CN109238697A - A kind of rotor-bearing system for high speed water lubrication hydrodynamic bearing performance test - Google Patents
A kind of rotor-bearing system for high speed water lubrication hydrodynamic bearing performance test Download PDFInfo
- Publication number
- CN109238697A CN109238697A CN201810934663.9A CN201810934663A CN109238697A CN 109238697 A CN109238697 A CN 109238697A CN 201810934663 A CN201810934663 A CN 201810934663A CN 109238697 A CN109238697 A CN 109238697A
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- bearing
- high speed
- main shaft
- rotor
- performance test
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- 238000005461 lubrication Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000011056 performance test Methods 0.000 title claims abstract description 25
- 238000012360 testing method Methods 0.000 claims abstract description 43
- 238000007667 floating Methods 0.000 claims abstract description 13
- 238000003825 pressing Methods 0.000 claims description 9
- 229910000737 Duralumin Inorganic materials 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 10
- 230000001050 lubricating effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 20
- 238000011160 research Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000036316 preload Effects 0.000 description 3
- 238000003556 assay Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012827 research and development 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a kind of rotor-bearing systems for high speed water lubrication hydrodynamic bearing performance test, belong to technical field of mechanical design.The rotor-bearing system includes main shaft (1), the high speed roller bearing (6) being mounted on main shaft (1), flexible clutch (17) in main shaft (1) left end is set, support the left support (14) and right support (9) of shafting, the test bearing axle journal (19) being arranged in the middle part of main shaft (1), test bearing bearing shell (18) and floating bearing bracket (3), be arranged main shaft (1) right end bearing pre-tightening device and be arranged in series connection bearing in the middle part of oil gas nozzle (8).A kind of rotor-bearing system of high speed water lubrication hydrodynamic bearing performance test provided by the invention, axle journal is replaceable, high lubricating effect, and rotating accuracy is high, and limit speed is big, can meet the test needs of high speed water lubrication hydrodynamic bearing performance test.
Description
Technical field
The invention discloses a kind of rotor-bearing systems for high speed water lubrication hydrodynamic bearing performance test, belong to machinery
Design field.
Background technique
The dynamic parameters such as oil film bearings rigidity, damping directly affect the kinetic characteristics of rotor-support-foundation system, to rotor
Rigidity, stability, critical speed etc. have a major impact.Since the factor for influencing oil film dynamic parameter is numerous, sliding bearing
In research, dynamic parametric test research is essential.Water-lubricated dynamic bearing have high speed performance it is good, it is at low cost, pollution-free,
Many advantages, such as peripheral equipment is simple is one of the Main way of current bearing research field, carries out high speed water lubrication dynamic pressure shaft
The testing research held is very necessary.
Research and development water lubriucated bearing dynamic performance and testing is the basis for completing test.The core of the test device
Part ----high speed rotor supporting system directly affects test stand performance, decides the reliability and test essence of test data
Degree.Rotor working speed is high, bearing heating amount is big, vibratory output to be measured is small in the test of water-lubricated dynamic bearing performance, this is to rotor
The design of supporting system proposes requirements at the higher level.However, up to the present, bearing dynamic performance testing related patents collect more
In in middle and slow speed of revolution oil lubrication testing stand structure configure design.There is not yet related be used for high speed water lubrication hydrodynamic bearing
The patent report for the rotor-bearing system that can be tested.For this demand, it is dynamic for high speed water lubrication that the invention discloses one kind
Last item holds the rotor-bearing system of performance test, it is intended to improve the rotational speed of water lubriucated bearing test device, promote rotor branch
The kinetic characteristics for holding system improve the reliability of test result and the accuracy of test data.
Summary of the invention
Technical problem: the technology proposed for water-lubricated dynamic bearing performance test device to its rotor-bearing system is wanted
It asks, the invention discloses a kind of rotor-bearing system for high speed water lubrication hydrodynamic bearing performance test, which has axis
Hold the feature that temperature rise is low, vibration of rotor system is small, it is intended to improve the measuring accuracy of water-lubricated dynamic bearing performance test device.
A kind of technical solution: rotor bearing system for high speed water lubrication hydrodynamic bearing performance test disclosed by the invention
System, to solve the above problems, the technical solution adopted by the present invention is that:
The system includes main shaft, is mounted on the high speed roller bearing at main shaft both ends, is placed in series high-speed rolling bearing
Between oil gas nozzle, support the left support and right support of high speed roller bearing, be mounted on the flexible clutch of main shaft left end, if
The test bearing bearing shell in the middle part of main shaft is set, test bearing axle journal is between main shaft and test bearing bearing shell, test bearing axis
Watt outside be fixed on floating bearing bracket.
Wherein:
The right support of the main shaft, right end is equipped with right support end cap, and bearing pre-tightened spring is located in right support end cap,
For bearing pre-tightened pressing plate between high speed roller bearing and right support end cap, the both ends of bearing pre-tightened spring are pressed respectively against bearing
It pre-tightens on pressing plate and right support end cap.
The main shaft left end is connect by flexible clutch with driving source, the high speed rotation under high speed roller bearing bearing.
The flexible clutch selects light-duty duralumin material production, is connect by fine thread with main shaft, flexible clutch
Right end disk last week to several axial circular holes are evenly equipped with, pass through circular hole using tightrope and connect with driving source；Tightrope is being facilitated to connect
In the case where, right end disk diameter is the smaller the better, and circular hole quantity generally takes 8,10 or 12, and diameter is greater than tightrope diameter 0.5-
1mm。
The main shaft and test bearing axle journal pass through the small cone match of 1:100-1:50, are locked using axle journal fastening nut
It is fixed.
The oil gas nozzle oil gas vent quantity is 2-4, exports draw ratio L/d value between 6-7, exports to axis
Bearing roller distance s takes 0.5 times of bearing width value or so.
The main shaft, bearing stride and equivalent diameter ratio are less than 6, and balance level meets G0.4, and first critical speed is greater than
1.3 times of highest working speed.
The utility model has the advantages that a kind of rotor bearing system for high speed water lubrication hydrodynamic bearing performance test disclosed by the invention
System, subject bearing journal is replaceable, and bearing lubrication effect is good, and rotor rotating accuracy is high, and experimental rig limit speed is high, this hair
Bright patent provides device designing technique for the performance test of high speed water lubrication hydrodynamic bearing.
Detailed description of the invention
Fig. 1 is the topology layout for the rotor-bearing system of high speed water lubrication hydrodynamic bearing performance test；
Fig. 2 is the structure of flexible clutch；
Fig. 3 is detachable journal structure；
Fig. 4 is peed system basic configuration；
Fig. 5 is oil gas nozzle arrangements and working principle.
Have in figure: main shaft 1, floating bearing bracket left end cap 2, floating bearing bracket 3, axle journal fastening nut 4, floating bearing bracket
Right end cap 5, high speed roller bearing 6, retaining ring 7, oil gas nozzle 8, right support 9, bearing pre-tightened bolt 10, bearing pre-tightened pressing plate 11,
Right support end cap 12, left support 14, connection bolt 15, left support end cap 16, flexible clutch 17, is surveyed bearing pre-tightened spring 13
Bearing bush 18, test bearing axle journal 19, air compressor 20, filter 21, air accumulator 22, cooling driers 23, oil gas is tried to occur
Device 24.
S is distance of the oil gas jet expansion to bearing roller, and L is oil gas nozzle length, and d is the diameter of oil gas nozzle.
Specific embodiment
1, a kind of rotor-bearing system for high speed water lubrication hydrodynamic bearing performance test disclosed by the invention, such as Fig. 1
Shown, which specifically includes main shaft 1, floating bearing bracket left end cap 2, floating bearing bracket 3, axle journal fastening nut
4, floating bearing bracket right end cap 5, high speed roller bearing 6, retaining ring 7, oil gas nozzle 8, right support 9, bearing pre-tightened bolt 10, axis
It holds and pre-tightens pressing plate 11, right support end cap 12, bearing pre-tightened spring 13, left support 14, connection bolt 15, left support end cap 16, soft
Property shaft coupling 17, test bearing bearing shell 18 and test bearing axle journal 19.Flexible clutch 17 is the structure specially designed, is led to
Tightrope connection transmitting power is crossed, is connect using fine thread with main shaft 1, transmitting driving moment drives 1 high speed rotation of main shaft；It is left
Bracket end cap 16 is connect by connecting bolt 15 with left support 14；High speed roller bearing 6 uses face-to-face serial arrangement,
Series connection bearing intermediate arrangement has oil gas nozzle 8, and 19 conical surface of test bearing axle journal and main shaft 1 cooperate, and uses axle journal fastening nut 4
It is locked；Test bearing bearing shell 18, floating bearing bracket left end cap 2, floating bearing bracket right end cap 5 and floating bearing bracket 3 are whole
In body floating and main shaft 1；Bearing pre-tightened spring 13 is arranged between right support end cap 12 and bearing pre-tightened pressing plate 11；Right support
End cap 12 is connected by bearing pre-tightened bolt 10 with right support 9, moves compressional axis to the left under the effect of bearing pre-tightened bolt 10
Preloading spring 13 is held, compressed bearing pre-tightened spring 13 pushes bearing pre-tightened pressing plate 11 to move to the left, bearing pre-tightened pressing plate
11 are transferred to preload pressure on high speed roller bearing 6, realize bearing pre-tightened, and pretightning force size can pass through bearing pre-tightened bolt
10 are adjusted.
2, flexible clutch designs, a kind of rotor bearing for high speed water lubrication hydrodynamic bearing performance test of the invention
System, flexible clutch 17 select duralumin production, may pass through circle to 10 axial circular holes, tightrope is evenly equipped with right end disk last week
Hole is attached, and inner hole is connect by M16 fine thread with main shaft 1, and flexible clutch (17) structure is simple, light weight, tool
Body structure is shown in Fig. 2.
3, detachable axle journal design, a kind of rotor branch for high speed water lubrication hydrodynamic bearing performance test of the invention
System is held, as shown in figure 3, test bearing axle journal 19 is cooperated by the small conical surface and main shaft of 1:50, uses axle journal fastening nut 4
It being locked, axle journal is quick detachable, and it is replaceable, meet the requirement that test bearing need to be replaced often.
4, oil-air lubrication designs, and specifically includes following two parts work:
(a) peed system configuration designs, as shown in figure 4, the system specifically includes oil gas
The equipment such as device 24, cooling driers 23, air compressor 20 and filter 21, air accumulator 22.Air compressor 20 generates high pressure gas
Body, high pressure gas reaches air accumulator 22 through filter 21, then through cooling driers 23, flows through oil gas generator 24 with constant pressure；Oil
Lubricating oil is infused high-pressure gas pipeline by gas generator, and oil gas is finally transported to by lubrication bearing.
(b) optimal values for determining oil gas nozzle key geometric parameter, utilize the examination of thermocouple assay bearing working temperature rise
Proved recipe method obtains each parameter to the affecting laws of oil-air lubrication effect, according to the result of test, it is determined that key parameter is most
Good value, wherein oil gas jet expansion quantity is 2, and outlet draw ratio L/d is 6.4, and exporting to bearing roller distance s is
6.4mm。
5, rotor-bearing system important indicator is checked, and specifically includes following three parts content:
(a) bearing stride is checked, and to reduce influence of the main shaft deflection deformation to test data, main axis stiffness should be as far as possible
Greatly, main shaft supporting span should reduce as far as possible.In reserved corresponding test sensor installation space, as far as possible by the rotor branch
It is compact to design to hold system axial structure, final span is designed as 160mm, and main shaft equivalent diameter is 30.4mm, and span is worked as with main shaft
It measures diameter ratio and is equal to 5.26, less than 6.
(b) dynamic balancing is checked, and main shaft amount of unbalance is as small as possible, at rotor highest working speed 30000rpm, is carried out
Dynamic balance test of rotor checks amount of unbalance, and rotor unbalance quality is 0.006g after check, meets balance level G0.4's
It is required that.
(c) critical speed check, using ANSYS finite element software calculate three kinds pre-tighten in the case of rotor-bearing system
Critical speed and the vibration shape, the results are shown in Table 1.By calculated result it is found that the first critical speed point of three kinds of preload situation lower rotor parts
Not Wei 68010rpm, 82932rpm, 97446rpm, rotor highest working speed is 30000rpm, and first critical speed is respectively
226.7%, 276.4%, the 324.8% of rotor highest working speed, meets design requirement, it is ensured that test reliability and examination
Test the accuracy of data.
A kind of rotor-bearing system for high speed water lubrication hydrodynamic bearing performance test disclosed by the invention, axle journal can be more
It changes, high lubricating effect, rotating accuracy is high, and limit speed is high, keeps bearing test more convenient, improves the reliable of test result
The accuracy of property and test data.
1 three kinds of preload situation Critical Rotating Speed Calculation results of table
Claims (7)
1. a kind of rotor-bearing system for high speed water lubrication hydrodynamic bearing performance test, which is characterized in that the system includes
Main shaft (1) is mounted on the high speed roller bearing (6) at main shaft (1) both ends, is placed on the intermediate oil of series high-speed rolling bearing (6)
Gas jets (8) support the left support (14) and right support (9) of high speed roller bearing (6), are mounted on the flexibility of main shaft (1) left end
Shaft coupling (17), is arranged test bearing bearing shell (18) in the middle part of main shaft (1), test bearing axle journal (19) be located at main shaft (1) and
Between test bearing bearing shell (18), the outside of test bearing bearing shell (18) is fixed on floating bearing bracket (3).
2. a kind of rotor-bearing system for high speed water lubrication hydrodynamic bearing performance test according to claim 1,
It is characterized in that the main shaft (1), the right support (9) of right end is equipped with right support end cap (12), bearing pre-tightened spring (13) position
In right support end cap (12), bearing pre-tightened pressing plate (11) is located between high speed roller bearing (6) and right support end cap (12), axis
The both ends for holding preloading spring (13) are pressed respectively against on bearing pre-tightened pressing plate (11) and right support end cap (12).
3. a kind of rotor-bearing system for high speed water lubrication hydrodynamic bearing performance test according to claim 1,
It is characterized in that the main shaft (1) left end is connect by flexible clutch (17) with driving source, under high speed roller bearing (6) bearing
High speed rotation.
4. a kind of rotor-bearing system for high speed water lubrication hydrodynamic bearing performance test according to claim 3,
It is characterized in that, the flexible clutch (17) selects light-duty duralumin material production, is connect by fine thread with main shaft (1), soft
Property shaft coupling (17) right end disk last week to several axial circular holes are evenly equipped with, pass through circular hole using tightrope and connect with driving source；?
In the case where facilitating tightrope to connect, right end disk diameter is the smaller the better, and circular hole quantity generally takes 8,10 or 12, and diameter is greater than soft
Restrict diameter 0.5-1mm.
5. a kind of rotor-bearing system for high speed water lubrication hydrodynamic bearing performance test according to claim 1,
It is characterized in that, the main shaft (1) and test bearing axle journal (19) are fastened by the small cone match of 1:100-1:50 using axle journal
Nut (4) is locked.
6. a kind of rotor-bearing system for high speed water lubrication hydrodynamic bearing performance test according to claim 1,
It is characterized in that, oil gas nozzle (8) the oil gas vent quantity is 2-4, exports draw ratio L/d value between 6-7, exports to
Bearing roller distance s takes 0.5 times of bearing width value.
7. a kind of rotor-bearing system for high speed water lubrication hydrodynamic bearing performance test according to claim 1,
It is characterized in that, the main shaft (1), less than 6, balance level meets G0.4, first critical speed for bearing stride and equivalent diameter ratio
Greater than 1.3 times of highest working speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810934663.9A CN109238697B (en) | 2018-08-16 | 2018-08-16 | Rotor supporting system for testing performance of high-speed water lubrication dynamic pressure bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810934663.9A CN109238697B (en) | 2018-08-16 | 2018-08-16 | Rotor supporting system for testing performance of high-speed water lubrication dynamic pressure bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109238697A true CN109238697A (en) | 2019-01-18 |
| CN109238697B CN109238697B (en) | 2020-10-16 |
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ID=65070072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810934663.9A Expired - Fee Related CN109238697B (en) | 2018-08-16 | 2018-08-16 | Rotor supporting system for testing performance of high-speed water lubrication dynamic pressure bearing |
Country Status (1)
| Country | Link |
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| CN (1) | CN109238697B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115694050A (en) * | 2022-12-28 | 2023-02-03 | 合力（天津）能源科技股份有限公司 | Special motor structure in oil pit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101876590A (en) * | 2009-12-04 | 2010-11-03 | 华中科技大学 | Comprehensive performance test table for water-lubricated dynamic-static pressure radial sliding bearing |
| CN105259099A (en) * | 2015-10-26 | 2016-01-20 | 东南大学 | Superspeed water lubrication bearing cavitation erosion testing device |
| CN105403408A (en) * | 2015-12-01 | 2016-03-16 | 哈尔滨电机厂有限责任公司 | Bidirectional-loading double-turning water-lubrication thrust bearing testing apparatus with pretightening force |
| CN106017931A (en) * | 2016-07-18 | 2016-10-12 | 上海交通大学 | Device and method for testing lubrication performance of water-lubricated bearing under working condition of axis misalignment |
| CN106425635A (en) * | 2016-12-15 | 2017-02-22 | 常州机电职业技术学院 | Electric spindle based on dynamic pressure sliding bearing |
| CN107462419A (en) * | 2017-08-16 | 2017-12-12 | 无锡锡压压缩机有限公司 | A kind of property test platform for water-lubricated dynamic thrust-journal plain bearing |
-
2018
- 2018-08-16 CN CN201810934663.9A patent/CN109238697B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101876590A (en) * | 2009-12-04 | 2010-11-03 | 华中科技大学 | Comprehensive performance test table for water-lubricated dynamic-static pressure radial sliding bearing |
| CN105259099A (en) * | 2015-10-26 | 2016-01-20 | 东南大学 | Superspeed water lubrication bearing cavitation erosion testing device |
| CN105403408A (en) * | 2015-12-01 | 2016-03-16 | 哈尔滨电机厂有限责任公司 | Bidirectional-loading double-turning water-lubrication thrust bearing testing apparatus with pretightening force |
| CN106017931A (en) * | 2016-07-18 | 2016-10-12 | 上海交通大学 | Device and method for testing lubrication performance of water-lubricated bearing under working condition of axis misalignment |
| CN106425635A (en) * | 2016-12-15 | 2017-02-22 | 常州机电职业技术学院 | Electric spindle based on dynamic pressure sliding bearing |
| CN107462419A (en) * | 2017-08-16 | 2017-12-12 | 无锡锡压压缩机有限公司 | A kind of property test platform for water-lubricated dynamic thrust-journal plain bearing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115694050A (en) * | 2022-12-28 | 2023-02-03 | 合力（天津）能源科技股份有限公司 | Special motor structure in oil pit |
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| CN109238697B (en) | 2020-10-16 |
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Granted publication date: 20201016 |