CN110259873A - Mixed mode magnetic rheological isolator - Google Patents
Mixed mode magnetic rheological isolator Download PDFInfo
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- CN110259873A CN110259873A CN201910579017.XA CN201910579017A CN110259873A CN 110259873 A CN110259873 A CN 110259873A CN 201910579017 A CN201910579017 A CN 201910579017A CN 110259873 A CN110259873 A CN 110259873A
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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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- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Combined Devices Of Dampers And Springs (AREA)
- Vibration Prevention Devices (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The present invention relates to a kind of mixed mode magnetic rheological isolators, including the lower case fastened by upper housing and the upper housing and are set to the upper housing and the intracorporal damper assembly of lower casing；The damper assembly includes interior damper assembly and external damping component；The interior damper assembly includes squeezing magnetic core, spaced radial and being coated to squeeze the inner magnetic core ring of magnetic core, be placed in the upper magnetic sheet squeezed on magnetic core and be placed in the magnetic conduction disk and lower magnetic sheet squeezed under magnetic core；Radial upper squeezed air-damping channel is formed between extruding magnetic core and the upper magnetic sheet, radial lower squeezed air-damping channel, the upper squeezed air-damping channel and lower squeezed air-damping channel is formed between extruding magnetic core and the magnetic conduction disk to be connected to by squeezing magnetic core with the gap of inner magnetic core interannular；The week radial damp channel for being connected to down squeezed air-damping channel is formed between the magnetic conduction disk and lower magnetic sheet, is provided with elastic counterdie in the lower case；Conducive to realizing active vibration isolation in more wide frequency ranges and meet the vibration isolation demand of vehicle under different operating conditions.
Description
Technical field
The present invention relates to a kind of magnetic rheological isolator more particularly to a kind of mixed mode magnetic rheological isolators.
Background technique
Magnetorheological fluid is intellectual material that is a kind of while having magnetic material magnetic conductivity and fluid mobility, in magnetic fields
Under, magnetorheological fluid can be changed into semisolid from the liquid of free-flowing in moment (Millisecond), controllable yield strength is showed,
This rheological behavior is continuous with magnetic field, stepless variation, and changes reversible.Magnetic rheological isolator is exactly the rheology using magnetorheological fluid
Characteristic, by control magnet exciting coil in electric current change magnetic field strength come change magnetic rheological isolator output damping force and just
Degree, so that the vibration of vehicle engine assembly be isolated.
Existing vehicle isolation system magnetic rheological isolator is generally by shell, rubber spring, magnetic core, rubber counterdies and sealing
Part is constituted, and there are following deficiencies for existing vehicle magnetic rheological isolator:
1) traditional magnetic rheological isolator is mostly the single-modes such as flowing or extruding, flow pattern have preferable controllability but
Its output damping force is smaller, and squeeze mode can provide biggish damping force but controllability is poor, limit vibrating isolation system
Vibration isolating effect；
2) existing multi-mode magnetic rheological isolator, which is generally different working modes and corresponds to multiple magnet exciting coils, respectively drives, and makes
Degree that its structure is complicated is got higher, occupied space becomes larger；
3) existing magnetic rheological isolator isolation frequency range and the dynamic stiffness of suspension are limited, are not able to satisfy automobile power assembly
Requirement under various operating conditions.
Based on problem above, the present invention provides a kind of mixed mode magnetic rheological isolator.The syntype magnetic rheological isolator
Under the premise of not changing the external dimensions of original isolation mounting, it can be realized by one group of magnet exciting coil to squeezed air-damping channel and week
Controlled while magnetic induction intensity at radial damp channel, conducive to larger damping force is provided under low energy consumption, improve it is magnetorheological every
The vibration isolation range of vibration device；The output damping force for changing magnetic rheological isolator by another group of magnet exciting coil exciting current, is conducive to
Active vibration isolation is realized in more wide frequency ranges and meets the vibration isolation demand of vehicle under different operating conditions；And it is compact-sized.
Summary of the invention
In view of this, the present invention provides a kind of mixed mode magnetic rheological isolators to overcome defect in the prior art
Under the premise of not changing the external dimensions of original isolation mounting, it can be realized by one group of magnet exciting coil to squeezed air-damping channel and week
Controlled while magnetic induction intensity at radial damp channel, conducive to larger damping force is provided under low energy consumption, improve it is magnetorheological every
The vibration isolation range of vibration device；The output damping force for changing magnetic rheological isolator by another group of magnet exciting coil exciting current, is conducive to
Active vibration isolation is realized in more wide frequency ranges and meets the vibration isolation demand of vehicle under different operating conditions；And it is compact-sized.
Mixed mode magnetic rheological isolator of the invention, including by upper housing, with the upper housing fasten lower case and
It is set to the upper housing and the intracorporal damper assembly of lower casing；The upper housing and the buckling surface of lower case are provided with sealing ring,
For the sealing to upper housing and lower case junction；The upper housing and the lower case are internal after fastening to form cavity；Institute
It states upper housing and being fastened and connected for lower case belongs to the prior art, be such as bolted, details are not described herein；The upper housing
Material selection with lower case belongs to the prior art, such as every magnetic aluminum alloy materials, repeats no more；
The damper assembly includes interior damper assembly and external damping component；The interior damper assembly includes squeezing magnetic core, diameter
It is coated to interval and squeezes the inner magnetic core ring of magnetic core, be placed in the upper magnetic sheet squeezed on magnetic core and be placed in the magnetic conduction circle squeezed under magnetic core
Disk and lower magnetic sheet；The upper magnetic sheet is set to the upper end of inner magnetic core ring, conducive to the fixation to inner magnetic core ring；The extruding magnetic core is set
It is equipped with magnet exciting coil, i.e. magnet exciting coil I；Radial direction herein refers to the radial direction of the lower case 1 of barrel-like structure；The extruding magnetic core with
Radial upper squeezed air-damping channel is formed between upper magnetic sheet, forms radial lower squeezed air-damping between extruding magnetic core and the magnetic conduction disk
Channel, the upper squeezed air-damping channel and lower squeezed air-damping channel are connected to by squeezing magnetic core with the gap of inner magnetic core interannular；Institute
It states and forms the week radial damp channel for being connected to down squeezed air-damping channel between magnetic conduction disk and lower magnetic sheet, the week radial damp channel
By being connected to every axially extending bore corresponding on magnetic pedestal；The magnetic conduction disk is coated at the radial outside of the boss of lower magnetic sheet；It is logical
Control of the overexcitation coil I to magnetic induction intensity at upper squeezed air-damping channel, lower squeezed air-damping channel and all radial damp channels,
Conducive to providing biggish damping force under low energy consumption and expand the vibration isolation range of magnetic rheological isolator；Radial direction herein refers to magnetic conduction
The radial direction of disk；Elastic counterdie is provided in the lower case；The elasticity counterdie is located at below magnetic pedestal and under being fixed on
On the inner sidewall of shell, the upper space of the elasticity counterdie is full of magnetorheological fluid；The material selection of the elasticity counterdie belongs to
The prior art, the rubber that such as elasticity is good, at low cost, details are not described herein；Conducive to magnetorheological fluid in elastic counterdie upper space
Damping buffering, more conducively vibration damping；The extruding magnetic core is fixed on the connecting rod across upper housing, is used for and engine corresponding component
Connection；Conducive to connection vibrating member and conducive to the vibration damping to vibrating member.
Further, the external damping component include be set to inner magnetic core ring radial outside tapered inner magnetic core and with it is tapered interior
The tapered outer magnetic core of the radial tapered adaptation of magnetic core；It is logical that inclined axial damping is formed between the tapered inner magnetic core and tapered outer magnetic core
Road；The axial direction damp channel every axially extending bore corresponding on magnetic pedestal by being connected to；The tapered outer radial tapered position of magnetic core
In the radial outside of tapered inner magnetic core, the radial tapered radially inner side positioned at tapered outer magnetic core of tapered inner magnetic core is described tapered interior
The radial tapered form-fit of magnetic core and tapered outer magnetic core, conducive to the formation of the axial damp channel with tilt angle；It is described
Tapered inner magnetic core is provided with magnet exciting coil, i.e. magnet exciting coil II, has the constant-current source different from magnet exciting coil I；It is described tapered interior
Forming inclined axial damp channel between magnetic core and tapered outer magnetic core, the axial direction damp channel and axial angle be 5 °-
15 °, preferably 10 °；The axial direction refers to that the lower case 1 of barrel-like structure is axial；To when magnet exciting coil I meets vibration isolation demand, encourage
The input of magnetic coil II no current, axial damp channel with angle, which serves as inertia channel, alleviates magnetorheological fluid dynamic hardening phenomenon,
When magnet exciting coil I is not able to satisfy vibration isolation demand, by applying electric current input to magnet exciting coil II, conducive to the defeated of vibration isolator is increased
Damping force out widens isolation frequency range, to meet the vibration isolation demand of vehicle under different operating conditions；The damper assembly sends out this
The inner cavity of bright magnetic rheological isolator is divided into two and forms the upper and lower cavities of connection；
Further, the tapered outer magnetic core is provided with radial lead channel；The wire channel is located at the side of lower case 1
Side, the wire channel corresponding to tapered outer magnetic core are arranged, incude conducive to at the axial damp channel with tilt angle
The control of electric current；The taper inner magnetic core is fixed on every on magnetic pedestal, and the tapered outer magnetic core is fixed on upper housing and lower case
Side wall on, be such as fixedly connected by screw, details are not described herein；The lower case corresponds to and is provided with spiral shell at the wire channel
Pit, the threaded hole are built-in with sealing ring and the sealing element with through-hole；Conducive to the sealing to wire channel, the sealing element
Selection belong to the prior art, such as sealing screw, details are not described herein；
Further, further include for every magnetic every magnetic assembly；It is described every magnetic assembly include be set to upper magnetic sheet top upper
Magnetism-isolating loop III, inner magnetic core ring between magnetism-isolating loop I, upper magnetic sheet and tapered inner magnetic core and the magnetic shield cylinder between tapered inner magnetic core and cone
The upper magnetism-isolating loop II on the outer magnetic core top of type；The upper magnetism-isolating loop I, upper magnetic sheet and magnetism-isolating loop III are fixed on the top of tapered inner magnetic core
End；The upper magnetism-isolating loop I, upper magnetic sheet and being fixedly connected for magnetism-isolating loop III belong to the prior art, are such as connected by screw to, herein
It repeats no more；
Further, axially opposing step surface is provided on the inside of the upper housing and lower case；Axial direction herein refers to bucket
The axial direction of the lower case of shape structure；The upper magnetism-isolating loop II, tapered outer magnetic core and cooperation is corresponding in turn to every magnetic pedestal is fixed on institute
It states between axially opposing step surface；Conducive to formation to the upper magnetism-isolating loop II on tapered outer magnetic core top and the supporting every magnetic pedestal of bottom end
Firmly；The radial outside every magnetic pedestal is provided with the ladder platform for being fixed on elastic counterdie on lower case step surface；Institute
The space for being formed and being accommodated with fixed elastic counterdie between magnetic pedestal bottom end and the step surface of lower case is stated, is conducive to by every magnetic pedestal
Fixation of the step surface of setting to elastic counterdie；Conducive to the robust seal to the lower semi-cavity full of magnetorheological fluid；
Further, the lower magnetic sheet be fixed on every on magnetic pedestal and shaft core position to be nearby provided with the inertia that is axially connected to logical
Road is conducive to alleviate magnetorheological fluid dynamic hardening phenomenon；The inertia channel top, which is provided with, to be fixed in the groove of lower magnetic sheet top
Decoupling film；The setting of decoupling film is conducive to that the magnetorheological fluid in lower squeezing passage occurs effectively to be delayed when dynamic is hardened
Solution, conducive to the isolation frequency range for widening suspension；It is described that the through-hole being connected to the inertia channel is correspondingly arranged on every magnetic pedestal；
The lower magnetic sheet is fixed on by fastener every on magnetic pedestal, conducive to the stability for improving structure, the selection category of the fastener
In the prior art, cylinder holding screw of such as slotting, details are not described herein；
Further, it is provided in the week radial damp channel multiple for adjusting all radial damp channel gap widths
Thimble；The setting of the thimble is conducive to realize the adjusting to vibration isolator output damping force；
Further, it is provided with the elastic sealing element for blocking upper housing at the top of the upper housing, is generated for vibrating
When pass through the damping change of the magnetorheological fluid being full of between elastic sealing element and elastic counterdie and realize vibration damping；The elastic sealing element and
The setting of elastic counterdie is conducive to the alleviation of the dynamic hardening phenomenon of magnetorheological fluid；The material selection of the elastic sealing element belongs to existing
There is technology, the rubber that such as elasticity is good, at low cost, the connection of the elastic sealing element and upper housing belongs to the prior art, such as vulcanizes,
Details are not described herein；The connecting rod is connect after passing axially through the elastic sealing element with the corresponding component of engine；
Further, the connecting rod is fixed on by studs and is squeezed on magnetic core；It is arranged between the studs and connecting rod
Thanks for your hospitality flow table；Conducive to dynamic stiffness when being effectively reduced vibration isolator high-frequency vibration；Edge in the extruding magnetic core, studs and connecting rod
Axially it is provided with wire channel；The axial wire channel being arranged in magnetic core, studs and connecting rod that squeezes is interconnected；
Conducive to faradic control at upper squeezed air-damping channel, lower squeezed air-damping channel and all radial damp channels；The conducting wire
Sealing ring is provided in channel, conducive to the sealing and protection of wire channel；
Further, the reinforcement block for connecting rod axially position is provided on the elastic sealing element；It is set on the reinforcement block
It is equipped with liquid injection hole and gas vent；The liquid injection hole and gas vent include through the threaded hole of reinforcement block and positioned at elastic sealing element
The threaded hole of interior unthreaded hole, the liquid injection hole is connected to unthreaded hole, and the threaded hole of the gas vent is connected to unthreaded hole；The liquid injection hole
It is sealed with gas vent by sealing ring and sealing element；The sealing element such as slotted countersunk flat head screw, details are not described herein；It is described
Connecting rod top is provided with the external screw thread for connecting engine corresponding component, and the connecting rod bottom end, which is provided with, to be used for and studs
The screw hole of mating connection；Conducive to power transmitting, conducive to the connection of connecting rod and studs.
Mixed mode magnetic rheological isolator working principle of the invention is: mixing when vehicle engine assembly is driven by connecting rod
When mode magnetic rheological isolator vibrates, damping force increases with the increase of exciting current in magnet exciting coil；By controlling by difference
Constant-current source controls the exciting current in magnet exciting coil I and magnet exciting coil II, and the output damping force and output resistance of vibration isolator is adjusted
The adjustable extent of Buddhist nun's power；Wherein magnet exciting coil I passes through logical to upper squeezed air-damping channel, lower squeezed air-damping channel and week radial damping
The control of magnetic induction intensity at road can provide biggish damping force under low energy consumption and expand the vibration isolation model of magnetic rheological isolator
It encloses；When magnet exciting coil I is not able to satisfy vibration isolation demand, apply electric current input to magnet exciting coil II, and by with inclination angle
The output damping force of vibration isolator is adjusted in the control of magnetic induction intensity at the axial damp channel of degree, adjusts isolation frequency range,
To meet the vibration isolation demand of vehicle under different operating conditions.
The beneficial effects of the present invention are: mixed mode magnetic rheological isolator of the invention is realized by magnet exciting coil I to crowded
It is controlled while magnetic induction intensity at pressure damp channel and all radial damp channels, conducive to larger damping is provided under low energy consumption
Power improves the vibration isolation range of magnetic rheological isolator；It can be achieved by adjusting the size of thimble to all radial damp channels
The adjusting of gap width, conducive to the vibration isolation demand for meeting different automobile power assemblies；Decoupling film benefit in the groove of lower magnetic sheet top
Effectively alleviated in dynamic hardening occurs to the magnetorheological fluid in lower squeezing passage, conducive to the isolation frequency model for widening suspension
It encloses；For mixed mode magnetic rheological isolator of the invention when magnet exciting coil I meets vibration isolation demand, magnet exciting coil II no current is defeated
Enter, axial damp channel with angle, which serves as inertia channel, alleviates magnetorheological fluid dynamic hardening phenomenon, when magnet exciting coil I cannot expire
When sufficient vibration isolation demand, applies electric current input to magnet exciting coil II and widen isolation frequency conducive to the output damping force for increasing vibration isolator
Range meets the vibration isolation demand of vehicle under different operating conditions；And it is compact-sized.
Detailed description of the invention
The invention will be further described with reference to the accompanying drawings and examples:
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is magnetic circuit schematic diagram of the invention.
Fig. 3 is lower magnetic pole structures schematic diagram of the invention.
Fig. 4 is of the invention every magnetic schematic diagram of base structure.
Specific embodiment
The present invention is described, the upper and lower orientation in figure is in the de-scription when progress orientation is described with orientation shown in Fig. 1
It is also upper and lower；The description in the upper and lower orientation should not be taken as limiting the invention.
Fig. 1 is the structural diagram of the present invention, and Fig. 2 is magnetic circuit schematic diagram of the invention, and Fig. 3 is lower magnetic sheet knot of the invention
Structure schematic diagram, Fig. 4 be it is of the invention every magnetic bottom structure seat schematic diagram, as shown, the present embodiment magnetic rheological isolator: including by
Upper housing 9, the lower case 1 fastened with the upper housing 9 and the damper assembly being set in the upper housing 9 and lower case 1；Institute
The buckling surface for stating upper housing 9 and lower case 1 is provided with sealing ring 5, for the sealing to 1 junction of upper housing 9 and lower case；Institute
Inside forms cavity after stating upper housing 9 and the lower case 1 fastening；The upper housing 9 and being fastened and connected for lower case 1 belong to now
There is technology, is such as connected by bolt 4, details are not described herein；The selection of the material of the upper housing 9 and lower case 1 belongs to existing skill
Art repeats no more such as every magnetic aluminum alloy materials；
The damper assembly includes interior damper assembly and external damping component；The interior damper assembly include squeeze magnetic core 29,
Spaced radial is coated at and squeezes the inner magnetic core ring 30 of magnetic core 29, is placed in the upper magnetic sheet 28 squeezed on magnetic core 29 and is placed in extruding magnetic core
Magnetic conduction disk 31 and lower magnetic sheet 32 under 29；The upper magnetic sheet 28 is set to the upper end of inner magnetic core ring 20, is conducive to inner magnetic core ring
30 fixation；The extruding magnetic core 29 is provided with magnet exciting coil, i.e. magnet exciting coil I21；Radial direction herein refers to barrel-like structure
The radial direction of lower case 1；Radial upper squeezed air-damping channel, the extruding magnetic core are formed between extruding magnetic core 29 and the upper magnetic sheet 28
Radial lower squeezed air-damping channel is formed between 29 and magnetic conduction disk 31, the upper squeezed air-damping channel and lower squeezed air-damping channel are logical
Extruding magnetic core 29 is crossed to be connected to the gap between inner magnetic core ring 30；It is formed between the magnetic conduction disk 31 and lower magnetic sheet 32 and is connected to down extruding
The week radial direction damp channel of damp channel, the week radial damp channel passes through to be connected to every axially extending bore corresponding on magnetic pedestal 3；
The magnetic conduction disk 31 is coated at the radial outside of the boss of lower magnetic sheet 32；By magnet exciting coil I21 to upper squeezed air-damping channel,
The control of magnetic induction intensity at lower squeezed air-damping channel and all radial damp channels, conducive to biggish damping is provided under low energy consumption
Power and the vibration isolation range for expanding magnetic rheological isolator；Radial direction herein refers to the radial direction of magnetic conduction disk 31；It is set in the lower case 1
It is equipped with elastic counterdie 2；The elasticity counterdie 2 is located at every 3 lower section of magnetic pedestal and is fixed on the inner sidewall of lower case 1, the bullet
Property counterdie 2 upper space be full of magnetorheological fluid；It is described elasticity counterdie 2 material selection belong to the prior art, such as elasticity is good, at
This low rubber, details are not described herein；Conducive to the damping buffering to magnetorheological fluid in elastic counterdie upper space, it is more conducive to subtract
Vibration；The extruding magnetic core 29 is fixed on the connecting rod 13 across upper housing 9, for connecting with engine corresponding component；Conducive to connection
Vibrating member and conducive to the vibration damping to vibrating member.
In the present embodiment, the external damping component include be set to 30 radial outside of inner magnetic core ring tapered inner magnetic core 27 and
With the radial tapered tapered outer magnetic core 26 being adapted to of tapered inner magnetic core 27；It is formed between the tapered inner magnetic core 27 and tapered outer magnetic core 26
Inclined axial direction damp channel；The axial direction damp channel every axially extending bore corresponding on magnetic pedestal 3 by being connected to；It is described tapered
The radial tapered radial outside positioned at tapered inner magnetic core 26 of outer magnetic core 27, tapered inner magnetic core 27 is radial tapered to be located at tapered outer magnetic core
26 radially inner side, the radial tapered form-fit of the tapered inner magnetic core 27 and tapered outer magnetic core 26 are conducive to have inclination angle
The formation of the axial damp channel of degree；The tapered inner magnetic core 27 is provided with magnet exciting coil, i.e. magnet exciting coil II6, has difference
In the constant-current source of magnet exciting coil I21；Inclined axial damp channel is formed between the tapered inner magnetic core 27 and tapered outer magnetic core 26,
The axial direction damp channel and axial angle are 5 ° -15 °, preferably 10 °；The axial direction refers to 1 axis of lower case of barrel-like structure
To；To when magnet exciting coil I21 meets vibration isolation demand, magnet exciting coil II6 no current input, axial damp channel with angle fills
When inertia channel alleviates magnetorheological fluid dynamic hardening phenomenon, when magnet exciting coil I21 is not able to satisfy vibration isolation demand, by excitation
Coil II6 applies electric current input and isolation frequency range is widened, to meet difference conducive to the output damping force for increasing vibration isolator
The vibration isolation demand of vehicle under operating condition；The inner cavity of magnetic rheological isolator of the invention is divided into two and the company of being formed by the damper assembly
Logical upper and lower cavities.
In the present embodiment, the tapered outer magnetic core 26 is provided with radial lead channel；The wire channel is located at lower case 1
Side, the wire channel corresponding to tapered outer magnetic core 26 is arranged, conducive to the axial damp channel with tilt angle
Locate faradic control；The taper inner magnetic core 27 is fixed on every on magnetic pedestal 3, and the tapered outer magnetic core 26 is fixed on upper casing
It on body 9 and the side wall of lower case 1, is such as fixedly connected by screw, details are not described herein；It is logical that the lower case corresponds to the conducting wire
Threaded hole is provided at road, the threaded hole is built-in with sealing ring 12 and the sealing element 22 with through-hole；Conducive to wire channel
Sealing, the selection of the sealing element 22 belongs to the prior art, such as sealing screw, and details are not described herein.
In the present embodiment, further include for every magnetic every magnetic assembly；It is described to be pushed up every magnetic assembly including being set to upper magnetic sheet 28
Magnetism-isolating loop III20, inner magnetic core ring 30 and tapered inner magnetic core between upper magnetism-isolating loop I19, upper magnetic sheet 28 and the tapered inner magnetic core 27 held
The upper magnetism-isolating loop II8 of magnetic shield cylinder 7 and tapered 26 top of outer magnetic core between 27；The upper magnetism-isolating loop I19, upper magnetic sheet 28 and every magnetic
Ring III20 is fixed on the top of tapered inner magnetic core 27；The upper magnetism-isolating loop I19, upper magnetic sheet 28 and the fixed of magnetism-isolating loop III20 connect
It connects and belongs to the prior art, be such as connected by screw to, details are not described herein.
In the present embodiment, axially opposing step surface is provided on the inside of the upper housing 9 and lower case 1；Axial direction herein
Refer to the axial direction of the lower case 1 of barrel-like structure；The upper magnetism-isolating loop II8, tapered outer magnetic core 26 and being corresponding in turn to every magnetic pedestal 3 is matched
Conjunction is fixed between the axially opposing step surface；Conducive to the upper magnetism-isolating loop II8 and bottom end formed to tapered outer 26 top of magnetic core
Resisting every magnetic pedestal 3；The radial outside every magnetic pedestal 3 is provided with for elastic counterdie 2 to be fixed on lower case 1
Ladder platform on terrace；Described formed between 3 bottom end of magnetic pedestal and the step surface of lower case 1 accommodates and fixed elastic counterdie 2
Space, conducive to the fixation by the step surface being arranged every magnetic pedestal 3 to elastic counterdie 2；Conducive to the lower half for being full of magnetorheological fluid
The robust seal of cavity.
In the present embodiment, the lower magnetic sheet 32 is fixed on every on magnetic pedestal 3 and shaft core position is nearby provided with axial connection
Inertia channel, be conducive to alleviate magnetorheological fluid dynamic hardening phenomenon；The inertia channel top, which is provided with, is fixed on lower magnetic sheet 32
Decoupling film 24 in the groove of top；The setting of the decoupling film 23 is conducive to that the magnetorheological fluid in lower squeezing passage occurs dynamically hard
Effectively alleviated when change, conducive to the isolation frequency range for widening suspension；Described be correspondingly arranged on every magnetic pedestal 3 is used to described
Property channel connection through-hole；The lower magnetic sheet 32 is fixed on by fastener every on magnetic pedestal 3, conducive to the firm of structure is improved
Property, the selection of the fastener belongs to the prior art, and such as cylinder holding screw of slotting, details are not described herein.
In the present embodiment, it is provided in the week radial damp channel multiple for adjusting all radial damp channel relief widths
The thimble 23 of degree；The setting of the thimble 23 is conducive to realize the adjusting to vibration isolator output damping force.
In the present embodiment, the top of the upper housing 9 is provided with the elastic sealing element 10 for blocking upper housing 9, is used for
Vibration damping is realized by the damping change for the magnetorheological fluid being full of between elastic sealing element 10 and elastic counterdie 2 when vibration generates；It is described
The setting of elastic sealing element 10 and elastic counterdie 2 is conducive to the alleviation of the dynamic hardening phenomenon of magnetorheological fluid；The elastic sealing element
10 material selection belongs to the prior art, the rubber that such as elasticity is good, at low cost, the company of the elastic sealing element 10 and upper housing 9
It connects and belongs to the prior art, such as vulcanize, details are not described herein；The connecting rod 13 pass axially through after the elastic sealing element 10 with hair
The corresponding component of motivation connects.
In the present embodiment, the connecting rod 13 is fixed on by studs 18 and is squeezed on magnetic core 29；The studs 18
Flow-disturbing disk 17 is provided between connecting rod 13；Conducive to dynamic stiffness when being effectively reduced vibration isolator high-frequency vibration；The extruding magnetic core 29,
It is axially disposed in studs 18 and connecting rod 13 to have wire channel 15；The extruding magnetic core 29, studs 18 and connecting rod 13
The axial wire channel 15 of interior setting is interconnected；Conducive to radial to upper squeezed air-damping channel, lower squeezed air-damping channel and week
Faradic control at damp channel；It is provided with sealing ring in the wire channel 15, sealing and guarantor conducive to wire channel
Shield.
In the present embodiment, the reinforcement block 14 for 13 axially position of connecting rod is provided on the elastic sealing element 10；It is described
Liquid injection hole 11 and gas vent 16 are provided on reinforcement block 14；The liquid injection hole 11 and 16 holes of exhaust include the spiral shell through reinforcement block
The threaded hole of pit and the unthreaded hole in elastic sealing element 10, the liquid injection hole 11 is connected to unthreaded hole, the gas vent 16
Threaded hole is connected to unthreaded hole；The liquid injection hole 11 and gas vent 16 are sealed by sealing ring and sealing element；The sealing element
Such as slotted countersunk flat head screw, details are not described herein；13 top of connecting rod is provided with the outer spiral shell for connecting engine corresponding component
Line, 13 bottom end of connecting rod are provided with the screw hole for being cooperatively connected with studs 18；Conducive to power transmitting, it is conducive to connecting rod 13
And the connection of studs 18.
The mixed mode magnetic rheological isolator working principle of the present embodiment is: when vehicle engine assembly is driven by connecting rod 13
When mixed mode magnetic rheological isolator vibrates, damping force increases with the increase of exciting current in magnet exciting coil；By control by
Exciting current in different constant-current sources control magnet exciting coil I21 and magnet exciting coil II6, be adjusted vibration isolator output damping force and
Export the adjustable extent of damping force；Wherein magnet exciting coil I21 passes through to upper squeezed air-damping channel, lower squeezed air-damping channel and Zhou Jing
The control of magnetic induction intensity to damp channel can provide biggish damping force under low energy consumption and expand magnetic rheological isolator
Vibration isolation range；When magnet exciting coil I21 is not able to satisfy vibration isolation demand, apply electric current input to magnet exciting coil II6, and by tool
There is the control of magnetic induction intensity at the axial damp channel of tilt angle, the output damping force of vibration isolator is adjusted, adjusts vibration isolation
Frequency range, to meet the vibration isolation demand of vehicle under different operating conditions.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (10)
1. a kind of mixed mode magnetic rheological isolator, it is characterised in that: including by upper housing, the lower casing fastened with the upper housing
Body and it is set to the upper housing and the intracorporal damper assembly of lower casing；The damper assembly includes interior damper assembly and external damping group
Part；
The interior damper assembly includes squeezing magnetic core, spaced radial and being coated at squeeze the inner magnetic core ring of magnetic core, be placed in extruding magnetic core
On upper magnetic sheet and be placed in squeeze magnetic core under magnetic conduction disk and lower magnetic sheet；Described squeeze forms radial direction between magnetic core and upper magnetic sheet
Upper squeezed air-damping channel forms radial lower squeezed air-damping channel, the upper extruding resistance between extruding magnetic core and the magnetic conduction disk
Buddhist nun channel is connected to by squeezing magnetic core with the gap of inner magnetic core interannular with lower squeezed air-damping channel；The magnetic conduction disk and lower magnetic sheet
Between form the week radial damp channel for being connected to lower squeezed air-damping channel, the week radial damp channel with every corresponding on magnetic pedestal
Axially extending bore connection；Elastic counterdie is provided in the lower case；The extruding magnetic core is fixed on the connecting rod across upper housing, uses
It is connect in engine corresponding component.
2. mixed mode magnetic rheological isolator according to claim 1, it is characterised in that: the external damping component includes setting
Be placed in inner magnetic core ring radial outside tapered inner magnetic core and with the radial tapered tapered outer magnetic core being adapted to of tapered inner magnetic core；The cone
Inclined axial damp channel is formed between type inner magnetic core and tapered outer magnetic core；It is described axial direction damp channel with every corresponding on magnetic pedestal
Axially extending bore connection.
3. mixed mode magnetic rheological isolator according to claim 2, it is characterised in that: the tapered outer magnetic core is provided with
Radial lead channel；The taper inner magnetic core is fixed on every on magnetic pedestal, and the tapered outer magnetic core is fixed on upper housing and lower casing
On the side wall of body；The lower case corresponds to and is provided with threaded hole at the wire channel, the threaded hole be built-in with sealing ring and
Sealing element with through-hole.
4. mixed mode magnetic rheological isolator according to claim 2, it is characterised in that: further include for every magnetic every magnetic
Component；It is described every magnetic assembly include the magnetism-isolating loop being set between upper magnetism-isolating loop I, upper magnetic sheet and the tapered inner magnetic core on upper magnetic sheet top
The upper magnetism-isolating loop II of magnetic shield cylinder and tapered outer magnetic core top between III, inner magnetic core ring and tapered inner magnetic core；The upper magnetism-isolating loop
I, upper magnetic sheet and magnetism-isolating loop III are fixed on the top of tapered inner magnetic core.
5. mixed mode magnetic rheological isolator according to claim 4, it is characterised in that: in the upper housing and lower case
Side is provided with axially opposing step surface；The upper magnetism-isolating loop II, tapered outer magnetic core and every magnetic pedestal be corresponding in turn to cooperation fix
Between the axially opposing step surface；The radial outside every magnetic pedestal is provided with for elastic counterdie to be fixed on lower casing
Ladder platform on object table terrace.
6. mixed mode magnetic rheological isolator according to claim 1, it is characterised in that: the lower magnetic sheet is fixed on every magnetic
On pedestal and shaft core position is nearby provided with the inertia channel being axially connected to, and the inertia channel top, which is provided with, is fixed on lower magnetic
Decoupling film in the groove of plate top；It is described that the through-hole being connected to the inertia channel is correspondingly arranged on every magnetic pedestal.
7. mixed mode magnetic rheological isolator according to claim 1, it is characterised in that: in the week radial damp channel
It is provided with multiple for adjusting the thimble of all radial damp channel gap widths.
8. mixed mode magnetic rheological isolator according to claim 1, it is characterised in that: the top of the upper housing is arranged
There is the elastic sealing element for blocking upper housing, magnetic when generating for vibrating by being full of between elastic sealing element and elastic counterdie
The damping change of rheology liquid realizes vibration damping；The connecting rod passes axially through the corresponding component after the elastic sealing element with engine
Connection.
9. mixed mode magnetic rheological isolator according to claim 1, it is characterised in that: the connecting rod passes through studs
It is fixed on and squeezes on magnetic core；Flow-disturbing disk is provided between the studs and connecting rod；The extruding magnetic core, studs and connecting rod
Interior axially disposed have wire channel.
10. according to mixed mode magnetic rheological isolator described in claim 8 and 9, it is characterised in that: on the elastic sealing element
It is provided with the reinforcement block for connecting rod axially position；Liquid injection hole and gas vent are provided on the reinforcement block；The connecting rod top
It is provided with the external screw thread for connecting engine corresponding component, the connecting rod bottom end is provided with for being cooperatively connected with studs
Screw hole.
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