Frequency converter testing device

Abstract

The utility model relates to the technical field of frequency converter testing, in particular to a frequency converter testing device which comprises a carrying table, a first detection assembly, a second detection assembly, a first jacking air cylinder and a lifting air cylinder. The lifting air cylinder and the second jacking air cylinder are matched to drive the second detection column to be connected with the testing part on the frequency converter in an inserted mode. Compared with the prior art, the technical scheme adopted by the utility model not only can be suitable for testers with longer cables, but also can be convenient for testers with shorter cables to test, so that the test accuracy is improved, and the test efficiency is improved. And the practicability of the frequency converter testing device is improved.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter testing technology, and specifically to a frequency converter testing device. Background Technology

[0002] A frequency converter is a power control device that uses frequency conversion technology and microelectronics to control an AC motor by changing the frequency of the power supply. Before being assembled and shipped from the factory, frequency converters need to be tested using various testing devices to determine their qualification.

[0003] Inverter testing devices typically include a corresponding tester and a test post electrically connected to the tester. Currently, during testing, the test post electrically connected to the tester is usually inserted into the test point on the inverter for testing. However, due to the different cable lengths for different testers, existing technologies usually only set a corresponding lifting cylinder at the bottom of the platform where the inverter is placed to lift the platform, allowing the test part on the inverter to be inserted and tested with the test post above. However, due to the limitation of the test post position, the lifting height of the lifting cylinder is limited, and it can only accommodate testers with shorter cables. When the cable is longer, the cable is easy to get tangled, affecting the test. Existing inverter testing devices are not convenient for testing testers with longer cables, and their practicality is limited. Utility Model Content

[0004] The technical solution adopted by this utility model to solve its technical problem is: to provide a frequency converter testing device, comprising:

[0005] A platform for placing the frequency converter;

[0006] The first detection component includes a support frame, a tester and a detection column disposed on the support frame, the detection column and the tester are electrically connected by a cable, and the support frame is provided with a mounting plate for supporting the detection column.

[0007] The second detection component includes a second support frame, a second tester mounted on the second support frame, and a lifting cylinder. The output end of the lifting cylinder is provided with a second mounting plate, and the second mounting plate is provided with a second detection column. The lifting cylinder is used to cooperate with the second lifting cylinder to drive the second detection column and the test part on the frequency converter to insert the second detection column. The second detection column and the second tester are electrically connected by a cable, and the cable length corresponding to the second tester is greater than the cable length corresponding to the first tester.

[0008] The first lifting cylinder corresponds to the first detection component. The first lifting cylinder is used to drive the platform to be lifted to a position corresponding to the detection column.

[0009] The second lifting cylinder corresponds to the second detection component. The second lifting cylinder is used to drive the platform to be lifted to correspond to the second detection column.

[0010] Furthermore, it also includes an XYZ three-axis moving module, the output end of which is provided with a support plate, the support plate is provided with a gripper cylinder, the output end of which is provided with a gripper, and the XYZ three-axis moving module is used to drive the gripper to hold the frequency converter and transfer it to the platform.

[0011] Furthermore, the XYZ three-axis moving module includes a first moving module, a second moving module disposed at the output end of the first moving module, and a third moving module disposed at the output end of the second moving module, wherein the gripper cylinder is connected to the output end of the third moving module.

[0012] Furthermore, it also includes a feeding conveyor belt, the output end of which corresponds to the gripper, and the feeding conveyor belt is used to transport the frequency converter to the position corresponding to the gripper.

[0013] Furthermore, it also includes a guide module, the output end of which is provided with a guide cylinder. The guide cylinder corresponds to the detection part on the frequency converter. Both the first mounting plate and the second mounting plate are provided with spherical holes. Both the first detection post and the second detection post are provided with ball seats that are adapted to the spherical holes. The ball seats are rotatably disposed in the spherical holes. The guide module is used to drive the guide cylinder to correspond to the test part on the frequency converter. The inner diameter of the guide cylinder is adapted to the detection post. The guide cylinder is used to guide the first detection post and the second detection post.

[0014] Furthermore, the guide cylinder includes a straight cylindrical section with a rectangular cross-section and a conductive section with a frustum cross-section. The inner diameter of the straight cylindrical section is adapted to both the first detection column and the second detection column. The conductive section is farther away from the inverter than the straight cylindrical section, and the inner diameter of the conductive section on the side closer to the inverter is smaller than the inner diameter of the side of the conductive section farther away from the inverter.

[0015] Furthermore, the guide module includes a mounting frame, a first movable cylinder disposed on the mounting frame, a second movable cylinder disposed at the output end of the first movable cylinder, and a third movable cylinder disposed at the output end of the second movable cylinder. The output end of the third movable cylinder is provided with a rotary cylinder. The output end of the rotary cylinder is fixedly connected to the guide cylinder. The rotary cylinder is used to drive the guide cylinder to correspond to the test part that is inclined on the frequency converter.

[0016] Furthermore, it also includes a limiting cylinder, the output end of which is provided with a limiting plate. The limiting cylinder corresponds to the platform, and the limiting cylinder is used to drive the limiting plate to abut against the frequency converter on the platform.

[0017] Furthermore, it also includes a high-speed chain for transporting the platform, the high-speed chain being used to transport the platform to one of the detection columns or the second detection column.

[0018] The beneficial effects of this utility model are as follows: It provides a frequency converter testing device, including a platform, a first detection component, a second detection component, a first lifting cylinder, and a lowering cylinder. During testing, the cable of the second testing instrument is longer, and the lifting cylinder and the second lifting cylinder work together to drive the second detection column to connect with the test part on the frequency converter. The cable of the first testing instrument is shorter, and only the first lifting cylinder is used to drive the first detection column, so that the test part on the frequency converter and the upper detection column are connected for testing. Compared with the prior art, the technical solution adopted by this utility model can accommodate both testing instruments with longer cables and testing instruments with shorter cables, thus improving the practicality of the frequency converter testing device. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] In the picture: Figure 1 A front view of a frequency converter testing device provided by this utility model;

[0021] Figure 2 for Figure 1 Front view of the middle section structure;

[0022] Figure 3 for Figure 2 A cross-sectional view of the mounting plate and guide cylinder shown at point A in the middle;

[0023] Figure 4 for Figure 1 A three-dimensional structural diagram of the middle section;

[0024] Figure 5 for Figure 1 A three-dimensional structural diagram of the middle section;

[0025] Figure 6 for Figure 1 A three-dimensional structural diagram of the middle section.

[0026] Explanation of reference numerals in the attached drawings: 10. Platform; 11. Limiting cylinder; 111. Limiting plate; 20. First detection component; 21. Support frame one; 211. Mounting plate one; 2111. Spherical hole; 22. Tester one; 23. Detection column one; 231. Ball seat; 31. Support frame two; 32. Tester two; 33. Lifting cylinder; 331. Mounting plate two; 332. Detection column two; 40. First lifting cylinder; 50. Second lifting cylinder; 60. Frame; 70. Multiplier 80. Speed ​​chain; 81. Guide module; 82. Guide cylinder; 83. Straight cylinder section; 84. Conductor section; 85. Mounting bracket; 86. First moving cylinder; 97. Second moving cylinder; 88. Third moving cylinder; 99. Rotary cylinder; 90. XYZ three-axis moving module; 91. Support plate; 92. Gripper cylinder; 93. Gripper; 94. First moving module; 95. Second moving module; 96. Third moving module; 200. Feeding conveyor belt; 200. Frequency converter. Detailed Implementation

[0027] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, illustrating only the basic aspects of the present utility model, and therefore only shows the components relevant to the present utility model. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] Please refer to Figure 1-6 A frequency converter testing device is provided, including a stage 10, a first detection component 20, a second detection component, a first lifting cylinder 40 and a second lifting cylinder 50, and a frame 60 for supporting the above-mentioned components.

[0029] The first testing component 20 includes a support frame 21, a tester 22 and a testing column 23 mounted on the support frame 21. The testing column 23 and the tester 22 are electrically connected by a cable. The support frame 21 is provided with a mounting plate 211 for supporting the testing column 23.

[0030] The second testing component includes a support frame 31, a tester 32 mounted on the support frame 31, and a lifting cylinder 33. The output end of the lifting cylinder 33 is mounted on a mounting plate 331, and the output end of the lifting cylinder 33 faces the frequency converter 200. The lifting cylinder 33 is used in conjunction with the second lifting cylinder 50 to drive the test column 332 to connect with the test section on the frequency converter 200. The mounting plate 331 has the test column 332, which is electrically connected to the tester 32 via a cable. The cable length of the tester 32 is longer than that of the tester 22. Specifically, the cables of the tester 22 and the tester 32 are not shown, and the types of the tester 22 and the tester 32 are not limited.

[0031] The first lifting cylinder 40 corresponds to the first detection component 20, and is used to drive the platform 10 to rise to correspond with the first detection column 23. The second lifting cylinder 50 corresponds to the second detection component, and is used to drive the platform 10 to rise to correspond with the second detection column 332. Specifically, in this embodiment, both the first lifting cylinder 40 and the second lifting cylinder 50 are fixed to the bottom end of the frame 60.

[0032] The stage 10 is used to place the frequency converter 200. The frequency converter testing device also includes a double-speed chain 70 for transporting the stage 10. The double-speed chain 70 is used to transport the stage 10 to either the first detection column 23 or the second detection column 332. Specifically, in this embodiment, the number of the first detection component 20 and the second detection component is not limited; the multiple first detection components 20 shown in the figure are only for illustration. The frequency converter 200 is transferred between the first detection component 20 and the second detection component via the double-speed chain 70.

[0033] During testing, the cable of tester 2 32 is relatively long. The lifting cylinder 33 and the second lifting cylinder 50 work together to drive the detection column 2 332 to descend and connect with the test section on the inverter 200, making the cable of tester 2 32 less prone to tangling. The cable of tester 1 22 is shorter. Only the first lifting cylinder 40 drives the detection column 23, allowing the test section on the inverter 200 to connect with the detection column 23 above for testing. Compared to existing technologies, the technical solution adopted in this invention can accommodate both testers with longer cables and those with shorter cables, improving the practicality of the inverter testing device.

[0034] The inverter testing device also includes a guide module 80. The output end of the guide module 80 is provided with a guide cylinder 81. The guide cylinder 81 corresponds to the detection part on the inverter 200. Mounting plate 1 211 and mounting plate 2 331 are both provided with spherical holes 2111. Detection column 1 23 and detection column 2 332 are both provided with ball seats 231 that are adapted to the spherical holes 2111. The ball seats 231 are rotatably set in the spherical holes 2111. The guide module 80 is used to drive the guide cylinder 81 to correspond to the test part on the inverter 200. The inner diameter of the guide cylinder 81 is adapted to the detection column. The guide cylinder 81 is used to guide the detection column 1 23 and detection column 2 332.

[0035] Furthermore, the guide cylinder 81 includes a straight cylindrical portion 811 with a rectangular cross-section and a conducting portion 812 with a frustum cross-section. The inner diameter of the straight cylindrical portion 811 is compatible with both the first detection column 23 and the second detection column 332. The conducting portion 812 is farther away from the inverter 200 than the straight cylindrical portion 811. The inner diameter of the conducting portion 812 on the side closer to the inverter 200 is smaller than the inner diameter of the end of the conducting portion 812 away from the inverter 200.

[0036] When detection column 23 or detection column 332 needs to be inserted into the test part on the frequency converter 200, the guide cylinder 81 is first moved by the guide module 80 to correspond to the test part on the frequency converter 200. Then, the detection column 23 or detection column 332 is moved by the first lifting cylinder 40 or the second lifting cylinder 50 in conjunction with the lifting cylinder 33. The end of the detection column 23 or detection column 332 first enters the conducting part 812 of the guide cylinder 81, and slides from the conducting part 812 into the straight cylinder part 811. During the sliding process from the conductive section 812 to the straight section 811, the inner wall of the conductive section 812 applies force to the detection post 23 or the detection post 332. The ball seat 231 on the detection post 23 or the detection post 332 rotates relative to the spherical hole 2111, causing the ball seat 231 to drive the detection post 23 or the detection post 332 to rotate and eventually slide along the straight section 811 to a position opposite to the test part on the inverter 200. This facilitates the insertion test of some of the inclined test parts on the inverter 200. If the test part on the inverter 200 is directly opposite the detection post 23 or the detection post 332, the ball seat 231 on the detection post 23 or the detection post 332 does not rotate. The detection post 23 or the detection post 332 directly enters the straight section 813 along the center position of the conductive section 812, and then the straight section 813 and the test part are aligned and inserted.

[0037] Furthermore, the guide module 80 includes a mounting frame 82, a first movable cylinder 83 mounted on the mounting frame 82, a second movable cylinder 84 mounted at the output end of the first movable cylinder 83, and a third movable cylinder 85 mounted at the output end of the second movable cylinder 84. The output end of the third movable cylinder 85 is provided with a rotary cylinder 86, and the output end of the rotary cylinder 86 is fixedly connected to the guide cylinder 81. The rotary cylinder 86 is used to drive the guide cylinder 81 to correspond to the inclined test section on the frequency converter 200. Specifically, in this embodiment, the first movable cylinder 83 is arranged along the thickness direction of the frequency converter 200, the second movable cylinder 84 is arranged along the length direction of the frequency converter 200, and the third movable cylinder 85 is arranged along the width direction of the frequency converter 200. The rotary cylinder 86 is arranged along the width direction of the frequency converter 200. Both the first movable cylinder 83 and the second movable cylinder 84 are rodless cylinders. Specifically, in this embodiment, with the central axis in the width direction of the inverter 200 as the reference line, the rotation range of the guide cylinder 81 is -10 degrees to 10 degrees.

[0038] Specifically, except for the tester 32 and the lifting cylinder 33, the second detection component is the same as the first detection component 20. Therefore, the second detection component is not shown in detail in the figure.

[0039] The inverter testing device also includes an XYZ three-axis moving module 90. The output end of the XYZ three-axis moving module 90 is provided with a support plate 91. The support plate 91 is provided with a gripper cylinder 92. The output end of the gripper cylinder 92 is provided with a gripper 921. The XYZ three-axis moving module 90 is used to drive the gripper 921 to clamp the inverter 200 and transfer it to the platform 10.

[0040] Furthermore, the XYZ three-axis moving module 90 includes a first moving module 93, a second moving module 94 disposed at the output end of the first moving module 93, and a third moving module 95 disposed at the output end of the second moving module 94. The gripper cylinder 92 and the output end of the third moving module 95 are fixedly connected. The first moving module 93 is disposed along the width direction of the inverter 200, the second moving module 94 is disposed along the length direction of the inverter 200, and the third moving module 95 is disposed along the thickness direction of the inverter 200. Specifically, in this embodiment, the first moving module 93, the second moving module 94, and the third moving module 95 are all screw drive structures.

[0041] The frequency converter testing device also includes a feeding conveyor belt 96, the output end of which corresponds to the gripper 921. The feeding conveyor belt 96 is used to transport the frequency converter 200 to the position corresponding to the gripper 921.

[0042] The inverter testing device also includes a limit cylinder 11, which corresponds to the platform 10. The output end of the limit cylinder 11 is provided with a limit plate 111, which corresponds to the platform 10. The limit cylinder 11 is used to drive the limit plate 111 to press against the inverter 200 on the platform 10, so that the inverter 200 is not easily moved during testing.

Claims

1. A frequency converter testing device, characterized in that, include: A platform for placing the frequency converter; The first detection component includes a support frame, a tester and a detection column disposed on the support frame, the detection column and the tester are electrically connected by a cable, and the support frame is provided with a mounting plate for supporting the detection column. The second detection component and the second lifting cylinder correspond to each other. The second detection component includes a second support frame, a second tester mounted on the second support frame, and a lifting cylinder. The output end of the lifting cylinder is provided with a second mounting plate, and the second mounting plate is provided with a second detection column. The second lifting cylinder is used to drive the platform to be lifted to correspond to the second detection column. The lifting cylinder is used to cooperate with the second lifting cylinder to drive the second detection column to be inserted into the test part on the frequency converter. The second detection column and the second tester are electrically connected by a cable. The cable length corresponding to the second tester is greater than the cable length corresponding to the first tester. The first lifting cylinder corresponds to the first detection component and is used to drive the platform to be lifted to a position corresponding to the detection column.

2. The inverter testing device according to claim 1, characterized in that: It also includes an XYZ three-axis moving module, the output end of which is provided with a support plate, the support plate is provided with a gripper cylinder, the output end of which is provided with a gripper, and the XYZ three-axis moving module is used to drive the gripper to hold the frequency converter and transfer it to the platform.

3. The inverter testing device according to claim 2, characterized in that: The XYZ three-axis moving module includes a first moving module, a second moving module disposed at the output end of the first moving module, and a third moving module disposed at the output end of the second moving module. The gripper cylinder is connected to the output end of the third moving module.

4. The inverter testing device according to claim 2, characterized in that: It also includes a feeding conveyor belt, the output end of which corresponds to the gripper, and the feeding conveyor belt is used to transport the frequency converter to the position corresponding to the gripper.

5. The inverter testing device according to claim 1, characterized in that: It also includes a guide module, the output end of which is provided with a guide cylinder. The guide cylinder corresponds to the detection part on the frequency converter. Both the first mounting plate and the second mounting plate are provided with spherical holes. Both the first detection column and the second detection column are provided with ball seats that are adapted to the spherical holes. The ball seats are rotatably disposed in the spherical holes. The guide module is used to drive the guide cylinder to correspond to the test part on the frequency converter. The inner diameter of the guide cylinder is adapted to the detection column. The guide cylinder is used to guide the first detection column and the second detection column.

6. The inverter testing device according to claim 5, characterized in that: The guide cylinder includes a straight cylindrical section with a rectangular cross-section and a conductive section with a frustum cross-section. The inner diameter of the straight cylindrical section is adapted to both the first detection column and the second detection column. The conductive section is farther away from the inverter than the straight cylindrical section. The inner diameter of the conductive section on the side closer to the inverter is smaller than the inner diameter of the side of the conductive section farther away from the inverter.

7. The inverter testing device according to claim 6, characterized in that: The guide module includes a mounting frame, a first movable cylinder mounted on the mounting frame, a second movable cylinder mounted on the output end of the first movable cylinder, and a third movable cylinder mounted on the output end of the second movable cylinder. The output end of the third movable cylinder is provided with a rotary cylinder. The output end of the rotary cylinder is fixedly connected to the guide cylinder. The rotary cylinder is used to drive the guide cylinder to correspond to the test part that is inclined on the frequency converter.

8. The inverter testing device according to claim 1, characterized in that: It also includes a limit cylinder, the output end of which is provided with a limit plate. The limit cylinder corresponds to the platform, and the limit cylinder is used to drive the limit plate to abut against the frequency converter on the platform.

9. The inverter testing device according to claim 1, characterized in that: It also includes a high-speed chain for transporting the stage, the high-speed chain being used to transport the stage to one of the detection columns or the second detection column.

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