CN105782327A - Magneto-rheological damper with effective full-damping channel - Google Patents
Magneto-rheological damper with effective full-damping channel Download PDFInfo
- Publication number
- CN105782327A CN105782327A CN201610271116.8A CN201610271116A CN105782327A CN 105782327 A CN105782327 A CN 105782327A CN 201610271116 A CN201610271116 A CN 201610271116A CN 105782327 A CN105782327 A CN 105782327A
- Authority
- CN
- China
- Prior art keywords
- cylinder barrel
- piston
- collecting plate
- line collecting
- damper
- 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.)
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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
Abstract
The invention discloses a magneto-rheological damper with an effective full-damping channel. The magneto-rheological damper comprises a damper cylinder barrel and a piston body; piston rods extending out of end covers of the damper cylinder barrel are installed at the two ends of the piston body; wire concentration plates A are symmetrically arranged at the upper portion and the lower portion of the piston body, straight wires A which are evenly distributed in the peripheral direction of the piston body are connected between the outer edges of the two wire concentration plates A, and two total inner wires connected with the two wire concentration plates A are led out from wire leading-out holes in the piston rods; wire concentration plates B are symmetrically arranged in end covers of the two ends of the damper cylinder barrel, straight wires B which are evenly distributed in the peripheral direction of the damper cylinder barrel are connected between the outer edges of the two wire concentration plates B, and two total outer wires connected with the two wire concentration plates B extend out from the end covers; and space among the damper cylinder barrel, the piston rods and the piston body is filled with magneto-rheological fluid, and an annular gap between the damper cylinder barrel and the piston body is the damping channel. By means of the magneto-rheological damper, the overall-length effective damping channel is achieved, and the maximum output of the magneto-rheological damper is improved to the greatest degree.
Description
Technical field
The invention belongs to damping vibration attenuation technical field, relate to a kind of MR damper, especially relate to a kind of full damping channel valid MR damper.
Background technology
MR damper has the feature of Millisecond response speed, big span of control and big damping force output, it has also become the half active actuators part that industrial application is outstanding.At present, MR damper is used widely in vibration damping of the vibration damping vibration prevention system of building and bridge, rail vehicles and automobile suspension system etc..
MR damper is a kind of semi-automatic control device utilizing magnetic flow liquid to realize liquid-solid two-phase inversion characteristic within the short time (Millisecond) under the influence of a magnetic field and manufacturing.Stress according to fluid and the difference of flow feature, MR damper is broadly divided into valve type, shearing, extrusion flow dynamic formula and shearing valve type, wherein shearing valve type magneto-rheological antivibrator because its version is simple, exert oneself big and be used widely.According to Bingham flat plate model, the EIAJ of MR damper is directly proportional with the effective length of damp channel, and when damp channel total length one timing, effective length is more big, and the EIAJ of MR damper is more big.But, tradition shearing valve type magneto-rheological antivibrator offers groove on piston, magnet exciting coil it is wound around in groove, due to the restriction of diameter of wire and the number of turn in magnet exciting coil, groove generally accounts for more than the 1/2 of piston total length, owing to the damp channel of winding magnet exciting coil groove part is without magnetic field, therefore it is inefficient length, not only increasing the volume and weight of antivibrator, and reduce the EIAJ of MR damper, EIAJ loss is about 50%.
Summary of the invention
In order to solve the problems referred to above, it is an object of the invention to provide that a kind of reasonable in design is compact, damping good, the full damping channel valid MR damper of long service life, it can reduce the volume and weight of MR damper, increases the EIAJ of MR damper.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of full damping channel valid MR damper, it includes antivibrator cylinder barrel and piston only, antivibrator cylinder barrel upper and lower side is equipped with end cap, piston only is arranged in antivibrator cylinder barrel and two ends are symmetrically installed with the piston rod stretching out antivibrator cylinder barrel two end cap respectively, the central axes of piston rod, piston only and antivibrator cylinder barrel；Piston only upper and lower part is symmetrically arranged with discoid line collecting plate A along piston only axle center, be arranged in piston only sidewall annular gap some it are connected to along the equally distributed straight parallel wire A of piston only sidewall circumferencial direction between two line collecting plate A outer rims, two-piston bar is equipped with wire fairlead centrally along axis direction, and the two total inside conductors being connected with two line collecting plate A respectively are drawn via the wire fairlead on piston rod；It is symmetrically arranged with circular line collecting plate B along antivibrator cylinder barrel axle center in the end cap of antivibrator cylinder barrel upper and lower side, being connected to some that are positioned at antivibrator cylinder barrel sidewall annular gap between two line collecting plate B outer rims along the equally distributed straight parallel wire B of antivibrator cylinder barrel sidewall circumferencial direction, the two total outer conductors being connected with two line collecting plate B respectively stretch out via end cap；Space between antivibrator cylinder barrel and piston rod, piston only forms chamber, is full of magnetic flow liquid in chamber, and the annular gap between antivibrator cylinder barrel and piston only is damp channel.
Described full damping channel valid MR damper, its line collecting plate A, line collecting plate B are double-sided insulation line collecting plate.
Described full damping channel valid MR damper, its antivibrator cylinder barrel, piston only are made by permeability magnetic material.
Described full damping channel valid MR damper, the end cap inwall of its antivibrator cylinder barrel upper and lower side offers annular groove, and circular line collecting plate B coheres in annular groove.
Owing to adopting technical scheme as above, the present invention has following superiority:
This full damping channel valid MR damper, it can produce to be perpendicular to the toroidal magnetic field of damp channel length in whole damp channel length, and the magnetic field concentration produced is positioned at damp channel, magnetic field intensity outside damp channel is very little, greatly strengthen the magnetic field intensity in damp channel, the structural design making MR damper is more rationally compact；Owing to the direction, toroidal magnetic field in damp channel is vertical with the flow direction of magnetic flow liquid, can effectively change the shear yield strength of magnetic flow liquid, it is thus achieved that damp channel overall length is effective, improve the EIAJ of MR damper to greatest extent, and reduce the volume and weight of MR damper.
Accompanying drawing explanation
Fig. 1 is with the structural representation of full damping channel valid MR damper of the present invention；
Fig. 2 is Fig. 1 " A-A " to generalized section；
Fig. 3 is the structural representation of the line collecting plate A in Fig. 1；
Fig. 4 is the structural representation of the line collecting plate B in Fig. 1；
In figure: the total outer conductor of 1-；The total inside conductor of 2-；3-wire fairlead；4-piston rod；5-end cap；6-line collecting plate B；The straight wire B of 7-；8-antivibrator cylinder barrel；The straight wire A of 9-；10-piston only；11-damp channel；12-line collecting plate A；13-chamber；14-magnetic direction；15-wiring hole A；16-wiring hole B.
Detailed description of the invention
Below by drawings and Examples, technical scheme is described in further detail.
As shown in Figure 1,2,3, 4, this full damping channel valid MR damper, it includes antivibrator cylinder barrel 8 and piston only 10, antivibrator cylinder barrel upper and lower side is fixedly connected with end cap 5 each through bolt, piston only is arranged in antivibrator cylinder barrel and two ends are symmetrically installed with the piston rod 4 stretching out antivibrator cylinder barrel two end cap respectively, piston rod and piston only are bolted to connection, the central axes of piston rod, piston only and antivibrator cylinder barrel；On piston only, bottom is symmetrically arranged with discoid line collecting plate A12 along piston only axle center, line collecting plate A diameter is slightly less than piston only diameter, two line collecting plate A outer rims have been distributed uniformly and circumferentially several wiring holes A15, some are connected in the wiring hole A on two line collecting plate A along piston only sidewall circumferencial direction equally distributed straight parallel wire A9 two ends, above-mentioned many straight wire A are positioned at the annulus that piston only sidewall is longitudinally provided with, two-piston bar is equipped with wire fairlead 3 centrally along axis direction, the two total inside conductors 2 being connected with two line collecting plate A12 respectively are via the wiring hole B16 of line collecting plate A central authorities, wire fairlead 3 on piston rod is drawn；It is symmetrically arranged with circular line collecting plate B6 along antivibrator cylinder barrel axle center in the end cap of antivibrator cylinder barrel upper and lower side, two line collecting plate B outer rims have been distributed uniformly and circumferentially several wiring holes A15, some are connected in the wiring hole A on two line collecting plate B along antivibrator cylinder barrel sidewall circumferencial direction equally distributed straight parallel wire B6 two ends, above-mentioned many straight wire B are positioned at the annulus that antivibrator cylinder barrel sidewall is longitudinally provided with, and the two total outer conductors 1 being connected with two line collecting plate B6 respectively stretch out via the wiring hole B16 on line collecting plate B, end cap 5；Space between antivibrator cylinder barrel 8 and piston rod 4, piston only 10 forms chamber 13, is full of magnetic flow liquid in chamber, and the annular gap between antivibrator cylinder barrel 8 and piston only 10 is damp channel 11.
Above-mentioned line collecting plate A, line collecting plate B are double-sided insulation line collecting plate.
Above-mentioned antivibrator cylinder barrel, piston only are made by permeability magnetic material.
The end cap inwall of above-mentioned antivibrator cylinder barrel upper and lower side offers annular groove, and circular line collecting plate B coheres in annular groove.
The operation principle of full damping channel valid MR damper of the present invention: first upper by two total inside conductors 2, lower end is respectively with DC source just, negative pole is connected, DC current is flowed into by total inside conductor on piston only 10 top, it is averaged in the straight wire A9 being assigned to piston only inner periphery directional spreding when flowing through the discoid line collecting plate A12 on piston only top, when straight wire A has electric current, the circular magnetic field centered by straight wire A will be produced in the whole length of straight wire A, owing to many straight wire A arrange along piston only peripheral annular, therefore toroidal magnetic field will be produced in the whole length of damp channel 11, electric current in straight wire A is pooled to the lower end of total inside conductor of piston only 10 bottom eventually through the line collecting plate A of piston only bottom, finally flow into the negative pole of DC source.In like manner, the two ends of two of antivibrator cylinder barrel top and the bottom total outer conductors 1 are extremely connected with the negative, positive of DC source respectively, also can produce toroidal magnetic field in the whole length of damp channel 11.Owing to straight wire A9 and straight wire B7 lays respectively at the inside and outside both sides of annular damper passage, the sense of current of input is contrary, and the magnetic direction 14 that therefore the two produces in annular damper passage is consistent, and can be overlapped mutually.When piston rod 4 in axial direction moves up and down, in damp channel 11, the flow direction of magnetic flow liquid and the direction of toroidal magnetic field are mutually perpendicular to, thus can effectively change the shear yield strength of magnetic flow liquid, achieve damp channel overall length effective, improve the EIAJ of MR damper to greatest extent, and reduce volume and the quality of MR damper.
The foregoing is only the better embodiment of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (4)
1. a full damping channel valid MR damper, including antivibrator cylinder barrel and piston only, antivibrator cylinder barrel upper and lower side is equipped with end cap, piston only is arranged in antivibrator cylinder barrel and two ends are symmetrically installed with the piston rod stretching out antivibrator cylinder barrel two end cap respectively, the central axes of piston rod, piston only and antivibrator cylinder barrel；It is characterized in that: its piston only upper and lower part is symmetrically arranged with discoid line collecting plate A along piston only axle center, be arranged in piston only sidewall annular gap some it are connected to along the equally distributed straight parallel wire A of piston only sidewall circumferencial direction between two line collecting plate A outer rims, two-piston bar is equipped with wire fairlead centrally along axis direction, and the two total inside conductors being connected with two line collecting plate A respectively are drawn via the wire fairlead on piston rod；It is symmetrically arranged with circular line collecting plate B along antivibrator cylinder barrel axle center in the end cap of antivibrator cylinder barrel upper and lower side, being connected to some that are positioned at antivibrator cylinder barrel sidewall annular gap between two line collecting plate B outer rims along the equally distributed straight parallel wire B of antivibrator cylinder barrel sidewall circumferencial direction, the two total outer conductors being connected with two line collecting plate B respectively stretch out via end cap；Space between antivibrator cylinder barrel and piston rod, piston only forms chamber, is full of magnetic flow liquid in chamber, and the annular gap between antivibrator cylinder barrel and piston only is damp channel.
2. full damping channel valid MR damper according to claim 1, is characterized in that: its line collecting plate A, line collecting plate B are double-sided insulation line collecting plate.
3. full damping channel valid MR damper according to claim 1, is characterized in that: its antivibrator cylinder barrel, piston only are made by permeability magnetic material.
4. full damping channel valid MR damper according to claim 1, is characterized in that: the end cap inwall of its antivibrator cylinder barrel upper and lower side offers annular groove, and circular line collecting plate B coheres in annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610271116.8A CN105782327B (en) | 2016-04-27 | 2016-04-27 | A kind of full damping channel valid MR damper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610271116.8A CN105782327B (en) | 2016-04-27 | 2016-04-27 | A kind of full damping channel valid MR damper |
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| CN105782327A true CN105782327A (en) | 2016-07-20 |
| CN105782327B CN105782327B (en) | 2017-11-10 |
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| CN201610271116.8A Active CN105782327B (en) | 2016-04-27 | 2016-04-27 | A kind of full damping channel valid MR damper |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799394A (en) * | 2018-07-23 | 2018-11-13 | 上海交通大学 | Dynamic vibration absorber and bump leveller group's system |
| CN115217887A (en) * | 2022-05-18 | 2022-10-21 | 李绍贵 | Hydraulic damper |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0261427A2 (en) * | 1986-09-25 | 1988-03-30 | Robert Bosch Gmbh | Bitubular shock absorber |
| US20010054529A1 (en) * | 1997-08-19 | 2001-12-27 | Norris Mclaughlin & Marcus P.A. | Valve and a shock absorber based on electrorheological liquids |
| US20020100365A1 (en) * | 2001-02-01 | 2002-08-01 | Venkatasubramanian Ananthanarayanan | Piston for magneto-rheological fluid systems and method for its manufacture |
| CN201547166U (en) * | 2009-09-10 | 2010-08-11 | 浙江吉利控股集团有限公司 | Electrorheological fluid vibration damper |
| CN205559671U (en) * | 2016-04-27 | 2016-09-07 | 郑州大学 | Effectual magneto rheological damper of absolute damping passageway |
-
2016
- 2016-04-27 CN CN201610271116.8A patent/CN105782327B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0261427A2 (en) * | 1986-09-25 | 1988-03-30 | Robert Bosch Gmbh | Bitubular shock absorber |
| US20010054529A1 (en) * | 1997-08-19 | 2001-12-27 | Norris Mclaughlin & Marcus P.A. | Valve and a shock absorber based on electrorheological liquids |
| US20020100365A1 (en) * | 2001-02-01 | 2002-08-01 | Venkatasubramanian Ananthanarayanan | Piston for magneto-rheological fluid systems and method for its manufacture |
| CN201547166U (en) * | 2009-09-10 | 2010-08-11 | 浙江吉利控股集团有限公司 | Electrorheological fluid vibration damper |
| CN205559671U (en) * | 2016-04-27 | 2016-09-07 | 郑州大学 | Effectual magneto rheological damper of absolute damping passageway |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799394A (en) * | 2018-07-23 | 2018-11-13 | 上海交通大学 | Dynamic vibration absorber and bump leveller group's system |
| CN108799394B (en) * | 2018-07-23 | 2020-02-21 | 上海交通大学 | Dynamic vibration absorber and vibration absorber group system |
| CN115217887A (en) * | 2022-05-18 | 2022-10-21 | 李绍贵 | Hydraulic damper |
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| Publication number | Publication date |
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| CN105782327B (en) | 2017-11-10 |
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Effective date of registration: 20181113 Address after: 450000 North Street, Xincun, Zhengzhou City, Henan Province Patentee after: Henan Construction Engineering Drawing Examination Center Co., Ltd. Address before: 450001 Zhengzhou University (New Campus) No. 100 Science Avenue, Zhengzhou High-tech Zone, Henan Province Patentee before: Zhengzhou University |