CN102359535A - Magnetorheological damper - Google Patents
Magnetorheological damper Download PDFInfo
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- CN102359535A CN102359535A CN2011102533793A CN201110253379A CN102359535A CN 102359535 A CN102359535 A CN 102359535A CN 2011102533793 A CN2011102533793 A CN 2011102533793A CN 201110253379 A CN201110253379 A CN 201110253379A CN 102359535 A CN102359535 A CN 102359535A
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- seal ring
- damper
- end cap
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Abstract
The invention discloses a magnetorheological damper which comprises a cylinder body and a piston rod, wherein a left end cover seal ring is arranged on a left end cover of the cylinder body, a right end cover seal ring is arranged on a right end cover of the cylinder body, and both ends of the piston rods are respectively arranged in the center holes of the left end cover seal ring and the right end cover seal ring. The magnetorheological damper is characterized in that a circular annular coil is fixedly connected to the middle part in the cylinder body, and a damping channel is formed between the circular annular coil and the piston rod; two pistons are fixedly connected on the piston rod, namely left piston and right piston, the left piston is located at the left side of the circular annular coil, and the right piston is located at the right side of the circular annular coil; a communicating pipe is arranged in the cylinder body, a left port of the communicating pipe is arranged at the left side of the left piston, a right port of the communicating pipe is arranged at the right side of the right piston, and magnetorheological fluid is filled in the cylinder body and the communicating pipe. In the invention, damper working pressure and a motive seal structure are isolated, the pressure of the magnetorheological fluid to the seal structure is lowered, the wearing rate of the seal structure is reduced, and the working life of the magnetorheological damper is prolonged.
Description
Technical field
The present invention relates to a kind of damper, particularly a kind of MR damper.
Background technique
MR damper is a kind of semi-active damper spare; Its damping force is along with the size of coil current is adjustable continuously; The MR damper regulation range is wide, speed of response is fast, energy consumption is low; Extensively applied in the structural vibration reduction control fields such as automobile, bridge, building structural vibration reduction to be had important effect.The working principle of MR damper is based on the rheological effect of magnetic flow liquid, and the basic comprising of its magnetic flow liquid is the magnetic molecule that suspending in the basal liquid, when the MR damper of common structure is reciprocating; Particle ceaselessly weares and teares to piston rod and seal ring or polishes effect; It is big more to exert oneself, and the pressure that sealing configuration receives is big more, and it is fast more to wear and tear; Begin soon to leak, cause the life-span of MR damper all far to be shorter than oil damper usually.
Summary of the invention
The object of the invention is exactly the deficiency to existing technology, and a kind of pressure that reduces magnetic flow liquid to sealing configuration is provided, and the wearing and tearing of motive sealing are slowed down, and prolongs the MR damper of MR damper operating life.
For realizing above-mentioned purpose, the present invention adopts following technological scheme:
A kind of MR damper; Comprise cylinder body, piston rod, on the left end cap of cylinder body, be provided with the left end cap seal ring, the right end cap of cylinder body is provided with the right end cap seal ring; The two ends of piston rod place left end cap seal ring, right end cap seal ring center hole respectively; It is characterized in that: the middle part in cylinder body is fixedly connected with making toroidal coil, and making toroidal coil is connected with DC electrical source, forms damp channel between making toroidal coil and the piston rod; Establish on the described piston rod and be fixedly connected with two-piston, left piston and right piston, left piston is positioned at the left side of making toroidal coil, and right piston is positioned at the right side of making toroidal coil; On cylinder body, be provided with connecting tube, the left port of connecting tube is located at the left side of left piston, and the right output port of connecting tube is located at the right side of right piston, and connecting tube has been full of magnetic flow liquid through the internal communication of left port and right output port and cylinder body at cylinder body and in connecting tube.Above-mentioned cylinder body, piston, piston rod are solid of rotation; The lead-in wire of making toroidal coil can pass cylinder body and be connected with DC electrical source, and the position of passing cylinder body is sealed.
Owing to adopted technique scheme, when piston during,, form high pressure in the cavity B referring to Fig. 1 toward left movement, magnetic flow liquid is clamp-oned cavity A from cavity B through damp channel, change the making toroidal coil electric current and just can change the damper size of exerting oneself.Meanwhile magnetic flow liquid flows to cavity D through bypass tube in the cavity C, and obviously, the pressure of cavity C and D is far below coating space A of two-piston institute and B; The high pressure magnetic flow liquid is coated between two pistons; Come damper working pressure and sealing configuration are isolated, seal ring only bears the pressure that magnetic flow liquid produces because of resistance in flow process, and promptly seal ring does not bear the working pressure of damper; Make magnetic flow liquid be difficult to get between seal ring and the piston rod simultaneously; Minimizing to prolong the motive sealing life-span of MR damper, improves the working life of MR damper to the wearing and tearing of seal ring.
Preferably, described left piston, right piston are slidingly matched with the inwall of cylinder body respectively.
The beneficial effect of MR damper of the present invention is, through with the damper working pressure and movable sealing structure is isolated comes, reduces the pressure of magnetic flow liquid to sealing configuration, slows down its rate of wear, prolongs the MR damper operating life.
Description of drawings
Fig. 1 is the structural representation of MR damper of the present invention.
EmbodimentBelow in conjunction with accompanying drawing the present invention is further described, but does not therefore limit the present invention among the described scope of embodiments.
Referring to Fig. 1, a kind of MR damper comprises cylinder body 1, piston rod 2; On the left end cap 21 of cylinder body 1, be provided with left end cap seal ring 4; The right end cap 21A of cylinder body 1 is provided with right end cap seal ring 4A, and the two ends of piston rod 2 place left end cap seal ring 4, right end cap seal ring 4A center hole respectively, and it is characterized in that: the middle part in cylinder body 1 is fixedly connected with making toroidal coil 3; Making toroidal coil 3 is connected with DC electrical source, forms damp channel 6 between making toroidal coil 3 and the piston rod 2; Establish on the described piston rod 2 and be fixedly connected with two-piston, left piston 5 and right piston 5A, left piston 5 is positioned at the left side of making toroidal coil 3, and right piston 5A is positioned at the right side of making toroidal coil 3; On cylinder body 1, be provided with connecting tube 7; The left port 8 of connecting tube 7 is located at the left side of left piston 5; The right output port 8A of connecting tube 7 is located at the right side of right piston 5A, and connecting tube 7 has been full of magnetic flow liquid through the internal communication of left port 8 with right output port 8A and cylinder body 1 at cylinder body 1 and in connecting tube 7.
Described left piston 5, right piston 5A are slidingly matched with the inwall of cylinder body 1 respectively.
More than show and described basic principle of the present invention and major character and advantage of the present invention.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (2)
1. MR damper; Comprise cylinder body (1), piston rod (2); On the left end cap (21) of cylinder body (1), be provided with left end cap seal ring (4); The right end cap (21A) of cylinder body (1) is provided with right end cap seal ring (4A), and the two ends of piston rod (2) place left end cap seal ring (4), right end cap seal ring (4A) center hole respectively, and it is characterized in that: the middle part in cylinder body (1) is fixedly connected with making toroidal coil (3); Making toroidal coil (3) is connected with DC electrical source, forms damp channel (6) between making toroidal coil (3) and the piston rod (2); Establish on the described piston rod (2) and be fixedly connected with two-piston, left piston (5) and right piston (5A), left piston (5) is positioned at the left side of making toroidal coil (3), and right piston (5A) is positioned at the right side of making toroidal coil (3); On cylinder body (1), be provided with connecting tube (7); The left port (8) of connecting tube (7) is located at the left side of left piston (5); The right output port (8A) of connecting tube (7) is located at the right side of right piston (5A); Connecting tube (7) has been full of magnetic flow liquid through the internal communication of left port (8) and right output port (8A) and cylinder body (1) at cylinder body (1) and in connecting tube (7).
2. a kind of MR damper according to claim 1 is characterized in that: described left piston (5), right piston (5A) are slidingly matched with the inwall of cylinder body (1) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110253379.3A CN102359535B (en) | 2011-08-31 | 2011-08-31 | Magnetorheological damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110253379.3A CN102359535B (en) | 2011-08-31 | 2011-08-31 | Magnetorheological damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102359535A true CN102359535A (en) | 2012-02-22 |
| CN102359535B CN102359535B (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110253379.3A Active CN102359535B (en) | 2011-08-31 | 2011-08-31 | Magnetorheological damper |
Country Status (1)
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| CN (1) | CN102359535B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591209A (en) * | 2013-11-08 | 2014-02-19 | 青岛农业大学 | Seven-level adjustable reciprocating type electrorheological fluid damper |
| CN104653685A (en) * | 2015-02-02 | 2015-05-27 | 北京工业大学 | Hydraulic damper with leakage prevention, short stroke and high energy consumption |
| CN105202101A (en) * | 2015-10-10 | 2015-12-30 | 唐哲敏 | Bidirectional isoelastic equivariant-damp air cylinder |
| CN111895031A (en) * | 2020-07-28 | 2020-11-06 | 河海大学 | Magnetorheological fluid damper with heat insulation function |
| CN113757292A (en) * | 2021-09-16 | 2021-12-07 | 昆明理工大学 | Multi-channel aircraft landing gear magneto-rheological shimmy damper, control method, system and application |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998004846A1 (en) * | 1996-07-30 | 1998-02-05 | The Board Of Regents Of The University And Community College System Of Nevada | Magneto-rheological fluid damper |
| CN1482378A (en) * | 2003-07-24 | 2004-03-17 | 上海交通大学 | Construction variable straight magnetic current flowing deforming brake |
| CN2648175Y (en) * | 2003-09-25 | 2004-10-13 | 欧进萍 | Built-in air bag type double-rod magnetic flux variable fluid damper |
| CN1865729A (en) * | 2006-06-21 | 2006-11-22 | 天津大学 | Spiral groove structured magneto-rheological damper |
| CN200949631Y (en) * | 2006-07-13 | 2007-09-19 | 江苏天一超细金属粉末有限公司 | Shear flowing type magnetic flow changeable damper |
| CN101514734A (en) * | 2009-03-30 | 2009-08-26 | 东南大学 | Air pressure transmitting type magneto-rheological damper |
| CN102011826A (en) * | 2011-01-07 | 2011-04-13 | 中国电力科学研究院 | Limiting power transmission tower vibration reduction damper |
-
2011
- 2011-08-31 CN CN201110253379.3A patent/CN102359535B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998004846A1 (en) * | 1996-07-30 | 1998-02-05 | The Board Of Regents Of The University And Community College System Of Nevada | Magneto-rheological fluid damper |
| CN1482378A (en) * | 2003-07-24 | 2004-03-17 | 上海交通大学 | Construction variable straight magnetic current flowing deforming brake |
| CN2648175Y (en) * | 2003-09-25 | 2004-10-13 | 欧进萍 | Built-in air bag type double-rod magnetic flux variable fluid damper |
| CN1865729A (en) * | 2006-06-21 | 2006-11-22 | 天津大学 | Spiral groove structured magneto-rheological damper |
| CN200949631Y (en) * | 2006-07-13 | 2007-09-19 | 江苏天一超细金属粉末有限公司 | Shear flowing type magnetic flow changeable damper |
| CN101514734A (en) * | 2009-03-30 | 2009-08-26 | 东南大学 | Air pressure transmitting type magneto-rheological damper |
| CN102011826A (en) * | 2011-01-07 | 2011-04-13 | 中国电力科学研究院 | Limiting power transmission tower vibration reduction damper |
Non-Patent Citations (1)
| Title |
|---|
| 蔡植善: "磁流变阻尼器的应用", 《泉州师范学院学报》, vol. 21, no. 2, 31 March 2003 (2003-03-31) * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103591209A (en) * | 2013-11-08 | 2014-02-19 | 青岛农业大学 | Seven-level adjustable reciprocating type electrorheological fluid damper |
| CN104653685A (en) * | 2015-02-02 | 2015-05-27 | 北京工业大学 | Hydraulic damper with leakage prevention, short stroke and high energy consumption |
| CN104653685B (en) * | 2015-02-02 | 2017-06-06 | 北京工业大学 | The small stroke high energy consumption hydraulic damper of antiseep |
| CN105202101A (en) * | 2015-10-10 | 2015-12-30 | 唐哲敏 | Bidirectional isoelastic equivariant-damp air cylinder |
| CN111895031A (en) * | 2020-07-28 | 2020-11-06 | 河海大学 | Magnetorheological fluid damper with heat insulation function |
| CN113757292A (en) * | 2021-09-16 | 2021-12-07 | 昆明理工大学 | Multi-channel aircraft landing gear magneto-rheological shimmy damper, control method, system and application |
| CN113757292B (en) * | 2021-09-16 | 2022-11-11 | 昆明理工大学 | Multi-channel aircraft landing gear magneto-rheological shimmy damper, control method, system and application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102359535B (en) | 2015-06-17 |
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