Coil withstand voltage detection method and detection device thereof

Abstract

The invention relates to the technical field of coil withstand voltage detection, and provides a coil withstand voltage detection method and a detection device thereof.The detection device comprises an annular conveying table, a detection table and a data processing table, the annular conveying table is provided with a plurality of clamping devices, the detection table is provided with a plurality of testing devices, and the clamping devices fix coils; the annular conveying table drives the clamping device to move to the testing device, the testing device carries out voltage withstanding detection on the coils, the data processing table judges detection data, unqualified coils are screened out, and the annular conveying table puts the unqualified coils into the corresponding recycling boxes. According to the technical scheme, the problems that in the prior art, a coil withstand voltage detection device depends on manual operation or semi-automatic operation, the coil needs to be manually placed and taken out, the coil needs to be manually fixed or detection is directly conducted through manual work, the inspection time is long, operation errors are prone to occurring, and then the production efficiency is affected are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of coil withstand voltage detection, and in particular to a coil withstand voltage detection method and a detection device thereof. Background Art

[0002] Coils are an indispensable key component in electrical equipment and are widely used in motors, transformers, inductors, relays and other equipment. Its basic function is to generate a magnetic field or induced current when current passes through the spiral structure wound by conductive wire, thereby realizing the conversion, transmission and storage of electrical energy. The performance and reliability of the coil directly affect the working efficiency and safety of the entire electrical equipment.

[0003] In the manufacturing process of industrial and consumer electronic products, the quality inspection of coils is particularly important. In particular, the withstand voltage test is mainly used to evaluate the insulation performance and durability of coils under high voltage conditions, to prevent short circuits, overheating and other faults caused by insulation failure, and to ensure the safe operation and long life of the equipment.

[0004] However, most of the existing coil withstand voltage testing devices rely on manual or semi-automatic operation, requiring manual placement and removal of coils, manual fixing of coils, or direct manual testing. Not only is it time-consuming, but manual testing is prone to errors or operational errors, which in turn affects production efficiency. Summary of the invention

[0005] The present invention proposes a coil withstand voltage detection method and a detection device thereof, which solves the problem that the coil withstand voltage detection device in the related art relies on manual operation or semi-automatic operation, requires manual placement and removal of coils, manual fixing of coils or direct manual detection, resulting in a long inspection time and prone to operational errors, thereby affecting production efficiency.

[0006] The technical solution of the present invention is as follows:

[0007] The coil withstand voltage detection device includes an annular conveyor platform, a detection platform, and a data processing platform. The detection platform is located on one side of the annular conveyor platform and is fixedly connected to the annular conveyor platform. Two recovery boxes are abutted on the side of the annular conveyor platform away from the detection platform. The annular conveyor platform is fixedly connected to an annular guide rail, and the annular guide rail is close to the edge of the annular conveyor platform. A plurality of clamping devices for fixing the coil are slidably connected to the guide rail. A lifting structure for flipping the clamping device is provided in the clamping device. The annular conveyor platform is slidably connected to an annular chain for driving the clamping device to move. The annular chain is located on the inner side of the annular guide rail. Both sides of the inner part of the annular conveyor platform are fixedly connected with a first drive motor for driving the annular chain to move. The first drive motor is connected to the chain transmission. A plurality of test devices for applying pulse high voltage to the coil and detecting the leakage current of the coil are provided on the detection platform. The test device and the clamping device are electrically connected to the data processing platform.

[0008] Furthermore, the clamping device includes a coil clamp, a support frame, and a movable base, the support frame is fixedly connected to the movable base, the coil clamp is located on the support frame and abuts against the support frame, one side of the coil clamp is rotatably connected to the support frame, the lifting structure is located in the support frame, and the side of the movable base facing away from the support frame is rotatably connected to a plurality of rotating wheels, each of the rotating wheels is arranged in a pair, the same pair of the rotating wheels are respectively close to the two sides of the movable base, the same pair of the rotating wheels are slidably connected to the two sides of the annular guide rail, the side of the movable base facing away from the rotatable connection between the coil clamp and the support frame is fixedly connected to a movable protrusion, the movable protrusion is fixedly connected to the annular chain, and the coil clamp is electrically connected to the data processing station.

[0009] Furthermore, the lifting structure includes a hydraulic rod and a fixing part, wherein the hydraulic rod is located in the support frame, the fixing part is located on the side of the mobile base facing the support frame and is fixedly connected to the mobile base, the end of the hydraulic rod away from its push rod is rotatably connected to the fixing part, the push rod of the hydraulic rod is rotatably connected to the side of the coil clamp facing the support frame, and the hydraulic rod is electrically connected to the data processing station.

[0010] Furthermore, the coil clamp includes a threaded rod, a second drive motor, and two C-shaped clamps. The threaded rod is located inside one side of the coil clamp and is rotatably connected to the coil clamp. The second drive motor is fixedly connected to the coil clamp. A linkage structure is provided between the second drive motor and the threaded rod for enabling the second drive motor to drive the threaded rod to rotate. A moving block is fixedly connected to one end of the two C-shaped clamps facing the threaded rod. The moving block is threadedly connected to the threaded rod. The side surface of the moving block abuts against the coil clamp. The two C-shaped clamps extend to the same outer side of the coil clamp. The second drive motor is electrically connected to the data processing station.

[0011] Furthermore, the testing device includes a fixed part and two connecting parts, the two connecting parts are embedded in the fixed part from the same side of the fixed part, and the two connecting parts are provided with connecting structures with the same structure for connecting to the two ends of the coil respectively. The two connecting parts are also respectively provided with a pressure structure for pushing the connecting structure to connect to one end of the coil and apply high voltage to the coil, and a receiving structure for pushing the connecting structure to connect to the other end of the coil and receiving the leakage current of the coil under high voltage. The pressure structure and the receiving structure are both electrically connected to the data processing station.

[0012] Furthermore, a V-shaped groove is provided in the connecting part, the V-shaped groove is connected to the side of the connecting part away from the fixed part, and both ends of the same side of the V-shaped groove extend toward the middle of the connecting part. The connecting structure includes a pair of clamps for clamping the ends of the coils, the two clamps are respectively located on both sides of the V-shaped groove, and the two clamps are arranged in mirror symmetry with the central axis of the connecting part. The clamps include a first clamping strip, a rotating part, and a second clamping strip. The rotating part is located in the middle of one side of the V-shaped groove, and the rotating part is rotatably connected to the connecting part. One end of the first clamping strip and one end of the second clamping strip are both fixedly connected to the rotating part. The first clamping strip extends along the V-shaped groove toward the side of the connecting part away from the fixed part and extends out of the connecting part. The second clamping strip extends along the V-shaped groove toward the middle of the connecting part. The thickness of the first clamping strip and the second clamping strip is less than the width of the V-shaped groove.

[0013] Furthermore, the connecting portion is provided with a Y-shaped groove, the Y-shaped groove is connected to a side of the connecting portion facing the fixing portion, both ends of the same side of the Y-shaped groove extend toward the middle of the connecting portion and are respectively connected to the two ends of the same side of the V-shaped groove, the pressure structure and the receiving structure are respectively located in the Y-shaped groove of the connecting portion where they are located, the pressure structure includes a high-voltage pulse generator and two connecting strips that are arranged in a mirror-symmetrical manner with respect to the central axis of the connecting portion, the receiving structure includes a DC leakage current detector and two connecting strips that are arranged in a mirror-symmetrical manner with respect to the central axis of the connecting portion, the connecting strip of the pressure structure has the same structure as the connecting strip of the receiving structure, and the connecting strips are respectively connected to the corresponding high-voltage pulse generator or DC leakage current detector. The detector is fixedly connected and electrically connected, the connecting strip extends along the Y-shaped groove where it is located to the V-shaped groove of the connecting part where it is located, the high-voltage pulse generator and the DC leakage current detector are fixedly connected to the side away from the connecting strip with the second electric push rod, the side of the second electric push rod away from the high-voltage pulse generator or the DC leakage current detector is embedded in the fixing part, the second electric push rod is fixedly connected to the fixing part, the high-voltage pulse generator, the DC leakage current detector, and the second electric push rod are all electrically connected to the data processing station, and the two ends of the same side of the V-shaped groove are fixedly connected with a reset spring, the reset spring extends to the Y-shaped groove, and the extended end of the reset spring abuts against the second clamping strip in the end of the V-shaped groove.

[0014] Furthermore, a first electric push rod is fixedly connected to a side of the fixing portion facing away from the connecting portion, the first electric push rod is embedded in the detection platform, and the first electric push rod is electrically connected to the data processing platform.

[0015] The specific steps of the coil withstand voltage detection method are as follows:

[0016] S1: The staff places the coils one by one on different clamping devices in front of the test device, and makes the two ends of the coils face downward and perpendicular to the test table. The data processing table controls the clamping devices to clamp and fix the coils;

[0017] S2: The data processing station controls the first driving motor to drive the ring chain according to the number of the test devices, and the ring chain drives the clamping devices with the same number as the test devices to move to the top of the corresponding test devices;

[0018] S3: The test device connects the two ends of the coil fixed by the clamping device directly above it, applies a pulse high voltage to one end of the coil, checks the leakage current at the other end of the coil, and transmits the detection data to the data processing station;

[0019] S4: The data processing station determines the pressure resistance of the coil according to the data sent back by the test device, transports the unqualified coil to the recycling box corresponding to the unqualified coil, controls the clamping device to release the unqualified coil, and controls the lifting structure to flip the clamping device to place the unqualified coil into the recycling box, and places the qualified coil into the recycling box corresponding to the qualified coil in the same way as the unqualified coil.

[0020] The working principle and beneficial effects of the present invention are:

[0021] The present invention realizes automatic movement and continuous transmission through the annular guide rail and annular chain on the annular conveyor platform; ensures that the coil is automatically fixed through the clamping device, and clamps the corresponding number of coils through multiple clamping devices at the same time; performs efficient and accurate detection through the testing device, and detects multiple coils at the same time through multiple testing devices, thereby improving the detection speed; the annular conveyor platform, the clamping device, and the testing device are precisely controlled by the data processing station to be linked, and the data processing station processes and stores the detection data, judges the data of the coils that have been detected, screens out unqualified coils, and puts qualified coils and unqualified coils into their corresponding recycling boxes through the lifting structure of the annular conveyor platform and the clamping device, thereby realizing automatic classification. The present invention effectively solves the problems of low efficiency and high error rate caused by relying on manual operation in the process of traditional coil withstand voltage detection, thereby significantly improving production efficiency and detection quality, and reducing labor demand and labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a top view of the present invention;

[0025] Figure 3 It is a front view of the present invention;

[0026] Figure 4 for Figure 3 A magnified image of point A;

[0027] Figure 5 It is a structural schematic diagram of the coil clamp in the present invention;

[0028] Figure 6 It is a top view of the coil fixture in the present invention;

[0029] Figure 7 for Figure 6 Sectional view at AA;

[0030] Figure 8 It is a structural schematic diagram of the testing device in the present invention;

[0031] Fig. 9 It is a top view of the testing device in the present invention;

[0032] Fig.10 for Fig. 9 Cross-sectional view at BB.

[0033] In the figure: 1, annular conveying platform; 2, testing platform; 3, data processing platform; 4, testing device; 5, clamping device; 6, recycling box; 11, first driving motor; 12, annular guide rail; 13, annular chain; 41, connecting part; 42, fixing part; 43, first electric push rod; 51, coil clamp; 52, supporting frame; 53, moving base; 54, hydraulic rod; 411, first clamping bar; 412, rotating part; 413, second clamping bar; 414, reset spring; 415, high-voltage pulse generator; 416, DC leakage current detector; 417, connecting bar; 418, V-shaped groove; 419, Y-shaped groove; 421, second electric push rod; 511, threaded rod; 512, C-shaped clamping part; 513, moving block; 514, second driving motor; 531, rotating wheel; 532, moving protrusion; 533, fixing part. DETAILED DESCRIPTION

[0034] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figure 1 to Figure 4 As shown, the present embodiment proposes a coil withstand voltage detection device, including an annular conveyor platform 1, a detection platform 2, and a data processing platform 3. The detection platform 2 is located on one side of the annular conveyor platform 1 and is fixedly connected to the annular conveyor platform 1. Two recovery boxes 6 are abutted on the side of the annular conveyor platform 1 away from the detection platform 2. The annular conveyor platform 1 is fixedly connected with an annular guide rail 12, and the annular guide rail 12 is close to the edge of the annular conveyor platform 1. A plurality of clamping devices 5 for fixing the coil are slidably connected to the guide rail. A lifting structure for flipping the clamping device 5 is arranged in the clamping device 5. The annular conveyor platform 1 is slidably connected with an annular chain 13 for driving the clamping device 5 to move. The annular chain 13 is located on the inner side of the annular guide rail 12. Both sides of the inner part of the annular conveyor platform 1 are fixedly connected with a first drive motor 11 for driving the annular chain 13 to move. The first drive motor 11 is connected to the chain transmission. A plurality of test devices 4 for applying pulse high voltage to the coil and detecting the leakage current of the coil are arranged on the test platform 2. The test device 4 and the clamping device 5 are electrically connected to the data processing platform 3.

[0036] The annular conveyor platform 1 is used to drive the clamping device 5 to move. The annular guide rail 12 is used to provide a moving track for the clamping device 5 so that the clamping device 5 can move within the moving track. The annular chain 13 is used to drive the clamping device 5 to move. The first drive motor 11 is used to drive the annular chain 13 to move, and then the annular chain 13 drives the clamping device 5 to move on the annular guide rail 12. Among the two recycling boxes 6, one is used to recycle coils that have passed the withstand voltage test, and the other is used to recycle coils that have failed the withstand voltage test; the recycling box 6 is arranged on the side of the annular conveyor platform 1 away from the testing platform 2. In order to ensure the continuity of the test and to ensure the test efficiency, after the coil test is completed, the data processing station 3 should first record the corresponding clamping devices 5 of the qualified coils and the unqualified coils, and when the clamping device 5 moves to the top of the corresponding recycling box 6, the corresponding coil is put in.

[0037] The clamping device 5 is used to fix the coil, and cooperate with the annular conveyor 1 to convey the coil to be tested to the top of the test device 4 for pressure resistance testing, or cooperate with the annular conveyor 1 and its lifting structure to put the tested coil into the corresponding recovery box 6. Several clamping devices 5 should be equidistantly arranged on the annular guide rail 12 and arranged in a ring shape along the annular guide rail 12.

[0038] The inspection table 2 is used to place the test device 4 so that the test device 4 can stably test the coil. The test device 4 is used to perform a withstand voltage test on the coil to be tested fixed on the clamping device 5, and transmit the test data to the data processing table 3. Several test devices 4 should be equidistantly arranged on the inspection table 2 and arranged linearly along the inspection table. The spacing between adjacent test devices 4 should be the same as the spacing between adjacent clamping devices 5 to ensure that different test devices 4 can accurately test the coils above them.

[0039] The data processing station 3 is used to control the annular conveyor 1, the clamping device 5, and the testing device 4, so that they form a linkage, and process the detection data to screen out unqualified coils; the data processing station 3 includes a PLC module, which controls the first drive motor 11 to rotate through the PLC module, so that the first drive motor 11 drives the chain to move, so that the chain drives the clamping device 5 to move, and controls the position of the clamping device 5. In addition, the PLC module can also control the opening and closing of the clamping device 5, so that the clamping device 5 fixes the coil; the testing device 4 is controlled to perform a withstand voltage test on the coil on the clamping device 5, and at the same time, the withstand voltage capacity of the corresponding coil is judged according to the data detected by the testing device 4, and unqualified coils are screened out, and the annular conveyor 1, the clamping device 5, and the lifting structure are controlled, when the unqualified coil moves to the top of the recovery box 6 corresponding to the unqualified coil, the unqualified coil is placed in the recovery box 6 corresponding to the unqualified coil, and when the qualified coil moves to the top of the recovery box 6 corresponding to the qualified coil, the qualified coil is placed in the recovery box 6 corresponding to the qualified coil. The PLC module of this embodiment adopts the Siemens S7-1200 model PLC controller, which has reliable performance, rich expansion modules, flexible programming, good scalability and communication capabilities, and can cooperate with display screens and other devices to form an independent operation and monitoring system, which can be applied to this embodiment.

[0040] like Figures 4 to 7As shown, in this embodiment, the clamping device 5 includes a coil clamp 51, a support frame 52, and a movable base 53. The support frame 52 is fixedly connected to the movable base 53. The coil clamp 51 is located on the support frame 52 and abuts against the support frame 52. One side of the coil clamp 51 is rotatably connected to the support frame 52. The lifting structure is located in the support frame 52. The side of the movable base 53 away from the support frame 52 is rotatably connected to a plurality of rotating wheels 531. Each rotating wheel 531 is arranged in pairs. The same pair of rotating wheels 531 is respectively close to the two sides of the movable base 53. The same pair of rotating wheels 531 is slidably connected to the two sides of the annular guide rail 12. The side of the movable base 53 away from the rotation connection between the coil clamp 51 and the support frame 52 is fixedly connected to a movable protrusion 532. The movable protrusion 532 is fixedly connected to the annular chain 13. The coil clamp 51 is electrically connected to the data processing station 3. The coil clamp 51 is used to fix the coil so that the coil can be stably connected to the clamping device 5 during the movement process, and ensure that the coil will not move or shake during the detection process. The support frame 52 is used to support the coil clamp 51, and cooperate with the lifting structure inside it to realize the flipping function of the coil clamp 51, thereby achieving the function of dropping the coil after the inspection. The mobile base 53 is used to be fixed with the support frame 52, and cooperate with the annular guide rail 12 and the annular chain 13 to realize the movement of the clamping device 5. The rotating wheel 531 is used to reduce the friction between the mobile base 53 and the annular guide rail 12 and improve the movement efficiency. The rotating wheel 531 is arranged in pairs, which can be effectively connected to the two sides of the annular guide rail 12, and ensure that the mobile base 53 runs smoothly during the movement, thereby ensuring the smooth operation of the clamping device 5. The moving protrusion 532 is used to connect with the annular chain 13, so that the annular chain 13 can drive the mobile base 53 to move, thereby realizing the driving of the clamping device 5 to move.

[0041] In this embodiment, the lifting structure includes a hydraulic rod 54 and a fixing member 533. The hydraulic rod 54 is located in the support frame 52. The fixing member 533 is located on the side of the mobile base 53 facing the support frame 52 and is fixedly connected to the mobile base 53. The end of the hydraulic rod 54 away from its push rod is rotatably connected to the fixing member 533. The push rod of the hydraulic rod 54 is rotatably connected to the side of the coil fixture 51 facing the support frame 52. The hydraulic rod 54 is electrically connected to the data processing station 3. The hydraulic rod 54 is used to lift the coil fixture 51, and cooperates with the rotation connection of one side of the coil fixture 51 with the support frame 52 to realize the flipping of the coil fixture 51, and then cooperates with the opening and closing of the coil fixture 51 to achieve the function of placing the coil. The fixing member 533 is used to fix the hydraulic rod 54, so that the hydraulic rod 54 can stably push the coil fixture 51 up and down. Two hydraulic rods 54 should be provided, and both hydraulic rods 54 are used to lift the coil clamp 51. The two hydraulic rods 54 working simultaneously can reduce the resistance of a single hydraulic rod 54 and improve the lifting efficiency. The two hydraulic rods 54 can better ensure that the coil clamp 51 maintains balance during the lifting process, avoiding the tilting of the coil clamp 51, resulting in uneven force on the connection between it and the support frame 52, and further wear and damage.

[0042] In this embodiment, the coil clamp 51 includes a threaded rod 511, a second drive motor 514, and two C-shaped clamps 512. The threaded rod 511 is located inside one side of the coil clamp 51 and is rotatably connected to the coil clamp 51. The second drive motor 514 is fixedly connected to the coil clamp 51. A linkage structure is provided between the second drive motor 514 and the threaded rod 511 for driving the second drive motor 514 to drive the threaded rod 511 to rotate. A moving block 513 is fixedly connected to one end of the two C-shaped clamps 512 facing the threaded rod 511. The moving block 513 is threadedly connected to the threaded rod 511. The side of the moving block 513 abuts against the coil clamp 51. The two C-shaped clamps 512 extend to the same outer side of the coil clamp 51. The second drive motor 514 is electrically connected to the data processing station 3. The threaded rod 511 is used to rotate the threaded rod 511 so that the moving block 513 connected to it is linearly moved along the threaded rod 511, realizing screw transmission, thereby controlling the opening and closing of the C-type clamp 512 connected to the moving block 513. The design of the threaded rod 511 makes the clamping process of the coil accurate and controllable, and realizes smooth linear movement through the mechanical transmission of the thread. The second drive motor 514 is used to provide power to drive the threaded rod 511 to rotate, thereby driving the moving block 513 to move. The motor drive mode automates the operation of the clamp, improves the work efficiency and the control accuracy of the clamping force. The linkage structure between the second drive motor 514 and the threaded rod 511 can be synchronous pulley or gear drive or chain drive. The synchronous pulley, gear drive, and chain drive all belong to the prior art, and their specific structures and connection methods are not repeated in this embodiment. The C-type clamp 512 is used to clamp and fix the coil so that the coil will not move, ensuring the stable detection; the C-type design provides a stable clamping force and can adapt to coils of different sizes. The moving block 513 is used to cooperate with the threaded rod 511, and the moving block 513 is in contact with the coil fixture 51 to ensure that the moving block 513 does not follow the threaded rod 511 when the threaded rod 511 rotates, resulting in failure to achieve linear movement. The moving block 513 is in contact with the coil fixture 51 so that both the upper and lower sides of the moving block 513 are in contact with the coil fixture 51.

[0043] like Figure 8 to Figure 10As shown, in this embodiment, the test device 4 includes a fixed portion 42 and two connecting portions 41, the two connecting portions 41 are embedded in the fixed portion 42 from the same side of the fixed portion 42, and the two connecting portions 41 are provided with connecting structures with the same structure for connecting to the two ends of the coil respectively, and the two connecting portions 41 are also provided with a pressure structure for pushing the connecting structure to connect to one end of the coil and applying high voltage to the coil, and a receiving structure for pushing the connecting structure to connect to the other end of the coil and receiving the leakage current of the coil under high voltage, and the pressure structure and the receiving structure are both electrically connected to the data processing station 3. The two connecting portions 41 are respectively used to connect to the two ends of the coil, and then connected to the coil to form a loop. The fixed portion 42 is used to fix the connecting portion 41 to ensure the stable operation of the connecting portion 41.

[0044] In this embodiment, a V-shaped groove 418 is arranged in the connecting portion 41, and the V-shaped groove 418 is connected to the side of the connecting portion 41 away from the fixing portion 42. Both ends of the same side of the V-shaped groove 418 extend toward the middle of the connecting portion 41. The connecting structure includes a pair of clamps for clamping the coil ends. The two clamps are respectively located on both sides of the V-shaped groove 418. The two clamps are arranged in a mirror-symmetrical manner with respect to the central axis of the connecting portion 41. The clamps include a first clamping strip 411, a rotating member 412, and a second clamping strip 413. The rotating member 412 is located at In the middle of one side of the V-groove 418, the rotating member 412 is rotatably connected to the connecting portion 41, one end of the first clamping strip 411 and one end of the second clamping strip 413 are fixedly connected to the rotating member 412, the first clamping strip 411 extends along the V-groove 418 to the side of the connecting portion 41 away from the fixed portion 42 and extends out of the connecting portion 41, the second clamping strip 413 extends along the V-groove 418 to the middle of the connecting portion 41, and the thickness of the first clamping strip 411 and the second clamping strip 413 is less than the width of the V-groove 418. The V-groove 418 is used to provide a fixed and positioned space for the fixture, so that the fixture can accurately clamp the coil; the V-groove 418 set in the guide is the V-groove 418 placed in reverse. The design of the V-groove 418 can ensure that the fixture has a stable support point when clamping the coil, avoid the coil from sliding and positional deviation, and improve the stability and accuracy of clamping. And the V-groove 418 can make the two fixtures separately set, thereby ensuring the opening and closing of the two fixtures. Both ends of the same side of the V-shaped groove 418 extend toward the middle of the connecting portion 41 to provide sufficient support length, so that the clamp can be evenly stressed when clamping the coil, and ensure the subsequent connection with the pressure structure or the receiving structure. The clamp is used to clamp the end of the coil to prevent the coil from sliding or falling off during the clamping process, and enable the pressure structure and the receiving structure to detect the coil through the clamp; the two clamps are arranged in a mirror-symmetrical manner to easily clamp the coil. The first clamping bar 411, the second clamping bar 413, and the rotating member 412 form a clamp, and the first clamping bar 411 is used to connect with the coil. The first clamping bars 411 of the two clamps are close to each other, thereby clamping one end of the coil to achieve a fixing effect; the second clamping bar 413 is used to connect with the pressure structure or the receiving structure to ensure the connection between the pressure structure and the receiving structure and the clamp; the rotating member 412 is used to realize the opening and closing of the clamp, thereby realizing the connection and separation of the coil end. The thickness of the first clamping strip 411 and the second clamping strip 413 is smaller than the width of the V-shaped groove 418 , so as to ensure that the clamping strips can move freely in the V-shaped groove 418 without being stuck.

[0045] In this embodiment, the connecting portion 41 is provided with a Y-shaped groove 419, and the Y-shaped groove 419 is connected to one side of the connecting portion 41 facing the fixing portion 42. Both ends of the same side of the Y-shaped groove 419 extend toward the middle of the connecting portion 41 and are respectively connected to the two ends of the same side of the V-shaped groove 418. The pressure structure and the receiving structure are respectively located in the Y-shaped groove 419 of the connecting portion 41 where they are located. The pressure structure includes a high-voltage pulse generator 415 and two connecting bars 417 that are arranged in a mirror-symmetrical manner with respect to the central axis of the connecting portion 41. The receiving structure includes a DC leakage current detector 416 and two connecting bars 417 that are arranged in a mirror-symmetrical manner with respect to the central axis of the connecting portion 41. The connecting bar 417 of the pressure structure has the same structure as the connecting bar 417 of the receiving structure. The connecting bar 417 is respectively fixedly connected to its corresponding high-voltage pulse generator 415 or DC leakage current detector 416. The connecting strip 417 is extended along the Y-shaped groove 419 to the V-shaped groove 418 of the connecting part 41 to which it is located. The side of the high-voltage pulse generator 415 and the DC leakage current detector 416 away from the connecting strip 417 is fixedly connected with the second electric push rod 421. The side of the second electric push rod 421 away from the high-voltage pulse generator 415 or the DC leakage current detector 416 is embedded in the fixing part 42. The second electric push rod 421 is fixedly connected to the fixing part 42. The high-voltage pulse generator 415, the DC leakage current detector 416 and the second electric push rod 421 are all electrically connected to the data processing station 3. The two ends of the same side of the V-shaped groove 418 are fixedly connected with the return spring 414. The return spring 414 extends toward the Y-shaped groove 419. The extended end of the return spring 414 abuts against the second clamping strip 413 in the end of the V-shaped groove 418.

[0046] The Y-shaped groove 419 is used to communicate with the V-shaped groove 418, providing installation and operation space for the pressure-applying structure and the receiving structure, and providing an extension path for the connecting strip 417, so that the connecting strip 417 can move into the V-shaped groove 418 and then connect with the fixture. The high-voltage pulse generator 415 is used to generate high-voltage current, and the withstand voltage of the coil is detected by the high-voltage current. The DC leakage current detector 416 is used to measure the leakage current of the coil under high voltage conditions, and convert the leakage current into data that can be understood by the PLC module, so that the PLC module can calculate and judge the withstand voltage and insulation performance of the coil based on the data. By combining the two test methods of high-voltage pulse test and DC leakage measurement, the withstand voltage and insulation performance of the coil can be detected at the same time, and the overall performance of the coil can be detected from multiple dimensions. The connecting strip 417 is used to connect the high-voltage pulse generator 415 or the DC leakage current detector 416 to the fixture, and then connect to the coil through the fixture, so as to detect the coil. The connecting strip 417 should be composed of metal copper with excellent elasticity and ductility and conductivity. The second electric push rod 421 is used to push the high-voltage pulse generator 415 or the DC leakage current detector 416 to move toward the middle of the connecting part 41, so that the connecting strip 417 moves toward the fixture along the Y-shaped groove 419, so that the connecting strip 417 is connected to the fixture, and the fixture is pushed to move in the opposite direction to the reset spring 414 by the connecting strip 417, so that the two fixtures of the same connecting part 41 clamp the ends of the coil, and the connection between the fixture and the coil is realized. The thickness of the connecting strip 417 should be the same as the width of the two ends on the same side of the Y-shaped groove 419, so as to ensure that it will not bend when pushing the fixture. The second electric push rod 421 is used to push the connecting strip 417 to connect with the fixture and push the fixture to clamp the coil, so that when the connecting part 41 is not working, the connecting strip 417 is disconnected from the fixture, so as to avoid the situation that the high-voltage pulse generator 415 or the DC leakage current detector 416 is still powered when it is not working due to a malfunction, and the operator or maintenance personnel are not electrocuted, so as to ensure the life safety of the operator or maintenance personnel. The return spring 414 is used to push the coil clamp 51 to separate when the two clamps of the same connecting portion 41 are separated from the coil end, and to fix the position of the clamp after separation to prevent the clamp from rotating.

[0047] In this embodiment, a first electric push rod 43 is fixedly connected to one side of the fixing portion 42 away from the connecting portion 41, the first electric push rod 43 is embedded in the detection platform 2, and the first electric push rod 43 is electrically connected to the data processing platform 3. The first electric push rod 43 is used to lift the fixing portion 42, and then lift the connecting portion 41, so that the fixture can adapt to different coils, and ensure that the connecting portion 41 will not hinder the movement of the clamping device 5 after the detection is completed.

[0048] The specific operation steps of the coil withstand voltage detection method of this embodiment are as follows:

[0049] S1: The staff places the coils one by one on different clamping devices 5 in front of the test device 4, and makes the two ends of the coils face downward and perpendicular to the test table 2. The data processing table 3 controls the clamping devices 5 to clamp and fix the coils;

[0050] S2: The data processing station 3 controls the first driving motor 11 to drive the ring chain 13 according to the number of the testing devices 4, and the ring chain 13 drives the clamping devices 5 having the same number as the testing devices 4 to move to the top of the corresponding testing devices 4;

[0051] S3: The testing device 4 connects the two ends of the coil fixed by the clamping device 5 directly above it, applies a pulse high voltage to one end of the coil, checks the leakage current at the other end of the coil, and transmits the detection data to the data processing station 3;

[0052] S4: The data processing station 3 determines the pressure resistance of the coil according to the data sent back by the testing device 4, transports the unqualified coil to the recycling box 6 corresponding to the unqualified coil, controls the clamping device 5 to release the unqualified coil, and controls the lifting structure to flip the clamping device 5, and puts the unqualified coil into the recycling box 6, and puts the qualified coil into the recycling box 6 corresponding to the qualified coil in the same way as the unqualified coil.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A coil withstand voltage detection device, characterized in that: The invention comprises an annular conveyor platform (1), an inspection platform (2), and a data processing platform (3); the inspection platform (2) is located on one side of the annular conveyor platform (1) and is fixedly connected to the annular conveyor platform (1); two recovery boxes (6) are abutted on the side of the annular conveyor platform (1) away from the inspection platform (2); the annular conveyor platform (1) is fixedly connected to an annular guide rail (12); the annular guide rail (12) is close to the edge of the annular conveyor platform (1); a plurality of clamping devices (5) for fixing coils are slidably connected to the guide rail; a lifting structure for flipping the clamping device (5) is provided inside the clamping device (5); The annular conveyor platform (1) is slidably connected to an annular chain (13) for driving the clamping device (5) to move. The annular chain (13) is located on the inner side of the annular guide rail (12). Both sides of the inner side of the annular conveyor platform (1) are fixedly connected to a first drive motor (11) for driving the annular chain (13) to move. The first drive motor (11) is connected to the chain transmission. The detection platform (2) is provided with a plurality of test devices (4) for applying pulse high voltage to the coil and detecting the leakage current of the coil. The test devices (4) and the clamping device (5) are electrically connected to the data processing platform (3).

2. The coil withstand voltage detection device according to claim 1, characterized in that: The clamping device (5) comprises a coil clamp (51), a support frame (52), and a movable base (53); the support frame (52) and the movable base (53) are fixedly connected; the coil clamp (51) is located on the support frame (52) and abuts against the support frame (52); one side of the coil clamp (51) is rotatably connected to the support frame (52); the lifting structure is located in the support frame (52); and a side of the movable base (53) facing away from the support frame (52) is rotatably connected to a plurality of rotating wheels (531). The rotating wheels (531) are arranged in pairs, and the rotating wheels (531) of the same pair are respectively close to the two sides of the movable base (53), and the rotating wheels (531) of the same pair are slidably connected to the two sides of the annular guide rail (12). A movable protrusion (532) is fixedly connected to the side of the movable base (53) away from the rotation connection between the coil clamp (51) and the support frame (52), and the movable protrusion (532) is fixedly connected to the annular chain (13), and the coil clamp (51) is electrically connected to the data processing station (3).

3. The coil withstand voltage detection device according to claim 2, characterized in that: The lifting structure comprises a hydraulic rod (54) and a fixing member (533), wherein the hydraulic rod (54) is located in the support frame (52), the fixing member (533) is located on the side of the movable base (53) facing the support frame (52) and is fixedly connected to the movable base (53), the end of the hydraulic rod (54) away from its push rod is rotatably connected to the fixing member (533), the push rod of the hydraulic rod (54) is rotatably connected to the side of the coil clamp (51) facing the support frame (52), and the hydraulic rod (54) is electrically connected to the data processing station (3).

4. The coil withstand voltage detection device according to claim 2 or 3, characterized in that: The coil clamp (51) comprises a threaded rod (511), a second drive motor (514), and two C-shaped clamping members (512); the threaded rod (511) is located inside one side of the coil clamp (51) and is rotatably connected to the coil clamp (51); the second drive motor (514) is fixedly connected to the coil clamp (51); a linkage structure for enabling the second drive motor (514) to drive the threaded rod (511) to rotate is provided between the second drive motor (514) and the threaded rod (511); a moving block (513) is fixedly connected to one end of the two C-shaped clamping members (512) facing the threaded rod (511); the moving block (513) is threadably connected to the threaded rod (511); a side surface of the moving block (513) abuts against the coil clamp (51); the two C-shaped clamping members (512) extend toward the same outer side of the coil clamp (51); and the second drive motor (514) is electrically connected to a data processing station (3).

5. The coil withstand voltage detection device according to claim 1, characterized in that: The test device (4) comprises a fixing portion (42) and two connecting portions (41), wherein the two connecting portions (41) are embedded in the fixing portion (42) from the same side of the fixing portion (42), and the two connecting portions (41) are provided with connecting structures with the same structure for connecting to the two ends of the coil respectively, and the two connecting portions (41) are also provided with a pressure structure for pushing the connecting structure to connect to one end of the coil and apply high voltage to the coil, and a receiving structure for pushing the connecting structure to connect to the other end of the coil and receive the leakage current of the coil under high voltage, and the pressure structure and the receiving structure are both electrically connected to the data processing station (3).

6. The coil withstand voltage detection device according to claim 5, characterized in that: A V-shaped groove (418) is provided in the connecting portion (41), the V-shaped groove (418) is connected to a side of the connecting portion (41) away from the fixing portion (42), both ends of the same side of the V-shaped groove (418) extend toward the middle of the connecting portion (41), the connecting structure comprises a pair of clamps for clamping the coil ends, the two clamps are respectively located on both sides of the V-shaped groove (418), the two clamps are arranged in mirror symmetry with respect to the central axis of the connecting portion (41), the clamps comprise a first clamping strip (411), a rotating member (412), and a second clamping strip (413), the rotating member (412) is located on the V-shaped groove ( The rotating member (412) is rotatably connected to the connecting portion (41), one end of the first clamping strip (411) and one end of the second clamping strip (413) are fixedly connected to the rotating member (412), the first clamping strip (411) extends along the V-shaped groove (418) toward the side of the connecting portion (41) away from the fixed portion (42) and extends out of the connecting portion (41), the second clamping strip (413) extends along the V-shaped groove (418) toward the middle of the connecting portion (41), and the thickness of the first clamping strip (411) and the second clamping strip (413) are less than the width of the V-shaped groove (418).

7. The coil withstand voltage detection device according to claim 6, characterized in that: The connecting portion (41) is provided with a Y-shaped groove (419), and the Y-shaped groove (419) is connected to one side of the connecting portion (41) facing the fixing portion (42). Both ends of the same side of the Y-shaped groove (419) extend toward the middle of the connecting portion (41) and are respectively connected to both ends of the same side of the V-shaped groove (418). The pressure-applying structure and the receiving structure are respectively located in the Y-shaped groove (419) of the connecting portion (41) where they are located. The pressure-applying structure includes a high-voltage pulse generator (415) and two connecting portions. The receiving structure comprises a connecting bar (417) which is arranged in a mirror-symmetrical manner with respect to the central axis of the connecting portion (41), the connecting bar (417) of the pressure-applying structure is identical in structure to the connecting bar (417) of the receiving structure, the connecting bar (417) is respectively fixedly connected and electrically connected to the corresponding high-voltage pulse generator (415) or the direct current leakage current detector (416), the connecting bar (417) extends along the Y-shaped groove (419) where it is located to the V-shaped groove (418) of the connecting portion (41) where it is located, the side of the high-voltage pulse generator (415) and the direct current leakage current detector (416) away from the connecting bar (417) is fixedly connected to a second electric push rod (421), the side of the second electric push rod (421) away from the high-voltage pulse generator (415) or the direct current leakage current detector (416) is embedded in the fixing portion (42), and the second electric push rod (421) is fixedly connected to the fixing portion (42). The V-shaped groove (418) is fixedly connected to the fixing portion (421), the high-voltage pulse generator (415), the DC leakage current detector (416), and the second electric push rod (421) are all electrically connected to the data processing station (3), and both ends of the same side of the V-shaped groove (418) are fixedly connected with a return spring (414), and the return spring (414) extends toward the Y-shaped groove (419), and the extended end of the return spring (414) abuts against the second clamping strip (413) in the end of the V-shaped groove (418).

8. The coil withstand voltage detection device according to claim 5, 6 or 7, characterized in that: A first electric push rod (43) is fixedly connected to the side of the fixing portion (42) facing away from the connecting portion (41); the first electric push rod (43) is embedded in the detection platform (2); and the first electric push rod (43) is electrically connected to the data processing platform (3).

9. A coil withstand voltage detection method, characterized in that: The device comprises a coil withstand voltage detection device as claimed in any one of claims 1 to 8, and the specific operation steps are as follows: S1: A staff member places the coils one by one on different clamping devices (5) in front of a testing device (4), and makes the two ends of the coils face downward and perpendicular to the testing table (2). The data processing table (3) controls the clamping devices (5) to clamp and fix the coils; S2: The data processing station (3) controls the first driving motor (11) to drive the ring chain (13) according to the number of the testing devices (4), and the ring chain (13) drives the clamping devices (5) having the same number as the testing devices (4) to move to the top of the corresponding testing devices (4); S3: The testing device (4) is connected to the two ends of the coil fixed by the clamping device (5) directly above it, and a pulse high voltage is applied to one end of the coil to check the leakage current of the other end of the coil, and the detection data is transmitted to the data processing station (3); S4: The data processing station (3) determines the pressure resistance of the coil according to the data sent back by the test device (4), transports the unqualified coil to the recycling box (6) corresponding to the unqualified coil, controls the clamping device (5) to release the unqualified coil, and controls the lifting structure to flip the clamping device (5) to place the unqualified coil into the recycling box (6), and places the qualified coil into the recycling box (6) corresponding to the qualified coil in the same manner as the unqualified coil.

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