Electric energy meter calibration equipment
By designing positioning, detection, and tightening mechanisms for electricity meter calibration equipment, the problem of unreliable circuit connections in electricity meter calibration was solved, enabling reliable connection and safe calibration of electricity meters, and ensuring metering accuracy and fairness.
Patent Information
- Application Number
- CN202511669802.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-14
- Publication Date
- 2026-02-24
AI Technical Summary
During electricity meter calibration, unreliable circuit connections can lead to distorted calibration results, posing safety hazards and affecting the accuracy and fairness of metering.
An energy meter calibration device was designed, comprising a positioning mechanism, a testing mechanism, and a tightening mechanism. The positioning mechanism positions and moves the energy meter, the testing mechanism automatically connects the circuit, and the tightening mechanism automatically tightens the energy meter's wiring knob to ensure a reliable circuit connection.
This ensures a reliable connection for the electricity meter, guarantees the accuracy of the verification results, avoids safety hazards caused by poor connections, and improves the accuracy and fairness of metering.
Smart Images
Figure CN121559417A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of electricity meter verification technology, specifically to an electricity meter verification device. Background Technology
[0002] An electricity meter, also known as a kilowatt-hour meter, is a specialized instrument used to measure electricity consumption and is a key basis for electricity billing and power management. Its unit of measurement is typically kilowatt-hour (kW·h). Based on their working principle, they are mainly divided into two categories: mechanical (induction) and electronic (smart) meters. Modern smart electricity meters, in addition to accurate metering, possess multiple functions such as data storage, remote communication, multi-rate billing, load control, and real-time monitoring, making them a core infrastructure for realizing the Advanced Metering System (AMI) of smart grids. The production, installation, and use of electricity meters must strictly comply with relevant national or international standards and are subject to periodic mandatory verification by legally authorized metrological verification institutions to ensure their accuracy, reliability, and impartiality, protecting the legitimate rights and interests of both electricity suppliers and users.
[0003] During electricity meter calibration, unreliable circuit connections will directly lead to distorted calibration results and may cause serious consequences. Unreliable connections (such as loose connections, oxidation, or excessive contact resistance) will introduce additional contact resistance, thereby changing the actual current and voltage values in the circuits of the standard electricity meter and the meter being calibrated, producing significant additional errors. This may not only lead to misjudgment of the meter's measurement performance, classifying qualified meters as unqualified or vice versa, seriously affecting the accuracy and fairness of measurement, but may also endanger the safety of personnel and equipment due to overheating or open circuits at connection points, creating safety hazards. Summary of the Invention
[0004] To achieve the above objectives, the present invention provides the following technical solution: an electricity meter calibration device, comprising a frame; The positioning mechanism is used to position the electricity meter. By setting the positioning mechanism, the electricity meter can be squeezed after it is placed on the upper surface of the frame, so that the electricity meter moves on the upper surface of the frame and moves to the detection area. The testing mechanism is used to calibrate the electricity meter, and a first connecting frame is set on the outer surface of the testing mechanism. By setting the testing mechanism, the circuit can be automatically connected to the electricity meter when the positioning mechanism moves the electricity meter, and the electricity meter can be connected to the circuit in the future. The tightening mechanism is used to tighten the knob of the electricity meter, and the second connecting bracket is fixedly connected to the outer surface of the tightening mechanism. By setting the tightening mechanism, it can automatically approach the wiring position of the electricity meter and tighten the wiring knob during the connection between the electricity meter and the detection mechanism, so as to loosen it during the detection of the electricity meter. The detection mechanism includes a fixed plate welded to the outer surface of the first connecting frame. Four wiring mechanisms are evenly distributed on the inner wall of the fixed plate. Each wiring mechanism includes a wire frame and a vent frame. The wire frame is welded to the outer surface of the fixed plate, and the vent frame is welded to the inner wall of the fixed plate. A terminal block is fixedly connected to the inner wall of the vent frame. By providing four wiring mechanisms, the energy meter can contact its four terminals, thus connecting the energy meter to the detection circuit. The vent frame allows heat generated by the terminal blocks to dissipate. The four terminal blocks can connect to the four connectors of the energy meter, thus connecting the energy meter to the circuit.
[0005] Preferably, the first connecting frame is welded to the upper surface of the frame, the detection mechanism is disposed on the upper surface of the frame via the first connecting frame, the second connecting frame is welded to the upper surface of the frame, and the tightening mechanism is disposed directly above the frame via the second connecting frame.
[0006] Preferably, the positioning mechanism includes a rolling screw device and a positioning plate. The rolling screw device is fixedly connected to the inner cavity of the frame, and the positioning plate is riveted to the side of the upper surface of the frame. A sliding groove is provided on the upper surface of the frame. A sliding sleeve is provided at the movable end of the rolling screw device. A sliding plate is welded to the upper surface of the sliding sleeve. The sliding plate is slidably connected to the sliding groove on the upper surface of the frame. An extrusion plate is welded to the upper surface of the sliding plate. A soft pad is welded to the side of the extrusion plate near the detection mechanism.
[0007] Preferably, the upper surface of the ventilated frame is provided with a track groove, the outer surface of the ventilated frame is fitted with a sliding cylinder, the top of the inner wall of the sliding cylinder is riveted with a sliding block, the sliding block is slidably connected to the track groove on the upper surface of the ventilated frame, a positioning frame is welded to the end of the sliding cylinder away from the ventilated frame, and a washer is fixedly connected to the outer surface of the positioning frame.
[0008] Preferably, the detection mechanism further includes a first switch and a second switch. The first switch is fixedly connected to the side of the upper surface of the frame, and the second switch is fixedly connected to the side of the upper surface of the frame away from the first switch. A first live wire and a first neutral wire are fixedly connected to the connection point of the first switch. A second live wire and a second neutral wire are fixedly connected to the connection point of the second switch. The first live wire, the second live wire, the first neutral wire, and the second neutral wire are respectively connected to the four terminals.
[0009] Preferably, a first fixing block is fixedly connected to the track groove on the upper surface of the ventilated frame, a second fixing block is fixedly connected to the side of the upper surface of the sliding cylinder near the first fixing block, a first spring is fixedly connected to the side of the first fixing block near the second fixing block, and the end of the first spring is fixedly connected to the outer surface of the second fixing block.
[0010] Preferably, the tightening mechanism includes a telescopic tube and a pressing disc. The telescopic tube is fixedly connected to the upper surface of the first fixed block, and the pressing disc is fixedly connected to the upper surface of the second fixed block. The pressing disc is pressed and adapted to the end of the telescopic tube. A connecting tube passes through the upper surface of the telescopic tube. A limiting tube passes through the end of the connecting tube away from the telescopic tube. A pressing column is slidably connected to the inner cavity of the limiting tube. A connecting frame is sleeved on the outer surface of the limiting tube. The connecting frame is welded to the top of the second connecting frame.
[0011] Preferably, a track frame is welded to the lower surface of the connecting frame, a stepper motor is slidably connected to the inner cavity of the track frame, the bottom end of the extrusion column is extruded and adapted to the upper surface of the stepper motor, a rotating rod is installed at the output end of the stepper motor through a coupling, a first gear is welded to the bottom end of the rotating rod, a sliding frame is slidably connected to the outer surface of the rotating rod, a straight cylinder is welded to the inner wall of the track frame, a sliding column is slidably connected to the inner cavity of the straight cylinder, the sliding column is welded to the outer side of the sliding frame, a second spring is welded to the bottom end of the sliding column, and the bottom end of the second spring is welded to the bottom of the inner wall of the straight cylinder.
[0012] Preferably, a top frame is fixedly connected to the inner wall of the sliding frame, a support rod is welded to the lower surface of the top frame, a sleeve is welded to the bottom end of the support rod, a rolling bearing is fixedly connected to the inner surface of the support rod, a belt is movably connected to the inner cavity of the sleeve, the first gear meshes with the inner surface of the belt, and a rotating ring is fixedly connected to the inner ring of the rolling bearing.
[0013] Preferably, a track cylinder is fixedly connected to the lower surface of the rotating ring, a second gear is welded to the top of the outer surface of the track cylinder, the second gear meshes with the inner surface of the belt, a movable column is slidably connected to the inner cavity of the track cylinder, a third spring is welded to the top of the movable column, the top of the third spring is welded to the top of the inner wall of the track cylinder, and a crosshead is welded to the bottom of the movable column.
[0014] This invention provides an electricity meter calibration device. It has the following beneficial effects: 1. This electricity meter calibration equipment, by setting a positioning mechanism, can squeeze the electricity meter after it is placed on the upper surface of the frame, thereby moving the electricity meter on the upper surface of the frame and moving it to the testing area.
[0015] II. This electricity meter calibration device, by setting up a detection mechanism, can automatically connect the circuit to the electricity meter when the positioning mechanism moves the electricity meter, and subsequently connect the electricity meter to the circuit. By setting up four wiring mechanisms, it can contact the four wiring holes of the electricity meter respectively, thereby connecting the electricity meter to the detection circuit. By setting up a vent frame, the heat generated by the terminals can be dissipated. By setting up four terminals, it can connect to the four connectors of the electricity meter respectively, thereby connecting the electricity meter to the circuit.
[0016] Third, this electricity meter calibration equipment, by setting a tightening mechanism, can automatically approach the wiring position of the electricity meter and tighten the wiring knob during the connection between the electricity meter and the testing mechanism, thereby loosening the meter during the testing process. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the external structure of an energy meter calibration device according to the present invention; Figure 2 This is a side view of the structure of an energy meter calibration device according to the present invention; Figure 3 This is a schematic diagram of the positioning mechanism structure of the present invention; Figure 4 This is a partial structural schematic diagram of an energy meter calibration device according to the present invention; Figure 5 This is a schematic diagram of the detection mechanism of the present invention; Figure 6 This is a schematic diagram of the wiring mechanism of the present invention; Figure 7 This is a schematic cross-sectional view of the wiring mechanism of the present invention; Figure 8 This is a schematic diagram of the tightening mechanism of the present invention; Figure 9 This is a partial structural diagram of the tightening mechanism of the present invention; Figure 10 This is a schematic cross-sectional view of the tightening mechanism of the present invention; Figure 11 This is a partial cross-sectional structural diagram of the tightening mechanism of the present invention; Figure 12 This is a schematic diagram of the cross-sectional structure of the track cylinder of the present invention.
[0018] In the diagram: 1. Frame; 2. Positioning mechanism; 21. Rolling screw device; 22. Positioning plate; 23. Sliding sleeve; 24. Sliding plate; 25. Extrusion plate; 26. Soft pad; 3. First connecting frame; 4. Detection mechanism; 41. Fixing plate; 42. Wiring mechanism; 421. Wire frame; 422. Ventilation frame; 423. Sliding cylinder; 424. Positioning frame; 425. Washer; 426. Terminal block; 427. First fixing block; 428. Second fixing block; 429. First spring; 43. First live wire; 44. First neutral wire; 45. First switch; 46. Second live wire; 47. Second neutral wire; 48. Second switch; 5. Second connecting frame; 6. Tightening mechanism; 61. Telescopic tube; 62. Extrusion plate; 63. Connecting tube; 64. Connecting frame; 65. Limiting tube; 66. Extrusion column; 67. Track frame; 68. Stepper motor; 69. Rotating rod; 610. Straight cylinder; 611. Sliding frame; 612. Sliding column; 613. Second spring; 614. First gear; 615. Top frame; 616. Support rod; 617. Rolling bearing; 618. Wrapping sleeve; 619. Belt; 620. Rotating ring; 621. Second gear; 622. Track cylinder; 623. Moving column; 624. Third spring; 625. Crosshead. Detailed Implementation
[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose. like Figures 1-12 As shown, the present invention provides a technical solution: an energy meter calibration device, including a frame 1; Positioning mechanism 2 is used to position the energy meter. By setting the positioning mechanism 2, the energy meter can be squeezed after it is placed on the upper surface of the frame 1, so that the energy meter moves on the upper surface of the frame 1 and moves to the detection area. The testing mechanism 4 is used to verify the electricity meter, and the first connecting frame 3 is set on the outer surface of the testing mechanism 4. By setting the testing mechanism 4, when the positioning mechanism 2 moves the electricity meter, the circuit can be automatically connected to the electricity meter, and the electricity meter can be connected to the circuit in the future. Tightening mechanism 6 is used to tighten the knob of the electricity meter, and a second connecting bracket 5 is fixedly connected to the outer surface of the tightening mechanism 6. By setting the tightening mechanism 6, it can automatically approach the wiring position of the electricity meter and tighten the wiring knob during the connection process between the electricity meter and the detection mechanism 4, so as to loosen it during the detection process of the electricity meter. The detection mechanism 4 includes a fixing plate 41, which is welded to the outer surface of the first connecting frame 3. A wiring mechanism 42 is provided on the inner wall of the fixing plate 41. There are four wiring mechanisms 42, which are evenly distributed. Each wiring mechanism 42 includes a wire frame 421 and a vent frame 422. The wire frame 421 is welded to the outer surface of the fixing plate 41, and the vent frame 422 is welded to the inner wall of the fixing plate 41. A terminal block 426 is fixedly connected to the inner wall of the vent frame 422. By providing four wiring mechanisms 42, they can respectively contact the four wiring holes of the energy meter, thereby connecting the energy meter to the detection circuit. By providing the vent frame 422, the heat generated by the terminal block 426 can be dissipated. By providing four terminal blocks 426, they can respectively connect to the four connectors of the energy meter, thereby connecting the energy meter to the circuit.
[0020] The first connecting frame 3 is welded to the upper surface of the frame 1. The detection mechanism 4 is set on the upper surface of the frame 1 through the first connecting frame 3. The second connecting frame 5 is welded to the upper surface of the frame 1. The tightening mechanism 6 is set directly above the frame 1 through the second connecting frame 5.
[0021] The positioning mechanism 2 includes a rolling screw device 21 and a positioning plate 22. The rolling screw device 21 is fixedly connected to the inner cavity of the frame 1. The positioning plate 22 is riveted to the side of the upper surface of the frame 1. A sliding groove is provided on the upper surface of the frame 1. A sliding sleeve 23 is provided at the movable end of the rolling screw device 21. A sliding plate 24 is welded to the upper surface of the sliding sleeve 23. The sliding plate 24 is slidably connected to the sliding groove on the upper surface of the frame 1. An extrusion plate 25 is welded to the upper surface of the sliding plate 24. The extrusion plate 25 is close to the detection mechanism. A soft pad 26 is welded to one side of 4. By setting a rolling screw device 21, the sliding sleeve 23 can drive the sliding plate 24 to move back and forth horizontally along the sliding groove opened on the upper surface of the frame 1 during the operation. This causes the pressing plate 25 and the soft pad 26 to press the energy meter placed on the upper surface of the frame 1, and finally make the energy meter move on the upper surface of the frame 1. By setting a positioning plate 22, the movement trajectory of the energy meter can be limited to prevent the joint position of the energy meter from shifting during the movement.
[0022] A track groove is provided on the upper surface of the vent frame 422, and a sliding cylinder 423 is fitted onto the outer surface of the vent frame 422. A sliding block is riveted to the top of the inner wall of the sliding cylinder 423, and the sliding block is slidably connected to the track groove on the upper surface of the vent frame 422. A positioning frame 424 is welded to the end of the sliding cylinder 423 away from the vent frame 422, and a washer 425 is fixedly connected to the outer surface of the positioning frame 424. By providing a track groove on the upper surface of the vent frame 422, it can cooperate with the sliding block riveted to the top of the inner wall of the sliding cylinder 423, thereby allowing the sliding cylinder 423 to move laterally on the outer surface of the vent frame 422. The device moves without rotating. The sliding cylinder 423 protects the terminal 426, preventing it from being exposed and damaged by impact when the device is idle. The positioning frame 424 and washer 425 press against the meter's interface as the meter moves with the positioning mechanism 2. Finally, as the meter moves, the sliding cylinder 423 moves on the outer surface of the vent frame 422, ultimately inserting the terminal 426 into the meter's interface. The detection mechanism 4 also includes a first opening... Switch 45 and switch 48 are fixedly connected. Switch 45 is fixedly connected to the side of the upper surface of the frame 1, and switch 48 is fixedly connected to the side of the upper surface of the frame 1 away from switch 45. A first live wire 43 and a first neutral wire 44 are fixedly connected to the connection point of switch 45. A second live wire 46 and a second neutral wire 47 are fixedly connected to the connection point of switch 48. The first live wire 43, the second live wire 46, the first neutral wire 44, and the second neutral wire 47 are respectively connected to four terminals 426. By setting up the first live wire 43, the first neutral wire 44, the second live wire 46, and the second neutral wire 47, these four wires form a complete power circuit, so that the energy meter is connected in series between the main power supply and the output appliance. The first live wire 43 and the first neutral wire 44 are connected to the high-voltage power supply, and the second live wire 46 and the second neutral wire 47 are connected to the detection equipment. Thus, when the detection equipment uses power, the energy meter measures the electricity consumed in the wires. At the same time, according to the amount of current released, by setting up the first switch 45 and the second switch 48, the circuit can be switched between open and closed circuits during detection.
[0023] A first fixing block 427 is fixedly connected to the track groove on the upper surface of the vent frame 422. A second fixing block 428 is fixedly connected to the side of the upper surface of the sliding cylinder 423 near the first fixing block 427. A first spring 429 is fixedly connected to the side of the first fixing block 427 near the second fixing block 428. The end of the first spring 429 is fixedly connected to the outer surface of the second fixing block 428. By setting the first fixing block 427, the second fixing block 428 and the first spring 429, when the sliding cylinder 423 slides and is no longer subjected to the squeezing force, the sliding cylinder 423 can be moved away from the vent frame 422 and re-wrap the terminal 426.
[0024] The tightening mechanism 6 includes a telescopic tube 61 and a compression disc 62. The telescopic tube 61 is fixedly connected to the upper surface of the first fixed block 427, and the compression disc 62 is fixedly connected to the upper surface of the second fixed block 428. The compression disc 62 is adapted to the end of the telescopic tube 61. A connecting tube 63 passes through the upper surface of the telescopic tube 61. A limiting tube 65 passes through the end of the connecting tube 63 away from the telescopic tube 61. A compression column 66 is slidably connected to the inner cavity of the limiting tube 65. A connecting frame 64 is sleeved on the outer surface of the limiting tube 65. The connecting frame 64 is welded to the top of the second connecting frame 5. By setting the telescopic tube 61, it can expand and contract when compressed, thereby compressing the internal gas. By setting the compression disc 62, the sliding cylinder 423 can move with the compression disc 62. The end of the telescopic tube 61 is compressed. A limiting tube 65 is provided to limit the compression column 66, allowing it to move vertically up and down within the inner cavity of the limiting tube 65. A connecting tube 63 connects the telescopic tube 61 and the limiting tube 65. A track frame 67 is welded to the lower surface of the connecting frame 64. A stepper motor 68 is slidably connected to the inner cavity of the track frame 67. The bottom end of the compression column 66 is compressed and fitted to the upper surface of the stepper motor 68. A rotating rod 69 is mounted on the output end of the stepper motor 68 via a coupling. A first gear 614 is welded to the bottom end of the rotating rod 69. A sliding frame 611 is slidably connected to the outer surface of the rotating rod 69. A straight cylinder 610 is welded to the inner wall of the track frame 67. A sliding frame 611 is slidably connected to the inner cavity of the straight cylinder 610. A sliding post 612 is welded to the outer side of the sliding frame 611. A second spring 613 is welded to the bottom end of the sliding post 612, and the bottom end of the second spring 613 is welded to the bottom of the inner wall of the straight cylinder 610. By setting a track frame 67, the stepper motor 68 can be wrapped and limited, so that the stepper motor 68 will not slip or leave the inner cavity area of the track frame 67 when it moves vertically up and down. By setting the stepper motor 68, after the power is connected and the switch is turned on, the rotating rod 69 drives the first gear 614 to rotate. By setting the straight cylinder 610, the sliding post 612 can be limited, so that the sliding post 612 can drive the sliding frame 611 to move vertically up and down. By setting the second spring 613, it can... The sliding column 612 is supported so that when the sliding column 612 and the sliding frame 611 are not subjected to downward pressure, the stepper motor 68 is positioned at the top of the inner cavity of the track frame 67. A top frame 615 is fixedly connected to the inner wall of the sliding frame 611. A support rod 616 is welded to the lower surface of the top frame 615. A sleeve 618 is welded to the bottom end of the support rod 616. A rolling bearing 617 is fixedly connected to the inner surface of the support rod 616. A belt 619 is movably connected to the inner cavity of the sleeve 618. A first gear 614 meshes with the inner surface of the belt 619. A rotating ring 620 is fixedly connected to the inner ring of the rolling bearing 617. By setting the sleeve 618, the belt 619 can be wrapped and limited. The inner wall of the sleeve 618 has an annular protrusion.The belt 619 contacts the annular groove on its outer surface, causing it to rotate within the inner cavity of the sleeve 618. When the first gear 614 rotates, it drives the belt 619 to rotate. A track cylinder 622 is fixedly connected to the lower surface of the rotating ring 620. A second gear 621 is welded to the top of the outer surface of the track cylinder 622, meshing with the inner surface of the belt 619. A movable column 623 is slidably connected to the inner cavity of the track cylinder 622. A third spring 624 is welded to the top of the movable column 623, and its top is welded to the top of the inner wall of the track cylinder 622. A crosshead 625 is welded to the bottom of the movable column 623. By using a rolling bearing 617, the belt 619 rotates, driving the second gear 621 to rotate, ultimately causing the rotating ring 620 to rotate the track cylinder 622. This causes the crosshead 625 to contact the connector of the electricity meter, tightening the connector.
[0025] Working principle: During use, the operator places the energy meter to be tested on the upper surface of the frame 1, and then starts the rolling screw device 21, causing the sliding sleeve 23 to move on the outer surface of the rolling screw device 21. This ultimately moves the sliding plate 24 and the pressing plate 25 towards the outer surface of the energy meter, and during this movement, the energy meter interface position moves towards the testing mechanism 4. When the energy meter contacts and presses against the outer surfaces of the positioning frame 424 and the washer 425, the sliding cylinder 423 is pressed and slides on the outer surface of the vent frame 422, ultimately exposing the terminal 426 and inserting it into the energy meter interface. As the terminal 426 is inserted, the pressing plate 62 presses against the telescopic tube 61, ultimately causing the air in the inner cavity of the telescopic tube 61 to enter the inner cavity of the limiting tube 65 through the connecting pipe 63, thereby... The pressing column 66 moves downward to press against the upper surface of the stepper motor 68. When the energy meter is in the correct position, the pressing column 66 moves downward to its limit, and at the same time, the crosshead 625 contacts the connector screw of the energy meter. At this time, the stepper motor 68 starts to work and drives the first gear 614 to rotate, which in turn drives the belt 619 to rotate the second gear 621. Finally, the rotating ring 620 and the track cylinder 622 rotate, which in turn tightens the connector screw of the energy meter with the crosshead 625. Then, the first live wire 43 and the first neutral wire 44 are connected to the high-voltage power supply, and the second live wire 46 and the second neutral wire 47 are connected to the detection equipment. When the detection equipment is powered, the energy meter measures the electricity consumed in the wires, and at the same time, the accuracy of the energy meter data is judged based on the amount of current released.
[0026] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.
Claims
1. An electricity meter calibration device, characterized in that, include: frame; A positioning mechanism used to locate an electricity meter; Testing mechanism for calibrating electricity meters, and a first connecting frame disposed on the outer surface of the testing mechanism; A tightening mechanism for tightening the knob of the electricity meter, and a second connecting bracket fixedly connected to the outer surface of the tightening mechanism; The testing mechanism includes a fixed plate, which is welded to the outer surface of the first connecting frame. A wiring mechanism is provided on the inner wall of the fixed plate. There are four wiring mechanisms, which are evenly distributed. The wiring mechanism includes a wire frame and a vent frame. The wire frame is welded to the outer surface of the fixed plate, and the vent frame is welded to the inner wall of the fixed plate. A terminal block is fixedly connected to the inner wall of the vent frame.
2. The electricity meter calibration device according to claim 1, characterized in that: The first connecting frame is welded to the upper surface of the frame, the detection mechanism is set on the upper surface of the frame through the first connecting frame, the second connecting frame is welded to the upper surface of the frame, and the tightening mechanism is set directly above the frame through the second connecting frame.
3. The electricity meter calibration device according to claim 1, characterized in that: The positioning mechanism includes a rolling screw device and a positioning plate. The rolling screw device is fixedly connected to the inner cavity of the frame. The positioning plate is riveted to the side of the upper surface of the frame. A sliding groove is provided on the upper surface of the frame. A sliding sleeve is provided on the movable end of the rolling screw device. A sliding plate is welded to the upper surface of the sliding sleeve. The sliding plate is slidably connected to the sliding groove on the upper surface of the frame. An extrusion plate is welded to the upper surface of the sliding plate. A soft pad is welded to the side of the extrusion plate near the detection mechanism.
4. The electricity meter calibration device according to claim 1, characterized in that: The upper surface of the ventilated frame is provided with a track groove, and the outer surface of the ventilated frame is fitted with a sliding cylinder. A sliding block is riveted to the top of the inner wall of the sliding cylinder. The sliding block is slidably connected to the track groove on the upper surface of the ventilated frame. A positioning frame is welded to the end of the sliding cylinder away from the ventilated frame, and a washer is fixedly connected to the outer surface of the positioning frame.
5. The electricity meter calibration device according to claim 4, characterized in that: The detection mechanism further includes a first switch and a second switch. The first switch is fixedly connected to the side of the upper surface of the frame, and the second switch is fixedly connected to the side of the upper surface of the frame away from the first switch. A first live wire and a first neutral wire are fixedly connected to the connection point of the first switch. A second live wire and a second neutral wire are fixedly connected to the connection point of the second switch. The first live wire, the second live wire, the first neutral wire, and the second neutral wire are respectively connected to the four terminals.
6. The electricity meter calibration device according to claim 5, characterized in that: A first fixing block is fixedly connected to the track groove on the upper surface of the ventilated frame, a second fixing block is fixedly connected to the side of the upper surface of the ventilated frame away from the first fixing block, a first spring is fixedly connected to the side of the upper surface of the sliding cylinder close to the first fixing block, and the end of the first spring is fixedly connected to the outer surface of the second fixing block.
7. The electricity meter calibration device according to claim 6, characterized in that: The tightening mechanism includes a telescopic tube and a pressing disc. The telescopic tube is fixedly connected to the upper surface of the first fixed block, and the pressing disc is fixedly connected to the upper surface of the second fixed block. The pressing disc is adapted to press against the end of the telescopic tube. A connecting tube passes through the upper surface of the telescopic tube. A limiting tube passes through the end of the connecting tube away from the telescopic tube. A pressing column is slidably connected to the inner cavity of the limiting tube. A connecting frame is sleeved on the outer surface of the limiting tube. The connecting frame is welded to the top of the second connecting frame.
8. The electricity meter calibration device according to claim 7, characterized in that: A track frame is welded to the lower surface of the connecting frame. A stepper motor is slidably connected to the inner cavity of the track frame. The bottom end of the extrusion column is extruded and adapted to the upper surface of the stepper motor. A rotating rod is installed at the output end of the stepper motor through a coupling. A first gear is welded to the bottom end of the rotating rod. A sliding frame is slidably connected to the outer surface of the rotating rod. A straight cylinder is welded to the inner wall of the track frame. A sliding column is slidably connected to the inner cavity of the straight cylinder. The sliding column is welded to the outer side of the sliding frame. A second spring is welded to the bottom end of the sliding column. The bottom end of the second spring is welded to the bottom of the inner wall of the straight cylinder.
9. The electricity meter calibration device according to claim 8, characterized in that: A top frame is fixedly connected to the inner wall of the sliding frame. A support rod is welded to the lower surface of the top frame. A sleeve is welded to the bottom end of the support rod. A rolling bearing is fixedly connected to the inner surface of the support rod. A belt is movably connected to the inner cavity of the sleeve. The first gear meshes with the inner surface of the belt. A rotating ring is fixedly connected to the inner ring of the rolling bearing.
10. The electricity meter calibration device according to claim 9, characterized in that: A track cylinder is fixedly connected to the lower surface of the rotating ring. A second gear is welded to the top of the outer surface of the track cylinder. The second gear meshes with the inner surface of the belt. A movable column is slidably connected to the inner cavity of the track cylinder. A third spring is welded to the top of the movable column. The top of the third spring is welded to the top of the inner wall of the track cylinder. A crosshead is welded to the bottom of the movable column.