Magnetorheological torsional vibration damper
Technical field
The present invention relates to a kind of vibration damping equipment, relate in particular to a kind of magnetorheological torsional vibration damper.
Background technique
Magnetic flow liquid is by high magnetic permeability, the small soft magnetic particles of low magnetic hysteresis and the suspension that non-magnetic liquid mixes.The particle size distribution of this suspension magnetic flow liquid under zero magnetic field condition is mixed and disorderly, presents low viscous Newtonian fluid characteristic; But under the effect in magnetic field, but be well-regulated and arrange, produced the feature of class solid, become difficult plasticity Ben-Hur (Bingham) fluid that flows of high viscosity by the runny Newtonian fluid of little viscosity along magnetic direction chaining or chain pencil.Because the rheology of magnetic flow liquid under the action of a magnetic field be moment, reversible, and the shear yield strength after its rheology and magnetic intensity have stable corresponding relation.Therefore, can reach the purpose of the shear yield strength of control magnetic flow liquid by the size of controlling magnetic field intensity, thereby the moving element that is in the magnetic flow liquid is produced variable control moment, realize initiatively in good time, reversible continuous Torque Control.
Summary of the invention
Purpose of the present invention, exactly for provide a kind of can be in real time, the magnetorheological torsional vibration damper of the torsional vibration of highi degree of accuracy, continuous, reversible, low energy consumption ground control load equipment.
In order to achieve the above object, the present invention has adopted following technological scheme: a kind of magnetorheological torsional vibration damper, be connected between power equipment and the load equipment, and comprise magnetorheological torsional vibration damper, angular-rate sensor and ECU (Electrical Control Unit); One end of magnetorheological torsional vibration damper links to each other with the power equipment transmission, and the other end links to each other with the angular-rate sensor transmission by coupling, and angular-rate sensor also links to each other with the load equipment transmission by coupling, and ECU (Electrical Control Unit) is connected on the angular-rate sensor;
Described magnetorheological torsional vibration damper comprises rotor, stator and magnetic flow liquid, and the rotor activity is inlaid in the stator and also and between the stator is provided with the gap, and magnetic flow liquid is full of the gap between rotor and the stator, is wound with the energising field coil on stator.
Described rotor comprises rotating shaft and the even a plurality of disks that are connected at interval in the rotating shaft, and each disk tilts to intersect with horizontal plane respectively and is parallel to each other, and an end of rotor links to each other with the power equipment transmission, and the other end links to each other with the angular-rate sensor transmission by coupling; Described stator comprises cylindrical shell and evenly is connected a plurality of annulus of cylinder inboard wall at interval that each annulus has the angle of inclination identical with epitrochanterian each disk and is provided with at interval with epitrochanterian each disk is staggered.
The angle of inclination of each annulus on described epitrochanterian each disk and the stator is 5 degree, and the disk number is Duoed one than the annulus number on the stator on the rotor.
Each annulus on described epitrochanterian each disk and the stator is respectively along the through hole that circumferentially is provided with a plurality of axial perforations in different radius.
Be provided with a ring cavity in the cylindrical shell of described stator, and the passage that is provided with a plurality of inclinations is communicated with ring cavity with stator and gap between rotor.
Magnetorheological torsional vibration damper of the present invention is used to control the torsional vibration of the mechanism of doing rotation motion, can realize in real time, highi degree of accuracy, initiatively continuous, reversible, low energy consumption ground its torsional vibration of control.It adopts intellectual material to realize the control of damping torque, and the control magnetic circuit is arranged simple, and the big I of control moment is selected as required.Having solved traditional torsional vibration damper damping torque can not be in real time, highi degree of accuracy, the defective of continuous control initiatively.
Mechanical structure of the present invention is simple, and control system is easy to integrated, applied range, and temperature influence is less, and low cost of manufacture easily is automated.
Description of drawings
Fig. 1 is the structural representation of the magnetorheological torsional vibration damper of the present invention.
Embodiment
Referring to Fig. 1, magnetorheological torsional vibration damper of the present invention is connected between power equipment (not shown come out) and the load equipment 1, comprises magnetorheological torsional vibration damper 2, angular-rate sensor 3 and ECU (Electrical Control Unit) 4.Magnetorheological torsional vibration damper 2 comprises rotor 21, stator 22 and magnetic flow liquid 23, rotor 21 activities are inlaid in the stator 22 and also and between the stator are provided with the gap, magnetic flow liquid 23 is full of the gap between rotor and the stator, is wound with energising field coil 24 on stator 22.Rotor 21 comprises rotating shaft 211 and the even a plurality of disks 212 that are connected at interval in the rotating shaft, each disk 212 tilts to intersect with horizontal plane respectively and is parallel to each other, one end of rotor links to each other with the power equipment transmission, and the other end links to each other with angular-rate sensor 3 transmissions by coupling 51; Stator 22 comprises cylindrical shell 221 and evenly is connected a plurality of annulus 222 of cylinder inboard wall at interval that each annulus has the angle of inclination identical with epitrochanterian each disk and is provided with at interval with epitrochanterian each disk is staggered.Angular-rate sensor 3 also links to each other with load equipment 1 transmission by coupling 52, and ECU (Electrical Control Unit) 4 is connected on the angular-rate sensor 3.
Epitrochanterian each disk 212 among the present invention and the angle of inclination of each annulus 222 on the stator are 5 degree, and epitrochanterian disk number is Duoed one than the annulus number on the stator.
Each annulus 222 on epitrochanterian each disk 212 among the present invention and the stator is respectively along the through hole 2121 and 2221 that circumferentially is provided with a plurality of axial perforations in different radius.
Be provided with a ring cavity 2211 in the cylindrical shell 221 of the stator 22 among the present invention, and the passage 2212 that is provided with a plurality of inclinations is communicated with ring cavity with stator and gap between rotor.
Shown in the figure, 6 is bearing, and 7 is the magnetic line of force.
Working principle of the present invention is, twining hot-wire coil as field coil in the cylindrical shell of stator, the magnetic line of force that field coil produces in the inside of stator along the center steering axle, by annulus and disk and gap, perpendicular to disk and annulus radially, form even magnetic circuit.The magnetic field that field coil energising back produces is by the gap between annulus and the disk, make the magnetic-particle in the magnetic flow liquid of gap location radially be arranged in " chain ", when rotor sways, the direction of its linear velocity radially is arranged in the direction of " chain " with magnetic-particle vertical, " chain " in the magnetic flow liquid sheared, and the shear yield strength of magnetic flow liquid and magnetic induction intensity have corresponding relation, the size of magnetic induction intensity then can be determined to the electric current in the ECU (Electrical Control Unit) control field coil by the information transmission of angular-rate sensor collection, so just can reach the purpose of the shear yield strength of control magnetic flow liquid by the size of electric current in the control coil, thereby make magnetic flow liquid produce variable control moment, realize in good time rotor, reversible continuous Torque Control.
The present invention along circumferentially being provided with through hole in different radius, is provided with a ring cavity respectively in the cylindrical shell of stator on each annulus of each disk of rotor and stator, and the passage that is provided with a plurality of inclinations is communicated with ring cavity with stator and gap between rotor.During rotor rotation,, back and forth flow along the passage in the stator more afterwards owing to have angle that magnetic flow liquid is radially flowed with substantially horizontal.