CN108799394A - Dynamic vibration absorber and bump leveller group's system - Google Patents

Dynamic vibration absorber and bump leveller group's system Download PDF

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Publication number
CN108799394A
CN108799394A CN201810814612.2A CN201810814612A CN108799394A CN 108799394 A CN108799394 A CN 108799394A CN 201810814612 A CN201810814612 A CN 201810814612A CN 108799394 A CN108799394 A CN 108799394A
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CN
China
Prior art keywords
mass body
dynamic vibration
vibration absorber
rigid frame
space
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Granted
Application number
CN201810814612.2A
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Chinese (zh)
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CN108799394B (en
Inventor
杨斌堂
王熙
吴浩慜
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Shanghai Jiaotong University
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Shanghai Jiaotong University
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/53Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
    • F16F9/535Magnetorheological [MR] fluid dampers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/3207Constructional features

Abstract

The present invention provides a kind of dynamic vibration absorbers, including rigid frame (100) and mass body (110), it is provided with cavity in the rigid frame (100), cavity inside space forms article containing space, the mass body (110) is mounted in article containing space, and the remaining space that mass body (110) is taken up space is removed in article containing space and forms filling space (120);Mass body (110) is connected by following any structure or entire infrastructure with rigid frame (100):Fill up the damping liquid (130) of filling space (120);The elastic component (140) of setting.The present invention also provides a kind of bump leveller group's systems comprising above-mentioned dynamic vibration absorber.The present invention can be directly installed on by cementing equal various ways in the structure such as building, bridge, railroad rails, wind turbine tower body, not influenced on original structure, easy installation and reliable.

Description

Dynamic vibration absorber and bump leveller group's system
Technical field
The present invention relates to absorbing fields, and in particular, to dynamic vibration absorber and bump leveller group's system.
Background technology
Absorbing is to reduce the measure of unwanted mechanical oscillation in all kinds of machineries.In actual operation, people usually take Only make the measure with the vibration decaying in certain frequency range of certain key position in machinery, therefore vibration cannot completely eliminate.One As vibration reducing measure have reduce incentive action, avoid resonance region, increase damping and use damper.
Patent document CN207209687U provides a kind of car floor absorber block, including upper padding plate, lower bolster, shock absorption layer, institute The upper padding plate and lower bolster stated are rectangular metallic plate, are equipped with shock absorption layer between the two, and the shock absorption layer is internally provided with through-hole, Side wall is equipped with an annular groove.It is according to the patent document readme advantage:Through-hole is internally provided with several springs, the design of spring Enhance the vibration absorption ability of absorber block;Shock absorption layer side wall be equipped with annular groove so that absorber block be pressurized when increase itself by Press space;Backing plate edge uses fillet design, improves the vibration absorption ability of absorber block, surface is carved with diamond shape lines, enhances and rub Effect is wiped, the fixation of absorber block is convenient for;Mounting hole is equipped with earthquake washer, improves the working effect of absorber block.But the patent The structure one side application surface that document provides is relatively narrow, and can not be suitable for the occasions such as building, track on the other hand only can be to upper The vibration in lower direction is effectively absorbed, and poor for the shock absorption of other dimensions.
Invention content
For the defects in the prior art, the object of the present invention is to provide a kind of dynamic vibration absorbers and bump leveller group's system.
According to dynamic vibration absorber provided by the invention, including rigid frame and mass body, it is provided in the rigid frame Cavity, cavity inside space form article containing space, and the mass body is mounted in article containing space, and mass body is removed in article containing space The remaining space to be taken up space forms filling space;
Mass body is connected by following any structure or entire infrastructure with rigid frame:
-- fill up the damping liquid in filling space;
-- the elastic component of setting.
Preferably, the damping liquid is magnetic rheological liquid;Dynamic vibration absorber also includes control magnet;
It controls magnet and is mounted on rigid frame and/or mass body.
Preferably, the control magnet includes electromagnet, and the electromagnet on rigid frame, mass body is respectively formed First electromagnet, the second electromagnet.
Preferably, multiple first electromagnets are coated on the outside of rigid frame, it is in parallel between multiple first electromagnets and/or Arranged in series.
Preferably, the mass body includes following any or various structures:
-- ferromagnet;
-- permanent magnet;
-- magnetizer;
-- non-magnetizer.
Preferably, it is fastenedly connected on mass body or integrally formed with block, multiple blocks is distributed in the peripheral surface of mass body On;
There are runner gaps, the runner gap to pass through for magnetic rheological liquid between block and rigid frame inner wall.
Preferably, it is provided with through-hole runner in mass body, is all connected between multiple through-hole runners, part is connected to or does not connect It is logical.
Preferably, mass body contains rigid bodies and embedded permanent magnet,
External permanent magnet is provided on rigid frame as control magnet.
Preferably, under control magnet effect, the magnetic-particle in magnetic rheological liquid is assembled, and composition is connected to rigidity Shaft between frame and mass body.
The present invention also provides a kind of bump leveller group system, including controlled device and above-mentioned dynamic vibration absorber, one or Multiple dynamic vibration absorbers are mounted in controlled device.
Compared with prior art, the present invention has following advantageous effect:
1, the present invention can be directly installed on such as building, bridge, railroad rails, wind turbine tower by the various ways such as cementing In the structures such as body, original structure is not influenced, it is easy installation and reliable;
2, the present invention has inhibits potentiality about one-dimensional to the sextuple direction absorption of vibrations of translation and/or rotation;
3, the present invention has adaptive ability, for the time-varying state of controlled state, dynamically track it is adjustable or it is adaptive extremely Optimal working condition;
4, the present invention can also form bump leveller group's system by way of array or combination, more effectively absorb large scale The vibration of controlled device.
5, the present invention can be accomplished in several ways the adjusting to itself damping, can not only effectively improve absorption vibration Frequency bandwidth, moreover it is possible to adapt to the use demand of complex environment.
Description of the drawings
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention, Objects and advantages will become more apparent upon:
Fig. 1 is bump leveller group's system structure diagram;
Fig. 2 is dynamic vibration absorber structural schematic diagram in basic embodiment;
Fig. 3 is structural schematic diagram when the first electromagnet is only arranged in embodiment 1;
Fig. 4 is structural schematic diagram when the second electromagnet is only arranged in embodiment 1;
Fig. 5 is structural schematic diagram when the first electromagnet and the second electromagnet is arranged in embodiment 1 simultaneously;
Fig. 6 is dynamic vibration absorber structural schematic diagram in embodiment 2;
Fig. 7 is dynamic vibration absorber structural schematic diagram in embodiment 3;
Fig. 8 is dynamic vibration absorber structural schematic diagram in first preference in embodiment 4;
Fig. 9 is dynamic vibration absorber structural schematic diagram in second preference in embodiment 4;
Figure 10 is dynamic vibration absorber structural schematic diagram in third preference in embodiment 4;
Figure 11 is dynamic vibration absorber internal structure chart on X/Y plane in rectangular coordinate system in space in embodiment 5;
Figure 12 is dynamic vibration absorber internal structure chart in YZ planes in rectangular coordinate system in space in embodiment 5;
Figure 13 is that dynamic vibration absorber absorbs twisting vibration schematic diagram.
It is shown in figure:
Specific implementation mode
With reference to specific embodiment, the present invention is described in detail.Following embodiment will be helpful to the technology of this field Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention Protection domain.
In the description of the present invention, it is to be understood that, term "upper", "lower", "front", "rear", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is orientation based on ... shown in the drawings or position Relationship is set, is merely for convenience of description of the present invention and simplification of the description, device is not indicated or implied the indicated or element is necessary With specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
As shown in Fig. 2, in basic embodiment, dynamic vibration absorber provided by the invention includes rigid frame 100 and mass body 110, cavity is provided in the rigid frame 100, cavity inside space forms article containing space, and the mass body 110 is mounted on The remaining space that mass body 110 is taken up space is removed in article containing space, in article containing space forms filling space 120;
Mass body 110 is connected by following any structure or entire infrastructure with rigid frame 100:
-- fill up the damping liquid 130 in filling space 120;
-- the elastic component 140 of setting.
In practical application, can according to the predominant oscillatory frequencies band of controlled device 240 to it is following any one or appoint multiple contents It is adjusted, the viscosity of damping liquid 130, quality size, distribution and the material of the elasticity of elastic component 140, mass body 110, To realize the adjustment to dynamic vibration absorber itself intrinsic frequency, and then realize, energy maximum corresponding with the frequency of controlled device 240 Change is transmitted on the 110 of dynamic vibration absorber, achievees the effect that decaying is not vibrated or vibrated to controlled device 240.
The preference of basic embodiment is illustrated below.
As shown in Figures 3 to 5, in embodiment 1, the damping liquid 130 is magnetic rheological liquid 150;Dynamic vibration absorber is also Including controlling magnet, in the present embodiment, control magnet is electromagnet, and the electromagnet is mounted on rigid frame 100 and/or quality On body 110;
The mass body 110 includes following any or various structures:
-- ferromagnet;
-- permanent magnet;
-- magnetizer;
-- non-magnetizer.
Electromagnet on rigid frame 100, the electromagnet on mass body 110 are respectively defined as the first electricity Magnet 160, the second electromagnet 170, Fig. 3, Fig. 4, Fig. 5, which are respectively shown, to be only arranged the first electromagnet 160, the second electromagnetism is only arranged Body 170 while the preferred structure of the first electromagnet 160 and the second electromagnet 170 in the case of these three is set.In practical application, The electromagnet can be arranged multiple, by carrying out the combination of power on/off for these electromagnets, be added with given electromagnetic field Carry, realize the adjusting of magnetic fluid damping, for example, under equivalent device volume, make magnetic rheological liquid 150 damp or magnetomechanical damping power/ Coefficient reaches maximum under same volume.Preferably, the mass body 110 is preferential to select big specific gravity material.Preferably, institute The electromagnetic coil that electromagnet can be simple is stated, can also be that electromagnetic coil adds core structure.
After electromagnet powers up magnetic attraction, the variation of magnetoelasticity and/or the variation of rigidity can be realized.Specifically, work as use Magnetic rheological liquid 150 and elastic component 140 are changed by compound elasticity, realize that damping and rigidity are controllable simultaneously;Work as mass body 110 be non-electromagnet, then only damping change;When damping liquid 130 is general fluid, such as non-magnetic rheological liquid, then only Stiffness variation.
As shown in fig. 6, in embodiment 2, it is fastenedly connected on the mass body 110 or integrally formed with block 180, multiple gears Block 180 is distributed on the peripheral surface of mass body 110, and there are runner gaps 190 between 100 inner wall of block 180 and rigid frame, should Runner gap 190 passes through for magnetic rheological liquid 150.On cross section as shown in FIG. 6, the runner gap 190 is wherein A line circle is in square-wave form, that is to say, that there are the variations of width direction size in runner gap 190.On the one hand, runner gap Relatively narrow part flow resistance increases in 190, can improve magnetic damping;On the other hand, the upper surface of block 180 can effectively hinder Keep off deposition of the magnetic-particle towards 100 lower section inner wall of rigid frame;In addition, under the action of external magnetic field, in runner gap 190 The aggregation that magnetic-particle more easily occurs constitutes the structure of shaft to solidification tendency occur, and then absorbs the corresponding dimension of twisting The vibration of degree.
As shown in fig. 7, in embodiment 3, it is provided with through-hole runner 200 in mass body 110, between multiple through-hole runners 200 All connection, part are connected to or are not connected to.Magnetic rheological liquid 150 can have resistance, Jin Ershi when being flowed in through-hole runner 200 The adjusting of existing magnetic fluid damping.
In embodiment 4, dynamic vibration absorber can be the arbitrary combination between above-mentioned each technical characteristic.As shown in figure 8, the In one preference, mass body 110 contains rigid bodies 210 and embedded permanent magnet 220, is set in 210 outside wall surface of rigid bodies It is equipped with block 180, external permanent magnet 230 is provided on rigid frame 100 as control magnet.In practical application, permanent magnetism is embedded The vibration frequency, quality and bandwidth that 220 magnetic field intensity of body and volume mass neglect greatly controlled device 240 determine.As shown in figure 9, In second preference, above-mentioned embedded permanent magnet 220, external permanent magnet 230 are substituted for the second electromagnet 170, respectively One electromagnet 160.As shown in Figure 10, in third preference, it is additionally provided with through-hole runner 200 in mass body 110, and by second The quantity of electromagnet 170 is arranged to multiple, and block 180 has also in addition been substituted for elastic component 140.To sum up, in the present embodiment, lead to Cross control adjustment elastic component 140, mass body 110, permanent magnet, electromagnet, magnetic rheological liquid 150, magnetic circuit material, through-hole runner 200, each structural material, size, quality and the ferromagnetic combination of electromagnet and permanent magnet, number, arrangement array, electric current/electromagnetic field Apply intensity etc., can actively or passively adjust and embody optimum efficiency or the intelligent control to time-varying controlled device 240 Effect.
As shown in Figure 11 to Figure 13, in embodiment 5, multiple first electromagnets 160 is provided with and are coated on rigid frame 100 Outside, in parallel and/or arranged in series between multiple first electromagnets 160, by the break-make for controlling each first electromagnet 160 On the one hand electricity can adjust the present invention in the kinetic damping of translation direction, play the work(for the absorption of vibrations that is translatable to controlled device 240 Energy;On the other hand, as shown in figure 13, the energization of the first electromagnet of part 160 can be passed through so that in magnetic rheological liquid 150 Magnetic-particle is assembled in a certain region, and solidified characteristic occurs, pivot structure is constituted, so that 110 energy of mass body It is enough rotated, to absorb the twisting vibration of controlled device 240.In short, under independent magnetic force or combined magnetic constraint, mass body 110 can be around the rotation of symmetrically or non-symmetrically axis, or it is expected the stiffness variation control in rotation direction, and then realizes vibration or turn round The dynamic control of rotational oscillation.Therefore, the absorption that various dimensions vibrate may be implemented in the dynamic combination of flat turn in the present invention, is based on active damping or master Dynamic stiffness is adjusted, and is completed to the active of controlled device 240 or the inhibition of adaptive vibration.In addition, according to actual demand, Ke Yishe The absorption of vibrations for counting into one-dimensional to sextuple direction inhibits structure.Preferably, the rigid frame 100 is cube shaped, certainly, into Preferably, rigid frame 100 can also be elliposoidal, spherical shape, hemispherical or irregular shape etc. to one step.
As shown in Figure 1, dynamic vibration absorber provided by the invention can pass through the side such as fastener, bonding, welding, magnetic force systems Formula is directly installed in controlled device 240, is not influenced on original structure, in practical application, can also be carried out using original structure Embedded installation, such as between embedded two wing plates mounted on H-shaped material.Since installation form of the present invention is various, shake The dynamic dimension that absorbs can be controlled flexibly, therefore can also be widely used in building, bridge, wind turbine tower body and lathe, the vehicles Etc. in equipment.In addition, dynamic vibration absorber has adaptive ability, for the time-varying state of controlled state, in conjunction with internal or external Vibration detecting sensor be detected after dynamic tracking it is adjustable or adaptive to optimal working condition, meanwhile, the present invention is also Bump leveller group's system can be formed by way of array or combination, more effectively absorb the vibration of large scale controlled device 240.
The present invention also provides a kind of bump leveller group system, including controlled device 240 and above-mentioned dynamic vibration absorber, one Or multiple dynamic vibration absorbers are mounted in controlled device 240.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited in above-mentioned Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow Ring the substantive content of the present invention.In the absence of conflict, the feature in embodiments herein and embodiment can arbitrary phase Mutually combination.

Claims (10)

1. a kind of dynamic vibration absorber, which is characterized in that include rigid frame (100) and mass body (110), the rigid frame (100) cavity is provided in, cavity inside space forms article containing space, and the mass body (110) is mounted in article containing space, holds The remaining space that mass body (110) is taken up space is removed in object space forms filling space (120);
Mass body (110) is connected by following any structure or entire infrastructure with rigid frame (100):
-- fill up the damping liquid (130) of filling space (120);
-- the elastic component (140) of setting.
2. dynamic vibration absorber according to claim 1, which is characterized in that the damping liquid (130) is magnetic rheological liquid (150);Dynamic vibration absorber also includes control magnet;
It controls magnet and is mounted on rigid frame (100) and/or mass body (110).
3. dynamic vibration absorber according to claim 2, which is characterized in that the control magnet includes electromagnet, is mounted on Electromagnet on rigid frame (100), mass body (110) is respectively formed the first electromagnet (160), the second electromagnet (170).
4. dynamic vibration absorber according to claim 3, which is characterized in that multiple first electromagnets (160) are coated on rigidity The outside of frame (100), in parallel and/or arranged in series between multiple first electromagnets (160).
5. dynamic vibration absorber according to claim 1, which is characterized in that the mass body (110) includes following any Or appoint various structures:
-- ferromagnet;
-- permanent magnet;
-- magnetizer;
-- non-magnetizer.
6. dynamic vibration absorber according to claim 2, which is characterized in that be fastenedly connected on mass body (110) or one at Type has block (180), multiple blocks (180) to be distributed on the peripheral surface of mass body (110);
There are runner gap (190), the runner gap (190) to be used for magnetic between block (180) and rigid frame (100) inner wall Rheological fluid (150) passes through.
7. dynamic vibration absorber according to claim 1, which is characterized in that mass body is provided with through-hole runner in (110) (200), all connection, part are connected to or are not connected between multiple through-hole runners (200).
8. dynamic vibration absorber according to claim 2, which is characterized in that mass body (110) contains rigid bodies (210) With embedded permanent magnet (220),
External permanent magnet (230) is provided on rigid frame (100) as control magnet.
9. according to the dynamic vibration absorber described in claim 2,3,4,6, any one of 8, which is characterized in that in control magnet effect Under, the magnetic-particle in magnetic rheological liquid (150) is assembled, composition be connected to rigid frame (100) and mass body (110) it Between shaft.
10. a kind of bump leveller group system, which is characterized in that described in controlled device (240) and any one of claim 1 to 9 Dynamic vibration absorber, one or more dynamic vibration absorbers be mounted on controlled device (240) on.
CN201810814612.2A 2018-07-23 2018-07-23 Dynamic vibration absorber and vibration absorber group system Active CN108799394B (en)

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CN112727973A (en) * 2020-12-30 2021-04-30 清华大学 Magnetic liquid vibration damper

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