CN106870621B - A kind of self-adaptation type magnetorheological fluid torsional vibration damper - Google Patents
A kind of self-adaptation type magnetorheological fluid torsional vibration damper Download PDFInfo
- Publication number
- CN106870621B CN106870621B CN201710152906.9A CN201710152906A CN106870621B CN 106870621 B CN106870621 B CN 106870621B CN 201710152906 A CN201710152906 A CN 201710152906A CN 106870621 B CN106870621 B CN 106870621B
- Authority
- CN
- China
- Prior art keywords
- magnetorheological fluid
- shock absorber
- self
- electromagnetic coil
- torsional vibration
- 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.)
- Expired - Fee Related
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- 239000012530 fluid Substances 0.000 title claims abstract description 42
- 239000006096 absorbing agent Substances 0.000 claims abstract description 31
- 230000035939 shock Effects 0.000 claims abstract description 28
- 238000013016 damping Methods 0.000 claims abstract description 17
- 230000008859 change Effects 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 229920002545 silicone oil Polymers 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 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
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 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
- 238000000518 rheometry Methods 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
Abstract
The present invention relates to a kind of self-adaptation type magnetorheological fluid torsional vibration dampers, including the shock absorber casing being fixedly connected with crankshaft, it is set in the coil brace being fixedly connected on the outside of shock absorber casing and with motor body, the electromagnetic coil being wrapped on coil brace, the current controller being electrically connected with electromagnetic coil and the magnetorheological fluid damp unit for being along the circumferential direction laid on shock absorber casing and being used cooperatively with electromagnetic coil, in the operating condition, the current controller adjusts solenoid current size, the magnetic field of electromagnetic coil generation respective strengths, change the frictional damping of magnetorheological fluid damp unit with this, to consume the energy of twisting vibration, it avoids resonating.Compared with prior art, overall structure of the present invention is simple, compact, small in size, and good airproof performance, frictional damping is adjustable, and adjustment torque effect is good, securely and reliably.
Description
Technical field
The invention belongs to absorber technical fields, are related to a kind of self-adaptation type magnetorheological fluid torsional vibration damper.
Background technique
Magnetorheological fluid functional composite material, by the way that micron or nanoscale soft magnetic particles are dispersed in different types of load
Be prepared in body, due to its rheological property can it is continuous with externally-applied magnetic field, quickly, reversibly change, magnetosensitive intelligent soft material
It is had been widely used in fields such as building, vibration control and auto industrys and causes more and more concerns.
Crankshaft is the axis with certain elasticity and gyrating mass, is a kind of elasticity of torsion system, itself is had certain
Intrinsic frequency.Relative to the flywheel of axis back segment size and side will occur for each crank throw of crankshaft during engine operation
To periodically variable Relative Vibration, that is, torsional oscillation.Torsion frequency is equal with the frequency of crankshaft system or is its integral multiple
When, it will resonate, this undoubtedly will affect transmission of crankshaft precision, and the fracture of crankshaft is caused when serious.
Torsional vibration damper is mounted in crankshaft front end, and when crankshaft, which twists, to be vibrated, the angular amplitude of crankshaft front end is maximum, and
Torsion vibration absorber rotates together.Twisting vibration mass block then because rotary inertia is larger it is practical be equivalent to a mini flywheel,
It is also more uniform than shock absorber casing more to rotate instantaneous angular velocity.In this way, inertia mass then damps institute's band by the viscous friction of silicone oil
It is dynamic.Since inertia mass is very big, uniform rotation is done, opposite fortune is then generated between inertia mass and shock absorber casing
It is dynamic.The vibrational energy of crankshaft is consumed by the interior frictional damping of silicone oil, reduces entire crankshaft torsion amplitude, crankshaft resonance speed
Higher revolving speed area is shifted to, to avoid resonating in the common range of speeds.But traditional silicone oil frictionally reverses
That there are frictional dampings is non-adjustable for damper, and viscosity decline is fast after temperature rise, adjusts the narrow disadvantage of frequency field.
Application No. is the Chinese utility model patents of 201420519913.X to disclose a kind of self-supplied magnetic current liquid torsion
Damper, the quality loop that can be rotated around annular housing inner ring side wall is equipped in annular housing, and annular chamber is intracorporal remaining empty
Between filled with magnetorheological fluid, both ends point are installed on the outside of annular housing and penetrate arc magnetic conductive part inside annular housing, arc magnetic conduction
Magnet exciting coil is wound on part, rotation cutting magnetic induction line produces rotor coil in the magnetic field that magnetic pole of the stator generates under shaft drive
Raw electric current is powered to magnet exciting coil, realizes the self-powered of torsional vibration damper.
Application No. is the Chinese invention patents of 201210528018.X to disclose a kind of magneto-rheological torsion damper, main to wrap
Stator, rotor, screw propulsion rod and damper cylinder body are included, the input terminal of magneto-rheological torsion damper is set by shaft coupling and load
Standby connection.It is wound with multistage electromagnetic coil on stator, is machined on stator outer wall and the matched groove of rotor or protrusion, and and inner sleeve
There are certain gaps between cylinder；Rotor drum inwall processing has and the matched protrusion of stator or groove；With propeller structure
Pushing ram, rotor and screw propulsion rod are interconnected by terminal pad；Damper cylinder body is by outer sleeve, sealing bearing and the lid of left and right two
Board group is at damper cylinder body and inner sleeve form certain gap；Magnetorheological fluid is full of between stator, rotor and damper cylinder body
Gap.
Application No. is 200910221804.3 Chinese invention patents to disclose a kind of magnetic flowing deformation torsional vibration damping, it connects
It connects between power-equipment and load equipment, including magneto-rheological torsion damper, angular-rate sensor and electronic control unit；It is magnetorheological
One end of torsional vibration damper is connected with power-equipment transmission, and the other end is connected by shaft coupling with angular-rate sensor transmission, angle
Velocity sensor also passes through shaft coupling and is connected with load equipment transmission, and electronic control unit is connected on angular-rate sensor.It is therein
Magneto-rheological torsion damper includes rotor, stator and magnetorheological fluid, and rotor is movably embedded into stator and is equipped between stator
Gap, magnetorheological fluid are wound with energization magnet exciting coil full of the gap between rotor and stator on stator.
The present invention has essential distinction with above-mentioned patent on structure & working mechanism.Frictional damping of the invention is to pass through matter
Gauge block and shock absorber casing, the friction between magnetorheological fluid generates, rather than rotor described in above-mentioned patented technology, stator, magnetic
It is generated between rheology liquid.And in above-mentioned patented technology, sealing structure is formed between rotor, stator, construction is complicated.The present invention
In, coil is wrapped on coil brace, and mass block, shock absorber casing, annular side plate form seal chamber, and be full of in seal chamber
Magnetorheological fluid, structure design is simpler, compact, and sealing performance is more preferable, works more stable.
Summary of the invention
It is simple, tight that it is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of structures
It gathers, frictional damping is adjusted, can effectively avoid resonating, safe and reliable magnetorheological fluid torsional vibration damper.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of self-adaptation type magnetorheological fluid torsional vibration damper, including be fixedly connected with crankshaft shock absorber casing, be set in
The coil brace that is fixedly connected on the outside of shock absorber casing and with motor body, the electromagnetic coil being wrapped on coil brace, with
The current controller and be along the circumferential direction laid on shock absorber casing and make with electromagnetic coil cooperation that electromagnetic coil is electrically connected
Magnetorheological fluid damp unit, in the operating condition, the current controller adjust solenoid current size, electromagnetic wire
Circle generates the magnetic field of respective strengths, changes the frictional damping of magnetorheological fluid damp unit with this, to consume twisting vibration
Energy avoids resonating.
Annular groove is along the circumferential direction offered on the shock absorber casing, annular side is equipped at the top of the annular groove
Plate, the annular groove and annular side plate are enclosed jointly is set as seal chamber.
The magnetorheological fluid damp unit includes the inertial mass being arranged in seal chamber and is filled in inertia matter
Magnetorheological fluid between gauge block and annular side plate.
The liquid injection port for magnetorheological fluid to be perfused is offered in the annular side plate.
The coil brace includes the support plate being set on the outside of shock absorber casing and is separately positioned on support plate two
The first wing plate and the second wing plate of side, the support plate and the first wing plate, the second wing plate are enclosed jointly and are set as winding electromagnetism
The containing groove of coil.
Support nut hole is offered on first wing plate, the first clamping screw is equipped in the support nut hole, it is described
Coil brace be fixedly connected by the first clamping screw with motor body.
The width of the second wing plate of width G T.GT.GT of first wing plate.
Multipair case nut hole is offered by symmetrical centre of the center of circle of shock absorber casing on the shock absorber casing, it should
The second clamping screw is equipped in case nut hole, the shock absorber casing is fixedly connected by the second clamping screw with crankshaft.
The torsional vibration damper frictional compared to traditional silicone oil, magnetorheological fluid torsional vibration damper of the present invention is using magnetorheological
Liquid substitutes silicone oil.According to the size of different torsional oscillations, electromagnetic coil electric current of corresponding size is passed through by current controller adjusting, from
And generate the magnetic field of respective strengths.Magnetorheological fluid has corresponding frictional damping under the magnetic field condition of respective strengths, thus with
The energy of optimal effect consumption twisting vibration, avoids resonating.
Compared with prior art, the invention has the characteristics that:
1) frictional damping is adjustable, and using magnetorheological fluid, under different magnetic field strengths, the frictional damping of torsional vibration damper can
It adjusts, work efficiency is high；
2) the operation is stable, using the new material of magnetorheological fluid, influence of the operating temperature to its viscosity is small, the operation is stable；
3) inertial mass and torsional vibration damper shell are cemented together by magnetorheological fluid, compact-sized；
4) it is easy to lead, coil brace is fixed on motor body, and easy-to-connect operation is more convenient, safely may be used
It leans on.
Detailed description of the invention
Fig. 1 is schematic view of the front view of the present invention；
Fig. 2 is the schematic diagram of the section structure at A-A in Fig. 1；
Fig. 3 is the schematic diagram of the section structure of middle line coil support of the present invention；
Fig. 4 is the schematic diagram of the section structure of shock absorber casing in the present invention；
Fig. 5 is the schematic diagram of the section structure of inertial mass in the present invention；
Fig. 6 is the schematic diagram of the section structure of annular side plate in the present invention；
Description of symbols in figure:
1-coil brace, 11-support plates, the 12-the first wing plate, the 13-the second wing plate, 2-shock absorber casings, 3-
Frame nut bore, 4-annular side plates, 5-inertial mass, 6-case nut holes, 7-magnetorheological fluids, 8-electromagnetic coils, 9-
Liquid injection port, 10-annular grooves.
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 magnetorheological fluid torsional vibration damper, including the damper being fixedly connected with crankshaft
Shell 2, is wrapped in coil brace 1 at the coil brace 1 for being set in 2 outside of shock absorber casing and being fixedly connected with motor body
On electromagnetic coil 8, the current controller that is electrically connected with electromagnetic coil 8 and be along the circumferential direction laid on shock absorber casing 2
And the magnetorheological fluid damp unit being used cooperatively with electromagnetic coil 8, in the operating condition, current controller adjusts electromagnetic coil 8
Size of current, electromagnetic coil 8 are generated the magnetic field of respective strengths, are changed the frictional damping of magnetorheological fluid damp unit with this, are used
To consume the energy of twisting vibration, avoid resonating.
Annular groove 10 is along the circumferential direction offered on shock absorber casing 2, and annular side plate is equipped at the top of the annular groove 10
4, annular groove 10 and annular side plate 4 enclose jointly and are set as seal chamber.
Magnetorheological fluid damp unit includes the inertial mass 5 being arranged in seal chamber and is filled in inertial mass 5
Magnetorheological fluid 7 between annular side plate 4.The liquid injection port 9 for magnetorheological fluid 7 to be perfused is offered in annular side plate 4.
Coil brace 1 includes being set in the support plate 11 in the outside of shock absorber casing 2 and being separately positioned on 11 liang of support plate
The first wing plate 12 and the second wing plate 13 of side, support plate 11 are enclosed jointly and are set as winding with the first wing plate 12, the second wing plate 13
The containing groove of electromagnetic coil 8.Support nut hole 3 is offered on first wing plate 12, the first locking is equipped in the support nut hole 3
Bolt, coil brace 1 are fixedly connected by the first clamping screw with motor body.The second wing plate of width G T.GT.GT of first wing plate 12
13 width.
Multipair case nut hole 6, the shell are offered by symmetrical centre of the center of circle of shock absorber casing 2 on shock absorber casing 2
The second clamping screw is equipped in body nut hole 6, shock absorber casing 2 is fixedly connected by the second clamping screw with crankshaft.
The above description of the embodiments is intended to facilitate ordinary skill in the art to understand and use the invention.
Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein general
Principle is applied in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, ability
Field technique personnel announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be of the invention
Within protection scope.
Claims (7)
1. a kind of self-adaptation type magnetorheological fluid torsional vibration damper, which is characterized in that including the damper shelf being fixedly connected with crankshaft
Body (2) is set in the coil brace (1) being fixedly connected on the outside of shock absorber casing (2) and with motor body, is wrapped in coil branch
Electromagnetic coil (8) on frame (1), the current controller being electrically connected with electromagnetic coil (8) and along the circumferential direction it is laid in vibration damping
The magnetorheological fluid damp unit being used cooperatively on device shell (2) and with electromagnetic coil (8), in the operating condition, the electric current
Controller adjusts electromagnetic coil (8) size of current, and electromagnetic coil (8) generates the magnetic field of respective strengths, magnetorheological to change with this
The frictional damping of liquid damping unit avoids resonating to consume the energy of twisting vibration；
The coil brace (1) includes being set in the support plate (11) on the outside of shock absorber casing (2) and being separately positioned on branch
First wing plate (12) and the second wing plate (13) of fagging (11) two sides, the support plate (11) and the first wing plate (12), second
Wing plate (13) encloses the containing groove being set as winding electromagnetic coil (8) jointly.
2. a kind of self-adaptation type magnetorheological fluid torsional vibration damper according to claim 1, which is characterized in that the vibration damping
Annular groove (10) are along the circumferential direction offered on device shell (2), are equipped with annular side plate (4) at the top of the annular groove (10), institute
The annular groove (10) and annular side plate (4) stated enclose jointly is set as seal chamber.
3. a kind of self-adaptation type magnetorheological fluid torsional vibration damper according to claim 2, which is characterized in that the magnetic current
Become liquid damping unit to include the inertial mass (5) being arranged in seal chamber and be filled in inertial mass (5) and annular side
Magnetorheological fluid (7) between plate (4).
4. a kind of self-adaptation type magnetorheological fluid torsional vibration damper according to claim 2, which is characterized in that the annular
The liquid injection port (9) for magnetorheological fluid (7) to be perfused is offered on side plate (4).
5. a kind of self-adaptation type magnetorheological fluid torsional vibration damper according to claim 1, which is characterized in that described first
Support nut hole (3) are offered on wing plate (12), and the first clamping screw, the coil branch are equipped in the support nut hole (3)
Frame (1) is fixedly connected by the first clamping screw with motor body.
6. a kind of self-adaptation type magnetorheological fluid torsional vibration damper according to claim 5, which is characterized in that described first
The width of the second wing plate of width G T.GT.GT (13) of wing plate (12).
7. a kind of self-adaptation type magnetorheological fluid torsional vibration damper according to any one of claims 1 to 6, which is characterized in that
Multipair case nut hole (6) is offered by symmetrical centre of the center of circle of shock absorber casing (2) on the shock absorber casing (2),
The second clamping screw is equipped in the case nut hole (6), the shock absorber casing (2) is solid by the second clamping screw and crankshaft
Fixed connection.
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 CN106870621A (en) | 2017-06-20 |
| CN106870621B true CN106870621B (en) | 2019-01-18 |
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| 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 |
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| Country | Link |
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| CN (1) | CN106870621B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630596B (en) * | 2018-12-26 | 2020-09-11 | 嘉兴学院 | Rotary type damping-adjustable silicone oil-magnetorheological torsional vibration damper |
| 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 |
| 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5829319A (en) * | 1996-10-04 | 1998-11-03 | Vibratech, Inc. | Magneto-rheological torsional vibration damper |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7823708B2 (en) * | 2005-11-02 | 2010-11-02 | Ford Global Technologies, Llc | Magnetorheological damping device for reduction or elimination of vibration in steering systems |
-
2017
- 2017-03-15 CN CN201710152906.9A patent/CN106870621B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5829319A (en) * | 1996-10-04 | 1998-11-03 | Vibratech, Inc. | Magneto-rheological torsional vibration damper |
| 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 |
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| CN106870621A (en) | 2017-06-20 |
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Granted publication date: 20190118 |