Device and method for detecting adhesiveness of bearing lubricating grease

Abstract

The invention discloses a bearing grease adhesiveness detection device and method.The detection device comprises an environment simulation cabin, a simulation mechanism main body, a load loading mechanism and a detection mechanism, the environment simulation cabin comprises a bottom plate, a cover body and a temperature and humidity control assembly, and the cover body covers the bottom plate; the temperature and humidity control assembly is used for adjusting the temperature and humidity in the environment simulation cavity; the simulation mechanism main body comprises a mounting plate, a torque detection assembly, a simulation bearing, a shaft rod and a rotation driving part; the load loading mechanism is used for applying an axial load and a radial load to the shaft rod. According to the application, the temperature and humidity control assembly can reproduce a complex environment in the actual use of the bearing, apply axial and radial loads and drive the shaft rod to rotate at the same time, and the composite stress state of the bearing in operation is simulated; torque detection and image observation are combined, the influence of adhesiveness on friction is quantified, the adhesion form of lubricating grease is visually displayed, and the accuracy and reliability of evaluation are improved.

Description

Technical Field

[0001] The present application relates to the field of grease performance testing, and specifically to a device and method for testing the adhesion of bearing grease. Background Art

[0002] As core components of mechanical transmission, bearing lubrication performance is crucial, directly impacting the lifespan and reliability of the equipment. With the continuous development of the modern machinery industry, the operating environments of various types of machinery and equipment are becoming increasingly complex and diverse, placing increasing demands on bearing performance. From everyday household machinery to large-scale industrial equipment, from ordinary indoor environments to those with extreme high humidity, bearings play a key role. Good lubrication can effectively reduce bearing wear, lower energy loss, improve equipment efficiency, and ultimately ensure the stable operation of the entire machinery.

[0003] In the past, bearing lubrication was handled in a variety of ways. When selecting grease, technicians would use experience to select a grease with an appropriate viscosity, hoping to balance friction and grease loss. Testing the adhesion of bearing lubricant oil typically involved static testing or testing in a no-load, laboratory environment. These methods were common practices in the industry at the time, aiming to ensure, from various perspectives, that the bearing's lubrication performance met the equipment's operational requirements.

[0004] However, existing technologies have obvious flaws. On the one hand, it is difficult to accurately control the appropriate viscosity when selecting grease. Excessive grease viscosity will lead to increased friction, while too low a viscosity will easily cause loss, which to a certain extent affects the normal operation of the bearing. On the other hand, when testing the adhesion of lubricating oil, existing static tests or no-load, laboratory environment testing methods do not simulate the load state and temperature and humidity conditions of the actual operation of the bearing, resulting in a large deviation between the test results and engineering applications. At the same time, it is impossible to observe the dynamic distribution of lubricating oil inside the bearing in real time, making it difficult to locate the failure mode of grease and unable to adapt well to the requirements for bearing lubrication in complex environments. Summary of the Invention

[0005] In order to solve the technical problems in the prior art, the present application provides a bearing grease adhesion detection device and method.

[0006] The present application provides a bearing grease adhesion detection device and method using the following technical solutions: A bearing grease adhesion detection device, comprising: An environmental simulation chamber, comprising a base plate, a cover, and a temperature and humidity control assembly, wherein the cover is disposed on the base plate to form an environmental simulation chamber therebetween, and the temperature and humidity control assembly is used to adjust the temperature and humidity within the environmental simulation chamber; The simulation mechanism body includes a mounting plate, a torque detection assembly, a simulation bearing, a shaft and a rotation drive member. The mounting plate is arranged above the base plate via the torque detection assembly. The torque detection assembly is used to detect the torque between the mounting plate and the base plate. The simulation bearing is filled with grease to be tested. The outer ring of the simulation bearing is made of a transparent material and is fixed to the mounting plate. The shaft is fixedly inserted into the inner ring of the simulation bearing. The rotation drive member is connected to one end of the shaft and is used to drive the shaft to rotate. a load-applying mechanism connected to the other end of the shaft and configured to apply an axial load and a radial load to the shaft; The detection mechanism includes a camera assembly, and the camera assembly is used to obtain an image of the simulated bearing to obtain the grease distribution in the simulated bearing.

[0007] In some embodiments, the load loading mechanism includes a fixed block, a push plate, an axial pushing assembly, a turntable, a slider, a connecting piece and a radial pushing assembly. The fixed block is fixed to the base plate, and a receiving groove is provided in the fixed block. The push plate is slidably arranged in the receiving groove and can move axially along the shaft. The axial pushing assembly is connected to both the fixed block and the push plate, and is used to apply a preset thrust to the push plate. The turntable is rotatably connected to the push plate, and a plurality of sliding grooves are provided on the turntable. The sliding grooves extend radially along the turntable. The slider is slidably arranged in the sliding grooves. One end of the connecting piece is fixedly connected to the slider, and the other end of the connecting piece is fixedly connected to the other end of the shaft. The radial pushing assembly is used to apply a radial thrust to the slider.

[0008] In some embodiments, the fixing block is provided with a plurality of first screw holes connected to the accommodating groove, the axial pushing assembly includes a plurality of axial pushing members, the axial pushing members include a first screw and an axial pressure sensor, the first screw is threadedly connected to the corresponding first screw hole, one end of the first screw abuts against one end of the axial pressure sensor, and the other end of the axial pressure sensor abuts against the push plate.

[0009] In some embodiments, the radial pushing assembly includes a plurality of radial pushing members, each of which includes a base block, a second screw and a radial pressure sensor. The base block is fixed in the slide groove, a second screw hole is provided on the base block, and the second screw is threadedly connected to the corresponding second screw hole. One end of the second screw abuts against one end of the radial pressure sensor, and the other end of the radial pressure sensor abuts against the slider.

[0010] In some embodiments, the torque detection assembly includes a stop block and two resistance detection pressure sensors, the stop block is fixed on the base plate, a positioning groove is provided at the lower end of the mounting plate, the stop block is located in the positioning groove, the upper end surface of the stop block is arc-shaped, and is in line contact with the inner top surface of the positioning groove, the two resistance detection pressure sensors are respectively fixed on both sides of the stop block, and respectively abut against the two opposite inner walls of the positioning groove.

[0011] In some embodiments, the cover body includes four side panels and a top panel, the four side panels are respectively fixed to the bottom panel, and the top panel is fixed to the four side panels.

[0012] In some embodiments, the temperature and humidity control component includes a temperature controller, a humidity controller, a temperature sensor, and a humidity sensor, and the temperature controller, the humidity controller, the temperature sensor, and the humidity sensor are all fixed to the lower end surface of the top plate.

[0013] In some embodiments, the camera assembly includes a plurality of lower cameras and a plurality of upper cameras. The lower cameras are installed below the simulated bearing via a lower bracket and are used to capture images of the lower part of the simulated bearing. The upper cameras are installed above the simulated bearing via an upper bracket and are used to capture images of the upper part of the simulated bearing. The detection mechanism also includes a lifting drive component, which is connected to the upper bracket and is used to control the lifting and lowering of the upper bracket.

[0014] In some embodiments, the outer ring of the simulated bearing is provided with a plurality of first fixing screw holes, the mounting plate is provided with a plurality of second fixing screw holes, and the simulation mechanism body also includes a plurality of fixing screws, which are threadedly connected to the first fixing screw holes and the second fixing screw holes, thereby achieving the fixation of the simulated bearing.

[0015] The present invention also provides a bearing grease adhesion detection method, which is applicable to the bearing grease adhesion detection device and comprises the following steps: S1. Adjust the temperature and humidity in the environmental simulation chamber to the target values ​​through the temperature and humidity control components of the environmental simulation chamber to provide controllable external conditions for testing; S2. Fill the simulated bearing with the grease to be tested. The outer ring of the simulated bearing is fixed to the mounting plate. The shaft is inserted into the inner ring and connected to the rotating drive member to ensure that the shaft can rotate with the drive member. S3. The load-applying mechanism applies axial and radial loads to the other end of the shaft, simulating the stress state of the bearing during actual operation. Simultaneously, the rotation drive is activated, driving the shaft and the inner ring of the simulated bearing to rotate, resulting in relative motion between the inner and outer rings. S4. Since the adhesion of grease affects the friction between the inner and outer rings, the torque detection component monitors the torque changes between the mounting plate and the base plate in real time, indirectly reflecting the adhesion performance of the grease. At the same time, the camera of the detection mechanism continuously captures the simulated bearing image of the transparent outer ring to record the distribution state of the grease under rotation and load.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. The temperature and humidity control component can reproduce the complex environment in which bearings are actually used, making the test results closer to real working conditions. Simultaneously applying axial and radial loads and driving the shaft to rotate simulates the complex stress state of the bearing during operation, avoiding test deviations under single load or no load conditions. 2. The combination of torque detection and image observation not only quantifies the impact of adhesion on friction, but also intuitively displays the adhesion morphology of grease, improving the accuracy and reliability of the assessment; 3. Transparent outer ring design: The dynamic changes of grease can be observed in real time through the camera. The detection can be completed without disassembling the simulated bearing, which improves the detection efficiency and reduces losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 1 is a schematic structural diagram of a bearing grease adhesion detection device provided in one embodiment of the present application; Figure 2 yes Figure 1 A schematic diagram of the structure of the bearing grease adhesion detection device omitting the cover and the detection mechanism; Figure 3 yes Figure 2 A partial enlarged view of the middle area A; Figure 4 yes Figure 2 A partial enlarged view of the middle area B; Figure 5 yes Figure 2 Cross-sectional view of the middle section CC; Figure 6 yes Figure 5 A partial enlarged view of the middle area D; Figure 7 yes Figure 1 A schematic diagram of the three-dimensional structure of the bearing grease adhesion detection device after omitting the cover and the detection mechanism; Figure 8 yes Figure 1 A schematic diagram of the structure of the cover body and the detection mechanism; Explanation of reference numerals: 1. Environmental simulation cabin; 11. Bottom plate; 12. Cover; 121. Side plate; 122. Top plate; 13. Temperature and humidity control assembly; 131. Temperature controller; 132. Humidity controller; 133. Temperature sensor; 134. Humidity sensor; 2. Simulation mechanism body; 21. Mounting plate; 211. Clearance hole; 212. Positioning groove; 22. Torque detection assembly; 221. Stop block; 222. Resistance detection pressure sensor; 23. Simulation bearing; 24. Shaft; 25. Rotating drive member; 251. Servo motor; 252. Coupling; 26. Fixing screw; 3. Load adding Carrying mechanism; 31. Fixed block; 311. Accommodating groove; 32. Push plate; 321. Limiting groove; 33. Axial pushing assembly; 331. First screw; 332. Axial pressure sensor; 34. Turntable; 341. Ball; 342. Slide groove; 35. Slider; 36. Connector; 361. Connecting block; 362. Bolt; 37. Radial pushing assembly; 371. Base block; 372. Second screw; 373. Radial pressure sensor; 4. Detection mechanism; 41. Camera component assembly; 411. Lower camera component; 412. Upper camera component; 413. Lower bracket; 414. Upper bracket; 42. Lifting drive component. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. The described embodiments are only possible technical implementations of the present invention, but are not limited thereto. Those skilled in the art can fully combine the embodiments of the present invention, and other embodiments obtained without creative work are also within the scope of protection of the present invention.

[0019] This application mainly adopts a detection device and method that simulates dynamic working conditions and monitors grease distribution in real time, thereby providing data support for lubricant selection and bearing design in complex environments. The following is a further detailed description of this application.

[0020] Please refer to Figures 1-8 The bearing grease adhesion detection device provided in the embodiment of the present application includes an environmental simulation cabin 1, a simulation mechanism main body 2, a load loading mechanism 3 and a detection mechanism 4, wherein the environmental simulation cabin 1 provides a simulated temperature and humidity environment for the simulation mechanism main body 2, the load loading mechanism 3 and the detection mechanism 4, the simulation mechanism main body 2 is used to simulate the actual rotation of the bearing, the load loading mechanism 3 applies axial and radial loads to the shaft 24 of the simulation mechanism main body 2, and the detection mechanism 4 obtains the distribution of grease in the simulated bearing 23, achieving the beneficial effect of simulating dynamic working conditions and monitoring the distribution of lubricating oil in real time. This is because the temperature and humidity conditions of the actual working conditions are simulated by the environmental simulation cabin 1, the load loading mechanism 3 applies the actual load, and the detection mechanism 4 obtains the grease distribution in real time, making the detection results closer to actual engineering applications.

[0021] Please refer to Figure 1 and Figure 8 The environmental simulation cabin 1 includes a base plate 11, a cover 12 and a temperature and humidity control component 13. The base plate 11 is the basic supporting component of the entire environmental simulation cabin 1. It is made of 304 stainless steel and has good corrosion resistance and stability. The cover 12 is mounted on the base plate 11, and an environmental simulation chamber is formed between the two. The cover 12 includes four side panels 121 and a top panel 122. The four side panels 121 are respectively fixed on the base plate 11, and the top panel 122 is fixed to the four side panels 121. The side panels 121 and the top panel 122 are both made of transparent materials, such as tempered glass or acrylic panels, which makes it convenient for operators to observe the situation inside the environmental simulation chamber from the outside, and an operating door that can be opened or closed is provided on one side panel 121 to facilitate the installation, debugging and maintenance of internal components.

[0022] Please refer to Figure 1 and Figure 8 The temperature and humidity control assembly 13 includes a temperature controller 131, a humidity controller 132, a temperature sensor 133, and a humidity sensor 134, all of which are fixed to the lower end surface of the top plate 122. The temperature sensor 133 and humidity sensor 134 monitor the temperature and humidity data within the environmental simulation chamber in real time and feed the data back to the temperature controller 131 and humidity controller 132. The temperature controller 131 and humidity controller 132 adjust the temperature and humidity within the environmental simulation chamber based on the feedback data to simulate different actual operating conditions. The temperature and humidity control assembly 13 can simulate temperature and humidity environments with a range of 10-95% RH and -10-80°C. The temperature sensor 133 has an accuracy of ±0.5°C, and the humidity sensor 134 has an accuracy of ±1% RH. The temperature controller 131 can use a PID controller, which has good control accuracy and stability. The humidity controller 132 uses ultrasonic atomization and heating evaporation to more accurately control humidity. The cabin is equipped with a rotating sealing hole (leakage rate ≤ 0.1% RH / h) and a fog-proof observation window (light transmittance ≥ 85%) to ensure the stability and observability of the simulated environment.

[0023] Please refer to Figure 1-Figure 7 The simulation mechanism body 2 includes a mounting plate 21, a torque detection assembly 22, a simulated bearing 23, a shaft 24, and a rotation drive member 25. The mounting plate 21 is arranged above the base plate 11 via the torque detection assembly 22. The mounting plate 21 has a clearance hole 211 for the shaft 24 to pass through. The shaft 24 has a clearance fit in the clearance hole 211.

[0024] Please refer to Figure 1-Figure 7The torque detection assembly 22 includes a stop block 221 and two resistance detection pressure sensors 222. In this embodiment, there are two stop blocks 221 and two mounting plates 21. The stop block 221 is fixed to the base plate 11. A positioning groove 212 is provided at the lower end of the mounting plate 21. The stop block 221 is located in the positioning groove 212. The upper end surface of the stop block 221 is arc-shaped and is in line contact with the inner top surface of the positioning groove 212. This line contact method can support the mounting plate 21 in the vertical direction without hindering the rotation trend of the mounting plate 21. There is a gap between the lower end surface of the mounting plate 21 and the base plate 11, so that the rotation trend of the mounting plate 21 will not be hindered by the existence of the base plate 11, thereby improving the accuracy of the detection. The two resistance detection pressure sensors 222 are respectively fixed to both sides of the stop block 221 and respectively abut against the two opposite inner walls of the positioning groove 212. During use, when the shaft 24 rotates, the shaft 24 will drive the outer ring of the simulated bearing 23 to rotate, and the inner ring of the simulated bearing 23 will be subjected to the force of the outer ring, and will also have a tendency to rotate, thereby causing the mounting plate 21 fixed thereto to have a tendency to rotate around the shaft 24. However, due to the obstruction of the anti-rotation block 221, the mounting plate 21 cannot rotate. The tendency of the mounting plate 21 to rotate is converted into the pressure exerted on the mounting plate 21 by a certain resistance detection pressure sensor 222. By detecting the size of the resistance detection pressure sensor 222, the strength of the tendency of the mounting plate 21 to rotate can be judged, and the strength of the tendency of the mounting plate 21 to rotate is related to the friction between the inner and outer rings of the simulated bearing 23, and the size of the friction is related to the performance of the grease. Therefore, the lubrication performance of the grease under actual working conditions can be judged by detecting the size of the resistance detection pressure sensor 222.

[0025] Please refer to Figure 1-Figure 7 The simulated bearing 23 is filled with the grease to be tested. The outer ring of the simulated bearing 23 is made of transparent ceramic or polycarbonate with a light transmittance of ≥85%, which makes it easier for the detection mechanism 4 to observe the distribution of the internal grease. In addition, the outer ring of the simulated bearing 23 is provided with a plurality of first fixing screw holes, and the mounting plate 21 is provided with a plurality of second fixing screw holes. The simulation mechanism body 2 also includes a plurality of fixing screws 26, which are threadedly connected to the first fixing screw holes and the second fixing screw holes, thereby fixing the simulated bearing 23. The shaft 24 is fixedly inserted into the inner ring of the simulated bearing 23. Specifically, the shaft 24 and the inner ring of the simulated bearing 23 are key-connected. The rotation drive 25 is connected to one end of the shaft 24 and is used to drive the shaft 24 to rotate. The rotating drive member 25 uses a servo motor 251 with a speed range of 0-3000rpm and an accuracy of ±1rpm. The output shaft of the motor is connected to the shaft 24 through a coupling 252, transmitting power to the shaft 24, so that the shaft 24 drives the simulated bearing 23 to rotate.

[0026] Please refer to Figure 1-Figure 7The load loading mechanism 3 includes a fixed block 31, a push plate 32, an axial pushing assembly 33, a rotating disk 34, a slider 35, a connecting member 36, and a radial pushing assembly 37. The fixed block 31 is fixed to the base plate 11. A receiving groove 311 is defined in the fixed block 31. The push plate 32 is slidably disposed in the receiving groove 311 and can move axially along the shaft 24.

[0027] Please refer to Figures 1-6 The axial pushing assembly 33 includes a plurality of axial pushing members, which include a first screw 331 and an axial pressure sensor 332. The fixed block 31 is provided with a plurality of first screw holes connected to the accommodating groove 311. The first screw 331 is threadedly connected to the corresponding first screw holes. One end of the first screw 331 abuts against one end of the axial pressure sensor 332, and the other end of the axial pressure sensor 332 abuts against the push plate 32. By rotating the first screw 331, the thrust of the axial pressure sensor 332 on the push plate 32 can be adjusted, thereby applying a preset axial load to the shaft 24. The axial load range is 0-50kN, and the accuracy is ±1%FS. A limiting groove 321 is formed on the push plate 32, and the axial pressure sensor 332 is arranged in the limiting groove 321 to prevent the axial pressure sensor 332 from detaching from the push plate 32.

[0028] The turntable 34 is rotatably connected to the push plate 32. Specifically, an annular groove is defined on the contact surfaces of the turntable 34 and the push plate 32. Several balls 341 slide within the groove, allowing the rotational motion between the turntable 34 and the push plate 32 to be converted into movement of the balls 341, reducing friction during rotation between the turntable 34 and the push plate 32. The turntable 34 is also provided with several sliding grooves 342 extending radially along the turntable 34. A slider 35 slides within the sliding grooves 342. One end of a connector 36 is fixedly connected to the slider 35, while the other end of the connector 36 is fixedly connected to the other end of the shaft 24. The connector 36 includes a connecting block 361 and several bolts 362. The connecting block 361 is fixed to the other end of the shaft 24 and is fixedly connected to the slider 35 via the bolts 362. In this embodiment, there are three sliders 35 to enhance stability.

[0029] Please refer to Figure 1-Figure 7The radial pushing assembly 37 includes several radial pushing members, including a base block 371, a second screw 372, and a radial pressure sensor 373. The base block 371 is fixed in the slide groove 342. A second screw hole is defined in the base block 371, and the second screw 372 is threadedly connected to the corresponding second screw hole. One end of the second screw 372 abuts one end of the radial pressure sensor 373, and the other end of the radial pressure sensor 373 abuts the slider 35. By rotating the second screw 372, the thrust of the radial pressure sensor 373 on the slider 35 can be adjusted, thereby applying a preset radial load to the shaft 24. The radial load range is 0-50 kN, with an accuracy of ±1% FS.

[0030] Please refer to Figure 1 and Figure 8 The detection mechanism 4 includes a camera assembly 41, which includes a plurality of lower cameras 411 and a plurality of upper cameras 412. The lower cameras 411 are mounted below the simulated bearing 23 via a lower bracket 413 and are used to capture images of the lower portion of the simulated bearing 23. The upper cameras 412 are mounted above the simulated bearing 23 via an upper bracket 414 and are used to capture images of the upper portion of the simulated bearing 23. The detection mechanism 4 also includes a lifting drive 42, which is connected to the upper bracket 414 and is used to control the raising and lowering of the upper bracket 414. When installing the simulated bearing 23, the upper bracket 414 can be raised to prevent the upper cameras 412 from obstructing the operation. The lower camera 411 and the upper camera 412 use high-speed industrial cameras with a frame rate of ≥500fps and a resolution of 1280×1024, and are equipped with an LED ring light source (wavelength 532nm). They can clearly capture the dynamic distribution of grease in the simulated bearing 23, such as oil film thickness, coverage, migration path, etc.

[0031] The detection method steps include: S1. Environmental adjustment: The temperature and humidity in the environmental simulation chamber are adjusted to target values ​​through the temperature and humidity control component 13 of the environmental simulation chamber 1 to provide controllable external conditions for detection.

[0032] S2. Grease filling and installation: Fill the simulated bearing 23 with the grease to be tested. The outer ring of the simulated bearing 23 is fixed to the mounting plate 21 . The shaft 24 is inserted into the inner ring and connected to the rotating drive member 25 to ensure that the shaft 24 can rotate with the rotating drive member 25 .

[0033] S3. Load application and rotation: The load loading mechanism 3 applies axial and radial loads to the other end of the shaft 24 to simulate the stress state of the bearing in actual operation. At the same time, the rotation drive 25 is started to drive the shaft 24 and the inner ring of the simulated bearing 23 to rotate, forming relative motion between the inner and outer rings.

[0034] S4. Data Monitoring and Evaluation: Because grease adhesion affects the friction between the inner and outer rings, the torque detection assembly 22 monitors the torque changes between the mounting plate 21 and the base plate 11 in real time, indirectly reflecting the grease's adhesion performance. Simultaneously, the camera assembly 41 of the detection mechanism 4 continuously captures images of the simulated bearing 23 with a transparent outer ring, recording the grease's distribution under rotation and load (e.g., whether it adheres evenly, whether it loses or accumulates), directly assessing adhesion. The test data is analyzed based on the aforementioned key evaluation indicators to determine the lubricant's adhesion assessment results.

[0035] This device uses multi-dimensional key evaluation indicators to evaluate the adhesion of lubricating oil: Dynamic adhesion stability: The increase in frictional resistance due to decreased lubricant adhesion is reflected by calculating the torque growth ratio ΔT = (T1 - T0) / T0 × 100% (T1 is the operating resistance after 24 hours, T0 is the initial resistance). The smaller ΔT, the more stable the adhesion. Operating resistance can be obtained using resistance detection pressure sensor 222.

[0036] Lubricant coverage: Coverage C = (lubricant coverage area / bearing internal effective area) × 100% (calculated through image recognition). This directly reflects whether the lubricant is lost during dynamic operation due to centrifugal force, water erosion, etc. The slower the decrease in C, the better the adhesion.

[0037] Oil film thickness decay rate: Δh = (h0 - h1) / h0 × 100% (h0 is the initial contact area oil film thickness, h1 is the thickness after 24 hours). This evaluates the oil film's ability to maintain performance under high humidity and load conditions. A smaller Δh indicates greater resistance to water erosion and extrusion. Ink thickness can also be determined through image analysis.

[0038] Failure mode location: High-speed camera video playback is used to determine the type of lubricant loss, including throw-off loss (thrown out from the bearing edge due to centrifugal force), emulsification loss (seeping out from the seal after mixing with water vapor), and cohesive fracture (internal fracture of the lubricant causing localized oil shortage), so as to optimize the lubricant formula (such as adding viscosity enhancers to prevent throw-off and improve anti-emulsification properties).

[0039] To sum up, the bearing grease adhesion detection device and method of the present application can simulate dynamic working conditions and monitor the distribution of lubricating oil in real time, providing accurate data support for lubricating oil selection and bearing design in complex environments. Compared with the existing technology, it overcomes the problems of unrealistic working condition simulation and lack of distribution monitoring, and improves the fit between the detection results and engineering applications.

[0040] The technical effects of the technical solution provided by this application include: (1) The temperature and humidity control component 13 can reproduce the complex environment in which the bearing is actually used (such as high-temperature and humid industrial scenes or low-temperature and dry polar environments), and the test results are closer to the actual working conditions. At the same time, axial and radial loads are applied and the shaft 24 is driven to rotate, simulating the composite stress state of the bearing during operation and avoiding detection deviations under single load or no load conditions; (2) The combination of torque detection (indirectly reflecting friction) and image observation (directly recording distribution state) not only quantifies the effect of adhesion on friction, but also intuitively displays the adhesion morphology of grease, improving the accuracy and reliability of the assessment; (3) Transparent outer ring design: The dynamic changes of grease can be observed in real time through the camera assembly 41, and the detection can be completed without disassembling the simulated bearing 23, which improves the detection efficiency and reduces the loss.

[0041] The specific implementation methods of the present application described above do not constitute a limitation on the scope of protection of the present application. Any other corresponding changes and modifications made based on the technical concept of the present application should be included in the scope of protection of the present application.

Claims

1. A bearing grease adhesion detection device, characterized in that: include: An environmental simulation chamber (1) comprises a base plate (11), a cover (12) and a temperature and humidity control assembly (13); the cover (12) is disposed on the base plate (11), forming an environmental simulation chamber between the two; and the temperature and humidity control assembly (13) is used to adjust the temperature and humidity in the environmental simulation chamber; A simulation mechanism body (2), comprising a mounting plate (21), a torque detection assembly (22), a simulation bearing (23), a shaft (24) and a rotation drive member (25), wherein the mounting plate (21) is arranged above the base plate (11) via the torque detection assembly (22), the torque detection assembly (22) is used to detect the torque between the mounting plate (21) and the base plate (11), the simulation bearing (23) is used to be filled with grease to be tested, the outer ring of the simulation bearing (23) is made of a transparent material and is fixed to the mounting plate (21), the shaft (24) is fixedly inserted into the inner ring of the simulation bearing (23), and the rotation drive member (25) is connected to one end of the shaft (24) and is used to drive the shaft (24) to rotate; a load loading mechanism (3) connected to the other end of the shaft (24) and used to apply axial load and radial load to the shaft (24); A detection mechanism (4), the detection mechanism (4) comprising a camera assembly (41), the camera assembly (41) being used to obtain an image of the simulated bearing (23) to obtain the distribution of grease in the simulated bearing (23).

2. The bearing grease adhesion detection device according to claim 1, characterized in that: The load loading mechanism (3) comprises a fixed block (31), a push plate (32), an axial pushing assembly (33), a rotating disk (34), a slider (35), a connecting piece (36) and a radial pushing assembly (37), wherein the fixed block (31) is fixed to the base plate (11), a receiving groove (311) is provided in the fixed block (31), the push plate (32) is slidably arranged in the receiving groove (311) and can move along the axial direction of the shaft (24), the axial pushing assembly (33) is connected to the fixed block (31) and the push plate (32), and is used to push the fixed block (31) and the push plate (32) to the radial direction. The push plate (32) applies a thrust of a preset size, the turntable (34) is rotatably connected to the push plate (32), a plurality of slide grooves (342) are provided on the turntable (34), the slide grooves (342) extend radially along the turntable (34), the slider (35) is slidably arranged in the slide grooves (342), one end of the connecting member (36) is fixedly connected to the slider (35), and the other end of the connecting member (36) is fixedly connected to the other end of the shaft (24), and the radial pushing component (37) is used to apply a radial thrust to the slider (35).

3. The bearing grease adhesion detection device according to claim 2, characterized in that: The fixing block (31) is provided with a plurality of first screw holes connected to the accommodating groove (311); the axial pushing assembly (33) includes a plurality of axial pushing members, and the axial pushing members include a first screw rod (331) and an axial pressure sensor (332); the first screw rod (331) is threadedly connected to the corresponding first screw hole; one end of the first screw rod (331) abuts against one end of the axial pressure sensor (332); and the other end of the axial pressure sensor (332) abuts against the pushing plate (32).

4. The bearing grease adhesion detection device according to claim 2, characterized in that: The radial pushing assembly (37) includes a plurality of radial pushing members, and the radial pushing members include a base block (371), a second screw rod (372) and a radial pressure sensor (373). The base block (371) is fixed in the slide groove (342). A second screw hole is provided on the base block (371). The second screw rod (372) is threadedly connected to the corresponding second screw hole. One end of the second screw rod (372) abuts against one end of the radial pressure sensor (373), and the other end of the radial pressure sensor (373) abuts against the slider (35).

5. The bearing grease adhesion detection device according to claim 1, characterized in that: The torque detection assembly (22) includes a stop block (221) and two resistance detection pressure sensors (222). The stop block (221) is fixed on the base plate (11). A positioning groove (212) is provided at the lower end of the mounting plate (21). The stop block (221) is located in the positioning groove (212). The upper end surface of the stop block (221) is arc-shaped and is in line contact with the inner top surface of the positioning groove (212). The two resistance detection pressure sensors (222) are respectively fixed on both sides of the stop block (221) and respectively abut against the two opposite inner side walls of the positioning groove (212).

6. The bearing grease adhesion detection device according to claim 1, characterized in that: The cover body (12) comprises four side panels (121) and a top panel (122), the four side panels (121) are respectively fixed on the bottom panel (11), and the top panel (122) is fixed to the four side panels (121).

7. The bearing grease adhesion detection device according to claim 6, characterized in that: The temperature and humidity control component (13) includes a temperature controller (131), a humidity controller (132), a temperature sensor (133) and a humidity sensor (134), and the temperature controller (131), the humidity controller (132), the temperature sensor (133) and the humidity sensor (134) are all fixed to the lower end surface of the top plate (122).

8. The bearing grease adhesion detection device according to claim 1, characterized in that: The camera assembly (41) includes a plurality of lower camera components (411) and a plurality of upper camera components (412). The lower camera components (411) are mounted below the simulated bearing (23) via a lower bracket (413) and are used to capture images of the lower portion of the simulated bearing (23). The upper camera components (412) are mounted above the simulated bearing (23) via an upper bracket (414) and are used to capture images of the upper portion of the simulated bearing (23). The detection mechanism (4) also includes a lifting drive component (42). The lifting drive component (42) is connected to the upper bracket (414) and is used to control the lifting of the upper bracket (414).

9. The bearing grease adhesion detection device according to claim 1, characterized in that: The outer ring of the simulated bearing (23) is provided with a plurality of first fixing screw holes, the mounting plate (21) is provided with a plurality of second fixing screw holes, and the simulation mechanism body (2) further comprises a plurality of fixing screws (26), the fixing screws (26) being threadedly connected to the first fixing screw holes and the second fixing screw holes, thereby achieving fixation of the simulated bearing (23).

10. A method for detecting the adhesion of bearing grease, characterized in that: The device for detecting the adhesion of bearing grease according to any one of claims 1 to 9 comprises the following steps: S1, adjusting the temperature and humidity in the environment simulation chamber to target values ​​through the temperature and humidity control component (13) of the environment simulation chamber (1) to provide controllable external conditions for detection; S2. Fill the grease to be tested into the simulated bearing (23), the outer ring of the simulated bearing (23) is fixed to the mounting plate (21), the shaft (24) is inserted into the inner ring and connected to the rotating drive member (25), ensuring that the shaft (24) can rotate with the drive member; S3, the load loading mechanism (3) applies an axial load and a radial load to the other end of the shaft (24) to simulate the stress state of the bearing (23) in actual operation; at the same time, the rotation drive member (25) is started to drive the shaft (24) and the inner ring of the simulated bearing (23) to rotate, thereby forming a relative motion between the inner ring and the outer ring; S4. Since the adhesion of grease affects the friction between the inner ring and the outer ring, the torque detection component (22) monitors the torque change between the mounting plate (21) and the base plate (11) in real time, indirectly reflecting the adhesion performance of the grease. At the same time, the camera of the detection mechanism (4) continuously captures the image of the simulated bearing (23) with a transparent outer ring, recording the distribution state of the grease under rotation and load.

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