CN2258553Y - Damping force controllable magnetic puwder vibration-damper - Google Patents
Damping force controllable magnetic puwder vibration-damper Download PDFInfo
- Publication number
- CN2258553Y CN2258553Y CN 94240200 CN94240200U CN2258553Y CN 2258553 Y CN2258553 Y CN 2258553Y CN 94240200 CN94240200 CN 94240200 CN 94240200 U CN94240200 U CN 94240200U CN 2258553 Y CN2258553 Y CN 2258553Y
- Authority
- CN
- China
- Prior art keywords
- magnetic
- elastic element
- cover plate
- magnet case
- magnetizer
- 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
Links
Images
Landscapes
- Vibration Prevention Devices (AREA)
Abstract
The utility model relates to a damping force controllable magnetic powder vibration-damper, which is composed of an inner and an outer magnetizers 3, 4, an excitation coil 6, magnetic powder 5, an elastic element 6, a connecting cover plate, a powder blocking ring 2, a sealed cover plate 1, and a conductive slip ring 10. The utility model is characterized in that the excitation coil 6 is wound on the inner magnetizer 3; the connecting cover plate 9 is rigidly connected with the outer magnetizer 4; the inner and the outer magnetizers 3, 4 are connected with the connecting cover plate 9 by the elastic element 8; the elastic element 8 is made of rubber, and the inner magnetizer 3, the outer magnetizer 4, the connecting cover plate 9, and the elastic element 8 are integrated by coaxial vulcanizing connection; magnetic powder 5 is filled in the gap which is formed by the inner magnetizer 3 and the outer magnetizer 4.
Description
It is the controlled magnetic vibration damper of damping force of resisting medium with the magnetic that the utility model relates to a kind of, is used for the vibration control of axle.
People often adopt damping technology in control machine or structural vibrations.On milling machine, boring machine, radial drilling machine, gear hobbing machine, motor and diesel engine, and on helicopter, boats and ships and automobile, use vibration damper to weaken vibration widely.At present, the vibration damper that people use has many kinds, comprises the solid friction vibration damper, and the undamped dynamic shock absorber is that have the damping dynamic shock absorber and the silicone oil-rubber of elastic element has damping dynamic shock absorber etc. with rubber.Wherein the undamped dynamic shock absorber is not suitable for the system of frequency conversion system or need vibration damping frequency band broad, though all the other vibration dampers all are applicable to said system, but following common shortcoming is arranged all, exactly when vibration damper uses that with the passing of time some state changes, as surface abrasion at the dry friction vibration damper, impacting force changes, silicon oil damper, the rubber shock absorber temperature change causes when silicon oil viscosity or rubber internal resistance change, its damping force just can not keep the optimum value set, effectiveness in vibration suppression is degenerated, it is also relatively more difficult to want adjusting or control, when being changed by the condition of vibration insulating system, the required optimal damping value that provides is also inequality, it is just difficult more to want adjusting or control, can not guarantee to obtain best effectiveness in vibration suppression, both made newly to manufacture and design the damping dynamic shock absorber had been arranged, also usually can not calculate required bigger optimal damping value by realization theory because of the restriction of material and structure, thereby do not reach optimum effectiveness in vibration suppression, the paper that Lv Zhenhua and Feng Zhendong (1992.No.3) deliver at " internal-combustion engine engineering " " automobile engine crankshaft damping dynamic vibration absorber design method and application " has more detailed elaboration and points out to this, usually because look after suitable tuning ratio ask for something is loosened in damping in practice.Though in theory, silicone oil rubber shock absorber etc. can obtain bigger damping, but because the corrosivity of silicone oil and rubber and be difficult for sealing, and shortcoming such as manufacturing process complexity, its application is restricted, and when service conditions such as temperature or operating conditions changed, its damping can not keep the bigger optimal damping value set, and damping is also uncontrollable.
It is restive, inaccessible or keep desirable shortcomings such as numerical value that the purpose of this utility model is to overcome the damping of above-mentioned traditional vibration damper, with magnetic is controlled resisting medium, the controlled magnetic vibration damper of design damping force is so that obtain best effectiveness in vibration suppression in application.
Technology contents of the present utility model: the magnetic vibration damper that the utility model damping force is controlled, mainly form by interior magnet case, outer magnetizer, field coil, magnetic and elastic element etc., its main feature is to fill magnetic in interior magnet case and the formed gap of outer magnetizer, because the electric current that field coil is defeated by in control just can be controlled the size of the damping that magnetic produces, so the damping of vibration damper has controllability.
With regard to example of the present utility model, be illustrated in conjunction with the accompanying drawings below.
Fig. 1 represents an exemplary construction schematic representation of the present utility model.
The controlled magnetic vibration damper of damping force that is used for shaft vibration control, by interior magnet case 3, outer magnetizer 4, field coil 6, magnetic 5, elastic element 8, connect cover plate 9, powder-blocking ring 2, sealed cover 1 and conducting slip ring 10 constitute, it is characterized in that: field coil 6 is on interior magnet case 3, connect cover plate 9 and outer magnetizer 4 rigid joint, interior magnet case 3, connect with elastic element 8 between outer magnetizer 4 and the connection cover plate 9, elastic element 8 usefulness rubber are made and with interior magnet case 3, outer magnetizer 4, connect cover plate 9 and elastic element 8 coaxial sulfurations and be connected into one, in interior magnet case 3 and outer magnetizer 4 formed gaps, fill magnetic 5.Interior magnet case 3 and outer magnetizer 4 are all made with electrical pure iron or low carbon steel, and the gap of the two formed filling magnetic 5 is not more than 3mm.Details are as follows.
In the above-mentioned example, when work, feed direct current (d.c.) for field coil 6 from conducting slip ring 10, the field coil 6 of energising excites magnetic field, the magnetic line of force that produces passes interior magnet case 3 and outer magnetizer 4 and is filled in by the magnetic 5 in the two formed gap and forms magnetic circuit 7, the magnetic chain that magnetic 5 is converted into have anti-shearing character, when interior magnet case 3 produces relative vibration displacement with outer magnetizer 4, shearing friction takes place and produces damping force consumption vibrational energy in magnetic chain inside, plays the effect of vibration damping.Change the size of electric current, just can change the size of shearing friction damping force, so just realized the purpose of control damping force.Again because the higher and inside and outside magnet case 3 of permeability of magnetic 5 and the gap less (being not more than 3mm) of 4 formed filling magnetics, therefore can in the gap, produce bigger magnetic intensity with less current, thereby make the shearing friction power of magnetic chain very big, can realize desired bigger optimal damping.
Specifically, for example of the present utility model shown in Figure 1, because outer magnetizer 4, connect cover plate 9 and treat to be become one by spool connecting rigidly of vibration damping, interior magnet case 3 is together with field coil 6 and powder-blocking ring 2 coasting body as vibration damper.And connect with elastic element 8 between inside and outside magnet case 3 and 4, so, when treating to be driven outer magnetizers 4 and produce torsional vibrations by connecting cover plate 9 by the axle of vibration damping, if feed electric current for field coil 6 by conducting slip ring 10 this moment, then magnetic is in loose condition (of surface), and the shearing friction damping force is not provided, and interior magnet case 3 and outer magnetizer 4 only depend on elastic element 8 contacts, this moment, this device played traditional rubber shock absorber, only provided elastic force and damping force by elastic element 8; If feed electric current for this moment field coil 6, then as previously mentioned, form magnetic circuit 7, therefore in the gap, produce the magnetic field of certain intensity, make magnetic 5 form magnetic chain with anti-shearing character, treat this moment to be driven outer magnetizer 4 torsional oscillations by the axle of vibration damping, certainly will try hard to drive interior magnet case 3 by magnetic chain and elastic element 8 together moves, but interior magnet case 3 has inertia together with field coil 6 and powder-blocking ring 2 formed coasting bodies, its motion always lags behind the motion of outer magnetizer 4, owing to there is this relative movement, so the magnetic chain in the gap produces the shearing friction damping, this damping combines with the internal damping of elastic element generation 8 this moment and the effect of elastic restoring force, to 4 damping effects of outer magnetizer, just treats by the axle of vibration damping and plays damping effect.Change the size of electric current, just can change the size of comprehensive damping force, so just can control the damping of vibration damper with electric current.If according to the requirement of system, a best comprehensive damping value need be provided, only need that then electric current is transferred to corresponding value and just can achieve the goal.If necessary, obstructed electric current then can be used as traditional rubber shock absorber and uses.In Fig. 1 structure, sealed cover 1 seals, the effect of powder-blocking ring 2 then be when the vibration damper no electric circuit, guarantee magnetic 5 do not go in the magnet case 3 formed cylindrical spaces.
Advantage of the present utility model: take magnetic as controlled resisting medium, can be by changing excitatory electricity The method control damping force of stream. Changed or shock absorber itself by the service condition of vibration damping system In the situation that some state changes, its damping can be controlled at required owing to using with the passing of time Good value. Can calculate required higher optimal damping value and it be controlled control by realization theory Simple and convenient, control power is little, just can obtain very big damping merit with very little electromagnetism control power Rate be conducive to be used with electronic circuit or computer, and damping is continuously adjustable. Again can when needing With obstructed electric current, be used as traditional shock absorber and use.
Claims (3)
1. the controlled magnetic vibration damper of damping force that is used for shaft vibration control, by interior magnet case (3), outer magnetizer (4), field coil (6), magnetic (5), elastic element (8), connect cover plate (9), powder-blocking ring (2), sealed cover (1) and conducting slip ring (10) constitute, it is characterized in that: field coil (6) is on interior magnet case (3), connect cover plate (9) and outer magnetizer (4) rigid joint, interior magnet case (3), connect with elastic element (8) between outer magnetizer (4) and the connection cover plate (9), elastic element (8) is made with rubber and with interior magnet case (3), outer magnetizer (4), connect cover plate (9) and the coaxial sulfuration of elastic element (8) and be connected into one, in interior magnet case (3) and the formed gap of outer magnetizer (4), fill magnetic (5).
2. vibration damper as claimed in claim 1 is characterized in that: interior magnet case (3) and outer magnetizer (4) are all made with electrical pure iron or low carbon steel, and the gap of the two formed filling magnetic (5) is not more than 3mm.
3. vibration damper as claimed in claim 1 is characterized in that: magnetic (5) can be selected from iron-cobalt-nickel based alloy magnetic powder, stainless steel is that magnetic, iron aluminium chromium are that magnetic, iron silicochromium are magnetic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94240200 CN2258553Y (en) | 1994-04-18 | 1994-04-18 | Damping force controllable magnetic puwder vibration-damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94240200 CN2258553Y (en) | 1994-04-18 | 1994-04-18 | Damping force controllable magnetic puwder vibration-damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2258553Y true CN2258553Y (en) | 1997-07-30 |
Family
ID=33847235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94240200 Expired - Fee Related CN2258553Y (en) | 1994-04-18 | 1994-04-18 | Damping force controllable magnetic puwder vibration-damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2258553Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001034997A1 (en) * | 1999-11-11 | 2001-05-17 | Ling Qiu | Localizing method for solid powder of magnetic induction and damping apparatus thereof |
| CN102606671A (en) * | 2012-03-28 | 2012-07-25 | 谢宁 | Bearing damping device with magnetorheological elastomer |
| CN102635664A (en) * | 2012-04-20 | 2012-08-15 | 谢宁 | Oscillating type magnetorheological damper |
| CN103727175A (en) * | 2014-01-13 | 2014-04-16 | 天津大学 | Rubber torsional vibration damper recycling vibration energy in electromagnetic mode |
| CN108412941A (en) * | 2018-04-27 | 2018-08-17 | 山东科技大学 | Three-dimensional mixes controllable type magnetic rheological liquid damper |
| CN111561543A (en) * | 2020-04-17 | 2020-08-21 | 中国矿业大学 | Vibration reduction system of tunneling machine inertial navigation combined positioning device and using method thereof |
-
1994
- 1994-04-18 CN CN 94240200 patent/CN2258553Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001034997A1 (en) * | 1999-11-11 | 2001-05-17 | Ling Qiu | Localizing method for solid powder of magnetic induction and damping apparatus thereof |
| CN102606671A (en) * | 2012-03-28 | 2012-07-25 | 谢宁 | Bearing damping device with magnetorheological elastomer |
| CN102635664A (en) * | 2012-04-20 | 2012-08-15 | 谢宁 | Oscillating type magnetorheological damper |
| CN102635664B (en) * | 2012-04-20 | 2013-09-18 | 谢宁 | Oscillating type magnetorheological damper |
| CN103727175A (en) * | 2014-01-13 | 2014-04-16 | 天津大学 | Rubber torsional vibration damper recycling vibration energy in electromagnetic mode |
| CN108412941A (en) * | 2018-04-27 | 2018-08-17 | 山东科技大学 | Three-dimensional mixes controllable type magnetic rheological liquid damper |
| CN111561543A (en) * | 2020-04-17 | 2020-08-21 | 中国矿业大学 | Vibration reduction system of tunneling machine inertial navigation combined positioning device and using method thereof |
| CN111561543B (en) * | 2020-04-17 | 2021-12-07 | 中国矿业大学 | Vibration reduction system of tunneling machine inertial navigation combined positioning device and using method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104500641B (en) | Birotor self-powered shock absorber based on magnetorheological elastomer | |
| CN2258553Y (en) | Damping force controllable magnetic puwder vibration-damper | |
| CN106969090B (en) | The magnetorheological half active torsional vibration damper integrated with active adjusted based on electromagnetism | |
| CN104747651B (en) | A kind of paralleling model semi-active vibration-isolating device | |
| CN107956839B (en) | A kind of compound Adjustable transmission system torsional vibration damper with particle damping and electromagnetic damping | |
| CN207884432U (en) | Ball screw type rotary generating device for Vibration of Vehicle Suspensions energy regenerating | |
| DE19717693A1 (en) | Actuator and damper device | |
| WO2003024784A1 (en) | Power generating and propelling system of vessel | |
| CN105465261B (en) | A kind of energy vehicle active suspension actuator of electromagnetism and control method thereof | |
| CN106402253A (en) | Torsional vibration adjustment device based on magnetorheology | |
| CN108087520A (en) | A kind of energy damper | |
| CN216325173U (en) | Particle damping and magnetorheological composite vibration damping boring cutter | |
| Seebacher | Dual mass flywheel | |
| CN103538471A (en) | Power divider and power assembly | |
| CN113661647B (en) | Energy conversion device and related system | |
| CN204403256U (en) | Birotor self-powered shock absorber based on magnetorheological elastomer | |
| DE10223426A1 (en) | Method for damping torque fluctuations in the drive train of a motor vehicle | |
| CN101113766A (en) | Hook joint with controllable damping moment | |
| CN1029755C (en) | Electrically controlled valve for pressure fluid | |
| CN114321315A (en) | Novel magnetorheological suspensions gear drive | |
| CN105782340B (en) | A kind of two-freedom torsional vibration damper | |
| CN204692451U (en) | Power plate and use the torsional vibration damper of this power plate, transmission system and automobile | |
| CN212524815U (en) | Giant magnetostrictive vibration exciter | |
| CN207955240U (en) | A kind of energy damping of automobile | |
| CN105546034A (en) | Impeller type inertia and damping device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |