CN109027088A - A kind of mixed shock absorber based on Stewart structure - Google Patents
A kind of mixed shock absorber based on Stewart structure Download PDFInfo
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- CN109027088A CN109027088A CN201811101199.1A CN201811101199A CN109027088A CN 109027088 A CN109027088 A CN 109027088A CN 201811101199 A CN201811101199 A CN 201811101199A CN 109027088 A CN109027088 A CN 109027088A
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- diaphragm spring
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- permanent magnet
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- rod piece
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F6/00—Magnetic springs; Fluid magnetic springs, i.e. magnetic spring combined with a fluid
- F16F6/005—Magnetic springs; Fluid magnetic springs, i.e. magnetic spring combined with a fluid using permanent magnets only
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a kind of mixed shock absorbers based on Stewart structure, including upper plate, lower plate and circumferentially it is obliquely installed six damper units between upper plate and lower plate, the upper end of damper unit passes through spherical plain bearing rod end on one and connect with upper plate, and the lower end of damper unit is connect by spherical plain bearing rod end once with lower plate；Two neighboring damper unit is symmetrical, and the angle between angle and damper unit and lower plate between damper unit and upper plate is equal；Damper unit includes upper end cover, lower cover and sequentially connected upper diaphragm spring, Magnetic vortex damper and lower diaphragm spring from top to bottom, upper end cover and upper diaphragm spring are fixed on the upside of Magnetic vortex damper from top to bottom, and lower diaphragm spring and lower cover are fixed on the downside of Magnetic vortex damper from top to bottom.The present invention is used cooperatively using diaphragm spring and eddy current retarder, has been greatly reinforced effectiveness in vibration suppression, and whole device structure is simple, can be realized the vibration damping of six degree of freedom.
Description
Technical field
The present invention relates to mechanical vibration technology fields, more particularly to a kind of mixed type vibration damping based on Stewart structure
Device.
Background technique
Vibration is prevalent in the production of the mankind, in life, some vibrations be it is useful to the mankind, such as: vibrating screen.But it is big
Partial vibration to the mankind be it is useless even have very big harm, such as: generating noise, cause serious thing in production and living
Therefore.Requirement of some precision instrument and equipments to environment is extremely stringent, therefore it is necessary to takes vibration reducing measure.In order to eliminate these
Useless vibration, people have studied many kinds of oscillation damping methods.Wherein, some is in vibration source and by installation isolation dress between vibration isolation object
Set to achieve the effect that vibration isolation, some installs damping unit to achieve the purpose that weakening, also some be not only able to achieve vibration isolation effect but also
It is able to achieve vibration damping effect.Under normal circumstances, that had not only been able to achieve vibration isolation but also had been able to achieve the mixed shock absorber of vibration damping
Effectiveness in vibration suppression is better than the damper of single performance, therefore designs mixed shock absorber with great research significance.
Compared to friction damper, hydraulic damper etc., eddy current damping have it is non-contact, lossless, without energy supply, matter
Measure the advantages that light.Eddy current retarder is common device in many mixing dampers, and the principle of eddy current retarder is when conductor exists
When moving in magnetic field or being changed by the magnetic field of conductor, inductive loop can be generated on conductor and then generates damping force, this
A damping force can reduce vibration.
Damper more commonly used at present is mostly single-degree-of-freedom or low degree-of-freedom, is able to achieve the dress of six degree of freedom vibration damping
Set few, there are some experts and scholars to propose the mechanism of some six degree of freedoms, but they implement mostly it is relatively difficult, and
Stewart structure is widely used in many fields with the simple feature of its stability and mechanism.The damper of Stewart structure
The vibration damping of six degree of freedom may be implemented.
Summary of the invention
The object of the present invention is to provide a kind of mixed shock absorbers based on Stewart structure, to solve above-mentioned existing skill
Art there are the problem of, extend the service life of whole device, enhance effectiveness in vibration suppression.
To achieve the above object, the present invention provides following schemes:
The present invention provides a kind of mixed shock absorbers based on Stewart structure, including upper plate, lower plate and edge
Peripheral, oblique is set to six damper units between the upper plate and the lower plate, the upper end of each damper unit
It is connect by spherical plain bearing rod end on one with the upper plate, the lower end of each damper unit passes through rod end joint shaft
It holds and is connect with the lower plate；The two neighboring damper unit is symmetrical, each damper unit and the upper plate
Between angle and each damper unit and the lower plate between angle be equal；The damper unit includes upper
End cap, lower cover and sequentially connected upper diaphragm spring, Magnetic vortex damper and lower diaphragm spring from top to bottom, the upper end cover
Edge and the edge of the upper diaphragm spring be fixed on the upside of the Magnetic vortex damper, the lower diaphragm bullet from top to bottom
The edge of the edge of spring and the lower cover is fixed on the downside of the Magnetic vortex damper from top to bottom.
Preferably, the Magnetic vortex damper include copper pipe and be set in turn in inside the copper pipe from top to bottom
One permanent magnet, the first iron plate, the second permanent magnet, the second iron plate and third permanent magnet；First permanent magnet and described second is forever
Magnet is mutually exclusive, and second permanent magnet and the third permanent magnet are mutually exclusive, first permanent magnet, first iron
Piece, second permanent magnet, second iron plate and the third permanent magnet can jointly in the copper pipe axially movable.
Preferably, the upper end of the damper unit is connect by upper lever with the upper spherical plain bearing rod end, the lower end
Lid connect by lower rod piece with the lower spherical plain bearing rod end, each upper spherical plain bearing rod end pass through one on base angle with it is described
The downside of upper plate connects, and each lower spherical plain bearing rod end is connect by base angle once with the upside of the lower plate.
Preferably, the upper lever sequentially passes through the upper end cover, upper diaphragm spring, the first permanent magnet, the first iron plate,
Two permanent magnets, the second iron plate, third permanent magnet and lower diaphragm spring, the upper lever are not contacted with the upper end cover, it is described on
Rod piece is fixedly connected with the upper diaphragm spring and the lower diaphragm spring, first permanent magnet, the first iron plate, the second permanent magnetism
Body, the second iron plate and third permanent magnet are fixed in the upper lever.
Preferably, it is respectively equipped on the upper end cover, the upper diaphragm spring, the lower diaphragm spring and the lower cover
The first through hole of coaxial arrangement, the second through-hole, third through-hole and threaded hole, it is first permanent magnet, first iron plate, described
The four-way that diameter is identical and is coaxially disposed is offered on second permanent magnet, second iron plate and the third permanent magnet respectively
Hole, fifth hole, the 6th through-hole, the 7th through-hole and the 8th through-hole；The upper lever include the first rod piece being successively threadedly coupled,
Second rod piece, third rod piece, the 4th rod piece and the 5th rod piece, first rod piece sequentially pass through the first through hole from top to bottom
With second through-hole, and first rod piece and the first through hole are contactless, and the upper end of second rod piece is located at described
The downside of upper diaphragm spring, first rod piece and second rod piece clamp the upper diaphragm spring, the third rod piece according to
It is secondary pass through the fourth hole, the fifth hole, the 6th through-hole, the 7th through-hole and the 8th through-hole, it is described
Second rod piece and the 4th rod piece clamp first permanent magnet, first iron plate, second permanent magnet, described
Second iron plate and the third permanent magnet, the 5th rod piece through the third through-hole and with the 4th rod piece clamp described in
Lower diaphragm spring, the lower rod piece are connect by the threaded hole with the lower cover.
Preferably, the upper spherical plain bearing rod end is identical with the structure of the lower spherical plain bearing rod end；The upper rod end closes
Bearings include Internal Spherical Surface connector and spherical outside surface connector, and one end of the Internal Spherical Surface connector is set to the spherical outside surface and connects
The inside of fitting one end, the Internal Spherical Surface connector can be rotated relative to the spherical outside surface connector.
Preferably, the upper base angle is identical with the structure at the lower base angle；The longitudinal section at the upper base angle is right angle trigonometry
Shape, the plane where a right-angle side at the upper base angle are connect with the upper plate, the plane where the bevel edge at the upper base angle
It is connect with the Internal Spherical Surface connector of the upper spherical plain bearing rod end, plane and institute where a right-angle side at the lower base angle
Lower plate connection is stated, the Internal Spherical Surface connector of plane and the lower spherical plain bearing rod end where the bevel edge at the lower base angle
Connection.
Preferably, between the upper plate and the upper base angle, between the upper base angle and the upper spherical plain bearing rod end,
Between the upper spherical plain bearing rod end and the damper unit, between the damper unit and the lower spherical plain bearing rod end, institute
It states between lower spherical plain bearing rod end and the lower base angle, between the lower base angle and the lower plate be to be detachably connected.
Preferably, the upper diaphragm spring is identical with the structure of the lower diaphragm spring；The edge of the upper diaphragm spring
Be evenly distributed several through-holes, the two sides up and down in the middle part of the upper diaphragm spring are equipped with boss, in second through-hole and
It is evenly distributed on the upper diaphragm spring between the through-hole and offers several irregularly-shaped holes, the irregularly-shaped hole includes mutual
The segmental arc of connection and sweeping " M " shape section, one end of the segmental arc are connected to the institute being connected with the segmental arc
State on the outside of the middle part of " M " shape section, the other end of the arc end be located at it is adjacent with the segmental arc described in " M " shape section middle part
Inside.
Preferably, the upper plate and the lower plate are evenly distributed several strip holes；The strip hole is for solid
Determine vibration source and by isolation mounting.
The present invention achieves following technical effect compared with the existing technology: the mixed shock absorber based on Stewart structure
It is made of upper diaphragm spring, Magnetic vortex damper and lower diaphragm spring, when generating vibration, upper diaphragm spring and lower diaphragm spring
The vibration isolation effect of meeting synchronous vibration, whole device is realized by upper diaphragm spring and lower diaphragm spring, due to upper diaphragm bullet
Spring and lower diaphragm spring have the characteristics that high axial rigidity, low radial rigidity, therefore whole device adapts to the vibration of larger displacement
It is dynamic, and upper diaphragm spring and lower diaphragm spring can also play guiding role, guarantee the first permanent magnet, the first iron plate, the second permanent magnetism
Body, the second iron plate and third permanent magnet can only avoid the first permanent magnet, the first iron plate, second in copper pipe axially movable
Permanent magnet, the second iron plate and third permanent magnet collide with copper pipe inner wall during the motion and cause Magnetic vortex damper
Damage, upper diaphragm spring and lower diaphragm spring also have the characteristics that repeatability is high, extend the service life of whole device；Together
When generate vibration when, the first permanent magnet, the first iron plate, the second permanent magnet, the second iron plate and third permanent magnet can occur with copper pipe
Axial relative motion, can generate vortex at this time in copper pipe, the damping force that this vortex generates can hinder the first permanent magnet, the first iron
The relative motion of piece, the second permanent magnet, the second iron plate and third permanent magnet in copper pipe, thus achieve the effect that vibration damping, in addition,
Magnetic vortex damper reinforces effectiveness in vibration suppression in a manner of consuming energy, compared to friction damper, hydraulic damper etc., vortex resistance
Buddhist nun have many advantages, such as it is non-contact, lossless, without energy supply, light weight；It follows that upper diaphragm spring, lower diaphragm spring and magnetic
Eddy current retarder together forms an entirety, and the two complements each other, and affects one another and mutually supports, indispensable, passes through two
The depth of person couples, and the common purpose for realizing mixed shock absorber vibration damping and vibration isolation of the enhancing based on Stewart structure has reached 1+
1 > 2 effect.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is that the present invention is based on the structural schematic diagrams of the mixed shock absorber of Stewart structure；
Fig. 2 is that the present invention is based on the main views of the mixed shock absorber of Stewart structure；
Fig. 3 is that the present invention is based on the top views of the mixed shock absorber of Stewart structure；
Fig. 4 is that the top view after upper plate is removed the present invention is based on the mixed shock absorber of Stewart structure；
Fig. 5 is the main view of damper unit of the present invention；
Fig. 6 is the half section structure diagram of damper unit of the present invention；
Fig. 7 is the top view of damper unit of the present invention；
Fig. 8 is the top view of upper diaphragm spring of the present invention；
Fig. 9 is the main view of upper diaphragm spring of the present invention；
Figure 10 is the main view of the upper spherical plain bearing rod end of the present invention；
Figure 11 is the half section structure diagram of the upper spherical plain bearing rod end of the present invention；
Figure 12 is the structural schematic diagram at the upper base angle of the present invention；
Figure 13 is the structural schematic diagram of upper plate of the present invention；
Wherein: 1- upper plate, 2- damper unit, 3- lower plate, base angle under 4-, spherical plain bearing rod end under 5-, the upper rod end of 6-
Oscillating bearing, the upper base angle 7-, 8- hexagon-headed bolt, 9- upper end cover, 10- upper diaphragm spring, the first permanent magnet of 11-, 12- second is forever
Magnet, 13- third permanent magnet, diaphragm spring under 14-, 15- lower cover, the first rod piece of 16-, the second rod piece of 17-, 18- copper pipe,
The first iron plate of 19-, the second iron plate of 20-, 21- third rod piece, the 4th rod piece of 22-, the 5th rod piece of 23-, rod piece under 24-, 25- are logical
Hole, 26- irregularly-shaped hole, the second through-hole of 27-, 28- boss, 29- Internal Spherical Surface connector, 30- spherical outside surface connector, 31- strip hole,
32- segmental arc, 33- " M " shape section.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art under the premise of not making the creative labor it is obtained it is all its
His embodiment, shall fall within the protection scope of the present invention.
In the description of the present invention it is to be appreciated that term " on ", "lower", " left side " and " right side " instruction orientation or position
Relationship is orientation and positional relationship based on the figure, it is only for facilitate the structurally and operationally mode of description, rather than
Indicating or imply signified part must have a particular orientation, with the operation of specific orientation, thus should not be understood as to this
The limitation of invention.
The object of the present invention is to provide a kind of mixed shock absorbers based on Stewart structure, are deposited with solving the prior art
The problem of, extend the service life of whole device, enhance effectiveness in vibration suppression.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
As shown in Fig. 1-Figure 13: present embodiments providing a kind of mixed shock absorber based on Stewart structure, including upper
Top plate 1, lower plate 3 and six damper units 2 being circumferentially obliquely installed between upper plate 1 and lower plate 3.Specifically,
As shown in Figs 1-4, the upper end of each damper unit 2 passes through spherical plain bearing rod end 6 on one and connect with upper plate 1, each vibration damping list
The lower end of member 2 is connect by spherical plain bearing rod end 5 once with lower plate 3.Two neighboring damper unit 2 symmetrically, each subtracts
The angle between angle and each damper unit 2 and lower plate 3 between vibration unit 2 and upper plate 1 is equal.Damper unit
2 include upper end cover 9, lower cover 15 and sequentially connected upper diaphragm spring 10, Magnetic vortex damper and lower diaphragm bullet from top to bottom
Spring 14, the edge of upper end cover 9 and the edge of upper diaphragm spring 10 pass through the hexagon-headed bolt of M4 × 25 8 and are fixed on magnetic whirlpool
The upside of damper, the edge of lower diaphragm spring 14 and the edge of lower cover 15 pass through the hexagon-headed bolt of M4 × 25
8 are fixed on the downside of Magnetic vortex damper.
Specifically, as shown in Figure 5-Figure 7, Magnetic vortex damper includes copper pipe 18 and is set in turn in copper pipe from top to bottom
The first permanent magnet 11, the first iron plate 19, the second permanent magnet 12, the second iron plate 20 and third permanent magnet 13 inside 18.First forever
Magnet 11 and the second permanent magnet 12 are mutually exclusive, and the second permanent magnet 12 and third permanent magnet 13 are mutually exclusive.First permanent magnet 11,
First iron plate 19, the second permanent magnet 12, the second iron plate 20 and third permanent magnet 13 can jointly in copper pipe 18 axially movable.
The upper end of damper unit 2 is connect by upper lever with upper spherical plain bearing rod end 5, and lower cover 15 is closed by lower rod piece 24 with lower rod end
Bearings 5 connect.Each upper spherical plain bearing rod end 6 passes through base angle 7 on one and connect with the downside of upper plate 1, and each lower rod end closes
Bearings 6 are connect by base angle 4 once with the upside of lower plate 3.Upper lever sequentially passes through upper end cover 9, upper diaphragm spring 10,
One permanent magnet 11, the first iron plate 19, the second permanent magnet 12, the second iron plate 20, third permanent magnet 13 and lower diaphragm spring 14, upper boom
Part is not contacted with upper end cover 9, and upper lever is fixedly connected with upper diaphragm spring 10 and lower diaphragm spring 14, the first permanent magnet 11,
One iron plate 19, the second permanent magnet 12, the second iron plate 20 and third permanent magnet 13 are fixed in upper lever.
Specifically, coaxial arrangement is respectively equipped on upper end cover 9, upper diaphragm spring 10, lower diaphragm spring 14 and lower cover 15
First through hole, the second through-hole 27, third through-hole and threaded hole.First permanent magnet 11, the first iron plate 19, the second permanent magnet 12,
Offer that diameter is identical and fourth hole, the fifth hole, the of coaxial arrangement on second iron plate 20 and third permanent magnet 13 respectively
Six through-holes, the 7th through-hole and the 8th through-hole.Upper lever includes the first rod piece 16 being successively threadedly coupled, the second rod piece 17, third
Rod piece 21, the 4th rod piece 22 and the 5th rod piece 23.First rod piece 16 sequentially passes through first through hole and the second through-hole 27 from top to bottom,
And first rod piece 16 and first through hole it is contactless.The upper end of second rod piece 17 is located at the downside of upper diaphragm spring 10, the first rod piece
16 and second rod piece 17 clamp upper diaphragm spring 10.Third rod piece 21 sequentially pass through fourth hole, fifth hole, the 6th through-hole,
7th through-hole and the 8th through-hole, the second rod piece 17 and the 4th rod piece 22 clamp the first permanent magnet 11, the first iron plate 19, the second permanent magnetism
Body 12, the second iron plate 20 and third permanent magnet 13.5th rod piece 23 clamps lower diaphragm through third through-hole and with the 4th rod piece 22
Spring 14.Lower rod piece 24 is connect by threaded hole with lower cover 15.
Upper diaphragm spring 10 is identical with the structure of lower diaphragm spring 14.Specifically, as illustrated in figs. 8-9, upper diaphragm spring
10 edge is evenly distributed four through-holes 25, for being clamped the edge of upper diaphragm spring 10 by the hexagon-headed bolt of M4 × 25
Between upper end cover 9 and copper pipe 18.The two sides up and down at the middle part of upper diaphragm spring 10 are equipped with boss 28, in order to the first rod piece
16 and second clamping of the rod piece 17 to upper diaphragm spring 10, while enhancing the bonding strength of upper diaphragm spring 10.Lower diaphragm bullet
The edge of spring 14 is evenly distributed four through-holes 25, for being pressed from both sides the edge of lower diaphragm spring 14 by the hexagon-headed bolt of M4 × 25
Tightly between lower cover 15 and copper pipe 18.The two sides up and down at the middle part of lower diaphragm spring 14 are equipped with boss 28, in order to the 4th
The clamping of rod piece 22 and the 5th rod piece 23 to lower diaphragm spring 14, while enhancing the bonding strength of lower diaphragm spring 14.?
It is evenly distributed on upper diaphragm spring 10 between two through-holes 27 and the through-hole 25 of upper diaphragm spring 10 and offers several abnormity
Hole 26, be evenly distributed on the lower diaphragm spring 14 between third through-hole and the through-hole 25 of lower diaphragm spring 14 offer it is several
The number of a irregularly-shaped hole 26, upper diaphragm spring 10 and the irregularly-shaped hole 26 on lower diaphragm spring 14 is preferably three.Irregularly-shaped hole 26 wraps
Interconnected segmental arc 32 and sweeping " M " shape section 33 are included, one end of segmental arc is connected to be connected with segmental arc 32
" M " shape section 33 middle part on the outside of, the other end of arc end 32 is located at the inside middle portion of " M " the shape section 33 adjacent with segmental arc.
Between upper plate 1 and upper base angle 4, between upper base angle 4 and upper spherical plain bearing rod end 6, upper spherical plain bearing rod end 6 with subtract
Shake between unit 2, between damper unit 2 and lower spherical plain bearing rod end 5, between lower spherical plain bearing rod end 5 and lower base angle 7, bottom
It is to be preferably detachably connected between angle 7 and lower plate 3, is more preferably connected through a screw thread.
Upper spherical plain bearing rod end 6 is identical with the structure of lower spherical plain bearing rod end 5.Specifically, as shown in figs. 10-11, on
Spherical plain bearing rod end 6 includes Internal Spherical Surface connector 29 and spherical outside surface connector 30, and one end of Internal Spherical Surface connector 29 is set to outer
The inside of 30 one end of ball joint, Internal Spherical Surface connector 29 can be rotated relative to spherical outside surface connector 30.Upper base angle 7 and bottom
The structure at angle 4 is identical.Specifically, as shown in figure 12, the longitudinal section at upper base angle 7 and lower base angle 4 is both preferably right angled triangle, more
Preferably isosceles right triangle, the plane where a right-angle side at upper base angle 7 are equipped with the threaded hole of M5 × 6, are used for and upper plate 1
Connection, the plane where the bevel edge at upper base angle 7 are equipped with the threaded hole of M5 × 12, for connecting with the Internal Spherical Surface of upper spherical plain bearing rod end 6
Fitting 29 connects.Plane where one right-angle side at lower base angle 4 is equipped with the threaded hole of M5 × 6, for connecting with lower plate 3, goes to the bottom
Plane where the bevel edge at angle 4 is equipped with the threaded hole of M5 × 12, for connecting with the Internal Spherical Surface connector 29 of lower spherical plain bearing rod end 5
It connects.Upper plate 1 connect by the hexagon socket head cap screws of M5 × 20 with upper base angle 7, lower plate 3 pass through M5 × 20 hexagon socket head cap screw and
Lower base angle 4 connects.The shape of upper plate 1 and lower plate 3 can identical can also be different, the shape of upper plate 1 and lower plate 3 is preferred
It is identical.Specifically, upper plate 1 and lower plate 3 are preferably shaped to triangle or circle or quadrangle or other polygons, on
Top plate 1 and lower plate 3 be evenly distributed several strip holes 31, strip hole 31 and upper plate 1 corresponding with strip hole 31 or
The seamed edge of lower plate 3 is parallel, and strip hole 31 is used to connect across bolt by isolation mounting with vibration source and by isolation mounting.Such as Figure 13
Shown, the shape of upper plate 1 and lower plate 3 is more preferably triangle, and each vertex of triangle is equipped with knuckle, long
The quantity in hole 31 is preferably three.
It is as follows that the mixed shock absorber based on Stewart structure in the present embodiment obtains working principle:
Assuming that vibration source is below by isolation mounting above, when giving the mixed type vibration damping based on Stewart structure in lower section
When one excitation of device generates vibration, six damper units 2 can all be responded flexible, and specifically, upper diaphragm spring 10 is under
Diaphragm spring 14 can synchronous vibration, realize vibration isolation effect, while the first permanent magnet 11, the first iron plate 19, the second permanent magnet 12, the
With copper pipe 18 axial relative motion can occur for two iron plates 20 and third permanent magnet 13, so that vortex is generated in copper pipe 18, in whirlpool
Under the action of raw damping force of miscarrying, the first permanent magnet 11, the first iron plate 19, the second permanent magnet 12, the second iron plate 20 and third
Relative motion of the permanent magnet 13 in copper pipe 18 is hindered, to achieve the effect that vibration damping, realizes the vibration damping of six-freedom degree.
The vibration isolation effect of the mixed shock absorber based on Stewart structure in the present embodiment is by 10 He of upper diaphragm spring
Lower diaphragm spring 14 is realized, since upper diaphragm spring 10 and lower diaphragm spring 14 have high axial rigidity, low radial rigidity
The characteristics of, therefore whole device adapts to the vibration of larger displacement, and upper diaphragm spring 10 and lower diaphragm spring 14 can also play
Guiding role, the first permanent magnet 11 of guarantee, the first iron plate 19, the second permanent magnet 12, the second iron plate 20 and third permanent magnet 13
The first permanent magnet 11, the first iron plate 19, the second permanent magnet 12, the second iron plate 20 can be avoided in copper pipe 18 axially movable
The damage of Magnetic vortex damper, and upper film are collided and caused during the motion with 18 inner wall of copper pipe with third permanent magnet 13
Flat spring 10 and lower diaphragm spring 14 have the characteristics that repeatability is high, extend the service life of whole device；Magnetic vortex resistance
Buddhist nun's device reinforces effectiveness in vibration suppression in a manner of consuming energy, and compared to friction damper, hydraulic damper etc., eddy current damping has non-
It contacts, is lossless, being not necessarily to the advantages that energy supply, light weight；It follows that upper diaphragm spring 10, lower diaphragm spring 14 and magnetic are vortexed
Damper together forms an entirety, is used cooperatively using upper diaphragm spring 10, lower diaphragm spring 14 and eddy current retarder, greatly
Effectiveness in vibration suppression is strengthened greatly, the two complements each other, and affects one another and mutually supports, and it is indispensable, it is coupled by the depth of the two,
It is common to realize the purpose for enhancing the vibration vibration isolation that the mixed shock absorber based on Stewart structure subtracts, achieve the effect that 1+1 > 2.
Apply that a specific example illustrates the principle and implementation of the invention in this specification, above embodiments
Explanation be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art,
According to the thought of the present invention, there will be changes in the specific implementation manner and application range.To sum up, the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (10)
1. a kind of mixed shock absorber based on Stewart structure, it is characterised in that: including upper plate, lower plate and along week
To six damper units being obliquely installed between the upper plate and the lower plate, the upper end of each damper unit is logical
It crosses spherical plain bearing rod end on one to connect with the upper plate, the lower end of each damper unit passes through spherical plain bearing rod end
It is connect with the lower plate；The two neighboring damper unit is symmetrical, each damper unit and the upper plate it
Between angle and each damper unit and the lower plate between angle be equal；The damper unit includes upper end
Lid, lower cover and sequentially connected upper diaphragm spring, Magnetic vortex damper and lower diaphragm spring from top to bottom, the upper end cover
The edge of edge and the upper diaphragm spring is fixed on the upside of the Magnetic vortex damper, the lower diaphragm spring from top to bottom
Edge and the edge of the lower cover be fixed on the downside of the Magnetic vortex damper from top to bottom.
2. the mixed shock absorber according to claim 1 based on Stewart structure, it is characterised in that: the magnetic vortex
The first permanent magnet, the first iron plate, second forever that damper includes copper pipe and is set in turn in inside the copper pipe from top to bottom
Magnet, the second iron plate and third permanent magnet；First permanent magnet and second permanent magnet are mutually exclusive, second permanent magnetism
Body and the third permanent magnet are mutually exclusive, first permanent magnet, first iron plate, second permanent magnet, described
Two iron plates and the third permanent magnet can jointly in the copper pipe axially movable.
3. the mixed shock absorber according to claim 2 based on Stewart structure, it is characterised in that: the vibration damping list
The upper end of member is connect by upper lever with the upper spherical plain bearing rod end, and the lower cover is closed by lower rod piece and the lower rod end
Bearings connection, each upper spherical plain bearing rod end passes through base angle on one and connect with the downside of the upper plate, each described
Lower spherical plain bearing rod end is connect by base angle once with the upside of the lower plate.
4. the mixed shock absorber according to claim 3 based on Stewart structure, it is characterised in that: the upper lever
Sequentially pass through the upper end cover, upper diaphragm spring, the first permanent magnet, the first iron plate, the second permanent magnet, the second iron plate, third forever
Magnet and lower diaphragm spring, the upper lever are not contacted with the upper end cover, the upper lever and the upper diaphragm spring and institute
It states lower diaphragm spring to be fixedly connected, first permanent magnet, the first iron plate, the second permanent magnet, the second iron plate and third permanent magnet
It is fixed in the upper lever.
5. the mixed shock absorber according to claim 4 based on Stewart structure, it is characterised in that: the upper end cover,
The first through hole, second logical of coaxial arrangement is respectively equipped on the upper diaphragm spring, the lower diaphragm spring and the lower cover
Hole, third through-hole and threaded hole, first permanent magnet, first iron plate, second permanent magnet, second iron plate and
Fourth hole, the fifth hole, the 6th through-hole, the 7th that diameter is identical and is coaxially disposed are offered on the third permanent magnet respectively
Through-hole and the 8th through-hole；The upper lever includes the first rod piece being successively threadedly coupled, the second rod piece, third rod piece, the 4th bar
Part and the 5th rod piece, first rod piece sequentially pass through the first through hole and second through-hole, and described from top to bottom
One rod piece and the first through hole are contactless, and the upper end of second rod piece is located at the downside of the upper diaphragm spring, and described
One rod piece and second rod piece clamp the upper diaphragm spring, and the third rod piece sequentially passes through the fourth hole, described
Fifth hole, the 6th through-hole, the 7th through-hole and the 8th through-hole, second rod piece and the 4th rod piece folder
Tight first permanent magnet, first iron plate, second permanent magnet, second iron plate and the third permanent magnetism
Body, the 5th rod piece clamp the lower diaphragm spring, the lower rod piece through the third through-hole and with the 4th rod piece
It is connect by the threaded hole with the lower cover.
6. the mixed shock absorber according to claim 3 based on Stewart structure, it is characterised in that: the upper rod end
Oscillating bearing is identical with the structure of the lower spherical plain bearing rod end；The upper spherical plain bearing rod end includes Internal Spherical Surface connector and outer
One end of ball joint, the Internal Spherical Surface connector is set to the inside of spherical outside surface connector one end, the Internal Spherical Surface
Connector can be rotated relative to the spherical outside surface connector.
7. the mixed shock absorber according to claim 6 based on Stewart structure, it is characterised in that: the upper base angle
It is identical with the structure at the lower base angle；The longitudinal section at the upper base angle is right angled triangle, a right-angle side institute at the upper base angle
Plane connect with the upper plate, the plane where the bevel edge at the upper base angle is described with the upper spherical plain bearing rod end
The connection of Internal Spherical Surface connector, the plane where a right-angle side at the lower base angle are connect with the lower plate, the lower base angle
Plane where bevel edge is connect with the Internal Spherical Surface connector of the lower spherical plain bearing rod end.
8. the mixed shock absorber according to claim 3 based on Stewart structure, it is characterised in that: the upper plate
Between the upper base angle, between the upper base angle and the upper spherical plain bearing rod end, the upper spherical plain bearing rod end with it is described
Between damper unit, between the damper unit and the lower spherical plain bearing rod end, the lower spherical plain bearing rod end and it is described under
Between base angle, between the lower base angle and the lower plate be to be detachably connected.
9. the mixed shock absorber according to claim 1 based on Stewart structure, it is characterised in that: the upper diaphragm
Spring is identical with the structure of the lower diaphragm spring；The edge of the upper diaphragm spring is evenly distributed several through-holes, described
Two sides up and down in the middle part of upper diaphragm spring are equipped with boss, the upper diaphragm bullet between second through-hole and the through-hole
It is evenly distributed on spring and offers several irregularly-shaped holes, the irregularly-shaped hole includes interconnected segmental arc and sweeping
" M " shape section, one end of the segmental arc be connected to be connected with the segmental arc described in " M " shape section middle part on the outside of, it is described
The other end of arc end be located at it is adjacent with the segmental arc described in " M " shape section inside middle portion.
10. the mixed shock absorber according to claim 1 based on Stewart structure, it is characterised in that: the upper plate
Several strip holes are evenly distributed with the lower plate；The strip hole is for fixing vibration source and by isolation mounting.
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| CN201811101199.1A CN109027088B (en) | 2018-09-20 | 2018-09-20 | A kind of mixed shock absorber based on Stewart structure |
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| CN201811101199.1A CN109027088B (en) | 2018-09-20 | 2018-09-20 | A kind of mixed shock absorber based on Stewart structure |
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| CN109630602A (en) * | 2019-01-18 | 2019-04-16 | 上海大学 | A kind of quasi- zero stiffness vibrating isolation system of electromagnetism based on Stewart platform |
| CN110365249A (en) * | 2019-07-15 | 2019-10-22 | 上海大学 | Based on the quasi- zero stiffness vibration isolation of Stewart platform and energy collecting system |
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| CN111075884A (en) * | 2020-01-09 | 2020-04-28 | 上海大学 | Shock absorber based on Stewart configuration |
| CN111609081A (en) * | 2020-06-08 | 2020-09-01 | 上海大学 | Novel vibration damper based on Stewart configuration |
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| CN113513559A (en) * | 2021-05-13 | 2021-10-19 | 上海大学 | Stewart vibration isolation platform based on MFC positive and negative piezoelectric effect |
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| CN109630602A (en) * | 2019-01-18 | 2019-04-16 | 上海大学 | A kind of quasi- zero stiffness vibrating isolation system of electromagnetism based on Stewart platform |
| CN110365249A (en) * | 2019-07-15 | 2019-10-22 | 上海大学 | Based on the quasi- zero stiffness vibration isolation of Stewart platform and energy collecting system |
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| CN110566630B (en) * | 2019-07-26 | 2021-04-23 | 北京空间飞行器总体设计部 | Load supporting device integrating vibration reduction of launching section and vibration isolation of on-track section |
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| CN110480613A (en) * | 2019-08-27 | 2019-11-22 | 上海大学 | A kind of hydraulic artificial-muscle workbench of multiple degrees of freedom |
| CN111075884A (en) * | 2020-01-09 | 2020-04-28 | 上海大学 | Shock absorber based on Stewart configuration |
| CN111609081A (en) * | 2020-06-08 | 2020-09-01 | 上海大学 | Novel vibration damper based on Stewart configuration |
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| CN111637191A (en) * | 2020-06-16 | 2020-09-08 | 上海大学 | Passive vibration isolator based on cube configuration |
| CN117100581A (en) * | 2020-08-22 | 2023-11-24 | 唐腊辉 | Low-noise small-vibration inner inclined plane hydraulic damping ultrasonic massage device |
| CN113513559A (en) * | 2021-05-13 | 2021-10-19 | 上海大学 | Stewart vibration isolation platform based on MFC positive and negative piezoelectric effect |
| CN113513559B (en) * | 2021-05-13 | 2022-11-29 | 上海大学 | Stewart vibration isolation platform based on MFC positive and negative piezoelectric effect |
| US20230045158A1 (en) * | 2021-08-04 | 2023-02-09 | Chongqing University | Magnetic Suspension Type Sensing System For Space Full-Degree-Of-Freedom Absolute Poses |
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