Intelligent electric meter capable of preventing electricity larceny

Abstract

The invention relates to the technical field of electricity larceny prevention devices for electricity meters, in particular to an electricity larceny prevention intelligent electricity meter which comprises a meter box, an anti-theft shell is fixedly welded to the inner end of the meter box, an anti-theft cover is rotatably installed at the left end of the anti-theft shell, an alarm sensing device is fixedly installed at the inner end of the meter box, and a lock cylinder sleeve is fixedly installed at the front end of the inner side of the meter box. A key is arranged on the left side of the lock cylinder sleeve, an anti-theft unlocking device capable of being opened only through the key is arranged in the lock cylinder sleeve, the anti-theft lock can be opened only through the correct key, the key serves as a physical protection layer, the alarm sensing device serves as an electronic protection layer and can serve as a second defense line, and if violent unlocking behaviors such as prying of the lock through a tool exist, the anti-theft lock can be unlocked through the key. In addition, the alarm sensing device can quickly detect an abnormal vibration mode and recognize an abnormal unlocking behavior, so that the defect of a single protection means is overcome.

Description

Technical Field

[0001] The invention relates to the technical field of anti-electricity-theft devices for electric meters, and in particular to an anti-electricity-theft smart electric meter. Background Art

[0002] With the continuous growth of electricity consumption, the management and monitoring of power systems have become increasingly complex, especially in the field of power metering. Traditional mechanical meters can no longer meet the requirements of modern power metering systems for accuracy, safety and intelligence. In recent years, with the opening of the power market and the construction of smart grids, traditional power metering methods are facing huge challenges. Illegal electricity use and electricity theft not only damage the interests of power companies, but also affect the management of social power resources.

[0003] After searching, it was found that the prior art publication number is CN116539938A, which discloses an anti-electricity theft smart meter, which includes: an electric meter component, a protective component, a processor, a detection unit, a communication unit and an alarm unit. The electric meter component includes a support plate, an electric meter, a slide slot and a baffle, the electric meter is arranged on the front side of the support plate, slide slots are arranged on both sides of the support plate, and a baffle is arranged on the bottom of the support plate; the protective component is arranged on the slide slot, and the protective component includes a sliding cover, an electric control box and a pressure touch unit, the sliding cover is connected to the slide slot, the electric control box is arranged on the top of the inner side of the sliding cover, and the pressure touch unit is arranged on the top of the inner cavity of the electric control box; this scheme realizes the detection of electricity theft of the electric meter by connecting the circuit of the detection unit through the contact between the pressure touch unit and the electric meter in a triggering state. When in use, the sliding cover protects the outside of the electric meter to avoid wiring theft. At the same time, after the sliding cover slides down, the pressure touch unit connects the detection unit to detect the circuit, and an alarm is issued according to the detection result.

[0004] Therefore, based on the above search and in combination with the existing technology, in the application process of the above scheme, the meter can only sound an alarm after electricity has been stolen, which means that the meter has been pried open by improper means. If the meter does not sound an alarm when it is pried open, the electricity thief has succeeded and escaped, and it will be difficult to trace the theft of electricity. For this reason, we propose a smart meter that prevents electricity theft. Summary of the invention

[0005] The object of the present invention is to provide a smart electric meter that prevents electricity theft, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an intelligent electric meter for preventing electricity theft, comprising a meter box, a digital display for displaying current power consumption is fixedly installed on the inner end of the meter box, a dust cover for shielding wind, rain and dust is arranged on the left side of the meter box, an anti-theft shell is fixedly welded on the inner end of the meter box, an anti-theft cover is rotatably installed on the left end of the anti-theft shell, a clamping plate is fixedly installed on the right end of the anti-theft cover, a hook is rotatably installed on the right end of the anti-theft shell, and the hook is clamped in the clamping plate, a winding rod is rotatably installed on the right end of the anti-theft shell, a towing belt is wound on the outer surface of the winding rod, and the free end of the towing belt is fixedly connected to one end of the hook away from the anti-theft cover, an alarm sensing device is fixedly installed on the inner end of the meter box, a lock core sleeve is fixedly installed on the inner front end of the meter box, a key is arranged on the left side of the lock core sleeve, and an anti-theft unlocking device which can only be opened by the key is arranged inside the lock core sleeve.

[0007] As a further solution of the present invention, a reset rod is slidably installed on the inner end of the meter box, and the reset rod corresponds to the alarm sensing device. A passive tube is rotatably installed on the right end of the anti-theft shell, and the passive tube is fixedly connected to the rolling rod. The passive tube is fixedly connected to the rolling rod, and the anti-theft shell can be effectively locked or unlocked by rotating and pulling the rolling rod to prevent illegal operation from opening the anti-theft shell. The function of the passive tube is to prevent the anti-theft shell from being destroyed by illegal external force, thereby enhancing the physical security of the equipment.

[0008] As a further solution of the present invention, an unlocking sleeve is provided on the outer surface of the reset rod, an extension rod is fixedly installed on one end of the unlocking sleeve close to the reset rod, and a pull rod is rotatably installed on the end of the extension rod away from the passive tube, the free end of the pull rod is rotatably connected to the unlocking sleeve, and a movable sleeve is slidably installed on the outer surface of the reset rod, and the movable sleeve is located on the right side of the unlocking sleeve. When the unlocking sleeve moves in a direction close to the alarm sensing device, it can drive the passive tube to rotate through the extension rod.

[0009] As a further solution of the present invention, the anti-theft unlocking device includes a trigger sleeve, which is rotatably mounted on the inner end of the lock core sleeve, and a lock ring is fixedly mounted on the outer surface of the trigger sleeve. A plurality of rectangular holes are opened on the outer surface of the trigger sleeve, and a stabilizing shell is passed through the rectangular holes, and the stabilizing shell is fixedly connected to the lock ring.

[0010] As a further solution of the present invention, a synchronization tube is fixedly installed on the inner end of the stabilizing shell, a locking block is slidably installed on the upper inner end of the synchronization tube, and a plurality of clamping blocks are fixedly installed on the inner end of the lock core sleeve, and the plurality of clamping blocks are all in contact with the outer surface of the locking block. The contact between the clamping blocks and the locking blocks can effectively prevent the illegal rotation and disassembly of the lock core. The plurality of clamping blocks are distributed on the inner end of the lock core sleeve to ensure that the lock core can rotate smoothly during normal operation. However, when attempts are made to illegally open or pry, the combination of the clamping blocks and the locking blocks will provide additional protection to prevent the lock core from being damaged or rotated.

[0011] As a further solution of the present invention, a plurality of contact rods are slidably installed at the inner end of the stabilizing shell, and the right end of the contact rod is inserted into the interior of the synchronous tube. Passive grooves are provided on the outer surfaces of the contact rods, and triangular blocks are provided inside the passive grooves. The triangular blocks are fixedly connected to each other, and the contact rods can slide inside the stabilizing shell, so that their position can be effectively adjusted during the operation of the lock, ensuring a close fit with the synchronous tube and other components, thereby reducing the impact of friction and vibration on components and improving the service life of the lock.

[0012] As a further solution of the present invention, a toggle plate is rotatably installed at the inner front end of the stabilizing shell, and a push rod is rotatably installed at one end of the triangular block close to the toggle plate. The free end of the push rod is rotatably connected to the toggle plate. The toggle plate serves as a rotating element. The state of the internal mechanism can be precisely controlled by rotating or toggling, and the position or movement of other components can be adjusted as needed.

[0013] As a further solution of the present invention, a locking shell is fixedly installed on the inner end of the trigger sleeve, a comparison rod is passed through the inner end of the locking shell, and a plurality of comparison cylinders are fixedly installed on the inner bottom end of the locking shell, and the comparison cylinders are fixedly connected to each other. The design of the comparison rod passing through the inner end of the locking shell can ensure that the locking shell can be accurately aligned with other components during the operation of the lock.

[0014] As a further solution of the present invention, the inner end of the comparison cylinder is provided with a comparison touch rod, the outer surface of the comparison rod is provided with a plurality of grooves of different depths, and the grooves correspond to the comparison touch rod, the inner end of the locking shell is slidably installed with an actuating plate, the right end of the actuating plate is fixedly installed with a synchronization block, and the synchronization block corresponds to the comparison touch rod.

[0015] As a further solution of the present invention, a spiral groove is provided on the outer surface of the trigger sleeve, a movable rod is fixedly installed on the upper end of the unlocking sleeve, and the end of the movable rod away from the unlocking sleeve is inserted into the spiral groove. When the trigger sleeve rotates, the spiral groove drives the movable rod to move.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention can only be opened with the correct key, where the key serves as a physical protection layer and the alarm sensor serves as an electronic protection layer, which can serve as a second line of defense. If there is a violent unlocking behavior (such as using a tool to pry the lock), the alarm sensor can also quickly detect the abnormal vibration pattern and identify the abnormal unlocking behavior, thus making up for the deficiency of a single protection means;

[0018] 2. When the present invention is used, when the key is not inserted into the trigger sleeve to unlock the door, and the dust cover is opened first, the reset rod pops out, and the alarm sensor device immediately triggers the alarm. Even without special unlocking tools, the device cannot be opened simply by prying, shaking, disassembling, etc., providing more comprehensive safety protection;

[0019] 3. When the present invention is used, the moment the dust cover is opened, the reset rod moves under the elastic force of the trigger spring and locks the locking plate in the locking groove, so that the passive tube cannot rotate and the anti-theft cover cannot be opened. The thief cannot continue to damage the device or obtain the internal items. The effective anti-theft design reduces the probability of the device being stolen, thereby reducing the cost of subsequent maintenance, replacement and compensation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a smart electric meter that prevents electricity theft;

[0021] Figure 2 This is a schematic diagram of the state when the dust cover is opened;

[0022] Figure 3 It is a schematic diagram of the structure inside the anti-theft shell;

[0023] Figure 4 It is a schematic diagram of the enlarged structure inside the anti-theft shell;

[0024] Figure 5 It is a schematic diagram of the structure of the enlarged passive tube;

[0025] Figure 6 It is a schematic diagram of the structure at the reset rod;

[0026] Figure 7 It is a schematic diagram of the structure inside the lock cylinder sleeve;

[0027] Figure 8 It is a schematic diagram of the structure inside the trigger sleeve;

[0028] Fig. 9 This is a schematic diagram of the enlarged structure inside the stable shell;

[0029] Fig.10 It is a schematic diagram of the structure inside the locking shell;

[0030] Fig.11 It is a schematic diagram of the structural relationship between the comparison tube and the comparison rod;

[0031] Fig.12 It is a schematic diagram of the position relationship between the synchronization block and the comparison touch rod;

[0032] Fig.13 The key structure diagram is shown below;

[0033] Fig.14This is a diagram showing the relationship between the spiral groove and the position of the movable rod.

[0034] In the figure: 1, meter box; 2, digital display; 3, dust cover; 4, key; 5, anti-theft cover; 6, anti-theft shell; 11, slide rail; 12, connecting plate; 21, reset rod; 41, positioning hole; 42, unlocking slot;

[0035] 101, lock cylinder sleeve; 102, alarm sensor; 103, card plate; 104, card hook; 105, towing belt; 106, rolling rod; 107, passive tube; 108, locking groove; 109, extension rod; 110, card block;

[0036] 201, movable sleeve; 202, trigger spring; 203, locking plate; 204, pulling rod; 205, movable rod; 206, unlocking sleeve;

[0037] 301, lock ring; 302, trigger sleeve; 303, stabilizing shell; 304, locking block; 305, reset spring; 306, contact rod; 307, triangular block; 308, push rod; 309, toggle plate; 310, passive groove; 311, synchronous tube; 312, spiral groove;

[0038] 401, locking shell; 402, comparison rod; 403, contact block; 404, comparison cylinder; 405, stirring plate; 406, extrusion spring; 407, comparison spring; 408, comparison contact rod; 409, synchronization block; 410, resistance spring. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the 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.

[0040] Example 1: Please refer to Figure 1 , an anti-electricity theft smart meter, comprising a meter box 1, a digital display 2 for displaying current power consumption is fixedly installed at the inner end of the meter box 1 by bolts, a dust cover 3 for shielding wind, rain and dust is arranged on the left side of the meter box 1, and a sealing rubber ring is sleeved on the right side of the dust cover 3, which can isolate the inside and outside to the greatest extent when the meter box 1 is closed;

[0041] like Figure 2As shown, the upper and lower sides of the front end of the meter box 1 are fixedly installed with slide rails 11, and the upper and lower sides of the rear end of the dust cover 3 are fixedly welded with connecting plates 12, and the upper and lower connecting plates 12 are slidably installed on the inner ends of the slide rails 11. When the dust cover 3 needs to be opened, the dust cover 3 must be pulled outward for a distance first, and then it can be opened. More specifically, the outer surfaces of the dust cover 3 and the meter box 1 are fixedly installed with lock holes, so that the dust cover 3 can be firmly locked outside the meter box 1 through an external lock to prevent the dust cover 3 from being accidentally opened;

[0042] See also Figure 1 , Figure 3 , Figure 4 , the inner end of the meter box 1 is fixedly welded with an anti-theft shell 6, and a plurality of air switches are arranged inside the anti-theft shell 6. The anti-theft shell 6 protects the air switches in all directions to prevent the possibility of electricity thieves from stealing electricity privately. The anti-theft shell 6 is located below the digital display 2, and an anti-theft tempered glass is fixedly installed on the upper end of the anti-theft shell 6 to further protect the digital display 2. An anti-theft cover 5 is rotatably installed on the left end of the anti-theft shell 6, and a sealing rubber ring is fixedly installed on one end of the anti-theft cover 5 close to the anti-theft shell 6 to increase the airtightness between the anti-theft cover 5 and the anti-theft cover 5. A card board 103 is fixedly installed on the right end of the anti-theft cover 5, and a hook 104 is rotatably installed on the right end of the anti-theft shell 6, and the hook 104 is clamped in the card board 103. Then, if the hook 104 does not clamp the card board 103, the anti-theft cover 5 cannot be opened from the outside;

[0043] A reel 106 is rotatably mounted on the right end of the anti-theft shell 6, and a towing strap 105 is wound around the outer surface of the reel 106. The towing strap 105 is made of metal (painted iron sheet), and the free end of the towing strap 105 is fixedly connected to the end of the hook 104 away from the anti-theft cover 5. An alarm sensor 102 is fixedly mounted on the inner end of the meter box 1. Specifically, the alarm sensor 102 has a built-in processor, a vibration sensor, an infrared sensor, a whistle, a signal transmitter, and a built-in rechargeable battery. The above parts are all existing mature technologies and are not described in detail here. Then, when the device is pried, the alarm sensor 102 will sound an alarm. When the alarm sounds, the whistle will start to sound. A lock core sleeve 101 is fixedly mounted on the inner front end of the meter box 1. A key 4 is arranged on the left side of the lock core sleeve 101, and an anti-theft unlocking device that can only be opened by the key 4 is arranged inside the lock core sleeve 101.

[0044] See also Figure 1 , Figure 3 - Figure 6A reset rod 21 is slidably installed at the inner end of the meter box 1, and a rectangular groove is provided on the outer surface of the reset rod 21. A limit slider is fixedly installed at the inner end of the meter box 1, and the limit slider is located in the rectangular groove to prevent the reset rod 21 from rotating. The reset rod 21 corresponds to the alarm sensing device 102, and the reset rod 21 and the alarm sensing device 102 are connected through a trigger spring 202, and the infrared sensor of the alarm sensing device 102 corresponds to the reset rod 21. When the dust cover 3 is tightly closed with the meter box 1, the dust cover 3 squeezes the reset rod 21, and the trigger spring 202 is locked. If the dust cover 3 is opened abnormally, the trigger spring 202 releases the elastic force, so that the reset rod 21 is ejected, and the alarm sensing device 102 is 2 The infrared sensor inside senses the movement of the reset rod 21, so that the alarm sensing device 102 sounds an alarm. The right end of the anti-theft shell 6 is rotatably mounted with a passive tube 107, and the passive tube 107 is fixedly connected to the rolling rod 106. The outer surface of the reset rod 21 is sleeved with an unlocking sleeve 206, and the end of the unlocking sleeve 206 close to the reset rod 21 is fixedly mounted with an extension rod 109, the extension rod 109 is "Z" shaped, and the end of the extension rod 109 away from the passive tube 107 is rotatably mounted with a pull rod 204, and the free end of the pull rod 204 is rotatably connected to the unlocking sleeve 206. When the unlocking sleeve 206 moves in the direction close to the alarm sensing device 102, it can drive the passive tube 107 to rotate through the extension rod 109;

[0045] See also Figure 4 , Figure 5 , Figure 6 A movable sleeve 201 is slidably installed on the outer surface of the reset rod 21, and the movable sleeve 201 is located on the right side of the unlocking sleeve 206. A rectangular block is fixedly installed on the inner end of the movable sleeve 201, and the rectangular block also slides in the rectangular groove on the outer surface of the reset rod 21, so that when the movable sleeve 201 slides, it can avoid self-rotation. A locking plate 203 is fixedly welded on the outer surface of the movable sleeve 201, and the locking plate 203 is parallel to the passive tube 107, and a locking groove 108 is provided on the outer surface of the passive tube 107. A limiting ring is fixedly installed on the outer surface of the reset rod 21. Then, when the reset rod 21 is pushed by the trigger spring 202, the movable sleeve 201 is pushed by the limiting ring so that the locking plate 203 is passed through the locking groove 108, so that the passive tube 107 cannot continue to rotate, and the anti-theft cover 5 is completely locked.

[0046] Example 2: Please refer to Figure 3 , Figure 7 , Figure 8, an anti-electricity theft smart meter, based on embodiment 1, the anti-theft unlocking device includes a trigger sleeve 302, the trigger sleeve 302 is rotatably mounted on the inner end of the lock core sleeve 101, a lock ring 301 is fixedly mounted on the outer surface of the trigger sleeve 302, a plurality of rectangular holes are opened on the outer surface of the trigger sleeve 302, a stabilizing shell 303 is penetrated in each of the rectangular holes, and the stabilizing shell 303 is fixedly connected to the lock ring 301, a synchronous tube 311 is fixedly mounted on the inner end of the stabilizing shell 303, a locking block 304 is slidably mounted on the upper inner end of the synchronous tube 311, a sealing rubber ring is sleeved on the outer surface of the locking block 304 close to the synchronous tube 311, and the sealing rubber ring is tightly fitted with the inner wall of the synchronous tube 311 to increase air tightness, a plurality of card blocks 110 are fixedly mounted on the inner end of the lock core sleeve 101, and the plurality of card blocks 110 are in contact with the outer surface of the locking block 304;

[0047] A plurality of contact rods 306 are slidably mounted on the inner end of the stabilizing shell 303. The right end of the contact rod 306 is inserted into the interior of the synchronous tube 311. A sealing rubber ring is fixedly sleeved on the outer surface of the contact rod 306 close to the synchronous tube 311 and is tightly fitted with the inner end of the synchronous tube 311 to increase air tightness. When the contact rod 306 moves, the air inside the synchronous tube 311 is squeezed, so that the air inside the synchronous tube 311 pushes the locking block 304 to move, so that the locking block 304 is no longer in contact with the clamping block 110.

[0048] See also Figure 8 , Fig.10 - Fig.12 , the outer surface of the contact rod 306 is provided with a passive groove 310, and the interior of the passive groove 310 is provided with a triangular block 307, the volume of the triangular blocks 307 of the large and small passive grooves 310 is the same, and the contact rod 306 is connected to the stable shell 303 by a spring, and the triangular blocks 307 are fixedly connected to each other, and the triangular blocks 307 are connected to the stable shell 303 by a reset spring 305, and a toggle plate 309 is rotatably installed at the front end of the inner side of the stable shell 303, and a push rod 308 is rotatably installed at one end of the triangular block 307 close to the toggle plate 309, and the free end of the push rod 308 is rotatably connected to the toggle plate 309. When the toggle plate 309 is rotated by force, and the triangular block 307 is pushed to move by the push rod 308, so that the triangular block 307 gradually moves away from the passive groove 310, so that the contact rod 306 has a certain activity space;

[0049] The inner end of the trigger sleeve 302 is fixedly welded with a locking shell 401, and the inner end of the locking shell 401 is penetrated with a comparison rod 402, and the comparison rod 402 and the locking shell 401 are connected by a comparison spring 407. The outer surface of the comparison rod 402 is provided with a limit groove, and the inner end of the locking shell 401 is fixedly installed with a limit block, and the limit block is located in the limit groove, so that the comparison rod 402 will not rotate during the sliding process, and the end of the comparison rod 402 away from the locking shell 401 is fixedly installed with a contact block 403, and the locking shell 40 1 is fixedly installed with a plurality of comparison cylinders 404 at the inner bottom end, and the comparison cylinders 404 are fixedly connected to each other. The inner ends of the comparison cylinders 404 are all penetrated with comparison touch rods 408. The outer surface of the comparison rod 402 is provided with a plurality of grooves of different depths, and the grooves correspond to the comparison touch rods 408. The comparison touch rods 408 are connected to the comparison cylinders 404 through a resistance spring 410. A provoking plate 405 is slidably installed at the inner end of the locking shell 401, and the provoking plate 405 is connected to the locking shell 401 through a compression spring 406.

[0050] like Fig.12 As shown, a synchronization block 409 is fixedly installed at the right end of the trigger plate 405, and the synchronization block 409 corresponds to the comparison touch rod 408. The outer surface of the comparison touch rod 408 is provided with a plurality of mutually staggered positioning grooves. When the comparison rod 402 is forced to move, when the grooves on the outer surface of the comparison touch rod 408 are parallel, the comparison touch rod 408 presents a jagged state under the elastic force of the resisting spring 410, and the positioning grooves are horizontally aligned. Then the synchronization block 409 is embedded in the positioning groove, and a limiting groove is provided at the inner end of the lock core sleeve 101. The trigger plate 405 is located in the limiting groove. Then, when the trigger plate 405 is moved by the extrusion spring 406, it is separated from the limiting groove in the lock core sleeve 101.

[0051] like Fig. 9 , Fig.10 , Fig.13 As shown, the outer surface of the key 4 is provided with a plurality of positioning holes 41, and the depth of the positioning holes 41 is not uniform. The outer surface of the key 4 is provided with an unlocking groove 42. When the key 4 is inserted into the trigger sleeve 302, the unlocking groove 42 corresponds to the contact block 403, and the positioning hole 41 corresponds to the contact rod 306. At the same time, the combination of the positioning holes 41 of different depths increases the difficulty of cracking.

[0052] like Fig.14 As shown, a spiral groove 312 is formed on the outer surface of the trigger sleeve 302, and a movable rod 205 is fixedly mounted on the upper end of the unlocking sleeve 206, and one end of the movable rod 205 away from the unlocking sleeve 206 is inserted into the spiral groove 312. When the trigger sleeve 302 rotates, the spiral groove 312 drives the movable rod 205 to move;

[0053] like Figure 3 , Fig. 9 , Fig.10 As shown, more specifically, there are five vibration sensors in the alarm sensing device 102, which are respectively located in the four stable shells 303 and the locking shell 401. When the key 4 is used to open the lock normally, the vibration emitted from the inside is often continuous and direct. When the lock is pried, the vibration emitted from the inside is irregular. Therefore, the alarm sensing device 102 determines whether there is a possibility of being pried according to the vibration pattern.

[0054] Based on the above principle, each sensor device will output a vibration value sequence (which can be time series data). We can record the vibration values ​​V1, V2, V3, V4, V5 of each sensor device, and calculate the mean, standard deviation, and vibration fluctuation amplitude (peak-to-peak, PP) of each sensor device's vibration sequence:

[0055]

[0056] PP(V i )=max(V i )-min(V i );

[0057] Standard deviation threshold: If the standard deviation of the vibration of a certain sensing device is greater than the set threshold std threshold , then the vibration is considered irregular, peak-to-valley difference threshold: If the peak-to-valley difference of the vibration of a certain sensing device 102 is greater than the set threshold PP threshold , then the vibration is considered irregular, so the alarm sensor judgment condition is: std(V i )>std threshold or PP(V i )>PP threshold If the alarm sensing device 102 detects irregular vibration, an alarm is sounded.

[0058] The working principle of the present invention is:

[0059] When unlocking is required, the key 4 is inserted into the trigger sleeve 302. When the key 4 enters the trigger sleeve 302, the key 4 first pushes the toggle plate 309 to rotate, and pushes the triangular block 307 to move through the push rod 308, and then the unlocking groove 42 contacts the contact block 403. As the key 4 is continuously inserted, the comparison rod 402 is pushed, and then the end of the contact rod 306 away from the stabilizing shell 303 penetrates into the positioning hole 41. Since the depths of the positioning holes 41 are uneven, the distances moved by the contact rod 306 are also different. When the contact rod 306 moves, it squeezes the air inside the synchronization tube 311, and the locking block 304 begins to move under the squeezing effect of the air inside the synchronization tube 311, and breaks away from the contact with the card block 110 (it is worth noting that due to the different depths of the positioning holes 41, the distances moved by the four locking blocks 304 outside the trigger sleeve 302 are also different. Only when the four locking blocks 304 move at the same time can they no longer contact the card block 110);

[0060] At the same time, after the comparison rod 402 is pushed by the force, the upper end of the comparison touch rod 408 penetrates into the groove on the outer surface of the comparison rod 402. Only when the comparison rod 402 moves to a suitable distance, the positioning grooves on the outer surface of the comparison touch rod 408 can be parallel to each other. At this time, the synchronization block 409 can be clamped in the positioning groove on the outer surface of the comparison touch rod 408 under the elastic force of the extrusion spring 406, so that the trigger plate 405 is separated from the limit groove in the lock cylinder sleeve 101 under the action of the movement of the extrusion spring 406. At this time, the key 4 can be turned to drive the trigger sleeve 302 to rotate, and then the movable rod 205 starts to move under the action of the spiral groove 312, and drags the pulling rod 204 through the unlocking sleeve 206, so that the extension rod 109 drives the passive tube 107 to rotate, and then under the rotation of the passive tube 107, the towing belt 105 is wound by the winding rod 106, so that the hook 104 is no longer clamped to the card plate 103, and then the anti-theft cover 5 can be opened;

[0061] If the dust cover 3 is pried open directly, the reset rod 21 moves under the elastic force of the trigger spring 202 and jams the locking plate 203 in the locking groove 108, so that the passive tube 107 cannot rotate, and the anti-theft cover 5 naturally cannot be opened. At the same time, the alarm sensing device 102 sounds an alarm. To cancel the alarm, it is necessary to use the key 4 to unlock it normally. By moving the unlocking sleeve 206, the movable sleeve 201 is pushed to move, so that the locking plate 203 is no longer stuck in the locking groove 108, and the reset rod 21 is pushed by the movable sleeve 201 under the action of the limit ring and returns to the initial state, and then the alarm sensing device 102 stops sounding the alarm.

[0062] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed in the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A smart electric meter for preventing electricity theft, comprising a meter box (1), characterized in that: A digital display (2) for displaying current power consumption is fixedly mounted on the inner end of the meter box (1); a dust cover (3) for shielding against wind, rain and dust is arranged on the left side of the meter box (1); an anti-theft shell (6) is fixedly welded to the inner end of the meter box (1); an anti-theft cover (5) is rotatably mounted on the left end of the anti-theft shell (6); a card plate (103) is fixedly mounted on the right end of the anti-theft cover (5); a card hook (104) is rotatably mounted on the right end of the anti-theft shell (6); and the card hook (104) is clamped in the card plate (103). A rolling rod (106) is rotatably mounted on the right end, a towing belt (105) is wound around the outer surface of the rolling rod (106), and the free end of the towing belt (105) is fixedly connected to an end of the hook (104) away from the anti-theft cover (5), an alarm sensing device (102) is fixedly mounted on the inner end of the meter box (1), a lock core sleeve (101) is fixedly mounted on the inner front end of the meter box (1), a key (4) is arranged on the left side of the lock core sleeve (101), and an anti-theft unlocking device that can only be opened by the key (4) is arranged inside the lock core sleeve (101).

2. The anti-electricity theft smart meter according to claim 1, characterized in that: A reset rod (21) is slidably mounted on the inner end of the meter box (1), and the reset rod (21) corresponds to the alarm sensing device (102). A passive tube (107) is rotatably mounted on the right end of the anti-theft shell (6), and the passive tube (107) is fixedly connected to the rolling rod (106). A movable sleeve (201) is slidably mounted on the outer surface of the reset rod (21), and the movable sleeve (201) is located on the right side of the unlocking sleeve (206).

3. The anti-electricity theft smart meter according to claim 2, characterized in that: The outer surface of the reset rod (21) is provided with an unlocking sleeve (206), and an extension rod (109) is fixedly installed on one end of the unlocking sleeve (206) close to the reset rod (21), and a pulling rod (204) is rotatably installed on one end of the extension rod (109) away from the passive tube (107), and the free end of the pulling rod (204) is rotatably connected to the unlocking sleeve (206), and when the unlocking sleeve (206) moves in a direction close to the alarm sensing device (102), it can drive the passive tube (107) to rotate through the extension rod (109).

4. The anti-electricity theft smart meter according to claim 3, characterized in that: The anti-theft unlocking device comprises a trigger sleeve (302), the trigger sleeve (302) is rotatably mounted on the inner end of the lock core sleeve (101), a lock ring (301) is fixedly mounted on the outer surface of the trigger sleeve (302), a plurality of rectangular holes are opened on the outer surface of the trigger sleeve (302), a stabilizing shell (303) is penetrated in each of the rectangular holes, and the stabilizing shell (303) is fixedly connected to the lock ring (301).

5. The anti-electricity theft smart meter according to claim 4, characterized in that: A synchronous tube (311) is fixedly mounted on the inner end of the stabilizing shell (303), a locking block (304) is slidably mounted on the upper inner end of the synchronous tube (311), and a plurality of clamping blocks (110) are fixedly mounted on the inner end of the lock core sleeve (101), and the plurality of clamping blocks (110) are in contact with the outer surface of the locking block (304).

6. The anti-electricity theft smart meter according to claim 5, characterized in that: A plurality of contact rods (306) are slidably mounted on the inner end of the stabilizing shell (303), the right end of each contact rod (306) is inserted into the interior of the synchronization tube (311), the outer surface of each contact rod (306) is provided with a passive groove (310), and each passive groove (310) is provided with a triangular block (307), and the triangular blocks (307) are fixedly connected to each other.

7. The anti-electricity theft smart meter according to claim 6, characterized in that: A toggle plate (309) is rotatably mounted on the inner front end of the stabilizing shell (303), a push rod (308) is rotatably mounted on one end of the triangular block (307) close to the toggle plate (309), and a free end of the push rod (308) is rotatably connected to the toggle plate (309).

8. The anti-electricity theft smart meter according to claim 4, characterized in that: A locking shell (401) is fixedly mounted on the inner end of the trigger sleeve (302), a comparison rod (402) is passed through the inner end of the locking shell (401), and a plurality of comparison cylinders (404) are fixedly mounted on the inner bottom end of the locking shell (401), and the comparison cylinders (404) are fixedly connected to each other.

9. The anti-electricity theft smart meter according to claim 8, characterized in that: The inner end of the comparison cylinder (404) is provided with a comparison touch rod (408), the outer surface of the comparison rod (402) is provided with a plurality of grooves of different depths, and the grooves correspond to the comparison touch rod (408), the inner end of the locking shell (401) is slidably mounted with a trigger plate (405), the right end of the trigger plate (405) is fixedly mounted with a synchronization block (409), and the synchronization block (409) corresponds to the comparison touch rod (408).

10. The anti-electricity theft smart meter according to claim 4, characterized in that: The outer surface of the trigger sleeve (302) is provided with a spiral groove (312), the upper end of the unlocking sleeve (206) is fixedly mounted with a movable rod (205), and one end of the movable rod (205) away from the unlocking sleeve (206) is inserted into the spiral groove (312), and when the trigger sleeve (302) rotates, the spiral groove (312) drives the movable rod (205) to move.

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