CN207866521U - The rolling bearing fatigue life that rack pinion loads alternating load tests system - Google Patents
The rolling bearing fatigue life that rack pinion loads alternating load tests system Download PDFInfo
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- CN207866521U CN207866521U CN201721876915.4U CN201721876915U CN207866521U CN 207866521 U CN207866521 U CN 207866521U CN 201721876915 U CN201721876915 U CN 201721876915U CN 207866521 U CN207866521 U CN 207866521U
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Abstract
The rolling bearing fatigue life that alternating load is loaded the utility model is related to a kind of rack pinion tests system, the system controls the rotation of driving motor by computer, drive rolling bearing with given rotation speed operation, in rack pinion alternating load loading unit, the rotary motion of electric rotating machine is converted into linear motion by rack and pinion drive mechanism, it can influence the stretching/compressing amount of spring, 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, by adding the load that bearing alternating load may be implemented in multiple rack pinion alternating load loading units in floating holder different zones, torquemeter and temperature sensor are used for detecting the performance in rolling bearing operation process.Compared with prior art, the utility model can accurately realize the load of rolling bearing alternating load, in conjunction with the real working condition condition of internal combustion engine, carry out rolling bearing fatigue life test.
Description
Technical field
The utility model belongs to engine rolling bearing life testing field, is related to a kind of rack pinion load alternation
The rolling bearing fatigue life of load tests system.
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, play a very important role 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 the most key one of the 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.
Currently, car engine main bearing, camshaft bearing and connecting rod bottom-end bearing are mainly using sliding bearing, it is few
The camshaft bearing of number engine uses 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
It holds, thus the important trial that bearing element chemical conversion lowers consumption for engine antifriction.
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 load load of test bearing is as axis
The important parameter of testing machine test is held, accuracy directly affects the test result of bearing.Rolling bearing experiment traditional at present
System loads characteristic is single, can not achieve the load of changeable load, and dynamic load rolling bearing is often in alternation in true internal combustion engine
Load, therefore traditional rolling bearing pilot system is difficult to carry out the experiment of engine dynamic load rolling bearing fatigue life.
Invention content
The purpose of this utility model is exactly to provide a kind of rack-and-pinion to overcome the problems of the above-mentioned prior art
The rolling bearing fatigue life of transmission load alternating load tests system.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of rolling bearing fatigue life test system of rack pinion load alternating load, for measuring the axis of rolling
It holds the fatigue life under alternate load effect, the rolling bearing is distributed in interior by outer ring, inner ring and by retainer
Enclose multiple rolling elements composition between outer ring, which includes,
Workbench,
Driving motor is connected on workbench,
Rotary shaft is sequentially connected with driving motor, and the rotary shaft is equipped with torquemeter,
Two stationary fixtures, are connected on workbench, and one is clamped in each stationary fixture and accompanies examination rolling bearing,
Floating holder is located between two stationary fixtures, divides fixture to form by two opposed activities, the activity folder
It is clamped at least one subject rolling bearing in tool, the subject rolling bearing and accompanies examination rolling bearing coaxial arrangement, and
It is arranged on the rotary shaft,
Temperature sensor is arranged in floating holder, and is contacted with subject rolling bearing,
Rack pinion alternating load loading unit is respectively acting on the charging assembly that each activity divides on fixture by two
Composition, each charging assembly is by the electric rotating machine, rack and pinion drive mechanism, load loading spring and the connector that are sequentially connected successively
Composition, the connector divides fixture to connect with activity, and the load loading springs of two charging assemblies is in line-styled to installing
Set, the telescopic direction of each load loading spring on direction radially of the axis of rotation, the rack and pinion drive mechanism by
Worm screw, gear and rack composition, the rack being sequentially connected successively exist with the rack sliding seat being arranged on workbench
It is slidably connected on rack length direction and rack length direction is consistent with load loading spring telescopic direction, one end of rack is logical
It crosses rack connecting plate to connect with load loading spring, the worm screw is sequentially connected with electric rotating machine.
Preferably, the worm screw forms self locking type worm gear-worm structure with gear.
Preferably, the axis of the worm screw and the length direction of rack are parallel, and worm screw and rack separation gear two
Side.
Preferably, two subject rolling bearings are clamped in the floating holder.
Preferably, the floating holder divides fixture and lower activity that fixture is divided to constitute by upper activity opposite to each other up and down, described
Upper activity divide fixture bottom be equipped with upper arc groove, the lower activity divide fixture top be equipped with lower arcuate slot, upper arc
With the clamping part to match with rolling bearing is combined into, rack pinion alternating load load is single for slot and lower arcuate slot
Member is made of upper charging assembly and lower charging assembly, and the upper charging assembly is arranged divides the top of fixture and effect in upper activity
Divide the top of fixture in upper activity, the lower charging assembly, which is arranged, to be divided the lower section of fixture in lower activity and act on lower activity point
The bottom of fixture.
Preferably, the temperature sensor is arranged in upper arc groove or lower arcuate slot, and with the outer ring of rolling bearing
Contact.
Preferably, the rotary shaft is sequentially connected by shaft coupling and driving motor.
Preferably, which further includes communicating to connect respectively with driving motor, temperature sensor, torquemeter and electric rotating machine
The controller connect.
Preferably, the system further include for for accompany examination rolling bearing and be tested rolling bearing provide lubricating oil for oil machine
Structure, the oil supply mechanism are connect with controller communication.
The operation principle of the utility model is：
Computer controls the rotation of driving motor, drives rolling bearing with given rotation speed operation.In rack pinion
In alternating load loading unit, the rotation of electric rotating machine is controlled by computer, will be revolved by rack and pinion drive mechanism
The rotary motion of rotating motor is converted to linear motion, can influence the stretching/compressing amount of spring.Due to the stretching/compressing of spring
The change of amount, spring will can apply of different sizes, direction-agile active force on floating holder surface.By in floating holder
Different zones add the load that bearing alternating load may be implemented in multiple rack pinion alternating load loading units.Computer
The oil mass supply in rolling bearing operation process is controlled by oil supply mechanism, torquemeter and temperature sensor can be used for detecting rolling
Performance in dynamic bearing operation process.
Compared with prior art, the utility model has the advantages that：
(1) rotation angle of electric rotating machine is controlled by computer, and then changes compression/amount of tension of spring, controls bullet
Load of the rolling bearing in the alternating load of two relative directions (such as upper and lower directions) may be implemented in the elastic force of spring.
(2) the real working condition condition for combining internal combustion engine controls rotation angle and the time of electric rotating machine by computer
The load of internal combustion engine real working condition load may be implemented in variable quantity.Contribute to carry out the rolling of engine dynamic load using the test system
Dynamic bearing fatigue life test.
(3) transmission efficiency of rack-and-pinion transport mechanism, load load is accurate, is conducive to improve the accurate of load load
Property.
(4) worm screw is set creatively between electric rotating machine and gear, plays the role of deceleration torque, alleviates rotation
The burden of motor can select low power electric rotating machine.
(5) when worm screw and gear form self locking type worm gear-worm structure, the reaction force of load loading spring is avoided
Influence to load load further improves the accuracy of load load.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the schematic diagram of the rack pinion alternating load loading unit of the utility model.
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 is for oil machines
Structure, 7 be rack pinion alternating load loading unit, and 8 be floating holder, and 81 divide fixture for upper activity, and 82 be lower activity point
Fixture, 9 be stationary fixture B, and 10 be rotary shaft, and 11 is accompany examination rolling bearing B, and 12 roll for subject rolling bearing B, 13 for subject
Bearing A, 14 is accompany examination rolling bearing A, and 15 be workbench, and 16 be temperature sensor, and 17 be electric rotating machine A, and 181 be worm screw A,
182 be gear A, and 183 be rack A, and 184 be rack sliding seat A, and 185 be rack connecting plate A, and 19 be load loading spring A, 20
For connector A, 21 be connector B, and 22 be load loading spring B, and 231 be worm screw B, and 232 be gear B, and 233 be rack B, 234
It is rack connecting plate B for rack sliding seat B, 235,24 be electric rotating machine B.
Specific implementation mode
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
Embodiment 1
A kind of rolling bearing fatigue life test system of rack pinion load alternating load, as shown in Fig. 1~2,
For measuring fatigue life of the rolling bearing under alternate load effect, rolling bearing is by outer ring, inner ring and passes through retainer
The multiple rolling elements composition being distributed between inner ring and outer ring, which includes,
Workbench 15,
Driving motor 2 is connected on workbench 15,
Rotary shaft 10 is sequentially connected with driving motor 2, is sequentially connected preferably by shaft coupling 3 and driving motor 2, rotation
Axis 10 is equipped with torquemeter 4,
Two stationary fixtures --- stationary fixture A5 and stationary fixture B9, is connected on workbench 15, stationary fixture A5
Inside be clamped with and accompany examination rolling bearing A14, be clamped in stationary fixture B9 and accompany examination rolling bearing B11, accompany examination rolling bearing A 14 with
Examination rolling bearing B 11 is accompanied to play the role of supporting rotary shaft 10.
Floating holder 8 does not contact between stationary fixture A5 and stationary fixture B9, and with the two, by opposed upper
Activity divides fixture A81 and lower activity that fixture B82 is divided to form, and at least one subject rolling bearing, this reality are clamped in floating holder 8
It applies clamping in example and is respectively tested rolling bearing A13 and subject rolling bearing B12, each subject rolling there are two rolling bearing is tested
Dynamic bearing and examination rolling bearing coaxial arrangement is accompanied, and is set in rotary shaft 10,
Temperature sensor 16, setting contact in floating holder 8, and with each subject rolling bearing,
Rack pinion alternating load loading unit 7 is respectively acting on the load group that each activity divides on fixture by two
Part forms, and each charging assembly is by the electric rotating machine, rack and pinion drive mechanism, load loading spring and the connection that are sequentially connected successively
Device forms, and connector divides fixture to connect with activity, and the load loading spring of two charging assemblies is opposite disposed in line-styled, often
The telescopic direction of a load loading spring is on direction radially of the axis of rotation, and rack and pinion drive mechanism by being sequentially connected successively
Worm screw, gear and rack composition, rack and the rack sliding seat that is arranged on workbench 15 are sliding on rack length direction
It moves connection and rack length direction is consistent with load loading spring telescopic direction, one end of rack passes through rack connecting plate and carries
Lotus loading spring connects, and worm screw is sequentially connected with electric rotating machine.
In the present embodiment, floating holder divides fixture and lower activity that fixture is divided to constitute by upper activity opposite to each other up and down, upper activity
The bottom of fixture is divided to be equipped with upper arc groove, lower activity divides the top of fixture to be equipped with lower arcuate slot, and upper arc groove and lower arcuate slot are matched
Be combined into the clamping part to match with rolling bearing, temperature sensor 16 is arranged in upper arc groove or lower arcuate slot, and with rolling
The outer ring of dynamic bearing contacts.Rack pinion alternating load loading unit 7 is made of upper charging assembly and lower charging assembly, on
Charging assembly, which is arranged, to be divided the top of fixture 81 in upper activity and acts on the top that upper activity divides fixture 81, by being sequentially connected successively
Electric rotating machine A17, rack and pinion drive mechanism A, load loading spring A19 and connector A20 composition, rack pinion machine
Structure A is made of worm screw A181, gear A 182 and the rack A183 being sequentially connected successively, and rack A183 is with setting in workbench 15
On rack sliding seat A184 be slidably connected on rack A183 length directions, the bottom end of rack A183 passes through rack connecting plate
A185 is connect with load loading spring A19, and worm screw A181 is sequentially connected with electric rotating machine A17.Lower charging assembly is arranged in lower work
It is dynamic to divide the lower section of fixture 82 and act on the bottom that lower activity divides fixture 82, by electric rotating machine B24, the gear being sequentially connected successively
Rack gear B, load loading spring B22 and connector B21 compositions, rack and pinion drive mechanism B by being sequentially connected successively
Worm screw B231, gear B 232 and rack B233 composition, rack B233 and the rack sliding seat being arranged on workbench 15
B234 is slidably connected on rack B233 length directions, and the top of rack B233 loads bullet by rack connecting plate B235 and load
Spring B22 connections, worm screw B231 are sequentially connected with electric rotating machine B24.Worm screw in the present embodiment forms self locking type worm gear with gear
Worm structure.The axis of worm screw is parallel with the length direction of rack, and worm screw and rack separation gear both sides.
Convert rotational motion is linear motion by rack and pinion drive mechanism A by electric rotating machine A 17, and control load adds
It carrying spring A19 and stretching/compressing deformation occurs, load loading spring A19 is connected by connecting connector A 20 with floating holder 8,
Apply loading force；Similar, convert rotational motion is linear motion, control by rack and pinion drive mechanism B by electric rotating machine B24
Stretching/compressing deformation occurs for load loading spring B22 processed, and load loading spring B22 passes through connector B21 and 8 phase of floating holder
Even, apply loading force.
The system further includes communicating to connect respectively with driving motor 2, temperature sensor 16, torquemeter 4 and each electric rotating machine
Computer 1 may be used in the controller connect, controller, and temperature sensor 16 and torquemeter 4 can acquire rolling bearing and operate
Signal in journey monitors the operational situation of rolling bearing, which also includes for being that examination rolling bearing and subject is respectively accompanied to roll
Bearing provides the oil supply mechanism 6 of lubricating oil, and oil supply mechanism 6 is connect with controller communication, realizes the fuel feeding to rolling bearing.
Computer controls the rotation of driving motor, drives rolling bearing with given rotation speed operation.In rack pinion
In alternating load loading unit, the rotation of electric rotating machine is controlled by computer, will be revolved by rack and pinion drive mechanism
The rotary motion of rotating motor is converted to linear motion, can influence the stretching/compressing amount of spring.Due to the stretching/compressing of spring
The change of amount, spring will can apply of different sizes, direction-agile active force on floating holder surface.By in floating holder
Different zones add the load that bearing alternating load may be implemented in multiple rack pinion alternating load loading units.Computer
The oil mass supply in rolling bearing operation process is controlled by oil supply mechanism, torquemeter and temperature sensor can be used for detecting rolling
Performance in dynamic bearing operation process.
The above-mentioned description to embodiment is for ease of ordinary skill in the art to understand and use the invention.It is ripe
The personnel for knowing art technology obviously easily can make various modifications to these embodiments, and general original described herein
It ought to use in other embodiment without having to go through creative labor.Therefore, the utility model is not limited to the above embodiments, this
Field technology personnel announcement according to the present utility model, does not depart from improvement that the utility model scope is made and modification all should
It is within the protection scope of the utility model.
Claims (9)
1. a kind of rolling bearing fatigue life of rack pinion load alternating load tests system, for measuring rolling bearing
Fatigue life under 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, which is characterized in that the system includes,
Workbench,
Driving motor is connected on workbench,
Rotary shaft is sequentially connected with driving motor, and the rotary shaft is equipped with torquemeter,
Two stationary fixtures, are connected on workbench, and one is clamped in each stationary fixture and accompanies examination rolling bearing,
Floating holder is located between two stationary fixtures, divides fixture to form by two opposed activities, in the floating holder
It is clamped at least one subject rolling bearing, the subject rolling bearing and accompanies examination rolling bearing coaxial arrangement, and cover
If on the rotary shaft,
Temperature sensor is arranged in floating holder, and is contacted with subject rolling bearing,
Rack pinion alternating load loading unit is respectively acting on the charging assembly group that each activity divides on fixture by two
At, each charging assembly by the electric rotating machine, rack and pinion drive mechanism, load loading spring and the connector group that are sequentially connected successively
At, the connector divides fixture to connect with activity, and the load loading spring of two charging assemblies is opposite disposed in line-styled,
The telescopic direction of each load loading spring is on direction radially of the axis of rotation, and the rack and pinion drive mechanism is by successively
The worm screw of drive connection, gear and rack composition, the rack and the rack sliding seat that is arranged on workbench are in rack
It is slidably connected on length direction and rack length direction is consistent with load loading spring telescopic direction, one end of rack passes through tooth
Connecting plate is connect with load loading spring, and the worm screw is sequentially connected with electric rotating machine.
2. the rolling bearing fatigue life of rack pinion load alternating load according to claim 1 tests system,
It is characterized in that, the worm screw forms self locking type worm gear-worm structure with gear.
3. the rolling bearing fatigue life test system of rack pinion load alternating load according to claim 1 or 2
System, which is characterized in that the axis of the worm screw is parallel with the length direction of rack, and worm screw and rack separation gear two
Side.
4. the rolling bearing fatigue life of rack pinion load alternating load according to claim 1 tests system,
It is characterized in that, being clamped with two subject rolling bearings in the floating holder.
5. the rolling bearing fatigue life of rack pinion load alternating load according to claim 1 tests system,
It is characterized in that, the floating holder divides fixture and lower activity that fixture is divided to constitute by upper activity opposite to each other up and down, described is upper
Activity divide fixture bottom be equipped with upper arc groove, the lower activity divide fixture top be equipped with lower arcuate slot, upper arc groove and
Lower arcuate slot with being combined into the clamping part to match with rolling bearing, the rack pinion alternating load loading unit by
Upper charging assembly and lower charging assembly are constituted, and the upper charging assembly, which is arranged, to be divided the top of fixture in upper activity and act on
Activity divides the top of fixture, and the lower charging assembly, which is arranged to divide the lower section of fixture in lower activity and act on lower activity, divides fixture
Bottom.
6. the rolling bearing fatigue life of rack pinion load alternating load according to claim 5 tests system,
It is characterized in that, the temperature sensor setting contacts in upper arc groove or lower arcuate slot, and with the outer ring of rolling bearing.
7. the rolling bearing fatigue life of rack pinion load alternating load according to claim 1 tests system,
It is characterized in that, the rotary shaft is sequentially connected by shaft coupling and driving motor.
8. the rolling bearing fatigue life of rack pinion load alternating load according to claim 1 tests system,
It is characterized in that, the system further includes being connected respectively with the communication of driving motor, temperature sensor, torquemeter and electric rotating machine
Controller.
9. the rolling bearing fatigue life of rack pinion load alternating load according to claim 8 tests system,
It is characterized in that, the system further includes for providing the oil supply mechanism of lubricating oil to accompany examination rolling bearing and being tested rolling bearing,
The oil supply mechanism is connect with controller communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721876915.4U CN207866521U (en) | 2017-12-28 | 2017-12-28 | The rolling bearing fatigue life that rack pinion loads alternating load tests system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721876915.4U CN207866521U (en) | 2017-12-28 | 2017-12-28 | The rolling bearing fatigue life that rack pinion loads alternating load tests system |
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| Publication Number | Publication Date |
|---|---|
| CN207866521U true CN207866521U (en) | 2018-09-14 |
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ID=63463322
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721876915.4U Expired - Fee Related CN207866521U (en) | 2017-12-28 | 2017-12-28 | The rolling bearing fatigue life that rack pinion loads alternating load tests system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113295428A (en) * | 2021-04-25 | 2021-08-24 | 宁波高发汽车控制系统股份有限公司 | Simulation detection device of push rod shifter |
-
2017
- 2017-12-28 CN CN201721876915.4U patent/CN207866521U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113295428A (en) * | 2021-04-25 | 2021-08-24 | 宁波高发汽车控制系统股份有限公司 | Simulation detection device of push rod shifter |
| CN113295428B (en) * | 2021-04-25 | 2023-05-26 | 宁波高发汽车控制系统股份有限公司 | Simulation detection device of push rod gear shifter |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180914 Termination date: 20201228 |