An intelligent electricity meter

Abstract

This invention belongs to the field of electricity meter technology, specifically a smart meter; it includes a housing; a meter body; a loading and unloading box installed on the housing; the opening of the loading and unloading box is opposite to the housing; the meter body is fitted into the opening of the loading and unloading box, and the two are in sliding engagement; a stress-relieving base is installed inside the loading and unloading box; two stress-relieving bases are connected to a stress-relieving cylinder; a positioning lock assembly is provided on the stress-relieving cylinder; the positioning lock assembly includes a positioning slider; two positioning sliders are symmetrically connected to the stress-relieving cylinder; the positioning sliders and the stress-relieving cylinder are connected through each other, and the two are in sliding engagement; a limit stop device is provided on the loading and unloading box; the limit stop device includes a limit slot, which is provided on the side of the meter body; this allows for convenient and quick loading and unloading of the meter body without the need for any tools, and the loading and unloading operation can be completed with one hand, facilitating the replacement or maintenance of the meter body, reducing its limitations in loading, unloading and use, and improving the performance of the smart meter.

Description

Technical Field

[0001] This invention belongs to the field of electricity meter technology, specifically a smart meter. Background Technology

[0002] Smart meters are one of the core devices for data acquisition in smart grids. They not only undertake the tasks of collecting, measuring and transmitting raw electrical energy data, but also form the basis for information integration, analysis and optimization and information display. When existing smart meters are installed in meter boxes, tools are usually required for installation, removal or maintenance, which not only reduces the effectiveness of smart meters, but also limits their use. Summary of the Invention

[0003] In view of the above situation and to overcome the shortcomings of the prior art, the present invention provides a smart meter that effectively solves the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a smart meter, comprising a housing; a meter body; a loading and unloading box mounted on the housing; the opening of the loading and unloading box facing away from the housing; the meter body being fitted into the opening of the loading and unloading box, with the two slidingly engaged; a stress-relieving base mounted inside the loading and unloading box; two stress-relieving bases connected together to a stress-relieving cylinder; a positioning locking assembly provided on the stress-relieving cylinder for loading and unloading the meter body into the loading and unloading box; the positioning locking assembly including a positioning slider; two positioning sliders symmetrically connected to the stress-relieving cylinder; the positioning sliders and the stress-relieving cylinder... The columns are connected through each other and slide together; the loading and unloading box is equipped with a limit stop device for further limiting the installation of the meter body; the limit stop device includes a limit slot located on the side of the meter body; the meter body is also equipped with a positioning cavity; the positioning cavity and the limit slot are connected; a displacement base is installed inside the loading and unloading box; a winding roller is connected to the displacement base; a dust scraping and re-activation unit is provided on the winding roller for removing impurities from the meter body; the dust scraping and re-activation unit includes a re-activation cam installed on the outer wall of the loading and unloading box; the re-activation cam is rotatably connected to the winding roller.

[0005] Preferably, it includes a positioning cylinder installed on the bottom surface of the loading and unloading box; a positioning toothed column is fitted inside the positioning cylinder, and the two slide in cooperation; a positioning plate is installed on the end of the positioning toothed column near the meter body; the side of the positioning plate away from the positioning toothed column is located on the moving path of the meter body; the positioning plate is located between the positioning slider and the meter body; a locking pin is installed on the side of the positioning plate away from the positioning toothed column; the locking pin passes through the side of the meter body near the loading and unloading box and extends into the positioning cavity.

[0006] Preferably, the outer wall of the locking pin has a hollow groove; when the positioning plate contacts the meter body, the hollow groove on the locking pin is located in the positioning cavity; an electric telescopic rod is installed in the hollow groove; a locking limit block is connected to the output end of the electric telescopic rod; the outer wall of the locking pin has a through locking hole; signal patches are provided on the opposite surfaces of the positioning cylinder and the positioning toothed column; after the two signal patches contact, a signal is triggered and transmitted to the electric telescopic rod; the locking limit block is initially located in the hollow groove, and when the electric telescopic rod is started, the bottom surface of the positioning cavity contacts the locking limit block.

[0007] Preferably, it includes a stop cylinder, which is installed on the side of the loading and unloading box away from the limit slot; a stop limit plate is connected to the end of the stop cylinder away from the loading and unloading box. The stop block is connected through the stop cylinder, and the two slide together. A stop spring is sleeved on a stop cylinder; one end of the stop spring is fixedly connected to the stop limiting plate, and the other end is fixedly connected to the stop cross block.

[0008] Preferably, a stop block is installed on the side of the stop block near the loading / unloading box; a locking rod is installed on the side of the stop block away from the stop block; when the meter body moves to the maximum path inside the loading / unloading box, the stop block passes through the side of the loading / unloading box and connects with the limit slot; at this time, the locking rod is located in the positioning cavity and connects with the locking hole.

[0009] Preferably, it includes an active support, which is installed on the side of the positioning plate near the positioning slider; The driven square seat is installed on the side of the positioning slider near the positioning square plate; a movable hinge rod is movably connected to the driven square seat; two movable hinge rods are movably connected to the active square seat together. A stress relief spring is sleeved on a stress relief cylinder; one end of the stress relief spring is fixedly connected to the stress relief base, and the other end is fixedly connected to the positioning slider.

[0010] Preferably, it includes a retaining seat, which is mounted on the stop block; A through slot is provided on the outside of the loading and unloading box and extends to its inside; a fixed pulley is installed in the through slot; One end of the cable is installed on the fixed seat, and the other end is wrapped around the fixed pulley and connected to the winding roller.

[0011] Preferably, the winding roller is provided with a controlled-motion anti-displacement mechanism; the controlled-motion anti-displacement mechanism includes a displacement screw, which is installed on the side of the displacement base away from the winding roller; the displacement screw and the winding roller are rotatably connected; a spring is installed on the displacement screw; the end of the spring is fixedly connected to the displacement base; a displacement block is threaded onto the displacement screw; a displacement cylinder is connected to the displacement block; the displacement cylinder is connected through the displacement base on the side near the displacement block; the displacement cylinder and the displacement base are in sliding fit; a retaining block is installed on the displacement block; the retaining block is located on the outer wall of the positioning tooth column.

[0012] Preferably, the retaining block has a through retaining slide post on the side near the positioning tooth post; the retaining slide post and the retaining block are in sliding engagement; a retaining limiting plate is installed at the end of the retaining slide post away from the positioning tooth post; a retaining tooth block is installed at the end of the retaining slide post near the positioning tooth post; the positioning tooth post is located in the moving path of the retaining tooth block, and the two are in meshing engagement; a retaining spring is sleeved on the retaining slide post; one end of the retaining spring is connected to the retaining limiting plate, and the other end is connected to the retaining block.

[0013] Preferably, a repeating base is installed on the outer wall of the loading and unloading box; a repeating cylinder is provided through the repeating base near the repeating cam; the repeating cylinder and the repeating base are slidably fitted; a repeating contact is installed at the end of the repeating cylinder near the repeating cam; the repeating contact is located on the rotation path of the side wall of the repeating cam near the repeating cam; a repeating limit plate is installed at the end of the repeating cylinder away from the repeating cam; a repeating spring is sleeved on the repeating cylinder; one end of the repeating spring is fixedly connected to the repeating limit plate, and the other end is fixedly connected to the repeating base; a rubber scraper is installed on the repeating cylinder; the surface of the meter body is in contact with the rubber scraper.

[0014] The beneficial effects that can be achieved by the above embodiments of the present invention include: (1) The bottom surface of the positioning cavity contacts the locking limit block, thereby limiting the meter body located in the loading and unloading box, preventing it from detaching from the loading and unloading box. At this time, if the meter body is pulled outward, it will only strengthen the contact strength and friction between the bottom surface of the positioning cavity and the locking limit block, thereby initially positioning the meter body and avoiding instability during the installation process that could lead to positional deviation and affect the subsequent use of the meter body. This improves the installation stability and prevents the meter body from falling due to non-human factors or sudden situations during the installation process. The meter body is initially locked in the loading and unloading box, so that the staff only needs to focus on the subsequent operation and does not need to worry about the meter body during the installation process. The dislocation mechanism enhances the safety of the installation process. Furthermore, when disassembling the meter body, simply controlling the reset movement of the electric telescopic rod moves the locking limit block on its output end into the hollow groove, preventing it from contacting the bottom surface of the positioning cavity within the meter body. This allows the meter body to detach from the positioning plate in the loading / unloading box, completing the disassembly operation. This makes the installation and disassembly of the meter body convenient and quick, requiring no tools and allowing for single-handed operation. It facilitates the replacement of different models and functions of the meter body, simplifying maintenance and reducing limitations in meter body installation and disassembly. It also improves the usability of the smart meter. (2) The rubber scraper moves back and forth on the surface of the meter body to clean the dust accumulated on the meter body during use, so as to avoid the staff from being covered with too much dust and damaging their image when maintaining or replacing the meter body, and at the same time to protect the physical and mental health of the staff, thereby reducing their workload; at the same time, it can also actively pull the stop block to actively clean the dust adhering to the meter body, so as to avoid the accumulation of too much dust affecting its use effect and performance, ensuring the heat dissipation performance of the meter body during use, and further improving its use effect; (3) When the meter body is pushed into the loading and unloading box and the positioning plate moves synchronously, the active seat on it causes the positioning slider on the driven seat to move at the unloading cylinder under the action of the movable hinge, so that the two positioning sliders move in opposite directions and the unloading spring is in a buffer state, so that the positioning plate gradually approaches the unloading cylinder. The unloading force of the positioning plate and the buffer force brought by the unloading spring are used to reduce the impact force on the meter body during the installation process, further improving the stability of the meter body during installation and subsequent use; at the same time, the resistance brought by the unloading spring is used to control the installation speed of the meter body, avoiding excessive force on the meter body, which causes the moving speed during installation to be too fast, causing collision with other parts and damaging the meter body, thus improving the service life and installation effect of the meter body. (4) The stop block moves back to its original position, passing through the side of the loading / unloading box and connecting with the limiting slot. This fixes the meter body in that position, preventing unstable shaking of the meter body during use after installation, which would affect its performance. This further improves the installation and performance of the meter body, reducing the limitations of its use and installation. It is worth mentioning that when the stop block connects with the limiting slot, the locking rod on the stop block also enters the locking hole, further limiting the locking pin and preventing the positioning plate on it from being fixed in place. The system prevents the meter body from shaking during use, thus avoiding any impact on its performance. It also prevents the locking pin from dislodging, which could lead to the initial fixation of the meter body. This further enhances the stability of the meter body, improving its safety and redundancy. Notably, when the meter body is positioned, the buffer spring cannot return to its original position, causing its elastic force to act on the positioning plate. This strengthens the contact friction and strength between the stop block and the limit slot, preventing the stop block from dislodging due to non-human factors and further improving the installation effect of the meter body. (5) When the retaining block approaches the positioning tooth post, the retaining block moves closer to the positioning tooth post under the action of the retaining slide and the retaining spring until the two mesh. This is used to limit the positioning tooth post and prevent the positioning square plate on it from moving during use, which would prevent it from supporting the meter body after installation. This further improves the installation and use effect of the meter body, and ensures that the positioning square plate can always be in contact with the meter body for support during use, thus improving its stability. When the meter body is impacted during use, the impact force will be transmitted to the positioning tooth post through the positioning square plate. The buffer force brought by the retaining spring is used to further reduce the impact force on the meter body during use, further improving the stability and service life of the meter body, thereby reducing its limitations during use. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0016] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the positioning cavity of the present invention; Figure 3 This is a schematic diagram of the rubber scraper structure of the present invention; Figure 4 This is an exploded view of the loading and unloading box of the present invention; Figure 5 This is a cross-sectional view of the movable hinge rod of the present invention; Figure 6 This is a schematic diagram of the positioning square plate structure of the present invention; Figure 7 This is a schematic diagram of the locking rod structure of the present invention; Figure 8 For the present invention Figure 4 A magnified view of the structure at point A in the middle; Figure 9 This is a schematic diagram of the driven square seat structure of the present invention; Figure 10 This is a schematic diagram of the displacement screw structure of the present invention; Figure 11 This is a schematic diagram of the retaining tooth block structure of the present invention; In the diagram: 1. Meter body; 2. Loading / unloading box; 3. Unloading base; 4. Unloading cylinder; 5. Positioning slider; 6. Limit slot; 7. Positioning cavity; 8. Displacement base; 9. Winding roller; 10. Reciprocating cam; 11. Positioning cylinder; 12. Positioning toothed column; 13. Positioning square plate; 14. Locking pin; 15. Hollow groove; 16. Electric telescopic rod; 17. Locking limit block; 18. Locking socket; 19. Signal patch; 20. Stop cylinder; 21. Stop cross block; 22. Stop spring; 23. 24. Stop block; 25. Locking rod; 26. Driving seat; 27. Movable hinge; 28. Unloading spring; 29. ​​Fixed seat; 30. Fixed pulley; 31. Cable; 32. Displacement screw; 33. Spring spring; 34. Displacement block; 35. Displacement cylinder; 36. Fixed block; 37. Fixed slide; 38. Fixed tooth block; 39. Fixed spring; 40. Reversing base; 41. Reversing cylinder; 42. Reversing contact block; 43. Reversing spring; 44. Rubber scraper. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] Implementation examples, by Figures 1 to 11The present invention includes a housing; a meter body 1; a loading / unloading box 2 mounted on the housing; the opening of the loading / unloading box 2 facing away from the housing; the meter body 1 being fitted into the opening of the loading / unloading box 2, with the two in sliding engagement; a stress-relieving base 3 installed inside the loading / unloading box 2; two stress-relieving bases 3 being connected together to a stress-relieving cylinder 4; a positioning locking assembly provided on the stress-relieving cylinder 4 for loading / unloading the meter body 1 into the loading / unloading box 2; the positioning locking assembly includes positioning sliders 5; two positioning sliders 5 being symmetrically connected to the stress-relieving cylinder 4; the positioning sliders 5 and the stress-relieving cylinder 4 being through-connected, with the two in sliding engagement; and a limit stop device provided on the loading / unloading box 2 for... The meter body 1 is further limited after installation; a positioning cavity 7 is provided inside the meter body 1; a displacement base 8 is installed inside the loading and unloading box 2; a winding roller 9 is connected to the displacement base 8; a dust scraping and re-moving unit is provided on the winding roller 9 to remove impurities on the meter body 1; a positioning cylinder 11 is installed on the bottom surface inside the loading and unloading box 2; a positioning toothed column 12 is fitted inside the positioning cylinder 11, and the two slide in cooperation; a positioning square plate 13 is installed at the end of the positioning toothed column 12 near the meter body 1; the side of the positioning square plate 13 away from the positioning toothed column 12 is located on the moving path of the meter body 1; the positioning square plate 13 is located between the positioning slider 5 and the meter body 1. A locking pin 14 is installed on the side of the positioning plate 13 away from the positioning toothed post 12; the locking pin 14 passes through the side of the meter body 1 near the loading and unloading box 2 and extends into the positioning cavity 7; the outer wall of the locking pin 14 is provided with a hollow groove 15; when the positioning plate 13 contacts the meter body 1, the hollow groove 15 on the locking pin 14 is located in the positioning cavity 7; an electric telescopic rod 16 is installed in the hollow groove 15; a locking limit block 17 is connected to the output end of the electric telescopic rod 16; a through locking hole 18 is provided on the outer wall of the locking pin 14; signal patches 19 are provided on the opposite surfaces of the positioning cylinder 11 and the positioning toothed post 12; the two signal patches 19 Upon contact, a trigger signal is transmitted to the electric telescopic rod 16; the locking limit block 17 is initially located in the hollow groove 15, and when the electric telescopic rod 16 is activated, the bottom surface of the positioning cavity 7 contacts the locking limit block 17; the active seat 25 is installed on the side of the positioning plate 13 near the positioning slider 5; the driven seat 26 is installed on the side of the positioning slider 5 near the positioning plate 13; a movable hinge rod 27 is movably connected to the driven seat 26; the two movable hinge rods 27 are movably connected to the active seat 25; the unloading spring 28 is sleeved on the unloading cylinder 4; one end of the unloading spring 28 is fixedly connected to the unloading base 3, and the other end is fixedly connected to the positioning slider 5; When the operator installs the meter body 1 into the casing (meter box), they align the meter body 1 with the loading / unloading box 2 on the casing, causing the meter body 1 to move within the loading / unloading box 2. This movement brings the meter body 1 into contact with the positioning plate 13 inside the loading / unloading box 2, causing the positioning pin 12 on it to move within the positioning cylinder 11. This allows the locking pin 14 on the positioning plate 13 to pass through the bottom of the meter body 1 and enter the positioning cavity 7 inside. When the meter body 1 reaches its maximum position within the loading / unloading box 2, the signal patches 19 on the opposite sides of the positioning cylinder 11 and the positioning pin 12 come into contact, and the two signal patches... When piece 19 contacts, a trigger signal is transmitted to the electric telescopic rod 16. At this time, the hollow slot 15 on the locking pin 14 is already located inside the positioning cavity 7. When the electric telescopic rod 16 is activated, the locking limit block 17 on its output end is no longer located inside the hollow slot 15, but moves to the bottom surface inside the positioning cavity 7, so that the bottom surface inside the positioning cavity 7 contacts the locking limit block 17. This limits the meter body 1 located inside the loading and unloading box 2, preventing it from detaching from the loading and unloading box 2. If the meter body 1 is pulled outward at this time, it will only strengthen the contact strength and friction between the bottom surface inside the positioning cavity 7 and the locking limit block 17, thereby protecting the installed meter. The initial positioning of the meter body 1 prevents instability during installation, which could lead to positional displacement and affect the subsequent use of the meter body 1. This improves installation stability and prevents the meter body 1 from falling due to loss of clamping force caused by non-human factors or unforeseen circumstances during installation. It initially locks the meter body 1 within the loading / unloading box 2, allowing workers to focus on subsequent operations without worrying about dislocation during installation, thus enhancing installation safety. Furthermore, when disassembling the meter body 1 is required, simply controlling the reset movement of the electric telescopic rod 16 engages the lock on its output end. The position limit block 17 is reset and moved into the hollow groove 15, so that the locking limit block 17 no longer contacts the bottom surface of the positioning cavity 7 inside the meter body 1. This allows the meter body 1 to be disconnected from the positioning plate 13 inside the loading and unloading box 2, thus completing the disassembly operation of the meter body 1. This makes the installation and disassembly of the meter body 1 convenient and quick, and can be completed with one hand without the need for any tools. This facilitates the replacement of different models and functions of the meter body 1, and makes it easier to perform maintenance operations. It reduces the limitations of the installation and disassembly of the meter body 1, and also improves the use effect of the smart meter. Simultaneously, when the meter body 1 is pushed into the loading and unloading box 2 and the positioning plate 13 is moved synchronously, the active seat 25 on it, under the action of the movable hinge 27, causes the positioning slider 5 on the driven seat 26 to move at the unloading cylinder 4, so that the two positioning sliders 5 move in opposite directions. The unloading spring 28 is in a buffer state, so that the positioning plate 13 gradually approaches the unloading cylinder 4. The unloading force of the positioning plate 13 and the buffer force brought by the unloading spring 28 are used to reduce the impact force on the meter body 1 during the installation process, further improving the stability of the meter body 1 during installation and subsequent use. At the same time, the resistance brought by the unloading spring 28 is used to control the installation speed of the meter body 1, avoiding excessive force on the meter body 1, which would cause it to move too fast during installation and collide with other parts, resulting in damage to the meter body 1. This improves the service life of the meter body 1 and the installation effect.

[0019] The limiting and stopping device in this embodiment includes a limiting slot 6, which is disposed on the side of the meter body 1; a positioning cavity 7 and a limiting slot 6 are connected; a stopping cylinder 20 is installed on the side of the loading and unloading box 2 away from the limiting slot 6; a stopping plate is connected to the end of the stopping cylinder 20 away from the loading and unloading box 2; a stopping cross block 21 is connected through the stopping cylinder 20, and the two are slidably engaged; a stopping spring 22 is sleeved on the stopping cylinder 20; one end of the stopping spring 22 is connected to the stopping plate. The limit plate is fixedly connected at one end, and the other end is fixedly connected to the stop block 21; a stop plug 23 is installed on the side of the stop block 21 near the loading and unloading box 2; a locking plug 24 is installed on the side of the stop plug 23 away from the stop block 21; when the meter body 1 moves to the maximum path in the loading and unloading box 2, the stop plug 23 passes through the side of the loading and unloading box 2 and is connected to the limit slot 6; at this time, the locking plug 24 is located in the positioning cavity 7 and is connected to the locking hole 18; When the meter body 1 is pushed to its maximum movement distance within the loading / unloading box 2, it indicates that the meter body 1 has moved to the designated installation position. At this point, the stop block 21, which was originally pulled outward, is released, allowing the stop spring 22, which was in a buffer state, to reset. This causes the stop block 21 to reset and move on the stop cylinder 20, causing the stop plug 23 on the stop block 21 to reset and move, passing through the side of the loading / unloading box 2 and connecting with the limit slot 6. This limits and fixes the meter body 1 in this position, ensuring it is fixed in its current location. This prevents unstable shaking of the meter body 1 during use after installation, which could affect its performance. This further improves the installation effect of the meter body 1 and enhances its usability, reducing the limitations of the meter body 1 in use and installation. It is worth mentioning that when the stop plug 23 and the limit slot... After connection 6, the locking rod 24 on the stop plug 23 enters the locking hole 18, further limiting the locking pin 14 and preventing the positioning plate 13 on it from shaking during the use of the meter body 1, which would affect its performance. At the same time, it prevents the meter body 1 from being dislodged due to the dislocation of the locking pin 14, which would further improve the stability of the meter body 1 and enhance its safety and redundancy during use. It is worth mentioning that when the meter body 1 is limited to the current position, the unloading spring 28 in the buffer state cannot be reset and move, so that its elastic force acts on the positioning plate 13, thereby strengthening the contact friction and strength between the stop plug 23 and the limiting slot 6, preventing the stop plug 23 from being dislodged due to non-human factors during use, and further improving the installation effect of the meter body 1.

[0020] The dust scraping re-action unit of this embodiment includes a re-action cam 10, which is installed on the outer wall of the loading and unloading box 2; the re-action cam 10 is rotatably connected to the winding roller 9; a fixed seat 29 is installed on the stop block 21; a through groove is provided on the outer side of the loading and unloading box 2 and extends to its inner side; a fixed pulley 30 is installed in the through groove; a cable 31 is installed on the fixed seat 29 at one end, and the other end passes around the fixed pulley 30 and is wound and connected to the winding roller 9; a re-action base 40 is installed on the outer wall of the loading and unloading box 2; a re-action cylinder 41 is provided through the re-action base 40 near the re-action cam 10. The repeating cylinder 41 and the repeating base 40 are in sliding fit; a repeating contact block 42 is installed on the end of the repeating cylinder 41 near the repeating cam 10; the repeating contact block 42 is located on the side of the repeating cam 10 near the repeating cam 10 and on the rotation path of the side wall of the repeating cam 10; a repeating limit plate is installed on the end of the repeating cylinder 41 away from the repeating cam 10; a repeating spring 43 is sleeved on the repeating cylinder 41; one end of the repeating spring 43 is fixedly connected to the repeating limit plate and the other end is fixedly connected to the repeating base 40; a rubber scraper 44 is installed on the repeating cylinder 41; the surface of the meter body 1 is in contact with the rubber scraper 44; Whether the meter body 1 is disassembled or installed, the stop block 21 will move, causing it to synchronously drive the fixed seat 29 to move. This causes the cable 31 on the cable to rotate under the action of the fixed pulley 30, driving the winding roller 9 to unwind or rewind. This causes the repeating cams 10 and the displacement screw 32 on both sides to rotate synchronously. This puts the spring spring 33 on the displacement screw 32 in a buffered or reset state, causing the side wall of the rotating repeating cam 10 to continuously contact the repeating contact block 42. This causes the repeating cylinder 41 on the repeating cam to move back and forth at the repeating base 40, keeping the repeating spring 43 in a buffered and reset state, thus driving the repeating cylinder... The rubber scraper 44 on column 41 moves back and forth, moving across the surface of the meter body 1 to clean the dust accumulated during use. This prevents workers from getting too much dust on their person during maintenance or replacement of the meter body 1, thus protecting their physical and mental health and reducing their workload. Simultaneously, it can actively pull the stop block 21 to actively clean the dust adhering to the meter body 1, preventing excessive dust accumulation from affecting its performance and ensuring its heat dissipation, further improving its usability.

[0021] In this embodiment, a control and anti-displacement mechanism is provided on the winding roller 9. The control and anti-displacement mechanism includes a displacement screw 32, which is installed on the side of the displacement base 8 away from the winding roller 9. The displacement screw 32 and the winding roller 9 are rotatably connected. A spring 33 is installed on the displacement screw 32. The end of the spring 33 is fixedly connected to the displacement base 8. A displacement block 34 is threadedly connected to the displacement screw 32. A displacement cylinder 35 is connected to the displacement block 34. The displacement cylinder 35 is connected through the displacement base 8 on the side near the displacement block 34. The displacement cylinder 35 and the displacement base 8 are slidably fitted. A displacement cylinder 35 is installed on the displacement block 34. A retaining block 36 is located on the outer wall of the positioning tooth post 12. A retaining slide post 37 is provided through the retaining block 36 on the side near the positioning tooth post 12. The retaining slide post 37 and the retaining block 36 are in sliding engagement. A retaining limit plate is installed at the end of the retaining slide post 37 away from the positioning tooth post 12. A retaining tooth block 38 is installed at the end of the retaining slide post 37 near the positioning tooth post 12. The positioning tooth post 12 is located in the moving path of the retaining tooth block 38, and the two are in meshing engagement. A retaining spring 39 is sleeved on the retaining slide post 37. One end of the retaining spring 39 is connected to the retaining limit plate, and the other end is connected to the retaining block 36. When the displacement screw 32 rotates, its threaded displacement block 34 moves at the displacement base 8 via the displacement cylinder 35, causing the retaining block 36 on the displacement block 34 to move closer to or further away from the positioning toothed column 12. Specifically: when the stop block 21 is pulled outward, the retaining block 36 moves away from the positioning toothed column 12; when the stop block 21 returns to its original position, the retaining block 36 moves closer to the positioning toothed column 12; when the retaining block 36 moves closer to the positioning toothed column 12, the retaining block 36, under the action of the retaining slide 37 and the retaining spring 39, drives the retaining toothed block 38 to move closer to the positioning toothed column 12 until the two engage, thus limiting the positioning toothed column 12. The design prevents the positioning plate 13 from shifting during use, thus ensuring proper support for the meter body 1 after installation. This further enhances the installation and usability of the meter body 1, ensuring that the positioning plate 13 remains in constant contact with the meter body 1 during use, thereby improving its stability. When the meter body 1 is subjected to impact during use, the impact force is transmitted through the positioning plate 13 to the positioning toothed post 12. The buffering force provided by the retaining spring 39 further reduces the impact force on the meter body 1 during use, further improving the stability and service life of the meter body 1, thereby reducing its limitations during use.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A smart meter, comprising a housing; a meter body; characterized in that: A loading / unloading box is installed on the housing; the opening of the loading / unloading box faces away from the housing; the meter body is fitted into the opening of the loading / unloading box, and the two are in sliding engagement; a stress-relieving base is installed inside the loading / unloading box; two stress-relieving bases are connected to a stress-relieving cylinder; a positioning lock assembly is provided on the stress-relieving cylinder for loading / unloading the meter body into the loading / unloading box; the positioning lock assembly includes a positioning slider; two positioning sliders are symmetrically connected to the stress-relieving cylinder; the positioning sliders and the stress-relieving cylinder are connected through each other, and the two are in sliding engagement; the loading / unloading box A limit stop device is provided on the meter body to further limit its position after installation. The limit stop device includes a limit slot located on the side of the meter body. A positioning cavity is also provided inside the meter body. The positioning cavity and the limit slot are connected. A displacement base is installed inside the loading and unloading box. A winding roller is connected to the displacement base. A dust scraping and reactivation unit is provided on the winding roller to remove impurities from the meter body. The dust scraping and reactivation unit includes a reactivation cam installed on the outer wall of the loading and unloading box. The reactivation cam is rotatably connected to the winding roller.

2. A smart meter according to claim 1, characterized in that: The device includes a positioning cylinder installed on the bottom surface of the loading and unloading box; a positioning toothed column is fitted inside the positioning cylinder, and the two slide in cooperation; a positioning plate is installed on the end of the positioning toothed column near the meter body; the side of the positioning plate away from the positioning toothed column is located on the moving path of the meter body; the positioning plate is located between the positioning slider and the meter body; a locking pin is installed on the side of the positioning plate away from the positioning toothed column; the locking pin passes through the side of the meter body near the loading and unloading box and extends into the positioning cavity.

3. A smart meter according to claim 2, characterized in that: The outer wall of the locking pin has a hollow groove; when the positioning plate contacts the meter body, the hollow groove on the locking pin is located in the positioning cavity; an electric telescopic rod is installed in the hollow groove; a locking limit block is connected to the output end of the electric telescopic rod; the outer wall of the locking pin has a through locking hole; signal patches are provided on the opposite surfaces of the positioning cylinder and the positioning toothed column; after the two signal patches come into contact, a signal is triggered and transmitted to the electric telescopic rod; the locking limit block is initially located in the hollow groove, and when the electric telescopic rod is started, the bottom surface of the positioning cavity contacts the locking limit block.

4. A smart meter according to claim 1, characterized in that: Includes a stop cylinder, installed on the side of the loading / unloading box away from the limit slot; the end of the stop cylinder away from the loading / unloading box is connected to a stop limit plate; The stop block is connected through the stop cylinder, and the two slide together. A stop spring is sleeved on a stop cylinder; one end of the stop spring is fixedly connected to the stop limiting plate, and the other end is fixedly connected to the stop cross block.

5. A smart meter according to claim 4, characterized in that: A stop block is installed on the side of the stop block near the loading and unloading box; a locking rod is installed on the side of the stop block away from the stop block; when the meter body moves to the maximum path inside the loading and unloading box, the stop block passes through the side of the loading and unloading box and connects with the limit slot; at this time, the locking rod is located in the positioning cavity and connects with the locking hole.

6. A smart meter according to claim 2, characterized in that: Includes an active support, installed on the side of the positioning plate near the positioning slider; The driven square seat is installed on the side of the positioning slider near the positioning square plate; a movable hinge rod is movably connected to the driven square seat; two movable hinge rods are movably connected to the active square seat together. A stress relief spring is sleeved on a stress relief cylinder; one end of the stress relief spring is fixedly connected to the stress relief base, and the other end is fixedly connected to the positioning slider.

7. A smart meter according to claim 4, characterized in that: Includes a retaining seat, which is mounted on the stop block; A through slot is provided on the outside of the loading and unloading box and extends to its inside; a fixed pulley is installed in the through slot; One end of the cable is installed on the fixed seat, and the other end is wrapped around the fixed pulley and connected to the winding roller.

8. A smart meter according to claim 1, characterized in that: The winding roller is equipped with a controlled-motion anti-displacement mechanism; the controlled-motion anti-displacement mechanism includes a displacement screw, which is installed on the displacement base away from the winding roller; the displacement screw and the winding roller are rotatably connected; a spring is installed on the displacement screw; the end of the spring is fixedly connected to the displacement base; a displacement block is threaded onto the displacement screw; a displacement cylinder is connected to the displacement block; the displacement cylinder is connected through the displacement base near the displacement block; the displacement cylinder and the displacement base are in sliding fit; a retaining block is installed on the displacement block; the retaining block is located on the outer wall of the positioning tooth column.

9. A smart meter according to claim 8, characterized in that: The retaining block has a through retaining slide post on the side near the positioning tooth post; the retaining slide post and the retaining block are in sliding engagement; a retaining limiting plate is installed at the end of the retaining slide post away from the positioning tooth post; a retaining tooth block is installed at the end of the retaining slide post near the positioning tooth post; the positioning tooth post is located in the moving path of the retaining tooth block, and the two are in meshing engagement; a retaining spring is sleeved on the retaining slide post; one end of the retaining spring is connected to the retaining limiting plate, and the other end is connected to the retaining block.

10. A smart meter according to claim 1, characterized in that: A repeating base is installed on the outer wall of the loading and unloading box; a repeating cylinder is provided through the repeating base near the repeating cam; the repeating cylinder and the repeating base are in sliding fit; a repeating contact is installed at the end of the repeating cylinder near the repeating cam; the repeating contact is located on the rotation path of the side wall of the repeating cam near the repeating cam; a repeating limit plate is installed at the end of the repeating cylinder away from the repeating cam; a repeating spring is sleeved on the repeating cylinder; one end of the repeating spring is fixedly connected to the repeating limit plate, and the other end is fixedly connected to the repeating base; a rubber scraper is installed on the repeating cylinder; the surface of the meter body is in contact with the rubber scraper.

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