CN107061483B - A kind of automobile hub bearing and monitoring method of On-line Fault monitoring - Google Patents
A kind of automobile hub bearing and monitoring method of On-line Fault monitoring Download PDFInfo
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- CN107061483B CN107061483B CN201710455324.8A CN201710455324A CN107061483B CN 107061483 B CN107061483 B CN 107061483B CN 201710455324 A CN201710455324 A CN 201710455324A CN 107061483 B CN107061483 B CN 107061483B
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- hub
- bearing
- inner ring
- bearing unit
- flange
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The present invention provides a kind of automobile hub bearing of On-line Fault monitoring, it is characterised in that: including hub-bearing unit and fault monitoring system；The fault monitoring system is placed in the shell of hub-bearing unit；The fault monitoring system includes flexible sheet pressure sensor, Signal Regulation auxiliary circuit, electronic control unit ECU, monitoring system connector, accessory power supply and display.In addition the present invention also provides a kind of automobile hub bearing on-line monitoring methods.
Description
Technical field
The present invention provides the automobile hub bearing and monitoring method of a kind of On-line Fault monitoring, belongs to automotive wheels hub axle
Bearing unit technical field.
Background technique
Compared with general bearing, bearing unit for saloon car wheel hub is the relatively high class bearing of technology complexity.From
Since the hub-bearing unit of Aktiebolaget SKF's manufacture in 1938 comes out, hub-bearing unit is just always towards high loadability, structure
Compact, non-maintaining, high reliability and lightweight direction are developed.Assembly plant requires to get over to the initial failure of key components and parts
Come stringenter.The typical phenomenon of hub-bearing unit initial failure be occur abnormal sound, wheel shake etc., these phenomenons be all due to
Caused by the end-play of hub-bearing unit changes, therefore, shadow of the research end-play to bearing unit for saloon car wheel hub performance
Sound is meaningful.
Hub-bearing unit end-play significantly affects the load distribution of Bearing inner and is displaced and is carried by interior contact
The fatigue life that lotus determines.In order to obtain longer fatigue life and improve torque rigidity, it is necessary to apply to hub-bearing unit
Suitable axial preload, so that bearing works under negative end-play, the reasonability of the clearance directly influences hub spindle
The working life of bearing unit.When negative clearance is inadequate, hub-bearing unit is easy looseness under loaded state and forms vibration；When
When negative clearance excess, cause the contact stress of raceway excessive and generate early fatigue, both states to service life of bearing not
Benefit.For realizing the hub-bearing unit pre-tightened using axis riveted, need to ensure that bearing is in appropriate original before implementing to pre-tighten
End-play simultaneously effectively controls axial prefastening load.Lifetime of system when hub-bearing unit is in a suitable axial negative clearance
Longest, but as axial negative clearance further increases (i.e. axial preload increase), fatigue life reduces rapidly.Existing hub spindle
Bearing unit method for measuring axial clearance: hub-bearing unit ring flange and base engagement unload the application of cycle surface loading head
Power is carried, the power applied just makes molding that can stir inside steel ball under certain torque, records unloading force at this time, for dress
Next the unloading force of vehicle part can calculate hub-bearing unit axial load and end-play by programming.The inspection
Survey method can not achieve on-line monitoring, and complicated for operation, cannot find the problem in time in vehicle traveling.
Summary of the invention
The present invention cannot monitor on-line to solve automobile hub bearing in the prior art and monitoring method is complicated
It is difficult to operate and the defect and deficiency of diagnostic result inaccuracy, provides a kind of automobile hub bearing of On-line Fault monitoring
And monitoring method.
In order to solve the above technical problems, the present invention provides a kind of automobile hub bearing of On-line Fault monitoring, including
Hub-bearing unit and fault monitoring system；The fault monitoring system is placed in the shell of hub-bearing unit front end；
The fault monitoring system includes flexible sheet pressure sensor, Signal Regulation auxiliary circuit, electronic control unit
ECU, monitoring system connector, accessory power supply and display, the flexible sheet pressure sensor are mounted on hub-bearing unit
Inner ring and flange inner ring front end between, for acquiring the deflection between inner ring and flange inner ring and being converted to hub bearing
The axial load signal of unit, Signal Regulation auxiliary circuit are used to receive the axial load letter of flexible sheet pressure sensor acquisition
Number, carry out conditioning filtering and convert and be sent to electronic control unit ECU, electronic control unit ECU assists electricity according to Signal Regulation
The electric signal that road is sent carries out breakdown judge, and is calculated according to the hub-bearing unit end-play of setting and axial load relationship
The end-play value of hub-bearing unit out, the monitoring system connector are used to connect electronic control unit ECU and display,
The accessory power supply is used to power to fault monitoring system.
Further, automobile hub bearing further includes ABS sensor-based system, and the ABS sensor-based system includes abs sensor
And magnetic pole, the abs sensor are mounted in the shell of hub-bearing unit, after several described magnetic poles are uniformly mounted on riveted
Flange inner ring front end outer wall on, the abs sensor and the magnetic pole mutual cooperation play the role of braking anti-lock.
Further, the magnetic pole totally 48.
Further, the hub-bearing unit include flange inner ring, flange outer ring, inner ring, preceding retainer, rear retainer,
Steel ball, preceding sealing ring, rear sealing ring, temperature sensor and bolt；The flange inner ring and hub for vehicle wheel pass through a spiral shell by bolt
Keyhole connection, the inner ring are linked in flange inner ring front end, form retainer channel A with the flange outer ring；It is kept before described
In the annular groove that frame is mounted on inner ring and flange outer ring is formed, the rear retainer is mounted on flange outer ring and flange inner ring shape
At annular groove in；The preceding retainer and rear retainer are all placed in the A of retainer channel, and preceding retainer and rear holding
Steel ball is equipped in frame.
Further, the inner wall of the flange outer ring is equipped with temperature sensor, to monitor the temperature in the A of retainer channel.
The present invention also provides a kind of On-line Fault monitoring methods of automobile hub bearing, and steps are as follows:
It is mounted in the flexible sheet pressure sensor acquisition between the inner ring of hub-bearing unit and flange inner ring front end
Deflection between circle and flange inner ring, and it is converted to the axial load signal of hub bearing；
The axial load signal that Signal Regulation auxiliary circuit receives the acquisition of flexible sheet pressure sensor carries out conditioning filter
Wave conversion, is then sent to electronic control unit ECU；
The electric signal that electronic control unit ECU is sent according to Signal Regulation auxiliary circuit carries out breakdown judge, and according to setting
Fixed hub-bearing unit end-play and axial load relationship calculates the end-play value of hub-bearing unit；
The corresponding malfunction and failure of hub-bearing unit is judged according to the corresponding end-play value of failure mode and changing rule
Then form sets hub-bearing unit end-play threshold value, if the end-play value of hub-bearing unit is greater than setting clearance
Threshold value then shows error code over the display.
Further, the end-play value calculating process of hub bearing is as follows:
The axial load that facility is added in hub-bearing unit is Fa, the position to axial that is generated between inner ring and flange inner ring
Moving is δa, contact angle is by α0Become α；
Pretightning force, that is, axial load F of the hub bearing at itselfaUnder the action of, meet following equation:
In above formula: z-steel ball number；Kn- load-displacement constant；B-total curvature, B=fi+fo-1；fi, fo- inside and outside
Enclose ditch coefficient of curvature；D-steel ball size；
In axial load FaUnder the action of, the axial displacement that interior column bearing generates is δai, the axial position of outer column bearing generation
Moving is δao, then:
δai=δao=δa (3)
Since outer column bearing is axially fixed, column bearing axial displacement is superimposed with interior column bearing other than institute, i.e. hub bearing
The clearance value δ of unit is indicated are as follows:
δ=δai+δao=2 δa (4)
FaIt is measured by flexible sheet pressure sensor, α can be obtained according to (2) formula, brought α into (1) formula, δ can be obtaineda, by (4) formula
Hub-bearing unit end-play value δ can be obtained, to obtain end-play value according to hub bearing axial load.
Present invention advantageous effects achieved:
(1) structure disassembly simply easy to install, can real-time online acquisition hub-bearing unit operating condition
(2) it can directly measure to obtain hub-bearing unit axial load using flexible sheet pressure sensor, further obtain
Corresponding hub-bearing unit end-play is obtained, and then obtains corresponding hub-bearing unit operating condition, is monitored reliable and practical.
Detailed description of the invention
The hub-bearing unit structural schematic diagram of Fig. 1 present invention；
The fault monitoring system structural schematic diagram of Fig. 2 present invention；
The fault monitoring system composition block diagram of Fig. 3 present invention；
The outer ring under Axial Loads of Fig. 4 present invention and flange inner ring axial displacement and contact angle change schematic diagram.
Wherein: 1 flange inner ring；2 bolts；Sealing ring after 3；4 flange outer rings；5 temperature sensors；6 steel balls；Retainer before 7；
Sealing ring before 8；9 inner rings；10 flexible sheet pressure sensors；11 Signal Regulations and auxiliary circuit；12 electronic control unit ECU；
13 monitoring system connectors；14 accessory power supplys；15 abs sensors；16 magnetic poles；17 shells；Retainer after 18；A retainer is logical
Road.
Specific embodiment
The invention will be further described combined with specific embodiments below.Following embodiment is only used for clearly illustrating
Technical solution of the present invention, and not intended to limit the protection scope of the present invention.
The invention patent is further illustrated with reference to the accompanying drawings and examples.
As shown in Figure 1-3, the present invention provides a kind of automobile hub bearing of On-line Fault monitoring, including hub bearing
Unit and fault monitoring system；The fault monitoring system is placed in the shell 17 of hub-bearing unit front end；
The fault monitoring system includes flexible sheet pressure sensor 10, Signal Regulation auxiliary circuit 11, electronic control
Unit ECU 12, monitoring system connector 13, accessory power supply 14 and display, the flexible sheet pressure sensor 10 are mounted on
Between 1 front end of inner ring 9 and flange inner ring of hub-bearing unit, for acquire the deflection between inner ring 9 and flange inner ring 1,
And the axial load signal of hub-bearing unit is converted to, Signal Regulation auxiliary circuit 11 is for receiving flexible sheet pressure sensing
The axial load signal and then carry out conditioning filtering conversion and be sent to electronic control unit ECU 12, electronics control that device 10 acquires
The electric signal that unit ECU12 processed is sent according to Signal Regulation auxiliary circuit 11 carries out breakdown judge and according to the hub spindle of setting
Bearing unit end-play and axial load relationship calculate the end-play value of hub-bearing unit, the monitoring system connector
13 for connecting electronic control unit ECU 12 and display, and the accessory power supply is used to power to fault monitoring system.
Automobile hub bearing further includes ABS sensor-based system, and the ABS sensor-based system includes abs sensor 15 and magnetic
Pole 16, the abs sensor 15 are mounted in the shell 17 of hub-bearing unit, several described magnetic poles 16 are uniformly mounted on riveting
On the front end outer wall of flange inner ring 1 after conjunction, braking anti-lock is played in the abs sensor 15 and the mutual cooperation of the magnetic pole 16
Effect.The magnetic pole totally 48.
The hub-bearing unit includes flange inner ring 1, flange outer ring 4, inner ring 9, preceding retainer 7, rear retainer 18, steel
Ball 6, preceding sealing ring 8, rear sealing ring 3, temperature sensor 5 and bolt 2；The flange inner ring 1 and hub for vehicle wheel are led to by bolt 2
A bolt hole connection is crossed, the inner ring 9 is linked in 1 front end of flange inner ring, forms retainer channel A with the flange outer ring 4；Institute
In the annular groove that retainer 7 is mounted on inner ring 9 before stating and flange outer ring 4 is formed, the rear retainer 18 is mounted on outside flange
In the annular groove that circle 4 is formed with flange inner ring 1；The preceding retainer 7 and rear retainer 18 are all placed on retainer channel A
In, and steel ball is equipped in preceding retainer 7 and rear retainer 18.The inner wall of the flange outer ring 4 is equipped with temperature sensor 5, to
Monitor the temperature in the A of retainer channel.
The present invention also provides a kind of On-line Fault monitoring method of automobile hub bearing,
It is mounted in the flexible sheet pressure sensor acquisition between the inner ring of hub-bearing unit and flange inner ring front end
Deflection between circle and flange inner ring, and be converted to the axial load signal of hub-bearing unit；
The axial load signal that Signal Regulation auxiliary circuit receives the acquisition of flexible sheet pressure sensor carries out conditioning filtering
Conversion, is then sent to electronic control unit ECU；
The electric signal that electronic control unit ECU is sent according to Signal Regulation auxiliary circuit carries out breakdown judge and basis is set
Fixed hub-bearing unit end-play and axial load relationship calculates the end-play value of hub-bearing unit；
The corresponding malfunction and failure of hub-bearing unit is judged according to the corresponding end-play value of failure mode and changing rule
Form sets hub-bearing unit end-play threshold value, if the end-play value of hub-bearing unit is greater than setting clearance threshold value,
Error code is then shown over the display.
Wherein, the end-play value calculating process of hub bearing is as follows:
The axial load that facility is added in hub-bearing unit is Fa, the position to axial that is generated between inner ring and flange inner ring
Moving is δa, contact angle is by α0Become α；
Pretightning force, that is, axial load F of the hub bearing at itselfaUnder the action of, meet following equation:
In above formula: z-steel ball number；Kn- load-displacement constant；B-total curvature, B=fi+fo-1；fi, fo- inside and outside
Enclose ditch coefficient of curvature；D-steel ball size.
In axial load FaUnder the action of, the axial displacement that interior column bearing generates is δai, the axial position of outer column bearing generation
Moving is δao, then:
δai=δao=δa (3)
Since outer column bearing is axially fixed, column bearing axial displacement is superimposed with interior column bearing other than institute, i.e. hub bearing
The clearance value δ of unit is indicated are as follows:
δ=δai+δao=2 δa (4)
FaIt is measured by flexible sheet pressure sensor, α can be obtained according to (2) formula, brought α into (1) formula, δ can be obtaineda, by (4) formula
Hub-bearing unit end-play value δ can be obtained, so that end-play value be calculated according to hub bearing axial load.
The present invention is disclosed with preferred embodiment above, so it is not intended to limiting the invention, all to take equivalent replacement
Or the scheme technical solution obtained of equivalent transformation, it falls within the scope of protection of the present invention.
Claims (4)
1. a kind of automobile hub bearing of On-line Fault monitoring, it is characterised in that: including hub-bearing unit and failure
Monitoring system；The fault monitoring system is placed in the shell of hub-bearing unit front end；
The fault monitoring system include flexible sheet pressure sensor, Signal Regulation auxiliary circuit, electronic control unit ECU,
Monitoring system connector, accessory power supply and display, the flexible sheet pressure sensor are mounted on the interior of hub-bearing unit
Between circle and flange inner ring front end, for acquiring the deflection between inner ring and flange inner ring and being converted to hub-bearing unit
Axial load signal, Signal Regulation auxiliary circuit be used for receive flexible sheet pressure sensor acquisition axial load signal,
It carries out conditioning filtering to convert and be sent to electronic control unit ECU, electronic control unit ECU is according to Signal Regulation auxiliary circuit
The electric signal of transmission carries out breakdown judge, and is calculated according to the hub-bearing unit end-play and axial load relationship of setting
The end-play value of hub-bearing unit, the monitoring system connector is for connecting electronic control unit ECU and display, institute
Accessory power supply is stated for powering to fault monitoring system；
Automobile hub bearing further includes ABS sensor-based system, and the ABS sensor-based system includes abs sensor and magnetic pole, described
Abs sensor is mounted in the shell of hub-bearing unit, several described magnetic poles are uniformly mounted on the flange inner ring after riveted
Front end outer wall on, the abs sensor and the magnetic pole mutual cooperation play the role of braking anti-lock；The magnetic pole totally 48
It is a.
2. the automobile hub bearing of On-line Fault monitoring according to claim 1, it is characterised in that: the hub spindle
Bearing unit includes flange inner ring, flange outer ring, inner ring, preceding retainer, rear retainer, steel ball, preceding sealing ring, rear sealing ring, temperature
Spend sensor and bolt；The flange inner ring is connected by bolt by a bolt hole with hub for vehicle wheel, and the inner ring is linked in method
Blue inner ring front end forms retainer channel A with the flange outer ring；The preceding retainer is mounted on inner ring and is formed with flange outer ring
Annular groove in, it is described after retainer be mounted in the annular groove that flange outer ring and flange inner ring are formed；It is kept before described
Frame and rear retainer are all placed in the A of retainer channel, and steel ball is equipped in preceding retainer and rear retainer.
3. the automobile hub bearing of On-line Fault monitoring according to claim 2, it is characterised in that: outside the flange
The inner wall of circle is equipped with temperature sensor, to monitor the temperature in the A of retainer channel.
4. a kind of On-line Fault monitoring method of automobile hub bearing, it is characterised in that:
Be mounted between the inner ring of hub-bearing unit and flange inner ring front end flexible sheet pressure sensor acquisition inner ring and
Deflection between flange inner ring, and it is converted to the axial load signal of hub bearing；
The axial load signal that Signal Regulation auxiliary circuit receives the acquisition of flexible sheet pressure sensor carries out conditioning filtering and turns
It changes, is then sent to electronic control unit ECU；
Electronic control unit ECU carries out breakdown judge according to the electric signal that Signal Regulation auxiliary circuit is sent, and according to setting
Hub-bearing unit end-play and axial load relationship calculate the end-play value of hub-bearing unit, and calculating process is such as
Under:
The axial load that facility is added in hub-bearing unit is Fa, the displacement to axial generated between inner ring and flange inner ring is
δa, contact angle is by α0Become α；
Pretightning force, that is, axial load F of the hub bearing at itselfaUnder the action of, meet following equation:
In above formula: z-steel ball number；Kn- load-displacement constant；B-total curvature, B=fi+fo-1；fi, fo- inside and outside circle ditch
Coefficient of curvature；D-steel ball size；
In axial load FaUnder the action of, the axial displacement that interior column bearing generates is δai, the axial displacement that outer column bearing generates is
δao, then:
δai=δao=δa (3)
Since outer column bearing is axially fixed, column bearing axial displacement is superimposed with interior column bearing other than institute, i.e. hub-bearing unit
Clearance value δ indicate are as follows:
δ=δai+δao=2 δa (4)
FaIt is measured by flexible sheet pressure sensor, α can be obtained according to (2) formula, brought α into (1) formula, δ can be obtaineda, by (4) Shi Ke get
Hub-bearing unit end-play value δ, to obtain end-play value according to hub bearing axial load；
The corresponding malfunction and failure form of hub-bearing unit is judged according to the corresponding end-play value of failure mode and changing rule,
Then hub-bearing unit end-play threshold value is set, if the end-play value of hub-bearing unit is greater than setting clearance threshold value,
Error code is then shown over the display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710455324.8A CN107061483B (en) | 2017-06-16 | 2017-06-16 | A kind of automobile hub bearing and monitoring method of On-line Fault monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710455324.8A CN107061483B (en) | 2017-06-16 | 2017-06-16 | A kind of automobile hub bearing and monitoring method of On-line Fault monitoring |
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| CN107061483A CN107061483A (en) | 2017-08-18 |
| CN107061483B true CN107061483B (en) | 2019-08-27 |
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| CN201710455324.8A Active CN107061483B (en) | 2017-06-16 | 2017-06-16 | A kind of automobile hub bearing and monitoring method of On-line Fault monitoring |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542754A (en) * | 2017-09-26 | 2018-01-05 | 杭州萧山鼎立机械有限公司 | A kind of lightweight high abrasion hub-bearing unit |
| CN108827196A (en) * | 2018-05-02 | 2018-11-16 | 南京大雷科技有限公司 | A kind of new-energy automobile wheel hub positive round detection device |
| WO2019218137A1 (en) * | 2018-05-15 | 2019-11-21 | 舍弗勒技术股份两合公司 | Method for measuring bearing clearance and bearing device capable of adjusting bearing clearance |
| CN108869551A (en) * | 2018-07-13 | 2018-11-23 | 南京航空航天大学 | A kind of intelligence hub-bearing unit |
| CN110657772B (en) * | 2019-11-12 | 2020-09-01 | 济南易恒技术有限公司 | Third-generation direct detection method and device for negative clearance of hub bearing unit |
| CN112486063B (en) * | 2020-11-23 | 2021-12-28 | 中电科技集团重庆声光电有限公司 | Embedded multi-dimensional intelligent acquisition and processing micro-system for high-end bearing |
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| US5388916A (en) * | 1991-12-26 | 1995-02-14 | Ntn Corporation | Device for detecting the speed of rotation of automobile wheel |
| JP3089270B2 (en) * | 1990-02-26 | 2000-09-18 | 日本精工株式会社 | Hydrostatic gas bearing |
| CN101398438A (en) * | 2003-09-22 | 2009-04-01 | 株式会社捷太格特 | Sealing device and rotation detector |
| CN203418922U (en) * | 2013-08-08 | 2014-02-05 | 台州骏腾汽车零部件有限公司 | Hub bearing assembly with clearance monitoring function |
| CN204061555U (en) * | 2014-07-29 | 2014-12-31 | 温州市冠盛汽车零部件集团股份有限公司 | A kind of hub bearing assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3089270B2 (en) * | 1990-02-26 | 2000-09-18 | 日本精工株式会社 | Hydrostatic gas bearing |
| US5388916A (en) * | 1991-12-26 | 1995-02-14 | Ntn Corporation | Device for detecting the speed of rotation of automobile wheel |
| CN101398438A (en) * | 2003-09-22 | 2009-04-01 | 株式会社捷太格特 | Sealing device and rotation detector |
| CN203418922U (en) * | 2013-08-08 | 2014-02-05 | 台州骏腾汽车零部件有限公司 | Hub bearing assembly with clearance monitoring function |
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| CN107061483A (en) | 2017-08-18 |
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