CN104948657A - Bionic layer and engine cylinder block vibration damping structure - Google Patents
Bionic layer and engine cylinder block vibration damping structure Download PDFInfo
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- CN104948657A CN104948657A CN201510243731.3A CN201510243731A CN104948657A CN 104948657 A CN104948657 A CN 104948657A CN 201510243731 A CN201510243731 A CN 201510243731A CN 104948657 A CN104948657 A CN 104948657A
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- layer
- engine cylinder
- vibration
- bionical
- cylinder block
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
- F16F15/0237—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means involving squeeze-film damping
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Vibration Prevention Devices (AREA)
- Fluid-Damping Devices (AREA)
- Springs (AREA)
Abstract
The invention belongs to the technical field of engine cylinder blocks, in particular to a bionic layer and engine cylinder block vibration damping structure. The structure comprises an engine cylinder block, a bionic vibration absorption and noise reduction layer for resisting the high frequency and reducing the vibration is arranged on the inner wall of the engine cylinder block, the bionic vibration absorption and noise reduction layer is constituted by protruding structures which are arranged on the inner wall of the engine cylinder block and have the vibration absorption effect, each protruding structure is a vibration absorption air bag, each absorption air bag is constituted by a surface layer welding plate arranged on the inner wall of the engine cylinder block, a flexible layer protruding on the surface layer welding plate and an isolation plate arranged in the middle of the flexible layer, each flexible layer is provided with minisize air holes, and a vibration damping mechanism is further arranged at the bottom of the engine cylinder block. According to the structure, the bionic principle that a coupling structure is formed by the skin and the feather covering the skin of an owl is utilized, the non-smooth inner wall surface of the engine cylinder block is designed, the vibration absorption and noise reduction purposes are achieved, the structure is simple, the structure is applicable to various engine cylinder blocks, and the vibration absorption effect is obvious.
Description
Technical field
The invention belongs to motor thick stick body technique field, be specifically related to a kind of bionical layer and engine cylinder-body vibration damping structure.
Background technique
The largest source vibrated in automobile is motor and tire, and the vibration of automobile can make the power character of automobile, Economy, travelling comfort and Security be affected.Solve the vibration problem of automobile, need to set about from each system.Motor car engine accessory wheel system refers to the system being driven the work such as water pump, fan, generator, air condition compressor by main shaft wheel.The vibration of motor meeting can make it produce a very large impact the workmanship of other transmission systems and life-span.Therefore, the problems demand for the effectiveness in vibration suppression improving engine cylinder-body needs to solve.
Cat owl surface characteristics has good noise-and-vibration-reduction characteristic, its wing, belly and instep Plantar portion and toe are covered with dense fine hair, bionic coupling noise elimination noise reduction Analysis on Mechanism has been carried out to cat owl nose of wing, find that its Non-smooth surface aerofoil profile leading edge is relative to smooth aerofoil profile, pneumatic noise 5-10dB can be reduced, and bionical Modeling Research has been carried out to its coverts, find to define the biological coupling structure being similar to microperforated panel between cat owl coverts and skin, and effectively can improve high-frequency resistance, reduce influence of vibration, a lot of scientist achieves the technology that magnetic rheological body etc. has high-tech color at present now simultaneously, the hardness that liquid changes oneself under the effect of electric current can be realized, reach the effect of vibration damping.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned defect, a kind of bionical layer and engine cylinder-body vibration damping structure are proposed, the bionic principle of cat owl skin and coverts coupled structure is utilized to devise Non-smooth surface engine cylinder-body inner wall surface, reach the object of vibration-absorbing denoising, structure is simple, be applicable to various engine cylinder-body, shock attenuation result is remarkable.
The technological scheme that the present invention solves the employing of its technical problem is as follows:
A kind of bionical layer and engine cylinder-body vibration damping structure, comprise engine cylinder-body, described engine cylinder-body inwall is provided with impedance high frequency, reduce the bionical vibration-absorbing denoising layer of vibration, bionical vibration-absorbing denoising layer is made up of the protruding structure with shock attenuation result being arranged on motor thick stick body inwall, protruding structure is absorbing air bag, absorbing air bag is by the top layer welded plate being arranged on motor thick stick body inwall, isolating plate in the middle part of the flexible layer of top layer welded plate projection and flexible layer is formed, top layer welded plate is convenient to be arranged on motor thick stick body inwall, by flexible layer, the protruding structure that isolating plate and top layer welded plate are formed forms the bionical top layer of miniature nanometer that has shock attenuation result, described flexible layer is provided with miniature pore, the damper mechanism be also provided with bottom engine cylinder-body, protruding structure makes engine inner wall be Non-smooth surface face, the bionical coverts with cat owl of protruding structure, the biological coupling structure being similar to microperforated panel formed between the bionical cat owl coverts of bionical vibration-absorbing denoising layer of the miniature stomatal limiting value on protruding structure and protruding structure flexible layer and skin, effectively raise high-frequency resistance, reduce noise, absorb the Be very effective of vibration, isolating plate is arranged on the middle part of protruding flexible layer, flexible layer is divided into two parts by isolating plate, high frequency is weakened herein gradually, greatly strengthen high-frequency resistance, absorbing air bag spreads over motor thick stick body inwall, absorbing air bag inherently plays the effect absorbing vibration, it constructs the biological coupling structure great impedance high frequency especially that bionical cat owl coverts form microperforated panel, absorb vibration, damper mechanism is arranged on bottom engine cylinder-body, damper mechanism can make corresponding variation according to vibration, play good effectiveness in vibration suppression.
Further, described damper mechanism is made up of the magnetic rheological body particle layer bottom motor thick stick body and the spring bottom magnetic rheological body particle layer, thin-walled layer is also provided with between magnetic rheological body particle layer and spring, magnetic rheological body particle layer can realize the fluctuations of vibration damping layer according to electric current, magnetic rheology elastic body (MRE) is a kind of self adaption material, its Young's modulus can change significantly under suitable magnetic field, MRE is filled in polymeric matrix material by the magnetic-particle of chaining to be formed, MRE is anisotropic material, the orientation of magnetic-particle to the process of Solid State Transformation, applies magnetic field from liquid state at mixture to cause, magnetic rheology elastic body take magneto-induced modulus as feature, Young's modulus can change with applied field strengths, solidify under magnetic field environment, thus the particle in matrix has chain structure, therefore, the effect of vibration and noise reducing can be played.
Further, described magnetic rheological body particle layer is by base elastomer, the electrode of the minitype particle in base elastomer and the upper and lower both sides of base elastomer is formed, electrode is battery-powered by what arrange, make generation magnetic field, minitype particle is produced in base elastomer and becomes elastic reaction, thus realize weaken motor be in operation produce judder, reach the comfort level that rider rides, avoid occurring jolting, and magnetic rheological body particle can realize along with the variation of electric current realizes vibration damping layer fluctuations, good stability, controllability, good reversibility, adjustability is good, response rapidly, the effect of engine variable layer damper mechanism can be realized, effectiveness in vibration suppression is remarkable, spring plays in bottom and slows down absorbing effect.
Further, described engine cylinder-body is also provided with pleated structure, the damping vibration attenuation mechanism that pleated structure place is spring, thin-walled layer is formed, and the damping vibration attenuation mechanism at pleated structure place can slow down absorption vibration greatly from thick stick body structure, strengthens effectiveness in vibration suppression.
Further, motor thick stick external surface is provided with bionical vibration-absorbing denoising layer, bionical for micro/nano level vibration damping layer is arranged at internal surface and the outer surface of engine cylinder-body, and realize the operating effectiveness in vibration suppression of mechanism, effectiveness in vibration suppression is remarkable.
Technique effect acquired by the present invention is: adopt technique scheme, engine cylinder-body inwall is designed to Non-smooth surface face by the present invention, absorbing coupling principle between bionical cat owl skin and coverts structure, define the biological coupling structure being similar to microperforated panel, effective raising high-frequency resistance, reach noise reduction, absorb and reduce vibration, structure is simple, from microcosmic angle, bionical vibration-absorbing denoising layer is positioned over internal surface and the outer surface of engine cylinder-body, realize the operating effectiveness in vibration suppression of mechanism, macroscopically, adopt damper mechanism, damping vibration attenuation mechanism, realize the effect of engine variable layer damper mechanism, especially magnetic rheological body particle realizes variable layer damping effect to motor thick stick body, substantially increase the noise-and-vibration-reduction effect of motor thick stick body, and be applicable to various engine cylinder-body, shock attenuation result is remarkable.
Accompanying drawing explanation
By the detailed description below in conjunction with accompanying drawing, aforesaid and other object, the feature and advantage of the present invention will become apparent.
Fig. 1 is engine cylinder-body structural representation of the present invention;
Fig. 2 is damper mechanism structural representation of the present invention;
Fig. 3 is engine cylinder-body pleated structure place's damping vibration attenuation mechanism structure schematic diagram of the present invention;
Fig. 4 is the theory structure schematic diagram of magnetic rheological body particle layer of the present invention;
Fig. 5 is the structural representation of absorbing air bag of the present invention;
Fig. 6 is the present invention's bionical vibration-absorbing denoising layer schematic diagram.
Wherein: 1 is engine cylinder, 2 is pleated structure, and 3 is protruding structure, 4 is top layer welded plate, and 5 is flexible layer, and 6 is isolating plate, 7 is damper mechanism, 8 is magnetic rheological body particle layer, and 9 is spring, and 10 is thin-walled layer, 11 is base elastomer, 12 is minitype particle, and 13 is electrode, and 14 is bionical vibration-absorbing denoising layer.
Embodiment
For making technological scheme of the present invention and feature clearly, below in conjunction with example and accompanying drawing, the present invention is described in further detail.At this, following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
The bionical layer of one as shown in Figure 1 and engine cylinder-body vibration damping structure, comprise engine cylinder-body 1, the inwall of engine cylinder-body 1 is provided with impedance high frequency, reduce the bionical vibration-absorbing denoising layer 14 of vibration, bionical vibration-absorbing denoising layer 14 is as shown in Figure 6 made up of the protruding structure 3 with shock attenuation result being arranged on motor thick stick body 1 inwall, protruding structure 3 makes the inwall of motor thick stick body 1 be Non-smooth surface face, make into coverts and the skin of bionical cat owl, protruding structure 3 is miniature absorbing air bag, absorbing air bag is as described in Figure 5 by the top layer welded plate 4 being arranged on motor thick stick body 1 inwall, isolating plate 6 in the middle part of the flexible layer 5 of top layer welded plate 4 projection and flexible layer 5 is formed, flexible layer 5 is provided with miniature pore, isolating plate 6 is arranged on the middle part of protruding flexible layer 5, flexible layer 5 is divided into upper and lower two parts by isolating plate 6, high frequency is weakened herein gradually, simultaneously in conjunction with miniature absorbing air bag itself, greatly strengthen high-frequency resistance, absorbing air bag spreads over the inwall of motor thick stick body 1, bionical cat owl coverts form the biological coupling structure great impedance high frequency especially of microperforated panel, noise reduction, absorb vibration.
Damper mechanism 7 bottom engine cylinder-body 1 is as shown in Figure 2 by being arranged on the magnetic rheological body particle layer 8 bottom motor thick stick body 1 and the spring 9 bottom magnetic rheological body particle layer 8 is formed, thin-walled layer 10 is also provided with between magnetic rheological body particle layer 8 and spring 9, spring 9 is flexure spring, thin-walled layer 10 is miniature flexible thin-walled layer, spring 9 upper and lower sides is equipped with flexible thin parietal layer, prevent foreign matter from entering, put forward layer 8 no-float with magnetorheological simultaneously, spring 9 elastic force can not be weakened, play better absorbing effect, as shown in Figure 4, magnetic rheological body particle layer 8 is by base elastomer 11, the electrode 13 of the minitype particle 12 in base elastomer 11 and base elastomer about 11 both sides is formed, magnetic rheology elastic body (MRE) is a kind of self adaption material, its Young's modulus can change significantly under suitable magnetic field.MRE is filled in polymeric matrix material by the magnetic-particle of chaining to be formed, MRE is anisotropic material, the orientation of magnetic-particle to the process of Solid State Transformation, applies magnetic field from liquid state at mixture to cause, MRE is considered to the solid-state analog of magnetic flow liquid (MRF) usually, but, after both essential difference is that magnetic flow liquid is operated in yield range, and before magnetic rheology elastic body is operated in yield range, therefore, magnetic rheology elastic body take magneto-induced modulus as feature, and magnetic flow liquid causes yield stress for feature with magnetic force, magnetic rheological body particle layer 8 can realize along with the variation of electric current realizes vibration damping layer fluctuations, electrode 13 acts on magnetic rheology elastic body layer 8, and produce respective change, minitype particle 12 is wherein produced under magnetic fields and becomes elastic reaction, thus realize weaken motor be in operation produce judder, reach the comfort level that rider rides, avoid occurring jolting, and the bottom of engine cylinder-body 1 is arranged in conjunction with damper mechanism 7, damper mechanism 7 can make corresponding variation according to vibration, play good effectiveness in vibration suppression, engine cylinder-body 1 pleated structure 2 place is as shown in Figure 3 spring 9, the damping vibration attenuation mechanism that thin-walled layer 10 is formed, coordinate with the damper mechanism 7 bottom motor thick stick body 1, act on engine cylinder-body 1 and realize damping effect, in addition, consider from damper mechanism 7 and base aspect, traditional elastic stand apparatus is applied in various mechanism, with the displacement of commensurate structure and rotation.The performance of these passive systems can be drawn by suitable rigidity and damping formulae discovery, specifically applies requirement to meet, but, they can not independently adjust parameter to reach optimum effect in practical operation, and the magnetic rheological body particle layer 8 variation rigidity elastomer in the present invention can overcome these restrictions, realize good absorbing effect, structure of the present invention is simple, be applicable to various engine cylinder-body, shock attenuation result is remarkable, and the biological coupling structure being formed between bionical cat owl coverts and skin and be similar to microperforated panel is applied from microcosmic, effectively to improve high-frequency resistance, reduce influence of vibration, reach noise reduction absorbing effect, the effect of engine variable layer damper mechanism is realized for macroscopically adopting the damping vibration attenuation mechanism at the damper mechanism 7 bottom motor thick stick body 1 and motor thick stick body 1 pleated structure 2 place, to improve shock attenuation result, and motor thick stick body 1 outer surface is also provided with bionical vibration-absorbing denoising layer, realize the operating effectiveness in vibration suppression of mechanism, the adherent zone with inclination column structure can reduce desorption power to 80% of common adherent zone, and adherent zone energy concentration when reducing desorption to a certain extent, accelerate energy dissipation after desorption, be about 72% of normal tape decay time, the adherent zone with inclination column and micro-pore composite structure is reducing desorption power, and while reducing energy concentration, a nearly step enhances effectiveness in vibration suppression.Its decay time is about 30% of common adherent zone.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (5)
1. a bionical layer and engine cylinder-body vibration damping structure, comprise engine cylinder-body, it is characterized in that: described engine cylinder-body inwall is provided with impedance high frequency, reduce the bionical vibration-absorbing denoising layer of vibration, bionical vibration-absorbing denoising layer is made up of the protruding structure with shock attenuation result being arranged on motor thick stick body inwall, protruding structure is absorbing air bag, absorbing air bag is by the top layer welded plate being arranged on motor thick stick body inwall, isolating plate in the middle part of the flexible layer of top layer welded plate projection and flexible layer is formed, described flexible layer is provided with miniature pore, the damper mechanism be also provided with bottom engine cylinder-body.
2. to remove the bionical layer of the one described in 1 and engine cylinder-body vibration damping structure according to right, it is characterized in that: described damper mechanism is made up of the magnetic rheological body particle layer bottom motor thick stick body and the spring bottom magnetic rheological body particle layer, is also provided with thin-walled layer between magnetic rheological body particle layer and spring.
3. to remove the bionical layer of one described in 1 or 2 any one and engine cylinder-body vibration damping structure according to right, it is characterized in that: described magnetic rheological body particle layer is made up of the electrode of the minitype particle in base elastomer, base elastomer and the upper and lower both sides of base elastomer.
4. will remove the bionical layer of the one described in 1 and engine cylinder-body vibration damping structure according to right, it is characterized in that: described engine cylinder-body is also provided with pleated structure, pleated structure place is the damping vibration attenuation mechanism of spring, thin-walled layer formation.
5. to remove the bionical layer of the one described in 1 and engine cylinder-body vibration damping structure according to right, it is characterized in that: motor thick stick external surface is provided with bionical vibration-absorbing denoising layer.
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| CN201510243731.3A CN104948657B (en) | 2015-05-13 | 2015-05-13 | A kind of bionical layer engine cylinder-body vibration-proof structure |
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| CN201510243731.3A CN104948657B (en) | 2015-05-13 | 2015-05-13 | A kind of bionical layer engine cylinder-body vibration-proof structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484844A (en) * | 2016-01-30 | 2016-04-13 | 吉林大学 | Bionic exhaust tail pipe of tractor |
| CN108730395A (en) * | 2018-07-31 | 2018-11-02 | 东北大学 | Damper with bionical ear bones chain structure |
| WO2019218599A1 (en) * | 2018-05-14 | 2019-11-21 | 格力电器（武汉）有限公司 | Device having liquid bag noise-reduction and vibration-damping structure, and vacuum cleaner having same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484844A (en) * | 2016-01-30 | 2016-04-13 | 吉林大学 | Bionic exhaust tail pipe of tractor |
| WO2019218599A1 (en) * | 2018-05-14 | 2019-11-21 | 格力电器（武汉）有限公司 | Device having liquid bag noise-reduction and vibration-damping structure, and vacuum cleaner having same |
| CN108730395A (en) * | 2018-07-31 | 2018-11-02 | 东北大学 | Damper with bionical ear bones chain structure |
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| CN104948657B (en) | 2017-03-01 |
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