CN1150569C - Method for localizing sensitive material to magnetic-field responser-solid-phase powder material, and damping device thereof - Google Patents

Method for localizing sensitive material to magnetic-field responser-solid-phase powder material, and damping device thereof Download PDF

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CN1150569C
CN1150569C CNB991200446A CN99120044A CN1150569C CN 1150569 C CN1150569 C CN 1150569C CN B991200446 A CNB991200446 A CN B991200446A CN 99120044 A CN99120044 A CN 99120044A CN 1150569 C CN1150569 C CN 1150569C
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solid
powder material
phase powder
magnetic
magneto
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CN1251465A (en
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玲 邱
邱玲
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Priority to PCT/CN2000/000419 priority patent/WO2001034997A1/en
Priority to AU12665/01A priority patent/AU1266501A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
    • H01F1/447—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids characterised by magnetoviscosity, e.g. magnetorheological, magnetothixotropic, magnetodilatant liquids
    • 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
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/26—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper characterised by adjusting or regulating devices responsive to exterior conditions
    • F16F13/30—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper characterised by adjusting or regulating devices responsive to exterior conditions comprising means for varying fluid viscosity, e.g. of magnetic or electrorheological fluids
    • F16F13/305—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper characterised by adjusting or regulating devices responsive to exterior conditions comprising means for varying fluid viscosity, e.g. of magnetic or electrorheological fluids magnetorheological
    • 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
    • F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
    • F16F9/46—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
    • 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)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid-Damping Devices (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

The present invention relates to a method and a damping device for localizing a sensitive magnetic field response material namely a solid-phase powder material. The sensitive magnetic field response material namely the solid-phase powder material larger than the submicron level in magnetorheologic fluid is limited in an inner space area formed by a filter and the magnetorheologic fluid damping device. After the carrier of the solid-phase powder material in the magnetorheologic fluid flows into the inner space area, the carrier and the solid-phase powder material stored in the inner space area form magnetorheologic fluid. The solid-phase powder material stored in the inner space area is separated from the carrier of the solid-phase powder material after passing through the filter, and the carrier flows out from the area. The method and the device completely avoid the problems of the phase separation, the abrasion and the ageing of the magnetorheologic fluid, and the pollution and abrasion of the magnetorheologic fluid to the solid-phase powder material of application devices, etc. The present invention reduces cost, enhances reliability, strengthens aging resistance, and notably enhances the magnetorheologic effect of the magnetorheologic fluid.

Description

The method and the damping device thereof of the localization of magnetic responsiveness solid-phase powder material
Technical field
The present invention relates to a kind of method and damping device thereof that makes greater than the magnetic responsiveness smart material-solid-phase powder material localization of submicron order.
Be different from the magnetic fluid stabilising system, magneto-rheological fluid is a kind of astable system of functional mixture material that is suspended with magnetic responsiveness smart material-solid-phase powder material in fluid carrier.Adding under the action of a magnetic field rheological behavior generation marked change of its fluid itself.Generally speaking, the granularity of magnetic responsiveness smart material-solid-phase powder material is a submicron order in the magnetic fluid stabilising system, and the granularity of magnetic responsiveness smart material-solid-phase powder material is that micron order arrives several millimeters in the astable system of magneto-rheological fluid, and is promptly big by 10 3To 10 6Times, thereby quantitative change has caused the variation of matter on the characteristic.Apparently, adding under the action of a magnetic field, the apparent viscosity of the astable system of magneto-rheological fluid becomes 10 1To 10 8Doubly change, marked change is taking place but come down to the astable system rheological behavior of magneto-rheological fluid.Can flow freely under no externally-applied magnetic field effect as the astable system of magneto-rheological fluid, and can be changed into plastic body under the action of a magnetic field adding, in addition semi-solid.People will be called magnetic rheology effect adding the marked change that the astable system rheological behavior of magneto-rheological fluid is taken place under the action of a magnetic field.Thereby the astable system of this magneto-rheological fluid (hereinafter to be referred as magneto-rheological fluid) can be used for providing damping adding the rheological behavior that is embodied under the action of a magnetic field, as magneto-rheological fluid and device thereof being mainly used in half initiatively energy dissipating of various plant equipment and building, half active damping, half active buffer, half active shock insulation, become rigidity control, moment of torsion control, industries such as pressure flow pulsation control and pipeline vibration inhibition in the electrohydraulic servo-controlling system are to provide cheap, function admirable, performance and price is compared the high electromechanical integration new high-tech product of full active system.Have great significance in the level of above industry for improving the China and even the world.
Compare with electrorheological fluid, magneto-rheological fluid has its significant advantage: 1) under cheap process technology condition, do not need to apply highfield; 2) magnetic rheology effect is than the strong at least order of magnitude of electric rheological effect; 3) loose relatively to the requirement of environment for use condition; 4) existing magnetic technology maturation, soft magnet powder have been produced in enormous quantities etc.But similar to electrorheological fluid, magneto-rheological fluid exists fatal weakness equally: phase-splitting.Phase-splitting is the essential place of the especially astable system of non-colloidal dispersion, mainly be in this system the dispersate granularity in the decentralized medium greater than due to the sub-micron utmost point.Though use half initiatively energy dissipating, half active damping, half active buffer, half that the device of magneto-rheological fluid mainly concentrates on various plant equipment and building initiatively shock insulation, become industry such as pressure flow pulsation control and pipeline vibration inhibition in rigidity control, moment of torsion control, the electrohydraulic servo-controlling system.
Magneto-rheological fluid and damping device thereof such as world patent WO94/00704 " MAGNETORHEOLOGICAL FLUID DEVICES " (magneto-rheological fluid device) and world patent WO98/00653 " CONTROLLABLE VIBRATION APPARATUS " (controlled vibrating device), all there is the shortcoming of the following aspects in their employed magneto-rheological fluids: (one) phase-splitting, growth along with standing time, in the magneto-rheological fluid greater than the solid-phase powder material of submicron order can with the fluid carrier phase-splitting, though on well-beaten basis, its magnetic rheology effect is of slight difference, but use often for great majority and bring inconvenience, fully stir once more so that its homogeneous phase otherwise have only; (2) to using the abrasion of system, owing to be suspended in solid-phase powder material metal and its alloy often in the magneto-rheological fluid, they circulate in the application system high speed with its carrier, make system and use the components and parts abrasion, influence useful life; (3) the magneto-rheological fluid resistance to ag(e)ing is poor, because in order to improve the physical stability of magneto-rheological fluid, the solid-phase powder material in the magneto-rheological fluid is of a size of micron order, along with the increase of solid-phase powder material surface oxidation layer thickness, magnetic rheology effect weakens, and it is poor to embody its resistance to ag(e)ing; (4) cost height, for physics and the chemical stability of improving magneto-rheological fluid, high-quality powder valency height when using, often needs a large amount of magneto-rheological fluids and a large amount of high-quality powders in the large-scale circulatory system, thereby the cost height; (5) well-known, in certain volume percentage, magnetic rheology effect significantly increases with the increase of volume percentage, but under the prerequisite that flowability requires, the percent by volume of the solid-phase powder material that is added can not be too high, though magnetic rheology effect is than the strong order of magnitude of electric rheological effect, still seem a little less than some for some application scenario; (6) under the prerequisite that flowability requires, generally must add surfactant, but,, thereby bring corrosion with relevant seal for application device as acid surface active agent and basic surface activating agent because the surfactant that is added is a polar material; (7) use magneto-rheological fluid in large-scale application device and system, often need a large amount of magneto-rheological fluids, from the anti-dust pollution progression of the circulatory system, magneto-rheological fluid is " dirty oil " (dirty oil), obviously is a kind of artificial dust pollution; (8) although the remanent magnetism of soft magnetic material, especially soft magnet powder is less, but for some soft magnet powder, as the carbon steel powder, remanent magnetism still can not go to disregard suddenly, and the streaming potential in the circulatory system must cause electromagnetic pollution.
Summary of the invention
Purpose of the present invention is intended to the shortcoming at above-mentioned prior art existence, a kind of method that makes greater than the magnetic responsiveness smart material-solid-phase powder material localization of submicron order is provided, be about to be limited in filter and the zone, the formed inner space of magneto-rheological fluid damping device greater than the solid-phase powder material of submicron order, carrier greater than the magnetic responsiveness smart material-solid-phase powder material of submicron order is flowed into, flow out the above zone, inner space, and forming the local magneto-rheological fluid in the zone, inner space as mentioned above, and provide the magneto-rheological fluid damping device that forms according to this principle.
The implementation of the object of the invention is: the method for a kind of magnetic responsiveness solid-phase powder material localization is provided with filter at the dirty end of the magnetorheological fluid damper that magneto-rheological fluid passed through, or at the two ends of magnetorheological fluid damper filter is set respectively; To be stored in greater than the magnetic responsiveness solid-phase powder material of submicron order by in filter and the zone, the formed inner space of magnetorheological fluid damper; Described magneto-rheological fluid is by constituting greater than the magnetic responsiveness solid-phase powder material of submicron order with greater than the carrier of the magnetic responsiveness solid-phase powder material of submicron order; Described is that grain size is in 0.001-100 millimeter scope greater than submicron order.
The magnetic responsiveness solid-phase powder material is a soft magnet powder; The carrier of magnetic responsiveness solid-phase powder material is liquid or gas or the gas-liquid mixture that contains additive; Additive is a surfactant, and the addition of surfactant is below 10% of carrier.
Solid-phase powder material scribbles face coat; Described coating is to improve magnetic conductance coating or antirust coat or be used for the insulating coating that magneto-rheological fluid magnetic responsiveness solid-phase powder material is handled.
The size of magnetic responsiveness solid-phase powder material is 0.001 millimeter to 5 millimeters.
Pattern greater than the magnetic responsiveness solid-phase powder material of submicron order is sheet or needle-like or ellipsoid shape or spherical.
The amount of fill of magnetic responsiveness solid-phase powder material is 10% to 90% of an entire inner space volume, and its amount of fill comprises magnetic responsiveness solid-phase powder material formed porosity between powder when pine is adorned.
The damping device of a kind of magnetic responsiveness solid-phase powder material localization is made of magnetorheological fluid damper and filter, and filter bits is in the dirty end of the magnetorheological fluid damper that magneto-rheological fluid passed through, or at the two ends of magnetorheological fluid damper; Magnetorheological fluid damper is to be made of the air gap in magnetic field and the magnetic field; Magnetic field is formed by charged solenoid; Air gap in the magnetic field is arranged on charged solenoidal periphery, or be arranged on interior edge of charged solenoidal pipe and the uneven direction layout of charged solenoid axis, or be arranged on the uneven direction layout in charged solenoidal periphery and the inner edge of charged solenoid and solenoidal axis simultaneously.
Described edge is arranged with the not parallel direction of solenoidal axis, is along arranging with the direction of solenoidal axis normal.
Air gap in the described magnetic field is multistage, at different levels being in series or parallel connection.
Described filter is the porous material filter core, and its filtering accuracy is 0.0001 millimeter to 0.05 millimeter.
Advantage of the present invention is: (one) has avoided the phase-splitting problem of magneto-rheological fluid in system fully; (2) greatly suppressed magneto-rheological fluid to using the abrasion of element and system; (3) owing to can adopt large-sized magnetic responsiveness smart material-solid-phase powder material, the magneto-rheological fluid resistance to ag(e)ing strengthens greatly; (4) there is no need to prepare submicron order magnetic responsiveness smart material-solid-phase powder material for the physical stability of improving magneto-rheological fluid; (5) consumption of magnetic responsiveness smart material-solid-phase powder material is few, and cost is low; (6) on the basis of not improving general magneto-rheological fluid cost, can adopt high-quality, the quick material-solid-phase powder material of high-performance magnetic field responder; (7), thereby can significantly improve the magnetic rheology effect of magneto-rheological fluid owing to can increase the volume fraction of magnetic responsiveness smart material-solid-phase powder material at local; (8) also reduced of the powder pollution of magnetic responsiveness smart material-solid-phase powder material simultaneously for application system.
Description of drawings
Fig. 1 makes the method schematic diagram greater than the magnetic responsiveness smart material-solid-phase powder material localization of submicron order.
Fig. 2 local magneto-rheological fluid damping device structure principle chart (interior formula).
Fig. 3 local magneto-rheological fluid damping device structure principle chart (outer formula).
Fig. 4 local magneto-rheological fluid damping device structure principle chart (interior formula) embodiment.
Fig. 5 local magneto-rheological fluid damping device structure principle chart (outer formula) embodiment.
Embodiment
With reference to Fig. 1, make method be greater than the magnetic responsiveness smart material-solid-phase powder material localization of submicron order, to be limited in greater than the magnetic responsiveness smart material-solid-phase powder material of submicron order by in filter B and the zone, the formed inner space of local magnetorheological fluid damper C (unidirectional), or will be limited in greater than the magnetic responsiveness smart material-solid-phase powder material of submicron order by in filter A, B and the zone, the formed inner space of local magnetorheological fluid damper C (two-way).After the carrier of described local magneto-rheological fluid solid-phase powder material flows into above-mentioned inner space, the solid-phase powder material that stores promptly and in this inner space forms the local magneto-rheological fluid, separate with the carrier of this solid powder by the solid-phase powder material that stores in this inner space after the filter B, carrier flows out this inner space (unidirectional), in like manner, during reverse flow, separate with the carrier of this solid powder by the solid-phase powder material that stores in this inner space behind the filter A, carrier flows out this inner space (two-way).
Will be limited in greater than the solid-phase powder material of submicron order in filter and the zone, the formed inner space of local magnetorheological fluid damper described in the goal of the invention, make carrier inflow greater than the magnetic responsiveness smart material-solid-phase powder material of submicron order, flow out the above zone, inner space, and forming the local magneto-rheological fluid in the zone, inner space as mentioned above, described local magneto-rheological fluid is by the magnetic responsiveness smart material-solid-phase powder material greater than submicron order, carrier greater than the magnetic responsiveness smart material-solid-phase powder material of submicron order constitutes
The carrier of magnetic responsiveness smart material-solid-phase powder material is generally liquid, gas or the gas-liquid mixture that has additive in the local magneto-rheological fluid described in the goal of the invention, and is best for having the liquids and gases of additive.The above liquid comprises various free from corrosion liquid, as magnetic fluid stabilising system, various mineral oil (gasoline, kerosene and diesel oil), various silicone oil, various siliceous copolymer, chlorinated hydrocarbon, hydraulic oil, water and above mixtures of liquids.The above gas comprises various non-corrosiveness gases and Compressed Gas, as air.
The carrier of magnetic responsiveness smart material-solid-phase powder material is generally the liquid that has additive in the local magneto-rheological fluid described in the goal of the invention, and described additive is various surfactants, as oleic acid, poly-ethanol, diglycol.Generally speaking the addition of surfactant is 0% to 10% of a carrier bulk, and the best is 0% to 5%.
Magnetic responsiveness smart material-solid-phase powder material is a soft magnet powder in the local magneto-rheological fluid described in the goal of the invention, is generally various carbon steel powder and powdered alloy steel such as TiCrCuMo, 17Cr-1Mo, 18Cr-2Mo, Fe-Si-Al, ε-Fe 3N, iron, cobalt, nickel and alloyed powder thereof, especially pure iron and ferrous alloy such as FeCoNi, the mixture of FeCoLi, pure cobalt and cobalt-base alloys, pure nickel and nickel-base alloy and above solid-phase powder material.
Magnetic responsiveness smart material-solid-phase powder material is the soft magnet powder that scribbles face coat in the local magneto-rheological fluid described in the goal of the invention, the various carbon steel powder of face coat and powdered alloy steel such as TiCrCuMo have been generally, 17Cr-1Mo, 18Cr-2Mo, Fe-Si-Al, ε-Fe 3N, iron, cobalt, nickel and alloyed powder thereof, especially pure iron and ferrous alloy such as FeCoNi, the mixture of FeCoLi, pure cobalt and cobalt-base alloys, pure nickel and nickel-base alloy and above solid-phase powder material.
Magnetic responsiveness smart material-solid-phase powder material is the soft magnet powder that scribbles face coat in the local magneto-rheological fluid described in the goal of the invention, and described coating is generally to be improved magnetic conductance coating such as superconduction magnetic material, rush-resisting material and be used for the insulating coating that the electrorheological fluid powder is handled.
The size of the powder of magnetic responsiveness smart material-solid-phase powder material is at 0.001 millimeter to 100 millimeters in the local magneto-rheological fluid described in the goal of the invention, stock size is 0.001 millimeter to 5 millimeters, for the liquid-carrier optimum size is 0.015 millimeter to 1 millimeter, for the carrier gas optimum size is 0.001 millimeter to 0.1 millimeter, is 0.01 millimeter to 0.5 millimeter for gas-liquid mixed carrier the best.
In the local magneto-rheological fluid described in the goal of the invention pattern of magnetic responsiveness smart material-solid-phase powder material be sheet, needle-like, ellipsoid shape and spherical with and composition thereof, be generally ellipsoid shape, spherical.
The amount of fill of magnetic responsiveness smart material-solid-phase powder material in inner space as mentioned above is 1% to 100% of entire inner space volume in the local magneto-rheological fluid described in the goal of the invention, is generally 10% to 90%, and the best is 30% to 80%.
The loading of magnetic responsiveness smart material-solid-phase powder material in inner space as mentioned above is 1% to 100% of entire inner space volume in the local magneto-rheological fluid described in the goal of the invention, be generally 10% to 90%, the best is 30% to 80%, and described amount of fill comprises formed porosity between pine when dress powder of powder.
The carrier of magnetic responsiveness smart material-solid-phase powder material is generally liquid, gas and the gas-liquid mixture that has additive in the local magneto-rheological fluid described in the goal of the invention, and is best for having the liquids and gases of additive.The above liquid comprises various free from corrosion liquid, and as the magnetic fluid stabilising system, described magnetic fluid stabilising system can be used for improving the magnetic permeability of described local strong magnetic flux fluid, to improve magnetic rheology effect.
The carrier of magnetic responsiveness smart material-solid-phase powder material is generally liquid, gas and the gas-liquid mixture that has additive in the local magneto-rheological fluid described in the goal of the invention, and is best for having the liquids and gases of additive.The above liquid comprises various free from corrosion liquid, and as the magnetic fluid stabilising system, described magnetic fluid stabilising system generally is to be made of the magnetic responsiveness smart material-solid-phase powder material of submicron order, decentralized medium and additive.Magnetic responsiveness smart material-the solid-phase powder material of submicron order is a soft magnet powder, is generally various carbon steel powder and powdered alloy steel such as TiCrCuMo, 17Cr-1Mo, 18Cr-2Mo, Fe-Si-Al, ε-Fe 3N, iron, cobalt, nickel and alloyed powder thereof, especially pure iron and ferrous alloy such as FeCoNi, the mixture of FeCoLi, pure cobalt and cobalt-base alloys, pure nickel and nickel-base alloy and above solid-phase powder material.The pattern of the magnetic responsiveness smart material-solid-phase powder material of submicron order be sheet, needle-like, ellipsoid shape and spherical with and composition thereof, be generally ellipsoid shape, spherical.The amount of the magnetic responsiveness smart material-solid-phase powder material of submicron order is 0% to 40% of a decentralized medium, and the best is 5% to 30%.Liquid, gas and gas-liquid mixture, best for having the liquids and gases of additive.The above liquid comprises various free from corrosion liquid, various mineral oil (gasoline, kerosene and diesel oil), various silicone oil, various siliceous copolymer, chlorinated hydrocarbon, hydraulic oil, water and above mixtures of liquids.The above gas comprises various non-corrosiveness gases and Compressed Gas, as air.Described additive is various surfactants, as oleic acid, poly-ethanol, diglycol.Generally speaking the addition of surfactant is 0% to 10% of a carrier bulk, and the best is 0% to 5%.
With reference to Fig. 2, Fig. 3, wherein 1 is interior formula solenoid; 2 is interior formula magnetic pole one; 3 is interior formula magnetic pole two; 4 are interior formula magnetic conductor.5 is outer formula magnetic pole one; 6 is outer formula magnetic pole two; 7 is outer formula magnetic core; 8 is outer formula magnetism-isolating loop; 9 is outer formula magnetic guiding loop; 10 are outer formula solenoid.Described damping device is made of the air gap D in magnetic field and the magnetic field, when magnetic responsiveness smart material-solid-phase powder material passes through air gap D with its carrier, as long as flow direction is not parallel with the magnetic direction that is acted on, under the action of a magnetic field, magnetic responsiveness smart material-solid-phase powder material is reunited at the magnetic pole near zone in the local magneto-rheological fluid, thereby the generation magnetic rheology effect, filter A (if unidirectional is established) is established in the outlet of solid powder carrier in the local magneto-rheological fluid.
Local magneto-rheological fluid damping device described in the goal of the invention, it is made of local magneto-rheological fluid damping device and filter, described damping device is made of the air gap D in magnetic field and the magnetic field, when magnetic responsiveness smart material-solid-phase powder material passes through air gap D with its carrier, as long as flow direction is not parallel with the magnetic flux density direction that is acted on, under the action of a magnetic field, magnetic responsiveness smart material in the local magneto-rheological fluid-solid-phase powder material is reunited, generally speaking magnetic field is permanent-magnetic field, electromagnetic field, and the best is by the formed electromagnetic field of charged solenoid; Air gap D in the magnetic field generally can be arranged on charged solenoidal periphery (outer formula), also can be located at edge and the uneven direction layout of charged solenoid axis (interior formula) in the charged solenoidal pipe, the best is that edge and charged solenoid axis vertical direction are arranged (interior formula).
Local magneto-rheological fluid damping device described in the goal of the invention, it is made of local magnetorheological fluid damper and filter, described damper is made of the air gap D in magnetic field and the magnetic field, when magnetic responsiveness smart material-solid-phase powder material passes through air gap D with its carrier, as long as flow direction is not parallel with the magnetic flux density direction that is acted on, under the action of a magnetic field, magnetic responsiveness smart material in the local magneto-rheological fluid-solid-phase powder material is reunited, generally speaking magnetic field is permanent-magnetic field, electromagnetic field, and the best is by the formed electromagnetic field of charged solenoid; Air gap D in the magnetic field generally can be arranged on charged solenoidal periphery (outer formula), also can be located in the charged solenoidal pipe along arranging (interior formula) with the uneven direction of charged solenoid axis, also can be located at simultaneously in charged solenoidal periphery and the charged solenoidal pipe along and the uneven direction of charged solenoid axis arrange (hybrid), wherein be located in the charged solenoidal pipe when arranging with the uneven direction of charged solenoid axis best for along and charged solenoid axis vertical direction arrange (interior formula)
Air gap D in the magnetic field described in the local magneto-rheological fluid damping device described in the goal of the invention can be similar multistage being in series; Can be similar multistage being in parallel.
Air gap D in the magnetic field described in the local magnetorheological fluid damper described in the goal of the invention can be different types (non-similar) multistage between series connection, can be the parallel connection of different types (non-similar) between multistage.
With reference to Fig. 4, this local magneto-rheological fluid damping device structure is a local magneto-rheological fluid piston component, and it is by first end cap 30, O shape circle 31, the first filter cores 32, the first magnetic conductors 33, O shape circle 34, O shape circle 35, O shape circle 36, first every magnetic pressure ring 37, the second magnetic conductors 38, every magnetic pressure ring 39, magnetic shield pipe 40, O shape circle 41, the three magnetic conductors 42, O shape circle 43, O shape circle 44, the second filter cores 45, O shape circle 46, piston rod 47, lead and sleeve pipe 48, the second end caps 49, trip bolt 50, every magnetic shell body 51, solenoid 52 and pipe support and O shape circle 53 constitute.
Uniform turnover oilhole and corresponding passage are arranged on first end cap 30, by first end cap 30, O shape circle 31, the first filter cores 32, the first magnetic conductors 33, O shape circle 34 and formed a filter cavity every magnetic shell body 51.Uniform oilhole and corresponding passage are also arranged on the 3rd magnetic conductor 42, and enclose 46, second end cap 49 and formed another filter cavity every magnetic shell body 51 with O shape circle 43, O shape circle 44, second filter core 45, O shape.More than two cavitys communicate by oilhole uniform on first magnetic conductor 33, second magnetic conductor 38 and the 3rd magnetic conductor 42 and corresponding passage.
Inner end by first magnetic conductor 33 and the 3rd magnetic conductor 42 forms magnetic pole and magnetic field air gap, and this magnetic field air gap is divided into two every magnetic pressure ring 39, second magnetic conductor 38 every magnetic pressure ring 37 and second by first.Adding under the action of a magnetic field, just forming two local magnetorheological fluid dampers that are in series.
The helical tube chamber of being formed by first magnetic conductor 33 and the 3rd magnetic conductor 42 simultaneously, in establish solenoid 52 and pipe support, its lead-in wire is drawn outside this device through trip bolt 50 endoporus and piston rod 47 endoporus by the fairleads in the Three Gorges magnetic conductor 42.
Wherein, the pass between each parts is, second end cap 49 by trip bolt 50 with tighten every magnetic shell body 51 and locked (also can with end cap 49 with every magnetic shell body 51 cast solids, to reduce processing cost) form assembly one.Cover upper O-shape ring 35 and magnetic shield pipe 40 on magnetic conductor 33, again solenoid 52 and pipe support are enclosed within on the magnetic shield pipe 40, will be every magnetic pressure ring 37, magnetic conductor 38, put into magnetic shield pipe 40 successively every magnetic pressure ring 39, then with magnetic conductor 42 by O shape circle 36 and O shape circle 41 pack into magnetic conductor 33 and assembly thereof, thereby formed assembly two.Then assembly two is seated in assembly one by O shape circle 43, O shape circle 44, filter core 45 and O shape circle 46.Then O shape circle 34, magnetic conductor 33, filter core 32, O shape circle 31 and end cap 30 are packed into successively.
Filter described in the goal of the invention is by bearing certain pressure reduction, having the porous material filter core of certain intensity and corresponding housing to constitute, as the thermal sintering tubing and the sheet material of various metal powders and composition thereof, ceramic post sintering forming tube and sheet material.
Filter described in the goal of the invention is by bearing certain pressure reduction, having the porous material filter core of certain intensity and corresponding housing to constitute, as the thermal sintering tubing and the sheet material of various metal powders and composition thereof, ceramic post sintering forming tube and sheet material.Its filtering accuracy is 0.00001 millimeter to 0.1 millimeter, especially is 0.00001 millimeter to 0.05 millimeter, and the best is 0.001 millimeter to 0.04 millimeter.
Filter described in the goal of the invention is by bearing certain pressure reduction, there are the porous material filter core and the corresponding housing of certain intensity to constitute, as the thermal sintering tubing and the sheet material of various metal powders and composition thereof, as copper powder, iron powder, stainless steel powder, aluminium and alloyed powder thereof, above various powder reason mixture thermal sintering tubing and sheet material.
With reference to Fig. 5, this local magneto-rheological fluid damping device structure is a local magneto-rheological fluid piston component, and it is by end cap 70, O shape circle 71, filter core 72, every magnetic shell body 73, magnetic conductor 74, O shape circle 75, O shape circle 76, every magnet 77, O shape composite rim 78, solenoid 79 and pipe support, 80-magnetic conductor 80, shape circle 81, shape circle 82, O shape circle 83, O shape circle 84, filter core 85, trip bolt 86, end cap 87, O shape circle 88, O shape circle 89, piston rod 90 and lead 91 and sleeve pipe constitute.
Uniform turnover oilhole and corresponding passage are arranged on the end cap 70, end cap 70, O shape circle 71, filter core 72 has been formed a filter cavity every magnetic shell body 73 and O shape circle 75.Uniform turnover oilhole and corresponding passage are also arranged, end cap 87, O shape circle 83, filter core 85, O shape circle 88 and formed another filter cavity on the end cap 87 every magnetic shell body 73.More than two cavitys be connected by the two magnetic field air gaps that are in series.The two magnetic field air gaps that are in series are to be made of magnetic conductor magnetic conductor 80 and another assembly.This assembly is by magnetic conductor 74, O shape circle 76, cover 86 endoporus by trip bolt and piston rod 90 endoporus are drawn outside this device every magnet 77, solenoid 79 and pipe support, magnetic conductor 81 and O shape circle 82.
Wherein, the relation object between each parts is similar to local magneto-rheological fluid damping device structure example one (interior formula).

Claims (10)

1, the method for a kind of magnetic responsiveness solid-phase powder material localization is characterized in that, at the dirty end of the magnetorheological fluid damper that magneto-rheological fluid passed through filter is set, or at the two ends of magnetorheological fluid damper filter is set respectively; To be stored in greater than the magnetic responsiveness solid-phase powder material of submicron order by in filter and the zone, the formed inner space of magnetorheological fluid damper; Described magneto-rheological fluid is by constituting greater than the magnetic responsiveness solid-phase powder material of submicron order with greater than the carrier of the magnetic responsiveness solid-phase powder material of submicron order; Described is that grain size is in 0.001-100 millimeter scope greater than submicron order.
2, the method for claim 1 is characterized in that, described magnetic responsiveness solid-phase powder material is a soft magnet powder; The carrier of magnetic responsiveness solid-phase powder material is liquid or gas or the gas-liquid mixture that contains additive; Additive is a surfactant, and the addition of surfactant is below 10% of carrier.
3, the method for claim 1 is characterized in that, described solid-phase powder material scribbles face coat; Described coating is to improve magnetic conductance coating or antirust coat or be used for the insulating coating that magneto-rheological fluid magnetic responsiveness solid-phase powder material is handled.
4, the method for claim 1 is characterized in that, the size of described magnetic responsiveness solid-phase powder material is 0.001 millimeter to 5 millimeters.
5, the method for claim 1 is characterized in that, is sheet or needle-like or ellipsoid shape or spherical greater than the pattern of the magnetic responsiveness solid-phase powder material of submicron order.
6, the method for claim 1 is characterized in that, the amount of fill of magnetic responsiveness solid-phase powder material is 10% to 90% of an entire inner space volume, and its amount of fill comprises magnetic responsiveness solid-phase powder material formed porosity between powder when pine is adorned.
7, the damping device of a kind of magnetic responsiveness solid-phase powder material localization, it is characterized in that, be made of magnetorheological fluid damper and filter, filter bits is in the dirty end of the magnetorheological fluid damper that magneto-rheological fluid passed through, or at the two ends of magnetorheological fluid damper; Magnetorheological fluid damper is to be made of the air gap in magnetic field and the magnetic field; Magnetic field is formed by charged solenoid; Air gap in the magnetic field is arranged on charged solenoidal periphery, or be arranged on interior edge of charged solenoidal pipe and the uneven direction layout of charged solenoid axis, or be arranged on the uneven direction layout in charged solenoidal periphery and the inner edge of charged solenoid and solenoidal axis simultaneously.
8, damping device as claimed in claim 7 is characterized in that, described edge is arranged with the not parallel direction of solenoidal axis, is along arranging with the direction of solenoidal axis normal.
9, damping device as claimed in claim 7 is characterized in that, the air gap in the described magnetic field is multistage, at different levels being in series or parallel connection.
10, damping device as claimed in claim 7 is characterized in that, described filter is the porous material filter core, and its filtering accuracy is 0.0001 millimeter to 0.05 millimeter.
CNB991200446A 1999-11-11 1999-11-11 Method for localizing sensitive material to magnetic-field responser-solid-phase powder material, and damping device thereof Expired - Fee Related CN1150569C (en)

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CNB991200446A CN1150569C (en) 1999-11-11 1999-11-11 Method for localizing sensitive material to magnetic-field responser-solid-phase powder material, and damping device thereof
PCT/CN2000/000419 WO2001034997A1 (en) 1999-11-11 2000-11-09 Localizing method for solid powder of magnetic induction and damping apparatus thereof
AU12665/01A AU1266501A (en) 1999-11-11 2000-11-09 Localizing method for solid powder of magnetic induction and damping apparatus thereof

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CN106733177B (en) * 2016-12-24 2018-08-24 浙江师范大学 A kind of ore separation device based on magnetic rheology effect
CN113964968B (en) * 2020-07-16 2024-03-15 江门市邦特电子电器有限公司 Permanent magnet ring, motor using same, manufacturing method and mold

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US5277281A (en) * 1992-06-18 1994-01-11 Lord Corporation Magnetorheological fluid dampers
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US5547049A (en) * 1994-05-31 1996-08-20 Lord Corporation Magnetorheological fluid composite structures
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