AC motor performance automatic detection equipment

Abstract

The utility model discloses AC motor performance automatic detection equipment, which comprises a case, a control electric cabinet arranged on the rear side of the case, a PLC (programmable logic controller) arranged in the control electric cabinet, a turntable arranged in the middle of the case, six in-place detection devices arranged above the center of the turntable, six stations arranged on the turntable, and a positioning jig arranged on each station, the outer side of each positioning tool is provided with a conduction clamp, the upper part of the cabinet is provided with a first insulation voltage-withstanding tester, a second insulation voltage-withstanding tester, a turn-to-turn waveform instrument and a characteristic power meter, and the lower part of the cabinet is provided with a variable-frequency power supply. The first insulation voltage-withstanding tester, the second insulation voltage-withstanding tester, the turn-to-turn waveform instrument, the characteristic power meter and the variable-frequency power supply are respectively connected with a group of test probes, a copper block is arranged on the bottom wall of the turntable, and the plurality of groups of test probes are positioned below the turntable and are distributed in a circumferential array manner. According to the utility model, the product can be automatically detected, the working efficiency is improved, and historical detection data can be looked up.

Description

TECHNICAL FIELD

[0001] The utility model relates to AC motor performance detection device technical field, concretely is a kind of AC motor performance automatic detection equipment. BACKGROUND

[0002] At present, in the production process of market AC motor, the performance detection of product motor machine such as pressure insulation 1 / coil turn-to-turn / power characteristic / pressure insulation 2 / running direction is needed, but the existing detection instrument and equipment are basically imported, and there are few domestic ones, and the detection is all the test operation mode using manual handheld instrument line.In addition, due to the large difference in the types and specifications of motor products, it is very troublesome to switch models, there is no detection record data, and historical data cannot be consulted. INVENTION CONTENTS

[0003] The utility model aims at overcoming the shortcomings of the prior art, providing an AC motor performance automatic detection equipment which can automatically detect products, improve work efficiency and consult historical detection data.

[0004] The utility model is realized through the following technical schemes: a kind of AC motor performance automatic detection equipment, including cabinet, the rear side of the cabinet is provided with control cabinet, PLC controller is provided in the control cabinet, the middle part of the cabinet is equipped with carousel, the center of the carousel is equipped with six to position detection device that is circularly arrayed, six work stations that are circularly arrayed are provided on the carousel, positioning jig is respectively provided on each work station, through clamp is provided on the outside of each positioning jig, the upper portion of the cabinet is provided with first insulation withstand voltage tester, second insulation withstand voltage tester, turn-to-turn wave analyzer, characteristic power meter, the lower portion of the cabinet is provided with variable frequency power supply, first insulation withstand voltage tester, second insulation withstand voltage tester, turn-to-turn wave analyzer, characteristic power meter and variable frequency power supply are respectively connected with a group of test probes, multiple test probes are located below carousel and are circularly arrayed, each test probe is independently connected with lifting mechanism, and the lifting mechanism is used to drive the test probe to lift, the bottom wall of the carousel is provided with copper block, the positioning jig is used to place product, and the lead-out wire of product is contacted with copper block through through clamp, the test probe is contacted with copper block to be connected to test loop when rising, the position detection device, lifting mechanism, first insulation withstand voltage tester, second insulation withstand voltage tester, turn-to-turn wave analyzer, characteristic power meter and variable frequency power supply are electrically connected with PLC controller respectively.

[0005] Furthermore, the six workstations are divided into a first workstation, a second workstation, a third workstation, a fourth workstation, a fifth workstation, and a sixth workstation. The first workstation is used for loading and unloading materials, the second workstation is used for insulation withstand voltage testing, the third workstation is used for inter-turn waveform testing inside the coil, the fourth workstation is used for power characteristic and current characteristic testing, the fifth workstation is used for insulation withstand voltage testing, and the sixth workstation is used for rotation direction testing.

[0006] Furthermore, a rotating shaft is provided at the center of the turntable, and the rotating shaft is connected to an equally divided rotating mechanism.

[0007] Furthermore, the six positioning detection devices are mounted on a fixed frame, which is mounted on a support cylinder, and the support cylinder is rotatably connected to the rotating shaft via a bearing sleeve.

[0008] Furthermore: the lifting mechanism includes a cylinder and a lifting seat, the output shaft of the cylinder is connected to the lifting seat, and the test probe is disposed on the lifting seat.

[0009] Furthermore, each set of test probes consists of six pins arranged in a straight line.

[0010] Furthermore: the conductive clamp has a conductive foot, the turntable has a through hole for the conductive foot to pass through, and the copper block is connected to the lead wire of the product through the conductive foot.

[0011] Furthermore: an operation screen is hinged to the upper side wall of the chassis, and a keypad is provided on the front wall of the middle part of the chassis. The operation screen and the keypad are electrically connected to the PLC controller respectively.

[0012] Furthermore, the turntable, the conductive clamp, and the lifting seat are all made of bakelite material.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] By setting up six positioning fixtures arranged in a circular array on a turntable, the product is placed on the positioning fixture at the first station. The turntable then sequentially transports the product to the second, third, fourth, fifth, and sixth stations for sequential insulation withstand voltage testing, coil internal turn-to-turn waveform testing, power characteristic and current characteristic testing, insulation withstand voltage testing, and rotation direction testing. Afterward, the product is transported back to the first station. If the product passes inspection, it is removed from the positioning fixture; otherwise, it is removed and placed according to its designated category. This process achieves multi-stage testing of the product. During the testing process, no manual switching is required, achieving automation and improving work efficiency. In addition, product parameters and specifications can be input through the operation screen before product testing, and the parameter and specification data are stored in the PLC controller. When switching machine types before testing, the stored parameters are automatically retrieved from the data stored in the PLC controller. When changing testing machines, rapid switching between testing machines can be achieved. Furthermore, various testing instruments such as the first insulation withstand voltage tester, the second insulation withstand voltage tester, the inter-turn waveform meter, and the characteristic power meter transmit test data to the PLC controller's memory in real time, facilitating the retrieval of historical test data. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a front view of the present invention;

[0017] Figure 3 This is a side view of the present invention;

[0018] Figure 4 This is a top view of the present invention;

[0019] Figure 5 This is a schematic diagram of the structure of the turntable of this utility model. Figure 1 ;

[0020] Figure 6 This is a front view of the structure of the turntable of this utility model;

[0021] Figure 7 This is a schematic diagram of the structure of the turntable of this utility model. Figure 2 ;

[0022] Figure 8 This is a top view of the turntable of this utility model;

[0023] Figure 9 for Figure 8 Sectional view at point GG.

[0024] Explanation of reference numerals in the attached drawings: 1-Chassis, 2-Control cabinet, 3-Turntable, 4-Position detection device, 5-Positioning fixture, 6-Conduction clamp, 7-First insulation withstand voltage tester, 8-Second insulation withstand voltage tester, 9-Inter-turn waveform meter, 10-Characteristic power meter, 11-Variable frequency power supply, 12-Test probe, 13-Conduction pin, 14-Through hole, 15-Lifting mechanism, 16-First station, 17-Second station, 18-Third station, 19-Fourth station, 20-Fifth station, 21-Sixth station, 22-Protective plate, 23-Walking wheel, 24-Rotating shaft, 25-Equal division rotation mechanism, 26-Fixed frame, 27-Support cylinder, 28-Cylinder, 29-Lifting seat, 30-Ejector pin, 31-Operating panel, 32-Keypad, 33-Product. Detailed Implementation

[0025] Figures 1 to 9 This utility model provides a schematic diagram of the structure of an automatic AC motor performance testing device, including a chassis 1, a control cabinet 2 located at the rear of the chassis 1, a PLC controller inside the control cabinet 2, a turntable 3 in the middle of the chassis 1, six positioning detection devices 4 arranged in a circular array above the center of the turntable 3, six workstations arranged in a circular array on the turntable 3, each workstation having a positioning fixture 5, and a conductive clamp 6 on the outer side of each positioning fixture 5. The upper part of the chassis 1 includes a first insulation withstand voltage tester 7, a second insulation withstand voltage tester 8, an inter-turn waveform meter 9, and a characteristic power meter 10. The lower part of the chassis 1 includes a frequency converter 11. Test instrument 8, inter-turn waveform meter 9, characteristic power meter 10 and frequency converter 11 are each connected to a set of test probes 12. Multiple sets of test probes 12 are located below turntable 3 and are arranged in a circular array. Each set of test probes 12 is independently connected to lifting mechanism 15. Lifting mechanism 15 is used to drive test probe 12 to rise and fall. Copper block is provided on the bottom wall of turntable 3. Positioning fixture 5 is used to place product 33. The lead wire of product 33 contacts the copper block through conductive clamp 6. Test probe 12 rises and contacts the copper block to conduct the test circuit. Position detection device 4, lifting mechanism 13, first insulation withstand voltage tester 7, second insulation withstand voltage tester 8, inter-turn waveform meter 9, characteristic power meter 10 and frequency converter 11 are electrically connected to PLC controller.

[0026] The six workstations are divided into workstation 16, workstation 17, workstation 18, workstation 19, workstation 20, and workstation 21. Workstation 16 is used for loading and unloading materials, workstation 17 is used for insulation withstand voltage testing, workstation 18 is used for coil internal turn waveform testing, workstation 19 is used for power characteristic and current characteristic testing, workstation 20 is used for insulation withstand voltage testing, and workstation 21 is used for rotation direction testing.

[0027] A protective plate 22 is provided on the front side of the middle part of the chassis 1, and a walking wheel 23 is provided on the bottom side of the chassis 1.

[0028] The protective plate 22 can improve the protection effect and enhance safety, while the wheels 23 facilitate the movement of the chassis 1.

[0029] A rotating shaft 24 is provided at the center of the turntable 3, and the rotating shaft 24 is connected to the equally divided rotating mechanism 25.

[0030] The technical application and usage instructions for the positioning detection device 4 and the equally divided rotation mechanism 25 are very mature and complete, and their related structures will not be elaborated in this article.

[0031] Six positioning detection devices 4 are mounted on a fixed frame 26, which is mounted on a support cylinder 27. The support cylinder 27 is rotatably connected to the bearing sleeve and the rotating shaft 24.

[0032] The lifting mechanism 15 includes a cylinder 28 and a lifting seat 29. The output shaft of the cylinder 28 is connected to the lifting seat 29, and the test probe 12 is set on the lifting seat 29.

[0033] Each set of test probes 12 consists of six pins 30 arranged in a straight line.

[0034] The conductive clamp 6 has a conductive foot 13, and the turntable 3 has a through hole 14 for the conductive foot 13 to pass through. The copper block is connected to the lead wire of the product 33 through the conductive foot 13.

[0035] An operation panel 31 is hinged to the upper side wall of the chassis 1, and a keypad 32 is provided on the front wall of the middle part of the chassis 1. The operation panel 31 and the keypad 32 are electrically connected to the PLC controller respectively.

[0036] Turntable 3, conductive clamp 6, and lifting seat 29 are all made of bakelite.

[0037] During operation, product 33 is placed on the positioning fixture 5 at the first station 16. Pressing the button on the keypad 32 activates the equal-division rotation mechanism 25, driving the rotating shaft 24 to rotate the turntable 3. Product 33 on the positioning fixture 5 rotates with the turntable 3 to the second station 17. The corresponding arrival detection device 4 at the second station 17 detects that product 33 has arrived and sends a signal to close the equal-division rotation mechanism 25, stopping the turntable 3. At this time, the cylinder 28 corresponding to the second station 17 drives the lifting seat 29 to raise the test probe 12, which then contacts the copper block on the bottom wall of the turntable 3 to connect the test circuit. A high-voltage withstand voltage test is then performed on product 33 using the first insulation withstand voltage tester 7. After the test time is up, a voltage insulation resistance test is performed. Upon arrival, the process ends. Next, the equal-division rotating mechanism 25 drives the turntable 3 to rotate the product 33 to the third station 18. The corresponding arrival detection device 4 at the third station 18 detects that the product 33 has arrived and sends a signal to close the equal-division rotating mechanism 25, stopping the turntable 3. At this time, the cylinder 28 corresponding to the third station 18 drives the lifting seat 29 to raise the test probe 12, which then contacts the copper block on the bottom wall of the turntable 3 to connect the test circuit. The inter-turn waveform meter 9 performs an internal inter-turn waveform test on the product 33. The test ends upon completion of the test time. The equal-division rotating mechanism 25 then drives the turntable 3 to rotate the product 33 to the fourth station 19. The corresponding arrival detection device 4 at the fourth station 19 detects that the product 33 has arrived and sends a signal. The equal-division rotation mechanism 25 is closed, and the turntable 3 stops rotating. At this time, the cylinder 28 corresponding to the fourth station 19 drives the lifting seat 29 to raise the test probe 12 and connect it to the copper block on the bottom wall of the turntable 3 to complete the test circuit. The power characteristics and current characteristics of the product 33 are tested at micro / low / medium / high speeds using the characteristic power meter 10. The test ends after the test time is up. The equal-division rotation mechanism 25 drives the turntable 3 to rotate the product 33 to the fifth station 20. After the arrival detection device 4 corresponding to the fifth station 20 detects that the product 33 has arrived, it sends a signal to close the equal-division rotation mechanism 25 and stop the turntable 3. At this time, the cylinder 28 corresponding to the fifth station 20 drives the lifting seat 29 to raise the test probe 12. The test circuit is connected by contacting the copper block on the bottom wall of the turntable 3. The product 33 is subjected to a high voltage withstand voltage test by the second insulation withstand voltage tester 8. After the test time is up, the voltage insulation resistance test is performed. The test ends after the test time is up. The equal division rotation mechanism 25 drives the turntable 3 to rotate the product 33 to the sixth station 21. After the position detection device 4 corresponding to the sixth station 21 detects that the product 33 has arrived, it sends a signal to control the equal division rotation mechanism 25 to close and control the turntable 3 to stop rotating. At this time, the cylinder 28 corresponding to the sixth station 21 drives the lifting seat 29 to drive the test probe 12 to rise and contact the copper block on the bottom wall of the turntable 3 to connect the test circuit. The rotation direction test of the product 33 is performed by the frequency converter 11. The test ends after the test time is up.The equal-division rotating mechanism 25 drives the turntable 3 to rotate the product 33 back to the first station 16. If the product 33 passes inspection, it is removed from the positioning fixture 5; otherwise, it is placed according to its designated category.

[0038] Throughout the entire product 33 testing process, product 33 only needs to be placed on the positioning fixture 5 corresponding to the first station 16. No manual switching operation is required for the various test items corresponding to other stations. In addition, the parameter specifications of product 33 are input through the operation screen 31 before testing, and the parameter data is stored in the PLC controller. When switching machine types before testing, the stored parameters automatically retrieve the data stored in the PLC controller. When changing the testing machine type, the testing machine type can be quickly switched. Moreover, the first insulation withstand voltage tester 7, the second insulation withstand voltage tester 8, the inter-turn waveform meter 9, the characteristic power meter 10 and other testing instruments transmit the test data to the PLC controller's memory in real time through the RS232 serial port, so as to facilitate the review of test history data.

[0039] The above detailed description is a specific description of a feasible embodiment of the present utility model. This embodiment is not intended to limit the patent scope of the present utility model. All equivalent implementations or modifications that do not depart from the present utility model should be included in the patent scope of this case.

Claims

1. An automatic performance testing device for AC motors, characterized in that: The device includes a chassis, a control cabinet located at the rear of the chassis, a PLC controller housed within the control cabinet, a turntable in the center of the chassis, and six positioning detection devices arranged in a circular array above the center of the turntable. Six workstations arranged in a circular array are located on the turntable, each workstation equipped with a positioning fixture, and each positioning fixture having a conductive clamp on its outer side. A first insulation withstand voltage tester, a second insulation withstand voltage tester, an inter-turn waveform meter, and a characteristic power meter are located on the upper part of the chassis, and a frequency converter is located on the lower part of the chassis. The power meter and the frequency converter are each connected to a set of test probes. Multiple sets of test probes are located below the turntable and arranged in a circular array. Each set of test probes is independently connected to a lifting mechanism, which drives the test probes to rise and fall. A copper block is provided on the bottom wall of the turntable. The positioning fixture is used to place the product. The product's lead wire contacts the copper block through the conductive clamp. The test probe rises and contacts the copper block to conduct the test circuit. The positioning detection device, the lifting mechanism, the first insulation withstand voltage tester, the second insulation withstand voltage tester, the inter-turn waveform meter, the characteristic power meter, and the frequency converter are all electrically connected to the PLC controller.

2. The automatic AC motor performance testing device according to claim 1, characterized in that: The six workstations are divided into a first workstation, a second workstation, a third workstation, a fourth workstation, a fifth workstation, and a sixth workstation. The first workstation is used for loading and unloading materials, the second workstation is used for insulation withstand voltage testing, the third workstation is used for inter-turn waveform testing inside the coil, the fourth workstation is used for power characteristic and current characteristic testing, the fifth workstation is used for insulation withstand voltage testing, and the sixth workstation is used for rotation direction testing.

3. The automatic AC motor performance testing device according to claim 1, characterized in that: The turntable has a rotating shaft at its center, and the rotating shaft is connected to an equally divided rotating mechanism.

4. The automatic AC motor performance testing device according to claim 3, characterized in that: The six positioning detection devices are mounted on a fixed frame, which is mounted on a support cylinder, and the support cylinder is rotatably connected to the rotating shaft via a bearing sleeve.

5. The automatic AC motor performance testing device according to claim 2, characterized in that: The lifting mechanism includes a cylinder and a lifting seat. The output shaft of the cylinder is connected to the lifting seat, and the test probe is mounted on the lifting seat.

6. The automatic AC motor performance testing device according to claim 5, characterized in that: Each set of test probes consists of six pins arranged in a straight line.

7. The automatic AC motor performance testing device according to claim 6, characterized in that: The conductive clamp has a conductive foot, and the turntable has a through hole for the conductive foot to pass through. The copper block is connected to the lead wire of the product through the conductive foot.

8. The automatic AC motor performance testing device according to claim 7, characterized in that: An operation screen is hinged to the upper side wall of the chassis, and a keypad is provided on the front wall of the middle part of the chassis. The operation screen and the keypad are electrically connected to the PLC controller.

9. The automatic AC motor performance testing device according to claim 8, characterized in that: The turntable, the conductive clamp, and the lifting seat are all made of bakelite.

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