CN106641071A - Magnetorheological fluid inflatable vibration reducer - Google Patents

Magnetorheological fluid inflatable vibration reducer Download PDF

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Publication number
CN106641071A
CN106641071A CN201611181010.5A CN201611181010A CN106641071A CN 106641071 A CN106641071 A CN 106641071A CN 201611181010 A CN201611181010 A CN 201611181010A CN 106641071 A CN106641071 A CN 106641071A
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CN
China
Prior art keywords
piston
flow liquid
magnetic flow
vibration damper
working cylinder
Prior art date
Application number
CN201611181010.5A
Other languages
Chinese (zh)
Inventor
陆雯
罗平
罗一平
刘文涛
杨斌
任洪娟
Original Assignee
上海工程技术大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海工程技术大学 filed Critical 上海工程技术大学
Priority to CN201611181010.5A priority Critical patent/CN106641071A/en
Publication of CN106641071A publication Critical patent/CN106641071A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/06Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
    • F16F9/061Mono-tubular units
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/3207Constructional features
    • F16F9/3214Constructional features of pistons
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/3207Constructional features
    • F16F9/3228Constructional features of connections between pistons and piston rods
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/36Special sealings, including sealings or guides for piston-rods
    • F16F9/366Special sealings, including sealings or guides for piston-rods functioning as guide only, e.g. bushings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/36Special sealings, including sealings or guides for piston-rods
    • F16F9/368Sealings in pistons
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/53Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
    • F16F9/535Magnetorheological [MR] fluid dampers
    • F16F9/537Magnetorheological [MR] fluid dampers specially adapted valves therefor

Abstract

The invention relates to a magnetorheological fluid inflatable vibration reducer. The magnetorheological fluid inflatable vibration reducer comprises a working cylinder, a piston rod inserted in the working cylinder and capable of performing a reciprocating motion, a piston module arranged at a free end of the piston rod, and a floating piston and a sealed gas chamber arranged below the piston module in sequence; the piston module divides an inner cavity of the working cylinder above the floating piston into a first working cavity and a second working cavity; both the first working cavity and the second working cavity are filled with magnetorheological fluid; the piston module includes a piston fixedly connected with the free end of the piston rod, a magnet exciting coil wound on the outer side wall of the piston, and circulating valves inserted through the piston; the magnetorheological fluid is circulated between the first working cavity and the second working cavity through the circulating valves; and the sealed gas chamber is filled with high-pressure gas. Compared with the prior art, the magnetorheological fluid inflatable vibration reducer is excellent in sealing effect, largely accelerates relative speeds of the piston module and the working cylinder, can generate high enough damping force, is excellent in noise eliminating effect, is high in magnet exciting utilization rate, and is low in energy consumption.

Description

A kind of magnetic flow liquid inflatable vibration damper

Technical field

The invention belongs to mechanical engineering technical field, is related to a kind of vibroshock, more particularly, to a kind of inflation of magnetic flow liquid Formula vibroshock.

Background technology

Magnetic flow liquid is a kind of new intellectual material, and specifically, the flow behavior for being exactly magnetic flow liquid can be with institute Plus magnetic field and change.When magnetic field is not added, magnetic flow liquid shows as liquid condition, and adds behind magnetic field, in magnetic flow liquid The polarized particle of random distribution, in chain or column structure, shows as solid state, and the mistake of a change along magnetic direction Cheng Feichang of short duration (Millisecond), and the process for being changed into solid state by liquid condition is reversible, once magnetic field eliminates, magnetic Rheology liquid can be rendered as liquid condition again.A kind of new vibration damping that MR fluid shock absorber is exactly designed using this characteristic Device, its damping force can be continuous along inverse regulation rapidly, realizes the intelligentized control method of structural vibration.Magneto-rheological vibration damper utilizes electromagnetism Road conditions and driving environment based on the input information from monitoring car body and wheel movement sensors, are made in real time by reaction Response.Magnetic rheological liquid is used as a kind of magnetic soft grit suspension, after liquid is injected into the solenoid in damper piston, line The magnetic field of circle will change its rheological behavior (or producing fluid resistance), so as to without electromechanical control valve and machinery is simple In the case of, generation is swift in response, the damping force that controllability is strong.Magneto-rheological vibration damper has an adjustable multiple is high of damping force, easily The features such as computer mutative damp real-time control, compact conformation and little outside input energy is realized, engineering circles are increasingly subject to Pay much attention to.

Authorization Notice No. discloses a kind of magnetic rheological liquid vibration-damper for automobile for the Chinese invention patent of the B of CN 102937158, Including:Working cylinder, piston component, air storage bag, piston component includes piston rod and piston only;Piston only is installed on working cylinder In, working cylinder is isolated into into epicoele first chamber and cavity of resorption;First chamber and cavity of resorption are full of magnetic flow liquid;Working cylinder and piston sheet Gap becomes the damp channel of connection first chamber and cavity of resorption between body;Damp channel between working cylinder and piston only constitutes outer Magnetic circuit, has magnet exciting coil to constitute internal magnetic circuit on piston only;By control coil current control magnetic field intensity, change magnetic flow liquid Viscosity, so as to control the damping force of MR fluid shock absorber;Air storage bag is arranged on working cylinder lower end, under air storage bag and working cylinder End forms the 4th chamber;4th within the chamber is full of noble gases;The vibroshock also includes leading screw, leading screw support member, nut piece, pushes away Power bearing;Piston-rod lower end has leading screw to pass through blind hole;Piston rod is connected with piston only thrust bearing;Screw mandrel support member is fixed on On working cylinder between piston only and air storage bag;Magnetic flow liquid is full of in working cylinder;Air storage bag fills with working cylinder sealed space Full noble gases;Axially there is damping hole on leading screw support member;Leading screw lower end is fixed on leading screw support member;Nut piece slide fit is non-certainly Lock is arranged on leading screw;Nut piece end is fastenedly connected with piston only, and leading screw upper end passes through installed in piston-rod lower end leading screw In blind hole;Piston rod up and down reciprocatingly drives the nut piece being fastenedly connected with piston only along leading screw rotation and lifting;Piston only around Thrust bearing rotates.However, in technical scheme disclosed in above-mentioned patent, wheel is subject to be vibrated greatly during impact suddenly, and noise is big, knot Structure is complicated, complex process.Compared with above-mentioned patent, sealed air chamber's structure design is adopted in vibroshock of the present invention, in sealed air chamber In be filled with gases at high pressure, be so effectively reduced the dither that wheel is subject to be produced during suddenly impact, and contribute to eliminating Noise;Structure more simplifies, and greatly reduces material cost.

The content of the invention

The purpose of the present invention is exactly the defect in order to overcome above-mentioned prior art to exist and provides one kind and be effectively reduced car Wheel is subject to the dither produced during impact suddenly, and elimination noise effects are good, the magnetic flow liquid inflatable vibration damper of safety and stability.

The purpose of the present invention can be achieved through the following technical solutions:

A kind of magnetic flow liquid inflatable vibration damper, including working cylinder, the piston that is plugged in working cylinder and is reciprocally moveable Bar, the piston component for being arranged on piston rod free end, the floating piston being successively set on below piston component and sealed air chamber, The inner chamber of the working cylinder above floating piston is separated into the first working chamber and the second working chamber by described piston component, described The first working chamber, the second working chamber in be filled with magnetic flow liquid, described piston component includes solid with piston rod free end The piston of fixed connection, winding are laid in the magnet exciting coil on piston lateral wall and the flowing valve through piston setting, described Magnetic flow liquid is circulated by flowing valve between the first working chamber and the second working chamber, is filled with described sealed air chamber Gases at high pressure.

Described piston is provided with compression valve and rebound valve.

Described piston is cylindrical piston, and annular groove is offered on the lateral wall of the cylindrical piston, and described encourages Magnetic coil is laid on the lateral wall of cylindrical piston along annular groove winding.

Described flowing valve is provided with a pair, and is symmetrical centre axially through setting with the center of circle of cylindrical piston cross section Put in cylindrical piston.

Described piston is fixedly connected by locking nut and pad with piston rod free end.

Guide holder is provided with the top of the first described working chamber, the free end of described piston rod is plugged in through guide holder In working cylinder.

The damping hole of a pair of opposing is offered on described guide holder.

Mounting groove is offered on the lateral wall of described floating piston, in the mounting groove O-ring seal is provided with.

Described working cylinder top is additionally provided with oil sealing, and the free end of described piston rod is plugged in working cylinder through oil sealing In.

In the present invention, described compression valve and rebound valve be all by one group of thickness is identical, diameter not etc., it is descending and arrange The spring steel plate composition of row.When actually used, the size of the channel cross-sectional area of compression valve and rebound valve with piston component fortune Dynamic velocity magnitude and change.Wherein, compression valve:When the downward movement velocity of piston is relatively low, hydraulic pressure is not enough to overcome the first work Make the pressure reduction between chamber and the second working chamber, now, the magnetic flow liquid of redundance is back to the first working chamber through gap;And When the speed that piston is moved downward is higher, the hydraulic pressure abruptly increase of the second working chamber reaches and be enough to overcome the first working chamber and second During pressure reduction between working chamber, compression valve will be pushed open, so that magnetic flow liquid flows into the first working chamber.Rebound valve:Work as piston When movement velocity upwards is relatively low, magnetic flow liquid Jing rebound valves flow into the second working chamber, due to channel cross-sectional area very little, just produce Hydraulic pressure, so as to consume vibrational energy, makes vibration decay rapidly;And work as and move on piston speed and increase to and be enough to overcome the first work During pressure reduction between chamber and the second working chamber, rebound valve is opened, channel cross-sectional area increase, makes hydraulic pressure be maintained at a fixed limit with pressure reduction Within degree.When vibroshock is started working, piston moves reciprocatingly in magnetic flow liquid, so that the first working chamber and the second work Make to produce pressure differential between chamber, magnetic flow liquid is just pushed compression valve or rebound valve open and flowed back and forth.

In actual design, floating piston is set in the bottom of working cylinder, and in floating piston and working cylinder one end shape Into sealed gas chamber in be full of gases at high pressure (nitrogen can be selected, pressure value is 2-3Mpa), in the work on floating piston top Magnetic flow liquid is filled in cylinder inner chamber, by the O-ring seal for arranging big cross section on floating piston, so as to by magnetic flow liquid and height Body of calming the anger is completely separable.The change of the first working chamber and the second working chamber volume that are caused due to the turnover of piston rod, then by The up and down motion of floating piston is compensating.

Compared with prior art, the invention has the characteristics that:

1) due in vibroshock, filled with gases at high pressure, the high frequency vibrating that wheel is subject to be produced during impact suddenly can be efficiently reduced It is dynamic, and contribute to eliminating noise;

2) in working cylinder filled with magnetic flow liquid, certain damping force can be produced, it is ensured that the accuracy of control performance and compared with Good fail safe;

3) its structure of inflatable vibration damper more simplifies, and greatly reduces material cost;

4) due to adopting fluid-tight, the leakage problems of magnetic flow liquid can effectively be prevented;

5) overall structure is simple, compact, good sealing effect, substantially increases the relative velocity of piston component and working cylinder, Sufficiently large damping force can be produced, elimination noise effects are good, and the durability and good reliability of magnetic flow liquid, excitation utilization rate is high, Energy consumption is little, can be widely used for numerous technical fields such as Vehicle Engineering, mechanical engineering, environmental protection, medical treatment, space flight and aviation engineering, military affairs, With good engineering adaptability and larger economic benefit.

Description of the drawings

Fig. 1 is the cross-sectional view of the present invention;

Fig. 2 is the cross-sectional view of the piston component of the present invention;

Fig. 3 is the cross-sectional view of the guide holder of the present invention;

Description of symbols in figure:

1-piston rod, 2-working cylinder, 3-piston component, 31-piston, 32-pad, 33-locking nut, 34-encourage Magnetic coil, 35-flowing valve, 4-rebound valve, 5-O-ring seal, 6-floating piston, 7-sealed air chamber, 8-compression valve, 9-guide holder, 91-damping hole, 10-oil sealing, the 11-the first working chamber, the 12-the second working chamber.

Specific embodiment

Below in conjunction with the accompanying drawings the present invention is described in detail with specific embodiment.

Embodiment:

As shown in figure 1, a kind of magnetic flow liquid inflatable vibration damper, including working cylinder 2, it is plugged in working cylinder 2 and can be past Multiple mobile piston rod 1, the piston component 3 for being arranged on the free end of piston rod 1, the floating for being successively set on the lower section of piston component 3 The inner chamber of the working cylinder 2 of the top of floating piston 6 is separated into the first working chamber 11 by piston 6 and sealed air chamber 7, piston component 3 And second working chamber 12, be filled with magnetic flow liquid in the first working chamber 11, the second working chamber 12, piston component 3 include with Piston 31 that the free end of piston rod 1 is fixedly connected, winding are laid in the magnet exciting coil 34 on the lateral wall of piston 31 and through work The flowing valve 35 that plug 31 is arranged, magnetic flow liquid is circulated by flowing valve 35 between the first working chamber and the second working chamber, Gases at high pressure (nitrogen can be selected, pressure value is 2-3Mpa) are filled with sealed air chamber 7.The top of working cylinder 2 is additionally provided with oil sealing 10, the free end of piston rod 1 is plugged in working cylinder 2 through oil sealing 10.

As shown in Fig. 2 piston 31 is provided with compression valve and rebound valve.Piston 31 be cylindrical piston, the cylindrical piston Lateral wall on offer annular groove, magnet exciting coil 34 is laid on the lateral wall of cylindrical piston along annular groove winding. Flowing valve 35 is provided with a pair, and is symmetrical centre axially through being arranged on cylindrical work with the center of circle of cylindrical piston cross section In plug.Piston 31 is fixedly connected by locking nut 33 and pad 32 with the free end of piston rod 1.

The top of the first working chamber 11 is provided with guide holder 9, and the free end of piston rod 1 is plugged in working cylinder 2 through guide holder 9 In.The damping hole 91 of a pair of opposing is offered on guide holder 9, as shown in Figure 3.

Mounting groove is offered on the lateral wall of floating piston 6, O-ring seal 5 is provided with the mounting groove, so as to will be magnetorheological Liquid and gases at high pressure are completely separable.The first working chamber 11 caused due to the turnover of piston rod 1 and the volume of the second working chamber 12 Change, then compensated by the up and down motion of floating piston 6.

In the present embodiment, compression valve 8 and rebound valve 4 be all by one group of thickness is identical, diameter not etc., it is descending and arrange Spring steel plate composition.When actually used, the size of the channel cross-sectional area of compression valve 8 and rebound valve 4 with piston component 3 fortune Dynamic velocity magnitude and change.Wherein, compression valve 8:When the downward movement velocity of piston 31 is relatively low, hydraulic pressure is not enough to overcome first Pressure reduction between the working chamber 12 of working chamber 11 and second, now, the magnetic flow liquid of redundance is back to the first work through gap Make chamber 11;And when the speed that piston 31 is moved downward is higher, the hydraulic pressure abruptly increase of the second working chamber 12 reaches and be enough to overcome first During pressure reduction between the working chamber 12 of working chamber 11 and second, compression valve 8 will be pushed open, so that magnetic flow liquid flows into first working Chamber 11.Rebound valve 4:When the movement velocity upwards of piston 31 is relatively low, magnetic flow liquid Jing rebound valves 4 flow into the second working chamber 12, Due to channel cross-sectional area very little, hydraulic pressure is just produced, so as to consume vibrational energy, make vibration decay rapidly;And work as on piston 31 Shifting speed is increased to when being enough to overcome the pressure reduction between the first working chamber 11 and the second working chamber 12, and rebound valve 4 is opened, and passage cuts Area increases, and hydraulic pressure is maintained within certain limit with pressure reduction.When vibroshock is started working, piston 31 is in magnetic flow liquid Move reciprocatingly, so that producing pressure differential between the first working chamber 11 and the second working chamber 12, magnetic flow liquid just pushes compression open Valve 8 or rebound valve 4 and flow back and forth.

The concrete operating principle of the present embodiment magnetic flow liquid inflatable vibration damper is as follows:

Stretching travel:When under power on situation, the magnet exciting coil 34 on piston component 3 has electric current to pass through, so that magnetic Rheology liquid produces damping force, and when piston rod 1 is in extended state, piston component 3 to the first working chamber 11 is moved, magnetic flow liquid Second working chamber 12 is flowed to by the rebound valve 4 between piston component 3 and working cylinder 2.Due to the presence of piston rod 1, from first The magnetic flow liquid that the stream of working chamber 11 comes also is insufficient for the volume that the second working chamber 12 is increased, now by floating piston 6 Up and down motion is compensated.

Compression travel:When under power on situation, the magnet exciting coil 34 on piston component 3 has electric current to pass through, so that magnetic Rheology liquid produces damping force, and now, piston 31 is moved down, and the volume reducing of the second working chamber 12, pressure rise, magnetic flow liquid passes through Compression valve 8 to the first working chamber 11 is flowed into.Similarly, since the presence of piston rod, the up and down motion for needing floating piston 6 is mended Repay.Due to the damping force that valve is larger to the generation of magnetic flow liquid, vibrational energy is consumed, make vibration decay.

The present embodiment design structure simplifies, can produce sufficiently large damping force, can be widely used for Vehicle Engineering, mechanic The various fields such as journey, environmental protection, medical treatment, space flight and aviation engineering, military affairs, with good engineering adaptability and larger economic effect Benefit.

The above-mentioned description to embodiment is that invention is understood that and used for ease of those skilled in the art. Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein general Principle is applied in other embodiment without through performing creative labour.Therefore, the invention is not restricted to above-described embodiment, ability Field technique personnel announcement of the invention, the improvement made without departing from scope and modification all should be the present invention's Within protection domain.

Claims (9)

1. a kind of magnetic flow liquid inflatable vibration damper, it is characterised in that including working cylinder, be plugged in working cylinder and reciprocally move Dynamic piston rod, the piston component for being arranged on piston rod free end, the floating piston being successively set on below piston component and The inner chamber of the working cylinder above floating piston is separated into the first working chamber and the second work by sealed air chamber, described piston component Make chamber, magnetic flow liquid is filled with described the first working chamber, the second working chamber, described piston component includes and piston rod Magnet exciting coil that piston that free end is fixedly connected, winding are laid on piston lateral wall and the circulation arranged through piston Valve, described magnetic flow liquid is circulated by flowing valve between the first working chamber and the second working chamber, described blanket gass Gases at high pressure are filled with room.
2. a kind of magnetic flow liquid inflatable vibration damper according to claim 1, it is characterised in that described piston is provided with Compression valve and rebound valve.
3. a kind of magnetic flow liquid inflatable vibration damper according to claim 2, it is characterised in that described piston is cylinder Shape piston, offers annular groove on the lateral wall of the cylindrical piston, described magnet exciting coil is laid along annular groove winding On the lateral wall of cylindrical piston.
4. a kind of magnetic flow liquid inflatable vibration damper according to claim 3, it is characterised in that described flowing valve is provided with A pair, and be symmetrical centre axially through being arranged in cylindrical piston with the center of circle of cylindrical piston cross section.
5. a kind of magnetic flow liquid inflatable vibration damper according to claim 3, it is characterised in that described piston is by lock Tight nut and pad are fixedly connected with piston rod free end.
6. a kind of magnetic flow liquid inflatable vibration damper according to claim 3, it is characterised in that the first described working chamber Top be provided with guide holder, the free end of described piston rod is plugged in working cylinder through guide holder.
7. a kind of magnetic flow liquid inflatable vibration damper according to claim 6, it is characterised in that open on described guide holder It is provided with the damping hole of a pair of opposing.
8. a kind of magnetic flow liquid inflatable vibration damper according to any one of claim 1 to 7, it is characterised in that described Mounting groove is offered on the lateral wall of floating piston, in the mounting groove O-ring seal is provided with.
9. a kind of magnetic flow liquid inflatable vibration damper according to claim 8, it is characterised in that described working cylinder top Oil sealing is additionally provided with, the free end of described piston rod is plugged in working cylinder through oil sealing.
CN201611181010.5A 2016-12-20 2016-12-20 Magnetorheological fluid inflatable vibration reducer CN106641071A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108071624A (en) * 2017-08-24 2018-05-25 深圳市罗伯医疗科技有限公司 A kind of integrated hydraulic cylinder

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Publication number Priority date Publication date Assignee Title
CN1170101A (en) * 1996-06-25 1998-01-14 王明珠 Single cylinder aerating bidirectional vibration absorber
CN201723641U (en) * 2010-08-06 2011-01-26 长春工程学院 Novel magnetorheological fluid shock absorber
CN201875043U (en) * 2010-12-07 2011-06-22 四川中物科技集团有限公司 Slide-valve-type magnetorheological shock absorber
CN102287477A (en) * 2011-08-15 2011-12-21 重庆大学 Magnet-rheological shock absorber for automobile suspension system
US20130025987A1 (en) * 2011-07-18 2013-01-31 David Batterbee Methods and apparatus for controlling a fluid damper
CN102937158A (en) * 2012-11-12 2013-02-20 富奥汽车零部件股份有限公司 Magneto-rheological fluid damper for automobile
CN203248591U (en) * 2013-05-16 2013-10-23 哈尔滨理工大学 Vibration damper for heavy-loaded truck
US8955653B2 (en) * 2009-10-13 2015-02-17 Fox Factory, Incorporated Methods and apparatus for controlling a fluid damper
CN204572896U (en) * 2015-02-05 2015-08-19 成都北方石油勘探开发技术有限公司 A kind of drilling well MR vibration damper

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1170101A (en) * 1996-06-25 1998-01-14 王明珠 Single cylinder aerating bidirectional vibration absorber
US8955653B2 (en) * 2009-10-13 2015-02-17 Fox Factory, Incorporated Methods and apparatus for controlling a fluid damper
CN201723641U (en) * 2010-08-06 2011-01-26 长春工程学院 Novel magnetorheological fluid shock absorber
CN201875043U (en) * 2010-12-07 2011-06-22 四川中物科技集团有限公司 Slide-valve-type magnetorheological shock absorber
US20130025987A1 (en) * 2011-07-18 2013-01-31 David Batterbee Methods and apparatus for controlling a fluid damper
CN102287477A (en) * 2011-08-15 2011-12-21 重庆大学 Magnet-rheological shock absorber for automobile suspension system
CN102937158A (en) * 2012-11-12 2013-02-20 富奥汽车零部件股份有限公司 Magneto-rheological fluid damper for automobile
CN203248591U (en) * 2013-05-16 2013-10-23 哈尔滨理工大学 Vibration damper for heavy-loaded truck
CN204572896U (en) * 2015-02-05 2015-08-19 成都北方石油勘探开发技术有限公司 A kind of drilling well MR vibration damper

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108071624A (en) * 2017-08-24 2018-05-25 深圳市罗伯医疗科技有限公司 A kind of integrated hydraulic cylinder

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Application publication date: 20170510