A wiring stable electric energy metering box and a wiring method

Abstract

The application relates to a wiring-stable electric energy metering box and a wiring method, and relates to the technical field of smart grids. The electric energy metering box comprises a box body, two box doors rotatably installed on the front side of the box body, a plurality of heat dissipation openings formed in the lower parts of the left and right side surfaces of the box body, and two wiring openings formed on the bottom surface of the box body. Two clamping plates are rotatably installed on the left and right edges of the bottom wall of the box body. The rotating surfaces of the clamping plates are parallel to the bottom wall of the box body. The sides of the two clamping plates, which are away from each other, are limiting surfaces. The limiting surfaces are provided with abutting inclined surfaces close to the edges of the left and right side walls of the box body. The two clamping plates can be turned towards each other to a clamping state of abutting each other, and can be turned away from each other to a wiring state of abutting the abutting surfaces with the inner wall of the box body. A locking piece is arranged outside the box body. Clamping gaps are formed in the two clamping plates. Elastic pads are fixedly arranged on the inner walls of the clamping gaps. In the application, the defect that the large-aperture wiring opening of a traditional metering box cannot limit the cable is effectively solved.

Description

Technical Field

[0001] This application relates to the technical field of smart grids, and in particular to a stable power metering box and wiring method. Background Technology

[0002] In smart grid distribution systems, wall-mounted energy metering boxes serve as key supporting equipment for distribution terminals, undertaking the functions of metering user electricity consumption, protecting line continuity, and transferring power. They are widely used in residential communities, street-front shops, and outdoor transformer substations. These boxes are installed on-site by wall mounting, integrating metering and overload protection components, and act as an intermediate carrier connecting household cables to public power distribution lines. With the large-scale implementation of distribution network projects, the proportion of outdoor metering boxes continues to increase. The complex outdoor climate and wind conditions place stringent requirements on the protection of box wiring and the durability of cables. Therefore, the protective design of cable and box wiring connections has gradually become a key research direction for the structural optimization of metering boxes.

[0003] The existing wall-mounted electricity metering box mainly consists of a box body, a door, and built-in electrical components. The door is hinged to the front of the box body for opening and closing protection. The back of the box body serves as the fixed installation reference surface, with a pre-drilled wiring port on the bottom and ventilation openings on the left and right side walls. The internal components include an electricity meter, circuit breaker, fuse, and other power distribution accessories. During assembly, various electrical components are first pre-installed and fixed to the rear wall of the box body using screws. Then, expansion bolts are used to secure the entire box to the wall, strictly controlling the installation height of the box from the ground. External power supply cables pass through the wiring port at the bottom of the box body and are connected to the internal electrical components one by one. The ventilation openings on the side walls continuously dissipate the heat generated by the components during operation, ensuring the stable daily operation of the box.

[0004] Existing metering boxes generally use a large inner diameter design for the bottom connection port to facilitate the simultaneous connection of multiple external cables. However, this structure exposes significant defects under outdoor wind conditions. A long exposed section remains after the cable exits the connection port. Continuous strong winds cause the exposed cable to swing back and forth irregularly, with the cable's outer wall constantly rubbing against the sharp edge of the connection port and the inner wall of the hole. Long-term reciprocating friction can easily cause damage and cracking of the cable's outer insulation. This can lead to reduced insulation and leakage hazards, or even core wire breakage and short circuits, affecting normal power supply and potentially causing electric shock, fires, and other safety accidents. Therefore, there is room for improvement. Summary of the Invention

[0005] The purpose of this application is to provide a stable power metering box and wiring method, which solves the problem in the above-mentioned related technologies that the outer periphery of the external cable attached to the inner wall of the connection port is easily affected by strong winds and frequently swings, resulting in wear of the insulation sheath and potential safety hazards such as leakage, short circuit and fire.

[0006] Firstly, the electrical energy metering box with stable wiring provided in this application adopts the following technical solution: A stable power metering box includes a box body and two doors rotatably mounted on the front side of the box body. Several heat dissipation vents are provided on the lower part of the left and right sides of the box body, and two wiring ports are provided on the bottom surface. Two clamping plates are rotatably mounted on the left and right edges of the bottom wall of the box body. The rotating surfaces of the clamping plates are parallel to the bottom wall of the box body. The sides of the two clamping plates that are far apart from each other are limiting surfaces, and abutting slopes are provided near the edges of the left and right side walls of the box body near the limiting surfaces. The two clamping plates can rotate towards each other to a clamping state and away from each other to a wiring state where the abutting surfaces abut against the inner wall of the box body. Locking elements are provided on the outside of the box body to limit and fix the two clamping plates in the clamping and wiring states. Clamping notches are provided on the sides of the two clamping plates that are close to each other, and elastic pads are fixed on the inner walls of the clamping notches. The two opposing clamping notches form a clamping cavity coaxial with the wiring ports when the two clamping plates are clamped.

[0007] By adopting the above technical solution, two sets of switchable clamping plates are rotatably installed on the bottom wall of the box. Combined with locking components, this allows for flexible switching between the wiring and clamping states of the clamping plates, effectively solving the defect of traditional metering boxes where large-diameter wiring ports cannot restrict cable movement. During wiring operations, the clamping plates switch to the wiring state and are fixed in place, completely avoiding the wiring port and ensuring that multiple external cables can smoothly pass through the box without affecting wiring efficiency. After wiring is completed, the two sets of clamping plates rotate in opposite directions and close, with the clamping notches on both sides forming a clamping cavity coaxial with the wiring port. This, along with the inner wall elastic pad, tightly covers the outer wall of the cable. Utilizing the elastic pressing performance of the elastic pad, the cable at the threading position can be clamped and fixed in all directions, effectively limiting the reciprocating swing of the cable in strong winds outdoors, eliminating the problem of long-term friction between the cable and the sharp edge of the wiring port, and avoiding safety hazards such as cable insulation damage, leakage, short circuits, and fires. This significantly improves the stability of cable wiring and the safety of outdoor power distribution operations, demonstrating strong structural adaptability and practicality.

[0008] Optionally, a first slot is provided on the top surface of each of the two clamping plates, and a second slot with the same number of slots is provided on the bottom wall of the housing. The positions of the first slot and the second slot coincide in the vertical direction when the two clamping plates are clamped. The locking component includes a locking plate located horizontally below the housing, and a locking rod is fixed at each of the four corners of the top surface of the locking plate. A clearance hole for the locking rod to pass through is provided on the bottom wall of the housing. A locking hook located inside the housing is fixed on the upper end surface of the locking rod. When the two clamping plates are clamped, the locking hook can move down with the locking rod and engage in the first slot. When the two clamping plates are in the wiring state, the locking hook can move down with the locking rod and engage in the second slot. The sides of the upper ends of the two locking rods that are far apart from each other abut against the sides of the two clamping plates that are close to each other when the locking hook engages in the second slot.

[0009] By adopting the above technical solution, when the clamping plate is in the clamping state, the locking hook engages with the first slot, firmly locking the clamping plate in its closed position and ensuring the stability of the cable clamping structure. When the clamping plate switches to the wiring state, the locking hook engages with the second slot, and simultaneously, the side wall of the locking rod presses against the clamping plate, bidirectionally limiting and fixing the clamping plate in its open state, preventing the clamping plate from rotating arbitrarily during cable threading and interfering with the wiring. This structure is simple in design, highly interconnected, and can quickly complete the locking process without the need for additional fixing accessories, significantly improving the equipment's adjustment efficiency and operational stability.

[0010] Optionally, a first inclined surface is provided at the outer edge of the lower end face of the locking hook.

[0011] By adopting the above technical solution, during the process of locking the locking plate driving the locking rod to move vertically to complete the locking, the first inclined surface can adaptively guide the locking hook, so that the locking hook can smoothly slide into the first slot or the second slot without the need for precise manual alignment, thus avoiding the problems of jamming and difficult alignment.

[0012] Optionally, both clamping plates are rotatably connected to the bottom wall of the housing via a rotating shaft. A connecting rod is vertically fixed on the edge of the inclined surface near the rotating shaft. A mounting slot is provided at the lower edge of the left and right sides of the housing for the two connecting rods on the same side to pass through. When the two clamping plates are in the wiring state, the two connecting rods rotate synchronously to abut each other in a side-by-side state. An adjusting rod located outside the housing is fixed on the end face of the connecting rod away from the clamping plate. When the two clamping plates are in the clamping state, the two adjusting rods rotate synchronously to abut the outer side of the housing in a coaxial state.

[0013] By adopting the above technical solution, the connecting rod passes through the mounting slot on the side wall of the enclosure, extending the rotation of the clamping plate to the outside of the enclosure. Operators can directly move the outer adjustment rod to switch the opening and closing state of the clamping plate, completing the switching between wiring and clamping states without opening the enclosure door, making operation convenient and efficient. Simultaneously, in both states, the adjustment rod and the connecting rod can form a regular, coaxial fit, achieving rotational travel limit and preventing excessive rotation and displacement of the clamping plate. This structure avoids the cumbersome operation of traditional enclosures requiring opening for adjustment, shortens construction and debugging time, and is suitable for outdoor rapid wiring and maintenance scenarios.

[0014] Optionally, protective plates are rotatably mounted on the lower left and right sides of the housing. The rotating surfaces of the two protective plates are parallel to the front side of the housing. The protective plates can rotate upwards to a horizontally unfolded state above the adjusting rod and downwards to a vertically blocking state that seals the opening of the mounting slot. When the protective plates are in the horizontally unfolded state, a clearance notch is provided on the bottom surface, and a positioning slot is provided on the vertical side of the locking rod near the protective plates. When the protective plates are in the vertical blocking state, a middle plate is detachably mounted on the bottom surface. At this time, two elastic positioning rods with elastic elongation properties are fixed horizontally on the side of the middle plate near the locking plate. When the two clamping plates are clamped and the locking hooks are engaged in the first slot, the two locking plates rotate to the vertical blocking state. At this time, the adjusting rod is engaged in the clearance notch, and the end of the elastic positioning rod is engaged in the positioning slot.

[0015] By adopting the above technical solution, the protective plate can flexibly switch between horizontal deployment and vertical blocking states. In the vertical state, it can seal the installation slot, preventing outdoor dust and rainwater from entering the enclosure and protecting the internal transmission structure. Simultaneously, the adjusting rod engages with the clearance notch to achieve a limit, and the elastic positioning rod elastically engages with the locking rod's positioning slot, simultaneously completing the vertical limit of the locking rod and the rotation limit of the protective plate, eliminating the problems of loosening of the locking structure and shaking of the protective plate during equipment operation. This multi-layered limit structure significantly improves the structural stability in the cable clamping state, enhancing the outdoor protection performance of the equipment.

[0016] Optionally, a second inclined surface is provided at the outer edge of the end of the elastic positioning rod away from the intermediate plate.

[0017] By adopting the above technical solution, when the protective plate switches to the vertical blocking state, the second inclined surface can adaptively slide and guide against the positioning slot port, allowing the elastic positioning rod to automatically retract and precisely engage inside the slot, eliminating the need for manual alignment and pressing, thus saving time and effort. Simultaneously, the inclined transition structure reduces the hard impact during engagement, minimizing wear between the elastic positioning rod and the slot, and ensuring the long-term stability of the elastic telescopic structure. This structure improves the smoothness of the equipment's limiting assembly, ensures precise cooperation of multiple limiting structures, and effectively enhances the overall locking reliability of the equipment.

[0018] Optionally, a protective cover is rotatably connected to the left and right sides of the housing. The protective cover can be rotated to a vertically downward protective state, covering the outside of the heat dissipation vent. The front and rear sides of the protective cover have installation openings, and a protective net is fixed to the inner wall of the installation opening. A protruding plate is fixed to the top surface of the end of the adjusting rod away from the connecting rod. A protruding notch is opened on the top surface of the protruding plate. When the protective cover is in the protective state, a vertically downward elastic fixing rod with elastic elongation properties is fixed to the outer edge of the bottom surface. A fixing crossbar is vertically fixed to the end surface of the elastic fixing rod away from the protective cover. The two ends of the fixing crossbar are engaged in the protruding notch when the protective cover is in the protective state and the protective plate is in the vertical blocking state.

[0019] By adopting the above technical solution, when the protective cover closes the heat dissipation vents, it can work in conjunction with the protective net to prevent dust, insects, and rainwater from entering the enclosure, thus balancing component heat dissipation and outdoor protection. Simultaneously, the elastic fixing rod can adaptively extend and retract, causing the fixing crossbar to engage with the protruding notch at the top of the adjusting rod. This provides a secondary locking limit to the adjusting rod while sealing the heat dissipation structure, preventing it from shaking or accidentally rotating due to external forces. Through multi-structure linkage and limiting, the stability of the cable clamping is further reinforced, improving the equipment's outdoor anti-interference capability and overall structural robustness.

[0020] Optionally, the middle part of the intermediate plate is rotatably connected to the protective plate, and the rotating surface of the intermediate plate is parallel to the side of the connected protective plate; the protective cover can be rotated upward to a horizontal receiving state, and a receiving groove is opened on the top surface of the protective cover at this time, and a receiving slot is opened on the bottom surface of the protective cover at this time; when the two clamping plates are in the wiring state and the protective plate is in the horizontal unfolded state, the top surface of the protruding plate abuts against the bottom surface of the clearance notch, and the protective cover is rotated to the receiving state at this time, and the elastic positioning rod can rotate with the intermediate plate to a vertically upward state and be inserted into the receiving slot.

[0021] By adopting the above technical solution, the rotatable intermediate plate, in conjunction with the flip-up receiving protective cover, provides auxiliary functions for equipment maintenance. When the protective cover is flipped up to the horizontal receiving position, the top receiving groove can temporarily store maintenance tools and replacement parts, forming a double storage area with the top surface of the locking plate, solving the problem of lacking a storage platform for outdoor maintenance. Simultaneously, rotating the intermediate plate allows the elastic positioning rod to vertically engage with the receiving slot of the protective cover, quickly fixing the receiving posture of the protective cover and preventing it from shaking and affecting maintenance operations. This structure optimizes the subsequent maintenance environment without compromising the equipment's protection and clamping functions, significantly improving the convenience of equipment operation and maintenance, and greatly enhancing its practicality.

[0022] Optionally, a third inclined surface is provided at the outer edge of the opening of the protruding notch.

[0023] By adopting the above technical solution, when the protective cover is pressed down and closed, the third inclined surface can guide the fixed crossbar to slide adaptively along the inclined surface. Combined with the telescopic performance of the elastic fixed rod, the two ends of the crossbar can be accurately inserted into the protruding notch. No manual precise alignment is required, and the assembly operation is simple and efficient.

[0024] Secondly, the wiring method for an electricity metering box provided in this application adopts the following technical solution: A wiring method for an electricity metering box, relating to the aforementioned electricity metering box, includes the following steps: Step 1, pre-adjusting the two clamping plates on the same side to the wiring state, locking the hook into the second slot, and rotating the protective plate to a horizontally unfolded state; Step 2, connecting the external cable to the box body through the wiring port; Step 3, moving the locking plate upward to disengage the locking hook from the second slot, then adjusting the two clamping plates on the same side to the clamping state, moving the locking plate downward again to engage the locking hook into the first slot, and then rotating the protective plate to a vertical blocking state, causing the elastic positioning rod to rotate with the middle plate and engage in the positioning slot; Step 4 Step 4: Flip the protective cover downwards to the protective state to seal the heat dissipation vents. The elastic fixing rod drives the fixing crossbar to press down elastically, so that both ends of the fixing crossbar are engaged with the protruding notches on the protruding plate. Step 5: During later maintenance, first remove the elastic positioning rod from the positioning slot, so that the locking plate moves up and the locking hook moves out of the first slot. Then, turn the protective plate to the horizontal unfolded state, adjust the two clamping plates to the wiring state, and then move the locking hook down to insert into the second slot to limit the state of the clamping plate at this time. Finally, turn the protective cover to the receiving state, so that the elastic positioning rod moves with the middle plate to the vertical upward state and is inserted into the receiving slot.

[0025] By adopting the above technical solution, the wiring state is first preset to ensure smooth cable insertion, and then the cable clamping, structural locking, and protective sealing are completed step by step. Through multi-structure linkage limiters, the problem of cable swing and wear is completely solved, ensuring wiring stability and safety. During maintenance, the system can be quickly unlocked step by step and switched to the receiving position, using a dedicated storage structure to assist in maintenance work. The overall method is simple to operate, requires no professional tools, and allows for precise switching of working conditions, balancing construction efficiency, operational safety, and ease of later maintenance. It is suitable for large-scale construction and routine maintenance in various outdoor power distribution scenarios.

[0026] In summary, this application includes the following beneficial technical effects: Two sets of switchable clamping plates are rotatably mounted on the bottom wall of the enclosure. These plates, along with locking mechanisms, allow for flexible switching between wiring and clamping states, effectively solving the problem of traditional metering boxes' large-diameter wiring ports being unable to restrict cable movement. During wiring operations, the clamping plates switch to the wiring state and are fixed in place, completely avoiding the wiring port and ensuring that multiple external cables can smoothly pass through the enclosure without affecting wiring efficiency. After wiring is completed, the two sets of clamping plates rotate in opposite directions and close, with the clamping notches on both sides forming a clamping cavity coaxial with the wiring port. This, combined with the inner wall elastic pad, tightly covers the outer wall of the cable. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram illustrating the distribution of heat dissipation vents and wiring ports in an embodiment of this application; Figure 3This is a partial cross-sectional view of the clamping component installation and fit in an embodiment of this application; Figure 4 This is a partial cross-sectional view of the clamping plate installation and fit in an embodiment of this application; Figure 5 This is a partial cross-sectional structural diagram illustrating the installation and mating of the locking component in an embodiment of this application; Figure 6 yes Figure 5 An enlarged schematic diagram of part A in the middle; Figure 7 This is a partial cross-sectional structural diagram illustrating the installation and cooperation of the connecting rod and the adjusting rod in an embodiment of this application; Figure 8 This is an exploded structural diagram illustrating the installation distribution of clamping and locking components according to an embodiment of this application; Figure 9 This is a partial cross-sectional view of the protective cover installation and assembly in an embodiment of this application; Figure 10 yes Figure 9 Enlarged schematic diagram of part B in the middle; Figure 11 This is a partial structural diagram illustrating the installation and assembly of the protective cover in an embodiment of this application.

[0028] In the diagram, 1. Cabinet; 11. Vent; 12. Wiring port; 13. Second slot; 14. Clearance hole; 15. Mounting through slot; 2. Cabinet door; 3. Clamping component; 31. Clamping plate; 311. Limiting surface; 312. Abutment slope; 313. Clamping notch; 314. First slot; 32. Elastic pad; 33. Connecting rod; 34. Adjusting rod; 35. Protruding plate; 351. Protruding notch; 352. Third slope; 4. 41. Locking component; 42. Locking plate; 43. Locking rod; 44. Positioning slot; 45. Locking hook; 46. First inclined surface; 57. Protective component; 51. Protective plate; 51. Clearance notch; 52. Intermediate plate; 53. Elastic positioning rod; 54. Second inclined surface; 55. Protective cover; 66. Mounting opening; 67. Protective net; 68. Receiving groove; 69. Receiving slot; 70. Elastic fixing rod; 71. Fixing crossbar. Detailed Implementation

[0029] The present application will be further described in detail below with reference to all the accompanying drawings. Example

[0030] Reference Figure 1 , Figure 2 and Figure 3A stable power metering box includes a box body 1, two doors 2 rotatably mounted on the front side of the box body 1, several heat dissipation vents 11 on the lower part of the left and right sides of the box body 1, and two wiring ports 12 on the bottom surface; clamping members 3 are provided at the left and right edges of the bottom wall of the box body 1, the clamping members 3 include two clamping plates 31 rotatably mounted at the left and right edges of the bottom wall of the box body 1, the rotating surface of the clamping plates 31 is parallel to the bottom wall of the box body 1, the side of the two clamping plates 31 that are far apart from each other is a limiting surface 311, and the limiting surface 311 is provided with an abutting inclined surface 312 near the edge of the left and right side walls of the box body 1; the two clamping plates 31 can rotate towards each other to a clamping state where they abut against each other, and rotate away from each other to a wiring state where the abutting surface abuts against the inner wall of the box body 1; a locking member 4 is provided on the outside of the box body 1. Clamping notches 313 are provided on the sides of the two clamping plates 31 that are close to each other. An elastic pad 32 made of rubber is fixed on the inner wall of the clamping notch 313. When the metering box is wired and installed, the two clamping plates 31 are adjusted to the wiring state and fixed with the locking member 4. At this time, it is convenient for the external cable to be connected to the box 1 from the wiring port 12. After the metering box is wired, the two clamping plates 31 are adjusted to the clamping state and fixed with the locking member 4. At this time, the two opposing clamping notches 313 form a clamping cavity coaxial with the wiring port 12, and the inner wall of the elastic pad 32 is elastically pressed against the outer side of the external cable.

[0031] Reference Figure 4 , Figure 5 and Figure 6 The top surfaces of the two clamping plates 31 are provided with first slots 314, and the bottom wall of the housing 1 is provided with the same number of second slots 13 as the first slots 314. When the two clamping plates 31 are clamped, the positions of the first slots 314 and the second slots 13 coincide in the vertical direction. The locking member 4 includes a locking plate 41 located horizontally below the housing 1. Locking rods 42 are fixed at the four corners of the top surface of the locking plate 41. The bottom wall of the housing 1 is provided with clearance holes 14 for the locking rods 42 to pass through. A locking hook 43 located inside the housing 1 is fixed on the upper surface of the locking rod 42, and a first inclined surface 431 is provided at the outer edge of the lower end surface of the locking hook 43. When the two clamping plates 31 are clamped, the locking hook 43 can move down with the locking rod 42 and be engaged in the first slot 314 along the first inclined surface 431; when the two clamping plates 31 are in the wiring state, the locking hook 43 can move down with the locking rod 42 and be engaged in the second slot 13 along the first inclined surface 431. The sides of the upper ends of the two locking rods 42 that are far apart from each other are in contact with the sides of the two clamping plates 31 that are close to each other. The top surface of the locking plate 41 in this state can temporarily hold maintenance tools during later maintenance.

[0032] Reference Figure 7 and Figure 8Both clamping plates 31 are rotatably connected to the bottom wall of the box 1 via a rotating shaft. A connecting rod 33 is vertically fixed on the edge of the inclined surface 312 near the rotating shaft. An installation slot 15 is provided at the lower edge of the left and right sides of the box 1 for the two connecting rods 33 on the same side to pass through. An adjusting rod 34 located outside the box 1 is fixed on the end face of the connecting rod 33 away from the clamping plate 31. When the two clamping plates 31 are in the wiring state, the two connecting rods 33 rotate synchronously to abut each other in a side-by-side state; when the two clamping plates 31 are in the clamping state, the two adjusting rods 34 rotate synchronously to abut the outer side of the housing 1 in a coaxial state; therefore, when it is necessary to adjust the state of the two clamping plates 31 on the same side, the adjusting rods 34 located outside the housing 1 can be moved directly without opening the housing door 2, and the state of the clamping blocks can be quickly adjusted according to the actual situation.

[0033] Reference Figure 8 , Figure 9 and Figure 10 The lower left and right sides of the housing 1 are provided with protective components 5. The protective components 5 include protective plates 51 rotatably installed on the lower left and right sides of the housing 1. The rotating surfaces of the two protective plates 51 are parallel to the front side of the housing 1. The protective plates 51 can rotate upward to a horizontal unfolded state above the adjusting rod 34 and downward to a vertical blocking state that seals the opening of the mounting slot 15. When the protective plates 51 are in the horizontal unfolded state, a clearance notch 511 is provided on the bottom surface. The locking rod 42 is provided with a positioning slot 421 on the vertical side near the protective plate 51. When the protective plate 51 is in a vertical blocking state, an intermediate plate 52 is detachably installed on its bottom surface. At this time, two elastic positioning rods 53 with elastic elongation properties are fixed on the side of the intermediate plate 52 near the locking plate 41 in the horizontal direction. A second inclined surface 531 is provided at the outer edge of the end of the elastic positioning rod 53 away from the intermediate plate 52. The elastic positioning rod 53 is a conventional telescopic structure with an internal spring, which will not be described in detail here. When the two clamping plates 31 are clamped and the locking hook 43 is engaged in the first slot 314 (that is, clamping the external cable), the two locking plates 41 rotate to the vertical blocking state. At this time, the adjusting rod 34 is engaged in the clearance notch 511, and the end of the elastic positioning rod 53 is engaged in the positioning slot 421. This achieves both the upper and lower sliding limit of the locking rod 42 and the rotation limit of the protective plate 51.

[0034] Reference Figure 8 and Figure 9A protective cover 6 is rotatably connected to the left and right sides of the housing 1. The protective cover 6 can be rotated to a vertical downward protective state that covers the outside of the heat dissipation vent 11. The front and rear sides of the protective cover 6 have installation openings 61, and a protective net 62 is fixed on the inner wall of the installation opening 61. A protruding plate 35 is fixed on the top surface of the end of the adjusting rod 34 away from the connecting rod 33. A protruding notch 351 is opened on the top surface of the protruding plate 35, and a third inclined surface 352 is provided at the outer edge of the opening of the protruding notch 351. When the protective cover 6 is in the protective state, a vertically downward elastic fixing rod 7 with elastic elongation is fixed at the outer edge of the bottom surface. A fixing crossbar 71 is vertically fixed on the end face of the elastic fixing rod 7 away from the protective cover 6. When the protective cover 6 is in the protective state and the protective plate 51 is in the vertical blocking state (that is, clamping the external cable), the two ends of the fixing crossbar 71 are inserted into the protruding notch 351, which not only realizes the limiting and fixing of the protective cover 6 in this state, but also realizes the further limiting and fixing of the two adjusting rods 34.

[0035] Reference Figure 9 and Figure 11 The middle part of the intermediate plate 52 is rotatably connected to the protective plate 51, and the rotating surface of the intermediate plate 52 is parallel to the side of the connected protective plate 51; the protective cover 6 can rotate upward to a horizontal receiving state, and a receiving groove 63 is opened on the top surface of the protective cover 6 at this time, and a receiving slot 64 is opened on the bottom surface of the protective cover 6 at this time. During the later maintenance of the metering box, first adjust the two clamping plates 31 to the wiring state and the protective plate 51 to the horizontal unfolded state. At this time, the top surface of the protruding plate 35 abuts against the bottom surface of the clearance notch 511. Then, turn the protective cover 6 to the receiving state. The elastic positioning rod 53 can then be turned to the vertical upward state with the middle plate 52 and inserted into the receiving slot 64. At this time, the tools or replacement parts used during maintenance can be temporarily placed in the receiving slot 63, and debris can also be placed on the top surface of the locking plate 41.

[0036] A wiring method for an electricity metering box, relating to the aforementioned electricity metering box, includes the following steps: Step 1: Adjust the two clamping plates 31 on the same side to the wiring state beforehand, lock the hook 43 into the second slot 13, and rotate the protective plate 51 to the horizontal unfolded state. Step 2: Connect the external cable to the inside of the enclosure 1 through the connection port 12; Step 3: Move the locking plate 41 upward so that the locking hook 43 disengages from the second slot 13. Then, adjust the two clamping plates 31 on the same side to the clamping state. Move the locking plate 41 downward again so that the locking hook 43 is engaged in the first slot 314. Then, rotate the protective plate 51 to the vertical blocking state so that the elastic positioning rod 53 rotates with the middle plate 52 and is engaged in the positioning slot 421. Step 4: Flip the protective cover 6 downward to the protective state to close the heat dissipation vent 11. The elastic fixing rod 7 drives the fixing crossbar 71 to press down elastically so that both ends of the fixing crossbar 71 are engaged in the protruding notch 351 of the protruding plate 35. Step 5: During later maintenance, first remove the elastic positioning rod 53 from the positioning slot 421, so that the locking plate 41 moves upward and the locking hook 43 moves out of the first slot 314. Then, rotate the protective plate 51 to the horizontal unfolded state and adjust the two clamping plates 31 to the wiring state. Then, move the locking hook 43 downward and insert it into the second slot 13 to limit the state of the clamping plate 31 at this time. Finally, rotate the protective cover 6 to the receiving state, so that the elastic positioning rod 53 moves with the intermediate plate 52 to the vertical upward state and is inserted into the receiving slot 64.

[0037] Steps 1-4 above are to adjust the power meter box to the clamped state where the external cable is elastically clamped and limited, and step 5 is to adjust the power meter box to the maintenance state.

[0038] The implementation principle of this application embodiment is as follows: When the cable is clamped, the two clamping plates 31 are rotated in opposite directions to the clamped state by adjusting the rod 34 on the outside of the housing 1. The clamping notches 313 on both sides close together to form a coaxial clamping cavity, which wraps around the cable passing through the connector 12. Pressing down the bottom locking plate 41 causes the locking hook 43 at the end of the locking rod 42 to engage with the first slot 314 along the first inclined surface 431, locking the position of the clamping plate 31. Then, the protective plate 51 is turned into a vertical blocking state to block the installation through slot 15, so that the elastic positioning rod 53 engages with the positioning slot 421, completing the bidirectional limiting. Finally, the protective cover 6 is flipped to close the heat dissipation vent 11, and the two ends of the fixed crossbar 71 at the bottom elastically engage with the protruding notch 351, realizing multi-structure linkage limiting and stabilizing the cable clamping condition.

[0039] When the equipment is under maintenance, first disengage the elastic positioning rod 53 from the positioning slot 421, then move the locking plate 41 upwards to disengage the locking hook 43 from the first slot 314, thus releasing the lock. Rotate the clamping plate 31 in the opposite direction using the adjusting rod 34 to the open wiring position, then move the locking plate 41 downwards to engage the locking hook 43 into the second slot 13. The sides of the two locking rods 42 that are far apart at the top are now in contact with the sides of the two clamping plates 31 that are close together, thus fixing the open posture. Turn the protective plate 51 to the horizontal unfolded state, and flip the protective cover 6 upwards to the horizontal receiving state. Rotate the middle plate 52 to engage the elastic positioning rod 53 into the receiving slot 64, fixing the protective cover 6. At this time, the receiving groove 63 on the protective cover 6 and the top surface of the locking plate 41 can be temporarily used to place maintenance tools and parts, adapting to maintenance work needs.

[0040] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A stable power metering box, comprising a box body (1), two doors (2) rotatably mounted on the front side of the box body (1), a plurality of heat dissipation vents (11) on the lower part of the left and right sides of the box body (1), and two wiring ports (12) on the bottom surface; characterized in that, Two clamping plates (31) are rotatably installed on the left and right edges of the bottom wall of the box (1). The rotating surface of the clamping plate (31) is parallel to the bottom wall of the box (1). The side of the two clamping plates (31) that are far apart from each other is the limiting surface (311). The limiting surface (311) is provided with an abutting inclined surface (312) near the edge of the left and right side walls of the box (1). The two clamping plates (31) can rotate towards each other to a clamping state where they abut against each other, and rotate away from each other to a wiring state where the abutting surface abuts against the inner wall of the box (1). The box (1) is provided with a locking member (4) that limits and fixes the two clamping plates (31) when they are in the clamping state and the wiring state. A clamping notch (313) is provided on the side of the two clamping plates (31) that are close to each other. An elastic pad (32) is fixed on the inner wall of the clamping notch (313). The two opposing clamping notches (313) form a clamping cavity coaxial with the wiring port (12) when the two clamping plates (31) are in the clamping state.

2. The power metering box with stable wiring according to claim 1, characterized in that, The top surfaces of the two clamping plates (31) are provided with first slots (314), and the bottom wall of the box (1) is provided with the same number of second slots (13) as the first slots (314); when the two clamping plates (31) are clamped, the positions of the first slots (314) and the second slots (13) coincide in the vertical direction; the locking member (4) includes a locking plate (41) arranged horizontally below the box (1), and locking rods (42) are fixed at the four corners of the top surface of the locking plate (41); The bottom wall of the housing (1) is provided with a clearance hole (14) for the locking rod (42) to pass through. The upper end face of the locking rod (42) is fixed with a locking hook (43) located inside the housing (1). When the two clamping plates (31) are in the clamping state, the locking hook (43) can move down with the locking rod (42) and be inserted into the first slot (314). When the two clamping plates (31) are in the wiring state, the locking hook (43) can move down with the locking rod (42) and be inserted into the second slot (13). The sides of the upper ends of the two locking rods (42) that are far apart from each other abut against the sides of the two clamping plates (31) that are close to each other when the limiting hook is inserted into the second slot.

3. The power metering box with stable wiring according to claim 2, characterized in that, The locking hook (43) has a first inclined surface (431) at the outer edge of its lower end face.

4. A power metering box with stable wiring according to claim 2, characterized in that, Both clamping plates (31) are rotatably connected to the bottom wall of the box (1) via a rotating shaft. A connecting rod (33) is vertically fixed on the edge of the inclined surface (312) near the rotating shaft. An installation slot (15) is provided at the lower edge of the left and right sides of the box (1) for the two connecting rods (33) on the same side to pass through. When the two clamping plates (31) are in the wiring state, the two connecting rods (33) rotate synchronously to a parallel state of mutual contact. An adjusting rod (34) located outside the box (1) is fixed on the end face of the connecting rod (33) away from the clamping plate (31). When the two clamping plates (31) are in the clamping state, the two adjusting rods (34) rotate synchronously to a coaxial state of contact with the outer side of the box (1).

5. A power metering box with stable wiring according to claim 4, characterized in that, The lower left and right sides of the box (1) are each rotatably equipped with a protective plate (51). The rotating surfaces of the two protective plates (51) are parallel to the front side of the box (1). The protective plates (51) can rotate upward to a horizontal unfolded state above the adjusting rod (34) and downward to a vertical blocking state that seals the opening of the mounting slot (15). When the protective plate (51) is in the horizontal unfolded state, a clearance notch (511) is provided on the bottom surface. The locking rod (42) is provided with a positioning slot (421) on the vertical side near the protective plate (51). When the protective plate (51) is in a vertical blocking state, a middle plate (52) is detachably installed on its bottom surface. At this time, two elastic positioning rods (53) with elastic elongation properties are fixed on the side of the middle plate (52) near the locking plate (41) in the horizontal direction. When the two locking plates (31) are in a clamping state and the locking hooks (43) are engaged in the first slot (314), the two locking plates (41) are rotated to a vertical blocking state. At this time, the adjusting rod (34) is engaged in the clearance notch (511), and the end of the elastic positioning rod (53) is elastically engaged in the positioning slot (421).

6. A power metering box with stable wiring according to claim 5, characterized in that, The elastic positioning rod (53) has a second inclined surface (531) at the outer edge of its end away from the intermediate plate (52).

7. A power metering box with stable wiring according to claim 5, characterized in that, The left and right sides of the box (1) are rotatably connected to a protective cover (6). The protective cover (6) can be rotated to a vertical downward protective state and cover the outside of the heat dissipation port (11). The front and rear sides of the protective cover (6) are provided with an installation opening (61). A protective net (62) is fixed on the inner wall of the installation opening (61). A protruding plate (35) is fixed on the top surface of the end of the adjusting rod (34) away from the connecting rod (33). A protruding notch (351) is opened on the top surface of the protruding plate (35). When the protective cover (6) is in the protective state, an elastic fixing rod (7) with vertical downward and elastic elongation properties is fixed at the outer edge of the bottom surface. A fixing crossbar (71) is vertically fixed on the end surface of the elastic fixing rod (7) away from the protective cover (6). When the protective cover (6) is in the protective state and the protective plate (51) is in the vertical blocking state, the two ends of the fixing crossbar (71) are inserted into the protruding notch (351).

8. A power metering box with stable wiring according to claim 7, characterized in that, The middle part of the intermediate plate (52) is rotatably connected to the protective plate (51), and the rotating surface of the intermediate plate (52) is parallel to the side of the connected protective plate (51); the protective cover (6) can rotate upward to a horizontal receiving state, and a receiving groove (63) is provided on the top surface of the protective cover (6) at this time, and a receiving slot (64) is provided on the bottom surface of the protective cover (6) at this time. When the two clamping plates (31) are in the wiring state and the protective plate (51) is in the horizontal unfolded state, the top surface of the protruding plate (35) abuts against the bottom surface of the relief notch (511). The protective cover (6) then turns to the receiving state. The elastic positioning rod (53) can then turn to the vertically upward state with the middle plate (52) and be inserted into the receiving slot (64).

9. A power metering box with stable wiring according to claim 7, characterized in that, A third inclined surface (352) is provided at the outer edge of the opening of the protruding notch (351).

10. A wiring method for an electricity metering box, relating to an electricity metering box as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Adjust the two clamping plates (31) on the same side to the wiring state in advance, lock the hook (43) into the second slot (13), and turn the protective plate (51) to the horizontal unfolded state. Step 2: The external cable is connected to the inside of the enclosure (1) from the connection port (12); Step 3: Move the locking plate (41) upward so that the locking hook (43) is dislodged from the second slot (13). Then, adjust the two clamping plates (31) on the same side to the clamping state. Move the locking plate (41) downward again so that the locking hook (43) is engaged in the first slot (314). Then, rotate the protective plate (51) to the vertical blocking state so that the elastic positioning rod (53) rotates with the middle plate (52) and is engaged in the positioning slot (421). Step 4: Flip the protective cover (6) down to the protective state to close the heat dissipation port (11). The elastic fixing rod (7) drives the fixing crossbar (71) to press down elastically, so that the two ends of the fixing crossbar (71) are engaged in the protruding notch (351) on the protruding plate (35). Step 5, during later maintenance, first remove the elastic positioning rod (53) from the positioning slot (421), move the locking plate (41) up so that the locking hook (43) is removed from the first slot (314), then turn the protective plate (51) to the horizontal unfolded state, adjust the two clamping plates (31) to the wiring state, and then move the locking hook (43) down into the second slot (13) to limit the state of the clamping plate (31) at this time; finally, turn the protective cover (6) to the receiving state, so that the elastic positioning rod (53) is turned with the middle plate (52) to the vertical upward state and inserted into the receiving slot (64).

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