A testing device for overhauling and testing vertical electric motors

Abstract

This disclosure relates to a testing device for overhauling and testing vertical electric motors, comprising a testing platform and a platform base. The testing platform and the platform base are fixedly connected by a circular column. The circular column, the testing platform, and the platform base are coaxially arranged. The testing platform is provided with multiple sets of annular grooves that gradually expand outwards. The annular grooves are connected to the flange stop of the vertical electric motor. The spacing between adjacent annular grooves gradually increases from the inside to the outside. Multiple support ribs are also evenly distributed between the testing platform and the platform base. The gradient-expanding annular grooves can cover the flange stop sizes of motors of different specifications, while ensuring the coaxiality between the motor shaft and the platform center hole. This ensures that after the motor shaft extends into the platform center hole, the fitting error between the motor shaft and the platform center hole is reduced, thereby reducing the eccentric vibration phenomenon that may occur during rotor operation, and thus improving the accuracy of motor performance testing.

Description

Technical Field

[0001] This disclosure belongs to the field of motor testing technology, specifically relating to a testing device for overhauling and testing vertical motors. Background Technology

[0002] The statements herein provide only background information in relation to this disclosure and do not necessarily constitute prior art.

[0003] Vertical electric motors, as core power equipment in the industrial field, exhibit a high degree of diversity in their models and specifications. Taking the national standard Y series as an example, it covers more than 20 models, including 80, 90S, 90L to 315L2, with flange face stop dimensions ranging from 130mm to 680mm in 9 different gradients, and shaft extension diameters varying from 18mm to 120mm as power increases.

[0004] After disassembly and repair, vertical motors must undergo a no-load test run to ensure that there is no abnormal noise or vibration exceeding standards after repair. Currently, most no-load test run devices use a fixed-size platform that must match the flange stop size of the vertical motor to be tested. This leads to the need to constantly change adapters when testing different models of vertical motors due to differences in flange stop sizes, in order to ensure precise alignment between the motor shaft and the platform's center hole. High-power vertical motors cannot be placed on small-sized testing platforms because their flange stop sizes do not match, requiring the use of larger-sized testing platforms, which reduces testing efficiency. Furthermore, when the fit error between the shaft extension diameter and the platform's center hole exceeds ±2 mm, it can easily cause rotor eccentric vibration, thus affecting the accuracy of the test. Utility Model Content

[0005] The purpose of this disclosure is to provide a testing device for the overhaul and test run of a vertical electric motor, which can at least solve one of the above-mentioned technical problems.

[0006] To achieve the above objectives, one or more embodiments of this disclosure provide a testing device for overhauling and testing a vertical electric motor, including a testing platform and a platform base. The testing platform and the platform base are fixedly connected by a circular column. The circular column, the testing platform, and the platform base are coaxially arranged. The testing platform is provided with multiple sets of annular grooves that gradually spread outward in sequence. The annular grooves can be connected to the flange stop of the vertical electric motor.

[0007] Furthermore, the width and depth of adjacent sets of annular grooves are both greater on the outer side than on the inner side.

[0008] Furthermore, the spacing between adjacent annular grooves gradually increases from the inside out.

[0009] Furthermore, a circular through hole is provided at the center of the testing platform, penetrating the circular column and the platform base.

[0010] Furthermore, both the detection platform and the platform base have circular cross-sections and the same cross-sectional size.

[0011] Furthermore, the cross-sectional dimension of the circular column is smaller than the cross-sectional dimension of the testing platform.

[0012] Furthermore, multiple supporting ribs are evenly distributed between the testing platform and the platform base.

[0013] Furthermore, the longitudinal edge of the supporting rib is fixedly connected to the circular column, and the two transverse edges are fixedly connected to the testing table and the platform base.

[0014] Furthermore, the end of the supporting rib that contacts the circular column has an arc edge, and the other end has a rectangular plane; the cross-section of the supporting rib is rectangular.

[0015] Furthermore, a chamfer is provided at the connection between the edge of the circular through hole and the detection platform.

[0016] The beneficial effects of one or more of the above technical solutions are as follows:

[0017] This disclosure utilizes a gradient diffusion-type annular groove to cover the flange stop dimensions of motors of different specifications, while ensuring the coaxiality between the motor shaft and the platform center hole. This ensures that after the motor shaft extends into the platform center hole, the fitting error between the motor shaft and the platform center hole is reduced, thereby reducing the eccentric vibration phenomenon that may occur during rotor operation and improving the accuracy of motor performance testing. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0019] Figure 1 This is a perspective view of the detection device and the vertical motor in one or more embodiments of this disclosure;

[0020] Figure 2 This is a top view schematic diagram of the detection device in one or more embodiments of this disclosure.

[0021] In the diagram, 1 is the testing platform; 2 is the platform base; 3 is the circular column; 4 is the supporting rib; 5 is the annular groove; 6 is the circular through hole; and 7 is the vertical motor. Detailed Implementation

[0022] like Figures 1-2As shown, this embodiment provides a testing device for overhauling and testing a vertical electric motor 7, including a testing platform 1 and a platform base 2.

[0023] like Figure 1 As shown, the testing platform 1 and the platform base 2 are fixedly connected by a circular column 3, which ensures the stability of the entire structure; the circular column 3, the testing platform 1 and the platform base 2 are coaxially arranged, which ensures the stability of the entire testing device and the accuracy of the vertical motor 7 during testing.

[0024] A circular through hole 6 is provided at the center of the testing platform 1, which passes through the circular column 3 and the platform base 2; the cross-sections of the testing platform 1 and the platform base 2 are both circular and of the same size; the cross-sectional dimension of the circular column 3 is smaller than that of the testing platform 1; the cooperation between the circular column 3 and the testing platform 1 and the platform base 2 ensures the structural strength of the entire testing platform 1, enabling it to withstand heavy loads without deformation.

[0025] The testing platform 1 is equipped with multiple sets of annular grooves 5 that gradually expand outwards. The flange stop on the flange of the vertical motor 7 is placed in the annular groove 5, ensuring the stability of the vertical motor 7 flange after contact with the testing platform 1. It can adapt to the flange stop size of 9 or more different models of motors from 130mm to 680mm as specified by national standards. Each set of annular grooves 5 is adapted to the flange stop of a certain specification of vertical motor 7, realizing the testing function of "one platform for multiple models".

[0026] like Figure 2 As shown, the width and depth of the two adjacent sets of grooves in the annular groove 5 are both greater on the outer side than on the inner side, and the spacing between adjacent annular grooves in the annular groove 5 gradually increases from the inside to the outside; while ensuring the positioning accuracy of vertical motors 7 of different sizes, the effective load-bearing area utilization rate of the testing table 1 is improved.

[0027] Specifically, the annular groove 5 is connected to the flange stop of the vertical motor 7 of the corresponding specification. The groove width of the annular groove 5 is consistent with the thickness of the flange stop, and the groove width of the annular groove 5 is consistent with the annular width of the flange stop.

[0028] To ensure structural strength when the circular column 3 is connected to the testing platform 1 and platform base 2, four supporting ribs 4 are cross-shaped and arranged between the testing platform 1 and platform base 2. The longitudinal edges of the supporting ribs 4 are fixedly connected to the circular column 3, and the two transverse edges are fixedly connected to the testing platform 1 and platform base 2. The end of the supporting rib 4 that contacts the circular column 3 is an arc edge, and the other end is a rectangular plane. The cross-section of the supporting rib 4 is rectangular. This not only enhances the stability of the structure but also facilitates production and installation, ensuring the durability and load-bearing capacity of the entire structure. The supporting ribs 4 in this application are made of high-strength steel or aluminum alloy, which not only has good mechanical properties but also ensures that they will not deform under heavy loads while controlling weight and cost.

[0029] The edge of the circular through hole 6 is provided with a transition chamfer at the connection between it and the test platform 1, which can avoid rigid friction damage between the motor shaft extension end and the hole wall.

[0030] The working principle of this utility model:

[0031] The motor shaft of the vertical motor is equipped with a flange, and the flange has a flange stop. During use, the motor to be tested is placed vertically in the center area of ​​the test platform 1. The corresponding annular groove 5 is selected according to the size of its flange stop to ensure that the flange stop is accurately embedded in the annular groove 5 (the outer wide and deep groove is suitable for large-size motors, and the inner narrow and shallow groove is suitable for small-size motors). At the same time, the motor shaft extension is suspended through the central through hole. After the motor is started, the vibration generated by its operation is transmitted to the annular groove 5 through the flange stop. The load is distributed by the gradient groove structure, and the vibration energy is evenly transmitted to the platform base 2 through the composite support system formed by the coaxial circular column 3 and the evenly distributed support ribs 4 (the circular column 3 bears the axial pressure, and the support ribs 4 resist the radial bending moment). During this process, the transition chamfer set on the edge of the circular through hole 6 avoids the rigid contact between the shaft extension and the hole wall. The precise control of the flatness and coaxiality of the platform ensures that the motor rotor is in a standard alignment state. Finally, the quality of the motor after repair is judged by detecting the vibration amplitude and abnormal noise data.

[0032] While the specific embodiments of this disclosure have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of this disclosure. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of this disclosure are still within the scope of protection of this disclosure.

Claims

1. A detection device for vertical motor overhauling trial rotation, characterized in that, The utility model relates to a detection platform, which comprises a detection table and a platform base, and the detection table and the platform base are fixedly connected through a circular column, the circular column, the detection table and the platform base are coaxially arranged, a plurality of groups of annular grooves are arranged on the detection table and gradually spread outward in sequence, and the annular grooves can be connected with the flange stopper of a vertical motor.

2. The detection device for the test run of the vertical motor repair according to claim 1, characterized in that, The width and depth of the grooves of the adjacent two groups of grooves are larger on the outside than on the inside.

3. The detection device for the test run of the vertical motor according to claim 1, characterized in that, The spacing between the adjacent annular grooves gradually increases from the inside to the outside.

4. The detection device for the test run of the vertical motor according to claim 1, characterized in that, A circular through hole is further arranged on the center position of the detection table and penetrates the circular column and the platform base.

5. The detection device for the test run of the vertical motor according to claim 1, characterized in that, The cross sections of the detection table and the platform base are circular and have the same size.

6. The detection device for the test run of the vertical motor according to claim 1, characterized in that, The cross section size of the circular column is smaller than that of the detection table.

7. The detection device for the test run of the vertical motor according to claim 1, characterized in that, A plurality of support rib plates are uniformly arranged between the detection table and the platform base.

8. The detection device for the test run of the vertical motor repair according to claim 7, characterized in that, The longitudinal edges of the support rib plates are fixedly connected with the circular column, and the two lateral edges are fixedly connected with the detection table and the platform base.

9. The detection device for the test run of the vertical motor according to claim 7, characterized in that, The end of the support rib plate in contact with the circular column is a circular arc edge, and the other end is a rectangular plane; the cross section of the support rib plate is rectangular.

10. The detection device for the test run of the vertical motor repair according to claim 4, characterized in that, A transition chamfer is arranged at the connection between the hole edge of the circular through hole and the detection table.

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