A voltage current transformer testing device and method

Abstract

The application discloses a voltage-current transformer testing device and method, and belongs to the technical field of testing devices.The device body, a detection mechanism and a discharging mechanism are provided, a first motor is installed on one end side of the device body, a transmission shaft is externally sleeved with the output end of the first motor, the transmission shaft is in transmission connection with a first conveying belt, the first conveying belt is located inside a groove at one end of the device body, and first sensors are arranged on the both sides of the top of the first conveying belt.The application has the beneficial effects that the first spring is elastically pushed by a needle pin to be inserted into the voltage-current transformer for testing, the insertion depth can be self-adaptively adjusted, when the depth is relatively shallow, the needle pin can compress the first spring, damage and bending of the needle pin caused by excessive pressure can be avoided, the testing device is protected, the service life is prolonged, the insertion depth of the needle pin does not need to be repeatedly adjusted according to different voltage-current transformers, and the convenience of use is greatly improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of testing devices, in particular to a voltage and current transformer testing device and method. BACKGROUND

[0002] The voltage transformer is used for converting high voltage into low voltage in the power system to provide signals for measuring instruments and relay protection devices, and the current transformer is used for converting large current into small current to provide signals for electric energy metering and protection devices.

[0003] According to the search, the patent with the Chinese patent publication number CN117110970B discloses a voltage and current transformer testing device and method, the device does not need manual plugging of the power supply, thereby avoiding electric shock of the staff, and the voltage and current transformer is tested in the rotating process of the multiple groups of electric contacts and the test needle, thereby the large number of voltage and current transformers are tested staggeredly, the testing efficiency is improved, the labor cost is reduced, but the device needs to adjust the insertion depth of the test needle according to different voltage and current transformers when being used, thereby causing the adjustment to be troublesome; in addition, when the test needle is pressed too large, the test needle is bent and deformed, thereby damaging the test needle, and the service life of the device is reduced.

[0004] Therefore, the application provides an improved voltage and current transformer testing device, which aims to solve the problems of complex adjustment and easy damage of the test needle in the prior art. SUMMARY

[0005] One of the purposes of the application is to provide a voltage and current transformer testing device and method to solve the problems of complex adjustment and easy damage of the test needle in the prior art.

[0006] To achieve the above object, the technical scheme adopted by the present application is: a voltage and current transformer testing device and method, comprising: a device main body, a detection mechanism and a discharging mechanism, a first motor is installed on one side of the device main body, a transmission shaft is externally sleeved on the output end of the first motor, the transmission shaft is in transmission connection with a first conveying belt, the first conveying belt is located inside a groove at one end of the device main body, first sensors are arranged on both sides of the top of the first conveying belt, the first sensors are used for detecting the position of a workpiece, a discharging mechanism is arranged at one end of the first conveying belt, the discharging mechanism is used for guiding the workpiece, a third motor is arranged at the bottom of the discharging mechanism, the third motor is embedded in the bottom of the device main body, the third motor is used for steering work of the discharging mechanism, a second conveying belt is arranged on one side of the discharging mechanism, and a third conveying belt is arranged on the other side of the discharging mechanism, the second conveying belt and the third conveying belt are respectively in transmission connection with a second motor, two second motors are arranged, a controller is installed on one side of the device main body, the controller is used for overall control of the equipment, a lifting mechanism is arranged at the other end of the device main body, a lifting cylinder is installed at one end of the top of the lifting mechanism, two lifting cylinders are arranged, detection mechanisms are arranged at one end of the bottom of the two lifting cylinders, and the detection mechanisms are located above the discharging mechanism.

[0007] Preferably, the detection mechanism comprises an elastic mechanism and a probe mechanism, the elastic mechanism is located at one end of the bottom of the lifting cylinder, the elastic mechanism is used for self-adaptive adjustment of the insertion depth of the probe mechanism, the probe mechanism is installed at the bottom of the elastic mechanism, the probe mechanism is used for detecting current, and the probe mechanism is in electrical connection with the controller. The elastic mechanism is located at the bottom of the lifting cylinder, can self-adaptively adjust the insertion depth of the probe according to the hole groove depth of the voltage and current transformer, avoids the problems of over-deep or over-shallow insertion of the probe caused by different hole groove depths, does not need manual repeated adjustment of the insertion depth of the probe, greatly improves the universality and convenience of the testing device, the existence of the elastic mechanism can effectively buffer the contact force between the probe and the voltage and current transformer, when the probe is inserted into the hole groove, the elastic mechanism can absorb part of the pressure, prevents the probe from being bent or damaged due to excessive force, not only protects the probe, but also prolongs the service life of the testing device and reduces the maintenance cost of the equipment.

[0008] Preferably, the elastic mechanism comprises a connecting block, telescopic columns are arranged at both ends of the connecting block, one end of the bottom of the telescopic column is welded with the connecting block, one end of the top of the telescopic column is welded with the connecting block, a first threaded rod is welded at the middle of the top of the connecting block, the first threaded rod is in sliding contact with the inner hole of the connecting block, a first limiting block is welded at one end of the top of the first threaded rod, the first threaded rod is in threaded connection with a first adjusting block, a first spring is arranged at the top of the first adjusting block, the first spring is sleeved on the outer side of the first threaded rod, the telescopic column allows the elastic mechanism to perform telescopic movement in the vertical direction, so that the depth of the probe is self-adaptively adjusted; the position of the probe can be automatically adjusted according to the depth of the hole of the voltage and current transformer, so that the probe can be accurately inserted into the hole, and the spring provides elastic support for the telescopic movement; when the probe contacts the voltage and current transformer, the spring can buffer the pressure, so that the probe is not damaged due to excessive force; meanwhile, the elastic restoring force of the spring can ensure that the probe can maintain stable contact force in the hole with different depths.

[0009] Preferably, the probe mechanism comprises a mounting block, the mounting block is embedded in the bottom of the mounting seat, a close screw is arranged at the side surface of both ends of the mounting seat, the close screw is in threaded connection with the inner side of both ends of the mounting seat, two pins are mounted at the bottom of the mounting block, a second spring is sleeved on the outer side of the pin, one end of the top of the second spring is welded with the bottom of the mounting block, a dustproof sleeve is arranged on the outer side of the second spring, one end of the bottom of the dustproof sleeve is glued with the mounting block, a sliding block is glued at one end of the bottom of the dustproof sleeve, the sliding block is made of flexible rubber material, a hole is arranged in the inner side of the sliding block, the inner wall of the hole of the sliding block is in sliding contact with the outer wall surface of the pin, sponge is bonded on the top surface of the sliding block, in the process of moving the pin up and down, the sliding block and the sponge can clean the surface of the pin, remove the impurities, dust or stains that may be attached; the double cleaning mechanism can effectively avoid the increase of contact resistance caused by the pollution of the surface of the pin, ensure the stability and reliability of the detection signal, the dustproof sleeve is sleeved on the outer side of the second spring, the bottom is glued with the mounting block, can effectively isolate the external dust and impurities, prevent them from adhering to the surface of the pin and the spring, not only protect the pin from pollution, but also avoid the corrosion or short circuit of the pin caused by dust accumulation, thereby prolonging the service life of the pin.

[0010] Preferably, the discharge mechanism includes a rotating seat located inside a groove on one end surface of the main body of the device. The rotating seat is fitted onto the outside of the output end of a third motor. A fourth motor is installed inside both ends of the rotating seat. A transmission wheel is mounted on the output end of the fourth motor. The transmission wheels are distributed in a straight line at equal intervals inside both ends of the rotating seat, and adjacent transmission wheels are connected to each other by a transmission belt. The transmission wheels are fitted onto the outside of both ends of rollers. The rollers are distributed in a straight line at equal intervals and are located inside the groove in the middle of the rotating seat. The rotating seat is installed at the output end of the third motor. The rotation of the motor enables precise rotation of the rotating seat, allowing the discharge mechanism to automatically switch workstations according to the detection results, conveying qualified and unqualified voltage and current transformers to different conveyor belts, thereby achieving automatic sorting.

[0011] Preferably, a second sensor is installed at the top of both ends of the rotating base. The second sensor is electrically connected to the controller. A micro-motion cylinder is provided on both sides of the second sensor. The micro-motion cylinder is installed on the top of the rotating base by screws. A clamping block is fitted on the outside of the telescopic end of the micro-motion cylinder. The surface of the clamping block is coated with rubber. The second sensor is installed at the top of both ends of the rotating base and can detect the position information of the voltage and current transformers in real time and feed the signal back to the controller. Through the accurate detection of the sensor, the controller can control subsequent actions (such as clamping, rotation, etc.) according to the position of the transformer, ensuring that each transformer can be processed in the correct position, improving the accuracy and reliability of detection and sorting. The micro-motion cylinder is fixed to the top of the rotating base by screws. Its telescopic end can accurately control the movement of the clamping block. The design of the micro-motion cylinder allows for precise telescopic movements within a small stroke and can quickly respond to the controller's instructions, ensuring the timeliness and accuracy of the clamping action.

[0012] Preferably, the lifting mechanism includes a column, one bottom end of which is welded to the main body of the device. A second threaded rod is provided on one side of the column, the bottom end of which is rotatably connected to the main body of the device, and the top end of which is rotatably connected to the top end of the column. A knob is welded to the top of the second threaded rod. The outside of the second threaded rod is threadedly connected to one side of the lifting block. A lifting cylinder is embedded inside one side of the lifting block. The second threaded rod and the lifting block are connected by a thread. Rotation of the knob can drive the second threaded rod to rotate, thereby realizing the up and down movement of the lifting block. This threaded transmission method can provide precise height adjustment, ensuring that the lifting cylinder can be adjusted to a suitable position according to different specifications of voltage and current transformers. The threaded connection has self-locking properties, which can ensure that the lifting block remains stable after being adjusted to a specific height and will not change position due to vibration or other external forces.

[0013] Preferably, the lifting block has circular slots at both ends, which slide in contact with the outer wall of the slide rod. Two slide rods are provided, arranged parallel to the second threaded rod. One bottom end of each slide rod is welded to the main body of the device, and the top end is welded to both ends of the top of the column. The circular slots at both ends of the lifting block slide in contact with the outer wall of the slide rod. This design ensures that the lifting block always moves along the axis of the slide rod during its up-and-down movement, thus preventing tilting or deviation during movement. The linear guiding function of the slide rod ensures highly accurate movement of the lifting block, which is crucial for the accurate positioning of the detection mechanism (such as a probe), ensuring alignment between the probe and the slots of the voltage and current transformer, and improving the reliability of the detection.

[0014] Preferably, the surface of the first conveyor belt has strip-shaped protrusions distributed in a straight line at equal intervals, and the first conveyor belt is aligned with the grooves on the surface of the rotating seat. The rotating seat aligns with the grooves on its surface with the second and third conveyor belts respectively by rotation. Grooves are provided on both sides of the end of the device body, and the grooves on both sides of the end of the device body are aligned with the second and third conveyor belts. The rotating seat can align its surface grooves with the second and third conveyor belts respectively by rotation. This design ensures a smooth transition of the current transformer between different conveyor belts, maintaining good alignment whether it is conveying before detection or sorting after detection. This alignment mechanism allows the current transformer to accurately enter the next workstation, improving the reliability and efficiency of the entire conveying system.

[0015] The preferred method is as follows:

[0016] S01: By sequentially conveying the voltage and current transformers to be tested to the surface of the first conveyor belt, the first motor drives the drive shaft to rotate, thereby causing the drive shaft to sequentially convey the voltage and current transformers on the surface of the first conveyor belt to the discharge mechanism.

[0017] S02: When the voltage and current transformer is delivered to the roller surface, and the voltage and current transformer moves to the designated position, it is detected by the second sensor. Then the second sensor feeds the signal back to the controller, which controls the extension end of the micro-motion cylinder to extend. When the extension end of the micro-motion cylinder extends, it can drive the clamping block to clamp and position the voltage and current transformer.

[0018] S03: By rotating the knob, the knob can drive the second threaded rod to rotate. While the threaded rod rotates, it can drive the lifting block to adjust its height. Then, the height of the lifting cylinder is adjusted according to the product being tested. The bottom telescopic end of the lifting cylinder extends downward, allowing the lifting cylinder to push the first spring downward. The first spring can then elastically push the needle downward, allowing the needle to align with the slot on the surface of the voltage and current transformer. As the needle is pressed down, it can be inserted into the voltage and current transformer for testing.

[0019] S04: After the pin is detected, the extension end of the lifting cylinder drives the retraction. As the pin moves upward, the second spring pushes the slider to slide outside the pin, thus cleaning the outer wall of the pin. At the same time, the sponge slides up and down outside the pin, allowing the sponge to further clean the outer wall of the pin. This prevents the outer surface of the pin from being corroded by water vapor, which would affect the detection. Furthermore, the dust cover isolates external dust from the pin surface, thus achieving a dustproof effect.

[0020] S05: Based on the test results, the controller controls the third motor to rotate. While the third motor is rotating, it can drive the rotating seat to rotate 90 degrees. Then, the micro-motion cylinder drives the clamping block to retract, causing the clamping block to disengage from the voltage and current transformers. The fourth motor drives the transmission wheel to rotate, and the transmission wheel drives each roller to rotate through the transmission belt. This allows the qualified voltage and current transformers to be transported to the second conveyor belt, while the unqualified voltage and current transformers can be transported to the third conveyor belt, thus achieving an automatic sorting effect and greatly improving convenience.

[0021] Compared with the prior art, the beneficial effects of this application are as follows:

[0022] (1) The lifting cylinder extends downward through the bottom telescopic end, allowing the lifting cylinder to push the first spring downward, which in turn pushes the pin downward elastically, aligning the pin with the slot on the surface of the voltage and current transformer. As the pin is pressed down, it can be inserted into the voltage and current transformer for testing. The insertion depth can be adaptively adjusted by the first spring pushing the pin into the voltage and current transformer for testing. When the depth is shallow, the pin will compress the first spring, thus preventing the pin from being damaged or bent due to excessive pressure, thereby protecting the testing device and extending its service life. Furthermore, it eliminates the need to repeatedly adjust the pin insertion depth according to different voltage and current transformers, greatly improving the ease of use.

[0023] (2) Based on the test results, the controller sends a control signal to the third motor according to the preset logic, driving the third motor to rotate 90° in the specified direction; the rotation of the third motor drives the rotating seat to rotate synchronously through mechanical transmission, realizing the switching of work positions. At the same time, the controller sends a command to the micro-motion cylinder to retract its telescopic end, thereby driving the clamping block to disengage from the clamping state of the voltage and current transformer; subsequently, the controller starts the fourth motor, the output end of the fourth motor drives the transmission wheel to rotate, and the transmission wheel transmits power to each roller through the transmission belt, driving the roller to rotate in the preset direction; through the above coordinated actions, the qualified voltage and current transformers are transported to the second conveyor belt, while the unqualified voltage and current transformers are transported to the third conveyor belt, thereby realizing the automated sorting function of voltage and current transformers, significantly improving the efficiency and accuracy of the testing process.

[0024] (3) After the test is completed, the telescopic end of the lifting cylinder retracts upward, causing the pin to move upward. During this process, the elastic force applied by the second spring pushes the slider to slide downward along the outer wall of the pin. The inner wall of the slider fits tightly against the outer wall of the pin, effectively removing impurities and residues from the surface of the pin. At the same time, the sponge attached to the top of the slider slides up and down the outer wall of the pin, further cleaning the surface of the pin and removing any small particles or stains that may be attached. This dual cleaning mechanism can effectively prevent corrosion of the outer wall of the pin due to the accumulation of moisture or impurities, ensuring the electrical performance and contact reliability of the pin in subsequent tests. In addition, the dust cover design can effectively isolate external dust from contact with the surface of the pin, preventing dust from adhering and causing contamination or damage to the pin. This provides good dust protection for the pin in non-testing states, extends the service life of the pin, and improves the overall reliability of the testing device. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 This is a top view of the structure of the present invention.

[0027] Figure 3 This is a front view structural diagram of the present invention.

[0028] Figure 4 This is a side view of the structure of the present invention.

[0029] Figure 5 This is a schematic diagram of the third motor structure of the present invention.

[0030] Figure 6 This is a schematic diagram of the detection mechanism of the present invention.

[0031] Figure 7 This is a schematic diagram of the material discharge mechanism of the present invention.

[0032] Figure 8 This is a schematic diagram of the transmission belt structure of the present invention.

[0033] Figure 9 This is a schematic diagram of the lifting cylinder structure of the present invention.

[0034] Figure 10 For the present invention Figure 9 Enlarged structural diagram at point A in the middle.

[0035] In the diagram: 1. Main body of the device; 2. First motor; 3. Drive shaft; 4. First sensor; 5. First conveyor belt; 6. Second conveyor belt; 7. Detection mechanism; 701. Connecting block; 702. Telescopic column; 703. First threaded rod; 704. First limit block; 705. First adjusting block; 706. First spring; 707. Mounting base; 708. Set screw; 709. Pin; 710. Dust cover; 711. Slider; 712. Sponge; 713. Second spring; 71 4. Mounting block; 8. Discharge mechanism; 801. Rotary seat; 802. Second sensor; 803. Micro-motion cylinder; 804. Clamping block; 805. Roller; 806. Transmission wheel; 807. Transmission belt; 808. Fourth motor; 9. Lifting mechanism; 901. Column; 902. Slide bar; 903. Knob; 904. Second threaded rod; 905. Lifting block; 10. Third conveyor belt; 11. Controller; 12. Lifting cylinder; 13. Second motor; 14. Third motor. Detailed Implementation

[0036] 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.

[0037] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. They should not be construed as limiting the specific protection scope of this application.

[0038] 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.

[0039] Example 1:

[0040] One preferred embodiment of this application, such as Figures 1 to 10As shown, a voltage and current transformer testing device and method includes: a device body 1 and a detection mechanism 7. A first motor 2 is mounted on one side of the device body 1. A drive shaft 3 is externally fitted onto the output end of the first motor 2. The drive shaft 3 is connected to a first conveyor belt 5. The first conveyor belt 5 is located inside a groove at one end of the device body 1. First sensors 4 are arranged on both sides of the top of the first conveyor belt 5 for detecting the position of the workpiece. A discharge mechanism 8 is arranged at one end of the first conveyor belt 5 for guiding the workpiece. A third motor 14 is arranged at the bottom of the discharge mechanism 8 and is embedded in the bottom of the device body 1. The third motor 14 is used for turning the discharge mechanism 8. A second conveyor belt 6 is arranged on one side of the discharge mechanism 8. On the other side, a third conveyor belt 10 is provided. The second conveyor belt 6 and the third conveyor belt 10 are respectively connected to the second motor 13. There are two second motors 13. A controller 11 is installed on one side of the main body 1. The controller 11 is used for overall control of the equipment. A lifting mechanism 9 is provided at the other end of the main body 1. A lifting cylinder 12 is installed at the top end of the lifting mechanism 9. There are two lifting cylinders 12. A detection mechanism 7 is provided at the bottom end of the two lifting cylinders 12. The detection mechanism 7 is located above the discharge mechanism 8. The detection mechanism 7 includes an elastic mechanism and a probe mechanism. The elastic mechanism is located at the bottom end of the lifting cylinder 12. The elastic mechanism is used to adaptively adjust the insertion depth of the probe mechanism. The probe mechanism is installed at the bottom of the elastic mechanism. The probe mechanism is used for detection. The current probe mechanism is electrically connected to the controller 11; the elastic mechanism includes a connecting block 701, with telescopic columns 702 at both ends of the connecting block 701. One bottom end of the telescopic column 702 is welded to the connecting block 701, and one top end of the telescopic column 702 is welded to the connecting block 701. A first threaded rod 703 is welded to the middle of the top of the connecting block 701. The outside of the first threaded rod 703 slides in contact with the internal groove of the connecting block 701. A first limiting block 704 is welded to one top end of the first threaded rod 703. The outside of the first threaded rod 703 is threadedly connected to a first adjusting block 705. A first spring 706 is provided on the top of the first adjusting block 705. The first spring 706 is fitted onto the outside of the first threaded rod 703 and extends downwards through the telescopic end of the bottom of the lifting cylinder 12, allowing... The lifting cylinder 12 can push the first spring 706 downwards, so that the first spring 706 can elastically push the pin 709 downwards, so that the pin 709 can align with the slot on the surface of the voltage and current transformer. As the pin 709 is pressed down, it can be inserted into the voltage and current transformer for testing. The insertion depth can be adaptively adjusted by the elastic push of the first spring 706 into the voltage and current transformer. When the depth is shallow, the pin 709 will compress the first spring 706, thereby avoiding damage and bending of the pin 709 due to excessive pressure, thus protecting the testing device and extending its service life. Moreover, it eliminates the need to repeatedly adjust the insertion depth of the pin 709 according to different voltage and current transformers, greatly improving the convenience of use.

[0041] Example 2:

[0042] One preferred embodiment of this application, such as Figures 1 to 8As shown, a voltage and current transformer testing device and method are disclosed. The probe mechanism includes a mounting block 714, which is embedded in the bottom of a mounting base 707. Set screws 708 are provided on the sides of both ends of the mounting base 707, and the set screws 708 are threadedly connected to the internal ends of the mounting base 707. Two pins 709 are mounted on the bottom of the mounting block 714. A second spring 713 is fitted around the pins 709. One top end of the second spring 713 is welded to the bottom of the mounting block 714. A dust cover 710 is provided around the second spring 713. One bottom end of the dust cover 710 is glued to the mounting block 714, and a slider 711, which is flexible, is glued to the bottom end of the dust cover 710. The slider 711 is made of rubber and has internal slots. The inner wall of the slots in the slider 711 slides in contact with the outer surface of the pin 709. A sponge 712 is bonded to the top surface of the slider 711. The discharge mechanism 8 includes a rotating seat 801, which is located inside a groove on one end of the device body 1. The rotating seat 801 is fitted onto the outside of the output end of the third motor 14. A fourth motor 808 is installed inside both ends of the rotating seat 801. A transmission wheel 806 is fitted onto the output of the fourth motor 808. The transmission wheels 806 are distributed in a straight line at equal intervals inside both ends of the rotating seat 801, and adjacent transmission wheels 806 are connected to each other by a transmission belt 807. The transmission wheels 806 are fitted onto a roller 80. 5. At both ends of the outer surface, rollers 805 are distributed in a straight line at equal intervals, and the rollers 805 are distributed inside the groove in the middle of the rotating seat 801; second sensors 802 are installed on the top of both ends of the rotating seat 801, and the second sensors 802 are electrically connected to the controller 11. Micro-actuators 803 are provided on both sides of the second sensors 802. The micro-actuators 803 are installed on the top of the rotating seat 801 by screws. Clamping blocks 804 are fitted on the outside of the extension end of the micro-actuators 803, and the surface of the clamping blocks 804 is provided with a rubber coating; the lifting mechanism 9 includes a column 901, one end of which is welded to the device body 1. A second threaded rod 904 is provided on one side of the column 901. One end of the bottom of 904 is rotatably connected to the main body 1 of the device. One end of the top of the second threaded rod 904 is rotatably connected to one end of the top of the column 901. A knob 903 is welded to the top of the second threaded rod 904. The outside of the second threaded rod 904 is threadedly connected to one side of the lifting block 905. A lifting cylinder 12 is embedded inside one side of the lifting block 905. Circular slots are opened at both ends of the lifting block 905. The circular slots at both ends of the lifting block 905 slide in contact with the outer wall of the slide rod 902. There are two slide rods 902. The two slide rods 902 are arranged parallel to the second threaded rod 904. One end of the bottom of the slide rod 902 is welded to the main body 1 of the device. One end of the top of the slide rod 902 is welded to both ends of the top of the column 901.The surface of the first conveyor belt 5 has strip-shaped protrusions distributed in a straight line at equal intervals. The first conveyor belt 5 is aligned with the grooves on the surface of the rotating seat 801. The rotating seat 801 aligns with the grooves on its rotating mating surface with the second conveyor belt 6 and the third conveyor belt 10 respectively. Grooves are opened on both sides of the end of the device body 1, and the grooves on both sides of the end of the device body 1 are aligned with the second conveyor belt 6 and the third conveyor belt 10. According to the detection results, the controller 11 sends a control signal to the third motor 14 according to the preset logic, driving the third motor 14 to rotate 90° in the specified direction. The rotation of the third motor 14 drives the rotating seat 801 to rotate synchronously through the mechanical transmission belt 807, realizing the switching of work positions. At the same time, the controller 1 1. A command is sent to the micro-motion cylinder 803, causing its telescopic end to retract, thereby causing the clamping block 804 to disengage from the voltage and current transformer. Subsequently, the controller 11 starts the fourth motor 808. The output end of the fourth motor 808 drives the transmission wheel 806 to rotate. The transmission wheel 806 transmits power to each roller 805 through the transmission belt 807, driving the rollers 805 to rotate in a preset direction. Through the above coordinated actions, qualified voltage and current transformers are transported to the second conveyor belt 6, while unqualified voltage and current transformers are transported to the third conveyor belt 10, thereby realizing the automated sorting function of voltage and current transformers and significantly improving the efficiency and accuracy of the testing process.

[0043] Example 3:

[0044] One preferred embodiment of this application, such as Figures 1 to 6 As shown, a voltage and current transformer testing device and method are disclosed. The voltage and current transformer testing method is as follows:

[0045] S01: By sequentially conveying the voltage and current transformers to be tested to the surface of the first conveyor belt 5, the first motor 2 drives the transmission shaft 3 to rotate, thereby causing the transmission shaft 3 to sequentially convey the voltage and current transformers on the surface of the first conveyor belt 5 to the discharge mechanism 8.

[0046] S02: When the voltage and current transformer is delivered to the surface of the roller 805, and the voltage and current transformer moves to the designated position, it is detected by the second sensor 802. Then the second sensor 802 feeds the signal back to the controller 11, which then controls the extension end of the micro-motion cylinder 803 to extend. When the extension end of the micro-motion cylinder 803 extends, it can drive the clamping block 804 to clamp and position the voltage and current transformer.

[0047] S03: By rotating the knob 903, the knob 903 can drive the second threaded rod 904 to rotate. While the threaded rod rotates, it can drive the lifting block 905 to adjust its height. Then, the height of the lifting cylinder 12 is adjusted according to the product being tested. The bottom telescopic end of the lifting cylinder 12 extends downward, so that the lifting cylinder 12 can push the first spring 706 downward. The first spring 706 can elastically push the pin 709 downward, so that the pin 709 can align with the hole groove on the surface of the voltage and current transformer. As the pin 709 is pressed down, it can be inserted into the voltage and current transformer for testing.

[0048] S04: After the pin 709 is detected, the extension end of the lifting cylinder 12 is driven to retract. As the pin 709 moves upward, the second spring 713 pushes the slider 711 to slide outside the pin 709, thereby cleaning the outer wall of the pin 709. At the same time, the sponge 712 slides up and down outside the pin 709, allowing the sponge 712 to further clean the outer wall of the pin 709. This prevents the outer surface of the pin 709 from being corroded by water vapor, which would affect the detection. Furthermore, the dust cover isolates external dust from the surface of the pin 709, thus achieving a dustproof effect.

[0049] S05: Based on the test results, the controller 11 controls the third motor 14 to rotate. While the third motor 14 is rotating, it can drive the rotating seat 801 to rotate 90 degrees. Then, the micro-motion cylinder 803 drives the clamping block 804 to retract, so that the clamping block 804 is released from the clamping of the voltage and current transformer. The fourth motor 808 drives the transmission wheel 806 to rotate. The transmission wheel 806 drives each roller 805 to rotate through the transmission belt 807. The qualified voltage and current transformers can be transported to the second conveyor belt 6, and the unqualified voltage and current transformers can be transported to the third conveyor belt 10, thus achieving the effect of automatic sorting and greatly improving convenience.

[0050] After the test is completed, the telescopic end of the lifting cylinder 12 retracts upward, causing the pin 709 to move upward. During this process, the elastic force applied by the second spring 713 pushes the slider 711 to slide downward along the outer wall of the pin 709. The inner wall of the slider 711 fits tightly against the outer wall of the pin 709, effectively removing impurities and residues from the surface of the pin 709. At the same time, the sponge 712 attached to the top of the slider 711 slides up and down along the outer wall of the pin 709, further cleaning the surface of the pin 709 and removing any small particles or stains that may be attached. This dual cleaning mechanism effectively prevents corrosion of the outer wall of the pin 709 due to the accumulation of moisture or impurities, ensuring the electrical performance and contact reliability of the pin 709 in subsequent tests. In addition, the dust cover 710 is designed to effectively isolate external dust from contact with the surface of the pin 709, preventing dust from adhering and causing contamination or damage to the pin 709. This provides good dust protection for the pin 709 when not in use, extending the service life of the pin 709 and improving the overall reliability of the testing device.

[0051] 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 voltage and current transformer testing device, characterized in that, include: The device consists of a main body (1), a detection mechanism (7), and a discharge mechanism (8). A first motor (2) is mounted on one side of the main body (1). A drive shaft (3) is fitted around the output end of the first motor (2). The drive shaft (3) is connected to a first conveyor belt (5). The first conveyor belt (5) is located inside a groove at one end of the main body (1). First sensors (4) are installed on both sides of the top of the first conveyor belt (5). The first sensors (4) are used to detect the position of the workpiece. A discharge mechanism (8) is installed at one end of the first conveyor belt (5). The discharge mechanism (8) is used to guide the workpiece. A third motor (14) is installed at the bottom of the discharge mechanism (8). The third motor (14) is embedded in the bottom of the main body (1) of the device. The third motor (14) is used for the turning operation of the discharge mechanism (8). A second conveyor belt (6) is provided on one side of the discharge mechanism (8), and a third conveyor belt (10) is provided on the other side of the discharge mechanism (8). The second conveyor belt (6) and the third conveyor belt (10) are respectively connected to the second motor (13) for transmission. There are two second motors (13). A controller (11) is installed on one side of the main body (1). The controller (11) is used for the overall control of the equipment. A lifting mechanism (9) is provided at the other end of the main body (1). The top end of the lifting mechanism (9) is equipped with a... The device is equipped with two lifting cylinders (12). A detection mechanism (7) is located at one end of the bottom of each lifting cylinder (12), above the discharge mechanism (8). The detection mechanism (7) includes an elastic mechanism and a probe mechanism. The elastic mechanism is located at one end of the bottom of the lifting cylinder (12) and is used to adaptively adjust the insertion depth of the probe mechanism. The probe mechanism is installed at the bottom of the elastic mechanism and is used to detect current. The probe mechanism is electrically connected to the controller (11). The elastic mechanism includes a connecting block (701), with telescopic columns (702) at both ends of the connecting block (701). The bottom end of the telescopic column (702) is welded to the connecting block (701), and the top end of the telescopic column (702) is welded to the connecting block (701). A first threaded rod (703) is welded to the middle of the top of the connecting block (701). The outside of the first threaded rod (703) is in sliding contact with the internal hole groove of the connecting block (701). A first limiting block (704) is welded to the top end of the first threaded rod (703). The outside of the first threaded rod (703) is threadedly connected to the first adjusting block (705). A first spring (706) is provided on the top of the first adjusting block (705). The first spring (706) is fitted on the outside of the first threaded rod (703).

2. The voltage and current transformer testing device as described in claim 1, characterized in that: The probe mechanism includes a mounting block (714) which is embedded in the bottom of a mounting base (707). Set screws (708) are provided on both sides of the mounting base (707), and the set screws (708) are internally threaded to both ends of the mounting base (707). Two pins (709) are mounted on the bottom of the mounting block (714), and a second spring (713) is fitted around the pins (709). One top end of the second spring (713) is connected to the mounting block (714). The bottom is welded, and a dust cover (710) is provided on the outside of the second spring (713). One end of the bottom of the dust cover (710) is glued to the mounting block (714). A slider (711) is glued to one end of the bottom of the dust cover (710). The slider (711) is made of flexible rubber and has a hole groove inside. The inner wall of the hole groove inside the slider (711) slides in contact with the outer wall surface of the pin (709). A sponge (712) is glued to the top surface of the slider (711).

3. The voltage and current transformer testing device as described in claim 1, characterized in that: The discharge mechanism (8) includes a rotating seat (801), which is located inside a groove on one end surface of the main body (1) of the device. The rotating seat (801) is fitted outside the output end of the third motor (14). A fourth motor (808) is installed inside both ends of the rotating seat (801). A transmission wheel (806) is fitted at the output of the fourth motor (808). The transmission wheels (806) are distributed in a straight line at equal intervals inside both ends of the rotating seat (801), and adjacent transmission wheels (806) are connected to each other by a transmission belt (807). The transmission wheels (806) are fitted outside both ends of the rollers (805). The rollers (805) are distributed in a straight line at equal intervals, and the rollers (805) are distributed inside the groove in the middle of the rotating seat (801).

4. The voltage and current transformer testing device as described in claim 3, characterized in that: The rotating base (801) has a second sensor (802) installed on the top of both ends. The second sensor (802) is electrically connected to the controller (11). The second sensor (802) has a micro-actuator (803) on both sides. The micro-actuator (803) is installed on the top of the rotating base (801) by screws. The extension end of the micro-actuator (803) is fitted with a clamping block (804). The surface of the clamping block (804) is coated with a rubber coating.

5. The voltage and current transformer testing device as described in claim 1, characterized in that: The lifting mechanism (9) includes a column (901), one bottom end of which is welded to the main body (1) of the device. A second threaded rod (904) is provided on one side of the column (901). One bottom end of the second threaded rod (904) is rotatably connected to the main body (1) of the device. One top end of the second threaded rod (904) is rotatably connected to one top end of the column (901). A knob (903) is welded to the top of the second threaded rod (904). The outside of the second threaded rod (904) is threadedly connected to one side of the lifting block (905). A lifting cylinder (12) is embedded inside one side of the lifting block (905).

6. The voltage and current transformer testing device as described in claim 5, characterized in that: The lifting block (905) has circular slots at both ends. The circular slots at both ends of the lifting block (905) slide in contact with the outer wall of the slide rod (902). There are two slide rods (902). The two slide rods (902) are arranged parallel to the second threaded rod (904). The bottom end of the slide rod (902) is welded to the main body (1) of the device, and the top end of the slide rod (902) is welded to both ends of the top of the column (901).

7. The voltage and current transformer testing device as described in claim 1, characterized in that: The first conveyor belt (5) has strip-shaped protrusions distributed in a straight line at equal intervals on its surface. The first conveyor belt (5) is aligned with the groove on the surface of the rotating seat (801). The rotating seat (801) is aligned with the groove on its rotating mating surface to the second conveyor belt (6) and the third conveyor belt (10) respectively. The device body (1) has grooves on both sides at its end. The grooves on both sides at the end of the device body (1) are aligned with the second conveyor belt (6) and the third conveyor belt (10).

8. A voltage and current transformer testing method using the voltage and current transformer testing device as described in any one of claims 1-7, characterized in that: The method is as follows: S01: By sequentially conveying the voltage and current transformers to be tested to the surface of the first conveyor belt (5), the first motor (2) drives the transmission shaft (3) to rotate, thereby causing the transmission shaft (3) to sequentially convey the voltage and current transformers on the surface of the first conveyor belt (5) to the discharge mechanism (8). S02: When the voltage and current transformer is delivered to the surface of the roller (805), after the voltage and current transformer moves to the designated position, it is detected by the second sensor (802). Then the second sensor (802) feeds the signal back to the controller (11), which then controls the extension end of the micro-motion cylinder (803) to extend. When the extension end of the micro-motion cylinder (803) extends, it can drive the clamping block (804) to clamp and position the voltage and current transformer. S03: By rotating the knob (903), the knob (903) can drive the second threaded rod (904) to rotate. While the threaded rod rotates, it can drive the lifting block (905) to adjust its height. Then, the height of the lifting cylinder (12) is adjusted according to the product being tested. The bottom extension end of the lifting cylinder (12) extends downward, so that the lifting cylinder (12) can push the first spring (706) downward. The first spring (706) can elastically push the pin (709) downward, so that the pin (709) can align with the hole groove on the surface of the voltage and current transformer. As the pin (709) is pressed down, it can be inserted into the inside of the voltage and current transformer for testing. S04: After the pin (709) is detected, it is retracted by the extension end of the lifting cylinder (12). While the pin (709) moves upward, the second spring (713) pushes the slider (711) to slide outside the pin (709), so that the slider (711) can clean the outer wall of the pin (709). At the same time, the sponge (712) slides up and down outside the pin (709), so that the sponge (712) can further clean the outer wall of the pin (709), thereby avoiding water vapor corrosion on the outer surface of the pin (709) and affecting the detection. In addition, the dust cover can isolate the external dust from the surface of the pin (709), thereby achieving the dustproof effect. S05: According to the test results, the controller (11) controls the third motor (14) to rotate. While the third motor (14) rotates, it can drive the rotating seat (801) to rotate 90 degrees. Then the micro-motion cylinder (803) drives the clamping block (804) to retract, so that the clamping block (804) is released from the clamping of the voltage and current transformer. The fourth motor (808) drives the transmission wheel (806) to rotate. The transmission wheel (806) drives each roller (805) to rotate through the transmission belt (807). The qualified voltage and current transformers can be transported to the second conveyor belt (6), and the unqualified voltage and current transformers can be transported to the third conveyor belt (10), thus achieving the effect of automatic sorting and greatly improving convenience.

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