CN200949632Y - Rotary shearing type magnetic flow changeable damper - Google Patents
Rotary shearing type magnetic flow changeable damper Download PDFInfo
- Publication number
- CN200949632Y CN200949632Y CN 200620097771 CN200620097771U CN200949632Y CN 200949632 Y CN200949632 Y CN 200949632Y CN 200620097771 CN200620097771 CN 200620097771 CN 200620097771 U CN200620097771 U CN 200620097771U CN 200949632 Y CN200949632 Y CN 200949632Y
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- damper
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- end cap
- magnetic core
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Abstract
A rotation shear mode MR damper comprises a cylinder block, magnetorheological fluids inside the cylinder block, a hollow piston rod (1) and a piston device thereon; the piston device comprises piston sealing plates (13,16), a piston external component (6), a magnetic core (15) which is provided inside the piston and a magnetizing coil (7) around the magnetic core which is parallel to the hollow piston rod (1); the piston external component(6) is two or more uniformly distributed annular sector cylinders and the magnetic core (15) inside the piston is a plurality of uniformly distributed iron cores which are disposed corresponding to the annular sector cylinders respectively. The direction of the magnetic line produced by the magnetizing coil is vertical to the cylinder barrel and the adjustable range of the ratio between the damping forces in the magnetic field and in the zero field is increased.
Description
Technical field:
The utility model belongs to a kind of rotational shear formula magnetorheological damping device, be specifically related to field coil adopt be parallel to piston rod to the MR damper of winding mode.
Background technique:
The field coil of existing MR damper is around the piston rod coiling, the magnetic line of force direction overwhelming majority in the magnetic field of its generation is parallel with the magnetic flow liquid flow path direction, and the actual fraction effectively and the mobile vertical magnetic line of force of direction of magnetic flow liquid, thereby the magnetic field efficient of this damper reduced and increased loss, and the result is that damping force is less under identical electric field or the magnetic field.The utility model discloses a kind of new structure, its field coil adopt be parallel to piston rod to winding mode, experimental result shows, the magnetic line of force overwhelming majority in this damper is vertical with the mobile direction of magnetic flow liquid, magnetizable particles in the magnetic flow liquid that flows is all under magnetic line of force effect, thereby the magnetic rheology effect maximization, the damping force of MR damper improves greatly under the equal conditions.
Summary of the invention:
The purpose of this utility model provides a kind of rotational shear formula MR damper, its field coil adopt be parallel to piston rod to winding mode, magnetic direction is perpendicular to cylinder barrel rotational shear formula MR damper.
The utility model is achieved in that
A kind of rotational shear formula MR damper (referring to accompanying drawing 1,2), this damper comprise cylinder body, are contained in cylinder body interior magnetic flow liquid, hollow piston rod 1, are loaded on the piston apparatus on the hollow piston rod 1; Last dynamic seal (packing) ring 12, dynamic seal (packing) ring 18 sealings are down arranged between hollow piston rod 1 and the cylinder body; Wherein cylinder body is made of cylinder barrel 5, upper end cap 2, lower end cap 10, the lower sealing ring 9 that is located at the upper sealing ring 3 of upper end cap outer rim and is located at the lower end cap outer rim; Piston apparatus comprises piston upper sealing panel 13 and piston lower seal plate 16, piston external member 6, be loaded on the magnetic core 15 of internal piston and constitute with 1 parallel field coil of hollow piston rod 7 on magnetic core 15; Leave clearance space 4 between piston apparatus and the end cap and reach clearance space 17 down; Field coil lead-in wire 11 links to each other with field coil 7.
Above-mentioned rotational shear formula MR damper, the piston external member 6 of its piston apparatus is equally distributed two or more annular sector cylinder, gapped between two annular sector cylinders, the magnetic core 15 of internal piston is by forming with the equally distributed one to one iron core of annular sector cylinder, magnetic core 15 is fixed on the piston rod 1, magnetic core 15 is fixed on the annular sector inboard wall of cylinder, field coil 7 is along being parallel to piston rod to being wrapped on the iron core, and direction of winding is opposite on the adjacent iron core.
Described rotational shear formula MR damper, its low-carbon steel material that cylinder body cylinder barrel 5 is the permeability height, coercivity is low is made; Upper end cap 2 and lower end cap 10 are that permeability is extremely low, and the stainless steel material that coercivity is high is made; Piston upper sealing panel 13 and piston lower seal plate 16 adopt the material of low magnetic conduction to make, and piston external member 6 and the permally sheet material combination that magnetic core 15 is the permeability height, coercivity is low form.
MR damper of the present utility model.In order under loading current, to obtain bigger damping force, adopted the field coil canoe different with the conventional damper device, method is that the internal piston at piston apparatus is distributed with several iron cores symmetrically, the piston external member of piston apparatus is equally distributed several annular sector cylinder, the corresponding iron core of annular sector cylinder, iron core is fixed on the annular sector inboard wall of cylinder, and iron core adopts the iron plate of sheet to form, and purpose is in order to reduce the loss of the magnetic line of force.And the coil employing is parallel to piston rod to being wrapped on several iron cores, and the coil direction of winding is opposite on the adjacent iron core, can produce more vertical magnetic lines of force by gap between piston and the cylinder body like this, and can significantly increase has the magnetic field damping force.
Adopt the magnetorheological damping control gear of rotational shear formula MR damper, wherein, contents such as concrete controlling device, sensing system and the electric control device of damper damping force can obtain in the correlation technique data of half controlled active system of existing damping force, these contents and damper are used, so do not provide relevant accompanying drawing and detailed elaboration thereof.
The utlity model has following feature:
1, the utility model adopts two bar monotubular structures, is convenient to the rotational shear work of damper.
2, the piston external member in the MR damper piston apparatus is equally distributed two or more annular sector cylinder, and it is gapped between each annular sector cylinder, it is vertical by the gap between cylinder barrel and the piston cylinder to make the most magnetic line of force be able to, the magnetic core of internal piston is and the several one to one equally distributed iron cores of annular sector cylinder that iron core serves as the magnetic pole effect.
3, field coil is that the edge is parallel to piston rod to being wrapped on several iron cores, and the coil direction of winding is opposite on the adjacent iron core, increases effective magnetic field intensity.
4, because magnetic direction perpendicular to cylinder barrel, has increased effective magnetic field intensity, improving when reducing the null field damping force has a damping force, thereby improves the performance of damper.
Description of drawings:
Fig. 1 is a kind of example structure schematic representation of the present utility model.
Fig. 2 is the A-A portion sectional drawing of Fig. 1
Fig. 3 is at the inner work magnetic circuit schematic representation that forms of damper when giving the field coil two ends loading current of MR damper shown in Figure 1.
Identify title among the figure: 1 box type piston bar, 2 upper end caps, 3 upper sealing rings, clearance space, 5 cylinder barrels on 4,6 piston external members, 7 field coils, 8 seal rings, 9 lower sealing rings, 10 lower end caps, 11 lead-in wires, dynamic seal (packing) ring, 13 piston upper sealing panels, 14 lead channels on 12,15 magnetic cores, 16 piston lower seal plates, 17 times clearance spaces, 18 times dynamic seal (packing) rings.
Embodiment:
Further describe the utility model below with reference to Fig. 1, Fig. 2, Fig. 3:
A kind of example structure of the present utility model such as Fig. 1 illustrate.Illustrated magnetorheological damping control gear is the two bar rotational shear formula MR damper of monotubular, consists predominantly of piston rod, cylinder body, piston apparatus, Sealing.Wherein piston rod 1 is a hollow tubular structure, piston rod adopts low magnetic stainless steel material, adopt between hollow piston rod 1 and the cylinder body and go up dynamic seal (packing) ring 12, dynamic seal (packing) ring 18 sealings down, the cylinder body of damper is mainly by high permeability low carbon steel cylinder barrel 5, and the stainless steel upper end cap 2 of utmost point low permeability and lower end cap 10 constitute.The piston upper sealing panel 13 of piston apparatus and piston lower seal plate 16 adopt the stainless steel material of low magnetic conduction; Piston external member 6 and magnetic core 15 all adopt the material of high magnetic conduction.Stay certain clearance space 4,17 between piston apparatus and the end cap, be loaded with magnetic flow liquid in the space, the space isolates by upper sealing ring 3 and lower sealing ring 9; Field coil lead-in wire 11 links to each other with field coil 7 by space, lead channels 14 in the box type piston bar, and the sealer sealing is adopted in the joint.
The utility model utilizes the part of cylinder barrel 5 as the magnetic field generator magnetic circuit, employing permeability height, the low-carbon steel material that coercivity is low, the piston external member 6 of damper and magnetic core 15 be as the internal magnetic circuit of magnetic field generator, adopts permeability height, permally sheet material that coercivity is low.Field coil 7 around the home on iron core, the parallel and piston rod of direction, the damp channel of magnetic field magnetic line that field coil 7 is produced by forming by cylinder barrel 5 and magnetic core 15.In order to ensure the sealing of vibration damper, adopt upper sealing ring 3, seal ring 8 and lower sealing ring 9 sealings in the joint of box type piston bar 1, cylinder body and cylinder barrel 5.
Core as this rotational shear formula MR damper, piston external member 6 is made up of equally distributed two or more annular sector cylinders, gappedly between each annular sector cylinder make the most magnetic line of force be able to vertically by the gap between cylinder barrel 5 and the piston outside 6, field coil 7 adopts and is parallel to piston rod to winding, rather than traditional winding method that is surrounded on piston rod, and adjacent iron core direction of winding is opposite, can obtain so more perpendicular to the effective magnetic line of force of cylinder barrel, increase damping force.
When Fig. 3 is loading current, damper internal magnetic field schematic representation.The circuit turn-on of working as the excitation signal source in the present embodiment, during the field coil loading current, the magnetic field that it produces will produce the closed-loop path shown in arrow among the figure, the magnetic field that field coil 7 forms forms closed magnetic loop between the space between piston external member 6 winding portions, magnetic core 15, box type piston bar 1 and the cylinder barrel 5, cylinder barrel 5, the magnetic line of force in the space is perpendicular to cylinder barrel.
Claims (3)
1, a kind of rotational shear formula MR damper, this damper comprise cylinder body, are contained in cylinder body interior magnetic flow liquid, hollow piston rod (1), are loaded on the piston apparatus on the hollow piston rod (1); Last dynamic seal (packing) ring (12), dynamic seal (packing) ring (18) sealing are down arranged between hollow piston rod (1) and the cylinder body; Wherein cylinder body is made of cylinder barrel (5), upper end cap (2), lower end cap (10), the lower sealing ring (9) that is located at the upper sealing ring (3) of upper end cap (2) outer rim and is located at lower end cap (10) outer rim; It is characterized in that, piston apparatus comprises piston upper sealing panel (13), piston lower seal plate (16), piston external member (6), is loaded on the magnetic core (15) of internal piston and goes up field coil (7) formation parallel with hollow piston rod (1) axle around magnetic core (15); Leave clearance space (4), following clearance space (17) between piston apparatus and the end cap; Field coil lead-in wire (11) links to each other with field coil (7).
2, rotational shear formula MR damper as claimed in claim 1, it is characterized in that, the piston external member (6) of piston apparatus is equally distributed two or more annular sector cylinder, gapped between two annular sector cylinders, the magnetic core of internal piston (15) is by forming with the equally distributed one to one iron core of annular sector cylinder, magnetic core (15) is fixed on the piston rod (1), magnetic core (15) is fixed on the annular sector inboard wall of cylinder, field coil (7) is along being parallel to piston rod to being wrapped on the iron core, and direction of winding is opposite on the adjacent iron core.
3, rotational shear formula MR damper as claimed in claim 1, it is characterized in that, the low-carbon steel material that the cylinder barrel of described damper (5) is the permeability height, coercivity is low is made, upper end cap (2) and lower end cap (10) are made for permeability stainless steel material extremely low, that coercivity is high, and piston external member (10) and the permally sheet material combination that magnetic core (15) is the permeability height, coercivity is low form; Piston upper sealing panel (13) and piston lower seal plate (16) adopt the material of low magnetic conduction to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620097771 CN200949632Y (en) | 2006-07-13 | 2006-07-13 | Rotary shearing type magnetic flow changeable damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620097771 CN200949632Y (en) | 2006-07-13 | 2006-07-13 | Rotary shearing type magnetic flow changeable damper |
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| Publication Number | Publication Date |
|---|---|
| CN200949632Y true CN200949632Y (en) | 2007-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620097771 Expired - Fee Related CN200949632Y (en) | 2006-07-13 | 2006-07-13 | Rotary shearing type magnetic flow changeable damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200949632Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805217A (en) * | 2016-05-09 | 2016-07-27 | 江苏大学 | Magneto-rheological damper for circular magnetic circuit |
| CN108331877A (en) * | 2018-01-22 | 2018-07-27 | 哈尔滨工程大学 | Shear-type magnetorheological fluid damper based on quadrupole magnetic core Yu foam metal liner |
| CN109404476A (en) * | 2018-12-14 | 2019-03-01 | 哈尔滨工程大学 | A kind of embedded multi-channel shunt runner MR damper |
| CN109630595A (en) * | 2018-11-27 | 2019-04-16 | 武汉新能源汽车工业技术研究院有限公司 | A kind of MR damper for preventing circumferentially to slide |
| CN109838493A (en) * | 2019-04-12 | 2019-06-04 | 宴晶科技(北京)有限公司 | A kind of MR damper of more magnetic couple stator structures |
| CN109869435A (en) * | 2019-04-12 | 2019-06-11 | 宴晶科技(北京)有限公司 | A kind of MR damper of more magnetic couple Structure of mover |
| CN112360915A (en) * | 2020-08-20 | 2021-02-12 | 武汉理工大学 | Novel magnetorheological fluid shock absorber |
| CN112984028A (en) * | 2021-01-21 | 2021-06-18 | 浙江师范大学 | Design method of magneto-rheological shock absorber |
-
2006
- 2006-07-13 CN CN 200620097771 patent/CN200949632Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105805217A (en) * | 2016-05-09 | 2016-07-27 | 江苏大学 | Magneto-rheological damper for circular magnetic circuit |
| CN105805217B (en) * | 2016-05-09 | 2017-09-05 | 江苏大学 | A kind of magneto-rheological vibration damper of toroid |
| CN108331877A (en) * | 2018-01-22 | 2018-07-27 | 哈尔滨工程大学 | Shear-type magnetorheological fluid damper based on quadrupole magnetic core Yu foam metal liner |
| CN109630595A (en) * | 2018-11-27 | 2019-04-16 | 武汉新能源汽车工业技术研究院有限公司 | A kind of MR damper for preventing circumferentially to slide |
| CN109630595B (en) * | 2018-11-27 | 2020-10-02 | 武汉新能源汽车工业技术研究院有限公司 | Magnetorheological damper capable of preventing circumferential sliding |
| CN109404476A (en) * | 2018-12-14 | 2019-03-01 | 哈尔滨工程大学 | A kind of embedded multi-channel shunt runner MR damper |
| CN109404476B (en) * | 2018-12-14 | 2020-11-03 | 哈尔滨工程大学 | Embedded multi-channel bypass flow channel magnetorheological damper |
| CN109838493A (en) * | 2019-04-12 | 2019-06-04 | 宴晶科技(北京)有限公司 | A kind of MR damper of more magnetic couple stator structures |
| CN109869435A (en) * | 2019-04-12 | 2019-06-11 | 宴晶科技(北京)有限公司 | A kind of MR damper of more magnetic couple Structure of mover |
| CN109838493B (en) * | 2019-04-12 | 2021-05-07 | 宴晶科技(北京)有限公司 | Magneto-rheological damper with multi-magnetic-couple stator structure |
| CN112360915A (en) * | 2020-08-20 | 2021-02-12 | 武汉理工大学 | Novel magnetorheological fluid shock absorber |
| CN112984028A (en) * | 2021-01-21 | 2021-06-18 | 浙江师范大学 | Design method of magneto-rheological shock absorber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070919 Termination date: 20120713 |