An electric energy metering box convenient for operation and maintenance

Abstract

The application relates to an electric energy metering box convenient for operation and maintenance, and relates to the technical field of smart power grids, which comprises a box body, a box door, an observation window arranged on the inner side of the box door, a heat dissipation opening arranged on the left and right side walls of the box body, and a wire inlet opening arranged on the bottom wall; an observation opening is arranged on the box door, extension plates are fixedly arranged on the two opposite vertical edges of the observation window, a limiting gap is vertically arranged between the observation window and the inner wall of the box door, a plugging plate is arranged in the limiting gap, a pull rod extending into the observation opening is fixedly arranged on the lower part of the plugging plate, a limiting plate and a hinged seat are fixedly arranged on the inner wall of the box door, a locking plate is rotationally connected to the hinged seat, locking clamps are fixedly arranged on the side of the locking plate away from the hinged seat, locking grooves are arranged on the plugging plate, and magnetic blocks are embedded on the locking plate and the limiting plate; in the application, when reading, the plugging plate can be automatically clamped into the locking grooves of the plugging plate through the locking clamps after being slid open, the staff member does not need to continuously exert force to fix the plugging plate with hands, and the hands of the operator are released.

Description

Technical Field

[0001] This application relates to the technical field of smart grids, and in particular to an energy metering box that is easy to operate and maintain. Background Technology

[0002] With the continuous advancement of smart grid construction, wall-mounted electricity metering boxes, as core equipment in low-voltage power distribution terminals, are widely used in residential communities and industrial and commercial power distribution scenarios, undertaking key functions such as electricity metering, electricity data collection, and line branch management. To adapt to various wall-mounted installation environments such as outdoor areas and corridors, metering boxes must meet multiple usage requirements, including wiring zoning, heat dissipation protection, data visualization, and prevention of accidental touches and dust. Currently, mainstream products in the industry generally adopt a multi-cavity partitioned structure, achieving separation of strong and weak current circuits by dividing the incoming, metering, and outgoing lines into independent cavities. Simultaneously, they are equipped with a door structure with a viewing window, allowing viewing of the internal centralized data collector's LCD data without fully opening the door. This reduces maintenance steps and improves the efficiency of meter reading and inspection, making it an indispensable basic supporting device in the current smart electricity data collection system.

[0003] Related technology: An electricity metering box includes a box body and two doors rotatably mounted on the front side of the box body. The box body is divided into an inlet chamber, a metering chamber, and an outlet chamber. Several heat dissipation vents are provided on the left and right side walls of the box body, and several inlet ports are provided on the bottom wall. A centralized data collector with an LCD display is fixedly installed on the inner wall of the inlet chamber. An observation port is provided on the box door corresponding to the position of the centralized data collector. A transparent observation window is fixed to the inner edge of the observation port opening, and a limiting gap is reserved between the observation window and the inner wall of the box door. Two vertically fixed extension plates, detachably connected to the inner wall of the box body, are perpendicular to the two vertical sides opposite the observation window. A limiting plate is fixed to the inner side of the box door, with its top surface abutting against the bottom surface of the observation window. A sliding sealing plate, located within the limiting gap, is provided between the two extension plates. A lever protruding from the outer opening of the observation port is fixed to the outer edge of the bottom surface of the sealing plate.

[0004] The electricity metering box is fixed to the wall with screws on the back side, maintaining a standard installation height and meeting on-site installation specifications. During routine maintenance and reading of the centralized data acquisition unit, staff can move a lever to raise the sealing plate, read the value through the observation window, and release it to allow the sealing plate to return to its original position under its own weight, sealing the observation window for dust protection. However, in actual high-altitude maintenance scenarios (1.5m–1.8m above the ground), staff must continuously hold the lever with one hand to maintain the sealing plate's position while using the other hand to record the reading. Prolonged lifting and lowering can easily cause fatigue. During batch inspections, this issue significantly increases the workload, increasing the risk of reading interruptions and operational errors. The equipment lacks ease of maintenance and has considerable room for improvement. Summary of the Invention

[0005] The purpose of this application is to provide an energy metering box that is easy to operate and maintain, and to solve the problems of existing metering boxes that require one hand to continuously hold up the sealing plate when taking readings at height, which is laborious, easy to get tired, has low efficiency in batch inspections, and is prone to reading interruption and operational errors.

[0006] The energy metering box provided in this application, which is easy to operate and maintain, adopts the following technical solution: An easy-to-maintain electricity metering box includes a box body, a door rotatably mounted on the inner wall of the box body, and an observation window located inside the door. The box body has heat dissipation vents on its left and right side walls and a cable inlet on its bottom wall. An observation opening is provided on the door. Extension plates fixedly connected to the inner edge of the observation opening are fixedly mounted on two opposite vertical edges of the observation window. A vertical limit gap is pre-set between the observation window and the inner wall of the door. A sealing plate is provided within the limit gap, and a lever extending into the observation opening is fixedly mounted below the sealing plate. A limit plate located above the sealing plate and a lever located at the bottom of the sealing plate are fixedly mounted on the inner wall of the door in a horizontal direction. A hinge seat is located above the limiting plate; a locking plate is rotatably connected to the hinge seat. The locking plate can be rotated to a locked state where it is vertically downward and abuts against the outer side of the limiting plate. A locking hook is fixed on the side of the locking plate away from the hinge seat, and a locking groove is opened on the side of the sealing plate away from the door. Magnetic blocks are embedded on the sides of the locking plate and the limiting plate that are close to each other. The sealing plate can slide up to an open state where it abuts against the bottom surface of the limiting plate. At this time, the locking hook is engaged in the locking groove, and the two magnetic blocks abut against each other and are magnetically fixed. A control component is provided on the outer side of the door to drive the locking plate to rotate away from the limiting plate.

[0007] By adopting the above technical solution, during maintenance readings, the sealing plate slides open and automatically engages with the locking slot via a locking hook. Simultaneously, the magnetic attraction of the magnetic block ensures a stable lock, eliminating the need for continuous manual force to hold the sealing plate in place. This frees up operators' hands, allowing for easy recording of readings and data verification. It is particularly suitable for high-altitude and batch inspection scenarios, completely avoiding physical fatigue caused by prolonged hand-holding and preventing reading interruptions and operational errors. Observation and locking can be completed without opening the enclosure door, simplifying the maintenance process and significantly improving the efficiency of batch inspections. Furthermore, the strong stability of the locking structure effectively prevents the sealing plate from automatically sliding down due to vibration or its own weight, ensuring continuous and stable maintenance operations.

[0008] Optionally, an anti-detachment plate located below the observation window is fixed on the inner side of the box door, and an anti-detachment notch is provided on the top surface of the anti-detachment plate for the lower edge of the observation window to be inserted.

[0009] By adopting the above technical solution, an anti-detachment plate with an anti-detachment notch is installed below the observation window. The lower edge of the observation window is inserted into the anti-detachment notch to achieve the limiting and fixing of the observation window. This structure can effectively limit the vertical and horizontal displacement and sway of the observation window, avoiding the problems of loosening, displacement, and falling off that occur when the observation window is fixed only by the extension plates on both sides, thus improving the installation stability and structural robustness of the observation window.

[0010] Optionally, the outer side of the door is provided with side-by-side clearance holes located below the observation port. The control component includes two control rods horizontally located on the outer side of the door and coaxially detachably connected. The ends of the two control rods that are far apart from each other are vertically fixed with a rotating shaft passing through the clearance holes. A positioning rod is slidably provided on the inner side of the door, an elastic pressing member is provided to drive the positioning rod upward, and a connecting rope is provided to connect the lower end face of the positioning rod and the inner end face of the rotating shaft. An extension rod is fixed on the two opposite vertical sides of the locking plate. A control protrusion located above the extension rod is fixed on the outer periphery of the positioning rod. A first inclined surface is provided on the outer edge of the control protrusion. When the two control rods move away from the door under the action of external force, the positioning rod moves downward through the connecting rope. At this time, the control protrusion abuts against the inner side of the extension rod along the first inclined surface and drives the two magnetic blocks to separate.

[0011] By adopting the above technical solution, pulling the detachable control lever pulls the connecting rope to move the positioning rod downwards. The control protrusion with the first inclined surface then presses against the extension rod, overcoming the magnetic attraction of the magnetic block to unlock the device. The operation is simple and effortless. The external design avoids the cumbersome operation and limited reach of traditional built-in unlocking structures, making it suitable for high-altitude and confined working spaces. Simultaneously, the mechanical transmission structure offers rapid response and high stability, ensuring precise and controllable unlocking actions, effectively improving the convenience and efficiency of maintenance and unlocking, and reducing equipment failure rates.

[0012] Optionally, the elastic compression member includes a first spring in a compressed state, a guide block fixed on the inner side of the door, and a protruding plate fixed on the positioning rod. The guide block has a guide hole for the positioning rod to pass through, and the protruding plate is located above the guide block. The two ends of the first spring are fixedly connected to the sides of the guide block and the protruding plate that are close to each other.

[0013] By adopting the above technical solution, after the staff completes the unlocking operation and releases the control lever, the first spring can automatically push the protruding plate to drive the positioning rod to quickly reset and move upward, release the control protrusion from the squeezing limit of the extension rod, so that the locking plate and magnetic block can automatically reset and fit together, restoring the initial state of the locking structure.

[0014] Optionally, the two control rods are telescopic rods with elastic elongation properties. Control blocks and control slots are fixed on the end faces of the two control rods that are close to each other. When the two control rods are in a coaxial and abutting state, the control block on one of them is inserted into the control slot on the other.

[0015] By adopting the above technical solution, the two control rods can be quickly connected and spliced ​​into an integrated operating handle during operation and maintenance, facilitating the unlocking operation by applying force. During normal use, the rods can be easily disassembled, fitting snugly against the cabinet door surface without occupying space or affecting the overall appearance of the cabinet. The telescopic rods have built-in elasticity, adapting to both snap-fit ​​and disassembly requirements; assembly and disassembly require no tools, making operation convenient and efficient.

[0016] Optionally, the control plug has a second inclined surface at the outer edge of its side away from the control lever.

[0017] By adopting the above technical solution, the second inclined surface can play a role in precise guidance and buffering transition during the coaxial docking of the two control rods. Precise alignment is not required during docking; the two control rods can be brought close together, and the second inclined surface can guide the control plug to slide smoothly into the control slot, reducing the difficulty of docking operations and improving splicing efficiency.

[0018] Optionally, a fixed rod is fixed horizontally along the outer side of the box door at the upper edge of the observation port, and a baffle plate is slidably installed horizontally below the fixed rod. Vertically downward support rods are rotatably installed on opposite sides of the baffle plate. A bent rod is vertically fixed on the bottom surface of the support rod in the direction away from the box door, and a support slot is opened on the bottom surface of the bent rod. When the metering box is in normal use, the two control rods are rotated to a vertically upward positioning state, the top surface of the baffle plate abuts against the bottom surface of the fixed rod, and the control plug is inserted into the support slot. When the metering box is under maintenance, the two control rods are rotated to a coaxial state and fixed, the baffle plate is moved down to a state where its bottom surface abuts against the top surface of the control rod, the two support rods are rotated to a horizontal state and abut against the top surface of the control rod, and the bent rod is vertically upward.

[0019] By adopting the above technical solution, during normal operation, the baffle plate fits snugly against the fixed rod, blocking the gap in the observation port. Combined with the control plug engaging the support slot for positioning, this effectively prevents rainwater and dust from seeping into the enclosure, enhancing its protective performance. During maintenance, the structural state can be quickly switched: the baffle plate lowers, the support rod flattens, and a temporary storage platform is formed using the control rod. This platform allows for the temporary placement and hoisting of maintenance tools, eliminating the need for personnel to handle tools manually, significantly improving maintenance convenience. Furthermore, the structural switching does not affect the unlocking operation, and the functions are independent, making it suitable for outdoor high-altitude inspection operations.

[0020] Optionally, a dovetail slide rail is fixed vertically on the outer side of the box door at the left and right edges of the observation port, and a dovetail groove is provided on the barrier plate to slide with the dovetail slide rail.

[0021] By adopting the above technical solution, the dovetail sliding structure has a limiting and anti-detachment function, which can effectively limit the left and right displacement and front and back sway of the barrier plate, avoid the problems of easy loosening, detachment and jamming of ordinary sliding groove structure, and ensure that the barrier plate slides smoothly and stably throughout the process.

[0022] Optionally, a third bevel is provided at the inner edge of the opening of the support slot.

[0023] By adopting the above technical solution, when the metering box is switched to the normal protection state and the control rod is positioned vertically upward, the third inclined surface can provide a precise guiding function, allowing the control plug to be smoothly inserted into the support slot without precise alignment, reducing the difficulty of structural alignment and improving the efficiency of state adjustment.

[0024] Optionally, a guide arc surface is provided on the outer edge of the side of the lever away from the sealing plate.

[0025] By adopting the above technical solution, when the staff moves the lever to raise and lower the sealing plate, the smooth guide arc surface can avoid the right-angled edges from scratching the hands, improving the operating feel and work safety.

[0026] In summary, this application includes the following beneficial technical effects: In this application, during maintenance and reading, the sealing plate slides open and automatically engages with the locking slot via a locking hook. Simultaneously, the magnetic attraction of the magnetic block ensures a secure lock, eliminating the need for continuous manual force to hold the sealing plate in place. This frees up the operator's hands, allowing for easy recording of readings and data verification. It is particularly suitable for high-altitude and batch inspection scenarios, completely avoiding physical fatigue caused by prolonged hand-raising operations and preventing issues such as reading interruptions and operational errors. 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 cross-sectional structural diagram illustrating the installation and assembly of the observation window in an embodiment of this application; Figure 3 This is a partial cross-sectional view of the installation and assembly of the sealing plate according to an embodiment of this application; Figure 4 This is an exploded structural diagram illustrating the installation and distribution of the observation window and sealing plate 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 an exploded structural diagram illustrating the installation and distribution of the barrier components and control rods in an embodiment of this application; Figure 8 This is a partial cross-sectional view of an embodiment of the present application illustrating the installation and engagement of the positioning rod and the elastic extrusion member; Figure 9 This is a partial cross-sectional view of the structure of the control rod and the barrier plate in an embodiment of this application. Figure 10 This is a schematic diagram illustrating the arrangement and distribution of the control plug and control slot in an embodiment of this application; Figure 11 This is a partial structural diagram illustrating the installation and cooperation of the door and the barrier plate in an embodiment of this application; Figure 12 This is a partial structural diagram illustrating the installation and cooperation of the support rod and the bending rod in an embodiment of this application.

[0028] In the diagram, 1. Cabinet; 11. Vent; 12. Cable inlet; 2. Cabinet door; 21. Observation window; 22. Limiting plate; 23. Anti-detachment plate; 231. Anti-detachment notch; 24. Hinge seat; 25. Clearance through hole; 26. Fixing rod; 27. Dovetail slide rail; 3. Observation window; 31. Extension plate; 4. Sealing plate; 41. Lever; 411. Guide arc surface; 42. Locking groove; 5. Locking component; 51. Locking plate; 52. Locking hook; 53. Magnetic block; 54. Extension rod; 6. Control components; 61. Control lever; 611. Control plug; 6111. Second inclined plane; 612. Control slot; 62. Rotating shaft; 63. Positioning rod; 64. Elastic extrusion component; 641. First spring; 642. Guide block; 643. Protruding plate; 65. Connecting rope; 66. Control protrusion; 661. First inclined plane; 7. Barrier assembly; 71. Barrier plate; 711. Dovetail groove; 72. Support rod; 73. Bending rod; 731. Support slot; 732. Third inclined plane. Detailed Implementation

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

[0030] Example: Reference Figure 1 , Figure 2 , Figure 3 and Figure 4An easy-to-maintain electricity metering box includes a box body 1, a box door 2 rotatably installed on the inner wall of the box body 1, and an observation window 3 located on the inner side of the box door 2. The box body 1 has heat dissipation vents 11 on the left and right side walls and a cable inlet 12 on the bottom wall. The box door 2 has an observation opening 21. An extension plate 31 is fixedly installed on the two vertical edges opposite to the observation window 3 and is fixedly connected to the inner edge of the opening of the observation opening 21 (by screws). A limit gap is preset vertically between the observation window 3 and the inner wall of the box door 2. A sealing plate 4 is provided in the limit gap. A lever 41 extending into the observation opening 21 is fixedly installed at the lower part of the sealing plate 4. A guide arc surface 411 is provided on the outer edge of the side away from the sealing plate 4. A limiting plate 22 is fixedly installed on the inner wall of the box door 2 along the horizontal direction above the sealing plate 4. An anti-detachment plate 23 is fixedly installed on the inner side of the box door 2 below the observation window 3. An anti-detachment notch 231 is opened on the top surface of the anti-detachment plate 23 for the lower edge of the observation window 3 to be inserted, thereby further limiting the vertical sliding stroke of the sealing plate 4. When it is necessary to control the vertical sliding of the sealing plate 4, the staff can apply force with their fingers to push the lever 41 inside the observation port 21. When the sealing plate 4 slides up and opens, it is convenient for the staff to observe the reading of the internal centralized acquisition device through the observation window 3. When the sealing plate 4 slides down and closes, it protects the observation port 21 and the observation window 3.

[0031] Reference Figure 4 , Figure 5 and Figure 6 A hinge seat 24 is fixedly installed on the inner wall of the door 2 along the horizontal direction above the limiting plate 22. A locking member 5 is provided on the inner side of the door 2. The locking member 5 includes a locking plate 51 whose upper edge is rotatably connected to the hinge seat 24. The locking plate 51 can be rotated to a locked state that is vertically downward and abuts against the outer side of the limiting plate 22. A locking hook 52 is fixedly installed on the side of the locking plate 51 away from the hinge seat 24. A locking groove 42 is opened on the side of the sealing plate 4 away from the door 2. Magnetic blocks 53 are embedded on the sides of the locking plate 51 and the limiting plate 22 that are close to each other. A control member 6 is provided on the outer side of the door 2. During the later maintenance of the metering box (that is, when observing the interior through the observation window 3), the sealing plate 4 can slide up to the open state where it abuts against the bottom surface of the limiting plate 22. At this time, the locking hook 52 is engaged in the locking groove 42 by its own inclined surface. Then, the two magnetic blocks 53 abut against each other and are magnetically fixed, so that the locking hook 52 remains engaged in the locking groove 42, preventing the sealing plate 4 from sliding down automatically. When the metering box needs to be adjusted to the application state, the control component 6 overcomes the weight of the locking plate 51 and the magnetic attraction between the two magnetic blocks 53, and drives the locking plate 51 to rotate away from the limiting plate 22, so that the locking hook 52 is disengaged from the locking groove 42. Then, the sealing plate 4 can be moved down to reseal the observation port 21.

[0032] Reference Figure 7 , Figure 8 and Figure 9 The outer side of the door 2 has side-by-side clearance holes 25 located below the observation port 21. The control component 6 includes two control rods 61 that are horizontally located on the outer side of the door 2 and are coaxially and detachably connected. The ends of the two control rods 61 that are far apart from each other are vertically fixed with a rotating shaft 62 that passes through the clearance holes 25. The inner side of the door 2 is provided with a positioning rod 63 that slides upward, an elastic pressing member 64 that drives the positioning rod 63 to move upward, and a connecting rope 65 that connects the lower end face of the positioning rod 63 and the inner end face of the rotating shaft 62. An extension rod 54 is fixed on the two opposite vertical sides of the locking plate 51. A control protrusion 66 located above the extension rod 54 is fixed on the outer periphery of the positioning rod 63. A first inclined surface 661 is provided on the outer edge of the control protrusion 66. When the metering box needs to be adjusted to the application state, the operator pulls the two control rods 61 to move them away from the box door 2. At this time, the positioning rod 63 is moved down by the connecting rope 65. The control protrusion 66 then abuts against the inner side of the extension rod 54 along the first inclined surface 661 and drives the two magnetic blocks 53 to separate, thereby causing the locking plate 51 to rotate away from the limiting plate 22, so that the locking hook 52 is disengaged from the locking groove 42.

[0033] Reference Figure 8 The elastic compression member 64 includes a first spring 641 in a compressed state, a guide block 642 fixed on the inner side of the door 2, and a protruding plate 643 fixed on the positioning rod 63. The guide block 642 has a guide hole for the positioning rod 63 to pass through. The protruding plate 643 is located above the guide block 642. The two ends of the first spring 641 are fixedly connected to the sides of the guide block 642 and the protruding plate 643 that are close to each other.

[0034] Reference Figure 9 and Figure 10 The two control rods 61 are telescopic rods with elastic elongation properties. The control rods 61 are conventional telescopic structures with internal springs, which will not be described in detail here. Control plugs 611 and control slots 612 are fixed on the end faces of the two control rods 61 that are close to each other. The control plugs 611 have a second inclined surface 6111 on the outer edge of the side away from the control rods 61. When the two control rods 61 are in a coaxial and abutting state, the control plug 611 on one of them is inserted into the control slot 612 on the other, thereby realizing the detachable fixation of the two control rods 61 in the coaxial state.

[0035] Reference Figure 9 , Figure 11 and Figure 12A barrier assembly 7 is provided on the outer side of the door 2. A fixing rod 26 located at the upper edge of the observation port 21 is fixed on the outer side of the door 2 in the horizontal direction. The barrier assembly 7 includes a barrier plate 71 that is slidably installed on the outer side of the door 2 in the horizontal direction and located below the fixing rod 26. Vertical support rods 72 are rotatably installed on the opposite two sides of the barrier plate 71. A dovetail slide rail 27 is fixed vertically on the outer side of the box door 2 at the left and right edges of the observation port 21. A dovetail groove 711 is provided on the baffle plate 71 to slide with the dovetail slide rail 27. A bent rod 73 is fixed vertically on the bottom surface of the support rod 72 in the direction away from the box door 2. A support slot 731 is provided on the bottom surface of the bent rod 73. A third inclined surface 732 is provided at the inner edge of the opening of the support slot 731. When the metering box is in normal use, the two control levers 61 are rotated to the vertically upward positioning state. At this time, the top surface of the baffle plate 71 abuts against the bottom surface of the fixed rod 26, and the control plug 611 is elastically inserted into the support slot 731. At this time, the baffle plate 71 is used to protect the upper edge of the connection between the sealing plate 4 and the observation port 21, reducing the possibility of rainwater seeping in from the upper edge of the connection between the sealing plate 4 and the observation port 21. During the operation and maintenance of the metering box, the two control rods 61 rotate towards each other to a coaxial state and are fixed. At this time, the baffle plate 71 moves down to a state where its bottom surface abuts against the top surface of the control rod 61. The two support rods 72 rotate to a horizontal state and abut against the top surface of the control rod 61. The bent rod 73 is vertically upward at this time. At this time, the two control rods 61 are used to support the bottom surface of the baffle plate 71 and the support rod. Tools needed during operation and maintenance can be temporarily hoisted on the outer periphery of the support rod or temporarily placed on the top surface of the baffle plate 71 at this time. In addition, this state does not affect the user from applying force in the horizontal direction to pull the "handle" composed of the two control rods 61 to drive the locking plate 51 to rotate through the connecting rope 65.

[0036] The implementation principle of this application embodiment is as follows: Under normal operating conditions, move the baffle plate 71 upward and attach it to the fixing rod 26. Then, rotate the two support rods 72 to the vertical downward position and the two control rods 61 to the vertical upward position, so that the control plug 611 is inserted into the support slot 731. This effectively blocks the gap of the observation port 21 through the baffle plate 71, preventing rainwater from seeping in and providing effective protection for the observation window 3 and the internal structure, ensuring the long-term stable operation of the metering box.

[0037] In operation and maintenance mode, the staff first adjusts the two control levers 61 to connect and fix them into an integrated handle. At the same time, the support rod 72 is flipped and the barrier plate 71 is lowered, so that the barrier plate 71 and the support rod 72 are supported above the control levers 61. This allows for temporary placement and hoisting of maintenance tools without affecting the unlocking operation. Through the observation port 21 of the cabinet door 2, the lever 41 is moved to slide the sealing plate 4 upward, revealing the observation window 3 to observe the readings of the data acquisition device inside the cabinet 1. After the sealing plate 4 slides upward to the limit plate 22 and stops, the locking hook 52 automatically engages with the locking groove 42, and is magnetically fixed with the magnetic block 53, effectively preventing the sealing plate 4 from sliding down on its own.

[0038] When it is necessary to unlock the sealing plate 4 in the open state, under the premise of operation and maintenance, the staff applies force to pull the two control rods 61 to connect and fix them to form an integrated handle. The positioning rod 63 is driven to move down through the connecting rope 65, so that the control protrusion 66 squeezes the extension rod 54, overcomes the magnetic attraction of the magnetic block 53, drives the locking plate 51 to flip, so that the locking hook 52 is released from the locking groove 42, and the sealing plate 4 is released from the limit. Then the sealing plate 4 is driven to slide down to reseal the observation port 21. After the operation and maintenance is completed, the corresponding structure can be adjusted to the normal application state.

[0039] 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. An energy metering box that is easy to operate and maintain, comprising a box body (1), a box door (2) rotatably mounted on the inner wall of the box body (1), and an observation window (3) located on the inner side of the box door (2). Heat dissipation vents (11) are provided on the left and right side walls of the box body (1), and a cable inlet (12) is provided on the bottom wall. An observation opening (21) is provided on the box door (2). An extension plate (31) fixedly connected to the inner edge of the opening of the observation opening (21) is fixedly provided on the two opposite vertical edges of the observation window (3). A limit gap is preset vertically between the observation window (3) and the inner wall of the box door (2). A sealing plate (4) is provided within the limit gap, and a lever (41) extending into the observation opening (21) is fixedly provided at the lower part of the sealing plate (4). The box body (1) is characterized in that... A limiting plate (22) located above the sealing plate (4) is fixed on the inner wall of the box door (2) in the horizontal direction, and a hinge seat (24) located above the limiting plate (22) is fixed on the inner wall of the box door (2); A locking plate (51) is rotatably connected to the hinge seat (24). The locking plate (51) can be rotated to a locked state where it is vertically downward and abuts against the outer side of the limiting plate (22). A locking hook (52) is fixed on the side of the locking plate (51) away from the hinge seat (24). A locking groove (42) is opened on the side of the sealing plate (4) away from the door (2). Magnetic blocks (53) are embedded on the sides of the locking plate (51) and the limiting plate (22) that are close to each other. The sealing plate (4) can slide up to an open state where it abuts against the bottom surface of the limiting plate (22). At this time, the locking hook (52) is inserted into the locking groove (42), and the two magnetic blocks (53) abut against each other and are magnetically fixed. A control component (6) is provided on the outer side of the door (2) to drive the locking plate (51) to rotate away from the limiting plate (22).

2. The energy metering box for easy operation and maintenance according to claim 1, characterized in that, An anti-detachment plate (23) located below the observation window (3) is fixed on the inner side of the box door (2). An anti-detachment notch (231) is provided on the top surface of the anti-detachment plate (23) for the lower edge of the observation window (3) to be inserted.

3. The energy metering box for easy operation and maintenance according to claim 1, characterized in that, The outer side of the box door (2) is provided with a clearance through hole (25) located below the observation port (21). The control component (6) includes two control rods (61) arranged horizontally on the outer side of the box door (2) and detachably connected coaxially. The ends of the two control rods (61) that are far apart from each other are vertically fixed with a rotating shaft (62) that passes through the clearance through hole (25). The inner side of the box door (2) is provided with a positioning rod (63), an elastic pressing member (64) that drives the positioning rod (63) to move upward, and a connecting rope (65) that connects the lower end face of the positioning rod (63) and the inner end face of the rotating shaft (62). The locking plate (51) has an extension rod (54) fixed on its two opposite vertical sides. The positioning rod (63) has a control protrusion (66) fixed on its outer periphery above the extension rod (54). The outer edge of the control protrusion (66) has a first inclined surface (661). When the two control rods (61) move away from the box door (2) under the action of external force, the positioning rod (63) moves down through the connecting rope (65). At this time, the control protrusion (66) abuts against the inner side of the extension rod (54) along the first inclined surface (661) and drives the two magnetic blocks (53) to separate.

4. The energy metering box for easy operation and maintenance according to claim 3, characterized in that, The elastic compression member (64) includes a first spring (641) in a compressed state, a guide block (642) fixed on the inner side of the door (2), and a protruding plate (643) fixed on the positioning rod (63). The guide block (642) has a guide hole for the positioning rod (63) to pass through. The protruding plate (643) is located above the guide block (642). The two ends of the first spring (641) are fixedly connected to the sides of the guide block (642) and the protruding plate (643) that are close to each other.

5. The energy metering box for easy operation and maintenance according to claim 3, characterized in that, The two control rods (61) are telescopic rods with elastic elongation properties. Control plugs (611) and control slots (612) are fixed on the end faces of the two control rods (61) that are close to each other. When the two control rods (61) are in a coaxial and abutting state, the control plug (611) on one of them is inserted into the control slot (612) on the other.

6. The energy metering box for easy operation and maintenance according to claim 5, characterized in that, The control plug (611) has a second inclined surface (6111) on the outer edge of its side away from the control lever (61).

7. The energy metering box for easy operation and maintenance according to claim 5, characterized in that, A fixed rod (26) located at the upper edge of the observation port (21) is fixedly installed on the outer side of the box door (2) in the horizontal direction, and a baffle plate (71) located below the fixed rod (26) is slidably installed in the horizontal direction. Vertical support rods (72) are rotatably installed on the opposite two sides of the baffle plate (71). A bent rod (73) is vertically fixed on the bottom surface of the support rod (72) in the direction away from the box door (2), and a support slot (731) is opened on the bottom surface of the bent rod (73). When the metering box is in normal use, the two control rods (61) are rotated to a vertically upward positioning state, the top surface of the baffle plate (71) abuts against the bottom surface of the fixed rod (26), and the control plug (611) is inserted into the support slot (731). When the metering box is in operation and maintenance, the two control rods (61) are rotated to a coaxial state and fixed, the baffle plate (71) is moved down to a state where the bottom surface abuts against the top surface of the control rod (61), the two support rods (72) are rotated to a horizontal state and abut against the top surface of the control rod (61), and the bent rod (73) is vertically upward.

8. The energy metering box for easy operation and maintenance according to claim 7, characterized in that, The outer side of the box door (2) is fixed with a dovetail slide rail (27) in the vertical direction at the left and right edges of the observation port (21), and the baffle plate (71) is provided with a dovetail groove (711) that slides with the dovetail slide rail (27).

9. The energy metering box for easy operation and maintenance according to claim 7, characterized in that, A third inclined surface (732) is provided at the inner edge of the opening of the support slot (731).

10. The energy metering box for easy operation and maintenance according to claim 1, characterized in that, The lever (41) has a guide arc surface (411) on its outer edge away from the sealing plate (4).

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