Intelligent electric energy metering box capable of preventing magnetic interference

Abstract

The invention relates to an anti-magnetic interference intelligent electric energy metering box, and relates to the technical field of electric energy metering boxes, the anti-magnetic interference intelligent electric energy metering box comprises a meter box main body and a shielding assembly, the shielding assembly comprises a shielding box for installing the meter box main body, and a shielding cover detachably installed at the front side of the shielding box; heat dissipation openings are formed in the middle parts of the left and right vertical side surfaces of the shielding box, wiring openings are formed in the lower parts of the left and right vertical side surfaces of the shielding box, and shielding nets are fixedly arranged on the inner walls of the heat dissipation openings; protection plates are rotationally connected to the edges, close to the back side, of the left and right side surfaces of the shielding box, and a plurality of fixing holes are formed in the protection plates; limiting plates are fixedly arranged on the top faces of the two protection plates in the horizontal direction, and a locking piece is arranged on the top face of the shielding box. During carrying, the protection plates are rotated to be in a protection state of being attached to the left side face and the right side face of the shielding box, at the moment, the protection plates can play a role in protecting the shielding nets at the heat dissipation openings, and the shielding performance of the electric meter box is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric energy metering boxes, and in particular to an intelligent electric energy metering box capable of preventing magnetic interference. BACKGROUND

[0002] With the rapid development of smart grids towards high precision and high reliability, the performance requirements of electric energy metering devices are increasingly stringent. As the core metering unit of the power system, the electric meter box needs to operate stably in a complex electromagnetic environment, but the traditional electric meter box made of insulating plastic has weak anti-magnetic interference capability. In a strong magnetic field, the internal electronic components are easily disturbed, leading to a significant increase in metering error, and even causing component damage, which directly affects the accuracy of power data acquisition. In addition, the widespread use of distributed energy and power electronic devices in smart grids further exacerbates the complexity of the electromagnetic environment, making the protection defects of traditional electric meter boxes even more prominent. Therefore, improving the anti-magnetic interference performance of the electric meter box has become a key technical requirement to ensure the reliable operation of smart grids.

[0003] The existing technology generally adopts a "double protection" scheme to improve the anti-interference performance of the electric meter box: the insulating plastic electric meter box is installed as a whole into a metal shielding box made of aluminum alloy or stainless steel, and the Faraday cage effect is formed by the conductivity of the metal to effectively shield external electromagnetic interference. At the same time, in order to balance the heat dissipation requirement and shielding effectiveness, regular arranged heat dissipation holes are designed on the surface of the metal shielding box, and a woven shielding net is installed in the holes. The shielding net is fixed by a pressing strip or bonded by an adhesive, which can not only allow air to circulate to achieve heat dissipation, but also block electromagnetic wave intrusion.

[0004] However, the existing woven shielding net has significant defects in the fixing method. Since non-rigid connections such as pressing strips or adhesives are used, during the overall handling of the metal shielding box and the internal electric meter box, due to the heavy weight, and some elevators cannot pass, two or even more people have to be arranged to carry the electric meter box up the stairs to the designated floor. During this process, the shielding net in the heat dissipation hole area is easily damaged by collision with the stair handrails, resulting in permanent indentation. Once the aperture of the shielding net is deformed by more than a certain percentage, the high-frequency shielding effectiveness will be greatly reduced (such as aperture deformation > 10%, high-frequency shielding effectiveness reduced by 15-20 dB), increasing the risk of electromagnetic interference penetration, and there is room for improvement. SUMMARY

[0005] The purpose of the present application is to provide an intelligent electric energy metering box capable of preventing magnetic interference, which solves the problem that the shielding net may be damaged by collision during the overall handling of the metal shielding box and the internal electric meter box in the related art, affecting the shielding performance of the electric meter box.

[0006] The intelligent electric energy metering box capable of preventing magnetic interference provided by the present application adopts the following technical solution: The utility model provides an anti -magnetic interference's intelligent electric energy metering box, including table box main part and shielding subassembly, shielding subassembly includes the shielding box for table box main part installs and places, shielding cover can be detachably installed in the front side of shielding box, the middle part on the left and right vertical side of shielding box is equipped with the heat dissipation opening, the lower part is equipped with the wiring port, the inner wall of heat dissipation opening is fixed with shielding net, the edge of the left and right side of shielding box near back side is rotatably connected with the guard plate, a plurality of fixed holes are formed in the guard plate, the guard plate can be rotated to the protection state that is attached with the left and right side of shielding box in the direction close to shielding cover, and the installation state that is attached with the back side of shielding box in the direction away from shielding cover, the top surface of two guard plates is fixed with the limiting plate along the horizontal direction, and the top surface of shielding box is equipped with the locking piece, the top surface of limiting plate is attached with the top surface of shielding box when the guard plate is in the protection state, and the locking piece can lock the limiting plate at this time, the locking piece can release the locking of limiting plate when the guard plate needs to be adjusted to the installation state.

[0007] By adopting the above technical scheme, when carrying, the guard plate is rotated to the protection state of being attached with the left and right side of the shielding box, the limiting plate is locked by the locking piece, at this time, the guard plate can protect the shielding net at the heat dissipation opening, effectively avoiding the deformation of the shielding net caused by collision during carrying, thereby preventing the high-frequency shielding effectiveness from being greatly reduced due to the deformation of the shielding net aperture, reducing the risk of electromagnetic interference penetration, and protecting the shielding performance of the electric meter box. When installation is needed, the locking of the limiting plate by the locking piece is released, the guard plate is rotated to the installation state of being attached with the back side of the shielding box, and the normal installation operation is not affected. This design cleverly balances the carrying protection and installation convenience, and improves the reliability and stability of the intelligent electric energy metering box in complex use scenarios.

[0008] Optionally, a first holding groove is formed in the side of the guard plate away from the shielding box when the guard plate is in the protection state.

[0009] By adopting the above technical scheme, during carrying of the intelligent electric energy metering box, the first holding groove can provide a force point for the carrier, facilitating carrying, making the whole carrying process more relaxed and labor-saving, and reducing the risk of accidental collision and damage to the equipment caused by difficult carrying.

[0010] Optionally, an installation hole is formed in the top surface of the shielding box in the vertical direction, the locking piece includes a locking rod penetrating through the installation hole, and an elastic element that drives the locking rod to move upward is arranged on the inner wall of the installation hole; a guide inclined surface is arranged on the upper end edge of the locking rod, the lower end of the locking rod extends to the inside of the shielding box, and a locking slot is formed in the bottom surface of the limiting plate; the locking rod can move upward and be inserted into the locking slot when the guard plate is in the protection state.

[0011] By adopting the technical scheme, when the locking slot on the bottom surface of the limiting plate corresponds to the locking rod, the locking rod is inserted into the locking slot under the action of the elastic member, automatic locking is realized, and the operation is convenient and efficient. When it is necessary to release the locking, the shielding cover is only needed to be opened, and the lower end of the locking rod is only needed to be pulled to make it separate from the locking slot, and the operation is simple and easy. The design not only ensures the stability of the protection plate in the protection state, effectively protects the shielding net, but also greatly facilitates the operation of the staff, improves the flexibility and reliability of the intelligent electric energy metering box in actual use, and reduces the inconvenience and potential risks caused by complex operation.

[0012] Optionally, an installation recess is formed on the upper side opening edge of the mounting hole, a locking collar is fixedly arranged on the outer periphery of the locking rod and slidably arranged in the installation recess, and the elastic member is a first spring fixedly connected at two ends to the bottom wall of the installation recess and the bottom side of the locking collar.

[0013] By adopting the technical scheme, the first spring is used as the elastic member, and the two ends of the first spring are fixedly connected to the bottom wall of the installation recess and the bottom side of the locking collar. The structure is simple and stable, and the locking rod can be stably driven to move upward to realize automatic locking. This not only makes the locking and unlocking processes smoother and more stable, reduces the possibility of jamming and other faults, but also prolongs the service life of the components and improves the performance and stability of the entire anti-magnetic interference intelligent electric energy metering box.

[0014] Optionally, two plugging plates are relatively arranged in the vertical direction on the inner wall of the shielding box near the wiring port, the lower ends of the two plugging plates are rotationally connected to the inner wall of the shielding box, and the rotation surface of the plugging plate is parallel to the connected inner wall of the shielding box; the lower end of the locking rod is provided with a connecting piece for rotationally controlling the two plugging plates, the two plugging plates are rotationally opposite when the locking rod moves downward and rotationally same when the locking rod moves upward; and plugging notches are formed on the sides of the two plugging plates that are close to each other, and the two plugging notches are arranged into a plugging cavity coaxial with the wiring port when the two plugging plates are rotationally same in the vertical state.

[0015] By adopting the technical scheme, when the locking rod moves downward to unlock, the two plugging plates are rotationally opposite to open, facilitating wiring operation; when the locking rod moves upward to lock, the plugging plates are rotationally same, the two plugging notches are arranged into a plugging cavity coaxial with the wiring port, and the gap between the wiring port and the outer periphery of the cable can be effectively plugged, preventing dust, sundries and the like from entering the shielding box, and protecting the internal circuit and components.

[0016] Optionally, the connecting piece includes two connecting rods rotationally mounted on the lower end of the locking rod, the connecting rods are parallel to the rotation surface of the plugging plate, and the lower end of the connecting rod is rotationally connected to the upper side of the plugging plate.

[0017] By adopting the technical scheme, when the locking rod moves up and down, the blocking plate can be precisely driven to rotate towards or away from each other by the connecting rod, thereby effectively blocking and opening the wiring port. This design is simple in structure and reliable in transmission, reduces energy loss and failure rate in the transmission process, ensures that the blocking plate is accurately positioned with the locking rod, further improves the performance of the intelligent electric energy metering box in terms of protection and operation convenience, and ensures stable operation of the equipment.

[0018] Optionally, the top of the shielding box is provided with a control rod capable of reciprocating sliding towards the shielding cover, and the control rod slides along the guide slope to abut against the top surface of the locking rod to drive the locking rod to move downward.

[0019] By adopting the technical scheme, when the control rod slides along the guide slope to abut against the top surface of the locking rod, the locking rod can be driven to move downward. This design provides a more convenient manual unlocking method for the operator, without the need to directly press the locking rod. The control rod can be easily unlocked by sliding, which is more labor-saving and convenient. At the same time, the guide slope makes the contact and transmission process of the control rod and the locking rod smoother, reduces the jamming phenomenon, and improves the smoothness and reliability of the operation.

[0020] Optionally, the top surface of the control rod at both ends is rotatably connected with a positioning rod, and the two positioning rods can be rotated towards each other to a traction state abutting against the top surface of the control rod, or away from each other to a limiting state parallel to the control rod. When the two positioning rods are in the traction state, vertical upward positioning protrusions are fixedly arranged on the end portions of the two positioning rods that are close to each other, and magnetic attraction blocks are embedded in the side surfaces of the two positioning blocks that are close to each other. The limiting plate is provided with a limiting gap in the front side surface when the protection plate is in the installed state. The two magnetic attraction blocks can attract each other when the two positioning rods are in the traction state, and the two positioning blocks can slide into the limiting gap on the same side when the control rod slides when the two positioning rods are in the limiting state.

[0021] By adopting the technical scheme, in the traction state, the positioning protrusions and the magnetic attraction blocks attract each other to stably connect the two positioning rods, facilitating the overall operation of the control rod. When the positioning rods are in the limiting state, the positioning rods can slide with the control rod and slide into the limiting gap to limit the state of the protection plate, preventing it from sliding randomly and triggering the unlocking. This design not only ensures the convenience of the control rod in operation when unlocking, but also effectively fixes the control rod in the non-unlocking state, avoiding accidental downward movement of the locking rod due to misoperation, and improving the safety and stability of the use of the intelligent electric energy metering box.

[0022] Optionally, the protective plate is provided with a receiving groove on the front side in the installed state, and a receiving plate is arranged in the receiving groove, and the lower side edge of the receiving plate is rotationally connected with the opposite two inner walls of the receiving groove, and the receiving plate can be rotated outward to a horizontal state; two positioning holes are formed on the left and right side surfaces of the shielding box, a receiving rod is slidably arranged in the positioning hole, a reset member is arranged on the receiving rod to drive the receiving rod to slide inward, and a guide slope is arranged on the inner end edge of the receiving rod; when the two blocking plates are rotated away from each other, the inner end of the receiving rod is extruded, so that the receiving plate slides outward, and the bottom surface of the receiving plate in the horizontal state can abut against the top surface of the outer end of the receiving rod.

[0023] By adopting the above technical scheme, the receiving rod is slidably arranged in the positioning hole of the side surface of the shielding box, and the reset member is arranged, and the guide slope is used, so that when the two blocking plates are rotated away from each other to extrude the inner end of the receiving rod, the receiving rod can be pushed to slide outward, and then the receiving plate can be stably rotated to the horizontal state and abut against the horizontal state, thereby forming stable support. This design provides a convenient platform for placing tools or temporarily placing cables during wiring operation, thereby improving the operation convenience; after wiring is completed, the blocking plates are rotated towards each other to reset, the receiving rod is retracted under the action of the reset member, and the receiving plate can be retracted into the receiving groove, thereby not affecting the overall structure and appearance. Overall, the scheme optimizes the wiring operation process, enhances the practicability of the equipment, and enables the intelligent electric energy metering box to better meet the needs in different use scenarios.

[0024] Optionally, the second holding groove is formed on the side surface of the receiving plate away from the protective plate when the receiving plate is rotated to the vertical upward state.

[0025] By adopting the above technical scheme, the second holding groove is provided, which provides a convenient force point for the operator, and when the receiving plate needs to be rotated, the fingers can be easily placed in the holding groove to apply force, so that the rotation operation of the receiving plate is more convenient and labor-saving.

[0026] In summary, the present application has the following beneficial technical effects: When carrying, the protective plate is rotated to a protective state in which the protective plate is attached to the left and right side surfaces of the shielding box, and the locking member is used to lock the limiting plate, so that the protective plate can protect the shielding net at the heat dissipation opening, effectively avoiding the deformation of the shielding net caused by collision during carrying, thereby preventing the high-frequency shielding effect from being greatly reduced due to the deformation of the aperture of the shielding net, reducing the risk of electromagnetic interference penetration, and protecting the shielding performance of the electric meter box. When installation is required, the locking of the limiting plate by the locking member is released, and the protective plate is rotated to an installed state in which the protective plate is flush with the rear side surface of the shielding box, thereby not affecting the normal installation operation. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application; Figure 2is a structural schematic view of the installation and cooperation of the protection assembly according to the embodiment of the present application; Figure 3 is a sectional structural schematic view of the installation and cooperation of the locking member according to the embodiment of the present application; Figure 4 is a partial sectional structural schematic view of the installation and cooperation of the locking rod according to the embodiment of the present application; Figure 5 is a partial sectional structural schematic view of the installation and cooperation of the plugging assembly according to the embodiment of the present application; Figure 6 is a partial sectional structural schematic view of the installation and cooperation of the plugging plate according to the embodiment of the present application; Figure 7 is a partial structural schematic view of the installation and cooperation of the control rod according to the embodiment of the present application; Figure 8 is a partial sectional structural schematic view of the installation and cooperation of the control rod according to the embodiment of the present application; Figure 9 is a partial structural schematic view of the installation and cooperation of the positioning protrusion and the limiting gap according to the embodiment of the present application; Figure 10 is a partial structural schematic view of the installation and cooperation of the receiving plate according to the embodiment of the present application; Figure 11 is a partial sectional structural schematic view of the installation and cooperation of the control rod and the reset member according to the embodiment of the present application; Figure 12 is a partial sectional structural schematic view of the installation and cooperation of the control rod according to the embodiment of the present application.

[0028] In the figure, 1, meter box main body; 2, shielding assembly; 21, shielding box; 211, heat dissipation port; 212, wiring port; 213, shielding net; 214, mounting hole; 2141, mounting sink; 215, positioning hole; 2151, positioning sink; 22, shielding cover; 3, protection assembly; 31, protection plate; 311, fixing hole; 312, first holding groove; 313, accommodating sink; 32, limiting plate; 321, locking slot; 322, limiting gap; 33, receiving plate; 331, second holding groove; 4, locking member; 41, locking rod; 411, locking stop ring; 42, elastic member; 421, first spring; 5, plugging assembly; 51, plugging plate; 511, plugging gap; 512, elastic pad; 52, connecting member; 521, connecting rod; 6, control rod; 61, positioning rod; 62, positioning protrusion; 63, magnetic attraction block; 7, receiving rod; 71, receiving stop ring; 8, reset member; 81, second spring. DETAILED DESCRIPTION

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

[0030] Embodiment: Referring to Figure 1 and Figure 2 , a kind of anti-magnetic interference intelligent electric energy metering box, including meter box main body 1 and shielding component 2, wherein shielding component 2 includes the shielding box 21 for installing the meter box main body 1 and is placed, shielding cover 22 can be detachably installed on the front side of shielding box 21, the middle part of the left and right vertical side of shielding box 21 is provided with heat dissipation port 211, lower part is provided with wiring port 212, the inner wall of heat dissipation port 211 is fixed with shielding net 213; The outside of shielding box 21 is provided with protection assembly 3;When carrying the electric energy metering box, shielding net 213 in heat dissipation port 211 is protected using protection assembly 3;When installing the electric energy metering box, the protection of shielding net 213 by protection assembly 3 is removed.

[0031] Referring to Figure 2 and Figure 3 , protection assembly 3 includes protection plate 31 rotatably connected with the edge of the back side of the left and right side of shielding box 21, and a plurality of fixing holes 311 are formed on the top surface of protection plate 31;Two limit plates 32 are fixed on the top surface of protection plate 31 along the horizontal direction, and locking member 4 is arranged on the top surface of shielding box 21;Protection plate 31 can be rotated to the protection state of being attached to the left and right side of shielding box 21 in the direction close to shielding cover 22, and to the installation state of being flush with the back side of shielding box 21 in the direction away from shielding cover 22;First holding groove 312 is formed on the side surface of protection plate 31 away from shielding box 21 when protection plate 31 is in protection state; When carrying the electric energy metering box, protection plate 31 is adjusted to protection state, at this time, limit plate 32 is attached to the top surface of shielding box 21, and limit plate 32 is locked by locking member 4, at this time, the palm of the hand of the worker can be inserted into first holding groove 312 to carry the electric energy metering box;When installing the electric energy metering box on the corresponding vertical installation surface, protection plate 31 needs to be adjusted to installation state, locking member 4 can release the locking of limit plate 32. Then, the two protection plates 31 are rotated away from each other to the installation state, and finally the screws are inserted into the screw holes preformed on the wall surface through the fixing holes 311.

[0032] Referring to Figure 3 and Figure 4 , installation hole 214 is formed on the top surface of shielding box 21 along the vertical direction, and locking member 4 includes locking rod 41 penetrating installation hole 214, and elastic member 42 is arranged on the inner wall of installation hole 214 to drive locking rod 41 to move upward;The upper end edge of locking rod 41 is provided with guide inclined surface, and the lower end of locking rod 41 extends to the inside of shielding box 21, and locking slot 321 is formed on the bottom surface of limit plate 32; An installation recess 2141 is formed on the upper side opening edge of the installation hole 214, and a locking collar 411 is integrally formed on the outer periphery of the locking rod 41 and slidably arranged in the installation recess 2141; the elastic member 42 is a first spring 421 fixedly connected with the bottom wall of the installation recess 2141 and the bottom side of the locking collar 411 at two ends thereof; When the protection plate 31 is in the protection state, the locking rod 41 can be moved upward and inserted into the locking slot 321 under the elastic force of the elastic member 42; when it is necessary to release the protection state of the protection plate 31, the shielding cover 22 can be opened, and then the lower end of the locking rod 41 is pulled to drive the locking rod 41 to move downward, so that the upper end of the locking rod 41 is separated from the locking slot 321.

[0033] With reference to Figure 3 , Figure 5 and Figure 6 , the shielding box 21 is provided with a plugging assembly 5, wherein the plugging assembly 5 comprises two plugging plates 51 oppositely arranged in the vertical direction on the inner wall of the shielding box 21 close to the wiring port 212, the lower ends of the two plugging plates 51 are rotationally connected with the inner wall of the shielding box 21, and the rotation surface of the plugging plate 51 is parallel to the connected inner wall of the shielding box 21; the lower end of the locking rod 41 is provided with an engaging member 52 for rotationally controlling the two plugging plates 51; The engaging member 52 comprises two engaging rods 521 rotationally arranged on the lower end of the locking rod 41, the engaging rod 521 is parallel to the rotation surface of the plugging plate 51, and the lower end of the engaging rod 521 is rotationally connected with the upper side of the plugging plate 51; the two plugging plates 51 are rotationally away from each other when the locking rod 41 moves downward, and are rotationally close to each other when the locking rod 41 moves upward; the side of the plugging plate 51 close to each other is provided with a plugging gap 511, and the inner wall of the plugging gap 511 is fixedly provided with an elastic pad 512 made of rubber; When the two plugging plates 51 are rotationally close to each other to the vertical state, the two plugging gaps 511 are arranged to form a plugging cavity coaxial with the wiring port 212, so as to tightly abut the outer peripheral surface of the external cable penetrating through the wiring port 212 by the plugging plate 51 and the elastic pad 512, thereby reducing the possibility of foreign matter entering the inside of the shielding box 21 through the gap between the wiring port 212 and the cable.

[0034] With reference to Figure 7 , the top of the shielding box 21 is provided with a control rod 6 capable of reciprocating sliding towards the shielding cover 22, and the control rod 6 is in a state of abutting against the top surface of the locking rod 41 when sliding along the guide inclined surface, thereby driving the locking rod 41 to move downward; wherein the control rod 6 is slidingly connected with the top of the shielding box 21 through dovetail sliding rails and dovetail sliding grooves, and the conventional sliding fit is not described herein.

[0035] With reference to Figure 8 and Figure 9The top surface of both ends of the control rod 6 is rotationally connected with a positioning rod 61, and the two positioning rods 61 can be rotated towards each other to a traction state in which the top surface of the control rod 6 is attached, or away from each other to a limiting state in which the control rod 6 is parallel. When the two positioning rods 61 are in the traction state, the end portions of the two positioning rods 61 that are close to each other are integrally formed with a vertical upward positioning protrusion 62, and the side surfaces of the two positioning blocks that are close to each other are both embedded with two magnetic blocks 63 with opposite polarities. The limiting plate 32 is provided with a limiting gap 322 on the front side surface when the protective plate 31 is in the installed state. When the two positioning rods 61 are in the traction state, the two positioning protrusions 62 have a certain gap and do not interfere with the rotation of the two positioning rods 61. At this time, the two magnetic blocks 63 can attract each other, and at this time, the staff can directly hold the two positioning protrusions 62 to drive the control rod 6 to slide back and forth for adjustment. When the two positioning rods 61 are in the limiting state, the two positioning blocks can slide into the same side limiting gap 322 when the control rod 6 slides, so as to pre-lock the protective plate 31 in the installed state, and reduce the possibility of relative rotation between the protective plate 31 and the protective plate 31 after the screw penetrates the fixing hole 311.

[0036] Referring to Figure 10 , Figure 11 and Figure 12 , the protective plate 31 is provided with a receiving groove 313 on the front side surface when it is in the installed state. The receiving groove 313 is provided with a receiving plate 33. The lower side edge of the receiving plate 33 is rotationally connected with the opposite two inner walls of the receiving groove 313. The receiving plate 33 can be rotated outward to a horizontal state. The left and right side surfaces of the shielding box 21 are both provided with two positioning holes 215. The receiving rod 7 is slidably arranged in the positioning hole 215, and the reset member 8 is arranged to drive the receiving rod 7 to slide inward. The inner end edge of the receiving rod 7 is provided with a guide inclined surface. The inner side opening edge of the positioning hole 215 is provided with a positioning groove 2151. The outer periphery of the receiving rod 7 is integrally formed with a receiving stop ring 71 which is slidably arranged in the positioning groove 2151. The reset member 8 is a second spring 81 which is fixedly connected with the inner wall of the positioning groove 2151 and the inner side of the receiving stop ring 71 at both ends. When the two sealing plates 51 are rotated away from each other, the inner end portion of the receiving rod 7 is pressed to make the receiving plate 33 slide outward. The bottom surface of the receiving plate 33 in the horizontal state can abut against the top surface of the outer end portion of the receiving rod 7 at this time. The receiving plate 33 in this state can temporarily place the maintenance tool during later maintenance.

[0037] Referring to Figure 10 , the side surface of the receiving plate 33 away from the protective plate 31 is provided with a second holding groove 331 when the receiving plate 33 is rotated to a vertical upward state. The staff can insert their fingers into the second holding groove 331 to quickly rotate the receiving plate 33 out of the receiving groove 313.

[0038] The implementation principle of the embodiment of the present application is: Handling Protection: During handling, the protective plate 31 is rotated to the protective state and fits against the side of the shielding box 21, the limiting plate 32 fits against the top surface of the shielding box 21, and the locking rod 41 is inserted into the locking slot 321 under the action of the elastic element 42 to complete the fixation. The operator can then handle the equipment by inserting their palm into the first gripping slot 312. At this time, the protective plate 31 covers the heat dissipation vent 211 to prevent damage to the shielding mesh 213 during handling.

[0039] Installation and Fixing: During installation, open the shielding cover 22, pull the locking rod 41 down to disengage it from the locking slot 321, rotate the protective plate 31 to the installation position and align it with the rear side of the shielding box 21, and screw the screws into the wall through the fixing holes 311 to complete the fixation. Rotate the positioning rod 61 to the limit position and slide it into the limit notch 322 to pre-lock the protective plate 31 to prevent rotation and facilitate operation.

[0040] Sealing of connector 212: Adjust the protective plate 31 to the installation position, and at the same time slide the control lever 6 to a position that is misaligned with the top surface of the locking lever 41. When the locking lever 41 moves upward, the sealing plate 51 rotates in opposite directions. The sealing notch 511 and the elastic pad 512 enclose each other to form a sealing cavity, which tightly wraps the external cable and reduces the entry of impurities.

[0041] During later maintenance: the control lever 6 slides along the guide slope to abut against the top surface of the locking lever 41, causing the locking lever 41 to move down, thereby causing the two sealing plates 51 to rotate in opposite directions, so that the sealing plates 51 press against the inner end of the receiving rod 7 along the guide slope, causing the receiving plate 33 to slide outward; then the receiving plate 33 is rotated to a horizontal state, and the bottom surface of the receiving plate 33 can abut against the top surface of the outer end of the receiving rod 7, forming a temporary placement platform supported by the receiving rod 7, improving the convenience of operation.

[0042] 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 smart energy metering box with anti-magnetic interference, comprising a meter box body (1) and a shielding component (2), wherein the shielding component (2) comprises a shielding box (21) into which the meter box body (1) is installed, and a shielding cover (22) that can be detachably installed on the front side of the shielding box (21), wherein a heat dissipation vent (211) is provided in the middle of the left and right vertical sides of the shielding box (21), and a wiring port (212) is provided at the bottom, and a shielding mesh (213) is fixed on the inner wall of the heat dissipation vent (211); Its features are, The shielding box (21) has a protective plate (31) rotatably connected to the left and right sides near the back edge. The protective plate (31) has several fixing holes (311). The protective plate (31) can be rotated towards the shielding cover (22) to a protective state that fits against the left and right sides of the shielding box (21), and rotated away from the shielding cover (22) to an installation state that is flush with the rear side of the shielding box (21). A limiting plate (32) is fixed on the top surface of the two protective plates (31) along the horizontal direction, and a locking member (4) is provided on the top surface of the shielding box (21); the limiting plate (32) is in contact with the top surface of the shielding box (21) when the protective plate (31) is in the protective state, and the locking member (4) can lock the limiting plate (32) at this time; the locking member (4) can release the locking of the limiting plate (32) when the protective plate (31) needs to be adjusted to the installation state.

2. The intelligent power metering box with anti-magnetic interference according to claim 1, characterized in that, When the protective plate (31) is in the protective state, a first gripping groove (312) is provided on the side away from the shielding box (21).

3. The intelligent power metering box with anti-magnetic interference according to claim 1, characterized in that, The shielding box (21) has a mounting hole (214) on its top surface in the vertical direction. The locking member (4) includes a locking rod (41) that passes through the mounting hole (214). An elastic member (42) that drives the locking rod (41) to move upward is provided on the inner wall of the mounting hole (214). The upper edge of the locking rod (41) is provided with a guide slope, and the lower end of the locking rod (41) extends into the interior of the shielding box (21). The bottom surface of the limiting plate (32) is provided with a locking slot (321). When the protective plate (31) is in a protective state, the locking rod (41) can move upward and be inserted into the locking slot (321).

4. The intelligent power metering box with anti-magnetic interference according to claim 3, characterized in that, The upper opening edge of the mounting hole (214) is provided with a mounting groove (2141), and a locking retaining ring (411) is fixedly provided on the outer periphery of the locking rod (41) and slidably disposed in the mounting groove (2141). The elastic element (42) is a first spring (421) whose two ends are fixedly connected to the bottom wall of the mounting groove (2141) and the bottom side of the locking retaining ring (411) respectively.

5. The intelligent power metering box with anti-magnetic interference according to claim 3, characterized in that, Two sealing plates (51) are installed opposite each other in the vertical direction on the inner wall of the shielding box (21) near the wiring port (212). The lower ends of the two sealing plates (51) are rotatably connected to the inner wall of the shielding box (21), and the rotating surface of the sealing plate (51) is parallel to the inner wall of the shielding box (21) to which it is connected. The lower end of the locking rod (41) is equipped with a connector (52) for controlling the rotation of the two sealing plates (51). The two sealing plates (51) rotate in opposite directions when the locking rod (41) moves down and in opposite directions when the locking rod (41) moves up. A sealing notch (511) is provided on the side of the sealing plates (51) that are close to each other. When the two sealing notches (511) rotate in opposite directions to a vertical state, they form a sealing cavity coaxial with the wiring port (212).

6. The intelligent power metering box with anti-magnetic interference according to claim 5, characterized in that, The connector (52) includes two connecting rods (521) rotatably mounted on the lower end of the locking rod (41). The connecting rods (521) are parallel to the rotating surface of the sealing plate (51), and the lower end of the connecting rods (521) is rotatably connected to the upper side of the sealing plate (51).

7. The intelligent power metering box with anti-magnetic interference according to claim 5, characterized in that, The top of the shielding box (21) is provided with a control rod (6) that can slide back and forth towards the shielding cover (22). When the control rod (6) slides along the guide slope to the state of abutting the top surface of the locking rod (41), it drives the locking rod (41) to move down.

8. The intelligent power metering box with anti-magnetic interference according to claim 7, characterized in that, Positioning rods (61) are rotatably connected to the top surfaces of both ends of the control rod (6). The two positioning rods (61) can rotate towards each other to a traction state that is in contact with the top surface of the control rod (6) and rotate away from each other to a limit state that is parallel to the control rod (6). When the two positioning rods (61) are in the traction state, vertically upward positioning protrusions (62) are fixed on the ends that are close to each other. At this time, magnetic blocks (63) are embedded on the sides that are close to each other. When the protective plate (31) is in the installation state, the limiting plate (32) has a limiting notch (322) on the front side. When the two magnetic blocks (63) are in the traction state, they can attract each other. When the two positioning rods (61) are in the limit state, the two positioning blocks can slide into the limit notch (322) on the same side as the control rod (6) slides.

9. The intelligent power metering box with anti-magnetic interference according to claim 7, characterized in that, When the protective plate (31) is in the installation state, a receiving groove (313) is provided on the front side. A receiving plate (33) is provided in the receiving groove (313). The lower edge of the receiving plate (33) is rotatably connected to the two opposite inner walls of the receiving groove (313). The receiving plate (33) can be rotated outward to a horizontal state. The shielding box (21) has two positioning holes (215) on its left and right sides. A receiving rod (7) is slidably installed in the positioning hole (215), and a reset member (8) is installed to drive the receiving rod (7) to slide inward. A guide slope is provided on the inner edge of the receiving rod (7). When the two sealing plates (51) rotate in opposite directions, they squeeze the inner end of the receiving rod (7) to make the receiving plate (33) slide outward. When the receiving plate (33) is in a horizontal state, the bottom surface can abut against the top surface of the outer end of the receiving rod (7).

10. The intelligent power metering box with anti-magnetic interference according to claim 9, characterized in that, The receiving plate (33) has a second gripping groove (331) on the side away from the protective plate (31) when it is rotated to a vertically upward position.

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