Motor eccentric fault simulation tool and eccentric vibration test system

Abstract

The utility model discloses a motor eccentric fault simulation tool and an eccentric vibration test system, and the motor eccentric fault simulation tool comprises a tool housing, a tool adapter plate, a tool end cover, a bearing pedestal, a stator, and a rotor. The tool adapter plate and the tool end cover are connected to the two axial ends of the tool machine shell respectively, the tool adapter plate is fixed to the tool machine shell, and the tool end cover can move relative to the tool machine shell in the radial direction of the tool machine shell. The bearing seat is connected to the tool adapter plate and can move relative to the tool adapter plate in the radial direction of the tool machine shell, the stator is arranged outside the rotor in a sleeving mode and fixed to the tool machine shell, one end, in the axial direction, of the rotor is rotationally connected to the tool end cover, and the other end of the rotor is rotationally connected to the bearing seat. According to the scheme, the positions of the two ends of the rotor can be adjusted in the radial direction relative to the tool machine shell, so that different eccentric degree conditions of the motor rotor relative to the stator are simulated, rapid adjustment of different eccentricity can be achieved, and the adjustment process is simple and efficient.

Description

Technical Field

[0001] This application relates to the field of motor vibration detection technology, and in particular to a motor eccentricity fault simulation fixture and eccentricity vibration testing system. Background Technology

[0002] With the advancement of the global electric vehicle boom, the market's requirements for new energy vehicles are becoming more specific and stringent. The driving comfort of a car is closely related to the electric drive system, which is a core component of electric vehicles. The NVH (Noise, Vibration, and Harshness) performance of the electric drive system is receiving increasing attention.

[0003] The vibration and noise performance of the motor directly affects the NVH performance of electric vehicles. The motor is mainly composed of a stator and a rotor. The electromagnetic force mainly occurs in the air gap between the stator and rotor, providing the motor with speed and torque. However, in reality, there is an eccentricity between the stator and rotor, which leads to motor vibration problems.

[0004] Currently, many technologies focus on the diagnosis of eccentricity faults and the simulation of eccentricity technology. Among them, the simulation devices used to simulate eccentricity in the actual process of motors are mostly complex in structure, and the process of adjusting the degree of eccentricity between the stator and rotor is complicated and cumbersome. Utility Model Content

[0005] This application provides a motor eccentricity fault simulation fixture and an eccentricity vibration testing system to solve the problem that the complex structure of current motor eccentricity simulation devices leads to a complicated and cumbersome process for adjusting the degree of stator and rotor eccentricity.

[0006] To solve the above-mentioned technical problems, the first technical solution provided in this application is: a motor eccentricity fault simulation fixture, comprising: a fixture housing, a fixture adapter plate, a fixture end cover, a bearing housing, a stator, and a rotor; the fixture adapter plate and the fixture end cover are respectively connected to the two axial ends of the fixture housing, and the fixture adapter plate is fixed to the fixture housing, while the fixture end cover can move radially relative to the fixture housing; the bearing housing, stator, and rotor are all located inside the fixture housing, the bearing housing is connected to the fixture adapter plate and can move radially relative to the fixture adapter plate, the stator is sleeved outside the rotor and fixed to the fixture housing, and one axial end of the rotor is rotatably connected to the fixture end cover and the other end is rotatably connected to the bearing housing.

[0007] According to one embodiment of this application, a first waist hole is provided on the tooling end cover, and a first round hole is provided on the end face of the tooling housing opposite to the tooling end cover, which can be aligned with the first waist hole. The tooling end cover can be fastened to the tooling housing by a first fastener passing through the first waist hole and fastened to the first round hole.

[0008] According to one embodiment of this application, a second waist hole is provided on the tooling adapter plate. The length direction of the second waist hole is the same as that of the first waist hole. A second round hole aligned with the second waist hole is provided on the end face of the bearing seat opposite to the tooling end cover. The bearing seat can be fastened to the tooling adapter plate by passing through the second waist hole and fastening it to the second round hole through the second fastener.

[0009] According to one embodiment of this application, the tooling end cap has a plurality of first waist holes, each first waist hole having the same length direction and each first waist hole being distributed along the circumference of the tooling end cap.

[0010] According to one embodiment of this application, the tooling adapter plate has a plurality of second waist holes, each second waist hole has the same length direction, and each second waist hole is distributed along the circumference of the tooling adapter plate.

[0011] According to one embodiment of this application, a measuring hole is provided on the tooling end cover, and the measuring hole is configured for inserting a measuring tool to measure the eccentricity of the rotor relative to the stator.

[0012] According to one embodiment of this application, the tooling end cap has a plurality of measuring holes, and the plurality of measuring holes are distributed along the circumference of the tooling end cap.

[0013] To solve the above-mentioned technical problems, the second technical solution provided in this application is: an eccentric vibration testing system, including the above-mentioned simulation fixture, and further including a dynamometer, a vibration sensor and a controller; the dynamometer is fixed to the fixture adapter plate and connected to the rotor, and is used to provide a load to the motor eccentric fault simulation fixture; the vibration sensor is in contact with the surface of the motor eccentric fault simulation fixture, and is used to collect vibration data of the motor eccentric fault simulation fixture when it runs under different degrees of eccentricity; the controller is used to control the rotor rotation of the motor eccentric fault simulation fixture.

[0014] According to one embodiment of this application, the eccentric vibration testing system further includes a host computer and a high-voltage power supply; the host computer is connected to the controller via a low-voltage wiring harness and is used to send instructions to the controller on rotor rotation parameters so that the rotor rotates under the rotation parameters; the high-voltage power supply is connected to the controller via a high-voltage wiring harness and is used to provide high-voltage electricity to the controller to drive the rotor rotation of the motor eccentric fault simulation tool.

[0015] According to one embodiment of this application, the eccentric vibration testing system further includes a vibration testing front end, which is electrically connected to the vibration sensor and is used to power the vibration sensor and store the vibration data collected by the vibration sensor.

[0016] The beneficial effects of this application are:

[0017] The motor eccentricity fault simulation fixture of this application includes a fixture housing, a fixture adapter plate, a fixture end cover, a bearing housing, a stator, and a rotor. One end of the rotor is rotatably connected to the fixture end cover, and the other end is rotatably connected to the bearing housing. Since the fixture end cover can move radially relative to the fixture housing, and the bearing housing can move radially relative to the fixture adapter plate, both ends of the rotor can be radially adjusted relative to the fixture housing, thereby simulating different degrees of eccentricity of the motor rotor relative to the stator. It can also achieve rapid adjustment of different eccentricities, and the adjustment process is simple and efficient. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the motor eccentricity fault simulation tooling provided in this application;

[0020] Figure 2 yes Figure 1 Main view of the motor eccentricity fault simulation fixture

[0021] Figure 3 yes Figure 2 AA section diagram;

[0022] Figure 4 These are simplified structural diagrams of two types of eccentricity in the motor eccentricity fault simulation fixture provided in this application;

[0023] Figure 5 yes Figure 3 An enlarged view of point a in the motor eccentricity fault simulation fixture;

[0024] Figure 6 yes Figure 3 A top view of the end cover of the fixture in the motor eccentricity fault simulation fixture;

[0025] Figure 7 yes Figure 3 A three-dimensional structural diagram of the fixture housing in the motor eccentricity fault simulation fixture;

[0026] Figure 8 yes Figure 3 An enlarged view of point b in the motor eccentricity fault simulation fixture;

[0027] Figure 9 yes Figure 3 A three-dimensional structural diagram of the bearing housing in a motor eccentricity fault simulation fixture;

[0028] Figure 10 yes Figure 9 A three-dimensional structural diagram of the bearing housing from another perspective;

[0029] Figure 11 This is a structural block diagram of the eccentric vibration testing system provided in this application;

[0030] Figure 12 This is a schematic diagram of the three-dimensional assembly structure of the motor eccentricity fault simulation fixture and dynamometer in the eccentricity vibration testing system of this application.

[0031] Explanation of reference numerals in the attached figures:

[0032] Eccentric vibration testing system 10; motor eccentricity fault simulation fixture 100; fixture housing 110; mounting cavity 1100; first circular hole 111; connecting flange 112; fixture end cover 120; first waist hole 121; measuring hole 122; fixture adapter plate 130; second waist hole 131; adapter plate through hole 132; rotary transformer 140; bearing seat 150; second circular hole 151; bearing 152; convex ring 153; overlapping platform 154; stator 160; rotor 170; dynamometer 200; vibration sensor 300; controller 400; high voltage power supply 500; host computer 600. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0034] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0035] This application provides a motor eccentricity fault simulation fixture for simulating different degrees of actual eccentricity between the motor stator and rotor. In one embodiment, refer to... Figures 1 to 3 , Figure 1 This is a three-dimensional structural diagram of the motor eccentricity fault simulation fixture provided in this application. Figure 2 yes Figure 1 The main view of the motor eccentricity fault simulation fixture. Figure 3 yes Figure 2 The AA cross-sectional view shows that the motor eccentricity fault simulation fixture 100 includes fixture housing 110, fixture end cover 120, fixture adapter plate 130, bearing seat 150, stator 160 and rotor 170.

[0036] The tooling adapter plate 130 and the tooling end cover 120 are respectively connected to the two axial ends of the tooling housing 110. The tooling adapter plate 130 is fixed to the tooling housing 110, and the tooling end cover 120 can move relative to the tooling housing 110 along the radial direction of the tooling housing 110 and be fastened to the tooling housing 110. The tooling housing 110, the tooling adapter plate 130 and the tooling end cover 120 together form the mounting cavity 1100. The bearing seat 150, the stator 160 and the rotor 170 are all located in the mounting cavity 1100 of the tooling housing 110.

[0037] The rotor 170 can rotate relative to the tooling housing 110. The stator 160 is sleeved on the rotor 170 and fixed to the tooling housing 110. The stator 160 and the rotor 170 cooperate to generate electromagnetic force, providing the rotor 170 with speed and torque. The stator 160 and the tooling housing 110 can be quickly fixed and installed using a heat-fitting process. The basic principle of the heat-fitting process is to use the property of thermal expansion and contraction to allow the tooling housing 110 to be assembled onto the stator 160. Specifically, the tooling housing 110 can be heated to a higher temperature to increase its volume, and then quickly assembled onto the stator 160. As the tooling housing 110 cools down, its volume will decrease, generating friction between it and the stator 160, thereby achieving a stable assembly.

[0038] The entire assembly of the heat-fitted stator 160 and tooling housing 110 can be fastened to the tooling adapter plate 130 using fasteners such as bolts or screws. Specifically, a connecting flange 112 is provided on the end face of the tooling housing 110 facing the tooling adapter plate 130. The connecting flange 112 and the tooling housing 110 are respectively provided with bolt holes. Fasteners such as bolts or screws are passed through the bolt holes on the connecting flange 112 and fastened to the bolt holes on the tooling adapter plate 130, thereby achieving the fastening between the tooling housing 110 and the adapter plate. Furthermore, in order to achieve faster fastening between the connecting flange 112 and the tooling adapter plate 130, a recessed area can be provided in the area of ​​the tooling adapter plate 130 corresponding to the connecting flange 112. The connecting flange 112 can be inserted into this recessed area, thereby achieving radial positioning of the connecting flange 112 relative to the tooling adapter plate 130.

[0039] The bearing housing 150 is connected to the tooling adapter plate 130 and can move radially relative to the tooling adapter plate 130 along the tooling housing 110. The tooling adapter plate 130 is used to adjust the eccentricity of the bearing housing 150, thereby adjusting the eccentricity of the rotor 170 axially close to the end of the tooling adapter plate 130.

[0040] One axial end of the rotor 170 is rotatably connected to the tooling end cover 120, and the other end is rotatably connected to the bearing housing 150, thereby allowing the rotor 170 to rotate relative to the tooling housing 110. Specifically, one axial end of the rotor 170 can be rotatably connected to the tooling end cover 120 via a position sensor such as a rotary transformer 140, and the other end can be rotatably connected to the bearing housing 150 via a bearing 152.

[0041] The rotary transformer 140 is fixed to the tooling end cover 120. As the core component of the drive motor, the rotary transformer 140 can accurately measure the position, speed, and direction of rotation of the rotor 170, and convert this information into signals that are fed back to the control system of the motor eccentricity fault simulation tooling 100, thereby achieving precise control of the motor eccentricity fault simulation tooling 100. Specifically, the rotary transformer 140 is also a small motor, comprising a stator, rotor, and winding coils. The stator of the rotary transformer 140 is fixed to the tooling end cover 120, and the rotor of the rotary transformer 140 is fixed to the rotor 170 of the simulation tooling and rotates synchronously with it. Since the use of the rotary transformer 140 to measure the position, speed, and direction of rotation of the motor rotor is a well-known technology in the field of motors, the structure, principle, and function of the rotary transformer 140 will not be elaborated further here.

[0042] As can be seen, the motor eccentricity fault simulation fixture 100 of this application includes a fixture housing 110, a fixture adapter plate 130, a fixture end cover 120, a bearing housing 150, a stator 160, and a rotor 170. One end of the rotor 170 is rotatably connected to the fixture end cover 120, and the other end is rotatably connected to the bearing housing 150. Since the fixture end cover 120 can move radially relative to the fixture housing 110, and the bearing housing 150 can move radially relative to the fixture adapter plate 130, that is, the bearing housing 150 can move radially relative to the fixture housing 110, both ends of the rotor 170 can be radially adjusted relative to the fixture housing 110, thereby simulating different degrees of eccentricity of the motor rotor 170 relative to the stator 160, and enabling rapid adjustment of different eccentricities. The adjustment process is simple and efficient.

[0043] Furthermore, the radial eccentricity of the two ends of the rotor 170 relative to the tooling housing 110 is adjusted by the tooling end cover 120 and the bearing seat 150, respectively. Therefore, in the motor eccentricity fault simulation tooling 100 of this application, after adjusting the eccentricity of the two ends of the rotor 170, when the central axis of the rotor 170 is parallel to the central axis of the stator 160 and has a certain distance, the parallel eccentricity type of the motor air gap can be simulated. Figure 4As shown in (a), when the central axis of rotor 170 intersects the central axis of stator 160 at an angle, the tilting eccentricity type of the motor air gap can be simulated. Figure 4 As shown in (b), the motor eccentricity fault simulation fixture 100 of this application can be used to simulate two different types of motor eccentricity.

[0044] Continue reading Figure 3 and combined Figures 5 to 7 , Figure 5 yes Figure 3 An enlarged view of point a in the motor eccentricity fault simulation fixture 100. Figure 6 yes Figure 3 A top view of the end cover 120 of the fixture in the motor eccentricity fault simulation fixture 100. Figure 7 yes Figure 3 A three-dimensional structural diagram of the fixture housing 110 in the motor eccentricity fault simulation fixture 100. In one embodiment, a first waist hole 121 is provided on the fixture end cover 120. The first waist hole 121 has a width direction and a length direction. The dimension of the first waist hole 121 in the length direction is greater than the dimension in the width direction. The length direction of the first waist hole 121 is perpendicular to the axial direction of the fixture housing 110.

[0045] The tooling housing 110 has a first circular hole 111 on the end face opposite to the tooling end cover 120, which can be aligned with the first waist hole 121. The tooling end cover 120 can be fastened to the tooling housing 110 by passing through the first waist hole 121 and fastening it to the first circular hole 111 with a first fastener. The first fastener can be a bolt or screw.

[0046] In this embodiment, the tooling end cap 120 is fastened to the tooling housing 110 through the first waist hole 121. Therefore, when the tooling end cap 120 moves relative to the tooling housing 110 along the length direction of the first waist hole 121 (i.e., along the radial direction of the tooling housing 110), as long as the first round hole 111 is aligned with it within the length range of the first waist hole 121, the first fastener can pass through the first waist hole 121 and be fastened in the first round hole 111, thereby realizing the tooling end cap 120 being fastened to the tooling housing 110.

[0047] Further reading Figure 6 and Figure 7 The tooling end cover 120 has multiple first waist holes 121, each with the same length direction and distributed around the circumference of the tooling end cover 120. Correspondingly, the number of first round holes 111 on the end face of the tooling housing 110 opposite to the tooling end cover 120 is the same as the number of first waist holes 121 on the tooling end cover 120. Figure 6 and Figure 7The illustration shows a case where both the number of first waist holes 121 on the tooling end cap 120 and the number of first round holes 111 on the tooling housing 110 are eight. It is understood that in other embodiments, the number of first waist holes 121 on the tooling end cap 120 and the number of first round holes 111 on the tooling housing 110 can be other values. Furthermore, in this embodiment, the length directions of each of the first waist holes 121 on the tooling end cap 120 are the same, ensuring that after the tooling end cap 120 moves a certain distance relative to the tooling housing 110 along the length direction of the first waist holes 121, each of the first waist holes 121 on the tooling end cap 120 can still be aligned one-to-one with each of the first round holes 111 on the tooling housing 110. This allows the tooling end cap 120 to still be fixed to the tooling housing 110 by the first fasteners after moving radially different distances along the tooling housing 110.

[0048] Continue reading Figure 3 and combined Figure 8 , Figure 8 yes Figure 3 The enlarged view of point b in the motor eccentricity fault simulation tooling 100 shows that, in one embodiment, the tooling adapter plate 130 has a second waist hole 131, the length direction of the second waist hole 131 is the same as the length direction of the first waist hole 121, and the bearing seat 150 has a second round hole 151 aligned with the second waist hole 131 on the end face opposite to the tooling end cover 120. The bearing seat 150 can be fastened to the second round hole 151 by passing through the second waist hole 131 with a second fastener, so as to fasten the bearing seat 150 to the tooling adapter plate 130.

[0049] Furthermore, combined with Figure 9 , Figure 9 yes Figure 3 The diagram shows a three-dimensional structure of the bearing housing 150 in the motor eccentricity fault simulation fixture 100. The fixture adapter plate 130 has multiple second oblong holes 131, all with the same length direction and distributed circumferentially along the fixture adapter plate 130. Correspondingly, the number of second circular holes 151 on the end face of the bearing housing 150 opposite to the fixture adapter plate 130 is the same as the number of second oblong holes 131 on the fixture adapter plate 130. In this embodiment, the length directions of each of the second waist holes 131 on the tooling adapter plate 130 are the same, which allows the bearing seat 150 to move a certain distance relative to the tooling adapter plate 130 along the length direction of the second waist holes 131. After the bearing seat 150 moves a certain distance relative to the tooling adapter plate 130 along the length direction of the second waist holes 131, the second waist holes 131 on the tooling adapter plate 130 can still be aligned with the second round holes 151 on the bearing seat 150. This allows the tooling adapter plate 130 to still be fixed to the bearing seat 150 by the second fastener after the bearing seat 150 moves radially along the tooling housing 110 by different distances.

[0050] See again Figure 3 and Figure 9 To achieve the initial positioning of the bearing housing 150 and the tooling adapter plate 130, a protruding ring 153 is provided on the end face of the bearing housing 150 facing the tooling adapter plate 130. The tooling adapter plate 130 is provided with an adapter plate through hole 132 corresponding to the position of the bearing housing 150, and the protruding ring 153 is accommodated in the adapter plate through hole 132.

[0051] Please combine them together Figure 3 and Figure 10 , Figure 10 yes Figure 9 A three-dimensional structural diagram of the bearing housing 150 from another perspective. The bearing housing 150 has an overlapping platform 154 at the end opposite to the tooling adapter plate 130 for mounting the bearing 152.

[0052] Continue reading Figure 1 and Figure 6 In one embodiment, the tooling end cover 120 has a measuring hole 122, which is configured for inserting a measuring tool to measure the eccentricity of the rotor 170 relative to the stator 160. The measuring tool can be a manual measuring tool such as a micrometer used for measuring gap dimensions. The measuring hole 122 is at least aligned radially with the air gap between the stator 160 and the rotor 170 in the tooling housing 110 to facilitate the insertion of the measuring tool into the air gap between the stator 160 and the rotor 170, thereby measuring the eccentricity of the rotor 170 relative to the stator 160.

[0053] Furthermore, the tooling end cover 120 has multiple measuring holes 122, and these holes are distributed circumferentially along the tooling end cover 120. In this embodiment, the multiple measuring holes 122 on the tooling end cover 120 allow for the measurement of the eccentricity of the rotor 170 relative to the stator 160 at different circumferential positions, thus obtaining more comprehensive data on the eccentricity. Figure 1 and Figure 6 The illustration shows a configuration where the number of measuring holes 122 on the tooling end cap 120 is four. It is understood that in other embodiments, the number of measuring holes 122 on the tooling end cap 120 can be other numbers. This application does not limit the specific shape of the measuring holes 122 on the tooling end cap 120; they can be as follows... Figure 1 and Figure 6 The rectangle shown can also be a circle, triangle, or polygon, etc., and its shape is based on the convenience of inserting measuring tools to measure the size of the air gap between the stator 160 and the rotor 170.

[0054] This application also provides an eccentric vibration testing system; please refer to [link / reference]. Figure 11 , Figure 11This is a structural block diagram of the eccentric vibration testing system provided in this application. The eccentric vibration testing system 10 includes a motor eccentricity fault simulation fixture 100, a dynamometer 200, a vibration sensor 300, and a controller 400.

[0055] The specific structure of the motor eccentricity fault simulation fixture 100 is described in the above embodiment.

[0056] The dynamometer 200 is fixed to the tooling adapter plate 130 and connected to the rotor 170, used to provide a load to the motor eccentricity fault simulation tooling 100. (See also...) Figure 12 , Figure 12 This is a three-dimensional assembly diagram of the motor eccentricity fault simulation fixture 100 and the dynamometer 200 in the eccentricity vibration testing system 10 of this application. Specifically, the dynamometer 200 and the fixture adapter plate 130 in the simulation fixture are fastened together by bolts and other fasteners. Figure 12 The scheme of simulating a horizontal motor using the 100-piece motor eccentricity fault simulation fixture is shown.

[0057] The vibration sensor 300 contacts the surface of the motor eccentricity fault simulation fixture 100 to collect vibration data of the fixture 100 under different degrees of eccentricity. Specifically, the vibration sensor 300 contacts the outer surface of the fixture housing 110, and the number of vibration sensors 300 can be one, two, or more. Furthermore, since this application mainly collects the radial vibration of the motor eccentricity fault simulation fixture 100, the top of the fixture housing 110 is more convenient for the installation of the vibration sensor 300 and the collection of vibration data. Therefore, the vibration sensor 300 is preferably located on... Figure 12 The radial top of the tooling housing 110, but it is also possible that it is located in other positions of the tooling housing 110.

[0058] The controller 400 is used to control the rotation of the rotor 170 of the motor eccentricity fault simulation fixture 100. Specifically, the controller 400 can be connected to the rotary transformer 140 on the fixture end cover 120, and can achieve precise control of the rotation of the rotor 170 based on the information such as the position, speed and direction of rotation of the rotor 170 detected by the rotary transformer 140.

[0059] Currently, the industry only has basic conclusions about motor vibration caused by eccentricity, without in-depth research on the quantitative manifestations of different eccentricities and their corresponding vibration data. The eccentricity vibration testing system provided in this application can actively adjust the eccentricity of the rotor 170 relative to the stator 160 (the actual eccentricity can be measured by inserting a micrometer or other manual measuring tool into the measuring hole 122 on the tooling end cover 120), and measure the vibration data under the corresponding eccentricity using a vibration sensor 300. This allows for the acquisition of vibration data corresponding to different eccentricities, and further, the generation of a relationship curve between eccentricity and vibration data. This provides guidance for confirming the mass production manufacturing accuracy and tolerances of the motor, reducing vibration problems caused by eccentricity during actual motor manufacturing.

[0060] Furthermore, in one embodiment, the eccentric vibration testing system 10 also includes a host computer 600 and a high-voltage power supply 500.

[0061] The host computer 600 is connected to the controller 400 via a low-voltage wiring harness. It sends commands to the controller 400 regarding the rotation parameters of the rotor 170 (such as the torque and speed of the rotor 170) to cause the rotor 170 to rotate under the corresponding parameters. Specifically, the position, speed, and direction of rotation of the rotor 170 measured by the rotary transformer 140 can be converted into signals and fed back to the host computer 600. The host computer 600 then sends commands to the controller 400 based on the feedback information to drive the operation of the motor eccentricity fault simulation fixture 100.

[0062] The high-voltage power supply 500 is connected to the controller 400 via a high-voltage wiring harness and is used to provide high-voltage electricity to the controller 400 to drive the rotor 170 of the motor eccentricity fault simulation fixture 100 to rotate.

[0063] Furthermore, in one embodiment, the eccentric vibration testing system 10 also includes a vibration testing front end.

[0064] The vibration test front end is electrically connected to the vibration sensor 300 and is used to power the vibration sensor 300 and store the vibration data collected by the vibration sensor 300. Therefore, the relationship between the motor eccentricity and the corresponding vibration data can be further analyzed through the vibration data stored in the vibration test front end. In other embodiments, the eccentric vibration test system 10 may not include the vibration test front end, but instead directly send the vibration data collected by the vibration sensor 300 to the host computer 600 for storage.

[0065] It should be noted that the eccentric vibration testing system 10 of this application is used to test the vibration data of the motor eccentric fault simulation fixture 100 under different degrees of eccentricity. The adjustment of different eccentricity dimensions of the motor eccentric fault simulation fixture 100 is achieved by the radial movement of the fixture end cover 120 relative to the fixture housing 110 and the radial movement of the bearing seat 150 relative to the fixture adapter plate 130. Each adjustment of the eccentricity dimension requires the dynamometer 200 to be removed from the motor eccentric fault simulation fixture 100 to complete the adjustment of the eccentricity dimension of the motor eccentric fault simulation fixture 100. After ensuring that the motor eccentric fault simulation fixture 100 reaches the accurate eccentricity dimension, the dynamometer 200 is then installed back onto the motor eccentric fault simulation fixture 100 to detect the vibration data.

[0066] The terms "first," "second," and "third" in this application are for descriptive purposes only and should not be construed as indicating the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of those features. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications will change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. A process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0067] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A tooling for simulating motor eccentricity faults, characterized in that, include: Tooling housing, tooling adapter plate, tooling end cover, bearing housing, stator and rotor; The tooling adapter plate and the tooling end cap are respectively connected to the two axial ends of the tooling housing, and the tooling adapter plate is fixed to the tooling housing, while the tooling end cap can move relative to the tooling housing in the radial direction. The bearing housing, the stator, and the rotor are all located inside the tooling housing. The bearing housing is connected to the tooling adapter plate and can move radially relative to the tooling adapter plate along the tooling housing. The stator is sleeved on the outside of the rotor and fixed to the tooling housing. One axial end of the rotor is rotatably connected to the tooling end cover, and the other end is rotatably connected to the bearing housing.

2. The motor eccentricity fault simulation fixture according to claim 1, characterized in that, The tooling end cap is provided with a first waist hole, and the end face of the tooling housing opposite to the tooling end cap is provided with a first round hole that can be aligned with the first waist hole. The tooling end cap can be fastened to the tooling housing by passing through the first waist hole and fastening it to the first round hole with a first fastener.

3. The motor eccentricity fault simulation fixture according to claim 2, characterized in that, The tooling adapter plate has a second waist hole, the length direction of the second waist hole is the same as the length direction of the first waist hole, and the end face of the bearing seat opposite to the tooling end cover has a second round hole aligned with the second waist hole. The bearing seat can be fastened to the tooling adapter plate by passing through the second waist hole and fastening it to the second round hole with a second fastener.

4. The motor eccentricity fault simulation fixture according to claim 2, characterized in that, The tooling end cap has multiple first waist holes, each with the same length direction and distributed circumferentially along the tooling end cap.

5. The motor eccentricity fault simulation fixture according to claim 3, characterized in that, The tooling adapter plate has multiple second waist holes, each second waist hole has the same length direction, and each second waist hole is distributed along the circumference of the tooling adapter plate.

6. The motor eccentricity fault simulation fixture according to claim 1, characterized in that, The tooling end cover is provided with a measuring hole, which is configured for inserting a measuring tool to measure the eccentricity of the rotor relative to the stator.

7. The motor eccentricity fault simulation fixture according to claim 6, characterized in that, The tooling end cap has multiple measuring holes, and these multiple measuring holes are distributed circumferentially along the tooling end cap.

8. An eccentric vibration testing system, characterized in that, The simulation fixture, as described in any one of claims 1-7, further includes: A dynamometer, fixed to the tooling adapter plate and connected to the rotor, is used to provide a load to the motor eccentricity fault simulation tooling. A vibration sensor is in contact with the surface of the motor eccentricity fault simulation fixture to collect vibration data of the motor eccentricity fault simulation fixture when it is running under different degrees of eccentricity. A controller is used to control the rotation of the rotor of the motor eccentricity fault simulation fixture.

9. The eccentric vibration testing system according to claim 8, characterized in that, The eccentric vibration testing system also includes: The host computer is connected to the controller via a low-voltage wiring harness and is used to send instructions to the controller regarding the rotor rotation parameters so that the rotor rotates under the specified rotation parameters. A high-voltage power supply, connected to the controller via a high-voltage wiring harness, is used to provide high-voltage electricity to the controller to drive the rotor of the motor eccentricity fault simulation tooling to rotate.

10. The eccentric vibration testing system according to claim 8, characterized in that, The eccentric vibration testing system also includes: The vibration test front end is electrically connected to the vibration sensor and is used to power the vibration sensor and store the vibration data collected by the vibration sensor.

Images