CN207866495U - Lead screw transmission loads the rolling bearing fatigue life pilot system of alternating load - Google Patents
Lead screw transmission loads the rolling bearing fatigue life pilot system of alternating load Download PDFInfo
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- CN207866495U CN207866495U CN201721874494.1U CN201721874494U CN207866495U CN 207866495 U CN207866495 U CN 207866495U CN 201721874494 U CN201721874494 U CN 201721874494U CN 207866495 U CN207866495 U CN 207866495U
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- rolling bearing
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- fatigue life
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- lead screw
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Abstract
The utility model is related to the rolling bearing fatigue life pilot systems that a kind of lead screw transmission loads alternating load, the system controls the rotation of driving motor by computer, drive rolling bearing with given rotation speed operation, in lead screw transmission alternating load loading unit, the rotary motion of electric rotating machine is converted into linear motion by lead-screw 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 lead screw transmission 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 carry out rolling bearing fatigue life test with the simple and convenient accurate load for realizing rolling bearing alternating load in conjunction with the real working condition condition of internal combustion engine.
Description
Technical field
The utility model belongs to engine rolling bearing life experiment field, is related to a kind of lead screw transmission load alternating load
Rolling bearing fatigue life pilot 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 lead screw transmission to overcome the problems of the above-mentioned prior art
Load the rolling bearing fatigue life pilot system of alternating load.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of rolling bearing fatigue life pilot system of lead screw transmission load alternating load, exists for measuring rolling bearing
Fatigue life under one-dimensional alternate load effect, the rolling bearing are 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,
Stationary fixture A and stationary fixture B, is connected on workbench, one is clamped in each stationary fixture, examination is accompanied to roll
Bearing,
Floating holder divides fixture and lower activity point between stationary fixture A and stationary fixture B by opposed upper activity
Fixture forms, and is clamped at 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,
Lead screw transmission alternating load loading unit is respectively acting on the charging assembly group that each activity divides on fixture by two
At, each charging assembly is made of electric rotating machine, lead-screw drive mechanism, load loading spring and the connector being sequentially connected successively,
The connector is connect with floating holder, and the load loading spring of two charging assemblies is opposite disposed in line-styled, each
The telescopic direction of load loading spring is on direction radially of the axis of rotation, and the lead-screw drive mechanism is by worm screw, ball spiral shell
Female and leading screw composition, the leading screw are threaded through in ball nut, and the worm screw is with ball nut by being arranged in ball spiral shell
The screw thread engagement connection of female lateral surface, the worm screw and ball nut are fixed on by fixed frame on workbench, described
The axis direction of leading screw is consistent with the telescopic direction of load loading spring, and one end of leading screw is loaded by leading screw connecting plate and load
Spring connects, and the worm screw is sequentially connected with electric rotating machine.
Preferably, the worm screw and the screw thread of ball nut lateral surface form self locking type worm gear-worm structure.
Preferably, each charging assembly is set there are two electric rotating machine, is connected respectively by driven by clutches with the both ends of worm screw
It connects.
Preferably, the junction of the leading screw connecting plate and leading screw is equipped with swivel bearing, and one end of the leading screw is logical
The swivel bearing is crossed to be rotatablely connected with leading screw connecting plate.
Preferably, two subject rolling bearings are clamped in 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 are passed with the clamping part to match with rolling bearing, the leading screw is combined into
Dynamic alternating load loading unit is made of upper charging assembly and lower charging assembly, and upper charging assembly setting is in upper activity point
The top of fixture simultaneously acts on the top that activity divides fixture, and the lower section for dividing fixture in lower activity is arranged in the lower charging assembly
And act on the bottom that lower activity divides 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 (controller) controls the rotation of driving motor, drives rolling bearing with given rotation speed operation.In leading screw
It is driven in alternating load loading unit, the rotation of electric rotating machine is controlled by computer, will be revolved by lead-screw 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 lead screw transmission alternating load loading units.Computer passes through
Oil supply mechanism controls the oil mass supply in rolling bearing operation process, and torquemeter and temperature sensor can be used for detecting the axis of rolling
Hold the performance in operation process.
Compared with prior art, the utility model has the advantages that：
(1) rotation angle of electric rotating machine is controlled by computer (controller), and then changes compression/stretching of spring
Amount, control the elastic force of spring, may be implemented rolling bearing two relative directions (such as upper and lower directions) alternating load plus
It carries.
(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) lead screw transmission accuracy is high, improves the accuracy of load load.
(4) deceleration torque is played the role of in the use of worm screw, alleviates the burden of electric rotating machine, can select small-power
Electric rotating machine.
(5) when worm screw and rolling bearing form self locking type worm gear-worm structure, the anti-work of load loading spring is avoided
Firmly to the influence of load load, the accuracy of load load is further improved.
(6) electric rotating machine is separately connected by clutch at the both ends of leading screw, is used for the rotation of different directions, realize alternation
The load of load.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of the lead screw transmission alternating load loading unit of the utility model；
Fig. 3 is the schematic diagram of lead-screw drive mechanism；
Fig. 4 is the schematic top plan view of lead-screw drive mechanism.
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 fuel feeding
Mechanism, 7 be lead screw transmission alternating load loading unit, and 71 be worm screw, and 72 be ball nut, and 73 be leading screw, and 74 be rotary shaft
It holds, 75 be leading screw connecting plate, and 76 be fixed frame, and 8 be floating holder, and 81 divide fixture for upper activity, and 82 divide fixture for lower activity, 9
It is rotary shaft for stationary fixture B, 10,11 is accompany examination rolling bearing B, and 12 be subject rolling bearing B, and 13 be subject rolling bearing A,
14 is accompany examination rolling bearing A, and 15 be workbench, and 16 be temperature sensor, and 17 be electric rotating machine, and 18 be load loading spring,
19 be connector.
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 pilot system of lead screw transmission load alternating load is used for as shown in Figures 1 to 3
Fatigue life of the rolling bearing under one-dimensional alternate load effect is measured, 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,
Stationary fixture A5 and stationary fixture B9, is connected on workbench 15, is clamped in stationary fixture A5 and examination is accompanied to roll
It is clamped in bearing A14, stationary fixture B9 and accompanies examination rolling bearing B11, accompany examination rolling bearing A 14 and accompany examination rolling bearing B 11
Play the role of supporting rotary shaft 10,
Floating holder 8 divides fixture 81 He between stationary fixture A5 and stationary fixture B9 by upper activity opposite to each other up and down
Lower activity divides fixture 82 to form, and is clamped at least one subject rolling bearing in floating holder 8, in the present embodiment there are two clampings
It is tested rolling bearing, is respectively tested rolling bearing A13 and subject rolling bearing B12, rolling bearing is tested and accompanies the examination axis of rolling
Coaxial arrangement is held, and is set in rotary shaft 10,
Temperature sensor 16 is arranged in floating holder 8, and is contacted with subject rolling bearing,
Lead screw transmission alternating load loading unit 7 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 17, lead-screw drive mechanism, load loading spring 18 and the connector that are sequentially connected successively
19 compositions, connector 19 connect with floating holder 8, and the load loading springs 19 of two charging assemblies is in line-styled to installing
Set, the telescopic direction of each load loading spring 18 rotary shaft 10 in the radial direction, lead-screw drive mechanism by worm screw 71,
Ball nut 72 and leading screw 73 form, and leading screw 73 is threaded through in ball nut 72, and worm screw 71 is existed with ball nut 72 by setting
The screw thread engagement connection of 72 lateral surface of ball nut, worm screw 71 and ball nut 72 are fixed on workbench 15 by fixed frame 76
On, the axis direction of leading screw 73 is consistent with the telescopic direction of load loading spring 18, and one end of leading screw 73 passes through leading screw connecting plate
75 connect with load loading spring 18, and worm screw 71 is sequentially connected with electric rotating machine 17.
In the present embodiment, each charging assembly is set there are two electric rotating machine 17, as shown in figure 4, two with worm screw 71 respectively
End is connected by driven by clutches.The screw thread of worm screw 71 and 72 lateral surface of ball nut forms self locking type worm gear-worm structure, and
And the junction of leading screw connecting plate 75 and leading screw 73 is equipped with swivel bearing 74, one end of leading screw 73 by the swivel bearing 74 with
Leading screw connecting plate 75 is rotatablely connected.
Upper activity in 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
Lower arcuate slot, upper arc groove and lower arcuate slot are arranged with the clamping part to match with rolling bearing, temperature sensor 16 is combined into
It is contacted in upper arc groove or lower arcuate slot, and with the outer ring of rolling bearing.Lead screw transmission alternating load loading unit 7 is added by upper
It carries component and lower charging assembly is constituted, upper charging assembly, which is arranged, to be divided the top of fixture 81 in upper activity and act on upper activity point
The top of fixture 81, lower charging assembly, which is arranged, to be divided the lower section of fixture 82 in lower activity and acts on the bottom that lower activity divides fixture 82
Portion.
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 lead screw transmission alternation
In load loading unit, the rotation of electric rotating machine is controlled by computer, by lead-screw drive mechanism by electric rotating machine
Rotary motion is converted to linear motion, can influence the stretching/compressing amount of spring.Due to the change of the stretching/compressing amount of spring,
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 lead screw transmission alternating load loading units.Computer passes through oil supply mechanism
The oil mass supply in rolling bearing operation process is controlled, torquemeter and temperature sensor, which can be used for detecting rolling bearing, to be operated
Performance in journey.
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 (10)
1. a kind of rolling bearing fatigue life pilot system of lead screw transmission load alternating load, for measuring rolling bearing one
The fatigue life under alternate load effect is tieed up, the rolling bearing is 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 (15),
Driving motor (2) is connected on workbench (15),
Rotary shaft (10) is sequentially connected with driving motor (2), and the rotary shaft (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 accompanies
Rolling bearing is tried,
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 in the floating holder (8)
Rolling 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 subject rolling bearing,
Lead screw transmission alternating load loading unit (7) is respectively acting on the charging assembly that each activity divides on fixture by two and forms,
Each charging assembly is by the electric rotating machine (17), lead-screw drive mechanism, load loading spring (18) and the connector that are sequentially connected successively
(19) it forms, the connector (19) is connect with floating holder (8), and the load loading spring (18) of two charging assemblies is in
Line-styled is opposite disposed, the telescopic direction of each load loading spring (19) rotary shaft (10) in the radial direction, institute
The lead-screw drive mechanism stated is made of worm screw (71), ball nut (72) and leading screw (73), and the leading screw (73) is threaded through rolling
In pearl nut (72), screw thread of the worm screw (71) with ball nut (72) by setting in ball nut (72) lateral surface is nibbled
Connection is closed, the worm screw (71) and ball nut (72) are fixed on by fixed frame (76) on workbench (15), described
The axis direction of leading screw (73) is consistent with the telescopic direction of load loading spring (18), and one end of leading screw (73) is connected by leading screw
Plate (75) is connect with load loading spring (18), and the worm screw (71) is sequentially connected with electric rotating machine (17).
2. the rolling bearing fatigue life pilot system of lead screw transmission load alternating load according to claim 1, special
Sign is that the worm screw (71) and the screw thread of ball nut (72) lateral surface form self locking type worm gear-worm structure.
3. the rolling bearing fatigue life pilot system of lead screw transmission load alternating load according to claim 1, special
Sign is, each charging assembly is set there are two electric rotating machine (17), and the both ends with worm screw (71) are connected by driven by clutches respectively
It connects.
4. the rolling bearing fatigue life pilot system of lead screw transmission load alternating load according to claim 1, special
Sign is that the junction of the leading screw connecting plate (75) and leading screw (73) is equipped with swivel bearing (74), the leading screw (73)
One end pass through the swivel bearing (74) and leading screw connecting plate (75) and be rotatablely connected.
5. the rolling bearing fatigue life pilot system of lead screw transmission load alternating load according to claim 1, special
Sign is, two subject rolling bearings are clamped in the floating holder (8).
6. the rolling bearing fatigue life pilot system of lead screw transmission load alternating load according to claim 1, special
Sign is that the upper activity divides the bottom of fixture (81) to be equipped with upper arc groove, and the lower activity divides the top of fixture (82)
Equipped with lower arcuate slot, upper arc groove and lower arcuate slot are passed with the clamping part to match with rolling bearing, the leading screw is combined into
Dynamic alternating load loading unit (7) is made of upper charging assembly and lower charging assembly, and the upper charging assembly is arranged in upper work
Dynamic to divide the top of fixture (81) and act on the top that activity divides fixture (81), the lower charging assembly is arranged in lower activity
Divide the lower section of fixture (82) and acts on the bottom that lower activity divides fixture (82).
7. the rolling bearing fatigue life pilot system of lead screw transmission load alternating load according to claim 6, special
Sign is that the temperature sensor (16) setting contacts in upper arc groove or lower arcuate slot, and with the outer ring of rolling bearing.
8. the rolling bearing fatigue life pilot system of lead screw transmission load alternating load according to claim 1, special
Sign is that the rotary shaft (10) is sequentially connected by shaft coupling (3) and driving motor (2).
9. the rolling bearing fatigue life pilot system of lead screw transmission load alternating load according to claim 1, special
Sign is, the system further include respectively with driving motor (2), temperature sensor (16), torquemeter (4) and electric rotating machine (17)
Communicate the controller of connection.
10. the rolling bearing fatigue life pilot system of lead screw transmission load alternating load according to claim 9, special
Sign is, which further includes for accompany examination rolling bearing and be tested the oil supply mechanism (6) that rolling bearing provides lubricating oil, institute
The oil supply mechanism (6) stated is connect with controller communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721874494.1U CN207866495U (en) | 2017-12-28 | 2017-12-28 | Lead screw transmission loads the rolling bearing fatigue life pilot system of alternating load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721874494.1U CN207866495U (en) | 2017-12-28 | 2017-12-28 | Lead screw transmission loads the rolling bearing fatigue life pilot system of alternating load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207866495U true CN207866495U (en) | 2018-09-14 |
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ID=63463173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721874494.1U Expired - Fee Related CN207866495U (en) | 2017-12-28 | 2017-12-28 | Lead screw transmission loads the rolling bearing fatigue life pilot system of alternating load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207866495U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261111A (en) * | 2019-05-23 | 2019-09-20 | 衢州学院 | A kind of bearing in rotating machinery fault detection monitor station |
-
2017
- 2017-12-28 CN CN201721874494.1U patent/CN207866495U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261111A (en) * | 2019-05-23 | 2019-09-20 | 衢州学院 | A kind of bearing in rotating machinery fault detection monitor station |
| CN110261111B (en) * | 2019-05-23 | 2020-12-01 | 衢州学院 | Rotary machine bearing fault detection examines test table |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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 |