CN103697105A - Current variable torsional vibration damper - Google Patents
Current variable torsional vibration damper Download PDFInfo
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- CN103697105A CN103697105A CN201410013002.4A CN201410013002A CN103697105A CN 103697105 A CN103697105 A CN 103697105A CN 201410013002 A CN201410013002 A CN 201410013002A CN 103697105 A CN103697105 A CN 103697105A
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- vibration damper
- shock absorber
- damping
- inertia
- absorber casing
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Abstract
The invention discloses a current variable torsional vibration damper. The current variable torsional vibration damper is structurally as follows: an antifriction lining inside a vibration damper housing is equipped with an inertia round disc; the upper top and the lower bottom of the round disc are provided with conducting coils; electro-rheological fluid is injected into a circular seam gap between the vibration damper housing and the inertia round disc. The vibration damper housing, the antifriction lining and the inertia round disc are all annular. The contact part of the vibration damper housing and the antifriction lining, the contact part of the antifriction lining and the inertia round disc are insulated, and a current lead is led out from a central shaft of the vibration damper housing by passing through conducting tubes of the antifriction lining and the vibration damper housing. The vibration damper achieves the purpose of vibration damping based on the damping controllable feature of the electro-rheological fluid. The damping force of the electro-rheological fluid is changed by changing the intensity of induced current, so that the current variable torsional vibration damper can achieve a good vibration damping effect when a crankshaft is resonant; moreover, through the adjustment of damping, the current variable torsional vibration damper has a vibration damping effect better than that of a silicone oil vibration damper in a non-resonant frequency range.
Description
Technical field
Engine vibration-damping technology of the present invention, is specifically related to a kind of device that the energy of torsional vibration is cut down.
Background technique
As everyone knows, motor inevitably produces torsional vibration in work meeting in service, and this vibration makes machinery equipment Efficiency Decreasing, even causes the fatigue ruption of bent axle or transmission shaft, and especially in the motor of high speed, high pressure, situation is even more serious.Though the shafting torsional oscillation earthquake intensity sometimes causing because of Long-term Vibration does not reach the degree of crankshaft breakdown, the torsional deflection of bent axle will cause main axle bush to peel off scaling loss, and timing gear or other driven accessary destroy.In addition, the torsional deflection of bent axle also can make engine noise increase.Therefore, subduing torsional vibration is problem anxious to be resolved during engine design is manufactured.Subduing the effective measures of torsional vibration is on bent axle, to install torshional vibration damper additional.
Traditional silicone oil torshional vibration damper is mainly to design according to bent axle natural frequency in order to subdue the amplitude in bent axle when resonance, the damping characteristic of its vibration damper is nonadjustable, and when motor moves under other frequencies beyond resonant frequency, fixedly the vibration damper of damping characteristic does not reach best effectiveness in vibration suppression.Therefore, in order to make bent axle also can reach better effectiveness in vibration suppression under other frequencies.With regard to needs, consider torshional vibration damper to carry out novelty design.
Summary of the invention
The object of the invention is, a kind of current changing type torshional vibration damper is provided, the damping characteristic of its vibration damper can be changed, make bent axle also can realize good effectiveness in vibration suppression beyond resonant frequency.
For realizing the technological scheme that object of the present invention adopts, be: on the antifriction bush in shock absorber casing, inertia disk is housed, on inertia disk, He Xia bottom in top is provided with conductive coil, in the circumferential weld gap between shock absorber casing and inertia disk, is marked with electrorheological fluid.
Working principle of the present invention is under the effect of external electric field, in electrorheological fluid, the dielectric particles of random distribution is in the induced action of electric field, thereby by liquid state, progressed into solid-stately, the flow characteristic of electrorheological fluid is changed, thereby reach the object that changes electrorheological fluid damping force.Annular broken around inertia disk conductive coil in figure represents the electromagnetic force field under electric field action, by this part electric field action, the electric field of vibration damper inside is changed and produces the variation in damping.
Feature of the present invention and beneficial effect be, for traditional silicone oil torshional vibration damper, its damping characteristic is nonadjustable, and its damping constant is just as the optimal damping constant of subduing resonance amplitude.The present invention changes electrorheological fluid damping force by changing faradic size, make it not only when bent axle resonates, can reach good effectiveness in vibration suppression, and by adjusting damping, can also can reach than the better effectiveness in vibration suppression of silicon oil damper in off-resonance frequency range.
Accompanying drawing explanation
Shown in accompanying drawing be the principle of the invention and structural representation.
Embodiment
Below in conjunction with accompanying drawing and by embodiment, principle of the present invention and structure are further described.Current changing type torshional vibration damper comprises: shock absorber casing, antifriction bush, conductive coil, inertia disk and electrorheological fluid etc.Its structure is: on the antifriction bush 2 in shock absorber casing 1, inertia disk 4 is housed, on inertia disk, He Xia bottom in top is provided with conductive coil 3, in the circumferential weld gap between shock absorber casing and inertia disk, is marked with electrorheological fluid 5.Shock absorber casing, antifriction bush and inertia disk are annular.The part that the part that shock absorber casing contacts with antifriction bush and antifriction bush and inertia disk contact is through insulation processing, and ampere wires, via antifriction bush, shock absorber casing conduit, is drawn from shock absorber casing central shaft.Electrorheological fluid is a kind of complex fluid being mixed by dielectric particles and iknsulating liquid, generally dispersed phase, dispersing agent and additive, consists of, and the electric field controllability of its viscosity has formed the main aspect of electrorheological fluid application.Electrorheological fluid has good insulating property, high pressure resistant, low viscosity, and when there is no external electric field, its outward appearance is the spitting image of engine oil, and has good mobility.
In order to access controlled electric field, compare with traditional silicone oil torshional vibration damper, electrode has been installed as the positive pole that applies electric field on inertia disk surface, shock absorber casing is as negative pole.This vibration damper is that the damping controllable characteristics based on electrorheological fluid reaches vibration damping object.Torshional vibration damper is comprised of the toroidal shell sealing and two primary elements of annular inertia disk, and inertia disk can freely rotate round the lining of smooth abrasion-proof in housing.Between shock absorber casing and inertia disk, there is abrim the electrorheological fluid of variable damp characteristics.Shock absorber casing and inertia disk can pass through mould-forming, and then install copper coil, will in housing, be full of electrorheological fluid.Due to electrode being installed on inertia disk, so drawing of its wire will be done special consideration.Its design proposal is for this reason, electrode is arranged on the inertia disk of vibration damper, and owing to relatively moving between inertia disk and housing, and lining and housing are without relatively moving, so wire can be drawn by antifriction bush.The part that the part that lining contacts with housing for this reason and lining contact with inertia disk (except the part that wire contacts with lining) all will be passed through insulation processing.The wire of being drawn by lining is drawn by central shaft through shock absorber casing conduit road again, and wire is placed in insulating bush, and to guarantee good insulation, shock absorber casing conduit adopts insulating material to seal to guarantee that high pressure oil can be from lead channels internal leakage.
During use, by shock absorber casing and crankshaft end close-coupled, allow it with bent axle, produce torsional vibration.In the process of vibration, because disk has inertia, its motion lags behind than the moving periodicity of housing all the time, so between disk and housing, just exists relative movement.Now, in gap, the damping of electrorheological fluid will be played the effect of vibration damping to engine crankshaft.
Claims (3)
1. current changing type torshional vibration damper, comprise shock absorber casing, antifriction bush, conductive coil, inertia disk and electrorheological fluid, on antifriction bush (2) in shock absorber casing (1), inertia disk (4) is housed, it is characterized in that: He Xia bottom in top is provided with conductive coil (3) on inertia disk, in the circumferential weld gap between shock absorber casing and inertia disk, be marked with electrorheological fluid (5).
2. according to current changing type torshional vibration damper claimed in claim 1, it is characterized in that: described shock absorber casing, antifriction bush and inertia disk are annular.
3. according to current changing type torshional vibration damper claimed in claim 1, it is characterized in that: the part that the part that described shock absorber casing contacts with antifriction bush and antifriction bush and inertia disk contact is through insulation processing, ampere wires, via antifriction bush, shock absorber casing conduit, is drawn from shock absorber casing central shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410013002.4A CN103697105A (en) | 2014-01-13 | 2014-01-13 | Current variable torsional vibration damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410013002.4A CN103697105A (en) | 2014-01-13 | 2014-01-13 | Current variable torsional vibration damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103697105A true CN103697105A (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410013002.4A Pending CN103697105A (en) | 2014-01-13 | 2014-01-13 | Current variable torsional vibration damper |
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| CN (1) | CN103697105A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969086A (en) * | 2017-03-27 | 2017-07-21 | 宁波大学 | A kind of magnetorheological torsional vibration damper for engine |
| CN111288119A (en) * | 2020-02-14 | 2020-06-16 | 同济大学 | Three-dimensional vibration isolation device combining inertial container and friction pendulum support |
| CN115076284A (en) * | 2022-07-22 | 2022-09-20 | 杭州电子科技大学 | Self-adaptive vibration damper based on magnetorheological fluid |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1563738A (en) * | 2004-04-20 | 2005-01-12 | 南京航空航天大学 | Multistage magnetic rheopectic damper |
| CN201166084Y (en) * | 2008-03-18 | 2008-12-17 | 中国矿业大学 | Current liquid changing rotary damper |
| CN102168736A (en) * | 2011-05-05 | 2011-08-31 | 天津大学 | Magnetorheological torsional vibration damper for engine |
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2014
- 2014-01-13 CN CN201410013002.4A patent/CN103697105A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563738A (en) * | 2004-04-20 | 2005-01-12 | 南京航空航天大学 | Multistage magnetic rheopectic damper |
| CN201166084Y (en) * | 2008-03-18 | 2008-12-17 | 中国矿业大学 | Current liquid changing rotary damper |
| CN102168736A (en) * | 2011-05-05 | 2011-08-31 | 天津大学 | Magnetorheological torsional vibration damper for engine |
Non-Patent Citations (3)
| Title |
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| 周鲁卫: "电流变液、磁流变悬浮液研究与应用", 《国际学术动态》 * |
| 祝世兴，梁钟，李乔治: "电流变流体和磁流变流体在工程上的应用", 《稀有金属》 * |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969086A (en) * | 2017-03-27 | 2017-07-21 | 宁波大学 | A kind of magnetorheological torsional vibration damper for engine |
| CN106969086B (en) * | 2017-03-27 | 2018-12-04 | 宁波大学 | A kind of magnetorheological torsional vibration damper for engine |
| CN111288119A (en) * | 2020-02-14 | 2020-06-16 | 同济大学 | Three-dimensional vibration isolation device combining inertial container and friction pendulum support |
| CN111288119B (en) * | 2020-02-14 | 2021-09-14 | 同济大学 | Three-dimensional vibration isolation device combining inertial container and friction pendulum support |
| CN115076284A (en) * | 2022-07-22 | 2022-09-20 | 杭州电子科技大学 | Self-adaptive vibration damper based on magnetorheological fluid |
| CN115076284B (en) * | 2022-07-22 | 2023-07-18 | 杭州电子科技大学 | Self-adaptive vibration damper based on magnetorheological fluid |
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Application publication date: 20140402 |