CN108036943A - The rolling bearing fatigue life experimental rig of radially alternating load can be applied - Google Patents
The rolling bearing fatigue life experimental rig of radially alternating load can be applied Download PDFInfo
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- CN108036943A CN108036943A CN201711457113.4A CN201711457113A CN108036943A CN 108036943 A CN108036943 A CN 108036943A CN 201711457113 A CN201711457113 A CN 201711457113A CN 108036943 A CN108036943 A CN 108036943A
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- rolling bearing
- fixture
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- alternating load
- radially alternating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The present invention relates to a kind of rolling bearing fatigue life experimental rig for applying radially alternating load, the device controls the rotation of driving motor by computer, rolling bearing is driven with given rotation speed operation, in radially alternating load loading unit, the stretching/compressing amount of spring is influenced by linear motor displacement, due to the change of the stretching/compressing amount of spring, spring can apply of different sizes on floating holder surface, the active force of direction-agile, the loading of the radially alternating load of bearing can be realized by adding multiple radially alternating load loading units in floating holder different zones, torquemeter and temperature sensor can be used for detecting the performance in rolling bearing operation process.Compared with prior art, the present invention can realize the loading of the radially alternating load of rolling bearing, and with reference to the real working condition condition of internal combustion engine, development rolling bearing fatigue life test, is not only simple in structure, saves space, and controls more accurate, direct.
Description
Technical field
The invention belongs to engine rolling bearing life to test field, is related to a kind of rolling for applying radially alternating load
Bearing fatigue life test device.
Background technology
Internal combustion engine is widely used in automobile, ship, aircraft, tank, railway locomotive, agricultural machinery, engineering machinery, power generation
Multiple industries such as unit, it occupies very important status as power-equipment in national economy.Include work in internal combustion engine
Plug-cylinder sleeve, piston ring-cylinder liner, bent axle-bearing and cam-tappet etc. are several to important friction pair, wherein, crankshaft bearing, including
Base bearing and the connecting-rod bearing (since the size and Orientation of such bearing working load all changes over time, are thus generically referred to as moving
Load bearings), it is one of the most key friction pair of internal combustion engine, it not only influences the reliability of internal combustion engine and tired longevity
Life, also affects the potentiality that internal combustion engine is further strengthened.
At present, car engine main bearing, camshaft bearing and connecting rod bottom-end bearing are few mainly using sliding bearing
The camshaft bearing of number engine employs rolling bearing.According to tribology theory, rolling friction is damaged than the energy of sliding friction
Small an order of magnitude or so is wanted in mistake.Therefore, under identical working condition, the friction loss of rolling bearing is much smaller than sliding axle
Hold, thus bearing element chemical conversion is for an important trial of engine antifriction consumption reduction.
The fatigue life of rolling bearing and its reliability are the most important performance indicators of rolling bearing, but tired due to influencing
Labor factors of limit life is too many and bearing fatigue life theory still needs to perfect, and it is currently the only effective way to carry out life test.Axis
It is essential and basic important verification process in design bearing and manufacturing process to hold experiment.The loading load of test bearing is as axis
The important parameter of testing machine test is held, its accuracy directly affects the result of the test of bearing.Rolling bearing experiment traditional at present
Device loading characteristic is single, it is impossible to realize the loading of more varying loads, and dynamic load rolling bearing is often in alternation in true internal combustion engine
Load, therefore traditional rolling bearing experimental rig is difficult the experiment for carrying out engine dynamic load rolling bearing fatigue life.
The content of the invention
Radially handed over it is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide one kind can apply
The rolling bearing fatigue life experimental rig of varying load.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of rolling bearing fatigue life experimental rig for applying radially alternating load, for measuring rolling bearing in footpath
Fatigue life under to alternate load effect, the rolling bearing are distributed in inner ring by outer ring, inner ring and by retainer
Multiple rolling elements composition between outer ring, the device include,
Workbench,
Motor is driven, is connected on workbench,
Rotation axis, is sequentially connected with driving motor, and the rotation axis is equipped with torquemeter,
Stationary fixture A and stationary fixture B, is connected on workbench, and one is clamped in each stationary fixture and accompanies examination to roll
Bearing,
Floating holder, between stationary fixture A and stationary fixture B, divides fixture and lower activity point by opposed upper activity
Fixture forms, and is clamped with least one subject rolling bearing in the floating holder, the subject rolling bearing and accompanies examination
Rolling bearing is coaxially disposed, and is arranged on the rotary shaft,
Temperature sensor, is arranged in floating holder, and is contacted with subject rolling bearing,
Radially alternating load loading unit, is made of, each charging assembly four charging assemblies acted on floating holder
It is made of the linear motor, load loading spring and connector that are sequentially connected successively, the connector is connected with floating holder,
The load loading spring of four charging assemblies is in " ten " set up of character patt ern, and the telescopic direction of each load loading spring is in rotation axis
In the radial direction, the linear motor is made of track and the thrust coil being sequentially connected with track, the thrust
Coil is fixed on workbench, and one end of track is connected with load loading spring, and the length direction of track adds with load
It is consistent to carry telescopic spring direction.
Preferably, two subject rolling bearings are clamped with the floating holder.
Preferably, the upper activity divides the bottom of fixture to be equipped with upper arc groove, and the lower activity divides the top of fixture
Equipped with lower arcuate slot, upper arc groove and lower arcuate slot match somebody with somebody the clamping part for being combined into and matching with rolling bearing, and the radial direction is handed over
Varying load loading unit is made of upper charging assembly, lower charging assembly, left charging assembly and right charging assembly, the upper loading
Component is arranged on activity and divides the top of fixture and act on the top that activity divides fixture, and the lower charging assembly is arranged on
Lower activity divides the lower section of fixture and acts on the bottom that lower activity divides fixture, and the left charging assembly is arranged on floating holder
Left side simultaneously acts on the junction that activity divides fixture and lower activity divides fixture, and the right charging assembly is arranged on floating holder
Right side and act on the junction that activity divides fixture and lower activity divides fixture.
Preferably, the temperature sensor is arranged in arc groove or lower arcuate slot, and with the outer ring of rolling bearing
Contact.
Preferably, the rotation axis is sequentially connected by shaft coupling and driving motor.
Preferably, which further includes connects with driving motor, temperature sensor, torquemeter and electric rotating machine communication respectively
The controller connect.
Preferably, which further includes for providing the confession oil machine of lubricating oil to accompany examination rolling bearing and being tested rolling bearing
Structure, the oil supply mechanism are connected with controller communication.
The present invention operation principle be：
The rotation of computer (controller) control driving motor, drives rolling bearing with given rotation speed operation.Radially
In alternate load loading unit, the change of linear motor displacement is controlled by computer, and linear motor displacement changes
The stretching/compressing amount of spring can be influenced by becoming.Due to the change of the stretching/compressing amount of spring, spring can be in floating holder
Surface applies of different sizes, direction-agile active force.By adding multiple radially alternating load in floating holder different zones
Loading unit can realize the loading of journal bearing alternate load.Computer controls rolling bearing operation process by oil supply mechanism
In oil mass supply, torquemeter and temperature sensor can be used for detecting the performance in rolling bearing operation process.
Compared with prior art, the invention has the advantages that：
(1) displacement of linear motor is controlled by computer, and then changes compression/amount of tension of spring, controls spring
Elastic force, it is possible to achieve the loading of the radially alternating load of bearing.
(2) the real working condition condition of internal combustion engine is combined, the displacement and the change of time of linear motor are controlled by computer
Amount, it is possible to achieve the loading of internal combustion engine real working condition load.Contribute to carry out the engine dynamic load axis of rolling using the experimental rig
Hold fatigue life test.
(3) linear motor directly controls the flexible of load loading spring, is not only simple in structure, and saves space, and control
It is more accurate, direct.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the schematic diagram of the radially alternating load loading unit of the present invention.
In figure, 1 is computer, and 2 be driving motor, and 3 be shaft coupling, and 4 be torquemeter, and 5 be stationary fixture A, and 6 be for oil machine
Structure, 7 be radially alternating load loading unit, and 8 be floating holder, and 81 divide fixture for upper activity, and 82 divide fixture for lower activity, and 9 are
Stationary fixture B, 10 be rotation axis, and 11 is accompany examination rolling bearing B, and 12 be subject rolling bearing B, and 13 be subject rolling bearing A, 14
To accompany examination rolling bearing A, 15 be workbench, and 16 be temperature sensor, and 17 be track, and 18 be thrust coil, and 19 add for load
Spring is carried, 20 be connector.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment 1
A kind of rolling bearing fatigue life experimental rig for applying radially alternating load, as shown in Fig. 1~2, for surveying
Determine fatigue life of the rolling bearing under the effect of radially alternating load, rolling bearing is by outer ring, inner ring and passes through retainer point
The multiple rolling elements composition being distributed between inner ring and outer ring, the device include,
Workbench 15,
Motor 2 is driven, is connected on workbench 15,
Rotation axis 10, is sequentially connected with driving motor 2, is sequentially connected, rotates preferably by shaft coupling 3 and driving motor 2
Axis 10 is equipped with torquemeter 4,
Stationary fixture A5 and stationary fixture B9, is connected on workbench 15, is clamped with stationary fixture A5 and accompanies examination to roll
It is clamped with bearing A14, stationary fixture B9 and accompanies examination rolling bearing B11, accompanies examination rolling bearing A 14 with accompanying examination rolling bearing B 11
Play the role of supporting rotation axis 10,
Floating holder 8, between stationary fixture A5 and stationary fixture B9, divides fixture 81 He by upper activity opposed up and down
Lower activity divides fixture 82 to form, and at least one subject rolling bearing is clamped with floating holder 8, two are clamped with the present embodiment
Rolling bearing is tested, is respectively tested rolling bearing A13 and subject rolling bearing B12, rolling bearing is tested and accompanies the examination axis of rolling
Hold and be coaxially disposed, and be set in rotation axis 10,
Temperature sensor 16, is arranged in floating holder 8, and is contacted with subject rolling bearing,
Radially alternating load loading unit 7, is made of four charging assemblies acted on floating holder 8, each loading group
Part is made of the linear motor, load loading spring 19 and connector 20 being sequentially connected successively, and connector 20 connects with floating holder 8
Connect, the load loading spring 19 of four charging assemblies is in " ten " set up of character patt ern, and the telescopic direction of each load loading spring 19 is equal
In rotation axis 10 in the radial direction, linear motor is made of track 17 and the thrust coil 18 being sequentially connected with track 17,
Thrust coil 18 is fixed on workbench 15, and one end of track 17 is connected with load loading spring 19, and the length of track 17
It is consistent with 19 telescopic direction of load loading spring to spend direction.
The upper activity of the present embodiment divides the bottom of fixture 81 to be equipped with upper arc groove, and lower activity divides the top of fixture 82 to be equipped with down
Arc groove, upper arc groove and lower arcuate slot match somebody with somebody the clamping part for being combined into and matching with rolling bearing, and temperature sensor 16 is arranged on
In upper arc groove or lower arcuate slot, and contacted with the outer ring of rolling bearing.Radially alternating load loading unit 7 is by upper loading group
Part, lower charging assembly, left charging assembly and right charging assembly are formed, and upper charging assembly is arranged on the top that activity divides fixture 81
And the top that activity divides fixture 81 is acted on, lower charging assembly is arranged on lower activity and divides the lower section of fixture 82 and act on lower work
The dynamic bottom for dividing fixture 82, left charging assembly, which is arranged on the left side of floating holder 8 and acts on activity, divides fixture 81 and lower work
The dynamic junction for dividing fixture 82, right charging assembly, which is arranged on the right side of floating holder 8 and acts on activity, divides fixture 81 with
Activity divides the junction of fixture 82.
The device further includes to be connected with driving motor 2, temperature sensor 16, torquemeter 4 and the communication of each electric rotating machine respectively
The controller connect, controller can use computer 1, and temperature sensor 16 and torquemeter 4 can gather rolling bearing and operate
Signal in journey, monitors the operational situation of rolling bearing, which, which also includes, is used for respectively to accompany examination rolling bearing and subject to roll
Bearing provides the oil supply mechanism 6 of lubricating oil, and oil supply mechanism 6 is connected with controller communication, realizes the fuel feeding to rolling bearing.
The rotation of computer (controller) control driving motor, drives rolling bearing with given rotation speed operation.Radially
In alternate load loading unit, the change of linear motor displacement is controlled by computer, and linear motor displacement changes
The stretching/compressing amount of spring can be influenced by becoming.Due to the change of the stretching/compressing amount of spring, spring can be in floating holder
Surface applies of different sizes, direction-agile active force.By adding multiple radially alternating load in floating holder different zones
Loading unit can realize the loading of journal bearing alternate load.Computer controls rolling bearing operation process by oil supply mechanism
In oil mass supply, torquemeter and temperature sensor can be used for detecting the performance in rolling bearing operation process.
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using invention.It is ripe
Knowing the personnel of art technology obviously easily can make these embodiments various modifications, and described herein general former
It ought to use in other embodiment without by performing creative labour.Therefore, the invention is not restricted to above-described embodiment, this area
Technical staff discloses according to the present invention, does not depart from improvement that scope made and modification all should be in the guarantor of the present invention
Within the scope of shield.
Claims (7)
- A kind of 1. rolling bearing fatigue life experimental rig for applying radially alternating load, for measuring rolling bearing radially Fatigue life under alternate load effect, the rolling bearing by outer ring, inner ring and by retainer be distributed in inner ring and Multiple rolling elements composition between outer ring, it is characterised in that the device includes,Workbench (15),Motor (2) is driven, is connected on workbench (15),Rotation axis (10), is sequentially connected with driving motor (2), and the rotation axis (10) is equipped with torquemeter (4),Stationary fixture A (5) and stationary fixture B (9), is connected on workbench (15), and one is clamped in each stationary fixture and is accompanied Try rolling bearing,Floating holder (8), between stationary fixture A (5) and stationary fixture B (9), by opposed upper activity divide fixture (81) and Lower activity divides fixture (82) to form, and at least one subject rolling bearing, the subject are clamped with the floating holder (8) Rolling bearing and accompany examination rolling bearing to be coaxially disposed, and be set in rotation axis (10),Temperature sensor (16), is arranged in floating holder (8), and is contacted with subject rolling bearing,Radially alternating load loading unit (7), is made of, each loading group four charging assemblies acted on floating holder (8) Part is made of the linear motor, load loading spring (19) and connector (20) being sequentially connected successively, the connector (20) It is connected with floating holder (8), the load loading spring (19) of four charging assemblies is in " ten " set up of character patt ern, and each load loads bullet In rotation axis (10) in the radial direction, the linear motor is by track (17) and and track for the telescopic direction of spring (19) (17) thrust coil (18) composition being sequentially connected, the thrust coil (18) are fixed on workbench (15), track (17) one end is connected with load loading spring (19), and the length direction of track (17) and load loading spring (19) are flexible Direction is consistent.
- 2. the rolling bearing fatigue life experimental rig according to claim 1 for applying radially alternating load, its feature It is, two subject rolling bearings is clamped with the floating holder (8).
- 3. the rolling bearing fatigue life experimental rig according to claim 1 for applying radially alternating load, its feature It is, the upper activity divides the bottom of fixture (81) to be equipped with upper arc groove, and the lower activity, which divides at the top of fixture (82), to be set There is lower arcuate slot, upper arc groove and lower arcuate slot match somebody with somebody the clamping part for being combined into and matching with rolling bearing, and described is radially alternating Load loading unit (7) is made of upper charging assembly, lower charging assembly, left charging assembly and right charging assembly, it is described upper plus Load component is arranged on activity and divides the top of fixture (81) and act on the top that activity divides fixture (81), the lower loading Component is arranged on lower activity and divides the lower section of fixture (82) and act on the bottom that lower activity divides fixture (82), the left loading group Part is arranged on the left side of floating holder (8) and acts on the junction that activity divides fixture (81) and lower activity divides fixture (82), The right charging assembly, which is arranged on the right side of floating holder (8) and acts on activity, divides fixture (81) and lower activity to divide fixture (82) junction.
- 4. the rolling bearing fatigue life experimental rig according to claim 3 for applying radially alternating load, its feature It is, the temperature sensor (16) is arranged in arc groove or lower arcuate slot, and is contacted with the outer ring of rolling bearing.
- 5. the rolling bearing fatigue life experimental rig according to claim 1 for applying radially alternating load, its feature It is, the rotation axis (10) is sequentially connected by shaft coupling (3) and driving motor (2).
- 6. the rolling bearing fatigue life experimental rig according to claim 1 for applying radially alternating load, its feature It is, which further includes logical with driving motor (2), temperature sensor (16), torquemeter (4) and electric rotating machine (17) respectively Interrogate the controller of connection.
- 7. the rolling bearing fatigue life experimental rig according to claim 6 for applying radially alternating load, its feature It is, which further includes for providing the oil supply mechanism (6) of lubricating oil to accompany examination rolling bearing and being tested rolling bearing, described Oil supply mechanism (6) be connected with controller communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711457113.4A CN108036943A (en) | 2017-12-28 | 2017-12-28 | The rolling bearing fatigue life experimental rig of radially alternating load can be applied |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711457113.4A CN108036943A (en) | 2017-12-28 | 2017-12-28 | The rolling bearing fatigue life experimental rig of radially alternating load can be applied |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108036943A true CN108036943A (en) | 2018-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711457113.4A Withdrawn CN108036943A (en) | 2017-12-28 | 2017-12-28 | The rolling bearing fatigue life experimental rig of radially alternating load can be applied |
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| CN (1) | CN108036943A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031220A (en) * | 2019-03-21 | 2019-07-19 | 佛山衡生医疗自动化有限公司 | A kind of multifunction bearing test machine radial loading device |
-
2017
- 2017-12-28 CN CN201711457113.4A patent/CN108036943A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031220A (en) * | 2019-03-21 | 2019-07-19 | 佛山衡生医疗自动化有限公司 | A kind of multifunction bearing test machine radial loading device |
| CN110031220B (en) * | 2019-03-21 | 2024-05-03 | 烟台大学 | Radial loading device of multifunctional bearing testing machine |
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Application publication date: 20180515 |
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