CN105333053A - Piston-less type large-stroke magnetorheological damper - Google Patents
Piston-less type large-stroke magnetorheological damper Download PDFInfo
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- CN105333053A CN105333053A CN201510734667.9A CN201510734667A CN105333053A CN 105333053 A CN105333053 A CN 105333053A CN 201510734667 A CN201510734667 A CN 201510734667A CN 105333053 A CN105333053 A CN 105333053A
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- field coil
- damper
- outer sleeve
- inner sleeve
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Abstract
The invention discloses a dual-extruding piston-less type large-stroke magnetorheological damper which solves the problems that the operating stroke of an existing magnetorheological damper is limited, and maintenance is difficult. The piston-less type large-stroke magnetorheological damper comprises a piston rod, a damper sleeve, a magnet exciting coil framework and a magnet exciting coil. The magnet exciting coil framework is of a cylindrical structure, a through hole is formed in the middle of the magnet exciting coil framework, and the magnet exciting coil is wound around the magnet exciting coil framework. The magnet exciting coil framework is located in the damper sleeve and fixedly connected with the inner wall of the damper sleeve. The piston rod is located on the central axis of the damper sleeve and penetrates the through hole in the middle of the magnet exciting coil framework, and the piston rod and the magnet exciting coil framework form a throttling channel. The rest of space inside the damper sleeve forms a magnetorheological fluid chamber filled with magnetorheological fluid.
Description
Technical field
The present invention relates to MR damper field, specifically a kind of without piston type Long Distances MR damper.
Background technique
Damper is a kind of the most frequently used damped appliance.Current damper is mainly piston damper, and during owing to running, the restriction of piston position, makes the working stroke of damper be hindered, and which limits stroke large, the vibration damping demand that damping is little.MR damper a kind ofly exports the controlled damper of damping, and by applying the difference of electric field, the damping force of MR damper also changes.
The MR damper that current invention uses be divided into singly go out bar-type magneto-rheological damper and two go out bar-type magneto-rheological damper, patent CN1601139A, CN2525303Y etc. for two go out bar-type magneto-rheological damper, connecting rod rushes operational hydraulic cylinder two ends and passes, and greatly reducing working stroke; Patent CN1621707A, CN1603651A are etc. for singly to go out bar-type magneto-rheological damper, need the Volume Changes that increase air bag brings to compensate connecting rod motion change, add the difficulty of sealing to a certain extent, and the specification of air bag is also subject to the impact of connecting rod diameter, thus have influence on the working stroke of MR damper.
The piston of the MR damper that current invention uses is mainly on connecting rod and outer sleeve, patent CN100548766C is that piston is on connecting rod, the diameter of ring-shaped throttling passage is comparatively large, and this design can increase the area of throttling passage, increases the damping force of MR damper to a certain extent; Patent CN102425638B is that piston is on outer sleeve, the diameter of ring-shaped throttling passage is less, the size of initial damping force when this design can reduce not loading current, can by good use on partial use, but the restriction being so subject to stroke appointed in use by this damper.The MR damper that current invention uses remains piston magneto-rheological damper, has influence on working stroke.
summary of the inventionthe object of this invention is to provide a kind of without piston type Long Distances MR damper, little to solve prior art MR damper working stroke, complex structure, magnetic flow liquid chamber comparatively greatly, the problem that the magnetic flow liquid of use is more.
In order to achieve the above object, the technical solution adopted in the present invention is:
Without piston type Long Distances MR damper, it is characterized in that: include the outer sleeve that two ends are nozzle, in the nozzle of outer sleeve two ends, co-axial seal is provided with fixing seal end cap respectively, in outer sleeve, intermediate coaxial is installed with field coil outer sleeve, field coil outer sleeve two ends are nozzle, field coil inner sleeve is coaxially arranged with in the cylinder chamber of field coil outer sleeve, field coil inner sleeve two ends are nozzle, fixing clamping plate is connected with between field coil outer sleeve and field coil inner sleeve corresponding end, by field coil outer sleeve, field coil inner sleeve, fixing clamping plate is combined to form magnetic circuit winding, and by outer sleeve, fixing seal end cap, field coil inner sleeve, between fixing clamping plate, space forms magnetic flow liquid chamber, magnetic flow liquid is full of in magnetic flow liquid chamber, field coil outer sleeve, field coil inner sleeve, field coil is provided with in space between fixing clamping plate, field coil is connected with external power supply by wire, connecting rod is coaxially arranged with in the cylinder chamber of field coil inner sleeve, after connecting rod two ends pass from field coil inner sleeve two ends nozzle respectively, pass from fixing seal end cap central again, and seal between connecting rod and fixing seal end cap and be slidably matched, ring-shaped throttling passage is formed by between connecting rod and chamber, the cylinder chamber wall of field coil inner sleeve.
Described without piston type Long Distances MR damper, it is characterized in that: described fixing seal end cap, field coil inner sleeve are made by lightweight non-magnet material.
Described without piston type Long Distances MR damper, it is characterized in that: described connecting rod, fixing clamping plate, field coil outer sleeve are made by permeability magnetic material.
Described without piston type Long Distances MR damper, it is characterized in that: described field coil can be single-stage coil or multi-pole coils.
Described without piston type Long Distances MR damper, it is characterized in that: described connecting rod can be the straight-bar structure of even thickness, also can be thin, the middle thick bars in two ends, and middle thick bar be by the cavity of field coil inner sleeve.
Described without piston type Long Distances MR damper, it is characterized in that: described fixing seal end cap and outer sleeve junction are provided with O type circle seal groove, in O type circle seal groove, be provided with O RunddichtringO.
Described without piston type Long Distances MR damper, it is characterized in that: described fixing seal end cap and connecting rod junction are provided with U-shaped circle seal groove, in U-shaped circle seal groove, be provided with U-shaped seal ring.
The present invention has following advantage compared with existing MR damper technology:
It is 1, of the present invention that to have working stroke without piston type Long Distances MR damper large;
2, the magnetic flow liquid volume used is little;
3, under null field, initial damping is little, and under same magnetic rheological damper size, field coil coiling quantity is many.The semi-active control being particularly suitable for being used in little load quality vibration isolation and light structures vibration without piston type Long Distances MR damper of the present invention.
What the present invention relates to is a kind ofly connected to the object two ends needing vibration damping without piston type Long Distances MR damper, when needs increase damping, only need to increase the applying electric current on field coil, when the current increases, the magnetic field be applied on magnetic flow liquid by coil is increased, at this moment the plastic viscosity of magnetic flow liquid increases, and the friction between bar and magnetic flow liquid increases, and therefore increases the output damping of MR damper.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is field coil of the present invention structural representation when being multi-pole coils.
Structural representation during Fig. 3 to be connecting rod of the present invention be middle thick bar.
Embodiment
As shown in Figure 1, without piston type Long Distances MR damper, include the outer sleeve 4 that two ends are nozzle, in the nozzle of outer sleeve 4 two ends, co-axial seal is provided with the first fixing seal end cap 2 respectively, second fixing seal end cap 12, in outer sleeve 4, intermediate coaxial is installed with field coil outer sleeve 6, field coil outer sleeve 6 two ends are nozzle, field coil inner sleeve 8 is coaxially arranged with in the cylinder chamber of field coil outer sleeve 6, field coil inner sleeve 8 two ends are nozzle, fixing clamping plate 5 is connected with between field coil outer sleeve 6 and field coil inner sleeve 8 corresponding end, by field coil outer sleeve 6, field coil inner sleeve 8, fixing clamping plate 5 is combined to form magnetic circuit winding, and by outer sleeve 4, fixing seal end cap 2, field coil inner sleeve 8, between fixing clamping plate 5, space forms magnetic flow liquid chamber 3, magnetic flow liquid is full of in magnetic flow liquid chamber 3, field coil outer sleeve 6, field coil inner sleeve 8, field coil 7 is provided with in space between fixing clamping plate 5, field coil 7 is connected with external power supply by wire, connecting rod 1 is coaxially arranged with in the cylinder chamber of field coil inner sleeve 8, after connecting rod 1 two ends pass from field coil inner sleeve 8 two ends nozzle respectively, pass from fixing seal end cap 2 center again, and seal between connecting rod 1 and fixing seal end cap 2 and be slidably matched, ring-shaped throttling passage 9 is formed by between connecting rod 1 and chamber, the cylinder chamber wall of field coil inner sleeve 8.
Fixing seal end cap 2,12, field coil inner sleeve 8 makes by lightweight non-magnet material.
Connecting rod 1, fixing clamping plate 5, field coil outer sleeve 6 are made by permeability magnetic material.
As shown in Figure 2, field coil 7 can be single-stage coil or multi-pole coils.
As shown in Figure 3, connecting rod 1 can be the straight-bar structure of even thickness, also can be thin, the middle thick bars in two ends, and middle thick bar is by the cavity of field coil inner sleeve 8.
Fixing seal end cap 2,12 and outer sleeve junction are provided with in O type circle seal groove 10, O type circle seal groove 10 and are provided with O RunddichtringO.
Fixing seal end cap 2,12 and connecting rod 1 junction are provided with U-shaped circle seal groove 11, are provided with U-shaped seal ring in U-shaped circle seal groove 11.
Specific embodiment one: a kind of without piston type Long Distances MR damper, is characterized in that: comprise connecting rod 1 without piston type Long Distances MR damper, the first fixing seal end cap 2, magnetic flow liquid chamber 3, outer sleeve 4, fixing clamping plate 5, field coil outer sleeve 6, field coil 7, field coil inner sleeve 8, ring-shaped throttling passage 9, O type circle seal groove 10, U-shaped circle seal groove 11, second fixing seal end cap 12 is successively set on outer sleeve from left to right.First fixing seal end cap 2 and the second fixing seal end cap 12 seal with the outer wall of connecting rod 1 and are slidably connected; First fixing seal end cap 2 is fixedly connected with the inner wall sealing of outer sleeve 4 with the second fixing seal end cap 12; The magnetic circuit winding that fixing clamping plate 5, magnetic coil outer sleeve 6 and field coil inner sleeve 8 are combined to form is fixed by screws in outer sleeve; Be provided with field coil 7 in the middle of fixing clamping plate 5, magnetic coil outer sleeve 6 and field coil inner sleeve 8, field coil is connected with power supply by wire; Outer sleeve 4, fixing clamping plate 5, form magnetic flow liquid chamber 3 between field coil inner sleeve 8, first fixing seal end cap 2 and the second fixing seal end cap 12, magnetic flow liquid chamber is full of magnetic flow liquid; The inwall of field coil inner sleeve 8 and the outer wall of connecting rod 1 form ring-shaped throttling passage 9.First fixing seal end cap 2, field coil inner sleeve 8 and the second fixing seal end cap 12 are made by lightweight non-magnet material, and connecting rod 1, fixing clamping plate 5 and field coil outer sleeve 6 are made by permeability magnetic material.
The outer sleeve 4 of this specific embodiment can according to the structure and material of controlled system itself, select seamless tubular goods or the special tubing of hydraulic pressure, material can by non-magnet material as aluminum alloy, titanium alloy, the materials such as teflon are made, damper weight saving can be made, can combine with the structure and material of controlled system simultaneously.
The hole stroke ring-shaped throttling passage of the outer wall of the connecting rod 1 of this specific embodiment and the inwall centre of field coil inner sleeve 8, produces damping force when magnetic flow liquid flows in ring-shaped throttling passage.
All parts of this specific embodiment are solid of rotation, are convenient to processing, and can reduce processing cost.
This specific embodiment mainly comprises three parts without the damping force of piston type Long Distances MR damper: first is the frictional force that connecting rod 1 and the sealing of the first fixing seal end cap 2, second fixing seal end cap 12 produce; Second is the viscous damping power that magnetic flow liquid 3 is produced by ring-shaped throttling passage; 3rd is due to externally-applied magnetic field, and magnetic flow liquid 3 obtains certain shear yield strength, when relative movement causes magnetic flow liquid by ring-shaped throttling passage, and the damping force relevant to magnetic field of generation.
Specific embodiment two: composition graphs 2 illustrates present embodiment, the field coil 7 of present embodiment is single-stage coil or multi-pole coils.The situation of single-stage coil be applicable to damping force required by controlled load or structure smaller time.The situation of multi-pole coils be applicable to damping force required by controlled load or structure larger time.Other composition is identical with embodiment one with annexation.
Specific embodiment three: composition graphs 3 illustrates present embodiment, the connecting rod 1 at damper central axis place is that two ends are thin, middle thick bar, and bar slightly all can not exceed the size of field coil skeleton 2 central through bore.Other composition is identical with embodiment one with annexation.
Claims (7)
1. without piston type Long Distances MR damper, it is characterized in that: include the outer sleeve that two ends are nozzle, in the nozzle of outer sleeve two ends, co-axial seal is provided with fixing seal end cap respectively, in outer sleeve, intermediate coaxial is installed with field coil outer sleeve, field coil outer sleeve two ends are nozzle, field coil inner sleeve is coaxially arranged with in the cylinder chamber of field coil outer sleeve, field coil inner sleeve two ends are nozzle, fixing clamping plate is connected with between field coil outer sleeve and field coil inner sleeve corresponding end, by field coil outer sleeve, field coil inner sleeve, fixing clamping plate is combined to form magnetic circuit winding, and by outer sleeve, fixing seal end cap, field coil inner sleeve, between fixing clamping plate, space forms magnetic flow liquid chamber, magnetic flow liquid is full of in magnetic flow liquid chamber, field coil outer sleeve, field coil inner sleeve, field coil is provided with in space between fixing clamping plate, field coil is connected with external power supply by wire, connecting rod is coaxially arranged with in the cylinder chamber of field coil inner sleeve, after connecting rod two ends pass from field coil inner sleeve two ends nozzle respectively, pass from fixing seal end cap central again, and seal between connecting rod and fixing seal end cap and be slidably matched, ring-shaped throttling passage is formed by between connecting rod and chamber, the cylinder chamber wall of field coil inner sleeve.
2. according to claim 1 without piston type Long Distances MR damper, it is characterized in that: described fixing seal end cap, field coil inner sleeve are made by lightweight non-magnet material.
3. according to claim 1 without piston type Long Distances MR damper, it is characterized in that: described connecting rod, fixing clamping plate, field coil outer sleeve are made by permeability magnetic material.
4. according to claim 1 without piston type Long Distances MR damper, it is characterized in that: described field coil can be single-stage coil or multi-pole coils.
5. according to claim 1 without piston type Long Distances MR damper, it is characterized in that: described connecting rod can be the straight-bar structure of even thickness, also can be thin, the middle thick bars in two ends, and middle thick bar be by the cavity of field coil inner sleeve.
6. according to claim 1 without piston type Long Distances MR damper, it is characterized in that: described fixing seal end cap and outer sleeve junction are provided with O type circle seal groove, in O type circle seal groove, be provided with O RunddichtringO.
7. according to claim 1 without piston type Long Distances MR damper, it is characterized in that: described fixing seal end cap and connecting rod junction are provided with U-shaped circle seal groove, in U-shaped circle seal groove, be provided with U-shaped seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510734667.9A CN105333053A (en) | 2015-10-30 | 2015-10-30 | Piston-less type large-stroke magnetorheological damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510734667.9A CN105333053A (en) | 2015-10-30 | 2015-10-30 | Piston-less type large-stroke magnetorheological damper |
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| CN105333053A true CN105333053A (en) | 2016-02-17 |
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| CN201510734667.9A Pending CN105333053A (en) | 2015-10-30 | 2015-10-30 | Piston-less type large-stroke magnetorheological damper |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725659A (en) * | 2009-12-15 | 2010-06-09 | 谭和平 | External electromagnet magnetorheological damper |
| CN102297228A (en) * | 2011-06-22 | 2011-12-28 | 谭晓婧 | Double-rod multidisc-piston magnetorheological fluid damper |
| CN102317535A (en) * | 2009-02-13 | 2012-01-11 | 株式会社东芝 | Drum-type washing machine |
| CN102770594A (en) * | 2010-02-24 | 2012-11-07 | 株式会社东芝 | Damper, washing machine, and washer/dryer |
| CN102859062A (en) * | 2010-04-26 | 2013-01-02 | 株式会社东芝 | Washing machine and drying machine |
| WO2013059951A1 (en) * | 2011-10-27 | 2013-05-02 | Pontificia Universidad Catolica De Chile | Magnetorheological damper |
-
2015
- 2015-10-30 CN CN201510734667.9A patent/CN105333053A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102317535A (en) * | 2009-02-13 | 2012-01-11 | 株式会社东芝 | Drum-type washing machine |
| CN101725659A (en) * | 2009-12-15 | 2010-06-09 | 谭和平 | External electromagnet magnetorheological damper |
| CN102770594A (en) * | 2010-02-24 | 2012-11-07 | 株式会社东芝 | Damper, washing machine, and washer/dryer |
| CN102859062A (en) * | 2010-04-26 | 2013-01-02 | 株式会社东芝 | Washing machine and drying machine |
| CN102297228A (en) * | 2011-06-22 | 2011-12-28 | 谭晓婧 | Double-rod multidisc-piston magnetorheological fluid damper |
| WO2013059951A1 (en) * | 2011-10-27 | 2013-05-02 | Pontificia Universidad Catolica De Chile | Magnetorheological damper |
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Application publication date: 20160217 |