Permanent magnet motor reactance parameter testing device based on voltage integration method

Abstract

The utility model provides a permanent magnet motor reactance parameter testing device based on a voltage integration method, which comprises a test board, a vertical plate is fixed at the top of the test board through bolts, a retractable assembly is arranged at the top of the vertical plate, a hydraulic rod is fixedly mounted on the outer wall of one side of the vertical plate, and the telescopic end of the hydraulic rod is fixedly connected with two connecting lugs. The opposite sides of the two connecting lugs are rotationally connected with pulleys, a pull rope is wound around the outer wall of the rotating shaft, one end of the pull rope is fixedly connected with the rotating shaft, the other end of the pull rope is connected with a hoisting assembly, the pull rope is movably matched with the outer wall of the pulley, the winding and unwinding assembly comprises a support and a motor, the support is fixed to the top of the vertical plate through bolts, and the inner wall of the support is rotationally connected with the rotating shaft. According to the utility model, the permanent magnet motor can be hoisted and moved to the top of the testboard through the cooperation of the retractable assembly and the hydraulic rod, so that the difficulty of manual carrying is reduced, and the use convenience of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor testing, in particular to a permanent magnet motor reactance parameter testing device based on a voltage integration method. Background Art

[0002] The voltage integration method can be used in the design, fault diagnosis and performance evaluation of permanent magnet motors. It can effectively obtain the reactance parameters of permanent magnet motors and provide important data support for the control and optimization of permanent magnet motors.

[0003] After searching, the Chinese patent publication number CN220773224U discloses a motor test bench, including a support table, a storage cavity is provided on the inner side of the support table, a flip plate is rotatably connected in the storage cavity of the support table, and rotating columns are fixed on both side walls of the flip plate. The two rotating columns are rotatably connected to the support table, and the end of the left rotating column away from the flip plate extends to the outside of the support table and is connected to the flip assembly, and the end of the right rotating column away from the flip plate extends to the outside of the support table and is fixed with a connecting disk.

[0004] The above patent has the following deficiencies: it requires manual placement of the motor on a support table before testing the motor. When the support table is high, the motor is heavy and manual handling is difficult, resulting in inconvenience in use and having certain limitations.

[0005] Therefore, a device for testing the reactance parameters of permanent magnet motor based on voltage integration method is proposed. Utility Model Content

[0006] In view of this, an embodiment of the present invention hopes to provide a permanent magnet motor reactance parameter testing device based on the voltage integration method to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0007] The technical solution of the embodiment of the present utility model is achieved as follows: a permanent magnet motor reactance parameter testing device based on the voltage integration method includes a test bench, a vertical plate is fixed to the top of the test bench by bolts, a retractable assembly is provided on the top of the vertical plate, and a hydraulic rod is fixedly installed on the outer wall of one side of the vertical plate, the telescopic end of the hydraulic rod is fixedly connected to two connecting ears, the opposite sides of the two connecting ears are rotatably connected to a pulley, a pull rope is wound on the outer wall of the rotating shaft, one end of the pull rope is fixedly connected to the rotating shaft, and the other end of the pull rope is connected to the lifting assembly, and the pull rope is movably coordinated with the outer wall of the pulley.

[0008] In some embodiments, the retractable assembly includes a bracket and a motor. The bracket is fixed to the top of the vertical plate by bolts, and the inner wall of the bracket is rotatably connected to a rotating shaft.

[0009] In some embodiments, one end of the rotating shaft passes through the bracket and is fixedly connected to the output shaft of the motor through a coupling, and the motor is fixedly connected to the outer wall of the bracket.

[0010] In some embodiments, the lifting assembly includes a horizontal plate and a lifting rope, the lifting rope is movably inserted into the inner wall of the horizontal plate, both ends of the lifting rope pass through the horizontal plate, and both ends of the lifting rope are fixedly connected to a hook.

[0011] In some embodiments, the end of the pull rope is fixedly connected to a plurality of connecting ropes, and the other ends of all the connecting ropes are fixedly connected to the same horizontal plate 2.

[0012] In some embodiments, the second transverse plate is located below the first transverse plate, and two symmetrically arranged sliding rods are fixedly connected to the top of the second transverse plate, and the sliding rods are slidably fitted with the inner wall of the first transverse plate.

[0013] In some embodiments, the top of the sliding rod is fixedly connected to the limit plate, and a spring is sleeved on the outer wall of the sliding rod, and both ends of the spring are fixedly connected to the horizontal plate 1 and the limit plate respectively.

[0014] In some embodiments, all of the connecting ropes pass through the first horizontal plate, and the hanging ropes are movably fitted on the inner wall of the second horizontal plate.

[0015] The embodiment of the present invention has the following advantages due to the adoption of the above technical solution:

[0016] 1. A permanent magnet motor reactance parameter testing device based on the voltage integration method. By setting up a retractable component and a hydraulic rod, the permanent magnet motor can be hoisted and moved to the top of the test bench by using the cooperation of the two, which reduces the difficulty of manual handling and improves the convenience of use of the device.

[0017] 2. A permanent magnet motor reactance parameter testing device based on the voltage integration method is provided. By setting a horizontal plate and a lifting rope, the lifting rope can be movably inserted in the horizontal plate, so that the height of the two hooks can be flexibly adjusted according to the different heights of the permanent magnet motor lifting ears, thereby improving the flexibility and applicability of the device.

[0018] 3. A permanent magnet motor reactance parameter testing device based on the voltage integration method, which sets a second horizontal plate and uses the first and second horizontal plates to clamp and limit the lifting rope to prevent it from moving, thereby ensuring that the posture of the permanent magnet motor will not change during the lifting process and improving the lifting stability.

[0019] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is the main structural diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the retractable component structure of the utility model;

[0023] Figure 3 This is a cross-sectional view of the lifting assembly of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the hoisting assembly of the present utility model.

[0025] Reference numerals:

[0026] 1. Test bench; 2. Vertical board; 3. Retractable assembly; 31. Bracket; 32. Rotating shaft; 33. Motor; 4. Hydraulic rod; 5. Connecting ear; 6. Pulley; 7. Pull rope; 8. Lifting assembly; 9. Horizontal board 1; 10. Horizontal board 2; 11. Connecting rope; 12. Limiting plate; 13. Spring; 14. Sliding rod; 15. Lifting rope; 16. Hook. DETAILED DESCRIPTION

[0027] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0028] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] Example 1:

[0031] like Figure 1-4 As shown, a device for testing the reactance parameters of a permanent magnet motor based on a voltage integration method includes a test bench 1.

[0032] The top of the test bench 1 is fixed with a vertical plate 2 by bolts, and a retractable component 3 is provided on the top of the vertical plate 2, and a hydraulic rod 4 is fixedly installed on the outer wall of one side of the vertical plate 2. The retractable component 3 includes a bracket 31 and a motor 33. The bracket 31 is fixed to the top of the vertical plate 2 by bolts. The inner wall of the bracket 31 is rotatably connected to the rotating shaft 32. One end of the rotating shaft 32 passes through the bracket 31 and is fixedly connected to the output shaft of the motor 33 through a coupling. The motor 33 is fixedly connected to the outer wall of the bracket 31. The telescopic end of the hydraulic rod 4 is fixedly connected to two connecting ears 5. The opposite side of the two connecting ears 5 is rotatably connected to a pulley 6. A pull rope 7 is wound around the outer wall of the rotating shaft 32. One end of the pull rope 7 is fixedly connected to the rotating shaft 32, and the other end of the pull rope 7 is connected to the lifting component 8, and the pull rope 7 is movably matched with the outer wall of the pulley 6.

[0033] The starting motor 33 drives the rotating shaft 32 to rotate, realizes the unwinding of the pull rope 7, and causes the lifting assembly 8 to descend as a whole. During this period, the hydraulic rod 4 is started to push the lifting assembly 8 outward, so that it moves to above the permanent magnet motor and stops moving. As the rotating shaft 32 continues to unwind, the lifting assembly 8 gradually approaches the permanent magnet motor. After turning off the motor 33 and fixing the permanent magnet motor on the lifting assembly 8, the motor 33 and the hydraulic rod 4 are started again to lift the permanent magnet motor and gradually move it above the test bench 1. After the position is determined, the hydraulic rod 4 is turned off, and the rotating shaft 32 unwinds the pull rope 7 again, driving the permanent magnet motor to land steadily on the top of the test bench 1. At this time, the reactance parameters of the permanent magnet motor can be tested by the voltage scoring method. This test method is the same as the test method in the patent with Chinese patent application number CN28031145Y. It is a prior art and will not be repeated in this embodiment.

[0034] By providing the retractable assembly 3 and the hydraulic rod 4, the permanent magnet motor can be hoisted and moved to the top of the test bench 1 by utilizing the cooperation of the two, which reduces the difficulty of manual handling and improves the convenience of use of the device.

[0035] In this embodiment, the lifting assembly 8 includes a horizontal plate 9 and a lifting rope 15. The lifting rope 15 is movably inserted into the inner wall of the horizontal plate 9. Both ends of the lifting rope 15 pass through the horizontal plate 9, and both ends of the lifting rope 15 are fixedly connected to a hook 16.

[0036] The hook 16 is passed through the lifting lug of the permanent magnet motor. If the two lifting lugs are at different heights, the heights of the two hooks 16 can be adjusted accordingly by pulling the lifting rope 15 .

[0037] By providing the horizontal plate 9 and the lifting rope 15, the lifting rope 15 can be movably inserted in the horizontal plate 9, so that the height of the two hooks 16 can be flexibly adjusted according to the different heights of the permanent magnet motor lifting ears, thereby improving the flexibility and applicability of the device.

[0038] Example 2:

[0039] A device for testing the reactance parameters of a permanent magnet motor based on the voltage integration method. This embodiment makes the following improvements on the basis of embodiment 1: Figure 1-4 As shown:

[0040] The end of the pull rope 7 is fixedly connected to a plurality of connecting ropes 11 , and the other ends of all the connecting ropes 11 are fixedly connected to the same horizontal plate 2 10 .

[0041] The second transverse plate 10 is located below the first transverse plate 9 , and two symmetrically arranged sliding rods 14 are fixedly connected to the top of the second transverse plate 10 , and the sliding rods 14 are slidably fitted in the inner wall of the first transverse plate 9 .

[0042] The top of the slide bar 14 is fixedly connected to the limit plate 12 , and the outer wall of the slide bar 14 is sleeved with a spring 13 , and both ends of the spring 13 are fixedly connected to the horizontal plate 9 and the limit plate 12 respectively.

[0043] All of the connecting ropes 11 pass through the horizontal plate 1 9 , and the hanging ropes 15 are movably fitted on the inner wall of the horizontal plate 2 10 .

[0044] When the pull rope 7 is wound, the pull rope 7 first drives the cross plate 2 10 to rise through the connecting rope 11 until the cross plate 2 10 contacts the suspension rope 15 and is blocked by the suspension rope 15, so that the cross plate 2 10 drives the cross plate 1 9 to rise together, thereby realizing the lifting of the permanent magnet motor. Since the cross plates 1 9 and the cross plates 2 10 fit together, during the lifting process, the cross plates 1 9 and the cross plates 2 10 can clamp and limit the suspension rope 15 so that it will not move, thereby ensuring that the permanent magnet motor will not change its posture during the lifting process; when the permanent magnet motor is removed, the connecting rope 11 is reset under the elastic force of the spring 13 for next use.

[0045] By setting up the horizontal plate 2 10, the horizontal plates 1 9 and 2 10 are used to clamp and limit the lifting rope 15 to prevent it from moving, thereby ensuring that the posture of the permanent magnet motor will not change during the lifting process, thereby improving the stability of the lifting.

[0046] Working principle: When the device is in use, the motor 33 is started to drive the rotating shaft 32 to rotate, so as to unwind the pull rope 7, causing the lifting assembly 8 to drop as a whole. During this period, the hydraulic rod 4 is started to push the entire lifting assembly 8 outward. When the lifting assembly 8 moves as a whole to above the permanent magnet motor, it stops moving. Under the continuous unwinding of the rotating shaft 32, the hook 16 drops to an appropriate height, and then the motor 33 is turned off. The lifting rope 15 is pulled according to the height of the permanent magnet motor lifting ear, and the height difference between the two hooks 16 is adjusted. After the adjustment is completed, the hook 16 is hooked on the lifting ear, and then the motor 33 and the hydraulic rod 4 are started again to lift the permanent magnet motor and gradually move it above the test bench 1. After the position is determined, the hydraulic rod 4 is turned off, and the rotating shaft 32 unwinds the pull rope 7 again, driving the permanent magnet motor to land steadily on the top of the test bench 1. At this time, the voltage scoring method is used to test the reactance parameters of the permanent magnet motor. After the test is completed, the above steps are repeated again to remove the permanent magnet motor from the test bench 1.

[0047] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A device for testing reactance parameters of a permanent magnet motor based on a voltage integration method, comprising a test bench (1), characterized in that: The top of the test bench (1) is fixed with a vertical plate (2) by bolts, a retractable assembly (3) is provided on the top of the vertical plate (2), and a hydraulic rod (4) is fixedly installed on the outer wall of one side of the vertical plate (2), the telescopic end of the hydraulic rod (4) is fixedly connected to two connecting ears (5), the opposite sides of the two connecting ears (5) are rotatably connected to a pulley (6), a pull rope (7) is wound around the outer wall of the rotating shaft (32), one end of the pull rope (7) is fixedly connected to the rotating shaft (32), and the other end of the pull rope (7) is connected to the hoisting assembly (8), and the pull rope (7) is movably matched with the outer wall of the pulley (6).

2. The device for testing reactance parameters of a permanent magnet motor based on a voltage integration method according to claim 1, characterized in that: The retractable assembly (3) comprises a bracket (31) and a motor (33); the bracket (31) is fixed to the top of the vertical plate (2) by bolts; the inner wall of the bracket (31) is rotatably connected to a rotating shaft (32).

3. The device for testing reactance parameters of a permanent magnet motor based on a voltage integration method according to claim 2, characterized in that: One end of the rotating shaft (32) passes through the bracket (31) and is fixedly connected to the output shaft of the motor (33) through a coupling, and the motor (33) is fixedly connected to the outer wall of the bracket (31).

4. The device for testing reactance parameters of a permanent magnet motor based on a voltage integration method according to claim 1, characterized in that: The hoisting assembly (8) comprises a transverse plate (9) and a hoisting rope (15), wherein the hoisting rope (15) is movably inserted into the inner wall of the transverse plate (9), both ends of the hoisting rope (15) pass through the transverse plate (9), and both ends of the hoisting rope (15) are fixedly connected with a hook (16).

5. The device for testing reactance parameters of a permanent magnet motor based on a voltage integration method according to claim 4, characterized in that: The end of the pull rope (7) is fixedly connected to a plurality of connecting ropes (11), and the other ends of all the connecting ropes (11) are fixedly connected to the same horizontal plate 2 (10).

6. The device for testing reactance parameters of a permanent magnet motor based on a voltage integration method according to claim 5, characterized in that: The second transverse plate (10) is located below the first transverse plate (9), and the top of the second transverse plate (10) is fixedly connected with two symmetrically arranged sliding rods (14), and the sliding rods (14) are slidably matched with the inner wall of the first transverse plate (9).

7. The device for testing reactance parameters of a permanent magnet motor based on a voltage integration method according to claim 6, characterized in that: The top of the slide bar (14) is fixedly connected to the limit plate (12), and the outer wall of the slide bar (14) is provided with a spring (13), and the two ends of the spring (13) are fixedly connected to the horizontal plate (9) and the limit plate (12) respectively.

8. The device for testing reactance parameters of a permanent magnet motor based on a voltage integration method according to claim 7, characterized in that: All the connecting ropes (11) pass through the first transverse plate (9), and the hanging ropes (15) are movably fitted on the inner wall of the second transverse plate (10).

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