Energy-saving electric energy metering box

Abstract

The invention provides an energy-saving electric energy metering box, and relates to the technical field of electric energy metering equipment, and the energy-saving electric energy metering box comprises a distribution box, the side wall of the distribution box is hinged to a box door, the distribution box is internally provided with a mounting plate, the surface of the mounting plate is provided with a plurality of groups of mounting grooves, and the side wall of the mounting plate is provided with two groups of electrical elements. Clamping grooves are formed in four corners of the electrical element; the quick-dismounting device further comprises a quick-dismounting mechanism, the quick-dismounting mechanism comprises a fixing cylinder, the fixing cylinder is arranged in the clamping groove and fixedly connected with the electrical element, a plurality of sets of slope grooves are formed in the surface of the fixing cylinder, the slope grooves are divided into an upper layer and a lower layer, a sliding block is slidably connected into each set of slope grooves, and a clamping block is arranged on the side wall of each set of sliding block. According to the electric energy metering box, through the quick release mechanism and the adjustable mounting plate system, the limitation of a fixed mounting structure of a traditional electric energy metering box is broken through, and free adjustment of the mounting position of an electrical element and efficient optimal configuration of space resources are achieved.

Description

Technical Field

[0001] This invention relates to the field of electrical energy metering equipment technology, and more specifically, to an energy-saving electrical energy metering box. Background Technology

[0002] In modern power distribution networks, the electricity metering box, as the core equipment for electricity metering and distribution control, undertakes multiple important functions such as electricity meter installation, electricity metering, circuit protection, and switch control. It is a crucial hub connecting the power supply end and the power consumption end. The electricity metering box needs to install various types and specifications of electrical equipment, including single-phase electricity meters, three-phase electricity meters, air switches, residual current devices (RCDs), contactors, relays, terminal blocks, and other electrical components and protection devices. These devices together constitute a complete electricity metering and distribution control system. The types and quantities of electrical equipment required inside the electricity metering box vary depending on the power consumption location, load, and metering requirements. The specifications vary considerably. To ensure the orderly and secure installation of these electrical devices within the metering box, traditional electricity metering boxes typically employ mounting rails or rods as support structures. The most common design involves fixing three horizontally or vertically arranged metal mounting rods to the inner wall of the metering box. These rods are fixed to specific locations on the inner wall of the box using welding, bolting, or other methods, forming a three-tiered installation platform. The mounting boxes or bases for electrical equipment such as electricity meters and switches usually have slots, hooks, or bolt holes on their backs. By hanging or bolting these devices onto the mounting rods, reliable installation of the equipment within the metering box can be achieved.

[0003] However, the existing three-mounting-rod fixed installation structure has significant technical defects. The core problem is that the positions of the mounting rods are completely fixed and cannot be adjusted, making it unable to adapt to the flexible installation needs of different specifications of electrical equipment. This restricts the efficient use of internal space in the electricity metering box and the optimized configuration of equipment layout. Since these mounting rods are permanently fixed to specific positions on the inner wall of the box during manufacturing, the spacing between the three mounting rods is constant. It is usually designed and determined according to the size of a commonly used specification of electricity meter or switch equipment. Although this "one-size-fits-all" fixed spacing design can meet the installation requirements of standard specification equipment, it will expose the problem of insufficient adaptability when different sizes and specifications of electrical equipment need to be installed. This results in the waste of valuable internal space in the metering box, creating a contradictory situation of "having space but not being able to use it, and wanting to use space but not having it." Too large or too small a spacing between equipment not only affects the heat dissipation and ventilation effect and electrical safety distance of the equipment, but also brings many inconveniences to daily operation, maintenance, inspection and replacement. Summary of the Invention

[0004] (a) Technical problems to be solved In view of the problems existing in the prior art, the present invention provides an energy-saving electricity metering box to solve the technical problems mentioned in the background art.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: An energy-saving electricity metering box includes a distribution box with a door hinged to its side wall. The distribution box contains an installation plate with multiple sets of mounting grooves on its surface. Two sets of electrical components are located on the side wall of the installation plate, and slots are provided at the four corners of each electrical component. The box also includes a quick-release mechanism, which includes a fixed cylinder fixedly connected to the electrical components within the slots. The fixed cylinder has multiple sets of inclined grooves on its surface, divided into upper and lower layers. A slider is slidably connected within each set of inclined grooves, and a locking block is provided on the side wall of each set of sliders. The locking block is slidably connected to the inclined groove.

[0006] Preferably, a fixing ring is provided at the center of the inner wall of the fixing cylinder, and multiple sets of guide rods adapted to the slider are provided on the upper and lower end faces of the fixing ring. The other end of each guide rod is fixedly connected to the inner wall of the fixing cylinder, and each set of sliders is slidably connected to the corresponding guide rod.

[0007] Preferably, an unlocking ring is provided above the fixed cylinder, and four sets of thick rods are connected to the lower end face of the unlocking ring, with thin rods connected to the lower end faces of the four sets of thick rods.

[0008] Preferably, the upper part of the fixed cylinder is provided with a first vertical groove and a second vertical groove, the thick rod is slidably connected to the first vertical groove, and the thin rod is slidably connected to the second vertical groove.

[0009] Preferably, the fixed cylinder has four sets of first horizontal grooves inside, and four sets of second horizontal grooves below the first horizontal grooves. The first horizontal grooves correspond to the first vertical grooves, and the second horizontal grooves correspond to the second vertical grooves. The first horizontal grooves and the second horizontal grooves are all provided with rounded corners near the axis.

[0010] Preferably, a first limiting ring is provided in the first transverse groove, a first unlocking rod is slidably connected in the first transverse groove, the first unlocking rod is slidably connected to the first limiting ring, a first compression spring is sleeved on the outer wall of the first unlocking rod, one end of the first compression spring is fixedly connected to the side wall of the first unlocking rod, and the other end is fixedly connected to the side wall of the first limiting ring, and the first unlocking rod is adapted to the thick rod.

[0011] Preferably, a second limiting ring is provided in the second transverse groove, a second unlocking rod is slidably connected in the second transverse groove, the second unlocking rod is slidably connected to the second limiting ring, a second compression spring is sleeved on the outer wall of the second unlocking rod, one end of the second compression spring is fixedly connected to the side wall of the second unlocking rod, and the other end is fixedly connected to the side wall of the second limiting ring, and the second unlocking rod is adapted to the thin rod.

[0012] Preferably, the fixed cylinder is rotatably connected to a tapered rod, the surface of which is provided with an upper threaded groove and a lower threaded groove, each with twelve grooves. The number of upper sets of sliders is the same as the number of upper threaded grooves, and the number of lower sets of sliders is the same as the number of lower threaded grooves.

[0013] Preferably, the upper end face of the tapered rod is provided with a locking rod, the upper end face of the locking rod is provided with a hexagonal block, the lower end face of the tapered rod is provided with an insert rod, and both the locking rod and the insert rod are rotatably connected to the inner side wall of the fixed cylinder. Preferably, the surface of the locking rod has multiple sets of fixing grooves corresponding to the first and second horizontal grooves. A fixing block is slidably connected in the fixing groove. A push spring is connected to the side wall of the fixing block. The other end of the push spring is fixedly connected to the inner side wall of the fixing groove. The other side wall of the upper fixing block abuts against the side wall of the first unlocking rod, and the other side wall of the lower fixing block abuts against the side wall of the second unlocking rod.

[0014] (III) Beneficial Effects Compared with existing technologies, this invention provides an energy-saving electricity metering box with the following advantages: This invention, through a quick-release mechanism and an adjustable mounting plate system, overcomes the limitations of the traditional fixed installation structure of electricity metering boxes. It achieves free adjustment of the installation position of electrical components and efficient optimization of space resources, enhancing the versatility and practical value of the electricity metering box. Traditional electricity metering boxes use a rigid structure with three fixed mounting rods. Once the position of the mounting rods is determined, it cannot be changed, and electrical equipment can only be installed according to a preset fixed spacing. This "one-size-fits-all" design results in a large waste of internal space and cannot adapt to the diverse installation needs of different specifications of equipment. In contrast, this invention has multiple mounting slots on the mounting plate. Workers can flexibly select appropriate mounting slot positions for equipment installation based on the actual size, quantity, and functional requirements of the electrical components to be installed. This modular and freely combinable method optimizes the use of the internal space of the metering box.

[0015] When installing small single-phase electricity meters, dense installation can be achieved by choosing locations with smaller spacing between mounting slots, allowing for a greater number of meters to be installed within the limited cabinet height, thus increasing equipment installation density. Conversely, when installing large three-phase electricity meters or large circuit breakers, locations with larger spacing between mounting slots can be chosen, reserving ample installation space and safety distances for large equipment, ensuring stable installation and safe operation. This on-demand, flexible installation method allows the same model of electricity metering box to adapt to different application scenarios, from small-capacity residential electricity to large-capacity industrial electricity. One box can meet multiple specification requirements, eliminating the need to design and manufacture multiple dedicated metering boxes of different specifications for different application scenarios, reducing product complexity and manufacturing costs. More importantly, through… By rationally planning the location of the installation slots, the internal space of the metering box can be fully utilized, avoiding the large areas of wasted space commonly found in traditional fixed structures. This allows for the installation of more electrical equipment within the same box volume, or the use of a smaller box size while meeting the same equipment installation requirements. This is of practical significance for applications such as the renovation of old residential areas with limited installation space and the construction of power distribution networks in dense urban areas. At the same time, flexible installation location selection also facilitates the optimization of the heat dissipation layout and electrical connection paths of the equipment inside the box. Equipment with high heat generation can be distributed to improve heat dissipation conditions, and electricalally closely related equipment can be installed close together to shorten connection lines. These optimization measures all help improve the overall performance and operational reliability of the electricity metering box, extend the service life of the equipment, and reduce the failure rate and maintenance costs.

[0016] This invention designs a mechanical quick-release locking mechanism that organically combines rapid installation and disassembly with anti-theft locking. This ensures that only authorized personnel can install and disassemble electrical components, effectively preventing illegal electricity theft and equipment theft. It also simplifies the operational process for legitimate maintenance, improving maintenance efficiency. Traditional electricity metering boxes typically use bolt fixing, which, while reliable, is cumbersome and time-consuming, requiring the use of wrenches and other tools to tighten or loosen multiple bolts individually. Disassembling a single device can often take ten minutes or more, and repeated disassembly and assembly can cause thread wear and bolt stripping, reducing the reliability of the fixation. This invention employs an anti-theft design using an unlocking ring combined with a special internal unlocking mechanism. The unlocking ring is a specialized tool with two rods of different thicknesses at its base, corresponding to the first and second vertical slots inside the metering box. Only when these two rods are simultaneously and accurately inserted into their corresponding slots and push the first and second unlocking rods towards the axis can the lock be secured. Only when the device is activated can the fixed block retract from the transverse groove, releasing the locking lever. Only then can the hexagonal block be rotated to drive the tapered rod, which in turn moves the slider and locking block, enabling the installation or removal of electrical components. This double-security mechanical unlocking design ensures anti-theft security. For authorized personnel, the mechanism offers an extremely convenient and efficient operating method. Personnel simply insert the special unlocking ring into the corresponding slot and then use a standard Allen wrench to rotate the hexagonal block. The threaded groove on the tapered rod surface drives the upper and lower sliders to move synchronously, thereby pushing the locking block out or retracting. The entire operation is significantly more efficient than traditional bolt-fixing methods. The design of using threaded grooves to drive the slider movement ensures that all upper and lower sliders maintain horizontal synchronous movement, avoiding the problem of locking block tilting and jamming caused by unilateral movement. This ensures smoothness and reliability in every operation. The rounded corner design at the transverse groove corners also effectively prevents the fixed block from being jammed by sharp corners when the locking lever rotates, further enhancing the smoothness of the mechanism's movement. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an energy-saving electricity metering box according to the present invention; Figure 2 This is a schematic diagram of the mounting plate and electrical components in this invention; Figure 3 This is a schematic diagram of the electrical components in this invention; Figure 4 This is a schematic diagram of the structure of the fixed cylinder and hexagonal block in this invention; Figure 5 In this invention Figure 4 A schematic diagram of the cross-sectional structure; Figure 6 In this invention Figure 4 A schematic diagram of the exploded structure; Figure 7 This is a schematic diagram of the unlocking ring and the thick rod in this invention; Figure 8 This is a cross-sectional view of the tapered rod and locking rod in this invention; Figure 9 This is a cross-sectional view of the fixed cylinder and slider in this invention.

[0018] In the diagram: 11. Distribution box; 12. Box door; 13. Mounting plate; 14. Mounting slot; 15. Electrical component; 16. Slot; 21. Fixing cylinder; 22. Angled slot; 23. Slider; 24. Locking block; 25. Fixing ring; 26. Guide rod; 27. Unlocking ring; 28. Thick rod; 29. ​​Thin rod; 210. First vertical slot; 211. Second vertical slot; 212. First horizontal slot; 213. Second horizontal slot ; 214, rounded corner; 215, first limiting ring; 216, first unlocking rod; 217, first compression spring; 218, second limiting ring; 219, second unlocking rod; 220, second compression spring; 221, tapered rod; 222, upper threaded groove; 223, lower threaded groove; 224, locking rod; 225, hexagonal block; 226, insertion rod; 227, fixing groove; 228, fixing block; 229, push spring. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0021] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0022] Please see Figures 1-9An energy-saving electricity metering box includes a distribution box 11, with a door 12 hinged to the side wall of the distribution box 11. An installation plate 13 is provided inside the distribution box 11, with multiple sets of installation grooves 14 on the surface of the installation plate 13. Two sets of electrical components 15 are provided on the side wall of the installation plate 13, with slots 16 at the four corners of the electrical components 15. The box also includes a quick-release mechanism, comprising a fixed cylinder 21, which is fixedly connected to the electrical components 15 within the slots 16. Multiple sets of inclined grooves 22 are provided on the surface of the fixed cylinder 21, which are divided into upper and lower layers. A slider 23 is slidably connected within each set of inclined grooves 22, and a locking block 24 is provided on the side wall of each set of sliders 23. The locking block 24 is slidably connected to the inclined groove 22. A fixing ring 25 is provided at the center of the inner side wall of the fixed cylinder 21. The upper and lower ends of the fixed ring 25 are provided with multiple sets of guide rods 26 that are adapted to the sliders 23. The other ends of the guide rods 26 are fixedly connected to the inner side wall of the fixed cylinder 21. Each set of sliders 23 is slidably connected to the corresponding guide rod 26. The upper part of the fixed cylinder 21 is provided with an unlocking ring 27. The lower end of the unlocking ring 27 is connected to four sets of thick rods 28. The lower end of the four sets of thick rods 28 is connected to thin rods 29. The upper part of the fixed cylinder 21 is provided with a first vertical groove 210 and a second vertical groove 211. The thick rods 28 are slidably connected to the first vertical groove 210, and the thin rods 29 are slidably connected to the second vertical groove 211. The inside of the fixed cylinder 21 is provided with four sets of first horizontal grooves 212. Below the first horizontal grooves 212 are four sets of second horizontal grooves 213. The first horizontal grooves 212 correspond to the first vertical grooves 210, and the second horizontal grooves 213 correspond to the first vertical grooves 210. Corresponding to the second vertical groove 211, both the first horizontal groove 212 and the second horizontal groove 213 have rounded corners 214 near the axis. A first limiting ring 215 is provided inside the first horizontal groove 212. A first unlocking rod 216 is slidably connected inside the first horizontal groove 212, and the first unlocking rod 216 is slidably connected to the first limiting ring 215. A first compression spring 217 is sleeved on the outer wall of the first unlocking rod 216. One end of the first compression spring 217 is fixedly connected to the side wall of the first unlocking rod 216, and the other end is fixedly connected to the side wall of the first limiting ring 215. The first unlocking rod 216 is adapted to the thick rod 28. A second limiting ring 218 is provided inside the second horizontal groove 213, and a second unlocking rod 219 is slidably connected inside the second horizontal groove 213, and the second unlocking rod 219 is slidably connected to the second limiting ring 218. A second compression spring 220 is fitted on the outer wall of the second unlocking rod 219. One end of the second compression spring 220 is fixedly connected to the side wall of the second unlocking rod 219, and the other end is fixedly connected to the side wall of the second limiting ring 218. The second unlocking rod 219 is adapted to the thin rod 29. A tapered rod 221 is rotatably connected to the fixed cylinder 21. The surface of the tapered rod 221 has an upper threaded groove 222 and a lower threaded groove 223, with twelve grooves in each groove. The number of upper sliders 23 is the same as the number of upper threaded grooves 222, and the number of lower sliders 23 is the same as the number of lower threaded grooves 223. A locking rod 224 is provided on the upper end face of the tapered rod 221, and a hexagonal block 225 is provided on the upper end face of the locking rod 224. An insert rod 226 is provided on the lower end face of the tapered rod 221.Both the locking rod 224 and the insertion rod 226 are rotatably connected to the inner wall of the fixed cylinder 21. The surface of the locking rod 224 has multiple sets of fixing grooves 227 corresponding to the first horizontal groove 212 and the second horizontal groove 213. A fixing block 228 is slidably connected within the fixing groove 227. A push spring 229 is connected to the side wall of the fixing block 228, and the other end of the push spring 229 is fixedly connected to the inner wall of the fixing groove 227. The other side wall of the upper fixing block 228 abuts against the side wall of the first unlocking rod 216, and the other side wall of the lower fixing block 228 abuts against the side wall of the second unlocking rod 219.

[0023] In this invention, the electrical component 15 to be installed can be installed in the mounting slot 14 of the mounting plate 13 via a quick-release mechanism according to actual needs. This allows for selection of a suitable installation position based on the size of the electrical component 15, improving space utilization. Simultaneously, the unlocking ring 27 can only be held by a worker; without it, the electrical component 15 cannot be installed or removed. Therefore, only a worker can install or remove the electrical component 15. Initially, the slider 23 and the corresponding locking block 24 are retracted within the inclined groove 22. When a set of electrical components 15 needs to be installed, the worker needs to insert the thick rod 28 and thin rod 29 below the unlocking ring 27 into the corresponding first vertical slot 210 and... Inside the second vertical groove 211, the thicker rod 28 can push the first unlocking rod 216 to move along the first horizontal groove 212 toward the axis position, stretching the first compression spring 217. The first unlocking rod 216 pushes the corresponding fixing block 228 backward, compressing the corresponding push spring 229. The thinner rod 29 pushes the second unlocking rod 219 to move along the second horizontal groove 213 toward the axis position, stretching the second compression spring 220. The second unlocking rod 219 pushes the corresponding fixing block 228 backward, compressing the corresponding push spring 229. At this time, all fixing blocks 228 are retracted into the fixing groove 227, and the hexagonal block 225 can be rotated by an external tool. The hexagonal block 225 drives the locking rod 224 below and the conical... Rod 221 and insert rod 226 rotate synchronously. The rounded corners 214 of the first horizontal groove 212 and the second horizontal groove 213 are designed to prevent the fixing block 228 from being stuck when it rotates with the locking rod 224. The tapered rod 221 rotates, and driven by the upper threaded groove 222 and the lower threaded groove 223, the upper and lower sliders 23 move towards each other along the corresponding upper threaded groove 222 and lower threaded groove 223. When they move to the end with the larger diameter of the inclined groove 22, the locking block 24 is pushed out of the inclined groove 22 and abuts against the rear side wall of the mounting plate 13. After the locking block 24 is fully extended, the rotation of the hexagonal block 225 stops. The worker then pulls the unlocking ring 27, along with the thick rod 28 and the thin rod 29, out of the first vertical groove 226. 10. In the second vertical groove 211, the first compression spring 217 and the second compression spring 220 rebound, driving the corresponding first unlocking rod 216 and the second unlocking rod 219 to reset. The push spring 229 rebounds, driving the fixing block 228 to reset. At this time, multiple sets of fixing blocks 228 are inserted into the corresponding first horizontal groove 212 or second horizontal groove 213 again to fix the locking rod 224, thereby realizing the snap-fit ​​fixing of the electrical component 15. The number of upper threaded grooves 222 and lower threaded grooves 223 is the same as the number of corresponding sliders 23 so that when the tapered rod 221 rotates, each set of upper sliders 23 is always in a horizontal synchronous movement state, and each set of lower sliders 23 is also always in a horizontal synchronous movement state. When it is necessary to disassemble a set of electrical components 15, the worker inserts the unlocking ring 27 along with the thick rod 28 and thin rod 29 below it into the corresponding first vertical groove 210 and second vertical groove 211. The thick rod 28 pushes the first unlocking rod 216 toward the axis position, thereby pushing the corresponding fixing block 228 backward. The thin rod 29 pushes the second unlocking rod 219 toward the axis position, thereby pushing the corresponding fixing block 228 backward. At this time, all fixing blocks 228 are put into the fixing groove 227. The worker uses an external tool to rotate the hexagonal block 225 in the opposite direction, thereby driving the tapered rod 221 to drive the upper and lower sliders 23 to slide toward the smaller diameter end of the inclined groove 22, thereby driving the locking block 24 to retract into the inclined groove 22, releasing the locking state with the side wall of the mounting plate 13. Then, the unlocking ring 27 is pulled out, and the fixing cylinder 21 is pulled out of the mounting groove 14, thereby realizing the removal of electrical components 15.

[0024] In all the solutions mentioned above, for connections between two components, welding, bolt and nut connection, bolt or screw connection, or other known connection methods can be selected according to the actual situation. They will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. In all the solutions mentioned above, those involving the operation of electrical components, unless otherwise specified, are controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies, and their electrical connection relationships and specific circuit structures will not be elaborated here. Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing known technologies and will not be elaborated upon in this invention. Of all the solutions mentioned above, those involving the connection between solar panels and batteries can be equipped with essential accessories such as inverters, battery charging controllers, cables, fuses, and brackets. Their control principles and circuit connections are all existing, well-known, and mature technologies, so their electrical connection relationships and specific circuit structures will not be elaborated here.

Claims

1. An energy-saving electricity metering box, comprising a distribution box (11), characterized in that: The distribution box (11) is hinged to a door (12) on its side wall. The distribution box (11) is provided with an installation plate (13). The surface of the installation plate (13) has multiple sets of installation grooves (14). The side wall of the installation plate (13) is provided with two sets of electrical components (15). The electrical components (15) have slots (16) at their four corners. The distribution box (11) also includes a quick-release mechanism. The quick-release mechanism includes a fixed cylinder (21). The fixed cylinder (21) is located in the slot (16) and fixedly connected to the electrical components (15). The surface of the fixed cylinder (21) has multiple sets of inclined grooves (22). The inclined grooves (22) are divided into upper and lower layers. Each set of inclined grooves (22) is slidably connected to a slider (23). Each set of sliders (23) has a locking block (24) on its side wall. The locking block (24) is slidably connected to the inclined groove (22).

2. The energy-saving electricity metering box according to claim 1, characterized in that: A fixing ring (25) is provided at the center of the inner wall of the fixing cylinder (21). The upper and lower surfaces of the fixing ring (25) are provided with multiple sets of guide rods (26) that are adapted to the slider (23). The other end of the guide rod (26) is fixedly connected to the inner wall of the fixing cylinder (21). Each set of sliders (23) is slidably connected to the corresponding guide rod (26).

3. The energy-saving electricity metering box according to claim 2, characterized in that: The fixed cylinder (21) is provided with an unlocking ring (27) above it. The lower end face of the unlocking ring (27) is connected to four sets of thick rods (28), and the lower end face of the four sets of thick rods (28) is connected to thin rods (29).

4. The energy-saving electricity metering box according to claim 3, characterized in that: The upper part of the fixed cylinder (21) is provided with a first vertical groove (210) and a second vertical groove (211). The thick rod (28) is slidably connected to the first vertical groove (210), and the thin rod (29) is slidably connected to the second vertical groove (211).

5. The energy-saving electricity metering box according to claim 4, characterized in that: The fixed cylinder (21) has four sets of first horizontal grooves (212) inside, and four sets of second horizontal grooves (213) below the first horizontal grooves (212). The first horizontal grooves (212) correspond to the first vertical grooves (210), and the second horizontal grooves (213) correspond to the second vertical grooves (211). The first horizontal grooves (212) and the second horizontal grooves (213) are both provided with rounded corners (214) near the axis.

6. The energy-saving electricity metering box according to claim 5, characterized in that: The first transverse groove (212) is provided with a first limiting ring (215), and a first unlocking rod (216) is slidably connected in the first transverse groove (212). The first unlocking rod (216) is slidably connected to the first limiting ring (215). A first compression spring (217) is sleeved on the outer wall of the first unlocking rod (216). One end of the first compression spring (217) is fixedly connected to the side wall of the first unlocking rod (216), and the other end is fixedly connected to the side wall of the first limiting ring (215). The first unlocking rod (216) is adapted to the thick rod (28).

7. The energy-saving electricity metering box according to claim 6, characterized in that: The second transverse groove (213) is provided with a second limiting ring (218), and a second unlocking rod (219) is slidably connected in the second transverse groove (213). The second unlocking rod (219) is slidably connected to the second limiting ring (218). A second compression spring (220) is sleeved on the outer wall of the second unlocking rod (219). One end of the second compression spring (220) is fixedly connected to the side wall of the second unlocking rod (219), and the other end is fixedly connected to the side wall of the second limiting ring (218). The second unlocking rod (219) is adapted to the thin rod (29).

8. The energy-saving electricity metering box according to claim 7, characterized in that: The fixed cylinder (21) is rotatably connected to a tapered rod (221). The tapered rod (221) has an upper threaded groove (222) and a lower threaded groove (223) on its surface. There are twelve upper threaded grooves (222) and twelve lower threaded grooves (223). The number of upper sets of sliders (23) is the same as the number of upper threaded grooves (222), and the number of lower sets of sliders (23) is the same as the number of lower threaded grooves (223).

9. An energy-saving electricity metering box according to claim 8, characterized in that: The upper end face of the tapered rod (221) is provided with a locking rod (224), the upper end face of the locking rod (224) is provided with a hexagonal block (225), the lower end face of the tapered rod (221) is provided with an insertion rod (226), and both the locking rod (224) and the insertion rod (226) are rotatably connected to the inner wall of the fixed cylinder (21).

10. An energy-saving electricity metering box according to claim 9, characterized in that: The locking rod (224) has multiple sets of fixing grooves (227) corresponding to the first horizontal groove (212) and the second horizontal groove (213) on its surface. A fixing block (228) is slidably connected in the fixing groove (227). A push spring (229) is connected to the side wall of the fixing block (228). The other end of the push spring (229) is fixedly connected to the inner side wall of the fixing groove (227). The other side wall of the upper fixing block (228) abuts against the side wall of the first unlocking rod (216), and the other side wall of the lower fixing block (228) abuts against the side wall of the second unlocking rod (219).

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