Double-layer electric energy meter verification connection device

Abstract

The application discloses a double-layer electric energy meter calibration connection device and relates to the technical field of electric energy meter detection devices. The device comprises a double-layer circulation transport line and an upper and lower loading position, a transfer loading position, a mechanical arm and a mechanical hand arranged on the left side of the double-layer circulation transport line. The double-layer circulation transport line is sequentially arranged from left to right by a first lifting conveying device, a double-layer horizontal conveying device and a second lifting conveying device, and the upper layer and the lower layer of the double-layer horizontal conveying device are each provided with a plurality of detection stations and plug-in devices. The tray can independently circulate in the double-layer circulation transport line, the mechanical hand can grab the electric energy meter to be detected from the loading box of the upper and lower loading position and place the electric energy meter on the tray, and the qualified electric energy meter can be returned to the empty loading box of the transfer loading position after the detection is completed. The application only sets one external interface on one side, and the AGV can complete the operation of sending the full loading box and taking out the qualified product loading box at the same station, thereby improving the logistics turnover efficiency and reducing the equipment floor area.

Description

Technical Field

[0001] This invention belongs to the technical field of electricity meter testing devices, specifically relating to a double-layer electricity meter calibration and connection device. Background Technology

[0002] As a fundamental piece of equipment in the field of electricity metering, the accuracy of electricity meters directly affects the economic interests of both electricity suppliers and consumers. Therefore, newly manufactured or repaired electricity meters must undergo rigorous verification before being put into use. Currently, the industry widely adopts automated assembly line verification devices to replace traditional manual verification methods, thereby improving verification efficiency and consistency.

[0003] Existing calibration devices still present numerous inconveniences in practical applications. On the one hand, the integration of these devices with automated logistics systems is not smooth enough. A typical scenario is that automated guided vehicles (AGVs) need to complete the handover of material boxes at the loading and unloading stations separately, making it impossible to complete the sequential feeding of instruments to be inspected and the retrieval of inspected instruments at the same station. This multi-station layout not only requires AGVs to have longer movement paths, resulting in lower efficiency, but also occupies a large amount of ground space, limiting the station density per unit area. Summary of the Invention

[0004] This invention proposes a double-layer energy meter calibration connection device, the purpose of which is to enable the energy meter calibration device to complete the feeding of the meter to be tested and the retrieval of the tested meter in a single workstation with the automated guided vehicle, thereby reducing the AGV's movement path and the space occupied by the equipment.

[0005] The technical solution of this invention is as follows: A double-layer electricity meter calibration connection device includes a tray for carrying the electricity meter and a conveyor system for driving the tray to move. The conveyor system is a double-layer circulating transport line. The double-layer energy meter calibration and connection device also includes the loading and unloading positions, the transfer position, the robotic arm, and the robotic hand installed at the end of the robotic arm, all located on the left side of the double-layer circulating transport line. The double-layer circulating transport line includes a first lifting conveyor, a double-layer horizontal conveyor, and a second lifting conveyor, arranged from left to right. The double-layer horizontal conveying device includes a double-layer frame with upper and lower first horizontal guide rails on the frame. The stator of a linear motor is installed on the first horizontal guide rail, and the mover of the linear motor is installed at the bottom of the tray. Multiple testing stations are arranged sequentially along the first horizontal guide rails on the upper and lower layers of the double-layer horizontal conveying device. Each testing station has a plug-in device on its front and / or rear side. The plug-in device is used for electrical connection with an electricity meter and also for electrical connection with an electricity meter testing device. The first and second lifting conveying devices have the same structure: they include a second frame, a lifting drive module mounted on the second frame, a fourth support that is lifted and lowered under the drive of the lifting drive module, and a second horizontal guide rail mounted on the fourth support. The second horizontal guide rail is equipped with the stator of a linear motor. The slider at the bottom of the tray can slide in cooperation with both the first and second horizontal guide rails.

[0006] As a further improvement to the double-layer energy meter verification and connection device: the robotic arm includes a fixed first frame, a longitudinal drive mechanism mounted on the first frame, a horizontal beam mounted on the moving end of the longitudinal drive mechanism, a transverse drive mechanism mounted on the crossbeam, a first bracket mounted on the moving end of the transverse drive mechanism, a lifting drive mechanism mounted on the first bracket, a second bracket mounted on the moving end of the lifting drive mechanism, a rotary cylinder mounted at the bottom of the second bracket, and a third bracket mounted on the rotating end of the rotary cylinder; The robotic arm is mounted on the third support.

[0007] As a further improvement to the double-layer energy meter verification and connection device: the robotic arm includes a first pneumatic gripper for gripping the material box and a second pneumatic gripper for gripping the energy meter.

[0008] As a further improvement to the double-layer energy meter verification and connection device: the tray body is equipped with a detachable and replaceable positioning baffle, which is arranged in the left-right direction.

[0009] As a further improvement to the double-layer energy meter verification and connection device: a first elastic limiting mechanism is also installed on the tray body. The first elastic limiting mechanism includes a second positioning block that can move left and right relative to the tray body and a first spring for driving the second positioning block to reset.

[0010] As a further improvement to the double-layer energy meter verification and connection device: a second elastic limiting mechanism is also installed on the tray body. The second elastic limiting mechanism includes a third positioning block that can move up and down relative to the tray body and a second spring for driving the third positioning block to reset upward.

[0011] As a further improvement to the double-layer energy meter verification connection device: the plug-in device includes a base plate fixedly installed on the double-layer frame, a movable plate installed on the base plate by sliding fit, a plug-in drive cylinder fixed on the base plate and whose piston rod is connected to the movable plate, and a plug-in module installed on the movable plate. The plug-in module is equipped with a first probe for electrical connection with the energy meter under test.

[0012] As a further improvement to the double-layer energy meter verification and connection device: the top of the movable plate is provided with a locking buckle, which cooperates with the plug hole on the plug module.

[0013] As a further improvement to the double-layer energy meter verification connection device: the plug-in module also includes a housing, a second probe, and a connecting wire; The first probe is horizontally mounted on the housing, and the second probe is vertically mounted on the housing in correspondence with the first probe. The first probe and the corresponding second probe are electrically connected by a connecting wire. The movable plate is also equipped with a connector, and a connecting post corresponding to the second probe is fixedly installed in the connector; the second probe is inserted downward into the corresponding connecting post; the connecting post is also electrically connected to the terminal of the energy meter testing device.

[0014] As a further improvement to the double-layer energy meter calibration connection device, it also includes a defective conveyor line located at the left end of the double-layer circulating transport line.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention employs a double-layer circulating transport line, in conjunction with loading / unloading stations, transfer stations, and robotic arms and hands located on the left side. This allows for the sequential loading of instruments to be inspected and the unloading of inspected instruments within the same workstation. Automated Guided Vehicles (AGVs) only need to dock with the connecting device at a single workstation to complete the transfer of material bins and energy meters, eliminating the need to travel to separate loading and unloading stations. This shortens the AGV's movement path, improves logistics turnover efficiency, and reduces the floor space occupied by the equipment, thus increasing the workstation density per unit area.

[0016] 2. The double-layer circulating conveyor line consists of a first lifting conveyor, a double-layer horizontal conveyor, and a second lifting conveyor. Multiple testing stations are located on both the upper and lower layers of the double-layer horizontal conveyor. Pallets can circulate between the upper and lower layers. When a pallet carrying an energy meter reaches a testing station, the plug-in device on the front and / or rear of that station can electrically connect to the energy meter and connect it to the testing equipment. This structure allows multiple energy meters to be calibrated simultaneously on both layers, and each testing station can operate independently, increasing the calibration throughput per unit time.

[0017] 3. The first and second lifting conveying devices utilize a lifting drive module to move the second horizontal guide rail up and down. The slider at the bottom of the pallet can slide in engagement with both the first and second horizontal guide rails. When a pallet needs to be transferred from one layer to another in the double-layer horizontal conveying system, the second horizontal guide rail of the lifting conveying device can be precisely raised and lowered to align with the first horizontal guide rail of the target layer (with a very small gap, allowing the slider to pass smoothly). Driven by a linear motor, the pallet slides directly into the second horizontal guide rail and is then transferred to another layer with the lifting motion. The entire layer-changing process requires no additional handling mechanism, and the operation is smooth and reliable.

[0018] 4. The tray is equipped with removable and interchangeable positioning guards. By adjusting the mounting position of the positioning guards on the tray, the layout of the installation station can be changed to accommodate different sizes and types of metering equipment, such as single-phase meters and three-phase meters. This structure allows the same connection device to be compatible with multiple products to be inspected, eliminating the need to change to dedicated trays for different meter types, thus reducing equipment changeover and management costs.

[0019] 5. The tray is also equipped with a first elastic limiting mechanism and a second elastic limiting mechanism. The first elastic limiting mechanism uses a second positioning block that moves left and right and a first spring, arranged in pairs to clamp the three-phase meter; the second elastic limiting mechanism uses a third positioning block that moves up and down and a second spring, arranged in pairs to position a single-phase meter. When a three-phase meter is installed, the three-phase meter will press the third positioning block into the tray body to avoid interference. This elastic positioning structure can provide reliable limiting for energy meters of different specifications and can adaptively avoid structural interference, ensuring the positioning accuracy and ease of use of the tray under the condition of full compatibility.

[0020] 6. The plug-in module of the plug-in device is detachable and installable by engaging with the socket on the moving plate via a locking buckle. Simultaneously, the first and second probes inside the module are electrically connected via a connecting wire, with the second probe inserting downwards into the connecting post within the connector. When the type or specifications of the tested energy meter change, only the plug-in module with the corresponding probe layout needs to be replaced; the moving plate, plug-in drive cylinder, and connecting post can all be retained. This modular design allows the plug-in device to quickly adapt to the testing interfaces of different energy meter models without requiring complete replacement or rewiring, reducing the difficulty and cost of equipment upgrades. Attached Figure Description

[0021] Figure 1 A three-dimensional diagram of the calibration connection device for a double-layer energy meter.

[0022] Figure 2 for Figure 1 The enlarged view of part A in the middle is used to show the structure of the robotic arm and robotic hand.

[0023] Figure 3 This is a magnified view of a portion of the robotic arm and robotic hand.

[0024] Figure 4 Front view of the double-layer energy meter calibration connection device.

[0025] Figure 5 This is a partial enlarged view of the pallet and insertion device on the double-layer horizontal conveyor.

[0026] Figure 6 This is a partial enlarged view of the second lifting and conveying device.

[0027] Figure 7 This is a schematic diagram of two three-phase meters mounted on a tray.

[0028] Figure 8 This is a schematic diagram of two single-phase meters mounted on a tray.

[0029] Figure 9 This is a schematic diagram of the structure when the positioning guard on the tray is placed on one side, allowing for the installation of a three-phase meter.

[0030] Figure 10 This is a schematic diagram of the structure when the positioning guard on the tray is placed in the middle, allowing for the installation of a single-phase meter.

[0031] Figure 11 This is a cross-sectional view of the pallet, used to show the structure of the positioning guard.

[0032] Figure 12 This is one of the three-dimensional sectional views of the pallet, used to show the structure of the first elastic limiting mechanism.

[0033] Figure 13 This is a three-dimensional view of the first elastic limiting mechanism.

[0034] Figure 14 This is the second three-dimensional sectional view of the pallet, used to show the structure of the second elastic limiting mechanism.

[0035] Figure 15 This is a structural diagram of the plug-in module.

[0036] Figure 16 This is a three-dimensional sectional view of the plug-in module.

[0037] The reference numerals in the figures include: 1. Robotic arm; 1-1. First frame; 1-2. Longitudinal drive mechanism; 1-3. Crossbeam; 1-4. Lateral drive mechanism; 1-5. First support; 1-6. Lifting drive mechanism; 1-7. Second support; 1-8. Rotary cylinder; 1-9. Third support; 2. Robotic arm; 2-1. First pneumatic gripper; 2-2. Second pneumatic gripper; 3. Upper and lower material positions; 4. Transfer material position; 5. First lifting and conveying device; 6. Incompatible 7. Grid conveyor line, 7-1. Double-layer horizontal conveyor device, 7-2. Double-layer frame, 7-2. Plug-in device, 7-2-1. Base plate, 7-2-2. Moving plate, 7-2-3. Plug-in module, 7-2-3-1. Housing, 7-2-3-2. First probe, 7-2-3-3. Connecting line, 7-2-3-4. Second probe, 7-2-4. Plug-in drive cylinder, 7-2-5. Locking buckle, 7-2-6. Connecting seat, 7- 2-7. Connecting column; 7-3. Tray; 7-3-1. Lower tray body; 7-3-2. Upper tray body; 7-3-3. First elastic limiting mechanism; 7-3-3-1. Spring fixing block; 7-3-3-2. First spring; 7-3-3-3. Second positioning block; 7-3-3-4. Slide seat; 7-3-3-5. Slide rail; 7-3-4. Second elastic limiting mechanism; 7-3-4-1. Third positioning block; 7-3-4- 2. Second spring; 7-3-4-3. Spring positioning sleeve; 7-3-4-4. Positioning protrusion; 7-3-5. Positioning stop; 7-3-5-1. First positioning block; 7-3-5-2. Positioning pin; 7-3-5-3. Connecting plate; 7-4. First horizontal guide rail; 8. Second lifting and conveying device; 58-1. Second frame; 58-2. Lifting drive module; 58-3. Fourth bracket; 58-4. Second horizontal guide rail. Detailed Implementation

[0038] The technical solution of the present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0039] like Figure 1 and Figure 4 As shown, this embodiment provides a double-layer energy meter calibration and connection device, including a tray 7-3 for carrying the energy meter and a conveyor system for driving the tray 7-3 to move. Specifically, the conveyor system adopts a double-layer circulating transport line structure. The double-layer energy meter calibration and connection device also includes loading / unloading positions 3, a transfer position 4, a robotic arm 1, and a robotic hand 2 installed at the end of the robotic arm 1, all located on the left side of the double-layer circulating transport line.

[0040] like Figure 2 and Figure 3As shown, the robotic arm 1 includes a fixed first frame 1-1, a longitudinal drive mechanism 1-2 mounted on the first frame 1-1, a horizontal beam 1-3 mounted on the moving end of the longitudinal drive mechanism 1-2, a transverse drive mechanism 1-4 mounted on the beam 1-3, a first bracket 1-5 mounted on the moving end of the transverse drive mechanism 1-4, a lifting drive mechanism 1-6 mounted on the first bracket 1-5, a second bracket 1-7 mounted on the moving end of the lifting drive mechanism 1-6, a rotary cylinder 1-8 mounted at the bottom of the second bracket 1-7, and a third bracket 1-9 mounted on the rotating end of the rotary cylinder 1-8. The robotic arm 2 is mounted on the third bracket 1-9. In this embodiment, both the longitudinal drive mechanism 1-2 and the transverse drive mechanism 1-4 use linear motors as drive elements, and are also equipped with sliders and guide rails. The moving end is connected to the slider, and the guide rail is mounted on the body of the mechanism or module. The stator of the linear motor is mounted on the guide rail, and the rotor is mounted on the moving end or the slider. The lifting drive mechanism 1-6 is driven by a motor, which converts the rotation of the motor into linear movement through a lead screw and guide rail mechanism. Its moving end can move up and down. Through the above structure, the robotic arm 1 can drive the robotic hand 2 to achieve three-dimensional movement and horizontal rotation. By rotating the rotary cylinder 1-8, the orientation angle of the robotic hand 2 can be changed, thereby accurately placing the energy meter onto the installation position of the tray 7-3.

[0041] like Figure 3 As shown, the robotic arm 2 includes a first pneumatic gripper 2-1 for gripping the material bin and a second pneumatic gripper 2-2 for gripping the electricity meters. Further, the first pneumatic gripper 2-1 consists of two sets, arranged side-by-side (according to the overall orientation of the device). The inner sides of the two downward-extending clamping plates of the first pneumatic gripper 2-1 are equipped with hook plates for engaging with grooves on the outer wall of the material bin. The second pneumatic gripper 2-2 also consists of two sets, arranged front-to-back, allowing it to grip two electricity meters sequentially. When the first pneumatic gripper 2-1 is open, it does not interfere with the material bin, allowing the robotic arm 2 to reach deeper, enabling the second pneumatic gripper 2-2 to smoothly extend into the material bin and grip the electricity meters.

[0042] like Figure 1 As shown, the double-layer circulating conveyor line includes a first lifting conveyor 5, a double-layer horizontal conveyor 7, and a second lifting conveyor 8 arranged sequentially from left to right. Specifically, as... Figure 4 , Figure 5 , Figure 8As shown, the double-layer horizontal conveying device 7 includes a double-layer frame 7-1, on which are arranged upper and lower first horizontal guide rails 7-4, and on the first horizontal guide rails 7-4 are the stators of linear motors. The bottom of the tray 7-3 is provided with the mover of the linear motor. Thus, the tray 7-3 can move along the first horizontal guide rails 7-4 in the upper and lower layers of the double-layer horizontal conveying device 7. Multiple testing stations are sequentially arranged along the first horizontal guide rails 7-4 in the upper and lower layers of the double-layer horizontal conveying device 7, and each testing station has a plug-in device 7-2 on its front and / or rear side. The plug-in device 7-2 is used for electrical connection with an electricity meter and also for electrical connection with electricity meter testing equipment.

[0043] like Figure 1 , Figure 4 , Figure 6 As shown, the first lifting conveyor 5 and the second lifting conveyor 8 have the same structure. Taking the second lifting conveyor 8 as an example, it includes a second frame 58-1, a lifting drive module 58-2 mounted on the second frame 58-1, a fourth support 58-3 that is lifted and lowered under the drive of the lifting drive module 58-2, and a second horizontal guide rail 58-4 mounted on the fourth support 58-3. The second horizontal guide rail 58-4 is equipped with the stator of a linear motor. The slider at the bottom of the tray 7-3 can slide in cooperation with both the first horizontal guide rail 7-4 and the second horizontal guide rail 58-4. In this embodiment, the lifting drive module 58-2 uses a linear motor as the driving element, and its internal structure is similar to that of the longitudinal drive mechanism 1-2 and the transverse drive mechanism 1-4. This is a conventional technical means in the field and will not be described in detail. When pallet 7-3 needs to be transferred from one layer to another in the double-layer horizontal conveyor 7, the second horizontal guide rail 58-4 of the lifting conveyor can be precisely raised and lowered to align with the first horizontal guide rail 7-4 of the target layer. The gap between the two is small, allowing the slider at the bottom of pallet 7-3 to pass smoothly. Driven by a linear motor, pallet 7-3 can slide directly into the second horizontal guide rail 58-4 and then be transferred to another layer with the lifting motion. The entire layer-changing process does not require the assistance of an additional handling mechanism.

[0044] like Figures 7 to 11As shown, a detachable and repositionable positioning guard 7-3-5 is installed on the tray body of the tray 7-3. This positioning guard 7-3-5 is arranged in the left-right direction. Specifically, the tray body of the tray 7-3 includes an upper tray body 7-3-2 and a lower tray body 7-3-1. The positioning guard 7-3-5 includes two first positioning blocks 7-3-5-1, each mounted on the tray body via two positioning pins 7-3-5-2. The two first positioning blocks 7-3-5-1 are fixedly connected by a connecting plate 7-3-5-3. This structure allows the positioning guard 7-3-5 to avoid other mechanisms (such as a first elastic limiting mechanism 7-3-3) located between the two first positioning blocks 7-3-5-1. By adjusting the installation position of the positioning guard 7-3-5 on the tray body, the layout of the installation station can be changed. Figure 7 and Figure 9 As shown, when the positioning stop 7-3-5 is installed in the middle and rear position of the tray 7-3, the front side of the positioning stop 7-3-5 forms two installation positions for placing the three-phase meter, with one end of the three-phase meter resting against the positioning stop 7-3-5. Figure 8 and Figure 10 As shown, when the positioning baffle 7-3-5 is installed in the middle of the tray 7-3, two installation positions for placing single-phase meters are formed on the front and rear sides of the positioning baffle 7-3-5, with one end of the single-phase meter resting on the positioning baffle 7-3-5.

[0045] like Figure 7 and Figure 9 As shown, each installation station for placing a three-phase meter is equipped with a first elastic limiting mechanism 7-3-3 on both the left and right sides. The paired first elastic limiting mechanisms 7-3-3 are used to clamp the three-phase meter and fix it in the central position through symmetrical elastic pressure. Specifically, as shown... Figure 12 and Figure 13As shown, the first elastic limiting mechanism 7-3-3 includes a second positioning block 7-3-3-3 that can move left and right relative to the disc body, and a first spring 7-3-3-2 for driving the second positioning block 7-3-3-3 to reset. In addition, the mechanism also includes a spring fixing block 7-3-3-1, a slide block 7-3-3-4, and a slide rail 7-3-3-5. The top of the disc body has a mounting groove, and the slide rail 7-3-3-5 is fixedly installed in the mounting groove. The slide block 7-3-3-4 cooperates with the slide rail 7-3-3-5, and the second positioning block 7-3-3-3 is fixedly installed on the slide block 7-3-3-4 by bolts. The spring fixing block 7-3-3-1 is fixedly installed on the disc body, and its bottom protrusion is located in the mounting groove. The first spring 7-3-3-2 is disposed between the spring fixing block 7-3-3-1 and the second positioning block 7-3-3-3. Preferably, the second positioning block 7-3-3-3 has an inclined surface on the side near the three-phase meter to reduce the resistance generated during the installation of the three-phase meter.

[0046] like Figure 8 and Figure 10 As shown, each installation station for placing a single-phase meter is equipped with a second elastic limiting mechanism 7-3-4 on both the left and right sides. The paired second elastic limiting mechanisms 7-3-4 are used to position the single-phase meter. Specifically, as... Figure 14 As shown, the second elastic limiting mechanism 7-3-4 includes a third positioning block 7-3-4-1 that can move up and down relative to the disc body, and a second spring 7-3-4-2 for driving the third positioning block 7-3-4-1 to return to its upward position. It also includes a spring positioning sleeve 7-3-4-3. The bottom of the spring positioning sleeve 7-3-4-3 is fixed to the lower disc body 7-3-1 by screws. The second spring 7-3-4-2 is placed inside the spring positioning sleeve 7-3-4-3. The upper end of the spring positioning sleeve 7-3-4-3 also slides into a smooth hole at the bottom of the third positioning block 7-3-4-1. The upper disc body 7-3-2 has a stop for limiting the third positioning block 7-3-4-1, constraining the extreme position of its upward movement. The top of the third positioning block 7-3-4-1 has a positioning protrusion 7-3-4-4. Preferably, the positioning protrusion 7-3-4-4 has a chamfer on the side near the single-phase meter to reduce resistance during installation. The single-phase meter is inserted between the two third positioning blocks 7-3-4-1 along the chamfer, completing the installation positioning. Since the single-phase meter is smaller than the three-phase meter, when installing the three-phase meter, the three-phase meter will press the third positioning block 7-3-4-1 into the panel, thus avoiding interference.

[0047] like Figure 5 , Figure 15 and Figure 16As shown, the plug-in device 7-2 includes a base plate 7-2-1 fixedly mounted on a double-layer frame 7-1, a movable plate 7-2-2 mounted on the base plate 7-2-1 via a sliding fit, a plug-in drive cylinder 7-2-4 fixed on the base plate 7-2-1 with its piston rod connected to the movable plate 7-2-2, and a plug-in module 7-2-3 mounted on the movable plate 7-2-2. The plug-in module 7-2-3 is equipped with a first probe 7-2-3-2 for electrical connection with the energy meter under test. Furthermore, the top of the movable plate 7-2-2 is provided with a locking buckle 7-2-5, which engages with a socket on the plug-in module 7-2-3, thereby enabling the plug-in module 7-2-3 to be detachably installed.

[0048] like Figure 15 and Figure 16 As shown, the plug-in module 7-2-3 also includes a housing 7-2-3-1, a second probe 7-2-3-4, and a connecting wire 7-2-3-3. The first probe 7-2-3-2 is horizontally mounted on the housing 7-2-3-1, and the second probe 7-2-3-4 corresponds to the first probe 7-2-3-2 and is vertically mounted on the housing 7-2-3-1. The first probe 7-2-3-2 and the corresponding second probe 7-2-3-4 are electrically connected via the connecting wire 7-2-3-3. A connector 7-2-6 is also mounted on the movable plate 7-2-2, and a connecting post 7-2-7 corresponding one-to-one with the second probe 7-2-3-4 is fixedly installed inside the connector 7-2-6. The second probe 7-2-3-4 is inserted downwards into the corresponding connecting post 7-2-7.

[0049] Furthermore, each terminal of the electricity meter testing equipment is electrically connected to the corresponding connecting post 7-2-7 of the testing station. The electricity meter testing equipment includes a standard source, a calibrator, etc., which are existing and commonly used testing equipment; their structure and usage will not be described in detail here. The electricity meter testing equipment can be installed on a double-layer rack 7-1 or in other locations.

[0050] The layout of the second probe 7-2-3-4 on different plug-in modules 7-2-3 is compatible with each other and can be accurately inserted into the connecting post 7-2-7. Therefore, after replacing the plug-in module 7-2-3, it is not necessary to readjust the connecting wires between the connecting post 7-2-7 and the energy meter testing device.

[0051] The working process of this device is explained in detail below: The AGV places a stack of bins filled with energy meters to be inspected at the upper and lower loading positions 3. The robotic arm 2 picks up the energy meters from the top bin at loading position 3 and places them onto the corresponding installation station on the pallet 7-3 located on the first lifting conveyor 5. From this moment, the pallet 7-3 immediately flows along the double-layer circulating transport line, initiating the inspection process. When all the energy meters in a bin have been picked up, the bin becomes empty, and the robotic arm 2 moves the empty bin from loading position 3 to the intermediate loading position 4. The robotic arm 2 repeats the above actions until all the full bins at loading position 3 are emptied and removed, and all the empty bins are stacked at the intermediate loading position 4. At this point, all the energy meters to be inspected in this batch have entered the double-layer circulating transport line.

[0052] Depending on the type of electricity meter, the positioning flanges 7-3-5 on the tray 7-3 are pre-adjusted to the corresponding positions. For three-phase meters, both sides are positioned and clamped by the positioning flanges 7-3-5 and a pair of first elastic limiting mechanisms 7-3-3, respectively; for single-phase meters, both sides are positioned by the positioning flanges 7-3-5 and a pair of second elastic limiting mechanisms 7-3-4, respectively. When a single-phase meter is installed, the third positioning block 7-3-4-1 of the second elastic limiting mechanism 7-3-4 pops upward under the action of the second spring 7-3-4-2, providing lateral positioning for the single-phase meter; when a three-phase meter is installed, its own weight or installation pressure will press the third positioning block 7-3-4-1 into the tray body to avoid interference.

[0053] The tray 7-3 containing the electricity meter flows in a fixed direction in the double-layer circulating conveyor line: it moves from left to right along the upper layer of the double-layer horizontal conveyor 7 until it enters the second lifting conveyor 8, then falls under the drive of the second lifting conveyor 8, and then moves from right to left into the lower layer of the double-layer horizontal conveyor 7 until it enters the first lifting conveyor 5, then rises under the drive of the first lifting conveyor 5, and then enters the upper layer of the double-layer horizontal conveyor 7. Specifically, this flow is step-by-step: when the upper layer moves to the right, the second horizontal guide rails 58-4 on the fourth brackets 58-3 of the first lifting conveyor 5 and the second lifting conveyor 8 are aligned with the first horizontal guide rails 7-4 of the upper layer of the double-layer horizontal conveyor 7, and the first lifting conveyor 5 has the tray 7-3, while the second lifting conveyor 8 does not have the tray 7-3. Then, the first lifting conveyor 5 pushes its pallet 7-3 to the right, allowing it to enter the upper layer of the double-layer horizontal conveyor 7. Simultaneously, all pallets 7-3 on the upper layer of the double-layer horizontal conveyor 7 move one station to the right, with the rightmost pallet 7-3 entering the second lifting conveyor 8. Subsequently, the first lifting conveyor 5 and the second lifting conveyor 8 descend, aligning their second horizontal guide rail 58-4 with the lower layer's first horizontal guide rail 7-4. Next, the second lifting conveyor 8 pushes its pallet 7-3 to the left, allowing it to enter the lower layer of the double-layer horizontal conveyor 7. Simultaneously, all pallets 7-3 on the lower layer of the double-layer horizontal conveyor 7 move one station to the left, with the leftmost pallet 7-3 entering the first lifting conveyor 5. This cycle repeats, enabling the continuous flow of pallets 7-3 within the double-layer circular transport line.

[0054] During the transfer process, tray 7-3 will stop at a certain testing station for testing. During testing, the corresponding insertion device 7-2 at that station will activate. Depending on the number and layout of the energy meters on tray 7-3, one insertion device 7-2 may activate, or both insertion devices 7-2 on both sides may activate (e.g., when there are 4 energy meters on tray 7-3). The insertion drive cylinder 7-2-4 extends, pushing the moving plate 7-2-2 and the insertion module 7-2-3 towards the energy meter, causing the first probe 7-2-3-2 on the insertion module 7-2-3 to insert into the corresponding terminal on the energy meter, establishing an electrical connection. The electrical signal from the energy meter is sequentially transmitted through the first probe 7-2-3-2, connecting wire 7-2-3-3, second probe 7-2-3-4, connecting post 7-2-7, and connecting wire to the energy meter testing equipment, initiating various verification processes for the energy meter. Each testing station can operate independently, enabling a streamlined process where multiple energy meters are simultaneously calibrated on both upper and lower levels. If an energy meter model does not match the current testing station, that meter can be skipped, and tray 7-3 continues to circulate until it reaches the appropriate station, ultimately ensuring that all energy meters complete the required testing.

[0055] After the electricity meters have completed their testing, the non-conforming meters can be sorted according to the test results. Specifically, when the pallet 7-3 carrying the non-conforming meters arrives at the first lifting and conveying device 5, the robotic arm 2 moves the non-conforming meters to the non-conforming conveyor line 6. The non-conforming meters are then moved to other locations for further processing along the automatically operating non-conforming conveyor line 6. Conforming meters, upon arriving at the first lifting and conveying device 5, are placed into a hopper by the robotic arm 2. At this time, the robotic arm 2 first places an empty hopper from the transfer station 4 onto the upper and lower stations 3, and then places the conforming meters into that hopper. When a hopper is full, the robotic arm 2 removes the next empty hopper and continues filling until all conforming meters are stacked on the upper and lower stations 3. Finally, there are no more empty hoppers at the transfer station 4. Subsequently, the AGV arrives at the upper and lower stations 3 and removes the stacked hoppers along with the conforming meters inside, transporting them out.

[0056] The entire device relies on the independent circulation of pallets 7-3, the empty hopper buffer at transfer station 4, and the immediate diversion of defective products, exposing only one interface: loading and unloading stations 3. The AGV only needs to complete two actions at the same location: filling the hopper and removing the hopper containing the qualified energy meter, making connection much more convenient. If a defective energy meter is found during the inspection process, the robotic arm 2 will pick it up separately and place it on the defective conveyor line 6, from which it will be sent out. This completes one full inspection cycle.

[0057] It should be noted that, as will be apparent to those skilled in the art, the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics thereof. The scope of the present invention is defined by the claims rather than the foregoing description.

Claims

1. A double-layer energy meter calibration connection device, comprising a tray (7-3) for carrying the energy meter and a conveyor system for driving the tray (7-3) to move, characterized in that: The assembly line is a double-layer circulating transport line; The double-layer energy meter calibration and connection device also includes the upper and lower material positions (3), the transfer material position (4), the robotic arm (1), and the robotic hand (2) installed at the end of the robotic arm (1) on the left side of the double-layer circulating transport line. The double-layer circular transport line includes a first lifting conveyor (5), a double-layer horizontal conveyor (7), and a second lifting conveyor (8) arranged from left to right. The double-layer horizontal conveying device (7) includes a double-layer frame (7-1), on which are provided upper and lower first horizontal guide rails (7-4), on which are provided the stator of a linear motor, and on the bottom of the tray (7-3) are provided the mover of a linear motor; the upper and lower layers of the double-layer horizontal conveying device (7) are provided with multiple detection stations along the first horizontal guide rails (7-4), and each detection station is provided with a plug-in device (7-2) on the front and / or rear side; the plug-in device (7-2) is used to make an electrical connection with the energy meter, and is also used to make an electrical connection with the energy meter testing equipment; The first lifting conveyor (5) and the second lifting conveyor (8) have the same structure: including a second frame (58-1), a lifting drive module (58-2) installed on the second frame (58-1), a fourth support (58-3) that is lifted and lowered under the drive of the lifting drive module (58-2), and a second horizontal guide rail (58-4) installed on the fourth support (58-3). The second horizontal guide rail (58-4) is provided with a stator of a linear motor. The slider at the bottom of the tray (7-3) can slide with both the first horizontal guide rail (7-4) and the second horizontal guide rail (58-4).

2. The double-layer energy meter calibration and connection device as described in claim 1, characterized in that: The robotic arm (1) includes a fixed first frame (1-1), a longitudinal drive mechanism (1-2) mounted on the first frame (1-1), a horizontal beam (1-3) mounted on the moving end of the longitudinal drive mechanism (1-2), a transverse drive mechanism (1-4) mounted on the horizontal beam (1-3), a first bracket (1-5) mounted on the moving end of the transverse drive mechanism (1-4), a lifting drive mechanism (1-6) mounted on the first bracket (1-5), a second bracket (1-7) mounted on the moving end of the lifting drive mechanism (1-6), a rotary cylinder (1-8) mounted at the bottom of the second bracket (1-7), and a third bracket (1-9) mounted on the rotating end of the rotary cylinder (1-8). The robotic arm (2) is mounted on the third support (1-9).

3. The double-layer energy meter calibration and connection device as described in claim 1, characterized in that: The robotic arm (2) includes a first pneumatic gripper (2-1) for gripping a hopper and a second pneumatic gripper (2-2) for gripping an electricity meter.

4. The double-layer energy meter calibration and connection device as described in claim 1, characterized in that: The tray (7-3) is equipped with a detachable and repositionable positioning guard (7-3-5), which is arranged in the left-right direction.

5. The double-layer energy meter calibration and connection device as described in claim 1, characterized in that: The tray (7-3) is also equipped with a first elastic limiting mechanism (7-3-3). The first elastic limiting mechanism (7-3-3) includes a second positioning block (7-3-3-3) that can move left and right relative to the tray and a first spring (7-3-3-2) for driving the second positioning block (7-3-3-3) to reset.

6. The double-layer energy meter calibration and connection device as described in claim 1, characterized in that: The tray (7-3) is also equipped with a second elastic limiting mechanism (7-3-4). The second elastic limiting mechanism (7-3-4) includes a third positioning block (7-3-4-1) that can move up and down relative to the tray and a second spring (7-3-4-2) for driving the third positioning block (7-3-4-1) to reset upward.

7. The double-layer energy meter calibration and connection device as described in claim 1, characterized in that: The plug-in device (7-2) includes a base plate (7-2-1) fixedly installed on a double-layer frame (7-1), a movable plate (7-2-2) installed on the base plate (7-2-1) by sliding fit, a plug-in drive cylinder (7-2-4) fixed on the base plate (7-2-1) and whose piston rod is connected to the movable plate (7-2-2), and a plug-in module (7-2-3) installed on the movable plate (7-2-2). The plug-in module (7-2-3) is equipped with a first probe (7-2-3-2) for electrical connection with the energy meter under test.

8. The double-layer energy meter calibration connection device as described in claim 7, characterized in that: The top of the movable plate (7-2-2) is provided with a locking buckle (7-2-5), which cooperates with the plug hole on the plug module (7-2-3).

9. The double-layer energy meter calibration connection device as described in claim 8, characterized in that: The plug-in module (7-2-3) also includes a housing (7-2-3-1), a second probe (7-2-3-4), and a connecting wire (7-2-3-3). The first probe (7-2-3-2) is horizontally mounted on the housing (7-2-3-1), and the second probe (7-2-3-4) is vertically mounted on the housing (7-2-3-1) corresponding to the first probe (7-2-3-2). The first probe (7-2-3-2) and the corresponding second probe (7-2-3-4) are electrically connected through a connecting wire (7-2-3-3). The movable plate (7-2-2) is also equipped with a connector (7-2-6), and a connecting post (7-2-7) corresponding to the second probe (7-2-3-4) is fixedly installed inside the connector (7-2-6); the second probe (7-2-3-4) is inserted downward into the corresponding connecting post (7-2-7); the connecting post (7-2-7) is also electrically connected to the terminal of the energy meter testing device.

10. The double-layer energy meter calibration connection device as described in any one of claims 1 to 9, characterized in that: It also includes the defective conveyor line (6) located at the left end of the double-layer circulating conveyor line.

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