CN104847830B - A kind of universal compound clearance magnetorheological damping unit and MR valve - Google Patents
A kind of universal compound clearance magnetorheological damping unit and MR valve Download PDFInfo
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- CN104847830B CN104847830B CN201510140333.9A CN201510140333A CN104847830B CN 104847830 B CN104847830 B CN 104847830B CN 201510140333 A CN201510140333 A CN 201510140333A CN 104847830 B CN104847830 B CN 104847830B
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- 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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- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K13/00—Other constructional types of cut-off apparatus; Arrangements for cutting-off
- F16K13/08—Arrangements for cutting-off not used
- F16K13/10—Arrangements for cutting-off not used by means of liquid or granular medium
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- 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
- F16F2224/00—Materials; Material properties
- F16F2224/04—Fluids
- F16F2224/045—Fluids magnetorheological
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The present invention relates to a kind of universal compound clearance magnetorheological damping unit.Magnetorheological damping unit includes coiling sleeve, valve element, coil, connecting pin etc..In this magnetorheological damping unit, the design of magnetic conduction annulus increased the registration in magnetic field and disc fluid course, decreases passive damping, improves system response time.Obtain the optimization physical dimension of magnetorheological damping unit by non-dimension analysis optimization method, improve damping unit and import and export pressure drop range of accommodation.Adopt the configuration of high permeability material and non-magnet material simultaneously, reduce leakage field, improve magnetic field utilization rate.This damping unit can be applicable in the field such as MR valve and magnetorheological damping amortisseur, applied range, compact conformation, function admirable, and practicality is high.
Description
Technical field
The present invention relates to magnetic rheological liquid and hydraulic control and magnetorheological damping CHANNEL OPTIMIZATION design field, more
It is related to a kind of versatility height body, there is composite damping gap, damping capacity optimized magnetorheological hydraulic control unit, this resistance
Buddhist nun's control unit can be used for pressure drop and flow-control in the fields such as machinery, vehicle, building, Aero-Space.
Background technology
Magnetic flow liquid is a kind of novel intelligent material.Magnetic flow liquid under the action of a magnetic field, can moment from flow good
Newtonian fluid is changed into Bingham semi-solid state, and this change is continuous, controlled, reversible.Excellent based on magnetic flow liquid
Characteristic, is applied to carry out substantial amounts of research both at home and abroad.These researchs focus mostly in MR damper and MR valve, and
Critical component therein, it is simply that a kind of damping control element, can be classified as magnetorheological damping control unit.Using magnetorheological
Fluid effect design MR valve, can by change magnet exciting coil electric current come controlled loading the magnetic field in magnetic flow liquid, with
Change the flow behavior of fluid, form pressure reduction, thus changing flow or providing damping force.Compare conventional hydraulic valve, MR valve
There is fast response time it is easy to control, there is broader pressure drop and damp adjustable range width.Further, since it is magnetorheological
The mechanical part no moving in liquid valve, therefore structure are simple, and noise is low, and energy consumption is little, wear-resistant, stable and reliable in work.Magnetorheological
Valve has been widely used.
A core topic of the research of MR valve is to improve the adjustable extent of inlet outlet pressure differential at present.And this scope with
Both sides factor is relevant.First, the magnetic induction in damping clearance；Second, liquid within MR valve for the magnetic flow liquid
The length of circulation road.Therefore, in magnetorheological structure design, first have to consideration is magnetic flow liquid in MR valve damping clearance
Interior flow direction must be vertical with magnetic direction；Next to that increase liquor stream within MR valve for the magnetic flow liquid as far as possible leading to
Road.Generally, can start with improving the adjustable extent of MR valve inlet and outlet pressure difference in terms of following two.One is to carry
Magnetic induction in high-damping gap, conventional method is to reduce the damping clearance width of MR valve.But this method has
The restrictive condition of itself：When magnetic flow liquid be long placed in unused, when enabling again, easily occur granule precipitate thus blocking between damping
Gap, leads to MR valve to lose efficacy.On the other hand improve the length of damping clearance, but this method can be subject to installing space and valve originally
The conditions such as the physical dimension of body limit and are difficult to realize.Therefore, design the magnetorheological of a kind of stable performance and structure relative compact
Valve, makes that the inlet outlet pressure differential of MR valve is bigger, pressure control range is wider, is the problem of industry urgent need to resolve.
In recent years, the design of MR valve and application have obtained certain development.As Chinese patent 200810065763.9
A kind of a kind of (MR valve of non-rectilinear fluid course) and Chinese patent 200810065316.3 (magnetic current of spiral flow passage
Become valve) led to by setting non-linear fluid course on the corresponding end face of MR valve positioning disk and magnetic conductive disk or spiral liquid flow
Road come to increase magnetic flow liquid flow path length.But ignore the magnetic field intensity and magnetic induction line distribution shadow to magnetic rheology effect
Ring, its effective damping gap, in the both sides of magnet exciting coil, does not utilize distribution and the trend of the magnetic line of force well, actually cannot
Effectively improve the adjustable extent of valve inlet outlet pressure differential, in addition damping clearance part from magnet exciting coil farther out, can reduce magnetic induction
Intensity causes response time slack-off, the harmful effect such as unstable properties.Chinese patent 200410022657.4 (has two kinds of liquor streams
The magnetic rheoliquid controlling valve of resistance channel) adopt annular and disc liquid flowing resistance passage simultaneously.Increased liquid flowing resistance to lead to
The section of shear in road, in the presence of little exciting current, liquid flowing resistance begins to change, the control model to magnetic flow liquid flow
Enclose expansion, but the annular fluid course in this valve arrangement does not make full use of coil magnetic field, reduce pressure reduction and adjust
Scope, disc fluid course is less with the registration of magnetic induction line, increased the passive damping of fluid course, and the system that extends is rung
Between seasonable, greatly reduce the effect that damping unit should play.
Content of the invention
Patent of the present invention provides a kind of elementary cell of magneto-rheological fluid control with composite damping gap and ginseng
Number Optimal Design Method, the compound clearance magnetorheological fluid damp unit according to the parameter optimization method design being provided can be wide
General apply in fields such as magnetorheological control valve and magnetorheological damping amortisseurs, realize to the pressure drop of magnetic flow liquid and the Gao Xiang of flow
Should, light noise, reliable and stable control.
The technical solution adopted for the present invention to solve the technical problems is as follows：A kind of universal compound clearance magnetorheological damping
Unit, described damping unit includes coiling sleeve, valve element, coil, connecting pin, non-magnetic pad, upper magnetic conduction annulus, lower magnetic conduction circle
Ring, upper magnetic conduction disk, lower magnetic conduction disk, cylinder body；Valve element, coiling sleeve, coil, cylinder body are sequentially coaxially installed from inside to outside；Around
Line sleeve is coaxially mounted to outside valve element, and upper magnetic conduction disk, lower magnetic conduction disk are arranged on the two ends of valve element respectively by connecting pin,
Between upper magnetic conduction disk and valve element, between lower magnetic conduction disk and valve element, all it is lined with non-magnetic pad, form disc fluid course；
Upper magnetic conduction annulus is coaxially mounted to magnetic conduction disk outer portion, lower magnetic conduction annulus is coaxially mounted to lower magnetic conduction disk outer portion, upper magnetic conduction
Between annulus and upper magnetic conduction disk, between lower magnetic conduction annulus and lower magnetic conduction disk, form annular fluid course respectively；Coil around
On coiling sleeve；Upper magnetic conduction disk end and lower magnetic conduction disk end are provided with screw thread；Described center spool is provided with circle
Tubular fluid course, annular fluid course, disc fluid course, cylindrical shape fluid course are sequentially communicated, and are formed complete
Annulus disc cylindrical shape composite damping gap；The side of cylinder body has fairlead, and the wire of coil is drawn from described fairlead；
Cylinder interior arranges shoulder hole, and shoulder hole and upper magnetic conduction annulus form step cooperation；The width t of annular fluid courseaWith cylinder
The scope of the ratio of external surface radius R is 0.02～0.15；The width t of disc fluid courserWith outer surface of cylinder block radius R it
The scope of ratio is 0.02～0.15；Valve element thickness RCScope with the ratio of outer surface of cylinder block radius R is 0.25～0.7；Magnetic conduction is justified
Disc thickness LaScope with upper magnetic conduction annulus upper surface and the ratio of the distance between lower magnetic conduction annulus lower surface L is 0.1～0.4；
Cylinder body thickness thScope with the ratio of outer surface of cylinder block radius R is 0.1～0.4.
Further, described upper magnetic conduction disk, lower magnetic conduction disk are equipped with chamfering in annular fluid course porch.
Further, described coiling sleeve, connecting pin, non-magnetic pad adopt non-magnet material, upper magnetic conduction annulus, under lead
Magnetic annulus, upper magnetic conduction disk, lower magnetic conduction disk, cylinder body are all using having high permeability, the leading of high saturated magnetic induction characteristic
Magnetic material.
Further, this application is：Described damping unit is applied to hydraulic valve and hydraulic damping amortisseur.
A kind of MR valve applying universal compound clearance magnetorheological damping unit, described MR valve includes above-mentioned resistance
Buddhist nun's unit, upper connection ring, lower connection ring, upper end cover, bottom end cover, cylinder body sealing ring, magnetic conduction annulus sealing ring, end cap seal circle；
Upper end cover, bottom end cover are arranged on the two ends of cylinder body, are provided with end cap between upper end cover and cylinder body, bottom end cover and cylinder body
Sealing ring, upper connection ring and lower connection ring are separately mounted to the two ends of described damping unit；Upper magnetic conduction disk and upper connection ring, under
Magnetic conduction disk is all threaded connection with lower connection ring, between upper connection ring and upper magnetic conduction annulus, lower connection ring and lower magnetic conduction circle
It is provided with magnetic conduction annulus sealing ring between ring；Cylinder body and upper connection ring and lower connection ring interference fits, cylinder body and upper connection ring
Between, be provided with cylinder body sealing ring between cylinder body and lower connection ring；
Equally distributed at least one pod apertures, pod apertures and annular fluid course are arranged on upper connection ring, lower connection ring
Communicate；Upper end cover, bottom end cover center are provided with through hole, and through-hole wall is provided with female thread, and conduit under fluid pressure passes through spiral shell with through hole
Stricture of vagina connects, and upper connection ring, lower connection ring, upper end cover, bottom end cover are non-magnet material.
The present invention, compared with technical background, has had the advantage that：
1. the present invention adopts the annulus disc cylindrical shape composite fluid flow passage after parameter optimization.Base in prior art
On plinth, by mathematical modeling, Finite Element Simulation Analysis and majorized function optimization it is determined that suitable dimensionless design parameter, make
Magnetic rheoliquid controlling valve or damping shock absorber are wider to the pressure drop of magnetic flow liquid or the span of control of flow.
2. the present invention increased magnetic conduction annulus on the basis of existing technology, on the one hand makes damping unit version more
Step up to gather, decrease passive damping runner section, make system response time shorter, be conducive to improving the modulability of damping unit
Can, on the other hand can easily pass through to change magnetic conduction disk according to real needs and the size of magnetic conduction annulus changes fluid course
Positions and dimensions, thus reaching optimal effectiveness.
3. the cylinder body of the present invention adopts shoulder hole structure it is ensured that positioning is convenient accurate, plays axially position effect, is easy to fill
Join.
4. the composite can be widely applied to, in hydraulic valve and hydraulic damping amortisseur, improve magnetorheological fluid damp unit
Versatility.By the unit-modularized design of magnetorheological damping, in hydraulic valve and damping shock absorber field, need not redesign, can
Assemble on request with external hydraulic valve module or damping shock absorber module, improve production work efficiency.
5. the present invention adopts the cooperation of permeability magnetic material and non-magnet material with poly- magnetic further, such as connection ring, coiling sleeve,
Connecting pin, pad adopt non-magnet material, and magnetic conduction disk, magnetic conduction annulus, cylinder body, valve element adopt permeability magnetic material it is ensured that magnetic field
It is distributed in as much as possible in fluid course, improve magnetic field utilization rate so that magnetorheological damping cell operation effect is more significantly.
6. the present invention can increase according to demand around magnetic sleeve and magnet exciting coil group number.Often increase by one group, 1 section of annulus will be increased
Shape damping clearance and 2 sections of radial fluid flow gap, the multistage pressure reduction of formation is controlled, increased inlet outlet pressure differential range of accommodation, makes this
The range of application of invention is more wide.
Brief description
Fig. 1 is composite damping gap damping unit structural representation；
Fig. 2 is that the magnetic circuit of composite damping gap element occurs schematic diagram；
Fig. 3 is the magnetic induction line distribution schematic diagram that finite element analyses obtain；
Fig. 4 is the structural representation of the magnetorheological control valve of application example of the present invention；
Fig. 5 is the structural extended schematic diagram of the magnetorheological control valve of application example of the present invention；
Fig. 6 is the application example magnetorheological damping shock absorber structure schematic diagram of the present invention；
Fig. 7 is the physical dimension figure of all parts of damping unit；
Coiling sleeve 1, valve element 2, coil 3, connecting pin 4, non-magnetic pad 5, upper magnetic conduction annulus 6a, lower magnetic conduction annulus 6b,
Upper magnetic conduction disk 7a, lower magnetic conduction disk 7b, annular fluid course 8, disc fluid course 9, cylindrical shape fluid course 10, cylinder
Body 11, upper connection ring 12a, lower connection ring 12b, upper end cover 13a, bottom end cover 13b, cylinder body sealing ring 14, magnetic conduction annulus sealing ring
15th, end cap seal circle 16, piston rod 17, antivibrator cylinder body 18, dynamic seal ring 20, connection end cap 21, piston rod packing circle 22, resistance
Buddhist nun's device cylinder body sealing ring 23, bearing 24 and attenuator end cap sealing ring 25.
Specific embodiment
As described in Figure 1, a kind of universal compound clearance magnetorheological damping unit, described damping unit include coiling sleeve 1,
Valve element 2, coil 3, connecting pin 4, non-magnetic pad 5, upper magnetic conduction annulus 6a, lower magnetic conduction annulus 6b, upper magnetic conduction disk 7a, lower magnetic conduction
Disk 7b, cylinder body 11；Valve element 2, coiling sleeve 1, coil 3, cylinder body 11 are sequentially coaxially installed from inside to outside；Coiling sleeve 1 passes through
Interference fits are coaxially mounted to outside valve element 2, and upper magnetic conduction disk 7a, lower magnetic conduction disk 7b are arranged on valve by connecting pin 4 respectively
The two ends of core 2, between upper magnetic conduction disk 7a and valve element 2, are all lined with non-magnetic pad 5, shape between lower magnetic conduction disk 7b and valve element 2
Become disc fluid course 9, by the size of the Assurance of Size disc fluid course 9 of non-magnetic pad 5；Upper magnetic conduction annulus 6a
It is coaxially mounted to that magnetic conduction disk 7a is outside, lower magnetic conduction annulus 6b is coaxially mounted to outside lower magnetic conduction disk 7b, by hydrodynamics
Understand, damping pressure drop is as follows with flow equation fundamental formular：
As shown from the above formula, in the case that outside is equivalently-sized, the present invention, due to increasing magnetic conduction annulus, decreasesValue, thus decreasing the passive pressure drop Δ P of disc fluid courser,η, that is, reduce the damping of system, in system
The work starting stage, or during high frequency response, substantially increase system response time.Therefore, the technical program and previous patent phase
The magnetic conduction annulus increasing on the basis of annulus-disk composite damping gap is so that the position of annular runner and disc for ratio
The dimensional parameters of runner are more reasonable, while ensureing damping pressure drop performance, make structure compacter, decrease disc liquid
The passive drop portion of circulation road, improves system response time.
Between upper magnetic conduction annulus 6a and upper magnetic conduction disk 7a, formed respectively between lower magnetic conduction annulus 6b and lower magnetic conduction disk 7b
Annular fluid course 8, the width of annular fluid course 8 and disc fluid course 9 can equal also can be unequal, with cylinder body
The scope of the ratio of 11 appearance radius surface R is 0.02～0.15, upper magnetic conduction annulus 6a and upper magnetic conduction disk 7a, lower magnetic conduction annulus 6b
Cooperation with lower magnetic conduction disk 7b determines the position of annular fluid course 8, improves magnetic field utilization rate, increases magnetic field pair
In annular runner, the shearing force of magnetic flow liquid, has given full play to magnetic rheology effect；Coil 3 is wound on coiling sleeve 1, when being passed through
During exciting current, described damping unit produces magnetic field, form magnetic conductive loop so that the magnetic flow liquid in runner produces magnetic current
Change effect, produces pressure drop and reaches damping；Upper magnetic conduction disk 7a end and lower magnetic conduction disk 7b end are provided with external screw thread,
Can directly be threadably secured with external hydraulic valve cell or damper elements and be connected, additionally, upper magnetic conduction disk 7a, lower magnetic conduction circle
Disk 7b is equipped with chamfering in annular fluid course 8 porch, in case fluid stopping road internal drop mutation, it is to avoid turbulent flow；Described valve element 2
Be provided centrally with cylindrical shape fluid course 10, annular fluid course 8, disc fluid course 9, cylindrical shape fluid course 10 according to
Secondary connection, forms complete annulus disc cylindrical shape composite damping gap；The side of cylinder body 11 has fairlead, coil 3
Wire is drawn from described fairlead；The internal setting shoulder hole of cylinder body 11, shoulder hole and upper magnetic conduction annulus 6a form step cooperation, protect
Card positioning is convenient accurate, plays axially position effect, is easy to assemble；The physical dimension of described unit is as shown in fig. 7, annular liquor stream
The width t of passageaScope with the ratio of cylinder body 11 appearance radius surface R is 0.02～0.15；The width t of disc fluid courserWith
The scope of the ratio of cylinder body 11 appearance radius surface R is 0.02～0.15；Valve element thickness RCModel with the ratio of cylinder body 11 appearance radius surface R
Enclose for 0.25～0.7；Magnetic conduction disc thickness LaAnd upper magnetic conduction annulus 6a upper surface and lower magnetic conduction annulus 6b lower surface between away from
It is 0.1～0.4 from the scope of the ratio of L；Cylinder body thickness thScope with the ratio of cylinder body 11 appearance radius surface R is 0.1～0.4.Root
According to the requirement of applications environment and performance requirement or constraint, carry out the excellent of limited performance and structure in above-mentioned size range
Change design, the performance indications after the optimal design parameter of output magnetorheological damping unit and optimization, referred to as parameter sensitivity is write music
Line, determines each physical dimension tool of magnetorheological optimum cell on Parameter sensitivity curve according to applied environment and performance requirement
Body value.Therefore, compared with previous patent, described damping unit limits lower quantitative analyses by meeting application demand and environmental applications
The impact of the performances such as physical dimension relative damping pressure drop, optimizes physical dimension, has reached compact conformation, reliability height, response
Hurry up, the optimized actual effect of damping capacity.
There is figure and magnetic induction line scattergram in the magnetic circuit of Fig. 2 and Fig. 3, the respectively present invention.Closing as shown in Figure 2 is empty
Line, through valve element 2, disc fluid course 9, upper magnetic conduction disk 7a, lower magnetic conduction disk 7b, annular fluid course 8, upper magnetic conduction
Annulus 6a, lower magnetic conduction annulus 6b and cylinder body 11.Wherein, valve element 2, upper magnetic conduction annulus 6a, lower magnetic conduction annulus 6b, upper magnetic conduction disk
7a, lower magnetic conduction disk 7b, cylinder body 11 are all using permeability magnetic material.And connecting pin 4, pad 5, coiling sleeve 1 adopt non-magnet material
Poly- magnetic, it is ensured that magnetic line of force direction and fluid course are mutually perpendicular to, make the magnetic field intensity in compound clearance reach maximum, fills further
Magnetic rheology effect is waved in distribution.Through Finite Element Simulation Analysis, using the present invention program magnetic induction line distribution as shown in figure 3, magnetic induction line
It is all orthogonal with runner at annular fluid course and at dish type fluid course.
As shown in figure 4, a kind of MR valve applying universal compound clearance magnetorheological damping unit, described MR valve
Including above-mentioned damping unit, upper connection ring 12a, lower connection ring 12b, upper end cover 13a, bottom end cover 13b, cylinder body sealing ring 14, lead
Magnetic annulus sealing ring 15, end cap seal circle 16；Upper end cover 13a, bottom end cover 13b are threaded connection and are arranged on the two of cylinder body 11
End, and axially position is ensured accurately by the step contact of setting, it is easy to assemble.Upper end cover 13a and cylinder body 11, bottom end cover 13b
It is provided with end cap seal circle 16 and cylinder body 11 between, upper connection ring 12a and lower connection ring 12b are separately mounted to described damping list
The two ends of unit；Upper magnetic conduction disk 7a is all threaded connection with lower connection ring 12b with upper connection ring 12a, lower magnetic conduction disk 7b, and
It is connected by connecting pin 4 with valve element 2.Between upper connection ring 12a and upper magnetic conduction annulus 6a, lower connection ring 12b and lower magnetic conduction annulus
It is provided with magnetic conduction annulus sealing ring 15 between 6b；Cylinder body 11 and upper connection ring 12a and lower connection ring 12b interference fits, cylinder body
Between 11 and upper connection ring 12a, between cylinder body 11 and lower connection ring 12b, it is respectively provided with cylinder body sealing ring 14；Upper connection ring 12a, under
Connection ring 12b is respectively evenly arranged with pod apertures, and pod apertures are communicated with annular fluid course 8, and during work, magnetic flow liquid is from end cap
Porch flows in damp channel through pod apertures；Upper end cover 13a, bottom end cover 13b center are provided with through hole, and through-hole wall is arranged
Have female thread, be threaded connection with the pipe joint in conduit under fluid pressure, upper connection ring 12a, lower connection ring 12b, upper end cover 13a,
Bottom end cover 13b, it is non-magnet material, and the cooperation of described damping unit, poly- magnetic further, so that magnetic conductive loop is produced and setting
In route.The side of cylinder body 11 has fairlead, and the wire of coil 3 is drawn from described fairlead, and uses sealant sealing.
During use, magnetic flow liquid enters MR valve from A mouth, enters by leading through equally distributed pod apertures in lower connection ring
Magnetic disk and the annular fluid course of magnetic conduction annulus formation, enter back into the disc liquor stream being formed by magnetic conduction disk and valve element and lead to
Road, flows into the centre bore of valve element, then flows into the valve element other end corresponding composite fluid flow passage by centre bore.This valve arrangement is non-right
Claim structure, but have bidirectional control valve function, thus it is possible to vary the direction flowing in and out, do not affect working effect.When damping is single
When first coil is not loaded with electric current, magnetic flow liquid flowing wherein is laminar flow, and fluid is Newtonian fluid, and the pressure drop now producing is
Null field pressure drop, also referred to as passive damping pressure drop.When coil loading current, annular and radial fluid flow gap are all by magnetic field
Control, the magnetic flow liquid in damping flow channel is changed into Bingham fluid in very short time, produce pressure drop, reach flow and pressure drop
Control.The damping pressure drop that this valve provides is made up of passive damping and active damping two parts.Cylindrical shape fluid course is not subject to substantially
Magnetic field affects, and mainly provides passive damping.
Fig. 5 shows one kind two loop construction expanded application example of above-mentioned MR valve, and the MR valve of this extension is same
When there are two magnet exciting coils, constitute three groups 9 effective magnetorheological damping gaps, formation two-stage pressure-regulating is so that MR valve enters
Outlet pressure reduction range of accommodation is wider, controls more flexible.The magnetic flow liquid pressure control valve of this structural extended increased 1 magnetic conduction circle
Ring, 1 magnetic conduction disk, 1 valve element, 1 group around magnetic sleeve and magnet exciting coil.Form circle between magnetic conduction disk 7a and magnetic conduction annulus 6a
Annular fluid course 8a, forms disc fluid course 9a, magnetic conduction disk 7a and valve element 2a between magnetic conduction disk 7a and valve element 2a
Between ensure the size of disc fluid course 9a, valve element 2a intermediate formation cylindrical flow channel 10a by not magnetic conduction pad.Similar
Ground, can get remaining 6 sections of damping clearance.Furthermore, it is possible to according to use demand, increase magnetic conduction disk, the number of magnetic conduction annulus.Often
Increase by one group, 1 section of annular fluid flow gap and 2 sections of radial fluid flow gap will be increased.
Fig. 6 shows a kind of present invention application example magnetorheological damping amortisseur.In addition to damping unit part, also wrap
Include piston rod 17, antivibrator cylinder body 18, dynamic seal ring 20, connection end cap 21, piston rod packing circle 22, antivibrator cylinder body sealing ring
23rd, bearing 24 and attenuator end cap sealing ring 25.For the ease of installing, cylinder body 11 lower end arranges female thread, and outer step is tied
Structure is changed to concave inward structure and is coordinated with dynamic seal ring.Connection end cap 21, piston rod 17, attenuator end cap sealing ring 25, piston rod are close
Seal 22, damping unit composition damping shock absorber piston.Connect end cap 21 and be arranged on the lower end of cylinder body 11, connect end cap 21 with
It is provided with attenuator end cap sealing ring 25 between magnetic conduction annulus 6b；Piston rod 17 is arranged on the upper end of cylinder body 11, piston rod 17 with
It is provided with piston rod packing circle 22 between cylinder body 11；Piston rod 17 is connected by screw thread with the upper magnetic conduction disk 7a in damping unit
Connect, and there is coaxial center through hole.Piston rod 17 passes through antivibrator cylinder body sealing ring 23 and the bearing of antivibrator cylinder body 18 upper end
24 stretch out from cylinder body upper end, are filled with magnetic flow liquid in antivibrator cylinder body 18.Cylinder body 11 is connected by screw thread with being connected end cap 21
Connect, coordinated by precise transition with piston rod 17 and sealed with piston rod packing circle 22, cylinder body 11 external diameter is less than antivibrator cylinder body
18 internal diameters simultaneously leave certain interval, by dynamic seal ring 20 slipper seal.
Antivibrator cylinder body 18, piston rod 17 is made up of non-magnet material with being connected end cap 21, with poly- magnetic further so that by
The magnetic circuit that coil produces passes through in the path setting.Arrange an aperture in valve element axial direction middle to connect with center spool hole,
Wire is drawn from centre bore, then is sealed hole D using fluid sealant, is immersed in the part wire insulant bag in magnetic flow liquid
Wrap up in, with piston rod centre bore F, wire is drawn by magnetic conduction disc centre hole E, be connected with external control deviceses.
Claims (5)
1. a kind of universal compound clearance magnetorheological damping unit it is characterised in that：Described damping unit includes coiling sleeve
（1）, valve element（2）, coil（3）, connecting pin（4）, non-magnetic pad（5）, upper magnetic conduction annulus（6a）, lower magnetic conduction annulus（6b）, on
Magnetic conduction disk（7a）, lower magnetic conduction disk（7b）, cylinder body（11）；Valve element（2）, coiling sleeve（1）, coil（3）, cylinder body（11）By interior
Outwards sequentially coaxially install；Coiling sleeve（1）It is coaxially mounted to valve element（2）Outside；Upper magnetic conduction disk（7a）, lower magnetic conduction disk
（7b）Pass through connecting pin respectively（4）It is arranged on valve element（2）Two ends, upper magnetic conduction disk（7a）With valve element（2）Between, lower magnetic conduction circle
Disk（7b）With valve element（2）Between be all lined with non-magnetic pad（5）, form disc fluid course（9）；Upper magnetic conduction annulus（6a）With
Axle is arranged on magnetic conduction disk（7a）Outside, lower magnetic conduction annulus（6b）It is coaxially mounted to lower magnetic conduction disk（7b）Outside, upper magnetic conduction
Annulus（6a）With upper magnetic conduction disk（7a）Between, lower magnetic conduction annulus（6b）With lower magnetic conduction disk（7b）Between form annular respectively
Fluid course（8）；Coil（3）It is wound on coiling sleeve（1）On；Upper magnetic conduction disk（7a）End and lower magnetic conduction disk（7b）End is equal
It is provided with screw thread；Described valve element（2）It is provided centrally with cylindrical shape fluid course（10）, annular fluid course（8）, disc liquid
Circulation road（9）, cylindrical shape fluid course（10）It is sequentially communicated, form complete annulus-disk-cylindrical shape composite damping gap；
Cylinder body（11）Side have fairlead, coil（3）Wire draw from described fairlead；Cylinder body（11）Internal setting ladder
Hole, shoulder hole and upper magnetic conduction annulus（6a）Form step cooperation；The width of annular fluid course and cylinder body（11）Outer surface half
The scope of the ratio of footpath R is 0.02 ~ 0.15；The width of disc fluid course and cylinder body（11）The scope of the ratio of appearance radius surface R
For 0.02 ~ 0.15；Valve element thickness and cylinder body（11）The scope of the ratio of appearance radius surface R is 0.25 ~ 0.7；Magnetic conduction disc thickness with
Upper magnetic conduction annulus（6a）Upper surface and lower magnetic conduction annulus（6b）The scope of the ratio of the distance between lower surface L is 0.1 ~ 0.4；Cylinder body
Thickness and cylinder body（11）The scope of the ratio of appearance radius surface R is 0.1 ~ 0.4.
2. damping unit according to claim 1 is it is characterised in that described upper magnetic conduction disk（7a）, lower magnetic conduction disk
（7b）In annular fluid course（8）Porch is equipped with chamfering.
3. damping unit according to claim 1 is it is characterised in that described coiling sleeve（1）, connecting pin（4）, non-magnetic
Pad（5）Using non-magnet material, upper magnetic conduction annulus（6a）, lower magnetic conduction annulus（6b）, upper magnetic conduction disk（7a）, lower magnetic conduction disk
（7b）, cylinder body（11）All using permeability magnetic material.
4. a kind of application of the damping unit described in claim 1 is it is characterised in that this application is：Should by described damping unit
For hydraulic valve and hydraulic damping amortisseur.
5. a kind of MR valve applying universal compound clearance magnetorheological damping unit is it is characterised in that described MR valve
Including the damping unit described in claim 1, upper connection ring（12a）, lower connection ring（12b）, upper end cover（13a）, bottom end cover
（13b）, cylinder body sealing ring（14）, magnetic conduction annulus sealing ring（15）, end cap seal circle（16）；
Upper end cover（13a）, bottom end cover（13b）It is arranged on cylinder body（11）Two ends, upper end cover（13a）With cylinder body（11）, bottom end cover
（13b）With cylinder body（11）Between be provided with end cap seal circle（16）, upper connection ring（12a）With lower connection ring（12b）It is respectively mounted
Two ends in described damping unit；Upper magnetic conduction disk（7a）With upper connection ring（12a）, lower magnetic conduction disk（7b）With lower connection ring
（12b）All it is threaded connection, upper connection ring（12a）With upper magnetic conduction annulus（6a）Between, lower connection ring（12b）With lower magnetic conduction circle
Ring（6b）Between be provided with magnetic conduction annulus sealing ring（15）；Cylinder body（11）With upper connection ring（12a）With lower connection ring（12b）Cross
Cross cooperation, cylinder body（11）With upper connection ring（12a）Between, cylinder body（11）With lower connection ring（12b）Between be provided with cylinder body sealing
Circle（14）；
Upper connection ring（12a）, lower connection ring（12b）On be provided with equally distributed at least one pod apertures, pod apertures and annular
Fluid course（8）Communicate；Upper end cover（13a）, bottom end cover（13b）Center is provided with through hole, and through-hole wall is provided with female thread,
Conduit under fluid pressure is threaded connection with through hole, upper connection ring（12a）, lower connection ring（12b）, upper end cover（13a）, bottom end cover
（13b）It is non-magnet material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510140333.9A CN104847830B (en) | 2015-03-27 | 2015-03-27 | A kind of universal compound clearance magnetorheological damping unit and MR valve |
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| CN201510140333.9A CN104847830B (en) | 2015-03-27 | 2015-03-27 | A kind of universal compound clearance magnetorheological damping unit and MR valve |
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| CN104847830B true CN104847830B (en) | 2017-03-01 |
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| CN105280327A (en) * | 2015-11-18 | 2016-01-27 | 中国计量科学研究院 | Solenoid |
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| US6874603B2 (en) * | 2003-01-09 | 2005-04-05 | Delphi Technologies, Inc. | Magnetorheological piston and damper assembly |
| CN1276192C (en) * | 2003-01-27 | 2006-09-20 | 邱玲 | Method and apparatus for circulating magnetic rheid non-linearly in magnetic gap space |
| CN1314903C (en) * | 2004-05-28 | 2007-05-09 | 重庆大学 | Magnetic flow liquid variable controllnig valve with two liquid flow resistance channels |
| CN102121509B (en) * | 2010-12-09 | 2013-01-23 | 重庆大学 | Magnetorheological damper with annular and disc-shaped liquid flow resistance channels simultaneously |
| CN102913587B (en) * | 2012-10-25 | 2014-06-18 | 中国民航大学 | Magneto-rheological damper |
| CN203098446U (en) * | 2013-03-18 | 2013-07-31 | 华东交通大学 | Radial flow-type single-coil magneto-rheological valve |
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