CN103711834A - Self-adaptive electromagnetic induction electrorheological torsional vibration damper - Google Patents
Self-adaptive electromagnetic induction electrorheological torsional vibration damper Download PDFInfo
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- CN103711834A CN103711834A CN201410013001.XA CN201410013001A CN103711834A CN 103711834 A CN103711834 A CN 103711834A CN 201410013001 A CN201410013001 A CN 201410013001A CN 103711834 A CN103711834 A CN 103711834A
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Abstract
The invention discloses a self-adaptive electromagnetic induction electrorheological torsional vibration damper. According to the self-adaptive electromagnetic induction electrorheological torsional vibration damper, an anti-wearing lining is arranged on a shell, an installation notch is formed in the anti-wearing lining to allow a magnet inner core disc to be embedded in, the gap between the shell and the magnet inner core disc is filled with damping fluid, and a through magnetic induction coil is wound around the shell; a plurality of conducting strips are arranged on the surface of the position, in contact friction with the bottom end of the magnet inner core disc, of the anti-wearing lining and at the inner lower end of the shell, the conducting strips are connected in series and then connected to an A/D converter through wires, the current output ends of the magnetic induction coil are connected to a controller, alternating currents are converted into direct currents by the A/D converter and then are supplied to the controller to provide control currents, and both the anti-wearing lining and the magnet inner core disc are annular. The damping characteristic of the self-adaptive electromagnetic induction electrorheological torsional vibration damper can be adjusted automatically according to the amplitude of torsional vibration of a crankshaft, magnetic induction and currents can be changed through the vibration amplitude to further change the damping force of electrorheological fluid, and then the damping effect of the crankshaft can be good under different rotating speeds.
Description
Technical field
Engine vibration-damping technology of the present invention, is specifically related to a kind of electric current with adaptive electro magnetic induction way and becomes Torsinoal absorber.
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.
Traditional silicone oil torsional vibration damper, mainly that the amplitude when cutting down bent axle resonance designs according to bent axle natural frequency, 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, this technology has become the improved break-through point of damping technology.The energy that crankshaft torsional vibrations produce simultaneously sheds heat by the silicone oil of inertia disk outside, and its vibrational energy also can not get effectively reclaiming and utilizing.If can reach on the basis of effectiveness in vibration suppression, again this energy is reclaimed simultaneously, will become the required of the industry.
Summary of the invention
The object of the invention is, provide a kind of electric current engine crankshaft vibrational energy being reclaimed with adaptive electro magnetic induction way to become Torsinoal absorber.
For realizing the technological scheme that object of the present invention takes, be: housing is equipped with antifriction bush, and antifriction bush is provided with installation gap, embeds magnet inner core disk on breach, in the circumferential weld gap between housing and magnet inner core disk, is marked with vibration damping liquid.The surface of housing is tied with the magnetic induction coil of UNICOM, and at antifriction bush, contact with magnet inner core disk bottom frictional position surface and housing lower end, be provided with some conducting plates.After each conducting plate serial connection, by wire, be connected to A/D converter, the current output terminal of magnetic induction coil is attached to controller.A/D converter is supplied with controller by electric current from interchange becomes direct current.
Self-adaptive electromagnetic induction type current becomes torshional vibration damper, utilize oscillating body electromagnetic induction to produce the characteristic of alternating current, in inner core disk inside, magnet is set, inner core disk outside (housing) arranges inductor coil, and magnet and inductor coil produce relative displacement will produce induction electromotive force in inductor coil.This electromotive force is drawn and after the conversion of alternating direct-current, by induction current, control the damping characteristic that electrorheological fluid changes its inner core disk.Because the rheological properties of electrorheological fluid can be subject to the control of extra electric field, thereby can regulate induction current to control the damping constant of electrorheological fluid by realization, thereby control torsional oscillation and the Oscillation Amplitude of bent axle.With respect to common silicon oil damper, can make bent axle also can realize good effectiveness in vibration suppression under other frequencies except resonant frequency, meanwhile, crankshaft vibration Shaoxing opera is strong, and vibration damping characteristic is stronger, also stronger to shafting vibration inhibitory action.
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.And its damping characteristic of apparatus of the present invention regulates automatically according to crankshaft torsional vibrations amplitude size, by vibration amplitude, change magnetic induction size, magnetic induction size has determined the size of electric current, the size of electric current has determined again the size of electrorheological fluid damping force.Thereby make bent axle be issued to good effectiveness in vibration suppression at every speed.
Accompanying drawing explanation
Shown in accompanying drawing be principle of the present invention and structural representation.What accompanying drawing showed is vibration damper semi-circular structure, and in figure, the chain line of bottom is the center line of this vibration damper.
Embodiment
Below in conjunction with accompanying drawing and by embodiment, principle of the present invention and structure are further described.
Self-adaptive electromagnetic induction type current becomes torshional vibration damper and comprises: housing, antifriction bush, magnetic induction coil, vibration damping liquid, magnet inner core disk, conducting plate and A/D converter etc., its structure is: housing 1 is equipped with antifriction bush 2, antifriction bush is provided with installation gap, on breach, embed magnet inner core disk 5, in circumferential weld gap between housing and magnet inner core disk, be marked with vibration damping liquid 4, the surface of housing is tied with the magnetic induction coil of UNICOM.At antifriction bush, contact with magnet inner core disk bottom frictional position surface and inner housing lower end, be provided with some conducting plates 6.After each conducting plate serial connection, by wire, be connected to A/D converter 7, the current output terminal of magnetic induction coil is attached to controller 8.A/D converter is supplied with controller so that control electric current to be provided by electric current from interchange becomes direct current.Antifriction bush and magnet inner core disk are annular.Conducting plate adopts copper sheet to weld; Vibration damping liquid adopts electrorheological fluid.A/D converter is the device of realizing alterating and direct current conversion.
This vibration damper is comprised of the toroidal shell sealing and annular two primary elements of magnet inner core disk, and magnet inner core disk can freely rotate round the lining of smooth abrasion-proof in housing.During use, by vibration damper frame and crankshaft end close-coupled, allow it with bent axle, produce torsional vibration.In the process of vibration, because magnet inner core disk has inertia, the beat of periodicity hysteresis that its motion is just moved than housing all the time, so between disk and housing, just exist relative movement.On inner housing surface, be wound with magnetic induction coil, when disk moves, magnetic force line cutting magnetic induction coil, makes coil produce alternating current.By A/D rectification circuit, change DC electrical source into, by brush, conduct back the set electrode in magnetic disk surface, negative pole is located at vibration damper shell.
Vibration damper disk and shell relative movement Shaoxing opera are strong, and the alternating current producing is also just larger, thereby it is also just larger to act on the electric current of internal electrical rheology liquid, and the damping function that electrorheological fluid plays is also large with regard to phase strain, thereby has played effective inhibitory action.This inhibitory action works by vibration and the magnetic induction of vibration damper itself, need not extraneously adjust, and just can carry out self adaption adjusting, reaches vibration damping object.
Claims (3)
1. self-adaptive electromagnetic induction type current becomes torshional vibration damper, comprise: housing, antifriction bush, magnetic induction coil 3, vibration damping liquid, magnet inner core disk, conducting plate, A/D converter, it is characterized in that: housing (1) is equipped with antifriction bush (2), antifriction bush is provided with installation gap, on breach, embed magnet inner core disk (5), in circumferential weld gap between housing and magnet inner core disk, be marked with electric current and become vibration damping liquid (4), the surface of inner housing is tied with the magnetic induction coil (3) of UNICOM, frictional position surface and inner housing lower end contact with magnet inner core disk bottom at antifriction bush, be provided with some conducting plates (6), after each conducting plate serial connection, by wire, be connected to A/D converter (7), the current output terminal of magnetic induction coil is attached to controller (8), A/D converter is supplied with controller after A.C. current is converted to direct current.
2. according to self-adaptive electromagnetic induction type current claimed in claim 1, become torshional vibration damper, it is characterized in that: described inner and outer shell, antifriction bush and magnet inner core disk are annular.
3. according to self-adaptive electromagnetic induction type current claimed in claim 1, become torshional vibration damper, it is characterized in that: described conducting plate is copper sheet; Described vibration damping liquid is electrorheological fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410013001.XA CN103711834B (en) | 2014-01-13 | 2014-01-13 | Self-adaptive electromagnetic induction type current becomes torshional vibration damper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410013001.XA CN103711834B (en) | 2014-01-13 | 2014-01-13 | Self-adaptive electromagnetic induction type current becomes torshional vibration damper |
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| CN103711834A true CN103711834A (en) | 2014-04-09 |
| CN103711834B CN103711834B (en) | 2015-10-21 |
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| CN201410013001.XA Active CN103711834B (en) | 2014-01-13 | 2014-01-13 | Self-adaptive electromagnetic induction type current becomes torshional vibration damper |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105915015A (en) * | 2016-05-31 | 2016-08-31 | 武汉理工大学 | Ship transmission shafting vibration reduction energy recovery device |
| CN106969086A (en) * | 2017-03-27 | 2017-07-21 | 宁波大学 | A kind of magnetorheological torsional vibration damper for engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5007303A (en) * | 1988-04-13 | 1991-04-16 | Nissan Motor Co., Ltd. | Variable inertial mass flywheel |
| US5829319A (en) * | 1996-10-04 | 1998-11-03 | Vibratech, Inc. | Magneto-rheological torsional vibration damper |
| US20090183959A1 (en) * | 2006-05-30 | 2009-07-23 | Peter Klit | Torsional vibration damper |
| CN102168736A (en) * | 2011-05-05 | 2011-08-31 | 天津大学 | Magnetorheological torsional vibration damper for engine |
| CN103032492A (en) * | 2011-09-28 | 2013-04-10 | 株式会社电装 | Hydraulic braking device and valve timing adjusting apparatus |
-
2014
- 2014-01-13 CN CN201410013001.XA patent/CN103711834B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5007303A (en) * | 1988-04-13 | 1991-04-16 | Nissan Motor Co., Ltd. | Variable inertial mass flywheel |
| US5829319A (en) * | 1996-10-04 | 1998-11-03 | Vibratech, Inc. | Magneto-rheological torsional vibration damper |
| US20090183959A1 (en) * | 2006-05-30 | 2009-07-23 | Peter Klit | Torsional vibration damper |
| CN102168736A (en) * | 2011-05-05 | 2011-08-31 | 天津大学 | Magnetorheological torsional vibration damper for engine |
| CN103032492A (en) * | 2011-09-28 | 2013-04-10 | 株式会社电装 | Hydraulic braking device and valve timing adjusting apparatus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105915015A (en) * | 2016-05-31 | 2016-08-31 | 武汉理工大学 | Ship transmission shafting vibration reduction energy recovery device |
| CN105915015B (en) * | 2016-05-31 | 2018-08-07 | 武汉理工大学 | A kind of marine drive shafting vibration damping energy recycle device |
| 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 |
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|---|---|
| CN103711834B (en) | 2015-10-21 |
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