CN2763635Y - Magnetorheological semi-active shock-damper with failure self-protection function - Google Patents
Magnetorheological semi-active shock-damper with failure self-protection function Download PDFInfo
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- CN2763635Y CN2763635Y CN 200520100348 CN200520100348U CN2763635Y CN 2763635 Y CN2763635 Y CN 2763635Y CN 200520100348 CN200520100348 CN 200520100348 CN 200520100348 U CN200520100348 U CN 200520100348U CN 2763635 Y CN2763635 Y CN 2763635Y
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- Prior art keywords
- piston
- magnetic
- permanent magnet
- shock absorber
- assembly
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- 239000007788 liquid Substances 0.000 claims abstract description 41
- 239000006096 absorbing agent Substances 0.000 claims abstract description 8
- 230000035939 shock Effects 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims abstract 5
- 230000005284 excitation Effects 0.000 claims abstract 3
- 239000000725 suspension Substances 0.000 claims description 15
- 239000011241 protective layer Substances 0.000 claims description 6
- 210000004907 gland Anatomy 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 238000013016 damping Methods 0.000 abstract description 24
- 230000000694 effects Effects 0.000 abstract description 3
- 239000012141 concentrate Substances 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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- Fluid-Damping Devices (AREA)
- Vibration Prevention Devices (AREA)
Abstract
本实用新型涉及一种具有失效自保护功能的磁流变液半主动减振器。它包括贮液缸组件，在活塞或缸筒的内侧、外侧或端部设有永磁体。本实用新型由于采用了永磁体，因而具有如下优点：1.由于永磁体能够产生磁场，所以在没有施加电流时或者控制装置出现故障时，磁流变液也能产生正常工作时的中心阻尼力，使得减振器的性能可靠稳定，避免或降低了现有的磁流变液半主动减振器由于断电故障而造成的损失。2.由于永磁体产生的磁场使磁流变液能够产生正常工作时的中心阻尼力，因此减振器工作时的励磁电流主要集中在零电流值附近，而现有减振器若想达到同样效果，其励磁电流主要集中某一个非零的中心电流值附近。所以本实用新型具有节约能源的功效。
The utility model relates to a magnetorheological fluid semi-active shock absorber with failure self-protection function. It includes a liquid storage cylinder assembly with permanent magnets on the inside, outside or end of the piston or cylinder. Because the utility model adopts the permanent magnet, it has the following advantages: 1. Since the permanent magnet can generate a magnetic field, the magnetorheological fluid can also generate the central damping force during normal operation when no current is applied or when the control device breaks down , so that the performance of the shock absorber is reliable and stable, and the loss caused by the power failure of the existing magneto-rheological fluid semi-active shock absorber is avoided or reduced. 2. Since the magnetic field generated by the permanent magnet enables the magnetorheological fluid to generate the central damping force during normal operation, the excitation current of the shock absorber during operation is mainly concentrated near the zero current value, and if the existing shock absorber wants to achieve the same As a result, the excitation current is mainly concentrated near a certain non-zero center current value. Therefore, the utility model has the effect of saving energy.
Description
Technical field
The utility model relates to damping device, relates in particular to a kind of magnetic rheological liquid semi-active damper with inefficacy self-protecting function.
Background technique
Characteristics such as at present, magnetic rheological liquid semi-active damper is owing to have that damping force is big, regulation range is wide, and the fast and operating temperature range of speed of response is big and paid close attention to widely and study.Existing magnetic rheological liquid semi-active damper roughly is divided into built-in and external two classes by the position that is provided with of field coil, and built-in is that field coil is located on the piston, and external is that field coil is located at the cylinder barrel outside.Thereby can change the magnetic intensity that is applied on the magnetic flow liquid is controlled the magnetic flow liquid generation with the viscosity that changes magnetic flow liquid damping force by the curtage intensity of controlling by field coil.In order to increase the damping force controlled range, it is smaller that the zero current damping force of magnetic rheological liquid semi-active damper often designs.The damping force that magnetic rheological liquid semi-active damper produces in a rational vibration damping equipment of design/type selecting mainly concentrates near a certain center damping force between maximum, the minimum damping force.Bring two problems thus:
Field current when 1, magnetic rheological liquid semi-active damper is worked mainly concentrates near the center current value of some non-zeros, and energy consumption is bigger;
2, when the magnetic flow liquid control system breaks down, electric current can not in time be supplied, and then magnetic flow liquid can not produce enough damping forces, has reduced the Security and the travelling comfort that need vibration damping equipment, i.e. defective shock absorber.
Summary of the invention
The purpose of this utility model provide a kind of simple in structure, energy consumption is low and still can provide the magnetic rheological liquid semi-active damper with inefficacy self-protecting function of enough damping forces for zero the time at defective shock absorber or field current.
It comprises the liquid container assembly; in the liquid container assembly, be provided with piston assembly; floating piston; piston assembly has suspension piston rod link; piston rod and piston; piston rod and liquid container inter-module are provided with the pilot seal assembly; the pilot seal assembly has guide bush; upper press cover; guider; seal ring; suspension piston rod link has suspension ring; suspension ring lining and liner; floating piston has floating piston body and O type circle; the liquid container assembly has cylinder body and end cap, and the outside, liquid container assembly rear end has suspension cylinder body link, and suspension cylinder body link has suspension ring; suspension ring lining and liner; piston has magnetic core; toroidal core; field coil; magnetic conduction protective layer not; the magnetic conduction sleeve; piston ring is in the inboard of piston or cylinder barrel; the outside or end are provided with permanent magnet.
The utility model adopts the part of permanent magnet as the vibration damper magnetic circuit, and the magnetic field that utilizes permanent magnet to produce makes the center damping force when magnetic flow liquid also can produce proper functioning under not having the situation of impressed current, makes the stable and reliable for performance of vibration damper.
The utility model has been owing to adopted permanent magnet, thereby has following advantage:
1, because permanent magnet can produce magnetic field, so when not applying electric current or control gear when breaking down, center damping force when magnetic flow liquid also can produce proper functioning, make that the reliable performance of vibration damper is stable, avoid or reduced the loss that existing magnetic rheological liquid semi-active damper causes owing to disconnection fault.
Center damping force when 2, the magnetic field that produces owing to permanent magnet makes magnetic flow liquid produce proper functioning, field current when therefore vibration damper is worked mainly concentrates near the zero current value, and having vibration damper now if want to reach effect same, its field current is mainly concentrated near the center current value of some non-zeros.So the utlity model has the effect of energy saving.
Description of drawings
Fig. 1 is the magnetic rheological liquid semi-active damper structural representation with inefficacy self-protecting function;
Fig. 2 is the utility model piston assembly structure schematic representation;
Fig. 3 (a) is the magnetic field schematic representation of the magnetic direction of the magnetic direction that produces of field current and permanent magnet when consistent;
Fig. 3 (b) is the magnetic field schematic representation of the magnetic direction of the magnetic direction that produces of field current and permanent magnet when opposite;
Fig. 3 (c) is that field current is zero or the magnetic field schematic representation of the other reasons magnetic intensity that causes field coil to produce when being zero.
Embodiment
Solution of the present utility model is as follows:
Magnetic rheological liquid semi-active damper with inefficacy self-protecting function comprises piston rod, piston assembly, electromagnetic coil, permanent magnet, cylinder barrel etc., and permanent magnet is set in magnetic circuit, under same operating conditions:
(1) when the magnetic direction of the direction in the magnetic field that field coil produces and permanent magnet was identical, the magnetic intensity that is applied on the magnetic flow liquid increased, the damping force increase that vibration damper produces;
(2) when the magnetic direction of the direction in the magnetic field that field coil produces and permanent magnet is opposite, be applied to that magnetic intensity on the magnetic flow liquid weakens even be zero, the damping force of vibration damper generation also reduces accordingly;
(3) when the field coil electric current be zero or the other reasons magnetic intensity that causes field coil to produce when being zero, the damping force that vibration damper produces is fixed on certain by the magnetic direction of permanent magnet and particular value of intensity decision.
Permanent magnet can be located at inboard, the outside or the end of piston assembly, also can be located at inboard, the outside or the end of cylinder barrel.
As shown in Figure 1, 2, has the magnetic rheological liquid semi-active damper of inefficacy self-protecting function by suspension ring 1 and 18, liner 3 and 19, suspension ring lining 2 and 20; suspension ring connecting thread 4, guide bush 5, upper press cover 6; guider 7, seal ring 8, piston rod 9; cylinder barrel 10, field coil lead 11, magnetic flow liquid 12; piston assembly 13, floating piston 14, O type circle 15; pressurized gas 16, end cap 17 compositions such as grade are as Fig. 1.Piston assembly by magnetic core 131, toroidal core 133, permanent magnet 134, field coil 135, magnetic conduction protective layer 136, magnetic conduction sleeve 137, piston ring 138 etc. are not formed, as Fig. 2.Be provided with the connecting thread 130 that is connected usefulness with piston rod 9 on magnetic core 131, field coil lead 11 is connected on the field coil 135 by the hollow passageway on the magnetic core 131.Permanent magnet 134 and toroidal core 133 are enclosed within magnetic core 131; be wound with field coil 135 in the outside of permanent magnet 134; the outside of field coil 135 is provided with not magnetic conduction protective layer 136; magnetic conduction protective layer 136 does not separate coil and magnetic flow liquid, prevents to destroy because of the polishing action of magnetic flow liquid the isolation layer of field coil 135.Magnetic conduction sleeve 137 is used for forming magnetic loop with magnetic core 131 and toroidal core 133 in conducting magnetic field.Form an annulus between magnetic conduction sleeve 137 and magnetic core 131 and the toroidal core 133, with the circulation magnetic flow liquid.Magnetic conduction sleeve 137 and magnetic core 131,133 of toroidal cores respectively have 4 soldering points 132, make them to move together.Magnetic conduction sleeve 137 and magnetic core 131,133 of magnetic conduction protective layers 136, toroidal core form annulus 139.The outside of magnetic conduction sleeve 137 is provided with groove, is provided with piston ring 138 in the groove.Piston ring 138 has guiding and seal action, makes piston assembly to slide in cylinder barrel 10, stops magnetic flow liquid from cylinder barrel 10 and 137 leakages of magnetic conduction sleeve again simultaneously.
Working procedure of the present utility model is: when piston rod 9 drove piston assemblys 13 and does relative movement with cylinder barrel, magnetic flow liquid 12 139 flow through from the annulus.When field coil 135 passes through electric current, can in annulus 139, form magnetic field.When magnetic flow liquid 12 flow through annulus 139, the rheological equationm of state of magnetic flow liquid 12 changed with changes of magnetic field, thereby changed the size of output damping force.
Under same operating mode:
When 1, the magnetic direction that produces by electric current when field coil 135 was consistent with the magnetic direction of permanent magnet 134, the magnetic intensity in the annulus 139 was strengthened, as Fig. 3 (a).The also corresponding increase of damping force of vibration damper output this moment.
When 2, the magnetic direction of magnetic direction that produces by electric current when field coil 135 and permanent magnet 134 was opposite, the magnetic intensity in the annulus 139 obtained weakening, as Fig. 3 (b).Also corresponding the reducing of damping force of vibration damper output this moment.
3, the electric current that passes through when field coil 135 is zero or the other reasons magnetic intensity that causes field coil 135 to produce when being zero, and the magnetic intensity in the annulus 139 is fixed on certain fixed value by permanent magnet 134 decisions, as Fig. 3 (c).The damping force that this moment, vibration damper produced also is fixed on certain particular value.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520100348 CN2763635Y (en) | 2005-01-27 | 2005-01-27 | Magnetorheological semi-active shock-damper with failure self-protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520100348 CN2763635Y (en) | 2005-01-27 | 2005-01-27 | Magnetorheological semi-active shock-damper with failure self-protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2763635Y true CN2763635Y (en) | 2006-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520100348 Expired - Fee Related CN2763635Y (en) | 2005-01-27 | 2005-01-27 | Magnetorheological semi-active shock-damper with failure self-protection function |
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| CN (1) | CN2763635Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221066A (en) * | 2010-04-13 | 2011-10-19 | 北京京西重工有限公司 | Magneto rheological device with permanent magnet bias field |
| CN103912621A (en) * | 2014-04-28 | 2014-07-09 | 浙大新剑（上海）智能技术有限公司 | Double-output rod magneto-rheological fluid washing machine damping absorber and manufacturing method thereof |
| CN105020302A (en) * | 2015-07-28 | 2015-11-04 | 安徽工程大学 | a brake |
| CN106051026A (en) * | 2016-07-26 | 2016-10-26 | 江西科技学院 | Automobile magneto-rheological damper |
| CN107407303A (en) * | 2015-03-20 | 2017-11-28 | Ｋｙｂ株式会社 | Single acting hydraulic cylinder |
| CN108561486A (en) * | 2018-04-23 | 2018-09-21 | 福州大学 | A kind of novel anti-settling magnetic rheological liquid damper |
-
2005
- 2005-01-27 CN CN 200520100348 patent/CN2763635Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221066A (en) * | 2010-04-13 | 2011-10-19 | 北京京西重工有限公司 | Magneto rheological device with permanent magnet bias field |
| CN102221066B (en) * | 2010-04-13 | 2015-03-04 | 北京京西重工有限公司 | Magneto rheological device with permanent magnet bias field |
| CN103912621A (en) * | 2014-04-28 | 2014-07-09 | 浙大新剑（上海）智能技术有限公司 | Double-output rod magneto-rheological fluid washing machine damping absorber and manufacturing method thereof |
| CN103912621B (en) * | 2014-04-28 | 2016-04-27 | 浙大新剑（上海）智能技术有限公司 | A kind of two outstretch pole magnetorheological liquid washing machine damping shock absorber and manufacture method thereof |
| CN107407303A (en) * | 2015-03-20 | 2017-11-28 | Ｋｙｂ株式会社 | Single acting hydraulic cylinder |
| CN107407303B (en) * | 2015-03-20 | 2020-07-24 | Ｋｙｂ株式会社 | Single-acting hydraulic cylinder |
| CN105020302A (en) * | 2015-07-28 | 2015-11-04 | 安徽工程大学 | a brake |
| CN106051026A (en) * | 2016-07-26 | 2016-10-26 | 江西科技学院 | Automobile magneto-rheological damper |
| CN106051026B (en) * | 2016-07-26 | 2018-05-25 | 江西科技学院 | A kind of automobile using MR damper |
| CN108561486A (en) * | 2018-04-23 | 2018-09-21 | 福州大学 | A kind of novel anti-settling magnetic rheological liquid damper |
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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: 20060308 Termination date: 20100301 |