A performance testing device for a current transformer production

Abstract

This application discloses a performance testing device for current transformer production, belonging to the technical field of testing equipment. It includes a conveyor belt, a lifting mechanism, a protective mechanism, and a pin. The current transformer body is placed on top of the conveyor belt, and a protective mechanism is provided on one side of the conveyor belt for positioning the current transformer body. The beneficial effects of this application are: the device achieves automatic insertion and retraction of the pins through precise mechanical linkage and pneumatic control, while effectively isolating the pins from external environmental corrosion. Under the elastic restoring force of the third spring, the pins quickly retract into the sliding housing, effectively isolating the pins from contact with external air, avoiding corrosion from external moisture and dust, ensuring the cleanliness of the pins and the accuracy of the test. Through this integrated design of automation and protection, the testing device not only improves testing efficiency but also extends the service life of the pins, ensuring the long-term stable operation of the testing system.

Description

Technical Field

[0001] This application relates to the field of testing equipment technology, and in particular to a performance testing device for the production of current transformers. Background Technology

[0002] The performance testing equipment for current transformer production is mainly used to comprehensively test and evaluate various performance indicators of current transformers during the production process to ensure that they meet quality standards and safety requirements.

[0003] A search revealed that Chinese Patent Publication No. CN117110970B discloses a performance testing device and method for current transformer production. This device automatically contacts and separates the electrical contacts and test pins from the terminals of the voltage and current transformers, eliminating the need for manual plugging and unplugging of the power supply and thus preventing electric shock to workers. Furthermore, by using multiple sets of electrical contacts and test pins to test the voltage and current transformers during rotation, a large number of voltage and current transformers can be tested alternately, thereby improving testing efficiency and reducing labor costs. However, the exposed pins of the existing device may lead to performance degradation due to oxidation and corrosion, shortening the service life of the equipment.

[0004] A search revealed that Chinese Patent Publication No. CN119199698B discloses a performance testing device for current transformer production. This device utilizes a positioning adjustment mechanism and an anti-jamming intermittent drop mechanism. It can automatically test current sensors by simply placing multiple current sensors into the feeding chamber simultaneously, eliminating the need for manual placement of the current sensors and alignment of their pins with the detection probe. This is more convenient and improves testing efficiency. However, the device uses a single type of test pin, which requires changing different pins when testing different models of current transformers, making the replacement process somewhat cumbersome. Summary of the Invention

[0005] One of the objectives of this application is to provide a performance testing device for current transformer production, which addresses the problems that the exposed pins of existing devices may lead to oxidation and corrosion, and that different pins need to be replaced when testing different models of current transformers, making replacement cumbersome.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: a performance testing device for current transformer production, comprising: a conveyor belt, a lifting mechanism, a protective mechanism, and a push pin. A current transformer body is placed on top of the conveyor belt. A protective mechanism is provided on one side of the conveyor belt for positioning the current transformer body. A vertical plate is provided on one side of the protective mechanism. A lifting mechanism is provided on the bottom side of the vertical plate. Two first cylinders are provided on one side of the lifting mechanism. Push pins are fitted onto the external extension ends of the two first cylinders. The push pins are electrically connected to an external testing terminal. A switching mechanism is provided at one bottom end of the push pin. The switching mechanism is installed on one side of the lifting mechanism and is used for switching the push pins. Two switching mechanisms are provided. A third cylinder is embedded inside one bottom end of the vertical plate. A mounting plate is provided on one side of the conveyor belt. The mounting plate is connected to one side of the conveyor belt by screws. Two second cylinders are embedded inside the mounting plate. Push plates are connected to the external extension ends of the two second cylinders by screws.

[0007] Preferably, the lifting mechanism includes a lifting frame. One side of the lifting frame has a slot, and the inside of the slot slides in contact with the outer wall of the slide rod. The bottom and top ends of the slide rod are welded to a vertical plate. The bottom end of the vertical plate is rotatably connected to the bottom end of a first threaded rod. The top end of the first threaded rod is welded to a turntable. The outer wall of the first threaded rod is threadedly connected to the lifting frame. The other end of the lifting frame is welded to the outer wall of a first cylinder. The lifting mechanism, through the cooperation of the lifting frame, slide rod, first threaded rod, and turntable, enables the pin to move up and down. By rotating the turntable, the first threaded rod can be rotated, causing the lifting frame, which is threaded to it, to move up and down along the slide rod, thereby adjusting the height of the pin to accommodate current transformer bodies of different heights. This design not only improves the flexibility and adjustability of the device but also ensures that the pin can be accurately inserted into the slot of the current transformer body for testing, improving the accuracy and reliability of the test.

[0008] Preferably, the protective mechanism includes an adjustment mechanism and a buffer mechanism. The buffer mechanism is located below the switching mechanism, and the adjustment mechanism is located on both sides of the protective mechanism. The adjustment mechanism is used for adjusting the protective mechanism. The buffer mechanism is installed on the bottom surface of the upright plate, and its top surface is flush with the conveyor belt surface. By setting the adjustment mechanism and the buffer mechanism, the protective mechanism achieves the positioning and protection functions of the current transformer body. The buffer mechanism can support and buffer the current transformer body, preventing damage to the current transformer body or bending of the pins due to excessive pressure during pin insertion. The adjustment mechanism can adjust the protective mechanism to accommodate current transformer bodies of different sizes and models, enhancing the versatility and applicability of the device. This design not only improves the safety and reliability of the testing process but also extends the service life of the equipment and improves testing efficiency.

[0009] Preferably, the buffer mechanism includes a bracket with a U-shaped structure. The inner walls of the bracket slide in contact with the sides of the current transformer body. Protruding lugs are provided on both sides of the bracket, and circular slots are formed at the ends of the lugs. The inner walls of these circular slots slide in contact with the outer walls of the second threaded rod. One bottom end of the second threaded rod is welded to one bottom end of the upright plate, and an annular protrusion is provided on the outer wall of the top end of the second threaded rod. A first spring is fitted onto the outer wall of the top end of the second threaded rod. The U-shaped structure of the bracket allows it to tightly fit against both sides of the current transformer body, providing stable... The bracket provides support and positioning. When the pin is inserted into the current transformer body, the bracket effectively buffers the pressure applied by the pin, preventing damage to the current transformer body due to excessive force, thereby improving the safety and reliability of the testing process. The bracket is connected to the upright plate through the second threaded rod and provides elastic support through the first spring. When the pin is inserted into the current transformer body, the current transformer body applies downward pressure to the bracket, which compresses the first spring to achieve buffering. This elastic buffering mechanism can effectively reduce the impact force when the pin is inserted, protecting the pin and the current transformer body from damage.

[0010] Preferably, the adjustment mechanism includes a knob fitted around the outside of the second threaded rod. The outer wall of the second threaded rod is threadedly connected to the inner wall of the knob. The knob is located at one end of the bottom of the spring. Four second threaded rods are provided, each located at one of the four ends of the bracket. The adjustment mechanism, through the threaded engagement of the knob and the second threaded rod, realizes the adjustment function of the buffer mechanism. It can flexibly adjust the position and pressure of the bracket according to the size of the current transformer body and the testing requirements, thereby ensuring that the current transformer can be stably supported and protected during the testing process. At the same time, it improves the adaptability and versatility of the device, enabling it to better meet the testing requirements of different types of current transformers.

[0011] Preferably, the switching mechanism includes a top plate, a connecting column at the bottom of the top plate, one top end of the connecting column welded to the top plate, and one bottom end of the connecting column welded to the top of the adjusting block. A sliding shell is provided between the top plate and the adjusting block. The top and bottom of the sliding shell slide in contact with the top plate and the adjusting block, respectively. Multiple diameter pins are provided inside the sliding shell. The pins slide in contact with the inside of the adjusting block. A limit block is welded to the top end of each pin. A third spring is fitted around the pin. The switching mechanism, through the cooperation of the top plate, connecting column, adjusting block, sliding shell, and pins of multiple diameters, realizes the pin switching function. By rotating the adjusting block, pins of different diameters inside the sliding shell can be aligned with the top pin, thus adapting to the testing requirements of different types of current transformers. Frequent pin replacement is unnecessary, greatly improving testing efficiency and the versatility of the device. Simultaneously, the third spring outside the pin can retract the pin into the sliding shell after testing, preventing the pin from being exposed and subjected to oxidation or corrosion, thus extending the pin's service life.

[0012] Preferably, the top plate has slots at its top, and these slots are distributed in an annular, equidistant pattern. The slots at the top of the top plate slide in contact with the outer wall of the ejector pin. One bottom end of the ejector pin is tightly fitted to the top of the limiting block. The top of the limiting block has a circular protrusion structure, which is embedded inside the slots at the top of the top plate. Through the sliding cooperation between the annular, equidistant slots at the top of the top plate and the ejector pin, and the embedded relationship between the limiting block and the slots at the top plate, it is ensured that the ejector pin can accurately align with pins of different diameters and push them for testing. This not only improves the stability and reliability of pin switching, but also further enhances the positioning accuracy of the pins during the switching process through the circular protrusion structure of the limiting block, avoiding test errors caused by positional deviations, thereby improving the performance and accuracy of the entire testing device.

[0013] Preferably, two adjusting blocks are provided. The outer walls of the two adjusting blocks are provided with teeth that mesh with each other. The inner walls of the adjusting blocks are also provided with teeth in a ring-shaped, evenly spaced arrangement. These inner teeth mesh with the bottom of a toothed ring, which is also provided with teeth. A second spring is positioned above the toothed ring and fitted onto the outside of a sliding housing. The top outer side of the sliding housing is connected to a lifting frame via bolts. The meshing of the outer teeth of the two adjusting blocks with the inner teeth of the toothed ring achieves the desired needle-like effect. The synchronous movement and precise positioning during pin switching are achieved by applying a certain torque to disengage the gear ring from the adjusting block when pin switching is required. The adjusting block then rotates the pin, allowing different pin models to be aligned with the top pin. After switching, the second spring pushes the gear ring to re-engage with the adjusting block, fixing the position of the adjusting block and ensuring the stability of the pin during testing. In addition, the sliding housing and the lifting frame are connected by bolts, ensuring the structural stability of the entire switching mechanism. This allows the pin to maintain an accurate position during lifting, improving the reliability and applicability of the testing device.

[0014] Preferably, the outer wall of the sliding housing has grooves that are distributed in an annular, equally spaced pattern. The outer wall of the sliding housing slides in contact with the inner wall of the toothed ring. The inner wall of the toothed ring has protruding structures that are distributed in an annular, equally spaced pattern. The grooves on the outer wall of the sliding housing and the protruding structures on the inner wall of the toothed ring cooperate with each other to ensure that the toothed ring slides smoothly on the outer wall of the sliding housing while maintaining a precise relative position. This improves the stability and reliability of the switching mechanism during operation and avoids test errors caused by loosening or misalignment between components.

[0015] Compared with the prior art, the beneficial effects of this application are as follows:

[0016] (1) This device achieves automatic insertion and retraction of the pins through precise mechanical linkage and pneumatic control, while effectively isolating the pins from external environmental corrosion. Specifically, the current transformer body is precisely transported to the top of the bracket via a conveyor belt, and under the action of the bracket's positioning device, it ensures that the test slot inside is precisely aligned with the position of the subsequent test pin. At this time, the first cylinder is in a retracted state, the push rod is in a high position, the push pin is in a ready position, and the pin is completely enclosed inside the sliding shell, with the third spring providing initial elastic support. When the test begins, the first cylinder extends in a controlled manner, pushing the push rod downward through the slot on the top plate surface, thereby driving the push pin to move downward. After the push pin passes through the bottom of the adjusting block, it precisely pushes the pin downward, allowing it to pass through the slot. The test pin is inserted into the test slot inside the current transformer body, completing the insertion action. After the pin is inserted into the current transformer body, the testing system begins to detect various parameters of the current transformer. After the test is completed, the first cylinder retracts in a controlled manner, driving the push rod to move upward. At this time, under the elastic restoring force of the third spring, the pin quickly retracts into the sliding shell. The structural design of the sliding shell ensures that the pin can be completely sealed inside, thereby effectively isolating the pin from contact with the outside air, avoiding corrosion from external moisture and dust, and ensuring the cleanliness of the pin and the accuracy of the test. Through this integrated design of automation and protection, the testing device not only improves the testing efficiency but also extends the service life of the pin, ensuring the long-term stable operation of the testing system.

[0017] (2) Various types of pins are set inside the sliding housing to adapt to different specifications of current transformer aperture. When a certain torque is applied by rotating the adjusting block, the toothed ring will disengage from the adjusting block, thus allowing the toothed ring to move upward. During this process, the adjusting blocks mesh with each other through the meshing teeth to achieve synchronous rotation. As the adjusting block rotates, the pins inside the sliding housing will also rotate, thus switching to different types of pins aligned with the top rod. When the adjusting block rotates to the appropriate position, the second spring will push the toothed ring downward to re-engage with the meshing teeth on the inner side of the adjusting block, thereby fixing the position of the adjusting block. At this time, the top rod can push the pins of different types downward to adapt to different types of current transformer aperture. This design greatly improves the applicability of the device, enabling it to flexibly meet the testing needs of various specifications of current transformers.

[0018] (3) By rotating the turntable, the turntable can drive the first threaded rod connected to it to rotate. Since the first threaded rod and the lifting frame are connected by a thread, the rotation of the first threaded rod will drive the lifting frame to move up and down along its axis. The up and down movement of the lifting frame will further drive the pin to move up and down accordingly, thereby realizing the adjustment of the pin height to adapt to the current transformer body of different heights. When the pin is inserted into the current transformer body downwards, if the pin pressure is too high, the current transformer body will press down on the bracket, and the bracket will then press down on the first spring. The elastic effect of the first spring can provide elasticity to the bracket. The device provides support to buffer the pressure on the pins, preventing them from bending or deforming due to excessive pressure, thus ensuring the lifespan of the pins and the reliability of the test. Furthermore, by rotating a knob, the device can rotate outside the second threaded rod, causing it to move axially along the second threaded rod and compress the first spring. This allows adjustment of the compression level of the first spring, thereby changing the pressure on the pins. This design not only effectively adjusts the pin pressure but also allows for flexible adjustments based on different test requirements and current transformer specifications, greatly improving the adjustability and applicability of the device.

[0019] This solves the problems of existing devices where exposed pins may oxidize or corrode, and the need to replace different pins when testing different models of current transformers, which makes replacement cumbersome. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a side view of the structure of the present invention.

[0022] Figure 3 This is a top view of the structure of the present invention.

[0023] Figure 4 This is a front view structural diagram of the present invention.

[0024] Figure 5 This is a schematic diagram of the ejector pin structure of the present invention.

[0025] Figure 6 This is a schematic diagram of the switching mechanism structure of the present invention.

[0026] Figure 7 This is a schematic diagram of the internal structure of the switching mechanism of the present invention.

[0027] Figure 8 This is a schematic diagram of the adjusting block structure of the present invention.

[0028] Figure 9 This is a schematic diagram of the toothed ring structure of the present invention.

[0029] In the diagram: 1. Conveyor belt; 2. Current transformer body; 3. Vertical plate; 4. Lifting mechanism; 401. Lifting frame; 402. Slide rod; 403. First threaded rod; 404. Turntable; 5. First cylinder; 6. Switching mechanism; 601. Top plate; 602. Adjusting block; 603. Gear ring; 604. Sliding shell; 605. Second spring; 606. Connecting column; 607. Pin; 608. Limiting block; 609. Third spring; 7. Mounting plate; 8. Second cylinder; 9. Protective mechanism; 901. Bracket; 902. Second threaded rod; 903. First spring; 904. Knob; 10. Push plate; 11. Third cylinder; 12. Ejector pin. Detailed Implementation

[0030] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and should not be construed as limiting the specific protection scope of this application.

[0032] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0033] Example 1:

[0034] One preferred embodiment of this application, such as Figures 1 to 9As shown, a performance testing device for current transformer production includes: a conveyor belt 1, a lifting mechanism 4, a protective mechanism 9, and a pin 12. A current transformer body 2 is placed on top of the conveyor belt 1. A protective mechanism 9 is located on one side of the conveyor belt 1, used for positioning the current transformer body 2. A vertical plate 3 is located on one side of the protective mechanism 9, and a lifting mechanism 4 is located on the bottom side of the vertical plate 3. Two first cylinders 5 are located on one side of the lifting mechanism 4. Pins 12 are externally fitted onto the telescopic ends of the bottom of the two first cylinders 5. The pins 12 are electrically connected to an external testing terminal. A switching mechanism 6 is located at one bottom end of the pin 12. The switching mechanism 6 is installed on one side of the lifting mechanism 4. The switching mechanism 6 is used for switching the pin 12. There are two switching mechanisms 6. A third cylinder 11 is embedded in the bottom end of the vertical plate 3. A mounting plate 7 is provided on one side of the conveyor belt 1. The mounting plate 7 is connected to one side of the conveyor belt 1 by screws. A second cylinder 8 is embedded in the mounting plate 7. There are two second cylinders 8. The extension ends of the two second cylinders 8 are connected to push plates 10 by screws. The switching mechanism 6 includes a top plate 601. A connecting column 606 is provided at the bottom of the top plate 601. One end of the connecting column 606 is welded to the top plate 601. One end of the connecting column 606 is connected to the adjusting block 602. The top is welded, and a sliding shell 604 is provided between the top plate 601 and the adjusting block 602. The top and bottom of the sliding shell 604 slide in contact with the top plate 601 and the adjusting block 602 respectively. The sliding shell 604 is provided with pins 607 of various diameters. The pins 607 slide in contact with the inside of the adjusting block 602. A limit block 608 is welded to one end of the top of the pins 607, and a third spring 609 is fitted on the outside of the pins 607. The current transformer body 2 at the top of the conveyor belt 1 is conveyed to the top of the bracket 901 by the second cylinder 8 and the push plate 10. Then, under the push of the first cylinder 5, the push rod can pass downward through the hole groove on the surface of the top plate 601 to push the push pin 12. The needle moves downward, allowing the ejector pin 12 to pass through the bottom of the adjusting block 602, pushing the pin 607 downward so that it can be inserted into the slot inside the current transformer body 2 for testing. After the test, the third cylinder 11 pushes the current transformer body 2 back to the conveyor belt surface, and the first cylinder 5 drives the ejector rod to retract. Under the action of the third spring 609, the pin 607 can retract into the sliding shell 604, which helps to seal the pin 607 inside the sliding shell 604, thus isolating the pin 607 from the outside air and preventing external moisture and dust from corroding the pin 607.

[0035] Example 2:

[0036] One preferred embodiment of this application, such as Figures 1 to 5As shown, a performance testing device for current transformer production includes a top plate 601 with slots at its top, the slots being annularly and evenly spaced. These slots slide in contact with the outer wall of a pin 12. One bottom end of the pin 12 is tightly fitted to the top of a limiting block 608. The limiting block 608 has a circular protrusion at its top, which is embedded within the slots at the top of the top plate 601. Two adjusting blocks 602 are provided, each with teeth distributed on its outer wall. The outer walls of the adjusting block 602 are meshed with each other by teeth. The inner wall of the adjusting block 602 has teeth distributed in a ring-shaped, evenly spaced pattern. These teeth mesh with the bottom of the toothed ring 603, which also has teeth distributed at its bottom. A second spring 605 is positioned above the toothed ring 603 and is fitted onto the outside of the sliding shell 604. The top outer side of the sliding shell 604 is connected to the lifting frame 401 by bolts. The outer wall of the sliding shell 604 has grooves distributed in a ring-shaped, evenly spaced pattern. The inner wall of the sliding housing 604 slides in contact with the inner wall of the toothed ring 603. The inner wall of the toothed ring 603 has a raised structure, which is distributed in a ring at equal intervals. Multiple pins 607 of various sizes are provided inside the sliding housing 604. By rotating the adjusting block 602, when a certain torque is applied to the adjusting block 602, the toothed ring 603 will disengage from the adjusting block 602, allowing the toothed ring 603 to move upward. The adjusting blocks 602 rotate synchronously with each other through meshing teeth. Simultaneously, the rotation of the adjusting blocks 602 drives the sliding housing 604. The internal pins 607 rotate, thereby switching between different internal pins 607 and aligning with the push rod. When the adjusting block 602 rotates to the appropriate position, under the action of the second spring 605, the second spring 605 can push the toothed ring 603 downward to engage with the meshing teeth on the inner side of the adjusting block 602, so that the position of the adjusting block 602 can be fixed, thereby allowing the push rod to push different types of pins 607 downward, thus switching between different types of pins 607 to suit different types of current transformer apertures, greatly improving the applicability of the device.

[0037] Example 3:

[0038] One preferred embodiment of this application, such as Figures 1 to 7As shown, a performance testing device for current transformer production includes a lifting mechanism 4 comprising a lifting frame 401. The lifting frame 401 has a slot on one side, and the inside of the slot slides in contact with the outer wall of a sliding rod 402. The bottom and top ends of the sliding rod 402 are welded to a vertical plate 3. One bottom end of the vertical plate 3 is rotatably connected to one bottom end of a first threaded rod 403. One top end of the first threaded rod 403 is welded to a turntable 404. The outer wall of the first threaded rod 403 is threadedly connected to the lifting frame 401. The other end of the lifting frame 401 is welded to the outer wall of a first cylinder 5. A protective mechanism 9 includes an adjustment mechanism and a buffer mechanism. The buffer mechanism is located below the switching mechanism 6. The mechanism is located on both sides of the protective mechanism 9. The adjustment mechanism is used to adjust the protective mechanism 9. The buffer mechanism is installed on the bottom surface of the vertical plate 3, and the top surface of the buffer mechanism is flush with the surface of the conveyor belt 1. The buffer mechanism includes a bracket 901, which has a U-shaped structure. The inner walls of the bracket 901 slide in contact with the two sides of the current transformer body 2. The bracket 901 has protruding ear plates on both sides, and the ends of the ear plates have circular slots. The inner walls of the circular slots slide in contact with the outer walls of the second threaded rod 902. One bottom end of the second threaded rod 902 is welded to one bottom end of the vertical plate 3, and the outer wall of the top end of the second threaded rod 902 has an annular protruding structure. A first spring 903 is fitted onto the outer wall of the top end of rod 902; the adjustment mechanism includes a knob 904, which is fitted onto the outside of the second threaded rod 902. The outer wall of the second threaded rod 902 is threadedly connected to the inner wall of the knob 904. The knob 904 is located at the bottom end of the spring. Four second threaded rods 902 are provided, and the four second threaded rods 902 are respectively located at the four ends of the bracket 901. By rotating the turntable 404, the turntable 404 can drive the first threaded rod 403 to rotate. While the first threaded rod 403 rotates, it can drive the lifting frame 401 to move up and down, and in turn, the lifting frame 401 can drive the pin 607 to move up and down. This allows for adaptation to current transformers of different heights. When pin 607 is inserted downwards into the current transformer body 2, if the pressure on pin 607 is too high, the current transformer body 2 will press down on the bracket 901, which in turn allows the bracket 901 to press down on the first spring 903. The first spring 903 provides elastic support to the bracket 901, which helps to prevent the pin 607 from bending due to excessive pressure. In addition, by rotating the knob 904, the knob 904 can rotate outside the second threaded rod 902, which allows the knob 904 to compress the first spring 903, thereby facilitating the adjustment of the pressure on pin 607 and improving the adjustability of the device.

[0039] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A performance testing device for current transformer production, characterized in that, include: The conveyor belt (1), lifting mechanism (4), protective mechanism (9), and ejector pin (12) are provided. A current transformer body (2) is placed on the top of the conveyor belt (1). A protective mechanism (9) is provided on one side of the conveyor belt (1). The protective mechanism (9) is used for positioning the current transformer body (2). A vertical plate (3) is provided on one side of the protective mechanism (9). A lifting mechanism (4) is provided on one side of the bottom of the vertical plate (3). A first cylinder (5) is provided on one side of the lifting mechanism (4). There are two first cylinders (5). An ejector pin (12) is fitted on the outside of the telescopic end of the bottom of the two first cylinders (5). The ejector pin (12) is connected to the external detection terminal. Electrical connection at the end, a switching mechanism (6) is provided at one end of the bottom of the ejector pin (12), the switching mechanism (6) is installed on one side of the lifting mechanism (4), the switching mechanism (6) is used for switching the ejector pin (12), there are two switching mechanisms (6), a third cylinder (11) is embedded in one end of the bottom of the upright plate (3), an mounting plate (7) is provided on one side of the conveyor belt (1), the mounting plate (7) is connected to one side of the conveyor belt (1) by screws, a second cylinder (8) is embedded in the mounting plate (7), there are two second cylinders (8), and a push plate (10) is connected to the outside of the telescopic end of the two second cylinders (8) by screws.

2. The performance testing device for current transformer production as described in claim 1, characterized in that: The lifting mechanism (4) includes a lifting frame (401). The lifting frame (401) has a slot on one side, and the slot is in sliding contact with the outer wall of the slide rod (402). The bottom and top ends of the slide rod (402) are welded to the upright plate (3). The bottom end of the upright plate (3) is rotatably connected to the bottom end of the first threaded rod (403). The top end of the first threaded rod (403) is welded to the turntable (404). The outer wall of the first threaded rod (403) is threadedly connected to the lifting frame (401). The other end of the lifting frame (401) is welded to the outer wall of the first cylinder (5).

3. The performance testing device for current transformer production as described in claim 1, characterized in that: The protective mechanism (9) includes an adjustment mechanism and a buffer mechanism. The buffer mechanism is located below the switching mechanism (6), and the adjustment mechanism is located on both sides of the protective mechanism (9). The adjustment mechanism is used for adjusting the protective mechanism (9). The buffer mechanism is installed on the bottom surface of the upright plate (3), and the top surface of the buffer mechanism is flush with the surface of the conveyor belt (1).

4. The performance testing device for current transformer production as described in claim 3, characterized in that: The buffer mechanism includes a bracket (901), which has a U-shaped structure. The inner walls of the bracket (901) slide in contact with the sides of the current transformer body (2). The bracket (901) has protruding ear plates on both sides, and the ends of the ear plates have circular slots. The inner walls of the circular slots slide in contact with the outer walls of the second threaded rod (902). The bottom end of the second threaded rod (902) is welded to the bottom end of the upright plate (3), and the top end of the second threaded rod (902) has an annular protruding structure on its outer wall. The top end of the second threaded rod (902) is fitted with a first spring (903).

5. The performance testing device for current transformer production as described in claim 3, characterized in that: The adjustment mechanism includes a knob (904), which is fitted onto the outside of the second threaded rod (902). The outer wall of the second threaded rod (902) is threadedly connected to the inner wall of the knob (904). The knob (904) is located at one end of the bottom of the spring. There are four second threaded rods (902), which are respectively located at the four ends of the bracket (901).

6. The performance testing device for current transformer production as described in claim 1, characterized in that: The switching mechanism (6) includes a top plate (601), a connecting column (606) is provided at the bottom of the top plate (601), one end of the top of the connecting column (606) is welded to the top plate (601), one end of the bottom of the connecting column (606) is welded to the top of the adjusting block (602), a sliding shell (604) is provided between the top plate (601) and the adjusting block (602), the top and bottom of the sliding shell (604) are in sliding contact with the top plate (601) and the adjusting block (602) respectively, the sliding shell (604) is provided with pins (607) of various diameters inside, the pins (607) are in sliding contact with the inside of the adjusting block (602), a limit block (608) is welded to the top of the pins (607), and a third spring (609) is fitted on the outside of the pins (607).

7. The performance testing device for current transformer production as described in claim 6, characterized in that: The top plate (601) has a slot at the top, and the slots at the top of the top plate (601) are distributed in an annular and equally spaced manner. The slots at the top of the top plate (601) slide in contact with the outer wall of the ejector pin (12). One bottom end of the ejector pin (12) is tightly fitted with the top of the limiting block (608). The top of the limiting block (608) is provided with a circular protrusion structure, and the circular protrusion structure at the top of the limiting block (608) is embedded in the slot at the top of the top plate (601).

8. The performance testing device for current transformer production as described in claim 6, characterized in that: Two adjusting blocks (602) are provided. The outer walls of the two adjusting blocks (602) are distributed with teeth, and the outer walls of the two adjusting blocks (602) mesh with each other through the teeth. The inner walls of the adjusting blocks (602) are distributed with teeth. The teeth on the inner walls of the adjusting blocks (602) are distributed in a ring with equal spacing. The teeth on the inner walls of the adjusting blocks (602) mesh with the bottom of the toothed ring (603). The bottom of the toothed ring (603) is distributed with teeth. A second spring (605) is provided above the toothed ring (603). The second spring (605) is fitted on the outside of the sliding shell (604). The top outer side of the sliding shell (604) is connected to the lifting frame (401) by bolts.

9. The performance testing device for current transformer production as described in claim 6, characterized in that: The outer wall of the sliding shell (604) is provided with a groove, and the groove on the outer wall of the sliding shell (604) is distributed in a ring with equal spacing. The outer wall of the sliding shell (604) slides in contact with the inner wall of the toothed ring (603). The inner wall of the toothed ring (603) is provided with a protruding structure, and the protruding structure on the inner wall of the toothed ring (603) is distributed in a ring with equal spacing.

Images