CN102230507B - Magnetorheological damper with multi-piece piston and single rod - Google Patents
Magnetorheological damper with multi-piece piston and single rod Download PDFInfo
- Publication number
- CN102230507B CN102230507B CN 201110169131 CN201110169131A CN102230507B CN 102230507 B CN102230507 B CN 102230507B CN 201110169131 CN201110169131 CN 201110169131 CN 201110169131 A CN201110169131 A CN 201110169131A CN 102230507 B CN102230507 B CN 102230507B
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- clutch release
- slave cylinder
- release slave
- piston
- working cylinder
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Abstract
The invention discloses a magnetorheological damper with a multi-piece piston and a single rod. The magnetorheological damper consists of a working cylinder, an external electromagnet, a compensating air bag, the multi-piece piston and a piston rod, wherein the multi-piece piston consists of three or more groups of dynamic pieces; each group of dynamic piece has a circular ring form, and consists of a strip flat plate which has a round hole in the center and two semicircular arc flat plates; the circular ring form is formed by respectively connecting one semicircular arc flat plate to one of two parallel straight edges of the strip flat plate which has the round hole in the center by a hinge; the outer diameters of the dynamic pieces are smaller than the inner diameter of the working cylinder; the flowing gaps of magnetorheological liquid are left; the groups of dynamic pieces of the multi-piece piston are fixed at one end of the piston rod at certain intervals through the round holes on the dynamic pieces; the other end of the piston rod is stretched out of the working cylinder through a sealing device and a bearing on the end face of the working cylinder; the compensating air bag is arranged at the bottom in the working cylinder; the external electromagnet is fixed on the external circumference of the working cylinder; the working cylinder is made of a magnetically-nonconductive material; and the magnetorheological liquid is fully filled in the working cylinder.
Description
Technical field
The invention belongs to a kind of MR damper, be specifically related to a kind of Multi-plate piston single rod magnetorheological damper.
Background technique
The damping force that common single outstretch pole magnetorheological damper produces is asymmetrical, therefore, this type of MR damper is usually used in the vibration damping occasion of the means of transportation such as automobile, because common single outstretch pole magnetorheological damper is wound with field coil at its piston, so, when common single outstretch pole magnetorheological damper is worked, piston moves in clutch release slave cylinder, field coil on the piston can be subject to repeatedly washing away of magnetic flow liquid and have a negative impact, and simultaneously common single outstretch pole magnetorheological damper is difficult to do greatly because of the nonsymmetry of the restriction damping force that is subject to self structure.
Summary of the invention
Less and the field coil of the nonsymmetry of the damping force that produces for common single outstretch pole magnetorheological damper can be subject to the deficiency of repeatedly washing away of magnetic flow liquid in clutch release slave cylinder, the present invention proposes a kind of novel MR damper, that is: a kind of Multi-plate piston single rod magnetorheological damper.
Technological scheme of the present invention is as follows:
A kind of Multi-plate piston single rod magnetorheological damper, it comprises clutch release slave cylinder, external electromagnet, the compensation air bag, multi-disc piston and piston rod, multi-disc piston wherein is made of the moving plate more than three groups or three groups, the profile of every group of moving plate is ring, formed by a round-meshed bar-shaped plate in centre and two semicircular arc flat boards, on two of the round-meshed bar-shaped plate in centre parallel straight flanges, to connect respectively the dull and stereotyped formation of a semicircular arc by hinge, the external diameter of moving plate is less than the internal diameter of clutch release slave cylinder and leave the magnetic flow liquid gap of flowing, every group of moving plate of multi-disc piston is fixed on an end of piston rod by certain spacing by the circular hole on it, the other end of piston rod stretches out in clutch release slave cylinder by seal arrangement and the bearing of clutch release slave cylinder end face, the compensation air bag is installed in the bottom in the clutch release slave cylinder, external electromagnet is fixed on the excircle of clutch release slave cylinder, clutch release slave cylinder is made of non-magnet_conductible material, has been full of magnetic flow liquid in clutch release slave cylinder.
The present invention's's (constituting example by three groups of moving plates with the multi-disc piston) function is achieved in that
When piston rod drive multi-disc piston enters in the clutch release slave cylinder, owing to be subject to the damping function of magnetic flow liquid in the clutch release slave cylinder, two semicircular arcs on the moving plate are dull and stereotyped can be towards under the effect of hinge bending occuring with the piston rod opposite direction of advancing, and makes the gap enlargement between multi-disc piston and the clutch release slave cylinder and make piston rod drive the damping force that the multi-disc piston enters clutch release slave cylinder to reduce after the dull and stereotyped bending of two semicircular arcs; In the time of in piston rod drive multi-disc piston is deactivated cylinder, owing to be subject to the damping function of magnetic flow liquid in the clutch release slave cylinder, on the moving plate bending two semicircular arcs dull and stereotypedly can under the effect of hinge, return to dull and stereotyped state towards withdrawing from opposite direction with piston rod, the gap that makes multi-disc piston and clutch release slave cylinder reduces and makes piston rod drive the deactivate damping force increase of cylinder of multi-disc piston.
When the external electromagnet no electric circuit, the magnetic intensity in the clutch release slave cylinder is zero, thereby the magnetic flow liquid viscosity in the clutch release slave cylinder is minimum, and damping force suffered when piston rod drive multi-disc piston moves in clutch release slave cylinder is less; After the external electromagnet energising, the magnetic intensity in the clutch release slave cylinder is higher, makes the magnetic flow liquid viscosity in the clutch release slave cylinder higher, and damping force suffered when piston rod drive multi-disc piston moves in clutch release slave cylinder is larger; The size of current that adjustment enters external electromagnet is the magnitude of field intensity in the capable of regulating clutch release slave cylinder, thereby adjusts the size of piston rod suffered damping force in the clutch release slave cylinder, and the damping force of Multi-plate piston single rod magnetorheological damper output is adjusted.Because the moving plate on the Multi-plate piston single rod magnetorheological damper drives the multi-disc piston in clutch release slave cylinder during back and forth movement at piston rod, hinge on the moving plate can make moving plate change to the bending state or return to dull and stereotyped state from the bending state from dull and stereotyped state, thereby the gap between moving plate and the clutch release slave cylinder is changed, thereby the nonsymmetry of the damping force of Multi-plate piston single rod magnetorheological damper is improved.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is the sectional view of Fig. 1.
Fig. 3 is the schematic representation of one group of moving plate among Fig. 1.
Fig. 4 is the sectional view of Fig. 3.
Fig. 5 is work schematic representation of the present invention.
Fig. 6 is the sectional view of Fig. 5.
Embodiment
Describe structure of the present invention in detail below in conjunction with accompanying drawing:
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, this is a kind of concrete structure of the present invention, and Multi-plate piston single rod magnetorheological damper comprises clutch release slave cylinder 4, external electromagnet 1, compensation air bag 3, the piston rod 14 that is made of non-magnet_conductible material and the multi-disc piston that is made of three groups of moving plates 19; The every group of moving plate 19 that consists of the multi-disc piston is ring, moving plate 19 is comprised of centre bar-shaped plate 17 and two semicircular arc flat boards 7 by circular hole 20, and be on there are two parallel straight flanges of bar-shaped plate 17 of circular hole 20 centre, to connect respectively a semicircular arc dull and stereotyped 7 by hinge 6 to consist of, the external diameter of moving plate 19 is less than the internal diameter of clutch release slave cylinder 4 and leave the magnetic flow liquid gap 18 of flowing, the every group of moving plate 19 that consists of the multi-disc piston is fixed on an end of piston rod 14 by certain spacing by the circular hole 20 on it, the other end of piston rod 14 stretches out in clutch release slave cylinder 4 by seal arrangement 12 and the bearing 13 of clutch release slave cylinder 4 end faces, compensation air bag 3 is installed in the bottom in the clutch release slave cylinder 4, in compensation air bag 3, be filled with pressurized air 2, external electromagnet 1 is fixed on the excircle of clutch release slave cylinder 4, be full of magnetic flow liquid 5 in clutch release slave cylinder 4, control power supply 16 is connected with external electromagnet 1 by lead-in wire 15.
Referring to Fig. 5 and Fig. 6, when driving the multi-disc pistons, piston rod 14 enters clutch release slave cylinder 4 when interior, owing to be subject to the damping function of clutch release slave cylinder 4 interior magnetic flow liquids 5, two semicircular arcs on the moving plate 19 dull and stereotyped 7 can be towards under the effect of hinge 6 bending occuring with the piston rod 14 opposite direction of advancing, after dull and stereotyped 7 bendings of two semicircular arcs, gap 18 between multi-disc piston and the clutch release slave cylinder 4 is enlarged and the damping force that makes piston rod 14 drive multi-disc pistons enter clutch release slave cylinder 4 reduces; And deactivate cylinder 4 when interior when piston rod 14 drives the multi-disc pistons, owing to be subject to the damping function of clutch release slave cylinder 4 interior magnetic flow liquids 5, on the moving plate 19 bending two semicircular arcs dull and stereotyped 7 can under the effect of hinge 6, return to dull and stereotyped state towards withdrawing from opposite direction with piston rod 14, the gap 18 that makes multi-disc piston and clutch release slave cylinder 4 reduces and makes piston rod 14 drive the deactivate damping force increase of cylinder 4 of multi-disc pistons; Adjustment control power supply 16 is transported to the size of current in the external electromagnet 1, be the viscosity of capable of regulating clutch release slave cylinder 4 interior magnetic flow liquids 5, the damping force that piston rod 14 drive multi-disc pistons are subject to when clutch release slave cylinder 4 interior motion changes, and the damping force of Multi-plate piston single rod magnetorheological damper output is adjusted.
Claims (1)
1. Multi-plate piston single rod magnetorheological damper, it comprises clutch release slave cylinder, external electromagnet, the compensation air bag, multi-disc piston and piston rod, it is characterized in that: described multi-disc piston is to be made of the moving plate more than three groups or three groups, described every group of moving plate is ring, formed by a round-meshed bar-shaped plate in centre and two semicircular arc flat boards, on two of the round-meshed bar-shaped plate in centre parallel straight flanges, to connect respectively the dull and stereotyped formation of a semicircular arc by hinge, the external diameter of moving plate is less than the internal diameter of clutch release slave cylinder and leave the magnetic flow liquid gap of flowing, every group of moving plate of described multi-disc piston is fixed on an end of piston rod by certain spacing by the circular hole on it, the other end of piston rod stretches out in clutch release slave cylinder by seal arrangement and the bearing of clutch release slave cylinder end face, the compensation air bag is installed in the bottom in the clutch release slave cylinder, external electromagnet is fixed on the excircle of clutch release slave cylinder, clutch release slave cylinder is made of non-magnet_conductible material, has been full of magnetic flow liquid in clutch release slave cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110169131 CN102230507B (en) | 2011-06-22 | 2011-06-22 | Magnetorheological damper with multi-piece piston and single rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110169131 CN102230507B (en) | 2011-06-22 | 2011-06-22 | Magnetorheological damper with multi-piece piston and single rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102230507A CN102230507A (en) | 2011-11-02 |
| CN102230507B true CN102230507B (en) | 2013-03-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110169131 Expired - Fee Related CN102230507B (en) | 2011-06-22 | 2011-06-22 | Magnetorheological damper with multi-piece piston and single rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102230507B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032511B (en) * | 2013-01-06 | 2015-03-11 | 谢宁 | Combined piston single-rod magnetorheological damper |
| CN105179574A (en) * | 2015-07-19 | 2015-12-23 | 常州大学 | Single-rod multistage-piston active single-control variable-damping magneto-rheological damper |
| CN105065528A (en) * | 2015-07-19 | 2015-11-18 | 常州大学 | Single-pole multi-grade piston adaptive magneto-rheological damper |
| CN105156561A (en) * | 2015-07-20 | 2015-12-16 | 常州大学 | Single-rod multistage-piston passive double-control variable-damping magnetorheological damper |
| CN105156546A (en) * | 2015-07-20 | 2015-12-16 | 常州大学 | Double-rod multistage-piston passive single-control variable-damping magnetorheological damper |
| CN105065557A (en) * | 2015-07-20 | 2015-11-18 | 常州大学 | Active double-control variable-damping magnetorheological damper with single rod and multiple stages of pistons |
| CN105156572A (en) * | 2015-07-20 | 2015-12-16 | 常州大学 | Double-rod multistage-piston passive single-control variable-damping magnetorheological damper |
| CN114321256A (en) * | 2020-09-29 | 2022-04-12 | 汪丽 | Asymmetric damping force magneto-rheological shock absorber piston |
| CN113027987B (en) * | 2021-03-04 | 2022-11-22 | 珠海格力智能装备有限公司 | Vibration damping device and machine tool |
| CN115324982B (en) * | 2022-08-26 | 2024-03-26 | 中国人民解放军海军工程大学 | Self-adaptive hydraulic silencing device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH102369A (en) * | 1996-06-18 | 1998-01-06 | Tokico Ltd | Damper using electroviscous fluid |
| KR100569072B1 (en) * | 2003-10-01 | 2006-04-07 | 현대자동차주식회사 | Shock absorber for vehicle suspension |
| CN202100652U (en) * | 2011-06-22 | 2012-01-04 | 谭和平 | Multi-plate piston single rod magnetorheological damper |
-
2011
- 2011-06-22 CN CN 201110169131 patent/CN102230507B/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| JP特开平10-2369A 1998.01.06 |
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| CN102230507A (en) | 2011-11-02 |
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Granted publication date: 20130313 Termination date: 20130622 |