CN104111170B - A kind of automobile hub bearing moment of friction testing stand - Google Patents

A kind of automobile hub bearing moment of friction testing stand Download PDF

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Publication number
CN104111170B
CN104111170B CN201410277005.9A CN201410277005A CN104111170B CN 104111170 B CN104111170 B CN 104111170B CN 201410277005 A CN201410277005 A CN 201410277005A CN 104111170 B CN104111170 B CN 104111170B
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China
Prior art keywords
radial
fixed
axial
bearing
loaded
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Expired - Fee Related
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CN201410277005.9A
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Chinese (zh)
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CN104111170A (en
Inventor
吴参
郭辉
倪敬
李兴林
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Hangzhou Electronic Science and Technology University
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Hangzhou Electronic Science and Technology University
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Application granted granted Critical
Publication of CN104111170B publication Critical patent/CN104111170B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention discloses a kind of automobile hub bearing moment of friction testing stand.Traditional friction torque tester cannot simulate the loading conditions in actual vehicle driving process, also cannot adapt to the third generation hub bearing flange that specification is numerous.The present invention includes test bed framework, drive mechanism, main shaft, radial loaded mechanism, axially loaded mechanism and measured bearing fixing device;Drive mechanism drive shaft rotates;Measured bearing fixing device includes support, bearing mounting flange and torque sensor;The bottom of support is hinged with the revolving body of radial loaded mechanism, and the axial compressive force sensor of top side and axially loaded mechanism is fixed;Torque sensor is fixed on the opposite side of cradle top;Bearing mounting flange is fixed with torque sensor;Axially loaded mechanism applies axial force to measured bearing fixing device, and radial loaded mechanism applies radial force and moment of flexure to measured bearing fixing device.The present invention is applicable to all kinds of automobile hub bearing, and can simulate hub bearing complex load situation.

Description

A kind of automobile hub bearing moment of friction testing stand
Technical field
The invention belongs to technical field of measurement and test, relate to bearing detecting device, be specifically related to a kind of automobile hub bearing moment of friction testing stand.
Background technology
Automobile hub bearing is one of key components and parts of automobile chassis, the severe degree of fretting wear when the size of its moment of friction characterizes hub bearing operating, the greasy property of hub bearing will be affected again by fricative heat simultaneously, therefore the moment of friction of automobile hub bearing has tremendous influence to the overall work life-span of bearing, increasingly causes domestic and international Production of bearing enterprise and the attention using enterprise.
At present, the application of China's automobile hub bearing is based on the third generation, and compared with common double-row angular contact bal bearing and double-row conical bearing, maximum difference is that its inner and outer ring is respectively integrated with a ring flange.The moment of friction research relatively morning to hub bearing abroad, the international bearing giant such as SKF, TIMKEN has been developed for the moment of friction testing stand for hub bearing, but its price is high, and owing to the reasons such as blockade on new techniques are difficult to meet domestic hub bearing manufacturing enterprise and use the actual demand of enterprise.Domestic, to the application of automobile hub bearing friction torque tester also in the starting stage in industry, many hub bearing manufacturing enterprises not yet recognize the key of moment of friction with car load factory.And existing plain bearing friction torque tester cannot adapt to the hub bearing flange that specification is numerous.On the other hand, automobile hub bearing is axial except bearing in the running of automobile, outside radial load, due to camber angle, the impact at tyre toe-in angle etc. is also acted on by a moment of flexure, the most when the vehicle is turning, moment of flexure drastically strengthens, make the inner ring of hub bearing, outer ring is the most coaxial, bearing frictional torque under this operating mode is totally different from general state, therefore the loading conditions in actual vehicle driving process cannot be simulated with traditional friction torque tester, need one badly and can be applicable to all kinds of hub bearing, and hub bearing can be simulated radially, axially, the automobile hub bearing friction torque testing stand of moment of flexure complex load situation.
Summary of the invention
It is an object of the invention to for the deficiencies in the prior art, it is provided that a kind of automobile hub bearing moment of friction testing stand, it is possible to be applicable to all kinds of automobile hub bearing, and hub bearing complex load situation can be simulated.
The present invention includes test bed framework, drive mechanism, main shaft, radial loaded mechanism, axially loaded mechanism and measured bearing fixing device;Described drive mechanism drive shaft rotates;Described main shaft is bearing on two main shaft support seats by two bearings;Two described main shaft support seats are all fixed with test bed framework.
Described radial loaded mechanism includes radial pressure sensor, the first servomotor, mobile base, revolving body, radial loaded driving gear, radial loaded driven gear, leading screw base, radial spring sleeve, radially ball-screw, the most double flange, radial push rod and radial spring.Described leading screw base and the first servomotor are each attached on mobile base, and mobile base is connected by sliding pair with test bed framework;Described radial loaded driving gear is fixed on the output shaft of the first servomotor, and engages with radial loaded driven gear;Described radial loaded driven gear is fixed on radial direction ball-screw;The bottom of described radial direction ball-screw is bearing on leading screw base by bearing;Radially feed screw nut is threadeded with radially ball-screw, and fixes with the most double flanges;Described radial push rod is fixed with the most double flanges, and radial spring is nested with on radial push rod;Described radial spring sleeve is nested with outside radial push rod, and is connected by sliding pair with radial push rod;The top of radial spring sleeve is fixed with radial pressure sensor;Described radial pressure sensor is fixed with revolving body.
Described axially loaded mechanism includes the most double flange, axial push rod, the second servomotor, axial compressive force sensor, axle spring sleeve, axle spring, axially loaded driving gear, axially loaded driven gear, axial ball-screw and axially supports seat.The second described servomotor is fixed in test bed framework;The output shaft of described axially loaded driving gear and the second servomotor connects, and engages with axially loaded driven gear;Described axially loaded driven gear is fixed on axial ball-screw, and described axial ball-screw is threadeded with axial feed screw nut, and axial feed screw nut is fixed with the most double flanges;The most double described flanges are fixed with axial push rod, and axle spring is nested with on axial push rod;Described axle spring sleeve is nested with outside axial push rod, and is connected by sliding pair with axial push rod;Described axial compressive force sensor is fixed with axle spring sleeve;Described axial ball-screw and an axial support seat are connected by bearing, and axial push rod and axle spring sleeve are connected by sliding pair with an axial support seat respectively, and three axial support seats are all fixed with test bed framework.
Described measured bearing fixing device includes support, bearing mounting flange and torque sensor.The bottom of described support is hinged with revolving body, and top side is fixed with axial compressive force sensor;Described torque sensor is fixed on the opposite side of cradle top;Described bearing mounting flange is fixed with torque sensor.
Described main shaft is provided with the shaft shoulder, and the head of main shaft is provided with spline.
Described drive mechanism includes driving motor, drive pulley, driven pulley and belt;The output shaft of described driving motor is fixed with drive pulley, and drive pulley is connected by belt with driven pulley, and driven pulley is fixed on main shaft.
Described belt is provided with tensioner;The regulating wheel of described tensioner compresses belt.
Beneficial effects of the present invention:
The present invention is directed to the actual condition of hub bearing, not only radial load and axial load to measured bearing simulation loading, and by radial loaded mechanism, measured bearing is loaded with moment of flexure, making the inside and outside coil axis of measured bearing form dislocation, situation loaded is closer to automobile hub bearing true stand under load situation;The present invention can change the moment of flexure size of loading by adjusting mobile position base;The present invention is applicable to the moment of friction test of all kinds of third generation automobile hub bearing.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention;
Fig. 2 is the schematic diagram of radially load maintainer in the present invention;
Fig. 3 is the schematic diagram of axial load maintainer in the present invention;
Fig. 4 is the schematic diagram of measured bearing fixing device in the present invention.
Detailed description of the invention
It is described further below in conjunction with the accompanying drawings.
As it is shown in figure 1, a kind of automobile hub bearing moment of friction testing stand, including test bed framework 1, drive mechanism, main shaft 6, tensioner 7, radial loaded mechanism 9, axially loaded mechanism 10 and measured bearing fixing device.
Drive mechanism includes driving motor 2, drive pulley 3, driven pulley 4 and belt 5;The output shaft driving motor 2 is fixed with drive pulley 3, and drive pulley 3 is connected by belt 5 with driven pulley 4, and driven pulley 4 is fixed on main shaft 6;The regulating wheel tightening belt 5 of tensioner 7;Main shaft 6 is bearing on two main shaft support seats 8 by two bearings;Main shaft 6 is provided with shaft shoulder 6-1, and the head of main shaft 6 is provided with spline;Two main shaft support seats 8 are all fixed with test bed framework 1.
As illustrated in fig. 1 and 2, radial loaded mechanism 9 includes radial pressure sensor the 11, first servomotor 12, mobile base 13, revolving body 14, radial loaded driving gear 15, radial loaded driven gear 16, leading screw base 17, radial spring sleeve 18, radially ball-screw 19, the most double flange 20, radial push rod 21 and radial spring 22.Leading screw base 17 and the first servomotor 12 are each attached on mobile base 13, and mobile base 13 is connected by sliding pair with test bed framework 1;Radial loaded driving gear 15 is fixed on the output shaft of the first servomotor 12, and engages with radial loaded driven gear 16;Radial loaded driven gear 16 is fixed on radial direction ball-screw 19;Radially the bottom of ball-screw 19 is bearing on leading screw base 17 by bearing;Radially feed screw nut is threadeded with radially ball-screw 19, and fixes with the most double flanges 20;Radial push rod 21 is fixed with the most double flanges 20, and radial spring 22 is nested with on radial push rod 21;Radial spring sleeve 18 is nested with outside radial push rod 21, and is connected by sliding pair with radial push rod 21;The top of radial spring sleeve 18 is fixed with radial pressure sensor 11;Radial pressure sensor 11 is fixed with revolving body 14.
As it is shown on figure 3, axially loaded mechanism 10 includes the most double flange 23, axial push rod the 24, second servomotor 25, axial compressive force sensor 26, axle spring sleeve 27, axle spring 28, axially loaded driving gear, axially loaded driven gear 29, axial ball-screw 30 and axially supports seat 31.Second servomotor 25 is fixed in test bed framework 1;The output shaft of axially loaded driving gear and the second servomotor 25 connects, and engages with axially loaded driven gear 29;Axially loaded driven gear 29 is fixed on axial ball-screw 30, and axial ball-screw 30 is threadeded with axial feed screw nut, and axial feed screw nut is fixed with the most double flanges 23;The most double flanges 23 are fixed with axial push rod 24, and axle spring 28 is nested with on axial push rod 24;Axle spring sleeve 27 is nested with outside axial push rod 24, and is connected by sliding pair with axial push rod 24;Axial compressive force sensor 26 is fixed with axle spring sleeve 27;Axially ball-screw 30 is connected by bearing with an axial support seat 31, and axial push rod 24 and axle spring sleeve 27 are connected by sliding pair with an axial support seat 31 respectively, and three axial support seats 31 are all fixed with test bed framework 1.
As shown in figs. 1 and 4, measured bearing fixing device includes support 32, bearing mounting flange 33 and torque sensor 34.The bottom of support 32 is hinged with revolving body 14, and top side is fixed with axial compressive force sensor 26;Torque sensor 34 is fixed on the opposite side at support 32 top;Bearing mounting flange 33 is fixed with torque sensor 34.
The operation principle of this automobile hub bearing moment of friction testing stand:
Before on-test, being connected by spline with main shaft 6 by the inner ring of measured bearing 35, the flange section of measured bearing 35 is fixed with bearing mounting flange 33, and the shaft shoulder 6-1 of main shaft realizes the axial location of measured bearing 35.
After on-test, start and drive motor 2 and the first servomotor 12;Driving motor 2 to drive drive pulley 3 to rotate, drive pulley 3 drives driven pulley 4 to rotate by belt 5, thus drives main shaft 6 to rotate, and main shaft rotarily drives the inner ring of measured bearing 35 and rotates.First servomotor 12 drives radial loaded driving gear 15 to rotate, and radial loaded driven gear 16 engages with radial loaded driving gear 15, thus drives radially ball-screw 19 to rotate;Radially the rotary motion of radial direction ball-screw 19 is converted to linear motion by feed screw nut, and drives the most double flange 20 to move upward, thus promotes radial push rod 21;Radial push rod 21 compresses radial spring 22, the elastic force of radial spring 22 upwardly radial spring sleeve 18, radial pressure sensor 11 and revolving body 14;Revolving body 14 upwardly support 32, support 32 by torque sensor 34 and bearing mounting flange 33 flange section of measured bearing 35 is carried out radial loaded and moment of torsion loads;Revolving body 14 is hinged with the bottom of support 32, the angular deflection of radial force in time offsetting radial loaded.Radial pressure sensor 11 and torque sensor 34 can read radial loaded power size and torque respectively by after computer disposal, and computer carries out feedback control to the first servomotor 12.Owing to torque sensor 34 is fixed by the flange section of bearing mounting flange 33 with measured bearing 35, so the moment of torsion that torque sensor 34 bears is exactly the moment of friction of measured bearing 35.
If experiment needs, the second servomotor 25 can be opened and load axial force simultaneously;Now, second servomotor 25 drives axially loaded driving gear 28 to rotate, axially loaded driven gear 29 engages with axially loaded driving gear 28, thus drive axial ball-screw 30 to rotate, axially the rotary motion of axial ball-screw 30 is converted to linear motion by feed screw nut, and driving the most double flange 23 and axial push rod 24 to move horizontally, axial push rod 24 compresses axle spring 28, and the elastic force of axle spring 28 promotes axial spring spool 27 and axial compressive force sensor 26;The elastic force of axle spring 28 is axially loaded power size, and the pressure signal of axial compressive force sensor 26 can read axially loaded power size by after computer disposal.

Claims (4)

1. an automobile hub bearing moment of friction testing stand, including test bed framework, drive mechanism, main shaft, radial loaded mechanism, axially loaded mechanism and measured bearing fixing device, it is characterised in that:
Described drive mechanism drive shaft rotates;Described main shaft is bearing on two main shaft support seats by two bearings;Two described main shaft support seats are all fixed with test bed framework;
Described radial loaded mechanism includes radial pressure sensor, the first servomotor, mobile base, revolving body, radial loaded driving gear, radial loaded driven gear, leading screw base, radial spring sleeve, radially ball-screw, the most double flange, radial push rod and radial spring;Described leading screw base and the first servomotor are each attached on mobile base, and mobile base is connected by sliding pair with test bed framework;Described radial loaded driving gear is fixed on the output shaft of the first servomotor, and engages with radial loaded driven gear;Described radial loaded driven gear is fixed on radial direction ball-screw;The bottom of described radial direction ball-screw is bearing on leading screw base by bearing;Radially feed screw nut is threadeded with radially ball-screw, and fixes with the most double flanges;Described radial push rod is fixed with the most double flanges, and radial spring is nested with on radial push rod;Described radial spring sleeve is nested with outside radial push rod, and is connected by sliding pair with radial push rod;The top of radial spring sleeve is fixed with radial pressure sensor;Described radial pressure sensor is fixed with revolving body;
Described axially loaded mechanism includes the most double flange, axial push rod, the second servomotor, axial compressive force sensor, axle spring sleeve, axle spring, axially loaded driving gear, axially loaded driven gear, axial ball-screw and axially supports seat;The second described servomotor is fixed in test bed framework;The output shaft of described axially loaded driving gear and the second servomotor connects, and engages with axially loaded driven gear;Described axially loaded driven gear is fixed on axial ball-screw, and described axial ball-screw is threadeded with axial feed screw nut, and axial feed screw nut is fixed with the most double flanges;The most double described flanges are fixed with axial push rod, and axle spring is nested with on axial push rod;Described axle spring sleeve is nested with outside axial push rod, and is connected by sliding pair with axial push rod;Described axial compressive force sensor is fixed with axle spring sleeve;Described axial ball-screw and an axial support seat are connected by bearing, and axial push rod and axle spring sleeve are connected by sliding pair with an axial support seat respectively, and three axial support seats are all fixed with test bed framework;
Described measured bearing fixing device includes support, bearing mounting flange and torque sensor;The bottom of described support is hinged with revolving body, and top side is fixed with axial compressive force sensor;Described torque sensor is fixed on the opposite side of cradle top;Described bearing mounting flange is fixed with torque sensor.
A kind of automobile hub bearing moment of friction testing stand the most according to claim 1, it is characterised in that: described main shaft is provided with the shaft shoulder, and the head of main shaft is provided with spline.
A kind of automobile hub bearing moment of friction testing stand the most according to claim 1, it is characterised in that: described drive mechanism includes driving motor, drive pulley, driven pulley and belt;The output shaft of described driving motor is fixed with drive pulley, and drive pulley is connected by belt with driven pulley, and driven pulley is fixed on main shaft.
A kind of automobile hub bearing moment of friction testing stand the most according to claim 3, it is characterised in that: described belt is provided with tensioner;The regulating wheel of described tensioner compresses belt.
CN201410277005.9A 2014-06-19 2014-06-19 A kind of automobile hub bearing moment of friction testing stand Expired - Fee Related CN104111170B (en)

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CN201410277005.9A CN104111170B (en) 2014-06-19 2014-06-19 A kind of automobile hub bearing moment of friction testing stand

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Application Number Priority Date Filing Date Title
CN201410277005.9A CN104111170B (en) 2014-06-19 2014-06-19 A kind of automobile hub bearing moment of friction testing stand

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CN104111170B true CN104111170B (en) 2016-08-17

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* Cited by examiner, † Cited by third party
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CN105738111A (en) * 2016-04-18 2016-07-06 浙江金盾科技股份有限公司 Endurance testing machine for wheel bearing
CN105841963B (en) * 2016-05-09 2018-05-01 青岛科技大学 A kind of friction-loaded brake type bearing running testing stand
CN109187014B (en) * 2018-08-08 2020-02-07 东风汽车集团有限公司 Dynamic friction torque test bench for hub bearing
DE102019108044B4 (en) * 2019-03-28 2020-10-22 IAMT Prüfsysteme GmbH Device for measuring frictional torques on wheel bearings
CN110095217B (en) * 2019-04-26 2020-09-22 杭州电子科技大学 Device and method for measuring friction torque of rolling bearing
CN110017990A (en) * 2019-05-23 2019-07-16 东北大学 A kind of High-speed Train Bearing performance testing device
CN111005995B (en) * 2019-11-07 2021-02-19 武汉理工大学 Transmission system of unmanned test platform vehicle

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Publication number Priority date Publication date Assignee Title
US4763523A (en) * 1987-08-26 1988-08-16 Womble Coy G Roller bearing testing device
US4862738A (en) * 1987-08-20 1989-09-05 Allied-Signal, Inc. Test system for wheel bearings
CN201993232U (en) * 2011-01-21 2011-09-28 华南理工大学 Bus hub bearing loading simulation testing device
CN103398809A (en) * 2013-08-01 2013-11-20 杭州轴承试验研究中心有限公司 Friction torque tester of bearing of automobile hub
CN203929391U (en) * 2014-06-19 2014-11-05 杭州电子科技大学 Automobile hub bearing moment of friction testing table

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4862738A (en) * 1987-08-20 1989-09-05 Allied-Signal, Inc. Test system for wheel bearings
US4763523A (en) * 1987-08-26 1988-08-16 Womble Coy G Roller bearing testing device
CN201993232U (en) * 2011-01-21 2011-09-28 华南理工大学 Bus hub bearing loading simulation testing device
CN103398809A (en) * 2013-08-01 2013-11-20 杭州轴承试验研究中心有限公司 Friction torque tester of bearing of automobile hub
CN203929391U (en) * 2014-06-19 2014-11-05 杭州电子科技大学 Automobile hub bearing moment of friction testing table

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