A safe and reliable electric energy metering box

Abstract

The application relates to a safe and reliable electric energy metering box and relates to the technical field of smart grids, and comprises a box body, a box door rotatably installed on the front side of the box body, a containing groove is formed in the inner side surface of the box door, and a plurality of heat dissipation openings are formed in the bottom surface of the box body; a locking piece is arranged in the box body, and a limiting plate is rotatably installed on the inner wall of the containing groove; in the application, when a staff member needs to open the box door for outdoor work, the limiting plate can be turned out of the containing groove to a horizontal state, then the detachable connection of the limiting plate and the box body is realized through the locking piece, the box door is stably limited in the open state, the staff member does not need to fix the box door with one hand, both hands are freed to accurately operate a meter reading or a maintenance tool, the single operation time is greatly shortened, the overall efficiency of power grid operation and maintenance is improved, and the safety hidden danger that the work is interrupted or the staff member is collided due to uncontrollable shaking of the box door caused by strong wind is avoided.

Description

Technical Field

[0001] This application relates to the technical field of smart grids, and in particular to a safe and reliable electricity metering box. Background Technology

[0002] In the construction and operation system of smart grids, electricity meter boxes (commonly known as electricity meter boxes) are the core basic equipment for realizing electricity data collection, metering and management. With the continuous expansion of urban and rural power grid coverage, outdoor installation scenarios are increasing. Among them, pole-mounted electricity meter boxes are widely used in residential areas, rural areas and roadsides due to their advantages such as not occupying additional ground space and being easy to avoid areas with people's activity.

[0003] In related technologies, an outdoor meter box installed on a utility pole includes a box body and a door rotatably mounted on the front side of the box body. The door edge is usually equipped with a sealing strip to ensure the internal sealing of the box body when closed, and is also equipped with a lock to ensure electrical safety. Several heat dissipation vents are opened on the bottom surface of the box body to effectively dissipate the heat generated by the meter during operation. The back side of the box body is fixed to the outer perimeter of the utility pole by a metal clamp, so that the bottom of the box body is kept at a safe height of 1.5 meters to 2.5 meters from the ground, which not only avoids water immersion on the ground, but also prevents unauthorized personnel from touching it.

[0004] In the aforementioned technologies, when workers read or repair the meters installed inside the enclosure, they not only have to use a folding ladder to raise their height but also have to keep the enclosure door open for a certain period of time. However, frequent strong winds outdoors can cause the enclosure door to sway uncontrollably. This can lead to work interruptions due to the door closing unexpectedly, or even collisions with workers due to the door swinging at high speed. To avoid these problems, workers need to use one hand to continuously hold the enclosure door in place and can only operate the meter reading or repair tools with one hand. This not only significantly reduces the accuracy of the work but also extends the time of a single operation by more than 30%, seriously restricting the overall efficiency of power grid operation and maintenance work, and there is room for improvement. Summary of the Invention

[0005] The purpose of this application is to provide a safe and reliable electricity metering box, which solves the problem in the above-mentioned related technologies that strong outdoor winds can easily interfere with the opening of the box door, affecting the overall efficiency of meter reading and maintenance.

[0006] The safe and reliable electricity metering box provided in this application adopts the following technical solution:

[0007] A safe and reliable electricity metering box includes a box body and a door rotatably mounted on the front side of the box body. The inner side of the door has a receiving groove, and the bottom surface of the box body has several heat dissipation vents. The box body is equipped with a locking device, and a limiting plate is rotatably mounted on the inner wall of the receiving groove. When the box door is closed, the limiting plate can rotate upward to a vertical position within the receiving groove and be fixed. When the box door is opened, the limiting plate can rotate downward from the receiving groove to a horizontal position. When the limiting plate is in the horizontal position, it can be detachably connected to the box body via the locking device.

[0008] By adopting the above technical solution, when workers need to open the enclosure door for outdoor operations, the limiting plate can be rotated out of the receiving trough to a horizontal position. Then, a locking mechanism secures the limiting plate to the enclosure body, stably keeping the door in the open position. This eliminates the need for workers to hold the door with one hand, freeing their hands for precise operation of meter reading or maintenance tools. This significantly shortens the time required for each operation, improves the overall efficiency of power grid maintenance, and avoids safety hazards such as work interruptions or collisions caused by uncontrolled door swaying in strong winds. When the door is closed, the limiting plate can be rotated upwards into the receiving trough and fixed vertically, without occupying extra space and keeping the inside of the door clean.

[0009] Optionally, the outer periphery of the limiting plate is provided with an elastic snap-fit ​​member, and the side wall of the receiving sink is provided with a positioning groove for the elastic snap-fit ​​member to snap into.

[0010] By adopting the above technical solution, the limiting plate can be accurately fixed in a vertical storage state. The elastic snap-fit ​​component engages with the positioning groove, preventing the limiting plate from loosening or shifting due to door opening and closing or outdoor bumps, eliminating the need for additional fixing operations and improving ease of use. At the same time, this structure eliminates the need for complex components, does not affect the flexibility of rotating the limiting plate to a horizontal position, and maintains the stability of the limiting plate while preserving the simplicity and reliability of the overall structure.

[0011] Optionally, the elastic snap-fit ​​component includes a compression spring and an arc-shaped protrusion. The limiting plate has a placement groove for the compression spring and the arc-shaped protrusion to be placed in. The compression spring squeezes one side of the arc-shaped protrusion, causing a part of the arc-shaped protrusion to protrude from the opening of the placement groove. The outer surface of the protruding part of the arc-shaped protrusion is an arc surface, and the arc length corresponding to this arc surface is a minor arc.

[0012] By adopting the above technical solution, the compression spring can continuously apply compressive force to the arc-shaped protrusion, ensuring its stable protrusion and engagement with the positioning groove, preventing the limiting plate from loosening when in a vertical position; the placement groove provides a stable installation space for both, preventing component displacement. The protruding part of the arc-shaped protrusion adopts a slight arc surface design. When the limiting plate rotates out or into the receiving groove, the arc surface can reduce the frictional resistance with the positioning groove, making the operation smoother and avoiding jamming; at the same time, the slight arc structure can prevent the protrusion from breaking due to excessive force, extending the service life of the component. The overall structure is simple and reliable, balancing the fixing effect and the ease of operation.

[0013] Optionally, the locking element is a locking rod with one end rotatably connected to the bottom wall inside the box, and a locking protrusion is fixed on the outer periphery of the other end of the locking rod; the locking rod can be rotated away from the box door to a horizontally retracted state and towards the box door to a horizontally locked state; a first slot is provided on the bottom surface of the limiting plate when it is in a horizontal state, and a second slot is provided on the bottom wall inside the box; the locking protrusion can be engaged in the first slot when the limiting plate is in a horizontal state and the locking rod is in a horizontally locked state, and the locking protrusion can be engaged in the second slot when the locking rod is in a horizontally retracted state.

[0014] By adopting the above technical solution, when the limiting plate is in a horizontal position to support the open cabinet door, the locking lever rotates towards the cabinet door to a horizontal locking state. The locking protrusion can accurately engage with the first slot of the limiting plate, firmly fixing the limiting plate through a mechanical locking structure. This prevents the cabinet door from shaking due to strong winds or accidental contact, providing a stable working environment for meter reading and maintenance. When it is not necessary to fix the cabinet door, the locking lever rotates away from the cabinet door to a horizontal retracted state. The locking protrusion engages with the second slot on the bottom wall of the cabinet, achieving stable storage of the locking lever itself without occupying extra space inside the cabinet and preventing it from interfering with the components inside the cabinet.

[0015] Optionally, the back of the housing is provided with a positioning plate, a positioning rod is fixedly provided on one side of the positioning plate, and an abutment plate is detachably installed on the side of the positioning plate away from the positioning rod. An abutment notch is provided on the abutment plate, and an elastic abutment pad is fixedly provided on the inner wall of the abutment notch. The housing is provided with a positioning hole for the positioning rod to pass through. An elastic pressing member is provided on the inner wall of the positioning hole to drive the positioning rod to slide back and forth toward the housing door. A guide slope is provided on the inner edge of the positioning rod. When the locking rod is in the horizontal storage state, it presses the positioning rod away from the housing door along the guide slope.

[0016] By adopting the above technical solution, when the locking rod is horizontally stored, the positioning rod is pressed along the guide slope of the positioning rod, which drives the abutment plate closer to the utility pole. The elastic abutment pad in the abutment notch can tightly fit the outer circumference of the utility pole, adapting to utility poles of different diameters. At the same time, the elastic extrusion element in the positioning hole provides continuous extrusion force to the positioning rod, ensuring that the elastic abutment pad is always tightly pressed against the utility pole, preventing it from swaying in outdoor winds. Furthermore, the abutment plate is detachable, facilitating maintenance and replacement. The overall structure can be installed and reinforced using the locking rod without additional operations, balancing stability and ease of operation.

[0017] Optionally, a positioning groove is provided on the inner edge of the opening of the positioning hole facing the door, and a positioning baffle is fixed on the outer periphery of the positioning rod in the positioning groove. The elastic pressing member is a return spring in a compressed state, and the two ends of the return spring are fixedly connected to the side of the positioning baffle away from the door and the inner wall of the positioning groove, respectively.

[0018] By adopting the above technical solution, the positioning groove provides installation and movement space for the positioning baffle, while the positioning baffle limits the sliding range of the positioning rod, preventing it from dislodging from the positioning hole due to excessive movement and ensuring structural integrity. The elastic compression component is set as a return spring in a compressed state, with its two ends fixed to the positioning baffle and the inner wall of the positioning groove, respectively. This allows for a continuous, stable, and uniform compression force, ensuring that the positioning rod drives the abutment plate to always remain firmly against the utility pole.

[0019] Optionally, the locking rod can be rotated to a vertically upward position, with one side of the locking rod abutting against the side of the vertically positioned limiting plate. A first slot and a second slot are provided on the outer periphery of the locking rod. A fixing rod is rotatably connected to the inner end of the positioning rod in the horizontal direction, and a fixing protrusion is fixed to the end of the fixing rod. The fixing protrusion can be engaged in the first slot when the locking rod is in the vertically upward position, and can be rotated into the second slot when the locking rod is in the horizontally retracted position.

[0020] By adopting the above technical solution, the locking rod can be rotated vertically upwards, abutting against the vertical limiting plate. This, combined with the fixing protrusion of the fixing rod, engages in the first slot, mutually limiting movement during transport and preventing damage from component movement. When stored horizontally, the fixing protrusion engages in the second slot, enhancing the stability of the locking rod and preventing accidental rotation. The fixing rod rotates horizontally along the positioning rod, making operation simple and requiring no additional tools to switch between fixed states. The overall design improves both the safety of the metering box during transport and the reliability of daily storage, while reducing redundant structures through component linkage, balancing practicality and convenience.

[0021] Optionally, the abutment plate is rotatably connected to the positioning plate facing the center of the box, and the rotating surface of the abutment plate is parallel to the back side of the box. The abutment plate can be rotated to a state perpendicular to the positioning plate. A storage cavity is provided on the side of the abutment plate facing the positioning plate. A traction rope is provided in the storage cavity. One end of the traction rope is fixedly connected to the inner wall of the storage cavity, and the other end of the traction rope is fixedly provided with an elastic hook. A hanging ring is fixedly provided on the bottom surface of the box door. When the metering box moves a short distance, the abutment plate can be rotated to a state perpendicular to the positioning plate. At this time, the traction rope rotates out of the storage cavity and the elastic hook is engaged in the hanging ring. The traction rope can be held to reverse the movement of the metering box. When the metering box is in use, the abutment plate can be rotated to a state parallel to the positioning plate. At this time, the traction rope and the elastic hook are folded into the storage cavity.

[0022] By adopting the above technical solution, the abutment plate can rotate around the positioning plate. For short-distance movement, it rotates to a vertical position, allowing the traction rope inside the storage cavity to be pulled out. The elastic hook engages with the door ring, and the traction rope can be held for reverse transport without additional tools. For daily use, it rotates to a horizontal position, and the traction rope and hook are folded for storage, saving space. The elastic hook design facilitates quick engagement and disengagement, and the storage cavity protects the traction rope from damage. The overall structure, through simple rotation and engagement, balances ease of transport with neat storage, adapting to the needs of flexible outdoor operations.

[0023] Optionally, the abutment plate has an annular groove on its side facing the positioning plate around the opening of the receiving cavity, and an elastic sealing strip is embedded in the annular groove.

[0024] By adopting the above technical solution, in daily use, the abutment plate is rotated to be parallel to the positioning plate, and the sealing strip can fit tightly against the positioning plate, preventing dust and rainwater from entering the storage cavity and protecting the traction rope; at the same time, it enhances the fit between the abutment plate and the positioning plate, improves structural stability, and adapts to complex outdoor environments.

[0025] Optionally, a storage cavity is provided on the top surface of the limiting plate when it is in a vertical state.

[0026] By adopting the above technical solution, in daily use, the door is closed and the limiting plate is vertically stored in the receiving trough. The storage cavity can be used to store the maintenance record sheet, which not only avoids the record sheet being lost or damaged by moisture due to random placement, but also allows the staff to quickly retrieve the record sheet from the cavity during subsequent maintenance without having to carry it or search for it, thus improving the efficiency of work preparation.

[0027] In summary, this application includes the following beneficial technical effects:

[0028] When workers need to open the box door for outdoor operations, the limiting plate can be rotated out of the receiving trough to a horizontal position, and then the locking device can be used to detachably connect the limiting plate to the box body, so that the box door is stably limited in the open position. Workers do not need to hold the box door with one hand, freeing their hands to accurately operate meter reading or maintenance tools, greatly shortening the time of a single operation, improving the overall efficiency of power grid operation and maintenance, and avoiding the safety hazards of work interruption or collision with workers caused by the box door shaking uncontrollably in strong winds. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0030] Figure 2 This is a cross-sectional structural diagram illustrating the installation and fit of the limiting plate in an embodiment of this application;

[0031] Figure 3 This is a schematic diagram illustrating the installation and mating of the locking component in an embodiment of this application;

[0032] Figure 4 This is a partial cross-sectional view of the locking lever installation and engagement in an embodiment of this application;

[0033] Figure 5 This is a cross-sectional structural diagram illustrating the installation and mating of the flexible snap-fit ​​connector in an embodiment of this application;

[0034] Figure 6 yes Figure 5 An enlarged schematic diagram of part A in the middle;

[0035] Figure 7 This is an exploded structural diagram illustrating the installation and distribution of the abutment plate and the positioning plate in an embodiment of this application;

[0036] Figure 8 This is a cross-sectional structural diagram illustrating the installation and cooperation of the positioning rod and the positioning plate in an embodiment of this application;

[0037] Figure 9 This is a partial cross-sectional view of an embodiment of the present application illustrating the installation and cooperation of the positioning rod and the positioning plate;

[0038] Figure 10 This is a cross-sectional structural diagram illustrating the installation and assembly of the traction rope in an embodiment of this application;

[0039] Figure 11 This is a cross-sectional structural diagram illustrating the installation and assembly of the traction rope in an embodiment of this application;

[0040] Figure 12 yes Figure 11 Enlarged diagram of part B.

[0041] In the diagram, 1. Cabinet; 11. Vent; 12. Second slot; 13. Positioning hole; 131. Positioning recess; 2. Cabinet door; 21. Receiving recess; 22. Positioning groove; 23. Hanging ring; 3. Limiting plate; 31. First slot; 32. Placement slot; 33. Receiving cavity; 4. Locking element; 41. Locking rod; 411. First slot; 412. Second slot; 42. Locking protrusion; 5. Elastic snap-fit ​​element; 51. Pressing... 52. Spring; 6. Arc-shaped protrusion; 7. Positioning component; 8. Positioning plate; 9. Positioning rod; 10. Guide slope; 11. Positioning baffle; 12. Abutment plate; 13. Abutment notch; 14. Receiving cavity; 15. Annular groove; 16. Elastic abutment pad; 27. Elastic extrusion piece; 38. Return spring; 49. Elastic sealing strip; 50. Fixing rod; 61. Fixing protrusion; 72. Traction rope; 83. Elastic hook. Detailed Implementation

[0042] The present application will be further described in detail below with reference to all the accompanying drawings.

[0043] Example:

[0044] Reference Figure 1 , Figure 2 and Figure 3 A safe and reliable electricity metering box includes a box body 1 and a box door 2 rotatably installed on the front side of the box body 1. The inner side of the box door 2 is provided with a receiving groove 21, and a number of heat dissipation vents 11 are provided on the bottom surface of the box body 1. The box body 1 is provided with a locking member 4, and a limit plate 3 is rotatably installed on the inner wall of the receiving groove 21.

[0045] When the door 2 needs to be closed, the limiting plate 3 can rotate upward to a vertical position within the receiving groove 21 and be fixed; when the door 2 is opened, the limiting plate 3 can rotate downward from the receiving groove 21 to a horizontal position, and when the limiting plate 3 is in a horizontal position, it can be detachably connected to the box body 1 through the locking member 4, thereby detachably limiting the door 2 when it is open.

[0046] Reference Figure 2 and Figure 4 The locking element 4 is a locking rod 41 with one end rotatably connected to the bottom wall inside the box 1, and a locking protrusion 42 is fixed on the outer periphery of the other end of the locking rod 41; the locking rod 41 can be rotated away from the box door 2 to a horizontal storage state and towards the box door 2 to a horizontal locking state; when the limiting plate 3 is in a horizontal state, a first slot 31 is opened on the bottom surface, and a second slot 12 is opened on the bottom wall inside the box 1;

[0047] When it is necessary to fix the open door 2, the limiting plate 3 is adjusted to a horizontal state and the locking rod 41 is adjusted to a horizontal locking state. At this time, the locking protrusion 42 can be inserted into the first slot 31, thereby realizing the detachable fixation of the limiting plate 3 and the locking rod 41, and thus realizing the detachable fixation of the door 2 and the box body 1 in this state; when the locking rod 41 is in a horizontal storage state, the locking protrusion 42 can be inserted into the second slot 12, thereby realizing the storage of the locking rod 41.

[0048] Refer to 2 and Figure 3 When the limiting plate 3 is in a vertical state, a receiving cavity 33 is provided on its top surface; when the metering box is in normal use, the maintenance record sheet can be placed inside the receiving cavity 33; when the box door 2 is fixed by the limiting plate 3 and the locking rod 41 in the open state, the meter reading tool or maintenance tool can be placed on the top surface of the limiting plate 3 in this state.

[0049] Reference Figure 5 and Figure 6 The outer periphery of the limiting plate 3 is provided with an elastic snap-fit ​​5, and the side wall of the receiving groove 21 is provided with a positioning groove 22 for the elastic snap-fit ​​5 to snap into; when the limiting plate 3 is rotated to the vertical upward state, the elastic snap-fit ​​5 can snap into the corresponding positioning groove 22, so that the limiting plate 3 can maintain the corresponding state.

[0050] The elastic snap-fit ​​component 5 includes a compression spring 51 and an arc-shaped protrusion 52. The limiting plate 3 has a placement groove 32 for the compression spring 51 and the arc-shaped protrusion 52 to be placed. The compression spring 51 squeezes one side of the arc-shaped protrusion 52, causing a part of the arc-shaped protrusion 52 to protrude from the opening of the placement groove 32. The outer side of the protruding part of the arc-shaped protrusion 52 is an arc surface, and the arc length corresponding to the arc surface is a minor arc.

[0051] Reference Figure 7 and Figure 8 The back of the housing 1 is provided with a positioning component 6, which includes a positioning plate 61 and a positioning rod 62 fixed to one side of the positioning plate 61. An abutment plate 63 is detachably installed on the side of the positioning plate 61 away from the positioning rod 62. An abutment notch 631 is provided on the abutment plate 63. An elastic abutment pad 64 made of rubber is fixed on the inner wall of the abutment notch 631. A positioning hole 13 is provided on the housing 1 for the positioning rod 62 to pass through. An elastic extrusion member 65 is provided on the inner wall of the positioning hole 13 to drive the positioning rod 62 to slide back and forth toward the door 2. A guide slope 621 is provided on the inner edge of the positioning rod 62.

[0052] When the metering box is in normal use (that is, fixed to the outer periphery of the utility pole by clamps), the locking rod 41 is in a horizontally retracted state, which can overcome the elastic force of the elastic pressing member 65, so that the locking rod 41 presses the positioning rod 62 away from the box door 2 along the guide slope 621, so that the elastic abutment pad 64 is pressed tightly against the outer periphery of the utility pole, thereby enhancing the stability of the metering box during use.

[0053] Reference Figure 9 A positioning groove 131 is provided on the inner edge of the opening of the positioning hole 13 facing the door 2. A positioning baffle 622 is fixed on the outer periphery of the positioning rod 62 and is located in the positioning groove 131. The elastic pressing member 65 is a return spring 651 in a compressed state, and the two ends of the return spring 651 are fixedly connected to the side of the positioning baffle 622 away from the door 2 and the inner wall of the positioning groove 131, respectively.

[0054] Reference Figure 9 and Figure 10 The locking lever 41 can be rotated to a vertically upward position. A first slot 411 and a second slot 412 are provided on the outer periphery of the locking lever 41. A fixing lever 7 is rotatably connected to the inner end of the positioning lever 62 in the horizontal direction. A fixing protrusion 71 is fixedly provided at the end of the fixing lever 7. When the locking lever 41 is in a horizontally retracted state, the fixing protrusion 71 can rotate into the second slot 412 along with the fixing lever 7, thereby enhancing the installation stability of the locking lever 41 in this state.

[0055] When the metering box is transported over a long distance, the locking rod 41 is adjusted to a vertically upward position, and the fixing protrusion 71 is rotated into the first slot 411 along with the fixing rod 7. At this time, one side of the locking rod 41 abuts against the side of the vertically positioned limiting plate 3, thereby using the fixing rod 7 to limit and fix the locking rod 41 in this position, and at the same time using the locking rod 41 to enhance the installation stability of the limiting plate 3.

[0056] Reference Figure 11 The abutment plate 63 is rotatably connected to the positioning plate 61 in the middle of the box body 1. The rotating surface of the abutment plate 63 is parallel to the back side of the box body 1. The abutment plate 63 can be rotated to a state perpendicular to the positioning plate 61. A storage cavity 632 is provided on the side of the abutment plate 63 facing the positioning plate 61. A traction rope 8 is provided in the storage cavity 632. One end of the traction rope 8 is fixedly connected to the inner wall of the storage cavity 632. An elastic hook 81 is fixedly provided at the other end of the traction rope 8. A hanging ring 23 is fixedly provided on the bottom surface of the box door 2.

[0057] When the metering box moves a short distance, the abutment plate 63 can rotate to a state perpendicular to the positioning plate 61. At this time, the traction rope 8 rotates out from the storage cavity 632 and the elastic hook 81 is engaged in the hanging ring 23. The traction rope 8 can be held to move the metering box in the opposite direction. When the metering box is in use, the abutment plate 63 can rotate to a state parallel to the positioning plate 61. At this time, the traction rope 8 and the elastic hook 81 are folded into the storage cavity 632.

[0058] Reference Figure 11 and Figure 12 An annular groove 633 is provided on the side of the abutment plate 63 facing the positioning plate 61 around the opening of the storage cavity 632. An elastic sealing strip 66 made of rubber is fixedly embedded in the annular groove 633. When the abutment plate 63 is rotated to a state parallel to the positioning plate 61, the outer side of the elastic sealing strip 66 abuts against one side of the positioning plate 61.

[0059] The implementation principle of this application embodiment is as follows:

[0060] Normal application state: When the door 2 is closed, the limiting plate 3 is vertically stored in the receiving groove 21, and the elastic snap fastener 5 is snapped into the positioning groove 22 for fixation. At this time, the receiving cavity 33 on the limiting plate 3 stores the maintenance record sheet; the locking rod 41 is in a horizontal stored state, and the fixing protrusion 71 is snapped into the second slot 412 to enhance stability. It presses against the positioning rod 62, so that the elastic abutment pad 64 of the abutment plate 63 is pressed tightly against the utility pole. The return spring 651 provides continuous pressing force to improve installation stability; the abutment plate 63 is parallel to the positioning plate 61, and the traction rope 8 is stored.

[0061] When the door 2 is open: the limiting plate 3 is rotated out to the horizontal position, the locking rod 41 is rotated to the horizontal locking position, and the locking protrusion 42 is engaged in the first slot 31 on the limiting plate 3 to limit the door 2. At this time, tools can be placed on the top surface of the limiting plate 3, and the maintenance record sheet can be taken out from the receiving cavity 33.

[0062] Transportation status: During long-distance transportation, the locking rod 41 is vertically upward, the fixing protrusion 71 is inserted into the first slot 411 and abuts against the vertical limiting plate 3, which reinforces the stability; during short-distance movement, the abutment plate 63 is rotated to be perpendicular to the positioning plate 61, the traction rope 8 is pulled out, the elastic hook 81 is hung on the hanging ring 23 of the box door 2, and the measuring box can be moved by holding the traction rope 8.

[0063] 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 safe and reliable electricity metering box, comprising a box body (1), a box door (2) rotatably mounted on the front side of the box body (1), wherein a receiving groove (21) is provided on the inner side of the box door (2), and a plurality of heat dissipation vents (11) are provided on the bottom surface of the box body (1); characterized in that, The housing (1) is provided with a locking element (4), and a limiting plate (3) is rotatably installed on the inner wall of the receiving sink (21). When the housing door (2) is closed, the limiting plate (3) can rotate upward to a vertical state within the receiving sink (21) and be fixed. When the housing door (2) is opened, the limiting plate (3) can rotate downward from the receiving sink (21) to a horizontal state. When the limiting plate (3) is in a horizontal state, it can be detachably connected to the housing (1) through the locking element (4). The locking component (4) is a locking rod (41) with one end rotatably connected to the bottom wall inside the box (1), and a locking protrusion (42) is fixed on the outer periphery of the other end of the locking rod (41); the locking rod (41) can be rotated to a horizontal storage state away from the box door (2) and to a horizontal locking state towards the box door (2); a first slot (31) is provided on the bottom surface of the limiting plate (3) when it is in a horizontal state, and a second slot (12) is provided on the bottom wall inside the box (1); the locking protrusion (42) can be inserted into the first slot (31) when the limiting plate (3) is in a horizontal state and the locking rod (41) is in a horizontal locking state, and the locking protrusion (42) can be inserted into the second slot (12) when the locking rod (41) is in a horizontal storage state; The back of the box (1) is provided with a positioning plate (61), and a positioning rod (62) is fixedly provided on one side of the positioning plate (61). A stop plate (63) is detachably installed on the side of the positioning plate (61) away from the positioning rod (62). A stop notch (631) is provided on the stop plate (63), and an elastic stop pad (64) is fixedly provided on the inner wall of the stop notch (631). The box (1) is provided with a positioning hole (13) through which the positioning rod (62) passes. An elastic extrusion member (65) is provided on the inner wall of the positioning hole (13) to drive the positioning rod (62) to slide back and forth toward the box door (2). A guide slope (621) is provided on the inner edge of the positioning rod (62). When the locking rod (41) is in a horizontal storage state, it presses the positioning rod (62) away from the box door (2) along the guide slope (621). The locking rod (41) can be rotated to a vertically upward state. At this time, one side of the locking rod (41) abuts against the side of the limiting plate (3) which is in a vertical state. The outer periphery of the locking rod (41) is provided with a first slot (411) and a second slot (412). The inner end of the positioning rod (62) is rotatably connected to a fixing rod (7) in the horizontal direction. The end of the fixing rod (7) is fixed with a fixing protrusion (71). The fixing protrusion (71) can be inserted into the first slot (411) when the locking rod (41) is in a vertically upward state, and can be rotated into the second slot (412) when the locking rod (41) is in a horizontally retracted state. The abutment plate (63) is rotatably connected to the positioning plate (61) at the center of the box body (1). The rotating surface of the abutment plate (63) is parallel to the back side of the box body (1), and the abutment plate (63) can rotate to a state perpendicular to the positioning plate (61). A storage cavity (632) is provided on the side of the abutment plate (63) facing the positioning plate (61). A traction rope (8) is provided in the storage cavity (632). One end of the traction rope (8) is fixedly connected to the inner wall of the storage cavity (632), and the other end of the traction rope (8) is fixedly provided with an elastic hook (81). The box door (2) A hanging ring (23) is fixed on the bottom surface; when the measuring box moves a short distance, the abutment plate (63) can rotate to a state perpendicular to the positioning plate (61), and the traction rope (8) rotates out from the storage cavity (632) and the elastic hook (81) is inserted into the hanging ring (23). The traction rope (8) can be held to move the measuring box in the opposite direction; when the measuring box is used, the abutment plate (63) can rotate to a state parallel to the positioning plate (61), and the traction rope (8) and the elastic hook (81) are folded into the storage cavity (632).

2. The safe and reliable electricity metering box according to claim 1, characterized in that, The outer periphery of the limiting plate (3) is provided with an elastic snap-fit ​​member (5), and the side wall of the receiving sink (21) is provided with a positioning groove (22) for the elastic snap-fit ​​member (5) to be snapped into.

3. A safe and reliable electricity metering box according to claim 2, characterized in that, The elastic snap-fit ​​component (5) includes a compression spring (51) and an arc-shaped protrusion (52). The limiting plate (3) has a placement groove (32) for the compression spring (51) and the arc-shaped protrusion (52) to be placed. The compression spring (51) squeezes one side of the arc-shaped protrusion (52) so that a part of the arc-shaped protrusion (52) protrudes from the opening of the placement groove (32). The outer side of the protruding part of the arc-shaped protrusion (52) is an arc surface, and the arc length corresponding to the arc surface is a minor arc.

4. A safe and reliable electricity metering box according to claim 1, characterized in that, The positioning hole (13) has a positioning groove (131) on the inner edge of the opening facing the door (2). The positioning rod (62) has a positioning baffle (622) fixed on its outer periphery in the positioning groove (131). The elastic compression member (65) is a return spring (651) in a compressed state. The two ends of the return spring (651) are fixedly connected to the side of the positioning baffle (622) away from the door (2) and the inner wall of the positioning groove (131), respectively.

5. A safe and reliable electricity metering box according to claim 1, characterized in that, The abutment plate (63) has an annular groove (633) on its side facing the positioning plate (61) around the opening of the receiving cavity (632), and an elastic sealing strip (66) is embedded in the annular groove (633).

6. A safe and reliable electricity metering box according to claim 1, characterized in that, When the limiting plate (3) is in a vertical state, a receiving cavity (33) is provided on its top surface.

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