CN108930752A - A kind of MR damper - Google Patents
A kind of MR damper Download PDFInfo
- Publication number
- CN108930752A CN108930752A CN201810813284.4A CN201810813284A CN108930752A CN 108930752 A CN108930752 A CN 108930752A CN 201810813284 A CN201810813284 A CN 201810813284A CN 108930752 A CN108930752 A CN 108930752A
- Authority
- CN
- China
- Prior art keywords
- inner cylinder
- piston
- lower cover
- damper
- damper according
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
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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
- 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
-
- 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
- F16F9/36—Special sealings, including sealings or guides for piston-rods
- F16F9/362—Combination of sealing and guide arrangements for 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
- F16F9/36—Special sealings, including sealings or guides for piston-rods
- F16F9/368—Sealings in pistons
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The present invention provides a kind of MR damper, including outer cylinder, inner cylinder, upper end cover, lower cover, piston and electromagnetism terminal.Wherein, inner cylinder is arranged in outer cylinder, and upper end cover and lower cover are arranged in the both ends of inner barrel and outer barrel.Magnetorheological fluid is full of in gap and inner cylinder between inner cylinder and outer cylinder.Wherein one end of piston is arranged in inner cylinder, and the other end of piston is connect with upper end cover, and piston can be moved up and down along the inner sidewall of inner cylinder.The side wall of inner cylinder is equipped with the through-hole for magnetorheological fluid circulation, and electromagnetism terminal is connect with lower cover.Fast response time can be effectively protected electromagnetic wire to improve system reliability and service life.
Description
Technical field
The invention belongs to buffer technology fields, and in particular to a kind of MR damper.
Background technique
Buffer is that the mechanical device being widely used under high-strength impact environment is kept away for reducing the overbump of structure
Exempt from the resonance problem of structure.Buffer includes two kinds of forms: passive type buffer, half active buffer.Half active buffer is logical
It is often the buffer designed using MR damper as damped part.MR damper is a kind of novel intelligent controller
Part can be used for the semi- active control vibrated.Due to MR damper have damping force is continuously adjustable, dynamic range is wide,
Power output is big, response rapidly and structure is simple etc. a little, therefore, it is main that MR damper becomes most promising in recent years half
Movement controller part, and applied in fields such as automobile, bridge, building and military products.
MR damper relatively broad on engineer application is moving-coil type at present, and the conducting wire of damper can follow piston
Movement, therefore, long-term reciprocating motion and the impact of unexpected big displacement in the application of buffer, it is easy to conducting wire be caused to damage
Bad, there are great security risks.The magnetic field of moving-coil type MR damper simultaneously, since coil is moving always, so its
The magnetic field of generation is also moving always, can reduce the response speed of magnetic rheology effect in this way.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, a kind of fast response time, Neng Gouyou are provided
Effect ground protection electromagnetic wire is to improve the MR damper of system reliability and service life.
In order to solve the above technical problems, technical solution proposed by the present invention are as follows:
A kind of MR damper, including outer cylinder, inner cylinder, upper end cover, lower cover, piston and electromagnetism terminal.Wherein, inner cylinder
It is arranged in outer cylinder, upper end cover and lower cover are arranged in the both ends of inner barrel and outer barrel.Gap between inner cylinder and outer cylinder and
Magnetorheological fluid is full of in inner cylinder.Wherein one end of piston is arranged in inner cylinder, and the other end of piston is connect with upper end cover, and living
Plug can be moved up and down along the inner sidewall of inner cylinder.The side wall of inner cylinder is equipped with the through-hole for magnetorheological fluid circulation, electromagnetism terminal
It is connect with lower cover.
Electromagnetism terminal is fixed on lower cover by MR damper according to the present invention, is driven using piston magnetorheological
Liquid actively passes through gapped magnetic field channel, therefore electromagnetic wire would not be moved with piston, so as to effectively improve magnetic
The reliability and service life of rheological damper.Fixed magnetic field avoids moving-coil type MR damper in the prior art simultaneously
Caused by magnetic field the problem of frequently changing, therefore the response speed of MR damper can be improved.In addition, according to the present invention
MR damper is by forming magnetic loop between electromagnetism terminal and inner cylinder side wall, structure letter while improving properties of product
It is single effective, it is easy to maintain, it is cheap.Forming magnetic current channel loop by way of the punching of inner cylinder side wall, be conducive to reduce
The viscous damping force of MR damper.
For above-mentioned technical proposal, the further improvement that can also be discussed below.
MR damper according to the present invention, in one preferred embodiment, electromagnetism terminal include magnetic circuit part
And coil, the wire head of coil are pierced by by electromagnetism terminal center from lower cover.The wire head of coil through electromagnetism terminal center from
Lower cover is pierced by, and can make the beauty simple for structure of electromagnetism terminal, is avoided wire head from being retained in inner cylinder and is destroyed.
Specifically, in one preferred embodiment, piston includes piston rod and piston head.Wherein, piston rod is vertical
It is arranged on piston head, the inner sidewall of piston head and inner cylinder is in clearance fit, and piston rod passes through upper end cover.
Further, in one preferred embodiment, piston rod is connect by bearing and sealing element with upper end cover.It adopts
With the mounting means of bearing and sealing element, ensure piston rod can be moved up and down along inner cylinder ensure damping characteristic under the premise of,
Make the structure of entire MR damper as far as possible and assembles simpler.It can also prevent magnetorheological fluid from letting out by sealing element
Dew, in order to avoid influence the working effect of MR damper.
Further, in one preferred embodiment, it is close that several layers are equipped between piston head and the inner sidewall of inner cylinder
Seal.By the way that multi-layer sealed circle is arranged, clearance backflow of the magnetorheological fluid between piston head and the inner sidewall of inner cylinder can be prevented.
Further, in one preferred embodiment, upper cover of piston rod is equipped with buffer unit.
The through-hole on buffering collision, positioning and protection inner cylinder, which can be played, by buffer unit to be blocked by piston motion
Effect.
Further, in one preferred embodiment, it is set in the bar portion structure being connect on electromagnetism terminal with lower cover
There is buffer unit.
The through-hole on buffering collision, positioning and protection inner cylinder, which can be played, by buffer unit to be blocked by piston motion
Effect.
Specifically, in one preferred embodiment, buffer unit includes rubber buffer.Rubber buffer mat structure letter
It is single, at low cost, install convenient.
Further, in one preferred embodiment, upper end cover and lower cover and inner barrel and outer barrel are all made of screw thread
The mode of connection connects.By the way of threaded connection, structure is simple, mounts and dismounts simple and convenient.
Further, in one preferred embodiment, electromagnetism terminal is connected by the way of being threadedly coupled with lower cover
It connects.By the way of threaded connection, structure is simple, mounts and dismounts simple and convenient.
Compared with the prior art, the advantages of the present invention are as follows: fast response time, can be effectively protected electromagnetic wire to
Improve system reliability and service life.
Detailed description of the invention
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein:
Fig. 1 schematically illustrates the whole cross-section structure of the MR damper of the embodiment of the present invention.
In the accompanying drawings, identical component uses identical appended drawing reference.Attached drawing is not according to actual ratio.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, invention is further described in detail, but does not therefore limit this
The protection scope of invention.
Fig. 1 schematically illustrates the whole cross-section structure of the MR damper 10 of the embodiment of the present invention.
As shown in Figure 1, the MR damper 10 of the embodiment of the present invention includes outer cylinder 1, inner cylinder 2, upper end cover 3, lower cover
4, piston 5 and electromagnetism terminal 6.Wherein, inner cylinder 2 is arranged in outer cylinder 1, and upper end cover 3 and lower cover 4 are arranged in 2 He of inner cylinder
The both ends of outer cylinder 1.Magnetorheological fluid 7 is full of in gap and inner cylinder 2 between inner cylinder 2 and outer cylinder 1.Wherein one end of piston 5 is arranged
In inner cylinder 2, the other end of piston 5 is connect with upper end cover 3, and piston 5 can be moved up and down along the inner sidewall of inner cylinder 2.It is interior
The side wall of cylinder 2 is equipped with the deflector hole 21 to circulate for magnetorheological fluid 7, and electromagnetism terminal 6 is connect with lower cover 4.According to the present invention
Electromagnetism terminal is fixed on lower cover by the MR damper of embodiment, actively passes through magnetic using piston driving magnetorheological fluid
Field clearance channel, therefore electromagnetic wire would not be moved with piston, so as to effectively improve MR damper
Reliability and service life.Fixed magnetic field avoids the frequency of magnetic field caused by moving-coil type MR damper in the prior art simultaneously
The problem of numerous variation, therefore the response speed of MR damper can be improved.In addition, MR damper according to the present invention
By forming magnetic loop between electromagnetism terminal and inner cylinder side wall, structure is simple and effective while improving properties of product, maintenance
It is convenient, it is cheap.Forming magnetic current channel loop by way of the punching of inner cylinder side wall, be conducive to reduce MR damper
Viscous damping force.
Further, in one preferred embodiment, upper end cover 3 and lower cover 4 are all made of with inner cylinder 2 and outer cylinder 1
The mode of threaded connection connects.Electromagnetism terminal 6 is connect by the way of being threadedly coupled with lower cover 4.Using the side of threaded connection
Formula, structure is simple, mounts and dismounts simple and convenient.
The MR damper 10 of the embodiment of the present invention, in one preferred embodiment, as shown in Figure 1, electromagnetism end
Son 6 includes magnetic circuit part 61 and coil 62, and the wire head 621 of coil 62 is pierced by by 6 center of electromagnetism terminal from lower cover 4.Tool
Body, the center of electrical terminal is equipped with through-hole, and wire head is sealed after through-hole export, then by through-hole, prevents magnetorheological fluid
Leakage influences the working effect of entire MR damper.The wire head of coil is pierced by through electromagnetism terminal center from lower cover, can
So that the beauty simple for structure of electromagnetism terminal, avoids wire head from being retained in inner cylinder and is destroyed.It is preferred real at another
It applies in mode, coil 62 can also be replaced using permanent magnet.The structure of entire MR damper can be made simpler in this way
It is single, and service life and reliability are further enhanced.
As shown in Figure 1, specifically, in one preferred embodiment, piston 5 includes piston rod 52 and piston head 51.
Wherein, piston rod 52 is arranged vertically on piston head 51, and the inner sidewall of piston head 51 and inner cylinder 2 is in clearance fit, piston rod 52
Across upper end cover 3.Further, in one preferred embodiment, piston rod 52 passes through bearing and sealing element and upper end cover
Connection.Using the mounting means of bearing and sealing element, ensure damping characteristic ensuring that piston rod can be moved up and down along inner cylinder
Under the premise of, make the structure of entire MR damper as far as possible and assembles simpler.Magnetic current can also be prevented by sealing element
Become liquid leakage, in order to avoid influence the working effect of MR damper.
As shown in Figure 1, further, in one preferred embodiment, between piston head 51 and the inner sidewall of inner cylinder 2
Equipped with several layers sealing ring 8.By the way that multi-layer sealed circle is arranged, can prevent magnetorheological fluid from the inner sidewall of piston head and inner cylinder it
Between clearance backflow.
In one preferred embodiment, buffer unit 9 is arranged on piston rod 52.Further, preferably at one
Embodiment in, the bar portion structure that connect on electromagnetism terminal 6 with lower cover 4 is equipped with buffer unit 9.Pass through buffer unit energy
The through-hole enough played the role of on buffering collision, positioning and protection inner cylinder will not be blocked by piston motion.Specifically, excellent at one
In the embodiment of choosing, buffer unit 9 includes rubber buffer.Rubber buffer mat structure is simple, at low cost, install convenient.
As shown in Figure 1, the working principle of the MR damper 10 of the embodiment of the present invention is as follows:
Dotted arrow circuit in Fig. 1 on electromagnetism terminal 6 is magnetic loop, and the solid arrow circuit in Fig. 1 is magnetorheological fluid
Flow circuits.
Magnetorheological fluid 7 can be squeezed when piston 5 is with external impact generation movement to pass sequentially through in electromagnetism terminal 6 and circle
Clearance channel between cylinder 2, then by the magnetorheological fluid deflector hole 21 of 2 lower end of circular inner tube again through circular inner tube 2 and circle outside
The deflector hole 21 of 2 upper end of annular gap and circular inner tube between cylinder 1, finally flows back into piston head 51, circular inner tube 2 and upper end
The upper space that lid 3 is collectively formed, to form complete magnetorheological fluid circuit.Meeting when magnetorheological fluid 7 passes through electromagnetism clearance channel
Magnetic rheology effect is generated, to generate the effect of damping force adjustable.Wherein, since electromagnetism terminal 6 is fixed on lower cover,
Piston 5 drives the mode of magnetorheological fluid active Flow to realize the adjustable effect of damping force, thus plays to electromagnetic wire
Protective effect effectively improves the reliability and service life of MR damper entirety.Also, fixed electromagnetism terminal 6
The dynamic for avoiding magnetic field is generated and is established, to optimize the response speed of MR damper.
According to above-described embodiment, it is seen then that compared with prior art, the present invention the present invention has the advantages that fast response time,
Electromagnetic wire can be effectively protected to improve system reliability and service life.
Although by reference to preferred embodiment, invention has been described, the case where not departing from the scope of the invention
Under, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as there is no structures to rush
Prominent, items technical characteristic mentioned in the various embodiments can be combined in any way.The invention is not limited to texts
Disclosed in specific embodiment, but all technical solutions including falling within the scope of the claims.
Claims (10)
1. a kind of MR damper, which is characterized in that including outer cylinder, inner cylinder, upper end cover, lower cover, piston and electromagnetism terminal；
Wherein,
In the outer cylinder, the upper end cover and the lower cover are arranged in the inner cylinder and described outer to inner cylinder arrangement
The both ends of cylinder；
Magnetorheological fluid is full of in gap and the inner cylinder between the inner cylinder and the outer cylinder；
Wherein one end of the piston is arranged in the inner cylinder, and the other end of the piston is connect with the upper end cover, and
The piston can be moved up and down along the inner sidewall of the inner cylinder；
The side wall of the inner cylinder is equipped with the through-hole for magnetorheological fluid circulation, and the electromagnetism terminal is connect with the lower cover.
2. MR damper according to claim 1, which is characterized in that the electromagnetism terminal includes magnetic circuit part and line
Circle, the wire head of the coil are pierced by by electromagnetism terminal center from the lower cover.
3. MR damper according to claim 1 or 2, which is characterized in that the piston includes piston rod and piston
Head；Wherein,
The piston rod is arranged vertically on the piston head, and the inner sidewall of the piston head and the inner cylinder is in clearance fit,
The piston rod passes through the upper end cover.
4. MR damper according to claim 3, which is characterized in that the piston rod by bearing and sealing element with
The upper end cover connection.
5. MR damper according to claim 3 or 4, which is characterized in that the piston head is interior with the inner cylinder
Several layers sealing ring is equipped between side wall.
6. MR damper according to any one of claim 3 to 5, which is characterized in that the upper cover of piston rod is set
There is buffer unit.
7. MR damper according to any one of claim 1 to 6, which is characterized in that on the electromagnetism terminal with
The bar portion structure of lower cover connection is equipped with buffer unit.
8. MR damper according to claim 6 or 7, which is characterized in that the buffer unit includes rubber buffer
Pad.
9. MR damper according to any one of claim 1 to 8, which is characterized in that the upper end cover and described
Lower cover is connect with the mode that the inner cylinder and the outer cylinder are all made of threaded connection.
10. MR damper according to any one of claim 1 to 9, which is characterized in that the electromagnetism terminal and institute
Lower cover is stated to connect by the way of being threadedly coupled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810813284.4A CN108930752A (en) | 2018-07-23 | 2018-07-23 | A kind of MR damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810813284.4A CN108930752A (en) | 2018-07-23 | 2018-07-23 | A kind of MR damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108930752A true CN108930752A (en) | 2018-12-04 |
Family
ID=64444225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810813284.4A Pending CN108930752A (en) | 2018-07-23 | 2018-07-23 | A kind of MR damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108930752A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826903A (en) * | 2019-02-13 | 2019-05-31 | 杨泽达 | Set channel MR damper in a kind of bottom of band sedimentation Active dispersion devices |
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|---|---|---|---|---|
| CN1482378A (en) * | 2003-07-24 | 2004-03-17 | 上海交通大学 | Construction variable straight magnetic current flowing deforming brake |
| CN101804719B (en) * | 2010-03-25 | 2012-01-04 | 浙江博玛数码电子有限公司 | Vibration-adsorption structure of carving knife of digital wide-width electronic carving machine |
| CN102003491B (en) * | 2009-09-03 | 2012-09-05 | 重庆仪表材料研究所 | Electromagnetic double-cylinder magneto-rheological damper |
| KR20130002114A (en) * | 2011-06-28 | 2013-01-07 | 엘지전자 주식회사 | A damper for washing machine |
| CN203641377U (en) * | 2014-01-14 | 2014-06-11 | 株洲时代新材料科技股份有限公司 | Straight magneto-rheological damper with adjustable damping force |
| CN204553671U (en) * | 2015-04-20 | 2015-08-12 | 中国人民解放军装甲兵工程学院 | Double barreled MR damper |
| CN104595412B (en) * | 2015-01-08 | 2016-08-24 | 重庆材料研究院有限公司 | Double-barrel structure magneto-rheological vibration damper based on flow pattern |
-
2018
- 2018-07-23 CN CN201810813284.4A patent/CN108930752A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1482378A (en) * | 2003-07-24 | 2004-03-17 | 上海交通大学 | Construction variable straight magnetic current flowing deforming brake |
| CN102003491B (en) * | 2009-09-03 | 2012-09-05 | 重庆仪表材料研究所 | Electromagnetic double-cylinder magneto-rheological damper |
| CN101804719B (en) * | 2010-03-25 | 2012-01-04 | 浙江博玛数码电子有限公司 | Vibration-adsorption structure of carving knife of digital wide-width electronic carving machine |
| KR20130002114A (en) * | 2011-06-28 | 2013-01-07 | 엘지전자 주식회사 | A damper for washing machine |
| CN203641377U (en) * | 2014-01-14 | 2014-06-11 | 株洲时代新材料科技股份有限公司 | Straight magneto-rheological damper with adjustable damping force |
| CN104595412B (en) * | 2015-01-08 | 2016-08-24 | 重庆材料研究院有限公司 | Double-barrel structure magneto-rheological vibration damper based on flow pattern |
| CN204553671U (en) * | 2015-04-20 | 2015-08-12 | 中国人民解放军装甲兵工程学院 | Double barreled MR damper |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826903A (en) * | 2019-02-13 | 2019-05-31 | 杨泽达 | Set channel MR damper in a kind of bottom of band sedimentation Active dispersion devices |
| CN109826903B (en) * | 2019-02-13 | 2024-06-07 | 杨泽达 | Bottom channel magneto-rheological damper with sedimentation active dispersing device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20181204 |