CN1775604A - Surface damp treating method of vibration noise control for railway passenger train - Google Patents
Surface damp treating method of vibration noise control for railway passenger train Download PDFInfo
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- CN1775604A CN1775604A CN 200510032546 CN200510032546A CN1775604A CN 1775604 A CN1775604 A CN 1775604A CN 200510032546 CN200510032546 CN 200510032546 CN 200510032546 A CN200510032546 A CN 200510032546A CN 1775604 A CN1775604 A CN 1775604A
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Abstract
The invention discloses a surface damping processing method for controlling the vibration noise of a passenger train, combining water damping material with damping plates to make composite damping processing on the inner surface of metallic body of the passenger train so as to realize vibration and noise reduction. It firstly sprays water damping material with dry film thickness of 3-4 mm on the inner surface of the metallic body to make free damping processing. Before spraying the damping material, it needs to make antirust processing on the metal surface, for example, spraying antirust paint base with dry film thickness of 20-30 mum, and pastes damping plates with a thickness of 2.5-3.5 mm on the metal floor coated with water damping material and the metal side wall 300-500 mm apart from the metal floor. The selection of the water damping material and the damping plates should consider user environmental temperature, body vibration frequency character and noise frequency character of the passenger train, making them posses the maximum damping factor and maximum sound isolating quantity in the operating temperature range of the passenger train.
Description
Technical field
The present invention relates to the control method of railway passenger train vibration noise, refer in particular to a kind of surface damp treating method that is used for the railway passenger train Noise and Vibration Control.Specifically be to utilize high-performance damping material that railway passenger train metal car body inside face is carried out surface damp to handle, improve the damping of railway passenger train body construction, suppress vibration, cut off noise transmission, reduce railway passenger train internal vibration noisiness, improve railway passenger train in-to-in comfort level and quiet degree.
Background technology
In order to satisfy the needs of the efficient fast pace life of people, railway traffic is constantly raising speed.Along with the raising of train speed, the trend of the oriented lightweight development of railway vehicle.But the raising of speed and the lightweight of car body often cause car body insufficient rigidity, damping and sound insulation property poor, and the raising of car internal vibration, noise descends ride comfort.Uninterrupted high vibration strong noise can be brought feeling of stress, sense of fatigue to human body, even causes irremediable consequences such as injured nerve and hearing.Therefore, reduction internal car noise, raising ride quality become the difficult problem that the vehicle designers emphasis will solve.
Noise control can be started with from noise source, noise transmission approach and noise recipient three aspects.Noise control technique is mainly based on the acoustics control method of noise, and concrete technological approaches generally comprises the isolation, damping vibration attenuation of sound insulation processing, absorbing treatment, vibration etc.The mechanism of these Noise and Vibration Control methods is, mutual action consumed energy by vibration wave and damping damping material or damping treatment structure, noise sound wave and acoustical material or acoustic construction, thereby reach the purpose of vibration and noise reducing, belong to the control method of passive type, be also referred to as Passive Shape Control.
It is the raising structural damping that surface damp is handled, suppress resonance, improve one of effective ways of structure anti-vibration reducing noise performance.This technology has been widely used in industries such as space flight and aviation, auto-industry, industry light industry textile industry.Surface damp is handled and to be mainly used in by bending that vibration is main little member or the thin-walled parts of thickness, pastes the visoelasticity high damping material at member or body structure surface, provides strength and stiffness by member or system, provides damping by the visoelasticity high damping material.Common damping structure form has two kinds: free layer damping treatment and restraint layer damping treatment.
1) free layer damping treatment.The free layer damping treatment is directly to paste viscoelastic damping material on the basic design surface, and energy of vibration is converted into heat energy, thereby plays the effect of vibration damping.The damping treatment construction of free layer damping treatment structure is simple and convenient, but damping is restricted.
2) constrained layer damping is handled.It is after the substrate surface of structure pastes damping layer that constrained layer damping is handled, and sticks the bigger restraining plate of a stiffness layer again.When structural vibration, the damping material layer not only bears the Compression and Expansion distortion, also bears shear deformation simultaneously, and they can both play the power consumption effect.Constrained layer damping is handled bigger structure dissipation factor generally can be provided, but its construction and making have relatively high expectations, and price is also expensive.
The application surface damping treatment still belongs to the exploratory stage on railway passenger train, because railway passenger train belongs to a kind of vibration and the bigger running gear of noise ratio, how on railway passenger train, to utilize surface damp treating method to carry out vibration damping and noise reduction still belongs to a difficult problem, be worth our further development research.
Summary of the invention
Purpose of the present invention mainly is vibration, the noisiness that is produced in the passenger train operational process, and according to the architectural feature of railway passenger train, propose the surface damp treating method of railway passenger train, what comprise damping material selects, pastes determining of mode and position for use.By on the suitable position of passenger vehicle vehicle metal car body, attaching the damping capacity that high damping material improves car body.When vehicle when operational process is out of shape because of vibration, high damping material is converted into heat energy to the mechanical energy of vibration and dissipates, on the other hand, when the structure radiated noise that vibration produces incides the damping material surface, a part reflects back, another part changes into other energy dissipation and falls, thereby reaches the purpose that reduces railway passenger train internal vibration noise.
Technical scheme of the present invention is:
Adopting the combination of aqueous damping coating and damping sheet material that the metal car body inside face of railway passenger train is carried out composite damping handles and realizes vibration damping and noise reduction.
The chemical matrix of described aqueous damping coating is an aqueous synthetic-resin;
Described damping panel can be asphaltic base damping panel or rubber-based damping panel.
Be the aqueous damping coating of 3～4mm at first, handle car body is carried out free damping at vehicle metal car body total inner surface (comprising metal floor, side wall and roof) spraying build.Before the spraying damping paint, need carry out anti-rust treatment to the metal surface, be the rust proofing primer of 2030 μ m as the spraying build.
Be that to attach thickness on the side wall metal of 300～500mm be the damping panel of 2.5～3.5mm then at the metal floor that has sprayed aqueous damping coating and apart from the metal floor height.The selecting for use of aqueous damping coating and damping panel material should be considered environment for use temperature, body oscillating frequency-response data and the noise frequency characteristic of passenger car, makes aqueous damping coating and damping panel have maximum damping factor and maximum noise insulation factor in passenger vehicle vehicle working temperature range.
The present invention adopts high-performance damping material that the advantage that railway passenger train metal car body carries out the surface damp processing is: because the vibration that vehicle operating produces mainly reaches car body floor by the bogie of car, on the whole locomotive body structure, propagate then, produce the structure radiated noise simultaneously.The present invention handles the damping capacity that the formation compound damping structure improves body construction by with high-performance damping material the vehicle metal shell being carried out surface damp.When body oscillating, the damping material that pastes on the surface produces the Compression and Expansion distortion, and energy of vibration is converted into heat energy, thereby has played the effect that reduces body oscillating.Correspondingly, damping also has tangible effect to the sound insulation property that improves material, and is particularly very effective on resonance that suppresses member and coincidence effect sound insulation low ebb.Because the vibration of car body mainly reaches car body floor by bogie truck, so the damping to car body floor is main, the present invention is on car body metal floor and the side wall metal near metal floor, on the basis of spraying High Performance damping paint, increase and attach damping, the good damping panel of sound insulation property, can suppress the vibration of car body effectively, reduce the vibratory magnitude of vehicle interior, correspondingly also reduce the structure radiated noise that vibration causes.On the other hand, damping paint and damping panel all have good sound insulation property, and they can increase the ability that car body cuts off the past vehicle interior propagation of outside big noise such as wheel-rail noise, reduce passenger vehicle vehicle in-to-in noise level.So, the present invention proposes to attach damping, the good damping panel of sound insulation property at passenger car body inside face spraying High Performance damping paint with at metal floor and near on the side wall metal of metal floor, the vibration and noise reducing effect that suppresses vibration and cut off noise be can play simultaneously, thereby the comfort level and the quiet degree of passenger vehicle vehicle improved.
Description of drawings
Fig. 1 adopts railroad car bodywork schematic cross section of the present invention.
Fig. 2 is the enlarged drawing of Fig. 1 corrugated bar floor I.
1. metal car bodies among the figure, 2. aqueous damping coating, 3. damping panel, 4. sponge strip, 5. glass silk flosssilk wadding, 6. wood covering.
The specific embodiment
Accompanying drawing has provided one embodiment of the present of invention, and the present invention is further detailed explanation below in conjunction with accompanying drawing and embodiment.
Be the aqueous damping coating 2 of 3～4mm at first, handle car body is carried out free damping at vehicle metal car body 1 total inner surface (comprising metal floor, side wall and roof) spraying build.Before the spraying damping paint, need carry out anti-rust treatment to the metal surface, be the rust proofing primer of 20-30 μ m as the spraying build.
Be that to attach thickness on the side wall metal of 300～500mm be the damping panel 3 of 2.5～3.5mm then at the metal floor that has sprayed aqueous damping coating 2 and apart from the metal floor height.The selecting for use of aqueous damping coating 2 and damping panel 3 materials should be considered environment for use temperature, body oscillating frequency-response data and the noise frequency characteristic of passenger car, makes aqueous damping coating and damping panel have maximum damping factor and maximum noise insulation factor in passenger vehicle vehicle working temperature range.
Construction method is:
Select aqueous damping coating and asphaltic base damping panel material.The chemical matrix of aqueous damping coating is an aqueous synthetic-resin.The chemical matrix of asphaltic base damping panel material is a modified bitumen.Aqueous damping coating and asphaltic base damping panel are followed these steps to the railway passenger train metal shell is carried out damping treatment:
The first step, to the rust cleaning of metal car body 1 total inner surface, oil removing and rust prevention by applying liquid material priming paint carry out anticorrosion, anti-rust treatment according to a conventional method, and the rust proofing primer build is 20～30 μ m.Guarantee priming paint surface clean, smooth, enter next step construction behind the primer film all dry;
In second step, the metal car body 1 total inner surface spraying aqueous damping coating 2 behind anticorrosion, anti-rust treatment: with plunger pump airless spraying equipment spraying aqueous damping coating 2, the control gross thickness is 3～4mm (dry film);
The 3rd step, again in the metal car body 1 of spraying aqueous damping coating 2, treat aqueous damping coating 2 all dries after, along the corrugated floor inside face with paste the asphaltic base damping panel 3 of thickness 3mm apart from the side wall inside face dress of corrugated floor 500mm height.In order to strengthen asphaltic base damping panel 3 in aqueous damping coating 2 lip-deep adhesivenesses, can on aqueous damping coating 2 surfaces, brush one deck High Performance adhesion agent, refill and paste asphaltic base damping panel 3.
Can enter other operation routinely afterwards, as laying sponge strip 4, glass silk flosssilk wadding 5 and wood covering 6 etc.
Claims (5)
1, the surface damp treating method of railway passenger train Noise and Vibration Control is characterized in that: be the aqueous damping coating (2) of 3～4mm at vehicle metal car body (1) total inner surface spraying build at first, handle car body is carried out free damping; Be that to attach thickness on the side wall metal of 300～500mm be the damping panel (3) of 2.5～3.5mm then at the metal floor that has sprayed aqueous damping coating (2) and apart from the metal floor height.
2, the surface damp treating method of railway passenger train Noise and Vibration Control as claimed in claim 1 is characterized in that: the chemical matrix of described aqueous damping coating is an aqueous synthetic-resin.
3, the surface damp treating method of railway passenger train Noise and Vibration Control as claimed in claim 1 is characterized in that: described damping panel can be asphaltic base damping panel or rubber-based damping panel.
4, the surface damp treating method of railway passenger train Noise and Vibration Control as claimed in claim 1, it is characterized in that: the selecting for use of aqueous damping coating (2) and damping panel (3) material should be considered environment for use temperature, body oscillating frequency-response data and the noise frequency characteristic of passenger car, makes aqueous damping coating and damping panel have maximum damping factor and maximum noise insulation factor in passenger vehicle vehicle working temperature range.
5, the surface damp treating method of railway passenger train Noise and Vibration Control as claimed in claim 1 is characterized in that: before the spraying damping paint, anti-rust treatment is carried out in the metal surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510032546 CN1775604A (en) | 2005-12-14 | 2005-12-14 | Surface damp treating method of vibration noise control for railway passenger train |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510032546 CN1775604A (en) | 2005-12-14 | 2005-12-14 | Surface damp treating method of vibration noise control for railway passenger train |
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| CN1775604A true CN1775604A (en) | 2006-05-24 |
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| CN 200510032546 Pending CN1775604A (en) | 2005-12-14 | 2005-12-14 | Surface damp treating method of vibration noise control for railway passenger train |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101089585B (en) * | 2006-06-14 | 2011-04-13 | 西门子公司 | Rail vehicle with ballast strike detection means |
| CN102702900A (en) * | 2012-05-17 | 2012-10-03 | 青岛爱尔家佳新材料有限公司 | Novel water-based damping sound-absorbing paint and preparation method thereof |
| CN104889793A (en) * | 2015-06-08 | 2015-09-09 | 广东工业大学 | Damping spring sheet type rigidity frequency adjustable macro-micro integrated composite platform |
| CN105365835A (en) * | 2015-11-25 | 2016-03-02 | 长春轨道客车股份有限公司 | Novel high-speed train shock-absorption and noise-reduction floor structure |
| CN106758899A (en) * | 2016-12-27 | 2017-05-31 | 中国铁道科学研究院节能环保劳卫研究所 | The bottom decoupler of railway metal sound barrier |
-
2005
- 2005-12-14 CN CN 200510032546 patent/CN1775604A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101089585B (en) * | 2006-06-14 | 2011-04-13 | 西门子公司 | Rail vehicle with ballast strike detection means |
| CN102702900A (en) * | 2012-05-17 | 2012-10-03 | 青岛爱尔家佳新材料有限公司 | Novel water-based damping sound-absorbing paint and preparation method thereof |
| CN104889793A (en) * | 2015-06-08 | 2015-09-09 | 广东工业大学 | Damping spring sheet type rigidity frequency adjustable macro-micro integrated composite platform |
| CN105365835A (en) * | 2015-11-25 | 2016-03-02 | 长春轨道客车股份有限公司 | Novel high-speed train shock-absorption and noise-reduction floor structure |
| CN106758899A (en) * | 2016-12-27 | 2017-05-31 | 中国铁道科学研究院节能环保劳卫研究所 | The bottom decoupler of railway metal sound barrier |
| CN106758899B (en) * | 2016-12-27 | 2022-09-20 | 中国铁道科学研究院节能环保劳卫研究所 | Lower decoupler of railway metal sound barrier |
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