded, which provides additional support for the boxes when they are stacked, further ensuring the stacking stability of the boxes. 3. When unloading is required, simply slide the unlocking protrusion to make the locking block slide out of the sliding groove. Then, the toggle block, push rod and fixing frame will automatically move upward under the action of the connecting spring, so that the fixing frame moves out of the fixing ring groove, making it easy to unload. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0025] Figure 2 This is a schematic diagram of the overall structure of the fixed frame used in the embodiments of this application.

[0026] Figure 3 This is a partial structural diagram of the push rod shown after the side plate and bottom plate are hidden in the embodiment of this application.

[0027] Explanation of reference numerals in the attached figures: 1. Housing; 11. Sliding groove; 12. Mounting groove; 13. Receiving groove; 2. Fixing frame; 3. Adjustment module; 31. Connecting spring; 32. Push rod; 321. Toggle block; 322. Fixing part; 323. Moving part; 324. Support spring; 4. Fixing ring groove; 5. Locking component; 51. Locking block; 511. Guide slope; 512. Unlocking protrusion; 52. Locking spring; 6. Support rod; 61. Connecting part; 611. Limiting protrusion; 62. Extension part. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0029] This application discloses a modular power metering box.

[0030] Reference Figure 1 and Figure 2 A modular energy metering box includes a box body 1, electrical components (not shown in the figure) disposed in the box body 1, cables (not shown in the figure) connecting the electrical components, a fixing frame 2 slidably disposed on the bottom plate of the box body 1, and an adjustment module 3 disposed on the box body 1. The adjustment module 3 is used to control the fixing frame 2 to extend out of the bottom plate of the box body 1 when the boxes body 1 are stacked. A fixing ring groove 4 is also provided on the side plate of the box body 1 for the fixing frame 2 to extend into. In this way, when the boxes body 1 are stacked, the fixing frame 2 can extend into the fixing ring groove 4 of the lower box body 1. The cooperation between the fixing frame 2 and the fixing ring groove 4 restricts the relative movement between the boxes body 1, enhances the stacking stability of the boxes body 1, and prevents slippage and damage.

[0031] Reference Figure 1 , Figure 2 and Figure 3 The adjustment module 3 includes a connecting spring 31 mounted on the fixed frame 2 and push rods 32 mounted on the side of the fixed frame 2 away from the bottom plate. In this embodiment, the number of push rods 32 is preferably four, with each push rod 32 positioned on one of the four sides of the fixed frame 2. Two or more push rods 32 can slide simultaneously, thus pushing the fixed frame 2 more smoothly. The connecting spring 31 tends to drive the fixed frame 2 away from the bottom plate of the housing 1. The push rods 32 are typically rod-shaped structures made of metal, and they are slidably mounted on the side plate and the fixing ring groove 4 of the housing 1. The push rods 32 can slide smoothly along the inner walls of the side plate and the fixing ring groove 4.

[0032] Reference Figure 1 , Figure 2 and Figure 3The side panel of the housing 1 is also provided with a locking element 5, which is used to lock the push rod 32 in a position close to the bottom plate, thereby locking the fixing frame 2 in the fixing ring groove 4. In this embodiment, the number of locking elements 5 is preferably 4, and the 4 locking elements 5 are respectively provided on the 4 side panels of the housing 1. The push rod 32 is provided with a toggle block 321, which is generally a metal rod and is perpendicularly connected to the push rod 32.

[0033] Reference Figure 2 The outer wall of the side panel of the housing 1 is provided with a sliding groove 11 for sliding the actuating block 321. The shape of the sliding groove 11 is adapted to the actuating block 321, and the actuating block 321 can slide freely in the sliding groove 11. By actuating the actuating block 321, the push rod 32 can be moved, thereby controlling the extension and retraction of the fixed frame 2.

[0034] Reference Figure 2 and Figure 3 The locking element 5 includes a locking block 51 slidably disposed on the side plate of the housing 1 and a locking spring 52 disposed on the locking block 51. The locking spring 52 has a tendency to drive the locking block 51 into the sliding groove 11. The locking block 51 is provided with a guide slope 511, which is used to guide the locking block 51 out of the sliding groove 11.

[0035] Reference Figure 2 and Figure 3 When the toggle block 321 slides down, it pushes the locking block 51 along the guide slope 511, causing the locking block 51 to overcome the elastic force of the locking spring 52 and move out of the sliding groove 11. Then, after the toggle block 321 slides to the bottom, the locking block 51 slides back into the sliding groove 11 under the action of the locking spring 52, thereby locking the fixed frame 2.

[0036] Reference Figure 3 The push rod 32 includes a fixed part 322 and a movable part 323, and a support spring 324 is provided between the fixed part 322 and the movable part 323. The fixed part 322 and the movable part 323 can be a sleeve structure, the movable part 323 can slide within the fixed part 322, and the support spring 324 is located between the two.

[0037] Reference Figure 1 , Figure 2 and Figure 3 The support spring 324 is designed so that when the box 1 is placed at the bottom, the support spring 324 can be compressed when the fixing frame 2 of the upper box 1 is inserted into the fixing ring groove 4 of the bottom box 1. This allows the movable part 323 of the push rod 32 to move down, making room for the fixing frame 2 to extend into the fixing ring groove 4. It also prevents the fixing frame 2 of the upper box 1 from being blocked from extending into the fixing ring groove 4 of the bottom box 1 due to the fixing frame 2 of the bottom box 1 touching the ground.

[0038] Reference Figure 2 The side panel of the housing 1 has a mounting groove 12 for sliding the locking block 51. The shape of the mounting groove 12 is adapted to the locking block 51, allowing the locking block 51 to slide smoothly within the mounting groove 12. The locking block 51 has an unlocking protrusion 512, which is located on the side of the locking block 51 away from the side panel of the housing 1 and is situated within the side panel of the housing 1. By pushing the unlocking protrusion 512, the locking block 51 can be easily moved out of the sliding groove 11, thus unlocking the device.

[0039] Reference Figure 2 The side plate of the housing 1 has a receiving groove 13, and a support rod 6 is rotatably mounted on the groove wall of the receiving groove 13. The support rod 6 can rotate towards or away from the bottom plate. The support rod 6 includes a connecting part 61 and an extension part 62. The connecting part 61 is rotatably mounted on the groove wall of the receiving groove 13, and the extension part 62 is rotatably mounted at one end of the connecting part 61.

[0040] Reference Figure 2 The connecting part 61 and the extension part 62 are generally metal rod-shaped structures, which are connected by a pivot, allowing the extension part 62 to rotate relative to the connecting part 61. When the support rod 6 rotates to the appropriate position, it can support and stabilize the box 1.

[0041] Reference Figure 2 and Figure 3 In this embodiment, the number of support rods 6 is preferably four, and the four support rods 6 are respectively arranged on the four side plates of the housing 1, so that the housing 1 can be supported by any one of the support rods 6. The connecting part 61 is provided with a limiting protrusion 611. When the support rod 6 is rotated to the position away from the bottom plate, the limiting protrusion 611 abuts against the groove wall of the receiving groove 13. The limiting protrusion 611 can prevent the support rod 6 from rotating excessively and ensure that the support rod 6 is in a proper support position.

[0042] The implementation principle of a modular energy metering box according to this application embodiment is as follows: During transportation, when energy metering boxes need to be stacked, the fixing frame 2 is inserted into the fixing ring groove 4 of the lower box 1 from top to bottom by moving the actuating block 321, thus achieving a fixed connection between the boxes 1 and enhancing the stability of the stack. At the same time, the support rod 6 is rotated to a suitable position to provide support and further improve stability. When stacking is no longer needed, the operation is reversed, the fixing frame 2 is retracted, and the support rod 6 is stored in the receiving groove 13 for easy unloading. This solves the problem of slippage and damage caused by unstable stacking of existing energy metering boxes during logistics transportation, reduces the risk of damage to internal electrical components, improves the reliability and service life of the metering box, reduces after-sales maintenance costs, and ensures the operational safety of the smart grid.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A modular energy metering box, comprising a box body (1), electrical components disposed within the box body (1), and cables connecting the electrical components, characterized in that: It also includes a fixed frame (2) that is slidably set on the bottom plate of the box (1) and an adjustment module (3) set on the box (1). The adjustment module (3) is used to control the fixed frame (2) to extend out of the bottom plate of the box (1) when the boxes (1) are stacked. The side plate of the box (1) is also provided with a fixed ring groove (4) for the fixed frame (2) to extend into.

2. The modular energy metering box according to claim 1, characterized in that: The adjustment module (3) includes a connecting spring (31) disposed on the fixed frame (2) and a push rod (32) disposed on the side of the fixed frame (2) away from the bottom plate. The connecting spring (31) has a tendency to drive the fixed frame (2) away from the bottom plate of the box (1). The push rod (32) is slidably disposed in the side plate of the box (1) and the fixing ring groove (4). The side plate of the box (1) is also provided with a locking member (5), which is used to lock the push rod (32) in a position close to the bottom plate.

3. A modular energy metering box according to claim 2, characterized in that: The push rod (32) is provided with a toggle block, and the outer wall of the side plate of the housing (1) is provided with a sliding groove (11) for the toggle block to slide.

4. A modular energy metering box according to claim 3, characterized in that: The locking element (5) includes a locking block (51) slidably disposed on the side plate of the housing (1) and a locking spring (52) disposed on the locking block (51). The locking spring (52) has a tendency to drive the locking block (51) into the sliding groove (11). The locking block (51) is provided with a guide slope (511) for guiding the locking block (51) to move out of the sliding groove (11).

5. A modular energy metering box according to claim 4, characterized in that: The push rod (32) includes a fixed part (322) and a movable part (323), and a support spring (324) is provided between the fixed part (322) and the movable part (323).

6. A modular energy metering box according to claim 4, characterized in that: The side plate of the housing (1) is provided with an installation groove (12) for sliding the locking block (51). The locking block (51) is provided with an unlocking protrusion (512). The unlocking protrusion (512) is located on the side of the locking block (51) away from the side plate of the housing (1). The unlocking protrusion (512) is located in the side plate of the housing (1).

7. A modular energy metering box according to claim 1, characterized in that: The side plate of the box (1) is provided with a receiving groove (13). A support rod (6) is rotatably provided on the groove wall of the receiving groove (13). The support rod (6) can rotate towards or away from the bottom plate. The support rod (6) includes a connecting part (61) and an extension part (62). The connecting part (61) is rotatably provided on the groove wall of the receiving groove (13), and the extension part (62) is rotatably provided at one end of the connecting part (61).

8. A modular energy metering box according to claim 7, characterized in that: The connecting part (61) is provided with a limiting protrusion (611). When the support rod (6) is rotated to the position away from the bottom plate, the limiting protrusion (611) abuts against the groove wall of the receiving groove (13).

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