Double-layer double-wire electric energy meter calibrating device

Abstract

The invention relates to the field of electric energy meters, and discloses a double-layer double-wire electric energy meter calibrating device which comprises a main rack, and a limiting seat is arranged on the outer side of the main rack. The device comprises a main frame, a plurality of calibration line groups, the calibration line groups are arranged on the main frame, each calibration line group comprises two groups of single-side calibration lines which are symmetrically arranged on the main frame, the number of the calibration line groups is two, and one calibration line group is located above the other calibration line group; high-flux parallel verification of the electric energy meter is realized through the upper and lower layers of verification line groups which operate independently and synchronously and the symmetrically arranged single-side verification lines, and the overall operation efficiency is greatly improved; according to the jacking positioning assembly, the stability and the positioning precision in the jacking process are ensured through precise matching of a guide shaft and a linear bearing and combined guiding of a tray positioning column and a positioning pin.

Description

Technical Field

[0001] This invention relates to the field of electricity meters, and in particular to a calibration device for a double-layer, double-wire electricity meter. Background Technology

[0002] As a key device for electricity metering, the accuracy of electricity meters directly affects the fairness of trade settlement and the effectiveness of power resource management. Therefore, before being put into use, electricity meters must undergo rigorous metering performance verification and parameter testing in accordance with relevant national or industry verification procedures to ensure that they meet legal standards.

[0003] In recent years, with the continuous advancement of smart grid construction and the rapid growth of electricity demand, the number of installed electricity meters has increased dramatically, leading to a significant expansion in the scale of electricity meters awaiting inspection. Currently, most verification agencies still rely primarily on manual operation to complete processes such as meter wiring, parameter setting, error detection, data recording, and result judgment. This method suffers from high labor intensity, poor operational consistency, and susceptibility to human error, severely restricting verification efficiency and reliability. Furthermore, manual meter inspection is ill-suited to the demands of large-scale, high-frequency inspections, becoming a bottleneck restricting the improvement of electricity metering verification efficiency. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is that the current electricity meter verification process is highly dependent on manual operation, which has bottlenecks such as low efficiency, poor consistency and easy introduction of human error, making it difficult to meet the needs of large-scale meter verification.

[0005] The above-mentioned technical problems are solved by the following technical solution: This invention proposes a double-layer double-wire energy meter calibration device, which includes, A main frame, wherein a limiting seat is provided on the outer side of the main frame; The calibration line group is arranged on the main frame, and the calibration line group consists of two sets of single-sided calibration lines symmetrically arranged on the main frame. The calibration line group is configured as two groups, with one group of calibration lines located above the other group of calibration lines. The single-sided calibration line includes a horizontal conveyor line, a tray, a lifting and positioning component, and a pressing and testing component. The horizontal conveyor line is installed on the main frame, the tray is slidably disposed on the horizontal conveyor line, and the lifting and positioning component and the pressing and testing component are adapted to be installed inside the main frame. The lifting and positioning component is used to lift and precisely position the tray and energy meter at the inspection station to a predetermined height. The crimping detection component is used for electrical parameter verification; Specifically, the energy meter to be tested is carried on the tray and transported to the predetermined testing station via the horizontal conveyor line. Subsequently, the lifting and positioning assembly is activated, lifting the tray along with the energy meter, detaching it from the horizontal conveyor line and precisely positioning it at the testing height. Next, the crimping and testing assembly extends horizontally, ensuring its testing pins reliably contact the terminals of the energy meter for electrical parameter verification. After verification, all components are reset in reverse order, and the horizontal conveyor line transports the verified energy meter out of the station. The upper and lower testing lines can operate independently and synchronously, significantly improving testing efficiency.

[0006] In a preferred embodiment of the double-layer double-wire energy meter calibration device of the present invention: an extension lug is fixedly connected to the outer side of the tray, a horizontal hole is opened at the end of the extension lug away from the tray, and a positioning hole is provided at the bottom of the tray; the extension lug is used to suspend the tray on the horizontal conveyor line for conveying, and cooperates with the limiting seat during the lifting process to achieve precise positioning in the height direction; the horizontal hole and the positioning hole are respectively used to cooperate with the limiting rod and the tray positioning column to achieve dual positioning constraints in the horizontal and vertical directions.

[0007] In a preferred embodiment of the double-layer double-wire energy meter calibration device of the present invention: the lifting and positioning assembly includes a lifting and positioning cylinder, a lifting and positioning plate fixedly connected to the output end of the lifting and positioning cylinder, a tray positioning column disposed at the top of the lifting and positioning plate, a bearing mounting plate fixedly connected to the main frame, a floating joint connected between the output end of the lifting and positioning cylinder and the lifting and positioning plate, a guide shaft whose upper end is fixed to the lifting and positioning plate, and a linear bearing that slides with the guide shaft. The linear bearing is fixedly installed on the bearing mounting plate, and the cylinder body of the lifting and positioning cylinder is fixed relative to the bearing mounting plate. Specifically, the lifting and positioning cylinder drives the lifting and positioning plate to move vertically through the floating joint. The sliding fit between the guide shaft and the linear bearing provides precise guidance for the lifting process, ensuring smooth movement. During the lifting process, the pallet positioning pin is inserted into the positioning hole at the bottom of the pallet to achieve precise positioning on the horizontal plane and lift the pallet and the electricity meter to a predetermined height, so that the extended hanging lug contacts the limiting seat, completing the final positioning.

[0008] In a preferred embodiment of the double-layer double-wire energy meter calibration device of the present invention: the crimping detection assembly includes a crimping detection cylinder, a detection support fixedly connected to the output end of the crimping detection cylinder, a plurality of detection pins disposed on the detection support and corresponding one-to-one with the energy meter terminals, a crimping detection frame fixedly connected to the main frame, and a guide rod fixedly connected to the main frame. The crimping detection frame is slidably connected to the guide rod, the detection support is fixedly connected to the crimping detection frame, and the cylinder body of the crimping detection cylinder is fixed to the main frame. Specifically, the crimping test cylinder drives the crimping test frame to slide horizontally along the guide rod, thereby causing the test tray and the test pin to move synchronously; when the tray is lifted and positioned, the crimping test cylinder is activated, pushing the test pin to extend horizontally, accurately inserting it into the terminal hole of the energy meter and making reliable contact with it, thereby performing power-on testing and electrical parameter acquisition.

[0009] In a preferred embodiment of the double-layer double-wire energy meter calibration device of the present invention: a limit rod is provided on the outer side of the main frame, and a limit pin is provided inside the limit seat; Specifically, when the tray is not correctly lifted into position, the limiting pin will restrict the movement range of the limiting rod, thereby physically preventing the crimping detection assembly from advancing further and effectively preventing the detection pin from being damaged due to excessive travel. Only after the tray is correctly positioned will the protection mechanism be unlocked, allowing the crimping detection process to proceed normally.

[0010] In a preferred embodiment of the double-layer double-wire energy meter calibration device of the present invention: the limiting rod includes a fixed seat fixedly connected to the outside of the main frame, a crossbar slidably connected to the fixed seat, and a spring sleeved on the outside of the crossbar; one end of the spring is connected to the limiting seat, the other end of the spring is connected to the fixed seat, and the crossbar is slidably disposed with respect to the limiting seat; Specifically, the spring provides restoring elasticity to the crossbar. When the detection bracket of the crimping detection assembly pushes the inner limit end of the crossbar, the crossbar compresses the spring and slides inward. If the protection mechanism is not released, i.e., the limit pin is not lifted, the movement of the crossbar will be quickly blocked by the limit pin, thereby limiting the stroke of the detection bracket. If the protection mechanism is released, the crossbar will be inserted into the horizontal hole.

[0011] In a preferred embodiment of the double-layer double-wire energy meter calibration device of the present invention: the limiting pin includes an upper pin slidably disposed inside the limiting seat, a connecting rod fixedly connected to the bottom end of the upper pin, a top pin fixedly connected to one side of the bottom end of the connecting rod, and a locking pin fixedly connected to the other side of the bottom end of the connecting rod; the connecting rod slides inside the limiting seat. Specifically, when the tray rises to its position, the top of its extended lug presses the top pin upward, causing the locking pin to disengage from the movement path of the crossbar via the connecting rod. This process releases the movement restriction on the limiting rod, allowing the crimping detection process to proceed normally.

[0012] In a preferred embodiment of the double-layer double-wire energy meter calibration device of the present invention: at least two sets of tray positioning posts are fixedly connected to the top ends of positioning pins, the positioning pins are coaxially arranged with the tray positioning posts, the diameter of the positioning pins is smaller than the diameter of the tray positioning posts, and the upper end of the positioning pins is hemispherical; the hemispherical upper end of the positioning pins is designed to make it easier to be inserted into the positioning hole at the bottom of the tray, playing a preliminary guiding role and reducing the requirement for initial positioning accuracy; then the tray positioning posts with larger diameters enter the positioning holes to achieve final tight fit and precise positioning.

[0013] In a preferred embodiment of the double-layer double-line energy meter calibration device of the present invention: the horizontal conveyor line consists of two sets of parallel conveyor tracks, and the tray is slidably mounted on the conveyor tracks via the extended hanging ears; the extended hanging ears are mounted on the parallel conveyor tracks, so that the tray is suspended between the two tracks; this structure not only ensures the smoothness of tray conveying, but also uses the tracks to laterally constrain the tray, effectively preventing shaking and jamming during the conveying process, and ensuring that the energy meter can be accurately conveyed to the predetermined work position.

[0014] In a preferred embodiment of the double-layer double-wire energy meter calibration device of the present invention: a foot cup mounting plate is provided at the bottom of the main frame, and a support foot cup is threadedly connected to the bottom of the foot cup mounting plate. The bottom surface of the support foot cup is horizontal. By rotating each of the support foot cups, their height relative to the foot cup mounting plate can be adjusted independently, thereby compensating for the influence of uneven ground, keeping the entire main frame horizontal and stable, and providing a reliable foundation for precise calibration operations.

[0015] The beneficial effects of this invention are as follows: High-throughput parallel testing of electricity meters is achieved through two independently operating synchronous testing line groups and symmetrically arranged single-sided testing lines, greatly improving overall operational efficiency; the lifting and positioning assembly ensures the stability and positioning accuracy of the lifting process through the precise cooperation of the guide shaft and linear bearing, and the combined guidance of the tray positioning column and positioning pin; the crimping and testing assembly achieves reliable and consistent electrical connections through the guidance of the guide rod and the precise alignment of the testing pin; the unique limit rod and limit pin linkage mechanism effectively prevents the testing meter tray from moving forward when the tray is not in position, avoiding damage to the testing pin and improving the safety and service life of the equipment; the horizontal conveyor line and the suspension of the extended hanging lugs ensure conveying stability, while the height-adjustable support feet ensure the horizontal foundation of the main frame; the entire device has a compact structure, a high degree of automation, and stable and reliable operation, significantly improving the accuracy, efficiency, and automation level of electricity meter testing. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0017] Figure 1 A schematic diagram of the overall structure of the present invention is shown.

[0018] Figure 2 An enlarged structural schematic diagram of part A of the present invention is shown.

[0019] Figure 3 A top view of the overall structure of the present invention is shown.

[0020] Figure 4 An enlarged schematic diagram of part B of the present invention is shown.

[0021] Figure 5 A partial structural schematic diagram of the present invention is shown.

[0022] Figure 6 A side view of a partial structure of the crimping detection component of the present invention is shown.

[0023] Figure 7 A top view of a partial structure of the crimping detection component of the present invention is shown.

[0024] Figure 8 A schematic diagram of the lifting positioning plate of the present invention is shown.

[0025] Figure 9 A partial schematic diagram of the two structures of the present invention is shown.

[0026] Figure 10An enlarged schematic diagram of part C of the present invention is shown.

[0027] Figure 11 An enlarged schematic diagram of part D of the present invention is shown. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0029] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0030] Reference Figures 1-11 This embodiment provides a double-layer, double-wire energy meter calibration device, which includes, Main frame 1, with a limiting seat 11 provided on the outer side of the main frame 1; The calibration line group 2 is set on the main frame 1, and the calibration line group 2 consists of two sets of single-sided calibration lines 21 symmetrically arranged on the main frame 1. The calibration line group 2 is set as two groups, with one set of calibration line group 2 located above the other set of calibration line group 2. The single-sided calibration line 21 includes a horizontal conveyor line 3, a tray 4, a lifting and positioning component 5, and a pressing and testing component 6. The horizontal conveyor line 3 is installed on the main frame 1, the tray 4 is slidably set on the horizontal conveyor line 3, and the lifting and positioning component 5 and the pressing and testing component 6 are adapted and installed inside the main frame 1. The lifting and positioning component 5 is used to lift the tray 4 and the energy meter 100 at the inspection station and accurately position them to a predetermined height. Crimping test assembly 6 is used for electrical parameter verification; Specifically, the energy meter 100 to be tested is carried on a tray 4 and transported to the designated testing station via a horizontal conveyor line 3. Subsequently, the lifting and positioning assembly 5 is activated, lifting the tray 4 along with the energy meter 100, detaching it from the horizontal conveyor line 3 and precisely positioning it at the testing height. Next, the crimping testing assembly 6 extends horizontally, ensuring reliable contact between its testing pins 63 and the terminals of the energy meter 100 for electrical parameter verification. After verification, all components are reset in reverse order, and the horizontal conveyor line 3 transports the verified energy meter 100 out of the station. The upper and lower testing line groups 2 can operate independently and synchronously, significantly improving testing efficiency.

[0031] As one embodiment provided, such as Figure 9 , Figure 10 An extension lug 41 is fixedly connected to the outside of the pallet 4. A horizontal hole 42 is opened at the end of the extension lug 4 away from the pallet 4, and a positioning hole is provided at the bottom of the pallet 4. The extension lug 41 is used to suspend the pallet 4 on the horizontal conveyor line 3 for conveying, and cooperates with the limit seat 11 during the lifting process to achieve precise positioning in the height direction. The horizontal hole 42 and the positioning hole are respectively used to cooperate with the limit rod 12 and the pallet positioning column 53 to achieve dual positioning constraints in the horizontal and vertical directions.

[0032] As one embodiment provided, such as Figures 4-8 The lifting and positioning assembly 5 includes a lifting and positioning cylinder 51, a lifting and positioning plate 52 fixedly connected to the output end of the lifting and positioning cylinder 51, a tray positioning column 53 set at the top of the lifting and positioning plate 52, a bearing mounting plate 54 fixedly connected to the main frame 1, a floating joint 55 connected between the output end of the lifting and positioning cylinder 51 and the lifting and positioning plate 52, a guide shaft 56 fixed at its upper end to the lifting and positioning plate 52, and a linear bearing 57 that slides with the guide shaft 56. The linear bearing 57 is fixedly installed on the bearing mounting plate 54, and the cylinder body of the lifting and positioning cylinder 51 is fixed relative to the bearing mounting plate 54. Specifically, the lifting and positioning cylinder 51 drives the lifting and positioning plate 52 to move vertically through the floating joint 55. The sliding cooperation between the guide shaft 56 and the linear bearing 57 provides precise guidance for the lifting process and ensures smooth movement. During the lifting process, the pallet positioning pin 53 is inserted into the positioning hole at the bottom of the pallet 4 to achieve precise positioning on the horizontal plane and lifts the pallet 4 and the electricity meter 100 to the predetermined height, so that the extension lug 41 contacts the limit seat 11 and completes the final positioning.

[0033] As one embodiment provided, such as Figure 9 The crimping detection assembly 6 includes a crimping detection cylinder 61, a detection support 62 fixedly connected to the output end of the crimping detection cylinder 61, a plurality of detection pins 63 set on the detection support 62 and corresponding one-to-one with the terminals of the energy meter 100, a crimping detection frame 64 fixedly connected to the main frame 1, and a guide rod 65 fixedly connected to the main frame 1. The crimping detection frame 64 and the guide rod 65 are slidably connected, the detection support 62 is fixedly connected to the crimping detection frame 64, and the cylinder body of the crimping detection cylinder 61 is fixed to the main frame 1. Specifically, the crimping test cylinder 61 drives the crimping test frame 64 to slide horizontally along the guide rod 65, thereby driving the test support 62 and the test pin 63 to move synchronously; when the tray 4 is lifted and positioned, the crimping test cylinder 61 is activated, pushing the test pin 63 to extend horizontally, accurately inserting it into the terminal hole of the energy meter 100 and making reliable contact with it, thereby performing power-on testing and electrical parameter acquisition.

[0034] As one embodiment provided, such as Figure 10 A limit rod 12 is provided on the outside of the main frame 1, and a limit pin 13 is provided inside the limit seat 11; Specifically, when the tray 4 is not correctly lifted into position, the limit pin 13 will restrict the movement range of the limit rod 12, thereby physically preventing the crimping detection assembly 6 from advancing further and effectively preventing the detection pin 63 from being damaged due to excessive travel. Only after the tray 4 is correctly positioned will the protection mechanism be unlocked, allowing the crimping detection process to proceed normally.

[0035] As one embodiment provided, such as Figure 10 The limiting rod 12 includes a fixed seat 121 fixedly connected to the outside of the main frame 1, a crossbar 122 slidably connected to the fixed seat 121, and a spring 123 sleeved on the outside of the crossbar 122; one end of the spring 123 is connected to the limiting seat 11, the other end of the spring 123 is connected to the fixed seat 121, and the crossbar 122 is slidably disposed with the limiting seat 11. Specifically, spring 123 provides restoring force to crossbar 122. When the detection support 62 of the crimping detection assembly 6 pushes the inner limit end of crossbar 122, crossbar 122 compresses spring 123 and slides inward. If the protection mechanism is not released, that is, if the limit pin 13 is not lifted, the movement of crossbar 122 will be quickly blocked by the limit pin 13, thereby limiting the stroke of detection support 62. If the protection mechanism is released, crossbar 122 will be inserted into horizontal hole 42.

[0036] As one embodiment provided, such as Figure 10 The limiting pin 13 includes an upper pin 131 slidably disposed inside the limiting seat 11, a connecting rod 132 fixedly connected to the bottom end of the upper pin 131, a top pin 133 fixedly connected to one side of the bottom end of the connecting rod 132, and a locking pin 134 fixedly connected to the other side of the bottom end of the connecting rod 132; the connecting rod 132 slides inside the limiting seat 11. Specifically, when the tray 4 rises to its position, the top of its extended lug 41 presses the top pin 133 upward, which drives the locking pin 134 out of the movement path of the crossbar 122 through the connecting rod 132. This process releases the movement restriction on the limit rod 12, and the crimping test process can be carried out normally.

[0037] As one embodiment provided, such as Figure 8 At least two sets of pallet positioning posts 53 are fixedly connected to the top of positioning pins 531. The positioning pins 531 are coaxially arranged with the pallet positioning posts 53. The diameter of the positioning pins 531 is smaller than the diameter of the pallet positioning posts 53, and the upper end of the positioning pins 531 is hemispherical. The hemispherical upper end of the positioning pins 531 is designed to make it easier to be inserted into the positioning hole at the bottom of the pallet 4, playing a preliminary guiding role and reducing the requirements for initial positioning accuracy. Then, the pallet positioning posts 53 with larger diameters enter the positioning hole to achieve final tight fit and precise positioning.

[0038] As one embodiment provided, such as Figure 5 The horizontal conveyor line 3 consists of two sets of parallel conveyor tracks, and the pallet 4 is slidably mounted on the conveyor tracks via an extension lug 41. The extension lug 41 is mounted on the parallel conveyor tracks, so that the pallet 4 is suspended between the two tracks. This structure not only ensures the smooth transport of the pallet 4, but also uses the tracks to provide lateral restraint for the pallet 4, effectively preventing shaking and jamming during the transport process, and ensuring that the energy meter 100 can be accurately transported to the predetermined work position.

[0039] As one embodiment provided, such as Figure 11 The bottom of the main frame 1 is provided with a foot cup mounting plate 14, and the bottom of the foot cup mounting plate 14 is threadedly connected to a support foot cup 15. The bottom surface of the support foot cup 15 is horizontal. By rotating each support foot cup 15, its height relative to the foot cup mounting plate 14 can be adjusted independently, thereby compensating for the impact of uneven ground, keeping the entire main frame 1 horizontal and stable, and providing a reliable foundation for precise calibration operations.

[0040] In summary, the energy meter 100 to be tested is carried on the tray 4 and transported to the testing station via the horizontal conveyor line 3. The lifting and positioning cylinder 51 drives the lifting and positioning plate 52 to rise smoothly along the guide shaft 56 and the linear bearing 57 through the floating joint 55. This allows the tray positioning column 53 and its hemispherical positioning pin 531 at the top to be inserted into the positioning hole at the bottom of the tray 4 for initial guidance and precise positioning. The tray 4 and the energy meter 100 are then lifted until the extension lug 41 contacts the limit seat 11 to complete the height positioning. Subsequently, the pressing and testing cylinder 61 drives the pressing and testing frame 64 to move horizontally along the guide rod 65. The movement causes the test pins 63 on the test tray 62 to extend and precisely press against the terminals of the energy meter 100 for electrical parameter verification. During this process, if the tray 4 is not lifted into position, the locking pin 134 in the limit pin 13 will block the movement of the horizontal bar 122 in the limit rod 12 to prevent the test pins 63 from being damaged. After the tray 4 is in position, the extended hanging ear 41 presses against the top pin 133, causing the locking pin 134 to retract. The horizontal bar 122 is inserted into the horizontal hole 42 of the hanging ear under the action of the spring 123, and the pressing test can then proceed normally. After the verification is completed, all components are reset, and the energy meter 100 is sent out by the horizontal conveyor line 3. The device greatly improves calibration efficiency by operating the upper and lower calibration line groups 2 synchronously. The lifting and pressing process relies on the guide shaft 56, linear bearing 57 and guide rod 65 to ensure motion accuracy. The combination design of positioning pin 531 and tray positioning column 53 reduces positioning difficulty and improves reliability. The linkage limit mechanism effectively protects the fragile detection pin 63. The support feet 15 can adjust the level of the main frame 1 to ensure a stable calibration environment. Overall, it realizes efficient, stable and reliable automated calibration of electricity meters.

[0041] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A calibration device for a double-layer, double-wire energy meter, characterized in that: include, A main frame (1) is provided with a limiting seat (11) on the outside of the main frame (1). The calibration line group (2) is set on the main frame (1), and the calibration line group (2) consists of two sets of single-sided calibration lines (21) symmetrically arranged on the main frame (1). The calibration line group (2) is set as two groups, and one set of the calibration line group (2) is located above the other set of the calibration line group (2). The single-sided calibration line (21) includes a horizontal conveyor line (3), a tray (4), a lifting and positioning component (5), and a crimping detection component (6). The horizontal conveyor line (3) is installed on the main frame (1), the tray (4) is slidably disposed on the horizontal conveyor line (3), and the lifting and positioning component (5) and the crimping detection component (6) are adapted to be installed inside the main frame (1). The lifting and positioning component (5) is used to lift and precisely position the tray (4) and the energy meter (100) at the inspection station to a predetermined height; The crimping detection component (6) is used for electrical parameter verification.

2. The double-layer double-wire energy meter calibration device according to claim 1, characterized in that: An extension lug (41) is fixedly connected to the outside of the tray (4). A horizontal hole (42) is provided at the end of the extension lug (41) away from the tray (4). A positioning hole is provided at the bottom of the tray (4).

3. The double-layer double-wire energy meter calibration device according to claim 2, characterized in that: The lifting and positioning assembly (5) includes a lifting and positioning cylinder (51), a lifting and positioning plate (52) fixedly connected to the output end of the lifting and positioning cylinder (51), a tray positioning column (53) set at the top of the lifting and positioning plate (52), a bearing mounting plate (54) fixedly connected to the main frame (1), a floating joint (55) connected between the output end of the lifting and positioning cylinder (51) and the lifting and positioning plate (52), a guide shaft (56) fixed at its upper end to the lifting and positioning plate (52), and a linear bearing (57) slidingly engaged with the guide shaft (56). The linear bearing (57) is fixedly installed on the bearing mounting plate (54), and the cylinder body of the lifting and positioning cylinder (51) is relatively fixed to the bearing mounting plate (54).

4. The double-layer double-wire energy meter calibration device according to claim 3, characterized in that: The crimping detection assembly (6) includes a crimping detection cylinder (61), a detection support (62) fixedly connected to the output end of the crimping detection cylinder (61), a plurality of detection pins (63) disposed on the detection support (62) and corresponding one-to-one with the terminals of the energy meter (100), a crimping detection frame (64) fixedly connected to the main frame (1), and a guide rod (65) fixedly connected to the main frame (1). The crimping detection frame (64) is slidably connected to the guide rod (65), the detection support (62) is fixedly connected to the crimping detection frame (64), and the cylinder body of the crimping detection cylinder (61) is fixed to the main frame (1).

5. The double-layer double-wire energy meter calibration device according to claim 3 or 4, characterized in that: A limit rod (12) is provided on the outside of the main frame (1), and a limit pin (13) is provided inside the limit seat (11).

6. The double-layer double-wire energy meter calibration device according to claim 5, characterized in that: The limiting rod (12) includes a fixed seat (121) fixedly connected to the outside of the main frame (1), a crossbar (122) slidably connected to the fixed seat (121), and a spring (123) sleeved on the outside of the crossbar (122); one end of the spring (123) is connected to the limiting seat (11), the other end of the spring (123) is connected to the fixed seat (121), and the crossbar (122) is slidably disposed with respect to the limiting seat (11).

7. The double-layer double-wire energy meter calibration device according to claim 6, characterized in that: The limiting pin (13) includes an upper pin (131) slidably disposed inside the limiting seat (11), a connecting rod (132) fixedly connected to the bottom end of the upper pin (131), a top pin (133) fixedly connected to one side of the bottom end of the connecting rod (132), and a locking pin (134) fixedly connected to the other side of the bottom end of the connecting rod (132); the connecting rod (132) slides inside the limiting seat (11).

8. The double-layer double-wire energy meter calibration device according to claim 7, characterized in that: At least two sets of the pallet positioning posts (53) are fixedly connected to the top of the positioning pins (531). The positioning pins (531) are coaxially arranged with the pallet positioning posts (53). The diameter of the positioning pins (531) is smaller than the diameter of the pallet positioning posts (53), and the upper end of the positioning pins (531) is hemispherical.

9. The double-layer double-wire energy meter calibration device according to claim 8, characterized in that: The horizontal conveyor line (3) consists of two sets of parallel conveyor tracks, and the pallet (4) is slidably mounted on the conveyor track via the extended lug (41).

10. The double-layer double-wire energy meter calibration device according to any one of claims 6 to 9, characterized in that: The bottom of the main frame (1) is provided with a foot cup mounting plate (14), and the bottom of the foot cup mounting plate (14) is threadedly connected to a support foot cup (15), and the bottom surface of the support foot cup (15) is horizontal.

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