CN204004155U - A kind of bipolar corrugated plate dst magneto-rheological vibration damper - Google Patents
A kind of bipolar corrugated plate dst magneto-rheological vibration damper Download PDFInfo
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- CN204004155U CN204004155U CN201420452922.1U CN201420452922U CN204004155U CN 204004155 U CN204004155 U CN 204004155U CN 201420452922 U CN201420452922 U CN 201420452922U CN 204004155 U CN204004155 U CN 204004155U
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Abstract
The utility model discloses a kind of bipolar corrugated plate dst magneto-rheological vibration damper, comprise a housing and an inside casing, have a cavity in inside casing, cavity middle part is fixed with core iron piece, and core iron piece both sides are respectively equipped with coil winding; Inside cavity is placed with slide plate, and slide plate and cavity inner surface all exist gap, and gap accommodates magneto-rheological fluid; Housing surrounding inner side is fixed with guide pillar, the guide pillar the other end enters inside cavity and slide plate dynamic binding through inside casing, slide plate is under guide pillar promotes, in cavity, do relative sliding, slide plate drives magneto-rheological fluid to do shearing motion and pressure reduction flows, the damping force that magneto-rheological fluid is magneto-rheological vibration damper to the reaction force of slide plate; The utility model adopts corrugated plate dst slide plate to replace the working piston of magneto-rheological vibration damper, adopt bipolar loop construction, corrugated plate dst piston can be worked under bipolar coil acts on simultaneously, can provide the region of change of magnetic field strength in a big way for magnetic flow liquid like this.
Description
Technical field
The utility model relates to automobile shock equipment technical field, and specifically, the utility model relates to a kind of bipolar corrugated plate dst magneto-rheological vibration damper.
Background technique
In the design of magneto-rheological vibration damper, can quote the basic thought in the hydraulic suspension in high utmost point car, hydraulic oil produces damping by damping hole, and the elastic force of spring is the reply for central position.Certainly the design philosophy of magneto-rheological vibration damper is no exception, usings the elastic force of spring as restoring force, controls the variation of damping force by the change of magnetic intensity, carries out half ACTIVE CONTROL of vibration system.
The utility model is mainly used in the vibration damping operating mode of the shear-loaded of vibratory roller vibration steel wheel.When magneto-rheological vibration damper is in running order, under steel wheel state of equilibrium, displacement is zero, and speed is zero, and the elastic force of spring just equals the gravity of vehicle frame, and damping force is zero.When vibration steel wheel is upwards vibrated by equilibrium position, steel wheel speed changes to minimum from maximum, and excitation force and velocity reversal, change from small to big, and steel wheel is to impact to vibration damper with larger inertia.By the adjusting of magnetic intensity, make damping force become large, it is large that spring force becomes gradually along with the increase of distortion, spring and damping absorb from steel wheel the impact energy to vehicle frame, and vehicle frame is because of its great quality, larger inertia, so when spring and damping impact-absorbing, self vibrates minimum.On the contrary, when steel wheel is vibrated downwards by equilibrium position, damping is adjusted to minimum, with the stretching, extension of spring, supplements the space of stretching out, and the weight of the elastic force of spring and damping force balance frame makes the displacement of vehicle frame minimum.From extreme higher position to equilibrium position, the vibration from extreme lower position to equilibrium position is also same reason to steel wheel.Generally speaking, vibration damper is the flexibly jointed chain place between vehicle frame and steel wheel.
In vibratory roller, to introduce vibration on the one hand, make vibrating wheels produce excitation force, by vibrating better compacted subgrade, and farthest utilize the energy vibrating; To take vibration damping on the other hand, by vibration damper, reduce the transmission of vibrating wheels to vehicle frame and seat vibration energy.That is to say, we will reduce the constraint to vibrating wheels, reduce its damping force, improve vibration efficiency, strengthen simultaneously get on the bus and vibrating wheels between effectiveness in vibration suppression, make its less transmitting vibrations.
Conventionally, vibration damping is by suppressing the methods such as vibration source intensity, vibration isolation, weakening, reducing oscillating body to the transmission of damping body vibrational energy.Concrete vibration attenuation mechanism is as follows:
A, inhibition vibration source intensity.For example, high speed rotor is carried out to perfect dynamic balancing, reduce the excitation force that its unbalance mass, produces.Or, road surface is spread smoothly as far as possible, alleviate its excitation to motion wheel.Reduce in addition the wind-exposuring area of tall building. alleviate the wind that it bears and carry.All these is the technical measures that suppress vibration source intensity.
B, vibration isolation.Between vibration source and damping body, inject soft liner, rely on its distortion to alleviate the excitation of vibration source to damping body, be commonly referred to vibration isolation.Device for vibration isolation is called vibration isolator.For example, the pneumatic tire of automotive wheel outer rim, the wooden unit basis under plummet base, the foamed plastics packings in instrumentation package case etc., are all common vibration isolators.
C, weakening.Additional special device on damping body, relies on it and damping body to interact, and absorbs the kinetic energy of vibration system.Thereby reduce the ocsillator strenght of damping body, weakening that Here it is.Device for weakening is called vibration absorber.For example, stick on the high damping rate viscoelastic material in both firewall, the movable mass that is arranged on high flexible top of building is all vibration absorber.
Along with progress and the raising of people to effectiveness in vibration suppression requirement of technology, vibration damping theory turns to active damping from passive insulation.And all vibration damping modes are all from 2 points (K, rigidity; C, damping) incision.MR damper has good quality, and its characteristic is as follows:
1) damping force is large; 2) damping is adjustable, and regulation range is wide; 3) thermal adaptability is strong, good environmental adaptability; 4) fast response time; 5) energy consumption is low; 6) efficient; 7) long service life; 8) feature such as easy to maintenance, not only can be used as conventional passive energy dissipator but also be half desirable ACTIVE CONTROL driver.
In view of rheological properties and the MR damper fine quality of magnetic converting technique uniqueness, thus magnetic converting technique is introduced to the vibration damping aspect of vibratory roller, to replace the nonadjustable shortcoming of current rubber shock absorber damping.
Magneto-rheological vibration damper: at present, the main composition piston rod of magneto-rheological vibration damper does reciprocating linear motion in cylinder body, between piston rod and cylinder body, there is less gap, magnetic rheological liquid is at gap intercropping extruding, shearing motion, if to coil electricity, the upper coil of the match of living changes around utmost point part magnetic intensity, and magnetic flow liquid viscosity also changes thereupon, output damping force becomes large, and this is the groundwork principle of magneto-rheological vibration damper.
Common structural type has single rod and two kinds, two bars at present, that is: piston rod is from one end of cylinder body, to stretch out (single rod), or from two ends, all stretches out (two rod)
The vibration damper of prior art comprises following:
(1) rubber shock absorber: conventionally, the material of the rubber shock absorber that vibratory roller uses has two kinds, the one, natural rubber, another-kind be nitrile butadiene rubber.The vibration damper that natural rubber is made has good mechanical property, easy to process, has good elasticity, stability and resistance to property at sunshine.Therefore, the vibration damper of some vibratory rollers is used natural rubber manufacture.But natural rubber damping is little, not bery safe during by resonance region.When by resonance region, the amplitude of getting on the bus of vibratory roller is very large.In addition, the oil resistance of natural rubber is poor, and after the vibration damper contact greasy dirt of vibratory roller, rubber deforms, and follows the string, and severe patient vibration damper will be scrapped.In light of this situation, use at present vibration damper that natural rubber manufactures seldom.Nitrile butadiene rubber has good oil resistance and the larger advantages such as damping, is the material of good manufacture vibration damper.At present, the vibration damper of vibratory roller adopts nitrile butadiene rubber manufacture widely, but the price comparison of nitrile butadiene rubber is high.Present market is exactly rubber shock absorber use, and the shortcoming of technological scheme rubber shock absorber is as follows: 1) high temperature resistant, poor performance at low temperatures; 2) resistance to sunshine poor performance; 3) oil resistance is poor; 4) working life low, after long-term use, elasticity reduces, damping property variation; 5) damping is non-adjustable; 6) damping efficiency is low; 7) non-renewable, not environmental protection etc.
(2) for listed technical problem, applicant proposes a kind of magnetorheological-rubber combined shearing type MR vibration damper in early stage, and obtain utility model patent mandate utility model patent mandate (utility model patent number: 200810070631.5, notice of authorization number: CN101235864), the One-Dimension Magnetic rheological damper of take is carried out the design of shearing type MR vibration damper, the engineering drawing that Fig. 2 is vibration damper as starting point.Vibration damper is mainly comprised of front and back side plate, piston rod, cylinder body, rubber and accessory, wherein piston rod and a side plate are fixed, cylinder body is fixed by rubber and another piece side plate, and rubber is used for producing damping on the one hand, plays a part on the other hand to shear to reset; The biside plate of vibration damper is connected with two parts treating vibration damping equipment respectively.When vibration damper is worked, biside plate, along cylinder body axial direction parallel, makes to produce relative movement between piston rod and cylinder body, by changing the operating current of drive coil on piston rod, change the magnetic intensity of field circuit, realize the adjustable of absorber damping force size.
Prior art scheme (2) is owing to being magnetorheological-building rubber compound, so also there is to a certain extent above-mentioned other shortcoming except " 5) damping non-adjustable ".
Model utility content
The purpose of this utility model is to provide a kind of bipolar MR vibration damper that adopts corrugated plate dst piston to do shearing motion in magneto-rheological fluid.
The technological scheme that the utility model provides is: a kind of bipolar corrugated plate dst magneto-rheological vibration damper, comprise a housing and an inside casing, and in inside casing, there is a cavity, cavity middle part is fixed with core iron piece, and core iron piece both sides are respectively equipped with coil winding; Inside cavity is placed with slide plate, and slide plate and cavity inner surface all exist gap, and gap accommodates magneto-rheological fluid; Housing surrounding inner side is fixed with guide pillar, the guide pillar the other end enters inside cavity and slide plate dynamic binding through inside casing, slide plate is under guide pillar promotes, in cavity, do relative sliding, slide plate drives magneto-rheological fluid to do shearing motion and pressure reduction flows, the damping force that magneto-rheological fluid is magneto-rheological vibration damper to the reaction force of slide plate; On guide pillar, be provided with for the restoring force disk spring after housing moves with respect to inside casing is provided, disk spring is arranged between housing and inside casing.
The inner side of the every periphery of described housing is evenly equipped with two guide pillars.
Described outer arch is fixed with overlay.
Described interior frame bottom is fixed with the base plate of supporting-core iron block and coil winding.
Described slide plate is corrugated sheet, the surface of corrugated sheet is ripples shape concentric circle, and sectional shape is for being distributed in distance and having peak valley and peak base, and the sectional shape of described corrugated sheet can be ripple glaze shape, or be zigzag fashion, also can adopt sectional shape is the corrugated sheet of square peak valley and peak base.
The utlity model has following advantage:
The utility model adopts corrugated plate dst slide plate to replace the working piston of magneto-rheological vibration damper, adopt bipolar loop construction, corrugated plate dst piston can be worked under bipolar coil acts on simultaneously, can provide the region of change of magnetic field strength in a big way for magnetic flow liquid like this.Sled surface adopts wave-like type panel that larger damping adjustable power can be provided
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by the detailed description with reference to below, can more completely understand better the utility model and easily learn wherein many advantages of following, but accompanying drawing described herein is used to provide further understanding of the present utility model, form a part of the present utility model, schematic description and description of the present utility model is used for explaining the utility model, does not form to improper restriction of the present utility model, wherein:
Fig. 1 is plan view of the present utility model
Fig. 2 is that B-B in Fig. 1 is to sectional view
Fig. 3 is that A-A in Fig. 1 is to sectional view.
Fig. 4 is second embodiment's sectional shape form of the utility model corrugated sheet;
Fig. 5 is the 3rd embodiment's sectional shape form of the utility model corrugated sheet.
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
In conjunction with Fig. 1, Fig. 2, Fig. 3, the utility model is described in detail as follows:
A kind of bipolar corrugated plate dst magneto-rheological vibration damper of the present utility model, comprises a housing 1 and an inside casing 2, has a cavity 3 in inside casing 1, and cavity 3 middle parts are fixed with core iron piece 4, and core iron piece 4 both sides are respectively equipped with coil winding 5; Housing 1 top is fixed with overlay 6, and inside casing 2 bottoms are fixed with the base plate 7 of supporting-core iron block 4 and coil winding 5, and cavity 3 inside are placed with slide plate 8, and slide plate 8 all exists gap with cavity 3 internal surfaces, and gap accommodates magneto-rheological fluid 9;
The inner side of housing 1 every periphery is evenly equipped with two guide pillars 10, guide pillar 10 the other ends enter cavity 3 inside and slide plate 8 dynamic bindings through inside casing 2, eight guide pillars are divided into vertical, horizontal both direction, four, each direction, when housing 1 moves with respect to inside casing 2, its active force and displacement all can be vertical, horizontal both direction resolves into orthogonal two component, displacement component, each guide pillar 10 all slides along its axis, promote slide plate 8 motions, slide plate 8 is under guide pillar 10 promotes, in cavity 3, do relative sliding, slide plate 8 drives magneto-rheological fluid 9 to do shearing motion and pressure reduction flows, the damping force that the reaction force of 9 pairs of slide plates 8 of magneto-rheological fluid is magneto-rheological vibration damper, on guide pillar 10, be provided with for the restoring force disk spring 11 after housing 1 moves with respect to inside casing 2 is provided, disk spring 11 is arranged between housing 1 and inside casing 2.
The relative movement more complicated of each parts of the bipolar corrugated plate dst magneto-rheological vibration damper of the utility model.When housing 1 is done the motion of any direction with respect to inside casing 2, displacement and power all can resolve into the componental movement of two directions in length and breadth, and housing 1 is when promoting guide pillar 10 motion, and housing 1 is done slip perpendicular to axial direction with respect to guide pillar 10 simultaneously.In like manner, inside casing 2 cavity 3 inner sliders 8 are also that guide pillar 10 promotes its motion, and slide plate 8 slides with respect to guide pillar 10 simultaneously.
As accompanying drawing 2, Fig. 3, slide plate of the present utility model is corrugated sheet, and the surface of corrugated sheet is ripples shape concentric circle, and sectional shape is be distributed in distance and have the ripple glaze shape of peak valley and peak base, and slide plate adopts wave-like type panel that larger damping adjustable power can be provided
Go out as shown in Figure 4; the sectional shape of corrugated sheet or be zigzag fashion; also can adopt sectional shape is the corrugated sheet (going out as shown in Figure 5) of square peak valley and peak base, and this distortion is all within the protection domain of the clearly disclosed sectional shape with peak valley and peak base of the present utility model.
The working piston of the utility model magneto-rheological vibration damper adopts corrugated plate dst, and corrugated plate dst piston can be worked under bipolar coil acts on simultaneously, like this can be for magnetic flow liquid provides the region of change of magnetic field strength in a big way, and adopt disk spring energy storage.
The explanation of above example is just for helping to understand core concept of the present utility model; , for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model meanwhile.
Claims (7)
1. a bipolar corrugated plate dst magneto-rheological vibration damper, comprises a housing and an inside casing, has a cavity in inside casing, and cavity middle part is fixed with core iron piece, and core iron piece both sides are respectively equipped with coil winding; Inside cavity is placed with slide plate, and slide plate and cavity inner surface all exist gap, and gap accommodates magneto-rheological fluid; Housing surrounding inner side is fixed with two guide pillars, the guide pillar the other end enters inside cavity and slide plate dynamic binding through inside casing, slide plate is under guide pillar promotes, in cavity, do relative sliding, slide plate drives magneto-rheological fluid to do shearing motion and pressure reduction flows, the damping force that magneto-rheological fluid is magneto-rheological vibration damper to the reaction force of slide plate; On guide pillar, be provided with for the restoring force disk spring after housing moves with respect to inside casing is provided, disk spring is arranged between housing and inside casing, it is characterized in that, described slide plate is corrugated sheet, the surface of corrugated sheet is ripples shape concentric circle, and sectional shape is for being distributed in distance and having peak valley and peak base.
2. a kind of bipolar corrugated plate dst magneto-rheological vibration damper according to claim 1, is characterized in that, the sectional shape of described corrugated sheet is ripple glaze shape.
3. a kind of bipolar corrugated plate dst magneto-rheological vibration damper according to claim 1, is characterized in that, the sectional shape of described corrugated sheet is zigzag fashion.
4. a kind of bipolar corrugated plate dst magneto-rheological vibration damper according to claim 1, is characterized in that, the sectional shape of described corrugated sheet is square peak valley and peak base.
5. a kind of bipolar corrugated plate dst magneto-rheological vibration damper according to claim 1, is characterized in that, the inner side of the every periphery of described housing is evenly equipped with guide pillar.
6. a kind of bipolar corrugated plate dst magneto-rheological vibration damper according to claim 1, is characterized in that, described outer arch is fixed with overlay.
7. a kind of bipolar corrugated plate dst magneto-rheological vibration damper according to claim 1, is characterized in that, described interior frame bottom is fixed with the base plate of supporting-core iron block and coil winding.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420452922.1U CN204004155U (en) | 2014-08-12 | 2014-08-12 | A kind of bipolar corrugated plate dst magneto-rheological vibration damper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104179876A (en) * | 2014-08-12 | 2014-12-03 | 福建工程学院 | Bipolar corrugated plate magnetorheological damper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179876A (en) * | 2014-08-12 | 2014-12-03 | 福建工程学院 | Bipolar corrugated plate magnetorheological damper |
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