Device for measuring discharge damage of bearing material

Abstract

The invention relates to the technical field of motor bearing damage measurement, and discloses a device for measuring discharge damage of a bearing material, the device comprises an adjustable-speed motor, a test disc, a test ball, a pressure loading mechanism and a pulse power supply, the test disc is connected with the power output end of the adjustable-speed motor, the test ball is arranged on the test disc, and the pulse power supply is connected with the pressure loading mechanism. An oil film is arranged between the test ball and the test disc, the pressure loading mechanism is connected with the test ball, the pressure loading mechanism is suitable for applying pressure to the test ball and the test disc, and the pulse power supply is electrically connected with the test ball to provide pulse voltage for the test ball, the device further comprises a thickness detection mechanism used for detecting the thickness of the oil film and an oscillograph used for displaying a pulse voltage signal curve. The device has the beneficial effects that the structure of the device for measuring the discharge damage of the bearing material is simplified, and the measurement precision of the device for measuring the discharge damage of the bearing material is improved.

Description

Technical Field

[0001] The present application relates to the technical field of motor bearing damage measurement, and in particular to a device for measuring discharge damage of bearing materials. Background Art

[0002] The development and promotion of new energy electric vehicles is an important measure to control air pollution, alleviate environmental pressure and solve the global energy crisis. As new energy electric vehicle motors develop towards high speed, high torque and high energy efficiency, the bearings of the motors have an increasingly greater impact on the performance of the motors. During the operation of the motors, high-amplitude shaft voltages are generated, which in turn generate shaft currents, causing discharge damage and deformation of the bearings. In severe cases, the bearings fail prematurely. Therefore, it is usually necessary to simulate the bearing materials and study the discharge damage mechanism of the bearing materials. However, in the related technologies, the test device for studying the discharge damage behavior of motor bearings has a complex structure and low measurement accuracy. Summary of the invention

[0003] The present application provides a device for measuring discharge damage of bearing materials, which solves the technical problems of complex structure and low measurement accuracy of the test device for motor bearing discharge damage behavior, and achieves the technical effect of simplifying the structure of the device for measuring discharge damage of bearing materials and improving the measurement accuracy of the device for measuring discharge damage of bearing materials.

[0004] In order to achieve the above objectives, the main technical solutions adopted in this application include:

[0005] In a first aspect, an embodiment of the present application provides a device for measuring discharge damage of bearing materials, comprising a speed regulating motor, a test disc, a test ball, a pressure loading mechanism and a pulse power supply, wherein the test disc is connected to the power output end of the speed regulating motor, the test ball is arranged on the test disc, an oil film is arranged between the test ball and the test disc, the pressure loading mechanism is connected to the test ball, the pressure loading mechanism is suitable for applying pressure to the test ball and the test disc, the pulse power supply is electrically connected to the test ball to provide a pulse voltage for the test ball, wherein the device also includes a thickness detection mechanism for detecting the thickness of the oil film and an oscilloscope for displaying a pulse voltage signal curve.

[0006] The device for measuring discharge damage of bearing materials proposed in the embodiment of the present application interconnects the speed regulating motor, the test disc, the test ball and the pressure loading mechanism, which greatly simplifies the structure of the device for measuring discharge damage of bearing materials. The device for measuring discharge damage of bearing materials also includes a thickness detection mechanism for detecting the thickness of the oil film and an oscilloscope mechanism for displaying the pulse voltage signal curve, which can detect the change of the oil film thickness in real time and accurately, thereby improving the measurement efficiency of the device for measuring discharge damage of bearing materials and providing more accurate data support for studying the formation mechanism of discharge damage of bearing materials.

[0007] Optionally, the device further comprises a ball clamp, which is suitable for clamping a test ball, and the test ball is connected to the pressure loading mechanism through the ball clamp.

[0008] The ball clamp is suitable for clamping the test ball. It can stably clamp the test ball to prevent it from moving or offsetting during the test, thereby ensuring the accuracy and repeatability of the test results. It can also meet the needs of different working conditions, expand the application scope of the device for measuring discharge damage of bearing materials, improve the measurement efficiency of the device for measuring discharge damage of bearing materials, and provide more accurate data support for studying the formation mechanism of discharge damage of bearing materials.

[0009] Optionally, the device further comprises a disc fixture, the disc fixture is connected to the power output end of the speed regulating motor via a transmission member, and the test disc is fixed to the disc fixture.

[0010] The test disc is fixed on the disc clamp, which can stably clamp the test ball to prevent it from moving or offsetting during the test, thereby ensuring the accuracy and repeatability of the test results. It can also meet the needs of different working conditions, expand the application scope of the device for measuring discharge damage of bearing materials, improve the measurement efficiency of the device for measuring discharge damage of bearing materials, and provide more accurate data support for studying the formation mechanism of discharge damage of bearing materials.

[0011] Optionally, the device includes a bracket, the bracket includes a base and a first rod, the first rod is arranged on the base and extends upward, the base is equipped with a speed regulating motor, the upper end of the first rod is connected to the pressure loading mechanism, the first rod is equipped with a thickness detection mechanism, and the thickness detection mechanism is constructed as an oil film thickness optical measuring instrument.

[0012] The first rod is equipped with a thickness detection mechanism, which is constructed as an oil film thickness optical measuring instrument. The oil film thickness optical measuring instrument adopts a non-contact measurement method and can perform measurements without direct contact with the surface of the object being measured, thereby avoiding wear caused by contact, protecting the surface of the object being measured, and ensuring the accuracy and stability of the measurement.

[0013] Optionally, the device further comprises a lubricating oil box, which is arranged around the outer circumference of the disc fixture, and the upper end of the lubricating oil box protrudes from the upper surface of the test disc.

[0014] The lubricating oil box is arranged around the outer circumference of the disc fixture, and the upper end of the lubricating oil box protrudes from the upper surface of the test disc. It can simulate the working conditions of the motor under different oil film thickness conditions, expand the application scope of the device for measuring discharge damage of bearing materials, improve the efficiency of the device for measuring discharge damage of bearing materials, and provide more accurate data support for studying the formation mechanism of discharge damage of bearing materials.

[0015] Optionally, the power output end of the speed regulating motor is constructed as a power output shaft, a conductive ring is provided on the power output shaft, the pulse power supply has a first input end and a first output end, the first input end is connected to the ball clamp, and the first output end is connected to the conductive ring.

[0016] A conductive ring is arranged on the power output shaft, the first input end is connected to the spherical clamp, and the first output end is connected to the conductive ring. The conductive ring provides a low-impedance current path to guide the current that may originally enter the speed control motor through the power output shaft of the speed control motor back to the pulsating power supply, thereby avoiding the current from directly entering the speed control motor, reducing the probability of failure of the speed control motor, and improving the stability and reliability of the speed control motor operation, thereby improving the stability and reliability of the operation of the device for measuring the discharge damage of the bearing material, and providing more accurate data support for studying the formation mechanism of discharge damage of the bearing material.

[0017] Optionally, the ball clamp includes a clamp body and a connecting terminal, a recessed portion for accommodating the test ball is provided below the clamp body, the connecting terminal is provided on the clamp body and connected to the first input end, and the clamp body is constructed as a conductive member.

[0018] On the one hand, a recessed portion for accommodating the test ball is provided below the fixture body, which not only enables the test ball to be firmly placed in the ball fixture and reduces the probability of wear or damage caused by improper contact between the fixture body and the test ball, but also, on the other hand, a connecting terminal is provided on the fixture body and connected to the first input terminal. The fixture body is constructed as a conductive part, which can improve the smooth flow of current through the test ball and the ball fixture, thereby improving the stability and reliability of the operation of the device for measuring discharge damage to bearing materials.

[0019] Optionally, the device further comprises a friction sensor, which is suitable for detecting the friction between the test ball and the test disc.

[0020] The friction sensor can monitor the change of friction between the test ball and the test disc in real time, detect and record abnormal conditions in time, and provide a reliable basis for subsequent data analysis and processing. By testing and evaluating the discharge damage and friction performance of different bearing materials through the friction sensor, bearing materials with better performance and better resistance to discharge damage can be selected, providing strong support for the selection of bearing materials and more accurate data support for studying the formation mechanism of discharge damage in bearing materials.

[0021] Optionally, an insulating layer is further provided between the friction sensor and the ball fixture.

[0022] Since the pulse power supply will discharge the test ball during the simulated discharge process, and an insulating layer is provided between the friction sensor and the ball fixture layer, it can prevent current from entering the friction sensor, reduce the probability of the friction sensor being damaged, and improve the stability and reliability of the operation of the device for measuring discharge damage to bearing materials.

[0023] Optionally, the device further comprises a force detection mechanism for detecting the pressure applied by the pressure loading mechanism on the test ball.

[0024] By detecting the pressure between the test disc and the test ball, it is possible to prevent the pressure loading mechanism from applying too much pressure to the ball, thereby preventing unnecessary damage to the device. This reduces the probability of failure of the device for measuring discharge damage to bearing materials and improves the operating stability and reliability of the device for measuring discharge damage to bearing materials.

[0025] In a second aspect, an embodiment of the present application also provides a method for measuring discharge damage of bearing materials, which is applied to the device for measuring discharge damage of bearing materials described in any one of the embodiments of the present application, and the method comprises: driving the test disc to rotate to a preset speed; controlling the pressure loading mechanism to generate pressure between the test disc and the test ball, and detecting the friction between the test ball and the test disc; allowing current to flow through the test disc and the test ball; and detecting the oil film thickness between the test disc and the test ball.

[0026] A method for measuring discharge damage of bearing materials, applied to the device for measuring discharge damage of bearing materials described in any one of the embodiments of the present application, can detect changes in oil film thickness in real time and accurately, improve the measurement efficiency of the device for measuring discharge damage of bearing materials, and provide more accurate data support for studying the formation mechanism of discharge damage of bearing materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 A schematic diagram of the structure of a device for measuring discharge damage of bearing materials provided in one embodiment of the present application;

[0029] Figure 2 A flat head bolt according to an embodiment of the present application is shown;

[0030] Figure 3This is a partial enlarged view of the ball clamp provided in one embodiment of the present application.

[0031] [Description of Reference Numerals]

[0032] Device 100; speed regulating motor 110; transmission member 111; test disc 120; test ball 130; pressure loading mechanism 150; pulse power supply 160; first input terminal 161; first output terminal 162; thickness detection mechanism 170; oscilloscope mechanism 180; ball clamp 190; disc clamp 200; flat head bolt 210; lubricating oil box 220; conductive ring 230; friction force sensor 240; force detection mechanism 250; insulating layer 260; connecting terminal 270; clamp body 280; bracket 290; base 291; first rod 292; recessed portion 300. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0034] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0035] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0038] The term "multiple" as used in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple sheets" refers to more than two sheets (including two sheets).

[0039] The development and promotion of new energy electric vehicles is an important measure to control air pollution, alleviate environmental pressure and solve the global energy crisis. With the development of new energy electric vehicle motors towards high speed, high torque and high energy efficiency, as well as the application of high voltage platforms such as 800V, high-amplitude shaft voltage will be generated during the operation of the motor, and then shaft current will be generated, causing discharge damage and deformation to the bearing, and in severe cases, premature failure of the bearing. The shaft voltage breaks through the lubricating oil film and forms a current. When the current passes through the rolling element, it produces a phenomenon similar to arc welding, generating a large current density on a small contact surface, gathering a lot of heat, causing the material to melt and the contact area material to break. Spherical particles will also form accumulation, and wear and surface peeling will occur under the action of long-term cutting force, ultimately reducing the service life of the bearing. The factors of bearing discharge damage behavior are essentially to affect the change of lubricating oil film thickness, produce different discharge breakdown behaviors, and ultimately lead to different surface damage and deformation.

[0040] However, in the relevant technologies, the test benches for discharge damage behavior of new energy vehicle motor bearings are mainly focused on building small platforms to simulate the actual operating conditions of motor bearings, and do not involve the generation mechanism of discharge damage of bearing materials, as well as the mapping mechanism between lubricating oil film thickness and friction. Some have relatively complex structures, and require high installation accuracy for various parts or devices, and are unable to directly test the distribution law of lubricating oil film in bearings. Some have not only complex structures, but also no obvious fluctuation behavior in the early stage of discharge damage to bearings. Therefore, it is impossible to accurately judge the state of bearing electrical corrosion.

[0041] In view of this, in order to simplify the structure of the device for measuring discharge damage of bearing materials and at the same time improve the measurement accuracy of the device for measuring discharge damage of bearing materials, an embodiment of the present application provides a device for measuring discharge damage of bearing materials, including a speed regulating motor, a test disc, a test ball, a pressure loading mechanism and a pulse power supply.

[0042] The test disc is connected to the power output end of the speed control motor, the test ball is arranged on the test disc, an oil film is arranged between the test ball and the test disc, the pressure loading mechanism is connected to the test ball, the pressure loading mechanism is suitable for applying pressure to the test ball and the test disc, and the pulse power supply is electrically connected to the test ball to provide a pulse voltage to the test ball, wherein the device also includes a thickness detection mechanism for detecting the thickness of the oil film and an oscilloscope mechanism for displaying the pulse voltage signal curve.

[0043] In the above scheme, the test disc is connected to the power output end of the speed regulating motor so that the test disc can rotate. The oil film thickness detection mechanism is used to detect the thickness of the oil film, and then the thickness of the oil film between the test disc and the test ball can be obtained. The oscilloscope mechanism is used to display the pulse voltage signal curve. In this way, the thickness of the oil film between the test disc and the test ball can be directly measured by using a relatively simple structure of a bearing material discharge damage device.

[0044] The test ball disclosed in the embodiment of the present application may be a motor bearing ball.

[0045] The test disc disclosed in the embodiment of the present application may include an inner surface of the outer ring of the bearing that is contacted by the motor bearing ball.

[0046] The oil film disclosed in the embodiment of the present application may be a lubricating oil film used between a motor bearing ball and an inner surface of a bearing outer ring with which the motor bearing ball contacts.

[0047] For the convenience of description, the following embodiments are described by taking a device for measuring discharge damage of a bearing material disclosed in an embodiment of the present application as an example.

[0048] Please refer to Figures 1 to 3 , Figure 1 A schematic diagram of the structure of a device 100 for measuring discharge damage of a bearing material provided in one embodiment of the present application; Figure 2 The flat head bolt 210 of the embodiment of the present application is shown; Figure 3 This is a partial enlarged view of the ball clamp 200 provided in one embodiment of the present application.

[0049] In this embodiment, the device 100 for measuring discharge damage of bearing materials includes a speed regulating motor 110, a test disc 120, a test ball 130, a pressure loading mechanism 150 and a pulse power supply 160. The test disc 120 is connected to the power output end of the speed regulating motor 110. The test ball 130 is arranged on the test disc 120. An oil film is arranged between the test ball 130 and the test disc 120. The pressure loading mechanism 150 is connected to the test ball 130. The pressure loading mechanism 150 is suitable for applying pressure to the test ball 130 and the test disc 120. The pulse power supply 160 is electrically connected to the test ball 130 to provide a pulse voltage for the test ball 130. The device 100 also includes a thickness detection mechanism 170 for detecting the thickness of the oil film and an oscilloscope mechanism 180 for displaying a pulse voltage signal curve.

[0050] The speed regulating motor 110 is a motor that can adjust the speed as needed, and the rotation speed of the speed regulating motor 110 can be adjusted accordingly according to the needs of the device 100. The test disc 120 is connected to the power output end of the speed regulating motor 110, that is, the speed regulating motor 110 can drive the test disc 120 to rotate, and the rotation speed of the test disc 120 can also be adjusted according to the needs. The rotation speed of the test disc 120 is adjustable, and it can simulate the working conditions of the motor bearing at different speeds. In one device 100, it can simulate multiple working conditions of the motor, expand the scope of application of the device 100 for measuring the discharge damage of the bearing material, and improve the test efficiency of the device 100 for measuring the discharge damage of the bearing material. Moreover, the speed of the test disc 120 is adjustable, and it can simulate different rotation speeds of the motor bearing, so that the test results are more representative and accurate. The test ball 130 is arranged on the test disc 120, that is, the test ball 130 is in contact with the test disc 120. When the test disc 120 rotates, mutual friction will occur between the test disc 120 and the test ball 130, thereby simulating the working condition of friction between the motor bearing ball and the inner surface of the motor bearing outer ring.

[0051] An oil film is provided between the test ball 130 and the test disc 120, which is used to simulate a lubricating oil film between the test disc 120 and the test ball 130. The pressure loading mechanism 150 is connected to the test ball 130, and the pressure loading mechanism 150 can apply pressure between the test ball 130 and the test disc 120. When the pressure between the test disc 120 and the test ball 130 changes, the friction between the test disc 120 and the test ball 130 will also change, so that the friction between the bearing ball and the outer ring of the bearing under different working conditions or different models can be simulated, thereby expanding the application scope of the device 100 for measuring discharge damage of bearing materials and improving the test efficiency of the device 100 for measuring discharge damage of bearing materials.

[0052] During the operation of the motor, the shaft voltage will break through the oil film to form shaft current, thereby causing damage to the bearing. The pulse power supply 160 is electrically connected to the test ball 130 to provide a pulse voltage to the test ball 130, which can simulate the shaft voltage generated during the operation of the motor, thereby providing conditions for simulating the discharge damage behavior of the motor bearing. For example, the magnitude of the pulse voltage can be adjusted according to demand.

[0053] The thickness detection mechanism 170 is used to detect the thickness of the oil film, and the thickness detection mechanism 170 can detect the thickness of the oil film in real time. Exemplarily, the thickness detection mechanism 170 can be an oil film thickness optical measuring instrument, which is used to detect the oil film thickness between the test disc 120 and the test ball 130 in real time. The oil film thickness optical measuring instrument can provide high-precision oil film thickness measurement data, which is of great significance for accurately evaluating the discharge damage behavior of bearing materials and provides a reliable basis for the performance evaluation of bearing materials. Moreover, the oil film thickness optical measuring instrument adopts a non-contact measurement method, which will not cause any damage to the test disc 120 and the test ball 130 and the oil film between the test disc 120 and the test ball 130, thereby realizing non-destructive testing. This helps to maintain the integrity of the test disc 120, the test ball 130 and the oil film, avoids the introduction of additional damage factors due to physical contact during the measurement process, and can more realistically simulate the working conditions of the discharge damage of the bearing material, and provide more real and reliable data for studying the discharge damage mechanism of the bearing material. The oil film thickness optical measuring instrument can also intuitively display the morphology and distribution of the oil film, providing more intuitive and rich visual information for analyzing the discharge damage mechanism of bearing materials, which helps to study the discharge damage mechanism of bearing materials more comprehensively.

[0054] The oscilloscope mechanism 180 is used to display the pulse voltage signal curve. The oscilloscope mechanism 180 can display the pulse voltage signal in the circuit in a graphical form, such as a sine wave, square wave, pulse wave, etc., so that the voltage change during the discharge process is intuitively visible. Through the oscilloscope mechanism 180, the voltage fluctuation during the discharge process can be monitored in real time, and the instantaneous voltage change can be captured, which is crucial for analyzing the formation mechanism of discharge damage. During the experiment, the experimental conditions, such as voltage, current, discharge time, etc., can be adjusted according to the waveform displayed by the oscilloscope mechanism 180 to optimize the discharge process and reduce unnecessary damage. For complex discharge waveforms, the oscilloscope mechanism 180 can also provide phase information to help analyze the phase relationship between the discharge waveform and bearing material damage.

[0055] Specifically, the interconnection of the speed regulating motor 110, the test disc 120, the test ball 130 and the pressure loading mechanism 150 greatly simplifies the structure of the device 100 for measuring discharge damage of bearing materials. The device 100 for measuring discharge damage of bearing materials includes a thickness detection mechanism 170 for detecting the thickness of the oil film and an oscilloscope mechanism 180 for displaying the pulse voltage signal curve. It can detect the change of the oil film thickness in real time and accurately, improves the measurement efficiency of the device 100 for measuring discharge damage of bearing materials, and provides more accurate data support for studying the formation mechanism of discharge damage of bearing materials.

[0056] Please refer to Figures 1 to 3 In this embodiment, the device 100 further includes a ball clamp 190 , which is suitable for clamping the test ball 130 , and the test ball 130 is connected to the pressure loading mechanism 170 via the ball clamp 190 .

[0057] The test ball 130 is clamped by the ball clamp 190, and the ball clamp 190 is connected to the pressure loading mechanism 150, that is, the test ball 130 is indirectly connected to the pressure loading mechanism 150, and the pressure loading mechanism 150 applies force to the ball clamp 190, and then the force is transmitted to the test ball 130 through the ball clamp 190, thereby controlling the pressure between the test ball 130 and the test disc 120. The ball clamp 190 can stably clamp the test ball 130 to prevent it from moving or offsetting during the test process, thereby ensuring the accuracy and repeatability of the test results. Through clamping, external interference caused by the non-fixed position of the ball, such as air flow, vibration, etc., can be reduced, and these interferences may affect the measurement results of discharge damage. The design of the ball clamp 190 suitable for clamping the test ball 130 can usually ensure the alignment accuracy of the test ball 130 and the discharge device 100, so that the discharge process can accurately act on the surface of the ball and reduce errors. Moreover, the stable clamping can also prevent the test ball 130 from suddenly falling off or getting out of control during the discharge process, causing other damages to the device 100.

[0058] In addition, the ball clamp 190 is suitable for clamping the test ball 130, and the clamping size of the ball clamp 190 is adjustable, that is, the ball clamp 190 can clamp the test ball 130 of different sizes. When the test ball 130 needs to be replaced or replaced, only the test ball 130 needs to be replaced or replaced, without replacing the ball clamp 190, so that the device 100 can meet the needs of different working conditions, expand the scope of application of the device 100 for measuring discharge damage of bearing materials, and improve the measurement efficiency of the device 100 for measuring discharge damage of bearing materials.

[0059] Specifically, the ball clamp 190 is suitable for clamping the test ball 130, and can stably clamp the test ball 130 to prevent it from moving or shifting during the test, thereby ensuring the accuracy and repeatability of the test results, and can meet the needs of different working conditions, thereby expanding the scope of application of the device 100 for measuring discharge damage to bearing materials, and improving the measurement efficiency of the device 100 for measuring discharge damage to bearing materials, providing more accurate data support for studying the formation mechanism of discharge damage to bearing materials.

[0060] Please refer to Figures 1 to 3 In this embodiment, the device 100 further includes a disc fixture 200 , which is connected to the power output end of the speed regulating motor 110 via a transmission member 111 , and the test disc 120 is fixed to the disc fixture 200 .

[0061] The disc clamp 200 is connected to the power output end of the speed regulating motor 110, that is, the speed regulating motor 110 can drive the disc clamp 200 to rotate, the disc is fixed to the disc clamp 200, and the power output end of the speed regulating motor 110 is connected to the transmission member 111. The transmission member 111 drives the disc clamp 200 to rotate, and then drives the disc to rotate to simulate the motor rotation process.

[0062] The disc clamp 200 can stably clamp the test disc 120 to prevent it from moving or shifting during the test process, thereby ensuring the accuracy and repeatability of the test results. Through clamping, external interference caused by the non-fixed position of the disc, such as air flow, vibration, etc., can be reduced, and these interferences may affect the measurement results of discharge damage. The disc is fixed on the disc clamp 200 to ensure the alignment accuracy of the test sphere 130 and the discharge device 100, so that the discharge process can accurately act on the surface of the sphere and reduce errors. Moreover, stable clamping can also prevent the test disc 120 from suddenly falling off or losing control during the discharge process, causing other damage to the device 100.

[0063] Moreover, the clamping size of the disc clamp 200 is adjustable, that is, the disc clamp 200 can clamp test discs 120 of different sizes. When the test disc 120 needs to be replaced or replaced, only the test disc 120 needs to be replaced or replaced, without replacing the disc clamp 200, so that the device 100 can meet the needs of different working conditions, expand the scope of application of the device 100 for measuring discharge damage of bearing materials, and improve the measurement efficiency of the device 100 for measuring discharge damage of bearing materials.

[0064] Specifically, the test disc 120 is fixed to the disc clamp 200, and can stably clamp the test ball 130 to prevent it from moving or shifting during the test, thereby ensuring the accuracy and repeatability of the test results, and being able to meet the needs of different working conditions, thereby expanding the scope of application of the device 100 for measuring discharge damage to bearing materials, and improving the measurement efficiency of the device 100 for measuring discharge damage to bearing materials, providing more accurate data support for studying the formation mechanism of discharge damage to bearing materials.

[0065] Please refer to Figures 1 to 3 In this embodiment, the device 100 includes a bracket 290, the bracket 290 includes a base 291 and a first rod 292, the first rod 292 is arranged on the base 291 and extends upward, the base 291 is installed with a speed regulating motor 110, the upper end of the first rod 292 is connected to the pressure loading mechanism 150, the first rod 292 is installed with a thickness detection mechanism 150, and the thickness detection mechanism 150 is constructed as an oil film thickness optical measuring instrument.

[0066] The first rod 292 is disposed on the base 291, and the length direction of the first rod 292 is parallel to the vertical direction. The base 291 is provided with a speed regulating motor 110, and the speed regulating motor 110 can be fixedly mounted on the base 291, for example, by fixing the speed regulating motor 292 on the base 291 in a detachable connection manner such as bolts, or by fixing the speed regulating motor 292 on the base 291 in a fixed connection manner such as welding. The upper end of the first rod 291 is connected to the pressure loading mechanism 150, and the lower end of the first rod 291 is fixedly connected to the base 292, that is, along the vertical direction, the pressure loading mechanism 150 is disposed above the base 292.

[0067] Specifically, the first rod 292 is equipped with a thickness detection mechanism 150, which is constructed as an oil film thickness optical measuring instrument. The oil film thickness optical measuring instrument adopts a non-contact measurement method, and can measure without direct contact with the surface of the object to be measured, thereby avoiding wear caused by contact, protecting the surface of the object to be measured, and ensuring the accuracy and stability of the measurement. In addition, the oil film thickness optical measuring instrument is based on infrared filter technology or light reflectivity test method, and the oil film thickness optical measuring instrument can achieve high-precision oil film thickness measurement. It can quickly respond and accurately capture small changes in oil film thickness, providing reliable data support for quality control and production processes.

[0068] Please refer to Figures 1 to 3 In this embodiment, the disc fixture 200 and the test disc 120 are fixedly connected by a flat head bolt 210 .

[0069] The disc fixture 200 and the test disc 120 are fixedly connected by a flat-head bolt 210. On the one hand, the flat-head bolt 210 provides a stable mechanical connection to ensure that the test disc 120 will not loosen or shift due to vibration or external force during the measurement process. This stable connection is crucial to ensure the accuracy and reliability of the measurement results, and provides more accurate data support for studying the formation mechanism of discharge damage in bearing materials. On the other hand, compared with other connection methods, such as welding or bonding, it is more convenient to use the flat-head bolt 210 to fix the disc fixture 200 and the test disc 120. When installing, you only need to pass the bolt through the preset hole and tighten it. When disassembling, you can easily separate the two by loosening the bolt. This convenience helps to improve work efficiency and reduce the risk of damage caused by frequent disassembly and assembly. Another significant advantage of the flat-head bolt 210 connection is strong adaptability. By adjusting the number and position of the bolts, it can flexibly adapt to test discs 120 of different sizes, shapes and weights. This flexibility enables the same set of fixtures to be used for a variety of measurement tasks, reducing equipment costs and improving usage efficiency.

[0070] Please refer to Figures 1 to 3 In this embodiment, the device 100 further includes a lubricating oil box 220 , which is disposed around the outer circumference of the disc fixture 200 , and the upper end of the lubricating oil box 220 protrudes from the upper surface of the test disc 120 .

[0071] The lubricating oil box 220 is arranged around the outer circumference of the disc fixture 200, and the test disc 120 is fixed by the disc fixture 200, that is, the lubricating oil box 220 can envelop the test disc 120. The lubricating oil is arranged inside the lubricating oil box 220, so that the upper surface of the test disc 120 is covered with an oil film, so that there is always an oil film between the test ball 130 and the test disc 120. Moreover, since the lubricating oil box 220 can envelop the test disc 120, and the upper end of the lubricating oil box 220 protrudes from the upper surface of the test disc 120, that is, along the direction perpendicular to the test disc 120, the lubricating oil box 220 has a certain height, and oil films of different thicknesses can be set between the test ball 130 and the test disc 120. The device 100 can simulate the working conditions of the motor under different oil film thickness conditions, expand the scope of application of the device 100 for measuring discharge damage of bearing materials, improve the efficiency of the device 100 for measuring discharge damage of bearing materials, and provide effective data support for measuring the discharge damage mechanism of bearing materials.

[0072] Please refer to Figures 1 to 3 In this embodiment, the power output end of the speed regulating motor 110 is constructed as a power output shaft, and a conductive ring 230 is provided on the power output shaft. The first input end 161 of the pulse power supply is connected to the ball clamp 190, and the first output end 162 of the pulse power supply 160 is connected to the conductive ring 230.

[0073] The power output end of the speed regulating motor 110 is constructed as a power output shaft, which is connected to the disc clamp 200. A conductive ring 230 is also provided on the power output shaft. The conductive ring 230 is connected to the first output end 162 of the pulse power supply through an electric wire, and the first input end 161 of the pulse power supply is connected to the ball clamp 190. That is to say, in the process of the device 100 simulating the discharge of the motor bearing, the current of the pulse power supply 160 is input to the ball clamp 190 through the first output end 162, and then input to the test ball 130 through the ball clamp 190, and then through the effect of voltage breakdown, the current is input from the test ball 130 to the test disc 120. Since the power output shaft of the speed regulating motor 110 is connected to the test disc 120 and a conductive ring 230 is provided on the power output shaft, the current can be input from the test disc 120 to the power output shaft and then enter the conductive ring 230, and then enter the first input end 161 of the pulse power supply 160 from the conductive ring 230, thereby completing the discharge behavior of the simulated bearing voltage.

[0074] Furthermore, a conductive ring 230 is provided on the power output shaft, the first input terminal 161 of the pulse power supply 160 is connected to the spherical clamp 190, and the first output terminal 162 of the pulse power supply 160 is connected to the conductive ring 230. The conductive ring 230 provides a low-impedance current path to guide the current that may originally enter the speed control motor 110 through the power output shaft of the speed control motor 110 back to the pulsating power supply, thereby avoiding the current from directly entering the speed control motor 110, reducing the probability of failure of the speed control motor 110, and improving the stability and reliability of the operation of the speed control motor 110, thereby improving the stability and reliability of the operation of the device 100 for measuring discharge damage to bearing materials, and providing more accurate data support for studying the formation mechanism of discharge damage to bearing materials.

[0075] Please refer to Figures 1 to 3 In this embodiment, the ball clamp 190 includes a clamp body 280 and a connecting terminal 270. A recessed portion 300 for accommodating the test ball 130 is provided below the clamp body 280. The connecting terminal 270 is provided on the clamp body 280 and connected to the first input end 161. The clamp body 280 is constructed as a conductive member.

[0076] The ball clamp 190 includes a clamp body 280 and a connection terminal 270. The connection terminal 270 is arranged on the clamp body 280 and connected to the first input terminal 161 of the pulse power supply. A recessed portion 300 is arranged below the clamp body 280 and is used to clamp and fix the test ball 130. The clamp body 280 is constructed as a conductive member, that is, current can flow through the connection terminal 270, the clamp body 280 and the test ball 130, thereby completing a current closed loop.

[0077] Specifically, a recessed portion 300 for accommodating the test sphere 130 is provided below the fixture body 280, and a connecting terminal 270 is provided on the fixture body 280 and connected to the first input terminal 161. The fixture body 280 is constructed as a conductive member. On the one hand, a recessed portion 300 for accommodating the test sphere 130 is provided below the fixture body 280, which not only enables the test sphere 130 to be firmly placed in the sphere fixture 190 and reduces the probability of wear or damage caused by improper contact between the fixture body 280 and the test sphere 130, but also on the other hand, the connecting terminal 270 is provided on the fixture body 280 and connected to the first input terminal 161. The fixture body 280 is constructed as a conductive member, which can improve the smooth flow of current through the test sphere 130 and the sphere fixture 190, thereby improving the stability and reliability of the operation of the device 100 for measuring discharge damage of bearing materials.

[0078] Please refer to Figures 1 to 3 In this embodiment, the device 100 further includes a friction sensor 240 , which is suitable for detecting the friction between the test ball 130 and the test disc 120 .

[0079] Since the study of the discharge damage mechanism of bearing materials is related to pulse voltage (instantaneous voltage for breaking through the oil film), oil film thickness and friction (friction between the test ball and the test disc), the friction sensor 240 can be used to more accurately detect the friction between the test ball 130 and the test disc 120.

[0080] The friction sensor 240 can accurately measure the friction between the test ball 130 and the test disc 120, so as to quantitatively analyze the specific impact of discharge damage on the friction performance of the bearing material. This quantitative analysis helps to more accurately evaluate the degree and consequences of discharge damage. Moreover, during the simulated discharge process, the friction sensor 240 can monitor the changes in friction between the test ball 130 and the test disc 120 in real time, promptly detect and record abnormal conditions, and provide a reliable basis for subsequent data analysis and processing. By testing and evaluating the discharge damage and friction performance of different bearing materials using the friction sensor 240, bearing materials with better performance and better resistance to discharge damage can be screened out, providing strong support for the selection of bearing materials and providing more accurate data support for studying the formation mechanism of discharge damage in bearing materials.

[0081] Please refer to Figures 1 to 3 In this embodiment, an insulating layer 260 is further provided between the friction sensor and the ball fixture 190 .

[0082] Since the pulse power supply 160 will discharge the test ball 130 during the simulated discharge process, and an insulating layer 260 is arranged between the friction sensor and the ball fixture 190, it can prevent current from entering the friction sensor, reduce the probability of the friction sensor being damaged, and improve the stability and reliability of the operation of the device 100 for measuring discharge damage to bearing materials.

[0083] Please refer to Figures 1 to 3 In this embodiment, the device 100 further includes a force detection mechanism 250 for detecting the pressure applied by the pressure loading mechanism 150 on the test ball 130 .

[0084] The force detection mechanism 250 is used to detect the pressure on the test ball 130. During the simulated discharge process, the force detection mechanism 250 can measure the pressure between the test ball 130 and the test disc 120 in real time. On the one hand, by detecting the pressure between the test disc 120 and the test ball 130, it can prevent the pressure loading mechanism 150 from overloading the ball, thereby causing unnecessary damage to the device 100, thereby reducing the probability of failure of the device 100 for measuring discharge damage to bearing materials, and improving the operating stability and reliability of the device 100 for measuring discharge damage to bearing materials. On the other hand, the force detection mechanism 250 detects the pressure between the test ball 130 and the test disc 120 in real time, which can provide sufficient data support for studying the discharge behavior mechanism of bearing materials.

[0085] The embodiment of the present application also provides a method for measuring discharge damage of bearing materials, characterized in that the device 100 for measuring discharge damage of bearing materials described in any one of the embodiments of the present application is applied, and the method includes: driving the test disc 120 to rotate to a preset speed; controlling the pressure loading mechanism 150 to generate pressure between the test disc 120 and the test ball 130, and detecting the friction between the test ball 130 and the test disc 120; allowing current to flow through the test disc 120 and the test ball 130; and detecting the oil film thickness between the test disc 120 and the test ball 130.

[0086] The speed regulating motor 110 can be used to rotate the test disc 120 to a preset speed, that is, the speed required to be simulated in the experiment, and then the pressure loading mechanism 150 can be controlled to generate pressure between the test disc 120 and the test ball 130. Then, the friction sensor 240 can be used to detect the friction between the test ball 130 and the test disc 120. The current generated by the pulse power supply 160 flows through the test disc 120 and the test ball 130. The oscilloscope mechanism 180 displays the voltage of the pulse power supply 160 and then detects the oil film thickness between the test disc 120 and the test ball 130. Then, the relationship between the friction between the test ball 120 and the test disc 130, the pulse voltage at both ends of the test disc 120 and the test ball 130, and the oil film thickness between the test disc 120 and the test ball 130 is analyzed.

[0087] Specifically, a method for measuring discharge damage of bearing materials is applied to the device 100 for measuring discharge damage of bearing materials described in any one of the embodiments of the present application, which can detect the change of oil film thickness in real time and accurately, thereby improving the measurement efficiency of the device 100 for measuring discharge damage of bearing materials, and providing more accurate data support for studying the formation mechanism of discharge damage of bearing materials.

[0088] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0089] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0090] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

[0091] Although the embodiments of the present application have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A device for measuring discharge damage of bearing materials, characterized in that: include: Speed ​​regulating motor; A test disc connected to the power output end of the speed regulating motor; A test ball is arranged on the test disc, and an oil film is arranged between the test ball and the test disc; A pressure loading mechanism connected to the test ball, the pressure loading mechanism being adapted to apply pressure to the test ball and the test disc; A pulse power supply, electrically connected to the test sphere, to provide a pulse voltage to the test sphere; The device further comprises a thickness detection mechanism for detecting the thickness of the oil film and an oscilloscope mechanism for displaying a pulse voltage signal curve.

2. The device according to claim 1, characterized in that The device also includes a ball clamp, which is suitable for clamping the test ball. The test ball is connected to the pressure loading mechanism through the ball clamp.

3. The device according to claim 2, characterized in that The device also includes a disc fixture, which is connected to the power output end of the speed regulating motor through a transmission member, and the test disc is fixed to the disc fixture.

4. The device according to claim 1, characterized in that The device includes a bracket, which includes a base and a first rod. The first rod is arranged on the base and extends upward. The speed regulating motor is installed on the base. The upper end of the first rod is connected to the pressure loading mechanism. The first rod is installed with the thickness detection mechanism. The thickness detection mechanism is constructed as an oil film thickness optical measuring instrument.

5. The device according to claim 3, characterized in that The device further comprises a lubricating oil box, which is arranged around the outer circumference of the disc fixture, and the upper end of the lubricating oil box protrudes from the upper surface of the test disc.

6. The device according to claim 3, characterized in that The power output end of the speed regulating motor is constructed as a power output shaft, and a conductive ring is provided on the power output shaft; The pulse power supply has a first input end and a first output end, the first input end is connected to the ball fixture, and the first output end is connected to the conductive ring.

7. The device according to claim 6, characterized in that The ball clamp includes a clamp body and a connecting terminal. A recessed portion for accommodating the test ball is disposed below the clamp body. The connecting terminal is disposed on the clamp body and connected to the first input end. The clamp body is constructed as a conductive member.

8. The device according to claim 2, characterized in that The device further comprises a friction sensor, which is adapted to detect the friction between the test ball and the test disc.

9. The device according to claim 8, characterized in that An insulating layer is also provided between the friction force sensor and the ball clamp.

10. The device according to claim 1, characterized in that The device also includes a force detection mechanism for detecting the pressure applied by the pressure loading mechanism on the test ball.

11. A method for measuring discharge damage of bearing materials, characterized in that: The device for measuring discharge damage of bearing materials according to any one of claims 1 to 10, the method comprising: Driving the test disc to rotate to a preset speed; Controlling the pressure loading mechanism to generate pressure between the test disc and the test ball, and detecting the friction between the test ball and the test disc; Allowing current to flow through the test disc and the test ball; The oil film thickness between the test disc and the test ball is detected.

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