Frequency converter test platform convenient to move

Abstract

The utility model relates to the technical field of frequency converter test platforms, in particular to a frequency converter test platform convenient to move, which comprises a base, a damping platform and a test platform, four universal wheels are symmetrically arranged at the lower end of the base and are in threaded connection with four corners of the base, guide ports are symmetrically arranged on the base, and the damping platform is arranged on the base. The number of the guide openings is six, supporting columns are slidably connected to the inner sides of the guide openings, and damping tables are connected to the upper ends of the supporting columns. The hydraulic cylinder stretches to drive the damping table to move up and down, and when the test platform needs to be moved, the hydraulic cylinder stretches to drive the supporting columns to move upwards along the guide ports to be separated from the ground, so that the universal wheels are downwards supported on the ground, and the universal wheels roll on the ground to facilitate movement of the test platform; when the transfer test platform jolts or vibrates in the test process, the square protrusions move up and down along the square buffer grooves, and through the arrangement of the damping shock absorbers, buffering can be achieved during vibration or jolting.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency converter test platforms, in particular to a frequency converter test platform which is easy to move. Background Art

[0002] The frequency converter is an electric power control device that applies frequency conversion technology and microelectronics technology to control the AC motor by changing the working power frequency of the motor. The frequency converter is mainly composed of rectification, filtering, inversion, braking unit, drive unit, detection unit, microprocessor unit, etc. The frequency converter adjusts the output power voltage and frequency by the opening and closing of the internal IGBT, 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 in production applications to determine whether it is qualified. The test method of the inverter includes using a tester to connect the positive and negative power supply interfaces, three-phase AC output terminals and optical fiber interfaces on the tester to the positive and negative busbars of the inverter through connecting lines, and connect the three-phase AC output terminals and the optical fiber interface of the Aint board. During the test, the output voltage is continuously increased and a drive signal is provided at the same time. If the AC output waveform of the inverter collected by the tester is a normal sine wave, then the inverter is fault-free. If the waveform is distorted, it indicates a fault.

[0004] The existing inverter test platform has a bulky structure and is inconvenient to move when in use; it lacks a corresponding shock-absorbing mechanism during transportation and is easily damaged by bumps.

[0005] To this end, we propose a mobile inverter testing platform to solve the above-mentioned problems. Utility Model Content

[0006] The utility model aims to solve the above-mentioned shortcomings in the prior art and proposes a frequency converter test platform which is easy to move.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A frequency converter test platform that is easy to move is designed, including a base, a shock absorbing platform and a test platform. Universal wheels are symmetrically installed on the lower end of the base. The number of the universal wheels is 4 and they are threaded at the four corners of the base. Guide openings are symmetrically arranged on the base. The number of the guide openings is 6 and the inner sides of the guide openings are slidably connected to support columns. The upper ends of the support columns are connected to the shock absorbing platform, and the inner side of the shock absorbing platform is slidably connected to the test platform.

[0009] Furthermore, a square mounting groove is provided at the center position of the upper end surface of the base, and a hydraulic cylinder is symmetrically fixed to the inner side of the square mounting groove by bolts. The telescopic end of the hydraulic cylinder is fixedly connected to the lower end surface of the shock absorbing platform by bolts. The number of the hydraulic cylinders is 2. When the test platform needs to be moved, the extension of the hydraulic cylinder can drive the support column off the ground so that the universal wheel supports the ground for easy movement.

[0010] Furthermore, a square buffer groove is arranged on the shock absorbing platform, and mounting openings are symmetrically arranged on the inner side of the square buffer groove, and the number of the mounting openings is 8.

[0011] Furthermore, a square protrusion is provided on the lower end surface of the test platform, and the square protrusion is slidably connected to the inner side of the square buffer groove.

[0012] Furthermore, a damping shock absorber is fixed to the inner side of the installation port by bolts, and the upper end of the damping shock absorber is fixedly connected to the lower end surface of the test platform by bolts. Through the setting of the damping shock absorber, it can provide buffering when the test platform vibrates or bumps along the shock absorbing platform.

[0013] Furthermore, the base is symmetrically provided with reserved grooves, the number of which is 8. The reserved grooves are located directly below the mounting opening and have an inner diameter not less than that of the damping shock absorber.

[0014] Furthermore, the retraction stroke of the hydraulic cylinder is not less than the distance between the support column and the ground.

[0015] The utility model proposes a frequency converter test platform which is easy to move, and its beneficial effects are as follows: the extension of the hydraulic cylinder can drive the shock-absorbing platform to move up and down. When the test platform needs to be moved, the extension of the hydraulic cylinder can drive the supporting column to move upward along the guide opening and away from the ground, so that the universal wheels support the ground downward, and the universal wheels roll on the ground to facilitate the movement of the test platform; when the test platform is bumped during transfer or vibrates during testing, the square protrusion moves up and down along the square buffer groove, and the setting of the damping shock absorber can provide buffering during vibration or bumping. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the overall structure of the utility model;

[0017] Figure 2 The overall structural section of the utility model Figure 1 ;

[0018] Figure 3 The overall structural section of the utility model Figure 2 ;

[0019] Figure 4 It is a side view of the overall structure of the utility model;

[0020] Figure 5 This is a top view of the base of the utility model;

[0021] In the figure: 1. base; 11. square mounting groove; 12. hydraulic cylinder; 13. reserved groove; 14. universal wheel; 15. guide port; 2. shock absorbing platform; 21. support column; 22. square buffer groove; 23. mounting port; 24. damping shock absorber; 3. test platform; 31. square protrusion. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-5 , a frequency converter test platform that is easy to move, includes a base 1, a shock absorbing platform 2 and a test platform 3, the lower end of the base 1 is symmetrically installed with universal wheels 14, the number of the universal wheels 14 is 4, and the universal wheels 14 are threadedly connected to the four corners of the base 1, and the universal wheels 14 are threadedly connected to the lower end surface of the base 1 for easy installation, and the universal wheels 14 support the ground to facilitate the movement of the base 1, and the base 1 is symmetrically provided with guide openings 15, which play a role in guiding support columns 21, the number of the guide openings 15 is 6, and the inner side of the guide openings 15 is slidably connected with support columns 21, and the ground is supported downward by the support columns 21 instead of the universal wheels 14 to support the ground, which can increase the stability of the test during use, and the upper end of the support column 21 is connected with a shock absorbing platform 2, and the up and down movement of the shock absorbing platform 2 can drive the support column 21 to move downward along the guide opening 15, and the inner side of the shock absorbing platform 2 is slidably connected with the test platform 3, and the test platform 3 can move up and down along the shock absorbing platform 2 when vibrating.

[0024] In detail, a square mounting groove 11 is provided at the center position of the upper end surface of the base 1, and the square mounting groove 11 is used to install the hydraulic cylinder 12. The hydraulic cylinder 12 is symmetrically fixed to the inner side of the square mounting groove 11 by bolts, and the telescopic end of the hydraulic cylinder 12 is fixedly connected to the lower end surface of the shock-absorbing platform 2 by bolts. The telescopic end of the hydraulic cylinder 12 can drive the shock-absorbing platform 2 to move up and down. When the test platform 3 needs to be moved, the extension of the hydraulic cylinder 12 can drive the support column 21 to leave the ground so that the universal wheel 14 supports the ground for easy movement. When in use, the contraction of the hydraulic cylinder 12 can drive the support column 21 to move downward along the guide port 15 to support the ground so that the universal wheel 14 leaves the ground and increases the stability of the connection with the ground. The number of the hydraulic cylinders 12 is 2.

[0025] Furthermore, a square buffer groove 22 is provided on the shock absorbing platform 2, and the square buffer groove 22 is provided to guide the test platform 3 so that the test platform 3 moves up and down along the square buffer groove 22 during vibration. The inner side of the square buffer groove 22 is symmetrically provided with installation openings 23, and the installation openings 23 are used to install the damping shock absorber 24. The number of the installation openings 23 is 8.

[0026] Furthermore, a square protrusion 31 is provided on the lower end surface of the test platform 3 , and the square protrusion 31 is used to guide the test platform 3 to slide inside the square buffer groove 22 , and the square protrusion 31 is slidably connected to the inner side of the square buffer groove 22 .

[0027] In more detail, a damping shock absorber 24 is fixed to the inner side of the installation port 23 by bolts. The damping shock absorber 24 provides buffering and shock absorption when the test platform 3 vibrates and bumps along the square buffer groove 22. The upper end of the damping shock absorber 24 is fixedly connected to the lower end surface of the test platform 3 by bolts.

[0028] In general, the base 1 is symmetrically provided with reserved grooves 13, which are reserved for the damping shock absorbers 24. The number of the reserved grooves 13 is 8. The reserved grooves 13 are located directly below the mounting opening 23 and have an inner diameter not less than the damping shock absorber 24. When the hydraulic cylinder 12 contracts, the shock absorbing platform 2 moves downward and approaches the base 1, and the damping shock absorber 24 moves to the inner side of the reserved groove 13.

[0029] Finally, the retraction stroke of the hydraulic cylinder 12 is not less than the distance between the support column 21 and the ground. The setting of the retraction stroke of the hydraulic cylinder 12 is not less than the distance between the support column 21 and the ground can support the ground through the support column 21 to lift the universal wheel 14 when the hydraulic cylinder 12 is retracted.

[0030] Working mode: The hydraulic cylinder 12 can be extended and retracted to drive the shock-absorbing platform 2 to move up and down. When the test platform 3 needs to be moved, the hydraulic cylinder 12 can extend to drive the support column 21 to move upward along the guide port 15 and away from the ground, so that the universal wheel 14 supports the ground downward, and the universal wheel 14 rolls on the ground to facilitate the movement of the test platform 3. When in use, the hydraulic cylinder 12 can be retracted to drive the support column 21 to move downward along the guide port 15 to support the ground, so that the universal wheel 14 is away from the ground and supported by 6 support columns 21 to increase the stability of the connection with the ground.

[0031] When the test platform 3 is bumped during transfer or vibrates during testing, because the test platform 3 is slidably arranged on the inner side of the square buffer groove 22 through the square protrusion 31, when vibration or bumping occurs, the square protrusion 31 moves up and down along the square buffer groove 22, and the damping shock absorber 24 is set to provide buffering during vibration or bumping.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A portable inverter test platform, comprising a base (1), a vibration-absorbing platform (2) and a test platform (3). Features: The lower end of the base (1) is symmetrically provided with universal wheels (14), the number of which is four and which are threadedly connected to the four corners of the base (1), the base (1) is symmetrically provided with guide openings (15), the number of which is six and the inner sides of the guide openings (15) are slidably connected to support columns (21), the upper ends of the support columns (21) are connected to a shock absorbing platform (2), and the inner side of the shock absorbing platform (2) is slidably connected to a test platform (3).

2. A portable inverter test platform according to claim 1, Features: A square mounting groove (11) is provided at the center of the upper end surface of the base (1), a hydraulic cylinder (12) is symmetrically fixed to the inner side of the square mounting groove (11) by bolts, the telescopic end of the hydraulic cylinder (12) is fixedly connected to the lower end surface of the shock absorbing platform (2) by bolts, and the number of the hydraulic cylinders (12) is two.

3. The portable inverter test platform according to claim 1, Features: The shock absorbing platform (2) is provided with a square buffer groove (22), the inner side of the square buffer groove (22) is symmetrically provided with mounting openings (23), and the number of the mounting openings (23) is 8.

4. The portable inverter test platform according to claim 1, Features: The lower end surface of the test platform (3) is provided with a square protrusion (31), and the square protrusion (31) is slidably connected to the inner side of the square buffer groove (22).

5. The portable inverter test platform according to claim 3, Features: A damping shock absorber (24) is fixed to the inner side of the installation opening (23) by means of bolts, and the upper end of the damping shock absorber (24) is fixedly connected to the lower end surface of the test platform (3) by means of bolts.

6. The portable inverter test platform according to claim 1, Features: The base (1) is symmetrically provided with reserved grooves (13), the number of the reserved grooves (13) being 8, the reserved grooves (13) being located directly below the mounting opening (23) and having an inner diameter not less than that of the damping shock absorber (24).

7. The portable inverter testing platform according to claim 2, Features: The retraction stroke of the hydraulic cylinder (12) is not less than the distance between the support column (21) and the ground.

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