A metering current transformer detection tool

Abstract

The utility model discloses a current transformer detection frock for measurement, including L type support board, is provided with feeding area, detection area and discharging area in proper order on it, the feeding area is equipped with the conveyer belt, and the discharging area is equipped with the output belt, the detection area is equipped with transfer mechanism and clamping mechanism, the transfer mechanism symmetrical arrangement is in the both sides of L type support board, the first detection subassembly is provided with on the clamping mechanism symmetry, still be provided with second detection subassembly on L type support board, the utility model belongs to current transformer detection technical field, and specifically refers to a current transformer detection frock for measurement.

Description

Technical Field

[0001] This utility model belongs to the field of current transformer testing technology, specifically referring to a metering current transformer testing fixture. Background Technology

[0002] As a core component for power system metering and protection, the electrical performance testing of current transformers at their P1 / P2 terminals (primary winding terminals) and S1 / S2 terminals (secondary winding terminals) directly affects the accuracy of power metering and the stability of power supply, and is a critical process before the product leaves the factory. However, existing current transformer testing equipment suffers from numerous drawbacks in practical applications, severely limiting testing efficiency and quality: 1. Low level of automation and poor adaptability to large-scale testing: Traditional testing equipment relies heavily on manual labor for tasks such as loading, positioning and unloading workpieces. This not only results in high labor intensity and labor costs, but also makes it easy for manual operation to cause workpiece positioning deviations. The testing cycle for a single workpiece is long, making it difficult to meet the testing needs of large-scale continuous production. Although some semi-automatic equipment is equipped with simple conveying mechanisms, there are problems of jamming and offset in the connection between workpiece transfer and testing station, which makes it impossible to form a closed-loop automated flow. 2. Incomplete detection coverage, insufficient accuracy and reliability: Existing equipment mostly adopts a single detection method, which is difficult to adapt to the detection requirements of P1 / P2 and S1 / S2 terminals at the same time, and is prone to detection blind spots; in addition, the clamping mechanism lacks a precise centering design, the positioning reference is prone to deviation, and the detection probes are mostly rigid connections, which cannot adapt to the small size deviations of the terminals. This can easily lead to distortion of detection signals due to poor contact, and may also cause damage to the probe or terminals, resulting in a high detection error rate. 3. Poor structural adaptability and serious wear and tear on workpieces and equipment: The clamping and testing structures of existing testing fixtures are mostly specially designed and only compatible with current transformers of specific specifications. When changing product models, it is necessary to readjust or replace the fixtures, resulting in poor versatility. Utility Model Content

[0003] To address the aforementioned problems of low automation, incomplete detection coverage, insufficient accuracy, and poor adaptability, this utility model provides a current transformer testing fixture for metering.

[0004] To achieve the above functions, the technical solution adopted by this utility model is as follows: a current transformer testing fixture for metering includes an L-shaped support plate, on which a feeding area, a testing area and a discharging area are arranged in sequence; the feeding area is provided with a conveyor belt and the discharging area is provided with an output belt; The detection area is equipped with a transfer mechanism and a clamping mechanism; The transfer mechanism is symmetrically arranged on both sides of the L-shaped support plate; The clamping mechanism is symmetrically provided with a first detection component, which is used to clamp the P1 and P2 terminals of the current transformer body and detect the electrical performance of the P1 and P2 terminals. The L-shaped support plate is also provided with a second detection component, which is used to make elastic contact with the S1 and S2 terminals of the current transformer body and to detect the electrical performance of the S1 and S2 terminals.

[0005] Furthermore, this also includes the launching agencies; The pushing mechanism includes an L-shaped plate fixed to an L-shaped support plate, a pushing cylinder mounted on the L-shaped plate, and a rubber seat fixed to the piston end of the pushing cylinder. The rubber seat corresponds to the detection station setting in the detection area.

[0006] Furthermore, the transfer mechanism includes a first control cylinder hinged to the L-shaped plate, a second control cylinder hinged to the unloading area side of the L-shaped support plate, and symmetrically arranged Y-shaped rods; The centers of the two sets of Y-shaped rods are rotatably connected to the L-shaped support plate via rotating shafts; Of the two sets of Y-shaped rods, the driving end of one set is hinged to the piston end of the first control cylinder, and the driving end of the other set is hinged to the piston end of the second control cylinder; the driven ends of both sets of Y-shaped rods are rotatably connected to rollers. The rollers are used to contact the side wall of the current transformer body and, under the coordinated drive of the first control cylinder and the second control cylinder, push the current transformer body to move along the conveying direction.

[0007] Furthermore, a side support plate is fixed to the side of the L-shaped support plate; Inverted U-plates are symmetrically fixed on the side support plate and the L-shaped support plate; The clamping mechanism is installed between two sets of inverted U-plates.

[0008] Furthermore, the clamping mechanism includes a rotary motor fixed to the outer wall of one of the inverted U-plates, a bidirectional lead screw rotatably disposed between the two sets of inverted U-plates, a lead screw pair one threaded to one end of the bidirectional lead screw, a lead screw pair two threaded to the other end of the bidirectional lead screw, a telescopic cylinder assembly vertically fixed to the bottom of the lead screw pair one and the lead screw pair two respectively, and a support block fixedly connected to the piston end of the telescopic cylinder assembly. The output shaft of the rotary motor rotates through the inverted U-shaped plate and is coaxially and fixedly connected to the end of the bidirectional lead screw. The first detection component is fixed to the side of the support block facing the current transformer body.

[0009] Furthermore, a limiting rod parallel to the bidirectional lead screw is fixedly installed between the two sets of inverted U-plates; The two ends of the limiting rod respectively movably pass through lead screw pair one and lead screw pair two.

[0010] Furthermore, the first detection assembly includes a first detection cylinder fixed on the support block, a first detection probe with one end electrically connected to the first detection cylinder and the other end penetrating through the support block, a first support cylinder fixed on the side of the support block facing the current transformer body and sleeved outside the first detection probe, a first spring sleeved outside the first detection probe and fixed at one end to the support block, and a first support ring fixed at the other end of the first spring; the first support ring is sleeved outside the first detection probe and slidably inserted into the first support cylinder; The inner wall of the first supporting cylinder is symmetrically provided with first slots, and the outer peripheral wall of the first supporting ring is symmetrically fixed with first insertion parts, which are slidably inserted into the first slots. The first detection cylinder is connected to a first wire, which is electrically connected to an external detection device.

[0011] Furthermore, a support plate is fixed on the L-shaped support plate; The second detection component is symmetrically arranged in two sets and is fixedly installed on the support plate.

[0012] Furthermore, the second detection assembly includes a second detection cylinder fixed on the support plate, a second detection probe with one end electrically connected to the second detection cylinder and the other end penetrating through the support plate, a second support cylinder fixedly disposed on the top of the support plate and sleeved outside the second detection probe, a second spring sleeved outside the second detection probe and fixed at one end to the top of the support plate, and a second support ring fixed at the other end of the second spring. The second support ring is sleeved outside the second detection probe and is slidably inserted into the second support cylinder; The second detection cylinder is connected to a second wire, which is electrically connected to an external detection device.

[0013] Furthermore, the inner wall of the second supporting cylinder is symmetrically provided with a second slot, and the outer peripheral wall of the second supporting ring is symmetrically fixed with a second insertion part, which is slidably inserted into the second slot.

[0014] Compared with the prior art, the present invention achieves the following beneficial effects by adopting the above structure: 1. Full-process automation upgrade, significantly improving inspection efficiency and scalability: Through the coordinated design of the conveyor belt in the loading area, the symmetrical transfer mechanism in the inspection area, the ejection mechanism in the unloading area, and the output belt, a closed-loop automated production line for loading, transfer, inspection, and unloading is constructed. The entire process requires no manual intervention in workpiece flow and positioning, completely changing the traditional manual operation mode and significantly reducing labor costs and human error. The transfer mechanism relies on the dual-cylinder coordinated drive and Y-shaped lever principle, combined with the rolling friction roller design, to achieve rapid and accurate workpiece transfer. The ejection mechanism, driven by cylinders and flexibly pushed by rubber seats, shortens the unloading cycle and improves workpiece inspection efficiency, meeting the needs of large-volume continuous inspection.

[0015] 2. Dual guarantee of detection accuracy and reliability, covering all critical detection points: Two sets of detection components are designed. The first detection component clamps and connects to the P1 / P2 terminals, and the second detection component elastically contacts and connects to the S1 / S2 terminals, comprehensively covering the core electrical detection points of the current transformer and avoiding detection blind spots. The clamping mechanism adopts a combination structure of bidirectional lead screw and limit rod to ensure the coaxiality and stability of the first detection component's center clamping, while the limit rod restricts the rotational freedom of the lead screw pair. Both sets of detection components integrate spring buffer and slot anti-rotation structure, which not only absorbs clamping impact and adapts to small dimensional deviations of the terminals, but also avoids circumferential torsion of the probe, ensuring a stable electrical connection between the detection probe and the terminal and significantly reducing detection errors. 3. Strong structural adaptability and adequate protection, extending the service life of equipment and workpieces: The clamping mechanism, through the bidirectional screw reverse thread characteristic and telescopic cylinder group adjustment, can adapt to the clamping requirements of different specifications of current transformers without the need to replace special clamps; the rollers of the transfer mechanism convert sliding friction into rolling friction, the rubber seat of the ejection mechanism makes flexible contact, and the spring buffer design of the first and second detection components avoids workpiece surface wear and terminal damage throughout the entire process from transfer, clamping to unloading; the modular assembly of each mechanism results in high structural strength and stable operation. Attached Figure Description

[0016] Figure 1 This utility model provides a schematic diagram of the overall structure of a current transformer testing fixture for metering. Figure 1 ; Figure 2 This utility model provides a schematic diagram of the overall structure of a current transformer testing fixture for metering. Figure 2 ; Figure 3 This is a cross-sectional view of a current transformer testing fixture for metering proposed in this utility model. Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle; Figure 5 This is a schematic diagram of the overall structure of the first detection component proposed in this utility model; Figure 6 for Figure 5 Mid-section view.

[0017] Among them, 1. L-shaped support plate, 10. Side support plate, 101. Inverted U-shaped plate, 11. Loading area, 111. Conveyor belt, 12. Detection area, 13. Unloading area, 131. Output belt, 14. Transfer mechanism, 141. First control cylinder, 142. Second control cylinder, 143. Y-shaped rod, 144. Roller, 15. Clamping mechanism, 151. Rotary motor, 152. Bidirectional lead screw, 153. Lead screw pair one, 154. Lead screw pair two, 155. Telescopic cylinder assembly, 156. Support block, 157. Limiting rod, 16. First detection component, 161. First detection cylinder, 162. First detection probe, 163. First support cylinder, 1631. First slot, 164. First spring, 165. First support ring, 1651. 166. First plug-in part, 17. First wire, 17. Second detection component, 171. Second detection cylinder, 172. Second detection probe, 173. Second support cylinder, 1731. Second slot, 174. Second spring, 175. Second support ring, 1751. Second plug-in part, 176. Second wire, 18. Push-out mechanism, 181. L-shaped plate, 182. Push cylinder, 183. Rubber seat, 19. Support plate, 20. Current transformer body. Detailed Implementation

[0018] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. The present invention will be further described in detail below with reference to the accompanying drawings.

[0021] like Figure 1-6 As shown, the present invention provides a current transformer testing fixture for metering, comprising an L-shaped support plate 1, on which a loading area 11, a testing area 12, and a unloading area 13 are sequentially arranged; the loading area 11 is provided with a conveyor belt 111, and the unloading area 13 is provided with an output belt 131; the testing area 12 is provided with a transfer mechanism 14 and a clamping mechanism 15; the transfer mechanism 14 is symmetrically arranged on both sides of the L-shaped support plate 1, and is used to transfer the current transformer body 20 conveyed by the conveyor belt 111 to the testing station of the testing area 12; the clamping mechanism 15 is symmetrically provided with a first The detection component 16 has two parts: a first detection component 16 for clamping the P1 and P2 terminals of the current transformer body 20 and detecting the electrical performance of the P1 and P2 terminals; and a second detection component 17 for elastically contacting the S1 and S2 terminals of the current transformer body 20 and detecting the electrical performance of the S1 and S2 terminals. The partitioned design enables automated loading, testing, and unloading of the current transformers. The two sets of detection components are used to specifically connect to the P1 / P2 and S1 / S2 terminals of the transformer, ensuring the comprehensiveness and stability of the electrical performance testing. A current transformer testing fixture for metering also includes a push-out mechanism 18. The push-out mechanism 18 includes an L-shaped plate 181 fixed to an L-shaped support plate 1, a push cylinder 182 mounted on the L-shaped plate 181, and a rubber seat 183 fixed to the piston end of the push cylinder 182. The rubber seat 183 is set at the testing station in the testing area 12. When the push cylinder 182 is activated, its piston end extends and drives the rubber seat 183 to move. Without damaging the transformer body, the tested workpiece is quickly pushed to the output belt 131, realizing automated unloading and improving turnover efficiency.

[0022] like Figure 1-3As shown, the transfer mechanism 14 includes a first control cylinder 141 hinged to the L-shaped plate 181, a second control cylinder 142 hinged to the unloading area 13 side of the L-shaped support plate 1, and symmetrically arranged Y-shaped rods 143; the centers of the two sets of Y-shaped rods 143 are respectively rotatably connected to the L-shaped support plate 1 via rotating shafts; of the two sets of Y-shaped rods 143, the driving end of one set is hinged to the piston end of the first control cylinder 141, and the driving end of the other set is hinged to the piston end of the second control cylinder 142; the driven ends of both sets of Y-shaped rods 143 are... A roller 144 is rotatably connected; the roller 144 contacts the side wall of the current transformer body 20 and, under the coordinated drive of the first control cylinder 141 and the second control cylinder 142, pushes the current transformer body 20 to move along the transfer direction. The first control cylinder 141 and the second control cylinder 142 serve as power sources, and their coordinated telescopic motion drives two sets of Y-shaped rods 143 to rotate around their central axes. The Y-shaped rods 143 convert the linear input of the cylinder piston into a composite motion of a specific trajectory of the driven roller 144. The symmetrically arranged rollers 144 act on both sides of the workpiece simultaneously, forming a stable clamping and pushing posture, ensuring that the workpiece will not deviate or jam during the transfer process. The introduction of the roller 144 transforms sliding friction into rolling friction, greatly reducing the transfer resistance and workpiece surface wear, and ultimately achieving accurate, stable, and low-damage transfer of the workpiece from the conveyor belt 111 to the inspection station.

[0023] like Figure 1 and 2 As shown, a side support plate 10 is fixed to the side of the L-shaped support plate 1; inverted U-plates 101 are symmetrically fixed on the side support plate 10 and the L-shaped support plate 1; the clamping mechanism 15 is installed between the two sets of inverted U-plates, and a stable portal installation structure is formed by the side support plate 10 and the inverted U-plates 101, providing a symmetrical and rigid installation reference for the clamping mechanism 15, ensuring the coaxiality and stability of the clamping mechanism 15 when it moves, and avoiding the impact of installation reference offset on detection accuracy; Clamping mechanism 15 includes a set of inverted U-shaped clamps fixed therein. The system includes a rotary motor 151 on the outer wall of the plate, a bidirectional lead screw 152 rotatably disposed between two sets of inverted U-plates 101, a lead screw pair 153 threaded to one end of the bidirectional lead screw 152, a lead screw pair 2 154 threaded to the other end of the bidirectional lead screw 152, a telescopic cylinder assembly 155 vertically fixed to the bottom of the lead screw pair 153 and the lead screw pair 2 154 respectively, and a support block 156 fixedly connected to the piston end of the telescopic cylinder assembly 155. The output shaft of the rotary motor 151 rotates through the inverted U-plate 101 and is coaxially fixedly connected to the end of the bidirectional lead screw 152. The first detection component 16 is fixed to the side of the support block 156 facing the current transformer body 20. The rotary motor 151 drives the bidirectional lead screw 152 to rotate, and the reverse thread characteristic of the bidirectional lead screw 152 drives the two sets of lead screw pairs to move synchronously in opposite directions. With the vertical telescopic adjustment of the telescopic cylinder assembly 155, the first detection component 16 can detect the current transformers P1 / P2. Precise alignment and stable clamping of the terminals meet the adaptation requirements of current transformers of different specifications; A limiting rod 157 parallel to the bidirectional lead screw 152 is fixedly installed between the two sets of inverted U-plates 101. The two ends of the limiting rod 157 respectively movably pass through the lead screw pair 153 and the lead screw pair 2 154, thereby forming a guiding constraint to prevent the lead screw pair 153 and the lead screw pair 2 154 from rotating synchronously with the bidirectional lead screw 152, ensuring that the lead screw pair 153 and the lead screw pair 2 154 only move smoothly along the axial direction, thereby improving the action accuracy and repeatability of the clamping mechanism 15.

[0024] like Figure 1 , 2As shown in Figures 5 and 6, the first detection assembly 16 includes a first detection cylinder 161 fixed on the support block 156, a first detection probe 162 with one end electrically connected to the first detection cylinder 161 and the other end passing through the support block 156, a first support cylinder 163 fixedly disposed on the side of the support block 156 facing the current transformer body 20 and sleeved outside the first detection probe 162, a first spring 164 sleeved outside the first detection probe 162 and fixed at one end to the support block 156, and a first support ring fixed at the other end of the first spring 164. 165; A first supporting ring 165 is sleeved outside the first detection probe 162 and slidably inserted into the first supporting cylinder 163; the inner wall of the first supporting cylinder 163 is symmetrically provided with first slots 1631, and the outer peripheral wall of the first supporting ring 165 is symmetrically fixed with first insertion parts 1651, which slidably insert into the first slots 1631; a first wire 166 is connected to the first detection cylinder 161, and the first wire 166 is electrically connected to an external detection device for transmitting the P1 collected by the first detection probe 162. The electrical signals of the P1 and P2 terminals are transmitted to external testing equipment. During clamping, the first support ring 165 first contacts the end face of the transformer. The elastic compression of the first spring 164 absorbs the clamping impact force. At the same time, the first insertion part 1651 cooperates with the first slot 1631 to ensure that the support ring slides smoothly and avoids damage to the test probe due to hard contact. After the test probe contacts the P1 / P2 terminals, the electrical signals are transmitted to the external equipment through the first test cylinder 161 and the wire to realize performance testing.

[0025] like Figure 1-4As shown, a support plate 19 is fixed on the L-shaped support plate 1; two sets of second detection components 17 are symmetrically arranged and fixedly installed on the support plate 19. The support plate 19 provides a stable mounting base for the second detection components 17. The two sets of symmetrically arranged second detection components 17 precisely correspond to the positions of the current transformer S1 / S2 terminals, ensuring effective docking between the probe and the terminal during detection, and providing structural protection for elastic contact detection; the second detection component 17 includes a second detection cylinder 171 fixed on the support plate 19, and a second detection probe 172 with one end electrically connected to the second detection cylinder 171 and the other end penetrating through the support plate 19. The system comprises a second support cylinder 173 fixedly mounted on the top of the support plate 19 and sleeved outside the second detection probe 172; a second spring 174 sleeved outside the second detection probe 172 and fixed at one end to the top of the support plate 19; and a second support ring 175 fixed at the other end of the second spring 174. The second support ring 175 is sleeved outside the second detection probe 172 and slidably inserted into the second support cylinder 173. A second wire 176 is connected to the second detection cylinder 171, which is electrically connected to an external detection device to transmit the electrical signals of the S1 and S2 terminals collected by the second detection probe 172 to the external detection device. The elastic force of the second spring 174 ensures that the second support ring 175 drives the detection probe to always be in contact with the S1 / S2 terminals of the transformer, achieving elastic contact and adapting to small dimensional deviations of the terminals. The sliding fit between the second support cylinder 173 and the support ring ensures smooth probe movement. The detection signal is transmitted to the external device through the second detection cylinder 171 and the wire to complete the electrical performance detection of the S1 / S2 terminals. The inner wall of the second support cylinder 173 is symmetrically provided with second slots 1731, and the outer peripheral wall of the second support ring 175 is symmetrically fixed with second insertion parts 1751. The second insertion parts 1751 and the second slots 1731 are slidably inserted into each other. Through the sliding engagement of the second insertion parts 1751 and the second slots 1731, the circumferential rotation of the second support ring 175 is restricted, ensuring that the second detection probe 172 always maintains the correct detection posture, avoiding poor contact due to probe torsion, and improving the stability and accuracy of the detection signal.

[0026] In practical use First, the operator simply places the current transformer body 20 to be inspected onto the conveyor belt 111 in the loading area 11. After the conveyor belt 111 transports it to the designated position, the transfer mechanisms 14 on both sides are activated. This mechanism is driven by two cylinders to work together to drive two sets of Y-shaped rods 143, which in turn drive the rollers 144 to smoothly and accurately transfer the current transformer body 20 to the core station of the testing area 12. At this time, the second detection probe 172 automatically makes elastic contact with the S1 and S2 terminals of the current transformer body 20 and simultaneously performs electrical performance testing on that side of the terminal.

[0027] Next, the clamping mechanism 15 begins operation. The rotary motor 151 located above drives the bidirectional lead screw 152, causing the first detection components 16 on both sides to move synchronously towards each other, firmly clamping the P1 and P2 terminals of the current transformer body 20 from both sides. Simultaneously with clamping, the spring buffer structure inside the first detection component 16 ensures stable and non-destructive electrical contact between the detection probe and the terminals, and immediately begins testing the electrical performance of the P1 and P2 terminals. All test data is transmitted in real time via wires to external testing equipment for analysis and judgment.

[0028] Finally, efficient and non-destructive automatic unloading is completed. After all inspection items are completed, the clamping mechanism 15 and the second inspection component 17 automatically reset, releasing the current transformer body 20. At this time, the push cylinder 182 of the ejection mechanism 18 actuates, driving the front rubber seat 183 to smoothly advance forward, pushing the inspected transformer from the inspection station onto the output belt 131 of the unloading area 13, whereby the output belt 131 sends it to the next stage. The entire process requires no manual intervention, and the steps are seamlessly connected, greatly improving inspection efficiency while effectively avoiding product scratches or bumps that may occur during manual operation.

[0029] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A current transformer testing fixture for metering, comprising an L-shaped support plate (1), on which a feeding area (11), a testing area (12), and a discharging area (13) are sequentially arranged; the feeding area (11) is provided with a conveyor belt (111), and the discharging area (13) is provided with an output belt (131), characterized in that: The detection area (12) is equipped with a transfer mechanism (14) and a clamping mechanism (15). The transfer mechanism (14) is symmetrically arranged on both sides of the L-shaped support plate (1); The clamping mechanism (15) is symmetrically provided with a first detection component (16); The L-shaped support plate (1) is also provided with a second detection component (17).

2. The current transformer testing fixture for metering according to claim 1, characterized in that: It also includes the launching agency (18); The ejection mechanism (18) includes an L-shaped plate (181) fixed to the L-shaped support plate (1), a push cylinder (182) mounted on the L-shaped plate (181), and a rubber seat (183) fixed to the piston end of the push cylinder (182). The rubber seat (183) corresponds to the detection station setting of the detection area (12).

3. The current transformer testing fixture for metering according to claim 2, characterized in that: The transfer mechanism (14) includes a first control cylinder (141) hinged to the L-shaped plate (181), a second control cylinder (142) hinged to the unloading area (13) side of the L-shaped support plate (1), and a Y-shaped rod (143) symmetrically arranged. The centers of the two sets of Y-shaped rods (143) are respectively rotatably connected to the L-shaped support plate (1) via a rotating shaft; Of the two sets of Y-shaped rods (143), the driving end of one set is hinged to the piston end of the first control cylinder (141), and the driving end of the other set is hinged to the piston end of the second control cylinder (142); the driven ends of both sets of Y-shaped rods (143) are rotatably connected to rollers (144). The roller (144) is used to contact the side wall of the current transformer body (20) and, under the coordinated drive of the first control cylinder (141) and the second control cylinder (142), pushes the current transformer body (20) to move along the transfer direction.

4. The current transformer testing fixture for metering according to claim 1, characterized in that: The L-shaped support plate (1) is fixed with a side support plate (10) on its side. The side support plate (10) and the L-shaped support plate (1) are symmetrically fixed with inverted U-plates (101); The clamping mechanism (15) is installed between two sets of inverted U-plates (101).

5. The current transformer testing fixture for metering according to claim 4, characterized in that: The clamping mechanism (15) includes a rotary motor (151) fixed to the outer wall of one of the inverted U-plates (101), a bidirectional lead screw (152) rotatably disposed between the two sets of inverted U-plates (101), a lead screw pair one (153) threaded to one end of the bidirectional lead screw (152), a lead screw pair two (154) threaded to the other end of the bidirectional lead screw (152), a telescopic cylinder assembly (155) vertically fixed to the bottom of the lead screw pair one (153) and the lead screw pair two (154) respectively, and a support block (156) fixedly connected to the piston end of the telescopic cylinder assembly (155). The output shaft of the rotary motor (151) rotates through the inverted U-plate (101) and is coaxially fixedly connected to the end of the bidirectional lead screw (152); The first detection component (16) is fixed to the side of the support block (156) facing the current transformer body (20).

6. The current transformer testing fixture for metering according to claim 5, characterized in that: A limiting rod (157) parallel to the bidirectional lead screw (152) is also fixedly provided between the two sets of inverted U-plates (101). The two ends of the limiting rod (157) respectively movably pass through lead screw pair one (153) and lead screw pair two (154).

7. The current transformer testing fixture for metering according to claim 5, characterized in that: The first detection component (16) includes a first detection cylinder (161) fixed on the support block (156), a first detection probe (162) with one end electrically connected to the first detection cylinder (161) and the other end passing through the support block (156), a first support cylinder (163) fixed on the side of the support block (156) facing the current transformer body (20) and sleeved outside the first detection probe (162), a first spring (164) sleeved outside the first detection probe (162) and fixed at one end to the support block (156), and a first support ring (165) fixed at the other end of the first spring (164); the first support ring (165) is sleeved outside the first detection probe (162) and slidably inserted into the first support cylinder (163); The inner wall of the first support cylinder (163) is symmetrically provided with a first slot (1631), and the outer peripheral wall of the first support ring (165) is symmetrically fixed with a first insertion part (1651), and the first insertion part (1651) and the first slot (1631) are slidably inserted into each other. The first detection cylinder (161) is connected to a first wire (166), which is electrically connected to an external detection device.

8. The current transformer testing fixture for metering according to claim 1, characterized in that: A support plate (19) is fixed on the L-shaped support plate (1); The second detection component (17) is symmetrically arranged in two sets and is fixedly installed on the support plate (19).

9. A metering current transformer testing fixture according to claim 8, characterized in that: The second detection assembly (17) includes a second detection cylinder (171) fixed on the support plate (19), a second detection probe (172) with one end electrically connected to the second detection cylinder (171) and the other end passing through the support plate (19), a second support cylinder (173) fixedly disposed on the top of the support plate (19) and sleeved outside the second detection probe (172), a second spring (174) sleeved outside the second detection probe (172) and fixed at one end to the top of the support plate (19), and a second support ring (175) fixed at the other end of the second spring (174). The second support ring (175) is sleeved outside the second detection probe (172) and is slidably inserted into the second support cylinder (173); The second detection cylinder (171) is connected to a second wire (176), which is electrically connected to an external detection device.

10. A metering current transformer testing fixture according to claim 9, characterized in that: The inner wall of the second support cylinder (173) is symmetrically provided with a second slot (1731), and the outer peripheral wall of the second support ring (175) is symmetrically fixed with a second insertion part (1751), and the second insertion part (1751) and the second slot (1731) are slidably inserted into each other.

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