CN102539039A - Method and equipment for measuring friction torque of radially loaded bearing - Google Patents
Method and equipment for measuring friction torque of radially loaded bearing Download PDFInfo
- Publication number
- CN102539039A CN102539039A CN2011104303207A CN201110430320A CN102539039A CN 102539039 A CN102539039 A CN 102539039A CN 2011104303207 A CN2011104303207 A CN 2011104303207A CN 201110430320 A CN201110430320 A CN 201110430320A CN 102539039 A CN102539039 A CN 102539039A
- Authority
- CN
- China
- Prior art keywords
- measurement
- module
- displacement
- bearing
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention relates to a measuring method and a measuring instrument for a rolling bearing. The measuring instrument comprises a loading module for radially loading to a bearing to be measured, a heating module for controlling the temperature of the bearing to be measured, a measuring module for measuring the friction torque, and a driving module for driving the measuring module. In the invention, the loading module is connected with the measuring module to exert an acting force on the measuring module. With the measuring method and measuring instrument, large-range radial load is exerted to the bearing, and the system error in the measurement on micro friction torque can be kept in an acceptable range under large radial load.
Description
Technical field
The present invention relates to the measuring method and the measuring equipment of bearing, relate to specifically under various load, various rotating speed and all temps the bearing of stand under load is radially carried out method, particularly displacement method and the measuring equipment that moment of friction is measured.
Background technology
From present technology, the method for measuring bearing frictional torque can be divided into direct friction torgue measurement method, trimming moment mensuration and indirect moment of friction mensuration.Referring to " Frictional Moment for Rolling Bearings weary information infer " (Science Press, in July, 2010 first published).
Patent " bearing under micro-loading, The measure of frictional moment of different rotational speed and the survey meter " (patent No. 200610052086.8 publication number CN1865878); Loading radial load mainly is for certain pressure is arranged between bearing enclose; Be convenient to produce moment of friction; Dynamometer records radial load and bearing friction peripheral force sum, and the excessive rear bearing friction of radial force peripheral force is just surveyed not come out fully, so can not load big radial load.
Patent " a kind of proving installation of measuring bearing frictional torque " (patent No. 200710040612.3 publication number CN101050986) only is directed against the measurement of no-load bearing frictional torque.
Patent " micro-bearing friction torgue measuring instrument " (patent No. 200710041970.6 publication number CN101067578) only is directed against the measurement of no-load bearing frictional torque.
Patent " a kind of non-contact type bearing starting friction torgue measurement method and measuring instrument " (application number 200710054386.4 publication number CN101303261) can only be measured bearing starting friction moment, can not apply radial load.
Patent " a kind of miniature bearing dynamic friction torque measuring instrument " (patent No. 200810230784.1 publication number CN101509814) is only measured to the bearing frictional torque of axial load.Patent " surveying instrument of bearing moment of friction under different axial loads, rotating speed " (application number 200910096442.X) is only measured to the bearing frictional torque of axial load
Patent " the friction torque test device of rolling bearing under the low temperature " (patent No. 200110043678.4 publication number CN102175369A) can only be measured bearing starting friction moment.
The measuring equipment that can measure the moment of friction of bearing under different rotating speeds, temperature that receives high radial load is not arranged both at home and abroad so far.
Summary of the invention
The objective of the invention is, providing a kind of can carry out measuring method for measuring and measuring equipment to bearing frictional torque, and said method and apparatus has been realized the high-acruracy survey in different radial loads, different rotating speeds and temperature conditions lower bearing moment of friction.
According to the present invention, this purpose realizes that through following measuring equipment a kind of measuring equipment of radially stand under load bearing frictional torque comprises:
Be used for measured bearing is carried out the load-on module of radial loaded;
Be used for measured bearing is carried out temperature controlled heating module;
Be used to measure the measurement module of moment of friction, this measurement module comprises measurement axis, radial load apply measurement to moment of friction, specifically refer to the noiseless effect of measurement of displacement here;
And the driver module that is used to drive measurement module, the size of radial force is had no effect to rotating speed is provided accurately;
Wherein, said load-on module is connected with said measurement module, thereby said measurement module is applied acting force.
In a kind of preferred implementation, load-on module and measurement module keep at a certain distance away and only are connected to each other through first web member.Preferably, said first web member adopts wire rope, particularly only is a wire rope.The first web member length is adjustable, can avoid some resonance whereby.Certainly, first web member also can be the web member of other type, and like belt, chain etc., quality softness and shearing rigidity are becoming tight best in zero rope, as long as this web member can bear enough big tensile force and have very little lateral stiffness.Its advantage is; Although each self-contained error amplifying element of load-on module and measurement module; But load-on module and measurement module are independently of one another has avoided the interference of load-on module to measuring through making, thereby has avoided owing to very little moment of friction to be measured is difficult to by the problem of accurate measurement.Thus, realized under high radial load accurate measurement to less relatively moment of friction.
In a kind of preferred implementation, said load-on module and said measurement module are connected to each other, and make the axis and said first web member the cutting out in said load-on module of said measurement axis of said measurement module a little be positioned on the surface level.Its advantage is, guaranteed the accurate loading to measured bearing thus, and first web member this when taking place an end with respect to the small deflection of the other end, do not have the moment of resistance.
In a kind of preferred implementation, radial load adopts the gravity and the lever amplification system of counterweight.Its advantage is, obtains a constant power with simple method, and this constant force is moved under any operating mode of measured bearing and can not changed.And when measured bearing did not rotate, radial force stream pointed to BEARING SHAFT all the time automatically.This from making radial loaded can not produce false moment to heart function.
In a kind of preferred implementation, thereby an end of said measurement axis is connected with the output unit of said driver module by said driver module driving, and the other end of said measurement axis is connected with measured bearing to realize measurement.Preferably, the output unit of said driver module is first belt pulley, and second belt pulley and this first belt pulley that are fixed on the said measurement axis are connected to each other through belt, particularly polywedge bet.Preferably, measurement axis and measured bearing are connected to each other through an adapter.Preferably, the head of this adapter is and the right cylinder of the little clearance fit of measured bearing that afterbody is a double-screw bolt.Its advantage is that load-on module separates with driver module, has avoided driver module to adjust the tensile force of driving belt because of the change of radial load.
In a kind of preferred implementation, said first web member is connected on the bearing holder (housing, cover) of measured bearing.Preferably, measured bearing is connected with said bearing holder (housing, cover) through a shell, and particularly said bearing holder (housing, cover) is pressed on the said shell.Preferably, the calibration mass that is used to demarcate is arranged on said bearing holder (housing, cover).Its advantage is, the load-on module automatic centering.
In a kind of preferred implementation, said measurement module comprises non-contact displacement sensor, in order to measuring the change in displacement of measured bearing outer ring, thereby obtains moment of friction.Current vortex sensor particularly, said non-contact displacement sensor comprises sensor measurement sheet and sensor stator.Preferably; Said sensor measurement sheet is arranged on the said bearing holder (housing, cover); And said sensor stator is arranged on one and is used to support measurement axis support said measurement axis, fixing, and its advantage is that non-cpntact measurement has been avoided extra interference is brought in the measurement.
In a kind of preferred implementation, said load-on module comprises loading disc and loads axle.Preferably, said loading axle loads the bracing strut supporting by one and can freely rotate.Preferably, said loading disc is fixed by a loading disc flange and locatees.Preferably, the diameter of said loading disc is greater than the said diameter that loads axle.Preferably, in the side face of said loading disc, be formed with groove, around big half-turn, an end of this second web member cuts out from groove second web member in groove, and the other end is fixed in this groove, on an end that cuts out of this second web member, loads counterweight.
In a kind of preferred implementation; Said heating module comprises well heater particularly electric heater, pressure regulator and heat shield; Wherein said well heater is arranged on and is used to support measurement axis support said measurement axis, fixing, and said heat shield covers on outside the said measurement module.Can realize that probe temperature does not influence the adjusting of other parameter when regulating.
The present invention also proposes a kind of measuring method of bearing frictional torque.According to the method for the invention based on so-called " displacement method ", its principle based on, draw moment of friction through measuring displacement.Because this method is not directly to measure moment of friction, but the displacement that is caused by moment of friction is measured, so avoided sensor itself that measurand is applied acting force, big radial load is loaded becomes possibility.In the method, when measured bearing rotated, because radial load automatic centering principle, bearing radial force flow path passed bearing center.When load receives the effect of bearing frictional torque, its power flow path is after bearing center, but with respect to bearing center minor shifts taken place, and this skew is caused by bearing frictional torque fully.Under the constant situation of test parameter, side-play amount and moment of friction are directly proportional, and thus, the measurement of moment of friction is converted into the measurement of displacement.
Can use in the method according to measuring equipment of the present invention, when an end generation minor shifts of web member, not have the resistance that to predict or can not ignore in the case.So through load-on module is separated with measurement module, and make loading force and measure moment and numerically do not interfere each other.The key problem in technology of this invention is the influence that measurement module structure, operation, range, precision etc. all do not receive the radial load size.
Use is according to measuring equipment of the present invention, and this method may further comprise the steps:
The first step is installed bearing to be measured;
In second step, regulate required load and temperature through control loaded module and heating module;
In the 3rd step, the resonance speed of searching system is so that eliminate its influence;
The 3rd step, equipped with non-contact displacement transducer, particularly eddy current displacement sensor;
In the 4th step, the range of speeds that selection needs is carried out dynamic calibration to system, to draw the relation of displacement and moment of friction;
In the 5th step, take off all calibration mass, and measure.
Radially stand under load and with the bearing that certain speed rotates can not leave and rock, vibrates even resonate to avoid the moment of friction dynamic change.Through analog to digital conversion, adopt digital sample and filtering, data processing method such as average to obtain moment of friction.
In a kind of preferred implementation, said dynamic calibration carries out as follows: load and demarcate load, particularly hang up the known counterweight of weight.The displacement corresponding to the demarcation load measurement of each loading.Result to repeatedly measuring averages the relation that obtains moment and displacement, as calibration result.
In a kind of preferred implementation; In said the 5th step; Control and driving module is to reach required measurement rotating speed; The measurement axis of measurement module is just being changeed with this measurement rotating speed be rotated in a first direction and measure the first displacement a in other words; The measurement axis that makes measurement module again rotates and measures the second displacement b in the opposite direction with this measurement rotating speed edge of reversing in other words with first party, the difference of utilizing the said first displacement a and the second displacement b draws the moment of friction of measured bearing under this rotating speed as in the twice of measuring rotating speed displacement down with (a-b)/2 and calibration value to this.
In a kind of preferred implementation; In said the 5th step; Control and driving module is lower than the slow-speed of revolution of measuring rotating speed to reach one; The measurement axis of measurement module is just being changeed with this measurement rotating speed be rotated in a first direction and measure triple motion in other words; The measurement axis that makes measurement module is again rotated in the opposite direction with first party and is measured the 4th displacement with this measurement rotating speed edge of reversing in other words, utilizes the difference of said triple motion and the 4th displacement and draws the moment of friction of measured bearing under this slow-speed of revolution through comparing with calibration structure, then; Control and driving module is to reach said measurement rotating speed; The measurement axis of measurement module is just being changeed with this measurement rotating speed and measure first displacement, the difference of first displacement and triple motion is obtained in the displacement of measuring under the rotating speed as increment, and drawn the moment of friction of measured bearing under this rotating speed through comparing with calibration structure.
Description of drawings
Fig. 1 is a bearing frictional torque measuring equipment front elevation.
Fig. 2 is a bearing frictional torque measuring equipment vertical view cutaway drawing.
Fig. 3 is measurement module and driver module front elevation.
Fig. 4 is the front elevation of load-on module.
Fig. 5 is the cut-open view of load-on module along the A-A line among Fig. 2.
Fig. 6 is the cut-open view of adapter and measured bearing.
Fig. 7 is the cut-open view of measurement module along the B-B line of Fig. 2.
Embodiment
Fig. 1 illustrate according to of the present invention, be used to measure the radially measuring equipment of the moment of friction of bearing under conditions such as different rotating speeds, temperature of stand under load.This measuring equipment comprise be used for to measured bearing carry out radial loaded load-on module 1, be used for measured bearing is carried out temperature controlled heating module 3 and is used to the driver module 2 measuring the measurement module 4 of moment of friction and be used to drive measurement module.Said load-on module 1, driver module 2, heating module 3 and measurement module 4 all are installed on the stationary plane, and this stationary plane can be that ground also can be a base.
Load-on module 1 is connected to each other through first web member 23 with measurement module 4.In a kind of preferred implementation, this first web member is a wire rope, respectively forms a closed loop at the two ends of this wire rope, said closing on the screw that is enclosed within load-on module and measurement module respectively.
Said load-on module 1 comprises loading counterweight 32 and force loading device, and this force loading device is connected with measurement module 4 through first web member 23.Force loading device comprises loading disc 29 and loads axle 38.Utilize one to load bracing strut 28 supportings and load axle 38 and it can freely be rotated, utilize a loading disc flange 39 to fix and locate loading disc 29.Loading disc 29 diameter dimensions are greater than loading axle 38 diameters, the loading force that obtains amplifying according to equalising torque.In the side face of loading disc 29, be formed with groove 42, the second web members 31 in groove around big half-turn.One end of this second web member 31 cuts out from groove, and the other end is fixed in this groove.Load counterweight 32 like this and just can be hung on the end that cuts out of this second web member 31, and it is applied power along the tangential direction of loading disc 29.
Said load-on module 1 also comprises and is used for being fixed on the stationary plane force loading device and loading axle base plate 27 fixing and location loading bracing strut 28.
In one embodiment, loading disc is that the screw flange is connected with loading between the axle, loads axle and is connected through bearing with the loading bracing strut, and brearing bore and cylindrical all are interference fit, and loading between bracing strut and the base plate is that bolt connects.
Said measurement module 4 comprises measures base plate 6, measurement axis support 7 and measurement axis 22.Cutting out of first web member 23 a little must be on a surface level in the axis of measurement axis 22 and the load-on module 1 in the measurement module 4.Measuring base plate 6 is connected, for example is connected through bolt with ground and measurement axis support 7.Measurement axis support 7 is used to support measurement axis 22, for example supports through bearing.One end of measurement axis 22 is connected with a belt pulley 35 to realize axle and the synchronous rotation of taking turns, and the other end is connected with measured bearing 16.This belt pulley is connected with the driving wheel of driver module through belt.This driving wheel is connected with the motor axle key of driver module.This belt is polywedge bet and is applied in pretightning force.
Being connected through an adapter 17 of measurement axis 22 and measured bearing 16 realize, the head of this adapter is and the right cylinder of measured bearing 16 little clearance fit, and afterbody is a double-screw bolt, and the material of double-screw bolt, size will be carried out Stress Check.Adapter 17 sizes own can position measured bearing 16, thereby are fastened on adapter 17, go up and to be fastened on 22 last times of measurement axis when measured bearing 16, and the middle face perpendicular to axis of measured bearing 16 is just in time aimed at the groove 42 of the loading axle 38 of load-on module 1.On adapter 17, reserve one section be processed into square, but lower ejector lever is tightened in 22 last times of measurement axis with spanner with adapter 17, needs block measurement axis 22 with pipe wrench.Adapter 17 axial centre are left screw, and measured bearing 16 installs the back and blocks with catch 44, and screw 43 is tightly lived, and the catch outer rim can only be pushed down bearing inner race, can not bearing all be pushed down.
Measured bearing 16 is connected with bearing holder (housing, cover) 14 through shell 15, and bearing holder (housing, cover) 14 is pressed on the shell 15 through screw 19.Bearing holder (housing, cover) 14 is connected with load-on module 1 through first web member 23, thereby realizes the loading of big load.Shell 15 internal diameters and measured bearing 16 external diameter interference fit, thickness equate that with measured bearing 16 thickness shell 15 external diameters equate that with bearing holder (housing, cover) 14 internal diameters thickness equates with bearing holder (housing, cover) 14 thickness.Measurement bearing to different need be used different adapters and shell.Bearing holder (housing, cover) 14 is pressed on the shell 15, realizes being synchronized with the movement of bearing holder (housing, cover) 14, shell 15 and bearing outer ring.
Measurement module 4 comprises eddy current displacement sensor.Eddy current displacement sensor comprises sensor measurement sheet 12 and sensor stator 11.
On bearing holder (housing, cover) 14, be provided with sensor measurement sheet 12, and on measurement axis support 7, be provided with sensor stator 11.Sensor measurement sheet 12 is synchronized with the movement with bearing holder (housing, cover) 14, so measured bearing 16 inner ring spin frictions cause the micro-corner of bearing outer ring finally can be converted into the circumferential displacement of sensor measurement sheet 12.Carrying out timing signal, on bearing holder (housing, cover) 14, be provided with the calibration mass 21 that is hitched by filament 20, calibration mass 21 can produce a moment to rotation center, and this moment can cause the displacement of corresponding sensor measurement sheet 12, thus the relation of the moment of obtaining and displacement.
In a kind of preferred implementation; Connect through bearing between measurement axis and the measurement axis support; Brearing bore and cylindrical all are interference fit, and loading between bracing strut and the base plate is that bolt connects, and adapter is that bolt is connected with measurement axis; Adapter and measured bearing endoporus are clearance fit or interference fit, and the measured bearing cylindrical is an interference fit with shell.
Heating module 3 comprises tracklayer heater 13, pressure regulator 34 and heat shield 8.Tracklayer heater 13 is placed on the measurement axis support 7, and heat shield 8 covers on outside the measurement module 4.The rectangular parallelepiped support that heat shield 8 is welded for iron plate; But for adding of calibration mass 21 unload the operation fall in one; Each face stickup sheathing paper plays heat insulation effect on the heat shield 8; 8 of heat shields cover measurement module 4 major parts with heating, so measurement module 4 is connected part with the external world and all will on sheathing paper, opens corresponding gap.Heat insulation support is that iron plate is welded, and ceramic fiber paper is bonded at the heat shield periphery through glue.
In illustrated embodiment, loading force imposes on second web member 31 through counterweight 32, passes to measurement module 4 through loading disc 29, loading axle 38 and first web member 23 again.In this power bang path, between loading axle 38 and measurement module 4, there are and only have the 23 participation power transmission of first web member.
Below the measuring method of bearing frictional torque is described.
When the equipment of stating in the use carries out the measurement of moment to measured bearing, bearing to be measured is installed at first, is adjusted required load and temperature through control loaded module and heating module.The motor of starting driver module; Make motor speed linear change and then the rotating speed that makes measurement axis linear change lentamente in the required measurement range of speeds lentamente in the required measurement range of speeds; To find the rotating speed that resonance can take place, abbreviate resonance speed as.In formal experiment, through the control motor so that its rotating speed change in this resonance speed place step, thereby skip this resonance speed.
After finding resonance speed, eddy current displacement sensor is installed.
At a specific rotation speeds place system is carried out dynamic calibration.Wherein, rotating speed is added to the average place of the required measurement range of speeds, can not resonate here.If the oscillography waveform is better, the little noise of amplitude is little, then under this rotating speed, does calibration experiment; Method is for to hang calibration mass on filament, calibration mass of every extension is adopted once appearance; SF will be adjusted according to rotating speed, guarantees that each cycle can both adopt 50-60 point.According to the moment of the paired rotation center of gravity reduction of calibration mass, obtain the relation of moment and displacement in conjunction with the sampling average, become calibration result.Why to let bearing rotate and carry out dynamic calibration; Rather than when bearing is static, carry out static demarcating; Be because the stationary state lower bearing has stiction; Calibration mass is less, because the effect of stiction makes same calibration mass lower bearing reach balance in a plurality of positions, can not truly reflect the relation of moment and displacement.When bearing rotated, stiction became kinetic force of friction, had solved this problem, and calibration result is reliable and stable, and is linear good.
Take off all calibration mass, motor speed is modulated required measurement rotating speed, just change earlier; The back counter-rotating because bearing is axisymmetric, can think that bearing is being an equal and opposite in direction with the moment of friction of just changeing the counter-rotating generation under the condition; In the opposite direction, therefore show in the displacement of sensor measurement sheet also to be equal and opposite in direction, in the opposite direction; Rotating is sampled separately, and the displacement average that obtains is subtracted each other (promptly approximately to the value addition), thinks the displacement that 2 times of moment of frictions cause; With the calibration result contrast, obtaining a moment of friction again, promptly is the moment of friction of measured bearing under this load, this temperature, this rotating speed.
In some high rotating speed experiment, skip resonance speed always because just changeing counter-rotating, control is got up very inconvenient, therefore can adopt following method:
Under a slow-speed of revolution, do earlier the rotating experiment and ask poor, can think with respect to slow-revving increment and equal high rotating speed that therefore high rotating speed can only be done and just change experiment just changeing high rotating speed with respect to slow-revving increment.Such as under 1000rpm, just changeing displacement average x1; Reverse displacement average x2; The displacement that 1000rpm moment of friction causes is (x1-x2)/2, and it is y1 that the positive transposition under 3000rpm moves average, and the displacement that 3000rpm moment of friction causes is (x1-x2)/2+ (y1-x1).
Reference numerals list
1 load-on module
2 driver modules
3 heating modules
4 measurement modules
Load-on module
32 load counterweight
29 loading discs
38 load axle
31 second web members
27 load the axle base plate
28 load bracing strut
39 loading disc flanges
42 load the groove of axle
Measurement module
6 measure base plate
7 measurement axis supports
22 measurement axis
35 belt pulleys
16 measured bearings
17 adapters
15 shells
14 bearing holder (housing, cover)s
23 first web members
12 sensor measurement sheets
11 sensor stators
20 filaments
21 calibration mass
35 polywedge bets wheel
19 screws
Heating module
13 tracklayer heaters,
34 pressure regulators
8 heat shields.
Claims (21)
1. the measuring equipment of a Frictional Moment for Rolling Bearings comprises:
Be used for measured bearing is carried out the load-on module (1) of radial loaded;
Be used for measured bearing is carried out temperature controlled heating module (3);
Be used to measure the measurement module (4) of moment of friction, this measurement module comprises measurement axis, radial load apply measurement to moment of friction, specifically refer to the noiseless effect of measurement of displacement here;
And the driver module (2) that is used to drive measurement module, the size of radial force is had no effect to rotating speed is provided accurately;
Wherein, said load-on module (1) is connected with said measurement module (4), thereby said measurement module (4) is applied acting force.
2. measuring equipment according to claim 1 is characterized in that, said load-on module (1) keeps at a certain distance away and only is connected to each other through first web member (23) with said measurement module (4).
3. measuring equipment according to claim 2 is characterized in that the length of said first web member (23) can be conditioned to avoid resonance.
4. measuring equipment according to claim 2 is characterized in that; Said first web member (23) is that wire rope, belt, chain or quality softness and shearing rigidity level off to zero rope, and said first web member (23) can bear enough big tensile force and have very little lateral stiffness.
5. measuring equipment according to claim 1; It is characterized in that; Said measurement axis (22) thus an end be connected with the output unit of said driver module and driven by said driver module, the other end of said measurement axis (22) is connected with measured bearing (16) to realize measurement.
6. measuring equipment according to claim 1 is characterized in that the output unit of said driver module is first belt pulley, and second belt pulley and this first belt pulley that are fixed on the said measurement axis are connected to each other through belt, particularly polywedge bet.
7. measuring equipment according to claim 1; It is characterized in that; Said measurement axis (22) is connected to each other through an adapter (17) with measured bearing (16), and the head of this adapter (17) is and the right cylinder of the little clearance fit of measured bearing (16) that afterbody is a double-screw bolt.
8. measuring equipment according to claim 1 and 2 is characterized in that, said first web member (23) is connected on the bearing holder (housing, cover) (14) of measured bearing (16), and particularly wherein, measured bearing (16) is connected with said bearing holder (housing, cover) (14) through a shell (15).
9. measuring equipment according to claim 8 is characterized in that said first web member (23) can be fastened on the said bearing holder (housing, cover) (14).
10. measuring equipment according to claim 9 is characterized in that, said bearing holder (housing, cover) (14) is pressed on the said shell (15), and the calibration mass that is used to demarcate is arranged on said bearing holder (housing, cover) (14).
11. measuring equipment according to claim 1 is characterized in that, said measurement module (4) comprises non-contact displacement transducer, and said non-contact displacement transducer is used to measure the change in displacement of measured bearing outer ring, thereby obtains moment of friction.
12. measuring equipment according to claim 11 is characterized in that, said non-contact displacement transducer is an eddy current sensor.
13. measuring equipment according to claim 11; It is characterized in that; Said non-contact displacement transducer comprises sensor measurement sheet (12) and sensor stator (11); Said sensor measurement sheet (12) is arranged on the said bearing holder (housing, cover) (14), and said sensor stator (11) is arranged on one and is used to support measurement axis support (7) said measurement axis (22), fixing.
14. measuring equipment according to claim 1 and 2; It is characterized in that; Said load-on module (1) comprises loading disc (29) and loads axle (38); Said loading axle (38) loads bracing strut (28) supporting by one and can freely rotate, and said loading disc (29) is fixed by a loading disc flange (39) and locatees.
15. measuring equipment according to claim 14 is characterized in that, the diameter of said loading disc (29) is greater than the said diameter that loads axle (38).
16. measuring equipment according to claim 14 is characterized in that in the side face of said loading disc (29), being formed with groove (42); Second web member (31) in groove around big half-turn; One end of this second web member (31) cuts out from groove; The other end is fixed in this groove, on an end that cuts out of this second web member (31), loads counterweight (32).
17. measuring equipment according to claim 1 and 2; It is characterized in that; Said heating module (3) comprises well heater (13), pressure regulator (34) and heat shield (8); Wherein said well heater (13) is arranged on and is used to support measurement axis support (7) said measurement axis (22), fixing, and said heat shield (8) covers on outside the said measurement module (4).
18. the measuring method of a Frictional Moment for Rolling Bearings, this method may further comprise the steps:
The first step is installed bearing to be measured,
Second step regulated required load and temperature through control loaded module and heating module,
In the 3rd step, the resonance speed of searching system is so that eliminate its influence
The 3rd step, the equipped with non-contact eddy current displacement sensor,
The 4th step, select the specific rotation speeds scope and system is carried out dynamic calibration, drawing the relation of displacement and moment of friction,
In the 5th step, take off all calibration mass, and measure.
19. measuring method according to claim 18; It is characterized in that; Said dynamic calibration carries out as follows: load and demarcate load; Particularly hang up the known counterweight of weight, corresponding to the demarcation load measurement of each loading then displacement, to the result who repeatedly measures average obtain moment and displacement relation as calibration result.
20. measuring method according to claim 18; It is characterized in that; In said the 5th step; Control and driving module is to reach required measurement rotating speed, and the measurement axis of measurement module is just being changeed with this measurement rotating speed and measured the first displacement a, and the measurement axis that makes measurement module again is with this measurement rotating speed counter-rotating and measure the second displacement b; The difference of utilizing said first displacement and second displacement draws the moment of friction of measured bearing under this rotating speed as in the twice of measuring the displacement under the rotating speed with (a-b)/2 and calibration value contrast.
21. measuring method according to claim 18; It is characterized in that in said the 5th step, control and driving module is lower than the slow-speed of revolution of measuring rotating speed to reach one; The measurement axis of measurement module is just being changeed with this measurement rotating speed and measure triple motion; The measurement axis that makes measurement module again is with this measurement rotating speed counter-rotating and measure the 4th displacement, utilizes the difference of said triple motion and the 4th displacement and draws the moment of friction of measured bearing under this slow-speed of revolution through comparing with calibration structure, then; Control and driving module is to reach said measurement rotating speed; The measurement axis of measurement module is just being changeed with this measurement rotating speed and measure first displacement, the difference of first displacement and triple motion is obtained in the displacement of measuring under the rotating speed as increment, and drawn the moment of friction of measured bearing under this rotating speed through comparing with calibration structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110430320.7A CN102539039B (en) | 2011-12-20 | 2011-12-20 | Method and equipment for measuring friction torque of radially loaded bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110430320.7A CN102539039B (en) | 2011-12-20 | 2011-12-20 | Method and equipment for measuring friction torque of radially loaded bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102539039A true CN102539039A (en) | 2012-07-04 |
| CN102539039B CN102539039B (en) | 2015-04-01 |
Family
ID=46346492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110430320.7A Active CN102539039B (en) | 2011-12-20 | 2011-12-20 | Method and equipment for measuring friction torque of radially loaded bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102539039B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568259A (en) * | 2015-01-14 | 2015-04-29 | 清华大学 | Method and testing device for obtaining steady-state drag torque of multi-wheel-belt transmission system |
| CN104615166A (en) * | 2013-11-01 | 2015-05-13 | 中国科学院西安光学精密机械研究所 | Thermal micro-adjusting system and method for pre-tightening force of space rotary table shafting |
| CN108195497A (en) * | 2017-11-29 | 2018-06-22 | 北京控制工程研究所 | A kind of in-orbit friction torque test method of kinetic pressure air-float bearing of inner |
| CN108225637A (en) * | 2017-03-30 | 2018-06-29 | 上海航天设备制造总厂 | Driving mechanism driving moment test device and method |
| CN108760125A (en) * | 2018-07-17 | 2018-11-06 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of bearing element measurement of friction torque method |
| CN108844745A (en) * | 2018-04-28 | 2018-11-20 | 清华大学 | The kinetic parameter identification method of hybrid power automobile driving system |
| CN116929764A (en) * | 2023-07-31 | 2023-10-24 | 上海大学 | Measuring equipment for dynamic oil film thickness and pressure of wind power sliding bearing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040211269A1 (en) * | 2003-04-24 | 2004-10-28 | Minebea Co., Ltd. | Device and method for measuring torque on an electric motor |
| CN1687728A (en) * | 2005-05-24 | 2005-10-26 | 浙江大学 | Method and device for measuring friction force of bearing under tiny load |
| CN201066314Y (en) * | 2007-07-27 | 2008-05-28 | 合肥工业大学 | Integrated inspection instrument for friction torque of rolling bearing |
| CN101226130A (en) * | 2008-01-25 | 2008-07-23 | 成都理工大学 | Method for regulating and controlling water pressure of seepage flow water outlet end |
-
2011
- 2011-12-20 CN CN201110430320.7A patent/CN102539039B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040211269A1 (en) * | 2003-04-24 | 2004-10-28 | Minebea Co., Ltd. | Device and method for measuring torque on an electric motor |
| CN1687728A (en) * | 2005-05-24 | 2005-10-26 | 浙江大学 | Method and device for measuring friction force of bearing under tiny load |
| CN201066314Y (en) * | 2007-07-27 | 2008-05-28 | 合肥工业大学 | Integrated inspection instrument for friction torque of rolling bearing |
| CN101226130A (en) * | 2008-01-25 | 2008-07-23 | 成都理工大学 | Method for regulating and controlling water pressure of seepage flow water outlet end |
Non-Patent Citations (1)
| Title |
|---|
| 邓四二等: "角接触球轴承摩擦力矩特性研究", 《机械工程学报》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104615166A (en) * | 2013-11-01 | 2015-05-13 | 中国科学院西安光学精密机械研究所 | Thermal micro-adjusting system and method for pre-tightening force of space rotary table shafting |
| CN104615166B (en) * | 2013-11-01 | 2017-05-03 | 中国科学院西安光学精密机械研究所 | Thermal micro-adjusting system and method for pre-tightening force of space rotary table shafting |
| CN104568259A (en) * | 2015-01-14 | 2015-04-29 | 清华大学 | Method and testing device for obtaining steady-state drag torque of multi-wheel-belt transmission system |
| CN108225637A (en) * | 2017-03-30 | 2018-06-29 | 上海航天设备制造总厂 | Driving mechanism driving moment test device and method |
| CN108195497A (en) * | 2017-11-29 | 2018-06-22 | 北京控制工程研究所 | A kind of in-orbit friction torque test method of kinetic pressure air-float bearing of inner |
| CN108844745A (en) * | 2018-04-28 | 2018-11-20 | 清华大学 | The kinetic parameter identification method of hybrid power automobile driving system |
| CN108844745B (en) * | 2018-04-28 | 2020-02-04 | 清华大学 | Kinetic parameter identification method of hybrid electric vehicle transmission system |
| CN108760125A (en) * | 2018-07-17 | 2018-11-06 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of bearing element measurement of friction torque method |
| CN108760125B (en) * | 2018-07-17 | 2020-07-10 | 中国空气动力研究与发展中心超高速空气动力研究所 | Method for measuring rolling friction torque of bearing |
| CN116929764A (en) * | 2023-07-31 | 2023-10-24 | 上海大学 | Measuring equipment for dynamic oil film thickness and pressure of wind power sliding bearing |
| CN116929764B (en) * | 2023-07-31 | 2024-05-17 | 上海大学 | Measuring equipment for dynamic oil film thickness and pressure of wind power sliding bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102539039B (en) | 2015-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102539039B (en) | Method and equipment for measuring friction torque of radially loaded bearing | |
| CN100529699C (en) | Micro-bearing friction torgue measuring instrument | |
| CN201607302U (en) | Axial force testing device of continuously variable transmission | |
| CN101487751B (en) | Measuring apparatus for frictional moment of bearing under different axial loads and rotation speeds | |
| CN107664549B (en) | Accurate measuring device for friction torque of mechanical seal end face | |
| CN101762353B (en) | CVT (Contiuously Variable transmission) axial force test device | |
| CN201497602U (en) | Friction moment measurement device of bearing | |
| CN102519639A (en) | Friction torque measurement apparatus of horizontal bearing | |
| CN110186678A (en) | High-speed bearing measurement of friction torque system | |
| CN104236907A (en) | Rolling bearing friction moment and stiffness measuring device and method | |
| CN106017758A (en) | Online synchronous test device and method for dynamic/static torque of motor | |
| CN210741740U (en) | Calibration device for torque sensor | |
| CN109959514A (en) | Match angular contact ball bearing dynamic friction performance online test device | |
| CN110411631A (en) | A kind of torque sensor | |
| CN102410898A (en) | Test method for friction torque of back-to-back pairing minitature ball bearing under application of axial loads | |
| CN105784094A (en) | Vibration noise measurement instrument for tapered bore cylindrical roller bearing | |
| CN106840672B (en) | Match bearing differential retainer dynamic property tester | |
| CN208399123U (en) | A kind of testing stand for spring fatigue test | |
| CN101144743A (en) | Freewheeling clutch dynamic friction torque tester | |
| CN108332894A (en) | Deep groove ball bearing high speed rotation torque detecting apparatus | |
| US3027749A (en) | Bearing torque test instrument | |
| CN109612631B (en) | Engine rotational inertia measuring device | |
| CN108444661A (en) | A kind of canted coil spring fatigue test board | |
| CN105954032B (en) | A kind of magnetic liquid lubrication floating-ring bearing test system and method | |
| CN202362101U (en) | Horizontal bearing friction torque measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |