CN116429422A - High-load and vibration test device and test method for automobile hub bearing - Google Patents
High-load and vibration test device and test method for automobile hub bearing Download PDFInfo
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- CN116429422A CN116429422A CN202310180348.2A CN202310180348A CN116429422A CN 116429422 A CN116429422 A CN 116429422A CN 202310180348 A CN202310180348 A CN 202310180348A CN 116429422 A CN116429422 A CN 116429422A
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- 238000012360 testing method Methods 0.000 title claims abstract description 94
- 238000010998 test method Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 8
- 230000007547 defect Effects 0.000 claims description 7
- 230000001133 acceleration Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 5
- 238000012797 qualification Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 claims description 2
- 238000003556 assay Methods 0.000 claims 5
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
- G01M13/045—Acoustic or vibration analysis
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/04—Thermometers specially adapted for specific purposes for measuring temperature of moving solid bodies
- G01K13/08—Thermometers specially adapted for specific purposes for measuring temperature of moving solid bodies in rotary movement
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
The invention discloses a high-load and vibration test device and a test method for an automobile hub bearing, which relate to the field of hub bearing tests and comprise an L-shaped loading arm, a connecting disc, a brake disc, a hub bearing sample and a hub bearing test machine, wherein one end flange of the hub bearing sample is sequentially connected and fastened with the brake disc and the connecting disc, the connecting disc is driven by the connection of a main shaft of the hub bearing test machine, the other end flange of the hub bearing sample is fixed on a connecting plate, the connecting plate is fixedly connected with the surface of a vertical section of the L-shaped loading arm, a vibration sensor is arranged on the upper end surface of the connecting plate, and a temperature sensor is arranged on the non-rotating end surface of the hub bearing sample; the horizontal section of the L-shaped loading arm is provided with a combined loading point, and the radial and axial loading devices of the hub bearing testing machine are loaded onto the combined loading point together. The invention can comprehensively evaluate the vibration condition of the hub bearing sample, understand the overall vibration level of the hub bearing sample and judge the failure mode and state of the hub bearing sample.
Description
Technical Field
The invention relates to the field of hub bearing tests, in particular to an automobile hub bearing high-load and vibration test device and method.
Background
Hub bearings are one of the key components of an automobile, and their main functions are to carry weight and provide accurate guidance for rotation of the hub, requiring both radial and axial loads. When the hub bearing fails, noise, heating of the bearing and other phenomena are caused, and abnormal vibration is generated, and at present, the load, the temperature and the vibration of the hub bearing unit are usually measured by means of a hub bearing unit testing machine.
For example, chinese patent document (CN 111458055 a) discloses a heavy truck hub bearing temperature monitoring sensor testing machine and testing method, comprising a bracket, a power loading system for driving hub bearing to rotate, a heating system, a signal measuring system and a control system, and further comprising a fixing component for fixing hub bearing, wherein the fixing component comprises a brake disc and a bearing pressing rod surrounded by the heating system; the signal measurement system comprises a wireless temperature sensor arranged on the hub bearing, and a wired temperature sensor and a vibration sensor which are arranged in the inner sleeve of the pressing rod. However, the hub bearing unit testing machine only uses the measured value obtained by the vibration sensor to record the measured value when the vibration measurement is carried out, and the state and the mode of the bearing failure cannot be accurately judged without comprehensive evaluation and calculation.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides an automobile hub bearing high-load and vibration test device and a test method, which can comprehensively evaluate the vibration condition of a hub bearing sample, know the integral vibration level of the sample and judge the failure mode and state of the hub bearing sample.
The invention aims at being completed by the following technical scheme: the high-load and vibration test device for the automobile hub bearing comprises an L-shaped loading arm, a connecting disc, a brake disc, a hub bearing sample and a hub bearing test machine, wherein one end flange of the hub bearing sample is sequentially connected and fastened with the brake disc and the connecting disc, the connecting disc is driven by a main shaft of the hub bearing test machine, the other end flange of the hub bearing sample is fixed on a connecting plate, the connecting plate is fixedly connected with the surface of a vertical section of the L-shaped loading arm, a vibration sensor is arranged on the upper end surface of the connecting plate, and a temperature sensor is arranged on a non-rotating end surface of the hub bearing sample; the horizontal section of the L-shaped loading arm is provided with a combined loading point, the radial loading device and the axial loading device of the hub bearing testing machine are loaded onto the combined loading point together, and radial loading and axial loading are applied to the combined loading point.
As a further technical scheme, the distance from the combined loading point to the center of the main shaft, namely the axial loading moment arm, is equal to the radius R of the wheel in the real vehicle, the combined loading point is collinear with the wheel center line of the wheel, and the distance from the wheel center line to the end face of the brake disc is equal to the radial loading offset distance ET.
As a further technical scheme, the installation direction of the vibration sensor is consistent with the radial loading direction.
The test method adopting the high-load and vibration test device for the automobile hub bearing comprises the following steps:
the first step: building a test device: the method comprises the steps of installing a hub bearing sample and an L-shaped loading arm on a hub bearing testing machine, ensuring that an axial loading arm is equal to a wheel radius R, simultaneously, a radial loading offset distance ET is equal to the distance from a wheel center line to the end face of a brake disc, installing a vibration sensor on the upper end face of a connecting plate, and enabling the installation direction of the vibration sensor to be consistent with the radial loading direction;
and a second step of: setting test parameters: setting the main shaft rotating speed of the hub bearing testing machine, namely the test rotating speed n, setting the radial load Fr and the axial load Fa, starting a loading test, and collecting an original signal value output by a vibration sensor;
and a third step of: vibration value calculation: filtering the original signal value obtained in the second step to obtain a required vibration value, and then solving the root mean square value G-RMS;
fourth step: and (5) qualification judgment: stopping the test when the test is carried out to a set time or at least one of the vibration sensor and the temperature sensor sends out an alarm signal, and detaching the hub bearing sample for inspection to judge the qualification of the test.
As a further technical solution, in the second step, the test rotation speed n=v×1000/(2pi×r×60), where v is the actual vehicle speed, unit km/h, and R is the wheel radius; radial load fr=w/2+w+g×h/L, where W is the axial weight, g is the lateral acceleration coefficient, H is the center of gravity height, L is the track, both measured by a real vehicle; axial load fs=fr×g, and Fs has two opposite loading directions, fs1 and Fs2, respectively, fs1 being the load in the inward direction and Fs2 being the load in the outward direction.
In the second step, the hub bearing sample has the following three loading states, namely:
(1) no radial and axial loading exists, and only the main shaft of the hub bearing testing machine provides a test rotating speed n;
(2) applying radial load Fr, and simultaneously providing test rotating speed n for a main shaft of the hub bearing tester;
(3) applying an inward steering axial load Fs with a lateral acceleration coefficient of 0.5g, simultaneously applying a radial load Fr, and providing a test rotating speed n by a main shaft of the hub bearing tester;
as a further technical solution, vibration values corresponding to three test conditions are measured and obtained in the third step for the three loading states.
As a further technical solution, in the second step, if the ratio of the center of gravity height H to the track width L is invalid, the ratio is taken to be 0.43 for the truck and 0.36 for the passenger car.
As a further technical solution, in the third step, a frequency range included in the filtering process is: a ball defect frequency BSF of 4 times or more and an inner ring defect frequency BPFI of 10 times or less, wherein:
BSF＝PD/2/BD×RF×{1-[(BD/PD)×Cos(CA)] 2 }，
BPFI＝N/2×RF×{1+[(BD/PD)×Cos(CA)]}；
the symbols are described as follows: n is the number of balls of the hub bearing sample, BD is the ball diameter, PD is the pitch diameter, namely the average value of the diameters of the inner ring and the outer ring raceways of the hub bearing sample, CA is the contact angle of the hub bearing sample, and RF is the rotation frequency and is obtained by converting the test rotation speed N.
As a further technical solution, in the fourth step, the sleeve disassembly and inspection are performed on the hub bearing sample, which requires the following steps: the leaching rate of lubricating grease seeping out of the surface of the sealing ring is not more than 5%, the running temperature of the hub bearing sample, namely the temperature measured by a temperature sensor, is not more than 110 ℃, the hub bearing sample is not allowed to generate raceway fatigue failure, and the sealing part in the hub bearing sample is not allowed to generate friction contact with the steel ball; if at least one of the above requirements does not meet the standard, the high load test of the hub bearing sample is considered to be unsatisfactory.
The beneficial effects of the invention are as follows:
1. when the vibration of the hub bearing sample is calculated, the original signal obtained by the vibration sensor is subjected to filtering treatment, and then the root mean square value of the filtered vibration value is calculated, so that the influence of other clutter is avoided, and the real failure mode and state of the hub bearing sample are reflected;
2. three loading modes (no axial and radial load, only spindle rotation, radial load application and spindle rotation, axial and radial load application and spindle rotation) are provided for the hub bearing sample, so that the vibration condition of the hub bearing can be comprehensively evaluated, and the overall vibration level of the hub bearing can be known;
3. the temperature and vibration level of the hub bearing sample can be monitored simultaneously, and the effective/failure state of the hub bearing sample can be reflected in real time.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a graph showing the relationship between the test time s, the test speed n and the axial load Fs in the second step of the embodiment of the present invention.
Reference numerals illustrate: the device comprises an L-shaped loading arm 1, a connecting disc 2, a brake disc 3, a connecting plate 4, a hub bearing sample 5, a vibration sensor 6, a temperature sensor 7, a hub bearing center line 8, a wheel center line 9, a combined loading point 10, a vertical section 11 and a horizontal section 12.
Detailed Description
The invention will be described in detail below with reference to the attached drawings:
examples: as shown in figure 1, the high-load and vibration test device for the automobile hub bearing comprises an L-shaped loading arm 1, a connecting disc 2, a brake disc 3, a connecting plate 4, a hub bearing sample 5, a vibration sensor 6, a temperature sensor 7, a hub bearing center line 8, a wheel center line 9, a combined loading point 10, a vertical section 11 and a horizontal section 12.
The test device needs to be matched with a hub bearing test machine for use, and the existing hub bearing test machine is generally provided with a main shaft, a radial loading device and an axial loading device. One end flange (inner ring flange) of the hub bearing sample 5 is sequentially fastened with the brake disc 3 and the connecting disc 2 through bolt connection, the shaft hole of the connecting disc 2 is driven by the spindle connection of the hub bearing testing machine, the other end flange (outer ring flange) of the hub bearing sample 5 is fixed on the connecting plate 4, the connecting plate 4 is fixedly connected with the surface of the vertical section 11 of the L-shaped loading arm 1, the vibration sensor 6 is mounted on the upper end surface of the connecting plate 4, preferably, the mounting direction of the vibration sensor 6 is consistent with the radial loading direction, the temperature sensor 7 is mounted on the non-rotating end surface (outer ring wall) of the hub bearing sample 5, and the temperature sensor 7 can detect the real-time temperature of the hub bearing sample 5 in the running process. The horizontal section 12 of the L-shaped loading arm 1 is provided with a combined loading point 10, a radial loading device and an axial loading device of the hub bearing testing machine are loaded on the combined loading point 10 together, and radial loading and axial loading are applied to the combined loading point 10. Further, the distance from the combined loading point 10 to the center of the spindle, namely the axial loading moment arm, is equal to the radius R of the wheel in the real vehicle, the combined loading point 10 is collinear with the wheel center line 9 of the wheel, the wheel hub bearing center line 8 is positioned on the left side of the wheel center line 9, and the distance from the wheel center line 9 to the end face of the brake disc 3 is equal to the radial loading offset distance ET.
The test method adopting the high-load and vibration test device for the automobile hub bearing comprises the following steps:
the first step: building a test device: the method comprises the steps of installing a hub bearing sample 5 and an L-shaped loading arm 1 on a hub bearing testing machine, ensuring that an axial loading arm is equal to a wheel radius R, simultaneously, a radial loading offset distance ET is equal to the distance from a wheel center line 9 to the end face of a brake disc 3, installing a vibration sensor 6 on the upper end face of a connecting plate 4, and enabling the installation direction of the vibration sensor 6 to be consistent with the radial loading direction;
and a second step of: setting test parameters: a main shaft rotation speed of the hub bearing tester, i.e. a test rotation speed n, is set, wherein the test rotation speed n=v is 1000/(2pi×r 60), v is a real vehicle speed, R is a vehicle radius, n= (100×1000/(2×3.14×r 60) is set, in units of revolutions per minute, then a radial load fr=w/2+w×g is set, wherein W is an axle weight of a front axle or a rear axle, g is a lateral acceleration coefficient, H is a wheel track, L is a wheel track, measured by the real vehicle, if a ratio of the center of gravity high H to the wheel track L is invalid, 0.43 is taken for the ratio of the truck (pick-up truck, SUV, etc.), and then an axial load fs=fr=g is set for the ratio of the truck, as shown in fig. 1, wherein the two opposite loading directions are respectively, and the axial load fs=fs=1 and fs=2 are calculated, and the axial load fs=2 fs=1, and the axial load fs=2 s=2 is calculated, and the ratio of the axial load fs=n=2 is calculated as shown in the test rotation speed n=2.8, and the ratio of the axial load fs=2 is calculated as shown in fig. 1, the time n=2, the axial load fs=2 is calculated as a continuous time between the test rotation speed n=2.
After the parameter setting of the hub bearing testing machine is completed, starting a loading test, and collecting an original signal value output by the vibration sensor 6. Preferably, the hub bearing specimen 5 has the following three loading conditions, respectively:
(1) no radial and axial loading exists, and only the main shaft of the hub bearing testing machine provides a test rotating speed n;
(2) applying radial load Fr, and simultaneously providing test rotating speed n for a main shaft of the hub bearing tester;
(3) applying an inward steering axial load Fs with a lateral acceleration coefficient of 0.5g, simultaneously applying a radial load Fr, and providing a test rotating speed n by a main shaft of the hub bearing tester;
for the three loading states mentioned above, vibration values corresponding to the three test conditions were measured and obtained in the third step.
And a third step of: vibration value calculation: filtering the original signal value obtained in the second step to obtain a required vibration value, then solving a root mean square value G-RMS of the vibration value, and calculating the vibration signal reading time of the root mean square of the vibration G-RMS to be more than 6s to 10s so as to reduce the influence of an instantaneous vibration peak value; frequency range included in the filtering process: a ball defect frequency BSF of 4 times or more and an inner ring defect frequency BPFI of 10 times or less, wherein:
BSF＝PD/2/BD×RF×{1-[(BD/PD)×Cos(CA)] 2 }，
BPFI＝N/2×RF×{1+[(BD/PD)×Cos(CA)]}；
the symbols are described as follows: n is the number of balls of the hub bearing sample 5, BD is the ball diameter, PD is the pitch diameter, namely the average value of the diameters of the inner ring and the outer ring raceways of the hub bearing sample 5, CA is the contact angle of the hub bearing sample 5, and RF is the rotation frequency and is obtained by converting the test rotation speed N. The high frequency vibration in the two frequency ranges (between 4 times BSF and 10 times BPFI) mainly reflects the peeling of the surface of one or more balls, the low frequency vibration is mainly the vibration caused by the fixture, and the low pass filtering should not exceed 5 times of the rotation frequency RF.
Fourth step: and (5) qualification judgment: when the test is performed for a set time (preferably 2 hours) or when at least one of the vibration sensor 6 and the temperature sensor 7 gives an alarm signal, the test is stopped, and the hub bearing sample 5 is removed for sleeve removal checking, which is required as follows: the small amount of grease exudation on the surface of the sealing ring is allowed (the exudation rate is not more than 5%), the running temperature of the hub bearing sample 5, namely the temperature measured by the temperature sensor 7 is not more than 110 ℃, the hub bearing sample 5 is not allowed to generate raceway fatigue failure, and the sealing part in the hub bearing sample 5 is not allowed to generate friction contact with the steel ball; if at least one of the above requirements fails, the high load test of the hub bearing sample 5 is deemed unsatisfactory. When the vibration value is 3-5 times of the initial value compared with the initial vibration in the test, the bearing is considered to have abnormal vibration, the bearing is likely to fail, and the shutdown check is needed. Shutdown checks are also required when the temperature reaches 110 ℃ during bearing testing.
The device and the test method provided by the invention are widely suitable for various automobile hub bearing production enterprises and various automobile manufacturers, and are mainly used for testing the durability of the hub bearing under high load and evaluating the contact fatigue resistance of the hub bearing raceway. The design of a test device under the condition of high load of a hub bearing unit is solved, and the installation and measurement modes of a temperature sensor and a vibration sensor, the connection modes of a sample, a clamp and the like, the loading mode and the like are described; the method for program loading, test process control and test result evaluation of the high-load test provides a solution for simulating the heavy-load real vehicle working condition of the automobile.
It should be understood that equivalents and modifications to the technical scheme and the inventive concept of the present invention should fall within the scope of the claims appended hereto.
Claims (9)
1. The utility model provides a car wheel hub bearing high load and vibration test device which characterized in that: the device comprises an L-shaped loading arm (1), a connecting disc (2), a brake disc (3), a hub bearing sample (5) and a hub bearing testing machine, wherein one end flange of the hub bearing sample (5) is connected and fastened with the brake disc (3) and the connecting disc (2) in sequence, the connecting disc (2) is driven by the connection of a main shaft of the hub bearing testing machine, the other end flange of the hub bearing sample (5) is fixed on a connecting plate (4), the connecting plate (4) is fixedly connected with the surface of a vertical section (11) of the L-shaped loading arm (1), a vibration sensor (6) is arranged on the upper end surface of the connecting plate (4), and a temperature sensor (7) is arranged on the non-rotating end surface of the hub bearing sample (5); the horizontal section (12) of the L-shaped loading arm (1) is provided with a combined loading point (10), the radial loading device and the axial loading device of the hub bearing testing machine are loaded onto the combined loading point (10) together, and radial loading and axial loading are applied to the combined loading point (10).
2. The automobile hub bearing high load and vibration test apparatus of claim 1, wherein: the distance from the combined loading point (10) to the center of the main shaft, namely the axial loading moment arm, is equal to the radius R of a wheel in a real vehicle, the combined loading point (10) is collinear with the wheel center line (9) of the wheel, and the distance from the wheel center line (9) to the end face of the brake disc (3) is equal to the radial loading offset ET.
3. The automobile hub bearing high load and vibration test device according to claim 2, wherein: the installation direction of the vibration sensor (6) is consistent with the radial loading direction.
4. A test method using the high load and vibration test apparatus for automobile hub bearings according to any one of claims 1 to 3, characterized in that: the method comprises the following steps:
the first step: building a test device: the method comprises the steps of installing a hub bearing sample (5) and an L-shaped loading arm (1) on a hub bearing testing machine, ensuring that an axial loading arm is equal to a wheel radius R, simultaneously, a radial loading offset distance ET is equal to the distance from a wheel center line (9) to the end face of a brake disc (3), installing a vibration sensor (6) on the upper end face of a connecting plate (4), and enabling the installation direction of the vibration sensor (6) to be consistent with the radial loading direction;
and a second step of: setting test parameters: setting a main shaft rotating speed of a hub bearing testing machine, namely a test rotating speed n, setting a radial load Fr and an axial load Fa, starting a loading test, and collecting an original signal value output by a vibration sensor (6);
and a third step of: vibration value calculation: filtering the original signal value obtained in the second step to obtain a required vibration value, and then solving the root mean square value G-RMS;
fourth step: and (5) qualification judgment: and stopping the test when the test is carried out for a set time or when at least one of the vibration sensor (6) and the temperature sensor (7) sends out an alarm signal, and detaching the hub bearing sample (5) for checking, so as to judge the qualification of the test.
5. The assay method of claim 4, wherein: in the second step, the test rotating speed n=v×1000/(2pi×r×60), where v is the actual vehicle speed, and the unit km/h, and R is the wheel radius; radial load fr=w/2+w+g×h/L, where W is the axial weight, g is the lateral acceleration coefficient, H is the center of gravity height, L is the track, both measured by a real vehicle; axial load fs=fr×g, and Fs has two opposite loading directions, fs1 and Fs2, respectively, fs1 being the load in the inward direction and Fs2 being the load in the outward direction.
6. The assay method of claim 5, wherein: in the second step, the hub bearing sample (5) has the following three loading states:
(1) no radial and axial loading exists, and only the main shaft of the hub bearing testing machine provides a test rotating speed n;
(2) applying radial load Fr, and simultaneously providing test rotating speed n for a main shaft of the hub bearing tester;
(3) applying an inward steering axial load Fs with a lateral acceleration coefficient of 0.5g, simultaneously applying a radial load Fr, and providing a test rotating speed n by a main shaft of the hub bearing tester;
for the three loading states, vibration values corresponding to the three test conditions are measured and obtained in the third step.
7. The assay method of claim 6, wherein: in the second step, if the ratio of the gravity center height H to the track width L is invalid, the ratio is taken to be 0.43 for a truck and 0.36 for a passenger car.
8. The assay method of claim 7, wherein: in the third step, the frequency range included in the filtering process is: a ball defect frequency BSF of 4 times or more and an inner ring defect frequency BPFI of 10 times or less, wherein:
BSF＝PD/2/BD×RF×{1-[(BD/PD)×Cos(CA)] 2 }，
BPFI＝N/2×RF×{1+[(BD/PD)×Cos(CA)]}；
the symbols are described as follows: n is the number of balls of the hub bearing sample (5), BD is the ball diameter, PD is the pitch diameter, namely the average value of the diameters of the inner ring and the outer ring rollaway nest of the hub bearing sample (5), CA is the contact angle of the hub bearing sample (5), and RF is the rotation frequency and is obtained by converting the test rotation speed N.
9. The assay method of claim 8, wherein: in the fourth step, the hub bearing sample (5) is subjected to sleeve disassembly and inspection, and the requirements are as follows: the seepage rate of the lubricating grease on the surface of the sealing ring is not more than 5%, namely the running temperature of the hub bearing sample (5), namely the temperature measured by the temperature sensor (7), is not more than 110 ℃, the hub bearing sample (5) is not allowed to generate raceway fatigue failure, and the sealing part in the hub bearing sample (5) is not allowed to generate friction contact with the steel ball; if at least one of the above requirements does not meet the standard, the high load test of the hub bearing sample (5) is considered to be unsatisfactory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310180348.2A CN116429422A (en) | 2023-02-16 | 2023-02-16 | High-load and vibration test device and test method for automobile hub bearing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310180348.2A CN116429422A (en) | 2023-02-16 | 2023-02-16 | High-load and vibration test device and test method for automobile hub bearing |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116839907A (en) * | 2023-09-04 | 2023-10-03 | 万向钱潮股份公司 | Hub bearing axial rigidity test method and test device |
| CN116878878A (en) * | 2023-09-05 | 2023-10-13 | 万向钱潮股份公司 | Bearing test reinforcing and fastening device |
| CN117249913A (en) * | 2023-11-20 | 2023-12-19 | 江苏金强钢轮有限公司 | Automobile hub bearing temperature monitoring alarm system |
-
2023
- 2023-02-16 CN CN202310180348.2A patent/CN116429422A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116839907A (en) * | 2023-09-04 | 2023-10-03 | 万向钱潮股份公司 | Hub bearing axial rigidity test method and test device |
| CN116839907B (en) * | 2023-09-04 | 2023-11-21 | 万向钱潮股份公司 | Hub bearing axial rigidity test method and test device |
| CN116878878A (en) * | 2023-09-05 | 2023-10-13 | 万向钱潮股份公司 | Bearing test reinforcing and fastening device |
| CN116878878B (en) * | 2023-09-05 | 2023-11-14 | 万向钱潮股份公司 | Bearing test reinforcing and fastening device |
| CN117249913A (en) * | 2023-11-20 | 2023-12-19 | 江苏金强钢轮有限公司 | Automobile hub bearing temperature monitoring alarm system |
| CN117249913B (en) * | 2023-11-20 | 2024-02-09 | 江苏金强钢轮有限公司 | Automobile hub bearing temperature monitoring alarm system |
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