CN203641377U - Straight magneto-rheological damper with adjustable damping force - Google Patents
Straight magneto-rheological damper with adjustable damping force Download PDFInfo
- Publication number
- CN203641377U CN203641377U CN201420020367.5U CN201420020367U CN203641377U CN 203641377 U CN203641377 U CN 203641377U CN 201420020367 U CN201420020367 U CN 201420020367U CN 203641377 U CN203641377 U CN 203641377U
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- Prior art keywords
- end cap
- cylinder barrel
- main piston
- piston rod
- damping force
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- Expired - Lifetime
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- 238000013016 damping Methods 0.000 title claims abstract description 30
- 239000007788 liquid Substances 0.000 claims description 13
- 239000011148 porous material Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 11
- 238000004804 winding Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims description 2
- 239000000725 suspension Substances 0.000 abstract description 10
- 239000011553 magnetic fluid Substances 0.000 abstract 2
- 239000012530 fluid Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
The utility model discloses a straight magneto-rheological damper with adjustable damping force. The straight magneto-rheological damper comprises a cylinder barrel, a main piston, a piston rod, a coil, a wire, a lower end cove, an upper end cover and an air bag. Two ends of the cylinder barrel are respectively connected with the upper end cover and the lower end cover. The main piston is connected with the piston rod and located in the cylinder barrel. The piston rod penetrates the upper end cover and extends out of the cylinder barrel. The coil winds on the main piston and is connected with the wire. The air bag is located at one end, close to the lower end cover, in the cylinder barrel. A magnetic fluid cavity is formed among the cylinder barrel, the main piston and the air bag. A high pressure gas cavity is formed between the lower end cover and the air bag. High-pressure gas is sealed in the high pressure gas cavity. Magneto-rheological fluid is sealed in the magnetic fluid cavity. The straight magneto-rheological damper is simple in structure, good in manufacturability and seal performance, large in damping force provided, capable of adjusting the damping force, and capable of changing the dynamic characteristics of suspension according to the traveling road conditions and vibration conditions of car bodies so as to improve riding comfortableness and operation stability of cars.
Description
Technical field
The utility model relates to a kind of damper.
Background technique
At present, the damping force of conventional damper is generally that uncontrollable or adjustable amplitude is very little, so will reach optimum effectiveness in vibration suppression, need design for different force status, and cannot tackle the vibration under complex working condition.MR damper is a kind of semi-active damper device based on magnetic rheology effect, control in real time electric current by the input in real time of the field coil to wherein, can produce different damping forces, the size of controlling in real time electric current depends on the excitation of extraneous input, thereby can obtain best effectiveness in vibration suppression.Automotive suspension is mainly made up of spring and damper, once the spring of traditional suspension and damperparameters just cannot be changed after determining, belongs to passive suspension, and passive suspension is difficult to meet the high requirement to suspension property under various states.In the case, magneto-rheological vibration damper particularly suitable.
MR damper is a kind of novel intelligent control device, can be used for half ACTIVE CONTROL of vibration.Due to MR damper have damping force continuously adjustable, dynamic change wide ranges, exert oneself large, respond rapid and simple in structure etc. a little, make MR damper become half the most promising in recent years ACTIVE CONTROL device, and obtained application in fields such as automobile, bridge, building and war products.Along with engineering circles is more and more higher to the requirement of vibration control, MR damper will be widely used in the middle of various Engineering Vibration control.Therefore, exploitation MR damper and developing MR damper market and necessity thereof.At the early 21st century, abroad MR vibration damper is applied on the suspension of high-grade car, its reaction time only has several milliseconds, has almost realized real-time dynamic adjustments, can provide almost variation continuously, the wider damping of scope to regulate.But up to the present domestic MR damper is not applied on a large scale in structural engineering, its reason is that structure and the performance of Current Domestic MR damper also fails to meet the requirement of two aspects below: one, and MR damper is had relatively high expectations to anufacturability; Its two, damper product should have good reliability and sealing.
Existing MR damper complicated in mechanical structure, anufacturability is poor, sealability is not good enough.
Model utility content
Technical problem to be solved in the utility model is, provide a kind of simple in structure, anufacturability and favorable sealing property damping force straight-adjustable cartridge type MR damper.
The technical solution of the utility model is as follows: described damping force straight-adjustable cartridge type MR damper, comprises cylinder barrel, main piston, piston rod, coil, wire, lower end cap, upper end cap and air bag; The two ends of described cylinder barrel connect respectively upper end cap and lower end cap, and described main piston is connected with piston rod, and main piston is arranged in cylinder barrel, and piston rod stretches out outside cylinder barrel through upper end cap, and described coil winding is connected on main piston and with wire; Described air bag is positioned at cylinder barrel one end near lower end cap; Between cylinder barrel, main piston and air bag, form magnetic current body cavity, between lower end cap and air bag, form heavy pressure gas chamber; Between described magnetic current body cavity and heavy pressure gas chamber, by gasbag isolation, in heavy pressure gas chamber, be sealed with pressurized gas, in magnetic current body cavity, be sealed with magnetic flow liquid.
Between upper end cap and cylinder barrel, the second seal ring is installed between lower end cap and cylinder barrel.
The inner side of described upper end cap is provided with U-shaped seal ring, and U-shaped seal ring adopts stop configurations that location is installed; Upper end cap is provided with the liquid filling hole of perforation.
Described lower end cap is provided with air-filled pore, for to heavy pressure gas chamber filling pressurized gas; Air-filled pore place coupling is useful on the pin of sealing air-filled pore.
Described main piston is provided with annular groove, and described coil winding, in the annular groove of main piston, has wire guide on the medial axis of main piston and piston rod, the end that described wire stretches out piston rod through wire guide.
Described damping force straight-adjustable cartridge type MR damper also comprises guide pad and the guide ring for piston rod and main piston are led, and main piston side lower end is provided with the uniform hole of 3 × 120 ° of distributions, and described guide pad is arranged on the uniform hole place of main piston; Upper end cap is provided with the through hole passing for piston rod, and described guide ring is arranged in through hole near upper end cap outside.
Described damping force straight-adjustable cartridge type MR damper also comprises and connects first and connecting head two, and described connection is first to be connected with one end and the lower end cap of piston rod respectively with connecting head two.
Described damping force straight-adjustable cartridge type MR damper also comprises and is arranged on respectively main piston upper end and two buffer stoppers that are connected first inner side, cause both to bump against and damage damper for preventing that the relative displacement of piston rod and cylinder barrel is excessive, described buffer stopper is coaxial with piston rod.
Described damping force straight-adjustable cartridge type MR damper also comprises the first seal ring; Main piston upper-end surface is provided with seal ring standing groove, and the first seal ring is positioned at seal ring standing groove and compresses by piston-rod end face.
The utlity model has following characteristics:
1, utilize upper end cap outside guide ring is installed and on main piston side lower end, is made 3 × 120 ° of uniform holes installation guide pads and play the leading role to piston rod and main piston, avoid main piston to be damaged with inner wall of cylinder friction in the course of the work, thereby obtained higher reliability.
2, leave seal ring putting groove at main piston upper end screw thread end face, utilize the terminal surface press seal circle of piston rod.Simple to operate and the easy processing assembling of this mode, can more effectively seal magnetic flow liquid.
3, utilize cylinder barrel, lower end cap and air bag composition heavy pressure gas chamber, filling pressurized gas therein, utilize pressurized gas that restoring force is provided.Lower end cap leaves air-filled pore, for to heavy pressure gas chamber filling pressurized gas.Inflate and sealed pore with pin afterwards.
The utility model is for existing MR damper complicated in mechanical structure, anufacturability is poor, sealability is not good enough waits deficiency, propose a kind of simple in structure, the adjustable single rod shearing valve type magneto-rheological damper of damping force of anufacturability and favorable sealing property, the utility model is simple in structure, reliable performance, take up space little, be swift in response, the damping force providing is large and adjustable, can be used for all kinds of automobiles before, in the middle of rear suspension, can change in real time according to the vibration state of travel road conditions and the vehicle body of vehicle the dynamics of suspension, thereby improve riding comfort and the control stability of automobile.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model damping force straight-adjustable cartridge type MR damper.
Fig. 2 is main piston and the piston rod connection diagram in the utility model.
Fig. 3 is the airbag structure schematic diagram in the utility model.
In figure: 1. ball pivot; 2. pin; 3. connecting head two; 4. lower end cap; 5. air bag; 6. magnetic flow liquid; 7. guide pad; 8. coil; 9. the first seal ring; 10. main piston; 11. cylinder barrels; 12. buffer stoppers; 13. second seal rings; 14. wires; 15. upper end caps; 16. guide rings; 17. U-shaped seal rings; 18. piston rods; 19. connections are first.
Embodiment
Below in conjunction with Fig. 1 to Fig. 3, the utility model is described in further detail.
Automotive suspension adopts single rod structural type by MR damper, for the Volume Changes that compensating piston bar turnover cylinder barrel causes, in the damper of single rod structure, heavy pressure gas chamber is set.Whole damping force straight-adjustable cartridge type MR damper is made up of magnetic current body cavity, heavy pressure gas chamber and other component.
Described damping force straight-adjustable cartridge type MR damper comprises cylinder barrel 11, main piston 10, piston rod 18, coil 8, wire 14, free-piston (not marking in figure), upper end cap 15, lower end cap 4, air bag 5, connect first 19 and connecting head 23, buffer stopper 12, guide pad 7, guide ring 16, the first seal ring 9, the second seal ring 13 and U-shaped seal ring 17.Between cylinder barrel, main piston and air bag, form magnetic current body cavity, between lower end cap and air bag, form heavy pressure gas chamber, between magnetic current body cavity and heavy pressure gas chamber, adopt air bag to isolate.In heavy pressure gas chamber, be sealed with pressurized gas, in magnetic current body cavity, be sealed with magnetic flow liquid 6.
The two ends of described cylinder barrel connect respectively upper end cap and lower end cap.The sealing of upper end cap and lower end cap and cylinder barrel all adopts static sealing ring (the second seal ring).
U-shaped seal ring is installed in the inner side of described upper end cap, and U-shaped seal ring adopts stop configurations that location is installed.In the through hole passing for piston rod at upper end cap, near end cap outside, a metal guide ring is installed, is played the effect to piston rod guiding.Upper end cap is provided with the liquid filling hole of perforation.
Described lower end cap leaves air-filled pore (for the thin straight hole of inflation), for to air bag filling pressurized gas.Described main piston is connected with piston rod, on the medial axis of main piston and piston rod, drives wire guide.Described guide pad is arranged on main piston by punching, jointly play the guiding role with guide ring.
Seals high pressure gas in described heavy pressure gas chamber is isolated the pressurized gas in the magnetic flow liquid in magnetic current body cavity 6 and heavy pressure gas chamber by air bag simultaneously.
Described coil winding, in the annular groove of main piston, and is connected with wire.Described wire, through the central axis hole of main piston and piston rod, is finally drawn by the end of piston rod.
Described connection is first to be connected with one end and the lower end cap of piston rod respectively with connecting head two.
Main piston upper end be connected first inner side buffer stopper be installed, cause both to bump against and damage damper for preventing that the relative displacement of piston rod and cylinder barrel is excessive, buffer stopper is coaxial with piston rod, and frictional force between dependence and piston rod is fixed its position.
Embodiment one:
As shown in Figure 1, the damping force straight-adjustable cartridge type MR damper of the present embodiment adopts the shearing valve type structural type of single rod.Whole damper is made up of magnetic current body cavity, heavy pressure gas chamber and some other component.Comprise cylinder barrel 11, main piston 10, piston rod 18, coil 8, air bag 5 and upper end cap 15, air bag 5, pin 2 and lower end cap 4; That other parts connect is in addition first 19, connecting head 23, buffer stopper 12, guide pad 7 and various Sealing.Between magnetic current body cavity and heavy pressure gas chamber, adopt air bag 5 to isolate.The two ends of described cylinder barrel 11 connect upper end cap 15 and lower end cap 4.Described upper end cap 15 adopts static sealing ring with the sealing of cylinder barrel, and lower end cap 4 adopts air bag 5 crush seals with the sealing of cylinder barrel.U-shaped seal ring 17 is installed in the inner side of upper end cap 15, and U-shaped seal ring 17 adopts stop configurations that location is installed.Outside in the through hole of upper end cap 15 is installed guide ring 16 and is jointly played the effect to piston rod guiding with the guide pad of main piston 10 lower ends installations.Upper end cap 15 has the liquid filling hole that connects the inside and outside both sides of end cap above.Described lower end cap 4 leaves air-filled pore, for to heavy pressure gas chamber filling pressurized gas.The both sides of described air bag 5 seal respectively magnetic flow liquid 6 and pressurized gas, and air bag 5 is by magnetic flow liquid 6 and heavy pressure gas chamber isolation.Described main piston 10 is connected with piston rod 18, on the medial axis of main piston 10 and piston rod 18, drives wire guide.Described coil 8 is wrapped in the annular groove of main piston 10, and is connected with wire 14.Connecting first 19 is connected with piston rod 18 and lower end cap 4 respectively with connecting head 23.Ball pivot 1 is connected with connecting head 23.Described wire 14, through the wire guide of the medial axis of main piston 10 and piston rod 18, is drawn by the end of piston rod 18.Buffer stopper 12 is installed with the inner side that is connected first 19 in upper end at main piston 10, and buffer stopper 12 is coaxial with piston rod 11, relies on the frictional force of piston rod 18 it is located.
Embodiment two:
As shown in Figure 1, present embodiment utilizes upper end cap 15 outsides guide ring 16 is installed and on main piston 10 side lower ends, is made a call to 3 × 120 ° of uniform holes guide pad 16 is installed, and plays the leading role to piston rod 18 and main piston 10.Avoid main piston 10 to be damaged with the interior wall friction of cylinder barrel 11 in the course of the work, reliability is higher, and other composition and Placement are identical with embodiment one.
Embodiment three:
As shown in Figure 2, present embodiment leaves the first seal ring 9 putting grooves at main piston 10 upper end screw thread end faces, utilizes the terminal surface of piston rod 18 to compress the first seal ring 9, and this mode is simple and easy to processing assembling, can more effectively seal magnetic flow liquid 6.Other composition and Placement are identical with embodiment one.
Embodiment four:
As shown in Figure 3, present embodiment utilizes cylinder barrel 11, lower end cap 4 and air bag 5 to form heavy pressure gas chamber, and filling pressurized gas therein, utilize pressurized gas that restoring force is provided.Lower end cap 4 leaves air-filled pore, for to heavy pressure gas chamber filling pressurized gas.Inflate and sealed air-filled pore with pin 2 afterwards.Other composition and Placement are identical with embodiment one.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within being all included in protection domain of the present utility model.
Claims (9)
1. a damping force straight-adjustable cartridge type MR damper, comprises cylinder barrel, main piston, piston rod, coil, wire, lower end cap and upper end cap; The two ends of described cylinder barrel connect respectively upper end cap and lower end cap, described main piston is connected with piston rod, main piston is arranged in cylinder barrel, piston rod stretches out outside cylinder barrel through upper end cap, described coil winding is connected on main piston and with wire, it is characterized in that, also comprise air bag, described air bag is positioned at cylinder barrel one end near lower end cap; Between cylinder barrel, main piston and air bag, form magnetic current body cavity, between lower end cap and air bag, form heavy pressure gas chamber; Between described magnetic current body cavity and heavy pressure gas chamber, by gasbag isolation, in heavy pressure gas chamber, be sealed with pressurized gas, in magnetic current body cavity, be sealed with magnetic flow liquid.
2. damping force straight-adjustable cartridge type MR damper according to claim 1, is characterized in that, between upper end cap and cylinder barrel, the second seal ring is installed between lower end cap and cylinder barrel.
3. damping force straight-adjustable cartridge type MR damper according to claim 1, is characterized in that, the inner side of described upper end cap is provided with U-shaped seal ring, and U-shaped seal ring adopts stop configurations that location is installed; Upper end cap is provided with the liquid filling hole of perforation.
4. damping force straight-adjustable cartridge type MR damper according to claim 1, is characterized in that, described lower end cap is provided with air-filled pore, for to heavy pressure gas chamber filling pressurized gas; Air-filled pore place coupling is useful on the pin of sealing air-filled pore.
5. damping force straight-adjustable cartridge type MR damper according to claim 1, it is characterized in that, described main piston is provided with annular groove, described coil winding is in the annular groove of main piston, on the medial axis of main piston and piston rod, have wire guide, the end that described wire stretches out piston rod through wire guide.
6. damping force straight-adjustable cartridge type MR damper according to claim 1, it is characterized in that, also comprise guide pad and guide ring for piston rod and main piston are led, main piston side lower end is provided with the uniform hole of 3 × 120 ° of distributions, and described guide pad is arranged on the uniform hole place of main piston; Upper end cap is provided with the through hole passing for piston rod, and described guide ring is arranged in through hole near upper end cap outside.
7. damping force straight-adjustable cartridge type MR damper according to claim 1, is characterized in that, also comprises and connects first and connecting head two, and described connection is first to be connected with one end and the lower end cap of piston rod respectively with connecting head two.
8. damping force straight-adjustable cartridge type MR damper according to claim 1, it is characterized in that, also comprise and be arranged on respectively main piston upper end and two buffer stoppers that are connected first inner side, cause both to bump against and damage damper for preventing that the relative displacement of piston rod and cylinder barrel is excessive, described buffer stopper is coaxial with piston rod.
9. damping force straight-adjustable cartridge type MR damper according to claim 1, is characterized in that, also comprises the first seal ring; Main piston upper-end surface is provided with seal ring standing groove, and the first seal ring is positioned at seal ring standing groove and compresses by piston-rod end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420020367.5U CN203641377U (en) | 2014-01-14 | 2014-01-14 | Straight magneto-rheological damper with adjustable damping force |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420020367.5U CN203641377U (en) | 2014-01-14 | 2014-01-14 | Straight magneto-rheological damper with adjustable damping force |
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| CN203641377U true CN203641377U (en) | 2014-06-11 |
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| CN201420020367.5U Expired - Lifetime CN203641377U (en) | 2014-01-14 | 2014-01-14 | Straight magneto-rheological damper with adjustable damping force |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568737A (en) * | 2015-01-08 | 2015-04-29 | 重庆材料研究院有限公司 | Magnetic control fluid mechanics performance testing device based on flow pattern |
| CN105626737A (en) * | 2016-03-02 | 2016-06-01 | 杨社喜 | Electric-control damping shock absorber |
| CN106979271A (en) * | 2017-05-04 | 2017-07-25 | 湘潭大学 | A kind of novel piston inner flow passage magneto-rheological vibration damper |
| CN107314077A (en) * | 2017-07-13 | 2017-11-03 | 盐城市步高汽配制造有限公司 | A kind of double-cylinder type magneto-rheological vibration damper of inside and outside twin coil |
| CN108533325A (en) * | 2018-03-14 | 2018-09-14 | 胡万锡 | Single cylinder pneumatic motor with high stability piston component |
| CN108533324A (en) * | 2018-03-14 | 2018-09-14 | 胡万锡 | A kind of single cylinder pneumatic motor |
| CN108930752A (en) * | 2018-07-23 | 2018-12-04 | 株洲时代新材料科技股份有限公司 | A kind of MR damper |
| CN110924288A (en) * | 2019-11-13 | 2020-03-27 | 株洲时代新材料科技股份有限公司 | Viscous damper |
| CN112360915A (en) * | 2020-08-20 | 2021-02-12 | 武汉理工大学 | Novel magnetorheological fluid shock absorber |
| CN115045949A (en) * | 2022-06-13 | 2022-09-13 | 上海正念汽车科技有限公司 | Oil leakage prevention multipurpose shock absorber |
-
2014
- 2014-01-14 CN CN201420020367.5U patent/CN203641377U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104568737A (en) * | 2015-01-08 | 2015-04-29 | 重庆材料研究院有限公司 | Magnetic control fluid mechanics performance testing device based on flow pattern |
| CN104568737B (en) * | 2015-01-08 | 2017-11-10 | 重庆材料研究院有限公司 | Magnetic control hydrodynamic performance test device based on flow pattern |
| CN105626737A (en) * | 2016-03-02 | 2016-06-01 | 杨社喜 | Electric-control damping shock absorber |
| CN106979271A (en) * | 2017-05-04 | 2017-07-25 | 湘潭大学 | A kind of novel piston inner flow passage magneto-rheological vibration damper |
| CN107314077A (en) * | 2017-07-13 | 2017-11-03 | 盐城市步高汽配制造有限公司 | A kind of double-cylinder type magneto-rheological vibration damper of inside and outside twin coil |
| CN108533325A (en) * | 2018-03-14 | 2018-09-14 | 胡万锡 | Single cylinder pneumatic motor with high stability piston component |
| CN108533324A (en) * | 2018-03-14 | 2018-09-14 | 胡万锡 | A kind of single cylinder pneumatic motor |
| CN108930752A (en) * | 2018-07-23 | 2018-12-04 | 株洲时代新材料科技股份有限公司 | A kind of MR damper |
| CN110924288A (en) * | 2019-11-13 | 2020-03-27 | 株洲时代新材料科技股份有限公司 | Viscous damper |
| CN112360915A (en) * | 2020-08-20 | 2021-02-12 | 武汉理工大学 | Novel magnetorheological fluid shock absorber |
| CN112360915B (en) * | 2020-08-20 | 2022-02-15 | 武汉理工大学 | Novel magnetorheological fluid shock absorber |
| CN115045949A (en) * | 2022-06-13 | 2022-09-13 | 上海正念汽车科技有限公司 | Oil leakage prevention multipurpose shock absorber |
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| GR01 | Patent grant | ||
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Granted publication date: 20140611 |
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| CX01 | Expiry of patent term |