CN109374280A - A kind of bearing rotor system test device - Google Patents
A kind of bearing rotor system test device Download PDFInfo
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- CN109374280A CN109374280A CN201811475507.7A CN201811475507A CN109374280A CN 109374280 A CN109374280 A CN 109374280A CN 201811475507 A CN201811475507 A CN 201811475507A CN 109374280 A CN109374280 A CN 109374280A
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- 238000012360 testing method Methods 0.000 title claims abstract description 58
- 238000010438 heat treatment Methods 0.000 claims abstract description 41
- 238000004080 punching Methods 0.000 claims description 26
- 238000001514 detection method Methods 0.000 claims description 13
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
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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
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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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- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a kind of bearing rotor system test devices to expand the scope of application of bearing rotor system test device to simplify bearing rotor system test device.Bearing rotor system test device, it include: thrust loading unit, it is arranged close to an end of rotor, including thrust load bearings, thrust disc and the thrust loading device set gradually along the end direction far from rotor, thrust is applied to rotor by thrust disc, thrust load bearings by thrust loading device；Radial loaded unit, comprising: be sheathed on the radial loaded bearing of rotor, and radial load bearings are applied with the radial force loading device of radial force；Heating unit is set to rotor, for heating rotor；Driving unit, for driving rotor to rotate；Control unit, for controlling the thrust magnitude of thrust loading device generation；Control the radial force value that radial force loading device generates；Control the heating temperature of heating unit；And the revolving speed of control driving unit driving rotor rotation.
Description
Technical field
The present invention relates to experimental provision technical fields, more particularly to a kind of bearing rotor system test device.
Background technique
With the development of industry, our requirements to the temperature of bearing working, revolving speed and bearing capacity etc. are all more and more severe
It carves.Many times all can carry out spring bearing rotor-support-foundation system less than suitable bearing because of searching leads to shelving for scheme.To understand
The certainly problem, engineers design a plurality of types of transverse bearings and thrust bearing, before bearing is applied to engineering, only
The bearing come out by Theoretical Design needs a large amount of experimental data to acquire the practical limit revolving speed of bearing, ultimate bearing capacity, pole
Limit the influence to rotor-support-foundation system of operating temperature, bearing span, when revolving speed crosses critical value the Frequency Response of bearing rotor system and
Bearing life etc..
Currently, the experimental bench of most of test bearing rotor-support-foundation system is all room temperature experimental bench or independent test bearing
The high temperature experimental bench of performance.The experimental bench of independent test bearing performance cannot be used for verifying in different bearing span lower bearings to axis
The influence of bearing rotor system, and room temperature bearing rotor experimental bench is limited to the factors such as electromagnetism load, external heating device, Bu Nengyong
Under hot environment.
Summary of the invention
The purpose of the embodiment of the present invention is that a kind of bearing rotor system test device is provided, to simplify bearing rotor system survey
Trial assembly is set, and the scope of application of bearing rotor system test device is expanded.
The embodiment of the invention provides a kind of bearing rotor system test devices, comprising:
Thrust loading unit is arranged close to an end of rotor, successively including the end direction along the separate rotor
Thrust load bearings, thrust disc and the thrust loading device of setting, the thrust loading device pass through the thrust disc, described
Thrust is applied to the rotor by thrust load bearings；
Radial loaded unit, comprising: be sheathed on the radial loaded bearing of rotor, and the radial loaded bearing is applied
The radial force loading device of radial force；
Heating unit is set to the rotor, for heating the rotor；
Driving unit, for driving the rotor to rotate；
Control unit, the thrust magnitude generated for controlling the thrust loading device；Control the radial force loading device
The radial force value of generation；Control the heating temperature of the heating unit；And the control driving unit drives the rotor rotation
The revolving speed turned.
In embodiments of the present invention, optionally, the thrust loading device is that thrust loads cylinder, and the thrust load is single
Member further includes the first force snesor for being used to survey axial force being set between the thrust load cylinder and the thrust disc；
Described control unit is also used to receive the axial force of the first force snesor detection.
In embodiments of the present invention, optionally, the radial force loading device is radial loaded cylinder, the radial loaded
Unit further includes being set between the radial force load cylinder and the radial loaded bearing to be used to survey the second of radial force
Force snesor；
Described control unit is also used to receive the radial force of the second force snesor detection.
In any embodiment of the present invention, optionally, the bearing rotor system test device further include be sheathed on it is described
Rotor and the first spring bearing and the second spring bearing for being respectively arranged at radial loaded bearing two sides, first support
Distance and second spring bearing being equidistant to the radial loaded bearing of the bearing to the radial loaded bearing；
Or, distance and second spring bearing to the radial loaded axis of first spring bearing to the radial loaded bearing
The distance held differs.
In embodiments of the present invention, optionally, the both ends of first spring bearing are provided with the first spacing collar；It is described
The both ends of second spring bearing are provided with the second spacing collar.
In embodiments of the present invention, optionally, the rotor is sleeve rotor, and the heating unit is described including being inserted in
The heating rod of sleeve rotor.
In embodiments of the present invention, optionally, the heating unit further includes adding close to the rotor far from the thrust
The support of heater rod of carrier unit one end setting, the part that the heating rod exposes the rotor is supported in the support of heater rod.
In embodiments of the present invention, optionally, the driving unit includes being fixed on the rotor to add far from the thrust
The punching type turbine of carrier unit one end, the punching type turbine is for driving the rotor to rotate.
In embodiments of the present invention, optionally, the driving unit further includes being set to punching type turbine side
Nozzle bearing, and it is fixed on the nozzle bearing and multiple high speed gas source nozzles towards the punching type turbine.
In embodiments of the present invention, optionally, the multiple high speed gas source nozzle is along the circumferential equal of the punching type turbine
Even distribution.
In embodiments of the present invention, optionally, the punching type turbine and the rotor are interference fitted.
In embodiments of the present invention, optionally, the punching type turbine is also set far from the side of the thrust loading unit
It is equipped with the locking nut for being fixed on the rotor.
In embodiments of the present invention, optionally, the bearing rotor system test device further includes covering at the rotor
Shell, and the first bearing location structure for being fixed on the shell and being correspondingly arranged with first spring bearing, with institute
State the second bearing location structure that the second spring bearing is correspondingly arranged；The first bearing location structure and first support shaft
It holds and abuts against, the second bearing location structure is abutted against with second spring bearing.
In embodiments of the present invention, optionally, the bearing rotor system test device further includes being set to the shell
Thermocouple, displacement sensor and key phase；
Described control unit is also used to receive the bearing temperature of the thermocouple detection；Receive the detection of institute's displacement sensors
The rotor orbit of shaft center；Receive the revolving speed of the rotor of the key phase detection.
The bearing rotor system test device of the technical program during use, it is possible, firstly, to pass through control unit
The thrust magnitude that thrust loading device generates is controlled, which is applied to rotor by thrust disc, thrust load bearings；Secondly, control
Unit processed controls the radial force value that radial force loading device generates, which is applied to radial loaded axis, due to radial loaded
Bearing holder (housing, cover) is set to rotor, and therefore, radial force passes to rotor by radial loaded bearing；Again, added by control unit control
The heating temperature of hot cell, at a temperature of bearing rotor system can be made to be in different；Finally, control unit controls driving unit
Drive rotor rotation.
Using the bearing rotor system test device of the technical program, can during bearing rotor system operates,
Rotor is heated by heating unit, to make rotor when being under different environment temperatures from bearing to bearing rotor
Performance is detected, and compared with prior art, the structure of the bearing rotor system test device of the embodiment of the present invention is relatively simple,
And it is suitable for the test request under various temperature environment, the scope of application is wider.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the bearing rotor system test device of one embodiment of the invention；
Fig. 2 is the structural schematic diagram of the bearing rotor system test device of another embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the bearing rotor system test device of further embodiment of this invention；
Fig. 4 is the structural schematic diagram of the bearing rotor system test device of one embodiment of the invention；
Fig. 5 is the A-A cross-sectional view of bearing rotor system test device shown in Fig. 4.
Appended drawing reference:
1- thrust loading unit；
111- thrust load bearings；
112- thrust disc；
113- thrust loading device；
The first force snesor of 114-；
2- radial loaded unit；
21- radial loaded bearing；
22- radial direction force loading device；
The second force snesor of 23-；
24- pulling force rope；
3- heating unit；
31- heating rod；
32- support of heater rod；
4- driving unit；
41- punching type turbine；
42- nozzle bearing；
43- high speed gas source nozzle；
5- rotor；
The first spring bearing of 6-；
The second spring bearing of 7-；
The first spacing collar of 8-；
The second spacing collar of 9-；
10- locking nut；
11- shell；
12- first bearing location structure；
13- second bearing location structure；
14- thermocouple；
15- displacement sensor；
16- key phase；
17- temperature sensor.
Specific embodiment
To simplify bearing rotor system test device, expand the scope of application of bearing rotor system test device, the present invention
Embodiment provides a kind of bearing rotor system test device.To make the object, technical solutions and advantages of the present invention clearer,
Invention is further described in detail by the following examples.
As shown in Figures 1 to 5, the embodiment of the invention provides a kind of bearing rotor system test devices, comprising:
Thrust loading unit 1 is arranged close to an end of rotor 5, including successively setting along the end direction far from rotor 5
Thrust load bearings 111, thrust disc 112 and the thrust loading device 113 set, thrust loading device 113 pass through thrust disc
112, thrust is applied to rotor 5 by thrust load bearings 111；
Radial loaded unit 2, comprising: be sheathed on the radial loaded bearing 21 of rotor 5, and radial load bearings 21 are applied
Add the radial force loading device 22 of radial force；
Heating unit 3 is set to rotor 5, for heating rotor 5；
Driving unit 4, for driving rotor 5 to rotate；
Control unit (not shown), for controlling the thrust magnitude of the generation of thrust loading device 113；Control radial force adds
Carry the 22 radial force value for setting generation；Control the heating temperature of heating unit 3；And control driving unit 4 drives rotor 5 to rotate
Revolving speed.
The bearing rotor system test device of the technical program during use, it is possible, firstly, to pass through control unit
The thrust magnitude that thrust loading device 113 generates is controlled, which is applied to rotor by thrust disc 112, thrust load bearings 111
5；Secondly, control unit controls the radial force value that radial force loading device 22 generates, which is applied to radial loaded axis 21,
Since radial loaded bearing 21 is sheathed on rotor 5, radial force passes to rotor 5 by radial loaded bearing 21；Again,
The heating temperature that heating unit 3 is controlled by control unit, at a temperature of bearing rotor system can be made to be in different；Finally,
Control unit controls driving unit 4 and rotor 5 is driven to rotate.
Using the bearing rotor system test device of the technical program, can during bearing rotor system operates,
Rotor 5 is heated by heating unit 3, so that rotor 5 be made to turn when being under different environment temperatures from bearing to bearing
The performance of son is detected, and compared with prior art, the structure of the bearing rotor system test device of the embodiment of the present invention is more
Simply, and suitable for the test request under various temperature environment, the scope of application is wider.
As shown in Figure 1, in embodiments of the present invention, optionally, thrust loading device 113 is that thrust loads cylinder, thrust
Loading unit 1 further includes the first force snesor for being used to survey axial force being set between thrust load cylinder and thrust disc 112
114；
Control unit is also used to receive the axial force of the first force snesor 114 detection.
When thrust loading device 113 is that thrust loads cylinder, thrust can be controlled by control unit and load cylinder
Thrust magnitude, but the presence of the environmental factor due to having an impact to control signal, can make control signal fluctuate, thus not
The thrust magnitude for being applied to rotor 5 can be obtained.And first force snesor is set between cylinder and thrust disc 112 by loading in thrust
114, the thrust magnitude that the first force snesor 114 can be measured is as the actual loaded power to rotor 5.
As shown in Fig. 2, in embodiments of the present invention, optionally, radial force loading device 22 is radial loaded cylinder, radial
Loading unit 2 further includes the second power for being used to survey radial force being set between radial force load cylinder and radial loaded bearing 21
Sensor 23；
Control unit is also used to receive the radial force of the second force snesor 23 detection.
It, can be by pulling force rope 24 by radial loaded cylinder and diameter when radial force loading device 22 is radial loaded cylinder
It is connected to load bearings 21, the radial force value that radial force loads cylinder is then controlled by control unit, but due to believing control
The presence of number environmental factor having an impact can to control signal and fluctuate, so that the diameter for being applied to rotor 5 cannot be obtained
To force value.And second force snesor 23 is set between cylinder and radial loaded bearing 21 by loading in radial force, it can be by the
The radial force value that two force snesors 23 measure is as the actual loaded power to rotor 5.
As shown in figure 5, optionally, bearing rotor system test device further includes being arranged in any embodiment of the present invention
In rotor 5 and it is respectively arranged at the first spring bearing 6 and the second spring bearing 7 of 21 two sides of radial loaded bearing, the first support
Distance and second spring bearing 7 being equidistant to radial loaded bearing 21 of the bearing 6 to radial loaded bearing 21；Or, first
The distance of spring bearing 6 to radial loaded bearing 21 differs at a distance from the second spring bearing 7 to radial loaded bearing 21.
By being used to support the spring bearing of rotor in the setting of 21 two sides of radial loaded bearing, rotor 5 can be improved and turning
Stability during dynamic.Wherein, the first spring bearing 6 arrives diameter to the distance of radial loaded bearing 21 and the second spring bearing 7
Can be equal to the distance of load bearings 21, it can not also wait, radial loaded can be arrived in this way by adjusting the first spring bearing 6
The distance of bearing 21 and the second spring bearing 7 are realized to bearing rotor system to the distance of radial loaded bearing 21 not
It is tested with the performance in the case of bearing span, compared with prior art, test scope is wider.
With continued reference to shown in Fig. 5, in embodiments of the present invention, optionally, the both ends of the first spring bearing 6 are provided with first
Spacing collar 8；The both ends of second spring bearing 7 are provided with the second spacing collar 9.
The shape of spacing collar may be the same or different in various embodiments of the present invention.By the way that spacing collar is arranged
Bearing support is limited, in this way can by change sleeve change along the length of 5 extending direction of rotor spring bearing with
Spacing between radial loaded bearing 21, to further simplify the structure of bearing rotor performance testing device.
As shown in figure 5, in embodiments of the present invention, optionally, rotor 5 is sleeve rotor, and heating unit 3 includes being inserted in
The heating rod 31 of sleeve rotor.
By the way that heating rod 31 to be inserted in sleeve rotor, rotor 5 can be made by adjusting the heating temperature of heating rod 31
Be under different temperature environments from other components such as bearing, not only can to rotor 5 carry out various temperature under the conditions of
Test, can also be such that other components such as bearing are in relatively low temperature environment, to reduce the damage to it.And it will
Heating rod 31 is inserted in sleeve rotor, can further simplify the structure of bearing rotor system test device.
As shown in figure 5, in embodiments of the present invention, optionally, heating unit 3 further includes adding close to rotor 5 far from thrust
The support of heater rod 32 of 1 one end of carrier unit setting, the part that heating rod 31 exposes rotor 5 are supported in support of heater rod 32.
It is used to support the support of heater rod 32 of heating rod 31 by being arranged, can keep adding during rotor 5 operates
The stability of hot pin 31.
As shown in figure 5, in embodiments of the present invention, optionally, driving unit 4 includes being fixed on rotor 5 to add far from thrust
The punching type turbine 41 of 1 one end of carrier unit, punching type turbine 41 is for driving rotor 5 to rotate.It is driven using punching type turbine 41
5 rotation of turn will not generate axial force, to reduce the influence to 5 performance test of rotor.
As shown in Figures 3 to 5, in embodiments of the present invention, optionally, driving unit 4 further includes being set to punching type whirlpool
The nozzle bearing 42 of 41 sides is taken turns, and is fixed on nozzle bearing 42 and multiple high speed gas source nozzles towards punching type turbine 41
43。
Wherein, high speed gas source nozzle 43 can choose Laval nozzle.By the way that high speed is arranged in 41 side of punching type turbine
Gas source nozzle 43 provides high speed gas source for punching type turbine 41, to improve the working efficiency of punching type turbine 41, to improve
The revolving speed of rotor 5.
In embodiments of the present invention, optionally, multiple high speed gas source nozzles 43 uniformly divide along the circumferential of punching type turbine 41
Cloth.The stability of bearing rotor system test device in use can be improved in this way.
In embodiments of the present invention, optionally, punching type turbine 41 and rotor 5 are interference fitted.So that rotor 5 is in rotation
Process improves the dynamic balancing of bearing rotor system test device.It further, can as shown in figure 5, in embodiments of the present invention
Choosing, punching type turbine 41 is additionally provided with the locking nut 10 for being fixed on rotor 5 far from the side of thrust loading unit 1.And
In order to reduce locking nut 10 to dynamically balanced influence, the lesser locking nut 10 of thickness can be selected.
As shown in figure 5, in embodiments of the present invention, optionally, bearing rotor system test device further includes covering to turn
The shell 11 of son 5, and the first bearing location structure 12 for being fixed on shell 11 and being correspondingly arranged with the first spring bearing 6, with
The second bearing location structure 13 that second spring bearing 7 is correspondingly arranged；First bearing location structure 12 and 6 phase of the first spring bearing
It abuts, second bearing location structure 13 is abutted against with the second spring bearing 7.Since rotor 5 will drive bearing when rotating at high speed
Therefore rotation can be resisted bearing, so that bearing be made not rotate with rotor by the way that location structure is arranged.
As shown in figure 5, in embodiments of the present invention, optionally, bearing rotor system test device further includes being set to shell
Thermocouple 14, displacement sensor 15 and the key phase 16 of body 11；
Control unit is also used to receive the bearing temperature of the detection of thermocouple 14；Receive the rotor 5 that displacement sensor 15 detects
Orbit of shaft center；The revolving speed for the rotor that receive key phase 16 detects.
In the technical scheme, whether experiment desired temperature can be reached by the temperature that thermocouple 14 monitors bearing, and
And judge whether bearing fails according to whether the monitoring bearing of thermocouple 14 has temperature to rise sharply.Turned by the monitoring of displacement sensor 15
Sub 5 orbit of shaft center come judge rotor 5 whether unstability, wherein displacement sensor 15 can be eddy current displacement sensor.Key passes on from one to another
Sensor 16 can be used under hot environment, can make bearing rotor system using the revolving speed that key phase 16 monitors rotor 5 in this way
The scope of application of Guided Missiles Service Test Set is expanded.In addition, bearing rotor system test device can also include being set to shell 11
Other components such as temperature sensor 17.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (14)
1. a kind of bearing rotor system test device characterized by comprising
Thrust loading unit is arranged close to an end of rotor, including setting gradually along the end direction far from the rotor
Thrust load bearings, thrust disc and thrust loading device, the thrust loading device passes through the thrust disc, the thrust
Thrust is applied to the rotor by load bearings；
Radial loaded unit, comprising: be sheathed on the radial loaded bearing of rotor, and the radial loaded bearing applied radial
The radial force loading device of power；
Heating unit is set to the rotor, for heating the rotor；
Driving unit, for driving the rotor to rotate；
Control unit, the thrust magnitude generated for controlling the thrust loading device；The radial force loading device is controlled to generate
Radial force value；Control the heating temperature of the heating unit；And the control driving unit drives the rotor rotation
Revolving speed.
2. bearing rotor system test device as described in claim 1, which is characterized in that the thrust loading device is thrust
Cylinder is loaded, the thrust loading unit further includes being set between the thrust load cylinder and the thrust disc to be used to survey
First force snesor of axial force；
Described control unit is also used to receive the axial force of the first force snesor detection.
3. bearing rotor system test device as described in claim 1, which is characterized in that the radial direction force loading device is diameter
To load cylinder, the radial loaded unit further include be set to radial force load cylinder and the radial loaded bearing it
Between for surveying the second force snesor of radial force；
Described control unit is also used to receive the radial force of the second force snesor detection.
4. bearing rotor system test device as described in claim 1, which is characterized in that further include be sheathed on the rotor and
It is respectively arranged at the first spring bearing and the second spring bearing of radial loaded bearing two sides, first spring bearing arrives
The distance of the radial loaded bearing and the second spring bearing being equidistant to the radial loaded bearing；Or, described
First spring bearing to the radial loaded bearing distance and second spring bearing to the radial loaded bearing away from
From differ.
5. bearing rotor system test device as claimed in claim 4, which is characterized in that the both ends of first spring bearing
It is provided with the first spacing collar；The both ends of second spring bearing are provided with the second spacing collar.
6. bearing rotor system test device as described in claim 1, which is characterized in that the rotor is sleeve rotor, institute
Stating heating unit includes the heating rod for being inserted in the sleeve rotor.
7. bearing rotor system test device as claimed in claim 6, which is characterized in that the heating unit further includes close
The support of heater rod that the rotor is arranged far from thrust loading unit one end, the heating rod expose the part of the rotor
It is supported in the support of heater rod.
8. bearing rotor system test device as described in claim 1, which is characterized in that the driving unit includes being fixed on
Punching type turbine of the rotor far from thrust loading unit one end, the punching type turbine is for driving the rotor to revolve
Turn.
9. bearing rotor system test device as claimed in claim 8, which is characterized in that the driving unit further includes setting
Nozzle bearing in punching type turbine side, and it is fixed on the nozzle bearing and towards the more of the punching type turbine
A high speed gas source nozzle.
10. bearing rotor system test device as claimed in claim 9, which is characterized in that the multiple high speed gas source nozzle
Circumferential direction along the punching type turbine is uniformly distributed.
11. bearing rotor system test device as claimed in claim 8, which is characterized in that the punching type turbine with it is described
Rotor interference fit.
12. bearing rotor system test device as claimed in claim 11, which is characterized in that the punching type turbine is far from institute
The side for stating thrust loading unit is additionally provided with the locking nut for being fixed on the rotor.
13. bearing rotor system test device as described in claim 1, which is characterized in that further include covering at the rotor
Shell, and the first bearing location structure for being fixed on the shell and being correspondingly arranged with first spring bearing, with institute
State the second bearing location structure that the second spring bearing is correspondingly arranged；The first bearing location structure and first support shaft
It holds and abuts against, the second bearing location structure is abutted against with second spring bearing.
14. bearing rotor system test device as claimed in claim 13, which is characterized in that further include being set to the shell
Thermocouple, displacement sensor and key phase；
Described control unit is also used to receive the bearing temperature of the thermocouple detection；Receive the institute of institute's displacement sensors detection
State the orbit of shaft center of rotor；Receive the revolving speed of the rotor of the key phase detection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811475507.7A CN109374280B (en) | 2018-12-04 | 2018-12-04 | Bearing rotor system testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811475507.7A CN109374280B (en) | 2018-12-04 | 2018-12-04 | Bearing rotor system testing device |
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| CN109374280A true CN109374280A (en) | 2019-02-22 |
| CN109374280B CN109374280B (en) | 2024-06-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109959514A (en) * | 2019-03-29 | 2019-07-02 | 上海大学 | Match angular contact ball bearing dynamic friction performance online test device |
| CN113418701A (en) * | 2021-07-20 | 2021-09-21 | 上海人本精密机械有限公司 | Auxiliary device for detecting friction torque of precise angular contact bearing and testing machine thereof |
| CN115824618A (en) * | 2023-02-20 | 2023-03-21 | 西安航天动力研究所 | Rotor axial force loading device and rotor testing system |
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