A testing device for maintenance of a doubly-fed generator

Abstract

The utility model discloses a kind of testing device based on double-fed generator maintenance, belong to double-fed generator field, including workbench, second limit block and test bench, the bottom of the workbench is fixedly connected with four support foot pads, the both sides surface of the workbench is fixedly connected with heat dissipation net;The utility model, by setting inner thread rod and outer thread rod transmission structure, when this testing device operates, drive motor drives worm gear transmission by driving, cooperate inner thread rod with outer thread rod and convert rotary motion into axial linear motion, realize the lifting of test bench, to flexibly adjust the height of the motor to be measured, improve the butt joint angle of the motor to be measured for with detection piece connecting component, it is convenient to butt joint with detection piece;Test bench is rotated by the connecting structure of rotary limit ring, balance plate and support plate, to facilitate adjusting the motor to be measured position to butt joint detection piece, effectively solve the problem that the motor to be measured cannot be flexibly butt joint or connected.

Description

Technical Field

[0001] This utility model belongs to the field of doubly-fed generators, and specifically relates to a testing device for the maintenance of doubly-fed generators. Background Technology

[0002] A doubly-fed generator is an AC motor device mainly used for wind power generation. Its core feature is that both the stator and rotor can feed power to the grid, achieving variable-speed constant-frequency power generation. It adjusts the excitation current by connecting the rotor winding to a frequency converter, adapting to efficient energy conversion under different wind speeds, and is widely used in the wind power field.

[0003] Existing doubly-fed generator repair and testing devices are fixed on the workbench, making it difficult to flexibly adjust the height and position of the motor under test. This results in inconvenience in docking or connecting the motor to the test components, affecting the testing of various data of the motor under test. Therefore, a testing device based on doubly-fed generator repair is needed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a testing device for the maintenance of a doubly-fed generator, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a testing device for the maintenance of a doubly-fed generator, comprising a workbench, a second limiting block, and a testing platform. Four supporting feet are fixedly connected to the bottom of the workbench. Heat dissipation meshes are fixedly connected to both sides of the workbench. Two sealed drawers are fixedly connected to the front of the workbench. An internal slot is provided on the top of the workbench. A testing machine is fixedly connected to the top of the workbench. A display screen is fixedly connected to the front of the testing machine. Several testing component interfaces are fixedly connected to the front of the testing machine. Four control buttons are fixedly connected to the front of the testing machine. A support base is fixedly connected to the bottom of the internal slot. A drive motor is fixedly connected to the top of the support base. A worm gear is fixedly connected to the output end of the drive motor, and the worm gear is surface-engaged with... The test bench has a worm gear with a limit rod fixedly connected to its bottom and an internally threaded rod fixedly connected to its top. An externally threaded rod is connected to the internal thread of the internally threaded rod. A protective plate is fixedly connected to the inner wall of the built-in groove. Four trapezoidal sliding grooves are formed on the top of the protective plate. Trapezoidal sliders are slidably connected to the inner walls of the four trapezoidal sliding grooves. Springs and dampers are fixedly connected to the inner walls of the four trapezoidal sliding grooves. First limit blocks are fixedly connected to the tops of the four trapezoidal sliders. Support plates are rotatably connected to the interiors of the four first limit blocks. Balance plates are fixedly connected to the tops of the four second limit blocks. A rotating limit ring is rotatably connected to the interior of the test bench. Four hydraulic clamping components are fixedly connected to the surface of the test bench.

[0006] By setting up the above structure, when the testing device is running, the drive motor drives the worm gear transmission, which, in conjunction with the internal and external threaded rods, converts the rotational motion into axial linear motion, realizing the lifting and lowering of the test platform. This allows for flexible adjustment of the height of the motor under test, increasing the docking angle between the motor under test and the component connecting to the test piece, facilitating docking with the test piece. The test platform achieves rotation through the connection structure of the rotation limit ring, balance plate, and support plate, making it easy to adjust the position of the motor under test to dock with the test piece, effectively solving the problem of the motor under test being unable to dock or connect flexibly.

[0007] As a preferred embodiment, the worm gear rotates inside the worktable, and the limiting rod rotates inside the worktable.

[0008] As a preferred embodiment, one end of each of the four springs is fixedly connected to one side surface of the trapezoidal slider.

[0009] As a preferred embodiment, one end of each of the four dampers is fixedly connected to one side surface of the trapezoidal slider.

[0010] As a preferred embodiment, the four support plates rotate inside the second limiting block, and the tops of the four balance plates are respectively attached to the bottom of the test platform.

[0011] As a preferred embodiment, the bottom of the rotating limiting ring is fixedly connected to the top of each of the four balance plates.

[0012] By setting trapezoidal grooves and trapezoidal sliders, the structure on the protective plate can guide the external threaded rod, limit its radial movement, and ensure smooth lifting of the test bench; the springs and dampers in the trapezoidal grooves can buffer vibrations, ensure the stability of the testing process, and extend the service life of the device; the built-in grooves provide a safe and stable environment for the test bench adjustment structure.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This invention, through the setting of an internal and external threaded rod transmission structure, allows the testing device to operate by driving a worm gear transmission via a drive motor. This, combined with the internal and external threaded rods, converts rotational motion into axial linear motion, enabling the lifting and lowering of the testing platform. This allows for flexible adjustment of the height of the motor under test, increasing the docking angle between the motor and the component being tested, facilitating docking with the component. Simultaneously, the testing platform achieves rotation through a connection structure of a rotational limiting ring, a balance plate, and a support plate, facilitating adjustment of the motor's position for docking with the component. This effectively solves the problem of the motor being unable to flexibly dock or connect.

[0014] This utility model, by setting a trapezoidal slide groove and a trapezoidal slider, provides guidance for the external threaded rod on the protective plate, restricts its radial movement, and ensures smooth lifting and lowering of the test platform; the spring and damper in the trapezoidal slide groove can buffer vibration, ensure the stability of the testing process, and extend the service life of the device; the built-in groove provides a safe and stable environment for the adjustment structure of the test platform. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the worm gear of this utility model; Figure 3 This is a partial cross-sectional structural diagram of the present invention; Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0016] In the diagram: 1. Workbench; 2. Support feet; 3. Heat dissipation mesh; 4. Sealed drawer; 5. Internal slot; 6. Testing machine; 7. Display screen; 8. Test piece interface; 9. Control button; 10. Support base; 11. Drive motor; 12. Worm gear; 13. Worm wheel; 14. Limiting rod; 15. Internal threaded rod; 16. External threaded rod; 17. Protective plate; 18. Trapezoidal slide; 19. Trapezoidal slider; 20. Spring; 21. Damper; 22. First limiting block; 23. Support plate; 24. Second limiting block; 25. Balance plate; 26. Testing table; 27. Rotary limiting ring; 28. Hydraulic clamping component. Detailed Implementation

[0017] The present invention will be further described below with reference to the embodiments.

[0018] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0019] Please see Figure 1-4This utility model provides a testing device for the maintenance of a doubly-fed generator, including a workbench 1, a second limiting block 24, and a testing platform 26. Four supporting feet 2 are fixedly connected to the bottom of the workbench 1. Heat dissipation mesh 3 is fixedly connected to both sides of the workbench 1. Two sealed drawers 4 are fixedly connected to the front of the workbench 1. An internal groove 5 is opened on the top of the workbench 1. A testing machine 6 is fixedly connected to the top of the workbench 1. A display screen 7 is fixedly connected to the front of the testing machine 6. Several testing component interfaces 8 are fixedly connected to the front of the testing machine 6. Four control buttons are fixedly connected to the front of the testing machine 6. Button 9, a support base 10 is fixedly connected to the bottom of the built-in groove 5, a drive motor 11 is fixedly connected to the top of the support base 10, a worm gear 12 is fixedly connected to the output end of the drive motor 11, a worm wheel 13 is meshed with the surface of the worm gear 12, a limit rod 14 is fixedly connected to the bottom of the worm wheel 13, an internal thread rod 15 is fixedly connected to the top of the worm wheel 13, an external thread rod 16 is connected to the internal thread of the internal thread rod 15, a protective plate 17 is fixedly connected to the inner wall of the built-in groove 5, and four trapezoidal slide grooves 18 are opened on the top of the protective plate 17. The inner walls of the four trapezoidal slide grooves 18 are slidably connected to trapezoidal slide grooves 16 respectively. The test bench 26 has a sliding block 19, and four trapezoidal grooves 18. Springs 20 are fixedly connected to the inner walls of the four trapezoidal grooves 18, and dampers 21 are fixedly connected to the inner walls of the four trapezoidal grooves 18. First limiting blocks 22 are fixedly connected to the tops of the four trapezoidal sliding blocks 19. Support plates 23 are rotatably connected inside the four first limiting blocks 22. Balance plates 25 are fixedly connected to the tops of the four second limiting blocks 24. A rotating limiting ring 27 is rotatably connected inside the test bench 26. Four hydraulic clamping components 28 are fixedly connected to the surface of the test bench 26. The transmission is achieved through internal threaded rods 15 and external threaded rods 16. The test device features a dynamic structure. During operation, the drive motor 11 drives the worm gear 13 and worm 12 for transmission. In conjunction with the internal threaded rod 15 and external threaded rod 16, the rotational motion is converted into axial linear motion, enabling the lifting and lowering of the test platform 26. This allows for flexible adjustment of the height of the motor under test, increasing the docking angle between the motor and the component being tested, thus facilitating docking with the component. The test platform 26 rotates through a connection structure of the rotation limit ring 27, balance plate 25, and support plate 23, facilitating the adjustment of the motor's position for docking with the component and effectively solving the problem of the motor being unable to dock or connect flexibly.

[0020] The worm gear 12 rotates inside the worktable 1, and the limit rod 14 rotates inside the worktable 1.

[0021] One end of each of the four springs 20 is fixedly connected to one side surface of the trapezoidal slider 19.

[0022] One end of each of the four dampers 21 is fixedly connected to one side surface of the trapezoidal slider 19.

[0023] The four support plates 23 rotate inside the second limiting block 24 respectively, and the tops of the four balance plates 25 are respectively attached to the bottom of the test platform 26.

[0024] The bottom of the rotating limiting ring 27 is fixedly connected to the top of the four balance plates 25 respectively. By setting the trapezoidal slide groove 18 and the trapezoidal slider 19, this structure on the protective plate 17 can provide guidance for the external thread rod 16, limit its radial movement, and ensure that the test bench 26 rises and falls smoothly. The spring 20 and damper 21 in the trapezoidal slide groove 18 can buffer vibration, ensure the stability of the test process, and extend the service life of the device. The built-in groove 5 provides a safe and stable environment for the adjustment structure of the test bench 26.

[0025] Working principle and usage process of this utility model: When the testing device is working, the drive motor 11 drives the worm gear 12 to rotate, and the meshing worm wheel 13 rotates accordingly, driving the internal thread rod 15 fixed on the worm wheel 13 to rotate. The internal thread rod 15 is threadedly engaged with the external thread rod 16. Because the external thread rod 16 is guided and restricted by the trapezoidal slider 19 in the trapezoidal groove 18 on the protective plate 17, its rotational motion is converted into axial linear motion, thereby driving the test platform 26 at the top of the external thread rod 16 to rise and fall. At the same time, the test platform 26 is connected to the balance plate 25 through the rotation limit ring 27, and can rotate under the support of the support plate 23 to adjust the position of the motor under test. After the hydraulic clamp 28 fixes the motor, the height of the test platform 26 is controlled by the forward and reverse rotation of the drive motor 11, and the rotation adjustment is coordinated to make the motor under test and the test piece of the testing machine 6 quickly and accurately dock to complete the data test. During this period, the spring 20 and damper 21 in the trapezoidal groove 18 can buffer vibration and ensure test stability.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A testing device for maintenance of a doubly-fed generator, comprising a workbench (1), a second limiting block (24), and a testing platform (26), characterized in that: The bottom of the workbench (1) is fixedly connected with four support feet (2), the two sides of the workbench (1) are fixedly connected with heat dissipation mesh (3), the front of the workbench (1) is fixedly connected with two sealed drawers (4), the top of the workbench (1) is provided with an internal slot (5), the top of the workbench (1) is fixedly connected with a testing machine (6), the front of the testing machine (6) is fixedly connected with a display screen (7), the front of the testing machine (6) is fixedly connected with several test piece interfaces (8), the front of the testing machine (6) is fixedly connected with four control buttons (9), the bottom of the internal slot (5) is fixedly connected with a support base (10), the top of the support base (10) is fixedly connected with a drive motor (11), the output end of the drive motor (11) is fixedly connected with a worm gear (12), the surface of the worm gear (12) is meshed with a worm wheel (13), the bottom of the worm wheel (13) is fixedly connected with a limit rod (14), the top of the worm wheel (13) is fixedly connected with a limit rod (14). An internally threaded rod (15) is fixedly connected to the inner thread of the internally threaded rod (15), and an externally threaded rod (16) is connected to the inner thread of the internally threaded rod (15). A protective plate (17) is fixedly connected to the inner wall of the internal groove (5). Four trapezoidal slides (18) are opened on the top of the protective plate (17). Trapezoidal sliders (19) are slidably connected to the inner walls of the four trapezoidal slides (18). Springs (20) are fixedly connected to the inner walls of the four trapezoidal slides (18). Dampers (21) are fixedly connected to the inner walls of the four trapezoidal slides (18). First limiting blocks (22) are fixedly connected to the top of the four trapezoidal sliders (19). Support plates (23) are rotatably connected to the inside of the four first limiting blocks (22). Balance plates (25) are fixedly connected to the top of the four second limiting blocks (24). Rotary limiting rings (27) are rotatably connected to the inside of the test platform (26). Four hydraulic clamping parts (28) are fixedly connected to the surface of the test platform (26).

2. The testing device for maintenance of a doubly-fed generator according to claim 1, characterized in that: The worm gear (12) rotates inside the worktable (1), and the limiting rod (14) rotates inside the worktable (1).

3. The testing device for maintenance of a doubly-fed generator according to claim 1, characterized in that: One end of each of the four springs (20) is fixedly connected to one side surface of the trapezoidal slider (19).

4. The testing device for maintenance of a doubly-fed generator according to claim 1, characterized in that: One end of each of the four dampers (21) is fixedly connected to one side surface of the trapezoidal slider (19).

5. The testing device for maintenance of a doubly-fed generator according to claim 1, characterized in that: The four support plates (23) rotate inside the second limiting block (24) respectively, and the tops of the four balance plates (25) are respectively attached to the bottom of the test platform (26).

6. The testing device for maintenance of a doubly-fed generator according to claim 1, characterized in that: The bottom of the rotating limiting ring (27) is fixedly connected to the top of the four balance plates (25).

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