Meter box safety guard device

Abstract

The invention relates to a safety guard device for a meter box, which belongs to the technical field of power system equipment and comprises a meter box body, a meter box cover, a control unit and a locking unit. The control unit is installed in the meter box body, the control unit comprises an MCU control module, a wireless communication module, an alternating current and direct current voltage conversion module, a power supply storage module and a UPS uninterrupted power supply module, the UPS uninterrupted power supply module is used for supplying power to the MCU control module, meanwhile, the UPS uninterrupted power supply module is used for monitoring the electric quantity of the power supply storage module, and the power supply storage module is used for supplying power to the MCU control module. When the electric quantity of the power supply storage module is smaller than a preset threshold value, the UPS uninterruptible power supply module charges the power supply storage module, and when the UPS uninterruptible power supply module monitors that the mains supply input end is powered off, the UPS uninterruptible power supply module is immediately switched to the power supply storage module to supply power. The use safety of the electric meter box can be improved, remote monitoring can be achieved, and the requirement that the electric meter box is not opened without operation is met.

Description

Technical Field

[0001] The invention relates to a meter box safety protection device, belonging to the technical field of power system equipment. Background Art

[0002] As an important part of power metering, the current meter box plays a key role in the power grid system. The traditional meter box is mainly responsible for connecting the user's electrical equipment and the power grid, and is used to install metering instruments such as energy meters and switchgear to achieve functions such as power metering and circuit control.

[0003] At present, the common problems of meter boxes that are widely produced on the market and widely used on site are mainly:

[0004] 1. Poor monitoring capability for unexpected situations, insufficient safety protection measures, and easy to be illegally invaded and damaged;

[0005] 2. The maintenance cost is high. Faults need to be checked one by one, and the troubleshooting efficiency is low.

[0006] If you want to replace the meter box with a more advanced one, you need to shut down the power and replace the entire meter box. This not only requires a lot of on-site work and is expensive, but it is also difficult to promote and use on a large scale.

[0007] A protective electric meter box disclosed in a Chinese utility model patent with announcement number CN213337770U includes a protective box body and an electric meter mounting mechanism arranged in the protective box body; an installation cavity for accommodating the electric meter body is provided inside the protective box body, and an inspection and installation port communicating with the installation cavity is provided on the outer side of the protective box body; the electric meter mounting mechanism includes a mounting plate and a slide rail.

[0008] The above-mentioned reference example protects the electric meter body through a protective box. If an unexpected situation occurs in the electric meter, it cannot be discovered in time and the monitoring capability is poor. Therefore, improvement is urgently needed. Summary of the invention

[0009] In order to overcome the above-mentioned shortcomings of the prior art, the present invention designs a meter box safety protection device, which can improve the safety of the meter box and realize remote monitoring, meeting the requirement that the meter box must not be opened for operation.

[0010] In order to achieve the above object, the present invention adopts the following technical solution:

[0011] A meter box safety guard device comprises a meter box body and a meter box cover installed on the meter box body, and also comprises a control unit and a locking unit for locking the meter box cover;

[0012] The control unit is installed inside the meter box body, and the control unit includes:

[0013] MCU control module: electrically connected to the locking unit, used to receive a control instruction containing an authorization key and control the locking unit to open or close according to the control instruction;

[0014] Wireless communication module: wirelessly connected to the MCU control module, the wireless communication module is used to transmit the control instruction containing the authorization key from the external device to the MCU control module, and feed back the internal state information of the meter box collected by the MCU control module to the external device;

[0015] AC / DC voltage conversion module: connected to the power input terminal of the mains electric energy meter, used to convert the AC power input from the mains into DC power;

[0016] Power storage module: used to store or release electrical energy;

[0017] UPS uninterruptible power supply module: electrically connected to the AC / DC voltage conversion module, the power storage module and the MCU control module respectively, the UPS uninterruptible power supply module is used to supply power to the MCU control module, and at the same time, the UPS uninterruptible power supply module is used to monitor the power level of the power storage module. When the power level of the power storage module is less than a preset threshold, the UPS uninterruptible power supply module charges the power storage module. When the UPS uninterruptible power supply module detects that the AC power input terminal is powered off, the UPS uninterruptible power supply module immediately switches to the power storage module for power supply.

[0018] Furthermore, a temperature, humidity and smoke sensor module is installed inside the meter box body for monitoring the internal status information of the meter box and transmitting the internal status information of the meter box to the MCU control module.

[0019] Furthermore, the locking unit includes a locking mechanism installed inside the meter box body and a locking tongue mechanism installed on a side of the meter box cover close to the meter box body;

[0020] The lock tongue mechanism comprises a fixed shell and a snap lock head, the fixed shell is fixedly connected to the meter box cover, and the snap lock head is fixedly installed on a side of the fixed shell away from the meter box cover; the snap lock head comprises a fixed column, a connecting column and a terminal column which are fixedly connected in sequence, the free end of the fixed column is fixedly connected to the fixed shell, the free end of the terminal column is tapered, the diameter of the connecting column is smaller than the diameter of the fixed column, and the diameter of the connecting column is smaller than the maximum diameter of the terminal column;

[0021] The locking mechanism includes a fixed lock core box body, a locking lock core buckle is installed inside the fixed lock core box body, a lock hole adapted for a snap-on lock head is provided on the locking lock core buckle, and a power mechanism for clamping the snap-on lock head is also installed inside the fixed lock core box body, and the power mechanism is electrically connected to the MCU control module.

[0022] Furthermore, the power mechanism includes a transmission motor, a transmission gear assembly, a guide assembly and a push rod, the guide assembly includes a slide rod, a push block, a slider and two fixed plates, the two fixed plates are fixed inside the fixed lock core box body at intervals, and one of the fixed plates is arranged close to the locking lock core buckle, the slide rod is fixedly installed between the two fixed plates, the push rod is arranged parallel to the slide rod and movably arranged between the two fixed plates, and one end of the push rod slides through the fixed plate close to the locking lock core buckle and then continues to slide through the side wall of the locking lock core buckle and extends into the lock hole, the slide block is slidably sleeved on the slide rod, the push block is fixedly sleeved on the push rod, and the slide block and the push block are fixedly connected;

[0023] The output end of the transmission motor is transmission-connected to the transmission gear assembly, and the transmission gear assembly is transmission-connected to the slider to push the slider to reciprocate along the slide bar.

[0024] Furthermore, the transmission gear assembly includes a worm connected to the output shaft of the transmission motor, a worm wheel meshing with the worm, a meshing gear one coaxially fixedly installed with the worm wheel, a meshing gear two meshing with the meshing gear one, and a meshing gear three coaxially fixedly installed with the meshing gear two, and the side of the slider is provided with meshing teeth meshing with the meshing gear three.

[0025] Furthermore, return springs are fixedly connected between the two fixing plates on both sides of the push block, and the two return springs are movably sleeved outside the push rod.

[0026] Furthermore, elastic ejectors are provided on both sides of the snap-fit ​​lock head, one end of the elastic ejector is movably inserted into the interior of the fixed shell through an elastic member, and the other end extends to the exterior of the fixed shell.

[0027] Furthermore, sleeve studs are arranged at the four corners of the fixed lock core box body.

[0028] Furthermore, a control box is installed in the meter box body, and the temperature and humidity smoke sensor module, AC / DC voltage conversion module, power storage module, UPS uninterruptible power supply module, MCU control module and wireless communication module are all installed inside the control box body.

[0029] Furthermore, a QR code corresponding to the authorization key is provided on the meter box cover.

[0030] Compared with the prior art, the present invention has the following characteristics and beneficial effects:

[0031] 1. The present invention monitors the temperature, humidity and smoke conditions in the meter box in real time through the temperature, humidity and smoke sensor module installed in the control box body. When the temperature rises or smoke is generated due to abnormal conditions such as poor contact of the lines or equipment in the meter box, the temperature, humidity and smoke sensor module can send an alarm instruction to the external device through the MCU control module and the wireless communication module at the first time, and the maintenance personnel rush to the scene to check the abnormality as soon as possible, effectively avoiding the burning of meters and meter boxes due to long-term abnormalities of the lines or equipment, and also avoiding long-term power outages for users as much as possible.

[0032] 2. The present invention sends an authorization key for opening the meter box to the mobile terminal through the management platform. After arriving at the site within the specified time period, the personnel scan the QR code on the specified meter box through the mobile terminal to open the meter box, so that the box is not opened unless it is for non-operation, which can effectively reduce the risk of electricity theft. At the same time, through the design of the temperature, humidity and smoke sensor module, the status inside the meter box can be understood in advance before opening the meter box, thereby reducing safety risks.

[0033] 3. The power input UPS uninterruptible power supply module of the present invention converts the AC input 220V AC into a 5V DC power supply to realize power supply. At the same time, the UPS uninterruptible power supply module can monitor the power of the power storage module in real time. If the power is lower than 80%, it will be charged to full power immediately. After the UPS uninterruptible power supply module detects that the AC input is off, it can immediately switch to the power storage module for power supply, effectively ensuring the reliability of power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the installation structure of the present invention;

[0035] Figure 2 It is a schematic diagram of the installation of the control box body of the present invention;

[0036] Figure 3 It is a schematic diagram of the internal structure of the fixed lock core box body of the present invention;

[0037] Figure 4 It is a structural schematic diagram of the card-connected lock of the present invention;

[0038] Figure 5 It is a flow diagram of the present invention.

[0039] The reference numerals are as follows: 100, meter box body; 200, meter box cover; 1, control unit; 2, locking unit; 3, power supply cable; 4, AC / DC voltage conversion module; 5, power storage module; 6, UPS uninterruptible power supply module; 7, MCU control module; 8, wireless communication module; 9, temperature and humidity smoke sensor module; 19, control box body; 10, transmission motor; 11, transmission gear assembly; 111, worm; 112, worm wheel;

[0040] 113, meshing gear 1; 114, meshing gear 2; 12, return spring; 13, fixed lock core box body;

[0041] 131. socket stud; 14. locking cylinder buckle; 15. lock hole; 16. snap-on lock head; 161. fixing column; 162. connecting column; 163. end column; 17. elastic ejector pin; 18. fixing shell; 191. slide rod; 20. push block; 21. push rod; 22. slide block; 23. fixing plate. DETAILED DESCRIPTION

[0042] The present invention is described in more detail below with reference to the embodiments.

[0043] Embodiment 1

[0044] See also Figure 2 and Figure 5 The meter box safety protection device of this embodiment includes a meter box body 100 and a meter box cover 200 installed on the meter box body 100. The meter box cover 200 and the meter box body 100 are hinged to each other, and the meter box cover 200 is used to cover the meter box body 100.

[0045] In this embodiment, a control unit 1 and a locking unit 2 for locking the meter box cover 200 are also included, and the control unit 1 and the locking unit 2 can be installed in the meter box later, and the existing meter box can be directly modified to improve the safety of the existing meter box.

[0046] Specifically, the control unit 1 is installed inside the meter box body 100 , and the control unit 1 includes an MCU control module 7 , a wireless communication module 8 , an AC / DC voltage conversion module 4 , a power storage module 5 and a UPS uninterruptible power supply module 6 .

[0047] Among them, the MCU control module 7 is electrically connected to the locking unit 2, and is used to receive a control instruction containing an authorization key and control the locking unit 2 to open or close according to the control instruction. Only after receiving the control instruction containing the authorization key, the MCU control module 7 can control the meter box cover 200 to open.

[0048] The wireless communication module 8 is wirelessly connected to the MCU control module 7. The wireless communication module 8 is used to transmit the control instructions containing the authorization key from the external device to the MCU control module 7, and to feed back the internal status information of the meter box collected by the MCU control module 7 to the external device.

[0049] In this embodiment, the external device includes a management platform and a mobile terminal. The operator holds the mobile terminal. The management platform is used to send an authorization key that can open the corresponding meter box to the mobile terminal. The mobile terminal can send the control instruction containing the authorization key to the MCU control module 7 through the wireless communication module 8.

[0050] At the same time, the management platform can check the unlocking records at any time, authorize designated personnel to open and close the electricity meter box, and use the unlocking records to quantitatively analyze the opening and closing time and frequency of the meter box, effectively eliminating the meter box theft incidents, and can ensure that the box is not opened without an operation plan by binding with the on-site meter box operation plan.

[0051] The AC / DC voltage conversion module 4 is connected to the power input terminal of the mains power meter through the power supply cable 3, the AC / DC voltage conversion module 4 connects the mains power supply, and the AC / DC voltage conversion module 4 is used to convert the AC power input from the mains power into DC power.

[0052] The power storage module 5 is used to store or release electric energy, and the power storage module 5 serves as a backup power supply.

[0053] The UPS uninterruptible power supply module 6 is electrically connected to the AC / DC voltage conversion module 4, the power storage module 5 and the MCU control module 7 respectively.

[0054] Specifically, the UPS uninterruptible power supply module 6 is used to supply power to the MCU control module 7. At the same time, the UPS uninterruptible power supply module 6 is used to monitor the power level of the power storage module 5. When the power level of the power storage module 5 is lower than 80%, the UPS uninterruptible power supply module 6 charges the power storage module 5 until the power storage module 5 is fully charged. After the UPS uninterruptible power supply module 6 detects that the AC power input terminal is powered off, the UPS uninterruptible power supply module 6 immediately switches to the power storage module 5 for power supply.

[0055] In this embodiment, a temperature, humidity and smoke sensor module 9 is also installed inside the meter box body 100 for monitoring the internal status information of the meter box and transmitting the internal status information of the meter box to the MCU control module 7. The internal status information of the meter box includes the temperature, humidity and whether there is smoke inside the meter box body 100.

[0056] Furthermore, a control box body 19 is installed in the meter box body 100, and the temperature and humidity smoke sensor module 9, the AC / DC voltage conversion module 4, the power storage module 5, the UPS uninterruptible power supply module 6, the MCU control module 7 and the wireless communication module 8 are all installed inside the control box body 19.

[0057] Furthermore, a two-dimensional code corresponding to the authorization key is provided on the meter box cover 200 .

[0058] From the above description, we can see that Figure 5When the device is working, the management platform first sends the authorization key for opening the meter box to the mobile terminal. The authorization key contains the time and quantity of opening the box. After the operator arrives at the site within the specified time period, he scans the specified QR code through the mobile terminal. After the MCU control module 7 receives and identifies the authorization key sent by the mobile terminal, the temperature and humidity smoke sensor module 9 sends the internal status information of the meter box through the MCU control module 7 and the wireless communication module 8 to the mobile terminal of the on-site opening operator, so that the operator can give early warning of abnormal conditions in the meter box, greatly reducing the safety risks in the process of opening the meter box.

[0059] At the same time, after the MCU control module 7 receives and identifies the authorization key sent by the mobile terminal, the MCU control module 7 issues an unlocking command, and the locking unit 2 receives the unlocking command and opens the meter box, thus completing the unboxing operation.

[0060] Embodiment 2

[0061] See also Figure 1 , Figure 3 and Figure 4 As shown, the meter box safety protection device of this embodiment is based on the above-mentioned embodiment 1, and the locking unit 2 includes a locking mechanism installed inside the meter box body 100 and a locking tongue mechanism installed on the meter box cover 200 close to the side of the meter box body 100, and the locking tongue mechanism and the locking mechanism cooperate with each other to lock the meter box cover 200.

[0062] Specifically, the locking tongue mechanism includes a fixed shell 18 and a snap-on lock head 16 . The fixed shell 18 is fixedly connected to the meter box cover 200 , and the snap-on lock head 16 is fixedly installed on a side of the fixed shell 18 away from the meter box cover 200 .

[0063] The snap-on lock 16 includes a fixing column 161, a connecting column 162 and an end column 163 which are fixedly connected in sequence. The free end of the fixing column 161 is fixedly connected to the fixing shell 18. The free end of the end column 163 is conical. The diameter of the connecting column 162 is smaller than the diameter of the fixing column 161, and the diameter of the connecting column 162 is smaller than the maximum diameter of the end column 163. The fixing column 161 and the end column 163 are used for snap connection to complete the locking.

[0064] The locking mechanism includes a fixed lock core box body 13, a locking lock core buckle 14 is installed inside the fixed lock core box body 13, and a lock hole 15 adapted for the snap-on lock head 16 is provided on the locking lock core buckle 14. A power mechanism for clamping the snap-on lock head 16 is also installed inside the fixed lock core box body 13. The power mechanism is electrically connected to the MCU control module 7. After the snap-on lock head 16 is inserted into the lock hole 15, the power mechanism can complete the locking of the snap-on lock head 16 by supporting the connecting column 162 between the fixed column 161 and the end column 163.

[0065] Furthermore, the power mechanism includes a transmission motor 10 , a transmission gear assembly 11 , a guide assembly and a push rod 21 , and the guide assembly includes a slide bar 191 , a push block 20 , a slide block 22 and two fixed plates 23 .

[0066] Specifically, the two fixed plates 23 are fixed at intervals inside the fixed lock core box body 13, and one of the fixed plates 23 is arranged close to the locking lock core buckle 14, the slide bar 191 is fixedly installed between the two fixed plates 23, the push rod 21 is arranged parallel to the slide bar 191 and movably arranged between the two fixed plates 23, and one end of the push rod 21 slides through the fixed plate 23 close to the locking lock core buckle 14 and then continues to slide through the side wall of the locking lock core buckle 14 and extends into the lock hole 15, the reciprocating motion of the push rod 21 is used to clamp or release the clamped lock head 16, the slider 22 is slidably sleeved on the slide bar 191, the push block 20 is fixedly sleeved on the push rod 21, and the slider 22 and the push block 20 are fixedly connected.

[0067] The output end of the transmission motor 10 is transmission-connected to the transmission gear assembly 11 , and the transmission gear assembly 11 is transmission-connected to the slider 22 to push the slider 22 to reciprocate along the slide bar 191 .

[0068] Specifically, the transmission gear assembly 11 includes a worm 111 that is transmission-connected to the output shaft of the transmission motor 10, a worm wheel 112 that meshes with the worm 111, a meshing gear 1 113 that is coaxially fixedly mounted with the worm wheel 112, a meshing gear 2 114 that meshes with the meshing gear 1 113, and a meshing gear 3 that is coaxially fixedly mounted with the meshing gear 2 114, and meshing teeth that mesh with the meshing gear 3 are provided on the side of the slider 22.

[0069] Furthermore, return springs 12 are fixedly connected between the two fixing plates 23 on both sides of the push block 20 , and the two return springs 12 are movably sleeved outside the push rod 21 .

[0070] From the above description, it can be seen that after the transmission motor 10 is powered on and started, the worm 111 is driven to rotate through the output shaft, and the rotation of the worm 111 drives the worm wheel 112 to rotate, and the worm wheel 112 drives the coaxially fixed meshing gear 1 13 to rotate, and the rotation of the meshing gear 1 113 drives the meshing gear 2 114 to rotate, and the rotation of the meshing gear 2 114 can drive the coaxially fixed meshing gear 3 to rotate, and the rotation of the meshing gear 3 will push the slider 22 to move along the slide bar 191 through the meshing teeth, and then the slider 22 can drive the push block 20 to move synchronously, and the movement of the push block 20 will drive the push rod 21 to move in the same direction as the slider 22, so that the push rod 21 withdraws from the engagement with the engaging lock head 16 to achieve unlocking.

[0071] In this embodiment, five seconds after the MCU control module 7 issues the unlocking command, the MCU control module 7 will control the transmission motor 10 to rotate in the opposite direction, so that the push rod 21 continues to be engaged with the lock hole 15, so that the subsequent operators can directly use the tapered end column 163 to push open the push rod 21 when closing the meter box cover 200, and after the engaging lock 16 is fully inserted into the lock hole 15, the push rod 21 can return to its position under the action of the reset spring 12, so that the meter box cover 200 is directly in a locked state. The setting of the reset spring 12 can also make the push rod 21 always in a locked and engaged state, further protecting the safety of the meter box.

[0072] Furthermore, elastic ejector pins 17 are provided on both sides of the locking head 16. One end of the elastic ejector pin 17 is movably inserted into the fixed shell 18 through an elastic member, and the other end extends to the outside of the fixed shell 18. When the push rod 21 exits the locked and clamped state, the elastic ejector pin 17 can directly push open the meter box cover 200 for easy opening.

[0073] Furthermore, sleeve studs 131 are provided at the four corners inside the fixed lock core box body 13 , and the end cover of the fixed lock core box body 13 is conveniently connected to the fixed lock core box body 13 through the sleeve studs 131 .

[0074] The working principle of the present invention is as follows: when the device is working, the management platform first sends an authorization key for opening the meter box to the mobile terminal. The authorization key includes the time and quantity of unpacking. After the operator arrives at the site within the specified time period, he scans the specified QR code through the mobile terminal. After the MCU control module 7 receives and identifies the authorization key sent by the mobile terminal, the temperature, humidity and smoke sensor module 9 sends the internal status information of the meter box to the mobile terminal of the on-site unpacking operator through the MCU control module 7 and the wireless communication module 8, so that the operator can give early warning of abnormal conditions in the meter box, greatly reducing the safety risks in the process of opening the meter box.

[0075] At the same time, after the MCU control module 7 receives and identifies the authorization key sent by the mobile terminal, the MCU control module 7 issues an unlocking command, and the locking unit 2 receives the unlocking command and opens the meter box, thus completing the unboxing operation.

[0076] Five seconds after the MCU control module 7 issues the unlocking command, the MCU control module 7 will control the transmission motor 10 to rotate in the opposite direction, so that the push rod 21 continues to be engaged with the lock hole 15, so that the subsequent operator can directly use the tapered end column 163 to push open the push rod 21 when closing the meter box cover 200, and after the engaging lock 16 is fully inserted into the lock hole 15, the push rod 21 can return to its original position under the action of the reset spring 12, so that the meter box cover 200 is directly in a locked state. The setting of the reset spring 12 can also make the push rod 21 always in a locked and engaged state, further protecting the safety of the meter box.

[0077] In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0078] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0079] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A meter box safety protection device, comprising a meter box body (100) and a meter box cover (200) installed on the meter box body (100), characterized in that: It also includes a control unit (1) and a locking unit (2) for locking the meter box cover (200); The control unit (1) is installed inside the meter box body (100), and the control unit (1) comprises: MCU control module (7): electrically connected to the locking unit (2), used for receiving a control instruction containing an authorization key and controlling the locking unit (2) to open or close according to the control instruction; A wireless communication module (8) is wirelessly connected to the MCU control module (7), and is used to transmit a control instruction containing an authorization key from an external device to the MCU control module (7), and to feed back the internal state information of the meter box collected by the MCU control module (7) to the external device; AC / DC voltage conversion module (4): connected to the power input terminal of the mains electric energy meter, used for converting the AC power input from the mains into DC power; Power storage module (5): used to store or release electric energy; UPS uninterruptible power supply module (6): electrically connected to the AC / DC voltage conversion module (4), the power storage module (5) and the MCU control module (7) respectively; the UPS uninterruptible power supply module (6) is used to supply power to the MCU control module (7); at the same time, the UPS uninterruptible power supply module (6) is used to monitor the power level of the power storage module (5); when the power level of the power storage module (5) is less than a preset threshold, the UPS uninterruptible power supply module (6) charges the power storage module (5); when the UPS uninterruptible power supply module (6) detects that the mains input terminal is powered off, the UPS uninterruptible power supply module (6) immediately switches to the power storage module (5) for power supply.

2. A meter box safety protection device according to claim 1, characterized in that: A temperature, humidity and smoke sensor module (9) is also installed inside the meter box body (100) and is used to monitor internal state information of the meter box and transmit the internal state information of the meter box to the MCU control module (7).

3. A meter box safety protection device according to claim 1, characterized in that: The locking unit (2) comprises a locking mechanism installed inside the meter box body (100) and a locking tongue mechanism installed on a side of the meter box cover (200) close to the meter box body (100); The locking tongue mechanism comprises a fixed shell (18) and a snap-on lock head (16); the fixed shell (18) is fixedly connected to the meter box cover (200); the snap-on lock head (16) is fixedly installed on a side of the fixed shell (18) away from the meter box cover (200); the snap-on lock head (16) comprises a fixed column (161), a connecting column (162) and an end column (163) which are fixedly connected in sequence; the free end of the fixed column (161) is fixedly connected to the fixed shell (18); the free end of the end column (163) is tapered; the diameter of the connecting column (162) is smaller than the diameter of the fixed column (161), and the diameter of the connecting column (162) is smaller than the maximum diameter of the end column (163); The locking mechanism comprises a fixed lock core box body (13), a locking lock core buckle (14) is installed inside the fixed lock core box body (13), a lock hole (15) adapted to a snap-on lock head (16) is provided on the locking lock core buckle (14), and a power mechanism for snapping the snap-on lock head (16) is also installed inside the fixed lock core box body (13), and the power mechanism is electrically connected to the MCU control module (7).

4. A meter box safety protection device according to claim 3, characterized in that: The power mechanism comprises a transmission motor (10), a transmission gear assembly (11), a guide assembly and a push rod (21); the guide assembly comprises a slide bar (191), a push block (20), a slide block (22) and two fixed plates (23); the two fixed plates (23) are fixed inside the fixed lock core box body (13) at intervals, and one of the fixed plates (23) is arranged close to the locking lock core buckle (14); the slide bar (191) is fixedly installed between the two fixed plates (23); The rod (21) and the slide bar (191) are arranged in parallel and movably arranged between two fixed plates (23), and one end of the push rod (21) slides through the fixed plate (23) close to the locking cylinder buckle (14) and then continues to slide through the side wall of the locking cylinder buckle (14) and extends into the lock hole (15), the slider (22) is slidably sleeved on the slide bar (191), the push block (20) is fixedly sleeved on the push rod (21), and the slider (22) and the push block (20) are fixedly connected; The output end of the transmission motor (10) is transmission-connected to the transmission gear assembly (11), and the transmission gear assembly (11) is transmission-connected to the slider (22) for driving the slider (22) to reciprocate along the slide bar (191).

5. A meter box safety protection device according to claim 4, characterized in that: The transmission gear assembly (11) comprises a worm (111) drivingly connected to the output shaft of the transmission motor (10), a worm wheel (112) meshing with the worm (111), a meshing gear 1 (113) coaxially fixedly mounted with the worm wheel (112), a meshing gear 2 (114) meshing with the meshing gear 1 (113), and a meshing gear 3 coaxially fixedly mounted with the meshing gear 2 (114), and a side surface of the slider (22) is provided with meshing teeth meshing with the meshing gear 3.

6. A meter box safety protection device according to claim 4, characterized in that: Reset springs (12) are fixedly connected between the two sides of the push block (20) and the two fixed plates (23), and the two reset springs (12) are movably sleeved outside the push rod (21).

7. A meter box safety protection device according to claim 4, characterized in that: Elastic ejector pins (17) are arranged on both sides of the snap-fit ​​lock head (16); one end of the elastic ejector pin (17) is movably inserted into the interior of the fixed shell (18) through an elastic member, and the other end extends to the exterior of the fixed shell (18).

8. A meter box safety protection device according to claim 4, characterized in that: The four corners of the interior of the fixed lock core box body (13) are all provided with sleeve studs (131).

9. A meter box safety protection device according to claim 2, characterized in that: A control box body (19) is installed in the meter box body (100), and the temperature and humidity smoke sensor module (9), the AC / DC voltage conversion module (4), the power storage module (5), the UPS uninterruptible power supply module (6), the MCU control module (7) and the wireless communication module (8) are all installed inside the control box body (19).

10. A meter box safety protection device according to claim 1, characterized in that: The meter box cover (200) is provided with a two-dimensional code corresponding to the authorization key.

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