CN103122964B - Magnetic liquid damping vibration reduction device - Google Patents
Magnetic liquid damping vibration reduction device Download PDFInfo
- Publication number
- CN103122964B CN103122964B CN201310049998.XA CN201310049998A CN103122964B CN 103122964 B CN103122964 B CN 103122964B CN 201310049998 A CN201310049998 A CN 201310049998A CN 103122964 B CN103122964 B CN 103122964B
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- Prior art keywords
- permanent magnet
- magnetic liquid
- housing
- vibration reduction
- angle
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- Fluid-Damping Devices (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention provides a magnetic liquid damping vibration reduction device, belongs to the field of mechanical engineering vibration, is applied to vibration reduction of long objects, and solves the problem that the inner wall of the shell of the prior magnetic liquid damping absorber crashes into with a permanent magnet, and therefore service life of the permanent magnet is reduced and vibration reduction performance is affected. The outer end of a nest spring (5) of the magnetic liquid damping vibration reduction device is welded on the inner wall of a shell (4) to form the inner wall of the vibration reduction device; a cylindrical permanent magnet (8) adhered with magnetic liquid is placed in the shell; the permanent magnet (8) and the nest spring (5) are axially magnetized, and the axial line is placed perpendicular to a level surface; a V-shaped included angle of a wedge angle gasket (6) is 60-170 degrees; the permanent magnet (8) and the nest spring (5) are axially magnetized, and the axial line is placed perpendicular to the level surface; and gaps between the nest spring (5) and the permanent magnet (8) are smaller than or equal to amplitude required by vibration reduction of the absorber. The magnetic liquid damping vibration reduction device is simple, reliable, obvious in vibration reduction effect and long in service life.
Description
Technical field
The invention belongs to mechanical engineering vibration field.
Background technique
The advantages such as magnetic liquid damping vibration attenuation technology has inertial force susceptibility high due to it, and power consumption is large, and volume is little, and structure is simple, and the life-span is long gradually use by manned space flight field.Existing magnetic fluid damper typical structure is if publication number is for as described in the patent application of CN 102032304A, and this vibration damper comprises: O type rubber seal, housing, magnetic liquid, permanent magnet, end cap.Permanent magnet is placed in housing, and end cap on the permanent magnet, is fixedly connected with housing by bolt and nut by magnetic liquid absorption, therebetween by O type rubber seal rings for seal.When making described device be greater than the gap between housing and permanent magnet at amplitude for a certain reason, can collide between inner walls and permanent magnet, vibration damper being declined working life, affects damping property.
Summary of the invention
The technical issues that need to address of the present invention are, existing magnetic liquid damping vibration attenuating device is when extraneous amplitude is greater than the gap between housing and permanent magnet, can collide between inner walls and permanent magnet, vibration damper is caused to decline working life, affect damping property, therefore, a kind of magnetic liquid damping vibration attenuating device is provided.
The technical solution adopted for the present invention to solve the technical problems is:
Magnetic liquid damping vibration attenuating device, this vibration damping equipment comprises: O type rubber seal, housing, nest spring, angle of wedge pad, magnetic liquid, cylinder permanent magnet, end cap.O type rubber seal embeds in the groove on housing opening end face, on magnetic liquid absorption permanent magnet, by screw bolt and nut by end cap together with housing compact siro spinning technology.
The outer end of nest spring is welded on the inwall of housing, forms the inwall of vibration damping equipment.
Angle of wedge pad is placed on the bottom in housing, and the permanent magnet adsorbing magnetic liquid upwards, is placed in housing by its V-arrangement angle.
Described cylinder permanent magnet axial charging, axes normal is placed in horizontal plane.
The V-arrangement angle of described angle of wedge pad is 60 ~ 170 degree.
Gap between described nest spring and cylinder permanent magnet is less than or equal to the amplitude that vibration damper needs vibration damping.
The present invention compares had beneficial effect with prior art:
Be welded on the nest spring in inner walls, effectively prevent the shock of cylinder permanent magnet and vibration damper inwall, improve damping property and the working life of vibration damping equipment.Angle of wedge pad is arranged on the bottom in housing, adds effectiveness in vibration suppression.
Accompanying drawing explanation
Fig. 1 is magnetic liquid damping vibration attenuating device structural drawing.
Fig. 2 is magnetic liquid damping vibration attenuating device internal structure graphics.
Embodiment
The invention will be further described by reference to the accompanying drawings:
Magnetic liquid damping vibration attenuating device, as Fig. 1,2, this vibration damping equipment comprises: O type rubber seal 3, housing 4, nest spring 5, angle of wedge pad 6, magnetic liquid 7, cylinder permanent magnet 8, end cap 9.O type rubber seal 3 embeds in the groove on housing 4 open end, on magnetic liquid 7 absorbent cylindrical permanent magnet 8, by screw bolt and nut by end cap 9 together with housing 4 compact siro spinning technology.
The outer end of nest spring 5 is welded on the inwall of housing 4, forms the inwall of vibration damping equipment.
Angle of wedge pad 6 is placed on the bottom in housing 4, and the cylinder permanent magnet 8 adsorbing magnetic liquid 7 upwards, is placed in housing 4 by its V-arrangement angle.
Described cylinder permanent magnet 8 axial charging, axes normal is placed in horizontal plane.
The V-arrangement angle of described angle of wedge pad 6 is 60 ~ 170 degree.This angle is got its end value or is got the arbitrary value in the middle of it.
Gap between described nest spring 5 and cylinder permanent magnet 8 is less than or equal to the amplitude that vibration damper needs vibration damping.
When being subject to extraneous vibration, the cylinder permanent magnet 8 adsorbing magnetic liquid 7 moves in housing 4, forms effective friction energy-dissipating, thus reaches vibration damping object.
When colliding between cylinder permanent magnet 8 and nest spring 5, due to the buffering absorbing effect of nest spring 5, thus avoid the collision between rigid body, improve working life and the performance of vibration damper.
The material selection rubidium iron boron of cylinder permanent magnet 8.
Described housing 4, angle of wedge pad 6, end cap 9, nest spring 5, screw bolt and nut, by nonmagnetic substance manufacture.
Magnetic liquid 7 generally selects ester group, machine oil based magnetic liquid, selects Polydimethylsiloxane--based Ferrofluids when space environment.
Claims (1)
1. magnetic liquid damping vibration attenuating device, it is applied to space environment, and this vibration damping equipment comprises: housing (4), O type rubber seal (3), end cap (9), cylinder permanent magnet (8), magnetic liquid (7); O type rubber seal (3) embeds in the groove on housing (4) open end, on magnetic liquid absorbent cylindrical permanent magnet, by screw bolt and nut by end cap (9) and housing (4) compact siro spinning technology together;
It is characterized in that:
The outer end of nest spring (5) is welded on the inwall of housing (4), forms the inwall of vibration damping equipment;
Angle of wedge pad (6) is placed on the bottom in housing (4), and upwards, the cylinder permanent magnet (8) adsorbing magnetic liquid (7) is placed in housing (4) to its V-arrangement angle;
Described permanent magnet (8) axial charging, axes normal is placed in horizontal plane;
The V-arrangement angle of described angle of wedge pad (6) is 60 ~ 170 degree;
Gap between described nest spring (5) and cylinder permanent magnet (8) equals the amplitude that vibration damper needs vibration damping;
Described housing (4), angle of wedge pad (6), end cap (9), nest spring (5), screw bolt and nut, by nonmagnetic substance manufacture;
Magnetic liquid (7) selects Polydimethylsiloxane--based Ferrofluids when space environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310049998.XA CN103122964B (en) | 2013-02-08 | 2013-02-08 | Magnetic liquid damping vibration reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310049998.XA CN103122964B (en) | 2013-02-08 | 2013-02-08 | Magnetic liquid damping vibration reduction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103122964A CN103122964A (en) | 2013-05-29 |
| CN103122964B true CN103122964B (en) | 2015-05-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310049998.XA Expired - Fee Related CN103122964B (en) | 2013-02-08 | 2013-02-08 | Magnetic liquid damping vibration reduction device |
Country Status (1)
| Country | Link |
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| CN (1) | CN103122964B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196927B (en) * | 2020-10-23 | 2021-08-17 | 清华大学 | Magnetic liquid damping shock absorber based on first-order and second-order buoyancy principle |
| CN112112921B (en) * | 2020-10-29 | 2021-06-11 | 清华大学 | Magnetic liquid damping vibration absorber |
| CN112211940B (en) * | 2020-10-30 | 2021-11-23 | 清华大学 | Magnetic liquid vibration damper |
| CN112392884B (en) * | 2020-11-11 | 2021-06-15 | 清华大学 | Magnetic liquid shock absorber based on second-order buoyancy principle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2894004A1 (en) * | 2005-11-28 | 2007-06-01 | Belarussian Nat Technical Univ | Inertial damper for e.g. satellite antenna, has case with cavity comprising complex including magnetic field source introduced in magnetic fluid, and elastic unit permitting to stabilize complex in defined position of cavity |
| CN102032304A (en) * | 2010-12-29 | 2011-04-27 | 北京交通大学 | Magnetic fluid damping device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3570204B2 (en) * | 1998-02-12 | 2004-09-29 | Ｎｏｋ株式会社 | Inertia damper |
| US7140478B2 (en) * | 2004-08-13 | 2006-11-28 | General Motors Corporation | Reversibly expandable energy absorbing assembly utilizing actively controlled and engineered materials for impact management and methods for operating the same |
| JP2007315416A (en) * | 2006-05-23 | 2007-12-06 | Nok Corp | Viscous rubber damper |
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2013
- 2013-02-08 CN CN201310049998.XA patent/CN103122964B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2894004A1 (en) * | 2005-11-28 | 2007-06-01 | Belarussian Nat Technical Univ | Inertial damper for e.g. satellite antenna, has case with cavity comprising complex including magnetic field source introduced in magnetic fluid, and elastic unit permitting to stabilize complex in defined position of cavity |
| CN102032304A (en) * | 2010-12-29 | 2011-04-27 | 北京交通大学 | Magnetic fluid damping device |
Non-Patent Citations (1)
| Title |
|---|
| 磁性液体阻尼减振器的实验研究;王庆雷等;《北京交通大学学报》;20120228;第36卷(第01期);第135-139页 * |
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| CN103122964A (en) | 2013-05-29 |
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Granted publication date: 20150506 Termination date: 20200208 |