CN208999099U - Vertical rolling bearing equlvalent coefficient of friction measuring device - Google Patents
Vertical rolling bearing equlvalent coefficient of friction measuring device Download PDFInfo
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- CN208999099U CN208999099U CN201821777830.5U CN201821777830U CN208999099U CN 208999099 U CN208999099 U CN 208999099U CN 201821777830 U CN201821777830 U CN 201821777830U CN 208999099 U CN208999099 U CN 208999099U
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Abstract
The utility model discloses a kind of vertical rolling bearing equlvalent coefficient of friction measuring devices, including fuselage, slide unit, mandrel, two bearing blocks, speed probe and data acquisition/processing/calculating/display system.One of bearing block and fuselage are connected, another is connected with slide unit；A is tested housing washer and is installed on the bearing block shoulder block being connected with fuselage, and B is tested housing washer and is installed on the bearing block shoulder block being connected with slide unit；A is tested rolling bearing inner ring and is installed on mandrel one end shaft shoulder, and B is tested rolling bearing inner ring and is installed on the mandrel other end shaft shoulder；Slide unit can be under the guidance of guiding parts along the axial direction translation of the inner cylinder face of bearing block；Data acquisition/processing/calculating/display system is used to acquire, handle the angular velocity signal for the mandrel that speed probe monitors, calculates the equivalent friction torque and equlvalent coefficient of friction of tested rolling bearing.The utility model measuring device has the ability of fast precise measurement rolling bearing equivalent friction torque and equlvalent coefficient of friction.
Description
Technical field
The utility model belongs to rolling bearing friction energy loss characteristic test technical field, is related to a kind of vertical rolling bearing and works as
Measure friction coefficient measuring apparatus.
Background technique
Friction energy loss in rolling bearing operational process directly affects fever, temperature rise and abrasion of bearing etc., and then influences
The performance of rolling bearing and service life.The friction energy loss characteristic of rolling bearing is a kind of inherent characteristic of rolling bearing itself, centainly
The manufacture quality and clean-up performance of rolling bearing are reflected in degree.
Starting moment of friction and pivoting friction torque is respectively adopted at this stage to evaluate the starting friction energy loss of rolling bearing
With pivoting friction energy consumption, and the starting frictional force of tested rolling bearing is measured using various Frictional Moment for Rolling Bearings measuring device
Square and pivoting friction torque.
Since the starting moment of friction of rolling bearing under test condition and the amplitude of pivoting friction torque are smaller, existing rolling
Precision is not obviously when carrying out high-acruracy survey for micro- power used in dynamic bearing measurement of friction torque device or micro-torque sensor
Foot.Therefore, need to develop a kind of new measurement for detecting rolling bearing friction energy loss characteristic.
Utility model content
In view of the problems of the existing technology, the utility model proposes one kind rolls for angular contact ball bearing and single-row circular cone
Sub- bearing equlvalent coefficient of friction measuring device.Rolling bearing described in the utility model refers in particular to angular contact ball bearing and single-row circular cone
Roller bearing.In the utility model, tested rolling bearing is abstracted as to a contact angle is constant, the face of being slidably matched is crossed in rolling element
The virtual sliding bearing of the heart, i.e., the described virtual sliding bearing are that a contact angle is equal with tested rolling bearing contact angle α, slide
The virtual sliding bearing at the excessively tested rolling bearing rolling element center of mating surface, the inner ring and outer ring of the virtual sliding bearing exist
It is slidably matched at face and forms sliding friction pair.The virtual sliding bearing is in survey identical with corresponding tested rolling bearing
It measures under operating condition, the friction power loss of the sliding friction pair is equivalent to the friction power loss of tested rolling bearing, the sliding friction pair
Friction horsepower be equal to the sliding friction torque of the sliding friction pair and multiplying for the revolution angular speed of the virtual sliding bearing
Product, the sliding friction torque of the sliding friction pair are equal to the central radius R in the face that is slidably matched, described are slidably matched at face
Normal direction load and the sliding friction pair coefficient of friction product.The sliding friction torque of the sliding friction pair is denoted as
The equivalent friction torque of tested rolling bearing described in the utility model, the coefficient of sliding friction of the sliding friction pair is denoted as
The equlvalent coefficient of friction of tested rolling bearing described in the utility model.Equlvalent coefficient of friction described in the utility model objectively responds
The manufacture quality and clean-up performance of tested rolling bearing belongs to the inherent characteristic of tested rolling bearing.The vertical rolling of the utility model
Dynamic bearing equlvalent coefficient of friction measuring device has the ability of fast precise measurement rolling bearing equlvalent coefficient of friction.
In order to solve the above-mentioned technical problem, the utility model proposes a kind of vertical rolling bearing equlvalent coefficient of friction measurement dresses
It sets, which includes fuselage, slide unit, mandrel, two bearing blocks, speed probe and data acquisition/processing/calculating/aobvious
Show system；Described two bearing blocks, one of them is connected with the fuselage, another is connected with the slide unit；Described two axis
It holds seat and is respectively provided with inner cylinder face and shoulder block that installation A is tested the outer ring of rolling bearing and the tested rolling bearing of B；The core
The both ends of axis are respectively provided with the shaft shoulder that installation A is tested the inner ring of rolling bearing and the tested rolling bearing of B；Described two bearings
The inner cylinder face of seat is coaxial；The slide unit is under external force along the axial direction translation of the inner cylinder face of described two bearing blocks；Packet
Include the mandrel, A is tested the components that rolling bearing and B are tested including rolling bearing and together constitutes the utility model measurement dress
The rotary axis system set, the movement parts on the rotary axis system include that the mandrel, A are tested that the inner ring of rolling bearing, B are tested to be rolled
Inner ring, the A of bearing are tested the rolling element of rolling bearing, B is tested the rolling element of rolling bearing, A is tested the retainer of rolling bearing
The retainer of rolling bearing is tested with B；The speed probe is used to monitor the angular speed of the mandrel；The data acquisition/
Processing/calculating/display system is used to acquire, handle the angular velocity signal for the mandrel that the speed probe monitors, meter
It calculates and shows A is tested rolling bearing and B is tested rolling bearing equivalent friction torque and equlvalent coefficient of friction.
In the utility model, the rotary axis system is vertical layout, and the axis of the inner cylinder face of described two bearing blocks hangs down
Directly in horizontal plane.
When carrying out equlvalent coefficient of friction measurement using the vertical rolling bearing equlvalent coefficient of friction measuring device of the utility model,
Measurement in pairs need to be carried out twice to two tested rolling bearings；Due to the influence of the gravity G of the rotary axis system of vertical layout, measurement
Two tested rolling bearings carry the axial load that both direction differs in size on the contrary respectively in the process；According to measurement process twice
The middle position because of two tested rolling bearings exchange caused by different information parse the equivalents of two tested rolling bearings and rub
Wipe torque and equlvalent coefficient of friction.
Compared with prior art, the utility model has the beneficial effects that
On the one hand, the angular velocity measurement precision of speed probe is much higher than conventional rolling bearing measurement of friction torque device institute
The measurement accuracy of the micro- power or micro- moment sensor that use；On the other hand, all movement parts tool on rotary axis system is well-regulated
Geometry, the size of known high precision and quality, specific motion mode and accurate movement velocity, thus rotating shaft
It is that total kinetic energy has very high computational accuracy.Therefore the equivalent friction torque of tested rolling bearing and equlvalent coefficient of friction all have
High measurement/computational accuracy.
Further, the utility model can also be by increasing the quality of the movement parts on rotary axis system to promote rotating shaft
The initial kinetic energy of system, the die-away time for extending rotary axis system angular speed, further increase the measurement accuracy of rotary axis system angular speed,
And then improve the equivalent friction torque of tested rolling bearing and measurement/computational accuracy of equlvalent coefficient of friction.
Detailed description of the invention
Fig. 1-1 is the structural schematic diagram of tested angular contact ball bearing；
Fig. 1-2 is the virtual sliding bearing schematic diagram that angular contact ball bearing is tested shown in Fig. 1-1；
Fig. 2-1 is the structural schematic diagram of tested single-row tapered roller bearing；
Fig. 2-2 is the virtual sliding bearing schematic diagram that single-row tapered roller bearing is tested shown in Fig. 2-1；
Fig. 3 is partial structurtes signal and the measuring principle figure of vertical rolling bearing equlvalent coefficient of friction measuring device.
In figure:
1- inner ring；
The outer ring 2-；
3- rolling element；
The inner ring of the virtual sliding bearing of 4-；
The outer ring of the virtual sliding bearing of 5-；
6- is slidably matched face；
7- fuselage；
8- slide unit；
9- bearing block；
10- shoulder block；
11- inner cylinder face；
12- mandrel；
The 13- shaft shoulder；
14-A is tested rolling bearing；
15-B is tested rolling bearing.
Specific embodiment
The utility model is described in further detail below in conjunction with figure embodiment.The implementation described by reference to attached drawing
Example is exemplary, it is intended to for explaining the utility model, and should not be understood as limiting the present invention.In addition, following
Size, material, shape and its relative configuration of the constituent part recorded in embodiment etc., such as without special specific record, and
The scope of the utility model this is not only limitted to.
Rolling bearing described in the utility model includes angular contact ball bearing and single-row tapered roller bearing, and Fig. 1-1 is shown
The structure of angular contact ball bearing, Fig. 2-1 show the structure of single-row tapered roller bearing.In the utility model, by tested rolling
Dynamic bearing is abstracted as that a contact angle is constant, the virtual sliding at the center of the rolling element 3 of the excessively tested rolling bearing in the face 6 that is slidably matched
Bearing, i.e., the described virtual sliding bearing are that a contact angle is equal with tested rolling bearing contact angle α, 6 quilts are crossed in the face of being slidably matched
The virtual sliding bearing for surveying the center of the rolling element 3 of rolling bearing, it is corresponding with angular contact ball bearing is tested shown in Fig. 1-1
Virtual sliding bearing is as shown in Figs. 1-2, and virtual sliding bearing corresponding with single-row tapered roller bearing is tested shown in Fig. 2-1 is such as
Shown in Fig. 2-2, the inner ring 4 of the virtual sliding bearing and the outer ring 5 of virtual sliding bearing form sliding at the face of being slidably matched 6
Friction is secondary.The virtual sliding bearing is under Test Cycle identical with corresponding tested rolling bearing, the sliding rubs
The friction power loss that secondary friction power loss is equivalent to tested rolling bearing is wiped, the friction horsepower of the sliding friction pair is equal to the cunning
The product of the revolution angular speed of the sliding friction torque of dynamic friction pair and the virtual sliding bearing, the cunning of the sliding friction pair
Dynamic friction torque is equal to the central radius R in the face that is slidably matched, the normal direction load at the face that is slidably matched and the sliding
The product of the coefficient of friction for the pair that rubs.The sliding friction torque of the sliding friction pair is denoted as described in the utility model tested
The coefficient of sliding friction of the sliding friction pair is denoted as described in the utility model tested by the equivalent friction torque of rolling bearing
The equlvalent coefficient of friction of rolling bearing.
Fig. 3 show the utility model proposes a kind of vertical rolling bearing equlvalent coefficient of friction measuring device, the measurement
Device include fuselage 7, slide unit 8,12, two bearing blocks 9 of mandrel, speed probe (being not drawn into figure) and data acquisition/processing/
Calculating/display system (is not drawn into) in figure.
Described two bearing blocks 9, one of them is connected with the fuselage 7, another is connected with the slide unit 8；Described two
A bearing block 9 is respectively provided with the shoulder block 10 and inner circle that installation A is tested the outer ring of rolling bearing 14 and the tested rolling bearing 15 of B
Cylinder 11；The both ends of the mandrel 12 are respectively provided with the inner ring that installation A is tested rolling bearing 14 and the tested rolling bearing 15 of B
The shaft shoulder 13；The inner cylinder face 11 of described two bearing blocks 9 is coaxial；The slide unit 8 (can be not drawn into) in guiding parts in figure
The described two bearing blocks 9 of guidance lower edge inner cylinder face 11 axial translation；Rolling bearing is tested including the mandrel 12, A
Components including the tested rolling bearing 15 of 14 and B constitute the rotary axis system of the utility model measuring device, the rotating shaft
The movement parts fastened include the mandrel 12, A is tested the inner ring of rolling bearing 14, B is tested the inner ring of rolling bearing 15, A is tested
The retainer that rolling element, the B of rolling bearing 14 are tested the tested rolling bearing 14 of the rolling element of rolling bearing 15, A (is not drawn in figure
Out) and B be tested rolling bearing 15 retainer (being not drawn into figure)；The speed probe is used to monitor the angle of the mandrel 12
Speed；Data acquisition/processing/calculating/the display system is for acquiring, handling the core that the speed probe monitors
The angular velocity signal of axis 12 calculates A is tested rolling bearing 14 and B is tested rolling bearing 15 equivalent friction torque and equivalent friction
Coefficient, and show relevant information.
In the utility model, the rotary axis system is vertical layout, the axis of the inner cylinder face 11 of described two bearing blocks 9
Perpendicular to horizontal plane.
When carrying out equlvalent coefficient of friction measurement using the vertical rolling bearing equlvalent coefficient of friction measuring device of the utility model,
It is equipped with power device in 7 side of fuselage, the output shaft of the power device passes through an arrangement of clutch and the mandrel 12
Knot or separation, are provided with axial loading device in 8 side of slide unit.Above-mentioned power device, arrangement of clutch and axially loaded dress
It sets and belongs to general knowledge known in this field with the position of related components and connection relationship in the utility model measuring device, therefore simultaneously
Not drawn in the figure.
When carrying out equlvalent coefficient of friction measurement using the vertical rolling bearing equlvalent coefficient of friction measuring device of the utility model,
Measurement in pairs need to be carried out twice to two tested rolling bearings；Due to the influence of the gravity G of the mandrel of vertical layout, measurement process
In two tested rolling bearings carry the axial load that both direction differs in size on the contrary respectively；According in measurement process twice because
The equivalent friction power that generated different information parses two tested rolling bearings is exchanged in the position of two tested rolling bearings
Square and equlvalent coefficient of friction.
The working principle of the vertical rolling bearing equlvalent coefficient of friction measuring device of the utility model are as follows:
Firstly, the A inner ring for being tested rolling bearing 14 is installed at one end shaft shoulder 13 of mandrel 12, B is tested rolling bearing
15 inner ring is installed at the other end shaft shoulder 13 of mandrel 12；The outer ring for being tested rolling bearing 14 A is installed on and is connected with fuselage 7
Bearing block shoulder block 10 at, B be tested rolling bearing 15 outer ring be installed on slide unit 8 be connected bearing block shoulder block 10 at；
It is tested as defined in the outer ring application of rolling bearing 15 by slide unit 8, the bearing block 9 being connected with slide unit 7 to B in axial loading device
Axial load F1Under conditions of, power device drives mandrel 12 to turn round by arrangement of clutch, returns back to given return to mandrel 12
The output shaft and mandrel 12 of arrangement of clutch separation power device, the angular speed that speed probe monitors mandrel 12 are straight after tarnsition velocity
Stop turning round to mandrel 12；Data acquisition/processing/calculating/display system obtains " mandrel angular speed-time " numerical relation ω
(t), the movement velocity and kinetic energy of all movement parts on rotary axis system are calculated, " rotary axis system total kinetic energy-time " numerical value is obtained and closes
System；To " rotary axis system total kinetic energy-time " numerical relation derivation, " rotary axis system total kinetic energy-time " numerical relation is in certain a period of time
The attenuating rate that t is rotary axis system total kinetic energy to the derivative of time is carved, also under the angular velocity omega (t) corresponding to the moment
A is tested the sum of the friction horsepower that rolling bearing 14 and B is tested rolling bearing 15, to obtain, " A is tested rolling bearing and B is tested
The sum of friction horsepower of rolling bearing-angular speed " numerical relation P1(ω)。
Then, the A inner ring for being tested rolling bearing 14 is installed at one end shaft shoulder 13 of mandrel 12, B is tested rolling bearing
15 inner ring is installed at the other end shaft shoulder 2 13 of mandrel 12；The outer ring for being tested rolling bearing 14 A is installed on and is consolidated with slide unit 8
At the shoulder block 10 of bearing block even, the outer ring that B is tested rolling bearing 15 is installed on the shoulder block 10 for the bearing block being connected with fuselage 7
Place；Applied by slide unit 8, the bearing block 9 being connected with slide unit 7 to the outer ring that A is tested rolling bearing 14 in axial loading device and is advised
Fixed axial load F2Under conditions of, power device drives mandrel 12 to turn round by arrangement of clutch, returns back to mandrel 12 given
Revolution angular speed after arrangement of clutch separation power device output shaft and mandrel 12, speed probe monitor mandrel 12 angle speed
Degree is until mandrel 12 stops revolution；Data acquisition/processing/calculating/display system obtains " mandrel angular speed-time " numerical relation
ω (t) calculates the movement velocity and kinetic energy of all movement parts on rotary axis system, obtains " rotary axis system total kinetic energy-time " numerical value
Relationship；At a time t is rotary axis system total kinetic energy to the derivative of time to " rotary axis system total kinetic energy-time " numerical relation
Lower rate, is also tested rolling bearing 14 for A and B is tested under the angular velocity omega (t) corresponding to the moment of rolling bearing 15
The sum of friction horsepower, data acquisition/processing/calculating/display system, which calculates, obtains " the tested rolling bearing of B and the tested rolling bearing of A
The sum of friction horsepower-angular speed " numerical relation P2(ω)。
Tested friction horsepower of the rolling bearing under certain angular speed is equivalent to the sliding friction of corresponding virtual sliding bearing
Secondary friction horsepower；The quotient that the friction horsepower of sliding friction pair is obtained divided by the magnitude of angular velocity of tested rolling bearing is to slide to rub
The secondary moment of friction under the angular speed is wiped, equivalent friction torque of the tested rolling bearing under the angular speed is also equivalent to；It is sliding
Dynamic friction pair is in the moment of friction under the angular speed divided by the normal direction at the central radius R in the face of being slidably matched and the face 6 that is slidably matched
The quotient that the product of load obtains is coefficient of friction of the sliding friction pair under the angular speed, is also equivalent to tested rolling bearing and exists
Equlvalent coefficient of friction under the angular speed；Normal direction load at the face 6 that is slidably matched is equivalent to corresponding tested rolling bearing
Normal component of the axial load born at the face 6 that is slidably matched, the axis that numerical value is born for tested rolling bearing
The quotient obtained to load divided by the sine of tested rolling bearing contact angle α.
Finally, according to A is tested rolling bearing 14 under above-mentioned measuring condition twice and B is tested the frictional work of rolling bearing 15
The composition of the sum of rate, in measurement angular velocity range, for different angular velocity omegas1、ω2、ω3..., establish linear equation in two unknowns
Group:
In formula, the first item of equation left side of the equal sign is the friction horsepower that A is tested rolling bearing 14, and Section 2 is tested for B
The friction horsepower of rolling bearing 15, μA(ω)、μB(ω) is respectively " A is tested rolling bearing equlvalent coefficient of friction-angular speed " numerical value
Relationship and " B is tested rolling bearing equlvalent coefficient of friction-angular speed " numerical relation.
" A is tested rolling bearing equlvalent coefficient of friction-angular speed " number can be respectively obtained by solving above-mentioned linear equation in two unknowns group
Value relationship μA(ω) and " B is tested rolling bearing equlvalent coefficient of friction-angular speed " numerical relation μB(ω)；
Work as F1=F2When=F, " A is tested rolling bearing equlvalent coefficient of friction-angular speed " numerical relation and " B is tested the axis of rolling
Hold equlvalent coefficient of friction-angular speed " numerical relation are as follows:
According to the mechanical relationship of moment of friction and coefficient of friction, when A is tested rolling bearing 14 and tested 15 institute of rolling bearing of B
When the axial load of receiving is F, " A is tested rolling bearing equivalent friction torque-angular speed " numerical relation MA(ω) and " B is tested
Rolling bearing equivalent friction torque-angular speed " numerical relation MB(ω) are as follows:
When the angular speed of mandrel 12 goes to zero, corresponding equivalent friction torque and equlvalent coefficient of friction are respectively equivalent to
A is tested rolling bearing 14 and B is tested the starting equivalent friction torque and starting equlvalent coefficient of friction of rolling bearing 15.
It is measured using the vertical rolling bearing equlvalent coefficient of friction measuring device of the utility model, steps are as follows:
Step 1: the A inner ring for being tested rolling bearing 14 is installed at one end shaft shoulder 13 of mandrel 12, B is tested the axis of rolling
15 inner ring is held to be installed at the other end shaft shoulder 13 of mandrel 12；Mobile Slide 8 installs the outer ring for being tested rolling bearing 14 A
At the shoulder block 10 for the bearing block being connected with fuselage 7, the outer ring that B is tested rolling bearing 15 is installed on the bearing being connected with slide unit 8
At the shoulder block 10 of seat；
Step 2: according to the type and size of tested rolling bearing, by Frictional Moment for Rolling Bearings specifications of surveys such as China
People's republic's standard GB/T/T 32562-2016 " Frictional Moment for Rolling Bearings measurement method ", axial loading device passes through
Slide unit 8, the bearing block 9 being connected with slide unit 8 apply defined axial load to the outer ring that B is tested rolling bearing 15；
Step 3: power device drives mandrel 12 to turn round by arrangement of clutch, mandrel 12, A are tested the interior of rolling bearing 14
The inner ring that circle and B are tested rolling bearing 15 keeps synchronous revolving；Data acquisition/processing/calculating/display system acquisition, processing come
From the angular velocity signal of the mandrel 12 of speed probe, the angular speed of mandrel 12 is calculated, and shows relevant information；
Step 4: the rotational speed of mandrel 12 is gradually increased to given value and stable operation, arrangement of clutch separates power dress
The rotational speed of the output shaft and mandrel 12 set, mandrel 12 is tested rolling bearing 14 in A and B is tested the frictional work of rolling bearing 15
Gradually until mandrel 12 stops revolution, data acquisition/processing/calculating/display system obtains " mandrel angle speed for decaying under consumption effect
Degree-time " numerical relation ω (t)；
Step 5: data acquisition/processing/calculating/display system calculates the movement velocity of all movement parts on rotary axis system
And kinetic energy, obtain " rotary axis system total kinetic energy-time " numerical relation；To " rotary axis system total kinetic energy-time " numerical relation derivation,
" rotary axis system total kinetic energy-time " numerical relation at a time t be to the derivative of time rotary axis system total kinetic energy attenuating
Rate, also for A under the angular speed corresponding to the moment be tested rolling bearing 14 and B be tested rolling bearing 15 friction horsepower it
With " A is tested rolling bearing and B is tested the sum of friction horsepower of rolling bearing-angular speed " numerical relation P to obtain1(ω)；
Step 6: the A inner ring for being tested rolling bearing 14 is installed at one end shaft shoulder 13 of mandrel 12, B is tested the axis of rolling
15 inner ring is held to be installed at the other end shaft shoulder 13 of mandrel 12；Mobile Slide 8 installs the outer ring for being tested rolling bearing 15 B
At the shoulder block 10 for the bearing block being connected with fuselage 7, the outer ring that A is tested rolling bearing 14 is installed on the bearing being connected with slide unit 8
At the shoulder block 10 of seat；
Step 7: according to the type and size of tested rolling bearing, by Frictional Moment for Rolling Bearings specifications of surveys such as China
People's republic's standard GB/T/T 32562-2016 " Frictional Moment for Rolling Bearings measurement method ", axial loading device passes through
Slide unit 8, the bearing block 9 being connected with slide unit 8 apply defined axial load to the outer ring that A is tested rolling bearing 14；
Step 8: repeating Step 3: step 4 and step 5, data acquisition/processing/calculating/display system, which calculates, to be obtained
" mandrel angular speed-time " numerical relation ω (t), " rotary axis system total kinetic energy-time " numerical relation, " A be tested rolling bearing with
B is tested the sum of friction horsepower of rolling bearing-angular speed " numerical relation P2(ω)；
Step 9: the quotient that the friction horsepower of tested rolling bearing is obtained divided by the revolution magnitude of angular velocity of tested rolling bearing is i.e.
To be tested equivalent friction torque of the rolling bearing under the angular speed, be tested the equivalent friction torque of rolling bearing divided by with it is tested
The central radius R in the face that is slidably matched of the corresponding virtual sliding bearing of rolling bearing and the normal direction load at the face 6 that is slidably matched
The quotient that product obtains is tested equlvalent coefficient of friction of the rolling bearing under the angular speed；Method at the face 6 that is slidably matched
It is equivalent to the normal component of axial load that corresponding tested rolling bearing is born at the face 6 that is slidably matched to load,
The quotient that its numerical value obtains for the axial load that tested rolling bearing is born divided by the sine of tested rolling bearing contact angle α；Root
According under above-mentioned measuring condition twice A be tested the composition that rolling bearing 14 and B is tested the sum of friction horsepower of rolling bearing 15,
It measures in angular velocity range, for different angular velocity omegas1、ω2、ω3..., establish linear equation in two unknowns group:
In formula, the first item of equation left side of the equal sign is the friction horsepower that A is tested rolling bearing 14, and Section 2 is tested for B
The friction horsepower of rolling bearing 15, μA(ω)、μB(ω) is respectively equlvalent coefficient of friction-angular speed that A is tested rolling bearing 14
Numerical relation and B are tested equlvalent coefficient of friction-angular speed numerical relation of rolling bearing 15；
Equlvalent coefficient of friction-angular speed that A is tested rolling bearing 14 can be respectively obtained by solving above-mentioned linear equation in two unknowns group
Numerical relation μA(ω) and B are tested equlvalent coefficient of friction-angular speed numerical relation μ of rolling bearing 15B(ω)；
According to the mechanical relationship of moment of friction and coefficient of friction, when A is tested rolling bearing 14 and tested 15 institute of rolling bearing of B
When the axial load of receiving is F, A is tested equivalent friction torque-angular speed numerical relation M of rolling bearing 14A(ω) and B quilt
Survey equivalent friction torque-angular speed numerical relation M of rolling bearing 15B(ω) are as follows:
When the angular speed of mandrel 12 goes to zero, corresponding equivalent friction torque and equlvalent coefficient of friction are respectively equivalent to
A is tested rolling bearing 14 and B is tested the starting equivalent friction torque and starting equlvalent coefficient of friction of rolling bearing 15.
Claims (2)
1. a kind of vertical rolling bearing equlvalent coefficient of friction measuring device, which is characterized in that including fuselage (7), slide unit (8), core
Axis (12), two bearing blocks (9), speed probe and data acquisition/processing/calculating/display system；
Described two bearing blocks (9), one of bearing block and the fuselage (7) are connected, another bearing block and the slide unit
(8) it is connected；Described two bearing blocks (9) are respectively provided with installation A tested rolling bearing (14) and B is tested rolling bearing (15)
Outer ring shoulder block (10) and inner cylinder face (11)；The both ends of the mandrel (12) are respectively provided with installation A and are tested the axis of rolling
Hold the shaft shoulder (13) of (14) and the inner ring of B tested rolling bearing (15)；The inner cylinder face (11) of described two bearing blocks (9) is same
Axis；Axial translation of the slide unit (8) in the inner cylinder face (11) of the outer described two bearing blocks of power drive lower edge (9)；
The speed probe is used to monitor the angular speed of the mandrel (12)；Data acquisition/processing/calculating/display the system
It is tested that A is calculated and be shown in the angular velocity signal united for acquiring, handling the mandrel (12) that the speed probe monitors
Rolling bearing (14) and B are tested the equivalent friction torque and equlvalent coefficient of friction of rolling bearing (15).
2. vertical rolling bearing equlvalent coefficient of friction measuring device according to claim 1, which is characterized in that described two axis
Holding seat (9) is vertical layout, and the axis of the inner cylinder face (11) of described two bearing blocks (9) is perpendicular to horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821777830.5U CN208999099U (en) | 2018-10-31 | 2018-10-31 | Vertical rolling bearing equlvalent coefficient of friction measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821777830.5U CN208999099U (en) | 2018-10-31 | 2018-10-31 | Vertical rolling bearing equlvalent coefficient of friction measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208999099U true CN208999099U (en) | 2019-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821777830.5U Expired - Fee Related CN208999099U (en) | 2018-10-31 | 2018-10-31 | Vertical rolling bearing equlvalent coefficient of friction measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109238707A (en) * | 2018-10-31 | 2019-01-18 | 天津大学 | Vertical rolling bearing equlvalent coefficient of friction measuring device and method |
| WO2020088431A1 (en) * | 2018-10-31 | 2020-05-07 | 天津大学 | Device for measuring equivalent friction coefficient of rolling bearing |
-
2018
- 2018-10-31 CN CN201821777830.5U patent/CN208999099U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109238707A (en) * | 2018-10-31 | 2019-01-18 | 天津大学 | Vertical rolling bearing equlvalent coefficient of friction measuring device and method |
| WO2020088431A1 (en) * | 2018-10-31 | 2020-05-07 | 天津大学 | Device for measuring equivalent friction coefficient of rolling bearing |
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