CN105003589B - A kind of built-in magnetorheological valve carries out the MR damper of damping capacity control - Google Patents
A kind of built-in magnetorheological valve carries out the MR damper of damping capacity control Download PDFInfo
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- CN105003589B CN105003589B CN201510474450.9A CN201510474450A CN105003589B CN 105003589 B CN105003589 B CN 105003589B CN 201510474450 A CN201510474450 A CN 201510474450A CN 105003589 B CN105003589 B CN 105003589B
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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
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/182—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein comprising a hollow piston rod
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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
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/19—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein with a single cylinder and of single-tube type
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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
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
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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
- F16F9/3207—Constructional features
- F16F9/3221—Constructional features of piston rods
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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
- F16F9/3207—Constructional features
- F16F9/3235—Constructional features of cylinders
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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
- F16F9/537—Magnetorheological [MR] fluid dampers specially adapted valves therefor
Abstract
The invention discloses the MR damper that a kind of built-in magnetorheological valve carries out damping capacity control, mainly it is made up of piston rod, piston cylinder, damper cylinder body, valve element, floating piston, end cap and hanger etc..Piston cylinder, damper cylinder body, valve element, magnet exciting coil and cylinder body fluid course and U-shaped fluid course constitute built-in MR valve.When magnet exciting coil is conductive, magnetic flow liquid in cylinder body fluid course and U-shaped fluid course effective damping gap is reduced because galvanomagnetic-effect causes mobility, pressure differential can be formed between magnetic flow liquid cavity volume I and magnetic flow liquid cavity volume II, damping force suffered by making piston head right side changes, and realizes that MR valve controls the purpose of Damp Properties of Magnetorheological Damper.U-shaped fluid course effectively increases relaxation length, so as to increase damping force adjustable extent.The MR damper damping force adjustable range is big, compact conformation, small volume, is particularly well-suited to the vibration damping vibration prevention system such as railway, locomotive, bridge.
Description
Technical field
Damping capacity control is carried out the present invention relates to a kind of MR damper, more particularly to a kind of built-in magnetorheological valve
MR damper.
Background technology
MR damper is a kind of Novel intelligent damper part being widely used in semi-active control aystem.Its millisecond
The characteristics of level response speed, big control range and big damping force are exported so that it turns into half outstanding active of industrial application
Performer.Current MR damper vibration damping vibration prevention system in building and bridge, rail vehicles and automobile are outstanding
The aspects such as the vibration damping of frame system obtain extensive use.
MR damper is mainly used to the vibration of control system device generation, meets various kinds of equipment to different operating modes and not
With the use requirement under environment.Therefore the performance of MR damper directly influences the static and dynamic performance and work of various systems
Make reliability, be the core cell in vibration insulating system.
Conventional MR damper is general by piston, piston rod, cylinder body and the excitation being wrapped in piston winding slot
Coil is constituted.During work, by applying a certain size electric current to excitation coil, magnetic field is produced to pass through in fluid course
The yield strength of magnetic flow liquid changes, so that dynamic changes output damping force.
Most of existing MR damper uses circular ring type liquid flowing channel structure, liquid flowing resistance passage to be mainly disposed to line
Between circle inside or coil and sleeve, and the piston of wound around coil is typically fixedly connected with piston rod.Outside this kind of damper
Shape size is all than larger, and damping force adjustable extent is also narrow.
During MR damper structure design, flow direction and magnetic of the magnetic flow liquid in effective damping gap should be made first
Field direction is mutually perpendicular to；Next to that as far as possible lengthening fluid course of the magnetic flow liquid inside MR damper.Current institute
The MR damper of design uses the circular ring type liquid flow damping passage of single magnet exciting coil mostly, and is by following
Two methods improve the damping force adjustable extent of MR damper.One is under identical input current, as far as possible in magnetic current
Become the magnetic induction intensity improved in liquid saturation range in effective damping gap.Conventional method is to reduce the resistance of MR damper
Buddhist nun's gap width, but due to magnetic flow liquid be long placed in it is unused enable again when, easily occur particle precipitation so as to block damping clearance,
MR damper is caused to fail.Second is exactly to improve effective damping gap length, but can so dramatically increase magnetorheological damping
The volume of device, occupancy is more installed and uses space, and manufacturing cost also accordingly increases.
Based on this, in actual design process, it is desirable to while increasing the magnetic induction intensity in effective damping gap and raising
The length in effective damping gap is relatively difficult.Therefore, the MR damper of a kind of stable performance and structure relative compact is designed,
Damping force bigger, the damping force control range for exporting MR damper is wider, is the problem of industry urgent need to resolve, is also
Further widen the premise of MR damper commercial Application.
The content of the invention
In order to overcome problem present in background technology and meet MR damper actual operation requirements, the present invention is proposed
A kind of built-in magnetorheological valve carries out the MR damper of damping capacity control.The piston cylinder of the MR damper, damper
Cylinder body, valve element, magnet exciting coil and cylinder body fluid course and U-shaped fluid course constitute built-in MR valve, the built-in magnetic
The fluid course of rheology valve is collectively constituted by cylinder body fluid course and U-shaped fluid course.When being powered to magnet exciting coil, cylinder body liquid
A certain size magnetic field will be produced in circulation road and U-shaped fluid course effective damping gap, flow through the magnetic current in effective damping gap
Become fluid viscosity increase, yield stress enhancing, so that pressure differential is formed between magnetic flow liquid cavity volume I and magnetic flow liquid cavity volume II,
Effective control of damping force can be realized by controlling applying size of current.This structure design is sufficiently used walking for the magnetic line of force
To on the premise of damping clearance width is not reduced, increasing effective damping length and the section of shear, it is ensured that damper can
The sufficiently large damping force of output, while will not be resulted in blockage because damping clearance is too narrow.In addition, the excitation of the MR damper
Coil is wrapped on built-in magnetic rheology valve core, it is to avoid traditional MR damper magnet exciting coil is wrapped on piston head to be made
Into the small deficiency of damping force adjustable extent.Using the damping force dynamic regulation scope of the MR damper is big, compact conformation and
Small volume, is particularly well-suited to the isostructural vibration damping vibration prevention system of railway, automobile, bridge.
The technical solution adopted for the present invention to solve the technical problems includes：It is characterized in that including：Left hanger (1), work
Stopper rod (2), piston cylinder (3), left end cap (4), screw I (5), magnet exciting coil (6), damper cylinder body (7), floating piston (8), the right side
End cap (9), right hanger (10), screw II (11), compressed air cavity volume (12), magnetic flow liquid cavity volume I (13), cylinder body fluid course
(14), valve element (15), U-shaped fluid course (16), magnetic flow liquid cavity volume II (17), piston head (18), gas cavity volume I (19) and gas
Body cavity volume II (20)；The left end and right-hand member of piston rod (2) are machined with external screw thread respectively, and piston rod (2) left end is logical with left hanger (1)
The connection that is screwed is crossed, piston rod (2) right-hand member is threadably secured with piston head (18) and is connected；Piston rod (2) and piston cylinder (3)
Gap coordinates, and piston rod (2) is sealed with piston cylinder (3) by sealing ring；Piston head (18) is matched somebody with somebody with piston cylinder (3) gap
Close, piston head (18) is sealed with piston cylinder (3) by sealing ring；Outside piston cylinder (3) right part outer surface and middle part
Surface Machining has two sections of external screw threads；Piston cylinder (3) is threadably secured with left end cap (4) and is connected, piston cylinder (3) and left end cap
(4) sealed by sealing ring between；Piston cylinder (3) right part is threadably secured with damper cylinder body (7) and is connected；Left end
Lid (4) is fixedly connected with damper cylinder body (7) by screw I (5), by sealing between left end cap (4) and damper cylinder body (7)
Circle is sealed；Valve element (15) left side is machined with four circular positioning convex, and four circular positioning convex are right with left end cap (4)
Four circular groove interference fits of end face；Valve element (15) right side is machined with four circular positioning convex, four circular positioning
Raised four circular groove interference fits with damper cylinder body (7) end cap left side；Annular is machined with the middle of valve element (15)
Groove, in the groove of valve element (15), its lead is by the lead in damper cylinder body (7) end cap for magnet exciting coil (6) uniform winding
Hole is derived, and magnetic flow liquid can be avoided to be escaped by fairlead；Floating piston (8) coordinates with damper cylinder body (7) gap, floats and lives
Plug (8) is sealed with damper cylinder body (7) by sealing ring；Right end cap (9) is with damper cylinder body (7) by screw II (11)
It is fixedly connected；Right end cap (9) is sealed with damper cylinder body (7) by sealing ring；Right end cap (9) right-hand member is machined with outer spiral shell
Line, right end cap (9) is threadably secured with right hanger (10) and is connected；Cavity between damper cylinder body (7) and floating piston (8)
Form magnetic flow liquid cavity volume I (13)；Damper cylinder body (7) inner surface middle part constitutes damper cylinder body (7) end cap, damper
Cylinder body (7) end cap is machined with 4 waist through hole grooves being arranged circumferentially, and forms cylinder body fluid course (14)；Damper cylinder body
(7) cavity between end cap, piston head (18) and piston cylinder (3) forms magnetic flow liquid cavity volume II (17)；Valve element (15) outer surface
Annular fluid course I is surrounded with damper cylinder body (7) inner surface；Valve element (15) left side surrounds with left end cap (4) right side
Disc fluid course II；Valve element (15) inner surface surrounds annular fluid course III with piston cylinder (3) outer surface；Three sections of liquid streams
The damping clearance width of passage is 1mm；Annular fluid course I, disc fluid course II and annular fluid course
The III U-shaped fluid course (16) of composition；Magnetic flow liquid cavity volume I (13), magnetic flow liquid cavity volume II (17), U-shaped fluid course (16) with
And magnetic flow liquid is filled with cylinder body fluid course (14)；Magnetic flow liquid cavity volume I (13) and magnetic flow liquid cavity volume II (17) pass through
Cylinder body fluid course (14) is connected with U-shaped fluid course (16)；When piston head (18) side-to-side movement, magnetic flow liquid cavity volume I
(13) magnetic flow liquid and in magnetic flow liquid cavity volume II (17) is by cylinder body fluid course (14) and U-shaped fluid course (16) left and right
Flowing；Piston cylinder (3), damper cylinder body (7), valve element (15), magnet exciting coil (6) and cylinder body fluid course (14) and U-shaped liquid
Circulation road (16) constitutes the built-in MR valve of MR damper；When a certain size electric current is input into magnet exciting coil (6),
Due to galvanomagnetic-effect, produced in cylinder body fluid course (14) and U-shaped fluid course (16) vertical with magnetic flow liquid flowing direction
Magnetic field, magnetic flow liquid in cylinder body fluid course (14) and U-shaped fluid course (16) is flowed property reduces, so as to magnetorheological
Pressure differential is formed between liquid cavity volume I (13) and magnetic flow liquid cavity volume II (17), and then is made suffered by piston head (18) right side
There is respective change in damping force, realize that MR valve controls the purpose of Damp Properties of Magnetorheological Damper；In outside physical dimension
In the case of not increasing, U-shaped fluid course (16) effectively increases relaxation length, so as to increase damping force adjustable extent.It is living
Cavity between stopper rod (2) outer surface, piston cylinder (3) inner surface and piston head (18) left side forms gas cavity volume I (19)；
Cavity in the middle of piston rod (2) between circular groove and piston head (18) left side forms gas cavity volume II (20)；Piston rod
(2) right-hand member is machined with 4 manholes being arranged circumferentially, and during piston rod (2) side-to-side movement, gas cavity volume I (19) is gentle
Body cavity volume II (20) carries out gas compensation by manhole.Floating piston (8), damper cylinder body (7) and right end cap (9) it
Between cavity formed compressed air cavity volume (12)；Filling compressed gas in compressed air cavity volume (12)；When piston rod (2) vertically
When direction is moved, the volume of magnetic flow liquid cavity volume I (13) and magnetic flow liquid cavity volume II (17) can occur respective change, now float
Piston (8) can float to realize volume compensation by the left and right of axial direction.Piston cylinder (3), damper cylinder body (7) and valve element
(15) it is made up of mild steel permeability magnetic material；Left hanger (1), piston rod (2), left end cap (4), screw I (5), floating piston (8),
Right end cap (9), right hanger (10), screw II (11) and piston head (18) are made up of stainless steel non-magnet_conductible material.
The present invention has an advantageous effect in that compared with background technology：
（1）The circulation of the piston cylinder of MR damper of the present invention, damper cylinder body, valve element, magnet exciting coil and cylinder body liquid
Road and U-shaped fluid course constitute built-in MR valve, and the fluid course of the built-in MR valve is by cylinder body fluid course and U
Type fluid course is collectively constituted.When being powered to magnet exciting coil, in cylinder body fluid course and U-shaped fluid course effective damping gap
A certain size magnetic field will be produced, flow through the magnetic flow liquid viscosity increase in effective damping gap, yield stress enhancing, so as in magnetic
Pressure differential is formed between rheology liquid cavity volume I and cavity volume II, effective control of damping force can be realized by controlling applying size of current.
On the premise of damping clearance width is not reduced, this structure design increases effective damping length and the section of shear, it is ensured that
Damper can export sufficiently large damping force.
（2）With traditional wound magnet exciting coil piston compared with the MR damper that piston rod is fixedly connected, the present invention
The magnet exciting coil of MR damper is integrated on the valve element of built-in MR valve, is separated with piston rod during design, this point
From formula structure design on the premise of MR damper external dimensions is not increased, using less exciting current just it is exportable compared with
Big controllable damping force, while damping force dynamic regulation scope is wider, MR damper compact conformation of the present invention and small volume,
It is particularly well-suited to the isostructural vibration damping vibration prevention system of railway, automobile, bridge.
（3）Part used by MR damper of the present invention is led except piston cylinder, damper cylinder body and valve element by mild steel
Outside magnetic material is made, remaining parts are made by non-magnet_conductible material.This design can effectively ensure that the magnetic line of force is concentrated point as far as possible
Cloth gives full play to effect of the vertical magnetic field to magnetic flow liquid in effective damping gap, improves the efficiency of MR damper, and
Effectively reduce the energy consumption of MR damper.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is damper housing structure schematic diagram of the present invention.
Fig. 3 is the A-A profiles of Fig. 2 damper cylinder bodies.
Fig. 4 is inventive piston cylinder structure schematic diagram.
Fig. 5 is the B-B profiles of Fig. 4 piston cylinders.
Magnetic flow liquid flows through the schematic diagram of fluid course when Fig. 6 is Tensile of the present invention.
Fig. 7 is magnetic line of force distribution schematic diagram of the present invention.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples：
As shown in figure 1, the present invention includes：Left hanger 1, piston rod 2, piston cylinder 3, left end cap 4, screw I 5, magnet exciting coil
6th, damper cylinder body 7, floating piston 8, right end cap 9, right hanger 10, screw II 11, compressed air cavity volume 12, magnetic flow liquid cavity volume
I 13, cylinder body fluid course 14, valve element 15, U-shaped fluid course 16, magnetic flow liquid cavity volume II 17, piston head 18, gas cavity volume I 19
And gas cavity volume II 20.
Fig. 2 is damper housing structure schematic diagram of the present invention, and 21 is the end cap of damper cylinder body 7 in figure.
Fig. 3 is the A-A profiles of Fig. 2 damper cylinder bodies, and 22 is waist through hole groove in figure, and 23 is circular groove.Damper
The end cap of cylinder body 7 is machined with 4 waist through hole grooves 22 being arranged circumferentially, and forms cylinder body fluid course 14.The right side of valve element 15
It is machined with four circular grooves of four circular positioning convex, four circular positioning convex and the end cap left side of damper cylinder body 7
23 interference fits, play a part of axial restraint valve element 15.
Fig. 4 is inventive piston cylinder structure schematic diagram.The right part outer surface of piston cylinder 3 and middle part outer surface are machined with
Two sections of external screw threads；The left part inner surface of piston cylinder 3 is machined with two toroidal cavities；The right part of piston cylinder 3 is machined with 4 and supplies magnetic
Rheology liquid passes in and out the fluid course of U-shaped fluid course 16 and magnetic flow liquid cavity volume II 17.
Fig. 5 is the B-B profiles of Fig. 4 piston cylinders.24 is the manhole that piston cylinder right part is axially evenly arranged in figure,
4 manholes form the fluid course of the U-shaped fluid course 16 of turnover and magnetic flow liquid cavity volume II 17.
Magnetic flow liquid flows through fluid course schematic diagram when Fig. 6 is Tensile of the present invention.In figure, in magnetic flow liquid cavity volume I 13
Magnetic flow liquid flow through cylinder body fluid course 14 and U-shaped fluid course 16, entered by the manhole 24 of the right part of piston cylinder 3
In magnetic flow liquid cavity volume II 17.
Fig. 7 is magnetic line of force distribution schematic diagram of the present invention.Figure middle cylinder body fluid circulation road 14 and the effective damping of U-shaped fluid course 16
Magnetic flow liquid in gap is acted on by vertical magnetic field.
Operation principle of the present invention is as follows：
As shown in Fig. 1, Fig. 6 and Fig. 7：When piston rod drives piston head toward left movement, i.e. MR damper Tensile, magnetic
Magnetic flow liquid in rheology liquid cavity volume I flows through cylinder body fluid course and U-shaped fluid course, is led to by the circle of piston cylinder right part
Hole enters in magnetic flow liquid cavity volume II.When being powered to magnet exciting coil, due to magnetic fields, cylinder body fluid course and U-shaped liquid stream
Magnetic flow liquid viscosity in passage effective damping gap can increase, yield stress enhancing.Magnetic flow liquid flows through effective damping gap
When, the intermolecular power of this catenation is just must pull against, so as to the resistance for causing magnetic flow liquid to flow through fluid course increases,
Can slow down or prevent the flowing of liquid, and cause that magnetic flow liquid cavity volume I and magnetic flow liquid cavity volume II produce pressure differential.By regulation
Size of current in magnet exciting coil, can change the yield stress of magnetic flow liquid, to reach output damping needed for control piston head end face
The purpose of power size.
Conversely, piston rod drives piston head to turn right motion, i.e., when MR damper is compressed, now magnetic flow liquid cavity volume
Magnetic flow liquid in II flows through cylinder body fluid course and U-shaped fluid course, and magnetic is entered by the manhole of piston cylinder right part
In rheology liquid cavity volume I.By adjusting size of current in magnet exciting coil, same adjusting piston end surface exports damping force size.
Claims (5)
1. a kind of built-in magnetorheological valve carries out the MR damper of damping capacity control, it is characterised in that including：Left hanger
(1), piston rod (2), piston cylinder (3), left end cap (4), screw I (5), magnet exciting coil (6), damper cylinder body (7), floating piston
(8), right end cap (9), right hanger (10), screw II (11), compressed air cavity volume (12), magnetic flow liquid cavity volume I (13), cylinder body liquid
Circulation road (14), valve element (15), U-shaped fluid course (16), magnetic flow liquid cavity volume II (17), piston head (18), gas cavity volume I
And gas cavity volume II (20) (19)；The left end and right-hand member of piston rod (2) are machined with external screw thread, piston rod (2) left end and a left side respectively
Hanger (1) is threadably secured connection, and piston rod (2) right-hand member is threadably secured with piston head (18) and is connected；Piston rod (2) with
Piston cylinder (3) gap coordinates, and piston rod (2) is sealed with piston cylinder (3) by sealing ring；Piston head (18) and piston cylinder
(3) gap coordinates, and piston head (18) is sealed with piston cylinder (3) by sealing ring；Piston cylinder (3) right part outer surface is with
Between position outer surface be machined with two sections of external screw threads；Piston cylinder (3) is threadably secured with left end cap (4) and is connected, piston cylinder (3) with
Left end cap is sealed between (4) by sealing ring；Piston cylinder (3) right part and damper cylinder body (7) company of being threadably secured
Connect；Left end cap (4) is fixedly connected with damper cylinder body (7) by screw I (5), between left end cap (4) and damper cylinder body (7)
Sealed by sealing ring；Valve element (15) left side is machined with four circular positioning convex, four circular positioning convex and a left side
Four circular groove interference fits of end cap (4) right side；Valve element (15) right side is machined with four circular positioning convex, four
Circular positioning convex and four circular groove interference fits of damper cylinder body (7) end cap left side；Processing in the middle of valve element (15)
There is toroidal cavity, in the groove of valve element (15), its lead is by damper cylinder body (7) end cap for magnet exciting coil (6) uniform winding
In fairlead derive；Floating piston (8) and the cooperation of damper cylinder body (7) gap, floating piston (8) and damper cylinder body (7)
Sealed by sealing ring；Right end cap (9) is fixedly connected with damper cylinder body (7) by screw II (11)；Right end cap (9) with
Damper cylinder body (7) is sealed by sealing ring；Right end cap (9) right-hand member is machined with external screw thread, right end cap (9) and right hanger
(10) it is threadably secured connection；Cavity between damper cylinder body (7) and floating piston (8) forms magnetic flow liquid cavity volume I
(13)；Damper cylinder body (7) inner surface middle part constitutes damper cylinder body (7) end cap, and damper cylinder body (7) end cap is machined with
4 waist through hole grooves being arranged circumferentially, form cylinder body fluid course (14)；Damper cylinder body (7) end cap, piston head (18)
And the cavity between piston cylinder (3) forms magnetic flow liquid cavity volume II (17)；Valve element (15) outer surface and damper cylinder body (7) interior table
Face surrounds annular fluid course I；Valve element (15) left side surrounds disc fluid course II with left end cap (4) right side；Valve
Core (15) inner surface surrounds annular fluid course III with piston cylinder (3) outer surface；Three sections of damping clearance width of fluid course
It is 1mm；Annular fluid course I, disc fluid course II and annular fluid course III constitute U-shaped fluid course
(16)；Magnetic flow liquid cavity volume I (13), magnetic flow liquid cavity volume II (17), U-shaped fluid course (16) and cylinder body fluid course (14)
It is interior filled with magnetic flow liquid；Magnetic flow liquid cavity volume I (13) and magnetic flow liquid cavity volume II (17) are by cylinder body fluid course (14) and U
Type fluid course (16) is connected；When piston head (18) side-to-side movement, magnetic flow liquid cavity volume I (13) and magnetic flow liquid cavity volume II
(17) magnetic flow liquid in is by cylinder body fluid course (14) and the flowing of U-shaped fluid course (16) left and right；Piston cylinder (3), damping
Device cylinder body (7), valve element (15), magnet exciting coil (6) and cylinder body fluid course (14) and U-shaped fluid course (16) constitute magnetorheological
The built-in MR valve of damper；When a certain size electric current is input into magnet exciting coil (6), due to galvanomagnetic-effect, in cylinder body
The magnetic field vertical with magnetic flow liquid flowing direction is produced in fluid course (14) and U-shaped fluid course (16) effective damping gap,
Reduce the magnetic flow liquid flowing property in cylinder body fluid course (14) and U-shaped fluid course (16), so as in magnetic flow liquid cavity volume I
(13) pressure differential is formed and magnetic flow liquid cavity volume II (17) between, and then sends out the damping force suffered by piston head (18) right side
Raw respective change, realizes that MR valve controls the purpose of Damp Properties of Magnetorheological Damper；Do not increase in outside physical dimension
In the case of, U-shaped fluid course (16) effectively increases relaxation length, so as to increase damping force adjustable extent, it is ensured that damping
Device can export sufficiently large damping force；Magnet exciting coil (6) is integrated on the valve element of built-in MR valve (15), during design with
Piston rod (2) is separated, and this separate structure is designed on the premise of MR damper external dimensions is not increased, using smaller
Exciting current just exportable larger controllable damping force, while damping force dynamic regulation scope is wider.
2. a kind of built-in magnetorheological valve according to claim 1 carries out the MR damper of damping capacity control, and it is special
Levy and be：Cavity between piston rod (2) outer surface, piston cylinder (3) inner surface and piston head (18) left side forms gas
Cavity volume I (19)；Cavity in the middle of piston rod (2) between circular groove and piston head (18) left side forms gas cavity volume II
(20)；Piston rod (2) right-hand member is machined with 4 manholes being arranged circumferentially, and during piston rod (2) side-to-side movement, gas holds
Chamber I (19) and gas cavity volume II (20) carry out gas compensation by manhole.
3. a kind of built-in magnetorheological valve according to claim 1 carries out the MR damper of damping capacity control, and it is special
Levy and be：Cavity between floating piston (8), damper cylinder body (7) and right end cap (9) forms compressed air cavity volume (12)；
Filling compressed gas in compressed air cavity volume (12)；When piston rod (2) is in axial direction moved, magnetic flow liquid cavity volume I (13)
Respective change can occur with the volume of magnetic flow liquid cavity volume II (17), now floating piston (8) can be by the left and right of axial direction
Float to realize volume compensation.
4. a kind of built-in magnetorheological valve according to claim 1 carries out the MR damper of damping capacity control, and it is special
Levy and be：Piston cylinder (3), damper cylinder body (7) and valve element (15) are made up of mild steel permeability magnetic material；Left hanger (1), piston
Bar (2), left end cap (4), screw I (5), floating piston (8), right end cap (9), right hanger (10), screw II (11) and piston
Head (18) is made up of stainless steel non-magnet_conductible material.
5. a kind of built-in magnetorheological valve according to claim 1 carries out the MR damper of damping capacity control, and it is special
Levy and be：The lead of magnet exciting coil (6) is derived by the fairlead in damper cylinder body (7) end cap, and magnetic flow liquid can be avoided to lead to
Cross fairlead effusion.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106065916B (en) * | 2016-08-08 | 2018-10-09 | 华南理工大学 | A kind of the heavy damping magnetorheological fluid shock absorber and method of built-in ungulate iron core |
| CN109236936B (en) * | 2018-11-11 | 2023-12-22 | 华东交通大学 | Magnetorheological damper sealed by elastic metal corrugated pipe |
| CN109991016B (en) * | 2019-03-07 | 2020-09-25 | 江苏大学 | Magnetorheological damping automobile roller test bed and control method thereof |
| CN109822615B (en) * | 2019-03-28 | 2022-02-08 | 重庆大学 | Damping and rigidity controllable magneto-rheological damping joint device |
| CN110847408A (en) * | 2019-12-04 | 2020-02-28 | 武汉理工大学 | Rotary device for actively controlling structural vibration |
| CN114791027B (en) * | 2021-10-11 | 2023-05-12 | 广西科技大学 | Built-in hydraulic valve type damper with adjustable damping gap |
| CN114791026B (en) * | 2021-10-11 | 2023-05-05 | 广西科技大学 | Mixed valve type magneto-rheological damper |
| CN114251406B (en) * | 2021-11-18 | 2024-03-15 | 广西科技大学 | Rotary piston rod type anti-sedimentation magnetorheological damper |
| CN114151582B (en) * | 2021-12-10 | 2023-09-29 | 福州大学 | Magnetorheological fluid array valve device and control method thereof |
| CN115289168A (en) * | 2022-05-27 | 2022-11-04 | 深圳市朝上科技有限责任公司 | Magneto-rheological damper with toothed runner |
| CN115324982B (en) * | 2022-08-26 | 2024-03-26 | 中国人民解放军海军工程大学 | Self-adaptive hydraulic silencing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6279701B1 (en) * | 1999-09-13 | 2001-08-28 | Delphi Technologies, Inc. | Magnetorheological fluid damper with multiple annular flow gaps |
| DE102007021501B3 (en) * | 2007-05-04 | 2008-08-07 | Suspa Holding Gmbh | Hydraulically blockable piston-cylinder-unit, has valves formed such that equalization chamber is connected with one partial chamber when third valve is opened in which low pressure prevails in other chamber due to shifting movement of rod |
| CN102121509B (en) * | 2010-12-09 | 2013-01-23 | 重庆大学 | Magnetorheological damper with annular and disc-shaped liquid flow resistance channels simultaneously |
| CN103062146B (en) * | 2013-01-20 | 2015-04-22 | 华东交通大学 | Damping-clearance mechanical adjustable double-coil magnetorheological valve |
| CN203926577U (en) * | 2014-06-27 | 2014-11-05 | 四川工程职业技术学院 | Magnetorheological fluid shock absorber |
| CN104500787B (en) * | 2015-01-02 | 2016-10-26 | 华东交通大学 | A kind of mixed flow dynamic formula MR valve |
| CN205315604U (en) * | 2015-08-06 | 2016-06-15 | 华东交通大学 | Built -in magnetic current becomes magnetic current change attenuator that valve carries out control of damping performance |
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