CN110243604A - A kind of intershaft bearing vibration testing device - Google Patents
A kind of intershaft bearing vibration testing device Download PDFInfo
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- CN110243604A CN110243604A CN201910646271.7A CN201910646271A CN110243604A CN 110243604 A CN110243604 A CN 110243604A CN 201910646271 A CN201910646271 A CN 201910646271A CN 110243604 A CN110243604 A CN 110243604A
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- 238000012360 testing method Methods 0.000 title claims abstract description 90
- 238000004088 simulation Methods 0.000 claims abstract description 19
- 238000009958 sewing Methods 0.000 claims abstract description 13
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 238000011068 loading method Methods 0.000 claims description 42
- 210000004907 gland Anatomy 0.000 claims description 36
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 19
- 238000005119 centrifugation Methods 0.000 claims description 18
- 230000008878 coupling Effects 0.000 claims description 17
- 238000010168 coupling process Methods 0.000 claims description 17
- 238000005859 coupling reaction Methods 0.000 claims description 17
- 240000002853 Nelumbo nucifera Species 0.000 claims description 6
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims description 6
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims description 6
- 239000011888 foil Substances 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 238000010998 test method Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 9
- 238000005096 rolling process Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000002955 isolation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010053615 Thermal burn Diseases 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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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
- G01M13/045—Acoustic or vibration analysis
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The present invention provides a kind of intershaft bearing vibration testing devices comprising test sewing platform base, high pressure rotor system, low pressure rotor system, test macro, load simulator and temperature environment simulation device；High pressure rotor system and low pressure rotor system are for rotating the inside and outside lasso of intershaft bearing at different rates；Test macro is used for the vibration signal tested transmission, acquire intershaft bearing；Load simulator is for simulating the centrifugal load and radial load that intershaft bearing is subject to；Temperature environment simulation device is used to simulate the hot environment of intershaft bearing.Intershaft bearing vibration testing device provided by the invention realizes the simulation of intershaft bearing temperature environment, load characteristic, other component agency bearing vibration signal is avoided to interfere simultaneously, the itd is proposed direct test bearing ontology Internal and external cycle surface vibration of intershaft bearing test method, can effectively analyze intershaft bearing ontology vibration performance.
Description
Technical field
The invention belongs to rolling bearing test field more particularly to a kind of intershaft bearing vibration testing devices.
Background technique
Intershaft bearing in high temperature, high revolving speed, is answered for connecting, supporting aero-engine low pressure rotor and high pressure rotor
In miscellaneous load environment, often occurs vibrating excessive or cross the failures such as thermal burn, have become aero-engine weak link.Intermediary
Internal and external cycle rotates simultaneously when bearing working, and it is greatly poor that the single inner ring or single outer ring rotation of vibration characteristics and traditional bearing exist
Not, furthermore intershaft bearing is in a hot environment, and operating temperature is up to 150 DEG C or more, and temperature change can also cause bearing to shake
Dynamic characteristic variation, while the radial force that rotor-support-foundation system gravity and rotor blade generate affects the carrying of intershaft bearing roll inside
Region and each roller load also will affect bear vibration characteristic, need to consider that Internal and external cycle rotation, temperature and load are come
Carry out intershaft bearing vibration test, therefore there is an urgent need to a kind of with temperature environment and load simulated intershaft bearing vibratility
It can experimental rig.
Currently, although some producers or expert propose some intershaft bearing vibration-testing testing stands.Such as patent: a kind of
Vibration testing device (201724799 U of CN), the Birotor fault simulation experiment device (CN of inner and outer rotors system
103759934 B), aero-engine intershaft bearing fault detection method and detection device (105651515 B of CN) above patent
It is all the vibration signal installed vibrating sensor on testing stand top chock and measure intershaft bearing, test signal has very big mistake
Difference, while the vibrations such as other devices of testing stand such as shaft coupling, support rolling bearing can interfere the vibration of intershaft bearing, influence to vibrate
The accuracy of signal acquisition.Aero-engine simulating table (C is designed as patent is based on birotor reduced mechanism
N20151081686), aero-engine intershaft bearing birotor testing stand loading method (105841960 B of CN) support uses
Rolling bearing, being connected between motor and rotor using shaft coupling, does not account for the measure of vibration isolation.And the above stub
It holds testing stand and can not achieve intershaft bearing and simulate under high temperature environment.
In addition, the generally existing following problems of current intershaft bearing exerciser: (1) being difficult to simulate complicated load and high temperature work
Make environment.(2) vibration isolation measure is not used, as spring bearing is connected using rolling bearing or motor and rotor using shaft coupling
It connects, the vibration inside motor passes to rotor-support-foundation system, and there are a large amount of interference signals for vibration acquisition data.(3) it is not avoided that and draws
Enter effectively to apply radial load to bearing under conditions of interference signal and need additionally to increase since intermediary's Internal and external cycle rotates simultaneously
Transition rolling bearing applies radial load, but also will increase rolling bearing and generate interference signal.(4) intershaft bearing vibration-testing is more
It is test bearing seat to characterize, arrives intershaft bearing ontology without directly test, and the vibration of real process intershaft bearing is transmitted to
Bearing block causes vibration signal to change there are complex transfer path, cannot effectively analyze the vibration performance of intershaft bearing.
Summary of the invention
Present invention seek to address that above-mentioned deficiency in the prior art, a kind of intershaft bearing vibration testing device is proposed, in realization
The simulation of Jie's bearing temperature environment, load characteristic, while other component agency bearing vibration signal being avoided to interfere, it proposes
It is special can effectively to analyze the vibration of intershaft bearing ontology for the direct test bearing ontology Internal and external cycle surface vibration of Jie's bearing test method
Sign.
The technical solution of the present invention is as follows:
A kind of intershaft bearing vibration testing device, the intershaft bearing vibration testing device include test sewing platform base 1, height
Press rotor-support-foundation system 2, low pressure rotor system 4, test macro 5, load simulator 6 and temperature environment simulation device 7, the height
Pressure rotor-support-foundation system 2, low pressure rotor system 4, test macro 5, load simulator 6 and temperature environment simulation device 7 are set to examination
It tests on sewing platform base 1；The high pressure rotor system 2 and low pressure rotor system 4 is for making the inside and outside lasso of intershaft bearing 3 with not
Same speed rotation；The test macro 5 is used for the vibration signal tested transmission, acquire intershaft bearing 3；Load simulator
6 for simulating the centrifugal load and radial load that intershaft bearing 3 is subject to；The temperature environment simulation device 7 is in simulation
The hot environment of Jie's bearing 3；Wherein:
The high pressure rotor system 2 includes high speed shaft driving motor 21, high speed shaft flexible clutch 22, first sliding axle
It holds 23, high speed shaft 24, outer ring gland 25, first sliding axle and holds seat 26 and high speed shaft driving motor pedestal 27；High speed shaft driving electricity
The upper surface that machine base 27 and first sliding axle hold seat 26 is separately connected high speed shaft driving motor 21 and first sliding axle holds 23, height
The lower surface that fast axis driving motor pedestal 27 and first sliding axle hold seat 26 is connect with test sewing platform base 1；First sliding axle holds 23
It is used to support high speed shaft 24, the high speed shaft flexible clutch 22 is by the driving shaft of high speed shaft driving motor 21 and high speed shaft 24
One end connection；Outer ring gland 25 is connected and fixed on the other end of high speed shaft 24, for compressing the outer ring of intershaft bearing 3, makes
3 outer ring of Jie's bearing is rotated synchronously with high speed shaft 24；The outer ring gland 25 is opened in its inner ring surrounding there are four rectangle slot；
The high speed shaft 24 is hollow shaft, offers high speed shaft front end through-hole 241 and high speed shaft rear end through-hole respectively on the side wall of both ends
242, high speed shaft front end through-hole 241 and high speed shaft rear end through-hole 242 and hollow shaft form access；
The low pressure rotor system 4 includes slow-speed shaft driving motor 41, slow-speed shaft flexible clutch 42, third sliding axle
Hold 43, slow-speed shaft 44, second sliding axle holds 45, inner ring gland 46, second sliding axle holds seat 47, third plain bearing housing 48 and low
Fast axis driving motor pedestal 49；The slow-speed shaft driving motor pedestal 49, second sliding axle hold seat 47 and third sliding bearing
The upper surface of seat 48 is separately connected slow-speed shaft driving motor 41, second sliding axle holds 45 and third sliding bearing 43；Second sliding
Bearing 45 and third sliding bearing 43 are used to support entire low pressure rotor system 4；The slow-speed shaft flexible clutch 42 will be low
The driving shaft of fast axis driving motor 41 is connect with one end of slow-speed shaft 44, and the other end of slow-speed shaft 44 connects inner ring gland 46,
The inner ring for pushing down intershaft bearing 3 rotates synchronously 3 inner ring of intershaft bearing with low pressure rotor system 4；The slow-speed shaft 44 is sky
Mandrel, one end side wall of slow-speed shaft 44 offer slow-speed shaft front end through-hole 441, offer rectangle slot on other end side wall,
Slow-speed shaft front end through-hole 441, rectangle slot and the hollow shaft of slow-speed shaft 44 form access；On the inner ring gland 46, with
The rectangle slot corresponding position of slow-speed shaft 44 is provided with an equal amount of rectangle slot；
The test macro 5 includes slow-speed shaft electric slip ring 51, high speed shaft electric slip ring 52, acquisition device 53, computer 54, interior
Coil sensor 55 and outer coil sensor 56；The slow-speed shaft electric slip ring 51 is arranged in slow-speed shaft shaft coupling 42 and slow-speed shaft front end
Between through-hole 441, and it is fixed on slow-speed shaft 44；The foil gauge of interior coil sensor 55 is arranged on the inner ring of intershaft bearing 3, wears
The rectangle slot for crossing inner ring gland 46 and slow-speed shaft 44 is worn into 44 hollow shaft of slow-speed shaft by slow-speed shaft front end through-hole 441
Out and access in the inner ring lead of slow-speed shaft electric slip ring 51；High speed shaft electric slip ring 52 is arranged in high speed shaft shaft coupling 22 and high speed shaft
It between front end through-hole 241, and is fixed on high speed shaft 24, the outer ring of intershaft bearing 3 is arranged in the foil gauge of outer coil sensor 56
On, across the rectangle slot of outer ring gland 25, it is then passed through high speed shaft rear end through-hole 242, into 24 hollow shaft of high speed shaft, by
High speed shaft front end through-hole 241 is pierced by and is accessed in the inner ring lead of high speed shaft electric slip ring 52；Measurement circuit is from slow-speed shaft electric slip ring
51 and high speed shaft electric slip ring 52 outer ring draw, be connected on acquisition device 53, finally access computer 54；
The load simulator 6 includes centrifugal load loading device 61 and radial load loading device 62；Centrifugation carries
There are lotus loading device 61 multiple centrifugation loading discs to be individually fixed on high speed shaft 24 and slow-speed shaft 44, and being centrifuged on loading disc has
Multiple holes are carried for amount of unbalance to be arranged by changing the unbalance mass, of centrifugation loading disc to simulate the centrifugation of intershaft bearing 3
Lotus；Radial load loading device 62 is mounted on the top of test sewing platform base 1, and corresponding with centrifugation loading disc position, radial to carry
There are gap between lotus loading device 62 and centrifugation loading disc, radial load loading device 62 is the load of contactless electromagnetism, is passed through
The size of current for changing electromagnetic loading device changes the size of radial load.
The temperature environment simulation device 7 is split left and right formula structure comprising incubator 71 and is set to incubator
Resistive heater 72 inside 71, the front-rear side walls of incubator 71 offer through-hole, are used for high pressure rotor system 2 and low pressure rotor
System 4 passes through, and intershaft bearing 3 is contained in incubator 71, simulates the working condition in a high temperauture environment of intershaft bearing 3.
Further, the first sliding axle hold 23, second sliding axle hold 45 and third sliding bearing 43 be sliding
Bearing, to avoid interference 3 test frequency of intershaft bearing.
Further, the high speed shaft flexible clutch 22 and slow-speed shaft flexible clutch 42 only transmit torque, do not pass
Radial vibration is passed, the vibration for high speed shaft driving motor 21 and slow-speed shaft driving motor 41 to be isolated passes to intershaft bearing 3.
Further, the high speed shaft flexible clutch 22 has tongue on one side, which covers in one end of high speed shaft 24,
And be bolted, it is fixed on high speed shaft 24.
Further, the slow-speed shaft flexible clutch 42 has tongue on one side, and tongue is covered in the front end of slow-speed shaft 44, and
It is bolted, is fixed on slow-speed shaft 44.
The invention has the advantages that:
1) intershaft bearing vibration testing device provided by the invention uses flexible clutch and sliding bearing, realizes vibration
Dynamic isolation avoids drive system, support device vibration agency bear vibration interference；
2) intershaft bearing vibration testing device provided by the invention is load simulated using centrifugation loading disc and electromagnetism load
Device interferes during avoiding radial load from applying；
3) intershaft bearing vibration testing device sensor provided by the invention can be directly arranged in intershaft bearing ontology
Outer ring effectively obtains intershaft bearing vibration signal；
4) intershaft bearing vibration testing device provided by the invention simulates intershaft bearing work using temperature environment simulation device
Hot environment when making.
Detailed description of the invention
Fig. 1: intershaft bearing vibration testing device overall construction drawing；
Fig. 2: intershaft bearing vibration testing device high pressure rotor system main view；
Fig. 3 (a): intershaft bearing vibration testing device high-speed shaft structure three-dimensional explosive view；
Fig. 3 (b): intershaft bearing vibration testing device high-speed shaft structure cross-sectional view；
Fig. 3 (c): intershaft bearing vibration testing device outer ring gland structure main view；
Fig. 3 (d): intershaft bearing vibration testing device outer ring gland structure left view；
Fig. 4: intershaft bearing vibration testing device low pressure rotor system main view；
Fig. 5 (a): intershaft bearing vibration testing device slow-speed shaft structure three-dimensional explosive view；
Fig. 5 (b): intershaft bearing vibration testing device slow-speed shaft structure sectional view；
Fig. 6 (a): intershaft bearing vibration testing device test macro main view；
Fig. 6 (b): intershaft bearing vibration testing device test macro cross-sectional view；
Fig. 6 (c): intershaft bearing vibration testing device intershaft bearing inner ring sensor mounting location figure；
Fig. 6 (d): intershaft bearing vibration testing device intershaft bearing outer ring sensor mounting location figure；
Fig. 7: intershaft bearing vibration testing device load simulator main view；
Fig. 8: intershaft bearing vibration testing device temperature environment simulation device overall construction drawing.
In figure: 1 test sewing platform base；2 high pressure rotor systems；3 intershaft bearings；4 low pressure rotor systems；5 test macros；6 carry
Lotus simulator；7 temperature environment simulation devices；21 high speed shaft driving motors；22 high speed shaft flexible clutch；23 first sliding axles
It holds；24 high speed shafts；25 outer ring glands；26 first sliding axles hold seat；27 high speed shaft driving motor pedestals；241 high speed shaft front ends are logical
Hole；242 high speed shaft rear end through-holes；41 slow-speed shaft driving motors；42 slow-speed shaft flexible clutch；43 third sliding bearings；44 is low
Fast axis；45 second sliding axles are held；46 inner ring glands；47 second sliding axles hold seat；48 third plain bearing housings；The driving of 49 slow-speed shafts
Motor base；441 slow-speed shaft front end through-holes；51 slow-speed shaft electric slip rings；52 high speed shaft electric slip rings；53 acquisition devices；54 computers；55
Interior coil sensor；56 outer coil sensors；61 centrifugal load loading devices；62 radial load loading devices；71 incubators；72 heating
Resistance wire.
Specific embodiment
Below in conjunction with attached drawing and technical solution, a specific embodiment of the invention is further illustrated.
It is to be appreciated that appended attached drawing is not proportionally drawn, and merely to illustrating each of basic principle of the invention
The suitably simplified technique of painting of kind feature.The specific design feature of invention disclosed herein include for example specific size, direction,
Position and shape will be partly determined by the specific application and use environment.
In appended multiple attached drawings, same or equivalent component (element) is with the index of identical appended drawing reference.
In the description of the present invention, it should be noted that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.
In conjunction with Fig. 1, intershaft bearing vibration testing device includes test sewing platform base 1, high pressure rotor system 2, low pressure rotor system
System 4, test macro 5, load simulator 6, temperature environment simulation device 7.Test sewing platform base 1 is used to support and installation fixes it
His experimental rig.High pressure rotor system 2, low pressure rotor system 4 are for revolving the inside and outside lasso of intershaft bearing 3 at different rates
Turn.Intershaft bearing 3 is subject bearing.Test macro 5 is used for the vibration signal tested transmission, acquire intershaft bearing 3.It is load simulated
Device 6 is for simulating the centrifugal load and radial load that intershaft bearing 3 is subject to.Temperature environment simulation device 7 is for simulating intermediary
The hot environment of bearing 3.
Fig. 2 is the installation of the driving device of high pressure rotor system, attachment device, support device and clamping device, arrangement.Knot
Fig. 2 is closed, high pressure rotor system 2 holds 23, height including high speed shaft driving motor 21, high speed shaft flexible clutch 22, first sliding axle
Fast axis 24, outer ring gland 25, first sliding axle hold seat 26, high speed shaft driving motor pedestal 27.High speed shaft driving motor pedestal 27
The fixed high speed shaft driving motor 21 of installation and the first sliding are bolted respectively with the upper surface that first sliding axle holds seat 26
Bearing 23.The lower surface that high speed shaft driving motor pedestal 27 and first sliding axle hold seat 26 is connect with test sewing platform base 1.High speed shaft
Driving motor 21 is used to drive the rotation of high pressure rotor system 2.First sliding axle holds 23 and is used to support high speed shaft 24, herein with cunning
Rolling bearing before dynamic bearing replacement avoids test process support rolling bearing vibration frequency that intershaft bearing 3 can be interfered to test
Frequency.The driving shaft of high speed shaft driving motor 21 connects installation high speed shaft flexible clutch 22 by flat key, soft by high speed shaft
The driving shaft of high speed shaft driving motor 21 is connect by property shaft coupling 22 with one end of high speed shaft 24.High speed shaft flexible clutch 22
Torque is transmitted, does not transmit radial vibration, the vibration for high speed shaft driving motor 21 to be isolated passes to intershaft bearing 3, reduces it
The interference of 3 vibration-testing of vibration frequency agency bearing.The other end for being fixed on high speed shaft 24 is bolted in outer ring gland 25,
That is 2 end of high pressure rotor system turns 3 outer ring of intershaft bearing with high speed shaft 24 is synchronous for compressing the outer ring of intershaft bearing 3
It is dynamic.By control 21 revolving speed of high speed shaft driving motor in test, control 3 outer ring revolving speed of intershaft bearing is realized.
Fig. 3 (a), Fig. 3 (b), Fig. 3 (c) and Fig. 3 (d) are the structure feature schematic diagram of high speed shaft 24 and outer ring gland 25.Knot
Fig. 3 (a), Fig. 3 (b) are closed, high speed shaft flexible clutch 22 has tongue on one side, which covers in the front end of high speed shaft 24, and passes through
It is bolted, is fixed on high speed shaft 24.The high speed shaft 24 is hollow shaft.On the front-end and back-end side wall of high speed shaft 24 respectively
It is provided with an equal amount of high speed shaft front end through-hole 241 and high speed shaft rear end through-hole 242.The high speed shaft front end through-hole of high speed shaft 24
241 and high speed shaft rear end through-hole 242 and hollow shaft form access.In conjunction with Fig. 3 (a), Fig. 3 (c) and Fig. 3 (d), the outer ring gland
25 open in its inner ring surrounding there are four rectangle slot, and the vertical height of slot is higher than the internal diameter of 3 outer ring of intershaft bearing.Dress
Grooved hole is arranged in timing, one end that high speed shaft 24 connects outer ring gland 25, and 3 outer ring of intershaft bearing is packed into the slot of 24 end of high speed shaft
In hole.Outer ring gland 25 is circular ring shape, and outer ring gland 25 is connect by bolt with the end face of high speed shaft 24, tightly to push down intermediary
The outer ring of bearing 3.
Fig. 4 is the installation of the driving device of low pressure rotor system, attachment device, support device and clamping device, arrangement.Knot
Close Fig. 4, low pressure rotor system 4 includes slow-speed shaft driving motor 41, slow-speed shaft flexible clutch 42, third sliding bearing 43, low
Fast axis 44, second sliding axle hold 45, inner ring gland 46, second sliding axle holds seat 47, third plain bearing housing 48 and slow-speed shaft drive
Dynamic motor base 49.Low pressure rotor system 4 is in the installation of driving, connection and support device and function and 2 phase of high pressure rotor system
It is similar.Slow-speed shaft driving motor pedestal 49, second sliding axle hold seat 47 and the upper surface of third plain bearing housing 48 uses respectively
It is bolted that installation secures slow-speed shaft driving motor 41, second sliding axle holds 45 and third sliding bearing 43.Slow-speed shaft driving
Motor 41 is used to drive the rotation of low pressure rotor system 4.Two sliding bearings functionally hold 23 identical, use with first sliding axle
In supporting entire low pressure rotor system 4, the interference of agency bearing inner race vibration frequency is reduced.The master of slow-speed shaft driving motor 41
Moving axis connects installation slow-speed shaft flexible clutch 42 by flat key.Slow-speed shaft flexible clutch 42 is functionally flexible with high speed shaft
Shaft coupling 22 is identical, reduces the interference of 3 inner ring of agency bearing vibration.44 rear end of slow-speed shaft, which is connected through a screw thread, is mounted with inner ring
Gland 46 tightly suppresses the inner ring of intershaft bearing 3, rotates synchronously 3 inner ring of intershaft bearing with low pressure rotor system 4.Pass through control
The revolving speed of 41 revolving speed of slow-speed shaft driving motor control, 3 inner ring of intershaft bearing processed.
Fig. 5 (a), Fig. 5 (b) are the structure feature schematic diagram of slow-speed shaft 44 and inner ring gland 46.In conjunction with Fig. 5 (a), Fig. 5
(b), slow-speed shaft 44 is similar with 24 structure feature of high speed shaft.Slow-speed shaft flexible clutch 42 has tongue on one side, and tongue is covered in low speed
The front end of axis 44, and be bolted, it is fixed on slow-speed shaft 44.Slow-speed shaft 44 is hollow shaft.It opens the front end of slow-speed shaft 44
There is slow-speed shaft front end through-hole 441, rear end is provided with rectangle slot.The slow-speed shaft front end through-hole 441 of 44 front end of slow-speed shaft, rear end
Slot and hollow axis hole form access.An equal amount of length is provided at 44 rear end same position of the inner ring gland 46 and slow-speed shaft
Rectangular slot.When assembly, snare is fixed and clamped on the axis of 44 end of slow-speed shaft and using inner ring gland 46 in intershaft bearing 3,
The position of the rectangle slot of the rectangle slot and slow-speed shaft 44 of inner ring gland 46 is corresponding, and inner ring gland 46 is connected by screw thread
The end face of slow-speed shaft 44 is connect, tightly to push down 3 inner ring of intershaft bearing.
It include slow-speed shaft electric slip ring 51, high speed shaft electricity in conjunction with Fig. 6 (a), Fig. 6 (b), Fig. 6 (c) and Fig. 6 (d) test macro 5
Slip ring 52, acquisition device 53, computer 54, interior coil sensor 55 and outer coil sensor 56.Slow-speed shaft electric slip ring 51 is mounted on low speed
Between the slow-speed shaft front end through-hole 441 of 44 front end of axis shaft coupling 42 and slow-speed shaft, and it is fixed on slow-speed shaft 44.Interior coil sensor
55 foil gauge is mounted on the inner ring of intershaft bearing 3, in the rectangle slot of 44 rear end of inner ring gland 46 and slow-speed shaft,
Into in 44 hollow shaft of slow-speed shaft, it is pierced by the slow-speed shaft front end through-hole 441 of 44 front end of slow-speed shaft and accesses slow-speed shaft electric slip ring 51
Inner ring lead in.High speed shaft electric slip ring 52 is mounted on the high speed shaft front end through-hole of high speed shaft shaft coupling 22 and high speed shaft front end
Between 241, and it is fixed on high speed shaft 24.The foil gauge of outer coil sensor 56 is mounted on the outer ring of intershaft bearing 3, is passed through outer
The slot of gland 25 is enclosed, the high speed shaft rear end through-hole 242 for being then passed through 24 rear end of high speed shaft is worn into 24 hollow shaft of high speed shaft
It the high speed shaft front end through-hole 241 of 24 front end of high speed shaft and accesses in the inner ring lead of high speed shaft electric slip ring 52 out.Measurement circuit from
The outer ring of slow-speed shaft electric slip ring 51 and high speed shaft electric slip ring 52 is drawn, and is connected on acquisition device 53, and computer 54 is finally accessed.Work
When, high pressure rotor system 2, low pressure rotor system 4 drive the Internal and external cycle of intershaft bearing 3, the inner ring of slow-speed shaft electric slip ring 51, high speed
Inner ring, measurement circuit, interior coil sensor 55, the outer coil sensor 56 of axis electric slip ring 52 rotate synchronously, while slow-speed shaft electric slip ring
51 outer ring, the outer ring of high speed shaft electric slip ring 52 do not rotate.The inner ring of the inner ring of slow-speed shaft electric slip ring 51, high speed shaft electric slip ring 52
The vibration signal of intershaft bearing 3 is respectively transmitted to the outer ring of slow-speed shaft electric slip ring 51, the outer ring of high speed shaft electric slip ring 52, and will
The signal of acquisition is passed to acquisition device 53 again, finally shows in computer 54, is analyzed and handled.
In conjunction with Fig. 7, load simulator 6 includes centrifugal load loading device 61, radial load loading device 62.Centrifugation carries
There are lotus loading device 61 multiple centrifugation loading discs to be individually fixed on high speed shaft 24 and slow-speed shaft 44, and being centrifuged on loading disc has
Multiple holes, for amount of unbalance to be arranged.Radial load loading device 62 is mounted on the top of test sewing platform base 1, and adds with centrifugation
Load plate is corresponding, and there are gaps between radial load loading device 62 and centrifugation loading disc.Centrifugal load loading device 61 passes through change
The unbalance mass, of loading disc is centrifuged to simulate the centrifugal load of intershaft bearing 3.Radial load loading device 62 is contactless
Electromagnetism load, the size of current by changing electromagnetic loading device change the size of radial load, and electromagnetic loading device is non-contact
Formula load avoids the vibration of agency bearing 3 in loading procedure from generating interference, and radial load loading device 62 can be along shaft axial direction
It is mobile, it is moved on different loading discs, simulates different loads position load.
In conjunction with Fig. 8, temperature environment simulation device 7 is split left and right formula structure, is facilitated by the installation of test specimen；Temperature environment mould
Quasi- device 7 includes incubator 71 and resistive heater 72, and two incubators 71 of left and right link into an integrated entity, the front and rear sides of incubator 71
Wall has through-hole, and there are gaps with high pressure rotor system 2 and low pressure rotor system 4, turn for high pressure rotor system 2 and low pressure
Subsystem 4 passes through, and intershaft bearing 3 is contained in incubator 71, and heating device is collectively formed.Resistive heater 72 is controlled to send out
Heat reaches intershaft bearing 3 and needs analog temperature, simulates the working condition in a high temperauture environment of intershaft bearing 3.
The description that foregoing exemplary embodiment is presented is merely illustrative of the technical solution of the present invention, and is not intended to become
Without missing, it is also not intended to limit the invention to described precise forms.Obviously, those skilled in the art's root
Many changes are made according to above-mentioned introduction and variation is all possible.The exemplary embodiment was chosen and described for the sake of explanations
Certain principles and practical application of the invention, so that others skilled in the art are easy to understand, realize and utilize
Various illustrative embodiments of the invention and its various selection forms and modification.Protection scope of the present invention is intended to by institute
Attached claims and its equivalents are limited.
Claims (8)
1. a kind of intershaft bearing vibration testing device, which is characterized in that the intershaft bearing vibration testing device includes test
Sewing platform base (1), high pressure rotor system (2), low pressure rotor system (4), test macro (5), load simulator (6) and temperature ring
Border simulator (7), the high pressure rotor system (2), low pressure rotor system (4), test macro (5), load simulator
(6) it is set in test sewing platform base (1) with temperature environment simulation device (7)；The high pressure rotor system (2) and low pressure rotor
System (4) is for rotating the inside and outside lasso of intershaft bearing (3) at different rates；The test macro (5) is for testing
The vibration signal of transmission, acquisition intershaft bearing (3)；Load simulator (6) is used to simulate the centrifugation that intershaft bearing (3) is subject to and carries
Lotus and radial load；The temperature environment simulation device (7) is used to simulate the hot environment of intershaft bearing (3)；Wherein:
The high pressure rotor system (2) includes high speed shaft driving motor (21), high speed shaft flexible clutch (22), the first sliding
Bearing (23), high speed shaft (24), outer ring gland (25), first sliding axle hold seat (26) and high speed shaft driving motor pedestal (27)；
The upper surface that high speed shaft driving motor pedestal (27) and first sliding axle hold seat (26) is separately connected high speed shaft driving motor (21)
It is held (23) with first sliding axle, high speed shaft driving motor pedestal (27) and first sliding axle hold lower surface and the testing stand of seat (26)
Pedestal (1) connection；First sliding axle is held (23) and is used to support high speed shaft (24), and the high speed shaft flexible clutch (22) will be high
The driving shaft of fast axis driving motor (21) is connect with one end of high speed shaft (24)；Outer ring gland (25) is connected and fixed on high speed shaft
(24) the other end rotates synchronously intershaft bearing (3) outer ring with high speed shaft (24) for compressing the outer ring of intershaft bearing (3)；
The outer ring gland (25) is opened in its inner ring surrounding there are four rectangle slot；The high speed shaft (24) is hollow shaft, both ends
High speed shaft front end through-hole (241) and high speed shaft rear end through-hole (242), high speed shaft front end through-hole (241) are offered on side wall respectively
Access is formed with high speed shaft rear end through-hole (242) and hollow shaft；
The low pressure rotor system (4) includes slow-speed shaft driving motor (41), slow-speed shaft flexible clutch (42), third sliding
Bearing (43), slow-speed shaft (44), second sliding axle hold (45), inner ring gland (46), second sliding axle hold seat (47), third sliding
Bearing block (48) and slow-speed shaft driving motor pedestal (49)；The slow-speed shaft driving motor pedestal (49), second sliding axle are held
Seat (47) and the upper surface of third plain bearing housing (48) is separately connected slow-speed shaft driving motor (41), second sliding axle holds (45)
With third sliding bearing (43)；Second sliding axle holds (45) and third sliding bearing (43) is used to support entire low pressure rotor system
(4)；The slow-speed shaft flexible clutch (42) is by one end of the driving shaft of slow-speed shaft driving motor (41) and slow-speed shaft (44)
The other end of connection, slow-speed shaft (44) connects inner ring gland (46), pushes down the inner ring of intershaft bearing (3), makes intershaft bearing (3)
Inner ring is rotated synchronously with low pressure rotor system (4)；The slow-speed shaft (44) is hollow shaft, and one end side wall of slow-speed shaft (44) is opened
Equipped with slow-speed shaft front end through-hole (441), rectangle slot is offered on other end side wall, the slow-speed shaft front end of slow-speed shaft (44) is logical
Hole (441), rectangle slot and hollow shaft form access；Rectangle on the inner ring gland (46), with slow-speed shaft (44)
Slot corresponding position is provided with an equal amount of rectangle slot；
The test macro (5) includes slow-speed shaft electric slip ring (51), high speed shaft electric slip ring (52), acquisition device (53), computer
(54), interior coil sensor (55) and outer coil sensor (56)；The slow-speed shaft electric slip ring (51) is arranged in slow-speed shaft shaft coupling
(42) it between slow-speed shaft front end through-hole (441), and is fixed on slow-speed shaft (44)；The foil gauge of interior coil sensor (55) is arranged
On the inner ring of intershaft bearing (3), the rectangle slot of inner ring gland (46) and slow-speed shaft (44) is passed through, into slow-speed shaft (44)
In hollow shaft, it is pierced by by slow-speed shaft front end through-hole (441) and is accessed in the inner ring lead of slow-speed shaft electric slip ring (51)；High speed shaft electricity
Slip ring (52) is arranged between high speed shaft shaft coupling (22) and high speed shaft front end through-hole (241), and is fixed on high speed shaft (24),
The foil gauge of outer coil sensor (56) is arranged on the outer ring of intershaft bearing (3), passes through the rectangle slot of outer ring gland (25),
It is then passed through high speed shaft rear end through-hole (242), into high speed shaft (24) hollow shaft, is pierced by simultaneously by high speed shaft front end through-hole (241)
It accesses in the inner ring lead of high speed shaft electric slip ring (52)；Measurement circuit is from slow-speed shaft electric slip ring (51) and high speed shaft electric slip ring (52)
Outer ring draw, be connected on acquisition device (53), finally access computer (54)；
The load simulator (6) includes centrifugal load loading device (61) and radial load loading device (62)；Centrifugation
There are load charger (61) multiple centrifugation loading discs to be individually fixed on high speed shaft (24) and slow-speed shaft (44), centrifugation load
There are multiple holes on disk, for amount of unbalance to be arranged, simulate intershaft bearing by changing the unbalance mass, of centrifugation loading disc
(3) centrifugal load；Radial load loading device (62) be mounted on test sewing platform base (1) top, and with centrifugation loading disc position
Set corresponding, there are gap between radial load loading device (62) and centrifugation loading disc, radial load loading device (62) is non-
The load of contact electromagnetism, the size of current by changing electromagnetic loading device change the size of radial load；
The temperature environment simulation device (7) is split left and right formula structure comprising incubator (71) and is set to incubator
(71) internal resistive heater (72), the front-rear side walls of incubator (71) offer through-hole, for high pressure rotor system (2) and
Low pressure rotor system (4) passes through, and intershaft bearing (3) is contained in incubator (71), simulates intershaft bearing (3) in high temperature ring
Working condition under border.
2. intershaft bearing vibration testing device according to claim 1, which is characterized in that the first sliding axle is held
(23), it is sliding bearing that second sliding axle, which holds (45) and third sliding bearing (43), to avoid interference intershaft bearing (3) test
Frequency.
3. intershaft bearing vibration testing device according to claim 1 or 2, which is characterized in that the high speed shaft is flexible
Shaft coupling (22) and slow-speed shaft flexible clutch (42) only transmit torque, do not transmit radial vibration, for high speed shaft driving to be isolated
The vibration of motor (21) and slow-speed shaft driving motor (41) passes to intershaft bearing (3).
4. intershaft bearing vibration testing device according to claim 1 or 2, which is characterized in that the high speed shaft is flexible
Shaft coupling (22) has tongue on one side, which covers one end in high speed shaft (24), and is bolted, and is fixed on high speed shaft
(24) on.
5. intershaft bearing vibration testing device according to claim 3, which is characterized in that the high speed shaft flexible coupling
Device (22) has tongue on one side, which covers one end in high speed shaft (24), and is bolted, and is fixed on high speed shaft (24)
On.
6. according to claim 1, intershaft bearing vibration testing device described in 2 or 5, which is characterized in that the slow-speed shaft is soft
Property shaft coupling (42) has tongue on one side, and tongue covers the front end in slow-speed shaft (44), and is bolted, and is fixed on slow-speed shaft
(44) on.
7. intershaft bearing vibration testing device according to claim 3, which is characterized in that the slow-speed shaft flexible coupling
Device (42) has tongue on one side, and tongue covers the front end in slow-speed shaft (44), and is bolted, and is fixed on slow-speed shaft (44).
8. intershaft bearing vibration testing device according to claim 4, which is characterized in that the slow-speed shaft flexible coupling
Device (42) has tongue on one side, and tongue covers the front end in slow-speed shaft (44), and is bolted, and is fixed on slow-speed shaft (44).
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| CN111207925A (en) * | 2020-01-15 | 2020-05-29 | 江西宏伟轴承有限公司 | High-precision bearing noise detection device |
| CN112393905A (en) * | 2020-12-14 | 2021-02-23 | 大连工业大学 | Rolling bearing tester with external impact excitation |
| CN113653759A (en) * | 2021-08-23 | 2021-11-16 | 上海交通大学 | Active and passive vibration reduction supporting device for shafting transverse vibration transmission control |
| CN113899539A (en) * | 2021-09-30 | 2022-01-07 | 清华大学 | Dual-rotor bearing cartridge receiver experiment system |
| CN114216678A (en) * | 2021-12-01 | 2022-03-22 | 中国科学院工程热物理研究所 | High-speed bearing tester of aviation power |
| CN114397104A (en) * | 2022-01-21 | 2022-04-26 | 广东电网有限责任公司 | Slide rail type superconducting motor rotor test platform |
| CN116625478A (en) * | 2023-07-21 | 2023-08-22 | 同日智能科技(徐州)有限公司 | Vibration testing equipment for gear motor |
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| CN113653759A (en) * | 2021-08-23 | 2021-11-16 | 上海交通大学 | Active and passive vibration reduction supporting device for shafting transverse vibration transmission control |
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| CN114397104A (en) * | 2022-01-21 | 2022-04-26 | 广东电网有限责任公司 | Slide rail type superconducting motor rotor test platform |
| CN116625478A (en) * | 2023-07-21 | 2023-08-22 | 同日智能科技(徐州)有限公司 | Vibration testing equipment for gear motor |
| CN116625478B (en) * | 2023-07-21 | 2023-11-07 | 同日智能科技(徐州)有限公司 | Vibration testing equipment for gear motor |
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Inventor after: Wen Baogang Inventor after: Yan Jingxiang Inventor after: Zhang Xu Inventor after: Yang Lei Inventor after: Pang Guibing Inventor after: Tao Xueheng Inventor after: Liu Yang Inventor before: Wen Baogang Inventor before: Zhang Xu Inventor before: Yang Lei Inventor before: Pang Guibing Inventor before: Tao Xueheng Inventor before: Liu Yang |
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Effective date of registration: 20210128 Address after: 252600 Tangyuan Industrial Park, Linqing City, Liaocheng City, Shandong Province Patentee after: SHANDONG CAMERY (KMR) BEARING SCIENCE & TECHNOLOGY Co.,Ltd. Patentee after: SHANDONG JI'ENNA MECHANICAL ENGINEERING TECHNOLOGY Co.,Ltd. Address before: 116034 No. 1 light industry garden, Ganjingzi District, Liaoning, Dalian Patentee before: DALIAN POLYTECHNIC University |