CN106870621A - A kind of self-adaptation type magnetic flow liquid torsional vibration damper - Google Patents
A kind of self-adaptation type magnetic flow liquid torsional vibration damper Download PDFInfo
- Publication number
- CN106870621A CN106870621A CN201710152906.9A CN201710152906A CN106870621A CN 106870621 A CN106870621 A CN 106870621A CN 201710152906 A CN201710152906 A CN 201710152906A CN 106870621 A CN106870621 A CN 106870621A
- Authority
- CN
- China
- Prior art keywords
- shock absorber
- torsional vibration
- vibration damper
- flow liquid
- magnet coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 39
- 239000006096 absorbing agent Substances 0.000 claims abstract description 38
- 230000035939 shock Effects 0.000 claims abstract description 35
- 238000013016 damping Methods 0.000 claims abstract description 18
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 238000000518 rheometry Methods 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 229920002545 silicone oil Polymers 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
-
- 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
- F16F15/16—Suppression of vibrations in rotating systems by making use of members moving with the system using a fluid or pasty material
- F16F15/161—Suppression of vibrations in rotating systems by making use of members moving with the system using a fluid or pasty material characterised by the fluid damping devices, e.g. passages, orifices
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present invention relates to a kind of self-adaptation type magnetic flow liquid torsional vibration damper, including the shock absorber casing being fixedly connected with bent axle, it is set in shock absorber casing outside and the coil brace being fixedly connected with motor body, it is wrapped in the magnet coil on coil brace, the current controller electrically connected with magnet coil and the magnetorheological fluid damp unit for being along the circumferential direction laid on shock absorber casing and being used cooperatively with magnet coil, under in working order, described current controller regulation solenoid current size, magnet coil generates the magnetic field of respective strengths, change the frictional damping of magnetorheological fluid damp unit with this, it is used to consume the energy of twisting vibration, avoid resonance.Compared with prior art, overall structure of the present invention is simple, compact, small volume, and good airproof performance, frictional damping is adjustable, and adjustment torque effect is good, safe and reliable.
Description
Technical field
The invention belongs to absorber technical field, it is related to a kind of self-adaptation type magnetic flow liquid torsional vibration damper.
Background technology
Magnetic flow liquid functional composite material, different types of load is dispersed in by by micron or nano level soft magnetic particles
Be prepared from body, due to its rheological property can it is continuous with externally-applied magnetic field, quick, reversibly change, magnetosensitive intelligent soft material
Obtain widely applying and causing increasing concern in fields such as building, vibration control and auto industrys.
Bent axle is the axle with certain elasticity and gyrating mass, is a kind of elasticity of torsion system, itself is had certain
Intrinsic frequency.Each crank throw of bent axle will occur size and side relative to the flywheel of axle back segment during engine works
To periodically variable Relative Vibration, that is, torsional oscillation.Torsion frequency is equal with the frequency of crankshaft system or be its integral multiple
When, will resonate, this can undoubtedly influence transmission of crankshaft precision, and the fracture of bent axle is caused when serious.
Torsional vibration damper is mounted in crankshaft front end, and when bent axle twists vibration, the angular amplitude of crankshaft front end is maximum, and
Torsion vibration absorber is together rotated.Twisting vibration mass is then actual equivalent to a mini flywheel because rotary inertia is larger, its
Rotate instantaneous angular velocity also more uniform than shock absorber casing many.So, inertia mass is then by the viscous friction damping institute band of silicone oil
It is dynamic.Because inertia mass is very big, therefore it does uniform rotation, and relative fortune is then produced between inertia mass and shock absorber casing
It is dynamic.The vibrational energy of bent axle is consumed by the interior frictional damping of silicone oil, reduces whole crankshaft torsion amplitude, bent axle resonance speed
Rotating speed area higher is shifted to, so as to avoid occurring resonance in the conventional range of speeds.But traditional silicone oil is frictionally reversed
It is non-adjustable to there is frictional damping in shock absorber, and viscosity declines fast, the narrow shortcoming in regulating frequency region after temperature rise.
The Chinese utility model patent of Application No. 201420519913.X discloses a kind of self-supplied magnetic current liquid and reverses
Shock absorber, is provided with the quality loop that can be rotated around annular housing inner ring side wall in annular housing, the residue in annular housing is empty
Between filled with magnetic flow liquid, annular housing outside is provided with two ends point and penetrates arc magnetic conductive part inside annular housing, arc magnetic conduction
Magnet exciting coil is wound with part, rotor coil rotates cutting magnetic induction line and produces under rotating shaft drive in the magnetic field that magnetic pole of the stator is produced
Raw electric current is powered to magnet exciting coil, realizes the self-powered of torsional vibration damper.
The Chinese invention patent of Application No. 201210528018.X discloses a kind of magneto-rheological torsion damper, main bag
Stator, rotor, screw propulsion rod and shock absorber cylinder body are included, the input of magneto-rheological torsion damper is set by shaft coupling with load
Standby connection.Multistage magnet coil is wound with stator, the groove or projection matched with rotor, and and inner sleeve are machined with stator outer wall
There is certain gap between cylinder；Rotor drum inwall is machined with the projection or groove matched with stator；With propeller structure
Pushing ram, rotor and screw propulsion rod are interconnected by terminal pad；Shock absorber cylinder body is by outer sleeve, sealed bearings and the lid of left and right two
Plate is constituted, and shock absorber cylinder body forms certain gap with inner sleeve；Magnetic flow liquid is full of between stator, rotor and shock absorber cylinder body
Gap.
The Chinese invention patent of Application No. 200910221804.3 discloses a kind of magnetic flowing deformation torsional vibration damping, and it connects
It is connected between power-equipment and load equipment, including magneto-rheological torsion damper, angular-rate sensor and ECU；It is magnetorheological
One end of torsional vibration damper is connected with power-equipment transmission, and the other end is driven with angular-rate sensor by shaft coupling and is connected, angle
Velocity sensor is also driven with load equipment by shaft coupling and is connected, and ECU is connected on angular-rate sensor.It is therein
Magneto-rheological torsion damper includes rotor, stator and magnetic flow liquid, and rotor is movably embedded into stator and is provided between stator
Gap, magnetic flow liquid is wound with energization magnet exciting coil full of the gap between rotor and stator on stator.
The present invention has essential distinction on structure ＆ working mechanism with above-mentioned patent.Frictional damping of the invention is by matter
Gauge block and shock absorber casing, the friction generation between magnetic flow liquid, rather than rotor, stator, magnetic described in above-mentioned patented technology
Generated between rheology liquid.And in above-mentioned patented technology, sealing structure being constituted between rotor, stator, construction is complicated.The present invention
In, coil is wrapped on coil brace, mass, shock absorber casing, annular side plate composition annular seal space, and is full of in annular seal space
Magnetic flow liquid, structure design is simpler, compact, and sealing property more preferably, more stablize by work.
The content of the invention
The purpose of the present invention is exactly that a kind of simple structure, tight is provided for the defect for overcoming above-mentioned prior art to exist
Gather, can adjust frictional damping, resonance, safe and reliable magnetic flow liquid torsional vibration damper can be prevented effectively from.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of self-adaptation type magnetic flow liquid torsional vibration damper, including be fixedly connected with bent axle shock absorber casing, be set in
Shock absorber casing outside and the coil brace being fixedly connected with motor body, the magnet coil that is wrapped on coil brace and
Current controller and be along the circumferential direction laid on shock absorber casing and make with magnet coil cooperation that magnet coil is electrically connected
Magnetorheological fluid damp unit, in working order under, described current controller regulation solenoid current size, electromagnetic wire
The magnetic field of circle generation respective strengths, the frictional damping of magnetorheological fluid damp unit is changed with this, is used to consume twisting vibration
Energy, it is to avoid resonance.
Annular groove is along the circumferential direction offered on described shock absorber casing, annular groove top is provided with annular side
Plate, described annular groove encloses and is set as annular seal space jointly with annular side plate.
Described magnetorheological fluid damp unit includes the inertial mass being arranged in annular seal space and is filled in inertia matter
Magnetic flow liquid between gauge block and annular side plate.
The liquid injection port for irrigating magnetic flow liquid is offered in described annular side plate.
Described coil brace includes being set in the supporting plate on the outside of shock absorber casing and is separately positioned on supporting plate two
First wing plate and the second wing plate of side, described supporting plate are enclosed and are set as winding electromagnetism jointly with the first wing plate, the second wing plate
The containing groove of coil.
Support nut hole is offered on the first described wing plate, the first clamping screw is provided with the support nut hole, it is described
Coil brace be fixedly connected with motor body by the first clamping screw.
The width of the wing plates of width G T.GT.GT second of the first described wing plate.
On described shock absorber casing with the center of circle of shock absorber casing as symmetrical centre is offered multipair case nut hole, should
The second clamping screw is provided with case nut hole, described shock absorber casing is fixedly connected by the second clamping screw with bent axle.
The torsional vibration damper frictional compared to traditional silicone oil, magnetic flow liquid torsional vibration damper of the present invention is using magnetorheological
Liquid substitutes silicone oil.According to the size of different torsional oscillations, adjusted by current controller and be passed through the correspondingly sized electric current of magnet coil, from
And generate the magnetic field of respective strengths.Magnetic flow liquid under the magnetic field condition of respective strengths, with corresponding frictional damping, so as to
Optimal effect consumes the energy of twisting vibration, it is to avoid resonance.
Compared with prior art, the invention has the characteristics that：
1) frictional damping is adjustable, and using magnetic flow liquid, under different magnetic field intensities, the frictional damping of torsional vibration damper can
Adjust, high working efficiency；
2) working stability, using the new material of magnetic flow liquid, influence of the operating temperature to its viscosity is small, working stability；
3) inertial mass and torsional vibration damper housing are cemented together by magnetic flow liquid, compact conformation；
4) it is easy to lead, coil brace is fixed on motor body, easy-to-connect operation is more convenient, safely may be used
Lean on.
Brief description of the drawings
Fig. 1 is main structure diagram of the present invention；
Fig. 2 is cross-sectional view at A-A in Fig. 1；
Fig. 3 is the cross-sectional view of center line coil support of the present invention；
Fig. 4 is the cross-sectional view of shock absorber casing in the present invention；
Fig. 5 is the cross-sectional view of inertial mass in the present invention；
Fig. 6 is the cross-sectional view of annular side plate in the present invention；
Description of symbols in figure：
1-coil brace, 11-supporting plate, the 12-the first wing plate, the 13-the second wing plate, 2-shock absorber casing, 3-
Frame nut bore, 4-annular side plate, 5-inertial mass, 6-case nut hole, 7-magnetic flow liquid, 8-magnet coil, 9-
Liquid injection port, 10-annular groove.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment：
As shown in figures 1 to 6, a kind of self-adaptation type magnetic flow liquid torsional vibration damper, including the shock absorber being fixedly connected with bent axle
Housing 2, be set in the outside of shock absorber casing 2 and be fixedly connected with motor body coil brace 1, be wrapped in coil brace 1
On the current controller that is electrically connected with magnet coil 8 of magnet coil 8 and be along the circumferential direction laid on shock absorber casing 2
And the magnetorheological fluid damp unit used cooperatively with magnet coil 8, in working order under, current controller regulation magnet coil 8
Size of current, magnet coil 8 generates the magnetic field of respective strengths, and the frictional damping of magnetorheological fluid damp unit is changed with this, uses
To consume the energy of twisting vibration, it is to avoid resonance.
Annular groove 10 is along the circumferential direction offered on shock absorber casing 2, the top of annular groove 10 is provided with annular side plate
4, annular groove 10 encloses and is set as annular seal space jointly with annular side plate 4.
Magnetorheological fluid damp unit includes the inertial mass 5 being arranged in annular seal space and is filled in inertial mass 5
With the magnetic flow liquid 7 between annular side plate 4.The liquid injection port 9 for irrigating magnetic flow liquid 7 is offered in annular side plate 4.
Coil brace 1 includes being set in the supporting plate 11 in the outside of shock absorber casing 2 and is separately positioned on 11 liang of supporting plate
First wing plate 12 and the second wing plate 13 of side, supporting plate 11 are enclosed and are set as winding jointly with the first wing plate 12, the second wing plate 13
The containing groove of magnet coil 8.Support nut hole 3 is offered on first wing plate 12, the first locking is provided with the support nut hole 3
Bolt, coil brace 1 is fixedly connected by the first clamping screw with motor body.The wing plates of width G T.GT.GT second of the first wing plate 12
13 width.
On shock absorber casing 2 with the center of circle of shock absorber casing 2 as symmetrical centre is offered multipair case nut hole 6, the shell
The second clamping screw is provided with body nut hole 6, shock absorber casing 2 is fixedly connected by the second clamping screw with bent axle.
The above-mentioned description to embodiment is to be understood that and use invention for ease of those skilled in the art.
Person skilled in the art obviously can easily make various modifications to these embodiments, and described herein general
Principle is applied in other embodiment without by performing creative labour.Therefore, the invention is not restricted to above-described embodiment, ability
Field technique personnel announcement of the invention, does not depart from improvement that scope made and modification all should be of the invention
Within protection domain.
Claims (8)
1. a kind of self-adaptation type magnetic flow liquid torsional vibration damper, it is characterised in that including the damper shelf being fixedly connected with bent axle
Body (2), be set in shock absorber casing (2) outside and be fixedly connected with motor body coil brace (1), be wrapped in coil branch
Current controller and be along the circumferential direction laid in vibration damping that magnet coil (8) on frame (1) is electrically connected with magnet coil (8)
The magnetorheological fluid damp unit used cooperatively on device housing (2) and with magnet coil (8), in working order under, described electric current
Controller adjusts magnet coil (8) size of current, and magnet coil (8) is generated the magnetic field of respective strengths, changed with this magnetorheological
The frictional damping of liquid damping unit, is used to consume the energy of twisting vibration, it is to avoid resonance.
2. a kind of self-adaptation type magnetic flow liquid torsional vibration damper according to claim 1, it is characterised in that described vibration damping
Annular groove (10) is along the circumferential direction offered on device housing (2), the annular groove (10) top is provided with annular side plate (4), institute
The annular groove (10) stated encloses and is set as annular seal space jointly with annular side plate (4).
3. a kind of self-adaptation type magnetic flow liquid torsional vibration damper according to claim 2, it is characterised in that described magnetic current
Becoming liquid damping unit includes the inertial mass (5) being arranged in annular seal space and is filled in inertial mass (5) and annular side
Magnetic flow liquid (7) between plate (4).
4. a kind of self-adaptation type magnetic flow liquid torsional vibration damper according to claim 2, it is characterised in that described annular
The liquid injection port (9) for irrigating magnetic flow liquid (7) is offered on side plate (4).
5. a kind of magnetic rheology elastic body torsional vibration damper according to claim 1, it is characterised in that described coil brace
(1) the first of supporting plate (11) both sides are separately positioned on including the supporting plate (11) that is set on the outside of shock absorber casing (2) and
Wing plate (12) and the second wing plate (13), described supporting plate (11) are enclosed and are set as jointly with the first wing plate (12), the second wing plate (13)
Containing groove for winding magnet coil (8).
6. a kind of magnetic rheology elastic body torsional vibration damper according to claim 5, it is characterised in that the first described wing plate
(12) support nut hole (3) is offered on, the first clamping screw, described coil brace (1) is provided with the support nut hole (3)
It is fixedly connected with motor body by the first clamping screw.
7. a kind of magnetic rheology elastic body torsional vibration damper according to claim 6, it is characterised in that the first described wing plate
(12) width of the wing plates of width G T.GT.GT second (13).
8. a kind of magnetic rheology elastic body torsional vibration damper according to any one of claim 1 to 7, it is characterised in that described
Shock absorber casing (2) on the center of circle of shock absorber casing (2) as symmetrical centre is offered multipair case nut hole (6), the shell
The second clamping screw is provided with body nut hole (6), described shock absorber casing (2) is fixed by the second clamping screw and bent axle and connected
Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710152906.9A CN106870621B (en) | 2017-03-15 | 2017-03-15 | A kind of self-adaptation type magnetorheological fluid torsional vibration damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710152906.9A CN106870621B (en) | 2017-03-15 | 2017-03-15 | A kind of self-adaptation type magnetorheological fluid torsional vibration damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106870621A true CN106870621A (en) | 2017-06-20 |
| CN106870621B CN106870621B (en) | 2019-01-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710152906.9A Expired - Fee Related CN106870621B (en) | 2017-03-15 | 2017-03-15 | A kind of self-adaptation type magnetorheological fluid torsional vibration damper |
Country Status (1)
| Country | Link |
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| CN (1) | CN106870621B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630596A (en) * | 2018-12-26 | 2019-04-16 | 嘉兴学院 | One kind rotatably damping adjustable silicone oil-magnetorheological torsional vibration damper |
| CN109654162A (en) * | 2019-02-01 | 2019-04-19 | 青岛理工大学 | Actively compound variable damping control device for pivoting |
| CN112032240A (en) * | 2020-08-05 | 2020-12-04 | 华东交通大学 | Magneto-rheological torsion damper |
| CN114909425A (en) * | 2022-04-27 | 2022-08-16 | 宁波中策动力机电集团有限公司 | Variable-damping vibration attenuation mechanism of high-power marine engine and method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5829319A (en) * | 1996-10-04 | 1998-11-03 | Vibratech, Inc. | Magneto-rheological torsional vibration damper |
| US20070137955A1 (en) * | 2005-11-02 | 2007-06-21 | Clay Maranville | Magnetorheological damping device for reduction or elimination of vibration in steering systems |
| CN102052423A (en) * | 2009-11-10 | 2011-05-11 | 上海工程技术大学 | Magnetorheological torsion vibration damper |
| JP2014052044A (en) * | 2012-09-07 | 2014-03-20 | Tohoku Univ | Mr damper |
| CN204164255U (en) * | 2014-09-04 | 2015-02-18 | 长安大学 | A kind of self-supplied magnetic current liquid torsional vibration damper |
| CN204253727U (en) * | 2014-09-25 | 2015-04-08 | 长安大学 | The torsional vibration damper that a kind of damping is adjustable |
-
2017
- 2017-03-15 CN CN201710152906.9A patent/CN106870621B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5829319A (en) * | 1996-10-04 | 1998-11-03 | Vibratech, Inc. | Magneto-rheological torsional vibration damper |
| US20070137955A1 (en) * | 2005-11-02 | 2007-06-21 | Clay Maranville | Magnetorheological damping device for reduction or elimination of vibration in steering systems |
| CN102052423A (en) * | 2009-11-10 | 2011-05-11 | 上海工程技术大学 | Magnetorheological torsion vibration damper |
| JP2014052044A (en) * | 2012-09-07 | 2014-03-20 | Tohoku Univ | Mr damper |
| CN204164255U (en) * | 2014-09-04 | 2015-02-18 | 长安大学 | A kind of self-supplied magnetic current liquid torsional vibration damper |
| CN204253727U (en) * | 2014-09-25 | 2015-04-08 | 长安大学 | The torsional vibration damper that a kind of damping is adjustable |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630596A (en) * | 2018-12-26 | 2019-04-16 | 嘉兴学院 | One kind rotatably damping adjustable silicone oil-magnetorheological torsional vibration damper |
| CN109630596B (en) * | 2018-12-26 | 2020-09-11 | 嘉兴学院 | Rotary type damping-adjustable silicone oil-magnetorheological torsional vibration damper |
| CN109654162A (en) * | 2019-02-01 | 2019-04-19 | 青岛理工大学 | Actively compound variable damping control device for pivoting |
| CN109654162B (en) * | 2019-02-01 | 2024-04-12 | 青岛理工大学 | Active composite damping-variable rotation control device |
| CN112032240A (en) * | 2020-08-05 | 2020-12-04 | 华东交通大学 | Magneto-rheological torsion damper |
| CN114909425A (en) * | 2022-04-27 | 2022-08-16 | 宁波中策动力机电集团有限公司 | Variable-damping vibration attenuation mechanism of high-power marine engine and method thereof |
| CN114909425B (en) * | 2022-04-27 | 2023-08-08 | 宁波中策动力机电集团有限公司 | Variable damping vibration attenuation mechanism and method for high-power marine engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106870621B (en) | 2019-01-18 |
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Granted publication date: 20190118 |