Intelligent low-voltage metering box

Abstract

The application relates to an intelligent low-voltage metering box, belonging to the technical field of metering boxes, which comprises a box body, an installation cavity is formed in the box body, a box door for plugging the installation cavity is installed, a limiting through slot is formed in the inner wall of the box body away from the box door, a fixing block is slidably arranged in the limiting through slot, the fixing block can reciprocally slide away from the box door, an arc-shaped notch is formed in the side of the fixing block away from the box door, a flexible fixing rope is detachably installed on the inner wall of the arc-shaped notch, the side of the fixing block away from the box door can slide to be flush with or protrude from the outer side of the box door, and a locking piece for locking the sliding state of the fixing block is arranged in the box body; in the application, when the metering box is installed on a telegraph pole, the fixing block is adjusted to protrude from the outer side of the box door, the arc-shaped notch is tightly abutted against the outer periphery of the telegraph pole, and then the fixing block is fixedly sleeved on the outer periphery of the telegraph pole through the flexible fixing rope.

Description

Technical Field

[0001] This application relates to the technical field of metering boxes, and in particular to an intelligent low-pressure metering box. Background Technology

[0002] In the ongoing development of the power industry, electricity metering, as a crucial link between power supply and consumption, is receiving increasing attention for its accuracy and efficiency. Traditional low-voltage metering boxes primarily perform the basic function of electricity metering. However, with the increasing diversification and complexity of electricity demand and the vigorous promotion of smart grid construction, traditional metering boxes have gradually revealed many shortcomings. For example, they struggle to achieve real-time and accurate collection and transmission of electricity data, failing to meet the power sector's needs for comprehensive monitoring and analysis of electricity consumption information; their capabilities in fault monitoring and early warning are limited, making it difficult to detect and handle abnormal situations in a timely manner, potentially affecting the reliability and security of power supply.

[0003] Currently, there is a type of intelligent low-voltage metering box for housing single-phase electricity meters. Its structure mainly includes a box body and a door mounted on the box body, with an observation window on the door. The single-phase electricity meter can be installed on the inner wall of the box, and users can easily view the meter reading through the observation window. When this metering box is installed outdoors, it is usually mounted on a utility pole, maintaining a certain distance from the ground to ensure safety and metering accuracy. This installation method meets the electricity metering needs in outdoor single-phase power environments, providing convenience for power sector management and user electricity monitoring.

[0004] However, in actual installation, due to the curved outer surface of the utility pole, the aforementioned metering boxes are generally assembled and fixed to the pole using clamps pre-fixed to the outer surface of the box. This fixing method has a significant drawback: the connection area between the clamps and the box is small, resulting in an unstable connection. In complex outdoor environments, such as strong winds, heavy rain, or impacts, the metering boxes are prone to shaking or even loosening, severely affecting their installation stability and indicating room for improvement. Summary of the Invention

[0005] The purpose of this application is to provide an intelligent low-voltage metering box to solve the problem of poor stability of metering boxes installed on utility poles in the above-mentioned related technologies.

[0006] The intelligent low-pressure metering box provided in this application adopts the following technical solution:

[0007] An intelligent low-pressure metering box includes a box body with an installation cavity and a door for sealing the installation cavity. A limiting groove is formed on the inner wall of the box body away from the door, and a fixing block is slidably disposed within the limiting groove. The fixing block can reciprocate in a direction away from the door. An arc-shaped notch is formed on the side of the fixing block away from the door, and a flexible fixing rope is detachably installed on the inner wall of the arc-shaped notch. The side of the fixing block away from the door can slide to a state flush with or protruding from the outer side of the door. A locking element is provided inside the box body to lock the sliding state of the fixing block.

[0008] By adopting the above technical solution, during long-distance transportation, the fixing block can be slid to a recessed state flush with the outer side of the box door, reducing space occupation and facilitating fixation to prevent shaking. When installing the metering box on the utility pole, the fixing block is slid and adjusted to protrude from the outer side of the box door, ensuring the arc-shaped notch fits snugly against the outer circumference of the utility pole. A flexible fixing rope is then used to secure the fixing block to the outer circumference of the utility pole. This fixing method makes the connection between the fixing block and the box body more stable. Even in severe weather conditions such as strong winds and heavy rain, or when subjected to external impacts, the possibility of the metering box shaking or even loosening is effectively reduced, greatly improving the installation stability of the metering box on the utility pole.

[0009] Optionally, the inner wall of the arc-shaped notch is provided with an accommodating notch for inserting a flexible fixing rope.

[0010] By adopting the above technical solution, during the long-distance transportation of the metering box, the flexible fixing rope can be inserted into the receiving notch opened in the inner wall of the arc-shaped notch for proper storage and placement, preventing the flexible fixing rope from swinging or getting tangled. This not only makes the internal space layout of the metering box more regular and reduces the risk of interference or damage to other components caused by the fixing rope swaying during transportation, but also facilitates the handling and organization of the metering box by staff. When installing the metering box onto the utility pole, the flexible fixing rope can be easily removed from the receiving notch and quickly put into use, cooperating with the fixing block to complete the fixation of the metering box on the utility pole.

[0011] Optionally, the inner wall of the limiting groove is provided with an elastic snap-fit ​​component, and the fixing block is provided with a plurality of positioning grooves for the elastic snap-fit ​​component to snap into.

[0012] By adopting the above technical solution, during the sliding process of the fixing block, when it reaches a specific position (such as the retracted state flush with the outer side of the box door or the application state protruding from the outer side of the box door), the elastic snap-fit ​​on the inner wall of the limiting groove will automatically snap into the corresponding positioning groove on the fixing block. This design provides clear positioning for the fixing block, making it convenient for staff to accurately determine whether the fixing block has reached the required position. At the same time, the snap-fit ​​cooperation between the elastic snap-fit ​​and the positioning groove can effectively enhance the installation stability of the fixing block in the corresponding state, prevent the fixing block from sliding arbitrarily due to external forces, and ensure that the fixing block can be firmly maintained in the corresponding state during the transportation or installation of the metering box.

[0013] Optionally, a limiting baffle is fixed on the outer edge of the side of the fixing block facing the door, and a limiting groove for the limiting baffle to be inserted is provided on the inner edge of the opening of the limiting through groove facing the door.

[0014] By adopting the above technical solution, this design not only provides clear positioning guidance for the sliding of the fixing block into place, making it convenient for operators to accurately judge whether the fixing block is installed in place, but also effectively enhances the installation stability of the fixing block in this state, preventing it from shaking or shifting, and ensuring a stable connection between the metering box and the utility pole. Moreover, when the limit baffle is engaged in the limit groove, the side of the fixing block facing the box door is flush with the inner wall of the box, which will not interfere with the subsequent installation of the electricity meter, allowing the electricity meter to be installed smoothly.

[0015] Optionally, the fixing block has several first screw holes on its side facing the door that can coincide with the through holes on the electricity meter.

[0016] By adopting the above technical solution, when installing the electricity meter, the first screw holes on the side of the fixing block facing the box door can precisely coincide with the through holes on the electricity meter. Workers can then directly and securely fix the electricity meter to the fixing block using screws. This design eliminates the need for additional fixing holes on the inner wall of the box, simplifying the processing steps, reducing production costs, and avoiding the potential impact on the structural strength of the box due to excessive holes.

[0017] Optionally, the outer edge of the limiting baffle is an arc surface.

[0018] By adopting the above technical solution, the curved surface structure makes the insertion of the limiting baffle into the limiting slot smoother, reducing friction and collision with the inner edge of the limiting slot opening, lowering the operational difficulty, and making it easier for workers to quickly and accurately insert the limiting baffle into the limiting slot. At the same time, this curved surface design also provides a certain guiding effect; even if there is a slight deviation in the insertion process, the curved surface can guide the limiting baffle smoothly into the limiting slot, improving the installation error tolerance.

[0019] Optionally, the locking component includes two locking plates slidably mounted on the inner wall of the box and an elastic adjusting member installed thereon. The two locking plates are arranged side by side, and the elastic adjusting member is used to drive the two horizontally mounted locking plates to slide back and forth in a direction that approaches each other. A locking notch is provided on the side of the two locking plates that approaches each other. When the side of the fixing block away from the box door is flush with the outer side of the box door, the limiting baffle is engaged in the locking notch. When the limiting baffle is engaged in the limiting groove, the side of the locking plate away from the box door abuts against the side of the fixing block facing the box door.

[0020] By adopting the above technical solution, during transportation, when the side of the fixing block away from the door is flush with the outer side of the door, the limiting baffle engages with the locking notch of the locking plate. The elastic adjusting component moves the two locking plates closer together, firmly locking the fixing block and preventing it from shaking during transportation, thus ensuring the safety of the internal components of the metering box. During installation, the limiting baffle engages with the limiting groove, and the side of the locking plate away from the door abuts against the side of the fixing block facing the door, effectively limiting and locking the protruding state of the fixing block, ensuring a stable connection between the metering box and the utility pole. This design cleverly utilizes the elastic adjusting component and the locking plate to achieve precise locking of the fixing block in different states. It is convenient to operate and has a reliable locking effect, meeting the need for fixing the fixing block during transportation and ensuring the stability of the metering box during installation, thus improving the adaptability and safety of the metering box in different usage scenarios.

[0021] Optionally, the elastic adjustment component includes two adjustment rods fixed to the inner wall of the box, telescopic rods vertically installed on opposite sides of the adjustment rods, and a tension spring located inside the telescopic rods in a stretched state; one end of each telescopic rod is fixedly connected to the upper and lower sides of the adjustment rods respectively, and the relatively far ends of the two telescopic rods are fixedly connected to the sides of the two locking plates that are close to each other; the tension spring is used to maintain the elastic force of the telescopic rods in the tendency to shorten in length.

[0022] By adopting the above technical solution, during transportation, the elastic force of the tension spring keeps the telescopic rod in a shortening direction, causing the two locking plates to move closer together. This securely engages the limiting baffle on the fixed block in its retracted state, preventing the fixed block from shaking and ensuring the safe transportation of the metering box. During installation, when the fixed block is in use and the limiting baffle is engaged in the limiting groove, the cooperation of the telescopic rod and the tension spring still ensures that the locking plate is tightly abutted against the fixed block, reliably limiting and locking the fixed block in its protruding state.

[0023] Optionally, elastic pads that abut against the outer side of the electricity meter are fixed on the sides of the two locking plates that are close to each other.

[0024] By adopting the above technical solution, after the electricity meter is installed on the fixing block, the elastic pads on the sides of the two locking plates that are close to each other will press firmly against the outer side of the electricity meter. On the one hand, the elastic pads have an elastic buffering effect, which can effectively absorb and disperse vibrations and impacts from the outside, reduce damage to the electricity meter caused by external factors, and improve the service life and stability of the electricity meter. On the other hand, the pressing effect of the elastic pads can further enhance the stability of the electricity meter installation, prevent it from shaking in the metering box, and ensure the accuracy of the electricity meter reading.

[0025] Optionally, the inner wall of the locking notch is an arc surface.

[0026] By adopting the above technical solution, the advantages of the curved inner wall design are fully demonstrated when the limiting baffle is inserted into the locking notch. Its curved structure provides excellent guidance; even if the limiting baffle has a certain angular deviation during insertion, it can still slide smoothly into the locking notch along the curved surface, greatly reducing installation difficulty and improving installation efficiency. At the same time, the curved inner wall reduces the contact area between the limiting baffle and the inner wall of the locking notch, reducing friction between them, making the installation process smoother, reducing wear caused by friction, and extending the service life of the limiting baffle and the locking plate.

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

[0028] During long-distance transportation, the fixing block can be slid to a storage state flush with the outer side of the box door, reducing space occupation and facilitating fixation to prevent shaking. When the metering box is installed on the utility pole, the fixing block is slid and adjusted to protrude from the outer side of the box door, so that the arc notch fits tightly against the outer circumference of the utility pole. Then, the fixing block is fixedly sleeved on the outer circumference of the utility pole using a flexible fixing rope. This fixing method makes the connection between the fixing block and the box body more stable. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0031] Figure 2 This is a schematic diagram illustrating the installation and assembly of the flexible fixing rope in an embodiment of this application;

[0032] Figure 3 This is a partial cross-sectional view of the installation and assembly of the fixing block in an embodiment of this application;

[0033] Figure 4 This is a partial cross-sectional view of an embodiment of the present application illustrating the snap-fit ​​connection between the fixing block and the baffle.

[0034] 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;

[0035] Figure 6 This is a partial cross-sectional view of an embodiment of this application showing the baffle being inserted into the limiting groove;

[0036] Figure 7 This is an exploded structural diagram illustrating the installation and distribution of locking components and fixing parts in an embodiment of this application.

[0037] In the diagram, 1. Box body; 11. Mounting cavity; 12. Heat dissipation vent; 13. Air guide cover; 14. Limiting groove; 141. Limiting recess; 142. Placement groove; 2. Box door; 3. Fixing assembly; 31. Fixing block; 311. Arc-shaped notch; 312. Accommodation notch; 313. First screw hole; 314. Baffle; 315. Positioning groove; 32. Flexible fixing rope; 4. Locking component; 41. Locking plate; 411. Locking notch; 42. Elastic adjustment component; 421. Adjusting rod; 422. Telescopic rod; 423. Tension spring; 43. Elastic pad; 5. Elastic snap-fit ​​component; 51. Compression spring; 52. Arc-shaped protrusion. Detailed Implementation

[0038] The present application will be further described in detail below with reference to all the accompanying drawings.

[0039] Example:

[0040] Reference Figure 1 and Figure 2 An intelligent low-pressure metering box includes a box body 1, wherein the box body 1 has an installation cavity 11 and a box door 2 for sealing the installation cavity 11. One vertical edge of the box door 2 is rotatably connected to the opening edge of the installation cavity 11, and the other edge of the box door 2 is locked to the box body 1 by a conventional locking structure. Several heat dissipation vents 12 are provided on two opposite vertical sides of the box body 1, and a guide shroud 13 with the opening orientation is fixed on the outer edge of the opening of the heat dissipation vent 12.

[0041] Reference Figure 2 , Figure 3 and Figure 4 The inner wall of the box body 1 away from the door 2 is provided with two upper and lower limiting grooves 14 in the horizontal direction. The box body 1 is provided with a fixing component 3, which includes a fixing block 31 that slides in the limiting groove 14. The side of the fixing block 31 away from the door 2 is provided with an arc-shaped notch 311. A flexible fixing rope 32 is detachably installed on the inner wall of the arc-shaped notch 311.

[0042] The fixing block 31 can slide back and forth away from the door 2, and the side of the fixing block 31 away from the door 2 can slide to be flush with or protrude from the outer side of the door 2. The box body 1 is provided with a locking member 4 to lock the sliding state of the fixing block 31; the inner wall of the arc-shaped notch 311 is provided with a receiving notch 312 for the flexible fixing rope 32 to be inserted, so as to facilitate the storage and placement of the flexible fixing rope 32 during transportation.

[0043] During long-distance transportation of the metering box, the fixing block 31 can be slid inward to a storage state that is flush with the outer side of the box body 1, and the fixing block 31 in the storage state can be locked by the locking member 4. When the metering box is installed on the utility pole, the fixing block 31 can be slid to an application state that protrudes from the outer side of the box body 1, so that the arc-shaped notch 311 is tightly fitted against the outer circumference of the utility pole, and then the fixing block 31 is fixedly sleeved on the outer circumference of the utility pole by means of flexible fixing rope 32 (specifically by tying, knotting, etc.).

[0044] Reference Figure 3 and Figure 4 A limiting baffle 314 is fixed on the outer edge of the side of the fixing block 31 facing the box door 2, and the outer edge of the limiting baffle 314 is arc-shaped. A limiting groove 141 for the limiting baffle 314 to be inserted is provided on the inner edge of the opening of the limiting through groove 14 facing the box door 2. Several first screw holes 313 that can coincide with the through holes on the energy meter are provided on the side of the fixing block 31 facing the box door 2.

[0045] When the metering box is installed and applied, the fixing block 31 is slid to the application state where it protrudes from the outer side of the box body 1. At this time, the limiting baffle 314 is inserted into the limiting groove 141 along its own arc surface. The side of the fixing block 31 facing the box door 2 is flush with the inner wall of the box body 1 and will not interfere with the subsequent installation of the electricity meter. Moreover, the electricity meter can be directly fixed in the first screw hole 313 on the fixing block 31 by screws, without the need to open additional fixing holes on the inner wall of the box body 1.

[0046] Reference Figure 4 An elastic snap-fit ​​member 5 is provided on the inner wall of the limiting through groove 14. The elastic snap-fit ​​member 5 includes a compression spring 51 and an arc-shaped protrusion 52. The compression spring 51 presses 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 142. 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.

[0047] The fixing block 31 has two positioning grooves 315 for the elastic snap-fit ​​5 to be snapped into. When the fixing block 31 slides to the corresponding two states, the protruding part of the arc-shaped protrusion 52 is snapped into the corresponding positioning groove 315 under the action of the compression spring 51, thereby improving the installation stability of the fixing block 31 in the two states.

[0048] Reference Figure 4 , Figure 5 and Figure 6 The locking component 4 includes two locking plates 41 that slide on the inner wall of the housing 1 and an elastic adjusting component 42. The two locking plates 41 are arranged side by side, and the elastic adjusting component 42 is used to drive the two horizontally installed locking plates 41 to slide back and forth in the direction of mutual approach. A locking notch 411 is provided on the side of the two locking plates 41 that are close to each other, and the inner wall of the locking notch 411 is arc surface.

[0049] When the side of the fixing block 31 away from the door 2 is flush with the outer side of the door 2, the edges of the mutually spaced limiting baffles 314 on the two fixing blocks 31 respectively engage in the corresponding locking notches 411; when the limiting baffles 314 engage in the limiting grooves 141, the side of the locking plate 41 away from the door 2 abuts against the side of the fixing block 31 facing the door 2, thereby limiting and locking the protruding state of the fixing block 31 through the locking plate 41.

[0050] Reference Figure 5 and Figure 6 Two locking plates 41 are fixed with rubber elastic pads 43 by glue on their sides that are close to each other. When the electricity meter is installed between the two locking plates 41, the two elastic pads 43 press against the upper and lower sides of the electricity meter respectively under the action of the elastic adjusting member 42.

[0051] Reference Figure 4 , Figure 5 and Figure 7 The elastic adjustment component 42 includes two adjustment rods 421 fixed to the inner wall of the housing 1 by screws, telescopic rods 422 vertically installed on opposite sides of the adjustment rods 421, and a tension spring 423 located inside the telescopic rods 422. The tension spring 423 is normally in a stretched state, and the two adjustment rods 421 are vertically installed and fixed.

[0052] One end of each of the two telescopic rods 422 is fixedly connected to the upper and lower sides of the adjusting rod 421, respectively. The relatively far ends of the two telescopic rods 422 are fixedly connected to the sides of the two locking plates 41 that are close to each other. The tension spring 423 is used to maintain the elastic force of the telescopic rods 422 in the direction of shortening.

[0053] The implementation principle of this application embodiment is as follows:

[0054] During long-distance transportation, the fixing block 31 is slid inward to a storage state that is flush with the outer side of the box 1. At this time, the arc-shaped protrusion 52 of the elastic snap fastener 5 is engaged in the positioning groove 315 corresponding to the fixing block 31, which improves the storage stability. At the same time, the fixing block 31 is locked by the locking plate 41 of the locking member 4 to prevent it from shaking.

[0055] When installed on the utility pole, the fixing block 31 is slid to the application state protruding from the outer side of the box 1. The limiting baffle 314 is inserted into the limiting groove 141 along the arc surface. The arc-shaped protrusion 52 is inserted into another positioning groove 315. The fixing block 31 is fixed to the utility pole by the flexible fixing rope 32 without affecting the installation of the electricity meter. The electricity meter can be directly fixed in the first screw hole 313 of the fixing block 31 by screws.

[0056] In addition, under the action of the elastic adjustment member 42, the locking plate 41 locks the fixing block 31 during transportation and limits and locks the protruding state of the fixing block 31 during installation. When installing the electricity meter, the elastic pad 43 can also press against the upper and lower sides of the electricity meter to ensure stable installation.

[0057] Unless otherwise defined, the terms or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar words used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "a" or "one," and similar words do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising," "including," and similar words mean that the element or object preceding "comprising" encompasses the element or object listed following "comprising" or "including," and their equivalents, but do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0058] 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 intelligent low-pressure metering box, comprising a box body (1), wherein the box body (1) has an installation cavity (11) and a box door (2) for sealing the installation cavity (11); characterized in that, A limiting groove (14) is provided on the inner wall of the box body (1) away from the box door (2). A fixing block (31) is slidably provided in the limiting groove (14). The fixing block (31) can slide back and forth in the direction away from the box door (2). An arc-shaped notch (311) is provided on the side of the fixing block (31) away from the box door (2). A flexible fixing rope (32) is detachably installed on the inner wall of the arc-shaped notch (311). The side of the fixing block (31) away from the box door (2) can slide to be flush with the outer side of the box door (2) and protrude from the outer side of the box door (2). A locking member (4) is provided in the box body (1) to lock the sliding state of the fixing block (31). The fixing block (31) is fixed with a limiting baffle (314) on the outer edge of the side facing the box door (2), and the limiting through groove (14) is provided with a limiting groove (141) for the limiting baffle (314) to be inserted on the inner edge of the opening facing the box door (2). The locking component (4) includes two locking plates (41) slidably mounted on the inner wall of the box body (1) and an elastic adjusting component (42) installed. The two locking plates (41) are arranged side by side, and the elastic adjusting component (42) is used to drive the two horizontally mounted locking plates (41) to slide back and forth in the direction of mutual approach. A locking notch (411) is provided on the side of the two locking plates (41) that are close to each other. When the side of the fixing block (31) away from the box door (2) is flush with the outer side of the box door (2), the limiting baffle (314) is inserted into the locking notch (411). When the limiting baffle (314) is inserted into the limiting groove (141), the side of the locking plate (41) away from the box door (2) abuts against the side of the fixing block (31) facing the box door (2). The elastic adjustment component (42) includes two adjustment rods (421) fixed on the inner wall of the housing (1), telescopic rods (422) vertically installed on opposite sides of the adjustment rods (421), and a tension spring (423) in a stretched state inside the telescopic rods (422); one end of each telescopic rod (422) is fixedly connected to the upper and lower sides of the adjustment rods (421), and the relatively far ends of the two telescopic rods (422) are fixedly connected to the sides of the two locking plates (41) that are close to each other; the tension spring (423) is used to maintain the elastic force of the telescopic rods (422) in the direction of shortening.

2. The intelligent low-pressure metering box according to claim 1, characterized in that, The inner wall of the arc-shaped notch (311) is provided with a receiving notch (312) for the flexible fixing rope (32) to be inserted.

3. The intelligent low-pressure metering box according to claim 1, characterized in that, The inner wall of the limiting through groove (14) is provided with an elastic snap-fit ​​member (5), and the fixing block (31) is provided with a plurality of positioning grooves (315) for the elastic snap-fit ​​member (5) to snap into.

4. The intelligent low-pressure metering box according to claim 1, characterized in that, The fixing block (31) has several first screw holes (313) on its side facing the door (2) that can coincide with the through holes on the electricity meter.

5. The intelligent low-pressure metering box according to claim 1, characterized in that, The outer edge of the limiting baffle (314) is an arc surface.

6. The intelligent low-pressure metering box according to claim 1, characterized in that, An elastic pad (43) is fixed on the side of the two locking plates (41) that are close to each other, and abuts against the outer side of the energy meter.

7. The intelligent low-pressure metering box according to claim 1, characterized in that, The inner wall of the locking notch (411) is curved.

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