CN102304881B - Steel rail and damping absorber thereof - Google Patents
Steel rail and damping absorber thereof Download PDFInfo
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- CN102304881B CN102304881B CN201110156390.8A CN201110156390A CN102304881B CN 102304881 B CN102304881 B CN 102304881B CN 201110156390 A CN201110156390 A CN 201110156390A CN 102304881 B CN102304881 B CN 102304881B
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- damping
- rail
- layer
- shock absorber
- flaggy
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Abstract
The invention discloses a steel rail and a damping absorber thereof. The disclosed damping absorber comprises a damping layer and a metal constraining board layer, as well as a magnetic material layer, wherein the damping layer, the metal constraining board layer and the magnetic material layer are laid at the rail waist of the steel rail in sequence from inside to the outside; since magnetic material layer has higher specific gravity and vibration-absorbing mass effect, the damping absorber has more obvious vibration absorbing effect; meanwhile, since the damping layer and the metal constraining board layer are closely stuck on the rail waist more reliably under the action of the magnetic attraction between the magnetic material layer and the rail body, the ineffective stickiness caused by rust and flaw removal can be effectively prevented in construction and and the potential safety hazard of falling off of the damping absorber can be eliminated, and therefore the reliability of the damping absorber is improved effectively and the denoising effect of the steel rail is increased.
Description
Technical field
The present invention relates to antivibration area, particularly relate to a kind of damping shock absorber for rail.In addition, the invention still further relates to a kind of rail comprising above-mentioned damping shock absorber.
Background technology
Noise is the pollution sources of environment, very big to the body harm of people, and each state is all in the dynamics strengthening noise control.At present, train constantly raises speed, and the wheel-rail noise caused along with the raising of train speed is in rising trend.One of main sound source when wheel-rail noise is train driving, and rail vibration is the main cause producing wheel-rail noise.
Acoustician both domestic and external and scientific and technical personnel are the pollution alleviating wheel-rail noise, propose and adopt heavy rail, superlong jointless line, regularly rail grinding, adopt wheel of eliminating the noise, build sound barrier, adopt the control measures such as damping steel rail.These measures serve positive role to alleviating wheel-rail noise, and especially China Patent No. is that the patented technology of ZL02240002.8 provides a kind of steel rail with low noise.This patented technology adopts multilayer damping-constraining damascene to significantly reduce wheel-rail noise in web of the rail both sides, it is the high damping concretes that Chinese Railway is uniquely also ratified by the Ministry of Railways and Railway Bureau's technical appraisement to apply on railway operation circuit, in the past few years apply within the scope of china railway, achieve good noise reduction.
Find after practice in a few years, there are some aspects needing to improve in this technology, be mainly reflected in when damping structure is bonded in the web of the rail, because rail exists rust cleaning flaw, the bond strength of indivedual damping structure and rail is affected, even there is the phenomenon that indivedual damping structure bonding is not up to standard.
Therefore, that how to improve damping structure installs availability ratio, and ensureing the noise reduction of damping shock absorber, is the current technical issues that need to address of those skilled in the art.
Summary of the invention
The object of this invention is to provide a kind of damping shock absorber for rail, this damping shock absorber to install availability ratio secure, the impact by rail rust removal is less, and noise reduction is remarkable.Another object of the present invention is to provide a kind of rail comprising above-mentioned damping shock absorber, and the noise of this rail is obviously reduced.
For achieving the above object, the invention provides a kind of damping shock absorber for rail, comprise damping layer and metal restriction flaggy, also comprise magnetic material layer, described damping layer, described metal restriction flaggy and described magnetic material layer are layed in the web of the rail of rail from inside to outside successively.
Preferably, described damping layer comprises the first damping layer and the second damping layer, described metal restriction flaggy comprises the first metal restriction flaggy and the second metal restriction flaggy, and described first damping layer, described first metal restriction flaggy, described magnetic material layer, described second damping layer and described second metal restriction flaggy are laid from inside to outside successively.
Preferably, the rubber cover be located at outside described second metal restriction flaggy is also comprised.
Preferably, described first damping layer and described second damping layer have different frequency characteristics.
Preferably, described magnetic material layer is specially magnetically damped material layer.
The present invention also provides a kind of rail, the damping shock absorber comprising rail body and be fixedly connected with described rail body, and described damping shock absorber is the damping shock absorber as described in above-mentioned any one.
Preferably, described damping shock absorber uses in pairs, is fixedly connected on the both sides of the described web of the rail symmetrically.
Preferably, the laying length of described damping shock absorber accounts for the 50%-75% intending noise reduction total line length.
Damping shock absorber provided by the present invention, the web of the rail place between the adjacent sleeper being installed on rail.This damping shock absorber comprises damping layer, metal restriction flaggy and magnetic material layer, and described damping layer, described metal restriction flaggy and described magnetic material layer are laid from inside to outside successively.Damping layer has higher fissipation factor relative to steel, can play the effect of Conversion of Energy fully; Stretching impedance bundary can be converted into shearing damp process by metal restriction flaggy, and under identical damping material condition, shearing damp process is more effective than stretching impedance bundary; Magnetic material layer, owing to having larger proportion, has the mass effect of vibration damping, makes the effectiveness in vibration suppression of damping shock absorber more obvious; Magnetic attracting force simultaneously between magnetic material layer and rail body, damping layer can be made, metal restriction flaggy is closely attached to web of the rail place more reliably, effectively prevent from pasting cracking due to rust cleaning flaw during construction, eliminate the potential safety hazard that damping shock absorber comes off, thus effectively improve the installation reliability of damping shock absorber, ensure the noise reduction of rail.
In a preferred embodiment, damping shock absorber provided by the present invention also comprises the rubber cover be located at outside described second metal restriction flaggy.Rubber cover has anticorrosion and ageing-resistant performance preferably, can prevent the corrosion of metal restriction flaggy, and other hazardous substances also can be prevented the bad damage of damping shock absorber internal construction, thus extends the application life of damping shock absorber.
In another preferred embodiment, described first damping layer and described second damping layer have different frequency characteristics, make damping shock absorber under different vibration frequency operating modes, still effectively can play the effect of vibration damping, realize effective noise reduction, and then effectively improve the applicability of damping shock absorber.
On the basis providing above-mentioned damping shock absorber, the present invention also provides a kind of rail comprising above-mentioned damping vibration attenuation; Because damping vibration attenuation has above-mentioned technique effect, the rail with this damping vibration attenuation also has corresponding technique effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of rail provided by the present invention and the first detailed description of the invention of damping shock absorber thereof;
Fig. 2 is the structural representation of rail provided by the present invention and damping shock absorber the second detailed description of the invention thereof;
Fig. 3 is the partial enlarged drawing of part A in Fig. 2.
Detailed description of the invention
Core of the present invention is to provide a kind of damping shock absorber for rail, this damping shock absorber to install availability ratio secure, the impact by rust cleaning construction is less, and noise reduction is remarkable.Another core of the present invention is to provide a kind of rail comprising above-mentioned damping shock absorber, and the noise of this rail is obviously reduced.
The nouns of locality such as the innner and outer are herein with the rail body of rail for benchmark defines, and being inner near rail external surface, is outward away from rail external surface.Should be appreciated that the adopted noun of locality should not limit the protection domain of this patent herein.
In order to make those skilled in the art person understand the present invention program better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 1, Fig. 1 is the structural representation of rail provided by the present invention and the first detailed description of the invention of damping shock absorber thereof.
Damping shock absorber provided by the present invention, the web of the rail place between the adjacent sleeper being installed on rail.This damping shock absorber 2 comprises damping layer 21, metal restriction flaggy 22 and magnetic material layer 23, and damping layer 21, metal restriction flaggy 22 and magnetic material layer 23 are laid from inside to outside successively.Damping layer 21 has higher fissipation factor relative to steel, can play the effect of Conversion of Energy fully; Stretching impedance bundary can be converted into shearing damp process by metal restriction flaggy 22, and under the condition that material is identical, shearing damp process is more effective than stretching impedance bundary; Magnetic material layer 23, owing to having larger proportion, has the mass effect of vibration damping, makes the effectiveness in vibration suppression of damping shock absorber 2 more obvious; Magnetic attracting force simultaneously between magnetic material layer 23 and rail body 1, damping layer 21 can be made, metal restriction flaggy 22 is closely attached to web of the rail place more reliably, effectively prevent from pasting cracking due to rust cleaning flaw during construction, eliminate the potential safety hazard that damping shock absorber 2 comes off, thus effectively improve the reliability of damping shock absorber 2, improve the noise reduction of rail.
Please refer to Fig. 2 and Fig. 3, Fig. 2 is the structural representation of rail provided by the present invention and damping shock absorber the second detailed description of the invention thereof; Fig. 3 is the partial enlarged drawing of part A in Fig. 2.
In the embodiment that the second is concrete, the damping layer 21 of damping shock absorber 2 provided by the present invention can comprise the first damping layer 211 and the second damping layer 212, metal restriction flaggy 22 comprises the first metal restriction flaggy 221 and the second metal restriction flaggy 222, first damping layer 211, first metal restriction flaggy 221, magnetic material layer 23, second damping layer 212 and the second metal restriction flaggy 222 are laid from inside to outside successively.Magnetic material layer 23 both attracted each other with rail, and attract each other with the second metal restriction flaggy 222 in outside again, thus damping shock absorber 2 is better fixed together, difficult drop-off, guarantees the reliability of damping shock absorber 2.Meanwhile, two damping layer structures of the first damping layer 211 and the second damping layer 212, first metal restriction flaggy 221 and the formation of the second metal restriction flaggy 222, effectively can strengthen the effectiveness in vibration suppression of damping shock absorber, improve the anti-acoustic capability of rail.
Obviously, above-mentioned two damping layers 21 structure is a kind of detailed description of the invention of damping shock absorber 2 provided by the present invention, and its damping layer 21 can be one deck (as shown in Figure 1), can be two-layer, also can be multilayer, so that the noise reduction demand of rail can be met for basic principle.In like manner, metal restriction flaggy 22 and magnetic material layer 23 can be also two-layer or multilayers, will not enumerate at this.
Further, damping shock absorber 2 provided by the present invention can also comprise the rubber cover 24 be located at outside the second metal restriction flaggy 222.Rubber cover 24 has anticorrosion and ageing-resistant performance preferably; therefore; rubber cover 24 can prevent metal restriction flaggy 22 corrosion, and other hazardous substances also can be prevented the bad damage of damping shock absorber 2 internal construction, thus extends the application life of damping shock absorber 2.
Particularly, first damping layer 211 and the second damping layer 212 can have different frequency characteristics, make damping shock absorber 2 under different vibration frequency operating modes, still effectively can play the effect of vibration damping, realize effective noise reduction, and then effectively improve the applicability of damping shock absorber 2.
In a preferred embodiment, above-mentioned magnetic material layer 23 is specifically as follows magnetically damped material layer, namely this magnetic material layer 23 is except having magnetic property and producing except magnetive attraction between rail and metal restriction flaggy 22, effectively can also increase the damping of damping shock absorber 2, more effectively control the vibration of rail, reach the object strengthening noise reduction.
Except above-mentioned damping shock absorber 2, the present invention also provides a kind of rail comprising above-mentioned damping shock absorber 2, and damping shock absorber 2 is fixedly connected with the rail body 1 of rail, is installed on the web of the rail place between adjacent sleeper.The structure of other each several parts of rail please refer to prior art, repeats no more herein.
In a kind of concrete embodiment, damping shock absorber 2 provided by the present invention uses in pairs in the both sides of rail, and is fixedly connected on the both sides of the web of the rail symmetrically.
Further, according to the different demand of noise reduction and the difference of investment environment, the laying length of damping shock absorber 2 provided by the present invention can account for the 50%-75% intending noise reduction total line length, reduces investment as far as possible and the effect meeting noise reduction demand to reach.
Above rail provided by the present invention and damping shock absorber thereof are described in detail.Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (5)
1., for a damping shock absorber for rail, comprise damping layer and metal restriction flaggy, it is characterized in that, also comprise magnetic material layer; Described damping layer comprises the first damping layer and the second damping layer, described metal restriction flaggy comprises the first metal restriction flaggy and the second metal restriction flaggy, and described first damping layer, described first metal restriction flaggy, described magnetic material layer, described second damping layer and described second metal restriction flaggy are layed in the web of the rail of rail from inside to outside successively;
Also comprise the rubber cover be located at outside described second metal restriction flaggy;
Described first damping layer and described second damping layer have different frequency characteristics.
2. the damping shock absorber for rail according to claim 1, is characterized in that, described magnetic material layer is specially magnetically damped material layer.
3. a rail, the damping shock absorber comprising rail body and be fixedly connected with described rail body, is characterized in that, described damping shock absorber is damping shock absorber as claimed in claim 1 or 2.
4. rail according to claim 3, is characterized in that, described damping shock absorber uses in pairs, is fixedly connected on the both sides of the described web of the rail symmetrically.
5. rail according to claim 4, is characterized in that, the laying length of described damping shock absorber accounts for the 50%-75% intending noise reduction total line length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110156390.8A CN102304881B (en) | 2011-06-10 | 2011-06-10 | Steel rail and damping absorber thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110156390.8A CN102304881B (en) | 2011-06-10 | 2011-06-10 | Steel rail and damping absorber thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102304881A CN102304881A (en) | 2012-01-04 |
| CN102304881B true CN102304881B (en) | 2015-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110156390.8A Expired - Fee Related CN102304881B (en) | 2011-06-10 | 2011-06-10 | Steel rail and damping absorber thereof |
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| Country | Link |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498392B (en) * | 2013-09-11 | 2016-01-27 | 华东交通大学 | A kind of damping steel rail |
| FI124851B (en) * | 2013-10-30 | 2015-02-13 | Vr Track Oy | Arrangements to be arranged on rail traffic routes for the collection of metal dust |
| CN108708231B (en) * | 2018-05-31 | 2019-11-05 | 上海工程技术大学 | A kind of built-in metal oscillator vibration and noise reducing dynamic vibration absorber structure of rail |
| CN111608031A (en) * | 2020-05-19 | 2020-09-01 | 中铁六局集团有限公司 | Construction method for installing noise-reduction steel rail damping plate of track |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2555275Y (en) * | 2002-07-05 | 2003-06-11 | 北京铁路局北京科学技术研究所 | Low noise steel rail |
| CN1807756A (en) * | 2006-02-16 | 2006-07-26 | 上海交通大学 | Dynamic vibration-absorbing multilayer damping-constraining steel rail silencer |
| CN101413230A (en) * | 2008-10-14 | 2009-04-22 | 中国船舶重工股份有限公司洛阳分公司 | Steel rail vibration damping noise reduction method for self-absorption composite magnetic damping plate |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9719864D0 (en) * | 1997-09-19 | 1997-11-19 | Univ Southampton | Rail damper |
| GB0613080D0 (en) * | 2006-07-03 | 2006-08-09 | Corus Uk Ltd | Rail dampers |
| CN1928235B (en) * | 2006-09-21 | 2011-02-09 | 尹学军 | Damper rail |
-
2011
- 2011-06-10 CN CN201110156390.8A patent/CN102304881B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2555275Y (en) * | 2002-07-05 | 2003-06-11 | 北京铁路局北京科学技术研究所 | Low noise steel rail |
| CN1807756A (en) * | 2006-02-16 | 2006-07-26 | 上海交通大学 | Dynamic vibration-absorbing multilayer damping-constraining steel rail silencer |
| CN101413230A (en) * | 2008-10-14 | 2009-04-22 | 中国船舶重工股份有限公司洛阳分公司 | Steel rail vibration damping noise reduction method for self-absorption composite magnetic damping plate |
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| Publication number | Publication date |
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| CN102304881A (en) | 2012-01-04 |
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