Bearing fault experiment platform based on multi-sensor information fusion
The bearing fault experimental platform, which integrates temperature, vibration, and noise sensors and combines them with an adaptive fusion algorithm, solves the noise pollution problem in bearing fault diagnosis under single sensor conditions and achieves efficient and accurate bearing fault identification.
Patent Information
- Application Number
- CN202520412818.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Existing bearing fault diagnosis methods are limited to data acquisition from a single sensor. The signal is susceptible to noise contamination and information loss, resulting in a low signal-to-noise ratio for fault features. This makes it difficult to extract fault features, especially under dynamic noise conditions where the identification lag time increases.
A bearing fault experimental platform employing multi-sensor information fusion integrates temperature, vibration, and noise sensors. Through multi-channel signal acquisition and adaptive fusion algorithms, combined with deep learning and adaptive mechanisms, feature weights are adjusted to improve fault identification accuracy.
It enables efficient and accurate diagnosis of bearing faults under complex working conditions, reduces diagnostic costs, has a simple structure, a wide range of applications, and a simple signal acquisition process, and can reflect the bearing operating status in real time.
Smart Images
Figure CN223741989U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to bearing fault diagnosis equipment technical field relates to a kind of bearing fault experimental platform of multi-sensor information fusion. BACKGROUND
[0002] Bearing plays a vital role in rotating machinery, with high frequency of use and prone to failure, bearing as the core support component of rotating machinery, the easy-to-break characteristic caused by its high frequency use makes fault diagnosis become the key link of equipment reliability management, once bearing fails, it may cause equipment downtime, production efficiency decline, and even cause safety accidents, when bearing operates under complex conditions such as high temperature, high humidity and strong electromagnetic interference, the signal source of single sensor is easy to be polluted by noise, there are problems of information loss and low fault characteristic signal-to-noise ratio, which makes it difficult to extract fault characteristics, and the authenticity of collected fault signals needs to be evaluated, which is not conducive to the follow-up study of bearing failure, therefore, it is particularly important to accurately and efficiently diagnose bearing faults.
[0003] The existing bearing fault diagnosis is limited to single sensor data acquisition, under the promotion of industrial internet, multi-sensor fusion technology can utilize the statistical independence of sensor observation noise, reduce the uncertainty of device through redundant information fusion, integrate the redundant observation information between multiple sensors, not only reduce the uncertainty of device, but also significantly expand the observation range of device, thereby improve the accuracy and reliability of device, however, in strong observation noise environment, the feature extraction error rate increases sharply, especially under dynamic noise condition, the fault recognition lag time of fixed parameter fusion device will increase significantly. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing bearing fault experimental platform of multi-sensor information fusion, solves the problem of bearing fault diagnosis limited to single sensor data acquisition in prior art.
[0005] The utility model adopts technical scheme, bearing fault experimental platform of multi-sensor information fusion, including test seat, first through -hole is set up in test seat one side, first through -hole outside is fixed with flange plate, motor is fixed on flange plate and the output shaft of motor is inserted into the inside of test seat through first through -hole, second through -hole is set up in the adjacent side of first through -hole on test seat;It also includes transmission device, transmission device is inserted into the inside of test seat from second through -hole and is connected with the output shaft of motor, transmission device is connected with main shaft assembly and main shaft assembly is fixed on the outside of test seat, temperature sensor and vibration sensor are arranged on main shaft assembly, and noise sensor is fixed on the opposite side of first through -hole on test seat.
[0006] The utility model has the characteristics that:
[0007] The test fixture includes a base plate, on which four fixing plates are fixedly arranged in a square. A flange plate is fixed to one of the fixing plates by several screws.
[0008] The spindle assembly includes a spindle, a first limiting seat is fitted on the spindle near the first through hole, a sealing ring is engaged on the side of the first limiting seat away from the first through hole, the sealing ring is in contact with the first limiting seat, a first bearing is fixed on the side of the sealing ring away from the first limiting seat, the first bearing is in contact with the sealing ring; a second bearing is also fixed on the spindle, a second limiting seat is fitted on the side of the second bearing away from the first bearing, a gun drill is installed at the end of the spindle away from the first through hole, a spindle housing is provided to enclose the first limiting seat, sealing ring, first bearing, second bearing, and second limiting seat, and a spindle cover is installed on the side of the spindle housing near the gun drill by several screws.
[0009] A lock nut and a spring clip are installed at the end of the spindle away from the first through hole, and the lock nut and the spring clip are respectively connected to the gun drill.
[0010] The transmission device includes a pulley, which is fixed on the output shaft of the motor. A conveyor belt is connected between the pulley and the main shaft, and the conveyor belt passes through the main shaft housing.
[0011] Both the temperature sensor and the vibration sensor are fixed on the spindle housing.
[0012] A first fixing block is provided on the top of the flange plate, close to the flange plate, and the first fixing block is connected to the test base by several screws; a second fixing block is provided on one side of the flange plate, close to the flange plate, and the second fixing block is connected to the test base by several screws.
[0013] The bottom of the spindle assembly on the test stand has a groove, in which a third fixing block is engaged. Part of the third fixing block is located outside the groove and is close to the spindle housing.
[0014] Gun drills are deep hole drills.
[0015] The beneficial effects of this utility model are:
[0016] This invention employs multiple sensors to acquire multi-channel signals from the bearing during operation. This allows for comparison of the tested bearing's signals with those from experimental data, historical data, or simulation models of bearings in normal operation, thereby analyzing whether the bearing has malfunctioned. Compared to signals acquired by a single sensor, multi-channel, multi-directional signals are more comprehensive and better reflect the bearing's operating status. Multi-sensor information fusion effectively improves the accuracy of bearing fault identification. The sensor layout can be adjusted according to different spindles, significantly reducing diagnostic costs. The structure is simple, the signal acquisition process is convenient, it has low requirements for the measurement environment, is adjustable under various operating conditions, and has a wide range of applications.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is the structural diagram of the utility model;
[0018] Figure 2 is the structural diagram of the utility seat in the utility model;
[0019] Figure 3 is the sectional view of the main shaft assembly in the utility model;
[0020] Figure 4 is the structural diagram of the main shaft assembly in the utility model;
[0021] Figure 5 is the top view of the utility model;
[0022] Figure 6 is the sectional view of the utility model;
[0023] Figure 7 is the side view of the utility model.
[0024] In the drawing, 1. test seat, 101. bottom plate, 102. fixed plate, 2. flange plate, 3. motor, 4. main shaft assembly, 401. first bearing, 402. sealing ring, 403. first limit seat, 404. main shaft shell, 405. main shaft, 406. main shaft cover, 407. second limit seat, 408. locking nut, 409. spring clamp, 410. gun drill, 411. second bearing, 5. transmission device, 51. transmission belt, 52. pulley, 6. first through hole, 7. first fixed block, 8. second fixed block, 9. third fixed block, 10. second through hole, 11. temperature sensor, 12. noise sensor, 13. vibration sensor, 14. groove. DETAILED DESCRIPTION
[0025] The utility model will be explained in detail below in combination with the drawings and specific embodiment.
[0026] The bearing fault experimental platform of multi-sensor information fusion refers to Figure 1 and Figure 2 , including test seat 1, test seat 1 side is set up with first through hole 6, first through hole 6 outside is fixed with flange plate 2, and the output shaft of motor 3 is fixed on flange plate 2 and passes through first through hole 6 and extends into test seat 1 inside, and the adjacent side of first through hole 6 on test seat 1 is set up with second through hole 10;Still including transmission device 5, transmission device 5 from second through hole 10 place extends into test seat 1 inside and is connected with the output shaft of motor 3, and transmission device 5 is connected with main shaft assembly 4 and is fixed on the outside of test seat 1, and main shaft assembly 4 is provided with temperature sensor 11 and vibration sensor 13, and the opposite side of first through hole 6 on test seat 1 is fixed with noise sensor 12.
[0027] The test seat 1 comprises a bottom plate 101, and four fixed plates 102 are fixed on the surface of the bottom plate 101 in sequence to form a square. The flange plate 2 is fixed on one of the fixed plates 102 by screws.
[0028] With reference to Figure 3 and Figure 4 , the main shaft assembly 4 comprises a main shaft 405, a first limiting seat 403 sleeved on the main shaft 405 and close to the first through hole 6, a sealing ring 402 clamped on one side of the main shaft 405 away from the first limiting seat 403, the sealing ring 402 being in abutment with the first limiting seat 403, a first bearing 401 fixed on one side of the main shaft 405 away from the sealing ring 402, the first bearing 401 being in abutment with the sealing ring 402, a second bearing 411 fixed on the main shaft 405, a second limiting seat 407 sleeved on one side of the main shaft 405 away from the first bearing 401, a gun drill 410 mounted on one end of the main shaft 405 away from the first through hole 6, and a main shaft shell 404 wrapping the first limiting seat 403, the sealing ring 402, the first bearing 401, the second bearing 411 and the second limiting seat 407, the main shaft shell 404 being provided with a main shaft cover 406 mounted on one side of the main shaft shell 404 close to the gun drill 410 by screws, a locking nut 408 and a spring clamp 409 mounted on one end of the main shaft 405 away from the first through hole 6, and the locking nut 408 and the spring clamp 409 being connected with the gun drill 410 respectively.
[0029] With reference to Figure 5 and Figure 6 , the transmission device 5 comprises a belt pulley 52 fixed on the output shaft of the motor 3, a transmission belt 51 connected between the belt pulley 52 and the main shaft 405, the transmission belt 51 penetrating through the main shaft shell 404, and the temperature sensor 11 and the vibration sensor 13 being fixed on the main shaft shell 404, with reference to Figure 7 , the flange plate 2 is provided with a first fixed block 7 close to the flange plate 2 at the top, the first fixed block 7 being connected with the test seat 1 by screws; the flange plate 2 is provided with a second fixed block 8 close to the flange plate 2 at one side, the second fixed block 8 being connected with the test seat 1 by screws, the test seat 1 is provided with a groove 14 at the bottom of the main shaft assembly 4, and a third fixed block 9 is clamped in the groove 14, a part of the third fixed block 9 being located outside the groove 14 and close to the main shaft shell 404, and the gun drill 410 is a deep hole drill bit.
[0030] The first bearing 401 and the second bearing 411 can rotate with the main shaft 405, or a plurality of first bearings 401 and a plurality of second bearings 411 can be fixed on the main shaft 405 to rotate with the main shaft 405, and at least two bearings are needed; the power can be output from the motor 3 to the main shaft 405 through the transmission belt 51; the locking nut 408 is used for pre-tightening the gun drill 410, and the spring clamp 409 is used for limiting the position of the gun drill 410; during installation, the spring clamp 409 is first installed in the main shaft 405, then the gun drill 410 is installed in the spring clamp 409, and after the working length of the gun drill 410 is ensured, the locking nut 408 is screwed in; the gun drill 410 is selected as an experimental object, the experimental scene is arranged conveniently, and then the information collection of the bearing is better carried out; the first fixed block 7 and the second fixed block 8 are used for fixing the motor 3 and the flange plate 2, adjusting the position of the flange plate 2, and ensuring the tension of the transmission belt 51; the temperature sensor 11 and the vibration sensor 13 are both magnetic adsorption sensors, which can more conveniently collect the temperature signals and vibration signals of the two bearings, and better analyze the running state and fault type of the bearing; the operator can adjust the type of the main shaft 405 according to the actual situation, change the positions of the temperature sensor 11, the noise sensor 12 and the vibration sensor 13, and thus the running state of the bearing can be detected in real time; when a certain bearing fails, an abnormal signal is generated, and all bearings can be disassembled and checked one by one; through the sensors, the characteristic indexes of the bearing signals can be extracted in real time, and then the fault state of the bearing is analyzed.
[0031] The utility model can collect multi-channel signals of the bearing in operation through multiple sensors, can combine deep learning and self-adaptive mechanism, introduce a self-adaptive fusion algorithm, adjust feature weights according to dynamic noise environment, improve robustness, enhance the precision and effectiveness of the collected information, can extract time domain, frequency domain and time-frequency characteristics through the collected vibration signals, and compare and analyze the normal signals of the healthy bearing, the normal signals come from experimental data, historical data or simulation models, the comparison process can be based on feature extraction and pattern recognition, and through threshold method, statistical analysis or machine learning algorithm, whether the feature significantly deviates from the normal range is judged, so that the bearing fault is accurately and efficiently diagnosed, compared with the signals collected by placing a single sensor on the bearing, the signals collected in multiple channels and multiple directions are more comprehensive and can better reflect the running state of the bearing to be measured.
[0032] Embodiment 1
[0033] The bearing fault experiment platform of multi-sensor information fusion comprises a test seat 1, a first through hole 6 is formed on one side of the test seat 1, a flange plate 2 is fixed outside the first through hole 6, a motor 3 is fixed on the flange plate 2 and the output shaft of the motor 3 extends into the test seat 1 through the first through hole 6, a second through hole 10 is formed on the side adjacent to the first through hole 6 of the test seat 1; the bearing fault experiment platform further comprises a transmission device 5, the transmission device 5 extends into the test seat 1 from the second through hole 10 and is connected with the output shaft of the motor 3, a main shaft assembly 4 is connected with the transmission device 5 and is fixed outside the test seat 1, a temperature sensor 11 and a vibration sensor 13 are arranged on the main shaft assembly 4, and a noise sensor 12 is fixed on the side opposite to the first through hole 6 of the test seat 1.
[0034] The test seat 1 comprises a bottom plate 101, four fixed plates 102 are fixed on the surface of the bottom plate 101 and are sequentially spliced into a square, and the flange plate 2 is fixed on one of the fixed plates 102 by four screws.
[0035] The main shaft assembly 4 comprises a main shaft 405, a first limiting seat 403 is sleeved on the main shaft 405 and is located close to the first through hole 6, a sealing ring 402 is clamped on the side of the first limiting seat 403 away from the first through hole 6, the sealing ring 402 is in abutment with the first limiting seat 403, a first bearing 401 is fixed on the side of the sealing ring 402 away from the first limiting seat 403, and the first bearing 401 is in abutment with the sealing ring 402; a second bearing 411 is further fixed on the main shaft 405, a second limiting seat 407 is sleeved on the side of the second bearing 411 away from the first bearing 401, a gun drill 410 is installed on the end of the main shaft 405 away from the first through hole 6, the first limiting seat 403, the sealing ring 402, the first bearing 401, the second bearing 411 and the second limiting seat 407 are wrapped to form a main shaft shell 404, a main shaft cover 406 is installed on the side of the main shaft shell 404 close to the gun drill 410 by four screws, a locking nut 408 and a spring clamp 409 are installed on the end of the main shaft 405 away from the first through hole 6, and the locking nut 408 and the spring clamp 409 are connected with the gun drill 410 respectively.
[0036] The transmission device 5 comprises a belt pulley 52, the belt pulley 52 is fixed on the output shaft of the motor 3, a transmission belt 51 is connected between the belt pulley 52 and the main shaft 405, and the transmission belt 51 penetrates through the main shaft shell 404.
[0037] Embodiment 2:
[0038] The bearing fault experiment platform of multi-sensor information fusion comprises a test seat 1, a first through hole 6 is formed on one side of the test seat 1, a flange plate 2 is fixed outside the first through hole 6, a motor 3 is fixed on the flange plate 2 and the output shaft of the motor 3 extends into the test seat 1 through the first through hole 6, a second through hole 10 is formed on the side adjacent to the first through hole 6 on the test seat 1; the bearing fault experiment platform further comprises a transmission device 5, the transmission device 5 extends into the test seat 1 from the second through hole 10 and is connected with the output shaft of the motor 3, a main shaft assembly 4 is connected with the transmission device 5 and is fixed outside the test seat 1, a temperature sensor 11 and a vibration sensor 13 are arranged on the main shaft assembly 4, and a noise sensor 12 is fixed on the side opposite to the first through hole 6 on the test seat 1.
[0039] The main shaft assembly 4 comprises a main shaft 405, a first limiting seat 403 is sleeved on the main shaft 405 at a position close to the first through hole 6, a sealing ring 402 is clamped on the side of the main shaft 405 away from the first limiting seat 403, the sealing ring 402 is in abutment with the first limiting seat 403, a first bearing 401 is fixed on the side of the main shaft 405 away from the sealing ring 402, and the first bearing 401 is in abutment with the sealing ring 402; a second bearing 411 is further fixed on the main shaft 405, a second limiting seat 407 is sleeved on the side of the main shaft 405 away from the first bearing 401, a gun drill 410 is installed on the end of the main shaft 405 away from the first through hole 6, the first limiting seat 403, the sealing ring 402, the first bearing 401, the second bearing 411 and the second limiting seat 407 are wrapped with a main shaft shell 404, the side of the main shaft shell 404 close to the gun drill 410 is installed with a main shaft cover 406 through five screws, and the temperature sensor 11 and the vibration sensor 13 are both fixed on the main shaft shell 404.
[0040] A first fixing block 7 is arranged on the top of the flange plate 2 and close to the flange plate 2, the first fixing block 7 is connected with the test seat 1 through six screws; a second fixing block 8 is arranged on one side of the flange plate 2 and close to the flange plate 2, and the second fixing block 8 is connected with the test seat 1 through four screws.
[0041] Embodiment 3
[0042] The bearing fault experiment platform of multi-sensor information fusion comprises a test seat 1, a first through hole 6 is formed on one side of the test seat 1, a flange plate 2 is fixed outside the first through hole 6, a motor 3 is fixed on the flange plate 2 and the output shaft of the motor 3 extends into the test seat 1 through the first through hole 6, a second through hole 10 is formed on the side adjacent to the first through hole 6 on the test seat 1; the bearing fault experiment platform further comprises a transmission device 5, the transmission device 5 extends into the test seat 1 from the second through hole 10 and is connected with the output shaft of the motor 3, a main shaft assembly 4 is connected with the transmission device 5 and is fixed outside the test seat 1, a temperature sensor 11 and a vibration sensor 13 are arranged on the main shaft assembly 4, and a noise sensor 12 is fixed on the side opposite to the first through hole 6 on the test seat 1.
[0043] The test seat 1 comprises a bottom plate 101, four fixed plates 102 are fixed on the surface of the bottom plate 101 and are sequentially spliced into a square, and the flange plate 2 is fixed on one of the fixed plates 102 by four screws.
[0044] The main shaft assembly 4 comprises a main shaft 405, a first limiting seat 403 is sleeved on the main shaft 405 and close to the first through hole 6, a sealing ring 402 is connected to the side of the main shaft 405 away from the first limiting seat 403, the sealing ring 402 is in close contact with the first limiting seat 403, a first bearing 401 is fixed on the side of the main shaft 405 away from the sealing ring 402, and the first bearing 401 is in close contact with the sealing ring 402; a second bearing 411 is also fixed on the main shaft 405, a second limiting seat 407 is sleeved on the side of the main shaft 405 away from the first bearing 401, a gun drill 410 is installed on the end of the main shaft 405 away from the first through hole 6, the main shaft 405 is wrapped with the first limiting seat 403, the sealing ring 402, the first bearing 401, the second bearing 411 and the second limiting seat 407 to form a main shaft shell 404, and the side of the main shaft shell 404 close to the gun drill 410 is installed with a main shaft cover 406 by six screws; the transmission device 5 comprises a belt pulley 52, the belt pulley 52 is fixed on the output shaft of the motor 3, a transmission belt 51 is connected between the belt pulley 52 and the main shaft 405, and the transmission belt 51 penetrates through the main shaft shell 404.
[0045] Embodiment 4:
[0046] The bearing fault experiment platform based on multi-sensor information fusion comprises a test seat 1, a first through hole 6 is formed in one side of the test seat 1, a flange plate 2 is fixed outside the first through hole 6, a motor 3 is fixed on the flange plate 2 and the output shaft of the motor 3 penetrates through the first through hole 6 and extends into the test seat 1, and a second through hole 10 is formed in the side adjacent to the first through hole 6 of the test seat 1; the bearing fault experiment platform further comprises a transmission device 5, the transmission device 5 extends into the test seat 1 from the second through hole 10 and is connected with the output shaft of the motor 3, a main shaft assembly 4 is connected with the transmission device 5 and is fixed outside the test seat 1, a temperature sensor 11 and a vibration sensor 13 are arranged on the main shaft assembly 4, and a noise sensor 12 is fixed on the side opposite to the first through hole 6 of the test seat 1.
[0047] The main shaft assembly 4 comprises a main shaft 405, a first limiting seat 403 sleeved on the main shaft 405 close to the first through hole 6, a sealing ring 402 clamped on one side of the main shaft 405 away from the first limiting seat 403, the sealing ring 402 being in abutment with the first limiting seat 403, a first bearing 401 fixed on one side of the main shaft 405 away from the sealing ring 402, the first bearing 401 being in abutment with the sealing ring 402, a second bearing 411 also fixed on the main shaft 405, a second limiting seat 407 sleeved on one side of the main shaft 405 away from the first bearing 401, a gun drill 410 mounted on one end of the main shaft 405 away from the first through hole 6, the first limiting seat 403, the sealing ring 402, the first bearing 401, the second bearing 411 and the second limiting seat 407 being wrapped with a main shaft shell 404, the main shaft shell 404 being provided with a main shaft cover 406 on one side close to the gun drill 410 through four screws, a locking nut 408 and a spring clamp 409 being mounted on one end of the main shaft 405 away from the first through hole 6, the locking nut 408 and the spring clamp 409 being connected with the gun drill 410 respectively, a first fixed block 7 being provided on the top of the flange plate 2 close to the flange plate 2, the first fixed block 7 being connected with the test seat 1 through five screws, a second fixed block 8 being provided on one side of the flange plate 2 close to the flange plate 2, the second fixed block 8 being connected with the test seat 1 through five screws, the gun drill 410 being a deep hole drill bit.
[0048] Embodiment 5:
[0049] The bearing fault experimental platform of multi-sensor information fusion comprises a test seat 1, a first through hole 6 is formed on one side of the test seat 1, a flange plate 2 is fixed on the outside of the first through hole 6, a motor 3 is fixed on the flange plate 2 and the output shaft of the motor 3 extends into the inside of the test seat 1 through the first through hole 6, a second through hole 10 is formed on the side adjacent to the first through hole 6 on the test seat 1; a transmission device 5 extends into the inside of the test seat 1 from the second through hole 10 and is connected with the output shaft of the motor 3, a main shaft assembly 4 is connected with the transmission device 5 and is fixed on the outside of the test seat 1, a temperature sensor 11 and a vibration sensor 13 are arranged on the main shaft assembly 4, and a noise sensor 12 is fixed on the side opposite to the first through hole 6 on the test seat 1.
[0050] The test seat 1 comprises a bottom plate 101, four fixed plates 102 are fixed on the surface of the bottom plate 101 and are sequentially spliced into a square, and the flange plate 2 is fixed on one of the fixed plates 102 through four screws.
[0051] The main shaft assembly 4 comprises a main shaft 405, a first limiting seat 403 sleeved on the main shaft 405 close to the first through hole 6, a sealing ring 402 clamped on one side of the main shaft 405 away from the first limiting seat 403, the sealing ring 402 being in abutment with the first limiting seat 403, a first bearing 401 fixed on one side of the main shaft 405 away from the sealing ring 402, the first bearing 401 being in abutment with the sealing ring 402, a second bearing 411 also fixed on the main shaft 405, a second limiting seat 407 sleeved on one side of the main shaft 405 away from the first bearing 401, a gun drill 410 mounted on one end of the main shaft 405 away from the first through hole 6, the first limiting seat 403, the sealing ring 402, the first bearing 401, the second bearing 411 and the second limiting seat 407 being wrapped with a main shaft shell 404, the main shaft shell 404 being provided with a main shaft cover 406 on one side close to the gun drill 410 through six screws, and the gun drill 410 being a deep hole drill bit.
[0052] Embodiment 6:
[0053] The bearing fault experiment platform based on multi-sensor information fusion comprises a test seat 1, a first through hole 6 is formed on one side of the test seat 1, a flange plate 2 is fixed outside the first through hole 6, a motor 3 is fixed on the flange plate 2 and the output shaft of the motor 3 extends into the test seat 1 through the first through hole 6, and a second through hole 10 is formed on the test seat 1 adjacent to the first through hole 6; the bearing fault experiment platform further comprises a transmission device 5, the transmission device 5 extends into the test seat 1 from the second through hole 10 and is connected with the output shaft of the motor 3, a main shaft assembly 4 is connected with the transmission device 5 and fixed outside the test seat 1, a temperature sensor 11 and a vibration sensor 13 are arranged on the main shaft assembly 4, and a noise sensor 12 is fixed on the test seat 1 opposite to the first through hole 6.
[0054] The test seat 1 comprises a bottom plate 101, four fixed plates 102 are fixed on the surface of the bottom plate 101 and sequentially spliced into a square, the flange plate 2 is fixed on one of the fixed plates 102 through five screws, a first fixed block 7 is arranged on the top of the flange plate 2 close to the flange plate 2, and the first fixed block 7 is connected with the test seat 1 through four screws; a second fixed block 8 is arranged on one side of the flange plate 2 close to the flange plate 2, and the second fixed block 8 is connected with the test seat 1 through five screws.
Claims
1. A bearing fault experimental platform for multi-sensor information fusion, characterized in that, The utility model provides a test seat, the test seat (1) one side is provided with first through -hole (6), first through -hole (6) outside fixed flange plate (2), the motor (3) is fixed on flange plate (2) and the output shaft of motor (3) passes through first through -hole (6) and extends into test seat (1) inside, and the second through -hole (10) is provided on the adjacent side of first through -hole (6) on test seat (1), the utility model also provides a transmission device (5), transmission device (5) from the second through -hole (10) extends into test seat (1) inside and is connected with the output shaft of motor (3), transmission device (5) is connected with main shaft assembly (4) and the main shaft assembly (4) is fixed on the outside of test seat (1), and temperature sensor (11) and vibration sensor (13) are arranged on main shaft assembly (4), and noise sensor (12) is fixed on the opposite side of first through -hole (6) on test seat (1).
2. The multi-sensor information fusion bearing fault experimental platform according to claim 1, characterized in that, The test seat (1) comprises a bottom plate (101), and four fixed plates (102) are fixed on the surface of the bottom plate (101) and are sequentially connected to form a square.
3. The multi-sensor information fusion bearing fault experimental platform according to claim 1, characterized in that, The main shaft assembly (4) comprises a main shaft (405), a first limiting seat (403) is sleeved on the main shaft (405) and is located close to the first through -hole (6), a sealing ring (402) is clamped on the side of the main shaft (405) away from the first limiting seat (403), the sealing ring (402) is attached to the first limiting seat (403), a first bearing (401) is fixed on the side of the main shaft (405) away from the sealing ring (402), and the first bearing (401) is attached to the sealing ring (402); a second bearing (411) is further fixed on the main shaft (405), a second limiting seat (407) is sleeved on the side of the main shaft (405) away from the second bearing (411), and a gun drill (410) is installed on the end of the main shaft (405) away from the first through -hole (6); the first limiting seat (403), the sealing ring (402), the first bearing (401), the second bearing (411), and the second limiting seat (407) are wrapped in a main shaft shell (404), and a main shaft cover (406) is installed on the side of the main shaft shell (404) close to the gun drill (410) through a plurality of screws.
4. The multi-sensor information fusion bearing fault experimental platform according to claim 3, characterized in that, The end of the main shaft (405) away from the first through -hole (6) is provided with a locking nut (408) and a spring clamp (409), and the locking nut (408) and the spring clamp (409) are connected with the gun drill (410) respectively.
5. The experimental platform for bearing fault diagnosis using multi-sensor information fusion of claim 3, wherein, The transmission device (5) comprises a belt wheel (52), the belt wheel (52) is fixed on the output shaft of the motor (3), a conveyor belt (51) is connected between the belt wheel (52) and the main shaft (405), and the conveyor belt (51) penetrates through the main shaft shell (404).
6. The experimental platform for bearing fault diagnosis using multi-sensor information fusion according to any one of claims 3-5, characterized in that, The temperature sensor (11) and the vibration sensor (13) are both fixed on the main shaft shell (404).
7. The experimental platform for bearing fault diagnosis using multi-sensor information fusion according to any one of claims 1-5, characterized in that, The first fixing block (7) is arranged on the top of the flange plate (2) and connected with the test seat (1) through screws.
8. The experimental platform for bearing fault diagnosis using multi-sensor information fusion according to any one of claims 3-5, characterized in that, The third fixing block (9) is arranged in the recess (14) of the main shaft assembly (4) and abuts against the main shaft shell (404).
9. The experimental platform for bearing fault diagnosis using multi-sensor information fusion according to any one of claims 3-5, characterized in that, The gun drill (410) is a deep hole drill.