CN102252095B - Seal method of magnetorheological fluid for elevator magnetorheological fluid brake and seal device - Google Patents
Seal method of magnetorheological fluid for elevator magnetorheological fluid brake and seal device Download PDFInfo
- Publication number
- CN102252095B CN102252095B CN2010101751705A CN201010175170A CN102252095B CN 102252095 B CN102252095 B CN 102252095B CN 2010101751705 A CN2010101751705 A CN 2010101751705A CN 201010175170 A CN201010175170 A CN 201010175170A CN 102252095 B CN102252095 B CN 102252095B
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- Prior art keywords
- magnetic
- magnetorheological fluid
- gap
- seal
- flow liquid
- Prior art date
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- 239000012530 fluid Substances 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 230000004907 flux Effects 0.000 claims abstract description 16
- 230000037250 Clearance Effects 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000035512 clearance Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000011553 magnetic fluid Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000712 assembly Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000006249 magnetic particle Substances 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 230000001771 impaired Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/43—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by magnetic force
Abstract
The invention provides a seal method of a magnetorheological fluid for an elevator magnetorheological fluid brake and a seal device, for solving the problems of magnetorheological fluid leakage and brake failure caused by long-time abrasion in a method adopting the contact seal. The key point of the invention is that the magnetorheological fluid is infused between a rotor and a stator of the brake; and magnetic fields are respectively formed at two ends of the clearance in which the magnetorheological fluid is infused, and the magnetic flux of the magnetic field is limited to meet the condition that the magnetorheological fluid at two ends of the clearance becomes sticky. The invention has the beneficial effects that the infused liquid magnetic fluid is utilized as a seal ring, non-contact seal is realized, abrasion can not happen after long-time use, and the problem of the leakage of the magnetorheological fluid after the damage of the seal ring is solved radically.
Description
Technical field
The present invention relates to encapsulating method and the device of elevator brake, specifically magnetic flow liquid encapsulating method and the seal arrangement on elevator magnetorheological fluid brake.
Background technique
WO2009/032014 discloses a kind of " elevator magnetorheological fluid brake ", and the technical problem that it will solve is: elevator brake is to produce friction between braking frictional plate and Moving plate, and after long-time the use, braking plate is easily frayed.Its technological scheme is: annotate brake fluid in the gap between stator and rotor--magnetic flow liquid (magneto-yheologival fluid).Magnetic flow liquid is a kind of magnetic particle in suspension, for example can be comprised of 85wt% magnetic particle and 15wt% liquid.When elevator moved, when the resultant flux of permanent magnet and hot-wire coil was 0, magnetic flow liquid was liquid, and rotor is turning round without under abrasion state; While by control coil, resultant flux being increased gradually, the viscosity of magnetic flow liquid increases gradually until solidify and become solid, and rotor is fixed, and so goes round and begins again.While because of elevator, moving, magnetic flow liquid is liquid, thus realize that its goal of the invention also must solve sealing problem, otherwise liquid magnetic flow liquid can leak, and causes brake fluid to run off, and then brake failure, and brake failure is fatal problem for elevator.The disclosed seal approach of this article is " sealer 41 is enclosed between rotor 38 and elevator boss rods 36, and between rotor 38 and brake box 40, to prevent brake fluid 30, from chamber, 39 flows out " for this reason.Its Fig. 9 shows that sealer 41 is a kind of rings, when not further illustrating, is generally understood as seal ring, namely adopts way of contact sealing.The defect of seal ring is can damage after long-time wearing and tearing, causes magnetic flow liquid to leak.
Summary of the invention
, in order to solve the magnetic flow liquid leakage problem, the object of the present invention is to provide a kind of magnetic flow liquid encapsulating method and seal arrangement of elevator magnetorheological fluid brake.
The object of the present invention is achieved like this:
One, encapsulating method is:
1, magnetic flow liquid is annotated in the gap between elevator brake rotor and stator;
2, respectively form a magnetic field at the two ends in the gap of injecting magnetic flow liquid, the magnetic flux in this magnetic field forms thick being limited with the magnetic flow liquid at two ends, gap.
Two, use the seal arrangement of above-mentioned encapsulating method setting to be:
The device that forms magnetic field is, at the two ends in the gap of injecting magnetic flow liquid, an annular seal assembly is set respectively, and said annular seal assembly is comprised of enclosed magnet (permanent magnet or coil) and sealed magnetic pole; Black box is fixed on rotor assembly or stator module, and with stator or rotor, leaves gap.
In elevator when operation,, the magnetic flow liquid in whole gap be liquid, but the enclosed magnet at two ends, gap and sealed magnetic pole effect under, the magnetic flow liquid that is positioned at the two ends, gap is remained thick, become seal ring, the liquid magnetic flow liquid in gap is sealed.
Compare with WO2009/032014, the invention has the beneficial effects as follows: it utilizes the magnetic flow liquid self that has injected as seal ring, realize contactless sealing, do not have frayed problem after long-time use, fundamentally solved the problem that the impaired rear magnetic flow liquid of seal ring leaks.
Description of drawings
Further illustrate the present invention and realize seal arrangement of the present invention below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of external rotor, inner stator break.
Fig. 2 is the schematic diagram of Fig. 1 break permanent magnet magnetic flux.
Fig. 3 is the schematic diagram of Fig. 1 brake coil magnetic flux.
Fig. 4 is that Fig. 1 is the schematic diagram of 0 o'clock at the brake clearance resultant flux.
Fig. 5 is the schematic diagram of the magnetic field flux of Fig. 1 seal arrangement.
Fig. 6 is the structural representation of internal rotor, external stator break.
Embodiment
Embodiment one: seal arrangement uses on the break of external rotor, inner stator
Referring to Fig. 1, said stator module is: stator yoke 4, brake coil 18, break permanent magnet 19 and non-magnetic gap 13 and 21 are fixed together with stator support 7.Said rotor assembly is: rotor case 1, rotor rim 2, rotor case baffle plate 3, rotor case back of the body cap 10 are fixed together with transmission shaft 11.Be full of magnetic flow liquid in gap 20 between rotor rim and stator yoke.
Said annular seal assembly is that an annular seal permanent magnet or coil 6 form by radially being clipped between two annular seal magnetic poles 5 and 8, wherein there are one and an above crown in the surface of the first sealed magnetic pole 5, the present embodiment has two crowns 51, for the two-stage sealing, crown 51 leaves gap with stator yoke 4, two annular seal assemblies are separately positioned on the two ends in the gap 20 of injecting magnetic flow liquid, are fixed on rotor case 1.
When coil 18 interior no current, the main flux of permanent magnet 19 as shown in Figure 2.Magnetic flow liquids in this moment gap 20 are magnetized and become thickly, produce braking force between stator yoke 4 and rotor rim 2; When in coil 18, electric current being arranged, the main flux of coil 18 as shown in Figure 3.In gap 20 with the main flux opposite direction of permanent magnet 19.Sense of current and size in control coil 18, the resultant flux of main flux in gap 20 that makes the main flux of coil 18 and permanent magnet 19 are 0 as Fig. 4.This moment, gap 20 interior magnetic flow liquids became fluid because losing magnetization, thereby lost braking force between stator yoke 4 and rotor rim 2.So, during control coil 18 interior no current, be equivalent to the break braking, while in control coil 18, electric current being arranged, be equivalent to releasing of brake.
, referring to Fig. 5, seal the main flux of permanent magnet 6 through the first sealed magnetic pole 5, gap 20, stator yoke 4, the second sealed magnetic pole 8 closures, and at crown 51 places of the first sealed magnetic pole 5, form peakflux densities.Magnetic flow liquid in gap 20, by Local magnetization, forms thick O-ring seals at crown, has stopped up the leakage way of magnetic flow liquid in gap 20, plays seal action.
This example is two-stage single-side sealing structure.While needing larger sealability, can adopt multi-stage sealed or multistage two-side sealing structure.
Embodiment two: seal arrangement uses on the break of external stator, internal rotor
Referring to Fig. 6, said stator module is: stator yoke 21 and 22, brake coil 40 and non-magnetic gap 41 are fixed together with stator support 27.Said rotor assembly is: rotor rim 23, break permanent magnet 37 and axle sleeve 29 are fixed together with transmission shaft 30.Be full of magnetic flow liquid in gap 38 between rotor rim 23 and stator yoke 21.
Said annular seal assembly is that an annular seal permanent magnet or coil 25 form by radially being clipped between two annular seal magnetic poles 24 and 26, two annular seal assemblies are separately positioned on the two ends in the gap 38 of injecting magnetic flow liquid, be fixed on stator support 27, wherein there is a crown 241 on the surface of the first sealed magnetic pole 24, and crown 241 leaves gap with rotor rim 23.
Working method is identical with embodiment one.
Claims (1)
1. the magnetic flow liquid encapsulating method of an elevator magnetorheological fluid brake, is characterized in that: the gap notes magnetic flow liquid between brake rotor and stator; Two ends in the gap of injecting magnetic flow liquid respectively form a magnetic field, and the magnetic flux in this magnetic field forms thick being limited with the magnetic flow liquid at two ends, gap;
The device that forms magnetic field is, at the two ends in the gap of injecting magnetic flow liquid, an annular seal assembly is set respectively, this annular seal assembly is that an annular seal permanent magnet or coil form by radially being clipped between two annular seal magnetic poles, be fixed on rotor case or stator support, wherein there are one and an above crown in the surface of the first sealed magnetic pole, and crown and stator yoke or rotor rim leave gap.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101751705A CN102252095B (en) | 2010-05-18 | 2010-05-18 | Seal method of magnetorheological fluid for elevator magnetorheological fluid brake and seal device |
| PCT/CN2011/072725 WO2011143980A1 (en) | 2010-05-18 | 2011-04-13 | Magnetorheological fluid sealing method and device for lift magnetorheological fluid arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101751705A CN102252095B (en) | 2010-05-18 | 2010-05-18 | Seal method of magnetorheological fluid for elevator magnetorheological fluid brake and seal device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102252095A CN102252095A (en) | 2011-11-23 |
| CN102252095B true CN102252095B (en) | 2013-11-13 |
Family
ID=44979569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101751705A Active CN102252095B (en) | 2010-05-18 | 2010-05-18 | Seal method of magnetorheological fluid for elevator magnetorheological fluid brake and seal device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102252095B (en) |
| WO (1) | WO2011143980A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103434911B (en) * | 2013-09-16 | 2015-09-09 | 福州大学 | Based on elevator traction engagement & disengagement braking system and the method and apparatus of magnetic rheology effect |
| CN103935721B (en) * | 2014-03-11 | 2015-06-03 | 中国矿业大学 | Magnetorheological fluid variable damping carrier roller |
| EP3152286B1 (en) | 2014-06-09 | 2020-01-22 | Stepan Company | Detergents for cold-water cleaning |
| CN105540373B (en) * | 2015-12-25 | 2018-06-29 | 辽宁优力安机电设备有限公司 | Use the weighing device and method of magneto-rheologic liquid brake elevator |
| CN105508285B (en) * | 2016-01-28 | 2017-12-15 | 自贡兆强环保科技股份有限公司 | A kind of single-stage high-speed centrifugal air blower magnetic liquid sealing structure |
| CN106224556B (en) * | 2016-05-25 | 2018-03-13 | 广西科技大学 | A kind of more magnetic source end-surface type magnetic fluid seal devices |
| CN106907486B (en) * | 2017-03-09 | 2019-02-19 | 石家庄铁道大学 | The controllable compound sealing device and encapsulating method of sealing are driven for tunneling owner |
| CN109462295A (en) * | 2018-11-09 | 2019-03-12 | 重庆东渝中能实业有限公司 | Stepper motor |
| CN111173932B (en) * | 2020-02-15 | 2022-06-21 | 重庆工商大学 | Pressure self-adaptation sealing device based on magnetic fluid |
| CN111677955B (en) * | 2020-05-18 | 2021-12-28 | 温州洲昂卫浴有限公司 | Rotary joint for kitchen L-shaped faucet |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2389259Y (en) * | 1999-09-24 | 2000-07-26 | 甘肃工业大学 | Spiral tooth magnetic fluid sealing mechanism |
| CN2391058Y (en) * | 1999-06-04 | 2000-08-09 | 北京航空航天大学 | Combined sealing device |
| CN2659492Y (en) * | 2003-12-05 | 2004-12-01 | 中国科学技术大学 | Combined magnetic rheopetic rotary damper |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07305777A (en) * | 1994-05-11 | 1995-11-21 | Nippon Ferrofluidics Kk | Conductive magnetic fluid seal device |
| US5842547A (en) * | 1996-07-02 | 1998-12-01 | Lord Corporation | Controllable brake |
| JP2008069858A (en) * | 2006-09-14 | 2008-03-27 | Kayaba Ind Co Ltd | Magnetrheologcal fluid shock absorber |
| AT538062T (en) * | 2007-09-07 | 2012-01-15 | Otis Elevator Co | LIFT BRAKE WITH MAGNETO-RHEOLOGICAL LIQUID |
| CN101225859A (en) * | 2007-12-30 | 2008-07-23 | 江苏技术师范学院 | Magneto-rheologic liquid brake |
| CN201170318Y (en) * | 2008-03-29 | 2008-12-24 | 张烨 | Magnetofluid O-shaped sealing ring |
| CN201722034U (en) * | 2010-05-18 | 2011-01-26 | 张安戈 | Gearless tractor adopting magnetorheological fluid brake |
| CN201714985U (en) * | 2010-05-18 | 2011-01-19 | 张安戈 | Magnetorheological fluid sealing device of elevator magnetorheological fluid brake |
-
2010
- 2010-05-18 CN CN2010101751705A patent/CN102252095B/en active Active
-
2011
- 2011-04-13 WO PCT/CN2011/072725 patent/WO2011143980A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2391058Y (en) * | 1999-06-04 | 2000-08-09 | 北京航空航天大学 | Combined sealing device |
| CN2389259Y (en) * | 1999-09-24 | 2000-07-26 | 甘肃工业大学 | Spiral tooth magnetic fluid sealing mechanism |
| CN2659492Y (en) * | 2003-12-05 | 2004-12-01 | 中国科学技术大学 | Combined magnetic rheopetic rotary damper |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平7-305777A 1995.11.21 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102252095A (en) | 2011-11-23 |
| WO2011143980A1 (en) | 2011-11-24 |
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Owner name: LIAONING YOULI AN ELECTROMECHANICAL EQUIPMENT CO., Free format text: FORMER OWNER: SHENYANG YOULI MACHINERY EQUIPMENT CO., LTD. Effective date: 20140514 |
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Effective date of registration: 20140514 Address after: 112611 Liaoning province Tieling County Industrial Park of Shenyang Economic Zone Yi Road Park South Ring Road No. 1 Patentee after: LIAONING YOULI'AN ELECTROMECHANICAL EQUIPMENT CO., LTD. Address before: 110135, 25, four street, Shenbei New Area, Liaoning, Shenyang Patentee before: Shenyang Youli Machinery & Electrical Equipment Co., Ltd. |
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Application publication date: 20111123 Assignee: LIAONING YOULI'AN ELECTROMECHANICAL EQUIPMENT CO., LTD. Assignor: Shenyang Youli Machinery & Electrical Equipment Co., Ltd. Contract record no.: 2014210000034 Denomination of invention: Seal method of magnetorheological fluid for elevator magnetorheological fluid brake and seal device Granted publication date: 20131113 License type: Exclusive License Record date: 20140504 |
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