CN108825718A - A kind of grounding type nonlinear energy trap inhibiting vibration of rotor system - Google Patents
A kind of grounding type nonlinear energy trap inhibiting vibration of rotor system Download PDFInfo
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- CN108825718A CN108825718A CN201810793804.XA CN201810793804A CN108825718A CN 108825718 A CN108825718 A CN 108825718A CN 201810793804 A CN201810793804 A CN 201810793804A CN 108825718 A CN108825718 A CN 108825718A
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- 230000002401 inhibitory effect Effects 0.000 title claims abstract description 23
- 238000000926 separation method Methods 0.000 claims abstract description 15
- 230000000694 effects Effects 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 4
- 239000000306 component Substances 0.000 description 10
- 230000001629 suppression Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000006096 absorbing agent Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/14—Suppression of vibrations in rotating systems by making use of members moving with the system using masses freely rotating with the system, i.e. uninvolved in transmitting driveline torque, e.g. rotative dynamic dampers
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- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a kind of grounding type nonlinear energy traps for inhibiting vibration of rotor system, including nonlinear energy trap ontology and fixed frame.Nonlinear energy trap ontology includes fixed ring, connection component, absorbing protonatomic mass block, weak separation spring and bearing assembly.Bearing assembly and axis cooperate comprising axle sleeve, bearing and bearing holder (housing, cover)；Weak separation spring and bearing assembly and absorbing protonatomic mass block cooperate, connection component and fixed ring and absorbing protonatomic mass block cooperate, it includes piecewise linearity rigidity bar, there is diameter not equal mesopore on the same circumference of absorbing protonatomic mass block, with piecewise linearity rigidity bar clearance fit, form piecewise linearity rigidity, fit non-linear cube rigidity；Fixed frame is fixed on the rack, and embodies ground connection property of the invention.The present invention can effectively inhibit the wide band vibration of rotor-support-foundation system, belong to Noise and Vibration Control field.Overall structure is simple and compact, and additional mass is small, and high reliablity is easy to use, is not required to the external offer energy.
Description
Technical field
The present invention relates to Control Technique of Vibration and Noise fields, and in particular to a kind of grounding type for inhibiting vibration of rotor system is non-
Linear energy trap, the vibration suppression of the core component rotor-support-foundation system for rotating machinery.
Background technique
Vibration is the typical harm of rotating machinery safe operation, and for multi-bearing rotor, working speed usually faces in single order
It is more than boundary's revolving speed, open, shutdown phase has to pass through first critical speed, strong resonance can occur at this time, seriously affect machine
The stable operation of group.With persistently having an effect for national equipment manufacture " 2025 plan ", to the high efficient and reliable and length of rotating machinery
The stable operation in period proposes increasingly higher demands.Therefore, particularly important to the efficiently control of its vibration of rotor system, and
It is a problem to be solved.
Installation dynamic vibration absorber is a kind of common method of vibration of rotor system control.By increasing bump leveller, whirler
The vibration of tool can be transmitted to bump leveller Tiny Mass, and keep low-frequency vibration.Dynamic vibration absorber can be divided into two types：Passively
Formula and actively (or half active) formula.
Currently, passive type bump leveller is used widely in rotating machinery vibrating inhibition field, structure is simple, is not necessarily to
Energy source, but because vibration suppression frequency band is narrow, there is biggish limitation in practical application；Active bump leveller control precision is high, reaction spirit
It is quick, and because structure is excessively complicated, cause its application low.
As previously mentioned, passive bump leveller and actively (or half actively) bump leveller have the shortcomings that in practical applications it is corresponding.
New equipment for inhibiting of vibration must be developed, the requirement of absorbing vibration suppression bandwidth simple to meet modern rotating structure is non-thread
Property energy wells can satisfy above-mentioned requirements.
Summary of the invention
Grounding type nonlinear energy trap of the invention is to be coupled by crucial nonlinear fitting element with rotor-support-foundation system
Lightweight device, lightweight refer to small absorbing protonatomic mass, and the non-linear cube of rigidity fitted inside nonlinear energy trap makes
It has extremely efficient vibration energy absorption ability, and has good rejection to the wide-band vibration of rotor-support-foundation system.
The purpose of the present invention is to propose to inhibit the grounding type nonlinear energy trap of vibration of rotor system, ground connection refers to that this is non-thread
Property energy wells ontology is fixed on the rack.Key is rigid to the cooperation fit non-linear cube of piecewise linearity rigidity bar and mesopore
The application of weak separation spring between the utilization of degree method and bearing holder (housing, cover) (rotor-support-foundation system) and absorbing protonatomic mass block.
In order to solve the above technical problems, the implementation organization plan that the present invention uses is：
A kind of grounding type nonlinear energy trap inhibiting vibration of rotor system, the nonlinear energy trap includes non-thread performance
Measure two parts of trap ontology and fixed frame；
The nonlinear energy trap ontology includes the bearing assembly matched with rotor-support-foundation system, and with fixed ring and absorbing
The connection component of protonatomic mass block cooperation；
The rotor-support-foundation system includes disk and axis；The bearing assembly includes bearing, bearing holder (housing, cover) and axle sleeve, and axle sleeve is covered in axis
On, bearing holder (housing, cover) is equipped with bearing holder (housing, cover) on axle sleeve on the outside of bearing, bearing holder (housing, cover) is connect by weak separation spring with absorbing protonatomic mass block；
The effect of the axle sleeve is the axial float for preventing nonlinear energy trap ontology；
The connection component includes 4 connecting rods and 4 piecewise linearity rigidity bars, and the connecting rod is solid by nut and inhales
Oscillator mass block is fixedly connected with fixed ring, and piecewise linearity rigidity bar one end is fixedly connected by nut with fixed ring, the other end
Clearance fit is formed with the mesopore of absorbing protonatomic mass block to connect；
The same circumference of the absorbing protonatomic mass block is equipped with connecting hole and mesopore；Connecting hole is the equal friendship of 4 diameters
Pitch the circular hole of distribution；Mesopore is the circular hole of 4 diameters cross-distributions such as not, is accommodated respectively in the connecting hole in connection component
There is connecting rod；Piecewise linearity rigidity bar is equipped in mesopore.
The fixed frame is fixed on the rack, and the affixed nonlinear energy trap ontology of the other end avoids nonlinear energy trap sheet
Body is rotated together with axis, and the both ends of axis and shaft end support base are cooperatively connected.
Fixed ring is equipped with the through-hole being cooperatively connected with connection component on the same circumference.
4 orthogonal location holes are provided on the inner wall of absorbing protonatomic mass block, bearing holder (housing, cover) is orthogonal equipped with 4
Location hole, by 4 weak separation spring positionings between absorbing protonatomic mass block and bearing holder (housing, cover).
The weak separation spring plays the role of connecting rotor-support-foundation system and perhaps nonlinear energy trap ontology, allow non-linear
The disturbance of energy wells ontology circumferential direction.
Contain bearing inside bearing assembly, realizes when nonlinear energy trap ontology when absorbing vibration of rotor system not with axis
It rotates together；
Bearing assembly contains axle sleeve, and the effect of the axle sleeve is to avoid bump leveller ontology with axis in axial float.
When nonlinear energy trap of the present invention work, vibration force is passed through into bearing assembly and weak separation after vibration of rotor system
Spring passes to absorbing protonatomic mass block, drives connecting rod vibration, further absorbing protonatomic mass block and 4 piecewise linearity rigidity bar phases
Contact-impact, and then absorbing protonatomic mass block Dynamic Absorption vibration of rotor system power energy.
The quality of absorbing protonatomic mass block can be replaced.
Absorbing protonatomic mass block 4 connecting holes on the same circumference and 4 mesopores are in cross arrangement.
Beneficial effects of the present invention are：
1. the bearing in package unit avoids circumferentially rotating for nonlinear energy trap ontology with fixed ring, axle sleeve is avoided
Nonlinear energy trap ontology is in axial play, it is specified that the working condition of the present apparatus.
2. the hole on absorbing protonatomic mass block and connection component in package unit are in mating connection, pass through the different suction of replacement
The diameter of this some holes and the quality of absorbing protonatomic mass block is adjusted in oscillator mass block, makes absorbing protonatomic mass block and piecewise linearity rigidity
The clearance fit of bar is adjustable, and then adjusts the non-linear cube of rigidity that nonlinear energy trap ontology fits, and designs different
The body part of nonlinear energy trap of the present invention can absorb vibration of the rotor-support-foundation system under different operating conditions.
3. 4 connection shank diameters in package unit are identical, it is installed in parallel, 4 piecewise linearity rigidity shank diameters differ, and
Connection intersects installation, passes through point of different groups of replacement (the fitting rule of piecewise linearity is strong and weak different, but is all a cube rule variation)
Section linear rigidity bar, keeps the clearance fit of piecewise linearity rigidity bar and absorbing protonatomic mass block adjustable, and then adjusts nonlinear energy
The non-linear cube of rigidity that trap ontology fits.The body part for designing different nonlinear energy traps of the present invention, can inhale
Receive vibration of the rotor-support-foundation system under different working conditions.
5. nonlinear energy trap mechanism is utilized in package unit, nonlinear energy trap of the present invention, more linear absorbing are formd
Device vibration suppression bandwidth.
Detailed description of the invention
Fig. 1 is that a kind of grounding type nonlinear energy trap for inhibiting vibration of rotor system of the present invention is applied to specific rotor-support-foundation system
Structural schematic diagram；
Fig. 2 is a kind of nonlinear energy trap ontology for the grounding type nonlinear energy trap for inhibiting vibration of rotor system of the present invention
Structural schematic diagram
Fig. 3 is a kind of schematic diagram of the fixed ring for the grounding type nonlinear energy trap for inhibiting vibration of rotor system of the present invention；
Fig. 4 is a kind of grounding type nonlinear energy trap for inhibiting vibration of rotor system of the present invention with one group of diameter connection
The schematic diagram of component；
Fig. 5 is a kind of grounding type nonlinear energy trap for inhibiting vibration of rotor system of the present invention with one group of diametric clearance
The schematic diagram of the absorbing protonatomic mass block in hole；
Fig. 6 is that a kind of grounding type nonlinear energy trap for inhibiting vibration of rotor system of the present invention removes the bearing group after axle sleeve
The structural schematic diagram of part；
Fig. 7 is a kind of schematic diagram of the fixed frame for the grounding type nonlinear energy trap for inhibiting vibration of rotor system of the present invention；
Fig. 8 be the present invention it is a kind of inhibit vibration of rotor system grounding type nonlinear energy trap piecewise linearity rigidity with it is non-
The mechanism matched curve figure of linear cube of rigidity；
Fig. 9 be rotor-support-foundation system be not added the present invention it is a kind of inhibit vibration of rotor system grounding type nonlinear energy trap when
Amplitude-versus-frequency curve figure.
Figure 10 (a) is between the mesopore and piecewise linearity rigidity bar of the absorbing protonatomic mass block of nonlinear energy trap of the present invention
Fit clearance use 0.25mm, the amplitude-versus-frequency curve figure of rotor-support-foundation system and nonlinear energy trap of the present invention；
Figure 10 (b) is between the mesopore and piecewise linearity rigidity bar of the absorbing protonatomic mass block of nonlinear energy trap of the present invention
Fit clearance use 0.5mm, the amplitude-versus-frequency curve figure of rotor-support-foundation system and nonlinear energy trap of the present invention；
Figure 10 (c) is between the mesopore and piecewise linearity rigidity bar of the absorbing protonatomic mass block of nonlinear energy trap of the present invention
Fit clearance use 0.75mm, the amplitude-versus-frequency curve figure of rotor-support-foundation system and nonlinear energy trap of the present invention.
Specific embodiment
1-9 with reference to the accompanying drawing shown in 10 (a), 10 (b), 10 (c), and gives an actual example and does to nonlinear energy trap of the present invention
Further details of explanation.
A kind of grounding type nonlinear energy trap inhibiting vibration of rotor system is applied to the specific knot of specific rotor-support-foundation system,
Including nonlinear energy trap ontology, fixed frame 2 and rack 14 and shaft end support 15.Including bearing assembly, connection component, absorbing
Protonatomic mass block 5 and fixed ring 12.Fixed frame 2 is referring to Fig. 7.The segmented line for the nonlinear energy trap that this kind of vibration of rotor system inhibits
The mechanism of action of property rigidity fit non-linear cube stiffness mechanism and nonlinear energy trap mechanism, referring to Fig. 8.Rotor-support-foundation system
Vibration suppressioning effect figure in the case where nonlinear energy trap of the present invention has 3 kinds of gap mated conditions, it is comprehensive referring to Fig. 9 and Figure 10.
Bearing assembly is cooperated by weak separation spring 9 and absorbing protonatomic mass block 5, and connection component is connected and fixed ring 12 and absorbing
Protonatomic mass block 5, fixed frame 2 are fixed in rack 14 by fastening bolt 3, are grounded, illustrate that nonlinear energy trap ontology exists
It is not rotated together with rotor in the course of work.
The length of connecting rod 4 and piecewise linearity rigidity bar 6 among fixed ring 12 and absorbing protonatomic mass block 5, can pass through rotation
Dynamic nut 1 changes in a certain range.The rigidity of bump leveller ontology is further adjusted.
The diameter of 4 connecting rods 4 is identical, and the diameter of 4 piecewise linearity rigidity bars 6 differs, and is ladder shaft-like.
Nonlinear energy trap ontology is as shown in Fig. 2, the connection component between absorbing protonatomic mass block 5 and fixed ring 12 is to realize
The pith of fit non-linear rigidity, connecting rod 4 are fixed on one by nut 1 with absorbing protonatomic mass block 5 and fixed ring 12 respectively
It rises.Piecewise linearity rigidity bar 6 is fixed together with fixed ring 12 by nut 1, forms gap with the mesopore of absorbing protonatomic mass block 5
Cooperation, the big piecewise linearity rigidity bar 6 of rigidity correspond to the mesopore that diameter is big on absorbing protonatomic mass block 5.
The fixed frame 2 plays fixed nonlinear energy trap ontology and it is avoided to rotate together with axis 13, with rack 14
Cooperation, embodies ground connection property.
The length of connecting rod 4 and piecewise linearity rigidity bar 6 between absorbing protonatomic mass block 5 and fixed ring 12, passes through turn
Nut 1 can change in a certain range, can effectively adjust the rigidity of bump leveller ontology；
By replacing the diameter of different 5 adjustable berth lyriform pores of absorbing protonatomic mass block and the quality of absorbing protonatomic mass block 5, make
The clearance fit that fitting forms non-linear rigidity is adjustable, and then also can control the rigidity of nonlinear energy trap ontology；
44 diameters of connecting rod in connection component are identical, are installed in parallel, and 46 diameters of piecewise linearity rigidity bar differ, and
Connection intersects installation, passes through point of different groups of replacement (the fitting rule of piecewise linearity is strong and weak different, but is all a cube rule variation)
Section linear rigidity bar 6, forms different clearance fits from absorbing protonatomic mass block 5, makes non-linear cube of variable rigidity being fitted to,
And then it also can control the rigidity of nonlinear energy trap ontology.
When nonlinear energy trap of the present invention work, vibration force is passed through into bearing assembly and weak separation after vibration of rotor system
Spring 9 passes to absorbing protonatomic mass block 5, and connecting rod 4 is driven to vibrate, further absorbing protonatomic mass block 5 and 4 piecewise linearity rigidity
Bar 6 is in contact collision, and then 5 Dynamic Absorption vibration of rotor system power energy of absorbing protonatomic mass block.
During this body running of nonlinear energy trap, this clearance fit forms piecewise linearity rigidity, is fitted non-thread
Property cube rigidity.
The diameter of connecting rod 4, the diameter of piecewise linearity rigidity bar 6, the diameter of mesopore on absorbing protonatomic mass block 5 and suction
The quality of oscillator mass block 5, these parameters can have variation not of the same race by calculating appropriate, and then can be designed different sheets
Invention nonlinear energy trap body part can satisfy vibration of the rotor-support-foundation system under different working conditions.
As shown in figure 5, multiple circular holes are distributed on absorbing protonatomic mass block 5, wherein 4 connecting holes are uniformly distributed, diameter
Equal, for being connected with 4 connecting rods 4, there are also 4 equally distributed mesopores of diameters difference for same circumference, respectively with
6 corresponding matching of piecewise linearity rigidity bar, and diameter is bigger, the rigidity of the piecewise linearity rigidity bar 6 of corresponding matching is bigger.Absorbing
It is fixed together with 4 orthogonal location holes on bearing holder (housing, cover) 8 that 4 orthogonal location holes are provided on the inner wall of mass block 5
The 4 weak separation springs 9 in position.
Illustrate the mechanism of piecewise linearity rigidity fit non-linear cube rigidity in conjunction with Fig. 8：One has Nonlinear Cubic
The relationship of spring, reaction force and rigidity is y=kx3, by figure it can be seen that fitting effect is very good, illustrate piecewise linearity rigidity
The validity of fit non-linear cube rigidity, also from the reasonability of side illustration the design.
The present embodiment target is to inhibit the vibration of rotating machinery core component rotor-support-foundation system, can be seen referring to Fig. 9 and Figure 10
Out, as nonlinear energy trap of the present invention is mounted on rotor-support-foundation system, the vibration of rotor-support-foundation system is decreased obviously, with subtracting for gap
Small, vibration suppression rate increases.And there is vibration suppression effect on the frequency band of different in width, and can be different and adaptive with fit clearance
Variation.Show the wideband vibration suppression characteristic of nonlinear energy trap of the present invention, and significant effect.Integral-rotation machinery can be reduced to set
Standby failure at runtime, makes up the deficiency of current vibration suppression technology.
A kind of grounding type nonlinear energy trap for inhibiting vibration of rotor system of the present invention inhibits the process of vibration of rotor system
It is as follows：
When nonlinear energy trap of the present invention work, vibration force is passed through into bearing assembly and weak separation after vibration of rotor system
Spring 9 passes to absorbing protonatomic mass block 5, and connecting rod 4 is driven to vibrate, further absorbing protonatomic mass block 5 and 4 piecewise linearity rigidity
Bar 6 is in contact collision, and then 5 Dynamic Absorption vibration of rotor system power energy of absorbing protonatomic mass block.
Detailed process is as follows：
When rotor-support-foundation system rotation, to vibrate in too small situation, vibration force passes to absorbing protonatomic mass block 5 by bearing assembly,
Connecting rod 4 is driven to vibrate, the vibration amplitude of connecting rod 4 is less than the phase of piecewise linearity rigidity bar 6 and 5 mesopore of absorbing protonatomic mass block
To gap, piecewise linearity rigidity bar 6 is not contacted with absorbing protonatomic mass block 5 at this time, only connecting rod 4 and 5 phase of absorbing protonatomic mass block
It is cooperatively connected.The ontology of this kind of nonlinear energy trap is equivalent to a linear dynamic vibration absorber at this time, and inhibition of vibration is not very
Obviously；
When vibrating excessive, the gap of the lesser bar of rigidity and 5 minor diameter of absorbing protonatomic mass block in piecewise linearity rigidity bar 6
Hole is in contact collision, with second, third root, and the 4th piecewise linearity rigidity bar 6 and 5 contact-impact of absorbing protonatomic mass block,
And then 5 Dynamic Absorption vibration of rotor system power energy of absorbing protonatomic mass block.
In conclusion explanation described above is only a kind of rotor-support-foundation system power using nonlinear energy trap mechanism of the present invention
The preferred embodiment of bump leveller is not intended to limit right protection range of the invention.It is all in spirit and original of the invention
Within then, any modifications, equivalent replacements, and improvements etc. done, should be included in patent right protection range of the invention it
It is interior.
Claims (8)
1. a kind of grounding type nonlinear energy trap for inhibiting vibration of rotor system, which is characterized in that the nonlinear energy trap packet
Include two parts of nonlinear energy trap ontology and fixed frame；
The nonlinear energy trap ontology includes the bearing assembly matched with rotor-support-foundation system, and with fixed ring (12) and absorbing
The connection component of protonatomic mass block (5) cooperation；
The rotor-support-foundation system includes disk (7) and axis (13)；The bearing assembly includes bearing (10), bearing holder (housing, cover) (8) and axle sleeve
(11), axle sleeve (11) covers on axis (13), and bearing (10) covers on axle sleeve (11), is equipped with bearing holder (housing, cover) (8) on the outside of bearing (10), axis
Bearing sleeve (8) is connect by weak separation spring (9) with absorbing protonatomic mass block (5)；The effect of the axle sleeve (11) is to prevent non-thread performance
Measure the axial float of trap ontology；
The connection component includes 4 connecting rods (4) and 4 piecewise linearity rigidity bars (6), and the connecting rod (4) passes through nut
Gu being fixedly connected with absorbing protonatomic mass block (5) and fixed ring (12), piecewise linearity rigidity bar (6) one end passes through nut and fixed ring
(12) it is fixedly connected, the other end forms clearance fit with the mesopore of absorbing protonatomic mass block (5) and connect；
The same circumference of the absorbing protonatomic mass block (5) is equipped with connecting hole and mesopore；Connecting hole is the equal intersection of 4 diameters
The circular hole of distribution；Mesopore is the circular hole of 4 diameters cross-distributions such as not, is equipped with respectively in the connecting hole in connection component
Connecting rod (4)；Piecewise linearity rigidity bar (6) is equipped in mesopore.
The fixed frame (2) is fixed on rack (14), and the affixed nonlinear energy trap ontology of the other end avoids nonlinear energy trap
Ontology is rotated together with axis (13), and the both ends and shaft end support base (15) of axis (13) are cooperatively connected.
2. a kind of grounding type nonlinear energy trap for inhibiting vibration of rotor system as described in claim 1, which is characterized in that Gu
Determine ring (12) and is equipped with the through-hole being cooperatively connected with connection component on the same circumference.
3. a kind of grounding type nonlinear energy trap for inhibiting vibration of rotor system as described in claim 1, which is characterized in that inhale
4 orthogonal location holes are provided on the inner wall of oscillator mass block (5), bearing holder (housing, cover) (8) is equipped with 4 orthogonal positioning
4 weak separation springs (9) are located between absorbing protonatomic mass block (5) and bearing holder (housing, cover) (8) by hole.
4. a kind of grounding type nonlinear energy trap for inhibiting vibration of rotor system as described in claim 1, which is characterized in that institute
Weak separation spring (9) are stated, plays the role of connecting rotor-support-foundation system and perhaps nonlinear energy trap ontology, allows nonlinear energy trap sheet
The disturbance of body circumferential direction.
5. a kind of grounding type nonlinear energy trap for inhibiting vibration of rotor system as described in claim 1, which is characterized in that axis
Contain bearing (10) inside bearing assembly, realizes when nonlinear energy trap ontology when absorbing vibration of rotor system not with axis (13) one
Play rotation；
Bearing assembly contains axle sleeve (11), and the effect of the axle sleeve (11) is to avoid bump leveller ontology with axis (13) in axial float.
6. a kind of grounding type nonlinear energy trap for inhibiting vibration of rotor system as described in claim 1, which is characterized in that
When nonlinear energy trap of the present invention work, vibration force is passed through into bearing assembly and weak separation spring after vibration of rotor system
(9) absorbing protonatomic mass block (5) is passed to, connecting rod (4) vibration, further absorbing protonatomic mass block (5) and 4 piecewise linearities are driven
Rigidity bar (6) is in contact collision, and then absorbing protonatomic mass block (5) Dynamic Absorption vibration of rotor system power energy.
7. a kind of grounding type nonlinear energy trap for inhibiting vibration of rotor system as described in claim 1, which is characterized in that inhale
The quality of oscillator mass block (5) can be replaced.
8. a kind of grounding type nonlinear energy trap for inhibiting vibration of rotor system as described in claim 1, which is characterized in that inhale
Oscillator mass block (5) 4 connecting holes on the same circumference and 4 mesopores are in cross arrangement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810793804.XA CN108825718B (en) | 2018-07-19 | 2018-07-19 | Grounded nonlinear energy trap for inhibiting vibration of rotor system |
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| CN201810793804.XA CN108825718B (en) | 2018-07-19 | 2018-07-19 | Grounded nonlinear energy trap for inhibiting vibration of rotor system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505922A (en) * | 2018-11-26 | 2019-03-22 | 东北大学 | A kind of multistable nonlinear energy trap with piecewise linearity beam and permanent magnetism negative stiffness |
| CN110230661A (en) * | 2019-06-12 | 2019-09-13 | 东北大学 | A kind of nonlinear energy trap with piecewise linearity beam applied to rotor-support-foundation system |
| CN114465443A (en) * | 2022-02-16 | 2022-05-10 | 东北大学 | Permanent magnet nonlinear energy trap for restraining torsional vibration based on magnetic repulsion principle |
| CN115027699A (en) * | 2022-06-10 | 2022-09-09 | 哈尔滨工业大学 | Nonlinear energy trap and spacecraft |
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