Frequency converter double-station testing device

Abstract

The utility model is suitable for the technical field of frequency converter testing devices, and provides a double-station testing device for a frequency converter. The motor is fixed at the central position of the outer side wall of the base through a bolt; the ball screw is fixed at the output end of the motor; the first double-station table is fixed on a nut seat on the ball screw through a nut; the second double-station table is fixed on the outer side wall of the first double-station table through a bolt; the two frequency converter limiting holes are symmetrically formed in the tops of the first double-station table and the second double-station table; the fixed plate is fixed on the outer side wall of the base through a bolt; through the switching of the first double-station table and the second double-station table, the frequency converter on the first double-station table or the second double-station table can be taken down and then replaced with a subsequent frequency converter needing to be tested while testing is carried out, so that no conflict between feeding and discharging and testing is realized, and the testing efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of frequency converter testing devices, and in particular relates to a double-station testing device for a frequency converter. Background Art

[0002] The frequency converter is a power control device that uses frequency conversion technology and microelectronics technology to control the AC motor by changing the working power frequency of the motor. The frequency converter adjusts the voltage and frequency of the output power by the internal IGBT opening and closing, and provides the required power voltage according to the actual needs of the motor, thereby achieving the purpose of energy saving and speed regulation. In addition, the frequency converter has many protection functions, such as over-current, over-voltage, overload protection, etc. With the continuous improvement of industrial automation, frequency converters have also been widely used.

[0003] The inverter needs to be tested before leaving the factory to avoid problems such as internal short circuit and abnormal operation of the inverter. Therefore, factory testing is required to ensure the factory quality. The existing inverter testing device usually only has one workstation and needs to test the inverters one by one, which is inefficient.

[0004] Therefore, a dual-station test device for a frequency converter is proposed. Utility Model Content

[0005] The utility model provides a frequency converter double-station testing device, aiming to solve the above-mentioned problem.

[0006] The utility model is implemented as follows: a frequency converter double-station test device, comprising: a base; a motor fixed at the central position of the outer side wall of the base by bolts; a ball screw fixed to the output end of the motor; a first double-station platform fixed to the nut seat on the ball screw by a nut; a second double-station platform fixed to the outer side wall of the first double-station platform by bolts; two frequency converter limit holes symmetrically opened on the top of the first double-station platform and the second double-station platform; a fixing plate fixed to the outer side wall of the base by bolts; an electric push rod fixed to the top of the fixing plate by bolts; a lifting plate fixed to the output end of the electric push rod; a rotating cylinder fixed to the central position of the top of the lifting plate by bolts; a turntable fixed to the output end of the rotating cylinder; a digital multimeter probe and a power plug embedded in the bottom of the turntable, the digital multimeter probe is located on one side of the power plug; a digital multimeter, a display screen and a controller fixed to the top of the fixing plate by bolts, the digital multimeter and the display screen are both located on one side of the controller, and the digital multimeter is located on one side of the display screen.

[0007] Preferably, the first duplex platform and the second duplex platform are both slidably connected to the base via a slider and a slide groove.

[0008] Preferably, the cross section of the inverter limiting hole is the same as the cross section of the inverter housing.

[0009] Preferably, there are four electric push rods in total, and the four electric push rods are symmetrically arranged in a group of two on the top of the fixing plate, and the cross-section of the fixing plate is an L-shaped structure.

[0010] Preferably, the rotation angle of the output end of the rotary cylinder is 0-180 degrees.

[0011] Preferably, the lifting plate and the rotating plate are slidably connected.

[0012] Preferably, the motor, electric push rod, rotary cylinder and display screen are all electrically connected to the controller.

[0013] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0014] By switching between the first duplex table and the second duplex table, the inverter on the first duplex table or the second duplex table can be removed while testing is being carried out and replaced with the inverter that needs to be tested later, so that loading and unloading and testing do not conflict, and the test efficiency is improved. By switching the position of the digital multimeter probe and the power plug, the inverter power-off and power-on test can be automatically realized, without the need for manual testing with the probe, which further improves the test efficiency and reduces the labor intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the turntable structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the fixed plate structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the base structure of the utility model.

[0019] In the figure: 1. base; 2. motor; 3. ball screw; 4. first double-station platform; 5. second double-station platform; 6. inverter limit hole; 7. fixing plate; 8. electric push rod; 9. lifting plate; 10. rotating cylinder; 11. turntable; 12. digital multimeter probe; 13. power plug; 14. digital multimeter; 15. display screen; 16. controller. DETAILED DESCRIPTION

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] The utility model provides a dual-station test device for a frequency converter, such as Figure 1-4 As shown, it includes a base 1, a motor 2 is fixedly connected to the central position of the outer wall of one side of the base 1 by bolts, the motor 2 is fixedly connected to a ball screw 3 through the output end of one side thereof, the nut seat on the ball screw 3 is fixedly connected to a first duplex platform 4 through a nut, a second duplex platform 5 is fixedly connected to the outer wall of one side of the first duplex platform 4 by bolts, two inverter limit holes 6 are symmetrically provided on the top of the first duplex platform 4 and the second duplex platform 5, a fixing plate 7 is fixedly connected to the central position of the outer wall of one side of the base 1 adjacent to the motor 2 by bolts, an electric push rod 8 is fixedly connected to the top of the fixing plate 7 by bolts, a total of four electric push rods 8 are arranged, and the four electric push rods 8 are symmetrically arranged on the top of the fixing plate 7 in groups of two, the cross-section of the fixing plate 7 is an L-shaped structure, and the electric push rods 8 are fixedly connected to the outer wall of the first duplex platform 4 by bolts. The output end of the lifting plate 9 is fixedly connected with a lifting plate 9, and a rotating cylinder 10 is fixedly connected with the top center position of the lifting plate 9 by bolts. The rotation angle of the output end of the rotating cylinder 10 is 0-180 degrees. The rotating cylinder 10 is fixedly connected with a turntable 11 through the output end on one side thereof. The lifting plate 9 and the turntable 11 are slidably connected. A digital multimeter probe 12 and a power plug 13 are embedded in the bottom of the turntable 11. The digital multimeter probe 12 is located on one side of the power plug 13. The top of the fixed plate 7 is fixedly connected with a digital multimeter 14, a display screen 15 and a controller 16 by bolts. The digital multimeter 14 and the display screen 15 are both located on one side of the controller 16. The digital multimeter 14 is located on one side of the display screen 15. The motor 2, the electric push rod 8, the rotating cylinder 10 and the display screen 15 are all electrically connected to the controller 16.

[0023] It should be noted that since the existing inverter testing device usually has only one workstation, the inverters need to be tested one by one, which is inefficient. In this embodiment, by switching the first double-station platform 4 and the second double-station platform 5, the inverter on the first double-station platform 4 or the second double-station platform 5 can be removed while testing and replaced with the inverter that needs to be tested later, so as to achieve non-conflict between loading and unloading and testing, improve testing efficiency, and by switching the positions of the digital multimeter probe 12 and the power plug 13, the inverter power-off and power-on testing can be automatically realized, without the need for manual testing with the probe, further improving testing efficiency and reducing the labor intensity of workers.

[0024] Specifically, in the present embodiment, the scheme mainly includes a first duplex table 4, a second duplex table 5 and a turntable 11. When the frequency converter is tested, four frequency converter limiters are inserted into the frequency converter limiter holes 6 at the tops of the first duplex table 4 and the second duplex table 5. After the frequency converter is placed, the controller 16 controls the electric push rod 8 to work first. The electric push rod 8 drives the lifting plate 9 to move downward through the output end on one side thereof. The digital multimeter probe 12 on the lifting plate 9 is inserted into the power socket on the frequency converter. Whether the frequency converter has a problem is determined based on whether the digital multimeter 14 emits a buzzing sound. When the frequency converter is tested without any problem, the output end of the rotating cylinder 10 is controlled to rotate 180 degrees. The rotating cylinder 10 drives the turntable 11 to rotate 180 degrees through the output end on one side thereof. 0 degrees, the digital multimeter probe 12 and the power plug 13 are swapped. At this time, the electric push rod 8 controls the lifting plate 9 to move downward again, and the power plug 13 is inserted into the power socket on the inverter. After the inverter is powered on, observe whether it is operating normally. After completing the test, the rotating cylinder 10 drives the turntable 11 to reset through the output end on one side thereof, and the motor 2 drives the ball screw 3 to rotate through the output end on one side thereof. The first duplex table 4 on the ball screw 3 moves on the top of the base 1, and the second duplex table 5 moves synchronously. The inverter on the second duplex table 5 moves to the bottom of the lifting plate 9. At this time, the inverter on the first duplex table 4 can be removed while testing, and then replaced with the inverter that needs to be tested later, so as to achieve non-conflict between loading and unloading and testing, and improve the testing efficiency.

[0025] In a further preferred embodiment of the present invention, Figure 1 and Figure 4 As shown, the first duplex platform 4 and the second duplex platform 5 are slidably connected to the base 1 via sliders and slide grooves, and the cross section of the inverter limiting hole 6 is the same as the cross section of the inverter housing.

[0026] In this embodiment, the sliding connection can ensure the stability of the movement of the first duplex platform 4 and the second duplex platform 5 on the base 1, and the inverter limiting hole 6 can limit the inverter to prevent the inverter from shifting in the test position.

[0027] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0028] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0029] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0030] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A frequency converter double-station test device, characterized in that: include: Base (1); A motor (2) fixed to the center of the outer wall of the base (1) by means of bolts; A ball screw (3) fixed to the output end of the motor (2); A first double-station platform (4) fixed to a nut seat on the ball screw (3) via a nut; A second duplex platform (5) fixed to the outer side wall of the first duplex platform (4) by means of bolts; Two frequency converter limiting holes (6) are symmetrically arranged on the top of the first double-station platform (4) and the second double-station platform (5); A fixing plate (7) fixed to the outer wall of the base (1) by bolts; An electric push rod (8) fixed to the top of the fixing plate (7) by bolts; A lifting plate (9) fixed to the output end of the electric push rod (8); A rotating cylinder (10) fixed at the top center of the lifting plate (9) by bolts; A rotating disk (11) fixed to the output end of the rotating cylinder (10); A digital multimeter probe (12) and a power plug (13) embedded in the bottom of the rotating disk (11), wherein the digital multimeter probe (12) is located on one side of the power plug (13); A digital multimeter (14), a display screen (15) and a controller (16) are fixed to the top of the fixing plate (7) by bolts, wherein the digital multimeter (14) and the display screen (15) are both located on one side of the controller (16), and the digital multimeter (14) is located on one side of the display screen (15).

2. A frequency converter double-station test device as claimed in claim 1, characterized in that: The first double-station platform (4) and the second double-station platform (5) are slidably connected to the base (1) via a slide block and a slide groove.

3. A frequency converter dual-station test device as claimed in claim 1, characterized in that: The cross section of the inverter limiting hole (6) is the same as the cross section of the inverter housing.

4. A frequency converter double-station test device as claimed in claim 1, characterized in that: A total of four electric push rods (8) are provided, and the four electric push rods (8) are symmetrically arranged in groups of two on the top of the fixing plate (7), and the cross section of the fixing plate (7) is an L-shaped structure.

5. A frequency converter dual-station test device as claimed in claim 1, characterized in that: The rotation angle of the output end of the rotary cylinder (10) is 0-180 degrees.

6. A frequency converter double-station test device as claimed in claim 1, characterized in that: The lifting plate (9) and the rotating plate (11) are slidably connected.

7. A frequency converter dual-station testing device as claimed in claim 1, characterized in that: The motor (2), the electric push rod (8), the rotary cylinder (10) and the display screen (15) are all electrically connected to the controller (16).

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