Vibration resistance detection device for DC / AC converter

Abstract

The utility model discloses a DC / AC converter vibration resistance detection device, and relates to the technical field of vibration resistance detection. By changing the position of the adjusting column in the movable seat, the included angle between the movable plate and the movable seat and the included angle between the movable plate and the clamping seat can be changed under the action of the adjusting column and the connecting column, so that the distance between the clamping seats can be changed, the purpose of clamping the DC / AC converters with different widths can be achieved, stuffing does not need to be added, and the clamping efficiency is improved. The condition of asynchronization under different amplitude conditions is avoided, so that the detection effect can be ensured; after the driving machine is started, the driving wheel can be driven to do circular motion, the lower end of the vibration table always abuts against the outer wall of the driving wheel under the action of gravity and the cooperation of the supporting spring and the movable column, the purpose of vibration resistance detection can be achieved, and the amplitude can be adjusted by changing the running frequency and the rotating speed of the driving machine. The purpose of detecting the DC / AC converter under different amplitudes is achieved through the sensor.

Description

Technical Field

[0001] This utility model relates to the field of vibration resistance testing technology, specifically to a vibration resistance testing device for a DC / AC converter. Background Technology

[0002] A DC / AC converter, also known as an inverter, is a device that converts direct current (DC) power into alternating current (AC) power. It achieves this conversion by using power electronic devices (such as IGBTs and MOSFETs) for switching modulation, controlling the on and off states of these devices.

[0003] Vibration resistance testing can detect problems before they occur, giving maintenance teams sufficient time to take action and avoid serious failures and downtime. Through predictive maintenance, vibration testing helps improve equipment reliability and availability, ensuring the continuity of the production process. However, vibration resistance testing often encounters mismatches in product fixation due to the uniform size of the fixtures and the varied dimensions of the batteries. Traditional fixtures use wooden blocks, molds, or other solid objects to clamp the batteries, but these objects, batteries, and fixtures can become asynchronous under high-frequency, high-amplitude vibration conditions. This asynchrony can cause the three components to separate during vibration testing, ultimately forcing the test to be terminated. It also compromises the safety of the products and personnel during the testing process. To address this, we propose a vibration resistance testing device for DC / AC converters. Utility Model Content

[0004] The purpose of this invention is to provide a vibration resistance testing device for DC / AC converters to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] A vibration resistance testing device for a DC / AC converter, comprising:

[0007] Four clamping mechanisms are arranged symmetrically in a circle. Each clamping mechanism includes a clamping seat. A movable plate is movably connected to the inner side of the clamping seat via a connecting column. A movable seat is movably connected to the outer side of the movable plate via an adjusting column. Connecting seats are installed on both sides of the movable seat. A support rod is installed inside each connecting seat. An adjusting component is movably installed on the circumferential surface of the support rod, and the adjusting component is located at the lower end of the connecting seat. Fastening nuts can be detachably installed on the circumferential surfaces of both ends of the connecting column and the adjusting column.

[0008] A vibration mechanism is provided below the clamping mechanism. The vibration mechanism includes a vibration table. Two symmetrically arranged drive wheels are installed below the vibration table. A drive motor is arranged between the two drive wheels. A fixed seat is installed on the outer wall of the drive motor. Symmetrically arranged movable columns are installed on both sides of the lower end of the vibration table. A support spring is installed at the lower end of each movable column. A limit cylinder is provided on the outer side of the support spring.

[0009] A base is provided below the vibration mechanism.

[0010] Furthermore, the clamping seat has an installation groove on its outer side and an movable groove on its inner side. The two sides of the moving plate are inserted into the installation groove and the movable groove. The movable groove has a limiting groove with arc-shaped ends on its front and back sides. The adjusting column is movably connected to the movable seat through the limiting groove.

[0011] Furthermore, a rectangular through slot is provided inside the movable plate, and the width of the rectangular through slot is adapted to the width of the connecting seat.

[0012] Furthermore, the lower end of the connecting seat is provided with a countersunk hole, the upper end of the adjusting member is inserted into the countersunk hole, and the circumferential surface of the support rod is provided with an external thread, the interior of the adjusting member is provided with an internal thread, and the support rod and the adjusting member are connected by threads.

[0013] Furthermore, both ends of the connecting column and the adjusting column are provided with threaded connection portions, and the connecting column and the adjusting column are connected to the fastening nut by threads.

[0014] Furthermore, the upper end of the vibration table is provided with a mounting hole, and the lower end of the support rod is inserted into the mounting hole.

[0015] Furthermore, the drive wheel is an eccentric wheel, and a through hole is provided inside the drive wheel. The drive shaft of the drive machine is interference-fitted with the through hole, and support plates are provided on the outer sides of the drive shafts at both ends of the drive machine.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. This utility model changes the position of the adjusting column inside the movable seat. Under the action of the adjusting column and the connecting column, the angle between the moving plate and the movable seat and the clamping seat can be changed, thereby changing the spacing of the clamping seats. This allows for the clamping of DC / AC converters of different widths without the need for filling materials, and avoids asynchrony under different amplitude conditions, thus ensuring the detection effect. By changing the height position of the adjusting component on the circumferential surface of the support rod, the usable height of the connecting seat and the movable seat can be changed. This operation not only increases the usable range of the components inside the movable seat, but also achieves the clamping purpose of DC / AC converters of different heights.

[0018] 2. After the drive motor is started, this utility model can drive the drive wheel to perform circular motion. Under the action of gravity and the cooperation of the support spring and the movable column, the lower end of the vibration table is always in contact with the outer wall of the drive wheel, which can achieve the purpose of vibration resistance testing. By changing the operating frequency and speed of the drive motor, the amplitude can be adjusted. The DC / AC converter under different amplitudes can be detected by the sensor. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0020] Figure 2 This is a front sectional view of the present invention;

[0021] Figure 3 This is a three-dimensional schematic diagram of the clamping mechanism in this utility model;

[0022] Figure 4 This is a three-dimensional schematic diagram of the vibration mechanism in this utility model.

[0023] Reference numerals in the attached drawings: 1. Clamping mechanism; 11. Clamping seat; 12. Connecting column; 13. Moving plate; 14. Adjusting column; 15. Movable seat; 16. Connecting seat; 17. Support rod; 18. Adjusting component; 19. Fastening nut; 2. Vibration mechanism; 21. Vibration table; 22. Drive wheel; 23. Drive motor; 24. Fixed seat; 25. Support plate; 26. Movable column; 27. Support spring; 28. Limiting cylinder; 3. Base. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0025] Please see Figure 1 - Figure 4 This utility model provides a vibration resistance testing device for a DC / AC converter, comprising:

[0026] Four clamping mechanisms 1 are arranged symmetrically in a circle. Each clamping mechanism 1 includes a clamping seat 11. A movable plate 13 is movably connected to the outside of the clamping seat 11 through a connecting column 12. A movable seat 15 is movably connected to the outside of the movable plate 13 through an adjusting column 14. Connecting seats 16 are installed on both sides of the movable seat 15. A support rod 17 is installed inside each connecting seat 16. An adjusting component 18 is movably installed on the circumferential surface of the support rod 17 and is located at the lower end of the connecting seat 16. Fastening nuts 19 can be detachably installed on the circumferential surfaces of both ends of the connecting column 12 and the adjusting column 14.

[0027] With the cooperation of the clamping seat 11, the DC / AC converter can be clamped. With the action of the connecting column 12, the connection stability between the clamping seat 11 and the inner side of the moving plate 13 can be ensured. With the action of the adjusting column 14, the connection stability between the movable seat 15 and the outer side of the moving plate 13 can be ensured. With the cooperation of the adjusting member 18 and the support rod 17, the connecting seat 16 can be supported. With the action of the connecting seat 16, the movable seat 15 can be supported. With the action of the fastening nut 19, the installation stability of the connecting column 12 and the adjusting column 14 can be ensured.

[0028] By changing the position of the adjusting column 14 inside the movable seat 15, the angle between the moving plate 13 and the movable seat 15 and the clamping seat 11 can be changed under the action of the adjusting column 14 and the connecting column 12. This changes the spacing of the clamping seat 11, thus achieving the clamping purpose of DC / AC converters of different widths. No filler material is needed, and asynchrony under different amplitude conditions will not occur, thus ensuring the detection effect. By changing the height position of the adjusting member 18 on the circumferential surface of the support rod 17, the usable height of the connecting seat 16 and the movable seat 15 can be changed. This operation can not only increase the usable range of the components inside the movable seat 15, but also achieve the clamping purpose of DC / AC converters of different heights.

[0029] A vibration mechanism 2 is provided below the clamping mechanism 1. The vibration mechanism 2 includes a vibration table 21. Two symmetrically arranged drive wheels 22 are installed below the vibration table 21. A drive motor 23 is arranged between the two drive wheels 22. A fixed seat 24 is installed on the outer wall of the drive motor 23. Symmetrically arranged movable columns 26 are installed on both sides of the lower end of the vibration table 21. A support spring 27 is installed at the lower end of each movable column 26. A limit cylinder 28 is provided on the outer side of the support spring 27.

[0030] The vibration table 21 supports the clamping mechanism 1 and its internal DC / AC converter. Sensors are installed inside the vibration table 21, and different sensor types are selected based on different application requirements. For high-temperature, high-pressure, or strong electromagnetic field environments, fiber Bragg grating sensors are used; for scenarios requiring real-time monitoring and low-cost deployment, MEMS accelerometers are used. These sensors are used to detect the DC / AC converter under different amplitudes.

[0031] The fixed base 24 supports the drive motor 23, and the drive motor 23 ensures the installation stability of the drive wheel 22. The support spring 27 supports the movable column 26, and the limiting cylinder 28 protects the support spring 27 and the movable column 26. The drive wheel 22 and the movable column 26 work together to support the vibration table 21. The drive motor 23 has a built-in frequency converter, which changes the operating frequency and speed of the drive motor 23, thereby adjusting the amplitude.

[0032] After the drive motor 23 is started, it can drive the drive wheel 22 to perform circular motion. Under the action of gravity and the cooperation of the support spring 27 and the movable column 26, the lower end of the vibration table 21 is always in contact with the outer wall of the drive wheel 22, which can achieve the purpose of vibration resistance testing. By changing the operating frequency and speed of the drive motor 23, the amplitude can be adjusted, and the DC / AC converter under different amplitudes can be tested by the sensor.

[0033] A base 3 is provided below the vibration mechanism 2.

[0034] The base 3 provides support for the vibration mechanism 2, thus ensuring its effectiveness.

[0035] In this embodiment, preferably, the inner side of the clamping seat 11 has an installation groove, the inner side of the movable seat 15 has a movable groove, the two sides of the movable plate 13 are inserted into the installation groove and the movable groove, and the front and back of the movable groove have limiting grooves with arc-shaped mechanisms at both ends. The adjusting column 14 is movably connected to the movable seat 15 through the limiting groove. With the cooperation of the connecting column 12 and the installation groove, and the adjusting column 14 and the movable groove, the installation stability of both ends of the movable plate 13 can be guaranteed, and with the cooperation of the movable groove and the limiting groove, the movement stability of the adjusting column 14 and the outer side of the movable plate 13 can be guaranteed.

[0036] In this embodiment, preferably, a rectangular through groove is provided inside the movable plate 13, and the width of the rectangular through groove is adapted to the width of the connecting seat 16; the rectangular through groove will not cause motion interference to the movement of the inner connecting seat 16, that is, the movement stability of the inner connecting seat 16 can be guaranteed.

[0037] In this embodiment, preferably, the lower end of the connecting seat 16 is provided with a countersunk hole, the upper end of the adjusting member 18 is inserted into the countersunk hole, and the circumferential surface of the support rod 17 is provided with an external thread, the interior of the adjusting member 18 is provided with an internal thread, and the support rod 17 and the adjusting member 18 are connected by threads; the countersunk hole can ensure the installation stability of the adjusting member 18, and the adjusting member 18 can achieve the supporting purpose of the connecting seat 16.

[0038] In this embodiment, preferably, the circumferential surfaces at both ends of the connecting column 12 and the adjusting column 14 are provided with threaded connection portions, and the connecting column 12 and the adjusting column 14 are connected to the fastening nut 19 by threads; the threaded connection can ensure the connection stability between the connecting column 12 and the adjusting column 14 and the fastening nut 19.

[0039] In this embodiment, preferably, the upper end of the vibration table 21 is provided with a mounting hole, and the lower end of the support rod 17 is inserted into the mounting hole; the mounting hole can ensure the installation stability of the lower end of the support rod 17.

[0040] In this embodiment, preferably, the drive wheel 22 is an eccentric wheel, and the drive wheel 22 has a through hole inside. The drive shaft of the drive machine 23 is interference-fitted with the through hole, and support plates 25 are provided on the outer sides of the drive shafts at both ends of the drive machine 23. The through hole can ensure the connection stability between the drive shaft and the drive wheel 22, and the support plate 25 can further improve the stability of the drive shaft.

[0041] The working principle and usage of this utility model are as follows: When using this device, by changing the position of the adjusting column 14 inside the movable seat 15, the angle between the moving plate 13 and the movable seat 15 and clamping seat 11 can be changed under the action of the adjusting column 14 and the connecting column 12. This changes the spacing of the clamping seat 11, thus achieving the clamping purpose for DC / AC converters of different widths. No filler material is needed, and asynchrony under different amplitude conditions will not occur, ensuring the detection effect. By changing the height position of the adjusting member 18 on the circumferential surface of the support rod 17, the working height of the connecting seat 16 and the movable seat 15 can be changed. This operation can improve... The movable base 15 allows for the use of components within its range, enabling the clamping of DC / AC converters at different heights. Upon starting the drive motor 23, it drives the drive wheel 22 in a circular motion. Under the influence of gravity and the cooperation of the support spring 27 and the movable column 26, the lower end of the vibration table 21 remains in contact with the outer wall of the drive wheel 22, thus achieving vibration resistance testing. By changing the operating frequency and speed of the drive motor 23, the amplitude can be adjusted, allowing for DC / AC converter testing under different amplitudes via sensors. The base 3 provides support for the vibration mechanism 2, ensuring its effectiveness.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A DC / AC inverter vibration resistance testing device, characterized by comprising: include: Four clamping mechanisms (1) are arranged symmetrically in a circle. Each clamping mechanism (1) includes a clamping seat (11). The outer side of the clamping seat (11) is movably connected to a moving plate (13) via a connecting column (12). The outer side of the moving plate (13) is movably connected to a movable seat (15) via an adjusting column (14). Connecting seats (16) are installed on both sides of the movable seat (15). A support rod (17) is installed inside each connecting seat (16). An adjusting member (18) is movably installed on the circumferential surface of the support rod (17). The adjusting member (18) is located at the lower end of the connecting seat (16). Fastening nuts (19) can be detachably installed on the circumferential surfaces of both ends of the connecting column (12) and the adjusting column (14). A vibration mechanism (2) is provided below the clamping mechanism (1). The vibration mechanism (2) includes a vibration table (21). Two symmetrically arranged drive wheels (22) are installed below the vibration table (21). A drive motor (23) is provided between the two drive wheels (22). A fixed seat (24) is installed on the outer wall of the drive motor (23). Symmetrically arranged movable columns (26) are installed on both sides of the lower end of the vibration table (21). A support spring (27) is installed at the lower end of each movable column (26). A limit cylinder (28) is provided on the outer side of the support spring (27). A base (3) is provided below the vibration mechanism (2).

2. The vibration-resistant detection device for a DC / AC converter according to claim 1, characterized in that: The clamping seat (11) has an installation groove on its outer side and an activity groove on its inner side. The movable plate (13) is inserted into the installation groove and the activity groove on both sides. The front and back of the activity groove have a limiting groove with arc-shaped mechanisms at both ends. The adjusting column (14) is movably connected to the movable seat (15) through the limiting groove.

3. The vibration-resistant detection device for a DC / AC converter according to claim 1, characterized in that: The movable plate (13) has a rectangular through groove inside, and the width of the rectangular through groove is adapted to the width of the connecting seat (16).

4. The vibration-resistant detection device for a DC / AC converter according to claim 1, characterized in that: The lower end of the connecting seat (16) is provided with a countersunk hole, the upper end of the adjusting member (18) is inserted into the countersunk hole, and the circumferential surface of the support rod (17) is provided with an external thread, the interior of the adjusting member (18) is provided with an internal thread, and the support rod (17) and the adjusting member (18) are connected by threads.

5. The vibration-resistant detection device for a DC / AC converter according to claim 1, characterized in that: Both ends of the connecting column (12) and the adjusting column (14) are provided with threaded connection parts, and the connecting column (12) and the adjusting column (14) are connected to the fastening nut (19) by threads.

6. The vibration-resistant detection device for a DC / AC converter according to claim 1, characterized in that: The upper end of the vibration table (21) is provided with an installation hole, and the lower end of the support rod (17) is inserted into the installation hole.

7. The vibration-resistant detection device for a DC / AC converter according to claim 1, characterized in that: The drive wheel (22) is an eccentric wheel, and the drive wheel (22) has a through hole inside. The drive shaft of the drive machine (23) is interference-fitted with the through hole. Support plates (25) are provided on the outer sides of the drive shafts at both ends of the drive machine (23).

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