CN105178467B - Wide-range-adjustable magnetic-sensitive rubber support of coextrusion-shear modes - Google Patents
Wide-range-adjustable magnetic-sensitive rubber support of coextrusion-shear modes Download PDFInfo
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- CN105178467B CN105178467B CN201510541368.3A CN201510541368A CN105178467B CN 105178467 B CN105178467 B CN 105178467B CN 201510541368 A CN201510541368 A CN 201510541368A CN 105178467 B CN105178467 B CN 105178467B
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Abstract
The invention relates to a wide-range-adjustable magnetic-sensitive rubber support of coextrusion-shear modes. The support comprises a humanoid joint support column, an annular permanent magnet, an excitation coil, an upper base and a lower base, wherein the humanoid joint support column is formed by stacking N layers of magnetic-sensitive rubber and (N-1) layers of magnetic-conductive steel plates; the side surface of the humanoid joint support column is fan-shaped; the two ends of the humanoid joint support column are respectively connected with the side surfaces of lower base support columns and the upper base; four support columns are arranged around the lower base; a magnetic-conductive steel column is arranged in the center of the lower base; the annular permanent magnet and the excitation coil are wound on the magnetic-conductive steel column and positioned between the lower base and the magnetic-conductive steel column, and the permanent magnet is placed above the excitation coil; a magnetic field variation range is expanded by using excitation, in different directions, generated by currents in different directions; and cylindrical magnetic-sensitive rubber is arranged between the upper base and the magnetic-conductive steel column of the lower base. According to the invention, the humanoid joint design is adopted, so that the flexibility of the support is enhanced, the support can be applied to two working modes of vertical extrusion and transverse shearing, and rigidity and damping parameters of the magnetic-sensitive rubber support are adjustable in a wide range. The hollow design is adopted, so that the problem of heat dissipation of the excitation coil in working is solved and the safety of a supported structure is ensured.
Description
Technical field
The invention belongs to build, bridge, track vibration isolation technique field, be related to it is a kind of mixing extruding-shear mode big model
Enclose adjustable magnetosensitive rubber support.
Background technology
The huge energy of impact shock is often discharged in the form of ripple so that object produces and acutely rocks and cause which
Structure is damaged, or even causes grave danger to the people's lives and property, so the design of vibration insolation means is extremely necessary.Its
In, building, bridge, the vibration insolation means of track are usually located between basis and superstructure, and typically using shock isolating pedestal, which is main
Three classes are put in flexible bearing, lead core rubber support, sliding friction.Most common of which is lamination-type lead core rubber support, and it has
There are stable performance, acid resistance, water-tolerant, and application is relatively early, vibration isolating effect is good, have more ripe technology.But
This few class bearing is all passive bearing, although have good anti-vibration performance under general oscillating load, when bearing high intensity
During impact, but can not intelligence regulation stiffness by itself resisting impact failure, itself damping can not be changed come the impact energy that dissipates
Amount, this not only results in the destruction of bearing self structure, can also bring great potential safety hazard to supported objects.
Magnetorheological materials are that a class has the reversible intellectual material of fast response characteristic and performance, and it mainly has magnetorheological
Liquid, magneto-rheological grease, three class of magnetosensitive rubber, its mechanical characteristic can change with the change of externally-applied magnetic field.Magnetic flow liquid is by magnetisable
Solid particle, carrier fluid, macromolecule mixture and surfactant mix, being capable of moment under additional the action of a magnetic field
It is changed into semi-solid from the Newtonian fluid with good fluidity, and this change is continuous, controllable, reversible such that it is able to should
Impulsive force to varying strength, consumes its energy to the full extent.But the carrier fluid during life-time service, in magnetic flow liquid
Can separate with magnetizable solid microgranule and produce deposited phenomenon, affect the performance of magnetic flow liquid.
Magnetosensitive rubber is a kind of novel intelligent material, and it is by macromolecule matrix and fills ferromagnetic of micron order therein
Grain is combined.Ferromagnetic particle is magnetized in externally-applied magnetic field and magnetic field force induced effect, so as to chain is formed on magnetic direction
Or layer structure so as to macroscopically showing the characteristic that material modulus change with outer loaded magnetic field.By propping up that magnetosensitive rubber makes
Seat compared with traditional lead core rubber support has the advantages that Stiffness/Damping while controllable, good stability, simple structure, while it
The shortcoming that need to be sealed when overcoming the magnetic flow liquid free settling of early stage again, using, becomes structure, mechanical intelligence anti-impact vibration damping field
The new focus of research, among starting to be applied to bearing.
Magnetosensitive rubber support typically adopts the mode of impressed current to provide magnetic field for bearing, can only unidirectionally adjust, that is, increase
The rigidity of bearing or damping.Common magnetosensitive rubber support, due to being limited by wire parameter and bearing size, causes which adjustable
Scope is less；As magnet exciting coil is normally at the closing space inside bearing, operationally because electrical power is converted to heat energy meeting
Amount of heat is produced, is difficult to dissipate, the magnetostrictive effect of magnetosensitive rubber can be reduced, so as to affect the anti-vibration performance of bearing；By
In being limited by magnetic circuit form and magnetic direction, the vertical or horizontal enhancing magnetic rheology effect in magnetosensitive rubber is only capable of, can only
Work in vertical extruding or lateral shear state, it is difficult to meet the buffering vibration isolation requirement under multidirectional complicated impact shock, to bearing
Itself and potential safety hazard is all brought by supporting construction.
Therefore, design a kind of adjustable on a large scale, take into full account its own heat dispersion, and while vertical extruding can be operated in
With the magnetosensitive rubber intelligence bearing of lateral shear state, have to reducing the vibratory response by supporting construction under outside load impacting
It is of great significance.
The content of the invention
In view of this, it is an object of the invention to provide a kind of magnetosensitive rubber adjustable on a large scale of mixing extruding-shear mode
Glue bearing, can be operated in vertical extruding and lateral shear both of which simultaneously, and rigidity, damping can be adjustable on a large scale, and have
Good thermal diffusivity.
To reach above-mentioned purpose, the present invention provides following technical scheme：
A kind of magnetosensitive rubber support adjustable on a large scale of mixing extruding-shear mode, including top base, magnetosensitive rubber, lead
Magnetic steel plate, permanent magnet, bottom base pillar, magnet exciting coil, bottom base, cylindrical magnetosensitive rubber, magnetic conduction steel column, apery articular branches
Post.
Magnetosensitive rubber constitutes apery joint pillar with magnetic conductive steel plate stacking, and its side is the sector with certain radian, is
The core cell of magnetosensitive rubber support.Apery joint pillar two ends are connected with bottom base pillar and top base side respectively,
When indefinite high-strength impact is born, can flexibly be shaken according to Impact direction.Have one cylindrical between top base and magnetic conduction steel column
Magnetosensitive rubber, collectively forms closure magnetic conductive loop with upper bottom base, apery joint pillar, magnetic conduction steel column, provides for magnetosensitive rubber
Magnetic field；Magnet exciting coil and annular permanent magnet are around on magnetic conduction steel column, and are located between magnetic conduction steel column and bottom base pillar, when which
When in running order, larger magnetic field can be provided for magnetosensitive rubber support so that support stiffness, damping can Intelligent adjustment,
To improve buffering anti-vibration performance.
Apery joint pillar is located between upper bottom base, is laminated by magnetosensitive rubber and magnetic conductive steel plate, and which adopts
The gluing companies of Loctite, can keep the firm state of pillar, under high intensity stretching so as to ensure magnetosensitive rubber support itself
Using safety.Magnetosensitive rubber is prepared from by micron order carbonyl iron dust and soft rubber, its rectangular cross-section, hexagon or circle,
When externally-applied magnetic field changes, magnetic iron particle will be rearranged according to magnetic field intensity and direction, change the Young of magnetosensitive rubber
Modulus, realizes magnetosensitive rubber support rigidity, the quick regulation of damping, improves structural strength and impact resistance.
Apery joint pillar is laminated with N-1 layer magnetic conductive steel plates by N shell magnetosensitive rubber, and its side is have certain radian
Sector, Post sections can be rectangle, hexagon, circle.As apery joint pillar has multiple structure, when by outside big
During load impacting, the more flexible deflection of energy.Its arcuate structure makes magnetic field that magnetosensitive rubber senses in the horizontal direction and Vertical Square
It is all important upwards, so as to strengthen its horizontal and vertical magnetic rheology effect simultaneously, can operate at magnetosensitive rubber support vertical
To extruding and lateral shear two states, the use range of bearing is expanded.
Apery joint pillar has four, respectively positioned at four direction, each other at a distance of an angle of 90 degrees, forms semiclosed shape
State.There are certain distance and space between the pillar of apery joint, make whole bearing be in hollow out state.When magnet exciting coil is in work shape
During state, electrical power is converted into heat energy and can produce amount of heat, and openwork part can make rapid heat dissipation, so as to ensure magnetosensitive rubber
The structure safety of glue bearing, improves buffering anti-vibration performance.
Contain an annular permanent magnet inside bearing, be around on magnetic conduction steel column, and be located above magnet exciting coil, one is provided for bearing
Individual initial magnetic field.By applying reverse current to magnet exciting coil, the magnetic field in opposite direction with magnetic field of permanent magnet can be produced, with permanent magnetism
The zero setting of bearing magnetic field is made after the magnetic field superposition that body is produced；By applying forward current to magnet exciting coil, can produce and permanent magnet magnetic
Field direction identical magnetic field, greatly improves magnetic field intensity after being superimposed with magnetic field of permanent magnet.Thus the rigidity of magnetosensitive rubber support,
Damping is adjustable on a large scale, to adapt to indefinite high-strength impact.
Upper bottom base, apery joint pillar, magnetic conduction steel column, circular magnetosensitive rubber constitute closure magnetic conductive loop, upper bottom base
Can be rectangle, circle, octagon, user can be according to different occasion selection different shapes.
Magnet exciting coil is located at apery joint post inboard with annular permanent magnet, and is around in the magnetic conduction steel column at bottom base center
On.Upper bottom base and magnetic conduction steel column are solid, and its material is the higher mild steel of permeability, can for magnetosensitive rubber provide compared with
Big magnetic flux.A thin layer cylinder magnetosensitive rubber is filled between top base and magnetic conduction steel column.
The beneficial effects of the present invention is：The present invention combines a kind of apery of bionic design using magnetosensitive elastomeric material and closes
Section pillar, when being impacted by external load, the deflection that the pillar can be more flexible can be prevented effectively from bearing itself and be destroyed.And
Apery joint pillar side is arc-shaped, the structure make magnetic induction line at pillar have horizontally and vertically go up point
Amount, so as to, under the action of a magnetic field, the horizontal and vertical magnetic rheology effect of magnetosensitive rubber is all relatively strong, enables magnetosensitive rubber support to work
In vertical extruding and lateral shear two states, the use range of bearing is increased, adapt to the working environment of complexity.Additionally,
The present invention is designed using hollow out, increases area of dissipation.When magnet exciting coil is in running order, the heat of generation is easier to disappear
Dissipate, it is ensured that the self structure safety of bearing.
Description of the drawings
In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, the present invention provides drawings described below and carries out
Explanation：
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the profile of the present invention；
Wherein：1 is top base, 2 is magnetosensitive rubber, 3 is magnetic conductive steel plate, 4 is permanent magnet, 5 is bottom base pillar, 6 is to encourage
Magnetic coil, 7 be bottom base, 8 be magnetic conduction steel column, 10 be apery joint pillar for cylindrical magnetosensitive rubber, 9.
Specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Fig. 1 is the structural representation of the present invention, as illustrated, the big model for mixing extruding-shear mode that the present invention is provided
Enclose adjustable magnetosensitive rubber support, including top base 1, magnetosensitive rubber 2, magnetic conductive steel plate 3, permanent magnet 4, bottom base pillar 5, excitation
Coil 6, bottom base 7, cylindrical magnetosensitive rubber 8, magnetic conduction steel column 9, apery joint pillar 10.The magnetosensitive rubber 2
Apery joint pillar 10 is constituted with the stacking of magnetic conductive steel plate 3.Pillar 10 side in apery joint is the sector with certain radian, is magnetic
The core cell of quick rubber support, its two ends are connected with the side of bottom base pillar 5 and top base 1 respectively, when magnetosensitive rubber
When glue bearing bears indefinite high-strength impact, can flexibly be shaken according to Impact direction.Have between top base 1 and magnetic conduction steel column 3
One cylindrical magnetosensitive rubber 8, together with top base 1, bottom base pillar 5, bottom base 7, magnetic conduction steel column 9, apery joint pillar 10
Constitute closure magnetic conductive loop.Magnet exciting coil 6 and annular permanent magnet 4 are around on magnetic conduction steel column 9, and positioned at magnetic conduction steel column 9 with
Between susceptor posts 5.When magnet exciting coil 6 is in running order, larger magnetic field can be provided for magnetosensitive rubber support, so that
Seat rigidity, damping can Intelligent adjustment, to improve buffering anti-vibration performance.
As shown in figure 1, described apery joint pillar 10 is located between upper bottom base, by magnetosensitive rubber 2 and magnetic conductive steel plate 3
It is laminated, and adopts the gluing companies of Loctite.When structure meets with indefinite high-strength impact (such as earthquake, blast), can be very big
Situations such as preventing apery joint pillar from fracture occurring, keeps its stationary state, so as to ensure the magnetosensitive rubber support use of itself
Safety.Magnetosensitive rubber 2 is prepared from by micron order carbonyl iron dust and soft rubber, its rectangular cross-section, hexagon or circle.When outer
Plus during the change of magnetic field, the magnetic iron particle micro-arrangement in magnetosensitive rubber 2 also will change with magnetic field intensity and direction, so as to change
Become the Young's moduluss of magnetosensitive rubber, realize magnetosensitive rubber support Automatic adjusument rigidity and damp, the natural frequency of change structure,
Improve structural strength and anti-impact force.
Fig. 2 is the profile of the present invention, and apery joint pillar 10 is laminated with N-1 layers magnetic conductive steel plate 3 by N shell magnetosensitive rubber 2
Form, its side is the sector of the radian for having certain.Pillar 10 section in apery joint can be rectangle, hexagon, circle.Due to imitative
10 pillar of person joint has multiple structure, when being impacted by external load, the more flexible deflection of energy.When magnet exciting coil 6 is in
During working condition, the magnetic field that magnetosensitive rubber 2 is sensed at apery joint pillar 10 can Orthogonal Decomposition be horizontal direction and vertical
The magnetic induction component in direction, from regardless of whether when bearing bears load vertical impact or lateral shear, magnetosensitive rubber 2 can be sent out
Its good magnetic rheology effect is waved, this causes magnetosensitive rubber support to can adapt to the working environment of complexity.
Apery joint pillar 10 has four, respectively positioned at four direction, and each other at a distance of an angle of 90 degrees, is formed semiclosed
State.There are certain distance and space between apery joint pillar 10, make whole bearing be in hollow out state.When magnet exciting coil 6 works
When (especially oepration at full load), electrical power is converted into heat energy and can produce amount of heat by bearing in hot operation state.
Under long-time high temperature, magnetosensitive rubber 2 may be softened so as to reduce due anti-vibration performance.The openwork part of the design can be quick
The heat that dissipation magnet exciting coil 6 is produced, so as to ensure the structure safety and buffering anti-vibration performance of magnetosensitive rubber support.
Contain an annular permanent magnet 4 inside bearing, be around on magnetic conduction steel column 9, and be located above magnet exciting coil 6, be that bearing is carried
For an initial magnetic field.By applying reverse current to magnet exciting coil 6, the magnetic field contrary with 4 magnetic direction of permanent magnet can be produced,
The zero setting of bearing magnetic field is made after the magnetic field superposition produced with permanent magnet 4；By to magnet exciting coil 6 apply forward current, can produce with
Greatly improve magnetic field intensity behind 4 magnetic direction identical magnetic field of permanent magnet, with 4 magnetic field superposition of permanent magnet.Thus magnetosensitive rubber
The rigidity of bearing, damp it is adjustable on a large scale, to adapt to indefinite high-strength impact.
Top base 1, bottom base pillar 5, bottom base 7, circular magnetosensitive rubber 8, magnetic conduction steel column 9, apery joint pillar 10 1
Rise and constitute closure magnetic conductive loop.Top base 1, bottom base 5 can be rectangle, circle, octagon, and user can be according to different fields
Close and select different shape.
Magnet exciting coil 6 is located on the inside of apery joint pillar 10 with annular permanent magnet 4, and is around in the magnetic conduction at 7 center of bottom base
On steel column 9.Top base 1, bottom base 5 and magnetic conduction steel column 9 are solid, and its material is the higher mild steel of permeability, can be
Magnetosensitive rubber provides larger magnetic flux so as to good magnetic rheology effect.One is filled between top base 1 and magnetic conduction steel column 9
Thin layer cylinder magnetosensitive rubber 8.
Finally illustrate, preferred embodiment above is only unrestricted to illustrate technical scheme, although logical
Cross above preferred embodiment to be described in detail the present invention, it is to be understood by those skilled in the art that can be
Various changes are made to which in form and in details, without departing from claims of the present invention limited range..
Claims (5)
1. it is a kind of mixing extruding-shear mode magnetosensitive rubber support adjustable on a large scale, it is characterised in that：Including top base (1),
Magnetosensitive rubber (2), magnetic conductive steel plate (3), annular permanent magnet (4), bottom base pillar (5), magnet exciting coil (6), bottom base (7), circle
Cylindricality magnetosensitive rubber (8), magnetic conduction steel column (9), apery joint pillar (10)；
Magnetosensitive rubber (2) constitutes apery joint pillar (10) with magnetic conductive steel plate (3) stacking, and its side is with certain radian
Sector, pillar two ends are connected with bottom base pillar (5) and top base (1) side respectively, can basis under heavy shock loads
Impact direction flexibly shakes；Have cylindrical magnetosensitive rubber (8) between top base (1) and magnetic conduction steel column (9), with top base (1),
Bottom base (7), apery joint pillar (10), magnetic conduction steel column (9) collectively form closure magnetic conductive loop；Magnet exciting coil (6) and ring
Shape permanent magnet (4) is around on magnetic conduction steel column (9), and is located between magnetic conduction steel column (9) and bottom base pillar (5), when which is in work
When making state, larger magnetic field can be provided for bearing so that support stiffness, damping can Intelligent adjustment, to improve buffering vibration isolation
Performance.
2. it is according to claim 1 it is a kind of mixing extruding-shear mode magnetosensitive rubber support adjustable on a large scale, its feature
It is：Led with N-1 layers by N layers magnetosensitive rubber (2) between top base (1) and bottom base (7) in apery joint pillar (10)
Magnetic steel plate (3) is laminated, and adopts the gluing companies of Loctite, and the firm state of pillar can be kept under high intensity stretching；Magnetosensitive
Rubber (2) is prepared from by micron order carbonyl iron dust and soft rubber, and its cross section is rectangle, hexagon or circle, is made in magnetic field
Can be rearranged with magnetic direction with magnetic iron particle, improve the Young's moduluss of material.
3. it is according to claim 1 it is a kind of mixing extruding-shear mode magnetosensitive rubber support adjustable on a large scale, its feature
It is：The quantity in apery joint pillar (10) is four, respectively positioned at four direction, each other at a distance of an angle of 90 degrees；Apery is closed
There are certain distance and space between section pillar (10), so as to magnetosensitive rubber support is in hollow out state, magnet exciting coil (6) is made in work
There is larger area of dissipation during state, it is ensured that using for bearing is safe.
4. it is according to claim 1 it is a kind of mixing extruding-shear mode magnetosensitive rubber support adjustable on a large scale, its feature
It is：One annular permanent magnet (4) is set inside bearing, is around on magnetic conduction steel column (9), and be located above magnet exciting coil (6), be
Bearing provides an initial magnetic field；By applying reverse current to magnet exciting coil (6), can produce in opposite direction with magnetic field of permanent magnet
Magnetic field, make the zero setting of bearing magnetic field；By applying forward current to magnet exciting coil (6), can produce and permanent magnet magnetic field direction phase
With magnetic field, be superimposed with magnetic field of permanent magnet so that support stiffness, damping it is adjustable on a large scale, to adapt to indefinite high-strength impact.
5. it is according to claim 1 it is a kind of mixing extruding-shear mode magnetosensitive rubber support adjustable on a large scale, its feature
It is：Top base (1) and bottom base (7) are using rectangle, circular or octagon.
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