CN108644297A - A kind of parallel MR damper of small amplitude based on bipolar plates - Google Patents
A kind of parallel MR damper of small amplitude based on bipolar plates Download PDFInfo
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- CN108644297A CN108644297A CN201810487715.2A CN201810487715A CN108644297A CN 108644297 A CN108644297 A CN 108644297A CN 201810487715 A CN201810487715 A CN 201810487715A CN 108644297 A CN108644297 A CN 108644297A
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- end cover
- spring
- cylinder body
- telescopic shaft
- bipolar plates
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Classifications
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2224/00—Materials; Material properties
- F16F2224/04—Fluids
- F16F2224/045—Fluids magnetorheological
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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
- F16F2230/00—Purpose; Design features
- F16F2230/0005—Attachment, e.g. to facilitate mounting onto confer adjustability
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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
- F16F2230/00—Purpose; Design features
- F16F2230/30—Sealing arrangements
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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
- F16F2232/00—Nature of movement
- F16F2232/08—Linear
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present invention relates to a kind of parallel MR damper of small amplitude based on bipolar plates, two pole plates on telescopic shaft are in parallel by adjusting plate with the spring of cylinder body outer ring, while the magnetorheological fluid in moving back and forth extrusion chamber, spring is also being compressed or is being extended pole plate, and then generates damping force jointly.Adjustment plate can be with adjustment spring stroke, and then changes the damping force that spring provides.It is equipped with magnet exciting coil between cylinder body and isolating cylinder, changes the size in magnetic field by adjusting electric current, and then changes the form of magnetorheological fluid to adjust damping force.The present invention realizes the rigidity of damper and damps adjustable, have the characteristics that appearance and size is small, damping force is big and controllability is strong in combination with bipolar plates and spring, the vibration control field smaller especially suitable for amplitude, for example, cutting process vibration suppression etc..
Description
Technical field
The invention belongs to MR damper technical fields, and it is parallel magnetorheological to be related to a kind of small amplitude based on bipolar plates
Damper.Flutter Suppression etc. suitable for the vibration control field for small amplitude, such as in cutting process.
Background technology
Magnetorheological fluid is a kind of novel intelligent material with field controllable.Under magnetic fields, such material can
Using the speed of Millisecond from Solid State Transformation as liquid, and the process have invertibity, can preferably apply in mechanical structure, part
The industries such as processing.MR damper is a kind of buffer shock-absorbing device of function admirable, and working media is magnetorheological fluid.It is different from
Other normal dampers, are wound with coil in its structure, will produce magnetic field when galvanization in coil, make magnetorheological fluid that magnetic current occur
Change effect changes rigidity and damping in real time, realizes the control of damper power output, achievees the purpose that inhibit vibration.Currently, magnetic current
Variable damping device has been widely used in the fields such as automobile, building, space flight, robot and presents good application prospect.Magnetic
Rheological damper can be divided into valve type, shearing, squash type and cut according to the stress of magnetorheological fluid and the difference of flow feature
Cut four kinds of operating modes of valve type.
At present, most research and invention concentrate on valve type, shearing and shearing valve type, the research to squash type
It is relatively fewer.Studies have shown that in contrast squash type MR damper can generate the damping force of bigger.Common squash type
MR damper is relatively large sized, and since magnetorheological fluid rigidity is relatively low, Decay Rate is apparent so that damper is still
Thin tail sheep cannot be inhibited to vibrate well, controllability is poor.Thus, general squash type MR damper is ensureing to damp
In the case of power, size is big, cannot accurately control thin tail sheep vibration, vibration isolating effect is poor, and advantage is not apparent enough.
Invention content
Technical problems to be solved
In order to avoid the shortcomings of the prior art, the present invention proposes a kind of parallel magnetic current of small amplitude based on bipolar plates
Variable damping device, the size that solves existing squash type MR damper is larger, damping force is insufficient and small amplitude vibration situation
Under the poor problem of controllability.
Technical solution
A kind of parallel MR damper of small amplitude based on bipolar plates, it is characterised in that including telescopic shaft 1, adjustment plate
3, upper end cover 6, top crown 7, bottom crown 13, isolating cylinder 9, magnet exciting coil 10, cylinder body 11, bottom end cover 16, spring 5, connecting shaft 18
With magnetorheological fluid 12；The upper and lower ends of cylinder body 11 are connected upper end cover 6 and bottom end cover 16 by screw, equipped with adjustment on upper end cover 6
Plate 3, telescopic shaft 1 pass through the central through hole of adjustment plate 3 and upper end cover 6 to be inserted into cylinder body 11, are fastenedly connected by top nut 2；Spring 5
It is sleeved on 11 outer wall of cylinder body, is stretched between adjustment plate 3 and bottom end cover 16；Isolating cylinder 9 is located at the inside of cylinder body 11, magnet exciting coil 10
It is connect with power supply positioned between the two, and by the through-hole on cylinder body 11；The annulus of the inner ring protrusion of isolating cylinder 9 and upper end cover shape
At upper cavity, lower chamber is formed with bottom end cover；Top crown 7 and bottom crown 13 are separately mounted on telescopic shaft, and top crown 7 is located at
In upper cavity, bottom crown 13 is located in lower chamber so that two pole plates are in parallel by adjusting plate with the spring of cylinder body outer ring；It is described
The gap for so that magnetorheological fluid flows mutually in the upper and lower cavity of cylinder body is equipped between the annulus and telescopic shaft 1 at 9 center of isolating cylinder,
It is full of magnetorheological fluid 12 in entire cavity；The telescopic shaft 1 is tightly connected with upper end cover 6；The isolating cylinder 9 and bottom end cover 16 are close
Envelope connection.
16 bottom centre of the bottom end cover is equipped with blind hole, and blind hole is equipped with internal thread, and internal thread is connect with connecting shaft 18.
The adjustment plate and bottom crown are screw-thread fit with telescopic shaft and are fastened by nut that top crown was with telescopic shaft
It is full of cooperation.
The adjustment plate, top crown and bottom crown are ring-shaped structure.
The magnet exciting coil 10 is equal with 9 height of isolating cylinder, and upper end is contacted with upper end cover, and lower end is contacted with bottom end cover.
The groove for placing O-shaped rubber seal is equipped at the inner ring of the upper end cover, the lower face of upper end cover is equipped with annular
Bulge loop is equipped at annular convex ring and places O-shaped rubber seal groove.
The upper surface of the bottom end cover is equipped with annular convex ring, and annular convex ring is equipped with the groove for placing O-ring seal.
The upper end cover, top crown, bottom crown, cylinder body and bottom end cover use ingot iron DT4；The telescopic shaft uses
Aluminium, isolating cylinder use copper；The adjustment plate and connecting shaft use No. 45 steel.
The connecting shaft bottom end, telescopic shaft upper end are provided with connecting hole, are connect with the external world by pin or steel wire.
Advantageous effect
A kind of parallel MR damper of small amplitude based on bipolar plates proposed by the present invention, generated advantageous effect
It is：
1) telescopic shaft is compressed when driving upper and lower pole plate to be pressed down against the magnetorheological fluid in cavity, while by adjusting plate
Spring increases damping force, changes system stiffness and damping.After removing external force, pole plate can return under the action of spring restoring force
To original position；Telescopic shaft is drawn when driving the magnetorheological fluid in the upper and lower upward cavity of pole plate, while by adjusting plate
Spring is stretched, damping force is increased, changes system stiffness and damping.With after should removing external force, pole plate can be in the work of spring restoring force
Original position is returned under.
2) upper and lower two pole plates are housed on telescopic shaft of the invention, since squash type MR damper is compressed by pole plate
Magnetorheological fluid generates damping force, and the size of the sectional area of pole plate directly affects the size of damping force.Therefore in the pole of same cross-sectional area
Under plate, two pole plates can generate big twice of damping force.In addition, plus the damping force that spring provides, entire damper
Damping force increases more than one times.
3) adjustment plate of the invention is connected through a screw thread with telescopic shaft, and the height by adjusting adjustment plate can be with adjustment spring
Precommpression length, carry out the weight of balanced adjustment plate, telescopic shaft and upper bottom crown with this, and adjust position of the pole plate in cavity
It sets.And then change spring force, change rigidity and the damping of entire damper.
4) spring lower part of the invention and the upper surface of bottom end cover connect, and upper end is connect with adjustment plate.Outside spring and cylinder body
Wall does not contact, and avoids friction effects spring force and abrasion spring.Meanwhile spring is not contacted with magnetorheological fluid, prevents magnetic current
Become liquid and coat spring, influences spring and freely stretch.It, can be at any time according to requiring to replace suitable stiffness since spring is placed in outer wall of cylinder block
The spring of coefficient meets work requirements.
5) bottom crown of the invention is connected by screw thread with telescopic shaft, after bottom crown is dismantled, then can unipolar plate work,
The situation little suitable for required damping force.
6) telescopic shaft of the invention is designed as ladder axis shape, several shaft parts can be very good axial restraint adjustment plate,
The position of top crown and bottom crown.It is provided with connecting hole in flexible shaft end, can be connect with the external world by pin or steel wire.
7) magnet exciting coil of the invention is separated by with magnetorheological fluid by non-magnetic isolating cylinder, can so prevent magnetic
Rheology liquid pollutes magnet exciting coil, influences mass of coil；Two can be such that entire magnetorheological fluid is among magnet exciting coil magnetic field, prevent
Leak-stopping magnetic, the maximized magnetic rheology effect for playing magnetorheological fluid.In addition, being prevented equipped with sealing ring in upper and lower end cap magnetorheological
Liquid, which leaks outside to flow into the steam in air, influences magnetorheological fluid concentration.
8) bottom end cover of the present invention is equipped with internal thread hole, and when uneasy load spindle, damper can be placed directly within flat surfaces；Peace
When equipped with connecting shaft, height can be adjusted by being rotatably connected axis, be connect with testing machine or other equipment.In connecting shaft bottom end
It is provided with connecting hole, can be connect with the external world by pin or steel wire.
9) cylinder body, upper end cover and bottom end cover of the invention use the preferable electrical pure iron DT4 of magnetic property, constitute complete
Magnetic induction closed circuit, can make in this way magnet exciting coil generate magnetic field be preferably transmitted in magnetorheological fluid, prevent magnetic induction
Line interrupts.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention
Fig. 2 is the cylinder body sectional view of the present invention
Fig. 3 is the coil energization schematic diagram of the present invention
Fig. 4 is the adjustment plate movement schematic diagram of the present invention
Fig. 5 is the flexible axis side view of the present invention
Fig. 6 is the uniaxial pattern work sheet of the present invention
Fig. 7 is the monopole plate mode work sheet of the present invention
Fig. 8 is the three-dimensional model diagram of the present invention
In figure label for：
1, telescopic shaft；2, nut；3, adjustment plate；4, the first O-ring seal；5, spring；6, upper end cover；7, top crown；8、
Screw；9, isolating cylinder；10, magnet exciting coil；11, cylinder body；12, magnetorheological fluid；13, bottom crown；14, nut；15, O-ring seal；
16, bottom end cover；17, screw；18, connecting shaft.
Specific implementation mode
In conjunction with embodiment, attached drawing, the invention will be further described：
The technical solution used in the present invention is：Based on squash type MR damper principle, design is a kind of based on bipolar
The parallel MR damper of small amplitude of plate, including telescopic shaft, adjustment plate, upper end cover, top crown, bottom crown, isolating cylinder, encourage
Magnetic coil, cylinder body, bottom end cover, spring, connecting shaft and magnetorheological fluid etc..Entirely MR damper includes mainly from the point of view of structure
Internal bipolar plates and external spring two large divisions.The spring of two pole plates and cylinder body outer ring on telescopic shaft is by adjusting plate
Parallel connection, while the magnetorheological fluid in moving back and forth extrusion chamber, spring is also being compressed or is being extended pole plate, and then is generated jointly
Damping force.It is disposed with magnet exciting coil between cylinder body and isolating cylinder, changes the size in magnetic field by adjusting electric current, and then change magnetic current
Become the form of liquid to adjust damping force.
The telescopic shaft has multiple shaft parts, can be used to mounting and adjusting plate, top crown and bottom crown respectively, and adjustment plate, on
Pole plate and bottom crown are ring-shaped structure.Wherein, adjustment plate and bottom crown are for screw-thread fit and tight by nut with telescopic shaft
Gu top crown is interference fit with telescopic shaft.The isolating cylinder is ring-type, the annulus of inner ring protrusion by upper end cover, isolating cylinder and
The cavity of bottom end cover composition is divided into two cavitys up and down.The coil is fixed between isolating cylinder and cylinder body, upper end and upper end cover
Contact, lower end is contacted with bottom end cover.The cylinder body be ring-shaped structure, be mounted on coil outer, by soket head cap screw with
Upper and lower end cap is connected.The upper and lower end face of cylinder body, coil and isolating cylinder is aligned respectively, in same level height.The upper end
It is placed on cylinder body, magnet exciting coil and isolating cylinder, lower face is machined with annular convex ring and is used for coordinating with isolating cylinder inner ring.Together
Reason, the lower end is placed under cylinder body, isolating cylinder and isolating cylinder, thereon end face be machined with annular convex ring be used for in isolating cylinder
Circle cooperation.
Further technical solution is：Spring is placed between cylinder body outer ring, adjustment plate and bottom end cover.Due to adjustment plate with
Telescopic shaft is fixed, and it is in parallel with telescopic shaft to be equivalent to spring.Telescopic shaft is while driving upper and lower pole plate to move back and forth, spring
It moves up and down and stretches under the action of adjustment plate, the movement of the two is synchronous.Spring is not contacted with outer wall of cylinder block, prevents two
Friction effects spring rate between person causes to wear to spring, and then influences overall performance.On lower spring end and bottom end cover
End face connects, and upper end is connect with adjustment plate.Adjust adjustment plate height by turning adjustment plate, can with the compression of adjustment spring or
Elongation, and then change spring force, change the rigidity of entire damper.
Further technical solution is：It is provided with groove at the inner ring of upper end cover and at the annular convex ring of its lower face,
For placing O-shaped rubber seal；Similarly, it is also provided with groove on the annular convex ring of bottom end cover upper surface and places O-ring seal.
So magnetorheological fluid can be prevented, which to be leaked to outer and outside air and steam inflow cavity, influences magnetorheological fluid quality.
Further technical solution is：Bottom end cover is equipped with internal thread hole, and when uneasy load spindle, damper can directly be set
In flat surfaces；When connecting shaft is installed, height can be adjusted by being rotatably connected axis, connected with testing machine or other equipment
It connects.
Further technical solution is：Upper end cover, top crown, bottom crown, cylinder body and bottom end cover are due to being in excitation wire
On the line of magnetic induction loop of circle, using the higher ingot iron DT4 of magnetic conductivity；Telescopic shaft, does not need magnetic conduction at isolating cylinder, so
Aluminium and copper is respectively adopted；Adjustment plate and connecting shaft need to only meet rigidity needs, therefore use 45 steel.
Further technical solution is：It is provided with threading hole on cylinder body, the end of a thread of magnet exciting coil can be drawn, it is convenient logical
Electricity.It is provided with connecting hole on telescopic shaft and connecting shaft, can be connect with the external world by pin or steel wire.
Specific embodiment：
As shown in Figure 8：Entire MR damper is substantially cylindrical form from the point of view of appearance, and upper and lower ends have axis liter
Go out, outermost end is cased with spring.Entire damper shape is simple and beautiful, and size is smaller.
As shown in Figure 1：A kind of squash type MR damper of the big damping force of thin tail sheep of the present invention, including telescopic shaft 1,
Adjustment plate 3, top crown 7, bottom crown 13, isolating cylinder 9, magnet exciting coil 10, cylinder body 11, bottom end cover 16, spring 5, connects upper end cover 6
Spindle 18 and magnetorheological fluid 12 etc..
Telescopic shaft 1 has multiple shaft parts, is sequentially arranged with adjustment plate 3, upper end cover 6, top crown 7 and bottom crown 13 from top to bottom.
Wherein, adjustment plate 3, top crown 7 and bottom crown 13 are ring-shaped structure.Adjustment plate and 3 bottom crowns 13 and telescopic shaft 1 are screw thread
It is fastened with merga pass nut 2, top crown 7 is interference fit with telescopic shaft 1, and upper end cover 6 is clearance fit with telescopic shaft 1.On
6 inner ring of end cap is provided with groove to place the first O-ring seal 4, and the threaded hole for being separately provided with 6 M3 is convenient for connecting with cylinder body 11,
Lower face is machined with annular convex ring and is used for coordinating with 9 inner ring of isolating cylinder.Isolating cylinder 9 is ring-type, and the annulus of inner ring protrusion is by upper end
The cavity that lid 6, isolating cylinder 9 and bottom end cover 16 form is divided into two cavitys up and down, is filled in two cavitys prepared magnetorheological
Liquid 12.The magnet exciting coil 10 wound is fixed between isolating cylinder 9 and cylinder body 11, and upper end coordinates with upper end cover 6, lower end and lower end
Lid 16 coordinates.Such as Fig. 2, cylinder body 11 is ring-shaped structure, is mounted on outside coil 10, and end face is provided with 12 threaded holes up and down,
It is connected with upper and lower end cap for passing through soket head cap screw 8；Outside two, 11 wall of cylinder body is provided with threading hole and carrys out lead-out wire astragal head.Cylinder body
11, the upper and lower end face of magnet exciting coil 10 and isolating cylinder 9 is aligned respectively, in same level height.Similarly, the bottom end cover 16
It is placed under cylinder body 11, isolating cylinder 9 and coil 10, end face is machined with annular convex ring and is used for coordinating with 9 inner ring of isolating cylinder thereon, together
When be machined with 6 through-holes be used for soket head cap screw is installed.In upper and lower end cap magnetorheological fluid leakage and sky are prevented equipped with sealing ring
Steam in gas, which flows into, influences magnetorheological fluid concentration.Spring 5 is installed on 11 outer wall of cylinder body, is not contacted with outer wall of cylinder block, spring
Lower end is contacted with 16 upper surface of bottom end cover, and upper end is contacted with adjustment plate 3.
In concrete operations MR damper, the telescopic shaft 1 equipped with upper end cover 6, pole plate is risen up into cavity first.So
Afterwards, prepared magnetorheological fluid 12 is injected in cavity, pole plate is made to be located at suitable height and position.Then, upper and lower end cap is consolidated
It is fixed, and spring 5 is mounted between bottom end cover 16 and adjustment plate 3, the preload of adjustment spring is carried out by adjusting the height of adjustment plate
Amount balances static load with this.When magnet exciting coil 10 is not powered on, the magnetorheological fluid in cavity is in viscous fluid, in the mistake being extruded
Mobility is very strong in journey, and damping force at this moment is especially small, and the effect that damper plays is with regard to smaller.
Such as Fig. 3, by the end of a thread of magnet exciting coil 10 after the extraction of the threading hole of cylinder body, after being powered by D.C. regulated power supply,
Pass through the current knob of rotary DC regulated power supply, so that it may to change magnetic field size of the coil in the cavity at magnetorheological fluid, into
And make the flow regime of magnetorheological fluid.Electric current is bigger, magnetic field is stronger, magnetorheological fluid is also changed from liquid to class solid, and then hinders
Buddhist nun's power is bigger.But there are saturabilities for magnetorheological fluid, when electric current reaches a certain size, magnetic field intensity is not increasing.
Telescopic shaft 1 is compressed when driving upper and lower pole plate to be pressed down against the magnetorheological fluid 12 in cavity, while by adjusting plate
Spring 5 increases damping force, changes system stiffness and damping.After removing external force, pole plate can return under the action of spring restoring force
To original position；Telescopic shaft is drawn when driving the magnetorheological fluid in the upper and lower upward cavity of pole plate, while by adjusting plate
Spring is stretched, damping force is increased, changes system stiffness and damping.With after should removing external force, pole plate can be in the work of spring restoring force
Original position is returned under.Damping force, pole plate are generated since squash type MR damper compresses magnetorheological fluid by pole plate
The size of sectional area directly affect the size of damping force.Therefore under the pole plate of same cross-sectional area, two pole plates can generate
Big twice of damping force.In addition, plus the damping force that spring provides, the damping force of entire damper increases more than one times.
Adjustment plate 3 is connected through a screw thread with telescopic shaft 1, and the height by adjusting adjustment plate 3 can be with the precompressed of adjustment spring 5
Contracting length carrys out the weight of balanced adjustment plate 3, telescopic shaft 1 and upper bottom crown with this, and adjusts position of the pole plate in cavity.
Such as Fig. 4, adjustment plate is screwed onto extreme higher position, and spring is also and then flexible, and then changes spring force, changes the rigid of entire damper
Degree and damping.Spring 5 is not contacted with 11 outer wall of cylinder body, avoids friction effects spring force and abrasion spring.Meanwhile spring with
Magnetorheological fluid 12 does not contact, and prevents magnetorheological fluid from coating spring, influences spring and freely stretch.Since spring is placed in outer wall of cylinder block,
Can work requirements be met according to requiring to replace the spring of suitable stiffness factor at any time.
Such as Fig. 5,1 upper end of telescopic shaft is provided with connecting hole, can be connect with the external world by axis pin or steel wire.Connecting shaft lower end with stretch
Contracting axle construction is similar, does not illustrate.
Such as Fig. 6, when needing MR damper to be positioned over plane to support, the connecting shaft 18 at bottom end cover 16 can be torn open
It unloads, or is connect with ground by the screw thread of bottom end cover bottom, thus become uniaxial pattern and work.
Such as Fig. 7, when application scenario does not need larger damping force, since bottom crown and telescopic shaft are connected through a screw thread,
Bottom crown 13 can be dismantled, thus become the work of monopole plate mode.
Claims (9)
1. a kind of parallel MR damper of small amplitude based on bipolar plates, it is characterised in that including telescopic shaft (1), adjustment plate
(3), upper end cover (6), top crown (7), bottom crown (13), isolating cylinder (9), magnet exciting coil (10), cylinder body (11), bottom end cover
(16), spring (5), connecting shaft (18) and magnetorheological fluid (12)；The upper and lower ends of cylinder body (11) are connected upper end cover (6) by screw
With bottom end cover (16), adjustment plate (3) is housed on upper end cover (6), telescopic shaft (1) passes through the center of adjustment plate (3) and upper end cover (6)
Through-hole is inserted into cylinder body (11), and by top nut, (2 are fastenedly connected；Spring (5) is sleeved on cylinder body (11) outer wall, stretches in adjustment plate (3)
Between bottom end cover (16)；Isolating cylinder (9) is located at the inside of cylinder body (11), and magnet exciting coil (10) is located between the two, and passes through
Through-hole on cylinder body (11) is connect with power supply；The annulus of the inner ring protrusion of isolating cylinder (9) forms upper cavity with upper end cover, with lower end
Lid forms lower chamber；Top crown (7) and bottom crown (13) are separately mounted on telescopic shaft, and top crown (7) is located in upper cavity,
Bottom crown (13) is located in lower chamber so that two pole plates are in parallel by adjusting plate with the spring of cylinder body outer ring；The isolating cylinder
(9) it is equipped between the annulus and telescopic shaft (1) at center so that the gap that magnetorheological fluid flows mutually in the upper and lower cavity of cylinder body, whole
Magnetorheological fluid (12) is full of in a cavity；The telescopic shaft (1) is tightly connected with upper end cover (6)；The isolating cylinder (9) and lower end
(16) are covered to be tightly connected.
2. the parallel MR damper of small amplitude based on bipolar plates according to claim 1, it is characterised in that：Under described
End cap (16) bottom centre is equipped with blind hole, and blind hole is equipped with internal thread, and internal thread is connect with connecting shaft (18).
3. the small amplitude parallel MR damper according to claim 1 or claim 2 based on bipolar plates, it is characterised in that：Institute
It states adjustment plate and bottom crown to be screw-thread fit with telescopic shaft and fasten by nut, top crown is interference fit with telescopic shaft.
4. the small amplitude parallel MR damper according to claim 1 or claim 2 based on bipolar plates, it is characterised in that：Institute
It is ring-shaped structure to state adjustment plate, top crown and bottom crown.
5. the small amplitude parallel MR damper according to claim 1 or claim 2 based on bipolar plates, it is characterised in that：Institute
It is equal with isolating cylinder (9) height to state magnet exciting coil (10), upper end is contacted with upper end cover, and lower end is contacted with bottom end cover.
6. the small amplitude parallel MR damper according to claim 1 or claim 2 based on bipolar plates, it is characterised in that：Institute
The groove for being equipped at the inner ring of upper end cover and placing O-shaped rubber seal is stated, the lower face of upper end cover is equipped with annular convex ring, convex annular
It is equipped at ring and places O-shaped rubber seal groove.
7. the small amplitude parallel MR damper according to claim 1 or claim 2 based on bipolar plates, it is characterised in that：Institute
The upper surface for stating bottom end cover is equipped with annular convex ring, and annular convex ring is equipped with the groove for placing O-ring seal.
8. the small amplitude parallel MR damper according to claim 1 or claim 2 based on bipolar plates, it is characterised in that：Institute
It states upper end cover, top crown, bottom crown, cylinder body and bottom end cover and uses ingot iron DT4；The telescopic shaft uses aluminium, isolating cylinder to adopt
Use copper；The adjustment plate and connecting shaft use No. 45 steel.
9. the small amplitude parallel MR damper according to claim 1 or claim 2 based on bipolar plates, it is characterised in that：Institute
Connecting shaft bottom end is stated, telescopic shaft upper end is provided with connecting hole, is connect with the external world by pin or steel wire.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810487715.2A CN108644297A (en) | 2018-05-21 | 2018-05-21 | A kind of parallel MR damper of small amplitude based on bipolar plates |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810487715.2A CN108644297A (en) | 2018-05-21 | 2018-05-21 | A kind of parallel MR damper of small amplitude based on bipolar plates |
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| CN108644297A true CN108644297A (en) | 2018-10-12 |
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| CN111895031A (en) * | 2020-07-28 | 2020-11-06 | 河海大学 | Magnetorheological fluid damper with heat insulation function |
| CN112071723A (en) * | 2020-07-21 | 2020-12-11 | 西安交通大学 | Permanent magnet and repulsion force combined quick switch operating mechanism |
| CN112318939A (en) * | 2020-11-02 | 2021-02-05 | 夏桂兰 | Heat-sealing and spot-breaking equipment for producing degradable packaging bags |
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| CN112071723A (en) * | 2020-07-21 | 2020-12-11 | 西安交通大学 | Permanent magnet and repulsion force combined quick switch operating mechanism |
| CN111895031A (en) * | 2020-07-28 | 2020-11-06 | 河海大学 | Magnetorheological fluid damper with heat insulation function |
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| CN113513557A (en) * | 2021-06-03 | 2021-10-19 | 南京邮电大学 | Magnetorheological damper and loading force control method under wind load vibration |
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