CN102287476A - Multilayer fixed pole plate fluid type electro-rheological damper - Google Patents
Multilayer fixed pole plate fluid type electro-rheological damper Download PDFInfo
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- CN102287476A CN102287476A CN2011102081245A CN201110208124A CN102287476A CN 102287476 A CN102287476 A CN 102287476A CN 2011102081245 A CN2011102081245 A CN 2011102081245A CN 201110208124 A CN201110208124 A CN 201110208124A CN 102287476 A CN102287476 A CN 102287476A
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Abstract
The invention discloses a multilayer fixed pole plate fluid type electro-rheological damper, which belongs to the technical field of vibration reduction of mechanical and architectural structures. The damper is characterized by comprising a main cylinder (4) and a secondary cylinder (18), wherein a piston (2) is arranged in the main cylinder through a piston rod (1); a plurality of pairs of annular fixed pole plates are arranged in the main cylinder; all the pole plates are subjected to surface micropore sinking treatment by a physical or chemical method; positive plates (5) or negative plates (8) are connected with one another in a penetration way through three positive bolts (6) or negative bolts (9) which are arranged at the equal angle of 120 DEG; the positive bolts (6) or the negative bolts (9) pass through the main cylinder body (4) to be fixedly connected with the main cylinder; and equal-thickness partition sleeves are arranged among all the pole plates. The invention has the effects and advantages that: by the multilayer pole plates which are subjected to surface sinking treatment, the area of a damping channel is increased within limited space, and the slippage between electro-rheological fluid and the surfaces of the pole plates is obviously reduced. The damper has the advantages of simple structure, high response speed, light weight, small volume, high output and the like.
Description
Technical field
The invention belongs to machinery and building structure antivibration area, relate to the application of er material, be specifically related to a kind of electro-rheological fluid damper.The present invention is mainly used in and reduces various machineries or building owing to vibration or impact the destruction that causes.
Background technique
Electro rheological fluids is to be scattered in a kind of suspension that forms in the base fluid by polarisable particle, its viscosity, rheological behaviour can change with electric field strength etc. under the effect of extra electric field, can become viscoelastic fluid, semisolid fluid or even solid by flowing liquid very easily.The theoretical limit of tradition dielectric type electrorheological fluid shear yield strength is 8kPa.Yet in the practical application, need electrorheological fluid to have more intense yield strength or shear strength mostly, so the lower yield strength of dielectric type electrorheological fluid has limited its application prospect.People such as Wen Weijia proposed a kind of novel giant electro-rheological liquid in 2003, and its shear strength surpasses 100kPa under 5kV/mm electric field strength, and this breakthrough is worth to the huge applications that people show electro rheological fluids.
In the process, vibration or impulsive load can have a strong impact on its Security and working life under arms for various buildings or mechanical structure.Structurally install can passive energy dissipation damping device be the effective means that reduces its vibration or shock response, increases its Security and stability.Traditional Passive Control damper (as hydraulic damper) only can provide uncontrollable damping force, and its vibration control effect is undesirable.The intelligent damper that employing electric/magnetic rheological system is equipped with can come by the adjusting to electricity/magnetic intensity to regulate damping force according to operating mode real-time continuous ground, thereby implementation structure vibrates or the active and half ACTIVE CONTROL of impact, prevents the failure damage of structure better.With respect to MR damper, be that the electro-rheological fluid damper of core material has that stability is high, simple in structure, the damping force regulation range big, respond advantages such as fast with the giant electro-rheological body.
According to working principle, electro-rheological fluid damper is divided into shear mode, flow pattern and composite mode.In actual engineering, require electro-rheological fluid damper that bigger damping force can be provided usually, this makes that the electro-rheological fluid damper volume and the quality of employing traditional structural design are bigger.In addition, the slippage between electrorheological fluid and the damper electrode plate has restricted giving full play to of electro rheological fluids performance, causes actual damping force less than theoretical damping power.Therefore, be badly in need of that a kind of volume of exploitation is less, damping force is big, pole plate place does not have slippage, novel electrorheological damper simple in structure, to satisfy the needs of industrial development.
Summary of the invention
The purpose of this invention is to provide a kind of multilayer fixed polar plate flowing type electro-rheological fluid damper, improving relative pole plate area, to eliminate electrorheological fluid and the slippage of pole plate surface of contact, thereby under smaller volume, obtain bigger damping force.
For achieving the above object, technological scheme of the present invention is many ring plate to be carried out the surface crater processing by chemistry or physical method, and alternately is arranged in parallel in Master cylinder body.Positive and negative pole plate is all respectively fixed by 3 bolts and Master cylinder body stack shell, and is connected with the power supply positive and negative electrode respectively through bolt.Be full of electrorheological fluid in the Master cylinder body, each equates the pole plate gap.Cylinder end caps and cylinder body are by being threaded, and liquid filling hole is left to inject electrorheological fluid in end cap top.
Technological scheme of the present invention is as follows: the novel electrorheological damper is characterized in that: include master cylinder cylinder cap 11, master cylinder stack shell 4, front end proof and electric leakage-proof safety ring cowling 14, surface micropore pit positive plate 5, positive pole bolt 6, positive plate divides spacer 7, piston rod 1, piston 2, isolation layer 3, liquid filling hole 13, positive wire hole 12, rear end proof and electric leakage-proof safety ring cowling 17, surface micropore pit negative plate 8, negative pole bolt 9, negative plate to divide spacer 10, negative wire hole 16, dividing plate 15, secondary cylinder 18.Wherein, positive and negative ring pole plate alternating pairs is arranged, and can be designed to more than 2 pairs or 2 pairs according to demand.All positive plates 5 run through connection by 3 positive pole bolts 6 that are 120 ° of isogonisms arrangements, uniform thickness is set between each pole plate divides spacer 7.Positive pole bolt 6 runs through master cylinder stack shell 4 fixedlys connected with master cylinder.Positive wire is connected with in 3 positive pole bolts any one, passes through positive wire hole 12 and connects positive source.Front end proof and electric leakage-proof safety ring cowling 14 and master cylinder front cover 11 are by being threaded.All negative plates 8 run through connection by 3 negative pole bolts 9 that are 120 ° of isogonisms arrangements, uniform thickness is set between each pole plate divides spacer 10.Negative pole bolt 9 runs through master cylinder stack shell 4 fixedlys connected with master cylinder.Cathode conductor is connected with in 3 negative pole bolts any one, passes through negative wire hole 16 and connects power cathode.Rear end proof and electric leakage-proof safety ring cowling 17 and master cylinder dividing plate 15 are by being threaded.Piston rod 1 front end passes master cylinder front cover 11 and extends master cylinder, and the rear end is passed dividing plate 15 and extended to secondary cylinder.Piston stretches out an end of master cylinder cover and the outside of secondary cylinder end head is provided with the earrings that is connected that can link to each other with structure respectively.If cylinder body adopts conductive material making such as metal, with master cylinder 4 contact positions isolation layer is set at positive pole bolt 6, negative pole bolt 9, in case cylinder body is charged.
Described piston rod and piston are circular cross-section; Master cylinder cover, front end and back end proof and electric leakage-proof safety ring cowling, dividing plate, positive/negative plate, the master cylinder stack shell, secondary cylinder barrel body is the ring cross section.The positive/negative plate gap is 1～2mm, and is breakdown with the giant electro-rheological liquid of the pole plate that prevents to flow through in the master cylinder.
Described giant electro-rheological liquid is that 5kV/mm electric field strength down cut intensity reaches the above electrorheological fluid of 50kPa.
Described master cylinder can be different with secondary cylinder size, but need on same axis, and promptly center line and satisfies requirement of strength on same straight line.Secondary cylinder length should be more than or equal to the displacement distance of piston, in order to avoid the excessive and secondary cylinder bottom of piston displacement distance portion bumps.The giant electro-rheological liquid hand-hole is set on master cylinder cover.
Effect of the present invention and benefit are to utilize the shear strength continuous reversible adjustability of giant electro-rheological liquid, according to vibrating or impact the damping force that operating mode provides real-time change, realize active, half active or Passive Control to machinery or building construction vibration.The pole plate of multiple-level surface pit processing has increased the area of damp channel in limited space, and significantly reduce slippage between giant electro-rheological liquid and polar board surface, therefore, its damping force that provides improves greatly, its feature satisfies the engineering demand that small volume is exerted oneself greatly, has practical significance.In a word, this damper have that simple structure, speed of response are fast, light weight, volume little, exert oneself big, low cost and other advantages.
Description of drawings
Fig. 1 is the axial sectional view of multilayer fixed polar plate flowing type electro-rheological fluid damper.
Fig. 2 is a multilayer fixed polar plate flowing type electro-rheological fluid damper transverse sectional view.
Fig. 3 is a multilayer fixed polar plate flowing type electro-rheological fluid damper front end partial enlarged drawing.
Fig. 4 is a multilayer fixed polar plate flowing type electro-rheological fluid damper middle part partial enlarged drawing.
Among the figure: 1 piston rod; 2 pistons; 3 isolation layers; 4 master cylinder stack shells; 5 positive plates; 6 positive pole bolts; 7 positive plates divide spacer; 8 negative plates; 9 negative pole bolts; 10 negative plates divide spacer; 11 master cylinder cylinder caps; 12 positive wire holes; 13 liquid filling holes; 14 front end proof and electric leakage-proof safety ring cowlings; 15 dividing plates; 16 negative wire holes; 17 rear end proof and electric leakage-proof safety ring cowlings; 18 secondary cylinder cylinder bodies.
Embodiment
Be described in detail the specific embodiment of the present invention below in conjunction with technological scheme and accompanying drawing.
The specific embodiment of the present invention is referring to Fig. 1～Fig. 4.Present embodiment mainly comprises master cylinder stack shell 4, master cylinder cover 11, many to surface micropore pit processing positive plate 5 and negative plate 8, dividing plate 15, piston rod 1, piston 2, subsidiary cylinder 18.Wherein, master cylinder stack shell 4, master cylinder cover 11, dividing plate 15 constitute master cylinder, and dividing plate 15, subsidiary cylinder 18 constitute secondary cylinder.The piston 2 that two ends are connected with piston rod 1 is arranged in the master cylinder, and the front end of piston rod 1 passes master cylinder cover 11 and extends master cylinder, can be connected with structure by connecting earrings; The rear end of piston rod 1 is passed dividing plate 15 and is extended to secondary cylinder 18, and 18 ends of secondary cylinder have earrings to be connected with structure.Be provided with manyly to positive/negative plate in master cylinder, form the multiple tracks damp channel, the damping gap is 1～2mm.Positive/negative plate adopts chemistry or physical method, carries out the processing of surface micropore pit.All positive plates 5 are positive pole bolt 6 connections that hexagonal angle distributes by three, and are connected and fixed with master cylinder stack shell 4; 5 of each positive plates are provided with the branch spacer 7 of equal thickness, with the fixed polar plate position, prevent different pole plate contacts; Positive plate 5 guarantees liquid communication apart from master cylinder cover 11 distances 2～10mm; A positive pole bolt 6 is connected with lead, and lead passes with positive source through positive wire hole 12 and is connected.All negative plates 8 are negative pole bolt 9 connections that hexagonal angle distributes by three, and are connected and fixed with master cylinder stack shell 4; 8 of each negative plates are provided with the branch spacer 10 of equal thickness, with the fixed polar plate position, prevent different pole plate contacts; Negative plate 8 guarantees liquid communication apart from dividing plate 15 distances 2～10mm, and a negative pole bolt 9 is connected with lead, and lead passes with power cathode through negative wire hole 16 and is connected.Be full of giant electro-rheological liquid in the master cylinder, master cylinder cover 11 is provided with liquid filling hole 13 to inject giant electro-rheological liquid.Between piston 2 and innermost layer pole plate isolation layer 3 is set.For preventing electric leakage, master cylinder cover 11 and dividing plate 15 be greater than the diameter of Master cylinder body 4, and by the outer bolt 6 and bolt 9 covers are gone into to prevent that bolt from exposing, and the anticreep ring cowling 17 of anticreep ring cowling 14 of front end and rear end is set again positive pole bolt 6 and negative pole bolt 9 are protected fully.If Master cylinder body 4 is made by conductive material, isolation layer is set in case leak-stopping with master cylinder stack shell 4 contact position at positive pole bolt 6, negative pole bolt 9.Secondary cylinder cylinder body 18 length should bump to prevent the excessive and secondary cylinder 18 of piston 2 displacement distances more than or equal to the displacement distance of piston 2.
Claims (7)
1. multilayer fixed polar plate flowing type electro-rheological fluid damper includes master cylinder cylinder cap (11), master cylinder stack shell (4), front end proof and electric leakage-proof safety ring cowling (14), surface micropore pit positive plate (5), positive pole bolt (6), positive plate and divides spacer (7), piston rod (1), piston (2), isolation layer (3), liquid filling hole (13), positive wire hole (12), rear end proof and electric leakage-proof safety ring cowling (17), surface micropore pit negative plate (8), negative pole bolt (9), negative plate to divide spacer (10), negative wire hole (16), dividing plate (15), secondary cylinder (18); It is characterized in that: positive and negative ring pole plate alternating pairs is arranged, and is designed to according to demand more than 2 pairs or 2 pairs; All positive plates (5) run through connection by 3 positive pole bolts (6) that are 120 ° of isogonisms arrangements, uniform thickness is set between each pole plate divides spacer (7); Positive pole bolt (6) runs through master cylinder stack shell (4) fixedlys connected with master cylinder; Positive wire is connected with in 3 positive pole bolts any one, passes through positive wire hole (12) and connects positive source; Front end proof and electric leakage-proof safety ring cowling (14) and master cylinder front cover (11) are by being threaded; The negative pole bolt (9) that all negative plates (8) are arranged by 3 120 ° of isogonisms runs through connection, uniform thickness is set between each pole plate divides spacer (10); Negative pole bolt (9) runs through master cylinder stack shell (4) fixedlys connected with master cylinder; Cathode conductor is connected with in 3 negative pole bolts any one, passes through negative wire hole (16) and connects power cathode; Rear end proof and electric leakage-proof safety ring cowling (17) and master cylinder dividing plate (15) are by being threaded; Piston rod (1) front end passes master cylinder front cover (11) and extends master cylinder, and the rear end is passed dividing plate (15) and extended to secondary cylinder; Piston stretches out an end of master cylinder cover and the outside of secondary cylinder end head is provided with the earrings that is connected that links to each other with structure respectively; When conductive materials such as cylinder body employing metal are made, with master cylinder (4) contact position isolation layer is set at positive pole bolt (6), negative pole bolt (9), in case cylinder body is charged.
2. a kind of multilayer fixed polar plate flowing type electro-rheological fluid damper according to claim 1 is characterized in that: piston rod (1) and piston (2) are circular cross-section; Master cylinder cylinder cap (11), front end proof and electric leakage-proof safety ring cowling (14), rear end proof and electric leakage-proof safety ring cowling (17); dividing plate (15), surface micropore pit positive plate (5), surface micropore pit negative plate (8); master cylinder stack shell (4), secondary cylinder (18) is the ring cross section.
3. a kind of multilayer fixed polar plate flowing type electro-rheological fluid damper according to claim 1 is characterized in that: adopt 2 pairs or 2 pairs with top crown, positive/negative plate is alternately arranged.
4. a kind of multilayer fixed polar plate flowing type electro-rheological fluid damper according to claim 1, it is characterized in that: all pole plates are through the surface crater processing.
5. a kind of multilayer fixed polar plate flowing type electro-rheological fluid damper according to claim 1 is characterized in that: the positive pole bolt (6) that positive plate (5) is arranged by 3 120 ° of isogonisms runs through connection, uniform thickness is set between each pole plate divides spacer (7); Positive pole bolt (6) runs through master cylinder stack shell (4) fixedlys connected with master cylinder; Positive wire is connected with in 3 positive pole bolts any one, passes through positive wire hole (12) and connects positive source.
6. a kind of multilayer fixed polar plate flowing type electro-rheological fluid damper according to claim 1 is characterized in that: negative plate (8) runs through connection by 3 negative pole bolts (9) that are 120 ° of isogonisms arrangements, uniform thickness is set between each pole plate divides spacer (10); Negative pole bolt (9) runs through master cylinder stack shell (4) fixedlys connected with master cylinder; Cathode conductor is connected with in 3 negative pole bolts any one, passes through negative wire hole (16) and connects power cathode.
7. a kind of multilayer fixed polar plate flowing type electro-rheological fluid damper according to claim 1, it is characterized in that: master cylinder cover (11) outer rim exceeds master cylinder stack shell (4), and positive pole bolt (6) cover is gone into wherein; Dividing plate (15) outer rim exceeds master cylinder stack shell (4), and negative pole bolt (9) cover is gone into wherein; The anticreep ring cowling of anticreep ring cowling of front end (14) and rear end (17) is set with bolt (6) and bolt (9) complete closed again, avoids bolt to contact with extraneous.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102081245A CN102287476A (en) | 2011-07-14 | 2011-07-14 | Multilayer fixed pole plate fluid type electro-rheological damper |
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| CN2011102081245A CN102287476A (en) | 2011-07-14 | 2011-07-14 | Multilayer fixed pole plate fluid type electro-rheological damper |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533662A (en) * | 2018-04-23 | 2018-09-14 | 上海大学 | A kind of giant electro-rheological fluid damper |
| CN108571559A (en) * | 2018-07-25 | 2018-09-25 | 上海大学 | A kind of damper means of stiffness variable adaptive damping |
| CN108953466A (en) * | 2018-08-31 | 2018-12-07 | 南京理工大学 | A kind of electro-rheological fluid damper |
| CN108986499A (en) * | 2018-10-19 | 2018-12-11 | 陈轲 | A kind of traffic lights for preventing internal wiring breakage to be broken |
| CN109281962A (en) * | 2018-12-12 | 2019-01-29 | 上海大学 | A kind of brake based on giant electro-rheological liquid shear mode |
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| US5472069A (en) * | 1993-10-27 | 1995-12-05 | The United States Of America As Represented By The Secretary Of The Navy | Vibration damping device |
| CN2531169Y (en) * | 2001-04-13 | 2003-01-15 | 西北工业大学 | Multi-pole plate current damping-changing hinge |
| CN200958546Y (en) * | 2006-10-13 | 2007-10-10 | 北京工业大学 | Trigger-spacing passive damper with current controlling function |
| CN200975034Y (en) * | 2006-10-13 | 2007-11-14 | 北京工业大学 | Double extending rod double cylinder electrical current changeable damper |
| CN202280786U (en) * | 2011-07-14 | 2012-06-20 | 大连理工大学 | Multi-layer fixed polar plate flowing type current electrorheological damper |
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2011
- 2011-07-14 CN CN2011102081245A patent/CN102287476A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5472069A (en) * | 1993-10-27 | 1995-12-05 | The United States Of America As Represented By The Secretary Of The Navy | Vibration damping device |
| CN2531169Y (en) * | 2001-04-13 | 2003-01-15 | 西北工业大学 | Multi-pole plate current damping-changing hinge |
| CN200958546Y (en) * | 2006-10-13 | 2007-10-10 | 北京工业大学 | Trigger-spacing passive damper with current controlling function |
| CN200975034Y (en) * | 2006-10-13 | 2007-11-14 | 北京工业大学 | Double extending rod double cylinder electrical current changeable damper |
| CN202280786U (en) * | 2011-07-14 | 2012-06-20 | 大连理工大学 | Multi-layer fixed polar plate flowing type current electrorheological damper |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533662A (en) * | 2018-04-23 | 2018-09-14 | 上海大学 | A kind of giant electro-rheological fluid damper |
| CN108571559A (en) * | 2018-07-25 | 2018-09-25 | 上海大学 | A kind of damper means of stiffness variable adaptive damping |
| CN108953466A (en) * | 2018-08-31 | 2018-12-07 | 南京理工大学 | A kind of electro-rheological fluid damper |
| CN108986499A (en) * | 2018-10-19 | 2018-12-11 | 陈轲 | A kind of traffic lights for preventing internal wiring breakage to be broken |
| CN109281962A (en) * | 2018-12-12 | 2019-01-29 | 上海大学 | A kind of brake based on giant electro-rheological liquid shear mode |
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Application publication date: 20111221 |