CN102287477A - Magnet-rheological shock absorber for automobile suspension system - Google Patents
Magnet-rheological shock absorber for automobile suspension system Download PDFInfo
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- CN102287477A CN102287477A CN2011102328515A CN201110232851A CN102287477A CN 102287477 A CN102287477 A CN 102287477A CN 2011102328515 A CN2011102328515 A CN 2011102328515A CN 201110232851 A CN201110232851 A CN 201110232851A CN 102287477 A CN102287477 A CN 102287477A
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Abstract
The invention discloses a magnet-rheological shock absorber for an automobile suspension system. The magnet-rheological shock absorber comprises a cylinder body, a piston rod, an electromagnetic piston and a floating piston. The shock absorber can realize vibration attenuation by a damping force generated by magnet-rheological liquid flowing through a magnet-rheological liquid channel arranged on the electromagnetic piston so that the vibration absorption effect can be reached. When in use, the shock absorber can be compensated through the volume change in an air chamber between a base and the floating piston so as to improve the working stability of the shock absorber. The shock absorber has greater loading capacity and can satisfy the operating requirement of heavy vehicles. Besides, through the improvements of the floating piston, the electromagnetic piston, the piston rod sealing structure and the lead structure and the like, the shock absorber can also be improved in working stability, loading capacity and assembling convenience and can be enhanced in the beneficial effects such as the shock absorber stroke and the like.
Description
Technical field
The present invention relates to vibration damping equipment, particularly a kind of automobile suspension system vibration damper.
Background technique
Magnetic flow liquid is the material that its yield stress and viscosity can change with externally-applied magnetic field, and this variation has quick, reversible and controlled characteristics, and based on these characteristics, magnetic flow liquid can be used for the device of externally-applied magnetic field control, as break, vibration damper etc.The principle of magneto-rheological vibration damper is to make vibration attenuation by the mobile damping force that is produced of magnetic flow liquid, and this damping force can be controlled by externally-applied magnetic field.
Existing automobile suspension system magneto-rheological vibration damper generally is made of cylinder body, piston rod, electromagnetic piston, floating piston and Sealing, following some deficiency of existing automobile suspension system magneto-rheological vibration damper existence: 1) because the interior amount of gas of the air chamber that floating piston is divided into is certain, cause vibration damper pressure change in the air chamber when work bigger, make the vibration damper working stability relatively poor; 2) floating piston has only Seal Design and does not have the guiding design, causes it clamping stagnation may occur, job insecurity when sliding; 3) adopt traditional sealing configuration, need take axially long space, the stroke of damper piston is shortened; 4) pin configuration is unreasonable, causes lead-in wire operation easier height, influences the manufacturing efficiency of vibration damper, and leakage easily; 5) existing vibration damper bearing capacity is limited, the usage requirement of discontented lumping weight type vehicle.
Therefore, need to explore a kind of automobile suspension system magneto-rheological vibration damper, make it overcome above-mentioned shortcoming, make the work of vibration damper more stable, simultaneously, also make its bearing capacity stronger, avoid leakage and be convenient to operation such as lead-in wire to enhance productivity.
Summary of the invention
In view of this, the invention provides a kind of automobile suspension system magneto-rheological vibration damper, this vibration damper is by the air chamber Compensation Design, reach the purpose of the working stability that improves vibration damper, in addition, by to improvement such as electromagnetic piston, floating piston, pin configurations, improve the bearing capacity of vibration damper, the stability and the manufacturing efficiency of work.
Automobile suspension system magneto-rheological vibration damper of the present invention, comprise cylinder body, piston rod, be set up in parallel electromagnetic piston and floating piston in cylinder body, described piston rod stretches in the cylinder body and with electromagnetic piston near an end of electromagnetic piston from cylinder body fixedlys connected, be provided with black box between one end of the close electromagnetic piston of cylinder body and the piston rod, between described floating piston and the electromagnetic piston, form two chambers that are full of magnetic flow liquid between electromagnetic piston and the black box respectively, electromagnetic piston is provided with the magnetic flow liquid passage that is communicated with two chambers, the outer end of piston rod is provided with and is used for the suspension ring that vibration damper is installed, the end sealing relative with the piston rod outer end is provided with and is used for the base that vibration damper is installed on the described cylinder body, form the compensation air chamber between described base and the floating piston, base is provided with and compensates the Air filling and discharging valves that air chamber is communicated with, and the indoor air pressure of complemental air is 1.4～1.6Mpa.
Further, described electromagnetic piston comprises the guide sleeve that is slidingly matched vertically with cylinder body and is wound with the piston body of electromagnetic coil that described piston body is placed in and forms built-up piston in the guide sleeve;
Further, described electromagnetic piston comprises the guide holder that is slidingly matched vertically with cylinder body and is wound with the piston body of electromagnetic coil that described piston body and guide holder are set up in parallel and form the separated type piston;
Further, described black box comprises along Boring mill to the guiding device that outwards sets gradually, the rod seal circle, the piston rod dust ring, maintainance set and friction top, described guiding device comprise along Boring mill to withstand be arranged at supporting frame that inboard wall of cylinder block tops bar and in be placed in the supporting frame and be coated at guiding copper sheathing on the piston rod, described maintainance set is made of holding chamber and the shirt rim that is arranged at around the holding chamber, rod seal circle and piston rod dust ring are positioned at holding chamber, described friction top fixedly is placed in the cylinder body removably, and the shirt rim of maintainance set is pressed between supporting frame and the friction top;
Further, be set side by side with floating piston seal ring and floating piston guide collar on the cylindrical of described floating piston;
Further, the end near base is provided with groove on the described floating piston;
Further, be provided with fairlead in the described piston rod vertically, the lead channels that is communicated with fairlead is set on the described piston body, the side that described suspension ring inner ring is connected with piston rod is provided with out wire casing;
Further, described fairlead runs through piston rod, and described fairlead is positioned at the aperture of cylinder body and adopts the screw sealing;
Further, described lead channels is for being arranged at the two ends that are positioned at coil on the piston body and the coil wire-feeding hold that is communicated with fairlead and coil wire outlet hole respectively;
Further, described lead channels is to be arranged at an end of piston body and the lead-in wire groove that is communicated with fairlead.
Beneficial effect of the present invention: automobile suspension system magneto-rheological vibration damper of the present invention has the following advantages:
1) adopt the air chamber collocation structure, the motion of floating piston makes compensation air chamber volume size variation to compensate during vibration damper work, improves the working stability of vibration damper;
2) the combined electromagnetic piston structure makes piston take length space weak point, increases the stroke of vibration damper;
3) separated type electromagnetic piston bearing capacity is stronger;
4) floating piston adopts sealing to add guide structure, and is more stable when making its work, reliable;
5) sealing configuration of piston rod takies length space weak point with respect to the conventional seals structure, helps increasing the stroke of vibration damper, and adopts the friction top compressing structure, is easy to assembling;
6) particular design of pin configuration makes the lead-in wire more convenient operation, and can effectively avoid the fairlead leakage.
Description of drawings
Below in conjunction with drawings and Examples the present invention is further described.
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a separated type structure of piston schematic representation of the present invention;
Fig. 3 is the A place partial enlarged drawing of Fig. 1.
Embodiment
The present invention is described in detail below with reference to accompanying drawing, as shown in the figure: the automobile suspension system magneto-rheological vibration damper of present embodiment, comprise cylinder body 1, piston rod 2, be set up in parallel electromagnetic piston and floating piston 3 in cylinder body 1, described piston rod 2 stretches in the cylinder body 1 and with electromagnetic piston near an end of electromagnetic piston from cylinder body 1 fixedlys connected, the diameter of the leading portion of piston rod 3 is less than the diameter of back segment, step of formation and leading portion are provided with screw thread between the leading portion back segment, the step that the leading portion of piston rod 3 passes behind the electromagnetic piston on it withstands electromagnetic piston, screwing in nut again compresses and realizes that both are fixedly connected, be provided with black box between one end of cylinder body 1 close electromagnetic piston and the piston rod 2, between described floating piston 3 and the electromagnetic piston, form two chambers that are full of magnetic flow liquid between electromagnetic piston and the black box respectively, electromagnetic piston is provided with the magnetic flow liquid passage 4 that is communicated with two chambers, the outer end of piston rod 2 is provided with and is used for the suspension ring 5 that vibration damper is installed, the end sealing relative with piston rod 2 outer ends is provided with and is used for the base 6 that vibration damper is installed on the described cylinder body 1, by suspension ring and base vibration damper is installed on the automotive suspension, when automobilism produces vibration, piston rod promotes descent of piston or up, magnetic flow liquid flows through magnetic flow liquid passage 4 and produces damping force, make vibration attenuation, change the magnetic intensity that is produced of electromagnetic piston by impressed current, can change the character such as viscosity of magnetic flow liquid, make the vibration damper can " hardening " or " deliquescing ", so that automobile adapts with various different road conditions, form compensation air chamber 7 between described base 6 and the floating piston 3, base 6 is provided with and compensates the Air filling and discharging valves 8 that air chamber 7 is communicated with, by charging into a certain amount of gas in 8 pairs of compensation air chambers 7 of Air filling and discharging valves, make its air pressure reach 1.4～1.6Mpa, this air pressure can make the compensating action of compensation air chamber reach best, improves the stability of vibration damper work.
As further improvement in the technical proposal, electromagnetic piston can be selected two kinds of structural types for use: a) described electromagnetic piston comprises guide sleeve 9 that is slidingly matched vertically with cylinder body 1 and the piston body 10 that is wound with electromagnetic coil, and described piston body 10 is placed in and forms built-up piston in the guide sleeve 9; B) described electromagnetic piston comprises guide holder 11 that is slidingly matched vertically with cylinder body 1 and the piston body 10 that is wound with electromagnetic coil, and described piston body 10 is set up in parallel with guide holder 11 and forms the separated type piston.Both compare, and it is little that built-up piston takies the axial length space, help increasing the stroke of vibration damper, but bearing capacity is slightly poor, and separated type piston bearing capacity is stronger, but it is also more to take the length space.
As further improvement in the technical proposal, described black box comprises the guiding device that axially outwards sets gradually along cylinder body 1, rod seal circle 13, piston rod dust ring 14, maintainance set 15 and friction top 16, described guiding device comprise along cylinder body 1 axially withstand be arranged at supporting frame 12a that cylinder body 1 inwall tops bar and in be placed in the supporting frame 12a and be coated at guiding copper sheathing 12b on the piston rod 2, described maintainance set 15 is made of holding chamber 15a and the shirt rim 15b that is arranged at around the holding chamber 15a, rod seal circle 13 and piston rod dust ring 14 are positioned at holding chamber 15a, described friction top 16 fixedly is placed in the cylinder body 1 removably, the shirt rim 15b of maintainance set 15 is pressed between supporting frame 12a and the friction top 16, compress seal ring and dust ring by maintainance set, make the shared space of seal ring and dust ring be positioned at the hollow space of friction top 16, compare with traditional direct compressing structure, the shared length space of sealing assembly reduces greatly, has effectively increased the stroke of vibration damper.
As further improvement in the technical proposal, be set side by side with floating piston seal ring 3a and floating piston guide collar 3b on the cylindrical of described floating piston 3, more reliable and more stable when floating piston is floated.
As further improvement in the technical proposal, end near base 6 on the described floating piston 3 is provided with groove 3c, can increase the air chamber volume, reduce pressure change, strengthen compensation effect, simultaneously, groove also can alleviate the weight of floating piston, reduce motional inertia,, can also adopt aluminium manufacturing for further alleviating the weight of floating piston.
As further improvement in the technical proposal, be provided with fairlead 17 vertically in the described piston rod 2, the lead channels that is communicated with fairlead 17 is set on the described piston body 10, be positioned at a side that is connected with piston rod 2 on described suspension ring 5 inner rings and be provided with out wire casing 5a, after the end of a thread passes piston rod, can draw the end of a thread, with respect to original perforate and from the hole, pull out the structure of the end of a thread on suspension ring along lead-in wire groove bending, easy operating, lead-in wire efficient improves greatly.
As further improvement in the technical proposal, described fairlead 17 runs through piston rod 2, and it is more convenient to go between, and described fairlead 17 is positioned at the aperture of cylinder body 1 and adopts screw 18 sealings, and the pressure when the reduction piston rod presses down in the fairlead prevents leakage.
As further improvement in the technical proposal, coil can adopt two kinds of pin configurations: a) described lead channels is for being arranged at two ends that are positioned at coil on the piston body 10 and the coil wire-feeding hold 10a that is communicated with fairlead 17 and coil wire outlet hole 10b respectively, coil easily twines, and kinking is more even, but piston body and piston rod all need be processed two fairleads, are difficult for assembling; B) described lead channels is to be arranged at an end of piston body 10 and the lead-in wire groove 10c that is communicated with fairlead 17, and lead-in wire is easy, but twines even inadequately.
Explanation is at last, above embodiment is only unrestricted in order to technological scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technological scheme of the present invention, and not breaking away from the aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (10)
1. automobile suspension system magneto-rheological vibration damper, comprise cylinder body (1), piston rod (2), be set up in parallel electromagnetic piston and floating piston (3) in cylinder body (1), described piston rod (2) stretches near an end of electromagnetic piston in the cylinder body (1) and with electromagnetic piston from cylinder body (1) fixedlys connected, be provided with black box between one end of the close electromagnetic piston of cylinder body (1) and the piston rod (2), between described floating piston (3) and the electromagnetic piston, form two chambers that are full of magnetic flow liquid between electromagnetic piston and the black box respectively, electromagnetic piston is provided with the magnetic flow liquid passage (4) that is communicated with two chambers, the outer end of piston rod (2) is provided with and is used for the suspension ring (5) that vibration damper is installed, described cylinder body (1) is gone up the end sealing relative with piston rod (2) outer end and is provided with the base (6) that is used for the vibration damper installation, it is characterized in that: form compensation air chamber (7) between described base (6) and the floating piston (3), base (6) is provided with and compensates the Air filling and discharging valves (8) that air chamber (7) is communicated with, and the indoor air pressure of complemental air is 1.4～1.6Mpa.
2. automobile suspension system magneto-rheological vibration damper according to claim 1, it is characterized in that: described electromagnetic piston comprises guide sleeve (9) that is slidingly matched vertically with cylinder body (1) and the piston body (10) that is wound with electromagnetic coil, and described piston body (10) is placed in and forms built-up piston in the guide sleeve (9).
3. automobile suspension system magneto-rheological vibration damper according to claim 1, it is characterized in that: described electromagnetic piston comprises guide holder (11) that is slidingly matched vertically with cylinder body (1) and the piston body (10) that is wound with electromagnetic coil, and described piston body (10) is set up in parallel with guide holder (11) and forms the separated type piston.
4. according to claim 1,2 or 3 described automobile suspension system magneto-rheological vibration dampers, it is characterized in that: described black box comprises the guiding device that axially outwards sets gradually along cylinder body (1), rod seal circle (13), piston rod dust ring (14), maintainance set (15) and friction top (16), described guiding device comprise along cylinder body (1) axially withstand be arranged at supporting frame (12a) that cylinder body (1) inwall tops bar and in be placed in the supporting frame (12a) and be coated at guiding copper sheathing (12b) on the piston rod (2), described maintainance set (15) is by holding chamber (15a) and be arranged at holding chamber (15a) shirt rim (15b) formation on every side, rod seal circle (13) and piston rod dust ring (14) are positioned at holding chamber (15a), described friction top (16) fixedly is placed in the cylinder body (1) removably, and the shirt rim (15b) of maintainance set (15) is pressed between supporting frame (12a) and the friction top (16).
5. automobile suspension system magneto-rheological vibration damper according to claim 4 is characterized in that: be set side by side with floating piston seal ring (3a) and floating piston guide collar (3b) on the cylindrical of described floating piston (3).
6. automobile suspension system magneto-rheological vibration damper according to claim 5 is characterized in that: the end that described floating piston (3) is gone up near base (6) is provided with groove (3c).
7. automobile suspension system magneto-rheological vibration damper according to claim 6, it is characterized in that: be provided with fairlead (17) in the described piston rod (2) vertically, described piston body (10) is gone up the lead channels that is communicated with fairlead (17) is set, and is positioned at a side that is connected with piston rod (2) on described suspension ring (5) inner ring and is provided with out wire casing (5a).
8. automobile suspension system magneto-rheological vibration damper according to claim 7 is characterized in that: described fairlead (17) runs through piston rod (2), and described fairlead (17) is positioned at the aperture of cylinder body (1) and adopts screw (18) sealing.
9. automobile suspension system magneto-rheological vibration damper according to claim 8 is characterized in that: described lead channels is for being arranged at two ends and coil wire-feeding hold (10a) that is communicated with fairlead (17) and the coil wire outlet hole (10b) that is positioned at coil on the piston body (10) respectively.
10. automobile suspension system magneto-rheological vibration damper according to claim 8 is characterized in that: described lead channels is for being arranged at an end of piston body (10) and the lead-in wire groove (10c) that is communicated with fairlead (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110232851 CN102287477B (en) | 2011-08-15 | 2011-08-15 | Magnet-rheological shock absorber for automobile suspension system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110232851 CN102287477B (en) | 2011-08-15 | 2011-08-15 | Magnet-rheological shock absorber for automobile suspension system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102287477A true CN102287477A (en) | 2011-12-21 |
| CN102287477B CN102287477B (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110232851 Expired - Fee Related CN102287477B (en) | 2011-08-15 | 2011-08-15 | Magnet-rheological shock absorber for automobile suspension system |
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| CN (1) | CN102287477B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606670A (en) * | 2012-03-23 | 2012-07-25 | 华东交通大学 | Differential sensing type magnetorheological damper |
| CN103016598A (en) * | 2012-12-28 | 2013-04-03 | 宁波凯瑞汽车零部件有限公司 | Shock absorber |
| CN103121456A (en) * | 2013-03-06 | 2013-05-29 | 唐山轨道客车有限责任公司 | Steering frame for railway vehicle and railway vehicle |
| CN103470674A (en) * | 2013-09-30 | 2013-12-25 | 湘潭大学 | Inner-channel vehicle suspension system magnetorheological damper |
| CN103758913A (en) * | 2014-02-16 | 2014-04-30 | 苏州信文食品有限公司 | Mixed mode magneto-rheological shock absorber |
| CN106641071A (en) * | 2016-12-20 | 2017-05-10 | 上海工程技术大学 | Magnetorheological fluid inflatable vibration reducer |
| CN112164932A (en) * | 2020-09-21 | 2021-01-01 | 广州跃汇贸易有限公司 | Plug and socket for household dish washer for preventing mistaken pulling |
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| CN2816484Y (en) * | 2005-08-18 | 2006-09-13 | 哈尔滨工程大学 | Impaction-resisting shock-absorption device based on magnetic current variation technology |
| CN101832354A (en) * | 2010-01-19 | 2010-09-15 | 谭和平 | Single-output rod double-cylinder magneto-rheological damper |
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| US5353897A (en) * | 1991-09-21 | 1994-10-11 | Fichtel & Sachs Ag | Vibration damper |
| CN2115425U (en) * | 1992-03-20 | 1992-09-09 | 北京理工大学 | Magnetic fluid adjustable gas damping vibration damper |
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| CN101832354A (en) * | 2010-01-19 | 2010-09-15 | 谭和平 | Single-output rod double-cylinder magneto-rheological damper |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606670A (en) * | 2012-03-23 | 2012-07-25 | 华东交通大学 | Differential sensing type magnetorheological damper |
| CN102606670B (en) * | 2012-03-23 | 2014-04-02 | 华东交通大学 | Differential sensing type magnetorheological damper |
| CN103016598A (en) * | 2012-12-28 | 2013-04-03 | 宁波凯瑞汽车零部件有限公司 | Shock absorber |
| CN103121456A (en) * | 2013-03-06 | 2013-05-29 | 唐山轨道客车有限责任公司 | Steering frame for railway vehicle and railway vehicle |
| CN103470674A (en) * | 2013-09-30 | 2013-12-25 | 湘潭大学 | Inner-channel vehicle suspension system magnetorheological damper |
| CN103470674B (en) * | 2013-09-30 | 2015-10-21 | 湘潭大学 | A kind of Inner-channel vehicle suspension system magnetorheological damper |
| CN103758913A (en) * | 2014-02-16 | 2014-04-30 | 苏州信文食品有限公司 | Mixed mode magneto-rheological shock absorber |
| CN106641071A (en) * | 2016-12-20 | 2017-05-10 | 上海工程技术大学 | Magnetorheological fluid inflatable vibration reducer |
| CN112164932A (en) * | 2020-09-21 | 2021-01-01 | 广州跃汇贸易有限公司 | Plug and socket for household dish washer for preventing mistaken pulling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102287477B (en) | 2013-03-20 |
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Granted publication date: 20130320 Termination date: 20130815 |