A remote meter reading type electric energy metering box based on an internet of things

Abstract

This invention relates to the field of electricity metering box technology, and provides an IoT-based remote meter reading electricity metering box, including a box body, a box door, a contact frame, a side guide rail, a mechanical lock, an electricity meter mounting base, an IoT remote meter reading module, a sealed box, a magnetic chuck, and a mechanical locking mechanism. The mechanical locking mechanism consists of a main locking mechanism, two auxiliary locking mechanisms, a mechanical actuator, an anti-pry self-locking mechanism, and a synchronous transmission component. The main locking mechanism and the two auxiliary locking mechanisms work synchronously with the lock hole to lock and unlock the box door at three points (top, middle, and bottom). This solves the problems of uneven force distribution during single-point locking, susceptibility to forced prying leading to electricity theft, and cumbersome unlocking operations, thus improving the anti-pry performance and unlocking efficiency of the box body. The anti-pry self-locking mechanism not only prevents the main locking mechanism and auxiliary locking mechanisms from rigidly colliding with the box body or contact frame, but also provides instantaneous and comprehensive self-locking protection against illegal prying, enhancing the anti-theft and anti-electricity theft performance of the metering box.

Description

Technical Field

[0001] This invention belongs to the field of electricity metering box technology, and particularly relates to an Internet of Things-based remote meter reading electricity metering box. Background Technology

[0002] With the comprehensive advancement of smart distribution network construction in my country, IoT-based remote meter reading electricity metering boxes have become core terminal equipment for low-voltage electricity consumption-side metering management, data acquisition and transmission, and electricity safety protection. They are widely used in various low-voltage distribution scenarios such as residential communities, industrial and commercial parks, and rural power grids. These metering boxes not only undertake the installation and protection of electricity meters and the real-time acquisition and remote uploading of electricity metering data, but are also a key link for power grid companies in carrying out anti-theft management and operation and maintenance safety control. Their interlocking protection performance, outdoor operation reliability, and ease of operation and maintenance directly affect the metering accuracy, electricity safety, and overall operation and maintenance efficiency of the low-voltage distribution network.

[0003] Existing electricity metering boxes include a box body with an opening at the front, a door hinged to the opening, an electricity meter mounting bracket fixed inside the box, an IoT remote meter reading module integrated on the top of the box, an electronic combination lock installed on the door, and a pry-resistant vibration sensor located inside the box. The IoT remote meter reading module collects electricity metering data in real time and uploads it to the power grid operation and maintenance management platform via a wireless communication network, enabling remote automated meter reading. The electronic combination lock receives remote authorization signals from the operation and maintenance platform to control the door's unlocking. The pry-resistant vibration sensor detects unauthorized prying of the door and simultaneously uploads an early warning signal, thus achieving remote meter reading control and basic anti-theft protection for the metering box. However, existing electricity metering boxes still have certain technical shortcomings in practical applications: Firstly, most existing metering boxes use a single-latch, single-point locking structure, which can only achieve single-point locking on one side of the box door. There are no locking limits on the upper and lower edges of the box door, and the box door is prone to large deformation gaps when forcibly pried open. Electricity thieves can insert tools through the gaps to short-circuit the metering circuit or damage the electricity meter. As for some metering boxes that use a multi-latch structure, their multiple latches are designed with independent drives, requiring multiple operations to complete locking and unlocking, which is more cumbersome. Secondly, existing metering boxes rely heavily on electronic sensors for post-event warnings to prevent electricity theft. They can only issue alarm signals after illegal prying occurs and cannot block illegal unlocking paths through mechanical structure. This is a passive protection method. Furthermore, electronic sensors are easily shielded by strong magnetic fields or fail when powered off. In unattended outdoor scenarios, they are easily evaded by electricity thieves, resulting in serious delays and security vulnerabilities in the protection.

[0004] Therefore, in view of the above situation, there is an urgent need to develop a remote meter reading type of electricity metering box based on the Internet of Things to overcome the shortcomings in current practical applications. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a remote meter reading type electricity metering box based on the Internet of Things to solve the problems in the background technology mentioned above.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A remote meter reading electricity metering box based on the Internet of Things (IoT) includes a box body, a door, a contact frame, a side guide rail, a mechanical lock, an electricity meter mounting base, an IoT remote meter reading module, and a sealed box. The sealed box consists of a sealed shell and a sealed base plate. Magnetic attracting elements are fixed to the inner end faces of the contact frame and the door. The box also includes: The mechanical locking mechanism comprises a main locking mechanism, two auxiliary locking mechanisms, a mechanical actuator, an anti-pry self-locking mechanism, and a synchronous transmission component. The main locking mechanism is horizontally installed in the middle of the enclosed base plate, and its power input end is coaxially fixed to the lock cylinder of the mechanical lock. The two auxiliary locking mechanisms are symmetrically installed horizontally at the upper and lower ends of the enclosed base plate along the main locking mechanism. One end of the main locking mechanism and the two auxiliary locking mechanisms penetrates the enclosed housing and cooperates with a locking seat fixed on the inner wall of the housing. The locking seat has a lock hole that cooperates with the main locking mechanism and the two auxiliary locking mechanisms. The main locking mechanism is connected to the two auxiliary locking mechanisms respectively through the synchronous transmission component. The mechanical actuator is mounted on the closed base plate and located on one side of the main locking mechanism. One end of the mechanical actuator is coaxially arranged with the main locking mechanism and intermittently engages with the locking holes arranged equidistantly around the main locking mechanism. The control end of the mechanical actuator is electrically connected to the Internet of Things remote meter reading module. The anti-pry self-locking mechanism consists of a self-locking component, a lever, and a triggering component. One end of the self-locking component is coaxially connected to the secondary lock mechanism, and the other end of the self-locking component is mounted on the closed base plate. A lever perpendicular to the door is fixed on the side of the self-locking component near the closed base plate. The end of the lever is slidably engaged with the transmission end of the triggering component. The transmission end of the triggering component is slidably mounted on the closed base plate. The triggering end of the triggering component is perpendicular to the side guide rail and is elastically slidably mounted on the side guide rail. The triggering end of the triggering component intermittently abuts against the contact frame. The transmission end and the triggering end of the triggering component are linked through an inclined plane transmission structure.

[0007] As a further technical solution of the present invention, the self-locking assembly includes a ratchet, a pawl, a mounting base, a self-locking spring, and a side support plate. The ratchet is coaxially fixed on the secondary locking mechanism. The outer wall of the ratchet has circumferentially distributed grooves that intermittently engage with the pawl. The opening direction of the grooves is consistent with the locking direction of the secondary locking mechanism. The pawl is rotatably mounted on the closed base plate through the mounting base. The end face of the pawl away from the ratchet is connected to the mounting base through the self-locking spring. A side support plate is fixed on the end face of the pawl near the transmission end of the triggering assembly. A lever is vertically fixed on the side support plate.

[0008] As a further technical solution of the present invention, the triggering assembly includes a loop-shaped lever, a trigger slider, a trigger slide block, a trigger spring, an extension slider, a trigger top block, and a return spring. The loop-shaped lever is parallel to the ratchet and fixed on the trigger slider. The inner end face of the loop-shaped lever is slidably engaged with the outer end face of the lever. The trigger slider is horizontally slidably mounted on the closed base plate via the trigger slide block. An extension slider is fixed on the side of the trigger slider near the side guide rail. A trigger spring is installed between the side of the trigger slider away from the side guide rail and the inner wall of the trigger slide block. One end of the extension slider is linked to the top of the trigger top block through an inclined plane transmission structure. The trigger top block is perpendicular to the door and slidably mounted in the side guide rail. A return spring is installed between the bottom of the trigger top block and the bottom of the side guide rail. The top of the trigger top block intermittently abuts against the contact frame.

[0009] As a further technical solution of the present invention, the initial preload of the reset spring is greater than the initial preload of the trigger spring, the initial preload of the reset spring is less than the magnetic attraction between the two magnetic attractors, and the initial preload of the trigger spring is greater than the initial preload of the self-locking spring.

[0010] As a further technical solution of the present invention, the main lock mechanism includes a main lock tongue, a main lock slide, a main lock shaft, and a main lock transmission assembly. The main lock tongue is horizontally slidably mounted in the middle of the closed base plate via the main lock slide. The front end of the main lock tongue penetrates the closed housing and cooperates with the lock hole on the locking seat. The upper and lower ends of the main lock tongue are symmetrically provided with main lock shafts. One of the main lock shafts is coaxially fixed to the lock cylinder of the mechanical lock. The main lock shaft is rotatably mounted on the closed base plate. One end of the main lock shaft is connected to the auxiliary lock mechanism through a synchronous transmission component. The other end of the main lock shaft is fixed with a mechanical actuator that intermittently cooperates with the locking hole on the main lock transmission assembly. The middle part of the main lock shaft is coaxially fixed to one end of the main lock transmission assembly. The other end of the main lock transmission assembly is connected to the side wall of the main lock tongue.

[0011] As a further technical solution of the present invention, the main lock transmission assembly includes a main lock transmission rack and a main lock transmission gear. The main lock transmission rack is symmetrically fixed on the side walls at the upper and lower ends of the main lock tongue. One side of each of the two main lock transmission racks is meshed with a main lock transmission gear. The two main lock transmission gears are coaxially fixed to two main lock shafts respectively. The end faces of the two main lock transmission gears are circumferentially and equidistantly provided with locking holes that are clearance-fitted with the mechanical actuator.

[0012] As a further technical solution of the present invention, the mechanical actuator includes a mounting plate, an electromagnetic push rod, a T-shaped locking block, and an elastic correction component. The mounting plate is fixed on a closed base plate and coaxially arranged with the main lock shaft. An electromagnetic push rod is vertically fixed on the side of the mounting plate near the main lock transmission gear. The electromagnetic push rod is electrically connected to the Internet of Things remote meter reading module. A T-shaped locking block is coaxially fixed on the power output end of the electromagnetic push rod. Elastic correction components are symmetrically installed on both sides of the T-shaped locking block. Both the T-shaped locking block and the elastic correction component are intermittently engaged with the locking hole.

[0013] As a further technical solution of the present invention, the elastic correction component includes a trapezoidal correction plate, a fixing stud, and a correction spring. The trapezoidal correction plate is radially slidably installed on both sides of the T-shaped locking block. The two sides of the trapezoidal correction plate are radially slidably connected to the fixing stud fixed on the side wall of the T-shaped locking block. A correction spring is installed between the middle part of the trapezoidal correction plate and the T-shaped locking block.

[0014] As a further technical solution of the present invention, the secondary lock mechanism includes a secondary lock tongue, a secondary lock slide, and a secondary lock transmission assembly. The secondary lock tongue is horizontally slidably mounted on the upper and lower ends of the closed base plate via the secondary lock slide, and the secondary lock tongue is parallel to the main lock tongue. One end of the secondary lock tongue cooperates with the lock hole on the locking seat. A secondary lock rotating shaft is provided on one side of the secondary lock tongue. The secondary lock rotating shaft is rotatably mounted on the closed base plate. One end of the secondary lock rotating shaft is connected to the main lock rotating shaft through a synchronous transmission component. A ratchet is coaxially fixed to the middle of the secondary lock rotating shaft. The other end of the secondary lock rotating shaft is connected to one side of the secondary lock tongue through the secondary lock transmission assembly.

[0015] As a further technical solution of the present invention, the auxiliary lock transmission assembly includes an auxiliary lock transmission gear and an auxiliary lock transmission rack. The auxiliary lock transmission gear is coaxially fixed on the other end of the auxiliary lock rotating shaft, and the auxiliary lock transmission gear meshes with the auxiliary lock transmission rack fixed on the side wall of the auxiliary lock tongue.

[0016] Compared with the prior art, the beneficial effects of the present invention are: The main locking mechanism and two auxiliary locking mechanisms can simultaneously engage with the lock holes on the locking seat to achieve three-point locking of the door (top, middle, and bottom). This solves the technical defects of existing technologies where single-point locking results in uneven force distribution and susceptibility to forced prying, creating gaps for electricity theft. It ensures uniform force distribution on the door, reduces deformation during forced prying, and prevents the formation of operable spaces for electricity theft, significantly improving the door's anti-pry performance. The main locking mechanism drives the two auxiliary locking mechanisms to work synchronously in opposite directions via a synchronous transmission component, thereby disengaging the main locking mechanism, the two auxiliary locking mechanisms, and the lock holes on the locking seat, achieving synchronous unlocking of the door (top, middle, and bottom). This solves the defects of existing technologies where multiple lock tongues require independent unlocking operations, which are cumbersome and require multiple operations. A single rotation of a single mechanical lock can achieve synchronous unlocking of all three points, significantly improving unlocking efficiency, greatly shortening the operation time for high-altitude maintenance, and reducing the safety risks of high-altitude operations. The anti-pry self-locking mechanism not only restores the circumferential rotation restriction of the secondary locking mechanism after unlocking, but also restricts the circumferential rotation of the primary locking mechanism. This solves the shortcomings of existing technologies where the primary and secondary locking mechanisms can freely extend and retract after the door is opened, easily causing rigid collisions and damage to the enclosure or contact frame, and easily scratching maintenance personnel. On the one hand, it avoids deformation or breakage caused by accidental extension of the primary and secondary locking mechanisms, extending their service life; on the other hand, it eliminates the safety hazard of the primary and secondary locking mechanisms scratching operators during high-altitude maintenance, comprehensively improving maintenance safety. Furthermore, it can restrict the circumferential rotation of the secondary locking mechanism when the door is forcibly pried open, allowing the secondary locking mechanism to... Both the main and secondary locking mechanisms are rendered inoperable, addressing the industry pain points of existing technologies where electrical control failure results in loss of protection, and anti-pry structures can only lock a single bolt or have obvious vulnerabilities. This achieves instantaneous and comprehensive self-locking protection against illegal prying. Even if the mechanical actuator is powered off, the wiring is damaged, or the electronic warning system is magnetically shielded, the secondary and secondary locking mechanisms can be completely locked from a mechanical structure perspective. Even if electricity thieves completely destroy the lock cylinder of the mechanical lock, they will not be able to drive the main and secondary locking mechanisms to operate, and the box door cannot be opened. This eliminates the possibility of violent prying for electricity theft at the source, achieving dual redundancy protection of electrical control warning and mechanical hard protection, further improving the anti-theft and anti-electricity theft performance of the metering box.

[0017] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a first-view structural diagram of a remote meter reading type electricity metering box based on the Internet of Things provided in an embodiment of the present invention.

[0019] Figure 2 This is a second-view structural diagram of a remote meter reading type electricity metering box based on the Internet of Things provided in an embodiment of the present invention.

[0020] Figure 3 for Figure 2 A side view of the structure of the middle box door and its mounting mechanism.

[0021] Figure 4 for Figure 3 A schematic diagram of the main locking mechanism, auxiliary locking mechanism, mechanical actuator, and anti-pry self-locking mechanism.

[0022] Figure 5 for Figure 4 A schematic diagram of the main locking mechanism and the mechanical actuator.

[0023] Figure 6 for Figure 5 A schematic diagram of the assembly of the central main locking mechanism and the mechanical actuator.

[0024] Figure 7 for Figure 6 A side view of the structure of a mechanical actuator.

[0025] Figure 8 for Figure 7 Enlarged view of the structure at point A in the middle.

[0026] Figure 9 for Figure 4 Schematic diagram of the middle locking mechanism and the anti-pry self-locking mechanism.

[0027] Figure 10 for Figure 9 Side view of the anti-pry self-locking mechanism.

[0028] Figure 11 for Figure 10 Enlarged view of the structure of the self-locking component.

[0029] Figure 12 for Figure 10 A magnified view of the structure of the trigger component.

[0030] Reference numerals: 100-Box body, 110-Box door, 120-Mechanical lock, 130-Side guide rail, 140-Contact frame, 150-Locking seat, 160-Magnetic element, 200-Enclosed box, 300-Main lock mechanism, 310-Main lock tongue, 311-Main lock slide, 320-Main lock shaft, 330-Main lock transmission assembly, 331-Main lock transmission rack, 332-Main lock transmission gear, 333-Locking hole, 400-Secondary lock mechanism, 410-Secondary lock tongue, 411-Secondary lock slide, 420-Secondary lock shaft, 430-Secondary lock transmission assembly, 431-Secondary lock transmission gear, 432-Secondary lock transmission rack, 500-Mechanical Actuator, 510-Mounting plate, 520-Electromagnetic push rod, 530-T-type locking block, 540-Elastic correction component, 541-Trapezoidal correction plate, 542-Fixing stud, 543-Correction spring, 600-Anti-pry self-locking mechanism, 610-Self-locking component, 611-Ratchet, 612-Pawl, 613-Mounting base, 614-Self-locking spring, 615-Side support plate, 620-Lever, 630-Trigger component, 631-Returning lever, 632-Trigger slider, 633-Trigger slide, 634-Trigger spring, 635-Extension slider, 636-Trigger top block, 637-Reset spring, 700-Synchronous transmission component. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0032] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0033] like Figures 1 to 12 As shown, an embodiment of the present invention provides a remote meter reading electricity metering box based on the Internet of Things, including a box body 100 with an opening at the front, a box door 110 hinged to the edge of the opening of the box body 100, a contact frame 140 fixed to the inner wall of the box body 100 and abutting against the inner end face of the box door 110, a side guide rail 130 fixed to the non-hinged side wall of the box door 110, a mechanical lock 120 installed on the box door 110 and extending to its outer side, an electricity meter mounting base fixed inside the box body 100, and an Internet of Things remote meter reading module integrated on the box body 100. A closed box 200 is fixed to the inner end face of the box door 110, the closed box 200 being composed of a closed shell and a closed base plate. Magnetic suction elements 160 that attract each other are fixed to the contact frame 140 and the inner end face of the box door 110. The box also includes: The mechanical locking mechanism comprises a main locking mechanism 300, two auxiliary locking mechanisms 400, a mechanical actuator 500, an anti-pry self-locking mechanism 600, and a synchronous transmission component 700. The main locking mechanism 300 is horizontally installed in the middle of the closed base plate. The power input end of the main locking mechanism 300 is coaxially fixed to the lock cylinder of the mechanical lock 120. The two auxiliary locking mechanisms 400 are symmetrically installed horizontally at the upper and lower ends of the closed base plate along the main locking mechanism 300. One end of the main locking mechanism 300 and the two auxiliary locking mechanisms 400 penetrates the closed housing and cooperates with the locking seat 150 fixed on the inner wall of the housing 100. The locking seat 150 has a vertically opened lock hole that cooperates with the main locking mechanism 300 and the two auxiliary locking mechanisms 400. The main locking mechanism 300 is connected to the two auxiliary locking mechanisms 400 respectively through the synchronous transmission component 700. The mechanical actuator 500 is mounted on the closed base plate and located on one side of the main locking mechanism 300. One end of the mechanical actuator 500 is coaxially arranged with the main locking mechanism 300 and intermittently cooperates with the locking holes 333 arranged circumferentially on the main locking mechanism 300. The control end of the mechanical actuator 500 is electrically connected to the Internet of Things remote meter reading module. The anti-pry self-locking mechanism 600 consists of a self-locking component 610, a lever 620, and a triggering component 630. One end of the self-locking component 610 is coaxially connected to the secondary locking mechanism 400, and the other end of the self-locking component 610 is mounted on the closed base plate. A lever 620 perpendicular to the door 110 is fixed on the side of the self-locking component 610 near the closed base plate. The end of the lever 620 is slidably engaged with the transmission end of the triggering component 630. The transmission end of the triggering component 630 is slidably mounted on the closed base plate. The triggering end of the triggering component 630 is perpendicular to the side guide rail 130 and is elastically slidably mounted on the side guide rail 130. The triggering end of the triggering component 630 intermittently abuts against the contact frame 140. The transmission end and the triggering end of the triggering component 630 are linked through an inclined plane transmission structure. When the door 110 is closed and its magnetic attractor 160 attracts the magnetic attractor 160 on the contact frame 140, the two attracting magnetic attractors 160 can cause the inner end face of the door 110 to fit tightly against the contact frame 140. The contact frame 140 can press the trigger end of the trigger assembly 630, causing it to be hidden inside the side guide rail 130. At the same time, the trigger end of the trigger assembly 630 drives its transmission end to move horizontally. The transmission end of the trigger assembly 630 can drive the lever 620 to rotate by moving horizontally. The rotation of the locking mechanism 610 releases the circumferential rotation restriction on the secondary locking mechanism 400, thereby releasing the circumferential rotation restriction on the main locking mechanism 300. The lock cylinder of the mechanical lock 120 drives the main locking mechanism 300 to work. The main locking mechanism 300, through the synchronous transmission component 700, can drive the two secondary locking mechanisms 400 to work synchronously. This allows the main locking mechanism 300 and the two secondary locking mechanisms 400 to simultaneously engage with the lock holes on the locking seat 150, thus completing the three-point locking of the door 110 (top, middle, and bottom), solving the problem of single-point locking in the prior art. The technical defects of uneven force distribution and susceptibility to forced prying, creating gaps for electricity theft, are addressed by ensuring uniform force distribution on the door 110. This reduces deformation during forced prying, preventing the formation of operable spaces for electricity theft and significantly improving the anti-pry performance of the door 110. After the main locking mechanism 300 and the auxiliary locking mechanism 400 lock the door 110, the IoT remote meter reading module receives the locking completion signal and controls the mechanical actuator 500 to power on. The mechanical actuator 500 can cooperate with the locking hole 333 on the main locking mechanism 300 to complete the locking. The circumferential rotation restriction of the main locking mechanism 300, in turn, restricts the circumferential rotation of the two auxiliary locking mechanisms 400, thereby achieving reliable locking and fixing of the door 110. This solves the defects of existing electronically controlled locks that directly drive the bolt, lose protection upon power failure, or are susceptible to electromagnetic interference. The electronically controlled mechanism does not directly participate in the extension and retraction of the bolt, but is only responsible for locking and releasing the transmission path. The locking core is still a purely mechanical structure, which greatly improves the locking stability. At the same time, it is linked with the Internet of Things module to achieve traceability of the locking status, perfectly adapting to the standardized management requirements of intelligent operation and maintenance of the power grid. When maintenance personnel need to remotely unlock the door, they send an authorized unlocking signal to the IoT remote meter reading module through the power grid maintenance backend. The IoT remote meter reading module then controls the mechanical actuator 500 to de-energize, separating it from the locking hole 333 and releasing the circumferential rotation restriction on the main locking mechanism 300. At this time, the maintenance personnel drive the lock cylinder to rotate via the mechanical lock 120 on the door 110. The lock cylinder drives the main locking mechanism 300 to work in one direction. The main locking mechanism 300 drives the two auxiliary locking mechanisms 400 to work in opposite directions synchronously via the synchronous transmission component 700, thereby releasing the connection between the main locking mechanism 300, the two auxiliary locking mechanisms 400, and the locking hole on the locking seat 150. This completes the synchronous unlocking of the door 110 at three points (top, middle, and bottom), solving the problem of cumbersome and multiple-operation unlocking operations caused by multiple independent driving of multiple lock tongues in existing technologies. A single rotation of the mechanical lock 120 can complete the synchronous unlocking of the three points, significantly improving unlocking efficiency, greatly shortening the operation time of high-altitude maintenance, and reducing the safety risks of high-altitude operations. After unlocking, the door 110... 10 opens and separates from the contact frame 140. The trigger end of the trigger component 630 protrudes outside the side guide rail 130 under its own elastic force, and drives its transmission end to move horizontally in the opposite direction. This allows the transmission end of the trigger component 630 to drive the lever 620 to rotate in the opposite direction. The lever 620 can drive the self-locking component 610 to restore the circumferential rotation restriction on the secondary lock mechanism 400 through the reverse rotation, thereby completing the circumferential rotation restriction on the main lock mechanism 300. This solves the defects in the prior art where the main lock mechanism 300 and the secondary lock mechanism 400 can freely extend and retract after the box door 110 is opened, and are prone to rigid collision damage with the box body 100 or the contact frame 140, as well as easily scratching maintenance personnel. On the one hand, it avoids deformation or breakage caused by the accidental extension of the main lock mechanism 300 and the secondary lock mechanism 400, and extends the service life of the main lock mechanism 300 and the secondary lock mechanism 400. On the other hand, it eliminates the safety hazard of the main lock mechanism 300 and the secondary lock mechanism 400 scratching the operators during high-altitude maintenance, and comprehensively improves the safety of maintenance. When the door 110 is locked, if an abnormal situation occurs such as power failure of the mechanical actuator 500, wire cutting, or device malfunction, and the mechanical actuator 500 cannot properly lock the main locking mechanism 300 circumferentially, and if an electricity thief uses a forceful tool to pry open the edge of the door 110, causing deformation and gaps between the door 110 and the contact frame 140, the trigger component 630 can drive the self-locking component 610 through the lever 620. This allows the self-locking component 610 to restrict the circumferential rotation of the secondary locking mechanism 400, rendering both the secondary locking mechanism 400 and the main locking mechanism 300 inoperable. This solves the problem of electrical control failure in the prior art. Addressing the industry pain point that anti-theft and anti-pry structures can only lock a single bolt or have obvious vulnerabilities, this device achieves instantaneous and comprehensive self-locking protection against illegal prying. Even if the mechanical actuator 500 is de-energized, the wiring is damaged, or the electronic warning system is shielded by strong magnets, the auxiliary locking mechanism 400 and the main locking mechanism 300 can be completely locked mechanically. Even if the electricity thief completely destroys the lock cylinder of the mechanical lock 120, they will not be able to drive the main locking mechanism 300 and the auxiliary locking mechanism 400 to move, and the box door 110 cannot be opened. This eliminates the possibility of violent prying for electricity theft from the root cause, and achieves dual redundancy protection of electrical control warning and mechanical hard protection, further improving the anti-theft and anti-electricity theft performance of the metering box.

[0034] In a preferred embodiment, the synchronous transmission component 700 is preferably a synchronous belt transmission structure consisting of a synchronous belt and a synchronous pulley; the magnetic attraction component 160 is preferably a neodymium iron boron magnet with strong magnetic properties.

[0035] like Figures 3 to 11 As shown, in a preferred embodiment of the present invention, the self-locking assembly 610 includes a ratchet 611, a pawl 612, a mounting base 613, a self-locking spring 614, and a side support plate 615. The ratchet 611 is coaxially fixed on the secondary locking mechanism 400. The outer wall of the ratchet 611 has circumferentially distributed grooves that intermittently engage with the pawl 612. The opening direction of the grooves is consistent with the locking direction of the secondary locking mechanism 400. The pawl 612 is rotatably mounted on the closed base plate through the mounting base 613. The end face of the pawl 612 away from the ratchet 611 is connected to the mounting base 613 through the self-locking spring 614. The side support plate 615 is fixed on the end face of the pawl 612 near the transmission end of the trigger assembly 630. A lever 620 is vertically fixed on the side support plate 615.

[0036] When the trigger end of the trigger assembly 630 drives its transmission end to move horizontally, the transmission end of the trigger assembly 630 drives the side support plate 615 to rotate through the lever 620. The side support plate 615 drives the pawl 612 to rotate synchronously. By rotating, the pawl 612 can release or restore the rotation restriction on the ratchet 611, thereby releasing or restoring the circumferential rotation restriction on the secondary lock mechanism 400. When the pawl 612 resumes its rotational restriction on the ratchet 611, the circumferential rotational freedom of both the secondary locking mechanism 400 and the primary locking mechanism 300 is restricted. This not only prevents deformation or breakage caused by accidental extension of the primary and secondary locking mechanisms 300 and 400, extending their service life, and eliminating the safety hazard of the primary and secondary locking mechanisms 300 and 400 scratching operators during high-altitude maintenance, thus comprehensively improving the safety of maintenance; it also allows for instantaneous and comprehensive detection of unauthorized prying. Self-locking protection ensures that even if the mechanical actuator 500 is de-energized, the wiring is damaged, or the electronic warning system is shielded by strong magnets, the auxiliary locking mechanism 400 and the main locking mechanism 300 can be completely locked from the mechanical structure. Even if the electricity thief completely destroys the lock cylinder of the mechanical lock 120, the main locking mechanism 300 and the auxiliary locking mechanism 400 cannot be driven to move, and the box door 110 cannot be opened. This eliminates the possibility of violent prying to steal electricity from the root, and achieves dual redundancy protection of electrical control warning and mechanical hard protection, further improving the anti-theft and anti-electricity theft performance of the metering box. When the pawl 612 releases its restriction on the rotation of the ratchet 611, the circumferential rotational freedom of both the secondary locking mechanism 400 and the main locking mechanism 300 is released. At this time, the door 110 is in a normally closed state. The maintenance personnel drive the main locking mechanism 300 and the two secondary locking mechanisms 400 to work synchronously through the mechanical lock 120 on the door 110, releasing the connection between the main locking mechanism 300, the two secondary locking mechanisms 400 and the locking hole on the locking seat 150, and completing the synchronous unlocking of the door 110 at the top, middle and bottom. This solves the problem of the cumbersome operation and the need for multiple operations required by the independent driving of multiple lock tongues in the existing technology. A single rotation of the mechanical lock 120 can complete the synchronous unlocking of the three points, which significantly improves the unlocking efficiency, greatly shortens the operation time of high-altitude maintenance, and reduces the safety risks of high-altitude operations.

[0037] like Figures 3 to 12As shown, in a preferred embodiment of the present invention, the trigger assembly 630 includes a loop block 631, a trigger slider 632, a trigger slide block 633, a trigger spring 634, an extension slider 635, a trigger top block 636, and a return spring 637. The loop block 631 is parallel to the ratchet 611 and fixed on the trigger slider 632. The inner end face of the loop block 631 slides in cooperation with the outer end face of the lever 620. The trigger slider 632 is horizontally slidably mounted on the closed base plate via the trigger slide block 633. The trigger slider 632 is located near the side guide rail. An extension slider 635 is fixed on one side of the 130. A trigger spring 634 is installed between the side of the trigger slider 632 away from the side guide rail 130 and the inner wall of the trigger slide 633. One end of the extension slider 635 is linked to the top of the trigger top block 636 through an inclined transmission structure. The trigger top block 636 is perpendicular to the door 110 and is slidably installed in the side guide rail 130. A return spring 637 is installed between the bottom of the trigger top block 636 and the bottom of the side guide rail 130. The top of the trigger top block 636 intermittently abuts against the contact frame 140.

[0038] The initial preload of the reset spring 637 is greater than the initial preload of the trigger spring 634. The initial preload of the reset spring 637 is less than the magnetic attraction between the two magnetic attractors 160. The initial preload of the trigger spring 634 is greater than the initial preload of the self-locking spring 614.

[0039] When the contact block 140 pushes the trigger block 636, the trigger block 636 moves inward toward the side guide rail 130, and drives the extension slider 635 to move toward the side guide rail 130 via the inclined plane transmission structure. The extension slider 635 cooperates with the trigger spring 634 and drives the trigger slider 632 to move toward the side guide rail 130. The trigger slider 632 drives the lever 620 to rotate via the loop block 631, so that the lever 620 can drive the pawl 612 to release the rotation restriction on the ratchet 611. At this time, the circumferential rotational freedom of the secondary locking mechanism 400 and the main locking mechanism 300 are both released. At this time, the door 110 is in a normally closed state. The maintenance personnel drive the main locking mechanism 300 and the two auxiliary locking mechanisms 400 to work synchronously through the mechanical lock 120 on the door 110, and release the connection between the main locking mechanism 300, the two auxiliary locking mechanisms 400 and the locking hole on the locking seat 150. This completes the synchronous unlocking of the door 110 at the top, middle and bottom points. This solves the problem of the cumbersome operation and the need for multiple operations in the existing technology where multiple lock tongues are independently driven to unlock. A single rotation of the mechanical lock 120 can complete the synchronous unlocking of the three points, which significantly improves the unlocking efficiency, greatly shortens the operation time of high-altitude maintenance, and reduces the safety risks of high-altitude operations. When there is a gap between the contact frame 140 and the door 110, the trigger spring 634 pushes the trigger block 636, which can move outward from the side guide rail 130. Through the inclined plane transmission structure, it drives the extension slider 635 to move away from the side guide rail 130. The extension slider 635 cooperates with the trigger spring 634 to drive the trigger slider 632 to move away from the side guide rail 130. The trigger slider 632 drives the lever 620 to rotate via the loop block 631, allowing the lever 620 to drive the pawl 612 to restore its rotational restriction on the ratchet 611. At this time, the circumferential rotational freedom of both the secondary locking mechanism 400 and the main locking mechanism 300 is restricted. This not only avoids deformation or breakage caused by accidental extension of the main locking mechanism 300 and the secondary locking mechanism 400, but also prevents these mechanisms from being accidentally extended. Extending the service life of the main locking mechanism 300 and the auxiliary locking mechanism 400 eliminates the safety hazard of the main locking mechanism 300 and the auxiliary locking mechanism 400 scratching operators during high-altitude maintenance, and comprehensively improves the safety of operation and maintenance; it can also achieve instantaneous and blind-spot-free self-locking protection in the event of illegal prying. Even if the mechanical actuator 500 is de-energized, the line is damaged, or the electronic early warning system is shielded by strong magnetism, the auxiliary locking mechanism 400 and the main locking mechanism 300 can be completely locked from the mechanical structure. Even if the electricity thief completely destroys the lock cylinder of the mechanical lock 120, it will not be able to drive the main locking mechanism 300 and the auxiliary locking mechanism 400 to move, and the box door 110 cannot be opened. It eliminates the possibility of violent prying to steal electricity from the root and realizes dual redundancy protection of electrical control early warning and mechanical hard protection, further improving the anti-theft and anti-electricity theft performance of the metering box.

[0040] like Figures 2 to 9 As shown, in a preferred embodiment of the present invention, the main lock mechanism 300 includes a main lock tongue 310, a main lock slide 311, a main lock rotating shaft 320, and a main lock transmission assembly 330. The main lock tongue 310 is horizontally slidably mounted in the middle of the closed base plate via the main lock slide 311. The front end of the main lock tongue 310 penetrates the closed housing and engages with the lock hole on the locking seat 150. The main lock rotating shafts 320 are symmetrically arranged at the upper and lower ends of the main lock tongue 310, one of which engages with a mechanical lock. The lock cylinder of 120 is coaxially fixed. The main lock shaft 320 is rotatably mounted on the closed base plate. One end of the main lock shaft 320 is connected to the auxiliary lock mechanism 400 through the synchronous transmission component 700. The other end of the main lock shaft 320 is fixed with a mechanical actuator 500 that intermittently cooperates with the locking hole 333 on the main lock transmission assembly 330. The middle part of the main lock shaft 320 is coaxially fixed to one end of the main lock transmission assembly 330. The other end of the main lock transmission assembly 330 is connected to the side wall of the main lock tongue 310. The main lock transmission assembly 330 includes a main lock transmission rack 331 and a main lock transmission gear 332. The main lock transmission rack 331 is symmetrically fixed on the side walls at the upper and lower ends of the main lock tongue 310. One side of each of the two main lock transmission racks 331 is meshed with a main lock transmission gear 332. The two main lock transmission gears 332 are coaxially fixed to two main lock shafts 320 respectively. The end faces of the two main lock transmission gears 332 are circumferentially and equidistantly provided with locking holes 333 that are clearance-fitted with the mechanical actuator 500.

[0041] The lock cylinder of the mechanical lock 120 can drive a main lock shaft 320 fixed to it to rotate. The main lock shaft 320, through the main lock transmission assembly 330 and the main lock tongue 310, can drive another main lock shaft 320 to rotate. The two main lock shafts 320, through the synchronous transmission component 700, can drive the two auxiliary lock mechanisms 400 to work synchronously. This allows the main lock tongue 310 and the two auxiliary lock mechanisms 400 to simultaneously complete the three-point locking of the door 110 (top, middle, and bottom), solving the problem of uneven force distribution and susceptibility to forced entry in the single-point locking of the existing technology. The technical defects that create gaps for electricity theft are eliminated, allowing the entire box door 110 to be subjected to uniform force, reducing deformation during violent prying, and preventing the formation of operable spaces for electricity theft, thus significantly improving the anti-pry performance of the box door 110. It can also achieve simultaneous unlocking of the box door 110 at the top, middle and bottom, solving the defects of existing technologies where multiple lock tongues are independently driven for unlocking, which is cumbersome and requires multiple operations. A single rotation of the single mechanical lock 120 can complete the simultaneous unlocking of the three points, significantly improving unlocking efficiency, greatly shortening the operation time of high-altitude maintenance, and reducing the safety risks of high-altitude operations.

[0042] like Figures 2 to 9 As shown, in a preferred embodiment of the present invention, the mechanical actuator 500 includes a mounting plate 510, an electromagnetic push rod 520, a T-shaped locking block 530, and an elastic correction component 540. The mounting plate 510 is fixed on a closed base plate and coaxially arranged with the main lock shaft 320. An electromagnetic push rod 520 is vertically fixed on the side of the mounting plate 510 near the main lock transmission gear 332. The electromagnetic push rod 520 is electrically connected to the Internet of Things remote meter reading module. A T-shaped locking block 530 is coaxially fixed on the power output end of the electromagnetic push rod 520. Elastic correction components 540 are symmetrically installed on both sides of the T-shaped locking block 530. Both the T-shaped locking block 530 and the elastic correction component 540 are intermittently engaged with the locking hole 333. The elastic correction component 540 includes a trapezoidal correction plate 541, a fixing stud 542, and a correction spring 543. The trapezoidal correction plate 541 is radially slidably mounted on both sides of the T-shaped locking block 530. The two sides of the trapezoidal correction plate 541 are radially slidably connected to the fixing stud 542 fixed on the side wall of the T-shaped locking block 530. A correction spring 543 is installed between the middle part of the trapezoidal correction plate 541 and the T-shaped locking block 530.

[0043] After the main locking mechanism 300 and the auxiliary locking mechanism 400 lock the box door 110, the IoT remote meter reading module receives the locking completion signal and controls the electromagnetic push rod 520 to be energized. The energized electromagnetic push rod 520 drives the T-shaped locking block 530 to move axially towards the locking hole 333, so that the T-shaped locking block 530 and the elastic correction component 540 can extend into the locking hole 333 and cooperate with it, thereby completing the circumferential rotation restriction of the main locking mechanism 300, and then completing the circumferential rotation restriction of the two auxiliary locking mechanisms 400, realizing the reliable locking and fixing of the box door 110. This solves the defects of existing electric control locks that directly drive the lock tongue, lose protection when power is cut off, or are susceptible to electromagnetic interference failure. The electric control mechanism does not directly participate in the extension and retraction drive of the lock tongue, but is only responsible for locking and releasing the transmission path. The locking core is still a pure mechanical structure, which greatly improves the locking stability. At the same time, it is linked with the IoT module to realize the traceability of the locking status, perfectly adapting to the standardized management requirements of intelligent operation and maintenance of the power grid. When the main lock drive gear 332 stops rotating, and there is a slight coaxiality deviation between the axis of the locking hole 333 and the output axis of the electromagnetic push rod 520, during the synchronous forward movement of the T-shaped locking block 530 driven by the electromagnetic push rod 520, the guide slope of the trapezoidal correction piece 541 will abut against the edge end of the locking hole 333 before the small diameter section of the T-shaped locking block 530. As the electromagnetic push rod 520 continues to output axial thrust, the contact force between the guide slope and the edge of the locking hole 333 will be decomposed into radial and circumferential components. The circumferential component will push the main lock drive gear 332. Rotating the main locking shaft 320 by a certain angle causes the locking hole 333 to automatically deflect to a position completely coaxial with the output shaft of the electromagnetic push rod 520, thus completely eliminating coaxiality deviation. At this time, the small-diameter locking section of the T-shaped locking block 530 can be smoothly inserted into the locking hole 333 without obstruction or impact, completing the locking action. This improves the reliability of the locking mechanism, completely solves the industry pain point of locking pin jamming, jamming, or inability to be inserted caused by coaxiality deviation, avoids the electromagnetic push rod 520 burning out due to stalling, significantly reduces the failure rate of the mechanism, and extends the service life of the mechanism.

[0044] like Figures 2 to 9As shown, in a preferred embodiment of the present invention, the secondary lock mechanism 400 includes a secondary lock tongue 410, a secondary lock slide 411, and a secondary lock transmission assembly 430. The secondary lock tongue 410 is horizontally slidably mounted on the upper and lower ends of the closed base plate via the secondary lock slide 411, and the secondary lock tongue 410 is parallel to the main lock tongue 310. One end of the secondary lock tongue 410 engages with the lock hole on the locking seat 150. A secondary lock rotating shaft 420 is provided on one side of the secondary lock tongue 410. The secondary lock rotating shaft 420 is rotatably mounted on the closed base plate. One end of the secondary lock rotating shaft 420 is connected to the main lock rotating shaft 320 via a synchronous transmission member 700. A ratchet 611 is coaxially fixed to the middle of the secondary lock rotating shaft 420. The other end of the secondary lock rotating shaft 420 is connected to one side of the secondary lock tongue 410 via the secondary lock transmission assembly 430. The secondary lock transmission assembly 430 includes a secondary lock transmission gear 431 and a secondary lock transmission rack 432. The secondary lock transmission gear 431 is coaxially fixed on the other end of the secondary lock rotating shaft 420, and the secondary lock transmission gear 431 meshes with the secondary lock transmission rack 432 fixed on the side wall of the secondary lock tongue 410.

[0045] When the main lock shaft 320 rotates, the two main lock shafts 320 can drive the two auxiliary lock shafts 420 to rotate synchronously via the synchronous transmission component 700. The auxiliary lock shafts 420 drive the auxiliary lock transmission gear 431 and ratchet 611 to rotate synchronously. The auxiliary lock transmission gear 431 can drive the auxiliary lock tongue 410 to move via the auxiliary lock transmission rack 432, so that the two auxiliary lock tongues 410 cooperate with the main lock tongue 310. This not only allows for the synchronous locking of the door 110 at the top, middle and bottom, but also solves the problem of uneven force distribution and susceptibility to forced prying in the existing single-point locking technology. The technical defect of creating gaps for electricity theft is eliminated, allowing the entire box door 110 to be subjected to uniform force, reducing deformation during violent prying, and preventing the formation of operable spaces for electricity theft, thus significantly improving the anti-pry performance of the box door 110. It can also achieve simultaneous unlocking of the box door 110 at the top, middle and bottom, solving the defects of the existing technology where multiple lock tongues are independently driven for unlocking, which is cumbersome and requires multiple operations. A single rotation of the single mechanical lock 120 can complete the simultaneous unlocking of the three points, significantly improving the unlocking efficiency, greatly shortening the operation time of high-altitude maintenance, and reducing the safety risks of high-altitude operations.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A remote meter reading type electric energy metering box based on Internet of Things, comprising a box body, a box door, a contact square box, a side guide rail, a mechanical lock, an electric energy meter mounting seat, an Internet of Things remote meter reading module and a closing box, the closing box is composed of a closing shell and a closing bottom plate, the contact square box and the inner side end face of the box door are fixed with magnetic attraction members that attract each other, characterized in that, Also includes: The mechanical locking mechanism comprises a main locking mechanism, two auxiliary locking mechanisms, a mechanical actuator, an anti-pry self-locking mechanism, and a synchronous transmission component. The main locking mechanism is horizontally installed in the middle of the enclosed base plate, and its power input end is coaxially fixed to the lock cylinder of the mechanical lock. The two auxiliary locking mechanisms are symmetrically installed horizontally at the upper and lower ends of the enclosed base plate along the main locking mechanism. One end of the main locking mechanism and the two auxiliary locking mechanisms penetrates the enclosed housing and cooperates with a locking seat fixed on the inner wall of the housing. The locking seat has a lock hole that cooperates with the main locking mechanism and the two auxiliary locking mechanisms. The main locking mechanism is connected to the two auxiliary locking mechanisms respectively through the synchronous transmission component. The mechanical actuator is mounted on the closed base plate and located on one side of the main locking mechanism. One end of the mechanical actuator is coaxially arranged with the main locking mechanism and intermittently engages with the locking holes arranged equidistantly around the main locking mechanism. The control end of the mechanical actuator is electrically connected to the Internet of Things remote meter reading module. The anti-pry self-locking mechanism consists of a self-locking component, a lever, and a triggering component. One end of the self-locking component is coaxially connected to the secondary lock mechanism, and the other end of the self-locking component is mounted on the closed base plate. A lever perpendicular to the door is fixed on the side of the self-locking component near the closed base plate. The end of the lever is slidably engaged with the transmission end of the triggering component. The transmission end of the triggering component is slidably mounted on the closed base plate. The triggering end of the triggering component is perpendicular to the side guide rail and is elastically slidably mounted on the side guide rail. The triggering end of the triggering component intermittently abuts against the contact frame. The transmission end and the triggering end of the triggering component are linked through an inclined plane transmission structure.

2. The IoT-based remote meter reading type energy metering box according to claim 1, characterized in that, The self-locking assembly includes a ratchet, a pawl, a mounting base, a self-locking spring, and a side support plate. The ratchet is coaxially fixed on the secondary locking mechanism. The outer wall of the ratchet has circumferentially distributed grooves that intermittently engage with the pawl. The opening direction of the grooves is consistent with the locking direction of the secondary locking mechanism. The pawl is rotatably mounted on the closed base plate via the mounting base. The end face of the pawl away from the ratchet is connected to the mounting base via the self-locking spring. A side support plate is fixed on the end face of the pawl near the transmission end of the trigger assembly. A lever is vertically fixed on the side support plate.

3. The IoT-based remote meter reading type energy metering box according to claim 2, characterized in that, The trigger assembly includes a loop-shaped lever, a trigger slider, a trigger slide block, a trigger spring, an extension slider, a trigger top block, and a return spring. The loop-shaped lever is parallel to the ratchet and fixed to the trigger slider. The inner end face of the loop-shaped lever is slidably engaged with the outer end face of the lever. The trigger slider is horizontally slidably mounted on the closed base plate via the trigger slide block. An extension slider is fixed to the side of the trigger slider near the side guide rail. A trigger spring is installed between the side of the trigger slider away from the side guide rail and the inner wall of the trigger slide block. One end of the extension slider is linked to the top of the trigger top block via an inclined plane transmission structure. The trigger top block is perpendicular to the door and slidably mounted within the side guide rail. A return spring is installed between the bottom of the trigger top block and the bottom of the side guide rail. The top of the trigger top block intermittently abuts against the contact frame.

4. The IoT-based remote meter reading type energy metering box according to claim 3, characterized in that, The initial preload of the reset spring is greater than the initial preload of the trigger spring, the initial preload of the reset spring is less than the magnetic attraction between the two magnetic components, and the initial preload of the trigger spring is greater than the initial preload of the self-locking spring.

5. The IoT-based remote meter reading type energy metering box according to claim 1, characterized in that, The main locking mechanism includes a main lock tongue, a main lock slide, a main lock shaft, and a main lock transmission assembly. The main lock tongue is horizontally slidably mounted in the middle of the enclosed base plate via the main lock slide. The front end of the main lock tongue penetrates the enclosed housing and mates with the lock hole on the locking seat. The upper and lower ends of the main lock tongue are symmetrically provided with main lock shafts. One of the main lock shafts is coaxially fixed to the lock cylinder of the mechanical lock. The main lock shaft is rotatably mounted on the enclosed base plate. One end of the main lock shaft is connected to the auxiliary locking mechanism through a synchronous transmission component. The other end of the main lock shaft is fixed with a mechanical actuator that intermittently mates with the locking hole on the main lock transmission assembly. The middle part of the main lock shaft is coaxially fixed to one end of the main lock transmission assembly, and the other end of the main lock transmission assembly is connected to the side wall of the main lock tongue.

6. The IoT-based remote meter reading type energy metering box according to claim 5, characterized in that, The main lock transmission assembly includes a main lock transmission rack and a main lock transmission gear. The main lock transmission rack is symmetrically fixed on the side walls at both ends of the main lock tongue. One side of each of the two main lock transmission racks is meshed with a main lock transmission gear. The two main lock transmission gears are coaxially fixed to two main lock shafts respectively. The end faces of the two main lock transmission gears are circumferentially and equidistantly provided with locking holes that are clearance-fitted with the mechanical actuator.

7. The IoT-based remote meter reading type energy metering box according to claim 6, characterized in that, The mechanical actuator includes a mounting plate, an electromagnetic push rod, a T-shaped locking block, and an elastic correction component. The mounting plate is fixed on a closed base plate and coaxially arranged with the main lock shaft. An electromagnetic push rod is vertically fixed on the side of the mounting plate near the main lock transmission gear. The electromagnetic push rod is electrically connected to the IoT remote meter reading module. A T-shaped locking block is coaxially fixed on the power output end of the electromagnetic push rod. Elastic correction components are symmetrically installed on both sides of the T-shaped locking block. Both the T-shaped locking block and the elastic correction component are intermittently engaged with the locking hole.

8. The IoT-based remote meter reading type energy metering box according to claim 7, characterized in that, The elastic correction assembly includes a trapezoidal correction plate, a fixing stud, and a correction spring. The trapezoidal correction plate is radially slidably mounted on both sides of the T-shaped locking block. The two sides of the trapezoidal correction plate are radially slidably connected to the fixing stud fixed on the side wall of the T-shaped locking block. A correction spring is installed between the middle of the trapezoidal correction plate and the T-shaped locking block.

9. The IoT-based remote meter reading type energy metering box according to claim 5, characterized in that, The secondary lock mechanism includes a secondary lock tongue, a secondary lock slide, and a secondary lock transmission assembly. The secondary lock tongue is horizontally slidably mounted on the upper and lower ends of the enclosed base plate via the secondary lock slide, and the secondary lock tongue is parallel to the main lock tongue. One end of the secondary lock tongue engages with a lock hole on the locking seat. A secondary lock shaft is provided on one side of the secondary lock tongue. The secondary lock shaft is rotatably mounted on the enclosed base plate. One end of the secondary lock shaft is connected to the main lock shaft via a synchronous transmission component. A ratchet is coaxially fixed to the middle of the secondary lock shaft. The other end of the secondary lock shaft is connected to one side of the secondary lock tongue via the secondary lock transmission assembly.

10. The IoT-based remote meter reading type energy metering box according to claim 9, characterized in that, The auxiliary lock transmission assembly includes an auxiliary lock transmission gear and an auxiliary lock transmission rack. The auxiliary lock transmission gear is coaxially fixed on the other end of the auxiliary lock shaft, and the auxiliary lock transmission gear meshes with the auxiliary lock transmission rack fixed on the side wall of the auxiliary lock tongue.

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