An electric energy meter error calibration device and calibration method under constant magnetic field conditions

Abstract

The present invention discloses an error calibration device and calibration method for an electric energy meter under constant magnetic field conditions, and relates to the technical field of error calibration devices for electric energy meters. An error calibration device for an electric energy meter under constant magnetic field conditions comprises: a test turntable and a material transfer turntable respectively arranged on the installation cabinet; the present invention can, through the test turntable and the material transfer turntable arranged, automatically drive the power supply and discharge device plug to automatically insert into the wiring terminal of the electric energy meter when the electric energy meter is placed in the placement slot, and then after the calibration is completed in the test area, when transferring to the material transfer area, the power supply and discharge device plug can be automatically separated from the wiring terminal, and when arriving at the material transfer area, the electric energy meter in the placement slot is automatically popped up and enters the fixture on the material transfer turntable to complete the material transfer operation of the electric energy meter after calibration, so that the device is simple to operate, can realize batch calibration operation, and has fewer manual operation steps, and at the same time, less electrical equipment is used, which effectively reduces potential safety hazards.

Description

Technical Field

[0001] The invention belongs to the technical field of electric energy meter error checking equipment, and in particular relates to an electric energy meter error checking equipment under constant magnetic field conditions. Background Art

[0002] The electric energy meter is the terminal metering equipment of the intelligent power consumption system, which can effectively realize various electric parameter measurements, remote data communication, multi-function selection, and multiple electric energy metering and billing operations;

[0003] The external constant magnetic field has a great influence on the metering performance of the electric energy meter, mainly affecting the power module, current transformer and sampling unit inside the electric energy meter, so that the electric energy meter cannot measure accurately. Therefore, the electric energy meter needs to be tested for the influence of external constant magnetic field during production, quality inspection and testing. However, the existing test devices are generally inconvenient to operate, have low detection efficiency during batch testing, and have too many manual operation steps during operation, resulting in potential safety hazards. For this reason, we propose an electric energy meter error calibration device under constant magnetic field conditions. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an electric energy meter error calibration device under constant magnetic field conditions that can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: an error calibration device for electric energy meters under constant magnetic field conditions, including an installation cabinet, and also including: a test turntable and a material transfer turntable respectively rotatably arranged on the installation cabinet, a plurality of placement slots for placing electric energy meters are arranged on the circumference of the test turntable, and a plurality of clamps for clamping electric energy meters are arranged on the circumference of the bottom surface of the material transfer turntable; a plurality of power supply and discharge device plugs are arranged on the test turntable, and the power supply and discharge device plugs correspond to the placement slots. When the electric energy meter is loaded from the first loading area, the second loading area, the test turntable and the material transfer turntable are respectively rotatably arranged on the installation cabinet, and a plurality of clamps for clamping the electric energy meter are arranged on the circumference of the bottom surface of the material transfer turntable; a plurality of power supply and discharge device plugs are arranged on the test turntable, and the power supply and discharge device plugs correspond to the placement slots. When the electric energy meter is loaded from the first loading area, the second loading area, the test turntable and the material transfer turntable are respectively rotatably arranged on the installation cabinet, and ... respectively rotatably arranged on the installation cabinet, and a plurality of power supply and discharge device plugs are respectively rotatably arranged on the installation cabinet, and a plurality of power supply and discharge device plugs are respectively rotatably arranged on the installation cabinet, and a plurality of power supply and discharge device plugs are respectively rotatably arranged on the installation cabinet, and a plurality of power supply and discharge device plugs are respectively rotatably arranged on the installation cabinet, and a plurality of power supply and discharge device plugs are respectively rotatably arranged When the material area is placed in the placement slot, the power supply and discharge device plug corresponding to the placement slot automatically moves and is inserted into the terminal of the electric energy meter; the magnetic field generator arranged at the test area of ​​the installation cabinet is used to generate a constant magnetic field to perform measurement verification on the electric energy meter; when the electric energy meter in the test area moves to the material transfer area, the power supply and discharge device plug automatically moves away from the terminal of the electric energy meter, and then the electric energy meter automatically pops up from the placement slot and is clamped by the clamp on the material transfer turntable, and then the material transfer of the electric energy meter after the test is completed by the rotation of the material transfer turntable.

[0006] Preferably, a connecting frame is fixedly connected to the outer side of the test turntable near the placement slot, a rotating shaft is rotatably connected to the connecting frame, an external thread is provided on the outer periphery of one end of the rotating shaft, a mounting frame is threadedly connected to the rotating shaft through the external thread, the power supply and discharge device plug is installed on the mounting frame, a guide rod is fixedly connected to the outer side of the test turntable near the placement slot, and the mounting frame slides on the guide rod; a gear is connected to the other end of the rotating shaft, and when the electric energy meter is placed in the placement slot, the gear is automatically driven to drive the rotating shaft to rotate, so that the mounting frame is close to the placement slot on the rotating shaft.

[0007] Preferably, slideways are provided on the symmetrical inner walls of the placement groove, an upper push plate is slidably connected in the placement groove, both sides of the upper push plate are slidably connected in the slideways, and a rack is fixedly connected to the bottom surface of the upper push plate. When the electric energy meter is pressed downward into the placement groove, the upper push plate moves downward so that the rack engages with the gear to drive the rotating shaft to rotate.

[0008] Preferably, a friction wheel is fixedly connected to the rotating shaft, a friction pad is installed on the installation cabinet between the test area and the transfer area, the gear is connected to the rotating shaft through a ratchet, when the electric energy meter is pressed down into the placement slot, the rack meshes with the gear and drives the rotating shaft to rotate, when the test turntable rotates to move the electric energy meter from the test area to the transfer area, the friction wheel contacts the friction pad, causing the rotating shaft to reverse and drive the plug of the power supply and discharge device away from the terminal of the electric energy meter, while the gear does not rotate.

[0009] Preferably, a spring is fixedly connected to the bottom of the upper push plate, and the spring is fixedly connected to the bottom surface of the placement groove, and the bottom surface of the placement groove is fixedly connected to a first magnet, and the bottom surface of the upper push plate is fixedly connected to a second magnet, and the first magnet and the second magnet attract each other; it also includes an upward inclined plate installed on the installation cabinet near the material transfer area, and the rack corresponds to the upward inclined plate. When the rack passes through the upward inclined plate, the rack pushes the upper push plate upward to move, so that the upper push plate is disengaged from the first magnet, and the electric energy meter on the upper push plate pops up under the thrust of the spring.

[0010] Preferably, the clamp on the material transfer turntable includes symmetrically arranged clamping plates, fixed blocks are respectively arranged on both sides of the clamping plates, the fixed blocks are fixedly connected to the material transfer turntable, a sliding rod is slidably connected to the fixed block, the sliding rod is fixedly connected to the clamping plates, a third spring is sleeved on the sliding rod between the clamping plates and the fixed blocks, and the two ends of the third spring are respectively fixedly connected to the clamping plates and the fixed blocks.

[0011] Furthermore, a push rod is slidably connected to the clamp on the material transfer turntable, and the push rod is connected to the upper surface of the material transfer turntable through a second spring. The end of the push rod is fixedly connected to a material stripping plate, and the material stripping plate is located on the bottom surface of the material transfer turntable. When the electric energy meter on the material transfer turntable moves to the conveying area, the push rod automatically slides down to push the electric energy meter on the clamp to the conveying area.

[0012] Furthermore, a second bracket is fixedly connected to the installation cabinet, the material transfer turntable is rotatably set on the second bracket, the second bracket is fixedly connected to a third bracket, the third bracket is fixedly connected to a downward inclined plate, the downward inclined plate is located above the material transfer turntable, and the downward inclined plate corresponds to the top rod.

[0013] Furthermore, the material transfer turntable is also equipped with an electric push rod at the clamp, the telescopic end of the electric push rod penetrates to the bottom surface of the material transfer turntable, and a marking stamp is installed on the telescopic end of the electric push rod for stamping the front of the unqualified electric energy meter.

[0014] A method for error checking of an electric energy meter under a constant magnetic field condition, comprising the electric energy meter error checking device under a constant magnetic field condition, mainly comprising the following steps:

[0015] S1. In the first loading area or the second loading area on the installation cabinet, press the electric energy meter downward into the placement slot, and during the pressing process, the plug of the power supply and discharge device is inserted into the connection terminal of the electric energy meter;

[0016] S2. When the test turntable drives the electric energy meter to move to the test area, the magnetic field generator works to generate a constant magnetic field to interfere with the electric energy meter, thereby verifying the electric energy meter in a constant magnetic field environment;

[0017] S3. When the verification is completed, the electric energy meter is transferred from the test area to the material transfer area, and the plug of the power supply and discharge device is automatically detached from the wiring terminal of the electric energy meter. Then the electric energy meter pops up from the placement slot and is transferred to the material transfer turntable to complete the verification operation.

[0018] After adopting the above technical scheme, the present invention has the following beneficial effects compared with the prior art: the present invention can, by setting up the test turntable and the material transfer turntable, automatically drive the power supply and discharge device plug to automatically insert into the wiring terminal of the power meter when the power meter is placed in the placement slot, and then after completing the verification in the test area, when transferring to the material transfer area, the power supply and discharge device plug can be automatically separated from the wiring terminal, and when reaching the material transfer area, the power meter in the placement slot is automatically popped up and enters the fixture on the material transfer turntable to complete the material transfer operation of the verified power meter, so that the device is simple to operate, can realize batch verification operation, and has fewer manual operation steps, and at the same time, less electrical equipment is used, which effectively reduces potential safety hazards;

[0019] In addition, the device makes the electric energy meter elastically upward and is clamped in the fixture on the material transfer turntable, so that during the calibration process, the electric energy meter can always be facing upward, and the electric energy meter will not be turned over. This makes it unnecessary to turn the front and back of the electric energy meter over for subsequent packaging and packaging operations after the material transfer turntable completes the material transfer, thereby effectively reducing the workload and improving the calibration efficiency.

[0020] When calibrating in the test area, if the electric energy meter is found to be unqualified, the electric energy meter will be transferred to the transfer turntable through the transfer area. The electric push rod at the corresponding position will work, so that one end of the telescopic end pushes the marking stamp to contact the upper surface of the electric energy meter, marking the surface of the electric energy meter, making it more convenient for subsequent sorting.

[0021] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In the attached picture:

[0023] Figure 1 A schematic diagram of the three-dimensional structure of an electric energy meter error calibration device under a constant magnetic field condition proposed by the present invention Figure 1 ;

[0024] Figure 2 A schematic structural diagram of a friction pad and an upward tilting plate of an electric energy meter error calibration device under a constant magnetic field condition proposed by the present invention;

[0025] Figure 3 A schematic structural diagram of a test turntable and a material transfer turntable of an electric energy meter error calibration device under a constant magnetic field condition proposed by the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of a rack, a gear and a friction wheel of an electric energy meter error calibration device under a constant magnetic field condition proposed by the present invention;

[0027] Figure 5 A schematic diagram of the three-dimensional structure of an electric energy meter error calibration device under a constant magnetic field condition proposed by the present invention Figure 2 ;

[0028] Figure 6 The invention provides an electric energy meter error calibration device under a constant magnetic field condition. Figure 5 The structural diagram at A in the middle;

[0029] Figure 7 A schematic diagram of the three-dimensional structure of an electric energy meter error calibration device under a constant magnetic field condition proposed by the present invention Figure 3 ;

[0030] Figure 8The invention provides an electric energy meter error calibration device under a constant magnetic field condition. Figure 7 The structural diagram at B in the middle;

[0031] Fig. 9 The figure is a top view of an electric energy meter error calibration device under a constant magnetic field condition proposed by the present invention.

[0032] In the figure: 1, test turntable; 10, electric energy meter; 101, terminal; 11, placement slot; 111, first magnet; 12, push plate; 121, slideway; 122, first spring; 123, rack; 13, connecting frame; 131, rotating shaft; 132, external thread; 133, ratchet; 134, gear; 135, mounting frame; 136, guide rod; 137, friction wheel; 138, friction pad; 139, upward tilt plate; 14, power supply and discharge Equipment plug; 15, first bracket; 151, magnetic field generator; 2, material transfer turntable; 21, second bracket; 22, push rod; 221, second spring; 222, material stripping plate; 23, clamping plate; 231, fixing block; 232, sliding rod; 233, third spring; 24, third bracket; 241, downward tilting plate; 25, electric push rod; 3, installation cabinet; 4, conveying area; 5, first loading area; 6, second loading area; 7, testing area; 8, material transfer area. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0034] The following is combined with Figure 1 -Attached Fig. 9 , describes in detail the technical solutions provided by each embodiment of the present invention.

[0035] Example 1: Reference Figure 1-Figure 9, an electric energy meter error calibration device under constant magnetic field conditions, including an installation cabinet 3, and also including: a test turntable 1 and a material transfer turntable 2 respectively rotatably arranged on the installation cabinet 3, a plurality of placement slots 11 for placing the electric energy meter 10 are arranged on the circumference of the test turntable 1, and a plurality of clamps for clamping the electric energy meter 10 are arranged on the circumference of the bottom surface of the material transfer turntable 2; a plurality of power supply and discharge device plugs 14 are arranged on the test turntable 1, and the power supply and discharge device plugs 14 correspond to the placement slots 11. When the electric energy meter 10 is placed in the placement slots 11 from the first loading area 5 and the second loading area 6, the power supply and discharge device plugs 14 corresponding to the placement slots 11 automatically move and insert in The connection terminal 101 of the electric energy meter 10; a magnetic field generator 151 is arranged at the test area 7 of the installation cabinet 3, which is used to generate a constant magnetic field to perform measurement verification on the electric energy meter 10. The magnetic field generator 151 is installed on the installation cabinet 3 through the first bracket 15, and the magnetic field generator 151 is located above the test turntable 1; when the electric energy meter 10 in the test area 7 moves to the transfer area 8, the plug 14 of the power supply and discharge device automatically moves away from the connection terminal 101 of the electric energy meter 10, and then the electric energy meter 10 automatically pops up from the placement slot 11, and is clamped by the clamp on the transfer turntable 2, and then the transfer of the electric energy meter 10 after the test is completed by the rotation of the transfer turntable 2;

[0036] A connecting frame 13 is fixedly connected to the outer side of the test turntable 1 near the placement slot 11, and a rotating shaft 131 is rotatably connected to the connecting frame 13. An external thread 132 is provided on the outer periphery of one end of the rotating shaft 131, and a mounting frame 135 is threadedly connected to the rotating shaft 131 through the external thread 132, and the plug 14 of the discharge device is installed on the mounting frame 135. A guide rod 136 is fixedly connected to the outer side of the test turntable 1 near the placement slot 11, and the mounting frame 135 slides on the guide rod 136; a gear 134 is connected to the other end of the rotating shaft 131. When the electric energy meter 10 is placed in the placement slot 11, the self-driving gear 134 drives the rotating shaft 131 to rotate, so that the mounting frame 135 is close to the placement slot 11 on the rotating shaft 131;

[0037] The symmetrical inner walls of the placement groove 11 are all provided with slideways 121, and an upper push plate 12 is slidably connected in the placement groove 11. Both sides of the upper push plate 12 are slidably connected in the slideways 121. The bottom surface of the upper push plate 12 is fixedly connected with a rack 123, and the rack 123 extends from the placement groove 11 to the bottom of the test turntable 1. When the electric energy meter 10 is pressed downward into the placement groove 11, the upper push plate 12 moves downward so that the rack 123 engages with the gear 134 to drive the rotating shaft 131 to rotate. In order to further reduce the friction between the upper push plate 12 and the slideway 121, an embedded movable ball bearing can be provided at the connection between the upper push plate 12 and the slideway 121, or an movable ball bearing can be embedded on the inner wall of the slideway 121, so that the upper push plate 12 can slide more smoothly.

[0038] A friction wheel 137 is fixedly connected to the rotating shaft 131, and a friction pad 138 is installed on the installation cabinet 3 between the test area 7 and the material transfer area 8. The gear 134 is connected to the rotating shaft 131 through the ratchet 133. When the electric energy meter 10 is pressed down into the placement slot 11, the rack 123 meshes with the gear 134 and drives the rotating shaft 131 to rotate. When the test turntable 1 rotates to move the electric energy meter 10 from the test area 7 to the material transfer area 8, the friction wheel 137 contacts the friction pad 138, so that the rotating shaft 131 reverses and drives the power supply and discharge device plug 14 away from the terminal 101 of the electric energy meter 10, and the gear 134 does not rotate;

[0039] The bottom of the upper push plate 12 is fixedly connected with a first spring 122, the first spring 122 is fixedly connected to the bottom surface of the placement groove 11, the bottom surface of the placement groove 11 is fixedly connected with a first magnet 111, and the bottom surface of the upper push plate 12 is fixedly connected with a second magnet, and the first magnet 111 and the second magnet attract each other; it also includes an upwardly inclined plate 139 installed on the installation cabinet 3 near the material transfer area 8, and the rack 123 corresponds to the upwardly inclined plate 139. When the rack 123 passes through the upwardly inclined plate 139, the rack 123 pushes the upper push plate 12 upward to move, so that the upper push plate 12 is separated from the first magnet 111, and the electric energy meter 10 on the upper push plate 12 is bounced upward under the thrust of the first spring 122;

[0040] When the device is in use, the electric energy meter 10 is pressed downward into the placement slot 11 in the first loading area 5 or the second loading area 6 located on the installation cabinet 3. During the pressing process, the electric energy meter 10 pushes the upper push plate 12 downward, and the upper push plate 12 slides downward in the placement slot 11, and the rack 123 is meshed with the gear 134 during the downward movement. At this time, the rotating shaft 131 rotates, so that the mounting bracket 135 threadedly connected to one end of the rotating shaft 131 moves toward the electric energy meter 10, and the mounting bracket 135 makes the power supply and discharge device plug 14 inserted into the terminal 101 of the electric energy meter 10 when moving;

[0041] The power supply and discharge device plug 14 is mainly used to supply power to and discharge the electric energy meter 10, and further used to verify whether the measurement of the electric energy meter 10 is accurate when using electricity under a constant magnetic field condition;

[0042] In the process of pressing the electric energy meter 10 into the placement slot 11, the first spring 122 will be compressed and generate stored force. In order to prevent the upper push plate 12 from being pushed up by the first spring 122 when the electric energy meter 10 is released, the first magnet 111 is arranged to be attracted to the second magnet on the bottom surface of the upper push plate 12 when in contact with the upper push plate 12, so that the upper push plate 12 will not move up after the electric energy meter 10 is released, and the first spring 122 is always in a compressed and stored force state;

[0043] The test turntable 1 is driven by a motor installed in the installation cabinet 3 to rotate intermittently. Therefore, after the electric energy meter 10 is placed in the placement slot 11 in the first loading area 5 and the second loading area 6, when the test turntable 1 drives the electric energy meter 10 to move to the test area 7, the magnetic field generator 151 works to generate a constant magnetic field to interfere with the electric energy meter 10, thereby verifying whether the electric energy meter 10 is accurate in measurement under the constant magnetic field environment;

[0044] When the calibration is completed, the electric energy meter 10 is transferred from the test area 7 to the material transfer area 8. During the movement, when the friction wheel 137 contacts the friction pad 138, the two rub against each other, thereby causing the rotating shaft 131 to automatically reverse. Since the gear 134 is connected to the rotating shaft 131 through the ratchet 133, the gear 134 will not rotate when the rotating shaft 131 reverses. Therefore, it can be prevented that the gear 134 rotates to engage the rack 123 and moves upward due to the reverse rotation of the rotating shaft 131.

[0045] When the rotating shaft 131 is reversed, the power supply and discharge device plug 14 is automatically disengaged from the terminal 101 of the electric energy meter 10, and then the friction wheel 137 is disengaged from the friction pad 138, and the end of the rack 123 is close to the upward inclined plate 139;

[0046] The material transfer turntable 2 is also driven to rotate by the motor connected to the peripheral device. The rotation speed of the material transfer turntable 2 is the same as that of the test turntable 1. At the same time, the number of fixtures on the material transfer turntable 2 is the same as the number of placement slots 11 on the test turntable 1. In this embodiment, the number of placement slots 11 is preferably four; therefore, when the test turntable 1 rotates to transfer the electric energy meter 10 in the test area 7 to the material transfer area 8, the material transfer turntable 2 is also rotating. When the electric energy meter 10 is about to reach the material transfer area 8, the end of the rack 123 contacts the upward inclined plate 139, and the upward inclined plate 139 is moved to the material transfer area 8. The inclined plate 139 will cause the rack 123 to move upward, thereby pushing the upper push plate 12 upward. At this time, the upper push plate 12 will be separated from the first magnet 111, and the upper push plate 12 will not be attracted to the first magnet 111. Then, under the thrust of the first spring 122, the upper push plate 12 will move upward quickly, and the electric energy meter 10 will bounce upward, and then be clamped by the clamp on the material transfer turntable 2. Then, the tested electric energy meter 10 will be transferred to the conveying area 4 through the material transfer turntable 2, thereby automatically completing the entire measurement accuracy verification of the electric energy meter 10 under the condition of a constant magnetic field;

[0047] At the same time, the design of this equipment reduces the use of electrical equipment, thereby reducing the failure rate and effectively improving the stability of the equipment during use;

[0048] It should be noted that a corrugated sleeve is sleeved on the first spring 122 between the bottom wall of the placement groove 11 and the bottom surface of the upper push plate 12, and the two ends of the corrugated sleeve are respectively connected to the bottom wall of the placement groove 11 and the bottom surface of the upper push plate 12, which can further prevent the first spring 122 from expanding outwards during the compression process when the upper push plate 12 squeezes the first spring 122, resulting in the first spring 122 being unable to be compressed normally;

[0049] It should also be noted that the length of the friction pad 138 is set to be sufficient to ensure that the number of turns of the reversed rotating shaft 131 meets the reset stroke of the mounting bracket 135, and there is no need to worry about the mounting bracket 135 having an error in the stroke when the mounting bracket 135 moves forward and backward.

[0050] The device, through the test turntable 1 and the material transfer turntable 2, can automatically drive the power supply and discharge device plug 14 to automatically insert into the terminal 101 of the power meter 10 when the power meter 10 is placed in the placement slot 11. After the test area 7 completes the verification, when transferring to the material transfer area 8, the power supply and discharge device plug 14 can be automatically separated from the terminal 101, and when reaching the material transfer area 8, the power meter 10 in the placement slot 11 is automatically popped up and enters the fixture on the material transfer turntable 2 to complete the material transfer operation of the verified power meter 10, so that the device is easy to operate, can realize batch verification operation, and has fewer manual operation steps. At the same time, less electrical equipment is used, which effectively reduces potential safety hazards;

[0051] In addition, the present device enables the electric energy meter 10 to have an upward elastic force and is clamped in a fixture on the material transfer turntable 2, so that during the calibration process, the electric energy meter 10 can always be facing upward, and the electric energy meter 10 will not flip over. This makes it unnecessary to flip the front and back of the electric energy meter 10 for subsequent packaging and packing operations after the material transfer is completed on the material transfer turntable 2, thereby effectively reducing the workload and improving the calibration efficiency.

[0052] Example 2: Reference Figure 1 , Figure 3 , Figure 4 , an error calibration device for an electric energy meter under a constant magnetic field condition, which is basically the same as that of Example 1, and furthermore: the fixture on the material transfer turntable 2 includes a symmetrically arranged clamping plate 23, and fixed blocks 231 are respectively arranged on both sides of the clamping plate 23, and the fixed blocks 231 are fixedly connected to the material transfer turntable 2, and a sliding rod 232 is slidably connected to the fixed block 231, and the sliding rod 232 is fixedly connected to the clamping plate 23, and a third spring 233 is sleeved on the sliding rod 232 between the clamping plate 23 and the fixed block 231, and the two ends of the third spring 233 are respectively fixedly connected to the clamping plate 23 and the fixed block 231;

[0053] One end of the clamping plate 23 away from the material transfer turntable 2 is in an outwardly turned arc shape, so that the popped-up electric energy meter 10 can be more easily clamped by the clamping plate 23.

[0054] A push rod 22 is slidably connected to the clamp on the material transfer turntable 2. The push rod 22 is connected to the upper surface of the material transfer turntable 2 through a second spring 221. The end of the push rod 22 is fixedly connected to a material stripping plate 222. The material stripping plate 222 is located on the bottom surface of the material transfer turntable 2. When the electric energy meter 10 on the material transfer turntable 2 moves to the conveying area 4, the push rod 22 automatically slides down to push the electric energy meter 10 on the clamp to the conveying area 4.

[0055] The installation cabinet 3 is fixedly connected with a second bracket 21, the material transfer turntable 2 is rotatably arranged on the second bracket 21, the second bracket 21 is fixedly connected with a third bracket 24, the third bracket 24 is fixedly connected with a downwardly inclined plate 241, the downwardly inclined plate 241 is located above the material transfer turntable 2, and the downwardly inclined plate 241 corresponds to the top rod 22;

[0056] When the clamping plate 23 holding the electric energy meter 10 approaches the downwardly inclined plate 241, the push rod 22 is pressed downward, and the clamped electric energy meter 10 is automatically pushed out from the symmetrical clamping plate 23 through the stripping plate 222;

[0057] A rotating conveyor belt may be provided in the conveying area 4, and the upper surface of the conveyor belt is close to the material transfer turntable 2, so that when the electric energy meter 10 is pushed out by the push rod 22, it falls on the conveyor belt and is transported to the next process through the conveyor belt;

[0058] The downwardly inclined plate 241 provided in the device can automatically complete the material return when the electric energy meter 10 reaches the conveying area 4 .

[0059] Example 3: Reference Fig. 9 , an error calibration device for electric energy meters under constant magnetic field conditions, which is basically the same as that of Example 2, and furthermore: an electric push rod 25 is installed at the fixture of the material transfer turntable 2, and the telescopic end of the electric push rod 25 penetrates the bottom surface of the material transfer turntable 2, and a marking stamp is installed on the telescopic end of the electric push rod 25, which is used to stamp and mark the front of the unqualified electric energy meter 10;

[0060] When the electric energy meter 10 is calibrated as unqualified in the test area 7, the electric energy meter 10 is transferred to the transfer turntable 2 through the transfer area 8, and the electric push rod 25 at the corresponding position will work, so that one end of the telescopic end pushes the marking stamp to contact the upper surface of the electric energy meter 10, marking the surface of the electric energy meter 10, making it more convenient for subsequent sorting.

[0061] Example 4: Reference Figure 1-Figure 9 , an error calibration method for an electric energy meter under a constant magnetic field condition, mainly comprising the following steps:

[0062] S1. In the first loading area 5 or the second loading area 6 on the installation cabinet 3, the electric energy meter 10 is pressed downward into the placement slot 11, and during the pressing process, the plug 14 of the power supply and discharge device is inserted into the connection terminal 101 of the electric energy meter 10;

[0063] S2, when the test turntable 1 drives the electric energy meter 10 to move to the test area 7, the magnetic field generator 151 works to generate a constant magnetic field to interfere with the electric energy meter 10, thereby verifying that the electric energy meter 10 is in a constant magnetic field environment;

[0064] S3. When the verification is completed, the electric energy meter 10 is transferred from the test area 7 to the material transfer area 8, and the plug 14 of the power supply and discharge device is automatically detached from the terminal 101 of the electric energy meter 10. Then the electric energy meter 10 pops up from the placement slot 11 and is transferred to the material transfer turntable 2 to complete the verification operation.

[0065] The present invention is provided with a test turntable 1 and a material transfer turntable 2, which can automatically drive the power supply and discharge device plug 14 to automatically insert into the terminal 101 of the power meter 10 when the power meter 10 is placed in the placement slot 11, and then after the test area 7 completes the verification, when transferring to the material transfer area 8, the power supply and discharge device plug 14 can be automatically separated from the terminal 101, and when reaching the material transfer area 8, the power meter 10 in the placement slot 11 is automatically popped up and enters the fixture on the material transfer turntable 2, completing the material transfer operation of the verified power meter 10, so that the device is easy to operate, can realize batch verification operation, and has fewer manual operation steps, and at the same time, less electrical equipment is used, which effectively reduces potential safety hazards;

[0066] In addition, the present device enables the electric energy meter 10 to have an upward elastic force and is clamped in a fixture on the material transfer turntable 2, so that during the calibration process, the electric energy meter 10 can always be facing upward, and the electric energy meter 10 will not flip over. This makes it unnecessary to flip the front and back of the electric energy meter 10 for subsequent packaging and packing operations after the material transfer is completed on the material transfer turntable 2, thereby effectively reducing the workload and improving the calibration efficiency.

[0067] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the present invention can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. An electric energy meter error calibration device under constant magnetic field conditions, comprising an installation cabinet (3), characterized in that: Also includes: The test turntable (1) and the material transfer turntable (2) arranged on the installation cabinet (3) are rotated respectively, the upper circumference of the test turntable (1) being provided with a plurality of placement slots (11) for placing the electric energy meter (10), and the bottom circumference of the material transfer turntable (2) being provided with a plurality of clamps for clamping the electric energy meter (10); A plurality of discharge and power supply device plugs (14) are arranged on the test turntable (1), the discharge and power supply device plugs (14) corresponding to the placement slots (11), When the electric energy meter (10) is placed in the placement slot (11) from the first loading area (5) or the second loading area (6), the power supply and discharge device plug (14) corresponding to the placement slot (11) automatically moves and is inserted into the connection terminal (101) of the electric energy meter (10); A magnetic field generator (151) disposed at a test area (7) of the installation cabinet (3) for generating a constant magnetic field to perform measurement verification on the electric energy meter (10); When the electric energy meter (10) in the test area (7) moves toward the material transfer area (8), the plug (14) of the power supply and discharge device automatically moves away from the terminal (101) of the electric energy meter (10), and then the electric energy meter (10) automatically pops up from the placement slot (11) and is clamped by the clamp on the material transfer turntable (2), and then the material transfer of the electric energy meter (10) after the test is completed by the rotation of the material transfer turntable (2); A connecting frame (13) is fixedly connected to the outer side of the test turntable (1) near the placement groove (11); a rotating shaft (131) is rotatably connected to the connecting frame (13); an external thread (132) is provided on the outer periphery of one end of the rotating shaft (131); a mounting frame (135) is threadedly connected to the rotating shaft (131) via the external thread (132); the power supply and discharge device plug (14) is mounted on the mounting frame (135); a guide rod (136) is fixedly connected to the outer side of the test turntable (1) near the placement groove (11); and the mounting frame (135) slides on the guide rod (136); A gear (134) is connected to the other end of the rotating shaft (131); when the electric energy meter (10) is placed in the placement slot (11), the gear (134) is automatically driven to drive the rotating shaft (131) to rotate, so that the mounting frame (135) moves on the rotating shaft (131) toward the placement slot (11); The symmetrical inner walls of the placement groove (11) are each provided with a slideway (121); an upper push plate (12) is slidably connected in the placement groove (11); both sides of the upper push plate (12) are slidably connected in the slideway (121); a rack (123) is fixedly connected to the bottom surface of the upper push plate (12); when the electric energy meter (10) is pressed downward into the placement groove (11), the upper push plate (12) moves downward so that the rack (123) engages with the gear (134) to drive the rotating shaft (131) to rotate; A friction wheel (137) is fixedly connected to the rotating shaft (131); a friction pad (138) is installed on the installation cabinet (3) between the test area (7) and the material transfer area (8); the gear (134) is connected to the rotating shaft (131) via a ratchet (133); When the electric energy meter (10) is pressed downward into the placement slot (11), the rack (123) meshes with the gear (134) and drives the rotating shaft (131) to rotate. When the test turntable (1) rotates to move the electric energy meter (10) from the test area (7) to the material transfer area (8), the friction wheel (137) contacts the friction pad (138), causing the rotating shaft (131) to reversely drive the power supply and discharge device plug (14) away from the terminal (101) of the electric energy meter (10), while the gear (134) does not rotate; The bottom of the upper push plate (12) is fixedly connected to a first spring (122), the first spring (122) is fixedly connected to the bottom surface of the placement groove (11), the bottom surface of the placement groove (11) is fixedly connected to a first magnet (111), the bottom surface of the upper push plate (12) is fixedly connected to a second magnet, and the first magnet (111) and the second magnet attract each other; It also includes an upwardly inclined plate (139) installed on the installation cabinet (3) near the material transfer area (8), and the rack (123) corresponds to the upwardly inclined plate (139). When the rack (123) passes through the upwardly inclined plate (139), the rack (123) pushes the upper push plate (12) upward to move, so that the upper push plate (12) is disengaged from the first magnet (111), and the electric energy meter (10) on the upper push plate (12) is bounced upward under the thrust of the first spring (122).

2. The error calibration device for electric energy meters under constant magnetic field conditions according to claim 1, characterized in that: The clamp on the material transfer turntable (2) comprises a symmetrically arranged clamping plate (23), and fixed blocks (231) are respectively arranged on both sides of the clamping plate (23), and the fixed blocks (231) are fixedly connected to the material transfer turntable (2), and a sliding rod (232) is slidably connected to the fixed block (231), and the sliding rod (232) is fixedly connected to the clamping plate (23), and a third spring (233) is sleeved on the sliding rod (232) between the clamping plate (23) and the fixed block (231), and the two ends of the third spring (233) are respectively fixedly connected to the clamping plate (23) and the fixed block (231).

3. The error calibration device for electric energy meters under constant magnetic field conditions according to claim 2, characterized in that: A push rod (22) is slidably connected to the clamp on the material transfer turntable (2), and the push rod (22) is connected to the upper surface of the material transfer turntable (2) via a second spring (221). A material stripping plate (222) is fixedly connected to the end of the push rod (22), and the material stripping plate (222) is located on the bottom surface of the material transfer turntable (2). When the electric energy meter (10) on the material transfer turntable (2) moves to the conveying area (4), the push rod (22) automatically slides down to push the electric energy meter (10) on the fixture to the conveying area (4).

4. The error calibration device for electric energy meters under constant magnetic field conditions according to claim 3 is characterized in that: A second bracket (21) is fixedly connected to the installation cabinet (3); the material transfer turntable (2) is rotatably arranged on the second bracket (21); a third bracket (24) is fixedly connected to the second bracket (21); a downwardly inclined plate (241) is fixedly connected to the third bracket (24); the downwardly inclined plate (241) is located above the material transfer turntable (2); and the downwardly inclined plate (241) corresponds to the top rod (22).

5. The error calibration device for electric energy meters under constant magnetic field conditions according to claim 4 is characterized in that: The material transfer turntable (2) is also equipped with an electric push rod (25) at the clamp, the telescopic end of the electric push rod (25) extending through the bottom surface of the material transfer turntable (2), and a marking stamp is installed on the telescopic end of the electric push rod (25) for stamping the front of the unqualified electric energy meter (10).

6. A method for error checking of an electric energy meter under constant magnetic field conditions, comprising the error checking device for an electric energy meter under constant magnetic field conditions as claimed in claim 5, characterized in that: The main steps include: S1. In a first loading area (5) or a second loading area (6) located on the installation cabinet (3), the electric energy meter (10) is pressed downward into the placement groove (11), and during the pressing process, the plug (14) of the power supply and discharge device is inserted into the connection terminal (101) of the electric energy meter (10); S2, when the test turntable (1) drives the electric energy meter (10) to move to the test area (7), the magnetic field generator (151) works to generate a constant magnetic field to interfere with the electric energy meter (10), thereby verifying that the electric energy meter (10) is in a constant magnetic field environment; S3. When the calibration is completed, the electric energy meter (10) is transferred from the test area (7) to the material transfer area (8), and the plug (14) of the power supply and discharge device is automatically detached from the connection terminal (101) of the electric energy meter (10). Then, the electric energy meter (10) pops up from the placement slot (11) and is transferred to the material transfer turntable (2), completing the calibration operation.

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