Intelligent electric meter verification device

Abstract

The invention discloses an intelligent electric meter verification device, and belongs to the field of electric meter detection. An intelligent electric meter verification device comprises a detection table and a verification instrument, the top of the detection table is fixedly connected with a detection frame, the detection frame is fixedly connected with an upper transverse plate and a lower transverse plate, multiple sets of mounting plates are fixed between the upper transverse plate and the lower transverse plate at equal intervals, the intelligent electric meter verification device further comprises a containing table, the containing table is fixed to the mounting plates, and the verification instrument is arranged on the containing table. The number of the containing tables is the same as that of the mounting plates, airflow grooves are formed in the containing tables, and vibration parts for applying vibration to the containing tables to simulate real working conditions are arranged in the airflow grooves; through the attraction effect between the lower magnetic plate and the upper magnetic plate, the whole containing table generates a vibration effect in the verification and detection process, so that vibration environment simulation of electricity meter detection is achieved, the performance and reliability of an electricity meter during mechanical vibration in actual use can be evaluated and verified, and the verification efficiency is improved. And the accuracy of the verification result of the electric meter is improved.

Description

Technical Field

[0001] This invention relates to the field of electricity meter testing technology, and in particular to a smart electricity meter calibration device. Background Technology

[0002] With the development of smart grids, smart meters, as a key component of smart grids, are becoming increasingly important. Smart meters not only undertake the task of electricity metering, but also have multiple functions such as data processing, real-time monitoring, automatic control, and information interaction. This enables smart meters to play an important role in improving power supply reliability and optimizing energy management. In order to ensure that the metering accuracy of smart meters can meet the usage requirements, it is usually necessary to verify and test the metering accuracy of smart meters.

[0003] Currently, traditional verification devices place smart meters in a static environment. However, the actual working environment of smart meters is quite complex. For example, when installed outdoors or on the outer wall of mechanical equipment, they are subjected to various dynamic loads, causing them to be in a vibration environment. The results of traditional static verification tests are difficult to assess and verify the performance and reliability of the meter when encountering mechanical vibrations in actual use, thus reducing the accuracy of the verification test results. Moreover, at the connection between the smart meter and the tester, the resistance of the wiring terminal generates heat, affecting the transmission of various data indicators in the circuit and causing errors in the verification results. Therefore, a smart meter verification device is proposed. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that traditional static verification and testing methods are difficult to evaluate and verify the performance and reliability of electricity meters when they encounter mechanical vibrations in actual use, and that the heat generated by the resistance at the wiring terminals can lead to errors in the verification results, thereby reducing the accuracy of the verification and testing results. Therefore, this invention proposes a smart electricity meter verification device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A smart meter calibration device includes a testing platform and a calibrator. A testing frame is fixedly connected to the top of the testing platform, and an upper horizontal plate and a lower horizontal plate are fixedly connected to the testing frame. Multiple sets of mounting plates are fixed at equal intervals between the upper and lower horizontal plates. The device also includes: a holding platform, which is fixed to the mounting plates, and the number of holding platforms is the same as the number of mounting plates. An airflow groove is provided inside the holding platform, and a vibration part is provided in the airflow groove to apply vibration to the holding platform to simulate real working conditions. A piston box is fixed to the side wall of the holding platform, and two sets of piston boxes are equally spaced at each set of holding platforms. A clamping plate is slidably connected inside the piston box, and a clamping spring is fixedly connected between the side wall of the clamping plate and the inner wall of the piston box. An inflation part is provided on the holding platform to inflate the piston box to improve the clamping effect.

[0007] To facilitate simultaneous testing of multiple sets of electricity meters and improve calibration efficiency, preferably, the calibrator is fixed on the side wall of the upper horizontal plate, and wiring terminals are fixed on both the upper and lower horizontal plate side walls. A data display screen is fixedly connected to the side wall of the upper horizontal plate, and the wiring terminals are electrically connected to the calibrator and the data display screen. The number of calibrators, wiring terminals, and data display screens is matched with the number of storage platforms, meaning that each set of storage platforms can independently perform the calibration of electricity meters.

[0008] To better simulate the actual working conditions of the meter and improve the accuracy of the verification results, preferably, the vibration part includes an impact plate, which is slidably connected in the airflow groove. An upper magnetic plate is fixedly connected to the bottom of the impact plate. A reset chamber is fixedly connected between the holding platform and the lower horizontal plate. The reset chamber is connected to the airflow groove. A reset slide plate is slidably connected inside the reset chamber. A reset spring is fixedly connected between the reset slide plate and the bottom of the inner cavity of the reset chamber. The bottom of the impact plate is fixedly connected to the top of the reset slide plate.

[0009] Furthermore, a drive motor is fixedly connected to the side wall of the lower horizontal plate, and a linkage shaft is fixedly connected to the output end of the drive motor. The other end of the linkage shaft passes through the lower horizontal plate and is fixedly connected to a lower magnetic plate. The lower magnetic plate and the upper magnetic plate are magnetically attracted to each other.

[0010] To facilitate heat dissipation at the wiring connection of the electricity meter and improve the accuracy of the verification data, preferably, the holding platform has multiple sets of guide holes at equal intervals on the side facing the mounting plate, and the guide holes are connected to the inner cavity of the airflow groove.

[0011] To improve the stability of the meter, preferably, the inflation part includes an inflation tube, which is fixed between the two sets of piston boxes, and both ends of the inflation tube are respectively connected to the inner cavities of the two piston boxes. One side of the reset chamber is fixed and connected to an exhaust pipe, and the other end of the exhaust pipe is connected to the inner cavity of the inflation tube.

[0012] Furthermore, a negative pressure pipe is fixed and connected to the other side of the reset chamber, a negative pressure groove is opened in the holding platform, the other end of the negative pressure pipe passes through the airflow groove and is connected to the inner cavity of the negative pressure groove after passing through the impact plate, and an adsorption slot is opened at the top of the negative pressure groove, and the adsorption slot is located directly below the area where the meter is placed on the holding platform.

[0013] Furthermore, both the inflation tube and the negative pressure tube are equipped with one-way valves, and the thrust required to open the two sets of one-way valves is in opposite directions.

[0014] To facilitate the insertion of the meter between the two clamping plates and improve the convenience of testing, preferably, the end inlet side of the clamping plate is inclined, and the inclined surfaces of the clamping plates on both sides of the same set of holding platforms are arranged in a figure-eight shape.

[0015] To facilitate simultaneous multi-station testing and improve testing efficiency, preferably, the number of drive motors is the same as the number of serving tables, that is, each serving table can be independently subjected to vibration simulation testing, and partition seams are provided on the upper and lower horizontal plates between two adjacent serving tables.

[0016] Compared with the prior art, the present invention provides a smart meter verification device, which has the following beneficial effects:

[0017] 1. This smart meter calibration device uses the attraction between the lower and upper magnetic plates to cause the entire holding platform to vibrate during the calibration process. This simulates the vibration environment for meter testing, allowing for the evaluation and verification of the meter's performance and reliability when encountering mechanical vibrations in actual use, thereby improving the accuracy of the meter calibration results.

[0018] 2. This smart meter calibration device, through the reciprocating sliding of the upper magnetic plate, can accelerate the airflow at the connection between the meter and the terminal, improve the heat exchange efficiency of the airflow, effectively cool the connection, reduce the error caused by the heat generated by resistance, and ensure the accuracy of the calibration data.

[0019] 3. During the reciprocating sliding of the upper magnetic plate, the smart meter calibration device first fills the piston box with air from the reset chamber, thereby increasing the clamping force of the two clamping plates. Secondly, it draws the air from the negative pressure groove into the reset chamber, thereby generating a negative pressure suction effect at the bottom of the meter. This ensures that the meter will not undergo excessive displacement during vibration simulation testing, thus guaranteeing the stability of each connection point and improving the accuracy of the final test results. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a smart meter verification device proposed in this invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the overall structure of a smart meter verification device proposed in this invention. Figure 2 ;

[0022] Figure 3 This is a partial front view schematic diagram of a smart meter verification device proposed in this invention;

[0023] Figure 4 This is a partial side view of the structure of a smart meter verification device proposed in this invention;

[0024] Figure 5 This is a partial cross-sectional view of a smart meter verification device proposed in this invention. Figure 1 ;

[0025] Figure 6 This is a schematic diagram of the internal structure of the piston box of a smart meter calibration device proposed in this invention;

[0026] Figure 7 This is a partial cross-sectional view of a smart meter verification device proposed in this invention. Figure 2 ;

[0027] Figure 8 This invention proposes a smart meter verification device. Figure 7 A magnified structural diagram of region A in the middle.

[0028] In the diagram: 1. Testing platform; 2. Testing frame; 21. Upper horizontal plate; 22. Lower horizontal plate; 23. Mounting plate; 24. Partition seam; 3. Container platform; 31. Airflow channel; 32. Guide hole; 33. Negative pressure channel; 331. Adsorption slot; 4. Calibrator; 41. Wiring terminal; 42. Data display screen; 5. Piston box; 51. Clamping plate; 52. Clamping spring; 6. Impact plate; 61. Upper magnetic plate; 62. Reset chamber; 621. Reset slide plate; 622. Reset spring; 63. Drive motor; 631. Linkage shaft; 64. Lower magnetic plate; 7. Inflation pipe; 71. Exhaust pipe; 72. Negative pressure pipe. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] Example:

[0032] Reference Figures 1-8 A smart meter calibration device includes a testing platform 1 and a calibrator 4. The calibrator 4 adopts existing mature technology, and the specific model can be HDYM-3. A testing frame 2 is fixedly connected to the top of the testing platform 1. An upper horizontal plate 21 and a lower horizontal plate 22 are fixedly connected to the testing frame 2. Multiple sets of mounting plates 23 are fixed at equal intervals between the upper horizontal plate 21 and the lower horizontal plate 22. The device also includes a holding platform 3, which is fixed on the mounting plates 23. The number of holding platforms 3 is the same as the number of mounting plates 23. An airflow groove 31 is opened in the holding platform 3, and an airflow channel is provided in the airflow groove 31 to direct airflow towards the holding platform. The platform 3 applies vibration to simulate the vibration of real working conditions; the piston box 5 is fixed on the side wall of the platform 3, and two sets of piston boxes 5 are equally spaced at each set of platform 3. The piston box 5 is slidably connected to the clamping plate 51. The end of the clamping plate 51 is inclined, and the inclined surfaces of the clamping plates 51 on both sides of the same set of platform 3 are arranged in a figure-eight shape. The side wall of the clamping plate 51 and the inner wall of the piston box 5 are fixedly connected to the clamping spring 52. The platform 3 is provided with an inflation part to inflate the piston box 5 to improve the clamping effect.

[0033] With the above structure, the smart meter to be calibrated is inserted into the holding platform 3 along the clamping plates 51 on both sides. During this process, the side wall of the meter will be squeezed against the clamping plate 51, causing it to slide towards the side of the compression clamping spring 52. Finally, under the rebound action of the clamping spring 52, the meter is clamped and fixed on the holding platform 3, which facilitates the removal and placement of the meter and improves the convenience of calibration. Then, the meter can be calibrated and tested by the calibrator 4. In addition, during the calibration and testing, the vibration section can be used to simulate real working conditions in order to evaluate and verify the performance and reliability of the meter when encountering mechanical vibration in actual use.

[0034] Reference Figures 1-4The calibrator 4 is fixed on the side wall of the upper horizontal plate 21. Both the upper horizontal plate 21 and the lower horizontal plate 22 have terminal blocks 41 fixed on their side walls. A data display screen 42 is fixedly connected to the side wall of the upper horizontal plate 21. The terminal blocks 41 are electrically connected to the calibrator 4 and the data display screen 42. The number of calibrators 4, terminal blocks 41, and data display screens 42 is matched with the number of storage platforms 3, meaning that each storage platform 3 can independently perform the calibration of the electricity meter.

[0035] With the above structure, the terminal 41 is connected to the electricity meter. Then, the calibrator 4 applies different loads (no load, light load, rated load, and overload) to the electricity meter. The data display screen 42 compares the data after the electricity meter flows in with the data initially applied by the calibrator 4 to determine whether the electricity meter is qualified, thus completing the calibration of the electricity meter. Furthermore, each of the three holding platforms can independently perform the calibration of the electricity meter, effectively improving the calibration efficiency.

[0036] Reference Figure 7 , Figure 8 The vibrating part includes an impact plate 6, which is slidably connected to the airflow channel 31. An upper magnetic plate 61 is fixedly connected to the bottom of the impact plate 6. A reset chamber 62 is fixedly connected between the holding platform 3 and the lower horizontal plate 22. The reset chamber 62 is connected to the airflow channel 31. A reset slide plate 621 is slidably connected inside the reset chamber 62. A reset spring 622 is fixedly connected between the reset slide plate 621 and the bottom of the inner cavity of the reset chamber 62. The bottom of the impact plate 6 is fixedly connected to the top of the reset slide plate 621. A drive motor 63 is fixedly connected to the side wall of the lower horizontal plate 22. A linkage shaft 631 is fixedly connected to the output end of the drive motor 63. The other end of the linkage shaft 631 passes through the lower horizontal plate 22 and is fixedly connected to a lower magnetic plate 64. The lower magnetic plate 64 and the upper magnetic plate 61 are magnetically attracted to each other.

[0037] With the above structure, the drive motor 63 is turned on, causing the lower magnetic plate 64 to rotate. Utilizing the attraction between the lower magnetic plate 64 and the upper magnetic plate 61, when they are in the attraction area, the upper magnetic plate 61 is pulled downwards, thereby compressing the reset spring 622 to store energy. Subsequently, when the lower magnetic plate 64 rotates past the attraction area, the upper magnetic plate 61 will quickly reset under the rebound action of the reset spring 622 and impact the top of the inner cavity of the airflow groove 31. This process repeats, causing the entire holding platform 3 to vibrate, thereby simulating the vibration environment of the electricity meter test. This allows for the evaluation and verification of the performance and reliability of the electricity meter when encountering mechanical vibration in actual use, thereby improving the accuracy of the electricity meter calibration results.

[0038] The specific performance and reliability of the electricity meter that need to be evaluated and verified include the following: whether the electricity meter can withstand various vibrations during transportation, installation and long-term operation without physical damage or functional failure; whether the solder joints and connectors between the internal electronic components of the electricity meter are loose and whether they can resist vibration without disconnection; and whether the electricity meter can maintain accurate measurement in a vibration environment.

[0039] In addition, the number of drive motors 63 is the same as that of the holding platform 3, that is, each group of holding platforms 3 can independently perform vibration simulation testing, and partition seams 24 are provided on the upper horizontal plate 21 and lower horizontal plate 22 located between two adjacent groups of holding platforms 3; this can reduce the detection error caused by the mutual influence when vibration occurs at each holding platform 3, so that vibration simulation testing of different meters can be performed simultaneously on multiple groups of holding platforms 3, effectively improving the testing efficiency.

[0040] Reference Figure 8 Among them, the side of the holding platform 3 facing the mounting plate 23 has multiple sets of guide holes 32 at equal intervals, and the guide holes 32 are connected to the inner cavity of the airflow groove 31.

[0041] With the above structure, during the resetting and sliding process of the upper magnetic plate 61, the gas in the airflow groove 31 is compressed, causing the gas to accelerate through the guide hole 32 and blow towards the connection between the meter and the terminal 41. When the upper magnetic plate 61 moves downward, it draws the airflow around the connection into the airflow groove 31. This process repeats, accelerating the heat exchange efficiency of the airflow at the connection, effectively cooling the connection, reducing errors caused by resistance heating, and ensuring the accuracy of the verification data.

[0042] Reference Figure 7 , Figure 8 The inflation section includes an inflation pipe 7, which is fixed between two sets of piston boxes 5. Both ends of the inflation pipe 7 are connected to the inner cavities of the piston boxes 5 on both sides. One side of the reset chamber 62 is fixed and connected to an exhaust pipe 71, and the other end of the exhaust pipe 71 is connected to the inner cavity of the inflation pipe 7. The other side of the reset chamber 62 is fixed and connected to a negative pressure pipe 72. A negative pressure groove 33 is provided in the holding platform 3. The other end of the negative pressure pipe 72 passes through the airflow groove 31 and the impact plate 6 and is connected to the inner cavity of the negative pressure groove 33. An adsorption slot 331 is provided at the top of the negative pressure groove 33, and the adsorption slot 331 is located directly below the area where the meter is placed on the holding platform 3. One-way valves are provided in both the inflation pipe 7 and the negative pressure pipe 72, and the thrust required to open the two sets of one-way valves is in opposite directions.

[0043] It should be noted that the one-way valve in the inflation pipe 7 can only allow the gas in the reset chamber 62 to enter the piston box 5; the one-way valve in the negative pressure pipe 72 can only allow the gas in the negative pressure groove 33 to enter the reset chamber 62.

[0044] With the above structure, when the upper magnetic plate 61 moves downward, it pushes the reset slide plate 621 downward, thereby compressing the gas in the reset chamber 62 and opening the one-way valve in the inflation pipe 7. This allows the gas in the reset chamber 62 to be filled into the piston box 5 along the inflation pipe 7, thereby increasing the air pressure in the piston box 5 and pushing the two sets of clamping plates 51 closer to the side wall of the meter, making the clamping plates 51 fit more tightly with the meter and improving the clamping effect on the meter. When the reset slide plate 621 slides upward to reset, it will push the reset chamber 62 downward. The negative pressure suction force generated inside the negative pressure tank 33 opens the one-way valve inside the negative pressure pipe 72, thereby drawing the gas in the negative pressure tank 33 into the reset chamber 62, thus reducing the air pressure in the negative pressure tank 33. At this time, the meter is exactly covering the top of the adsorption slot 331, so that a negative pressure suction force can be generated at the bottom of the meter, so that it can be more stably fixed on the holding platform 3. As mentioned above, this ensures that the meter will not have excessive displacement during vibration simulation testing, thereby ensuring the stability of each connection point and improving the accuracy of the final test results.

[0045] Reference Figures 1-8 In this invention, during use, the smart meter to be calibrated is inserted into the holding platform 3 along the clamping plates 51 on both sides. During this process, the side wall of the meter is pressed against the clamping plates 51, causing it to slide towards the side of the compression clamping spring 52. Finally, under the rebound action of the clamping spring 52, the meter is clamped and fixed on the holding platform 3, facilitating the removal and placement of the meter and improving the convenience of calibration. Next, the wiring terminal 41 is connected to the meter, and then different loads (no load, light load, rated load, and overload) are applied to the meter by the calibrator 4. The data after the data flows into the meter is compared with the data initially applied by the calibrator 4 on the data display screen 42 to determine whether the meter is qualified, thus completing the meter calibration work.

[0046] After each verification under different loads, the drive motor 63 can be turned on to rotate the lower magnetic plate 64. Utilizing the attraction between the lower magnetic plate 64 and the upper magnetic plate 61, when they are in the attraction area, the upper magnetic plate 61 will be pulled downwards, thereby compressing the reset spring 622 to store energy. Subsequently, when the lower magnetic plate 64 rotates past the attraction area, the upper magnetic plate 61 will quickly reset under the rebound action of the reset spring 622 and impact the top of the inner cavity of the airflow groove 31. This process repeats, causing the entire holding platform 3 to vibrate, thereby simulating the vibration environment of the meter test. This allows for the evaluation and verification of the meter's performance and reliability when encountering mechanical vibration in actual use, thereby improving the accuracy of the meter verification results. Furthermore, during the resetting and sliding process of the upper magnetic plate 61, the gas in the airflow groove 31 is compressed, causing the gas to accelerate through the guide hole 32 and blow towards the connection between the meter and the terminal 41. When the upper magnetic plate 61 moves downward, it draws the airflow around the connection into the airflow groove 31. This process repeats, accelerating the heat exchange efficiency of the airflow at the connection, effectively cooling the connection, reducing errors caused by resistance-induced heat generation, and ensuring the accuracy of the verification data. In this way, data on the meter under different loads under static and dynamic environments can be obtained, allowing for a more comprehensive evaluation of the meter's performance and reliability.

[0047] Additionally, when the upper magnetic plate 61 moves downward, it pushes the reset slide plate 621 downward, thereby compressing the gas in the reset chamber 62 and opening the one-way valve in the inflation pipe 7. This allows the gas in the reset chamber 62 to be injected into the piston box 5 through the inflation pipe 7, increasing the air pressure in the piston box 5 and pushing the two sets of clamping plates 51 closer to the side wall of the meter, making the clamping plates 51 fit more tightly with the meter and improving the clamping effect on the meter. When the reset slide plate 621 slides upward to reset, it generates gas in the reset chamber 62. The negative pressure suction force opens the one-way valve in the negative pressure pipe 72, thereby drawing the gas in the negative pressure tank 33 into the reset chamber 62, thus reducing the air pressure in the negative pressure tank 33. At this time, the meter is exactly covering the top of the adsorption slot 331, so that a negative pressure suction force can be generated at the bottom of the meter, allowing it to be more stably fixed on the holding platform 3. As mentioned above, this ensures that the meter will not have excessive displacement during vibration simulation testing, thereby ensuring the stability of each connection point and improving the accuracy of the final test results.

[0048] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A smart meter calibration device, comprising a testing platform (1) and a calibrator (4), characterized in that, The top of the testing platform (1) is fixedly connected to a testing frame (2), and an upper horizontal plate (21) and a lower horizontal plate (22) are fixedly connected to the testing frame (2). Multiple sets of mounting plates (23) are fixed at equal intervals between the upper horizontal plate (21) and the lower horizontal plate (22), and the platform also includes: A holding platform (3) is fixed on a mounting plate (23), and the number of holding platforms (3) and mounting plates (23) are the same. The container (3) is provided with an airflow groove (31), and the airflow groove (31) is provided with a vibration part that applies vibration to the container (3) to simulate real working conditions. Piston boxes (5) are fixed to the side wall of the holding platform (3), and two sets of piston boxes (5) are equally spaced at each set of the holding platform (3). The piston box (5) is slidably connected to a clamping plate (51), and a clamping spring (52) is fixedly connected between the side wall of the clamping plate (51) and the inner wall of the piston box (5). The holding platform (3) is provided with an inflation part for inflating the piston box (5) to improve the clamping effect.

2. The smart meter verification device according to claim 1, characterized in that, The calibrator (4) is fixed on the side wall of the upper horizontal plate (21). Terminals (41) are fixed on both the side walls of the upper horizontal plate (21) and the lower horizontal plate (22). A data display screen (42) is fixedly connected to the side wall of the upper horizontal plate (21). The terminals (41) are electrically connected to the calibrator (4) and the data display screen (42). The number of the calibrator (4), terminal block (41), and data display screen (42) is matched with the number of the holding platform (3), that is, each holding platform (3) can independently perform the calibration of the electricity meter.

3. The smart meter verification device according to claim 1, characterized in that, The vibrating part includes an impact plate (6), which is slidably connected in the airflow groove (31). An upper magnetic plate (61) is fixedly connected to the bottom of the impact plate (6). A reset chamber (62) is fixedly connected between the holding platform (3) and the lower horizontal plate (22). The reset chamber (62) is connected to the airflow groove (31). A reset slide plate (621) is slidably connected inside the reset chamber (62). A reset spring (622) is fixedly connected between the reset slide plate (621) and the bottom of the inner cavity of the reset chamber (62). The bottom of the impact plate (6) is fixedly connected to the top of the reset slide plate (621).

4. The smart meter verification device according to claim 3, characterized in that, A drive motor (63) is fixedly connected to the side wall of the lower horizontal plate (22). The output end of the drive motor (63) is fixedly connected to a linkage shaft (631). The other end of the linkage shaft (631) passes through the lower horizontal plate (22) and is fixedly connected to a lower magnetic plate (64). The lower magnetic plate (64) and the upper magnetic plate (61) are magnetically attracted to each other.

5. The smart meter verification device according to claim 3, characterized in that, The holding platform (3) has multiple sets of guide holes (32) at equal intervals on the side facing the mounting plate (23), and the guide holes (32) are connected to the inner cavity of the airflow groove (31).

6. The smart meter verification device according to claim 3, characterized in that, The inflation part includes an inflation tube (7), which is fixed between the two sets of piston boxes (5). Both ends of the inflation tube (7) are connected to the inner cavities of the two piston boxes (5) respectively. One side of the reset chamber (62) is fixed and connected to an exhaust pipe (71), and the other end of the exhaust pipe (71) is connected to the inner cavity of the inflation tube (7).

7. A smart meter verification device according to claim 6, characterized in that, The other side of the reset chamber (62) is fixed and connected to a negative pressure pipe (72). A negative pressure groove (33) is provided in the holding platform (3). The other end of the negative pressure pipe (72) passes through the airflow groove (31) and the impact plate (6) and is connected to the inner cavity of the negative pressure groove (33). An adsorption slot (331) is provided at the top of the negative pressure groove (33), and the adsorption slot (331) is located directly below the area where the meter is placed on the holding platform (3).

8. A smart meter verification device according to claim 7, characterized in that, Both the inflation tube (7) and the negative pressure tube (72) are equipped with one-way valves, and the thrust required to open the two sets of one-way valves is in opposite directions.

9. A smart meter verification device according to claim 1, characterized in that, The end inlet side of the clamping plate (51) is inclined, and the inclined surfaces of the clamping plates (51) on both sides of the same set of serving platforms (3) are arranged in a figure-eight shape.

10. A smart meter verification device according to claim 4, characterized in that, The number of drive motors (63) is the same as that of the holding platform (3), that is, each group of holding platforms (3) can be independently subjected to vibration simulation detection, and partition seams (24) are provided on the upper horizontal plate (21) and lower horizontal plate (22) located between two adjacent groups of holding platforms (3).

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