CN205824035U - A kind of active damping supporting of scalable rigidity and damping - Google Patents
A kind of active damping supporting of scalable rigidity and damping Download PDFInfo
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- CN205824035U CN205824035U CN201620635330.2U CN201620635330U CN205824035U CN 205824035 U CN205824035 U CN 205824035U CN 201620635330 U CN201620635330 U CN 201620635330U CN 205824035 U CN205824035 U CN 205824035U
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- damping
- pedestal
- supporting
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- sleeve
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Abstract
The utility model discloses the active damping supporting of a kind of scalable rigidity and damping, including fixed bearing unit and adjustable support unit；Wherein, described fixed bearing unit includes that pedestal, bearing, sleeve and elastic washer, described bearing are installed in sleeve, and elastic washer is installed between sleeve and pedestal；Described adjustable support unit includes two internal friction discs, two external friction dishes, at least two actuation mechanism and holds out against nut, two described external friction dishes are symmetrically mounted on the two ends of the sleeve of fixed bearing unit, on the both sides end face of the pedestal that two internal friction discs are symmetrically mounted on fixed bearing unit, between external friction dish and internal friction disc, there is primary clearance；Described actuation mechanism is arranged in pedestal and by holding out against nut axial restraint.This utility model is on the basis of only taking up a supporting space, it is achieved that the active of rotor bearing rigidity and damping controls, and it is simple and compact for structure, and the range of accommodation of support stiffness and damping is relatively big, and reliability is higher.
Description
Technical field
This utility model belongs to rotor-support-foundation system vibration damping field, particularly relates to a kind of scalable rigidity for rotor and damping
Active damping supporting.
Background technology
The vibration problem of rotor-support-foundation system is widely present in the fields such as aviation, boats and ships, vehicle, the energy, and vibration can cause setting
The fatigue of standby critical component or even inefficacy, the serious threat safety of daily production, its noise produced is to production scene people
The physical and mental health of member also result in huge harm, therefore the vibration control of rotor-support-foundation system is always domestic and international association area expert and learns
Person's focus of attention problem.
The supporting of rotor is carried out Vibration Absorption Designing is to realize one of the most commonly used means of rotor vibration damping.Generally,
Rotor bearing can be reduced to determine stiffness coefficient spring and determine the combination of damped coefficient antivibrator, then be passive damping supporting.Quilt
The parameter of dynamic damping supporting once it is determined that, its damping frequency range being suitable for determines, the most therewith to change its scope of application then
Need to redesign system, therefore, passive damping supporting is only effective in the range of certain frequency, adapts to frequency band narrow.By Theory of Vibration
Understanding, only when the ratio of driving frequency with system frequency is more than 1.414, vibroshock just has effectiveness in vibration suppression, therefore passively subtracts
Supporting of shaking is only applicable to the rotor-support-foundation system of medium, high frequency excitation, and current people are more and more tighter to the requirement of rotor-support-foundation system working environment
Severe, the excitation applied to rotor-support-foundation system also becomes increasingly complex various, and traditional passive damping supporting cannot meet use
Demand.
Active damping supporting utilizes external energy, during rotor-support-foundation system is produced vibration by dynamic excitation, instantaneous
The dynamics of change system, so that the dynamic response of system is decayed rapidly, has adaptation frequency band wide, capacity of resisting disturbance
The advantage such as strong, has obtained the great attention of domestic and international academia and engineering circles, has been one of current study hotspot.Dry-friction damping
Device is during rotor-support-foundation system works, it is possible to by the Coulomb damping between rubbing surface by the changes mechanical energy of system vibration be
Heat energy, then passed by other media, thus reaching the purpose of vibration damping, its damping size can be by the compression between rubbing surface
Power controls in real time, therefore is supported central by the active damping being increasingly being applied to rotor-support-foundation system.
The rotor-support-foundation system active damping supporting of existing introducing dry damping device mostly contains additional support, document (Ni
Moral. oscillation damping method based on intelligence spring and the applied research [D] in many fulcrum shafts system thereof. Nanjing: Nanjing Aero-Space
University, 2014.) propose the supporting of a kind of rotor-support-foundation system active damping containing friction pair, including main supporting, aiding support, rub
The parts such as pad and actuator, also to disclose a kind of cartridge branch dry damping device automatically controlled for Chinese patent ZL200710017593.2
Device, including static friction sheet, armature, bearing and electric magnet, both supportings all include main supporting part and additional support portion
Point, spatially occupy the position of two supportings, it is impossible to meet part existing equipment to tight space and the need of control quality
Ask.Accordingly, it would be desirable to design the rotor-support-foundation system active damping supporting of a kind of compact conformation.
Utility model content
Technical problem to be solved in the utility model be to provide one can actively regulate rigidity and damping and compact conformation,
The rotor-support-foundation system damping supporting taking up room little.
The active damping supporting of a kind of scalable rigidity described in the utility model and damping, including fixed bearing unit and
Adjustable support unit；Wherein, described fixed bearing unit includes pedestal, bearing, sleeve and elastic washer, described bearing peace
Being loaded in sleeve, elastic washer is installed between sleeve and pedestal；Described adjustable support unit include two internal friction discs, two
Individual external friction dish, at least two actuation mechanism and hold out against nut, two described external friction dishes are symmetrically mounted on fixing
The two ends of the sleeve of bearing unit, on the both sides end face of the pedestal that two internal friction discs are symmetrically mounted on fixed bearing unit, outward
Primary clearance is there is between frictional disk and internal friction disc；Described actuation mechanism is arranged in pedestal and axial by holding out against nut
Fixing.
Improving further, the bottom of described pedestal is provided with for the fot screw hole fixing with ground, and inside is provided with logical
Hole, the both sides of pedestal are connected by axial deformation body outer face.
Improving further, the mid portion of described through hole is unthreaded hole, for for installing the screwed hole holding out against nut.
Improving further, the centre of described through hole is all left for connecting the perforate controlling circuit, is positioned at the pedestal first half
The perforate divided is straight hole, and the perforate being positioned at pedestal the latter half is phase perforation.
Improving further, two end faces of described sleeve are evenly equipped with the screwed hole for fixing external friction face, and inside is provided with
One circle is for positioning the flange of bearing.
Improving further, two described internal friction discs are arranged on the outer face of the pedestal of fixed bearing unit by screw
On.
Improving further, described actuation mechanism is made up of actuator and the jacking block being arranged on actuator two ends, is arranged on
In the through hole of pedestal and by holding out against nut axial restraint, hold out against nut and be arranged on the screwed hole of through hole and the outer face section of intersecting
In.
Improving further, described elastic washer is made up of metal-rubber, viscoelastic rubber or rubber-silicone oil material, its boundary
Face is shaped as " convex " font, and internal diameter is equal, and intermediate outer is big, and both sides external diameter is little.
Improving further, described actuator is in Piezoelectric Ceramic part, electromagnetic drive member, hydraulic pressure precession mechanism
A kind of.
The beneficial effects of the utility model are:
Compared with prior art, this utility model is on the basis of only taking up a supporting space, it is achieved that rotor bearing
The active of rigidity and damping controls, and adapts to bandwidth, particularly low-frequency vibration is controlled effect the most notable；Its simple in construction
Compact, the range of accommodation of support stiffness and damping is relatively big, and reliability is higher；Supporting after improvement has three kinds of duties: point
From state, dry condition be completely combined state, three kinds of duties can be cut rapidly according to the feedback signal of external sensor
Change, can carry out the vibration of rotor actively controlling flexibly so that it is vibration amplitude controls in allowed band always.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the 3-D view of this utility model pedestal；
Fig. 3 is the sectional view of this utility model pedestal.
In Fig. 1: 1 pedestal, 2 bearings, 3 sleeves, 4 elastic washers, 5 external friction dishes, 6 internal friction discs, 7
Hold out against nut, 8 jacking blocks, 9 actuators；
In Fig. 2: 101 fot screw holes, 102 through holes, 103 perforates, 104 outer faces, 105 axial deformations
Body.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings:
As it is shown in figure 1, the active damping supporting of a kind of scalable rigidity and damping, including fixed bearing unit and adjustable supporting
Bearing unit；Wherein, described fixed bearing unit includes that pedestal 1, bearing 2, sleeve 3 and elastic washer 4, described bearing 2 are pacified
Being loaded in sleeve 3, elastic washer 4 is installed between sleeve 3 and pedestal 1；Described adjustable support unit includes two internal friction
Dish 5, two external friction dishes 6, at least two actuation mechanism and hold out against nut 7, the symmetrical peace of two described external friction dishes 5
Being contained in the two ends of the sleeve of fixed bearing unit, two internal friction discs 6 are symmetrically mounted on the both sides of the pedestal of fixed bearing unit
On end face, between external friction dish 5 and internal friction disc 6, there is primary clearance；Described actuation mechanism is arranged in pedestal 1 and passes through
Hold out against nut 7 axial restraint；Described actuation mechanism is made up of actuator 9 and the jacking block 8 being arranged on actuator two ends.
As Figure 2-3, the bottom of described pedestal 1 is provided with for the fot screw hole 101 fixing with ground, and inside sets
Having the through hole 102 of actuation mechanism for installing adjustable support unit, the mid portion of this through hole is unthreaded hole, for being used for pacifying
Dress holds out against the screwed hole of nut；The both sides of pedestal 1 are connected by axial deformation body 105 outer face 104, described through hole 102
The middle perforate 103 all left for connecting control circuit, the perforate being positioned at pedestal 1 top half is straight hole, is positioned under pedestal
The perforate of half part is phase perforation.
Assembling process of the present utility model is as follows:
Jacking block 8 and actuator 9 are respectively charged in the unthreaded hole of through hole 102 mid portion of pedestal 1, and respectively each are driven
The circuit perforate 103 from pedestal that controls of moving part 9 is drawn, then screws in the screwed hole of the through hole 102 of pedestal 1 and hold out against
Nut 7 is also tightened；Internal friction disc 6 is separately mounted to the two ends, outer face 104 of pedestal 1, and screws in outer face 104 with screw
It is fastened by screwed hole；Then, in bearing 2 is put into sleeve 3 and with the flange in sleeve 3, it is positioned, then by a left side
The external friction dish 5 on limit is installed to fasten on the sleeve 3 of fixed bearing unit and with screw；Secondly, elastic washer 4 is enclosed within sleeve
Outside 3, position with the external friction dish 5 on the left side；Elastic washer 4 is loaded pedestal 1 together with bearing 2, sleeve 3, the external friction dish 5 on the left side
In, rely on the external friction dish 5 on the left side and the internal friction disc 6 on the left side to be adjacent to position with upper-part；Outer by the right rubs
Wiping dish 5 is arranged on sleeve right-hand member, and fastens with screw；Finally rotor is loaded bearing, make actuator 9 stretch by controlling circuit
Long, hold out against the jacking block 8 at two ends, by the dome-type projection on jacking block 8, the inside and outside frictional disk in two ends is held out against, thus realize certainly
Dynamic centering；Pedestal is fixed on ground or other fixed bodies by fot screw hole 101, makes actuator 9 by controlling circuit
Restoring to the original state, installation step completes since then.
Operation principle of the present utility model:
The active damping supporting of scalable rigidity described in the utility model and damping is divided into three kinds of duties: separate shape
State, dry condition and be completely combined state, three kinds of duties can switch rapidly according to the feedback signal of external sensor；
When the vibration amplitude of rotor is within permissible value, supporting is in released state, the actuator 9 of adjustable support unit
Not working, without deformation, there is gap between the rubbing surface of external friction dish 5 and internal friction disc 6 in the axial deformation body 105 on pedestal 1, this
Time rotor oscillation bang path be bearing 2 sleeve 3 elastic washer 4 pedestal 1, owing to the rigidity of elastic washer 4 is less,
So time supporting integral stiffness less, the viscous damping of supporting comprehensive damping predominantly elastic washer 4；
When the vibration amplitude of rotor exceedes permissible value, and supporting switches to dry condition, the actuator 9 of adjustable support unit
Elongation, first holds out against the jacking block 8 at two ends, then holds out against the outer face 104 on pedestal 1 by the dome-type projection on jacking block 8, so
Axial deformation body 105 on rear pedestal 1 produces axial deformation, so that external friction dish 5 contacts with the rubbing surface of internal friction disc 6,
The control power of regulation actuator 9 output so that external friction dish 5 and internal friction disc 6 keep dynamic friction state, now rotor oscillation
Bang path is that two paths are in parallel, is outside bearing 2 sleeve 3 elastic washer 4 pedestal 1 and bearing 2 sleeve 3 respectively
Frictional disk 5 internal friction disc 6 pedestal 1, for released state, in parallel a part of zero in former vibration transfer path
Part, therefore supporting integral stiffness becomes big, and the viscous damping of supporting comprehensive damping predominantly elastic washer 4 and external friction dish 5 are with interior
Mutual fricative Coulomb damping between frictional disk 6, Coulomb damping can consume rapidly the energy of rotor oscillation, thus vibrate
Amplitude lowers；
When rotor-support-foundation system needs instantaneous switching natural frequency to walk around critical speed district, can first be switched to by released state
Being completely combined state, the actuator 9 of adjustable support unit extends, and first holds out against the jacking block 8 at two ends, then by jacking block 8
Dome-type projection holds out against the outer face 104 on pedestal 1, and then the axial deformation body 105 on pedestal 1 produces axial deformation, thus
Making external friction dish 5 contact with the rubbing surface of internal friction disc 6, the control power exported by actuator 9 tunes up so that external friction dish 5 He
The rubbing surface of internal friction disc 6 compresses completely, dynamic friction become static friction, now no longer produces relatively between sleeve 3 and pedestal 1
Displacement, therefore the bang path of rotor oscillation is bearing 2 sleeve 3 external friction dish 5 internal friction disc 6 pedestal 1, due to elasticity
Packing ring 4 is completely isolated, so time supporting integral stiffness value reach maximum, and support comprehensive damping value and minimize, thus
The natural frequency of rotor-support-foundation system increases, and after waiting rotating speed to be increased over former critical speed, then switches to released state, thus may be used
Rotor speed ascent stage is made to avoid resonance region.
By toggling of three of the above state, can carry out the vibration of rotor actively controlling flexibly so that it is vibration
Amplitude controls in allowed band always.
Above-mentioned actuator 9 generally uses Piezoelectric Ceramic part, and by its deformation of Control of Voltage, voltage more large deformation is the biggest,
The power of output is the biggest；Thrust when between inside and outside frictional disk is multiplied by frictional force that coefficient of friction the obtains inertia force less than structure
Time, contact but not exclusively compress；If need to compress completely directly thrust is transferred to the most permissible very greatly.
The above is only preferred implementation of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from this utility model principle, it is also possible to make some improvement, these improvement also should be regarded as
Protection domain of the present utility model.
Claims (9)
1. the active damping supporting of a scalable rigidity and damping, it is characterised in that: include fixed bearing unit and adjustable supporting
Bearing unit；Wherein, described fixed bearing unit includes that pedestal, bearing, sleeve and elastic washer, described bearing are installed on set
In cylinder, elastic washer is installed between sleeve and pedestal；Described adjustable support unit includes two internal friction discs, rubs outside two
Wiping dish, at least two actuation mechanism and hold out against nut, two described external friction dishes are symmetrically mounted on fixed bearing list
The two ends of sleeve of unit, on the both sides end face of the pedestal that two internal friction discs are symmetrically mounted on fixed bearing unit, external friction dish
And there is primary clearance between internal friction disc；Described actuation mechanism is arranged in pedestal and by holding out against nut axial restraint.
The active damping supporting of scalable rigidity and damping the most according to claim 1, it is characterised in that described pedestal
Bottom is provided with for the fot screw hole fixing with ground, and inside is provided with through hole, and the both sides of pedestal are connected by axial deformation body
There is outer face.
The active damping supporting of scalable rigidity and damping the most according to claim 2, it is characterised in that in described through hole
Between part be unthreaded hole, hold out against the screwed hole of nut for being used for installation.
The active damping supporting of scalable rigidity and damping the most according to claim 3, it is characterised in that in described through hole
Between all leave for connect control circuit perforate, the perforate being positioned at pedestal top half is straight hole, is positioned at pedestal the latter half
Perforate be phase perforation.
The active damping supporting of scalable rigidity and damping the most according to claim 1, it is characterised in that the two of described sleeve
Individual end face is evenly equipped with the screwed hole for fixing external friction face, and inside is provided with a circle for positioning the flange of bearing.
The active damping supporting of scalable rigidity and damping the most according to claim 1, it is characterised in that in described two
On the outer face of the pedestal that frictional disk is arranged on fixed bearing unit by screw.
The active damping supporting of scalable rigidity and damping the most according to claim 1, it is characterised in that described makees motivation
Structure is made up of actuator and the jacking block being arranged on actuator two ends, is arranged in the through hole of pedestal and axially solid by holding out against nut
Fixed, hold out against nut be arranged on through hole with in the screwed hole of the outer face section of intersecting.
The active damping supporting of scalable rigidity and damping the most according to claim 1, it is characterised in that described elastic washer
Being made up of metal-rubber, viscoelastic rubber or rubber-silicone oil material, its interface shape is " convex " font, and internal diameter is equal, outside centre
Footpath is big, and both sides external diameter is little.
The active damping supporting of scalable rigidity and damping the most according to claim 7, it is characterised in that described actuator
For the one in Piezoelectric Ceramic part, electromagnetic drive member, hydraulic pressure precession mechanism.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620231374 | 2016-03-24 | ||
| CN2016202313749 | 2016-03-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205824035U true CN205824035U (en) | 2016-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620635330.2U Withdrawn - After Issue CN205824035U (en) | 2016-03-24 | 2016-06-24 | A kind of active damping supporting of scalable rigidity and damping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205824035U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927708A (en) * | 2016-03-24 | 2016-09-07 | 南京航空航天大学 | Rigidity and damping adjustable active vibration reduction support |
| CN113565792A (en) * | 2021-07-21 | 2021-10-29 | 中国航空发动机研究院 | Elastic supporting structure |
-
2016
- 2016-06-24 CN CN201620635330.2U patent/CN205824035U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927708A (en) * | 2016-03-24 | 2016-09-07 | 南京航空航天大学 | Rigidity and damping adjustable active vibration reduction support |
| CN105927708B (en) * | 2016-03-24 | 2017-12-15 | 南京航空航天大学 | A kind of adjustable rigidity and the supporting of the active damping of damping |
| CN113565792A (en) * | 2021-07-21 | 2021-10-29 | 中国航空发动机研究院 | Elastic supporting structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161221 Effective date of abandoning: 20171215 |
|
| AV01 | Patent right actively abandoned |