CN103867630A - Magnetorheological energy absorber with failure-safety performance - Google Patents
Magnetorheological energy absorber with failure-safety performance Download PDFInfo
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- CN103867630A CN103867630A CN201410133714.XA CN201410133714A CN103867630A CN 103867630 A CN103867630 A CN 103867630A CN 201410133714 A CN201410133714 A CN 201410133714A CN 103867630 A CN103867630 A CN 103867630A
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Abstract
The invention discloses a magnetorheological energy absorber with failure-safety performance. The magnetorheological energy absorber with the failure-safety performance is characterized in that an inner cylinder body and an outer cylinder body form a sleeve barrel structure with two sealed ends, a piston is arranged inside the inner cylinder body, a hollow cavity of the inner cavity body is an inner cavity, an annular outer cavity is formed between the inner cylinder body and the outer cylinder body, the piston divides the inner cavity into a front cavity and a rear cavity, the lateral walls, located at the front end and the rear end of the inner cavity, of the front cavity and the rear cavity are respectively provided with a liquid flowing hole, the inner cavity and the outer cavity are communicated through the liquid flowing holes, magnetorheological liquid fills the inner cavity and the outer cavity, an annular groove is formed in the outer lateral wall of the inner cylinder body and/or the inner lateral wall of the outer cylinder body, electromagnetic coils and permanent magnets are arranged inside the annular groove, and a magnetic field produced by the permanent magnets and the electromagnetic coils is cut by two sides of the inner cylinder body and the two sides of the groove to effectively surround the outer cavity and the outer cylinder body, so that a closed magnetic flow loop is formed. The magnetorheological energy absorber and a semi-active control system of the magnetorheological energy absorber provide the reliable failure-safety performance and effectively widen application occasions.
Description
Technical field
The present invention relates to utilize magnetic flow liquid to carry out the technical field of vibration damping, relate in particular to a kind of magnetorheological acceptor of energy with inefficacy-Safety performance that is applicable to vibration/shock control system.
Background technique
Magnetorheological (Magnetorheological) liquid is a kind of ferromagnetic particle suspension, the change of a series of fast (ms levels), reversible physical property occurs under magnetic fields, i.e. magnetic rheology effect.Magnetic flow liquid in the time there is no magnetic fields, the disorderly and unsystematic arrangement of ferromagnetic particle that suspends in magnetic flow liquid, now magnetic flow liquid shows as Newtonian fluid feature.In the time applying magnetic field at magnetic flow liquid two ends, ferromagnetic particle externally just shows magnetic, neatly line up chain structure according to magnetic line of force direction, the power of chain structure and the size of magnetic intensity are directly related, destroy this chain structure and just need to overcome the shearing stress that magnetic flow liquid produces.
Magnetorheological acceptor of energy is one of typical case application of magnetic flow liquid, because this half active actuators part not only responds soon, damping force is large, simple in structure, the little and easy alternative passive acceptor of energy of good endurance, institute's energy requirement.There is the magnetorheological acceptor of energy of different structure and performance studied or be applied to various vibration control systems, as automotive suspension, train suspension, aircraft stability augmentation system and other half active vibration/impulsive control system.But for magnetorheological half active vibration/impulsive control system, because the passive damping of magnetorheological acceptor of energy in the time not controlling is very little, therefore in the time of control system inefficacy or power cut-off, half active vibration/impulsive control system will lose its predefined control effect, and what situation was serious even can cause using magnetorheological half active control system to carry out structural failure and the casualties of the whole system of vibration/shock control.What therefore how on magnetorheological acceptor of energy, integrated a kind of inefficacy-Safety performance became magnetorheological half active vibration/impulsive control system must consider content.
Based on this, a kind of magnetorheological fluid damp device for automotive suspension is disclosed in Chinese invention patent " a kind of magnetorheological suspensions damping device for automobile suspension system " (publication number: CN1603651), in this magnetorheological fluid damp device, be provided with permanent magnet and electromagnetic coil acting in conjunction in magnetic flow liquid circulation road, electric current in electromagnetic coil is by bi-directional design, realize the control to magnetic intensity in damp channel, reduce the field current in electromagnetic coil, reduce energy consumption, reduce the heating of acceptor of energy.This magnetorheological fluid damp device can meet the inefficacy-Safety performance requirement for magnetorheological half active vibration/impulsive control system, but the application requirements of speed-controllable damping ratio seems awkward.
In addition, many Chinese scholars are conducting in-depth research aspect magnetic flow liquid material, attempt to change magnetic flow liquid from material structure, make it have more good sedimentation function.But, as described above, magnetic flow liquid is ferromagnetic particle suspension, ferromagnetic material certainly will be than liquid carrying weight, even if delayed to a certain extent the precipitation of magnetic flow liquid by changing ferromagnetic materials surface Active agent or liquid carrying viscosity, the deposited phenomenon of magnetic flow liquid can not fundamentally be resolved.
Therefore, not only meet the performance requirement of lost efficacy-safety in order to realize magnetorheological acceptor of energy, and there is the mechanics control performance requirement of vibration/shock, and structurally solving to a certain extent the sedimentation problem of magnetic flow liquid, it is the current problem that should solve that the structure that proposes a kind of more superior design principle and magnetorheological acceptor of energy satisfies the demands.
Summary of the invention
The present invention is for avoiding the existing deficiency of above-mentioned prior art, a kind of magnetorheological acceptor of energy with inefficacy-Safety performance is provided, be limited in scope for magnetorheological acceptor of energy controllable damping force in prior art and dynamic antivibration ratio, the magnetic flow liquid using in magnetorheological acceptor of energy easily precipitates and is applicable to the features such as the control system inefficacy-Safety performance requirement of the vibration control system of high-stability requirement, propose in the outside dimensions that does not change existing magnetorheological acceptor of energy, under the prerequisite of the energy consumption of field current and magnetorheological acceptor of energy, realize a kind of by inefficacy-Safety performance, antisolvent precipitation performance and large controllable damping force and dynamic antivibration than performance function in the magnetorheological acceptor of energy of one.
The present invention is that technical solution problem adopts following technological scheme:
The structural feature that the present invention has the magnetorheological acceptor of energy of inefficacy-Safety performance is: the tube-in-tube structure that is formed closed at both ends by inner cylinder body and outer cylinder body, in described inner cylinder body, be provided with the piston that can slide along the inwall of described inner cylinder body, take the hollow cavity of described inner cylinder body as inner chamber body, between described inner cylinder body and outer cylinder body, be formed with annular outer-cavity body, described inner chamber body is divided into front cavity and rear chamber by piston, in described front cavity and rear chamber, lay respectively on the rear and front end sidewall of described inner cylinder body and be provided with liquid flow hole, so that described inner chamber body and outer chamber are connected by liquid flow hole, magnetic flow liquid is filled in described inner chamber body and outer chamber, on the outer side wall of described inner cylinder body and/or the madial wall of described outer cylinder body, be provided with annular groove, electromagnetic coil and permanent magnet are set in described annular groove, described electromagnetic coil and the permanent magnet form with inside and outside intussusception in same annular groove arranges in pairs or arranges respectively in different annular grooves, described electromagnetic coil and permanent magnet are at least respectively one, the magnetic field producing with described permanent magnet and electromagnetic coil through the shearing of inner cylinder body, groove both sides effectively ring, outer chamber and outer cylinder body form closed flux circuit, be in magnetic line of force opposite direction between closed flux circuit adjacent in described sleeve axis direction, described inner cylinder body, outer cylinder body and shearing effectively ring are take permeability magnetic material as material.
The structural feature that the present invention has the magnetorheological acceptor of energy of inefficacy-Safety performance is also:
Described permanent magnet, electromagnetic coil, inner cylinder body and outer cylinder body are coaxial setting, and the permanent magnet and the electromagnetic coil that are in same annular groove can be exchanged inside and outside mounting point.
Fixing seal is located by end cap respectively in the two ends of described inner cylinder body and outer cylinder body, described piston be have main piston rod and auxiliary piston rod two go out rod piston, described main piston rod and auxiliary piston rod stretch out respectively in the end cap of corresponding one end.
Fixing seal is located by end cap respectively in the two ends of described inner cylinder body and outer cylinder body, described piston be there is single-ended piston rod singly go out rod piston, described piston rod at one end stretches out in end cap, is provided with compensation air bag on the other end end cap.
The end cap at described two ends is take non-magnetic material as material.
Described liquid flow hole edge on the sidewall of inner cylinder body has been arranged circumferentially some.
Described groove and described the shearing effectively joint number of ring are at least a joint, and its extreme length depends on interior outer cylinder body length.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the present invention is equipped with electromagnetic coil and permanent magnet, make magnetorheological acceptor of energy there is inefficacy-Safety performance, in the time of half active control system inefficacy or control system power failure, can provide reliable mechanics demand for system, can not cause system crash situation;
2, the present invention arranges permanent magnet on inner cylinder body outer wall or outer cylinder body inwall, ferromagnetic particle composition in magnetic flow liquid is attached on the closed flux circuit of permanent magnet generation mostly, mainly effectively to encircle in liquid chunnel radially in shearing, that is to say that magnetic flow liquid fixes substantially on inefficacy-safety circuit, owing to being subject to the adsorption force effect in magnetic field, magnetic flow liquid no longer causes precipitating on a large scale so that losing efficacy owing to being subject to the impact of gravity, this magnetorheological acceptor of energy structure can solve the sedimentation problem of magnetic flow liquid in magnetorheological acceptor of energy effectively,
3, the present invention arranges inside and outside twin-rotor housing structure, has abandoned electromagnetic coil-piston mode, makes magnetorheological acceptor of energy can utilize to greatest extent the length of cylinder body, has maximized the piston movement stroke of magnetorheological acceptor of energy;
4, in the present invention because stroke of piston is mutual decoupling zero with shearing the effectively length of ring, therefore its controllable damping force performance, comprise dynamic antivibration than and controllable damping force scope, can be optimized significantly and be increased;
5, compare to the magnetorheological acceptor of energy of existing piston-coil type, in the present invention, electromagnetic coil is fixed on inner cylinder body outer wall or outer cylinder body inwall, can more easily protect like this electromagnetic coil, can not cause due to the compression of piston, recovery motion the fatigue damage of electromagnetic coil or lead-in wire;
6, the present invention can realize by add inner cylinder body in the outer cylinder body of existing original-pack passive acceptor of energy, compares to the magnetorheological acceptor of energy of piston-coil type, and structure is more simple and reliable;
7, magnetic flow liquid used in the present invention still less, but but can provide better controllable damping mechanics performance and inefficacy-Safety performance and diamagnetic rheology liquid precipitate performance, therefore the utilization efficiency of its magnetic flow liquid is higher, this magnetorheological acceptor of energy to realize cost lower.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention 1 structural representation;
Fig. 2 A, Fig. 2 B and Fig. 2 C are respectively A place sectional drawing in Fig. 1 flux circuit schematic diagram not adding field current, while adding reverse field current and forward field current condition;
Fig. 3 is the experimental results figure of the embodiment of the present invention 1;
Fig. 4 is the embodiment of the present invention 2 structural representations;
Fig. 5 is the embodiment of the present invention 3 structural representations;
Fig. 6 is the embodiment of the present invention 4 structural representations;
Embodiment
Referring to Fig. 1, be the first embodiment's of a kind of magnetorheological acceptor of energy with inefficacy-Safety performance provided by the invention structure sectional view, Fig. 2 A, Fig. 2 B and Fig. 2 C are the flux circuit schematic diagram of A-A profile position in the time of different exciting condition in Fig. 1.
The magnetorheological acceptor of energy 100 with actual effect-Safety performance of Fig. 1 mainly comprises: coaxial mounted inner cylinder body 101 and outer cylinder body 102, piston 103 in inner cylinder body, is arranged at the permanent magnet 124 outside inner cylinder body 101 and is wound on electromagnetic coil 115 and the magnetic flow liquid 104 on permanent magnet 124.
Wherein, inner cylinder body 101 is arranged in outer cylinder body 102, and then between forms the outer chamber 105 of interlayer.The inside of inner cylinder body 101 be illustrated inner chamber body 106, and magnetic flow liquid 104 is filled in inner chamber body 106 and outer chamber 105.At least respectively there is the liquid flow hole 107A, the 107B that pass through for magnetic flow liquid in two ends 121A, the 121B of inner cylinder body 101. Liquid flow hole 107A, 107B on magnetic flow liquid circulation road 123, inner cylinder body 101 two ends 121A, the 121B forming between inner cylinder body 101 and outer cylinder body 102 is used to the fluid communication channels between inner chamber body 106 and outer chamber 105 that circulates in of magnetic flow liquid 104.
The piston 103 that wherein, can be free to slide along inner cylinder body 101 inwalls comprises piston rod 108 and is connected in the piston head 122 on piston rod 108.The concentric piston ring 109 arranging on piston head 122 is used to packed-piston 103 with inner cylinder body 101 and inner cylinder body 101 is divided into two parts, be respectively also front cavity of piston rod cavity 106A, and piston cavity 106B is also rear chamber.In the time that piston 103 moves along piston rod 108 directions in inner cylinder body 101, magnetic flow liquid 104 is extruded from the piston rod cavity 106A of inner chamber body 106 and flows out and pass through liquid flow hole 107A to outer chamber 105, arrives piston cavity 106B along outer chamber 105 through liquid flow hole 107B.In the time that piston 103 moves round about, the flow direction of magnetic flow liquid 104 is contrary.
Wherein, the thickness operated by rotary motion of the magnetic flow liquid circulation road 123 between inner cylinder body 101 and outer cylinder body 102, at 0.5-3mm, depends on the mechanical property requirements of specific applied environment to magnetorheological acceptor of energy. Liquid flow hole 107A, 107B, meeting under the fixing prerequisite of inner cylinder body 101 and outer cylinder body 102 and can expanding as much as possible, to reduce to greatest extent the Passive damping force of magnetorheological acceptor of energy 100, maximize its controllable damping ratio and controlled speed scope.The quantity of liquid flow hole 107A, 107B can be but not necessarily be confined to three or four or five.
Wherein, magnetorheological acceptor of energy 100 uses upper end cap 110 that inner cylinder body 101 and outer cylinder body 102 are realized to connection and guaranteed the coaxality between the two.The mode of this connection inner cylinder body 101 and upper end cap 110 and outer cylinder body 102 and upper end cap 110 can be but be not limited to screw thread, fastening piece or other modes.U-RunddichtringO 111 is used to the leakage that packed-piston bar 108 stops magnetic flow liquid 104.O-RunddichtringO 118A, 118B are arranged at respectively between the inwall of upper end cap 110 and outer cylinder body 102 and lower end cap 113 and outer cylinder body 102 inwalls to realize seal action.Drawing wire 112 can be connected with outside controllable electric power through the through hole on upper end cap 110.The sealing means of through hole 110 can be epoxy resin or as the electrical connection device of U. S. Patent (patent No.: 7900755B2).Lower end cap 113 makes to keep coaxial between the two as location inner cylinder body 101 and outer cylinder body 102 on the one hand, above compensation air bag 114 can being arranged on the other hand.The effect of compensation air bag 114 is volume differences that compensating piston bar 108 produces while passing in and out inner cylinder body 101 or when temperature variation.As the U. S. Patent (patent No.: 4811919) the compensation air bag of disclosed floating piston form can be used as volume compensation device equally, and the present embodiment does not limit to.
Wherein, the material of inner cylinder body 101 and outer cylinder body 102 is preferential selects but is not limited to high permeability material.And the preferential non-magnet materials such as stainless steel or aluminium of selecting of piston rod 108, upper end cap 110 and lower end cap 113.
Wherein, five permanent magnets 124 and within the electromagnetic coil 115 on it is all arranged at five grooves on inner cylinder body 101 outer walls around the home.The quantity of permanent magnet and around the home quantity, the number of turn and the width of the electromagnetic coil on it all can be determined according to the attribute of actual application demand and magnetorheological acceptor of energy self.
Wherein, Fig. 2 A has provided do not pass into field current on electromagnetic coil 115E time the magnetic line of force situation at A view place in Fig. 1, and closed flux circuit 116E is now produced by permanent magnet 124E effect.Flux circuit 116E is produced by permanent magnet 124E and effectively encircles 117F through magnetic flow liquid along shearing, and along outer cylinder body 102, effectively encircles 117E closure in inner cylinder body 101 afterwards through magnetic flow liquid and then along shearing.Fig. 2 B has provided pass into reverse field current on electromagnetic coil 115E time the magnetic line of force situation of A view in Fig. 1.The magnetic line of force 126E being produced by permanent magnet 124E and the magnetic line of force 116E opposite direction being produced by electromagnetic coil 115E, the two weakens mutually, that is to say, the magnetic intensity of shearing effective ring 117E, 117F place is weakened, reduce the viscosity of magnetic flow liquid, thereby reduced the damping force of magnetorheological acceptor of energy.Fig. 2 C has provided pass into forward field current on electromagnetic coil 115E time the magnetic line of force situation of A view in Fig. 1.The magnetic line of force 126E being produced by permanent magnet 124E is identical with the magnetic line of force 116E direction being produced by electromagnetic coil 115E, the two is strengthened mutually, that is to say, the magnetic intensity of shearing effective ring place is enhanced, increase the viscosity of magnetic flow liquid, thereby increased the damping force of magnetorheological acceptor of energy.Based on this, even if the magnetorheological acceptor of energy with inefficacy-Safety performance is the in the situation that of powersupply system or the inefficacy of half active control system, also can provide safe electromagnetic circuit as shown in Figure 2 A, i.e. Fail safe performance of damping force for system.And, in the time of the positive and negative direction by control inputs electric current, can realize the two-way control of damping force, controllable damping force scope is further broadened.
It should be noted that magnetic line of force 116A, 116B that the electromagnetic coil 115A, the 115B that permanent magnet 124A, 124B, 124C, 124D, 124E are set and are connected with field current, 115C, 115D, 115E produce, 116C, 116D, 116E as shown in Figure 1.Closed flux circuit and effective shearing ring 117A, 117B, 117C, 117D, 117E, the 117F of magnetic flow liquid 104 form between inner cylinder body 101 and outer cylinder body 102.The direction that the direction of winding of two adjacent electromagnetic coils 115 and permanent magnet 124 produce magnetic field should arrange and could form five closed flux circuits on the contrary, and width 125 operated by rotary motion that electromagnetic coil 115, permanent magnet 124 and shearing effectively encircle, at 5-15mm, could at utmost be applied like this to shear effectively and encircle 117.In outer chamber 105, the direction in magnetic field can be perpendicular to the magnetic flow liquid 104 along effective shearing ring 117A, 117B, 117C, 117D, 117E, 117F circulation.The attribute of the magnetic flow liquid 104 of circulation will be controlled by 115 field currents on electromagnetic coil.The controllable damping force performance of magnetorheological acceptor of energy 100 will be that two factors determine: velocity of piston and the magnetic flow liquid 104 that is subject to electromagnetic field control.
Referring to Fig. 3, be the experimental results of the magnetorheological acceptor of energy with inefficacy-Safety performance provided by the invention, also verify the magnetic line of force trend shown in accompanying drawing 2 and the controllable damping force effect of prediction from experimental viewpoint.Different from traditional magnetorheological acceptor of energy that is only provided with electromagnetic coil 115, this test experiments result of the present invention, controllable damping force has bidirectional characteristic.At obstructed field current (I=0A) on electromagnetic coil time, now magnetorheological acceptor of energy of the present invention, in inefficacy-safe condition, can be vibration/shock control system a kind of damping force is reliably provided; Pass into back current on electromagnetic coil time (I=-0.5A), the damping force of magnetorheological acceptor of energy of the present invention will further be reduced, and we know, this reducing will or be impacted effectively and control dither; And pass into forward current on electromagnetic coil time (I=1.5A), the damping force of magnetorheological acceptor of energy of the present invention will further be increased on the basis in inefficacy-safe damping force, and this increase will provide half optimum active actuators part function for low-frequency vibration control.So, realize the situation of two-way controllable force, can effectively expand the application of magnetorheological acceptor of energy.Not only like this, in figure 3, the controllable damping force of magnetorheological acceptor of energy and all non-constant widths of dynamic antivibration ratio that can be calculated thus.
Referring to Fig. 4, it is the second embodiment's of a kind of magnetorheological acceptor of energy with inefficacy-Safety performance provided by the invention structure sectional view.On the first embodiment basis shown in Fig. 1, electromagnetic coil 215 is directly arranged among inner cylinder body 201 unit with grooves in outer walls, then permanent magnet 224 is passed through to certain mode, mode is not limit, be mounted on outside electromagnetic coil 215, and be arranged among groove with electromagnetic coil 215 simultaneously.In addition, connect from pass through screw thread or other modes shown in accompanying drawing 1 that to shear the mode of effectively ring 117 and inner cylinder body 101 different, embodiment two shown in accompanying drawing 4 effectively encircles shearing with inner cylinder body 201 and is set to one, such advantage is the raising electromagnetic energy that can improve, needn't consider again to cause due to the problem of installing the loose leakage of electromagnetic energy, improve the electromagnetic efficiency of magnetorheological acceptor of energy.
Referring to Fig. 5, Fig. 5 is the 3rd embodiment's of a kind of magnetorheological acceptor of energy with inefficacy-Safety performance provided by the invention structure sectional view.The magnetorheological acceptor of energy 300 of Fig. 5 has similar structure with the magnetorheological acceptor of energy 100,200 of Fig. 1, Fig. 4, difference is: in magnetorheological acceptor of energy 300, five joint permanent magnet 324A, 324B, 324C, 324D, 324E and around the home electromagnetic coil 315A, 315B, 315C, 315D, the 315E on it are wound in the groove on the inwall of outer cylinder body 302, and magnetic line of force 316A, the 316B of its generation, 316C, 316D, 316E are as shown in Figure 5. Effective shearing ring 317A, 317B, 317C, 317D, 317E, the 317F of five closed flux circuits and magnetic flow liquid 304 form between inner cylinder body 301 and outer cylinder body 302.Generally speaking, permanent magnet and electromagnetic coil quantity, comprise joint number, the number of turn and width, all can determine according to the shearing effective length of magnetorheological acceptor of energy self, the stroke size that makes full use of flux circuit, magnetorheological acceptor of energy and the length of interior outer cylinder body, for example, can be two, three, four or five or more.
The structure of the given magnetorheological acceptor of energy 300 of Fig. 5 embodiment compares to Fig. 1 and Fig. 4 embodiment's magnetorheological acceptor of energy 100 and 200, and its advantage has two.The first, on the inwall by the outer cylinder body 302 at magnetorheological acceptor of energy 300, electromagnetic coil 315 is set, the number of turn of electromagnetic coil be can reduce, and diameter and the volume of magnetorheological acceptor of energy 300 effectively reduced.Second, electromagnetic coil 315 around the home on the inwall of outer cylinder body 302, can in the time that magnetorheological acceptor of energy 300 is worked, effectively reduce because input the heat that field current produces on electromagnetic coil 315, this structure will be conducive to the heat radiation of magnetorheological acceptor of energy more.
Referring to Fig. 6, it is the 4th embodiment's of a kind of magnetorheological acceptor of energy with inefficacy-Safety performance provided by the invention structure sectional view.This magnetorheological acceptor of energy 400 from different shown in Fig. 5 is, it is two rod form structures, two go out piston 403 both ends of the surface of rod-type main piston rod 408 and auxiliary piston rod 414 are set respectively, so just can omit compensation air bag and floating piston structure in inner cylinder body.This structure can reduce effectively by increasing auxiliary piston rod 414 complexity of magnetorheological acceptor of energy 300.Auxiliary piston rod 414 can be easy to realize, and this structure also can be placed in the structure as shown in accompanying drawing 1 and 4.
The embodiment of Fig. 1 and Fig. 4, Fig. 5 and Fig. 6, realize the inefficacy-Safety performance of magnetorheological acceptor of energy by increase permanent magnet on magnetorheological acceptor of energy, and on the basis of structure that changes traditional magnetorheological acceptor of energy, optimize the controllable damping force performance of magnetorheological acceptor of energy, in realizing the half active actuators performance requirement that high speed impact uses, met low speed vibration control requirement.It is with respect to traditional magnetorheological acceptor of energy, in the outside dimensions that does not increase magnetorheological acceptor of energy, under the prerequisite of field current and magnetorheological acceptor of energy energy consumption, effectively increase the shearing area of liquid flowing resistance passage, reduce the viscous damping force of magnetorheological acceptor of energy under high-speed energisation condition, there is larger controllable damping force at less field current as the used time, make controllable damping ratio and the controlled range of above-described embodiment wider, and there is effective bidirectional damper mechanical property and inefficacy-Safety performance and diamagnetic rheology liquid precipitate performance, it is high that this acceptor of energy has efficiency, simple in structure, manufacture the advantages such as local.
The structure of the magnetorheological acceptor of energy that above-described embodiment forms has four special advantages.First, the function integrated technology of inefficacy-Safety performance is realized.Specifically, permanent magnet is set in or beyond electromagnetic coil, make magnetorheological acceptor of energy there is the bidirectional damper mechanics controllability that lost efficacy-safe condition is baseline, in the time of half active control system inefficacy or control system power failure, can, for system provides reliable mechanics demand, can not cause system crash situation.Secondly, made up the precipitation defects of magnetic flow liquid from structural design angle.By the setting of permanent magnet, Main Function composition in magnetic flow liquid is attached on the closed flux circuit of permanent magnet generation, magnetic flow liquid no longer causes precipitating on a large scale so that losing efficacy owing to being subject to the impact of gravity.The 3rd, controllable damping force performance obtains optimal processing.Because the stroke of piston of this magnetorheological acceptor of energy is decoupling zero with shearing the effectively length of ring, therefore its controllable damping force performance, comprise dynamic antivibration ratio and controllable damping force scope, can realize by increasing the number of turn, width or the joint number of electromagnetic coil maximization and the optimal settings of damping force.Finally, because this magnetorheological acceptor of energy is provided with inside and outside twin-rotor housing, abandon electromagnetic coil-piston mode, thereby made magnetorheological acceptor of energy can utilize to greatest extent the length of cylinder body, maximized the piston movement stroke of magnetorheological acceptor of energy.Moreover, the structure of the magnetorheological acceptor of energy that the present invention forms is simpler with respect to traditional magnetorheological acceptor of energy structure, utilize the end cap at magnetorheological acceptor of energy two ends directly the interior outer cylinder body of magnetorheological acceptor of energy to be sealed with fastening, these members and Placement, guarantee the separate closely connection mutually again of the each part of magnetorheological acceptor of energy, such reliable in structure, is applicable to batch production, and cost is low.
In the parts of the magnetorheological acceptor of energy of above-described embodiment, there is certain requirement for the selection of material, as piston rod, the connection end cap at piston head and two ends should limited selection non-magnet material, and interior outer cylinder body is preferably high permeability material, concentrate as far as possible in the main flux loop distributing through annular magnetic rheology liquid chunnel to guarantee the magnetic line of force in field circuit, give full play to the effect of vertical magnetic field to magnetic flow liquid, effectively control the damping force of magnetorheological acceptor of energy, improve the working efficiency of magnetorheological acceptor of energy, reduce the energy consumption of magnetorheological acceptor of energy.
Finally explanation is, 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 modify or be equal to replacement technological scheme of the present invention, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (7)
1. there is the magnetorheological acceptor of energy of inefficacy-Safety performance, it is characterized in that: the tube-in-tube structure that is formed closed at both ends by inner cylinder body and outer cylinder body, in described inner cylinder body, be provided with the piston that can slide along the inwall of described inner cylinder body, take the hollow cavity of described inner cylinder body as inner chamber body, between described inner cylinder body and outer cylinder body, be formed with annular outer-cavity body, described inner chamber body is divided into front cavity and rear chamber by piston, in described front cavity and rear chamber, lay respectively on the rear and front end sidewall of described inner cylinder body and be provided with liquid flow hole, so that described inner chamber body and outer chamber are connected by liquid flow hole, magnetic flow liquid is filled in described inner chamber body and outer chamber, on the outer side wall of described inner cylinder body and/or the madial wall of described outer cylinder body, be provided with annular groove, electromagnetic coil and permanent magnet are set in described annular groove, described electromagnetic coil and the permanent magnet form with inside and outside intussusception in same annular groove arranges in pairs or arranges respectively in different annular grooves, described electromagnetic coil and permanent magnet are at least respectively one, the magnetic field producing with described permanent magnet and electromagnetic coil through the shearing of inner cylinder body, groove both sides effectively ring, outer chamber and outer cylinder body form closed flux circuit, be in magnetic line of force opposite direction between closed flux circuit adjacent in described sleeve axis direction, described inner cylinder body, outer cylinder body and shearing effectively ring are take permeability magnetic material as material.
2. the magnetorheological acceptor of energy with inefficacy-Safety performance according to claim 1, it is characterized in that: described permanent magnet, electromagnetic coil, inner cylinder body and outer cylinder body arrange for coaxial, and the permanent magnet and the electromagnetic coil that are in same annular groove can be exchanged inside and outside mounting point.
3. the magnetorheological acceptor of energy with inefficacy-Safety performance according to claim 1, it is characterized in that: fixing seal is located by end cap respectively in the two ends of described inner cylinder body and outer cylinder body, described piston be have main piston rod and auxiliary piston rod two go out rod piston, described main piston rod and auxiliary piston rod stretch out respectively in the end cap of corresponding one end.
4. the magnetorheological acceptor of energy with inefficacy-Safety performance according to claim 1, it is characterized in that: fixing seal is located by end cap respectively in the two ends of described inner cylinder body and outer cylinder body, described piston be there is single-ended piston rod singly go out rod piston, described piston rod at one end stretches out in end cap, is provided with compensation air bag on the other end end cap.
5. according to the magnetorheological acceptor of energy with inefficacy-Safety performance described in claim 3 or 4, it is characterized in that: the end cap at described two ends is take non-magnetic material as material.
6. the magnetorheological acceptor of energy with inefficacy-Safety performance according to claim 1, is characterized in that: described liquid flow hole edge on the sidewall of inner cylinder body has been arranged circumferentially some.
7. the magnetorheological acceptor of energy with inefficacy-Safety performance according to claim 1, is characterized in that the joint number that described groove and described shearing effectively encircle is at least a joint, and its extreme length depends on interior outer cylinder body length.
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| CN105508494A (en) * | 2015-12-30 | 2016-04-20 | 中国海洋大学 | Anti-impact magnetorheological damper |
| CN106153717A (en) * | 2016-08-31 | 2016-11-23 | 南京佳业检测工程有限公司 | Magnetic powder inspection magnetic flaw detection ink spray equipment |
| CN107654562A (en) * | 2017-11-13 | 2018-02-02 | 武汉理工大学 | A kind of magnetic rheological liquid damper for increasing resistance function with dead electricity |
| CN107725663A (en) * | 2017-10-24 | 2018-02-23 | 东北大学 | A kind of antisolvent precipitation magnetic rheological liquid damper |
| CN108131420A (en) * | 2017-12-25 | 2018-06-08 | 重庆大学 | A kind of buffer unit for having effective energy-absorbing characteristic |
| CN108394446A (en) * | 2018-03-05 | 2018-08-14 | 宝鸡文理学院 | Shock reducing type instrument handling device |
| CN108426369A (en) * | 2018-03-28 | 2018-08-21 | 重庆工程职业技术学院 | Air energy thermal water system for building |
| CN108443234A (en) * | 2018-04-22 | 2018-08-24 | 唐静 | Wind turbine rubber seat |
| CN108518444A (en) * | 2018-03-22 | 2018-09-11 | 杭州电子科技大学 | Permanent magnet and the hybrid MR damper of magnet exciting coil and its damping adjusting method |
| CN108528961A (en) * | 2018-04-10 | 2018-09-14 | 唐静 | Fragile article handling device |
| CN108547781A (en) * | 2018-04-22 | 2018-09-18 | 唐静 | Vibration isolation type wind turbine |
| CN108560699A (en) * | 2018-04-28 | 2018-09-21 | 重庆工程职业技术学院 | Noise reducing type builds house equipment balcony |
| CN108584152A (en) * | 2018-04-10 | 2018-09-28 | 重庆医药高等专科学校 | Accurate medical instrument movement system based on magnetic rheology effect |
| CN108759505A (en) * | 2018-04-27 | 2018-11-06 | 重庆工程职业技术学院 | Vibrating isolation system used for cooling tower |
| CN110094450A (en) * | 2019-05-05 | 2019-08-06 | 重庆交通大学 | A kind of hybrid magnetorheological collision bumper |
| CN112984031A (en) * | 2021-03-03 | 2021-06-18 | 重庆大学 | Magnetorheological fluid damper based on rotating magnetic field |
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| CN105156552A (en) * | 2015-08-17 | 2015-12-16 | 安徽工程大学 | Shock absorber capable of recycling vibration energy |
| CN105156552B (en) * | 2015-08-17 | 2017-09-12 | 安徽工程大学 | It is a kind of to reclaim the shock absorber of vibrational energy |
| CN105508494A (en) * | 2015-12-30 | 2016-04-20 | 中国海洋大学 | Anti-impact magnetorheological damper |
| CN106153717A (en) * | 2016-08-31 | 2016-11-23 | 南京佳业检测工程有限公司 | Magnetic powder inspection magnetic flaw detection ink spray equipment |
| CN107725663A (en) * | 2017-10-24 | 2018-02-23 | 东北大学 | A kind of antisolvent precipitation magnetic rheological liquid damper |
| CN107725663B (en) * | 2017-10-24 | 2019-06-18 | 东北大学 | A kind of antisolvent precipitation magnetic rheological liquid damper |
| CN107654562A (en) * | 2017-11-13 | 2018-02-02 | 武汉理工大学 | A kind of magnetic rheological liquid damper for increasing resistance function with dead electricity |
| CN108131420A (en) * | 2017-12-25 | 2018-06-08 | 重庆大学 | A kind of buffer unit for having effective energy-absorbing characteristic |
| CN108394446A (en) * | 2018-03-05 | 2018-08-14 | 宝鸡文理学院 | Shock reducing type instrument handling device |
| CN108518444A (en) * | 2018-03-22 | 2018-09-11 | 杭州电子科技大学 | Permanent magnet and the hybrid MR damper of magnet exciting coil and its damping adjusting method |
| CN108426369A (en) * | 2018-03-28 | 2018-08-21 | 重庆工程职业技术学院 | Air energy thermal water system for building |
| CN108528961A (en) * | 2018-04-10 | 2018-09-14 | 唐静 | Fragile article handling device |
| CN108584152A (en) * | 2018-04-10 | 2018-09-28 | 重庆医药高等专科学校 | Accurate medical instrument movement system based on magnetic rheology effect |
| CN108443234A (en) * | 2018-04-22 | 2018-08-24 | 唐静 | Wind turbine rubber seat |
| CN108547781A (en) * | 2018-04-22 | 2018-09-18 | 唐静 | Vibration isolation type wind turbine |
| CN108443234B (en) * | 2018-04-22 | 2020-03-31 | 深圳市雄裕橡胶五金制品有限公司 | Rubber supporting seat for fan |
| CN108759505A (en) * | 2018-04-27 | 2018-11-06 | 重庆工程职业技术学院 | Vibrating isolation system used for cooling tower |
| CN108560699A (en) * | 2018-04-28 | 2018-09-21 | 重庆工程职业技术学院 | Noise reducing type builds house equipment balcony |
| CN108560699B (en) * | 2018-04-28 | 2019-11-15 | 重庆工程职业技术学院 | Noise reducing type builds house equipment balcony |
| CN110094450A (en) * | 2019-05-05 | 2019-08-06 | 重庆交通大学 | A kind of hybrid magnetorheological collision bumper |
| CN112984031A (en) * | 2021-03-03 | 2021-06-18 | 重庆大学 | Magnetorheological fluid damper based on rotating magnetic field |
| CN112984031B (en) * | 2021-03-03 | 2022-04-19 | 重庆大学 | Magnetorheological fluid damper based on rotating magnetic field |
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Application publication date: 20140618 |