A tooling for correcting the error of an electricity meter

Abstract

This invention relates to the field of electricity meter testing technology and discloses an electricity meter error correction fixture, comprising a workbench with a front baffle fixedly mounted on top; a pressure plate, driven by an external force, vertically slidingly mounted at the bottom of the front baffle, with a pin plate fixedly mounted on the top of the pressure plate for mounting test probes; and a positioning assembly, driven by an external force, rotatably mounted on the top of the workbench for supporting the electricity meter; wherein the positioning assembly includes a base plate rotatably mounted on the top of the workbench, a back plate fixedly mounted on the side of the base plate near the pressure plate, and a limiting plate A and a limiting plate B fixedly mounted on the side of the base plate away from the back plate, with limiting plates A and B respectively located at opposite ends of the side of the base plate. This electricity meter error correction fixture effectively solves the problem in the prior art where it is inconvenient to pre-position the electricity meter with the test terminals.

Description

Technical Field

[0001] This invention relates to the field of electricity meter testing technology, and more specifically to an error correction fixture for electricity meters. Background Technology

[0002] When testing electricity meters using a testing device, it is necessary to manually connect the voltage and current output cables, as well as the auxiliary test signal lines such as pulses, to each meter. Connecting the upper and lower meters requires tightening screws and crimping auxiliary terminals. After testing, removing the meters also requires loosening screws and disconnecting auxiliary terminals. Manually connecting and disconnecting integrated DC meters with shunt converters takes a long time, is labor-intensive, and prone to errors, resulting in a high rate of equipment damage. Furthermore, the operator's contact with the meter's voltage and current test terminals poses a safety hazard.

[0003] In related technologies, to achieve rapid installation of electricity meters and ensure accurate wiring, for example, the patent with prior art publication number CN201909842U provides an automatic quick wiring device for testing smart electricity meters. The operation of this device is controlled by a computer according to a predetermined program. During wiring, the actuating cylinder is activated, driving the connecting bracket to move the quick wiring junction box along a linear guide rail. The height of the two guide plates in the positioning guide mechanism on both sides of the quick wiring junction box is lower than the height of the auxiliary test signal terminals. When the positioning plate and guide plate are just locked on the tail shell of the electricity meter, the guide plate does not block the voltage and current terminals and the auxiliary test signal terminals from being pressed onto the wiring position at the tail of the electricity meter for testing. After the test is completed and the wiring needs to be disconnected, the actuating cylinder is controlled to release the quick wiring junction box from the electricity meter and return it to its original position, completing the entire operation process.

[0004] Although the existing technical solutions mentioned above can achieve the effect of quickly positioning and installing the test terminals by setting up a cylinder-driven positioning and guiding mechanism to cooperate with the outer shell of the energy meter, it is not convenient to pre-position the energy meter with the positioning and guiding mechanism before the positioning plate and guide plate in the positioning and guiding mechanism are stuck on the outer shell of the energy meter. In addition, the fixed installation method of the energy meter is usually bolt pressing, which is cumbersome to operate during disassembly and fixing, thus having the drawback of not being convenient to pre-position the energy meter with the test terminals.

[0005] In view of this, we propose a tooling for correcting the error of an electricity meter. Summary of the Invention

[0006] To address the aforementioned shortcomings of existing technologies, this invention provides an energy meter error correction fixture, which effectively solves the problem of inconvenience in pre-positioning and installing the energy meter and test terminals in existing technologies.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] This invention provides an error correction fixture for electricity meters, comprising:

[0009] A workbench, with a front baffle fixedly installed above it;

[0010] The pressure plate is vertically slidably disposed at the bottom of the front baffle driven by external force, and a needle plate is fixedly disposed on the top of the pressure plate for mounting test probes;

[0011] The positioning component, driven to rotate by external force, is mounted on the top of the workbench to support the electricity meter;

[0012] The positioning component includes a base plate rotatably mounted on the top of the workbench. A back plate is fixedly mounted on the side of the base plate near the pressure plate. Limiting plate A and limiting plate B are fixedly mounted on the side of the base plate away from the back plate. Limiting plate A and limiting plate B are located at the two ends of the side of the base plate. The distance between the back plate and limiting plate A and limiting plate B is greater than the thickness of the mounting structures on both sides of the energy meter and less than the thickness of the energy meter. The distance between limiting plate A and limiting plate B is greater than the width of the energy meter and less than the width between the mounting structures on both sides of the energy meter.

[0013] The base plate automatically triggers a positioning action for the energy meter during rotation. When the base plate rotates to a horizontal state, it aligns the energy meter with the test probe at the bottom of the pressure plate.

[0014] Both sides of the back plate are provided with crimping plates corresponding to the current terminals A on both sides of the energy meter. A positioning member is fixedly provided on the outer side of one of the crimping plates. The positioning member is located on the side of the current terminal A away from the energy meter. During the rotation of the base plate driven by external force, the positioning member is triggered to push the current terminal A laterally and the crimping plate is triggered to crimp the current terminal A.

[0015] It also includes arc-shaped rods on both sides of the back plate. Sliding sleeves are slidably provided on the outer side of each arc-shaped rod. Each sliding sleeve is located on the top of the worktable. A sliding groove A is opened on the inner side of each arc-shaped rod. A sliding groove B is horizontally opened at the top of the sliding groove A. A slider is slidably provided on the inner side of each sliding groove B. The slider is fixedly connected to the pressing plate through a connecting rod.

[0016] A pressing block is fixedly provided on the inner side of the sliding sleeve. The pressing block is electrically connected to the current terminal B on the outer side of the workbench. When the sliding sleeve rotates 90° under the drive of the back plate, the pressing block pushes the slider to slide to the other end of the slide groove B, which is used to push the pressing plate to press the current terminals A on both sides of the energy meter and electrically connect it with the current terminals B.

[0017] Furthermore, when the pressing plate rotates to reset, it relies on its own weight and the pressure of the electricity meter to push the slider to reset. The back plate has a storage groove for accommodating the pressing plate on the side near the electricity meter.

[0018] Furthermore, an arc-shaped rod is fixedly provided on the side of the back plate away from the positioning member, and an arc-shaped rod is slidably provided on the other side of the back plate;

[0019] The inner side of the back plate is provided with a sliding hole B corresponding to the arc-shaped rod. A limit block is fixedly provided on the outer side of the arc-shaped rod on the side of the back plate away from the electricity meter. When the back plate rotates, the sliding sleeve automatically triggers a horizontal sliding motion to horizontally push the current terminal A to one side of the base plate.

[0020] Furthermore, a support block is fixedly provided on the top of the sliding sleeve corresponding to the limiting block, and an installation groove is provided on the side of the sliding sleeve away from the positioning component. The installation groove is correspondingly provided on both sides of the sliding groove A. An arc-shaped wedge block is slidably provided inside the installation groove. The arc-shaped wedge block is fixedly provided on the top of the workbench. An arc-shaped inclined surface is provided on the outer side of the arc-shaped rod corresponding to the arc-shaped wedge block. The arc-shaped inclined surface is located on both sides of the sliding groove A.

[0021] The sliding sleeve is horizontally slidably disposed on the top of the worktable. The worktable is equipped with a spring for driving the sliding sleeve to automatically reset. The spring is located on the side of the sliding sleeve away from the arc-shaped wedge block.

[0022] Furthermore, a main probe and an auxiliary probe are fixedly arranged on both sides of the bottom of the needle plate, and three and nine main probes and nine auxiliary probes are respectively arranged for the test end of the energy meter, and the test ends of the main probe and the auxiliary probe are elastically pressed against the test end of the energy meter.

[0023] Furthermore, the workbench, pressure plate, and positioning components are all made of bakelite as the board material.

[0024] Furthermore, the top of the workbench is provided with several positioning components, with each pair of positioning components forming a group. Several pressure plates are provided for each group of positioning components, and the several pressure plates are driven by external force to move synchronously up and down.

[0025] Furthermore, it also includes a pressing assembly for driving the pressure plate to rise and fall. The pressing assembly includes a sliding column fixedly disposed on the top of the pressure plate and a guide column slidably disposed on the inner side of the pressure plate. The guide column is fixedly disposed on the top of the worktable. A guide sleeve is slidably disposed on the outer side of the sliding column. The guide sleeve is fixedly disposed on the outer side of the front baffle. The sliding column is driven to slide and rise and fall by external force.

[0026] The technical solution provided by this invention has the following advantages compared with the prior art:

[0027] (1) The present invention is provided with a positioning component to support the energy meter. By placing the energy meter inside the positioning component, the positioning component automatically positions the energy meter during rotation. Finally, the positioned energy meter is rotated to the bottom of the needle plate. When the pressure plate is driven by an external force, it will drive the test probe carried by the needle plate to contact and connect with the detection end of the energy meter, so as to position and align the energy meter with the test terminal.

[0028] (2) The present invention can automatically release the positioning function of the energy meter by rotating the energy meter to a vertical position through the positioning component. At this time, it is convenient to take the energy meter out from the inside of the positioning component. Since the positioning component rotates the energy meter to one side of the needle plate, it prevents the needle plate from occupying the space above the energy meter, making it convenient to install and disassemble the energy meter during testing. Compared with the existing bolt pressing method, it makes the testing and calibration work more convenient. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0030] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the bottom structure of an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the structure from the main view of an embodiment of the present invention;

[0033] Figure 4 This is a side view of the structure of an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the structure of the workbench in an embodiment of the present invention;

[0035] Figure 6 This is a schematic diagram of one side of the positioning component according to an embodiment of the present invention;

[0036] Figure 7 This is a schematic diagram of the other side of the positioning component in an embodiment of the present invention;

[0037] Figure 8 This is a schematic diagram of the back structure of the positioning component according to an embodiment of the present invention;

[0038] Figure 9 This is a top view of the positioning component according to an embodiment of the present invention;

[0039] Figure 10 This is an exploded structural diagram of the positioning component according to an embodiment of the present invention;

[0040] Figure 11 This is a schematic diagram of the arc-shaped rod and the pressure plate in an embodiment of the present invention.

[0041] The labels in the diagram represent: 100, electricity meter; 101, current terminal A; 102, installation structure;

[0042] 1. Workbench; 11. Front baffle; 12. Vertical plate; 13. Horizontal plate; 14. Current terminal B; 15. Controller; 16. Control switch; 17. Insert plate; 18. Slide rail; 19. Stop block; 110. Cable strip; 111. Pad A; 112. Pad B; 113. Mounting hole; 114. Sliding hole A;

[0043] 2. Pressure plate; 21. Needle plate; 22. Main probe; 23. Auxiliary probe;

[0044] 3. Positioning assembly; 31. Base plate; 32. Back plate; 33. Limiting plate A; 34. Limiting plate B; 35. Pressing plate; 36. Positioning component; 37. Bushing; 38. Drive shaft; 39. Motor; 310. Storage slot; 311. Sliding hole B;

[0045] 4. Arc-shaped rod; 41. Sliding sleeve; 42. Slide groove A; 43. Slide groove B; 44. Sliding block; 45. Connecting rod; 46. Pressing block; 47. Limiting block; 48. Support block; 49. Mounting groove; 410. Arc-shaped wedge block; 411. Arc-shaped inclined surface; 412. Slide seat; 413. Spring;

[0046] 5. Pressing assembly; 51. Electric push rod; 52. Fixing base; 53. Connecting plate; 54. Sliding column; 55. Guide sleeve; 56. Guide post. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0048] The present invention will be further described below with reference to embodiments.

[0049] Please see Figures 1-11This invention provides a technical solution: an error correction fixture for an electricity meter, comprising a workbench 1, a pressure plate 2, and a positioning component 3. A front baffle 11 is fixedly disposed above the workbench 1. The pressure plate 2 is vertically slidably disposed at the bottom of the front baffle 11 driven by an external force. A needle plate 21 is fixedly disposed at the top of the pressure plate 2 for mounting test probes. The positioning component 3 is rotatably disposed at the top of the workbench 1 for supporting the electricity meter 100. The positioning component 3 includes a base plate 31 rotatably disposed at the top of the workbench 1. A back plate 32 is fixedly disposed on the side of the base plate 31 near the pressure plate 2. A limiting plate A33 and a limiting plate B34 are fixedly disposed on the side of the base plate 31 away from the back plate 32. The limiting plates A33 and B34 are respectively located at the two ends of the side of the base plate 31. During the rotation of the base plate 31, the positioning action of the electricity meter 100 is automatically triggered. When the base plate 31 rotates to a horizontal state, it drives the electricity meter 100 to align with the test probes at the bottom of the pressure plate 2.

[0050] When testing the energy meter 100, the energy meter 100 is placed inside the positioning component 3, which automatically positions the energy meter 100 during rotation. The positioned energy meter 100 is then rotated to a position below the needle plate 21. When the pressure plate 2 is driven by an external force, the test probe carried by the needle plate 21 contacts and connects with the detection end of the energy meter 100, facilitating the alignment of the energy meter 100 with the test terminal. After testing, the positioning component 3 rotates the energy meter 100 to a vertical position, automatically releasing the positioning function. This allows the energy meter 100 to be easily removed from inside the positioning component 3. Because the positioning component 3 rotates the energy meter 100 to one side of the needle plate 21, it prevents the needle plate 21 from occupying the space above the energy meter 100, facilitating installation and removal of the energy meter 100 during testing. Compared to existing bolt-fitting methods, this makes testing and calibration more convenient. Specifically, when placing the electricity meter 100, because the distance between the back plate 32 and the limiting plates A33 and B34 is greater than the thickness of the mounting structures 102 on both sides of the electricity meter 100 but less than the thickness of the electricity meter 100, and the distance between the limiting plates A33 and B34 is greater than the width of the electricity meter 100 but less than the width between the mounting structures 102 on both sides of the electricity meter 100, after the electricity meter 100 is placed on top of the base plate 31, the electricity meter 100... The mounting structures 102 on both sides are located between the back plate 32 and the limiting plates A33 and B34, while the outer casing of the electricity meter 100 is located between the limiting plates A33 and B34. This allows the limiting plates A33 and B34 to limit the mounting structure 102 in the front and back, and the limiting plates A33 or B34 to limit the external force on the electricity meter 100 in the left and right. Compared with the traditional front and back clamping, this limiting structure is simpler and easier to operate.

[0051] In actual testing, main probes 22 and auxiliary probes 23 are fixedly installed on both sides of the bottom of the needle plate 21. Three main probes 22 and nine auxiliary probes 23 are respectively installed on the test terminals of the energy meter 100, and the test terminals of both main probes 22 and auxiliary probes 23 are elastically pressed against the test terminals of the energy meter 100. The workbench 1, pressure plate 2, and positioning assembly 3 are all made of bakelite, which is non-absorbent, non-conductive, heat-resistant, and high-strength, and is widely used in electrical products. A set of test probes corresponding to one energy meter 100 consists of three main probes 22 and nine auxiliary probes 23. Each set of probes is connected as follows: when the pressure plate 2 moves the needle plate 21 downwards, it connects to the energy meter 100's multi-function output D+ terminal, multi-function output D- terminal, pulse output P terminal, clock pulse output T terminal, common ground G terminal, 1 RS485 communication A terminal, 1 RS485 communication B terminal, 2 RS485 communication A terminals, and 2 RS485 communication B terminals. Nine auxiliary probes 23 that are in contact with the B terminal of the communication device, and three main probes 22 that are in contact with the voltage U+ and voltage U- terminals of the energy meter 100, are respectively connected to the plug plate 17 on the top of the workbench 1 via wires. When the pressure plate is pressed down, they are respectively pressed into the voltage + and voltage - terminals of the energy meter 100, as well as the multi-function terminals D+, D-, pulse output P+, clock pulse output T+, common ground G, 1 RS485 communication A, 1 RS485 communication B, 2 RS485 communication A, and 2 RS485 communication B. The sockets on the plug plate 17 are used to connect the multi-function communication terminal and voltage output terminal of the test bench body via the cable strip 110.

[0052] To facilitate the front-back and left-right positioning of the energy meter 100 on the top of the base plate 31, pressure plates 35 are provided on both sides of the back plate 32 corresponding to the current terminals A101 on both sides of the energy meter 100. A positioning member 36 is fixedly installed on the outer side of one of the pressure plates 35, located on the side of the current terminal A101 furthest from the energy meter 100. During the rotation of the base plate 31 driven by external force, the positioning member 36 sequentially pushes the current terminal A101 laterally, and the pressure plate 35 presses the current terminal A101. Specifically, a bushing 37 is fixedly installed on the outer side of the base plate 31, and a drive shaft 38 is fixedly installed inside the bushing 37. The drive shaft 38 is rotatably mounted on the top of the worktable 1, and a motor 39 for driving the drive shaft 38 is fixedly installed on the outer side of the worktable 1.

[0053] After the energy meter 100 is placed on top of the base plate 31, the drive shaft 38 is driven to rotate by the motor 39. The drive shaft 38 drives the base plate 31 to rotate on the top of the workbench 1 through the bushing 37. The base plate 31 drives the energy meter 100 to rotate 90°. During the rotation, the positioning part 36 and the pressing plate 35 on one side of the back plate 32 trigger horizontal pushing and front and back pressing actions in turn, so that the energy meter 100 is automatically positioned before it is aligned with the test probe at the bottom of the needle plate 21. This positioning structure is simpler and more compact.

[0054] To achieve the pressing and positioning effect of the pressing plate 35 on the current terminals A101, specifically, it also includes arc-shaped rods 4 on both sides of the back plate 32. Sliding sleeves 41 are slidably arranged on the outer side of the arc-shaped rods 4. The sliding sleeves 41 are all located on the top of the workbench 1. Sliding grooves A42 are opened on the inner side of the arc-shaped rods 4. Sliding grooves B43 are horizontally opened at the top of the sliding grooves A42. Sliding sliders 44 are slidably arranged on the inner side of the sliding grooves B43. The sliding sliders 44 are fixedly connected to the pressing plate 35 through connecting rods 45. A pressing block 46 is fixedly arranged on the inner side of the sliding sleeve 41. The pressing block 46 is electrically connected to the current terminals B14 on the outer side of the workbench 1. When the sliding sleeve 41 rotates 90° under the drive of the back plate 32, the pressing block 46 pushes the sliding slider 44 to slide to the other end of the sliding groove B43, which is used to push the pressing plate 35 to press the current terminals A101 on both sides of the energy meter 100 and electrically connect them with the current terminals B14.

[0055] When the back plate 32 rotates under the drive of the base plate 31, the back plate 32 drives the arc-shaped rods 4 on both sides to slide inside the sliding sleeve 41. The arc-shaped rods 4 and the sliding sleeve 41 are both concentrically set with the drive shaft 38. When the arc-shaped rods 4 drive the slider 44 inside the sliding groove A42 to reach the top of the pressing block 46 inside the sliding sleeve 41, the pressing block 46 pushes the slider 44 to slide along the sliding groove B43. Then, through the connecting rod 45, it pushes the pressing plate 35 closer to the current terminal A101 until the slider 44 slides to the other end of the sliding groove B43. At this point, the base plate 31 drives the energy meter 100 from a vertical position. The device rotates to a horizontal position, automatically aligning the energy meter 100 with the test probe above. At this time, the energy meter 100 remains stable under the support of the crimping plate 35. The crimping plate 35 remains stable under the support of the crimping block 46 via the connecting rod 45 and the slider 44. The crimping block 46 is electrically connected to the current terminal B14 on the outside of the workbench 1. The crimping block 46 is electrically connected to the crimping plate 35 via the slider 44 and the connecting rod 45, so that the energy meter 100 can be automatically connected to the test circuit after being aligned with the test probe. The current terminal B14 is used as the current output terminal for connecting the test bench body.

[0056] When the base plate 31 is reversed and reset, the back plate 32 drives the arc rod 4 to slide upward inside the sliding sleeve 41. At this time, when the pressing plate 35 is rotated and reset, it pushes the slider 44 to reset by its own weight and the pressure of the energy meter 100. The back plate 32 has a storage groove 310 for accommodating the pressing plate 35 on the side close to the energy meter 100, so as to ensure that the energy meter 100 is smoothly placed between the back plate 32 and the limiting plate A33, and automatically releases the positioning function by its own weight and the thrust of the energy meter 100, simplifying the operation process.

[0057] In order to achieve left and right positioning of the energy meter 100 before the pressing plate 35 presses the current terminal A101, an arc-shaped rod 4 is fixedly provided on the side of the back plate 32 away from the positioning member 36, and an arc-shaped rod 4 is slidably provided on the other side of the back plate 32; a sliding hole B311 is opened on the inner side of the back plate 32 corresponding to the arc-shaped rod 4, and a limit block 47 is fixedly provided on the outer side of the arc-shaped rod 4 on the side of the back plate 32 away from the energy meter 100. When the back plate 32 rotates, the sliding sleeve 41 automatically triggers a horizontal sliding motion to horizontally push the current terminal A101 to one side of the base plate 31. Specifically, a support block 48 is fixedly installed on the top of the sliding sleeve 41 corresponding to the limiting block 47. An installation groove 49 is opened on the side of the sliding sleeve 41 away from the positioning component 3. The installation groove 49 is opened on both sides of the sliding groove A42. An arc-shaped wedge block 410 is slidably installed inside the installation groove 49. The arc-shaped wedge block 410 is fixedly installed on the top of the worktable 1. An arc-shaped inclined surface 411 is provided on the outer side of the arc-shaped rod 4 corresponding to the arc-shaped wedge block 410. The arc-shaped inclined surface 411 is located on both sides of the sliding groove A42. The sliding sleeve 41 is horizontally slidably installed on the top of the worktable 1. A spring 413 is installed inside the worktable 1 to drive the sliding sleeve 41 to automatically reset. The spring 413 is located on the side of the sliding sleeve 41 away from the arc-shaped wedge block 410.

[0058] When the back plate 32 drives the two arc-shaped rods 4 to slide inside the sliding sleeve 41, the arc-shaped inclined surface 411 on the outer side of one of the arc-shaped rods 4 first engages with the arc-shaped wedge block 410. Under the squeezing action of the arc-shaped wedge block 410, the arc-shaped rod 4 moves towards the side closer to the energy meter 100. This causes the arc-shaped rod 4 to drive the sliding sleeve 41 to slide horizontally along the sliding hole A114 at the top of the workbench 1. As the sliding sleeve 41 slides, it compresses the spring 413 and simultaneously drives the arc-shaped rod 4 to slide through the hole. B311 slides inward, using the arc-shaped rod 4 to drive the inner connecting rod 45 towards the side of the energy meter 100. The connecting rod 45 then drives the positioning component 36 towards the outside of the current terminal A101, ultimately pushing the current terminal A101 to press the energy meter 100 against one side of the base plate 31. To ensure that after the positioning component 36 is positioned left and right on the energy meter 100, the subsequent pressing plate 35 can smoothly press the current terminal A101, the positioning component 36 is made of ceramic. The ceramic material is used to make rods or plates. While ensuring insulation, the surface is smoother, reducing the resistance when the current terminal A101 is pressed and moved. The top of the workbench 1 not only has a sliding hole A114 for sliding sleeve 41, but also a mounting hole 113 for fixing another sliding sleeve 41. A sliding seat 412 is fixedly installed on the outside of the sliding sleeve 41. The sliding seat 412 is slidably installed on the outside of the slide rail 18. The slide rail 18 is fixedly installed inside the workbench 1. A spring 413 is fixedly installed on the outside of the sliding seat 412. A stop block 19 is fixedly installed on the outside of the slide rail 18 at the other end of the spring 413. A controller 15 is also fixedly installed inside the workbench 1. The controller 15 is electrically connected to the control switch 16 on the outside of the workbench 1 to control the rotation of the positioning component 3. The top of the workbench 1 has pads A111 and B112 fixedly installed on the bottom plate 31 and back plate 32, respectively, to support the positioning component 3 so that the energy meter 100 is in a vertical or horizontal state.

[0059] The top of the workbench 1 is provided with several positioning components 3, with two positioning components 3 forming a group. Several pressure plates 2 are provided for each group of positioning components 3, and the pressure plates 2 are driven to move synchronously up and down by external force. It also includes a pressing component 5 for driving the pressure plates 2 to move up and down. The pressing component 5 includes a sliding column 54 fixedly set on the top of the pressure plate 2 and a guide column 56 slidably set on the inner side of the pressure plate 2. The guide column 56 is fixedly set on the top of the workbench 1. A guide sleeve 55 is slidably set on the outer side of the sliding column 54. The guide sleeve 55 is fixedly set on the outer side of the front baffle 11. A connecting plate 53 is fixedly set on the top of the sliding column 54. The connecting plate 53 is fixedly installed on the driving end of the electric push rod 51. The electric push rod 51 is fixedly set on the outer side of the front baffle 11 through a fixed seat 52. The front baffle 11 is fixedly set above the workbench 1 through vertical plates 12 on both sides. A horizontal plate 13 for installing the guide column 56 is also fixedly set between the vertical plates 12 on both sides.

[0060] After the energy meter 100 is placed on top of the base plate 31, the test is started with one key by the control switch 16 on the outside of the workbench 1. The controller 15 inside the workbench 1 first controls the motor 39 to run and position and align the energy meter 100. Then, it controls the electric push rod 51 to drive the connecting plate 53 to move downward, so that the connecting plate 53 pushes the slide column 54 to slide inside the guide sleeve 55. In turn, the slide column 54 pushes the pressure plate 2 to slide along the guide column 56. The pressure plate 2 drives the test probe at the bottom of the needle plate 21 to approach the test end at the top of the energy meter 100 and presses it elastically, so as to connect the energy meter 100 to the test bench for testing and calibration.

[0061] The principle and advantages of the electricity meter error correction fixture:

[0062] First, the tooling is adjusted to its initial state. In this initial state, the base plate 31 on top of the workbench 1 is horizontal, supporting the energy meter 100, and the electric push rod 51 drives the pressure plate 2 to its highest position. Then, the energy meter 100 is placed on top of the base plate 31. Since the distance between the back plate 32 and the limiting plates A33 and B34 is greater than the thickness of the mounting structures 102 on both sides of the energy meter 100 but less than the thickness of the energy meter 100, and the distance between the limiting plates A33 and B34 is greater than the width of the energy meter 100 but less than the width between the mounting structures 102 on both sides of the energy meter 100, after the energy meter 100 is placed on top of the base plate 31, the mounting structures 102 on both sides of the energy meter 100 are located on the back plate. Between limit plate A33 and limit plate B34, the outer casing of the energy meter 100 is located between limit plate A33 and limit plate B34. Then, the test is started by one key through the control switch 16 on the outside of the workbench 1. The controller 15 inside the workbench 1 first controls the motor 39 to run and drive the base plate 31 to rotate. During the rotation, the positioning action is automatically triggered to position and fix the energy meter 100. Then, the electric push rod 51 is controlled to drive the connecting plate 53 to move downward, so that the connecting plate 53 pushes the slide column 54 to slide inside the guide sleeve 55. Then, the slide column 54 pushes the pressure plate 2 to slide along the guide column 56. Through the pressure plate 2, the test probe at the bottom of the needle plate 21 moves closer to the test end at the top of the energy meter 100 and is elastically pressed.

[0063] Its advantages include: by placing the energy meter 100 inside the positioning component 3, the positioning component 3 automatically positions the energy meter 100 during rotation. Finally, the positioned energy meter 100 is rotated to the underside of the needle plate 21. When the pressure plate 2 is driven by an external force, it will cause the test probe carried by the needle plate 21 to contact and connect with the detection end of the energy meter 100, so as to position and align the energy meter 100 with the test terminal. After the test, the positioning component 3 can automatically release the positioning function of the energy meter 100 by rotating the energy meter 100 to a vertical position. At this time, it is easy to remove the energy meter 100 from the inside of the positioning component 3. Since the positioning component 3 rotates the energy meter 100 to one side of the needle plate 21, it prevents the needle plate 21 from occupying the space above the energy meter 100, which facilitates the installation and removal of the energy meter 100 during testing. Compared with the existing bolt-fitting method, this makes the testing and calibration work more convenient.

[0064] In this application, the positioning component 3 of the electricity meter error correction fixture, when positioning and fixing the electricity meter 100, firstly, when the base plate 31 drives the back plate 32 to rotate, the back plate 32 drives the arc-shaped rods 4 on both sides to slide inside the sliding sleeve 41. The arc-shaped inclined surface 411 on the outer side of one of the arc-shaped rods 4 first cooperates with the arc-shaped wedge block 410. Under the squeezing action of the arc-shaped wedge block 410, the arc-shaped rod 4 moves towards the side closer to the electricity meter 100, thereby causing the arc-shaped rod 4 to drive the sliding sleeve 41 to slide horizontally along the sliding hole A114 at the top of the workbench 1. When the sliding sleeve 41 slides, it compresses the spring 413, and at the same time drives the inner side of the arc-shaped rod 4-shaped sliding hole B311 to slide. The arc-shaped rod 4 drives the inner connecting rod 45 to move closer to the side of the energy meter 100. The connecting rod 45 drives the positioning part 36 to move closer to the outside of the current terminal A101. Finally, by pushing the current terminal A101, the energy meter 100 is pressed against the side of the base plate 31. At this time, the sliding seat 412 on the outside of the sliding sleeve 41 is in a compressed state against the spring 413. When the arc-shaped rod 4 slides back to reset, it can automatically reset.

[0065] When the outer curved slope 411 of the curved rod 4 passes the curved wedge block 410, as the curved rod 4 continues to slide, when the curved rod 4 drives the slider 44 inside the slide groove A42 to reach the top of the pressing block 46 inside the slide sleeve 41, the pressing block 46 pushes the slider 44 to slide along the slide groove B43 under the action of the pressing block 46, and then pushes the pressing plate 35 closer to the current terminal A101 through the connecting rod 45, until the slider 44 slides to the other end of the slide groove B43, the base plate 31 drives the energy meter 100 from a vertical position. The device is rotated to a horizontal position, so that the energy meter 100 automatically aligns with the test probe above. At this time, the energy meter 100 remains stable under the support of the crimping plate 35. The crimping plate 35 is also stable under the support of the crimping block 46 through the connecting rod 45 and the slider 44. The crimping block 46 is electrically connected to the current terminal B14 on the outside of the workbench 1. The crimping block 46 is electrically connected to the crimping plate 35 through the slider 44 and the connecting rod 45, so that the energy meter 100 can be automatically connected to the test circuit after being aligned with the test probe.

[0066] After the test is completed, the base plate 31 is driven by the motor 39 to reverse and reset. The back plate 32 drives the arc rod 4 to slide upward inside the sliding sleeve 41. At this time, when the pressing plate 35 is rotated and reset, it pushes the slider 44 to reset by its own weight and the pressure of the energy meter 100. The back plate 32 has a storage groove 310 for accommodating the pressing plate 35 on the side close to the energy meter 100, so as to ensure that the energy meter 100 is smoothly placed between the back plate 32 and the limiting plate A33, and automatically releases the positioning function by its own weight and the pushing force of the energy meter 100.

[0067] It is worth noting that the above positioning and fixing method has the following advantages:

[0068] Advantage 1: By setting an arc-shaped inclined surface 411 on the outside of the arc-shaped rod 4 and cooperating with the arc-shaped wedge block 410 on the top of the workbench 1, the arc-shaped rod 4 slides under the drive of the back plate 32, and at the same time moves closer to the energy meter 100 under the action of the arc-shaped wedge block 410. This allows the arc-shaped rod 4 to drive the positioning member 36 to horizontally push the current terminal A101 to position the energy meter 100 left and right. The structure is simple and compact, making the left and right positioning operation of the energy meter 100 more convenient. Furthermore, setting the contact surface between the positioning member 36 and the current terminal A101 to be a smooth surface helps to reduce the resistance when the current terminal A101 is pressed and moved laterally.

[0069] Secondly, by providing a horizontally opening groove B43 on the inner side of the groove A42 as a guide structure for the pressing plate 35, when the slider 44 contacts the pressing block 46, as the arc rod 4 continues to slide, the slider 44 and the arc rod 4 slide relative to each other, thereby causing the slider 44 to push the pressing plate 35 closer to the current terminal A101 through the connecting rod 45, until the energy meter 100 is pressed against the outside of the limiting plate A33 and the limiting plate B34. Furthermore, the pressing block 46 is electrically connected to the pressing plate 35 through the slider 44 and the connecting rod 45, so that the energy meter 100 can be automatically connected to the test circuit after being aligned with the test probe.

[0070] Thirdly, when the test is completed, the base plate 31 drives the back plate 32 to rotate. When the pressing plate 35 rotates and resets, it pushes the slider 44 to reset by its own weight and the pressure of the energy meter 100. Then, it automatically releases the positioning function by its own weight and the thrust of the energy meter 100.

[0071] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An error correction tool for an electric energy meter, characterized in that, The utility model relates to an electric energy meter testing device, including: a workbench is provided with a front baffle fixedly above; a pressing plate is vertically slidably arranged at the bottom of the front baffle and is driven by external force, the top of the pressing plate is fixedly provided with a needle plate for installing test probes; a positioning assembly is rotatably arranged on the top of the workbench and is used for carrying an electric energy meter; wherein the positioning assembly comprises a bottom plate rotatably arranged on the top of the workbench, a back plate is fixedly arranged on the side of the bottom plate close to the pressing plate, limit plates A and B are fixedly arranged on the side of the bottom plate away from the back plate, the limit plates A and B are respectively located at both ends of the side of the bottom plate, the distance between the back plate and the limit plates A and B is greater than the thickness of the mounting structure on both sides of the electric energy meter and is less than the thickness of the electric energy meter, the distance between the limit plates A and B is greater than the width of the electric energy meter and is less than the width between the mounting structures on both sides of the electric energy meter; the positioning action of the electric energy meter is automatically triggered during the rotation of the bottom plate, and the test probes on the bottom of the pressing plate are aligned with the electric energy meter when the bottom plate rotates to the horizontal state; current terminals A corresponding to both sides of the electric energy meter are provided with pressing plates on both sides of the back plate, one side of the pressing plate is fixedly provided with a positioning piece outside, the positioning piece is located on the side of the current terminal A away from the electric energy meter, and the positioning piece and the pressing plate trigger the horizontal pushing action and the pressing action of the current terminal A during the rotation of the bottom plate driven by external force; further comprising arc-shaped rods arranged on both sides of the back plate, the arc-shaped rods are slidably arranged outside the sliding sleeves, the sliding sleeves are arranged on the top of the workbench, the arc-shaped rods are provided with sliding grooves A inside, the sliding grooves A are provided with sliding grooves B horizontally at the top, the sliding grooves B are slidably provided with sliding blocks inside, and the sliding blocks are fixedly connected with the pressing plates through connecting rods; the sliding sleeves are fixedly provided with pressing blocks inside, the pressing blocks are electrically connected with current terminals B outside the workbench, and when the sliding sleeves rotate 90 DEG under the drive of the back plate, the pressing blocks push the sliding blocks to slide to the other end of the sliding grooves B, so that the pressing plates push the current terminals A on both sides of the electric energy meter to be pressed and are electrically connected with the current terminals B.

2. The error correction tool for electric energy meter according to claim 1, characterized in that, When the pressing plates rotate and reset, the sliding blocks are reset by the gravity of the pressing plates and the pressure of the electric energy meter, and the side of the back plate close to the electric energy meter is provided with a receiving groove for accommodating the pressing plates.

3. The error correction tool for an electric energy meter according to claim 1, characterized in that, the side of the back plate away from the positioning piece is fixedly provided with an arc-shaped rod, and the other side of the back plate is slidably provided with an arc-shaped rod; the back plate is provided with a sliding hole B inside corresponding to the arc-shaped rods, the arc-shaped rods are fixedly provided with limit blocks outside on the side of the back plate away from the electric energy meter, and the sliding sleeves automatically trigger horizontal sliding motion when the back plate rotates, so as to horizontally push the current terminals A to move to one side of the bottom plate.

4. The error correction tool for an electric energy meter according to claim 2, characterized in that, The support block is fixedly arranged on the top of the limiting block corresponding to the sliding sleeve, the mounting groove is arranged on the side of the sliding sleeve away from the positioning assembly, the mounting groove is arranged on the two sides of the sliding groove A, the arc-shaped wedge block is arranged in the mounting groove, the arc-shaped wedge block is fixedly arranged on the top of the workbench, the arc-shaped slope is arranged on the outer side of the arc-shaped rod corresponding to the arc-shaped wedge block, and the arc-shaped slope is located on the two sides of the sliding groove A. The sliding sleeve is horizontally arranged on the top of the workbench, the spring for driving the automatic reset of the sliding sleeve is arranged in the workbench, and the spring is located on the side of the sliding sleeve away from the arc-shaped wedge block.

5. The error correction tool for an electric energy meter according to claim 1, characterized in that, The main probe and the auxiliary probe are fixedly arranged on the two sides of the bottom of the needle plate, the main probe and the auxiliary probe are provided with three and nine test ends corresponding to the test ends of the electric energy meter respectively, and the test ends of the main probe and the auxiliary probe are elastically pressed against the test ends of the electric energy meter.

6. The error correction tool for an electric energy meter according to claim 1, characterized in that, The workbench, the pressing plate and the positioning assembly are made of bakelite as the plate material.

7. The error correction tool for an electric energy meter according to claim 4, characterized in that, The workbench is provided with a plurality of positioning assemblies on the top, every two positioning assemblies form a group, the pressing plate is provided with a plurality of positioning assemblies corresponding to each group of positioning assemblies, and the plurality of pressing plates are driven to move up and down synchronously by external force.

8. The error correction tool for an electric energy meter according to claim 7, characterized in that, The lower pressing assembly for driving the pressing plate to move up and down includes a sliding column fixedly arranged on the top of the pressing plate and a guide column slidingly arranged in the inner side of the pressing plate, the guide column is fixedly arranged on the top of the workbench, the sliding column is slidingly arranged with a guide sleeve on the outer side, the guide sleeve is fixedly arranged on the outer side of the front baffle, and the sliding column is driven to move up and down by external force.

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