CN107167320A - A kind of multifunction bearing intelligent lubricating experimental rig - Google Patents
A kind of multifunction bearing intelligent lubricating experimental rig Download PDFInfo
- Publication number
- CN107167320A CN107167320A CN201710552912.3A CN201710552912A CN107167320A CN 107167320 A CN107167320 A CN 107167320A CN 201710552912 A CN201710552912 A CN 201710552912A CN 107167320 A CN107167320 A CN 107167320A
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- Prior art keywords
- bearing
- experimental rig
- experiment
- multifunction
- bearing block
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- 230000001050 lubricating effect Effects 0.000 title claims abstract description 28
- 238000002474 experimental method Methods 0.000 claims abstract description 48
- 238000012360 testing method Methods 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 230000008878 coupling Effects 0.000 claims abstract description 11
- 238000010168 coupling process Methods 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 238000000429 assembly Methods 0.000 claims abstract description 9
- 230000000712 assembly Effects 0.000 claims abstract description 9
- 238000007443 liposuction Methods 0.000 claims description 23
- 239000004519 grease Substances 0.000 claims description 19
- 239000000314 lubricant Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 9
- 238000012544 monitoring process Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- G01M13/045—Acoustic or vibration analysis
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention provides a kind of multifunction bearing intelligent lubricating experimental rig, including experiment head, charging assembly, drive mechanism, control system, the experiment head includes the mandrel that experiment cavity and right-hand member are stretched in test cavity body, in the inside of the experiment cavity, the mandrel sequentially passes through left subject bearing block assembly, two groups of load bearings holder assemblies, right subject bearing block assemblies, the charging assembly includes axially loaded component and radial loaded component, and the drive mechanism includes shaft coupling and motor.Multifunction bearing intelligent lubricating experimental rig of the present invention realizes the greasing into bearing in process of the test, it is ensured that bearing has good lubricating status, while monitoring the temperature of bearing, vibration and torque signal determine whether to be tested bearing running situation.
Description
Technical field
The invention belongs to bearing test device field, more particularly, to a kind of multifunction bearing intelligent lubricating experimental rig.
Background technology
Bearing is wide variety of mechanical basic part, and the quality of its quality directly influences the quality of host performance, in addition,
Bearing is the high product of standardization, a degree of specialization, and working condition is complicated, can not judge whether to reach from profile
The requirement of actual condition, it is necessary to which the detection testing equipment simulation operating mode for having some special, which carries out experiment, could examine whether it reaches
Required technical requirements.
At present, traditional bearing test device only considered the influence of load, rotating speed, lubricating oil to bearing, and lubricating grease is
Between bearing internal external circle is added to before subject bearing is installed, it is impossible to inject new lubrication into bearing in process of the test
Fat, is measured while can not also collect the leakage fat in process of the test.
The content of the invention
In view of this, the present invention is directed to propose a kind of multifunction bearing intelligent lubricating experimental rig, is noted with reference to centralized lubrication
Fat system, can inject new lubricating grease in process of the test into bearing, while this testing stand, which also contemplates degras, reclaims system
Degras in process of the test bearing can be collected and measured by system, meanwhile, by moment of torsion during bearing operation, shake
The signals such as dynamic, temperature are monitored, and judge the running status of current bearing.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of multifunction bearing intelligent lubricating experimental rig, including experiment head, charging assembly, drive mechanism, control system；
The experiment head includes the mandrel that experiment cavity and right-hand member are stretched in test cavity body, in the experiment cavity
Portion, the mandrel sequentially passes through left subject bearing block assembly, two groups of load bearings holder assemblies, right subject bearing block assemblies, described
It is provided with the left subject bearing with its interference fits, the right subject bearing block assembly and is provided with left subject bearing block assembly
With the right subject bearing of its interference fits, the loading is tested the loading axis being provided with bearing block assembly with its interference fits
Hold, respectively opened up in oriented bearing in the left subject bearing block assembly, load bearings holder assembly, right subject bearing block assembly
The liposuction passage for injecting the greasing passage of lubricant grease and discharging lubricant grease, the greasing passage passes through oil pipe and greasing
Equipment is connected, and the liposuction passage is connected by oil pipe with liposuction equipment；The charging assembly includes axially loaded component and footpath
To charging assembly, the axially loaded component is arranged on the right side of mandrel, and the radial loaded component is arranged on load bearings group
The downside of part；
The drive mechanism includes shaft coupling and motor, the output end connection shaft coupling of the motor, the end of the mandrel
End connection shaft coupling, torque sensor is additionally provided between the motor and mandrel.
Further, the charging assembly includes hydraulic actuating mechanism and pressure sensor, the hydraulic actuating mechanism
Contiguous block is provided with output end, the pressure sensor is embedded in contiguous block.
Further, the outside of the charging assembly is provided with connecting plate.
Further, the side wall of the left subject bearing block assembly and right subject bearing block assembly offers some installations
Temperature sensor and vibrating sensor are separately installed with hole, the mounting hole.
Further, it is described experiment cavity inside be additionally provided with left axle to positioning end cap and right axle to positioning end cap, institute
State the outer wall for the mandrel that left axle is arranged on to positioning end cap between left subject bearing block assembly and experiment cavity wall, the right axle
Core the tip of the axis is arranged to positioning end cap.
Further, the grease outlet of the greasing passage and liposuction passage is provided with the first connector, the experiment cavity
Side wall be provided with the second connector, be connected with grease duct, described second between first connector and the second connector
The other end of connector is connected with greasing equipment and liposuction equipment respectively.
Further, the control system and drive mechanism, experiment head, charging assembly, torque sensor, pressure sensing
Device, temperature sensor, vibrating sensor, greasing equipment and the connection of liposuction device signal.
Further, the experimental rig also includes workbench, and the experiment head, drive mechanism may be contained within workbench
Surface, the radial loaded mechanism is arranged at the lower surface of workbench.
Further, the periphery of the left subject bearing block assembly and right subject bearing block assembly is provided with support base,
The support base is fixed with testing the bottom surface of cavity.
Further, the upper lid of experiment cavity can be opened and cover by being offered at the top of the experiment cavity.
Relative to prior art, multifunction bearing intelligent lubricating experimental rig of the present invention has the advantage that：
(1) multifunction bearing intelligent lubricating experimental rig of the present invention is realized notes in process of the test into bearing
Fat, it is ensured that bearing has good lubricating status, is received the leakage fat in process of the test middle (center) bearing while the device is also realized
Collection；
(2) pressure sensor, torque sensor, temperature sensor and vibration are provided with experimental rig of the present invention
Sensor, by control system to bearing temperature, moment of torsion, vibration signal analysis, judge bearing whether lack fat so that control note
Fat system performs greasing action, and compared to traditional grease filling system at regular time and quantity, this experimental rig is realized to be transported according to bearing
The function of greasing on demand is realized in the judgement of market condition.
(3) present invention is also monitored to the signal such as moment of torsion, vibration, temperature during bearing operation, simple in construction, processing
Convenient, subject bearing is easy for installation, the advantages of easy to disassemble.
Brief description of the drawings
The accompanying drawing for constituting the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the overall structure diagram of the multifunction bearing intelligent lubricating experimental rig described in the embodiment of the present invention；
Fig. 2 is the structural representation of the experiment head described in the embodiment of the present invention；
Fig. 3 is the A-A sectional views described in the embodiment of the present invention.
Description of reference numerals：
1- motors；2- shaft couplings；3- torque sensors；4- shaft couplings；5- tests head；The axially loaded components of 6-；7- is radially
Charging assembly；8- workbench；9- hydraulic actuating mechanisms；10- pressure sensors；11- tests cavity；12- mandrels；13- left axles to
Position end cap；14- right axles to positioning end cap；The left subject bearing block assemblies of 15-；The right subject bearing group seat piece of 16-；17- loading axis
Bearing component；The left subject bearings of 18-；The right subject bearings of 19-；20- load bearings；21- load bearings；22- greasing passages；23-
First connector；24- liposuction passages；25- contiguous blocks；26- connecting plates；The connectors of 27- second；28- grease ducts；29- is supported
Seat；Covered on 30-.
Embodiment
It should be noted that in the case where not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Mutually combination.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than indicate or dark
Specific orientation must be had, with specific azimuth configuration and operation by showing the device or element of meaning, therefore it is not intended that right
The limitation of the present invention.In addition, term " first ", " second " etc. are only used for describing purpose, and it is not intended that indicating or implying phase
To importance or the implicit quantity for indicating indicated technical characteristic.Thus, the feature for defining " first ", " second " etc. can
To express or implicitly include one or more this feature.In the description of the invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in figure 1, a kind of multifunction bearing intelligent lubricating experimental rig, including test first 5, workbench 8, loading group
Part, drive mechanism, control system；Experiment first 5, drive mechanism may be contained within the upper surface of workbench 8.
Charging assembly includes axially loaded component 6 and radial loaded component 7.
As shown in Fig. 2 experiment first 5 includes experiment cavity, experiment cavity wall is respectively arranged with three through holes, three through holes
Mandrel 12, axially loaded component 6 and radial loaded component 7 are respectively mounted,
The right-hand member of mandrel 12 is stretched in experiment cavity 11, and in the inside of experiment cavity 11, mandrel 12 sequentially passes through left quilt
Try to set in bearing block assembly 15, two groups of load bearings holder assemblies 17, right subject bearing block assemblies 16, left subject bearing block assembly 15
It is equipped with the right subject being provided with the left subject bearing 18 with its interference fits, right subject bearing block assembly 16 with its interference fits
The load bearings 20,21 with its interference fits are provided with bearing 19, loading subject bearing block assembly 17.
As shown in figure 3, in left subject bearing block assembly 15, load bearings holder assembly 17, right subject bearing block assembly 16
Greasing passage 22 and the liposuction passage 24 for discharging lubricant grease in bearing block assembly, greasing passage 22 and note are offered respectively
Fat equipment connects (not shown), and liposuction passage 24 connects (not shown) with liposuction equipment；Left subject bearing block assembly
15 and the side wall of right subject bearing block assembly 16 offer to be separately installed with some mounting holes, mounting hole and temperature sensor and shake
Dynamic sensor, temperature and vibration parameters for detecting subject bearing.The position of temperature sensor is not unique, in order to enter one
The step detection subject bearing temperature conditions of one week, as needed can pass temperature in the mounting hole that opens up up and down of subject bearing
Sensor loads.In addition, the sensor in the present invention realizes what different sensors were installed by general installation device of sensor
Generalization, different types of sensor can be installed using general purpose transducer erecting device, at the same be easy to sensor installation and
Dismounting.
Experiment cavity 11 inside be additionally provided with left axle to positioning end cap 13 and right axle to positioning end cap 14, left axially position
End cap 13 is arranged on the outer wall of the mandrel 12 between left subject bearing block assembly 15 and the experiment side wall of cavity 11, and right axle is to positioning end
Lid is arranged at the end of mandrel 12.Left axle to positioning end cap 13 and right axle to positioning end cap 14 effect be that bearing block is fixed
Positioning, prevents from moving left and right influence experimental result in process of the test middle (center) bearing.
It is cube structure to test cavity 11, main to act to support each several part and to each position components, its
Bottom is provided with degras outlet, and lubricant grease is discharged, test for contamination cavity 11 is prevented.The top of experiment cavity 11 offers energy
Enough upper lids 30 for opening and covering experiment cavity 11, facilitate viewing test process and maintenance.
Axially loaded component 6 is arranged on the right side of mandrel 12, and radial loaded component 7 is arranged under load bearings component 17
Side, positioned at the lower surface of workbench 8, charging assembly includes hydraulic actuating mechanism 9 and pressure sensor 10, hydraulic actuating mechanism 9
Output end in be provided with contiguous block 25, pressure sensor 10 is embedded in contiguous block 25.The outside of charging assembly is provided with connection
Plate 26.
One end of connecting plate 26 is bolted with experiment cavity, and the other end is connected with hydraulic actuating mechanism 9, connection
The one side of plate 26 can play a part of fixed charging assembly, on the other hand also charging assembly can be protected not done by external environment
Disturb.
Drive mechanism includes shaft coupling 2,4, torque sensor 3 and motor 1, and torque sensor 3 is distinguished by shaft coupling 2,4
It is connected with the mandrel 12 in the output shaft and experiment first 5 of motor 1.
The periphery of left subject bearing block assembly 15 and right subject bearing block assembly 16 is provided with support base 29, support base 29
Fixed with the bottom surface of experiment cavity 11.
The grease outlet of greasing passage 22 and liposuction passage 24 is provided with the first connector 23, and the side wall of experiment cavity is provided with
Second connector 27, is connected with grease duct 28 between the first connector 23 and the second connector 27, the second connector 27 it is another
One end is connected with greasing equipment and liposuction equipment (not shown) respectively.
Control system and drive mechanism, experiment first 5, charging assembly, torque sensor 3, pressure sensor 10, TEMP
Device, vibrating sensor, greasing equipment and the connection of liposuction device signal.Set-up of control system has industrial control computer, realization pair
Preset and to temperature signal, loading signal etc. the acquisition and processing of test parameters, and feedback is controlled in good time.
The operation principle of the present invention：
Loading
Whether power-on, opening control, detecting system is normal, and carrying out leakage lipid according to test type selection can try
Test, temperature rise model experiment, vibration performance experiment or torsional performance experiment etc., experiment before control axially loaded group by control system
Part 6 and radial loaded component 7 are tested bearing 18, right subject bearing 19 and apply axial load and radial load to the left, just may be used afterwards
Start drive mechanism.
Greasing
Lubricating grease is injected into subject bearing on demand according to the greasing boundary value of set-up of control system by greasing equipment, protected
Demonstrate,prove bearing and be in normal lubricating status.
Liposuction
The liposuction time set by liposuction equipment according to control system, which will be accumulated to the lubricating grease in liposuction oil duct, extracts out
To be collected.Gather torque sensor 3, pressure sensor 10, temperature sensor, vibration biography in real time by control system simultaneously
The signal of sensor, and the work such as drive mechanism, charging assembly, greasing equipment and liposuction equipment are controlled according to the signal of feedback.
As a result test
Bearing after the completion of experiment is taken out into its quality of weighing from experiment head to be contrasted with the quality before experiment, to comment
The wear resistance of valency lubricating grease.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (9)
1. a kind of multifunction bearing intelligent lubricating experimental rig, it is characterised in that：The experimental rig includes experiment head, loading group
Part, drive mechanism, control system；
The experiment head includes the mandrel that experiment cavity and right-hand member are stretched in test cavity body, in the inside of the experiment cavity,
The mandrel sequentially passes through left subject bearing block assembly, two groups of load bearings holder assemblies, right subject bearing block assemblies, the left quilt
It is provided with the left subject bearing with its interference fits, the right subject bearing block assembly and is provided with and it in examination bearing block assembly
The load bearings with its interference fits, institute are provided with the right subject bearing of interference fits, the loading subject bearing block assembly
State in left subject bearing block assembly, load bearings holder assembly, right subject bearing block assembly and respectively open up injection in oriented bearing
The greasing passage of lubricant grease and the liposuction passage for discharging lubricant grease, the greasing passage are connected with greasing equipment, institute
Liposuction passage is stated to connect with liposuction equipment；
The charging assembly includes axially loaded component and radial loaded component, and the axially loaded component is arranged on the right side of mandrel
Side, the radial loaded component is arranged on the downside of load bearings component；
The drive mechanism includes shaft coupling and motor, and the output end connection shaft coupling of the motor, the core the tip of the axis connects
Shaft coupling is connect, torque sensor is additionally provided between the motor and mandrel.
2. multifunction bearing intelligent lubricating experimental rig according to claim 1, it is characterised in that：The charging assembly bag
Include and contiguous block is provided with hydraulic actuating mechanism and pressure sensor, the output end of the hydraulic actuating mechanism, the pressure is passed
Sensor is embedded in contiguous block.
3. multifunction bearing intelligent lubricating experimental rig according to claim 2, it is characterised in that：The charging assembly
Outside is provided with connecting plate.
4. multifunction bearing intelligent lubricating experimental rig according to claim 2, it is characterised in that：The left subject bearing
The side wall of holder assembly and right subject bearing block assembly offers in some mounting holes, the mounting hole and is separately installed with TEMP
Device and vibrating sensor.
5. multifunction bearing intelligent lubricating experimental rig according to claim 1, it is characterised in that：The experiment cavity
Inside is additionally provided with left axle to positioning end cap and right axle to positioning end cap, and the left axle is arranged on left subject bearing to positioning end cap
The outer wall of mandrel between holder assembly and experiment cavity wall, the right axle is arranged at core the tip of the axis to positioning end cap.
6. multifunction bearing intelligent lubricating experimental rig according to claim 1, it is characterised in that：The greasing passage and
The grease outlet of liposuction passage is provided with the first connector, and the side wall of the experiment cavity is provided with the second connector, described first
It is connected with grease duct between connector and the second connector, the other end of second connector is respectively with greasing equipment and taking out
Fat equipment is connected.
7. multifunction bearing intelligent lubricating experimental rig according to claim 4, it is characterised in that：The control system with
Drive mechanism, experiment head, charging assembly, torque sensor, pressure sensor, temperature sensor, vibrating sensor, greasing equipment
With the connection of liposuction device signal.
8. multifunction bearing intelligent lubricating experimental rig according to claim 1, it is characterised in that：The experimental rig is also
Including workbench, the experiment head, drive mechanism may be contained within worktable upper surface, and the radial loaded mechanism is arranged at work
The lower surface of platform.
9. multifunction bearing intelligent lubricating experimental rig according to claim 1, it is characterised in that：The left subject bearing
The periphery of holder assembly and right subject bearing block assembly is provided with support base, and the support base is fixed with testing the bottom surface of cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710552912.3A CN107167320A (en) | 2017-07-07 | 2017-07-07 | A kind of multifunction bearing intelligent lubricating experimental rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710552912.3A CN107167320A (en) | 2017-07-07 | 2017-07-07 | A kind of multifunction bearing intelligent lubricating experimental rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107167320A true CN107167320A (en) | 2017-09-15 |
Family
ID=59823337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710552912.3A Pending CN107167320A (en) | 2017-07-07 | 2017-07-07 | A kind of multifunction bearing intelligent lubricating experimental rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107167320A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108760315A (en) * | 2018-08-13 | 2018-11-06 | 浙江优特轴承有限公司 | Spindle nose Work condition analogue mechanism for bearing tester |
| CN109238696A (en) * | 2018-10-29 | 2019-01-18 | 宁夏天地奔牛实业集团有限公司 | Intelligent horizontal axis cutting speed reducer load test system and load test method |
| CN110702409A (en) * | 2019-09-29 | 2020-01-17 | 中国航发北京航空材料研究院 | Elastic joint bearing fatigue test device |
| CN113567121A (en) * | 2021-08-27 | 2021-10-29 | 中浙高铁轴承有限公司 | Helicopter engine input end shafting bearing test loading device |
| CN113959713A (en) * | 2021-10-28 | 2022-01-21 | 中国第一汽车股份有限公司 | Testing device and testing method for lubrication type test of transmission part |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108760315A (en) * | 2018-08-13 | 2018-11-06 | 浙江优特轴承有限公司 | Spindle nose Work condition analogue mechanism for bearing tester |
| CN109238696A (en) * | 2018-10-29 | 2019-01-18 | 宁夏天地奔牛实业集团有限公司 | Intelligent horizontal axis cutting speed reducer load test system and load test method |
| CN109238696B (en) * | 2018-10-29 | 2024-04-05 | 宁夏天地奔牛实业集团有限公司 | Loading test system and loading test method for intelligent transverse shaft cutting speed reducer |
| CN110702409A (en) * | 2019-09-29 | 2020-01-17 | 中国航发北京航空材料研究院 | Elastic joint bearing fatigue test device |
| CN110702409B (en) * | 2019-09-29 | 2021-10-15 | 中国航发北京航空材料研究院 | Elastic joint bearing fatigue test device |
| CN113567121A (en) * | 2021-08-27 | 2021-10-29 | 中浙高铁轴承有限公司 | Helicopter engine input end shafting bearing test loading device |
| CN113959713A (en) * | 2021-10-28 | 2022-01-21 | 中国第一汽车股份有限公司 | Testing device and testing method for lubrication type test of transmission part |
| CN113959713B (en) * | 2021-10-28 | 2024-05-03 | 中国第一汽车股份有限公司 | Test device and test method for lubrication type test of transmission part |
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Application publication date: 20170915 |
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