CN103423365B - Membrane type magneto-rheological damper and system - Google Patents
Membrane type magneto-rheological damper and system Download PDFInfo
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- CN103423365B CN103423365B CN201310348865.2A CN201310348865A CN103423365B CN 103423365 B CN103423365 B CN 103423365B CN 201310348865 A CN201310348865 A CN 201310348865A CN 103423365 B CN103423365 B CN 103423365B
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Abstract
The invention discloses a kind of membrane type magneto-rheological damper and system, comprise cylinder body and damper assembly, damper assembly comprises be connected to the damped diaphragm between damping plate and cylinder body along Boring mill to the damping plate be set up in parallel with at damping plate environmental seal in cylinder body, damping plate, between damped diaphragm and cylinder body, jointly surround damping cavity, in damping cavity, fill magnetorheological medium; Described damped diaphragm is for flexibility is or/and elastic material is made; Damper assembly is provided with along Boring mill to the damper rod stretching out cylinder body; Damper also comprises electromagnet for controlling magnetorheological medium and control circuit thereof; Total quality of the present invention is lighter, inertia is less, pulling back of diaphragm is utilized to act on and scratch change in conjunction with magnetorheological medium in damped diaphragm and damping plate junction, and the coefficient of scratching change is adjustable, damper assembly of the present invention is had for high frequency small amplitude motion react flexibly, be applicable to, to the higher detection of required precision, production run occasion, ensure testing precision and traveling comfort.
Description
Technical field
The present invention relates to a kind of magnetorheological damping equipment, particularly a kind of can ensure surveying instrument not the MR damper machine system that disturbs by extraneous high frequency small amplitude motion.
Background technique
MR damper is a kind of intelligent vibration damping device, existing bar-type magneto-rheological damper many employings piston and housing structure, piston mostly wherein is the cylindrical be made up of magnetic conductive metal, and adjust its damping force exported by changing the viscosity of magnetorheological medium between piston and cylinder body, the MR damper of this kind of employing cylindrical piston structure, because the quality of piston is comparatively large and gap between piston and cylinder body is less, has larger motional inertia and is difficult to the damping vibration attenuation demand of the vibration occasion being applicable to the little amplitude of high frequency; Particularly for high-precision surveying instrument etc. concerning the higher occasion of required precision, need to eliminate the interference that dither causes it, otherwise its testing result and running state can be affected.
Therefore, need a kind of damper vibration of the little amplitude of high frequency being carried out to effective damping that can be pointed, be applicable to, to the higher detection of required precision, production run occasion, ensure testing precision and traveling comfort.
Summary of the invention
In view of this, object of the present invention provides a kind of membrane type magneto-rheological damper and system, can be pointed effective damping is carried out to the vibration of the little amplitude of high frequency, be applicable to, to the higher detection of required precision, production run occasion, ensure testing precision and traveling comfort.
Membrane type magneto-rheological damper of the present invention, comprise cylinder body and the damper assembly being positioned at cylinder body, described damper assembly comprises be connected to the damped diaphragm between damping plate and cylinder body along Boring mill to the damping plate be set up in parallel with at damping plate environmental seal in cylinder body, described damping plate, between damped diaphragm and cylinder body, jointly surround damping cavity, in described damping cavity, fill magnetorheological medium; Described damped diaphragm is that elastic material is made; Described damper assembly is provided with along Boring mill to stretching out cylinder body also at least at the damper rod of axial restraint connection damping plate;
Damper also comprises electromagnet for controlling magnetorheological medium and control circuit thereof.
Further, described cylinder body vertically two ends is fixed with end cap respectively, and described damper rod stretches out end cap vertically and the end cap stretched out with it is slidably matched;
Further, described damper assembly also comprises damping compensation air bag, and described damper rod is one and stretches out one of them end cap of cylinder body; Described damping compensation air bag is pressed between another end cap of cylinder body and the damping plate adjacent with this end cap;
Further, described electromagnet is fixed on around cylinder body, and described cylinder body and end cap, damping plate and damper rod are made by non-permeable material;
Further, described damping plate and damped diaphragm are two, and the axial spacing between two damping plates is less than 1/2nd of damped diaphragm external diameter;
Further, described damped diaphragm is made up of elastic polymer material;
Further, self-lubricating plain bearing is provided with between described damper rod and its end cap stretched out.
The invention also discloses a kind of damped system utilizing the anti-external interference of membrane type magneto-rheological damper assurance device, comprising:
Membrane type magneto-rheological damper, for passing through damper rod gentle support device;
Infrastructure device, for settling membrane type magneto-rheological damper.
Further, also comprise:
Vibration parameters pick-up transducers, for gathering the vibration parameters of infrastructure device;
Central processing unit (CPU), for receiving the vibration parameters of vibration parameters pick-up transducers and sending control command, for regulating the working state of magnetorheological medium according to dry vibration parameters numerical value to the control circuit of electromagnet;
Further, membrane type magneto-rheological damper is four supports forming to surveying instrument, and described device comprises detecting instrument or running gear.
Beneficial effect of the present invention: membrane type magneto-rheological damper of the present invention and system, adopt by damping plate, " piston " structure that damped diaphragm surrounds, total quality is lighter, inertia is less, pulling back of diaphragm is utilized to act on and scratch change in conjunction with magnetorheological medium in damped diaphragm and damping plate junction, and the coefficient of scratching change is adjustable, damper assembly of the present invention is had for high frequency small amplitude motion react flexibly, can be pointed effective damping is carried out to the vibration of the little amplitude of high frequency, be applicable to the detection higher to required precision, production run occasion, ensure testing precision and traveling comfort.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is structural representation of the present invention;
Fig. 2 is damped system structural representation of the present invention.
Embodiment
Fig. 1 is structural representation of the present invention, Fig. 2 is damped system structural representation of the present invention, as shown in the figure: the membrane type magneto-rheological damper of the present embodiment, comprise cylinder body 4 and the damper assembly being positioned at cylinder body 4, described damper assembly comprises the damping plate 8 that is axially set up in parallel along cylinder body 4 in cylinder body 4 and is connected to the damped diaphragm between damping plate and cylinder body at damping plate 8 environmental seal, jointly surround damping cavity between described damping plate, damped diaphragm and cylinder body 4, in described damping cavity, fill magnetorheological medium 9; Described damped diaphragm is that elastic material is made; Described damper assembly is provided with and axially stretches out cylinder body 4 along cylinder body 4 and at least connect the damper rod 1 of damping plate at axial restraint, and that is, damper rod 1 can be fixedly connected with vertically with arbitrary damping plate, certainly, also can be fixedly connected with wherein arbitrary damping plate; Described damper rod 1 is generally used for and connects the equipment higher to required precision, to reduce to vibrate the impact on equipment;
Damper also comprises electromagnet 10 for controlling magnetorheological medium and control circuit 12 thereof.
Cylinder body 4 generally adopts cylindrical structural, is easy to the maintenance in manufacture and later stage; Due to magnetorheological medium be between damped diaphragm and damping plate can scratch vertically change may, utilize this to scratch to become and pull effect in conjunction with damped diaphragm, can vibrate to external world and make damping flexibly and react; Damped diaphragm and damping plate and inboard wall of cylinder block form a fixed connection and seal, and this is fixedly connected with any mechanical connection manner that can adopt prior art, comprise bonding, flange accommodates and connect etc., all can realize goal of the invention.
In the present embodiment, described cylinder body 4 vertically two ends is fixed with end cap (upper end cap 3 shown in figure and lower end cap 5) respectively, and described damper rod 1 stretches out end cap vertically and the end cap stretched out with it is slidably matched; There is good integrity.
In the present embodiment, described damper assembly also comprises damping compensation air bag 6, is marked with gas in air bag; Described damper rod 1 is one and stretches out one of them end cap (being upper end cap 3 in figure) of cylinder body 4; Described damping compensation air bag 6 is pressed between another end cap (lower end cap 5) of cylinder body 4 and the damping plate 8 adjacent with this end cap; Compensate dampening action by air bag, prevent due to damper assembly under larger frequency vibration due to inertia cause inharmonious, and for greater impact power, there is buffering; Certainly, compensation air bag 6 is not set and still can realizes goal of the invention, just cannot realize buffering for greater impact, damping can not be ensured preferably.
As shown in the figure, damper rod 1 is fixedly connected with vertically and passes whole damping plate (as shown being two) and be fixedly connected with and compensates air bag 6, makes the present invention have good integrity, standard; Damper rod 1 is coaxially arranged with damping plate and cylinder body, does not repeat them here.
In the present embodiment, described electromagnet 10 is fixed on cylinder body 4 around, and described cylinder body 4 and end cap (upper end cap 3 and lower end cap 5), damping plate 8 (damping plate all uses same reference character) and damper rod 1 are made by non-permeable material; Simple and compact for structure, integrity is strong, has higher working efficiency.
In the present embodiment, described damping plate 8 (damping plate all uses same reference character) and damped diaphragm 7 (damped diaphragm all uses same reference character) are two, and the axial spacing between two damping plates 8 is less than 1/2nd of damped diaphragm 7 external diameter; Formation is similar to thin slice piston structure, not only reduces inertia, can also increase the vibration frequency under equal conditions, improves the damping to dither further.
In the present embodiment, described damped diaphragm 7 is made up of elastic polymer material; There is higher intensity and good sealing, ensure the smooth and easy operation of long period of the present invention.
In the present embodiment, be provided with self-lubricating plain bearing 2 between described damper rod 1 and its end cap stretched out, there is self lubricity, ensure that the to-and-fro motion of damper rod is comparatively smooth and easy, increase work efficiency, increase damping further.
In the present invention, vibration source is fixed on the vertical direction of damper rod 1, when vibration source generation high frequency small amplitude motion, damper rod just can drive two pieces of damped diaphragms 7 to move up and down fast in cylinder body: when not being energized at electromagnet 10, there is no electromagnetic field by the magnetorheological medium 9 in cylinder body 4, therefore, the viscosity of the magnetorheological medium 9 between two pieces of damped diaphragms 7 on damper rod 1 is lower to be in a liquid state, when vibration source drives two pieces of damped diaphragms 7 to move up and down fast in cylinder body 1 by damper rod 1, because the magnetorheological medium 9 radial outside of dotted line (in the Fig. 1) between two pieces of damped diaphragms 7 is the lower liquid state of viscosity, liquid magnetorheological medium can in the space between two pieces of damped diaphragms free-flow and two pieces of damped diaphragms are moved up and down fast time damping force less, when the electromagnetic field will produced after external electromagnet energising, this electromagnetic field makes the viscosity of the magnetorheological medium in cylinder body higher, when vibration source drives two pieces of damped diaphragms to move up and down fast in cylinder body by damper rod, viscosity due to the magnetorheological medium between two pieces of damped diaphragms on now damper rod is higher is difficult to free-flow in the space between two pieces of damped diaphragms in semisolid (or class is solid-state), like this, the two pieces of damped diaphragms moved up and down fast define " semisolid piston " by driving the magnetorheological medium be between two pieces of damped diaphragms to produce mass motion, should " semisolid piston " move there is relative " friction " with the magnetorheological medium of peripheral (that is: in ring damping membrane), thus damping force when making two pieces of damped diaphragms move up and down fast in cylinder body is higher, adjustment enters the size of current of external electromagnet, i.e. the viscosity of magnetorheological medium in adjustable cylinder body, thus the damping force of membrane type magneto-rheological damper is adjusted.
The invention also discloses a kind of damped system utilizing the anti-external interference of membrane type magneto-rheological damper assurance device, as shown in the figure: comprising:
Membrane type magneto-rheological damper 15, for passing through damper rod gentle support device;
Infrastructure device 14, for settling membrane type magneto-rheological damper 15.
Infrastructure device generally comprises inspection vehicle, monitor station, work car, worktable etc.
In the present embodiment, also comprise:
Vibration parameters pick-up transducers 16, for gathering the vibration parameters of infrastructure device 14;
Central processing unit (CPU) 17, for receiving the vibration parameters of vibration parameters pick-up transducers and sending control command, for regulating the working state of magnetorheological medium according to dry vibration parameters numerical value to the control circuit of electromagnet; According to the magnetic intensity of the Vibration Condition of infrastructure device adjustment electromagnet, can be pointed carry out damping.
In the present embodiment, membrane type magneto-rheological damper is four supports forming to surveying instrument, and described device comprises detecting instrument or running gear; Form comparatively stable support.
As shown in the figure: the damper rod of four membrane type magneto-rheological damper is fixedly supported to the bottom of precision type instrument 13, bottom and the infrastructure device 14 of cylinder body 4 are fixed, and electromagnet 10 is connected with control power supply 12 by connecting line 11; Dither will be produced when infrastructure device 14 is run, dither will affect the measuring accuracy of precision type instrument 13, by adjustment (by central processing unit (CPU) or according to the fixing vibration of equipment manual tune) control circuit 12 is to the size of electromagnet 10 output current, the i.e. viscosity of magnetorheological medium 9 in adjustable cylinder body 4, adjust damping force of the present invention, thus make to be placed in the vibration that the precision type instrument 13 in infrastructure device 14 is subject to and obtain effective damping.
What finally illustrate is, above embodiment is only in order to illustrate technological scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technological scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (10)
1. a membrane type magneto-rheological damper, it is characterized in that: comprise cylinder body and the damper assembly being positioned at cylinder body, described damper assembly comprises be connected to the damped diaphragm between damping plate and cylinder body along Boring mill to the damping plate be set up in parallel with at damping plate environmental seal in cylinder body, described damping plate, between damped diaphragm and cylinder body, jointly surround damping cavity, in described damping cavity, fill magnetorheological medium; Described damped diaphragm is that elastic material is made; Described damper assembly is provided with along Boring mill to stretching out cylinder body also at least at the damper rod of axial restraint connection damping plate;
Damper also comprises electromagnet for controlling magnetorheological medium and control circuit thereof.
2. membrane type magneto-rheological damper according to claim 1, is characterized in that: described cylinder body vertically two ends is fixed with end cap respectively, and described damper rod stretches out end cap vertically and the end cap stretched out with it is slidably matched.
3. membrane type magneto-rheological damper according to claim 2, is characterized in that: described damper assembly also comprises damping compensation air bag, and described damper rod is one and stretches out one of them end cap of cylinder body; Described damping compensation air bag is pressed between another end cap of cylinder body and the damping plate adjacent with this end cap.
4. membrane type magneto-rheological damper according to claim 3, is characterized in that: described electromagnet is fixed on around cylinder body, and described cylinder body and end cap, damping plate and damper rod are made by non-permeable material.
5. membrane type magneto-rheological damper according to claim 4, is characterized in that: described damped diaphragm is made up of elastic polymer material.
6. membrane type magneto-rheological damper according to claim 5, is characterized in that: described damping plate and damped diaphragm are two, and the axial spacing between two damping plates is less than 1/2nd of damped diaphragm external diameter.
7. membrane type magneto-rheological damper according to claim 6, is characterized in that: be provided with self-lubricating plain bearing between described damper rod and its end cap stretched out.
8. utilize a damped system for the anti-external interference of membrane type magneto-rheological damper assurance device described in the arbitrary claim of claim 1 to 7, it is characterized in that: comprising:
Membrane type magneto-rheological damper, for passing through damper rod gentle support device;
Infrastructure device, for settling membrane type magneto-rheological damper.
9. damped system according to claim 8, is characterized in that: also comprise:
Vibration parameters pick-up transducers, for gathering the vibration parameters of infrastructure device;
Central processing unit (CPU), for receiving the vibration parameters of vibration parameters pick-up transducers and sending control command, for regulating the working state of magnetorheological medium according to dry vibration parameters numerical value to the control circuit of electromagnet.
10. damped system according to claim 9, is characterized in that: membrane type magneto-rheological damper is four supports forming to surveying instrument, and described device comprises detecting instrument or running gear.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310348865.2A CN103423365B (en) | 2013-08-12 | 2013-08-12 | Membrane type magneto-rheological damper and system |
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| CN201310348865.2A CN103423365B (en) | 2013-08-12 | 2013-08-12 | Membrane type magneto-rheological damper and system |
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| CN103423365A CN103423365A (en) | 2013-12-04 |
| CN103423365B true CN103423365B (en) | 2016-01-20 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104034455B (en) * | 2014-07-01 | 2016-01-06 | 重庆材料研究院有限公司 | Based on the pressure transducer of magnetorheological materials |
| CN105780958B (en) * | 2016-02-15 | 2018-08-17 | 沈阳建筑大学 | A method of anti-impact vibration damping is carried out using STF and MRF combined type anti-impact oscillation damping and energy dissipating dampers |
| CN106222987A (en) * | 2016-08-25 | 2016-12-14 | 常州纳捷机电科技有限公司 | Shock-absorbing type template cutter |
| CN106678257B (en) * | 2017-01-24 | 2018-07-06 | 东南大学 | A kind of volume compensation is isolated singly to go out pole magnetorheological damper |
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| JPH07190128A (en) * | 1993-12-28 | 1995-07-28 | Bridgestone Corp | Vibration control damper |
| CN101379317A (en) * | 2006-02-09 | 2009-03-04 | 财团法人电力中央研究所 | Fluid damper |
| JP2009180373A (en) * | 2008-01-29 | 2009-08-13 | Delphi Technologies Inc | Magnetorheological fluid-based device having magnetorheological piston assembly |
| CN202203323U (en) * | 2011-08-19 | 2012-04-25 | 谭晓婧 | Double-rod plate type magnetorheological damper |
| CN102758874A (en) * | 2012-07-17 | 2012-10-31 | 北京化工大学 | Self-adaptive variable-damping variable-stiffness shock absorber for multi-frequency component vibration of rotary machine rotator |
| CN202851794U (en) * | 2012-09-20 | 2013-04-03 | 谭晓婧 | Single-output rod annular air bag vertical-type absorber |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080053763A1 (en) * | 2006-08-31 | 2008-03-06 | Norman Wereley | System and method for self-powered magnetorheological-fluid damping |
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2013
- 2013-08-12 CN CN201310348865.2A patent/CN103423365B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07190128A (en) * | 1993-12-28 | 1995-07-28 | Bridgestone Corp | Vibration control damper |
| CN101379317A (en) * | 2006-02-09 | 2009-03-04 | 财团法人电力中央研究所 | Fluid damper |
| JP2009180373A (en) * | 2008-01-29 | 2009-08-13 | Delphi Technologies Inc | Magnetorheological fluid-based device having magnetorheological piston assembly |
| CN202203323U (en) * | 2011-08-19 | 2012-04-25 | 谭晓婧 | Double-rod plate type magnetorheological damper |
| CN102758874A (en) * | 2012-07-17 | 2012-10-31 | 北京化工大学 | Self-adaptive variable-damping variable-stiffness shock absorber for multi-frequency component vibration of rotary machine rotator |
| CN202851794U (en) * | 2012-09-20 | 2013-04-03 | 谭晓婧 | Single-output rod annular air bag vertical-type absorber |
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