Vibration monitoring system suitable for integrated bearing

Abstract

The invention provides a vibration monitoring system suitable for an integrated bearing, and the system comprises a servo motor, an output shaft of which is sleeved with a coupler and a wedge-shaped hole sleeve; the bearing fixing seats are sequentially arranged in the axial direction of the output shaft; a pre-tightening device is arranged at one end, facing the servo motor, of the hydraulic device; one end of the integrated bearing sequentially penetrates through the bearing fixing seats to be fixedly connected with the wedge-shaped hole sleeve, and the other end of the integrated bearing is fixed to the pre-tightening device in an abutting mode; the at least one vibration sensing device is fixedly arranged on any bearing fixing seat and is used for detecting and obtaining a vibration signal in real time; the power supply device is fixedly mounted on the platform; and the control panel is used for controlling the hydraulic device to drive the pre-tightening device to abut against the integrated bearing, controlling the driving servo motor to drive the integrated bearing to rotate, and analyzing according to the vibration signal to obtain a special frequency band and a fault characteristic frequency. The method has the beneficial effects that real-time vibration data of the bearing can be effectively collected, and main influence factors on the service life of the bearing under specific conditions can be analyzed.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing monitoring systems, and in particular to a vibration monitoring system suitable for an integrated bearing. Background Art

[0002] Bearings are a crucial component in modern machinery. Their primary function is to support rotating parts, reduce friction during movement, and ensure rotational accuracy. After bearing production, samples are taken to test their load, lifespan, and other performance characteristics to ensure bearing quality.

[0003] Vibration signals are a key indicator of bearing operating characteristics. Analyzing and studying the vibration characteristics of rolling ball bearings under specific test conditions (speed and axial load) is an important research method for evaluating bearing quality and operating status. In the field of fault diagnosis, internal bearing faults can be quickly diagnosed by collecting bearing radial vibration signals and combining them with time and frequency domain analysis methods.

[0004] Currently, existing technologies for vibration monitoring of a single bearing require each bearing to be placed in a separate bearing housing. Consequently, the monitored vibration signal cannot be converted into a visually identifiable characteristic vibration frequency. When replacing a bearing housing, which is heavy and complex to install, the vibration data collected is primarily collected via sensors on the outer wall of the housing, resulting in errors in the actual bearing characteristic frequency. This results in significant interference with the actual data, making it impossible to accurately extract the characteristic frequency band, which can lead to deviations in subsequent bearing optimization and life prediction.

[0005] Therefore, effectively collecting real-time vibration data of bearings and analyzing the main factors affecting their service life under specific conditions is a technical problem that needs to be solved urgently. Summary of the Invention

[0006] The technical problem to be solved by the present invention is how to effectively collect real-time vibration data of bearings and analyze the main factors affecting their service life under specific conditions. In order to overcome the defects of the above-mentioned existing technologies (or related technologies), the present invention provides a vibration monitoring system suitable for integrated bearings.

[0007] The present invention provides a vibration monitoring system applicable to an integrated bearing, comprising: A servo motor is fixedly mounted on the platform, wherein a coupling is sleeved on the output shaft of the servo motor, one end of the coupling is fixedly connected to the output shaft, and the other end of the coupling is fixedly connected to the wedge-shaped hole sleeve; A plurality of bearing fixing seats, fixedly mounted on the platform and arranged in sequence along the axial direction of the output shaft; a hydraulic device, fixedly mounted on the platform and located in the axial direction of the output shaft, wherein a retractable pre-tightening device is provided at one end of the hydraulic device facing the servo motor; An integrated bearing, one end of which passes through each of the bearing fixing seats in sequence and is fixedly connected to the wedge-shaped hole sleeve, and the other end of which is abutted and fixed to the preload device; At least one vibration sensing device, fixedly mounted on any one of the bearing fixing seats, for detecting and outputting a vibration signal of the integrated bearing in real time; a power supply device, fixedly mounted on the platform and electrically connected to the servo motor, the hydraulic device and the vibration sensing device respectively; A control panel is mounted on the platform, electrically connected to the power supply device, and communicatively connected to the servo motor, the hydraulic device, and the vibration sensing device, and is used to control the hydraulic device to drive the preload device to abut against the integrated bearing, and to control the servo motor to drive the integrated bearing to rotate, and to obtain a special frequency band and a fault characteristic frequency as a vibration monitoring result based on the vibration signal analysis.

[0008] Compared with the prior art, the vibration monitoring system for an integrated bearing disclosed in this application has the following advantages: In this application, the output shaft of the servo motor is connected to the wedge-shaped hole sleeve through a coupling, which transmits a stable and variable speed of real-time output to drive the integrated bearing to rotate. The output shaft, coupling, wedge-shaped hole sleeve, bearing fixing seat, and hydraulic device are arranged in the same axial direction, and the reserved connection end of the integrated bearing is tightly matched with the wedge-shaped hole sleeve to ensure the power transmission of the servo motor. The speed is controlled by the servo motor, the axial force is controlled by the preload device, and the radial force is controlled by the bearing fixing seat. The vibration signal of the integrated bearing during operation is detected in real time by a vibration sensing device. Based on the vibration signal, the changes in the characteristic frequency band and fault characteristic frequency under different experimental conditions are analyzed, and the factors affecting the reliability of the integrated bearing are collected to effectively collect the real-time vibration data of the bearing and analyze the main factors affecting its service life under specific conditions.

[0009] In a possible embodiment, a motor controller is further included, which is fixedly mounted on the platform and electrically connected to the servo motor and the power supply device, respectively. When the motor controller receives an external input speed control instruction, it adjusts the real-time speed of the output shaft to the expected speed contained in the speed control instruction.

[0010] Compared with the existing technology, the above technical solution can provide users with the speed adjustment function of the servo motor, and the motor controller is set independently from the control panel and is not restricted by the control panel, which can avoid the problem of non-operation caused by failure of a single control component.

[0011] In one possible implementation, the control panel includes: A first control module is configured to control and activate the hydraulic device according to a first control instruction input by a user, so as to drive the pre-tightening device to extend and clamp the integrated bearing; or Upon receiving a second control instruction, controlling and starting the hydraulic device according to the second control instruction to drive the preload device to retract and release the integrated bearing; a second control module, configured to control and start the servo motor according to the third control instruction when receiving a third control instruction input by a user, so as to drive the integrated bearing to rotate; The data analysis module is used to perform multi-scale analysis on the vibration signal by using a wavelet transform algorithm or a Hilbert-Huang transform algorithm after receiving the vibration signal to obtain the special frequency band and the fault characteristic frequency.

[0012] Compared with the existing technology, the above technical solution can be used to control the extension and contraction of the pre-tightening device through the first control module, to control the start and stop of the servo motor through the second control module, and to perform multi-scale analysis of the vibration signal through the data analysis module. The three modules are set up in a non-connected partitioned manner, and do not interfere with the control process and analysis process, which can effectively improve data processing efficiency.

[0013] In a possible embodiment, a lifting device is further included, which is fixedly mounted on the platform and located below the hydraulic device, electrically connected to the power supply device and communicatively connected to the control panel. The control panel also includes a third control module, which is used to control the activation of the lifting device according to the fourth control instruction when receiving a fourth control instruction input by the user, so as to drive the hydraulic device to rise or fall.

[0014] Compared with the existing technology, the above technical solution can realize the height adjustment of the hydraulic device by introducing a lifting device. For different models of integrated bearings, their axial heights are not consistent. Therefore, by adjusting the height of the hydraulic device through the lifting device, the preload device and the integrated bearing can always be located on the same axis.

[0015] In a possible implementation, the control panel further includes a display module configured to receive the vibration signal and visually display the frequency spectrum and time domain waveform of the vibration signal.

[0016] Compared with the existing technology, the above technical solution can provide users with a visual interface, intuitively display the spectrum and time domain waveform of the vibration signal, and facilitate users to monitor the operating status of the integrated bearing in real time.

[0017] In a possible implementation, there are two bearing fixing seats, including a first bearing fixing seat and a second bearing fixing seat. The first bearing fixing seat is arranged close to the coupling, and the second bearing fixing seat is arranged close to the preload device.

[0018] In a possible implementation manner, at least one reserved hole is formed at the top of the second bearing fixing seat for fixedly installing the vibration sensor device.

[0019] Compared with the existing technology, the above technical solution can open a reserved hole, so that the setting position of the vibration sensor device is no longer limited to the outer wall of the bearing fixing seat, and can be closer to the integrated bearing, thereby improving the accuracy of the vibration signal.

[0020] In a possible implementation manner, each of the bearing fixing seats and the platform is detachably connected.

[0021] Compared with the existing technology, the above technical solution can facilitate the replacement of the integrated bearing and carry out vibration monitoring of different types of integrated bearings under different load conditions.

[0022] In a possible implementation, a torque sensor is provided in the coupling and is in communication with the control panel for detecting the torque change value of the integrated bearing in real time and outputting it to the control panel for inclusion in the vibration monitoring result.

[0023] Compared with the existing technology, the above technical solution can enrich the number of variable parameters of vibration monitoring results and improve the diversity of data.

[0024] In a possible implementation, the vibration sensing device is configured with an electrically connected filter and a signal amplifier, the filter is used to filter noise signals in the vibration signal, and the signal amplifier is used to amplify the vibration signal.

[0025] Compared with the existing technology, the above technical solution can further improve the accuracy of vibration signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the top view of the structure of the present invention; Figure 3 This is a schematic diagram of the structure of the control panel of the present invention; Explanation of the accompanying drawings: 1. Servo motor; 2. Platform; 3. Coupling; 4. Wedge-shaped sleeve; 5. Bearing fixing seat; 6. Hydraulic device; 7. Preload device; 8. Integrated bearing; 9. Vibration sensing device; 10. Power supply device; 11. Control panel; 111. First control module; 112. Second control module; 113. Data analysis module; 114. Third control module; 115. Display module; 12. Motor controller; 13. Lifting device. DETAILED DESCRIPTION

[0027] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific application scenarios.

[0028] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] See also Figure 1 and Figure 2, the embodiment of the present application discloses a vibration monitoring system for an integrated bearing, comprising a servo motor 1, a bearing fixing seat 5, a hydraulic device 6, an integrated bearing 8, a vibration sensing device 9, a power supply device 10, a control panel 11, a motor controller 12, and a lifting device 13, wherein the servo motor 1, the bearing fixing seat 5, the power supply device 10, the control panel 11, the motor controller 12, and the lifting device 13 are all located on a platform 2, the hydraulic device 6 is located on the lifting device 13, the integrated bearing 8 is fixed in the bearing fixing seat 5, the vibration sensing device 9 is fixed on the bearing fixing seat 5, a coupling 3 is provided on the output shaft of the servo motor 1, one end of the coupling 3 is fixedly connected to the output shaft, and the other end of the coupling 3 is fixedly connected to the wedge-shaped hole sleeve 4; a plurality of bearing fixing seats 5 are arranged in sequence along the axial direction of the output shaft; the hydraulic device 6 is located in the axial direction of the output shaft, and a retractable pre-tightening device 7 is provided on one end of the hydraulic device 6 facing the servo motor 1; one end of the integrated bearing 8 passes through each bearing fixing seat 5 and the wedge-shaped hole sleeve in sequence. The hole sleeve 4 is fixedly connected, and the other end of the integrated bearing 8 is fixedly abutted against the preload device 7; the vibration sensing device 9 is fixedly installed on any one of the bearing fixing seats 5, and is used to detect and output the vibration signal of the integrated bearing 5 in real time; the power supply device 10 is electrically connected to the servo motor 1, the hydraulic device 6 and the vibration sensing device 9 respectively; the control panel 11 is electrically connected to the power supply device 10, and is communicated with the servo motor 1, the hydraulic device 6 and the vibration sensing device 9, and is used to control the hydraulic device 6 to drive the preload device 7 to abut against the integrated bearing 8, and control the drive servo motor 1 to drive the integrated bearing 8 to rotate, and obtain the special frequency band and fault characteristic frequency as the vibration monitoring result according to the vibration signal analysis; the motor controller 12 is electrically connected to the servo motor 1 and the power supply device 10 respectively, and the motor controller 12 adjusts the real-time speed of the output shaft to the expected speed contained in the speed control instruction when receiving the external input speed control instruction; the lifting device 13 is electrically connected to the power supply device 10 and is communicated with the control panel 11.

[0030] See also Figure 3The control panel 11 includes a first control module 111, a second control module 112, a data analysis module 113, a third control module 114 and a display module 115, wherein the first control module 111 is used to control the start of the hydraulic device 6 according to the first control instruction when receiving a first control instruction input by the user, so as to drive the preload device 7 to extend and clamp the integrated bearing 8; or control the start of the hydraulic device 6 according to the second control instruction when receiving a second control instruction, so as to drive the preload device 7 to retract and release the integrated bearing 8; the second control module 112 is used to control the start of the servo motor 1 according to the third control instruction when receiving a third control instruction input by the user, so as to drive the integrated bearing 8 to rotate; the data analysis module 113 is used to perform multi-scale analysis on the vibration signal using a wavelet transform algorithm or a Hilbert-Huang transform algorithm after receiving the vibration signal, so as to obtain a special frequency band and a fault characteristic frequency; the third control module 114 is used to control the start of the lifting device 13 according to the fourth control instruction when receiving a fourth control instruction input by the user, so as to drive the hydraulic device 6 to rise or fall; the display module 115 is used to receive the vibration signal and visualize the spectrum and time domain waveform of the vibration signal.

[0031] In the embodiment of the present application, there are two bearing fixing seats 5, including a first bearing fixing seat and a second bearing fixing seat. The first bearing fixing seat is arranged close to the coupling 3, and the second bearing fixing seat is arranged close to the preload device 7. The top of the second bearing fixing seat is provided with at least one reserved hole for fixed installation of the vibration sensing device 9. A detachable connection method is adopted between each bearing fixing seat 5 and the platform 2. A torque sensor is provided in the coupling 3 for real-time detection of the torque change value of the integrated bearing 8 and outputting it to the control panel 11 for inclusion in the vibration monitoring result. The vibration sensing device 9 is configured with an electrically connected filter and signal amplifier. The filter is used to filter the noise signal in the vibration signal, and the signal amplifier is used to amplify the vibration signal.

[0032] In the embodiment of the present application, the output end of the servo motor 1 is connected to the wedge-shaped hole sleeve 4 through a coupling 3 to convey the stable speed of the real-time output. The natural frequency of the servo motor 1 is extracted and separated before the experiment to avoid affecting the experiment. The experimental subject, namely the integrated bearing 8, is installed in the coaxial direction of the main shaft, and the main shaft of the integrated bearing 8 is placed on the matching platform 2, and the reserved connection end of the main shaft of the integrated bearing 8 is tightly matched with the wedge-shaped hole sleeve 4 to ensure power transmission. After the installation is completed, the covering end of the integrated bearing 8 is connected to the bearing fixing seat 5, and the vibration sensing device 9 is installed on the upper covering body of the bearing fixing seat 5 through the reserved hole position. The preload device 7 is installed on the far right, and the axis height is adjusted to be the same as the main shaft axis. The controllable preload force is transmitted through a special three-point preload end.

[0033] In the embodiment of the present application, the above-mentioned structure can be used to conduct a targeted analysis of the degree of influence of a single factor on the vibration of the integrated bearing 8 under multi-variable conditions, or to monitor the comprehensive factors affecting the reliability of the integrated bearing 8 under chaotic conditions of various external loads. The front power system, namely the servo motor 1, can provide a wide range of stable power output to ensure the stable state of the integrated bearing 8 during operation, and its shorter power transmission path ensures the ability of instantaneous power transmission; the bearing fixing seat 5 realizes the convenient replacement of multiple integrated bearings, significantly reduces the time required for detection, and can perform data analysis on products of different models to efficiently extract the vibration failure factors of the integrated bearing 8.

[0034] In the embodiment of the present application, in terms of preload application, the structure in the present application can provide simple axial force and radial load, wherein the axial force is realized by the rear hydraulic device 6 to change the load in a short time, and the radially applied preload can be adjusted by adjusting the bolts of the preload device 7, thereby avoiding overall structural redundancy and effectively improving detection efficiency; at the same time, the vibration sensing device 9 in the present application is arranged in the reserved hole position of the bearing fixing seat 5, which is convenient for installation and replacement. The real-time monitoring data will be synchronously transmitted to the PC end for FFT analysis to collect the defect frequency bands of each component during the operation of the integrated bearing 8. This method effectively shortens the analysis time and improves the monitoring efficiency, saves time for subsequent improvements to the design of the integrated bearing 8, avoids the intermediate steps of data transfer, ensures the user's real-time data monitoring function, and improves the efficiency of the system.

[0035] In the embodiment of the present application, in order to ensure the stability and variability of power output, a high-precision, high-response servo motor 1 is selected. The servo motor 1 can provide a wide range of speed adjustment from low speed to high speed, and at the same time has high torque output capability to adapt to the experimental requirements under different load conditions. The motor controller 12 of the servo motor 1 integrates advanced vector control algorithms, which can adjust the speed and torque of the servo motor 1 in real time to ensure the accuracy and stability of power output during the experiment; a high-precision, high-rigidity coupling 3 is used to ensure the power transmission efficiency and accuracy between the integrated bearing 8 and the output shaft of the servo motor 1. The coupling 3 is designed to be quickly disassembled and installed The installation makes it easy to quickly replace the one-piece bearing 8 under different experimental conditions, thereby improving the experimental efficiency. In addition, the coupling 3 has a built-in high-precision torque sensor, which can monitor the torque changes during power transmission in real time, thereby ensuring the accuracy of the experimental data. The one-piece bearing 8 is made of high-strength, high-precision materials, and its surface is precision machined and hardened to improve its wear resistance and fatigue resistance. The structural design of the one-piece bearing 8 takes into account dynamic balance and thermal stability to ensure stability and precision when running at high speeds. High-precision bearing mounting positions are designed at both ends of the one-piece bearing 8 to ensure the concentricity and stability of the one-piece bearing 8 during operation.

[0036] In the embodiment of the present application, the bearing fixing seat 5 adopts a modular design, which can quickly replace integrated bearings 8 of different models to adapt to diverse experimental needs. The structural design of the platform 2 takes into account rigidity and stability to ensure operational reliability under high load and high speed conditions. The bearing fixing seat 5 has built-in high-precision displacement sensors and pressure sensors, which can monitor the operating status of the bearing in real time and provide support for the comprehensiveness of the experimental data; the pre-tightening device 7 adopts advanced hydraulic and mechanical combination technology, which can accurately control the application of axial force and radial force. The system is designed with an automatic adjustment function, which can automatically adjust the size of the pre-tightening force according to the experimental conditions to ensure the stability and consistency of the pre-tightening force during the experiment. The pre-tightening device 7 is also equipped with high-precision pressure sensors and displacement sensors, which can monitor the application status of the pre-tightening force in real time to provide protection for the accuracy of the experimental data.

[0037] In the embodiment of the present application, the vibration sensing device 9 adopts a high-sensitivity, wide-band acceleration sensor, which can accurately collect vibration signals during the operation of the integrated bearing 8. The vibration sensing device 9 is installed in the reserved hole position of the upper cover of the bearing fixing seat 5 to ensure the accuracy and reliability of the collected vibration signals. The vibration sensing device 9 has a built-in high-precision signal amplifier and filter, which can effectively remove noise signals and improve the quality of vibration signals; the real-time information feedback system adopts advanced data processing algorithms, which can quickly process the collected vibration signals and provide real-time feedback to the operator; the system is designed with a visual interface, which can intuitively display the spectrum and time domain waveform of the vibration signal, so that the operator can monitor the operating status of the integrated bearing 8 in real time. At the same time, the system also has an automatic alarm function. When an abnormal vibration signal is detected, it can issue an alarm in time to remind the operator to take corresponding measures.

[0038] In the embodiment of the present application, preparation before the experiment: before the experiment begins, the system is comprehensively inspected and calibrated to ensure that all equipment is in the best working condition, and the one-piece bearing 8 is pre-treated, including cleaning, lubrication and preheating, to ensure that the operating state of the one-piece bearing 8 is stable during the experiment; the experimental device is accurately installed and debugged to ensure the consistency and repeatability of the experimental conditions; control of the experimental process: during the experiment, the experimental conditions, including speed, load and preload, are accurately controlled by the automated control system. The system can monitor various parameters during the experiment in real time and automatically adjust the experimental conditions according to the preset experimental plan to ensure the accuracy and reliability of the experiment; during the experiment, vibration signals are collected and recorded in real time to provide rich data support for subsequent data analysis; post-experimental processing: after the experiment, the collected data is analyzed and processed in detail, and the characteristic frequency bands and fault characteristic frequencies are extracted. By comparing the data under different experimental conditions, the main factors affecting the reliability of the bearing are analyzed. According to the experimental results, suggestions for improving the design of the one-piece bearing 8 and optimizing the operating conditions are put forward to provide a theoretical basis for improving the service life and reliability of the one-piece bearing 8.

[0039] In the embodiments of the present application, advanced signal processing algorithms, such as wavelet transform and Hilbert-Huang transform, are used to perform multi-scale analysis on the collected vibration signals to extract characteristic frequency bands and fault characteristic frequencies. These algorithms can effectively remove noise signals and improve the extraction accuracy of characteristic frequency bands. By comparing the changes in characteristic frequency bands under different experimental conditions, the main factors affecting the reliability of the bearing are analyzed, and the fault diagnosis method is optimized: combining machine learning and artificial intelligence technology to develop an intelligent fault diagnosis system, which can automatically identify and classify the fault types of the bearing, and predict the development trend of the fault based on the changes in the fault characteristic frequency and characteristic frequency band. The intelligent fault diagnosis system also has a self-learning function, which can continuously optimize the diagnosis model and improve the accuracy and reliability of the diagnosis.

[0040] In the embodiment of the present application, the control algorithm of the servo motor 1 and the design of the coupling 3 are optimized to improve the stability and accuracy of the power output, and advanced dynamic balancing technology and thermal stability design are adopted to ensure the stability and accuracy of the integrated bearing 8 when running at high speed; the structural design of the bearing fixing seat 5 and the preload device 7 is optimized to improve the stability and reliability of the system; high-precision sensors and advanced signal processing algorithms are adopted to ensure the accuracy and reliability of the collected vibration signals; the stability and user-friendliness of the data processing system are improved by optimizing the algorithm and visual interface design of the real-time information feedback system, and advanced data storage and management technologies are adopted to ensure the security and traceability of experimental data.

[0041] In the embodiment of the present application, the vibration sensing device 9 adopts a high-sensitivity, wide-band acceleration sensor, which can accurately collect vibration signals during the operation of the integrated bearing 8. By optimizing the installation position and method of the acceleration sensor, the quality and accuracy of the collected vibration signals are improved; advanced signal processing algorithms, such as wavelet transform and Hilbert-Huang transform, are used to perform multi-scale analysis on the collected vibration signals to improve the extraction accuracy of characteristic frequency bands and fault characteristic frequencies; by optimizing the parameter settings of the signal processing algorithm, the accuracy and reliability of signal processing are further improved, and by combining machine learning and artificial intelligence technology, an intelligent fault diagnosis system is developed. By optimizing the structure and parameter settings of the diagnosis model, the accuracy and reliability of fault diagnosis are improved, and the self-learning function is used to continuously optimize the diagnosis model to further improve the accuracy and reliability of diagnosis.

[0042] In the embodiments of the present application, by optimizing the experimental process and the automated control system, the efficiency and repeatability of the experiment are improved. The modularly designed bearing holder 5 can quickly replace different types of integrated bearings 8, significantly reducing the experimental preparation time. Through the real-time information feedback system, the operator can monitor the various parameters during the experiment in real time and adjust the experimental conditions in time to ensure the smooth progress of the experiment; by optimizing the data processing algorithm and the visual interface design, the efficiency and user-friendliness of data processing are improved, and advanced data storage and management technologies are adopted to ensure the rapid storage and retrieval of experimental data. Through the intelligent fault diagnosis system, the fault types of bearings can be quickly identified and classified, and the efficiency and accuracy of fault diagnosis are improved; by optimizing the system structure design, the maintenance efficiency and reliability of the system are improved. The modularly designed components can be quickly replaced and repaired, significantly reducing the system maintenance time. Through the real-time monitoring system, potential problems in the system can be discovered in time, and maintenance measures can be taken in advance to ensure the stable operation of the system.

[0043] In the embodiment of the present application, vibration signal monitoring and post-processing are performed for a small integrated bearing 8, the servo motor 1 transmits appropriate power through the motor controller 12, and the coupling 3 drives the wedge-shaped hole sleeve 4 to fix the integrated bearing 8, wherein the bearing fixing seat 5 adopts two sets of modular settings, one section supports the front end of the main shaft of the integrated bearing 8, and the other section serves as the supporting body of the integrated bearing 8, and is equipped with a vibration sensing device 9. After the clamping is completed, the rear end pre-tightening device 7 is activated, wherein the hydraulic device 7 uses a hydraulic cylinder to push the triangular pressure head to the working surface, providing axial pre-tightening pressure for the integrated bearing 8.

[0044] In the embodiment of the present application, the servo motor 1 is provided with a limit protection measure consisting of a control panel 11, a bearing fixing seat 5 and a preload device 7. The limit sensor collects signals from various parts and amplifies the power ratio through a 4-20mA current command signal through the control panel 11. Under the premise of ensuring safety, the integrated bearing 8 outputs power for vibration detection. By adjusting the speed through the motor controller 12, the speed requirement can be achieved in a short time, thereby realizing vibration detection and control of the integrated bearing 9.

[0045] In an embodiment of the present application, the top of the pre-tightening device 7 contacts and applies pressure to the axial end of the integrated bearing 8, the lifting device 13 can adjust the height so that the axis of the pre-tightening device 7 is concentric with the integrated bearing 8, and the vibration sensing device 9 and the bearing fixing seat 5 are threadedly connected. In this way, the vibration signal generated by the integrated bearing 8 during the rotation process can be directly transmitted to the control panel 11 in real time and post-processed to output the characteristic damage frequency band.

[0046] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0047] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A vibration monitoring system for an integrated bearing, characterized in that: include: A servo motor is fixedly mounted on the platform, wherein a coupling is sleeved on the output shaft of the servo motor, one end of the coupling is fixedly connected to the output shaft, and the other end of the coupling is fixedly connected to the wedge-shaped hole sleeve; A plurality of bearing fixing seats are fixedly mounted on the platform and arranged in sequence along the axial direction of the output shaft; a hydraulic device, fixedly mounted on the platform and located in the axial direction of the output shaft, wherein a retractable pre-tightening device is provided at one end of the hydraulic device facing the servo motor; An integrated bearing, one end of which passes through each of the bearing fixing seats in sequence and is fixedly connected to the wedge-shaped hole sleeve, and the other end of which is abutted and fixed to the preload device; At least one vibration sensing device, fixedly mounted on any one of the bearing fixing seats, for detecting and outputting a vibration signal of the integrated bearing in real time; a power supply device, fixedly mounted on the platform and electrically connected to the servo motor, the hydraulic device and the vibration sensing device respectively; A control panel is mounted on the platform, electrically connected to the power supply device, and communicatively connected to the servo motor, the hydraulic device, and the vibration sensing device, and is used to control the hydraulic device to drive the preload device to abut against the integrated bearing, and to control the servo motor to drive the integrated bearing to rotate, and to obtain a special frequency band and a fault characteristic frequency as a vibration monitoring result based on the vibration signal analysis.

2. The vibration monitoring system according to claim 1, characterized in that It also includes a motor controller, which is fixedly mounted on the platform and electrically connected to the servo motor and the power supply device respectively. When the motor controller receives an external input speed control instruction, it adjusts the real-time speed of the output shaft to the expected speed contained in the speed control instruction.

3. The vibration monitoring system according to claim 1, characterized in that The control panel includes: A first control module is configured to control and activate the hydraulic device according to a first control instruction input by a user, so as to drive the pre-tightening device to extend and clamp the integrated bearing; or Upon receiving a second control instruction, controlling and starting the hydraulic device according to the second control instruction to drive the preload device to retract and release the integrated bearing; a second control module, configured to control and start the servo motor according to the third control instruction when receiving a third control instruction input by a user, so as to drive the integrated bearing to rotate; The data analysis module is used to perform multi-scale analysis on the vibration signal by using a wavelet transform algorithm or a Hilbert-Huang transform algorithm after receiving the vibration signal to obtain the special frequency band and the fault characteristic frequency.

4. The vibration monitoring system according to claim 1, characterized in that It also includes a lifting device, which is fixedly installed on the platform and located below the hydraulic device, electrically connected to the power supply device and communicatively connected to the control panel. The control panel also includes a third control module, which is used to control the activation of the lifting device according to the fourth control instruction when receiving a fourth control instruction input by the user, so as to drive the hydraulic device to rise or fall.

5. The vibration monitoring system according to claim 1, characterized in that: The control panel also includes a display module for receiving the vibration signal and visually displaying the frequency spectrum and time domain waveform of the vibration signal.

6. The vibration monitoring system according to claim 1, characterized in that There are two bearing fixing seats, including a first bearing fixing seat and a second bearing fixing seat. The first bearing fixing seat is arranged close to the coupling, and the second bearing fixing seat is arranged close to the preload device.

7. The vibration monitoring system according to claim 6, characterized in that: At least one reserved hole is formed on the top of the second bearing fixing seat for fixing and installing the vibration sensor device.

8. The vibration monitoring system according to claim 1, characterized in that: Each bearing fixing seat and the platform are connected in a detachable manner.

9. The vibration monitoring system according to claim 1, characterized in that: A torque sensor is provided in the coupling and is in communication with the control panel for detecting the torque change value of the integrated bearing in real time and outputting it to the control panel for inclusion in the vibration monitoring result.

10. The vibration monitoring system according to claim 1, characterized in that: The vibration sensing device is provided with an electrically connected filter and a signal amplifier. The filter is used to filter the noise signal in the vibration signal, and the signal amplifier is used to amplify the vibration signal.

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