CN107696789B - Dynamic vibration absorbing type wheel noise reduction block and noise reduction method - Google Patents
Dynamic vibration absorbing type wheel noise reduction block and noise reduction method Download PDFInfo
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- CN107696789B CN107696789B CN201710981730.8A CN201710981730A CN107696789B CN 107696789 B CN107696789 B CN 107696789B CN 201710981730 A CN201710981730 A CN 201710981730A CN 107696789 B CN107696789 B CN 107696789B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B17/00—Wheels characterised by rail-engaging elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B17/00—Wheels characterised by rail-engaging elements
- B60B17/0006—Construction of wheel bodies, e.g. disc wheels
- B60B17/0024—Construction of wheel bodies, e.g. disc wheels with noise reducing means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B2900/00—Purpose of invention
- B60B2900/10—Reduction of
- B60B2900/133—Noise
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The power vibration absorption type wheel noise reduction block comprises a stable support and an elastic damping layer, wherein a mounting hole is formed in the stable support, the stable support comprises a mounting plate, a resonance plate and an intermediate body, the resonance plate comprises an elastic part and a mass part, the elastic part and the mass part are alternately distributed, and the elastic damping layer and the resonance plate are alternately distributed. During running, the wheel can cause intense resonance under the excitation action of external force, and the external excitation is very complex, so that the vibration generated by the wheel is of multi-order modal vibration frequency. According to the invention, the resonance plate of the stable support is divided into the elastic part and the mass part along the length direction, the thickness of the elastic part is smaller than that of the mass part, a plurality of natural frequency vibrator systems are formed, and the natural frequencies of the vibrator systems are regulated to be similar to the multi-order modal vibration frequency when the wheels run, so that the vibration reduction and noise reduction effects are greatly enhanced.
Description
Technical Field
The invention relates to a device for damping and reducing noise of a wheel, in particular to a noise reduction block arranged on the wheel.
Background
When the train runs, wheels roll on the track, and the surface roughness and the uneven tread of the wheel track excite the modal vibration response of the wheels to generate strong vibration and structural noise, and the strong vibration and structural noise are radiated to the air through the surface of the wheels. If a noise reduction structure or material is arranged on the wheel, the purpose of reducing the noise radiation level of the wheel can be achieved by inhibiting the energy of a vibration noise source.
The prior art of wheel noise reduction mainly has 4 kinds: the wheel damper, the wheel noise reduction plate, the wheel noise reduction ring and the elastic wheel.
Among them, the closest prior art to the present invention is the wheel damper. Through searching, there are two published patents of a multilayer damper for a CN201620760079.2 wheel and a multilayer damper for a CN201610568521.6 wheel in China, and the technical scheme and the structural characteristics are as follows: the utility model provides a multilayer damper for wheel, its structural component includes mounting panel (1), restraint layer (2), gasket (4) and damping rubber (3), mounting panel, restraint layer, gasket and damping rubber constitute attenuator (9), the attenuator is annular structure even install in the dovetail on wheel (8) through bolt (10), restraint layer and gasket form sandwich structure in turn, sandwich structure's upper portion arc terminal surface welds with the mounting panel, the space that produces in the sandwich structure is filled with damping rubber, damping rubber bonds together with restraint layer. The thickness of each layer of steel plate of the constraint layer is different, the thicknesses of the gasket and the damping rubber are the same, and the thickness and the number of layers of the damper are determined according to the natural frequency of the wheel. The dampers are all arranged on the inner side of the tread of the wheel, and the number of the installed dampers is even. The damper adopts the dynamic vibration absorber principle, and each constraint layer has different rigidities and masses, so that the effect of damping rubber can be exerted to the greatest extent in the process of wheel vibration, and meanwhile, the damper is mounted on the inner side of the tread of the wheel through bolts, so that the radial vibration of the wheel can be greatly reduced under the condition of not affecting the driving safety, and the radiation noise is reduced.
The damping rubber and the constraint layer are adopted together to damp vibration and reduce noise, but the damping rubber and the constraint layer in the prior art have single structure, no resonance plates are arranged on two sides of the intermediate body, the resonance plates are cantilever beams, the elastic parts and the mass parts of the resonance plates are alternately distributed, and the elastic damping layer and the resonance plates are alternately distributed. Therefore, the prior art solves the practical problem that the multi-order modal frequencies exist in the running process of the wheels, improves vibration reduction and noise reduction of a plurality of important natural frequencies in the multi-order modal frequencies, and needs further improvement.
Disclosure of Invention
The invention aims to solve the technical problems that: how to absorb and reduce the vibration of the multi-order modal frequency generated in the actual running of the wheel.
The technical scheme provided by the invention is as follows: the utility model provides a piece of making an uproar falls in power vibration-absorbing wheel, wheel make an uproar piece falls including firm support and elastic damping layer, and it has the mounting hole to open on the firm support, and firm support includes mounting panel, resonance board and midbody, and the resonance board includes elasticity part and quality part, elasticity part and quality part alternate distribution, and elastic damping layer and resonance board alternate distribution.
Further, the intermediate is an integral part, the intermediate is arranged above the mounting plate, the resonance plates are arranged on two sides of the mounting plate, the resonance plates are of a cantilever beam type structure, a cavity is formed between the resonance plates on the same side, and the elastic damping layer is embedded in the cavity and/or distributed on the outer surface of the stable support.
Further, the mounting plates, the resonance plates and the elastic damping layers on two sides of the intermediate are symmetrically distributed; the stable support is made of a metal material, the resonance plate of the stable support is divided into an elastic part and a mass part along the length direction, and the thickness of the elastic part is smaller than that of the mass part and/or the width of the elastic part is smaller than that of the mass part; the elastic damping layer is made of elastic damping material, and is adhered with the vibration plate into a whole.
Further, one end of the resonance plate, which is close to the intermediate body, is an elastic part, and one end of the resonance plate, which is far away from the intermediate body, is a mass part; the elastic damping layers are embedded between the resonance plates, the elastic damping layers are two layers, the outer side of the elastic damping layer on the upper layer is strip-shaped, the inner side of the elastic damping layer is n-shaped, and the elastic damping layer on the lower layer is strip-shaped.
Further, one end of the resonance plate, which is close to the intermediate body, is an elastic part, and one end of the resonance plate, which is far away from the intermediate body, is a mass part; the elastic damping layers are embedded between the resonance plates, the elastic damping layers are two layers, the outer side of the elastic damping layer on the upper layer is strip-shaped, the inner side of the elastic damping layer is square, the square elastic damping layers on the upper layer and the strip-shaped elastic damping layers are alternately distributed, and the elastic damping layer on the lower layer is strip-shaped.
Further, one end of the resonance plate, which is close to the intermediate body, is an elastic part, and one end of the resonance plate, which is far away from the intermediate body, is a mass part; the elastic damping layers are embedded between the resonance plates, the number of the elastic damping layers is two, the elastic damping layers are F-shaped, and the elastic damping layers on the upper layer and the lower layer are symmetrically distributed.
Further, the intermediate body is of an integrated structure and is arranged on the mounting plate, and two ends of the mounting plate are respectively provided with one intermediate body; and mounting holes penetrating through the intermediate bodies and the mounting plate are formed in the intermediate bodies at the two ends of the mounting plate, and a resonance plate made of metal and an elastic damping layer made of an elastic damping material are arranged between the two intermediate bodies and are alternately distributed.
The noise reduction method of the dynamic vibration absorbing wheel noise reduction block comprises the steps that a stable support comprises a mounting plate, a resonance plate and an intermediate body, and bending rigidity and strength are enhanced through the stable support; the elastic parts and the mass parts are arranged on the resonance plate along the length direction, the elastic parts and the mass parts are alternately distributed, and the elastic damping layers and the resonance plate are alternately distributed, so that a plurality of natural frequency vibrator systems are formed on the wheel noise reduction block, and the vibration and noise reduction effect of the wheel noise reduction block is improved.
Further, the stabilizing support is made of metal, the thickness of the elastic part is set to be smaller than that of the mass part, and the elastic part and the mass part are alternately distributed, so that a structure in which the rigidity of the resonance plate is subjected to gradient change is formed; the elastic damping layer is made of an elastic damping material, and is embedded between the resonance plates and/or distributed on the outer surface of the stable support, so that a plurality of natural frequency vibrator systems are formed, and the effects of multi-order frequency and broadband vibration and noise reduction are realized on the wheels through the dynamic vibration absorption effect of the elastic damping layer.
Further, through digging holes on the strip-shaped resonance plates and adjusting the space between the resonance plates, a cavity is formed between the resonance plates, and the elastic damping layer is embedded in the cavity; the natural frequencies of the vibrator system are adjusted by adjusting the length, width and thickness of the mass part and the elastic part of each layer of the resonance plate, the length, width and thickness of the elastic damping layer in the cavity and digging holes in the resonance plate and the elastic damping layer, so that the vibrator system is formed with a plurality of different natural frequencies, and the natural frequencies of the vibrator system are adjusted to be similar to the multi-order modal vibration frequency when the wheel operates, thereby enhancing the vibration reduction and noise reduction effects.
The invention has the advantages that:
1. the stable support is formed by integrally casting a metal material, or is formed by integrally machining, or is formed by welding after a plurality of layers of steel plates are machined, or is formed by 3D printing and the like, so that a seamless whole is formed. Each resonance plate is of an cantilever beam type structure, the elastic damping layers are seamlessly embedded and filled in the cavities among the resonance plates and/or are seamlessly connected to the outer surface of the stable support, so that the stable support made of metal is formed as a framework, and the stable support has enough bending rigidity and strength; an elastic damping layer made of an elastic damping material is used as a main vibration reduction component, and an integral dynamic vibration absorbing wheel noise reduction block is provided. The wheel noise reduction block has the advantages of firm structure and long service life besides good vibration absorption and noise reduction effects.
2. During running, the wheel can cause intense resonance under the excitation action of external force, and the external excitation is very complex, so that the vibration generated by the wheel is of multi-order modal vibration frequency. According to the invention, the resonance plates of the stable support are divided into the elastic part and the mass part along the length direction, the thickness of the elastic part is smaller than that of the mass part, the elastic damping layers are seamlessly embedded and filled in the cavities with alternately distributed thicknesses among the resonance plates, so that a plurality of natural frequency vibrator systems are formed, and the natural frequencies of the vibrator systems are regulated to be similar to the multi-order modal vibration frequency when the wheels run, so that the vibration reduction and noise reduction effects are greatly enhanced.
Drawings
Fig. 1 is a schematic perspective view of a first embodiment;
fig. 2 is a schematic diagram of a front view direction of the first embodiment;
fig. 3 is a schematic perspective view of a second embodiment;
fig. 4 is a schematic diagram of a front view direction of a second embodiment;
fig. 5 is a schematic perspective view of a third embodiment;
fig. 6 is a schematic diagram of the front view direction of the third embodiment;
in the figure: 1 mounting plate, 2 resonance plate, 3 intermediate, 4 elastic damping layer, 5 mounting hole.
Detailed Description
The invention is further described below with reference to examples and figures:
example 1
The plurality of wheel noise reduction blocks are arranged in a circle along the circumferential direction of the inner side of the wheel and are arranged on the inner side of the wheel. As shown in fig. 1 and 2, the wheel noise reduction block comprises a stable bracket and an elastic damping layer 4, wherein the stable bracket comprises a mounting plate 1, a resonance plate 2 and an intermediate body 3; the elastic damping layer 4 is divided into an elastic portion and a mass portion. Wherein: the mounting plate 1 has a one-layer structure, the left end and the right end are respectively provided with a semicircular mounting hole 5, two semicircular mounting holes 5 on the mounting plate 1 of two adjacent wheel noise reduction blocks can be combined into a circular mounting hole 5, and the middle part of the middle body 3 is provided with a circular mounting hole 5 which penetrates through the middle body 3 and the mounting plate 1. The resonance plate 2 may have a single-layer structure or a multi-layer structure, and the intermediate body 3 is seamlessly connected with the mounting plate 1 and the resonance plate 2 into a whole.
The mounting plate 1, the resonator plate 2 and the intermediate body 3 are all made of metal and together constitute a stable bracket, which is required to have sufficient bending rigidity and strength. The stable support is firstly subjected to pretreatment such as sand blasting, phosphating and gluing, and is placed into a mould preheated by a vulcanizing machine, damping rubber sizing material is injected into a cavity of a metal sandwich structure in the mould, proper vulcanization temperature, proper vulcanization pressure and proper vulcanization time are set, an elastic damping layer 4 is formed in a rubber metal high-temperature vulcanization molding mode, and the elastic damping layer and the stable support are vulcanized and bonded into a whole to form the wheel noise reduction block.
In order to ensure the dynamic balance requirement and vibration reduction and noise reduction effects of the wheels, a plurality of wheel noise reduction blocks are generally required to be installed on each wheel, and the number of the wheel noise reduction blocks can be even or odd, but the wheel noise reduction blocks are required to be arranged on the same circumference and uniformly distributed. When the wheel rolls, the severe resonance of the resonance plate 2 is caused, and the wheel noise reduction block absorbs the vibration energy of the wheel and is converted into heat energy through damping rubber around the resonance plate 2 to be dissipated; meanwhile, the first elastic damping layer 4 adjacent to the mounting plate 1 and the first resonant plate 2 are combined to form a constraint damping structure, so that vibration reduction and noise reduction can be realized on the wheel by utilizing the constraint damping effect. Because the wheel has multi-order modal frequencies and a plurality of vibration noise frequencies which need to be controlled mainly, the resonance plate 2 of the wheel noise reduction block is required to be arranged into a multi-layer structure or a plurality of vibration mass body structures, and the wheel noise reduction block can realize a plurality of different natural frequency vibrator systems by combining the elasticity and the damping effect of the damping rubber layer through gradient arrangement and alternate distribution arrangement of the mass and the rigidity of the resonance plate, and has the similar working main frequency as much as possible with the wheel, so that good vibration reduction and noise reduction effects are realized.
The specific structure of this embodiment is: the intermediate body 3 is arranged above the mounting plate 1, the resonance plates 2 are arranged on two sides of the mounting plate 1, the resonance plates 2 are of cantilever beam type structures, and the mounting plate 1, the resonance plates 2 and the intermediate body 3 are connected into a whole in a seamless mode. A cavity is formed between the resonator plates 2 on the same side, and an elastic damping layer 4 is embedded in the cavity. The mounting plates 1, the resonance plates 2 and the elastic damping layers 4 on two sides of the intermediate body 3 are symmetrically distributed, the resonance plates 2 of the stable support are divided into elastic parts and mass parts along the length direction, the thickness of the elastic parts is smaller than that of the mass parts, and the elastic parts and the mass parts are alternately distributed. The elastic damping layer 4 embedded in the cavity of the resonance plate 2 is two layers, the outer side of the elastic damping layer 4 on the upper layer is long-strip-shaped, the inner side is n-shaped, and the elastic damping layer 4 on the lower layer is long-strip-shaped.
In this embodiment: each of the resonator plates 2 has an cantilever beam structure, and is divided into an elastic portion and a mass portion along the length direction, wherein the elastic portion is adjacent to the intermediate body 3, the mass portion is adjacent to the outer side, and the elastic portion and the mass portion are alternately distributed. Because the plate thickness of the elastic part is obviously smaller than that of the mass part, when the wheel noise reduction block vibrates, the elastic part of the resonance plate 2 presents the characteristics of low rigidity and high elasticity, the mass part presents the characteristics of high rigidity and concentrated mass, and the vibration subsystem with required rigidity and mass and natural frequency is realized by combining the length, width and thickness dimension settings of the two sections and the modulus and damping setting of damping rubber. While the resonator plates 2 of the different layers can be set by different parameters: the vibration subsystems with different natural frequencies are realized by the length, the thickness, the width, the mass, the thickness of the rubber layer and the like of the steel plate and the mutual staggered arrangement, so that the noise reduction block can have a plurality of natural frequency vibration subsystems, and finally the vibration reduction and noise reduction effects of multiple-order frequency and wide frequency band are realized for the wheels through the dynamic vibration absorption function with damping.
Example two
As shown in fig. 3 and 4, the present embodiment is different from the first embodiment in that: the shape of the elastic part and the shape of the mass part of the resonance plate 2 are different, the elastic damping layers 4 are embedded in the cavity between the resonance plates 2, the number of layers and the shape of the resonance plate 2 divide the elastic damping layers 4 into two layers, the outer side of the elastic damping layer 4 on the upper layer is strip-shaped, the inner side of the elastic damping layer 4 on the upper layer is square, the square elastic damping layers 4 on the upper layer and the strip-shaped elastic damping layers 4 on the lower layer are alternately distributed, and the elastic damping layers 4 on the lower layer are strip-shaped.
Example III
As shown in fig. 5 and 6, the present embodiment is different from the first and second embodiments in that: the shape of the elastic part and the shape of the mass part of the resonance plate 2 are different, 2 layers or more layers of resonance plates are arranged side by side along the horizontal width direction (namely the axial direction of the wheel), and gaps are reserved among the resonance plates arranged side by side, so that the number of the resonance plates is increased, the axial rigidity of the elastic section of the resonance plate is reduced, and the vibration and noise reduction effect on the axial direction of the wheel is improved; the elastic damping layers 4 are embedded in the cavities between the resonance plates 2, the number of layers and the shape of the resonance plates 2 divide the elastic damping layers 4 into two layers, the elastic damping layers 4 are F-shaped, and the elastic damping layers 4 on the upper layer and the lower layer are symmetrically distributed.
Example IV
Not shown, the difference between this embodiment and the previous three embodiments is that: one end of the resonance plate 2, which is close to the intermediate body 3, is a mass part, the outer side of the resonance plate 2 is an elastic part, and the elastic part and the mass part are alternately distributed; an elastic damping layer 4 is embedded between the resonance plates 2, and the outer surface of the resonance plate 2 and/or the outer surface of the mounting plate 1 on the uppermost layer are also adhered with the elastic damping layer 4, namely: the elastic damping layer 4 in this embodiment is embedded in the cavity between the resonance plates 2 and also wrapped outside the steady rest.
Example five
Not shown in the drawings, the present embodiment is different from the first four embodiments in that: two ends of the mounting plate 1 are respectively provided with an intermediate body 3, and mounting holes 5 which penetrate through the intermediate body 3 and the mounting plate 1 are formed in the intermediate body 3 at two ends of the mounting plate 1. That is to say: the two ends of the wheel noise reduction block are provided with a through mounting hole 5 respectively, and the middle part of the wheel noise reduction block is not provided with the mounting hole 5.
A resonant plate 2 made of metal and an elastic damping layer 4 made of an elastic damping material are arranged between the two intermediate bodies 3, a cavity is still arranged between two adjacent resonant plates 2, and the elastic damping layer 4 is still filled in the cavity, so that the resonant plates 2 and the elastic damping layers 4 are alternately distributed. The resonance plate 2 may be a circular arc plate having a uniform thickness and width, or may be a structure in which an elastic portion and a mass portion are divided in the longitudinal direction, the thickness of the elastic portion being smaller than the thickness of the mass portion and/or the width of the elastic portion being smaller than the width of the mass portion, as in embodiments 1 to 4. The elastic damping layer 4 may fill the cavity between the resonator plates 2, or may be filled in the cavity at intervals.
It will be apparent that several improvements or modifications may be made without departing from the principles of the invention.
Claims (3)
1. The dynamic vibration absorbing type wheel noise reduction block is characterized in that the stable support comprises a mounting plate (1), a resonant plate (2) and an intermediate body (3), wherein the mounting plate (1) has a one-layer structure, semicircular mounting holes are respectively formed in the left end and the right end, two semicircular mounting holes on the mounting plate (1) of two adjacent wheel noise reduction blocks can be combined into a circular mounting hole, the resonant plate (2) comprises an elastic part and a mass part, the elastic part and the mass part are alternately distributed, and the elastic damping layer (4) and the resonant plate (2) are alternately distributed; the middle body (3) is arranged on the mounting plate (1), a circular mounting hole which penetrates through the middle body (3) and the mounting plate (1) is formed in the middle of the middle body (3), the resonance plates (2) are arranged on two sides of the middle body (3), the resonance plates (2) are of cantilever beam type structures, a cavity is formed between the resonance plates (2) on the same side, and the elastic damping layer (4) is embedded in the cavity and stabilizes the outer surface of the support;
the stable support is made of metal materials, and the resonance plate (2) of the stable support is divided into an elastic part and a mass part along the length direction, wherein the thickness of the elastic part is smaller than that of the mass part; the elastic damping layer (4) is made of an elastic damping material, and the elastic damping layer (4) is bonded with the resonance plate (2) into a whole;
one end of the resonance plate (2) close to the intermediate body (3) is an elastic part, and one end of the resonance plate far away from the intermediate body (3) is a mass part; the elastic damping layers (4) are embedded between the resonance plates (2), the elastic damping layers (4) are two layers, the outer side of the elastic damping layer (4) on the upper layer is long-strip-shaped, the inner side is n-shaped, and the elastic damping layer (4) on the lower layer is long-strip-shaped;
or one end of the resonance plate (2) close to the intermediate body (3) is an elastic part, and one end far away from the intermediate body (3) is a mass part; the elastic damping layers (4) are embedded between the resonance plates (2), the elastic damping layers (4) are two layers, the outer side of the elastic damping layer (4) on the upper layer is strip-shaped, the inner side of the elastic damping layer is square, the square elastic damping layers (4) on the upper layer and the strip-shaped elastic damping layers (4) are alternately distributed, and the elastic damping layers (4) on the lower layer are strip-shaped;
or one end of the resonance plate (2) close to the intermediate body (3) is an elastic part, and one end far away from the intermediate body (3) is a mass part; the elastic damping layers (4) are embedded between the resonance plates (2), the number of the elastic damping layers (4) is two, the elastic damping layers (4) are F-shaped, and the elastic damping layers (4) on the upper layer and the lower layer are symmetrically distributed.
2. The power vibration absorption type wheel noise reduction block is characterized by comprising a stable support and an elastic damping layer (4), wherein the stable support comprises a mounting plate (1), a resonant plate (2) and an intermediate body (3), the mounting plate (1) has a one-layer structure, semicircular mounting holes are respectively formed in the left end and the right end, two semicircular mounting holes on the mounting plate (1) of two adjacent wheel noise reduction blocks can be combined into a circular mounting hole, the resonant plate (2) comprises an elastic part and a mass part, the elastic part and the mass part are alternately distributed, and the elastic damping layer (4) and the resonant plate (2) are alternately distributed; the intermediate body (3) is of an integrated structure, the intermediate body (3) is arranged on the mounting plate (1), and two ends of the mounting plate (1) are respectively provided with the intermediate body (3); the middle bodies (3) at the two ends of the mounting plate (1) are provided with mounting holes penetrating through the middle bodies (3) and the mounting plate (1), a resonant plate (2) made of metal and an elastic damping layer (4) made of an elastic damping material are arranged between the two middle bodies, the elastic damping layer (4) and the resonant plate (2) are bonded into a whole, and the resonant plate (2) and the elastic damping layer (4) are alternately distributed; the elastic parts and the mass parts are arranged on the resonance plate (2) along the length direction, the elastic parts and the mass parts are alternately distributed, the elastic damping layers (4) and the resonance plate (2) are alternately distributed, and the thickness of the elastic parts is smaller than that of the mass parts, so that the wheel noise reduction block is formed with the characteristics of taking dynamic vibration absorption as a main part and restraining damping as an auxiliary part, and the vibration reduction and noise reduction effects are achieved.
3. The noise reduction method of the dynamic vibration absorbing wheel noise reduction block is characterized in that the dynamic vibration absorbing wheel noise reduction block as claimed in claim 1 is adopted, so that a plurality of natural frequency vibrator systems are formed, and the dynamic vibration absorbing effect of the elastic damping layer (4) is utilized to realize the vibration reduction and noise reduction effects of multiple-order frequency and wide frequency band on the wheels;
a cavity is formed between the resonant plates (2) by digging holes on the strip-shaped resonant plates (2) and adjusting the space between the resonant plates (2), and an elastic damping layer (4) is embedded in the cavity; the natural frequencies of the vibrator system are adjusted by adjusting the length and thickness of the mass part and the elastic part of each layer of the resonance plate (2), the length and thickness of the elastic damping layer (4) in the cavity and digging holes in the resonance plate, so that the vibrator system is provided with a plurality of different natural frequencies, and the natural frequencies of the vibrator system are adjusted to be similar to the multi-order modal vibration frequency when the wheel runs, thereby enhancing the vibration reduction and noise reduction effects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710981730.8A CN107696789B (en) | 2017-10-20 | 2017-10-20 | Dynamic vibration absorbing type wheel noise reduction block and noise reduction method |
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| CN201710981730.8A CN107696789B (en) | 2017-10-20 | 2017-10-20 | Dynamic vibration absorbing type wheel noise reduction block and noise reduction method |
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| CN107696789A CN107696789A (en) | 2018-02-16 |
| CN107696789B true CN107696789B (en) | 2023-08-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112413034B (en) * | 2019-08-23 | 2022-06-14 | 上海汽车集团股份有限公司 | Vehicle and vibration damping assembly |
| CN111550514B (en) * | 2020-04-07 | 2022-03-15 | 株洲时代新材料科技股份有限公司 | Multi-frequency dynamic vibration absorption method and multi-frequency dynamic vibration absorber |
| CN111654993B (en) * | 2020-05-22 | 2021-11-05 | 中国航空工业集团公司西安航空计算技术研究所 | Module equal-mass variable-rigidity method and module equal-mass variable-rigidity module |
| CN111761987B (en) * | 2020-07-07 | 2022-09-27 | 株洲时代新材料科技股份有限公司 | Wheel noise reduction damper and damping material filling method |
| CN114550683B (en) * | 2020-11-11 | 2024-05-14 | 中信戴卡股份有限公司 | Sound absorber unit and wheel with sound absorber |
| CN112428745B (en) * | 2020-12-01 | 2022-06-17 | 江苏电子信息职业学院 | Amortization wheel hub convenient to adjust dynamic balance |
| CN116219805A (en) * | 2023-01-10 | 2023-06-06 | 株洲时代新材料科技股份有限公司 | Dynamic vibration absorbing damper |
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| US4364594A (en) * | 1978-08-10 | 1982-12-21 | Fried. Krupp Huttenwerke Ag | Railway wheel vibration damping device |
| US4496183A (en) * | 1980-09-04 | 1985-01-29 | Krupp Stahl Aktiengesellschaft | Vibration-damped wheel for rail vehicles |
| DE19542342A1 (en) * | 1995-11-14 | 1997-05-15 | Gutehoffnungshuette Radsatz | Noise damping rings for railway wheel |
| CN101163423A (en) * | 2005-04-21 | 2008-04-16 | 卡平制造公司 | Furniture glide with plow base |
| KR20130030557A (en) * | 2011-09-19 | 2013-03-27 | 한국타이어 주식회사 | Wheel for noise reduction of vehicle |
| CA2952675A1 (en) * | 2013-06-27 | 2015-12-23 | Qingjun ZHU | Vehicle wheel noise-reducing damper |
| CN106004229A (en) * | 2016-07-19 | 2016-10-12 | 哈尔滨通达工业环保自动化有限公司 | Multilayered damper for wheel and damping method |
| CN207291491U (en) * | 2017-10-20 | 2018-05-01 | 株洲时代新材料科技股份有限公司 | A kind of dynamic absorber formula wheel noise reduction block |
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