CN207795959U - A kind of lower-speed state can keep the MR damper of riding comfort - Google Patents
A kind of lower-speed state can keep the MR damper of riding comfort Download PDFInfo
- Publication number
- CN207795959U CN207795959U CN201820144394.1U CN201820144394U CN207795959U CN 207795959 U CN207795959 U CN 207795959U CN 201820144394 U CN201820144394 U CN 201820144394U CN 207795959 U CN207795959 U CN 207795959U
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- CN
- China
- Prior art keywords
- spool
- end cap
- damper
- right end
- left end
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Abstract
The utility model discloses the MR dampers that a kind of lower-speed state can keep riding comfort.Mainly it is made of piston rod, attenuator end cap, damper cylinder body, flux ring, left spool, right spool and magnet exciting coil etc..There are three equally distributed waist typed through hole for processing respectively on spool left end cap and spool right end cap；On left spool and right spool respectively processing there are four slit, the slit on left spool and right spool on the same axis, to increase the section of shear of liquid stream damp channel.Under the premise of not increasing exciting current size, ensure that damper can export sufficiently large damping force, while will not result in blockage because damping clearance is too narrow；Make that damper performance is more stable, damping force adjustable extent increases, the damping force of bigger is obtained when automobile being made to run at a low speed, vibration is effectively reduced, improves the riding comfort of driver.The utility model MR damper is especially suitable for the industries vibration insulating system such as machinery, military project, railway traffic.
Description
Technical field
The utility model is related to a kind of MR dampers more particularly to a kind of lower-speed state can keep riding comfort
MR damper.
Background technology
MR damper (Magnetorheological damper) is that one kind based on magnetorheological fluid controllable characteristics is new
The characteristics of type semi-active damper device, Millisecond response speed, big control range and big damping force export so that it becomes work
Half outstanding active actuators part of industry application field.MR damper is in the vibration damping antidetonation system of building and bridge at present
Vibration damping of system, rail vehicles and automobile suspension system etc. obtains extensive use.
With the rapid development of auto industry and the improvement of road traffic condition, Automobile Design increasingly lightweight and height
Speedization.In general, the suspension arrangement between vehicle body and wheel can improve driver comfort.But when automobile travels on road
When less than a certain critical speed or having external interference (such as road bumps, wheel tremble, treadwear), if this phenomenon is always
In the presence of being easy to make driver to generate fatigue, the driving safety of automobile is seriously affected, and traveling can cause parts depreciation for a long time, from
And reduce automotive service life.
The appearance of magnetorheological fluid brings new thinking, rheology of the magnetorheological fluid under magnetic fields to above-mentioned problem is solved
Characteristic is that moment is reversible, and the shear yield strength after its rheology has stable correspondence with magnetic field intensity.Magnetic current
Becoming liquid under magnetic fields, the yield strength for flowing through the magnetorheological fluid of fluid course changes, to export controllable damping force,
And the shear yield strength of magnetorheological fluid can be changed by controlling magnetic field intensity, realize the nothing of MR damper damping force
Grade is adjusted.When magnetic rheological liquid damper is applied to automotive suspension, damping effect can be effectively played, therefore designs one kind low
Fast transport condition can keep the MR damper of riding comfort to have broad application prospects.
Invention content
Demand, the utility model are actually used in order to solve the problems, such as background technology and meet MR damper
It is proposed that a kind of lower-speed state can keep the MR damper of riding comfort.Add respectively on spool left end cap and spool right end cap
There are three equally distributed waist typed through hole for work；There are four slit, left spool and right spools for processing respectively on left spool and right spool
On slit on the same axis, magnetorheological fluid flows through the section of shear that slit increases liquid stream damp channel.Not
Under the premise of increasing exciting current size, ensure that damper can export sufficiently large damping force, while will not be because of damping clearance
It is too narrow and result in blockage；Make that damper performance is more stable, damping force adjustable extent increases, bigger is obtained when automobile being made to run at a low speed
Damping force, effectively reduce vibration, improve the riding comfort of driver.
Technical solution includes used by the utility model solves its technical problem：Left lifting lug (1), piston rod (2), damping
Device left end cap (3), damper cylinder body (4), left spool (5), flux ring (6), right spool (7), floating piston (8), damper are right
End cap (9), right lifting lug (10), fastening nut (11), spool right end cap (12), magnet exciting coil (13) and spool left end cap (14)；
It is machined with internal thread hole among left lifting lug (1) right end；Piston rod (2) is processed into a ladder, is added respectively outside left end and right end
Work has external screw thread；Left lifting lug (1) right end and piston rod (2) left end are threadably secured connection；Damper left end cap (3) and damping
Device cylinder body (4) is sealed by sealing ring, and is fixedly connected by screw；It is machined with circular through hole among damper left end cap (3),
Piston rod (2) coordinates with damper left end cap (3) circular through hole internal surface gaps, and is sealed by a seal ring；Spool is left
End cap (14), left spool (5), right spool (7) and spool right end cap (12) are machined with central through hole respectively, table in central through hole
Face with piston rod (2) right end outer surface clearance fit；Spool left end cap (14) passes on left shoulder on the right side of piston rod (2) and carries out
Axially position；Circular through hole is machined among flux ring (6), left and right sides end face is machined with annulus stepped groove；Magnetic flux
Stepped groove carries out axially position by spool left end cap (14) right end face on the left of ring (6)；Left spool (5) passes on left valve
Axially position is carried out on the right side of core left end cap (14)；It is axial by being carried out on the left of the stepped groove of flux ring (6) on the right side of left spool (5)
Positioning；Right spool (7) passes on left stepped groove on the right side of flux ring (6) and carries out axially position；Right spool (7) right end face is logical
It crosses and carries out axially position on the left of spool right end cap (12)；Left spool (5) right side, right spool (7) left side and piston rod (2) right end
External peripheral surface surrounds toroidal cavity, and magnet exciting coil (13) is wrapped in toroidal cavity；Left spool (5) and right spool (7)
Upper processing respectively is there are four slit, and the slit of left spool (5) and right spool (7) is on the same axis；Ladder on the right side of flux ring (6)
Type groove carries out axially position by spool right end cap (12) left end face；Spool left end cap (14), left spool (5), flux ring
(6), right spool (7) and spool right end cap (12) are locked by fastening nut (11) axial restraint；Floating piston (8) circumferential outer surface
Face and damper cylinder body (4) circumferential inner surface clearance fit, and be sealed by a seal ring；Piston rod (2) and left lifting lug (1)
It is machined with fairlead, the lead of magnet exciting coil (13) passes sequentially through above-mentioned fairlead and draws；Damper right end cap (9) and damping
Device cylinder body (4) is fixedly connected by screw, and is sealed by a seal ring；It is machined with internal thread among right lifting lug (10) left end
Hole；Damper right end cap (9) is connect with right lifting lug (10) by screw threads for fastening.
The utility model compared with the background art, has an advantageous effect in that：
（1）The utility model devises slot configurations on left spool and right spool, effectively increases cutting for fluid course
Section is accumulated, and under the premise of not increasing exciting current size, is increased the utilization rate in the magnetic field at liquid stream damping clearance, be ensure that
Damper can export sufficiently large damping force.It will not result in blockage simultaneously because damping clearance is too narrow；Make damper performance more
Stablize, the damping force of bigger is can get when automobile is run at a low speed, vibration is effectively reduced, improves the riding comfort of driver.
（2）The magnet exciting coil of the utility model is wrapped in left spool right side, right spool left side and piston rod right end outer circle
Perimeter surface surrounds in toroidal cavity, avoids traditional MR damper magnet exciting coil and is wrapped on piston head and causes damping force
The small deficiency of adjustable extent.The utility model MR damper is compact-sized and small, especially suitable for railway, automobile,
The isostructural vibration damping vibration prevention system of bridge.
Description of the drawings
Fig. 1 is the utility model structure diagram.
Fig. 2 is the utility model spool left end cap right view.
Fig. 3 is the utility model spool schematic three dimensional views.
Fig. 4 is the utility model magnetic line of force distribution schematic diagram.
Specific implementation mode
Fig. 1 is the utility model structure diagram.Include mainly left lifting lug (1), piston rod (2), damper left end cap
(3), damper cylinder body (4), left spool (5), flux ring (6), right spool (7), floating piston (8), damper right end cap (9),
Right lifting lug (10), fastening nut (11), spool right end cap (12), magnet exciting coil (13) and spool left end cap (14).
Fig. 2 is the utility model spool left end cap right view.There are three equally distributed waists for spool left end cap (14) processing
Type through-hole, magnetorheological fluid flow into valve core inside by waist typed through hole.
Fig. 3 is the utility model spool schematic three dimensional views.Spool left end cap (14), left spool (5), flux ring (6), excitation
Coil (13), right spool (7) and spool right end cap (12) are combined into the spool of the utility model.In left spool (5) and right valve
Core (7) processes four rectangular slots respectively, and the slit of left spool (5) and right spool (7) is on the same axis.Spool intermediate groove
Magnet exciting coil (13) is wound, magnetorheological fluid can be flowed by slit.
Fig. 4 is the magnetic line of force distribution schematic diagram that the utility model coil is passed through electric current.Left spool (5), flux ring (6), the right side
Spool (7), piston rod (2) are made outside of mild steel permeability magnetic material respectively, and remaining parts are made of un-conducted magnetic material.When to encouraging
When magnetic coil (13) is passed through electric current, the magnetic line of force that electromagnetic induction phenomenon generates passes through left spool (5), flux ring (6), right valve successively
Core (7) and piston rod (2) form closed circuit.
Utility model works principle is as follows：
When being passed through a certain size electric current to magnet exciting coil (13), due to what is processed on left spool (5) and right spool (7)
The presence of slit increases the length of effective damping clearance channel so that magnetic line of force active area increases, and the utilization in magnetic field
Rate also accordingly increases, and to make yield stress also increase therewith, larger output damping force can be kept under smaller electric current, is made
Riding comfort is further increased under low vehicle speeds.
Claims (1)
1. a kind of lower-speed state can keep the MR damper of riding comfort, it is characterised in that：Including left lifting lug (1), live
Stopper rod (2), damper left end cap (3), damper cylinder body (4), left spool (5), flux ring (6), right spool (7), floating piston
(8), damper right end cap (9), right lifting lug (10), fastening nut (11), spool right end cap (12), magnet exciting coil (13) and spool
Left end cap (14)；It is machined with internal thread hole among left lifting lug (1) right end；Piston rod (2) is processed into a ladder, left end and right end
Outside is machined with external screw thread respectively；Left lifting lug (1) right end and piston rod (2) left end are threadably secured connection；Damper left end
Lid (3) is sealed with damper cylinder body (4) by sealing ring, and is fixedly connected by screw；Processing among damper left end cap (3)
There is circular through hole, piston rod (2) coordinates with damper left end cap (3) circular through hole internal surface gaps, and is carried out by sealing ring
Sealing；Spool left end cap (14), left spool (5), right spool (7) and spool right end cap (12) are machined with central through hole respectively,
Central through hole inner surface with piston rod (2) right end outer surface clearance fit；Spool left end cap (14) passes on left piston rod (2)
Right side shoulder carries out axially position；Circular through hole is machined among flux ring (6), left and right sides end face is machined with annulus ladder
Connected in star；Stepped groove carries out axially position by spool left end cap (14) right end face on the left of flux ring (6)；Left spool
(5) it passes on left and carries out axially position on the right side of spool left end cap (14)；It is stepped recessed by flux ring (6) on the right side of left spool (5)
Axially position is carried out on the left of slot；Right spool (7) passes on left stepped groove on the right side of flux ring (6) and carries out axially position；Right valve
Core (7) right end face is by carrying out axially position on the left of spool right end cap (12)；On the right side of left spool (5), on the left of right spool (7) with
And piston rod (2) right end external peripheral surface surrounds toroidal cavity, magnet exciting coil (13) is wrapped in toroidal cavity；Left spool
(5) and on right spool (7) slit of slit there are four processing respectively, left spool (5) and right spool (7) is on the same axis；Magnetic
Stepped groove carries out axially position by spool right end cap (12) left end face on the right side of logical ring (6)；Spool left end cap (14), a left side
Spool (5), flux ring (6), right spool (7) and spool right end cap (12) are locked by fastening nut (11) axial restraint；It floats
Piston (8) circumferential outer surface and damper cylinder body (4) circumferential inner surface clearance fit, and be sealed by a seal ring；Piston
Bar (2) and left lifting lug (1) are machined with fairlead, and the lead of magnet exciting coil (13) passes sequentially through above-mentioned fairlead and draws；Damping
Device right end cap (9) is fixedly connected with damper cylinder body (4) by screw, and is sealed by a seal ring；Right lifting lug (10) is left
End is intermediate to be machined with internal thread hole；Damper right end cap (9) is connect with right lifting lug (10) by screw threads for fastening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820144394.1U CN207795959U (en) | 2018-01-29 | 2018-01-29 | A kind of lower-speed state can keep the MR damper of riding comfort |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820144394.1U CN207795959U (en) | 2018-01-29 | 2018-01-29 | A kind of lower-speed state can keep the MR damper of riding comfort |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207795959U true CN207795959U (en) | 2018-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820144394.1U Expired - Fee Related CN207795959U (en) | 2018-01-29 | 2018-01-29 | A kind of lower-speed state can keep the MR damper of riding comfort |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207795959U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161017A (en) * | 2020-09-22 | 2021-01-01 | 汕头大学 | Quick response magneto-rheological damper |
| CN114458715A (en) * | 2022-01-14 | 2022-05-10 | 清华大学 | Magnetorheological damper based on surface texture |
-
2018
- 2018-01-29 CN CN201820144394.1U patent/CN207795959U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161017A (en) * | 2020-09-22 | 2021-01-01 | 汕头大学 | Quick response magneto-rheological damper |
| CN112161017B (en) * | 2020-09-22 | 2022-08-16 | 汕头大学 | Quick response magneto-rheological damper |
| CN114458715A (en) * | 2022-01-14 | 2022-05-10 | 清华大学 | Magnetorheological damper based on surface texture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180831 Termination date: 20220129 |
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| CF01 | Termination of patent right due to non-payment of annual fee |