Variable frequency speed regulation three-phase asynchronous motor strength testing machine

Abstract

The utility model relates to the field of strength testing machines, in particular to a variable frequency speed regulation three-phase asynchronous motor strength testing machine which comprises a box body and two first gears, the outer surface of each first gear is meshed with a second gear, and the outer surfaces of each first gear and each second gear are rotationally connected with the box body. A first gear is meshed with a corresponding second gear, so that the second gear is driven by the first gear, at the moment, a rotating disc starts to rotate, a second inserting hole in a supporting rod and a first inserting hole in the corresponding rotating disc at different positions are placed on the same central axis, and at the moment, an internal threaded column is inserted along the corresponding first inserting hole; and then a stud is inserted from the other side of the rotating disc, and the stud is rotated to be fixedly connected with the corresponding internal threaded column, so that the supporting rod can be fixed according to different positions, and the effect that the amplitude can be adjusted by fixing the supporting rod at different positions on the rotating disc is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of strength testing machines, in particular to a variable frequency speed regulating three-phase asynchronous motor strength testing machine. Background Art

[0002] A three-phase asynchronous motor strength tester is an auxiliary device for testing the strength of three-phase asynchronous motors. It has been widely used in the field of testing equipment. Existing three-phase asynchronous motors are greatly affected by environmental vibrations and are prone to disintegration in a severe vibration environment. Therefore, it is necessary to perform strength testing on three-phase asynchronous motors before leaving the factory to determine the occasions in which the motor can be used and the level of vibration it can withstand.

[0003] After searching, the Chinese patent with publication number CN215218000U discloses a three-phase asynchronous motor strength testing machine, which drives the first gear to rotate through a variable frequency motor. The first gear is meshed with the second gear for transmission connection, so that the rotating shaft drives the cam to rotate, so that the vibration plate vibrates up and down under the cooperation of the cam, the retraction rod and the spring, thereby causing the three-phase asynchronous motor body to vibrate. By changing the output frequency of the variable frequency motor, the vibration frequency of the vibration plate is changed, and whether the three-phase asynchronous motor body disintegrates is observed, the vibration level that the three-phase asynchronous motor body can withstand is judged, and then the strength test of the batch of three-phase asynchronous motor bodies is completed. It replaces the cylinder as the power output, facilitates the control of the vibration frequency, and improves the use effect of the device. However, this device cannot adjust the vibration amplitude and cannot perform more detailed strength tests on the three-phase asynchronous motor. It is easy to cause direct damage to the motor when the vibration intensity is too large, resulting in inaccurate test results.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0005] In view of the above background technology, the existing technology has the problem that the amplitude cannot be adjusted.

[0006] The utility model discloses a variable frequency speed regulation three-phase asynchronous motor strength testing machine, comprising a box body and two first gears, the outer surface of each of the first gears is meshed with a second gear, the outer surface of each of the first gear and the second gear is rotatably connected to the box body, the ends of the two second gears close to each other are fixedly connected to a second connecting rod, the ends of the two second connecting rods close to each other are fixedly connected to a turntable, the outer surface of each of the turntables is provided with a plurality of first jacks, the inner wall of each of the first jacks is plugged with an internal threaded column, the inner wall of each of the internal threaded column is threadedly connected with a stud, and the sides of the two turntables close to each other are slidably connected to a support rod.

[0007] Furthermore, a second insertion hole is formed on the outer surface of each support rod, and the inner wall of each second insertion hole is plugged into the corresponding internal threaded column.

[0008] Furthermore, the inner wall of the box is slidably connected to a support frame, the upper surface of the support frame is fixedly mounted with an asynchronous motor body, the bottom surface of the support frame is fixedly connected to two connecting blocks, and the inner wall of each connecting block is rotatably connected to the corresponding support rod.

[0009] Furthermore, the inner bottom wall of the box is fixedly connected to a fixed block, and a dual-axis motor is fixedly installed on the upper surface of the fixed block. The two output ends of the dual-axis motor are fixedly connected to a first connecting rod, and the ends of the two first connecting rods that are away from each other are fixedly connected to the corresponding first gears.

[0010] Furthermore, two sliding grooves are provided on the upper surface of the support frame, and the inner wall of each sliding groove is slidably connected to a sliding rod.

[0011] Furthermore, the bottom end of each sliding rod is fixedly connected to the box body, the top end of each sliding rod is fixedly connected to a connecting plate, the outer surface of each connecting plate is fixedly connected to the box body, and the outer surface of the box body is hinged with a box door.

[0012] Furthermore, two push plates are fixedly connected to the bottom surface of the support frame, the bottom surface of each push plate is fixedly connected to a push rod, the bottom end of each push rod is fixedly connected to a spring, the outer surface of each push rod is slidably connected to a connecting column, the bottom end of each connecting column is fixedly connected to the box body, and the bottom end of each spring is fixedly connected to the corresponding connecting column.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The utility model is provided with a first gear, a second gear, a second connecting rod, a turntable, a first socket, a second socket, a support rod, an internally threaded column, a stud and other components. The first gear and the corresponding second gear are engaged with each other so that the second gear will be driven by the first gear. At this time, the turntable starts to rotate. The second socket on the support rod and the first socket at a different position on the corresponding turntable are placed on the same central axis. At this time, the internally threaded column is inserted along the corresponding first socket, and then the stud is inserted from the other side of the turntable, and the stud is rotated to connect and fix it with the corresponding internally threaded column. In this way, the support rod can be fixed according to different positions, thereby achieving the effect that the device can adjust the amplitude by fixing the support rod at different positions on the turntable.

[0015] 2. The utility model sets up components such as a support frame, a push rod, a push plate, a spring, and a connecting column. The elastic force of the spring pushes the corresponding push rod to push the push plate to support the support frame. Then, in the process of vibrating the support frame, the spring will be repeatedly stretched and compressed without affecting the vibration amplitude. When the position of the support rod needs to be adjusted, the support rod is removed, and the elastic force of the spring can support the support frame to prevent it from falling, thereby achieving the effect of supporting the support frame when the position of the support rod is easily changed through the setting of the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the box of the utility model;

[0019] Figure 3 This is a schematic diagram of the spring structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the turntable structure of the utility model.

[0021] In the figure: 1. Box body; 2. Internal threaded column; 3. Stud; 4. Box door; 5. Connecting plate; 6. Sliding rod; 7. Support frame; 8. Slide groove; 9. Asynchronous motor body; 10. Fixed block; 11. Dual-axis motor; 12. First connecting rod; 13. First gear; 14. Second gear; 15. Second connecting rod; 16. Turntable; 17. Support rod; 18. Connecting block; 19. First jack; 20. Second jack; 21. Push plate; 22. Push rod; 23. Connecting column; 24. Spring. DETAILED DESCRIPTION

[0022] The following diagrams illustrate various embodiments of the present invention. For clarity, many physical details will be included in the following description. However, it should be understood that these physical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these physical details are not essential. Furthermore, to simplify the illustrations, some commonly used structures and components are depicted in a simplified schematic manner.

[0023] See also Figure 2 、 Figure 3 、 Figure 4The utility model provides a variable frequency speed regulation three-phase asynchronous motor strength testing machine, including a box body 1 and two first gears 13, the outer surface of each first gear 13 is meshed with a second gear 14, the first gear 13 serves as a driving wheel, and the second gear 14 serves as a driven wheel. The outer surface of each first gear 13 and the second gear 14 is rotatably connected to the box body 1, and the mutual engagement between the first gear 13 and the corresponding second gear 14 makes the rotation of the first gear 13 drive the corresponding second gear 14 to start rotating. The ends of the two second gears 14 close to each other are fixedly connected to a second connecting rod 15, and the ends of the two second connecting rods 15 close to each other are fixedly connected to a turntable 16, and the rotation of the second gear 14 can drive the corresponding turntable 16 to rotate around the central axis of the corresponding second connecting rod 15.

[0024] In this embodiment, a plurality of first insertion holes 19 are provided on the outer surface of each turntable 16, and the first insertion holes 19 are equidistantly distributed on the turntable 16. The central axis of each first insertion hole 19 is equidistant from the central axis of the adjacent first insertion hole 19. An internal threaded column 2 is inserted into the inner wall of each first insertion hole 19, and a stud 3 is threadedly connected to the inner wall of each internal threaded column 2. The two turntables 16 are slidably connected to a support rod 17 on the side close to each other. Specifically, the internal threaded column 2 can be inserted along the corresponding first insertion hole 19, and can be connected to the corresponding internal threaded column 2 through the setting of the stud 3. The outer sides of the stud 3 and the internal threaded column 2 are provided with an internal hexagonal groove.

[0025] In this embodiment, a second socket 20 is provided on the outer surface of each support rod 17, and the inner wall of each second socket 20 is connected to the corresponding internal threaded column 2. Specifically, by placing the second socket 20 on the support rod 17 and the first socket 19 at different positions on the turntable 16 on the same central axis, the internal threaded column 2 is inserted along the second socket 20 and passed through the corresponding first socket 19, and then the support rod 17 can be fixed by installing the stud 3. At this time, the support rod 17 can slide on the corresponding turntable 16, and the support rod 17 can rotate around the corresponding internal threaded column 2 or the internal threaded column 2 can rotate in the first socket 19 and the second socket 20.

[0026] In a preferred embodiment, the inner wall of the box body 1 is slidably connected to the support frame 7, and the upper surface of the support frame 7 is fixedly mounted with an asynchronous motor body 9. By mounting the asynchronous motor body 9 at the center of the support frame 7, the vibration of the support frame 7 can be transmitted to the asynchronous motor body 9. The bottom surface of the support frame 7 is fixedly connected to two connecting blocks 18, and the inner wall of each connecting block 18 is rotatably connected to the corresponding support rod 17. Specifically, the corresponding support rod 17 is connected through the connecting block 18, so that the support rod 17 can rotate in the corresponding connecting block 18, and the support frame 7 can be pushed by the support rod 17.

[0027] In this embodiment, a fixed block 10 is fixedly connected to the inner bottom wall of the box body 1, and a dual-axis motor 11 is fixedly installed on the upper surface of the fixed block 10. The two output ends of the dual-axis motor 11 are fixedly connected to the first connecting rod 12. When the dual-axis motor 11 is started, it can drive the two first connecting rods 12 to rotate at the same time, and the rotation directions are the same. The ends of the two first connecting rods 12 away from each other are fixedly connected to the corresponding first gears 13. Through the connection between the first connecting rod 12 and the corresponding first gear 13, the dual-axis motor 11 can drive the two first gears 13 to rotate at the same time when it is started.

[0028] In this embodiment, two sliding grooves 8 are provided on the upper surface of the support frame 7, and the inner wall of each sliding groove 8 is slidably connected to a sliding rod 6. When the support frame 7 slides vertically along the box body 1, the support frame 7 can be limited by the setting of the sliding rod 6 to prevent the support frame 7 from tilting when sliding in the box body 1.

[0029] In this embodiment, the bottom end of each sliding rod 6 is fixedly connected to the box body 1, and the top end of each sliding rod 6 is fixedly connected to a connecting plate 5. The sliding rod 6 can be fixed by setting the connecting plate 5. The outer surface of each connecting plate 5 is fixedly connected to the box body 1, and the outer surface of the box body 1 is hinged with a box door 4. Specifically, the position of the support rod 17 can be adjusted by opening the box door 4, and the noise generated by vibration can be reduced by closing the box door 4.

[0030] In this embodiment, two push plates 21 are fixedly connected to the bottom surface of the support frame 7, and the push plates 21 are laid horizontally on the bottom surface of the support frame 7. The bottom surface of each push plate 21 is fixedly connected to a push rod 22, and the push rod 22 is placed vertically to the corresponding push plate 21. The bottom end of each push rod 22 is fixedly connected to a spring 24, and the spring 24 is arranged in the corresponding connecting column 23. The connection between the spring 24 and the corresponding push rod 22 can make the push rod 22 elastic, and the support frame 7 can be supported by the spring 24. The outer surface of each push rod 22 is slidably connected to the connecting column 23, and the push rod 22 can slide vertically along the corresponding connecting column 23. The bottom end of each connecting column 23 is fixedly connected to the box body 1, and the bottom end of each spring 24 is fixedly connected to the corresponding connecting column 23.

[0031] The above is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of the claims of the present invention.

Claims

1. A variable frequency speed regulating three-phase asynchronous motor strength testing machine, comprising a housing (1) and two first gears (13), characterized in that: The outer surface of each first gear (13) is meshed with a second gear (14), the outer surface of each first gear (13) and second gear (14) is rotatably connected to the box (1), the ends of the two second gears (14) close to each other are fixedly connected to a second connecting rod (15), the ends of the two second connecting rods (15) close to each other are fixedly connected to a turntable (16), the outer surface of each turntable (16) is provided with a plurality of first jacks (19), the inner wall of each first jack (19) is plugged with an internal threaded column (2), the inner wall of each internal threaded column (2) is threadedly connected with a stud (3), and the sides of the two turntables (16) close to each other are slidably connected to a support rod (17).

2. A variable frequency speed regulating three-phase asynchronous motor strength testing machine according to claim 1, characterized in that: The outer surface of each support rod (17) is provided with a second insertion hole (20), and the inner wall of each second insertion hole (20) is plugged into the corresponding internal threaded column (2).

3. A variable frequency speed regulating three-phase asynchronous motor strength testing machine according to claim 1, characterized in that: The inner wall of the box (1) is slidably connected to a support frame (7), an asynchronous motor body (9) is fixedly mounted on the upper surface of the support frame (7), and two connecting blocks (18) are fixedly connected to the bottom surface of the support frame (7), and the inner wall of each connecting block (18) is rotatably connected to the corresponding support rod (17).

4. A variable frequency speed regulating three-phase asynchronous motor strength testing machine according to claim 3, characterized in that: A fixed block (10) is fixedly connected to the inner bottom wall of the box body (1), a dual-axis motor (11) is fixedly mounted on the upper surface of the fixed block (10), both output ends of the dual-axis motor (11) are fixedly connected to a first connecting rod (12), and the ends of the two first connecting rods (12) that are away from each other are fixedly connected to the corresponding first gear (13).

5. A variable frequency speed regulating three-phase asynchronous motor strength testing machine according to claim 3, characterized in that: Two slide grooves (8) are provided on the upper surface of the support frame (7), and the inner wall of each slide groove (8) is slidably connected to a slide rod (6).

6. A variable frequency speed regulating three-phase asynchronous motor strength testing machine according to claim 5, characterized in that: The bottom end of each slide rod (6) is fixedly connected to the box body (1), the top end of each slide rod (6) is fixedly connected to a connecting plate (5), the outer surface of each connecting plate (5) is fixedly connected to the box body (1), and the outer surface of the box body (1) is hinged with a box door (4).

7. A variable frequency speed regulating three-phase asynchronous motor strength testing machine according to claim 5, characterized in that: The bottom surface of the support frame (7) is fixedly connected to two push plates (21), the bottom surface of each push plate (21) is fixedly connected to a push rod (22), the bottom end of each push rod (22) is fixedly connected to a spring (24), the outer surface of each push rod (22) is slidably connected to a connecting column (23), the bottom end of each connecting column (23) is fixedly connected to the box body (1), and the bottom end of each spring (24) is fixedly connected to the corresponding connecting column (23).

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