CN1312413C - Permanent-magnet adjusting assembled magnetorheological buffer - Google Patents
Permanent-magnet adjusting assembled magnetorheological buffer Download PDFInfo
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- CN1312413C CN1312413C CNB2005100311088A CN200510031108A CN1312413C CN 1312413 C CN1312413 C CN 1312413C CN B2005100311088 A CNB2005100311088 A CN B2005100311088A CN 200510031108 A CN200510031108 A CN 200510031108A CN 1312413 C CN1312413 C CN 1312413C
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- piston
- outer tube
- guide holder
- interior pipe
- pipe
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present invention discloses an assembled magnetic rheological damper adjusted by permanent magnets. The present invention comprises an outer pipe and an inner pipe, wherein a front end cover and a back end cover are respectively arranged on both ends of the outer pipe, the outer pipe forms into a closed cylinder, one end of the inner pipe forms a piston shape and is sheathed with the outer pipe, the middle section of the inner pipe forms a spline shape, a piston is fixed on the spline section of the inner pipe through tight fit, a throttling hole for magnetic rheological fluid to pass is formed between the spline section and the inner diameter of the piston, the piston divides the outer pipe into two cavities, magnetic rheological fluid is filled in each of the two cavities, a screw is additionally arranged in the inner pipe, and magnetic steel is fixed on the screw. A closed buffer air chamber is formed between the inner pipe and the back end cover of the outer pipe. Both ends of the outer pipe are all provided with a guide holder and a sealing ring, guide rings are arranged on the guide holder and the piston, and the magnetic rheological fluid is arranged between the guide holder and the piston. The present invention can provide damping force through self magnetic rheological fluid with a structure which can be assembled and without a power supply, the damping force is adjusted and controlled by the magnetic steel, and therefore, the present invention has the advantage of simple and practical structure.
Description
Technical field
The present invention is mainly concerned with the damper field, refers in particular to a kind of permanent-magnet adjusting assembled magnetorheological buffer.
Background technique
MR damper is a kind of emerging novel damper, and it is controlled to have a damping, the advantage that volume is little, efficient is high, and market prospects are fabulous.Gong Ying MR damper is the electromagnetism regulating type in the market, as U.S. lord company product, this damper is made up of magnetic flow liquid, piston, coil, outer shell etc., the reciprocal external force that acts on the damper two ends promotes piston, and the magnetic flow liquid at piston two ends back and forth flows by the throttle orifice on the piston.Electric current in coil increases, and the throttle orifice internal magnetic field will strengthen, and the resistance that magnetic current and liquid flow is crossed throttle orifice increases thereupon, make the damping force of damper output increase, otherwise electric current reduces, and damping force also reduces.Therefore be exactly by the adjusting to input current, the i.e. size of may command damper damping force.Because These characteristics, Gong Ying MR damper all requires to dispose reliable power supply system in the market.But when being used for outdoor structures such as bridge and structural seismic when it, inconvenience maybe can not guarantee reliable power supply, thereby has restricted the application of MR damper in these fields.In addition, the MR damper of this monolithic construction of the prior art can't be keeped in repair with the method that parts are replaced in case after wherein certain parts are damaged, will make the very high damper integral body of price scrap, and causes serious waste.In addition, existing on the market magneto damper is directly to provide damping force by magnetic force, and the damper of this project is to provide damping force by magnetic flow liquid, and magnetic force only plays the adjusting control action, so be diverse two series products of principle.
Summary of the invention
The technical problem to be solved in the present invention just is: the technical problem that exists at prior art, but the invention provides a kind of can utilize by magnetic flow liquid damping force is provided and magnetic force rise regulate control action, need not to power and have the permanent-magnet adjusting assembled magnetorheological buffer of assembly structure.
In order to solve the problems of the technologies described above, the solution that the present invention proposes is: a kind of permanent-magnet adjusting assembled magnetorheological buffer, it comprises outer tube and interior pipe, before the two ends of described outer tube are respectively equipped with, rear end cover makes outer tube form airtight cylinder, described interior Guan Yiduan is piston-like and is sheathed in the outer tube, it is characterized in that: the pipe stage casing is a spline type in described, piston is by being tightly fixed at the spline segment of interior pipe, be formed with the throttle orifice that can allow magnetic flow liquid pass through between the spline segment of interior pipe and the piston inner diameter, piston is separated into two cavitys with outer tube inside, is provided with magnetic flow liquid in this cavity; In interior pipe, also be provided with screw rod, be installed with magnet steel on the screw rod.
Form an airtight buffering air chamber in described between the rear end cover of pipe and outer tube.
The front and back ends portion of described outer tube is provided with preceding guide holder, back guide holder and seal ring respectively, and is equipped with guide ring on back guide holder, preceding guide holder and piston; Described magnetic flow liquid then is located between back guide holder and the preceding guide holder.
Compared with prior art, advantage of the present invention just is:
1, permanent-magnet adjusting assembled magnetorheological buffer of the present invention is to provide damping force by magnetic flow liquid, and the magnetic force of magnet steel only plays the adjusting control action in the interior pipe, like this by necessary damping force just can be provided self, do not need to dispose reliable power supply system, during especially for outdoor structures such as bridge and vibration proof structure, can avoid owing to inconvenience maybe can not guarantee the obstacle that power supply reliably causes for the use of damper, and ability simple in structure, with low cost, that can also satisfy very strong carrying demand;
2, permanent-magnet adjusting assembled magnetorheological buffer of the present invention is by well-designed fabricated construction, make whole damper to finish by assembling, brought facility for the replacing of maintenance, damage parts, also avoided scrapping the huge waste of bringing owing to parts damages cause whole damper;
3, manage the position of powerful magnet steel on interior plug screw, screw rod and the screw rod in permanent-magnet adjusting assembled magnetorheological buffer of the present invention is arranged on by adjustment, just can adjust the damping constant and the bearing capacity of this damper easily, easy to use, quick;
4, permanent-magnet adjusting assembled magnetorheological buffer of the present invention remains with certain space and forms the buffering air chamber between the rear end cover of interior pipe and outer tube; thereby to a certain extent whole damper has been played protective action, made it can under the impact of moment of powerful external force, do not destroyed.
Description of drawings
Fig. 1 is that master of the present invention looks cut-away view;
Fig. 2 be among Fig. 1 the A-A face analyse and observe enlarged diagram.
Marginal data
1, rear end cover 2, back guide holder
3, guide ring 4, throttle orifice
5, piston 6, preceding guide holder
7, front cover 8, interior pipe
9, outer tube 10, the fixing nut of magnet steel
11, seal ring 12, magnetic flow liquid
13, magnet steel 14, screw rod
15, plug screw 16, buffering air chamber
Embodiment
Below with reference to accompanying drawing the present invention is described in further details.
Permanent-magnet adjusting assembled magnetorheological buffer of the present invention as depicted in figs. 1 and 2, it comprises outer tube 9 and interior pipe 8, and the two ends of outer tube 9 are respectively equipped with front cover 7 and rear end cover 1 makes outer tube 9 form airtight cylinder, and interior pipe 8 one ends are sheathed in the outer tube 9; The stage casing of interior pipe 8 is a spline type, one piston 5 is by being tightly fixed at the spline segment of interior pipe 8, piston 5 is separated into two cavitys with outer tube 9 inside, is provided with magnetic flow liquid 12 in this cavity, is provided with the throttle orifice 4 that can allow magnetic flow liquid 12 pass through between spline segment on the interior pipe 8 and piston 5 internal diameters; In interior pipe 8, also be provided with screw rod 14, be installed with magnet steel 13 on the screw rod 14.Form an airtight buffering air chamber 16 between the rear end cover 1 of interior pipe 8 and outer tube 9.Be equipped with back guide holder 2, preceding guide holder 6 and seal ring 11 between outer tube 9 tail ends and interior pipe 8 upper pistons 5 and between outer tube 9 front ends and interior pipe 8 upper pistons 5, and on back guide holder 2, preceding guide holder 6 and piston 5, be equipped with guide ring 3; 12 of magnetic flow liquids are located between preceding guide holder 6 and the back guide holder 2.During assembling, at first be pressed into back guide holder 2, seal ring 11, again rear end cover 1 be threaded with outer tube 9 usefulness at outer tube 9 tail ends; Spline type is worn in interior pipe 8 stage casings, and the spline segment of piston 5 by being tightly fixed on interior pipe 8 just formed the throttle orifice 4 that can allow magnetic flow liquid 12 flow in piston 5 front and back like this between spline segment and piston 5 internal diameters; Again interior pipe 8 is inserted outer tube 9, form an airtight buffering air chamber 16 between interior pipe 8 and the rear end cover 1, this buffering air chamber 16 can play a protective role to whole damper to a certain extent, makes it can not destroyed under the impact of moment of powerful external force; Add magnetic flow liquid 12 at front end then, guide holder 6 and seal ring 11 are threaded with outer tube 9 usefulness with front cover 7 again before being pressed into; Permanent-magnet steel 13 then is fixed on the screw rod 14 with the fixing nut 10 of magnet steel, be connected with plug screw 15 on the screw rod 14, screw rod 14 is all used with interior pipe 8 with plug screw 15, plug screw 15 and is threaded, and so just can regulate the front and back position of permanent-magnet steel 13 by rotary screw 14 quickly and easily.
Working principle: during use, when the reciprocal external force at damper two ends promoted piston 5, the magnetic flow liquid 12 at piston 5 two ends just can back and forth flow between the throttle orifice 4 by piston 5 and the formation of interior pipe 8 upper spline sections.In adjusting, manage magnet steel 13 in 8 when moving toward in by screw rod 14 and plug screw 15, the magnetic field in throttle orifice 4 districts will strengthen, the resistance that magnetic flow liquid 12 flows through throttle orifice 4 districts increases thereupon, make the damping force of damper output increase, otherwise, when moving outside the magnet steel 13 in adjusting in the pipe 8, the damping force of output is reduced by screw rod 14 and plug screw 15.Like this, by adjusting, just can control the size of damper damping force quickly and easily to magnet steel 13 positions.
Claims (3)
1, a kind of permanent-magnet adjusting assembled magnetorheological buffer, it comprises outer tube (9) and interior pipe (8), before the two ends of described outer tube (9) are respectively equipped with, rear end cover (7), (1) make outer tube (9) form airtight cylinder, described interior pipe (8) one ends are piston-like and are sheathed in the outer tube (9), it is characterized in that: pipe (8) stage casing is a spline type in described, piston (5) is by being tightly fixed at the spline segment of interior pipe (8), piston (5) is separated into two cavitys with outer tube (9) inside, be provided with magnetic flow liquid (12) in this cavity, be formed with the throttle orifice (4) that can allow magnetic flow liquid (12) pass through between the spline segment of interior pipe (8) and piston (5) internal diameter; In interior pipe (8), also be provided with screw rod (14), be installed with magnet steel (13) on the screw rod (14).
2, permanent-magnet adjusting assembled magnetorheological buffer according to claim 1 is characterized in that: form an airtight buffering air chamber (16) in described between the rear end cover (1) of pipe (8) and outer tube (9).
3, permanent-magnet adjusting assembled magnetorheological buffer according to claim 1 and 2, it is characterized in that: the front and back ends portion of described outer tube (9) is provided with preceding guide holder (6), back guide holder (2) respectively, and the forward and backward end of outer tube is equipped with seal ring (11), and is equipped with guide ring (3) on back guide holder (2), preceding guide holder (6) and piston (5); Described magnetic flow liquid (12) then is located between back guide holder (2) and the preceding guide holder (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100311088A CN1312413C (en) | 2005-01-05 | 2005-01-05 | Permanent-magnet adjusting assembled magnetorheological buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100311088A CN1312413C (en) | 2005-01-05 | 2005-01-05 | Permanent-magnet adjusting assembled magnetorheological buffer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1632345A CN1632345A (en) | 2005-06-29 |
| CN1312413C true CN1312413C (en) | 2007-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100311088A Active CN1312413C (en) | 2005-01-05 | 2005-01-05 | Permanent-magnet adjusting assembled magnetorheological buffer |
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| CN (1) | CN1312413C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956781A (en) * | 2010-10-25 | 2011-01-26 | 重庆瑞翱机电设备有限公司 | Damp self-regulating front damper of motorcycle and manufacturing method thereof |
| CN104989775B (en) * | 2015-07-15 | 2017-03-29 | 安徽工程大学 | Damp adjustable MR damper |
| CN109915308A (en) * | 2017-12-01 | 2019-06-21 | Z光谱创新设计有限责任公司 | A kind of device for the generation energy from wave |
| CN108374862A (en) * | 2018-02-14 | 2018-08-07 | 重庆恩光科技有限公司 | Energy saving and environment friendly single-stage variable damping buffer |
| CN108397508A (en) * | 2018-02-14 | 2018-08-14 | 重庆恩光科技有限公司 | Energy saving and environment friendly magnetorheological fluid twin-stage variable damping device |
| CN110985588B (en) * | 2019-11-15 | 2020-11-20 | 北京控制工程研究所 | Variable damping vibration isolator based on ultrasonic motor adjustment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6360856B1 (en) * | 2001-01-05 | 2002-03-26 | Mando Corporation | Double-tube shock absorber using a hydraulic fluid and a magnetorheological fluid |
| US6419057B1 (en) * | 2001-01-12 | 2002-07-16 | Delphi Technologies, Inc. | Power-off damping in MR damper |
| CN2525303Y (en) * | 2002-01-07 | 2002-12-11 | 欧进萍 | Shear valvetype magnetic flux changing liquid damping driver |
| JP2004270719A (en) * | 2003-03-05 | 2004-09-30 | Bando Chem Ind Ltd | Adjustable damping force type damper |
| CN2658474Y (en) * | 2003-01-10 | 2004-11-24 | 杜彦亭 | Bypass magnetic rheological damper with external magnetic field |
| CN2765003Y (en) * | 2005-01-06 | 2006-03-15 | 湖南大学 | Permanent-magnet adjusting assembled magnetic current variation damper |
-
2005
- 2005-01-05 CN CNB2005100311088A patent/CN1312413C/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6360856B1 (en) * | 2001-01-05 | 2002-03-26 | Mando Corporation | Double-tube shock absorber using a hydraulic fluid and a magnetorheological fluid |
| US6419057B1 (en) * | 2001-01-12 | 2002-07-16 | Delphi Technologies, Inc. | Power-off damping in MR damper |
| CN2525303Y (en) * | 2002-01-07 | 2002-12-11 | 欧进萍 | Shear valvetype magnetic flux changing liquid damping driver |
| CN2658474Y (en) * | 2003-01-10 | 2004-11-24 | 杜彦亭 | Bypass magnetic rheological damper with external magnetic field |
| JP2004270719A (en) * | 2003-03-05 | 2004-09-30 | Bando Chem Ind Ltd | Adjustable damping force type damper |
| CN2765003Y (en) * | 2005-01-06 | 2006-03-15 | 湖南大学 | Permanent-magnet adjusting assembled magnetic current variation damper |
Non-Patent Citations (1)
| Title |
|---|
| 汽车筒式液阻减振器技术的发展 李世民，吕振华，汽车技术，第2001年第8期 2001 * |
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| Publication number | Publication date |
|---|---|
| CN1632345A (en) | 2005-06-29 |
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Effective date of registration: 20160420 Address after: 1610, building 16, room 410205, headquarter building, Changsha Central Power Software Park, 39, pointed mountain road, Changsha hi tech Development Zone, Hunan Patentee after: Hunan province Xiao Vibration Engineering Technology Co Ltd Address before: The wind tunnel laboratory in Hunan province 410082 Changsha Hexi Mount Yuelu Civil Engineering Institute of Hunan University Patentee before: Hunan University |