CN105156575A - Double-rod multistage-piston passive double-control variable-damping magnetorheological damper - Google Patents
Double-rod multistage-piston passive double-control variable-damping magnetorheological damper Download PDFInfo
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- CN105156575A CN105156575A CN201510427929.7A CN201510427929A CN105156575A CN 105156575 A CN105156575 A CN 105156575A CN 201510427929 A CN201510427929 A CN 201510427929A CN 105156575 A CN105156575 A CN 105156575A
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Abstract
The invention discloses a double-rod multistage-piston passive double-control variable-damping magnetorheological damper and belongs to the field of variable-damping magnetorheological fluid instruments. The double-rod multistage-piston passive double-control variable-damping magnetorheological damper comprises a special-shaped working cylinder body, two end cover modules the same in structure, two multistage-piston modules, magnetorheological fluid and a working clearance. The two multistage-piston modules are the same in structure and are symmetrically arranged in the special-shaped working cylinder body. The special-shaped working cylinder body is a hollow cylinder. The internal diameter of the middle of the special-shaped working cylinder body is minimal, the internal diameters of the two ends of the special-shaped working cylinder body are maximal, and the internal diameters of the other portions of the special-shaped working cylinder body linearly change. The multistage piston modules comprise primary pistons, piston magnets, secondary pistons and piston rods. The primary pistons and the secondary pistons are arranged on the corresponding piston rods from inside to outside in a spaced mode. The distance between the edges of the outer walls of the primary pistons and the inner wall of the special-shaped working cylinder body and the distance between the edges of the outer walls of the secondary pistons and the inner wall of the special-shaped working cylinder body are equal. The diameters of the primary pistons are within the range from the maximal value of the internal diameter of the special-shaped working cylinder body to the minimal value of the internal diameter of the special-shaped working cylinder body. The magnetorheological damper is reasonable in structure, adjustable in damping in a zero current state and free of energy consumption and suspended particle sedimentation.
Description
Technical field
The present invention relates to mutative damp magnetic flow liquid instrument field, refer in particular to a kind of two bar multi-level piston passive dual control mutative damp MR damper.
Background technique
Under magnetic fields, magnetic flow liquid can realize liquid and semisolid mutual conversion fast, and the MR damper utilizing magnetic flow liquid to make realizes continuously adjustable controllable damping force.The MR damper basic principle of prior art is identical, and the magnetic field namely utilizing field coil to produce changes the damping force of the magnetic flow liquid flowed in constant operation gap.Although the MR damper of prior art achieves mutative damp, but still there is certain defect: (1) constant working clearance cause zero current condition under damping force non-adjustable; (2) during field coil energising, power consumption is large, easily causes precipitate suspended particles during power-off.
Summary of the invention
The technical problem that the present invention need solve is: the technical problem existed for prior art, the invention provides that damping under a kind of rational in infrastructure, zero current condition is adjustable, zero power consumption is without the MR damper of particles settling.
In order to solve the problem, the solution that the present invention proposes is: two bar multi-level pistons passive dual control mutative damp MR damper, and it comprises identical end cap module, the two groups of identical symmetries of structure being installed in described special-shaped working cylinder two ends respectively of special-shaped working cylinder, two groups of structures and is installed in the multi-level piston module of described special-shaped working cylinder inside, magnetic flow liquid and working clearance.
Described special-shaped working cylinder of the present invention is that middle part internal diameter is minimum, and two end part internal diameter is maximum, the hollow cylinder of remaining part internal diameter linear change.
Described end cap module of the present invention comprises end cap body, is installed in the end cap magnet inside described end cap body, the end cap protective layer be installed on described end cap magnet; Described multi-level piston module comprises first stage piston, is located at piston magnet, second piston, the piston rod of described first stage piston inside.
Described first stage piston of the present invention and described second piston are spaced a distance and are installed in from inside to outside on described piston rod, and their fascia edge to described special-shaped working cylinder inwall between distance equal; The other end of described piston rod by described end cap protective layer, end cap magnet and bearing hole, and reaches the outside of described special-shaped working cylinder; The diameter of described first stage piston is between the maxima and minima of described special-shaped working cylinder internal diameter; Gap between the periphery wall of described piston and the inner circle wall of described special-shaped working cylinder constitutes the working clearance that described magnetic flow liquid flows.
Compared with prior art, the invention has the advantages that: of the present invention pair of bar multi-level piston passive dual control mutative damp MR damper is provided with special-shaped working cylinder and multi-level piston module, after piston rod movement under force, the working clearance is reduced to zero gradually from maximum value, and damping force increases gradually; The present invention is also provided with end cap magnet and piston magnet, ensures the suspended particulate not sedimentation in magnetic flow liquid.It can thus be appreciated that, the present invention rational in infrastructure simple, achieve and become working clearance and mutative damp power, effectively overcome the unstability causing magnetic flow liquid because of precipitate suspended particles simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of of the present invention pair of bar multi-level piston passive dual control mutative damp MR damper.
In figure, 1-special-shaped working cylinder; 2-end cap module; 21-end cap body; 22-bearing hole; 23-linear bearing; 24-end cap magnet; 25-end cap protective layer; 3-multi-level piston module; 31-piston magnet; 32-first stage piston; 33-second piston; 34-piston rod; 4-working clearance; 5-magnetic flow liquid.
Embodiment
Below with reference to the drawings and specific embodiments, the present invention is described in further detail.
Shown in Figure 1, of the present invention pair of bar multi-level piston passive dual control mutative damp MR damper, comprises identical end cap module 2, the two groups of identical symmetries of structure being installed in special-shaped working cylinder 1 two ends respectively of special-shaped working cylinder 1, two groups of structures and is installed in the multi-level piston module 3 of special-shaped working cylinder 1 inside, magnetic flow liquid 5 and working clearance 4.
Shown in Figure 1, special-shaped working cylinder 1 is that middle part internal diameter is minimum, and two end part internal diameter is maximum, the hollow cylinder of remaining part internal diameter linear change; End cap module 2 comprises end cap body 21, is installed in the end cap magnet 24 inside end cap body 21, the end cap protective layer 25 be installed on end cap magnet 24; Multi-level piston module 3 comprises first stage piston 32, is located at the piston magnet 31 of first stage piston 32 inside, second piston 33, piston rod 34.
Shown in Figure 1, first stage piston 32 and second piston 33 are spaced a distance and are installed in from inside to outside on piston rod 34, and their fascia edge to special-shaped working cylinder 1 inwall between distance equal; The other end of piston rod 34 by end cap protective layer 25, end cap magnet 24 and bearing hole 22, and reaches the outside of special-shaped working cylinder 1; The diameter of first stage piston 32 is between the maxima and minima of special-shaped working cylinder 1 internal diameter; Gap between the periphery wall of piston and the inner circle wall of special-shaped working cylinder 1 constitutes the working clearance 4 that magnetic flow liquid 5 flows; When multi-level piston module 3 is moved, the working clearance 4 gradually becomes zero from maximum value, and damping force increases gradually from minimum value.
Claims (1)
1. pair bar multi-level piston passive dual control mutative damp MR damper, is characterized in that: comprise that special-shaped working cylinder (1), two groups of structures are identically installed in the end cap module (2) at described special-shaped working cylinder (1) two ends respectively, two groups of identical symmetries of structure are installed in the inner multi-level piston module (3) of described special-shaped working cylinder (1), magnetic flow liquid (5) and working clearance (4); Described special-shaped working cylinder (1) for middle part internal diameter minimum, two end part internal diameter is maximum, the hollow cylinder of remaining part internal diameter linear change; Described end cap module (2) comprises end cap body (21), is installed in end cap magnet (24), the end cap protective layer (25) be installed on described end cap magnet (24) of described end cap body (21) inner side; Described multi-level piston module (3) comprises first stage piston (32), is located at described first stage piston (32) inner piston magnet (31), second piston (33), piston rod (34); Described first stage piston (32) and described second piston (33) are spaced a distance and are installed in from inside to outside on described piston rod (34), and their fascia edge to described special-shaped working cylinder (1) inwall between distance equal; The other end of described piston rod (34) by described end cap protective layer (25), end cap magnet (24) and bearing hole (22), and reaches the outside of described special-shaped working cylinder (1); The diameter of described first stage piston (32) is between the maxima and minima of described special-shaped working cylinder (1) internal diameter; Gap between the periphery wall of described piston and the inner circle wall of described special-shaped working cylinder (1) constitutes the working clearance (4) that described magnetic flow liquid (5) flows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510427929.7A CN105156575A (en) | 2015-07-20 | 2015-07-20 | Double-rod multistage-piston passive double-control variable-damping magnetorheological damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510427929.7A CN105156575A (en) | 2015-07-20 | 2015-07-20 | Double-rod multistage-piston passive double-control variable-damping magnetorheological damper |
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| CN105156575A true CN105156575A (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510427929.7A Pending CN105156575A (en) | 2015-07-20 | 2015-07-20 | Double-rod multistage-piston passive double-control variable-damping magnetorheological damper |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5878997A (en) * | 1997-09-10 | 1999-03-09 | Lucent Technologies Inc. | Compact low-inductance magnetorheological damper |
| CN1309250A (en) * | 2000-02-15 | 2001-08-22 | 许金鲁 | Hydraulic buffer technique without elasticity and linear damping increasement and bidirectional buffer thereby |
| JP2004019741A (en) * | 2002-06-14 | 2004-01-22 | Bando Chem Ind Ltd | Shock absorber using magnetic viscous fluid |
| CN102418764A (en) * | 2011-08-25 | 2012-04-18 | 谢宁 | Magnetorheological damper with multiple embedded sensors |
| CN202659800U (en) * | 2012-05-21 | 2013-01-09 | 上海应用技术学院 | Double-ended foam metal magneto-rheological fluid damper |
| CN103534508A (en) * | 2011-05-17 | 2014-01-22 | 北京京西重工有限公司 | Magneto-rheological damping assembly |
| CN104613127A (en) * | 2014-10-16 | 2015-05-13 | 中国矿业大学 | Double-outlet-rod telescopic magneto-rheological damper with built-in permanent magnets |
-
2015
- 2015-07-20 CN CN201510427929.7A patent/CN105156575A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5878997A (en) * | 1997-09-10 | 1999-03-09 | Lucent Technologies Inc. | Compact low-inductance magnetorheological damper |
| CN1309250A (en) * | 2000-02-15 | 2001-08-22 | 许金鲁 | Hydraulic buffer technique without elasticity and linear damping increasement and bidirectional buffer thereby |
| JP2004019741A (en) * | 2002-06-14 | 2004-01-22 | Bando Chem Ind Ltd | Shock absorber using magnetic viscous fluid |
| CN103534508A (en) * | 2011-05-17 | 2014-01-22 | 北京京西重工有限公司 | Magneto-rheological damping assembly |
| CN102418764A (en) * | 2011-08-25 | 2012-04-18 | 谢宁 | Magnetorheological damper with multiple embedded sensors |
| CN202659800U (en) * | 2012-05-21 | 2013-01-09 | 上海应用技术学院 | Double-ended foam metal magneto-rheological fluid damper |
| CN104613127A (en) * | 2014-10-16 | 2015-05-13 | 中国矿业大学 | Double-outlet-rod telescopic magneto-rheological damper with built-in permanent magnets |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20151216 |