CN102588499A - Ultralong-stroke magnetorheological damper - Google Patents
Ultralong-stroke magnetorheological damper Download PDFInfo
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- CN102588499A CN102588499A CN2012100514487A CN201210051448A CN102588499A CN 102588499 A CN102588499 A CN 102588499A CN 2012100514487 A CN2012100514487 A CN 2012100514487A CN 201210051448 A CN201210051448 A CN 201210051448A CN 102588499 A CN102588499 A CN 102588499A
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- damping
- damping block
- chute
- damper
- block
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Abstract
The invention discloses an ultralong-stroke magnetorheological damper, which comprises sliding chutes, damping wheels, a damping block and a damping rod. The cross section of each sliding chute is U-shaped, two magnetorheological elastomer layers are fixed on the inner surfaces of two vertical sides of each U-shaped sliding chute, the longitudinal section of the damping block is in the shape of a Chinese character of 'wang', an excitation coil is wound on the damping block, a semicircular groove is arranged in the middle of each of six branch end faces of the damping block, the axis of each semicircular groove is perpendicular to the length direction of the sliding chutes, the diameter of each semicircular groove is larger than that of each damping wheel, the damping wheels are mounted in the semicircular grooves, one end of the damping rod is fixed with the damping block, the damping block is mounted in the sliding chutes, and the length of the sliding chutes is unlimited in length.
Description
Technical field
The invention belongs to a kind of damper, be specifically related to a kind of overlength stroke MR damper.
Background technique
Existing is that single rod or two outstretch pole magnetorheological damper all are that piston is placed in the clutch release slave cylinder that has been full of magnetic flow liquid; Adjust the output damping force of its piston rod through the viscosity of magnetic flow liquid in the electromagnetic field change clutch release slave cylinder; Because the length of its clutch release slave cylinder is difficult to do length; Therefore, the stroke of the MR damper of piston and this structure of clutch release slave cylinder is difficult to significantly improve.
Summary of the invention
Be difficult to the deficiency aspect the significantly raising to existing MR damper in working stroke, the present invention proposes brand-new MR damper, that is: a kind of overlength stroke MR damper.
Technological scheme of the present invention is following: a kind of overlength stroke MR damper, and it comprises: chute, six damping rollers, damping block and damper rods; The cross section of chute is a U-shaped, has all fixed one deck magnetic rheology elastic body at the internal surface of two vertical edges of U-shaped chute; The longitudinal section of damping block is king's font; On damping block, be wound with field coil; All there is a semicircular groove at middle part at six branch end faces of damping block, and the shaft axis of semi-circular recesses is vertical vertical with damping block, and the diameter of semi-circular recesses is greater than the diameter of damping roller; Six damping rollers are installed in the semi-circular recesses at six branch end faces middle parts of damping block; One end and the damping block of damper rod are fixed; Damping block is installed in the chute; The width of damping block is less than the spacing between the magnetic rheology elastic body on two vertical edge internal surfaces of chute; Width on six branch end faces of damping block between the damping roller is greater than the spacing between the magnetic rheology elastic body on two vertical edge internal surfaces of chute, and the width on six branch end faces of damping block between the damping roller is less than the spacing between two vertical edges of chute; Damper rod has central through bore; The lighting outlet of field coil leads to outside the chute through the center hole of damper rod on the damping block; The bottom of damper rod and U-shaped chute is made up of non-magnet_conductible material, and two vertical edges, damping block and the damping roller of chute constitute by permeability magnetic material, and the length of chute is not limit.
Function of the present invention be achieved in that since the width of damping block less than the spacing between the magnetic rheology elastic body on two vertical edge internal surfaces of chute; Width on six branch end faces of damping block between the damping roller is greater than the spacing between the magnetic rheology elastic body on two vertical edge internal surfaces of chute; Width on six branch end faces of damping block between the damping roller is less than the spacing between two vertical edges of chute; So; When damper rod drive damping block slides in chute; Magnetic rheology elastic body on two vertical edge internal surfaces of damping block will be flattened by the damping roller on six branch end faces of damping block, will receive certain damping force thereby damper rod is driven when damping block slides in chute; When field coil does not have electric current to pass through on damping block; There is not the magnetic line of force to pass through the magnetic rheology elastic body on two vertical edge internal surfaces of chute; Therefore; The elasticity of the magnetic rheology elastic body on two vertical edge internal surfaces of chute is less; Magnetic rheology elastic body on the damping block on two vertical edge internal surfaces of damping roller roll extrusion chute will receive less pressure, and damping force suffered when damper rod drive damping block is slided in chute is less, and the magnetic rheology elastic body on two vertical edge internal surfaces of chute returns to normal after being flattened by the damping roller immediately; After field coil on the damping block feeds electric current; Damping block will generate an electromagnetic field; Because of two vertical edges, damping block and the damping roller of chute constitutes by permeability magnetic material; So the magnetic line of force that the damping block electromagnetic field produces can pass through two vertical edges of six branch ends, the magnetic rheology elastic body on two the vertical edge internal surfaces of damping roller, chute on six branch ends of damping block end face and the chute of damping block, damping block and form closed magnetic circuit; When damper rod drive damping block slides in chute; The electromagnetic field that damping block produces will move in chute along with the slip forward or backward of damping block forward or backward; Make the ferromagnetic particle in the end face that is in six branch ends of damping block and the damping roller on six branch ends of damping block end face and the magnetic rheology elastic body between two vertical edge internal surfaces of chute form chain or column aggregated structure and make its elasticity higher and " curing " at magnetic direction; Therefore; When the damping roller on six branch ends of damping block end face will receive bigger pressure when the magnetic rheology elastic body of " curings " on two vertical edge internal surfaces of roll extrusion chute, damping force suffered when damper rod drive damping block is slided in chute is bigger, and the magnetic rheology elastic body on two vertical edge internal surfaces of chute by the damping roller roll extrusion on six branch ends of damping block end face flat after; Owing to the influence of the electromagnetic field of six branch ends of dampened piece end face is difficult to return to normal immediately,, six branch ends of damping block end face just can return to normal after removing this zone and have only; If damping block reciprocatingly slides in chute; The magnetic rheology elastic body that has then returned to normal on two vertical edge internal surfaces of chute will (be slipped over the electromagnetic field of the damping block that comes) " curings " once more and by damping roller roll extrusion on six branch ends of damping block end face again, reciprocating like this.
Compare with existing MR damper; Because of the working stroke of overlength stroke MR damper does not receive the restriction of clutch release slave cylinder length in traditional MR damper can reach random lengths; Therefore; Overlength stroke MR damper has not only been expanded existing The Applications of Magnetorheological Dampers field greatly, but also the using scope of MR damper is expanded.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is that the A of Fig. 1 is to sectional view.
Dotted line among Fig. 3 is the schematic representation that electromagnetic field formed closed magnetic circuit after field coil was switched on the damping block among the present invention.
Fig. 4 is the schematic representation of closed magnetic circuit when damping block slides into diverse location among Fig. 3.
Fig. 5 is the working state schematic representation when damping block slides left among the present invention.
Embodiment
Specify structure of the present invention below in conjunction with accompanying drawing:
Referring to Fig. 1 and Fig. 2; This is a kind of concrete structure of the present invention; A kind of overlength stroke MR damper, it comprises: chute 1, the damping roller 2,3,4,15,19 and 23 that is made up of permeability magnetic material, the damping block 13 that is made up of permeability magnetic material and the damper rod 7 that is made up of non-magnet_conductible material; The cross section of chute 1 is a U-shaped, has all fixed one deck magnetic rheology elastic body 6 and 10 at two vertical edges 5 that are made up of permeability magnetic material of U-shaped chute 1 and 11 internal surface; The longitudinal section of damping block 13 is king's font; On damping block 13, be wound with field coil 16 and 20; At six branch end faces 25,26,29,14,18 of damping block 13 and 22 middle part a semicircular groove 21,17,12,28,27 and 24 is arranged all; Semi-circular recesses 21,17,12,28,27 and 24 shaft axis are vertical vertical with damping block 13, and semi-circular recesses 21,17,12,28,27 and 24 diameter are greater than the diameter of damping roller 2,3,4,15,19 and 23; In the semi-circular recesses 21,17,12,28,27 and 24 that damping roller 2,3,4,15,19 and 23 is installed in through the roller bearing at its two ends (see for details: damping roller 2 and 23 mounting type are identical among Fig. 2, damping roller 3,4,15 and 19 mounting type and Fig. 2); One end of damper rod 7 and damping block 13 are fixing; Damping block 13 is installed in the chute 1; The width W 1 of damping block 13 is less than the spacing W4 between the magnetic rheology elastic body 6 and 10 on 1 two vertical edges 5 of chute and 11 internal surfaces; Width W 2 on 13 6 branch end faces of damping block between the damping roller is greater than the spacing W4 between the magnetic rheology elastic body 6 and 10 on 1 two vertical edges 5 of chute and 11 internal surfaces, and the width W 2 on six branch end faces of damping block between the damping roller is less than the spacing W3 between 1 two vertical edges 5 of chute and 11; Damper rod 7 has central through bore 8, on the damping block 13 field coil 17 and 20 lighting outlet 30 center hole 8 through damper rod 7 lead to chute 1 outer with control power supply 31 and be connected, the bottom of U-shaped chute 19 is made up of non-magnet_conductible material, and the length of chute 1 is not limit.
Combine accompanying drawing that a kind of overlength stroke MR damper of the present invention is further described now: referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5; At control power supply 31 not on damping block 13 when field coil 17 and 20 output currents; There is not the magnetic line of force to pass through the magnetic rheology elastic body 6 and 10 on 1 two vertical edges 5 of chute and 11 internal surfaces; Therefore; Magnetic rheology elastic body 6 on 1 two vertical edges 5 of chute and 11 internal surfaces and 10 elasticity are less; Magnetic rheology elastic body 6 and 10 on the damping block 13 on damping roller 2,3,4,15,19 and 1 two vertical edges 5 of 23 roll extrusion chutes and 11 internal surfaces will receive less pressure; Damping force suffered when making damper rod 7 drive damping blocks 13 in chute 1, to slide left is less, and the magnetic rheology elastic body 6 on 1 two vertical edges 5 of chute and 11 internal surfaces and 10 returns to normal immediately after by damping roller 2,3,4,15,19 and 23 flattenings and (sees for details: Fig. 1); When controlling power supply 31 behind field coil 17 on the damping block 13 and 20 output currents; Damping block 13 will generate an electromagnetic field; Because of two vertical edges 5 and 11, damping block 13 and the damping roller 2,3,4,15,19 and 23 of chute 1 constitutes by permeability magnetic material; So the magnetic line of force that damping block 13 electromagnetic fields produce can through six branch ends 25,26,29,14,18 and 22 of damping block 13, damping block, on six branch ends of damping block end face 1 two vertical edges 5 of damping roller 2,3,4,15,19 and 23, chute and the magnetic rheology elastic body 6 on 11 internal surfaces and 10 and two vertical edges 5 and the 11 formation closed magnetic circuits of chute 1 (see for details: Fig. 3); Make the end face that is in six branch ends of damping block 25,26,29,14,18 and 22 and the damping roller 2,3,4,15,19 on six branch ends of damping block end face and 23 and 1 two vertical edges 5 of chute and 11 internal surfaces between magnetic rheology elastic body 6 and 10 in ferromagnetic particle form chain or column aggregated structure and make its elasticity higher at magnetic direction; When damper rod 7 drive damping blocks 13 slide left in chute 1; The magnetic rheology elastic body 6 that damping roller 2,3,4,15,19 and 23 elasticity on 1 two vertical edges 5 of roll extrusion chute and 11 internal surfaces is higher and will receive bigger pressure at 10 o'clock; Damping force suffered when damper rod 7 drive damping blocks 13 are slided left in chute 1 is bigger; And the magnetic rheology elastic body 6 on 1 two vertical edges 5 of chute and 11 internal surfaces and 10 by the damping roller 2,3,4,15,19 on six branch ends of damping block end face and 23 roll extrusion flat after; Owing to the influence of the electromagnetic field of 13 6 branch ends of dampened piece end face 25,26,29,14,18 and 22 is difficult to return to normal immediately, (see for details: 41 among Fig. 5,42,43,44,45 and 46) and have only after six branch ends of damping block end face is removed this zone just can return to normal; Situation when damper rod 7 drive damping blocks 13 slide to the right in chute 1 is similar with it, repeats no more here.
Claims (4)
1. overlength stroke MR damper, it comprises: chute, six damping rollers, damping block and damper rods is characterized in that: the cross section of said chute is a U-shaped, has all fixed one deck magnetic rheology elastic body at the internal surface of two vertical edges of U-shaped chute; The longitudinal section of said damping block is king's font; On damping block, be wound with field coil; All there is a semicircular groove at middle part at six branch end faces of damping block, and the shaft axis of semi-circular recesses is vertical vertical with damping block, and the diameter of semi-circular recesses is greater than the diameter of damping roller; Said six damping rollers are installed in the semi-circular recesses at six branch end faces middle part of damping block; One end and the damping block of said damper rod are fixed; Said damping block is installed in the chute; The width of damping block is less than the spacing between the magnetic rheology elastic body on two vertical edge internal surfaces of chute; Width on six branch end faces of damping block between the damping roller is greater than the spacing between the magnetic rheology elastic body on two vertical edge internal surfaces of chute, and the width on six branch end faces of damping block between the damping roller is less than the spacing between two vertical edges of chute.
2. a kind of overlength stroke MR damper as claimed in claim 1; It is characterized in that: said damper rod has central through bore; The lighting outlet of field coil leads to outside the chute through the center hole of damper rod on the damping block, and the bottom of said damper rod and U-shaped chute is made up of non-magnet_conductible material.
3. a kind of overlength stroke MR damper as claimed in claim 1 is characterized in that: two vertical edges of said chute, damping block and six damping rollers constitute by permeability magnetic material.
4. a kind of overlength stroke MR damper as claimed in claim 1, it is characterized in that: the length of said chute is not limit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100514487A CN102588499A (en) | 2012-03-01 | 2012-03-01 | Ultralong-stroke magnetorheological damper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100514487A CN102588499A (en) | 2012-03-01 | 2012-03-01 | Ultralong-stroke magnetorheological damper |
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| CN102588499A true CN102588499A (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100514487A Pending CN102588499A (en) | 2012-03-01 | 2012-03-01 | Ultralong-stroke magnetorheological damper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108081246A (en) * | 2017-12-29 | 2018-05-29 | 刘素杰 | A kind of artificial-muscle device and its driving method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3696891A (en) * | 1970-10-29 | 1972-10-10 | Hartwell Corp The | Energy absorbing device |
| US3820634A (en) * | 1973-08-10 | 1974-06-28 | Hartwell Corp | Shock resisting energy absorbing device |
| US4583621A (en) * | 1983-04-08 | 1986-04-22 | Industrie Pirelli S.P.A. | Differentiated action oscillation damping device |
| US6394239B1 (en) * | 1997-10-29 | 2002-05-28 | Lord Corporation | Controllable medium device and apparatus utilizing same |
| US20030102193A1 (en) * | 2001-11-30 | 2003-06-05 | Edmondson Jeremy R. | Magnetorheological fluid-controlled vehicle suspension damper |
| CN101382177A (en) * | 2008-10-15 | 2009-03-11 | 重庆大学 | Two-channel magnetorheological damper with passage gating capability |
| CN202441804U (en) * | 2012-03-01 | 2012-09-19 | 谢宁 | Super-long stroke magnetorheological damper |
-
2012
- 2012-03-01 CN CN2012100514487A patent/CN102588499A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3696891A (en) * | 1970-10-29 | 1972-10-10 | Hartwell Corp The | Energy absorbing device |
| US3820634A (en) * | 1973-08-10 | 1974-06-28 | Hartwell Corp | Shock resisting energy absorbing device |
| US4583621A (en) * | 1983-04-08 | 1986-04-22 | Industrie Pirelli S.P.A. | Differentiated action oscillation damping device |
| US6394239B1 (en) * | 1997-10-29 | 2002-05-28 | Lord Corporation | Controllable medium device and apparatus utilizing same |
| US20030102193A1 (en) * | 2001-11-30 | 2003-06-05 | Edmondson Jeremy R. | Magnetorheological fluid-controlled vehicle suspension damper |
| CN101382177A (en) * | 2008-10-15 | 2009-03-11 | 重庆大学 | Two-channel magnetorheological damper with passage gating capability |
| CN202441804U (en) * | 2012-03-01 | 2012-09-19 | 谢宁 | Super-long stroke magnetorheological damper |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108081246A (en) * | 2017-12-29 | 2018-05-29 | 刘素杰 | A kind of artificial-muscle device and its driving method |
| CN108081246B (en) * | 2017-12-29 | 2021-01-15 | 南通市一家人大药房有限公司 | Artificial muscle device and driving method thereof |
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| PB01 | Publication | ||
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Application publication date: 20120718 |