CN104895986A - Shear mode magnetorheological elastomer frequency conversion vibration isolator - Google Patents
Shear mode magnetorheological elastomer frequency conversion vibration isolator Download PDFInfo
- Publication number
- CN104895986A CN104895986A CN201510044266.0A CN201510044266A CN104895986A CN 104895986 A CN104895986 A CN 104895986A CN 201510044266 A CN201510044266 A CN 201510044266A CN 104895986 A CN104895986 A CN 104895986A
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- magnet
- cover plate
- elastic body
- rheology elastic
- magnetic rheology
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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
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a shear mode magnetorheological elastomer frequency conversion vibration isolator comprising a bolt, magnetorheological elastomer, a shell, an upper cover plate, a lower cover plate, a sealing ring, a magnet, a magnet outer cover, a magnet cover plate and a spring. The bolt is fixed in the middle of the magnetorheological elastomer via a connecting nut; the magnetorheological elastomer and the shell form a magnetorheological elastomer assembly; the two ends of the shell are matched with the upper cover plate; the upper cover plate, the lower cover plate and the magnetorheological elastomer assembly form a closed space; the sealing ring, the magnet outer cover and the magnet cover plate divide the closed space into an upper cavity and a lower cavity; the magnet is installed between the magnet outer cover and the magnet cover plate; the magnet outer cover and the magnetorheological elastomer assembly are connected through the spring. Through the movement of the magnetorheological elastomer, the positions of the magnet and the magnetorheological elastomer change relatively, so that the frequency conversion and the vibration isolation under multi-frequency working state are realized.
Description
Technical field
The present invention relates to vibration isolator field, particularly a kind of shear mode magnetic rheology elastic body frequency conversion vibration isolator.
Background technique
Concussion when vibration damper rebounds after being mainly used to suppress spring shock-absorbing and the impact from road surface.Through uneven road surface, although shock-absorbing spring can filter the vibrations on road surface, spring self also has to-and-fro motion, and vibration damper is just used to suppress this spring to jump.Vibration damper is too soft, and vehicle body will vertical bounce, and vibration damper will bring too large resistance too firmly, hinders spring normally to work.
Magnetic rheology elastic body is incorporated in high molecular polymer by the ferromagnetic particle of micro-meter scale, solidifies under magnetic field environment, thus the particle in matrix has chain or column structure.The Young's modulus of this material can change with applied field strengths, and compared with common magnetic flow liquid, magnetic rheology elastic body not only has controllability, reversibility, the rapid contour technical characteristics of response, also has the advantage of the uniquenesses such as good stability; Pneumatic spring vibration damper vibration isolation efficiency is high, the little easy installation of volume.For existing MR elastomer vibration isolator, if increase the advantage of pneumatic spring vibration damper, function of shock insulation can better be played.
Summary of the invention
In order to improve the isolating affection of existing MR elastomer vibration isolator, a kind of shear mode magnetic rheology elastic body frequency conversion vibration isolator is proposed.
Object of the present invention can be achieved through the following technical solutions:
Shear mode magnetic rheology elastic body frequency conversion vibration isolator, comprises bolt, magnetic rheology elastic body, housing, upper cover plate, lower cover plate, seal ring, magnet, magnet outer cover, magnet cover plate, spring, wherein:
Described bolt is fixed in the middle of magnetic rheology elastic body by attaching nut, and power assembly is installed in described bolt upper end;
Described magnetic rheology elastic body outer ring is fixed on housing, and form magnetic rheology elastic body assembly, housing two ends are stepped, and housing two ends coordinate with upper cover plate;
Described upper cover plate, lower cover plate and magnetic rheology elastic body are always shaped as enclosed space, and enclosed space is divided into upper and lower chamber by described seal ring, magnet outer cover and magnet cover plate;
Described seal ring outer ring is fixed between upper cover plate and lower cover plate, and inner ring is fixed between magnet outer cover and magnet cover plate;
Described magnet is arranged on magnetic rheology elastic body lower end, and described magnet is arranged between magnet outer cover and magnet cover plate;
Be provided with labyrinth channel in described magnet cover plate, labyrinth channel end is provided with air outlet hole, and air outlet hole is communicated with enclosed space cavity of resorption, and described magnet outer cover has through hole, and through hole is connected with labyrinth channel;
Described magnet outer cover is connected by spring with between magnetic rheology elastic body assembly.
Further, due to the needs of magnetic Circuit Design, also comprise magnetic conduction iron block, described magnetic conduction iron block is arranged between magnet outer cover and magnet cover plate, and described magnetic conduction iron block can the position of fixed magnet.
Further, between described housing and upper cover plate, horizontal integration place leaves gap.
Preferably, described upper cover plate, lower cover plate, magnet outer cover, magnet cover plate and attaching nut's material are aluminum alloy.
Preferably, described bolt material is brass.
Described magnetic rheology elastic body is bonded on housing by sulfuration.
Preferably, described magnetic rheology elastic body, housing, upper cover plate, lower cover plate, seal ring, magnet, magnet outer cover, magnet cover plate are solid of rotation.
Beneficial effect of the present invention:
1, when power assembly low frequency significantly shakes, magnetic rheology elastic body significantly shakes, magnetic flux now through magnetic rheology elastic body increases, magnetic rheology elastic body obtains large rigidity, air simultaneously in upper and lower cavity flows back and forth through the passage that dams, vibration damper obtains large damping, and rapid decay low frequency significantly shakes.
2, when power assembly high frequency slightly shakes, magnetic rheology elastic body amplitude is less, and the magnetic flux now through magnetic rheology elastic body reduces, magnetic rheology elastic body obtains little rigidity, the air simultaneously flowed through through the passage that dams in upper and lower cavity is less, and vibration damper obtains little damping, is beneficial to attenuate high frequency vibrations.
3, the present invention is moved by magnetic rheology elastic body, and magnet is relative with magnetic rheology elastic body position to be changed, thus realizes the vibration isolation of multi-frequency working state down coversion.
Accompanying drawing explanation
Fig. 1 is shear mode magnetic rheology elastic body frequency conversion vibration isolator structure schematic diagram of the present invention.
Fig. 2 is magnet cap plate structure schematic diagram of the present invention.
Fig. 3 is magnet cover plate sectional view of the present invention.
In accompanying drawing: 1, bolt, 2, magnetic rheology elastic body, 3, upper cover plate, 4, seal ring, 5, magnet outer cover, 6, magnetic conduction iron block, 7, magnet, 8, magnet cover plate, 9, lower cover plate, 10, spring, 11, housing.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As shown in Figure 1, shear mode magnetic rheology elastic body frequency conversion vibration isolator, comprise bolt 1, magnetic rheology elastic body 2, housing 11, upper cover plate 3, lower cover plate 9, seal ring 4, magnetic conduction iron block 6, magnet 7, magnet outer cover 5, magnet cover plate 8, spring 10, described bolt 1 is fixed in the middle of magnetic rheology elastic body 2 by the attaching nut that aluminum alloy is made, bolt material is brass, and power assembly is installed in described bolt 1 upper end.
The sulfuration of described magnetic rheology elastic body 2 is bonded on housing 11, form magnetic rheology elastic body assembly, housing 11 two ends are stepped, housing 11 two ends coordinate with upper cover plate 3, between described housing 11 and upper cover plate 3, horizontal integration place leaves the gap of distortion, the magnetic rheology elastic body assembly that magnetic rheology elastic body 2 and housing 11 combine, between upper cover plate 3 and bolt 1, is in shearing condition.
Described upper cover plate 3, lower cover plate 9 and magnetic rheology elastic body are always shaped as enclosed space, enclosed space is divided into epicoele and cavity of resorption by described seal ring 4, magnet outer cover 5 and magnet cover plate 8, described seal ring 4 outer ring is fixed between upper cover plate 3 and lower cover plate 9, and inner ring is fixed between magnet outer cover 5 and magnet cover plate 8.
Described magnet 7 is arranged on magnetic rheology elastic body 2 lower end, described magnet 7 is arranged between magnet outer cover 5 and magnet cover plate 8, for optimizing magnetic circuit and fixed magnet 7, install magnetic conduction iron block 6 in magnet upper end, magnetic conduction iron block 6 is fixed between magnet outer cover 5 and magnet cover plate 8.
As shown in Figures 2 and 3, labyrinth channel is provided with in described magnet cover plate 8, labyrinth channel end is provided with air outlet hole, air outlet hole is communicated with enclosed space cavity of resorption, described magnet outer cover 5 has through hole, through hole is connected with labyrinth channel, and described magnet outer cover 5 is connected by spring 10 with between magnetic rheology elastic body assembly.
Upper cover plate 3, lower cover plate 9, magnet outer cover 5, magnet cover plate 8 and attaching nut's material are aluminum alloy.
Magnetic rheology elastic body 2, housing 11, upper cover plate 3, lower cover plate 9, seal ring 4, magnet 7, magnet outer cover 5, magnet cover plate 8 are solid of rotation.
Seal ring 4 and magnetic rheology elastic body 2 are composite material.
The present embodiment is equivalent to connecting of a magnetic rheology elastic body vibration damper and two chamber pneumatic spring vibration dampers, epicoele and cavity of resorption air pressure is in the state of the equilibrium equal, when magnetic rheology elastic body 2 moves downward, upper chamber air is compressed, and enters cavity of resorption by the through hole of magnet outer cover 5 and the air outlet hole of magnet cover plate 8 labyrinth channel; When magnetic rheology elastic body 2 moves upward, now the pressure of cavity of resorption is greater than epicoele, and magnet 7 moves upward, and changes the power of its controlling magnetic field along with the change of amplitude-frequency, thus reaches the rigidity controlling magnetic rheology elastic body.
The present invention is moved by magnetic rheology elastic body, and magnet is relative with magnetic rheology elastic body position to be changed, thus realizes the vibration isolation of multi-frequency working state down coversion.
Above content is only to structure example of the present invention and explanation; affiliated those skilled in the art make various amendment to described specific embodiment or supplement or adopt similar mode to substitute; only otherwise depart from the structure of invention or surmount this scope as defined in the claims, protection scope of the present invention all should be belonged to.
Claims (7)
1. shear mode magnetic rheology elastic body frequency conversion vibration isolator, is characterized in that, comprises bolt, magnetic rheology elastic body, housing, upper cover plate, lower cover plate, seal ring, magnet, magnet outer cover, magnet cover plate, spring, wherein:
Described bolt is fixed in the middle of magnetic rheology elastic body by attaching nut, and power assembly is installed in described bolt upper end;
Described magnetic rheology elastic body outer ring is fixed on housing, and form magnetic rheology elastic body assembly, housing two ends are stepped, and housing two ends coordinate with upper cover plate;
Described upper cover plate, lower cover plate and magnetic rheology elastic body are always shaped as enclosed space, and enclosed space is divided into upper and lower chamber by described seal ring, magnet outer cover and magnet cover plate;
Described seal ring outer ring is fixed between upper cover plate and lower cover plate, and inner ring is fixed between magnet outer cover and magnet cover plate;
Described magnet is arranged on magnetic rheology elastic body lower end, and described magnet is arranged between magnet outer cover and magnet cover plate;
Be provided with labyrinth channel in described magnet cover plate, labyrinth channel end is provided with air outlet hole, and air outlet hole is communicated with enclosed space cavity of resorption, and described magnet outer cover has through hole, and through hole is connected with labyrinth channel;
Described magnet outer cover is connected by spring with between magnetic rheology elastic body assembly.
2. shear mode magnetic rheology elastic body frequency conversion vibration isolator according to claim 1, it is characterized in that, due to the needs of magnetic Circuit Design, also comprise magnetic conduction iron block, described magnetic conduction iron block is arranged between magnet outer cover and magnet cover plate, and described magnetic conduction iron block can the position of fixed magnet.
3. shear mode magnetic rheology elastic body frequency conversion vibration isolator according to claim 1, it is characterized in that, between described housing and upper cover plate, horizontal integration place leaves gap.
4. shear mode magnetic rheology elastic body frequency conversion vibration isolator according to claim 1, it is characterized in that, described upper cover plate, lower cover plate, magnet outer cover, magnet cover plate and attaching nut's material are aluminum alloy.
5. shear mode magnetic rheology elastic body frequency conversion vibration isolator according to claim 1, it is characterized in that, described bolt material is brass.
6. shear mode magnetic rheology elastic body frequency conversion vibration isolator according to claim 1, it is characterized in that, described magnetic rheology elastic body is bonded on housing by sulfuration.
7. shear mode magnetic rheology elastic body frequency conversion vibration isolator according to claim 1, it is characterized in that, described magnetic rheology elastic body, housing, upper cover plate, lower cover plate, seal ring, magnet, magnet outer cover, magnet cover plate are solid of rotation.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105626758A (en) * | 2016-03-22 | 2016-06-01 | 铱格斯曼航空科技集团有限公司 | Magneto-rheological damper used for installation and debugging of helicopter high-definition camera |
CN114250880A (en) * | 2021-12-31 | 2022-03-29 | 同济大学 | Recycled concrete shearing vibration isolation device |
Citations (9)
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JPS62180129A (en) * | 1986-01-31 | 1987-08-07 | Toyota Motor Corp | Magnetic fluid filled vibration isolator |
DE19711689A1 (en) * | 1997-03-20 | 1998-09-24 | Bayerische Motoren Werke Ag | Set bearing for motor vehicle |
GB2357569A (en) * | 1999-12-23 | 2001-06-27 | Draftex Ind Ltd | Pressure activated hydraulic cylinder with magnetic check valves |
CN201902492U (en) * | 2010-12-21 | 2011-07-20 | 南车二七车辆有限公司 | Friction magnetorheological elastomer buffer |
CN203413020U (en) * | 2013-07-22 | 2014-01-29 | 长安大学 | Engine vibration damper based on magneto-rheological fluid |
CN103671687A (en) * | 2013-12-20 | 2014-03-26 | 谭苹 | Magneto-rheological elastomer double-annular-membrane damper |
CN203614654U (en) * | 2013-10-23 | 2014-05-28 | 安徽微威胶件集团有限公司 | Closed loop magnetizer magneto-rheological elastic body vibration isolator |
CN104034452A (en) * | 2014-07-01 | 2014-09-10 | 重庆材料研究院有限公司 | Shear strain type pressure sensor |
CN204533324U (en) * | 2015-01-28 | 2015-08-05 | 安徽微威胶件集团有限公司 | A kind of shear mode magnetic rheology elastic body frequency conversion vibration isolator |
-
2015
- 2015-01-28 CN CN201510044266.0A patent/CN104895986B/en active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62180129A (en) * | 1986-01-31 | 1987-08-07 | Toyota Motor Corp | Magnetic fluid filled vibration isolator |
DE19711689A1 (en) * | 1997-03-20 | 1998-09-24 | Bayerische Motoren Werke Ag | Set bearing for motor vehicle |
GB2357569A (en) * | 1999-12-23 | 2001-06-27 | Draftex Ind Ltd | Pressure activated hydraulic cylinder with magnetic check valves |
CN201902492U (en) * | 2010-12-21 | 2011-07-20 | 南车二七车辆有限公司 | Friction magnetorheological elastomer buffer |
CN203413020U (en) * | 2013-07-22 | 2014-01-29 | 长安大学 | Engine vibration damper based on magneto-rheological fluid |
CN203614654U (en) * | 2013-10-23 | 2014-05-28 | 安徽微威胶件集团有限公司 | Closed loop magnetizer magneto-rheological elastic body vibration isolator |
CN103671687A (en) * | 2013-12-20 | 2014-03-26 | 谭苹 | Magneto-rheological elastomer double-annular-membrane damper |
CN104034452A (en) * | 2014-07-01 | 2014-09-10 | 重庆材料研究院有限公司 | Shear strain type pressure sensor |
CN204533324U (en) * | 2015-01-28 | 2015-08-05 | 安徽微威胶件集团有限公司 | A kind of shear mode magnetic rheology elastic body frequency conversion vibration isolator |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105626758A (en) * | 2016-03-22 | 2016-06-01 | 铱格斯曼航空科技集团有限公司 | Magneto-rheological damper used for installation and debugging of helicopter high-definition camera |
CN114250880A (en) * | 2021-12-31 | 2022-03-29 | 同济大学 | Recycled concrete shearing vibration isolation device |
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