CN1597406A - Railroad stock vibration attenuation noise lowering method and material - Google Patents
Railroad stock vibration attenuation noise lowering method and material Download PDFInfo
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- CN1597406A CN1597406A CN 200410046624 CN200410046624A CN1597406A CN 1597406 A CN1597406 A CN 1597406A CN 200410046624 CN200410046624 CN 200410046624 CN 200410046624 A CN200410046624 A CN 200410046624A CN 1597406 A CN1597406 A CN 1597406A
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Abstract
This invention relates to a method and a material for reducing noises caused by stock. A layer of asphalt-based composite bumping material is used to absorb and isolate noise made by stock. It is laid on a top surface of an Al alloy corrugated plate, whith is arranged on the rotating frame, with glass fibers filled in its grooves. Also, it can be attached to the walls of vehicels, or both of them are used together. The composite material consists of a polymer-modified asphalt as basic material, fillers, fire-retardant, a bumping agent, auxiliaries, and water. The material is designed according to characteristics of noises by stock that it can effectively reduce noise and has good water-and fire-resistance.
Description
Technical field
The present invention relates to be applied in the railway vehicle damping noise-reduction method of various vehicles, refer in particular to by to floor in the railway vehicle, the damping noise-reduction method of the various vehicles that sound insulation such as metope is handled; The invention still further relates to a kind of railway vehicle damping noise reducing damping material, be a kind of be the NEW TYPE OF COMPOSITE damping material of matrix with pitch, it can reduce the noise of vehicle interior effectively, and has certain damping damping.
Technical background
Along with after China's passenger train repeatedly raises speed, the speed of a motor vehicle is than be greatly improved in the past (running velocity of part passenger train meets or exceeds 160km/h at present).Can produce vibration and noise during train operation inevitably, vibration and noise reach certain intensity will cause to a certain degree infringement to operating personal, passenger and pedestrian on every side, resident etc.Uninterrupted high vibration, strong noise can be brought feeling of stress, sense of fatigue to human body, even cause irremediable consequences such as injured nerve, hearing.Along with the continuous development of China's economic construction, the lasting raising of people's living standard and the progressively enhancing of environmental consciousness, people no longer only rest on pursuit safety, high-speed to the demand of track traffic, more can pursue the high degree of comfort of taking in the car.Therefore, track traffic is comprehensively after the speed-raising, and the vibration noise that noise sources such as the wheel-rail noise when it is run at high speed, vehicle noise and aerodynamic noise produce becomes very outstanding to the influence of vehicle environmental.Can the vibration noise problem becomes one of maximum contradiction of high-speed rail transportation, vibration and noise is controlled in the bottom line that meets relative national standards, is whether high-speed rail transportation obtains a popular key factor of accepting and approving.Noise control has been mentioned on the agenda.Noise control is control of branch noise source and noise transmission approach control (claiming passive noise control again) mainly, and wherein passive noise control comprises sound absorption, sound insulation, noise elimination, vibration isolation and damping vibration attenuation technology.At present, the damping material technology has also obtained people's attention day by day in the application in vibration and noise reducing field, mainly is divided into damping, sound insulation and sound absorption etc.But existing vibration damping, the noise reduction that still can not be useful under the high-speed track condition of service by the retrieval to domestic and international patent documentation, still finds no suitable data introduction.
Summary of the invention
Purpose of the present invention mainly is at vibration of the height that produced in the track traffic high-speed cruising process and strong noise, proposes a kind of railway vehicle damping noise-reduction method of the noise emission of a kind of vibration of generation can reduce the railway vehicle operation time and vehicle interior;
Another object of the present invention mainly is to provide a kind of according to method proposed by the invention can reduce a kind of railway vehicle damping acoustic damping materials that vibration that railway vehicle when operation produce and interior vehicle noise are polluted.
The objective of the invention is to realize by following technical solution:, on the basis of understanding the railway vehicle noise frequency characteristic, and vehicle noise is adopted the method for passive noise control by the noise characteristic analysis that railway vehicle operation is produced.Passive noise control can be divided into noise isolation and two kinds of basic skills of absorption of noise.According to the propagation of noise mode, noise can be divided into: airborne noise and structure radiated noise.According to the mechanism of noise generation and the form of noise transmission, in the noise transmission process, can take measures such as sound insulation, sound absorption, noise elimination to reduce noise.Technical scheme of the present invention is exactly that the damping noise reduction layer that one deck is made of the asphaltic base composite damping material is set on some position of the car body of railway vehicle, and the noise that railway vehicle operation is produced by the asphaltic base composite damping material is isolated and absorbed the purpose that reaches vibration damping, noise reduction.The asphaltic base composite damping material can be mounted on the plane after aluminum alloy corrugated plating (or stainless steel wave card) above the bogie truck fills up the glass silk flosssilk wadding, also can be mounted on the vehicle body side body of wall of vehicle perhaps both combinations.
By experiment and studies show that, utilize modified pitch of high polymer to be base-material, add extending agent more in right amount, hinder right agent, after the various inorganic fillers such as damping agent, other auxiliary agents, become a kind of asphaltic base composite damping material that can satisfy railway vehicle vibration damping of the present invention, noise reduction purpose by adding mixing can the making of water.And, obtained the better prescription of performance ratio having carried out systematic research and The effects by kind and consumption to the various compounding ingredients of composite material.Asphaltic base damping material composition groundwork of the present invention and proportioning are as follows: (mass parts)
Modified bitumen 100
Extending agent 20-200
Hinder right agent 15-160
Damping agent 30-300
Other auxiliary agents 10-80
Modified bitumen of the present invention is a nucleus, plays a part very big to the overall performance of material.Modified bitumen can obtain by the SBR modification.SBR is industrialized the earliest a kind of neoprene, and it is to be monomer with butadidenne and styrene, the superpolymer elastomer that obtains through catalyzed copolymerization in emulsion or solution.The macromolecular macroscopic view of dissimilar SBs, micromechanism are different, and the performance of buna-S is subjected to the influence of these structures.Big molecule macro-structure parameter comprises: monomer ratio, mean molecular weight, molecular weight distribution, the linearity of molecular structure or non-linear, gel content etc.Micromechanism mainly comprises: cis in the butadidenne segment-1,4, anti-form-1,4 and 1, the ratio of 2-structure, the distribution of styrene, butadiene unit etc.Buna-S is the same with other general purpose rubber, is a kind of undersaturated hydro carbons poly-mer, and solubility parameter is 8.4 (J/cm3) 1/2 approximately, can be dissolved in the close varsol of most of solubility parameter.In addition, chemical crosslinking can improve the mutual action between the SBR molecule, crosslinking points is incorporated in the SBR modified bitumen system, help big intermolecular physics contact and become chemical bond, thereby significantly reduce the permanent deformation of rubber, strengthened the constraint of SBR, thereby reached the purpose of improving the pitch high temperature resistance pitch.The used modified bitumen of the present invention also can come modification to obtain by SBS.
The used extending agent of the present invention can be selected inorganic matters such as calcium carbonate, barium sulfate, kaolin, diatom earth for use, also can adopt the mode of multiple and usefulness.After the adding system was filled, these inorganic fillers can be good at being filled in the gap structure between the macromolecular chain, play good filling effect, can also guarantee the dimensional stability of goods, and can reduce production costs greatly.
The used fire retardant of the present invention can be aluminium hydroxide, magnesium hydroxide etc., owing to itself contain the crystal water of some in their molecular structures, can decomposite hydrone during burning, thereby reach fire-retardant purpose.
The used damping agent of the present invention can be a sericite in powder, mainly plays shock damping action; Mica is the general name of mica family mineral, is the aluminosilicate that contains compositions such as potassium, magnesium, iron, lithium, fluorine.Sericite wherein is superfine lepidiod muscovite, and the chemical composition molecular formula of sericite is KAl2[Si3AlO10] (OH) 2, wherein potassium ion can part by replacements such as sodium, rubidium, caesium, barium, hydroxide ion can part be replaced by fluorine ion.It has distinctive schistose texture, and bigger radius-thickness ratio is arranged, and the surface active property height, can combine with organic molecule is good, can play good reinforcement and damping when filling in high molecular polymer.
Other auxiliary agent that the present invention added mainly is in order to improve processing technology, adds a certain amount of french talc and the water roll banding problem can solve calendering formation the time, and is convenient to moulding.
The preparation method of the asphaltic base damping material that the present invention developed is:
The first step: the method according to routine adopts the SBR that is mixed with cross-linking system to make the modified bitumen base-material.Can proportionally load weighted pitch be joined in the reactor of controllable temperature, subsidiary mixer and heat, heating and temperature control is between 120-160 ℃, after pitch is softening fully, begin to stir slowly (the about 300rpm of stirring rate), when asphalt temperature reaches more than 120 ℃, load weighted modifier (high molecular polymer) progressively joins in the pitch in proportion, adjusting stirring rate simultaneously (slowly accelerates, accelerate to 1200rpm), general mixing time is 30-60 minute.Stop heating and stirring then, and take out modified bitumen, cool off standby.
Second step: according to proportioning that modified bitumen and other inorganic fillings weighings is good, in kneader, carry out mixing.At this moment, can add an amount of water (ratio is about 1: 20).
The 3rd step: after treating that inorganic filler evenly mixes, can be on three rollers or four-roll calender the moulding slice, the concrete specification of sheet material (comprising thickness, shape etc.) is decided according to operating needs.
At present, the equipment of modified bitumen sheet material industrialized mass production mainly is: shear mill and kneader, add three rollers or four-roll calender in the time of moulding.Shearing mill mainly is to be used for the technological process of polymer dispersed at pitch, and kneader is the operation that is used for inorganic fillings is added modified bitumen, and the technology of batch manufacturing may need be adjusted according to the particular case of equipment with top also different to some extent.
After producing the asphaltic base composite damping material according to above-mentioned technology, can stick one deck sealed plastic film at the upper surface of asphaltic base composite damping material, lower surface sticks the protective paper of one deck band pressure sensitive adhesive, promptly becomes a kind of spendable formed material.Only need material during use, will tear with the protective paper of pressure sensitive adhesive again, it is sticked on the desired position just can according to suitable size under the actual conditions cutting.
This asphaltic base composite damping material mainly is at the characteristics of the noise that is produced in the train travelling process and design-calculated can reduce the noise in the compartment significantly, and has good fastness to water and flame retardance.With according to the material of the produced asphaltic base composite damping material of the present invention as railway vehicle damping noise reduction, and by damping noise-reduction method that the present invention introduced, the novel asphalt base composite damping material that one deck can be handled railway vehicle floor, side body of wall sound insulation and noise reducing is installed on the car body of railway vehicle, just can be effectively railway vehicle be moved the noise that is produced and isolate and absorb.By the processing of reasonably selecting materials, can reduce manufacturing cost greatly simultaneously, make the present invention have practical value.
The DMTA dissipation factor test result such as the table 1 of asphaltic base damping material:
Table 1
| Frequency (Hz) | The scanning temperature (℃) | Damping factor |
| ????2 | ???0～100℃ | ???≥0.3 |
| ????10 | ???0～100℃ | ???≥0.25 |
| ????36 | ???0～100℃ | ???≥0.25 |
| ????46 | ???0～100℃ | ???≥0.25 |
Asphaltic base damping material standing-wave-tube method sound insulation test result such as table 2:
Table 2
| Frequency (Hz) | ?100 | ??125 | ??200 | ??250 | ??500 | ??800 | ??1000 | ??1250 | ??1600 |
| Noise insulation factor (dB) | ?42.0 | ??40.7 | ??35.1 | ??31.1 | ??25.0 | ??33.6 | ??37.2 | ?40.1 | ??43.4 |
Description of drawings
Fig. 1 is the structural representation of asphaltic base composite damping material of the present invention;
The embodiment that Fig. 2 uses on rolling stock for asphaltic base composite damping material of the present invention.
Among the figure: 1, sealed plastic film; 2, asphaltic base composite damping material; 3, post the protective paper of pressure sensitive adhesive; 4, the car body bogie truck of rolling stock; 5, aluminum alloy corrugated plating; 6, the side body of wall of the car body of rolling stock; 7, asphaltic base composite damping material; 8, asphaltic base composite damping material.
The specific embodiment
Below in conjunction with specific embodiment the present invention is described in further detail asphaltic base composite damping material and the using method in railway vehicle damping noise reduction thereof, yet the present invention is not limited among the following embodiment.From accompanying drawing 1 as can be seen, vehicle of the present invention has three layers with the damping acoustic damping materials, interlayer is the asphaltic base composite damping material, posts sealed plastic film 1 on asphaltic base composite damping material layer, posts the protective paper 3 of pressure sensitive adhesive at asphaltic base composite damping material layer lower surface.
Embodiment one
At first make the asphaltic base composite damping material, asphaltic base damping material composition groundwork and proportioning are as follows: (mass parts)
Modified bitumen 100
Extending agent 140
Hinder right agent 15
Damping agent 30
Other auxiliary agents 15
Wherein: extending agent is a calcium carbonate; Hindering right agent is aluminium hydroxide; Damping agent is a mica powder; Other auxiliary agents are french talc.The manufacture craft of asphaltic base damping material is:
The first step: use the SBR that is mixed with cross-linking system to make the modified bitumen base-material according to the method for routine.Can proportionally load weighted pitch be joined in the reactor of controllable temperature, subsidiary mixer and heat, heating and temperature control is between 120-160 ℃, after pitch is softening fully, begin to stir slowly, when asphalt temperature reaches more than 120 ℃, load weighted modifier (high molecular polymer) progressively joins in the pitch in proportion, adjusts stirring rate (slowly accelerating) simultaneously, and general mixing time is 30-60 minute.Stop heating and stirring then, and take out modified bitumen, cool off standby.
Second step: according to proportioning that modified bitumen and other inorganic fillings weighings is good, in kneader, carry out mixing.At this moment, can add an amount of water.
The 3rd step: after treating that inorganic filler evenly mixes, can be on three rollers or four-roll calender the moulding slice, the concrete specification of sheet material (comprising thickness, shape etc.) is decided according to operating needs.
With asphaltic base composite damping material big or small cutting asphaltic base composite damping material bottom the car body of railway vehicle of making, and the asphaltic base composite damping material is layered on the plane after aluminum alloy corrugated plating (or stainless steel wave card) above the bogie truck fills up glass silk floss, can form one deck actv. vibration damping, noise reduction asphaltic base damping bed course, can move the noise that is produced to railway vehicle effectively and carry out noise isolation and absorb the purpose that reaches vibration damping, noise reduction.
Embodiment two
At first make the asphaltic base composite damping material, asphaltic base damping material composition groundwork and proportioning are as follows: (mass parts)
Modified bitumen 100
Extending agent 55
Hinder right agent 75
Damping agent 295
Other auxiliary agents 65
Wherein: extending agent is a barium sulfate; Hindering right agent is magnesium hydroxide; Damping agent is a mica powder; Other auxiliary agents are french talc.The manufacture craft of asphaltic base damping material is the same with embodiment one.The asphaltic base damping material hardness of making in this way is higher, and the vehicle body side body of wall that is particularly suitable for railway vehicle is installed and used.Only need during application the big or small cutting asphaltic base damping material of asphaltic base damping material according to the vehicle body side body of wall of railway vehicle, the protective paper that asphaltic base damping material surface is posted pressure sensitive adhesive tears again, directly the asphaltic base damping material is attached on the vehicle body side body of wall of railway vehicle and just can forms one deck actv. damping noise reduction layer.
Embodiment three
At first make the asphaltic base composite damping material, asphaltic base damping material composition groundwork and proportioning are as follows: (mass parts)
Modified bitumen 100
Extending agent 55
Hinder right agent 150
Damping agent 295
Other auxiliary agents 65
Wherein: extending agent is a kaolin; Hindering right agent is magnesium hydroxide; Damping agent is a mica powder; Other auxiliary agents are french talc.The manufacture craft of asphaltic base damping material is the same with embodiment one.The asphaltic base damping material cost of making in this way is lower, and the ground vibration isolation that is particularly suitable for the car body of railway vehicle is used.Only need during application the ground size cutting asphaltic base damping material of asphaltic base damping material according to the car body of railway vehicle, the protective paper that asphaltic base damping material surface is posted pressure sensitive adhesive tears again, directly the asphaltic base damping material is attached on the vehicle body side body of wall of railway vehicle and just can forms one deck actv. damping noise reduction layer.
Claims (4)
1, a kind of railway vehicle damping noise-reduction method, it is characterized in that: need at the car body of railway vehicle on the position of damping noise reduction the damping noise reduction layer that one deck is made of the asphaltic base composite damping material to be set, isolate and absorb by the asphaltic base composite damping material noise that operation is produced to railway vehicle.
2, a kind of railway vehicle damping noise-reduction method as claimed in claim 1, it is characterized in that: the asphaltic base composite damping material can be mounted on the plane after aluminum alloy corrugated plating (or stainless steel wave card) above the bogie truck fills up glass silk floss, also can be mounted on the vehicle body side body of wall of vehicle perhaps both combinations.
3, the material of a kind of railway vehicle damping noise-reduction method as claimed in claim 1, it is characterized in that: asphaltic base composite damping material groundwork and proportion by weight are as follows:
Modified bitumen 100
Extending agent 20-200
Hinder right agent 30-160
Damping agent 30-300
Other auxiliary agents 10-80
The preparation method of asphaltic base damping material is:
The first step: use the SBR that is mixed with cross-linking system to make the modified bitumen base-material according to the method for routine; Can proportionally load weighted pitch be joined in the reactor of controllable temperature, subsidiary mixer and heat, heating and temperature control is between 120-160 ℃, after pitch is softening fully, begin to stir slowly, when asphalt temperature reaches more than 120 ℃, load weighted modifier progressively joins in the pitch in proportion, adjusts stirring rate simultaneously, and general mixing time is 30-60 minute.Stop heating and stirring then, and take out modified bitumen, cool off standby;
Second step: according to proportioning that modified bitumen and other inorganic fillings weighings are good, in kneader, to carry out mixingly, can add an amount of water this moment;
The 3rd step: after treating that inorganic filler evenly mixes, can be on three rollers or four-roll calender the moulding slice, the concrete specification of sheet material is decided according to operating needs.
4, the material of a kind of railway vehicle damping noise-reduction method as claimed in claim 3, it is characterized in that: modified bitumen comes modification to obtain by pitch SBR; Extending agent can be selected inorganic matters such as calcium carbonate, barium sulfate, kaolin, diatom earth for use, also can adopt the mode of multiple and usefulness; Fire retardant can be aluminium hydroxide, magnesium hydroxide etc.; Damping agent can be a mica powder, and other auxiliary agent is to add quantitative french talc and water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100466243A CN100368244C (en) | 2004-08-02 | 2004-08-02 | Railroad stock vibration attenuation noise lowering method and material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100466243A CN100368244C (en) | 2004-08-02 | 2004-08-02 | Railroad stock vibration attenuation noise lowering method and material |
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| Publication Number | Publication Date |
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| CN1597406A true CN1597406A (en) | 2005-03-23 |
| CN100368244C CN100368244C (en) | 2008-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100466243A Expired - Lifetime CN100368244C (en) | 2004-08-02 | 2004-08-02 | Railroad stock vibration attenuation noise lowering method and material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101624058B (en) * | 2008-04-02 | 2012-07-04 | 阿尔斯通运输股份有限公司 | Device for disturbing the air flow circulating beneath the chassis of a railway vehicle |
| CN109054414A (en) * | 2018-08-10 | 2018-12-21 | 东莞东交沥青有限公司 | A kind of high temperature resistant road damping modification pitch and preparation method thereof |
| CN110540382A (en) * | 2018-05-29 | 2019-12-06 | 江苏一诺路桥工程检测有限公司 | Porous asphalt concrete ballastless track acoustic board and manufacturing method thereof |
| CN112644545A (en) * | 2019-10-10 | 2021-04-13 | 中车唐山机车车辆有限公司 | Framework of bogie |
| CN112644546A (en) * | 2019-10-10 | 2021-04-13 | 中车唐山机车车辆有限公司 | Framework of bogie |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2084897U (en) * | 1991-05-04 | 1991-09-18 | 北方交通大学 | Low-noise whistle for locomotive |
| CN1068622C (en) * | 1996-12-31 | 2001-07-18 | 阴元洪 | Vehicle chassis paint and its preparing method |
| SE513102C2 (en) * | 1997-03-06 | 2000-07-10 | Zeta Innovation Hb | Ways of producing sound absorbing devices |
| FR2787801B1 (en) * | 1998-12-24 | 2001-03-23 | Soprema | SINGLE-COMPONENT RESIN COMPOSITION WITH ADHESIVE PROPERTIES, PARTICULARLY FOR THE CREATION OF WATERPROOFINGS |
| US6488755B1 (en) * | 2001-08-10 | 2002-12-03 | Conoco Inc. | Asphalt compositions containing coated carbon fiber, methods for their manufacture and use |
| CN1394911A (en) * | 2002-07-20 | 2003-02-05 | 中国石化集团巴陵石油化工有限责任公司 | Polymer compounded crosslinking modified bituminous material |
| CN1222577C (en) * | 2002-08-02 | 2005-10-12 | 大连市政设施管修处 | Modified asphalt and its preparation method |
-
2004
- 2004-08-02 CN CNB2004100466243A patent/CN100368244C/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101624058B (en) * | 2008-04-02 | 2012-07-04 | 阿尔斯通运输股份有限公司 | Device for disturbing the air flow circulating beneath the chassis of a railway vehicle |
| CN110540382A (en) * | 2018-05-29 | 2019-12-06 | 江苏一诺路桥工程检测有限公司 | Porous asphalt concrete ballastless track acoustic board and manufacturing method thereof |
| CN109054414A (en) * | 2018-08-10 | 2018-12-21 | 东莞东交沥青有限公司 | A kind of high temperature resistant road damping modification pitch and preparation method thereof |
| CN112644545A (en) * | 2019-10-10 | 2021-04-13 | 中车唐山机车车辆有限公司 | Framework of bogie |
| CN112644546A (en) * | 2019-10-10 | 2021-04-13 | 中车唐山机车车辆有限公司 | Framework of bogie |
| CN112644546B (en) * | 2019-10-10 | 2022-07-26 | 中车唐山机车车辆有限公司 | Framework of bogie |
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| Publication number | Publication date |
|---|---|
| CN100368244C (en) | 2008-02-13 |
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