CN101235864A - Shearing type MR fluid shock absorber - Google Patents
Shearing type MR fluid shock absorber Download PDFInfo
- Publication number
- CN101235864A CN101235864A CNA2008100706315A CN200810070631A CN101235864A CN 101235864 A CN101235864 A CN 101235864A CN A2008100706315 A CNA2008100706315 A CN A2008100706315A CN 200810070631 A CN200810070631 A CN 200810070631A CN 101235864 A CN101235864 A CN 101235864A
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- seat board
- piston rod
- shock absorber
- fluid shock
- damping
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Abstract
The invention provides a shear mode magneto-rheological fluid damper which is capable of achieving automatic reset, and comprises a seat board 1, a seat board 2 and a magneto-rheological fluid damper, wherein the magneto-rheological fluid damper is arranged between the seat board 1and the seat board 2, a rubber damping device is arranged between the board plate 1 and the seat board 2, thereby when the seat board 1 and the seat board 2 are arranged on a damping object, the magneto-rheological fluid damper provides a damping effect of real-time adjustable damping coefficient and accurate control for the damping object, the rubber damping device besides provides an additional non-main damping action, the more important is that the magneto-rheological fluid damper is recovered to an initial state, and the whole shear mode magneto-rheological fluid damper is maintained in an ideal working state.
Description
Technical field
The present invention relates to a kind of vibration damping equipment, particularly relate to a kind of shearing type MR fluid shock absorber.
Background technique
At present, the vibration damping equipment of engineering machinery field mainly contains rubber shock absorber and MR fluid shock absorber.Rubber shock absorber is because its damping constant is non-adjustable, and the temperature tolerance of rubber shock absorber, corrosion resistance are poor, can not be adapted to various complex working conditions.Magnetic flow liquid is a kind of novel intellectual material, the different rheological propertieies in different magnetic field of magnetic flow liquid are widely used in it and make damper, break, clutch, burnishing device and hydrovalve etc., the damper structure of being made by magnetic flow liquid is simple, speed of response is fast, low in energy consumption, damping force is big and adjustable continuously, it is a kind of typical controlled fluid damper, in the vibration insulating system of MR damper is installed, by changing the damping constant of damper, can realize half ACTIVE CONTROL of vibration insulating system.But the deficiency of existing MR fluid shock absorber is that it can not realize auto-reset function.
Summary of the invention
The objective of the invention is to design a kind of energy and realize automatically reset shearing type MR fluid shock absorber.
Purpose of the present invention is realized by following technological scheme: a kind of shearing type MR fluid shock absorber, comprise seat board one, seat board two and be located at seat board one and seat board two between MR fluid shock absorber, be provided with the rubber damping device between described seat board one and the seat board two.
Above-mentioned shearing type MR fluid shock absorber, described MR fluid shock absorber comprises damped cylinder, piston rod, field coil and magnetic flow liquid, two circular bulge loops are set on the described piston rod outer side wall at interval, be provided with in the piston rod be used to be communicated with two between the bulge loop the piston rod outer side wall and piston rod to the attachment hole of an end, field coil is set around on two piston rod outer side walls between the bulge loop and its two ends are connected with DC electrical source by attachment hole, piston rod is arranged in the damped cylinder and between forms two damping cavity that are connected, magnetic flow liquid is filled in two damping cavity, damp channel between two damping cavity of the formation of the gap between field coil and the damped cylinder madial wall, described damped cylinder and piston rod are affixed with seat board one and seat board two respectively.
Above-mentioned shearing type MR fluid shock absorber along the circumferential direction is evenly equipped with some directional posts on the outer side wall of described each bulge loop.
Above-mentioned shearing type MR fluid shock absorber, described damped cylinder is connected with seat board two, and is provided with the picture rubber cushion between damped cylinder and the seat board two.
Above-mentioned shearing type MR fluid shock absorber, described rubber damping device and rubber pad are one-body molded.
By adopting the aforementioned techniques scheme, its beneficial effect of the invention is: MR fluid shock absorber and rubber damping device are set between seat board one and the seat board two simultaneously, when described seat board one is located on the vibration damping object with seat board two, described MR fluid shock absorber provides a damping constant Adjustable real-time to the vibration damping object, control accurate damping, and the rubber damping device is except providing an additional non-staple damping function, the more important thing is to make MR fluid shock absorber return to an original state, make whole shearing type MR fluid shock absorber maintain a desirable working state.
Description of drawings
Fig. 1 is embodiment's plan view;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the B-B sectional view of Fig. 1;
Fig. 4 is the left view of Fig. 1;
Fig. 5 is the C-C sectional view of Fig. 4;
Fig. 6 is embodiment's a piston rod plan view;
Fig. 7 be piston rod be equipped with directional post left view;
Embodiment
Referring to figs. 1 to Fig. 7, embodiment discloses a kind of shearing type MR fluid shock absorber, and it comprises upper base plate 1, following seat board 2, piston rod 3, damped cylinder 4, rubber sleeve 5, field coil 6, magnetic flow liquid 7 etc., wherein:
With reference to figure 6, Fig. 7, be arranged at intervals with circular bulge loop 31 and bulge loop 32 on described piston rod 3 outer side walls, be provided with piston rod 3 outer side walls that are used to be communicated with between bulge loop 31 and the bulge loop 32 and the attachment hole 33 of piston rod 3 axial ends in the piston rod 3, field coil 6 promptly is set around on the bulge loop 31 of piston rod 3 and piston rod 3 outer side walls between the bulge loop 32, the two ends of field coil 6 are connected with DC electrical source through attachment hole 33 by lead, piston rod 3 is provided with two passage 34 and the passages 35 that are used to pour into magnetic flow liquid 7, along the circumferential direction evenly offer four counterbores on described bulge loop 31 and the bulge loop 32 respectively, on each counterbore respectively interference fit a directional post 36 is set, and the directional post 36 on two bulge loops along the circumferential direction staggers 45 °.
With reference to figure 1, Fig. 5, the round barrel shape structure that described damped cylinder 4 is a hollow, described piston rod 3 is arranged in the damped cylinder 4, inboard, damped cylinder 4 upper end is provided with end cap 41, be provided with twice " O " type rubber seal 42 between described end cap 41 and the damped cylinder 4, be provided with copper sheathing 43 between described end cap 41 and the piston rod 3, be provided with three roads " V " RunddichtringO 44 between the madial wall of described copper sheathing 43 intermediate shaft holes and piston rod 3 outer side walls, thereby described damped cylinder 4, end cap 41, copper sheathing 43, piston rod 3, bulge loop 31 is formed first damping cavity, described damped cylinder 4 lower ends are provided with copper sheathing 45, be provided with three roads " V " RunddichtringO 46 between described copper sheathing 45 and the piston rod 3, described damped cylinder 4, piston rod 3, bulge loop 32 is formed second damping cavity, gap between field coil 6 and damped cylinder 4 madial walls constitutes the ring damp channel between first damping cavity and second damping cavity, and described magnetic flow liquid 7 injects first damping cavity and second damping cavity by passage 34 and passage 35.
With reference to figure 1, Fig. 3, seat board 2 was affixed under described rubber sleeve 5 both sides reached with upper base plate 1 respectively, the middle part of rubber sleeve 5 and damped cylinder 4 are bonded together damped cylinder 4 is played a relative positioning, be provided with rubber pad between damped cylinder 4 and the following seat board 2, described rubber sleeve 5 is one-body molded with described rubber pad.
Described damped cylinder 4 bottoms are connected with following seat board 2 by rubber pad, described piston rod 3 one ends pass copper sheathing 43 and are connected with upper base plate 1, thereby in the time of on this shearing type MR fluid shock absorber is applied to by the vibration damping object, described damped cylinder 4, piston rod 3, field coil 6, magnetic flow liquid 7 forms a MR fluid shock absorber between upper base plate 1 and following seat board 2, rubber sleeve 5 then forms a rubber damping vibration attenuation device between upper base plate 1 and following seat board 2, thereby the vibration damping equipment that between upper base plate 1 and following seat board 2, has two kinds of different damping performances simultaneously, wherein rubber sleeve 5 plays damping function on the one hand, play a part on the other hand to reset, even MR fluid shock absorber lost efficacy, rubber sleeve 5 still can play the effect of vibration damping.
Technological scheme of the present invention specifically is implemented into to be treated in the vibration insulating system, MR fluid shock absorber respectively by upper base plate and following seat board with treat that vibration damping equipment links to each other, when treating that vibration takes place in the vibration damping equipment running, drive the upper base plate of MR fluid shock absorber, following seat board relatively moves along the cylinder body axial direction of damped cylinder, because upper base plate is connected with piston rod, following seat board is connected with damped cylinder, piston rod relative movement can occur in damped cylinder like this, when field coil passes to direct current on the piston rod, the magnetic circuit part of MR fluid shock absorber will produce magnetic field, under the effect in magnetic field, the viscosity of the magnetic flow liquid in the damped cylinder increases, thereby increase its rigidity, reach the purpose of vibration damping.For different operating modes, make dress sensor thereon produce signal by the vibration for the treatment of vibration damping equipment, by modulus converter A/D the signal of sensor is gathered then, controller calculates the optimal damping power of the required output of vibration damper to the analysis of vibration signal that A/D gathered, damping force model according to vibration damper can calculate the required size of current of field coil easily subsequently, controller is exported control signal corresponding to D/A converting circuit D/A according to the gained parameter, D/A converts digital signal to analogue signal, make this control signal by power amplifier then, make the electric current of field coil obtain optimum value at last.After the electric current of field coil changed, the magnetic intensity that is produced by coil changed thereupon, thereby caused the viscosity respective change of magnetic flow liquid, had finally caused the change of vibration damper output damping force, realized the effect of intelligent vibration damping.
The present invention can be applied in devices such as active, half active damping, vibration isolation widely, in controllable damper and the autonomous traveling vehicle suspension system, and vibratory roller particularly.The present invention also can realize the controlled vibration insulating system of two dimension shearing power by a plurality of combinations.
Claims (5)
1, a kind of shearing type MR fluid shock absorber, comprise seat board one, seat board two and be located at seat board one and seat board two between MR fluid shock absorber, it is characterized in that: be provided with the rubber damping device between described seat board one and the seat board two.
2, shearing type MR fluid shock absorber according to claim 1, it is characterized in that: described MR fluid shock absorber comprises damped cylinder, piston rod, field coil and magnetic flow liquid, two circular bulge loops are set on the described piston rod outer side wall at interval, be provided with in the piston rod be used to be communicated with two between the bulge loop the piston rod outer side wall and piston rod to the attachment hole of an end, field coil is set around on two piston rod outer side walls between the bulge loop and its two ends are connected with DC electrical source by attachment hole, piston rod is arranged in the damped cylinder and between forms two damping cavity that are connected, magnetic flow liquid is filled in two damping cavity, damp channel between two damping cavity of the formation of the gap between field coil and the damped cylinder madial wall, described damped cylinder and piston rod are affixed with seat board one and seat board two respectively.
3, shearing type MR fluid shock absorber according to claim 2 is characterized in that: along the circumferential direction be evenly equipped with some directional posts on the outer side wall of described each bulge loop.
4, according to claim 2 or 3 described shearing type MR fluid shock absorbers, it is characterized in that: described damped cylinder is connected with seat board two, and is provided with the picture rubber cushion between damped cylinder and the seat board two.
5, shearing type MR fluid shock absorber according to claim 4 is characterized in that: described rubber damping device and rubber pad are one-body molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100706315A CN101235864B (en) | 2008-02-04 | 2008-02-04 | Shearing type MR fluid shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100706315A CN101235864B (en) | 2008-02-04 | 2008-02-04 | Shearing type MR fluid shock absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101235864A true CN101235864A (en) | 2008-08-06 |
| CN101235864B CN101235864B (en) | 2011-11-16 |
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ID=39919697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100706315A Expired - Fee Related CN101235864B (en) | 2008-02-04 | 2008-02-04 | Shearing type MR fluid shock absorber |
Country Status (1)
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| CN (1) | CN101235864B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709762A (en) * | 2009-11-20 | 2010-05-19 | 华侨大学 | Magnetic-rheologic rubber shock absorber with corrugated cylindrical surface |
| CN101871504A (en) * | 2010-07-13 | 2010-10-27 | 沈阳长城液压机械制造有限公司 | Electromagnetic variable force shock absorber |
| CN102306997A (en) * | 2011-09-06 | 2012-01-04 | 中国科学院长春光学精密机械与物理研究所 | Micro-displacement actuator for shear mode magnetorheological elastomer |
| CN102658553A (en) * | 2012-05-14 | 2012-09-12 | 重庆绿色智能技术研究院 | Robot and robot arm vibration control and accurate positioning mechanism |
| CN104132091A (en) * | 2014-08-12 | 2014-11-05 | 福建工程学院 | Shearing type double-cylinder magneto-rheological damper |
| CN108119680A (en) * | 2018-01-12 | 2018-06-05 | 中国航发哈尔滨东安发动机有限公司 | A kind of vibration damping pressure regulator valve |
| CN109737153A (en) * | 2019-01-07 | 2019-05-10 | 重庆工程职业技术学院 | Based on magnetorheological controllable type automobile clutch |
| CN112178108A (en) * | 2020-10-22 | 2021-01-05 | 华侨大学 | Controllable hydraulic damper based on magnetorheological rubber |
| CN114871839A (en) * | 2022-06-07 | 2022-08-09 | 哈尔滨理工大学 | Shear type damping vibration attenuation boring bar based on magnetorheological fluid and control method thereof |
-
2008
- 2008-02-04 CN CN2008100706315A patent/CN101235864B/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709762B (en) * | 2009-11-20 | 2014-10-22 | 华侨大学 | Magnetic-rheologic rubber shock absorber with corrugated cylindrical surface |
| CN101709762A (en) * | 2009-11-20 | 2010-05-19 | 华侨大学 | Magnetic-rheologic rubber shock absorber with corrugated cylindrical surface |
| CN101871504A (en) * | 2010-07-13 | 2010-10-27 | 沈阳长城液压机械制造有限公司 | Electromagnetic variable force shock absorber |
| CN102306997A (en) * | 2011-09-06 | 2012-01-04 | 中国科学院长春光学精密机械与物理研究所 | Micro-displacement actuator for shear mode magnetorheological elastomer |
| CN102306997B (en) * | 2011-09-06 | 2012-12-12 | 中国科学院长春光学精密机械与物理研究所 | Micro-displacement actuator for shear mode magnetorheological elastomer |
| CN102658553A (en) * | 2012-05-14 | 2012-09-12 | 重庆绿色智能技术研究院 | Robot and robot arm vibration control and accurate positioning mechanism |
| CN102658553B (en) * | 2012-05-14 | 2014-09-17 | 重庆绿色智能技术研究院 | Robot and robot arm vibration control and accurate positioning mechanism |
| CN104132091A (en) * | 2014-08-12 | 2014-11-05 | 福建工程学院 | Shearing type double-cylinder magneto-rheological damper |
| CN104132091B (en) * | 2014-08-12 | 2016-02-24 | 福建工程学院 | A kind of shearing bitubular magneto-rheological vibration damper |
| CN108119680A (en) * | 2018-01-12 | 2018-06-05 | 中国航发哈尔滨东安发动机有限公司 | A kind of vibration damping pressure regulator valve |
| CN109737153A (en) * | 2019-01-07 | 2019-05-10 | 重庆工程职业技术学院 | Based on magnetorheological controllable type automobile clutch |
| CN109737153B (en) * | 2019-01-07 | 2024-02-27 | 重庆工程职业技术学院 | Controllable clutch for automobile based on magneto-rheological property |
| CN112178108A (en) * | 2020-10-22 | 2021-01-05 | 华侨大学 | Controllable hydraulic damper based on magnetorheological rubber |
| CN114871839A (en) * | 2022-06-07 | 2022-08-09 | 哈尔滨理工大学 | Shear type damping vibration attenuation boring bar based on magnetorheological fluid and control method thereof |
| CN114871839B (en) * | 2022-06-07 | 2023-11-14 | 哈尔滨理工大学 | Magnetorheological fluid shear type damping vibration attenuation boring bar and control method thereof |
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| Publication number | Publication date |
|---|---|
| CN101235864B (en) | 2011-11-16 |
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Granted publication date: 20111116 Termination date: 20120204 |