CN107630968A - Damper based on MR damper - Google Patents
Damper based on MR damper Download PDFInfo
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- CN107630968A CN107630968A CN201711148701.XA CN201711148701A CN107630968A CN 107630968 A CN107630968 A CN 107630968A CN 201711148701 A CN201711148701 A CN 201711148701A CN 107630968 A CN107630968 A CN 107630968A
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- damper
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- magnet coil
- housing
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Abstract
The invention discloses the damper based on MR damper, including housing, the upper end cover that is connected to the connection ring of housing upper end, is arranged on housing upper, be arranged on the bottom end cover of lower housing portion, be arranged in housing and sealed set damped cylinder and piston, filled with magnetic flow liquid in the damped cylinder, multiple montants parallel with piston rod are vertically arranged with the damped cylinder, multiple through holes are circumferentially provided with along axis on the piston body, the montant is fixedly connected through through hole with damped cylinder top and bottom lid；The annular gap for being available for magnetic flow liquid to flow up and down is formed between the montant and through hole；Damp channel area is improved, obtains larger damping force.Damper provided by the invention based on MR damper, simple in construction, the area of damp channel is larger, produces larger damping force.
Description
Technical field
The invention belongs to mechanical oscillatory structure control technology field, and in particular to the damper based on MR damper.
Background technology
The internal shock absorber structure filled with magnetic flow liquid is simple, small volume, fast response time, excellent in durability, damping force
Big and continuously adjustabe, it is a kind of typical controlled fluid damper, is suitable as structural vibration control and vehicle suspension system
The actuator of vibration control.MR vibration damper is typically controlled using half active mode, it is easy to accomplish, and control effect
Preferably, so having certain superiority in damper control.
The MR damper used, whether shearing, squash type or valve type, the damping of magnetic flow liquid are invented at present
Passage mainly has inside magnet coil and two kinds of forms between magnet coil and cylinder body, and damp channel is in magnet coil and cylinder body
Between, it is desirable to damp channel diameter is as far as possible small, could obtain larger damping force, but the diameter of damp channel is smaller, then manufactures
Cost is higher, and the damp channel of damper is necessary for ferrimagnet and is made, and otherwise the magnetic circuit of damp channel can not close, resistance
Buddhist nun's device cannot work.Simultaneously as the flow direction of magnetic flow liquid can produce the damping force of maximum, but magnetic with magnetic direction when vertical
Rheology liquid and magnetic direction are vertical, just reduce the reduction of magnetic flow liquid chaining area, it is impossible to produce big damping force.
The content of the invention
The existing MR vibration damper damp channel cost of pin of the present invention is high, area is small, magnet coil sealing effectiveness is poor asks
Topic, there is provided a kind of simple in construction, damping force is big, the damper based on MR damper of magnet coil good sealing effect.
The present invention is achieved through the following technical solutions：Damper based on MR damper, including housing, it is connected to shell
The connection ring of body upper end, the upper end cover for being arranged on housing upper, the bottom end cover for being arranged on lower housing portion, be arranged in housing and
The damped cylinder and piston of sealed set, it is characterised in that：The piston includes hollow piston rod and under piston rod
The piston body at end；The piston rod is provided with sealing ring and shading ring for sealing with damped cylinder junction；The piston body
It is arranged in damped cylinder；Filled with magnetic flow liquid in the damped cylinder, it is vertically arranged with and multiple is put down with piston rod in the damped cylinder
Capable montant, be circumferentially provided with multiple through holes along axis on the piston body, the montant through through hole and damped cylinder upper end and
Bottom end cover connects as one；；The annular gap for being available for magnetic flow liquid to flow up and down is formed between the montant and through hole；The work
Magnet coil is provided with cock body side wall, the wire guide communicated with piston rod, the magnet coil are provided with the piston body
Pass through wire external power supply.
When plant equipment shakes, electric current passes through wire transmission to magnet coil.Magnetic flow liquid below piston body
It is squeezed and is flowed up by the annular gap between montant and through hole, in the presence of electric current, magnet coil and damped cylinder side
Wall magnetic conductive material layer forms the magnet-wire loop of closing, when magnetic flow liquid passes through gap, the moment increase in the presence of magnet-wire loop
Viscosity, hinder magnetic flow liquid to flow up, slow down piston body and move down, reach damping effect.By between montant and through hole
Socket form annular gap, increase the area of damp channel, reduce the diameter of damp channel, while it is logical to reduce damping
The difficulty of processing in road, improves damping force, reaches good damping effect.
Further, the magnet coil is included by wire connection and the first magnet coil being coaxially disposed and the second electricity
Magnetic coil, first magnet coil and the second magnet coil are separately positioned in the piston body sidewall of montant both sides, further
Magnetic field intensity, increase damping force, improve damping effect.
The piston body interior is provided with magnet coil, the magnet coil include setting from outside to inside successively around
Line, ring shielding layer and FERRITE CORE.
Further, the piston-rod lower end sets the connecting portion being connected with piston body, and the connecting portion includes being arranged on
The multistage boss shunk step by step of piston-rod lower end and the threaded rod for being arranged on multistage boss lower end, the piston body upper surface
Middle part is provided with the multistage concave station coordinated with multistage boss and the screwed hole with shaft；The piston rod passes through
Multistage boss and threaded rod are tightly connected with piston block, reach good sealing effectiveness.
Further, the 4th sealing ring is provided with the multistage concave station of the piston body upper surface, further improves sealing
Effect, prevent magnetic flow liquid from penetrating into piston block.
Further, damping spring is arranged between the housing and damped cylinder, the damping spring upper end is fixed on
End cap lower surface, the damping spring lower end are fixed on lower end cap upper surface, increase the damping effect of damper, are lost in damper
During effect, damping effect is supplemented, avoids damping entirely ineffective.
Further, the annular gap formed between the montant and through hole is 2 ~ 4mm.
The present invention compared with prior art, has advantages below and beneficial effect：
Damper provided by the present invention based on MR damper uses to be set in multiple through holes and damped cylinder on piston body
It is vertically arranged multiple montants through through hole and forms the annular gap that magnetic flow liquid can be made to flow up and down as damp channel, structure
Simply, the area of damp channel is larger, produces larger damping force.
The present invention is tightly connected using piston rod by multistage boss and screw rod with piston body, and is set in multistage boss
Sealing ring, junction between piston body and piston rod is repeatedly bent, reduce the possibility that magnetic flow liquid is penetrated into piston body, reach
To good sealing effectiveness, while the hollow hole in piston rod connects in inside screw with the wire guide in piston body, avoids
Hollow hole permeates with piston body junction magnetic flow liquid.
Brief description of the drawings
Fig. 1 is structure sectional view of the present invention；
Fig. 2 is structure partial sectional view of the present invention；
Fig. 3 is inventive piston body A-A faces sectional view；
Wherein：1-housing, 2-connection ring, 3-damped cylinder, 4-upper end cover, 5-bottom end cover, 6-damping spring, 7-electromagnetism
Coil, 8-montant, 9-piston rod, 10-magnetic flow liquid, 11-through hole, 12-piston body, 13-shading ring, 14-sealing
Circle, 15-wire, 16-multistage boss, 17-threaded rod, the 71-the first magnet coil, the 72-the second magnet coil.
Embodiment
The present invention is described in further detail with reference to embodiment, but the implementation of the present invention is not limited to this.
Embodiment 1
As shown in Figure 1 and Figure 2, the damper based on MR damper, including housing 1, the connection ring for being connected to the upper end of housing 1
2nd, be arranged on the upper end cover 4 on the top of housing 1, be arranged on the bottom end cover 5 of the bottom of housing 1, be arranged in housing 1 and sealed set
Damped cylinder 3 and piston, it is characterised in that：The piston includes hollow piston rod 9 and the work installed in the lower end of piston rod 9
Cock body 12；The piston rod 9 is provided with sealing ring 14 and shading ring 13 for sealing with the junction of damped cylinder 3；The piston
Body 12 is arranged in damped cylinder 3；Filled with magnetic flow liquid 10 in the damped cylinder 3, be vertically arranged with the damped cylinder 3 it is multiple with
The parallel montant 8 of piston rod 9, multiple through holes 11 is circumferentially provided with along axis on the piston body 12, the montant 8 passes through through hole
11 connect as one with the top and bottom lid 5 of damped cylinder 3；Formed and be available on magnetic flow liquid 10 between the montant 8 and through hole 11
The annular gap of lower flowing；The first magnet coil 71 and second is coaxially arranged with the side wall of piston body 12 of the both sides of montant 8
Magnet coil 72, the hole of wire 15 communicated with piston rod 9, first magnet coil 71 and are provided with the piston body 12
Two magnet coils 72 are by passing the external power supply of wire 15 in the hole of wire 15.The interior of piston body 12 is provided with electromagnetic wire
Circle 7, the magnet coil 7 include coiling, ring shielding layer and the FERRITE CORE set from outside to inside successively.
When plant equipment shakes, electric current is transferred to magnet coil 7 by wire 15.The magnetic current of the lower section of piston body 12
Change liquid 10 is squeezed to be flowed up by the annular gap between montant 8 and through hole 11, in the presence of electric current, magnet coil 7
The magnet-wire loop of closing, when magnetic flow liquid 10 passes through gap, the work in magnet-wire loop are formed with the side wall magnetic conductive material layer of damped cylinder 3
With increased viscosity of lower moment, hinder magnetic flow liquid 10 to flow up, slow down piston body 12 and move down, reach damping effect.It is logical
The socket crossed between montant 8 and through hole 11 forms annular gap, increases the area of damp channel, reduces the straight of damp channel
Footpath, while the difficulty of processing of damp channel is reduced, damping force is improved, reaches good damping effect.
Embodiment 2
The present embodiment is improved on the basis of embodiment 1, and it is theed improvement is that：As shown in Figure 2 and Figure 3, the piston
The lower end of bar 9 sets the connecting portion that is connected with piston body 12, and the connecting portion is including being arranged on shrinking step by step for the lower end of piston rod 9
Multistage boss 16 and the threaded rod 17 for being arranged on the multistage lower end of boss 16, the upper surface middle part of piston body 12 are provided with
The multistage concave station coordinated with multistage boss 16 and the screwed hole coordinated with threaded rod 17；The piston rod 9 passes through multistage boss
16 and threaded rod 17 and piston block be tightly connected, reach good sealing effectiveness.
The 4th sealing ring 14 is provided with the multistage concave station of the upper surface of piston body 12, further improves sealing effectiveness,
Prevent magnetic flow liquid 10 from penetrating into piston block.
Damping spring 6 is arranged between the housing 1 and damped cylinder 3, the upper end of damping spring 6 is fixed on upper end
The lower surface of lid 4, the lower end of damping spring 6 are fixed on the upper surface of bottom end cover 5, increase the damping effect of damper, in damper
During failure, damping effect is supplemented, avoids damping entirely ineffective.
The annular gap formed between the montant 8 and through hole 11 is 2 ~ 4mm.
Other parts are substantially the same manner as Example 1 in the present embodiment, therefore no longer repeat one by one.
It is described above, be only presently preferred embodiments of the present invention, any formal limitation not done to the present invention, it is every according to
Any simply modification, the equivalent variations made according to the technical spirit of the present invention to above example, each fall within the protection of the present invention
Within the scope of.
Claims (7)
1. the damper based on MR damper, including housing（1）, be connected to housing（1）The connection ring of upper end（2）, set
In housing（1）The upper end cover on top（4）, be arranged on housing（1）The bottom end cover of bottom（5）, be arranged on housing（1）Interior and sealing
The damped cylinder of setting（3）And piston, it is characterised in that：The piston includes hollow piston rod（9）And installed in piston rod
（9）The piston body of lower end（12）；The piston rod（9）With damped cylinder（3）Junction is provided with the sealing ring for sealing（14）
And shading ring（13）；The piston body（12）It is arranged on damped cylinder（3）It is interior；The damped cylinder（3）It is interior filled with magnetic flow liquid（10）,
The damped cylinder（3）Inside it is vertically arranged with multiple and piston rod（9）Parallel montant（8）, the piston body（12）On along axis
It is circumferentially provided with multiple through holes（11）, the montant（8）Through through hole（11）With damped cylinder（3）Top and bottom lid（5）It is fixed
Connection；The montant（8）With through hole（11）Between formed be available for magnetic flow liquid（10）The annular gap flowed up and down；The piston
Body（12）Magnet coil is provided with side wall（7）, the piston body（12）Inside it is provided with and piston rod（9）The wire communicated（15）
Hole, the magnet coil（7）Pass through wire（15）External power supply.
2. the damper according to claim 1 based on MR damper, it is characterised in that：The magnet coil（7）
Including passing through wire（15）The first magnet coil for connecting and being coaxially disposed（71）With the second magnet coil（72）, first electricity
Magnetic coil（71）With the second magnet coil（72）It is separately positioned on montant（8）The piston body of both sides（12）In side wall.
3. the damper according to claim 1 based on MR damper, it is characterised in that：First magnet coil
（71）With the second magnet coil（72）Include coiling, ring shielding layer and the FERRITE CORE set from outside to inside successively.
4. the damper according to claim 1 based on MR damper, it is characterised in that：The piston rod（9）Under
End is set and piston body（12）The connecting portion of connection, the connecting portion include being arranged on piston rod（9）Step by step shrink lower end
Multistage boss（16）And it is arranged on multistage boss（16）The threaded rod of lower end（17）, the piston body（12）Upper surface pars intermedia
Position is provided with and multistage boss（16）The multistage concave station and and threaded rod of cooperation（17）The screwed hole of cooperation；The piston rod
（9）Pass through multistage boss（16）And threaded rod（17）It is tightly connected with piston block.
5. the damper according to claim 1 based on MR damper, it is characterised in that：The piston body（12）On
The 4th sealing ring is provided with the multistage concave station on surface（14）.
6. the damper according to claim 1 based on MR damper, it is characterised in that：The housing（1）With resistance
Buddhist nun's cylinder（3）Between be arranged with damping spring（6）, the damping spring（6）Upper end is fixed on upper end cover（4）Lower surface, it is described to subtract
Shake spring（6）Lower end is fixed on bottom end cover（5）Upper surface.
7. the damper based on MR damper according to any one of claim 1 ~ 6, it is characterised in that：The montant
（8）With through hole（11）Between the annular gap that is formed be 2 ~ 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711148701.XA CN107630968A (en) | 2017-11-17 | 2017-11-17 | Damper based on MR damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711148701.XA CN107630968A (en) | 2017-11-17 | 2017-11-17 | Damper based on MR damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107630968A true CN107630968A (en) | 2018-01-26 |
Family
ID=61108711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711148701.XA Pending CN107630968A (en) | 2017-11-17 | 2017-11-17 | Damper based on MR damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107630968A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412943A (en) * | 2018-03-28 | 2018-08-17 | 辽宁机电职业技术学院 | A kind of damp can be changed automotive suspension damper and its control method |
| CN108756410A (en) * | 2018-05-29 | 2018-11-06 | 东南大学 | A kind of self-centering viscous damper of precompressed ring spring |
| CN109372934A (en) * | 2018-11-18 | 2019-02-22 | 刘山平 | A kind of automobile-use MR vibration damper |
| CN109798317A (en) * | 2019-03-05 | 2019-05-24 | 河南科技大学 | A kind of agricultural machinery damping device based on magnetorheological fluid |
| CN113606275A (en) * | 2021-05-25 | 2021-11-05 | 上海应用技术大学 | Novel magnetorheological elastomer shock absorber |
-
2017
- 2017-11-17 CN CN201711148701.XA patent/CN107630968A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412943A (en) * | 2018-03-28 | 2018-08-17 | 辽宁机电职业技术学院 | A kind of damp can be changed automotive suspension damper and its control method |
| CN108756410A (en) * | 2018-05-29 | 2018-11-06 | 东南大学 | A kind of self-centering viscous damper of precompressed ring spring |
| CN109372934A (en) * | 2018-11-18 | 2019-02-22 | 刘山平 | A kind of automobile-use MR vibration damper |
| CN109372934B (en) * | 2018-11-18 | 2020-07-31 | 浙江煜焰工业设计有限公司 | Magnetorheological damper for motor vehicle |
| CN109798317A (en) * | 2019-03-05 | 2019-05-24 | 河南科技大学 | A kind of agricultural machinery damping device based on magnetorheological fluid |
| CN109798317B (en) * | 2019-03-05 | 2024-02-13 | 河南科技大学 | Damping device for agricultural machine based on magnetorheological fluid |
| CN113606275A (en) * | 2021-05-25 | 2021-11-05 | 上海应用技术大学 | Novel magnetorheological elastomer shock absorber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180126 |
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| WD01 | Invention patent application deemed withdrawn after publication |