Single-phase electric energy meter testing device for electric energy meter testing pipeline

Abstract

The application provides a single-phase electric energy meter calibration device for an electric energy meter calibration pipeline, which comprises a base, a mounting table, a receiving and fixing assembly, a sliding seat and a driving assembly. The mounting table is fixedly arranged on the base, the mounting table is provided with a sliding cavity, and the length direction of the sliding cavity is a first direction. The receiving and fixing assembly is fixedly arranged on the base and located on one side of the mounting table along the first direction, the receiving and fixing assembly is connected with a transmission mechanism of the electric energy meter calibration pipeline, can receive an electric energy meter to be calibrated and fix the single-phase electric energy meter. The sliding seat is slidingly arranged in the sliding cavity, and a plurality of probe structures are arranged on the sliding seat. The driving assembly is arranged on the mounting table and abuts against the sliding seat, can drive the sliding seat to reciprocatingly move in the sliding cavity, and control the movement stroke of the sliding seat. The single-phase electric energy meter calibration device for the electric energy meter calibration pipeline can effectively protect the probe structures, improve the calibration efficiency, ensure the abutting precision of the probe structures and has high practicability.

Description

Technical Field

[0001] This invention belongs to the field of electricity meter calibration technology, and specifically relates to a single-phase electricity meter calibration device for an electricity meter calibration production line. Background Technology

[0002] Single-phase energy meters are used for active power measurement. They are accurate, modular, and compact, allowing for easy installation in various terminal distribution boxes. Single-phase energy meters are mandatory verification instruments; they must pass verification before installation. For large-scale verification of single-phase energy meters, a production line is typically used. As the meters are transferred along the line (transfer mechanism), they sequentially enter the single-phase energy meter verification device, where the metering data is collected.

[0003] In existing technologies, single-phase energy meter calibration devices typically employ multiple probes. Each probe contacts the current, voltage, and auxiliary communication terminals of the single-phase energy meter under calibration to collect metering data. However, in general single-phase energy meter calibration devices, each probe is driven by a slide, which is usually driven by a telescopic structure (typically a cylinder). This structure cannot guarantee the accuracy of probe stroke control; each probe makes rigid contact with the current, voltage, and auxiliary communication terminals, frequently causing bending and, in severe cases, damage, resulting in poor practicality. Furthermore, due to the telescopic structure, the slide's travel distance is large, leading to poor stroke control. For energy meter calibration production lines, the slide's movement takes a relatively long time, reducing calibration efficiency and further compromising practicality. In addition, the single-phase energy meter calibration device has a poor fixing effect on the single-phase energy meters to be calibrated. The poor positional accuracy of the single-phase energy meters often leads to the failure of the calibration work, which requires manual calibration, which is time-consuming and laborious, and has poor practicality. Summary of the Invention

[0004] This invention provides a single-phase energy meter calibration device for an energy meter calibration production line, which aims to solve the problem of poor practicality of existing single-phase energy meter calibration devices located on the energy meter calibration production line due to poor control of probe stroke and stroke accuracy, as well as poor fixing effect.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A single-phase energy meter calibration device for an energy meter calibration production line is provided, comprising a base, a mounting platform, a receiving and fixing component, a slide block, and a driving component; the mounting platform is fixed on the base, and a sliding cavity is provided on the mounting platform, with the length direction of the sliding cavity set as a first direction; the receiving and fixing component is fixed on the base and located on one side of the mounting platform along the first direction, and the receiving and fixing component is connected to the transmission mechanism of the energy meter calibration production line for receiving the energy meter to be calibrated and fixing the single-phase energy meter; the slide block is slidably disposed in the sliding cavity, and multiple probe structures are mounted on the slide block; the driving component is disposed on the mounting platform and abuts against the slide block, for driving the slide block to reciprocate within the sliding cavity and controlling and adjusting the travel stroke of the slide block.

[0006] In one possible implementation, the drive assembly includes a sliding frame, an adjusting screw, a cam structure, a spring-loaded structure, and a driver; the sliding frame is slidably disposed in the sliding cavity along the first direction, and has an installation space; the adjusting screw is disposed along the first direction, one end of the adjusting screw is rotatably connected to the sliding frame, and the adjusting screw is threadedly connected to the mounting platform for adjusting the position of the sliding frame in the sliding cavity; the cam structure is disposed in the installation space and rotatably connected to the sliding frame, the cam structure contacts the slide block, and the cam structure is used to control the sliding stroke of the slide block; the spring-loaded structure is disposed in the mounting platform and contacts the slide block, for continuously springing the slide block along the first direction so that the slide block continuously maintains contact with the cam structure; the driver is fixed on the sliding frame, and the power output end of the driver is poweredly connected to the cam structure to drive the cam structure to rotate.

[0007] In one possible implementation, the mounting platform is provided with a vertical plate portion located at the end of the sliding cavity away from the receiving and fixing component, and the vertical plate portion is provided with a first threaded hole for the adjusting screw to be threadedly connected.

[0008] In one possible implementation, the cam structure includes a roller, a slider, a fixing screw, and an adjusting column; the roller is disposed in the mounting space, its axis is vertically oriented, its outer circumferential surface contacts the slide block, and it has an elongated sliding opening that extends vertically through the roller; the slider is slidably disposed in the elongated sliding opening, and it has a rotating shaft rotatably connected to the sliding frame, the rotating shaft being connected to the power output end of the driver; the fixing screw extends along the length of the elongated sliding opening. The device is configured such that one end of the fixing screw is fixedly connected to the slider; the adjusting post is arranged along the length of the elongated sliding opening and is rotatably connected to the roller; one end of the adjusting post near the slider is provided with a second threaded hole for the fixing screw to be inserted and threadedly connected to the fixing screw; the other end of the adjusting post is located in the roller and is provided with a hexagonal groove for a wrench to turn; the adjusting post is used to rotate and pull the fixing screw and the slider to move, so as to adjust the distance between the axis of the rotating shaft and the axis of the roller.

[0009] The elongated slide has a guide groove on its side wall for limiting the sliding of the slider, and the roller has a limiting rotating hole that communicates with the elongated slide and is used to house the adjusting column.

[0010] In one possible implementation, a limiting ring is fixed on the outer circumferential surface of the adjusting column, and an annular limiting groove adapted to the limiting ring is provided on the side wall of the corresponding limiting rotating hole.

[0011] In one possible implementation, the horizontal direction perpendicular to the first direction is defined as the second direction; the elastic structure includes at least two springs, each spring being disposed in the mounting platform along the first direction, and the springs being spaced apart along the second direction; one end of each spring abuts against an abutment plate disposed on the slide, and the other end abuts against the mounting platform;

[0012] The mounting platform is provided with multiple receiving cavities for accommodating the springs, each receiving cavity is connected to the sliding cavity, and the other end of each spring abuts against the side wall of the receiving cavity; the abutment plate is located in the receiving cavity.

[0013] In one possible implementation, the receiving and fixing assembly includes an auxiliary platform, compensation blocks, and a fixing structure; the auxiliary platform is fixed on the base, and the auxiliary platform is provided with a slide groove arranged along the first direction, one end of the slide groove communicating with the slide cavity, and the other end of the slide groove being connected to the transmission mechanism of the electricity meter calibration production line; the auxiliary platform is also provided with a placement slot, which is arranged along the first direction, located below the slide groove, and communicating with the slide groove; two compensation blocks are provided, and both compensation blocks are arranged along the first direction in the slide groove. In the middle, the two compensation blocks correspond one-to-one with the two side walls of the slide groove, and each compensation block is detachably connected to one side wall of the corresponding slide groove. A fixed channel corresponding to the width of the base of the unidirectional energy meter to be tested is formed between the two compensation blocks. Each compensation block is provided with a limiting rod at one end near the slide cavity. The fixing structure is located in the placement groove and is used to drive the unidirectional energy meter to be tested to move towards the slide cavity along the first direction after the energy meter to be tested slides into the fixed channel, and clamp and fix the unidirectional energy meter to be tested together with the two limiting rods in the first direction.

[0014] In one possible implementation, the fixed structure includes a telescopic structure, a movable block, a flipping plate, and a torsion spring; the telescopic structure is disposed in the placement groove along the first direction, and has a fixed end and a telescopic end. The fixed end of the telescopic structure is fixedly connected to the auxiliary platform, and the telescopic end of the telescopic structure extends away from the slide block; the movable block is slidably disposed in the placement groove and connected to the telescopic end of the telescopic structure, and the movable block is provided with a hinge seat; one end of the flipping plate is hinged to the hinge seat, and the flipping plate is used to pitch and rotate to a certain position after the telescopic end of the telescopic structure has extended to its limit position. The device is set in a horizontal position, or after the telescopic end of the telescopic structure retracts, it is tilted and rotated to a vertical position. When the flip plate is set in a vertical position, the other end of the flip plate is located in the slide groove, pushing the unidirectional energy meter to be tested, and together with the two limit rods, clamping and fixing the unidirectional energy meter to be tested. The torsion spring is sleeved on the hinge shaft between the flip plate and the hinge seat. The torsion spring has two abutting ends. One abutting end of the torsion spring abuts against the moving block, and the other abutting end of the torsion spring abuts against the flip plate, so as to spring the flip plate and make the flip plate tend to flip to maintain a vertical position.

[0015] Wherein, a limiting plate is provided at the end of the placement groove away from the sliding cavity. The top of the limiting plate is flush with the bottom surface of the sliding groove. The limiting plate is used to abut against the flip plate after the telescopic end of the telescopic structure is extended, so that the flip plate can be tilted and rotated to a horizontal state.

[0016] In one possible implementation, a pressure sensor is provided on the surface of the flip plate and the unidirectional energy meter to be tested. The pressure sensor is used to monitor the clamping force between the flip plate and the limiting rod on the unidirectional energy meter to be tested.

[0017] In one possible implementation, each probe structure includes an abutment pin and an elastic element; the abutment pin is slidably disposed in the slide along the first direction, and the other end of the abutment pin extends out of the slide and abuts against the corresponding current and voltage terminal or auxiliary communication terminal on the unidirectional energy meter to be tested; the elastic element is located in the slide and disposed along the first direction, and the elastic element abuts against the abutment pin to buffer the impact force received by the abutment pin;

[0018] The slide block is provided with a sliding hole for the sliding connection of the abutment pin and for the placement of the elastic element.

[0019] In this implementation / application embodiment, the probe structures mounted on the slide can contact the current and voltage terminals and auxiliary communication terminals on the unidirectional energy meter to be tested, thereby ensuring the collection of metering data from the unidirectional energy meter. The driving component drives the slide to slide, ensuring control over the slide's travel distance. This effectively prevents rigid contact between the probe structures and the current and voltage terminals and auxiliary communication terminals on the unidirectional energy meter to be tested, effectively protecting the probe structures. Simultaneously, the driving component allows for adjustment of the slide's travel distance, resulting in a smaller travel distance and higher movement accuracy, effectively saving time during the sliding process and thus improving testing efficiency to a certain extent. Furthermore, the receiving and fixing component effectively fixes the position of the unidirectional energy meter to be tested, ensuring precise correspondence between the probe structures and the current and voltage terminals and auxiliary communication terminals on the unidirectional energy meter to be tested, guaranteeing the testing effect. The single-phase energy meter calibration device for the energy meter calibration production line provided in this embodiment can control and adjust the stroke of the probe structure, effectively protect the probe structure, shorten the movement time of the probe structure, improve the calibration efficiency, and ensure the accuracy of the contact between the probe structure and the current and voltage terminals and auxiliary communication terminals on the single-phase energy meter to be calibrated. It is highly practical. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a single-phase energy meter calibration device for an energy meter calibration production line provided in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram showing the connection positions of the drive assembly, slide block, and probe structure in the single-phase energy meter calibration device for the energy meter calibration production line provided in this embodiment of the invention.

[0022] Figure 3 This is a schematic diagram of the cam structure in the single-phase energy meter calibration device for the energy meter calibration production line provided in this embodiment of the invention;

[0023] Figure 4 for Figure 3 A cross-sectional schematic diagram of the cam structure in the single-phase energy meter calibration device used in the energy meter calibration production line shown;

[0024] Figure 5 This is a cross-sectional view of the spring structure of the single-phase energy meter calibration device for an energy meter calibration production line provided in an embodiment of the present invention.

[0025] Figure 6 This is a cross-sectional structural diagram of the receiving and fixing component of the single-phase energy meter calibration device for the energy meter calibration production line provided in an embodiment of the present invention;

[0026] Figure 7 This is a cross-sectional view of the probe structure in the single-phase energy meter calibration device for the energy meter calibration production line provided in this embodiment of the invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 10. Base; 20. Mounting platform; 21. Slide cavity; 22. Vertical plate; 23. Receiving cavity; 30. Receiving and fixing assembly; 31. Auxiliary platform; 311. Placement slot; 312. Limiting plate; 32. Compensating block; 33. Fixing structure; 331. Telescopic structure; 332. Moving block; 333. Flipping plate; 34. Limiting rod; 35. Fixing channel; 36. Compensating block; 40. Slide seat; 41. Abutment plate; 50. Drive assembly; 51. Sliding frame; 52. Adjusting screw; 53. Cam structure; 531. Roller; 532. Slider; 533. Fixing screw; 534. Adjusting column; 535. Long strip slide; 536. Limiting ring; 557. Rotating shaft; 54. Spring structure; 541. Spring; 55. Driver; 60. Probe structure; 61. Abutment pin; 62. Elastic element. Detailed Implementation

[0029] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0030] Please refer to the following: Figure 1 and Figure 2The present invention will now describe the single-phase energy meter calibration device for an energy meter calibration production line. The single-phase energy meter calibration device for an energy meter calibration production line includes a base 10, a mounting platform 20, a receiving and fixing component 30, a slide block 40, and a drive component 50. The mounting platform 20 is fixed on the base 10 and has a sliding cavity 21, with the length direction of the sliding cavity 21 defined as a first direction. The receiving and fixing component 30 is fixed on the base 10 and located on one side of the mounting platform 20 along the first direction. The receiving and fixing component 30 is connected to the transmission mechanism of the energy meter calibration production line and can receive the energy meter to be calibrated and fix the single-phase energy meter. The slide block 40 is slidably disposed in the sliding cavity 21, and multiple probe structures 60 are mounted on the slide block 40. The drive assembly 50 is mounted on the mounting platform 20 and abuts against the slide 40, which can drive the slide 40 to reciprocate in the slide cavity 21 and control and adjust the travel of the slide 40.

[0031] The single-phase energy meter calibration device for the energy meter calibration production line provided in this embodiment, compared with the prior art, allows the probe structures 60 on the slide 40 to contact the current and voltage terminals and auxiliary communication terminals on the single-phase energy meter to be calibrated, thereby ensuring the collection of metering data from the single-phase energy meter. The drive component 50 drives the slide 40 to slide, ensuring control over the sliding stroke of the slide 40. This effectively prevents rigid contact between the probe structures 60 and the current and voltage terminals and auxiliary communication terminals on the single-phase energy meter to be calibrated, effectively protecting the probe structures 60. At the same time, the drive component 50 can adjust the stroke of the slide 40, giving it a smaller stroke and higher movement accuracy, effectively saving the time required for the sliding process of the slide 40, and thus improving the efficiency of the calibration work to a certain extent. Furthermore, the receiving and fixing component 30 effectively fixes the position of the single-phase energy meter to be tested, thereby ensuring the precise correspondence between each probe structure 60 and the current and voltage terminals and auxiliary communication terminals on the single-phase energy meter to be tested, thus guaranteeing the testing effect. The single-phase energy meter testing device for the energy meter testing line provided in this embodiment can control and adjust the stroke of the probe structure 60, effectively protecting the probe structure 60, shortening the movement time of the probe structure 60, improving the testing efficiency, and ensuring the accuracy of the contact between the probe structure 60 and the current and voltage terminals and auxiliary communication terminals on the single-phase energy meter to be tested, making it highly practical.

[0032] In some embodiments, the driving component 50 described above may employ, for example... Figures 1 to 4 The structure shown. See also Figures 1 to 4The drive assembly 50 includes a sliding frame 51, an adjusting screw 52, ​​a cam structure 53, a spring-loaded structure 54, and a driver 55. The sliding frame 51 is slidably disposed in the sliding cavity 21 along a first direction and has an installation space. The adjusting screw 52 is disposed along the first direction, one end of which is rotatably connected to the sliding frame 51. The adjusting screw 52 is threadedly connected to the mounting platform 20, enabling adjustment of the position of the sliding frame 51 within the sliding cavity 21. The cam structure 53 is disposed in the installation space and rotatably connected to the sliding frame 51. The cam structure 53 contacts the slide block 40 and controls the sliding stroke of the slide block 40. The spring-loaded structure 54 is disposed in the mounting platform 20 and contacts the slide block 40, continuously springing the slide block 40 along the first direction to maintain continuous contact between the slide block 40 and the cam structure 53. The driver 55 is fixed to the sliding frame 51, and its power output end is poweredly connected to the cam structure 53 to drive the cam structure 53 to rotate.

[0033] The adjusting screw 52 drives the sliding frame 51 to move, which can adjust the initial position of the slide 40, thus achieving coarse adjustment of the slide 40 position. This process is done manually to ensure that the initial distance between the probe structure 60 and the current and voltage terminals and auxiliary communication terminals on the unidirectional energy meter to be tested is controllable. Because different types of unidirectional energy meters have different extension lengths of their current and voltage terminals and auxiliary communication terminals, this structure can adapt to different types of unidirectional energy meters. The cam structure 53 makes rolling contact with the slide 40, and the cam structure 53 can drive the slide 40 to move a small distance in the first direction, thus finely adjusting the position of the slide 40. This allows the probe structure 60 to move a small stroke to contact the current and voltage terminals and auxiliary communication terminals on the unidirectional energy meter to be tested, effectively preventing excessive force on the probe structure 60 and thus protecting the probe structure 60. The spring-loaded structure 54 can spring the slide block 40 towards the adjusting screw 52 along the first direction to ensure that the slide block 40 can continuously maintain contact with the cam structure 53. Simultaneously, it ensures that after the single-phase energy meter under test is calibrated, the probe structure 60 disengages from the current and voltage terminals and auxiliary communication terminals on the single-phase energy meter, allowing the slide block 40 to return to its initial position. This structure effectively controls and adjusts the movement stroke of the slide block 40 and the probe structure 60, improving calibration efficiency and demonstrating strong practicality.

[0034] It should be noted that the driver 55 can be either a servo motor or a stepper motor.

[0035] In some embodiments, the mounting platform 20 described above can be as follows: Figure 1 The structure shown. See also Figure 1The mounting platform 20 is provided with a vertical plate 22, which is located at the end of the slide cavity 21 away from the receiving and fixing component 30. The vertical plate 22 is provided with a first threaded hole for threaded connection of the adjusting screw 52. The vertical plate 22 ensures the connection of the adjusting screw 52, ​​thereby ensuring the adjustment of the initial position of the slide 40.

[0036] In some embodiments, the cam structure 53 described above can be as follows: Figures 1 to 4 The structure shown. See also Figures 1 to 4 The cam structure 53 includes a roller 531, a slider 532, a fixing screw 533, and an adjusting column 534. The roller 531 is disposed in the installation space, with its axis aligned vertically. The outer circumference of the roller 531 contacts the slide block 40. The roller 531 has an elongated sliding opening 535 that extends vertically through it. The slider 532 is slidably disposed within the elongated sliding opening 535. The slider 532 has a rotating shaft 557 that is rotatably connected to the sliding frame 51. The rotating shaft 557 is connected to the power output end of the driver 55. The fixing screw 533 is positioned along the length of the elongated sliding opening 535, and one end of the fixing screw 533 is fixedly connected to the slider 532. The adjusting column 534 is arranged along the length of the long strip slide 535 and is rotatably connected to the roller 531. One end of the adjusting column 534 near the slider 532 is provided with a second threaded hole for the fixing screw 533 to be inserted and threadedly connected to the fixing screw 533. The other end of the adjusting column 534 is located in the roller 531, and the other end of the adjusting column 534 is provided with a hexagonal groove that can be turned by a wrench. The adjusting column 534 can rotate and pull the fixing screw 533 and the slider 532 to move, so as to adjust the distance between the axis of the rotating shaft 557 and the axis of the roller 531.

[0037] The long slide 535 has a guide groove on its side wall for the slider 532 to slide in a limited position, and the roller 531 has a limiting rotating hole that communicates with the long slide 535 and is used to place the adjusting column 534.

[0038] The rotation of the adjusting column 534 moves the slider 532 via the fixing screw 533, thereby adjusting the axial distance between the rotating shaft 557 and the roller 531. This structure ensures that the travel of the slide block 40 and the probe structure 60 can be readjusted, effectively preventing excessive stress on the probe structure 60 and the current and voltage terminals and auxiliary communication terminals on the single-phase energy meter under test during the contact process. Furthermore, this structure is easier to control and has higher adjustment accuracy, making it suitable for the contact process of the probe structure 60 and highly practical.

[0039] In this embodiment, during the verification of the unidirectional energy meter, the slide 40 is driven by the roller 531. Since the outer circumferential surface of the roller 531 is curved, the movement of the slide 40 is not linear. When the slide 40 drives the probe structure 60 to approach the current and voltage terminals and auxiliary communication terminals on the unidirectional energy meter, its speed gradually decreases, which can further ensure the protection of the probe structure 60.

[0040] It should be noted that the other end of the adjusting column 534 must be located inside the roller 531. The roller 531 has a curved surface that contacts the slide block 40, and the limiting rotating hole can penetrate the curved surface.

[0041] In some embodiments, the aforementioned adjusting column 534 may be adopted as follows: Figure 4 The structure shown. See also Figure 4 A limiting ring 536 is fixedly provided on the outer circumferential surface of the adjusting column 534, and an annular limiting groove adapted to the limiting ring 536 is provided on the side wall of the corresponding limiting rotating hole. The setting of the limiting ring 536 and the annular limiting groove can prevent the adjusting column 534 from disengaging from the roller 531 and ensure that the adjusting column 534 is limited.

[0042] In some embodiments, the elastic structure 54 described above can be as follows: Figure 5 The structure shown. See also Figure 5 The horizontal direction perpendicular to the first direction is defined as the second direction. The spring-loaded structure 54 includes at least two springs 541, each spring 541 is disposed in the mounting platform 20 along the first direction, and the springs 541 are spaced apart along the second direction. One end of each spring 541 abuts against an abutment plate 41 disposed on the slide 40, and the other end abuts against the mounting platform 20. The mounting platform 20 is provided with a plurality of receiving cavities 23 for accommodating the springs 541, each receiving cavity 23 communicating with the slide cavity 21, and the other end of each spring 541 abuts against the side wall of the receiving cavity 23. The abutment plate 41 is located in the receiving cavity 23, preferably located below the slide 40.

[0043] The spring 541 mainly ensures the springing of the slide 40 so that the slide 40 can continuously abut against the outer peripheral surface of the roller 531.

[0044] In some embodiments, the aforementioned receiving and fixing component 30 may employ, for example... Figure 1 The structure shown. See also Figure 1The receiving and fixing assembly 30 includes an auxiliary platform 31, compensation blocks 32, and a fixing structure 33. The auxiliary platform 31 is fixed on the base 10 and has a slide groove arranged along a first direction. One end of the slide groove is connected to the slide cavity 21, and the other end of the slide groove is connected to the transmission mechanism of the electricity meter calibration line. The auxiliary platform 31 also has a placement groove 311, which is arranged along the first direction, located below the slide groove, and connected to the slide groove. There are two compensation blocks 32, both of which are arranged in the slide groove along the first direction. The two compensation blocks 32 correspond one-to-one with the two side walls of the slide groove. Each compensation block 32 is detachably connected to one side wall of the corresponding slide groove. The two compensation blocks 32 form a fixed channel 35 corresponding to the width of the base of the unidirectional electricity meter under test. Each compensation block 32 has a limiting rod 34 at the end near the slide cavity 21. The fixing structure 33 is located in the placement groove 311. After the energy meter to be tested slides into the fixing channel 35, it can drive the unidirectional energy meter to be tested to move towards the sliding cavity 21 along the first direction, and together with the two limiting rods 34, clamp and fix the unidirectional energy meter to be tested in the first direction.

[0045] In some embodiments, the fixing structure 33 described above can be as follows: Figure 6 The structure shown. See also Figure 6 The fixed structure 33 includes a telescopic structure 331, a movable block 332, a flipping plate 333, and a torsion spring. The telescopic structure 331 is disposed in the placement groove 311 along a first direction. The telescopic structure 331 has a fixed end and a telescopic end. The fixed end of the telescopic structure 331 is fixedly connected to the auxiliary platform 31, and the telescopic end of the telescopic structure 331 extends away from the slide block 40. The movable block 332 is slidably disposed in the placement groove 311 and connected to the telescopic end of the telescopic structure 331. The movable block 332 is provided with a hinge seat. One end of the flipping plate 333 is hinged to the hinge seat. The flipping plate 333 can tilt and rotate to a horizontal position after the telescopic end of the telescopic structure 331 extends to its limit position, or tilt and rotate to a vertical position after the telescopic end of the telescopic structure 331 retracts. When the flip plate 333 is set in a vertical position, the other end of the flip plate 333 is located in the slide groove, pushing the unidirectional energy meter to be tested, and together with the two limit rods 34, clamping and fixing the unidirectional energy meter to be tested. A torsion spring is sleeved on the hinge shaft between the flip plate 333 and the hinge seat. The torsion spring has two abutting ends. One abutting end of the torsion spring abuts against the moving block 332, and the other abutting end of the torsion spring abuts against the flip plate 333, so as to spring the flip plate 333, so that the flip plate 333 has a tendency to flip and maintain a vertical position.

[0046] The placement groove 311 is provided with a limiting plate 312 at the end away from the sliding cavity 21. The top of the limiting plate 312 is flush with the bottom surface of the sliding groove. The limiting plate 312 can abut against the flip plate 333 after the telescopic end of the telescopic structure 331 is extended, so that the flip plate 333 can tilt and rotate to a horizontal state.

[0047] When the telescopic structure 331 extends, it drives the moving block 332 to move. Under the action of the limiting plate 312, the flip plate 333 will tilt and rotate to a horizontal position, that is, it will be fastened to the moving seat. At this time, it can prevent it from occupying the space of the slide groove and prevent interference with the single-phase energy meter entering the slide groove. When the single-phase energy meter enters the slide groove, the telescopic structure 331 retracts, and the moving block 332 drives the flip plate 333. After the flip plate 333 is out of contact with the limiting plate 312, it will tilt and rotate to a vertical position under the action of the torsion spring. At this time, the other end of the flip plate 333 is located in the slide groove and abuts against the single-phase energy meter. As the telescopic structure 331 continues to retract, the flip plate 333 pushes the single-phase energy meter and finally clamps the single-phase energy meter together with the limiting rod 34.

[0048] The auxiliary platform 31 ensures connection with the transmission mechanism. The compensation block 32 adjusts the width of the fixed channel 35 to accommodate different types of single-phase energy meters. Preferably, the compensation block 32 is bolted to the sidewall of the slide. Preferably, each limiting rod 34 is perpendicular to the length direction of the slide and located above the compensation block 32 to prevent interference with the probe structure 60. Preferably, the limiting rod 34 is bolted to the compensation block 32.

[0049] Additionally, it should be noted that the flip plate 333 can be a rectangular plate, and the moving block 332 can have a horizontal surface. The hinge portion on the flip plate 333, which is rotatably connected to the hinge seat, can be located on the plate surface facing the slide block 40 when the flip plate 333 is in a vertical position. (See [reference]). Figure 6 This structure ensures that when the tilting plate 333 is tilted to a vertical position, the side of the tilting plate 333 can be limited by the moving block 332, thus ensuring the tilting angle.

[0050] In some embodiments, the aforementioned flip plate 333 may be adopted as follows: Figure 6 The structure shown. See also Figure 6 Pressure sensors are provided on the flip plate 333 and the plate surface of the unidirectional energy meter to be tested. The pressure sensors can monitor the clamping force of the flip plate 333 and the limit rod 34 on the unidirectional energy meter to be tested. The pressure sensors can be electrically connected to the main controller. The pressure sensors can mainly monitor the clamping force of the flip plate 333 and the limit rod 34 on the unidirectional energy meter to be tested, so as to prevent the two from damaging the unidirectional energy meter to be tested.

[0051] In some embodiments, the probe structure 60 described above can be as follows: Figure 7 The structure shown. See also Figure 7 Each probe structure 60 includes an abutment pin 61 and an elastic element 62. The abutment pin 61 is slidably disposed in the slide 40 along a first direction, and the other end of the abutment pin 61 extends out of the slide 40 and abuts against the corresponding current and voltage terminals or auxiliary communication terminals on the unidirectional energy meter to be tested. The elastic element 62 is located in the slide 40 and is disposed along the first direction. The elastic element 62 abuts against the abutment pin 61 and can buffer the impact force received by the abutment pin 61.

[0052] The slide block 40 is provided with a sliding hole for sliding connection of the abutment pin 61 and for placement of the elastic element 62.

[0053] The elastic element 62 springs the abutment pin 61, which can buffer the impact force on the abutment pin 61. Furthermore, it can buffer the abutment pin 61 after it has been subjected to a large abutting force, preventing deformation or damage to the abutment pin 61, thus demonstrating strong practicality. Preferably, the elastic element 62 can be a spring.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A single-phase energy meter calibration device for an automated energy meter calibration line, characterized in that, The device includes a base, a mounting platform, a receiving and fixing component, a slide, and a driving component. The mounting platform is fixed on the base and has a sliding cavity, with the length direction of the sliding cavity defined as a first direction. The receiving and fixing component is fixed on the base and located on one side of the mounting platform along the first direction. The receiving and fixing component is connected to the transfer mechanism of the electricity meter calibration production line and is used to receive the electricity meter to be calibrated and fix the single-phase electricity meter. The slide is slidably disposed in the sliding cavity and has multiple probe structures mounted on it. The driving component is disposed on the mounting platform and abuts against the slide, used to drive the slide to reciprocate within the sliding cavity and control and adjust the travel of the slide. The drive assembly includes a sliding frame, an adjusting screw, a cam structure, a spring-like structure, and a driver. The sliding frame is slidably disposed in the sliding cavity along the first direction and has an installation space. The adjusting screw is disposed along the first direction, one end of which is rotatably connected to the sliding frame and threadedly connected to the mounting platform, for adjusting the position of the sliding frame in the sliding cavity. The cam structure is disposed in the installation space and rotatably connected to the sliding frame, and contacts the slide block, for controlling the sliding stroke of the slide block. The spring-like structure is disposed in the mounting platform and contacts the slide block, for continuously springing the slide block along the first direction so that the slide block remains in continuous contact with the cam structure. The driver is fixed on the sliding frame, and the power output end of the driver is poweredly connected to the cam structure to drive the cam structure to rotate. The receiving and fixing assembly includes an auxiliary platform, compensation blocks, and a fixing structure. The auxiliary platform is fixed on the base and has a sliding groove arranged along the first direction. One end of the sliding groove communicates with the sliding cavity, and the other end of the sliding groove is connected to the transmission mechanism of the electricity meter calibration line. The auxiliary platform also has a placement groove arranged along the first direction, located below the sliding groove, and communicating with the sliding groove. Two compensation blocks are provided, both of which are arranged along the first direction in the sliding groove. Each compensation block corresponds to one of the two side walls of the slide groove, and each compensation block is detachably connected to one side wall of the corresponding slide groove. A fixed channel corresponding to the width of the base of the single-phase energy meter under test is formed between the two compensation blocks. Each compensation block is provided with a limiting rod at one end near the slide cavity. The fixing structure is located in the placement groove and is used to drive the single-phase energy meter under test to move towards the slide cavity along the first direction after the energy meter under test slides into the fixed channel, and clamp and fix the single-phase energy meter under test together with the two limiting rods in the first direction.

2. The single-phase energy meter calibration device for a calibration production line as described in claim 1, characterized in that, The mounting platform is provided with a vertical plate, which is located at the end of the sliding cavity away from the receiving and fixing component. The vertical plate is provided with a first threaded hole for the adjusting screw to be threadedly connected.

3. The single-phase energy meter calibration device for an automated energy meter calibration line as described in claim 1, characterized in that, The cam structure includes a roller, a slider, a fixing screw, and an adjusting column. The roller is disposed in the mounting space, with its axis arranged vertically. The outer circumference of the roller contacts the slide block. The roller has an elongated sliding opening that extends vertically through the roller. The slider is slidably disposed in the elongated sliding opening and has a rotating shaft rotatably connected to the sliding frame. The rotating shaft is connected to the power output end of the driver. The fixing screw is arranged along the length of the elongated sliding opening, with one end fixedly connected to the slider. The adjusting column is arranged along the length of the elongated sliding opening and rotatably connected to the roller. One end of the adjusting column near the slider has a second threaded hole for the fixing screw to be inserted and threadedly connected to the fixing screw. The other end of the adjusting column is located in the roller and has a hexagonal groove for a wrench to turn. The adjusting column is used to rotate and move the fixing screw and the slider to adjust the distance between the axis of the rotating shaft and the axis of the roller. The elongated slide has a guide groove on its side wall for limiting the sliding of the slider, and the roller has a limiting rotating hole that communicates with the elongated slide and is used to house the adjusting column.

4. The single-phase energy meter calibration device for a calibration production line as described in claim 3, characterized in that, A limiting ring is fixed on the outer circumferential surface of the adjusting column, and an annular limiting groove adapted to the limiting ring is provided on the side wall of the corresponding limiting rotating hole.

5. The single-phase energy meter calibration device for an automated energy meter calibration line as described in claim 3, characterized in that, The horizontal direction perpendicular to the first direction is defined as the second direction; the elastic structure includes at least two springs, each spring is arranged in the mounting platform along the first direction, and each spring is spaced apart along the second direction; one end of each spring abuts against the abutment plate arranged on the slide, and the other end abuts against the mounting platform; The mounting platform is provided with multiple accommodating cavities for accommodating the springs, each accommodating cavity is connected to the sliding cavity, and the other end of each spring abuts against the side wall of the accommodating cavity; the abutting plate is located in the accommodating cavity.

6. The single-phase energy meter calibration device for a automated energy meter calibration line as described in claim 1, characterized in that, The fixed structure includes a telescopic structure, a movable block, a flipping plate, and a torsion spring. The telescopic structure is disposed in the placement groove along the first direction. The telescopic structure has a fixed end and a telescopic end. The fixed end of the telescopic structure is fixedly connected to the auxiliary platform, and the telescopic end of the telescopic structure extends away from the slide block. The movable block is slidably disposed in the placement groove and connected to the telescopic end of the telescopic structure. The movable block is provided with a hinge seat. One end of the flipping plate is hinged to the hinge seat. The flipping plate is used to tilt and rotate to a horizontal position after the telescopic end of the telescopic structure extends to its limit position. Alternatively, after the telescopic end of the telescopic structure retracts, it can be tilted and rotated to a vertical position. When the flip plate is in a vertical position, the other end of the flip plate is located in the slide groove, pushing the single-phase energy meter to be tested, and clamping and fixing the single-phase energy meter to be tested together with the two limit rods. The torsion spring is sleeved on the hinge shaft between the flip plate and the hinge seat. The torsion spring has two abutting ends. One abutting end of the torsion spring abuts against the moving block, and the other abutting end of the torsion spring abuts against the flip plate to spring the flip plate, so that the flip plate has a tendency to flip to a vertical position. Wherein, a limiting plate is provided at the end of the placement groove away from the sliding cavity. The top of the limiting plate is flush with the bottom surface of the sliding groove. The limiting plate is used to abut against the flip plate after the telescopic end of the telescopic structure is extended, so that the flip plate can be tilted and rotated to a horizontal state.

7. The single-phase energy meter calibration device for an automated energy meter calibration line as described in claim 6, characterized in that, Pressure sensors are provided on the surfaces of the flip plate and the single-phase energy meter to be tested. The pressure sensors are used to monitor the clamping force between the flip plate and the limiting rod on the single-phase energy meter to be tested.

8. The single-phase energy meter calibration device for an automated energy meter calibration line as described in claim 1, characterized in that, Each of the probe structures includes an abutment pin and an elastic element; the abutment pin is slidably disposed in the slide along the first direction, and the other end of the abutment pin extends out of the slide and abuts against the corresponding current and voltage terminals or auxiliary communication terminals on the single-phase energy meter to be tested; the elastic element is located in the slide and disposed along the first direction, and the elastic element abuts against the abutment pin to buffer the impact force received by the abutment pin; The slide block is provided with a sliding hole for the sliding connection of the abutment pin and for the placement of the elastic element.

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