CN104964824B - The aeroplane engine main bearing exerciser with outer casing is supported with turbine - Google Patents
The aeroplane engine main bearing exerciser with outer casing is supported with turbine Download PDFInfo
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- CN104964824B CN104964824B CN201510370314.5A CN201510370314A CN104964824B CN 104964824 B CN104964824 B CN 104964824B CN 201510370314 A CN201510370314 A CN 201510370314A CN 104964824 B CN104964824 B CN 104964824B
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Abstract
The aeroplane engine main bearing exerciser with outer casing is supported with turbine, belongs to aero-engine key part and component experimental technique field.The true parts of aero-engine are merged；The vibration transmission path of engine completely is remained in structure；Include outer ring shafting and inner ring shafting；Outer ring shafting uses engine entity structure form as aiding support, inner ring bearing support；The driving bracing strut of inner ring shafting can be moved back and forth；Using special full basin lubricating oil debris sensor and high frequency vibration transducer, studied with the vibration transfer law of the state of health monitoring and test bearing of supportive test bearing to outer casing.
Description
Technical field
The present invention relates to it is a kind of with engine spare part, possess the main shaft of intermediary base bearing complex vibration transmission path simulation
Testing equipment is held, belongs to aero-engine key part and component experimental technique field.
Background technology
Aero-engine intermediary base bearing is very special, the very crucial base bearing of a class on modern fanjet,
Internal and external cycle rotation at a high speed, inner ring rotates at a high speed with low pressure rotor, and outer ring rotates at a high speed with high pressure rotor, due to while supporting high tension
Rotor and low pressure rotor, intermediary's base bearing once fail can directly result in engine rotor seize, off-axis, engine is lost dynamic
Power, or even plague grade accident, it, which endangers, is significantly larger than general base bearing, and therefore, being highly desirable to research, it is in rolling contact
Fatigue failure mechanism and dither and lubricating oil chip surveillance technology.Domestic existing intermediary's base bearing exerciser is only with single set
Intermediary's base bearing carries out rotating speed and loading analog test on twin shaft testing machine, and this exerciser is only with true intermediary's main shaft
Hold, do not possess complex vibration transmission path Research Ability, it is larger with intermediary base bearing military service operating mode gap.Therefore, retain therefrom
Jie's base bearing → low-pressure shaft rear fulcrum → squeeze film shock absorber → Bearing Casing → turbine supporting → blender → eccentric wheel and
The complete vibration transmission path of sliding block → outer casing so that the simulated test operating mode of intermediary's base bearing as far as possible with actual military service work
Condition unanimously has important value, monitors that the dither surveillance technology of base bearing and vibration are passed from outer casing particularly with research
Sensor type selecting and layout have important references.
The content of the invention
It is an object of the invention to provide a kind of aero-engine with simulation intermediary base bearing complex vibration transmission path
Base bearing exerciser, in addition to it can carry out the performance simulation of engine intermediary base bearing and test, can also carry out in aero-engine
Jie's base bearing dither, which is monitored, lubricating oil chip surveillance technology is studied, possess variable speed, varying load accelerated test, lubricating oil heats,
Lubricating oil supply oil return and lubricating system analog capability, available for aero-engine intermediary base bearing rolling contact fatigue study mechanism,
Failure procedure law study and pre- with enhancing, Incipient Fault Diagnosis, failure as the separation of intermediary base bearing Vibration Signal in Frequency Domain
Survey the support platform of technique study.
The technical scheme is that：
The aeroplane engine main bearing exerciser with outer casing is supported with turbine, the exerciser has merged aero-engine
True parts；
Inner ring shafting 9, outer ring shafting 4, engine true zero that exerciser main body is rotated by the inside and outside circle of driving test bearing
Component and reciprocator's composition.Engine true zero component simulates the complete vibration transfer path of test bearing.Exerciser master
Body is provided with lubricating system and vibration monitor system；Lubricating system provides for each rotatable parts of exerciser lubricates and monitors gold in lubricating oil
Belong to chip situation.Vibration monitor system is used to carry out vibration transfer law research.
The true parts of aero-engine include real aero-turbine and supported and outer casing component and experiment
Device support connects, and the shafting of two independent rotations, the electro spindle of low speed shafting are set up using turbine supporting member as bearing supporting-point
Moved back and forth with support, be easy to the dismounting of exerciser.
The high-speed coupling maximum speed is 16500rpm, and low-speed shaft coupler maximum speed is 12000rpm.
Inner ring shafting 9 and outer casing component 8 are connected to the exerciser being made up of support 1 and main body support 5 by adpting flange 7
On lathe bed；High-speed electric main shaft 2, low speed electro spindle 11 drive outer ring shafting 4 by high-speed coupling 3, low-speed shaft coupler 10 respectively
Rotating shaft b34, the rotating shaft a20 rotations of inner ring shafting 9, load cylinder 6 is connected with inner ring shafting 9, and applies load for inner ring shafting 9
Lotus；Test bearing 15 is arranged between outer ring shafting 4, inner ring shafting 9.
Complete vibration transmission path is realized by test bearing 15, the inner ring shafting 9 of exerciser, outer casing component 8；The biography
Defeated path is 15 → engine of test bearing true spare part low-pressure shaft rear fulcrum bearing 29 → squeeze film damper, 28 → axle
Hold 9 → blender of casing 32 → inner ring shafting → eccentric wheel and sliding block → outer casing component 8.
The present invention can obtain following beneficial effect：
The present invention can be used for the performance simulation experiment for carrying out engine intermediary base bearing；
The present invention can carry out the base bearing dither monitoring of aero-engine intermediary, the research of lubricating oil chip surveillance technology；
The present invention possesses variable speed, varying load accelerated test, lubricating oil heating, lubricating oil for oil return and lubricating system simulation energy
Power, available in aero-engine intermediary base bearing rolling contact fatigue study mechanism, failure procedure law study and conduct
Jie's base bearing Vibration Signal in Frequency Domain separates the support platform studied with enhancing, Incipient Fault Diagnosis, failure prediction method.
Brief description of the drawings
Body Layout's schematic diagram of Fig. 1 present invention；
Fig. 2 inner ring shafting structure schematic diagrames；
Fig. 3 outer rings shafting structure schematic diagram；
Fig. 4 reciprocators schematic diagram；
Fig. 5 lubricating oil debris sensor schematic layout patterns；
Fig. 6 high frequency vibration transducer schematic layout patterns；
Fig. 7 exercisers totally constitute schematic diagram.
In figure：1-support, 2-high-speed electric main shaft, 3-high-speed coupling, 4-outer ring shafting, 5-main body support, 6-
Load cylinder, 7-adpting flange, the supporting of 8-turbine and outer casing component, 9-inner ring shafting, 10-low-speed shaft coupler, 11-
Low speed electro spindle, 12-reciprocator and bearing, 13-nut, 14-injection loop, 15-test bearing, 16-bearing block,
17-nut a, 18-loading sleeve, 19-gland a, 20-rotating shaft a, 21-injection loop, 22-installing plate, 23-end cap, 24-
Positioning seat, 25-sealing ring, 26-bushing, 27-bearing insert, 28-squeeze film damper, 29-low pressure rear fulcrum axle
Hold, 30-nut b, 31-oil spout block, 32-Bearing Casing, 33-big end cap, 34-rotating shaft b, 35-end cap, 36-locking screw
Female a, 37-bearing a, 38-spring, 39-housing, 40-alignment pin, 41-spacer ring, 42-bearing b, 43-gland b, 44-
Oil cover, 45-test bearing outer ring, 46-locking nut b, 47-back leakage connection, 48-locking nut c, 49-leading screw, 50-
Support, 51-guide rail, 52-base, 53-handwheel, 54-lubricating oil debris sensor, 55-lubricating oil scavenge oil pump, 56-oil filter
Component, 57-bypass flap, 58-oil tank, 59-lubricating oil oil feed pump, 60-overflow valve, 61-radiator, 62-engine
Scavenge oil pump calotte installs side after component, and side is installed in 63-Bearing Casing outer rim, 64-turbine supporting, and 65-outer casing is installed
Side.
Embodiment
Exerciser is totally constituted as shown in fig. 7, the inner ring shafting that exerciser main body is rotated by the inside and outside circle of driving test bearing
9th, the true spare part of outer ring shafting 4, engine and reciprocator's composition.Engine true zero component simulates the complete of test bearing
Whole vibration transfer path.Exerciser main body is provided with lubricating system and vibration monitor system；Lubricating system is each rotation section of exerciser
Part, which is provided, lubricates and monitors metal fragment situation in lubricating oil.Vibration monitor system is used to carry out vibration transfer law research.
As shown in figure 1, the present invention connects the supporting of real aero-turbine and outer casing component with exerciser support
Be integrated, set up the shaftings of two independent rotations using turbine supporting member as bearing supporting-point, the electro spindle of low speed shafting and
Support is moved back and forth, and is easy to the dismounting of exerciser.
High-speed coupling maximum speed is 16500rpm, and low-speed shaft coupler maximum speed is 12000rpm.
Inner ring shafting 9 and outer casing component 8 are connected to the exerciser being made up of support 1 and main body support 5 by adpting flange 7
On lathe bed；High-speed electric main shaft 2, low speed electro spindle 11 drive outer ring shafting 4 by high-speed coupling 3, low-speed shaft coupler 10 respectively
Rotating shaft b34, the rotating shaft a20 rotations of inner ring shafting 9, load cylinder 6 is connected with inner ring shafting 9, and applies load for inner ring shafting 9
Lotus；Test bearing 15 is arranged between outer ring shafting 4, inner ring shafting 9.
Complete vibration transmission path is realized by test bearing 15, the inner ring shafting 9 of exerciser, outer casing component 8；The biography
Defeated path is 15 → engine of test bearing true spare part low-pressure shaft rear fulcrum bearing 29 → squeeze film damper, 28 → axle
Hold 9 → blender of casing 32 → inner ring shafting → eccentric wheel and sliding block → outer casing component 8.
The present invention to test bearing when carrying out variable speed, load change test, by high-speed electric main shaft 2, low speed electro spindle 11
Driving high-speed coupling 3, low-speed shaft coupler 10 respectively, test bearing inner ring rotates with inner ring shafting 9, test bearing outer ring 45 with
Outer ring shafting 4 is rotated, and test load is applied to inner ring shafting 9 by load cylinder 6 by loading sleeve 18, and passes through inner ring shafting 9
It is applied on test bearing 15.
As shown in Figure 2, the Bearing Casing 32 of inner ring shafting 9 is supported inner ring shafting by low pressure rear fulcrum bearing 29；Extruding oil
Film damper 28 is arranged between the inner ring of Bearing Casing 32 and low pressure rear fulcrum bearing 29, and inner ring shafting 9 is hindered by squeeze film
The squeeze film of Buddhist nun's device 28 absorbs vibrational energy；Loading sleeve 18 is positioned close to the rotating shaft of inner ring shafting 9 of the side of test bearing 15
On a20, the end face of test bearing 15 is fixed by nut a17；Positioning seat 24 is fastened on bearing with end cap 23 by screw
On the mounting hole of casing end face, the loading and positioning to inner ring shafting 9 are realized；The inner ring of low pressure rear fulcrum bearing 29 is fixed on axle
Hold on bushing 27, bearing insert 27 is fixed on the rotating shaft a20 of inner ring shafting 9, bearing insert 27 passes through bushing 26 and nut b30
Positioned and fastened, the outer ring of positioning seat 24 is provided with squeeze film damper 28 and is fixed on the inner ring of Bearing Casing 32
On；Installing plate 22 is arranged between Bearing Casing 32 and support 1, is bolted on Bearing Casing and is installed on side 65.
The inner ring of test bearing 15 is arranged on rotating shaft a20 one end, and injection loop 14 passes through nut 13 and test bearing 15
Inner ring is connected, and bearing block 16 is arranged on the outside of test bearing 15, the profit of closing is formed between bearing block 16 and test bearing 15
Sliding cavity；Injection loop 14 is the inner ring fuel feeding of test bearing 15.The rotating shaft a20 other end is sealed by big end cap 33；Sealing ring
25 are arranged on the outside of positioning seat 24；Injection loop 21 is arranged between loading sleeve 18 and auxiliary positioning bearing, is fixed by screw
On the housing of support 1, injection loop 21 is that loading sleeve 18 and auxiliary positioning bearing provide lubrication；Oil spout block 31 is arranged on bearing machine
On the lubricating oil oil supplying hole of casket 32, it is fixed by screws on Bearing Casing 32, is the fuel feeding of low pressure rear fulcrum bearing 29, completes lubrication
Function.
Outer ring shafting is shown in Fig. 3：Outer ring shafting 4 is by rotating shaft b34, end cap 35, locking nut a36, bearing a37, spring 38, shell
Body 39, alignment pin 40, spacer ring 41, bearing b42, gland b43, oil cover 44, test bearing outer ring 45, locking nut b46, oil return connect
First 47 composition；
Outer ring shafting 4 is arranged in the support 5 shown in Fig. 1.The rotating shaft b34 of outer ring shafting 9 is carried to test bearing outer ring 45
For supporting, rotating shaft b34 is supported by bearing a37 and bearing b42, and rotating shaft b34 is fixed on housing 39 by alignment pin 40.Bearing
A37 is fixed by locking nut a36, and bearing b42 is fixed by spacer ring 41 and locking nut a36.Install test bearing outer ring 45
In rotating shaft b34 one end, it is fixed by locking nut b46.Spring 38 is arranged between housing 39 and bearing a37, spring 38) be
Bearing a37 increases preload, it is ensured that rotating shaft b34 operation process is steady.
Electro spindle power is transferred torque to rotating shaft b34, motoring ring test bearing outer ring 45 by rotating shaft b34 by flexible clutch
Rotate；Rotating shaft b34 one end is sealed by end cap 35, gland b43.End cap 35, housing 39, gland b43 constitute outer ring shafting bearing a37
With bearing b42 closed lubrication cavity, bearing a37 and bearing b42 carry out fuel feeding by the equipment oil passage of lubricating system.Gland
B43 and oil cover 44 constitute test bearing lubricating cavity, and independent oil return is realized by back leakage connection 47.
Reciprocating device is shown in Fig. 4：Reciprocating device is by locking nut c48, leading screw 49, support 50, guide rail 51, base
52nd, handwheel 53 is constituted.Leading screw 49 is driven to rotate by rotating handwheel 53, the guide support 50 of leading screw 49 is moved along before and after guide rail 51
It is dynamic.Locking nut c48 limitation handwheels 53 are rotated, and realize that the front and rear of inner ring electro spindle moves back and forth.
Exerciser lubricating oil debris sensor layout is shown in Fig. 5：The independent oil return of test bearing 15, test bearing 15 peels off what is produced
Metal fillings reflects the health status of test bearing by lubricating oil debris sensor 54, lubricating oil is by returning indirectly by back leakage connection 47
Oil pump 55 is drawn through oil filter component 56,57 times oil tanks 58 of bypass flap, then through oil feed pump 59, overflow valve 60, through radiator
To the fuel feeding of test bearing 15 after 61, formed for oil return circulation.
Exerciser high frequency vibration transducer layout is shown in Fig. 6：Arrange high by the true turbine supporting of engine and outer casing component
Frequency vibration sensor, according to vibration transitive relation, installs side 62, Bearing Casing outer rim in rear fulcrum scavenge oil pump calotte respectively
63rd, 65 placement sensors, the transmission road for development test bear vibration when 64 and outer casing are installed are installed in turbine supporting
Footpath and rule.
Claims (7)
1. support the aeroplane engine main bearing exerciser with outer casing with turbine, it is characterised in that：The exerciser has merged boat
The true parts of empty engine；
Inner ring shafting (9), outer ring shafting (4), engine true zero that exerciser main body is rotated by the inside and outside circle of driving test bearing
Component and reciprocator's composition；Engine true zero component simulates the complete vibration transfer path of test bearing；Exerciser master
Body is provided with lubricating system and vibration monitor system；Lubricating system provides for each rotatable parts of exerciser lubricates and monitors gold in lubricating oil
Belong to chip situation；Vibration monitor system is used to carry out vibration transfer law research；
The true parts of aero-engine include real aero-turbine and supported and outer casing component and exerciser machine
Seat even, using turbine supporting member as bearing supporting-point sets up the shafting of two independent rotations, the electro spindle and branch of low speed shafting
Frame is moved back and forth, and is easy to the dismounting of exerciser；
High-speed coupling maximum speed is 16500rpm, and low-speed shaft coupler maximum speed is 12000rpm；
Inner ring shafting (9) and outer casing component (8) are connected to what is be made up of support (1) and main body support (5) by adpting flange (7)
On exerciser lathe bed；High-speed electric main shaft (2), low speed electro spindle (11) pass through high-speed coupling (3), low-speed shaft coupler (10) respectively
Drive rotating shaft b (34), rotating shaft a (20) rotations of inner ring shafting (9), load cylinder (6) and the inner ring shafting of outer ring shafting (4)
(9) connect, and be inner ring shafting (9) imposed load；Test bearing (15) be arranged on outer ring shafting (4), inner ring shafting (9) it
Between；
Complete vibration transmission path is realized by test bearing (15), the inner ring shafting (9) of exerciser, outer casing component (8)；Should
Transmission path is test bearing (15) → true spare part of engine.
2. the aeroplane engine main bearing exerciser according to claim 1 supported with turbine with outer casing, its feature exists
In：The transmission path of the true spare part of engine is low-pressure shaft rear fulcrum bearing (29) → squeeze film damper (28) → bearing
Casing (32) → inner ring shafting (9) → blender → eccentric wheel and sliding block → outer casing component (8).
3. the aeroplane engine main bearing exerciser according to claim 1 supported with turbine with outer casing, its feature exists
In：The Bearing Casing (32) of inner ring shafting (9) is supported by low pressure rear fulcrum bearing (29)；Squeeze film damper (28) is arranged on
Between Bearing Casing (32) inner ring and low pressure rear fulcrum bearing (29), inner ring shafting (9) passes through squeeze film damper (28)
Squeeze film absorbs vibrational energy；Loading sleeve (18) is positioned close to inner ring shafting (9) rotating shaft a of test bearing (15) side
(20) on, the end face of test bearing (15) is fixed by nut a (17)；Positioning seat (24) and end cap (23) are tight by screw
Gu on the mounting hole of Bearing Casing end face, realize the loading and positioning to inner ring shafting (9)；Low pressure rear fulcrum bearing (29)
Inner ring is fixed on bearing insert (27), and bearing insert (27) is fixed on the rotating shaft a (20) of inner ring shafting (9), bearing insert
(27) positioned and fastened by bushing (26) and nut b (30), the outer ring of positioning seat (24) is provided with squeeze film damping
Device (28) is simultaneously fixed in the inner ring of Bearing Casing (32)；Installing plate 22 is arranged between Bearing Casing (32) and support (1), is led to
Cross and be bolted in Bearing Casing installation side (65)；
The inner ring of test bearing (15) is arranged on one end of rotating shaft a (20), and injection loop (14) passes through nut (13) and test bearing
(15) inner ring connection, bearing block (16) is arranged on the outside of test bearing (15), bearing block (16) and test bearing (15) it
Between form the lubrication cavity of closing；Injection loop (14) is the inner ring fuel feeding of test bearing (15)；Rotating shaft a (20) other end passes through
Big end cap (33) sealing；Sealing ring (25) is arranged on the outside of positioning seat (24)；Injection loop (21) be arranged on loading sleeve (18) and
Between auxiliary positioning bearing, on the housing for being fixed by screws in support (1), injection loop (21) is that loading sleeve (18) and auxiliary are fixed
Position bearing provides lubrication；Oil spout block (31) is arranged on the lubricating oil oil supplying hole of Bearing Casing (32), is fixed by screws in bearing
It is low pressure rear fulcrum bearing (29) fuel feeding on casing (32), completes lubricating function.
4. the aeroplane engine main bearing exerciser according to claim 1 supported with turbine with outer casing, its feature exists
In：Outer ring shafting (4) by rotating shaft b (34), end cap (35), locking nut a (36), bearing a (37), spring (38), housing (39),
Alignment pin (40), spacer ring (41), bearing b (42), gland b (43), oil cover (44), test bearing outer ring (45), locking nut b
(46), back leakage connection (47) is constituted；
Outer ring shafting (4) is arranged in support (5)；The rotating shaft b (34) of outer ring shafting (9) provides branch to test bearing outer ring (45)
Hold, rotating shaft b (34) is supported by bearing a (37) and bearing b (42), rotating shaft b (34) is fixed on housing (39) by alignment pin (40)
On；Bearing a (37) is fixed by locking nut a (36), and bearing b (42) is fixed by spacer ring (41) and locking nut a (36)；Examination
Bearing outer ring (45) is tested installed in rotating shaft b (34) one end, is fixed by locking nut b (46)；Spring (38) is arranged on housing
(39) between bearing a (37), spring (38) is that bearing a (37) increases preload, it is ensured that rotating shaft b (34) operation process is steady；
Electro spindle power is transferred torque to rotating shaft b (34), motoring ring test bearing outer ring by rotating shaft b (34) by flexible clutch
(45) rotate；Rotating shaft b (34) one end is sealed by end cap (35), gland b (43)；End cap (35), housing (39), gland b (43) structure
Into outer ring shafting bearing a (37) and bearing b (42) closed lubrication cavity, bearing a (37) and bearing b (42) are by lubricating system
Equipment oil passage carries out fuel feeding；Gland b (43) and oil cover (44) constitute test bearing lubricating cavity, are realized by back leakage connection (47)
Independent oil return.
5. the aeroplane engine main bearing exerciser according to claim 1 supported with turbine with outer casing, its feature exists
In：Reciprocating device is by locking nut c (48), leading screw (49), support (50), guide rail (51), base (52), handwheel (53) group
Into；Leading screw (49) is driven to rotate by rotating handwheel (53), leading screw (49) guide support (50) is movable along guide rail (51)；
Locking nut c (48) limitation handwheels (53) are rotated, and realize that the front and rear of inner ring electro spindle moves back and forth.
6. the aeroplane engine main bearing exerciser according to claim 1 supported with turbine with outer casing, its feature exists
In：Test bearing (15) individually oil return, test bearing (15) peels off the metal fillings produced by back leakage connection (47), by lubricating oil
Debris sensor (54) reflects the health status of test bearing indirectly, and lubricating oil is drawn through oil filter component by scavenge oil pump (55)
(56), bypass flap (57) returns oil tank (58), then through oil feed pump (59), overflow valve (60), to experiment after radiator (61)
Bearing (15) fuel feeding, is formed for oil return circulation.
7. the aeroplane engine main bearing exerciser according to claim 1 supported with turbine with outer casing, its feature exists
In：High frequency vibration transducer is arranged by the true turbine supporting of engine and outer casing component, according to vibration transitive relation, is existed respectively
Rear fulcrum scavenge oil pump calotte installs (64) and outer casing peace when (62), Bearing Casing outer rim (63), turbine supporting are installed
Rim (65) placement sensor.
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| CN104964824B true CN104964824B (en) | 2017-10-24 |
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| CN104964824A (en) | 2015-10-07 |
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