CN102704354A - Steel rail vibration absorber - Google Patents
Steel rail vibration absorber Download PDFInfo
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- CN102704354A CN102704354A CN2012101848875A CN201210184887A CN102704354A CN 102704354 A CN102704354 A CN 102704354A CN 2012101848875 A CN2012101848875 A CN 2012101848875A CN 201210184887 A CN201210184887 A CN 201210184887A CN 102704354 A CN102704354 A CN 102704354A
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Abstract
The invention discloses a steel rail vibration absorber, which is arranged at the waists on both sides of a steel rail and used for absorbing rail vibration. The steel rail vibration absorber comprises an upper mass layer, an upper elastic damping layer, a lower mass layer and a lower elastic damping layer from up to down, wherein the hardness of the upper elastic damping layer is less than that of the lower elastic damping layer. According to the steel rail vibration absorber disclosed by the invention, the harness of the upper elastic damping layer is designed to be lower than that of the lower elastic damping layer, so that two types of vibration with different resonance frequency are generated under vibrational excitation by the steel rail; as the low frequency vibration is not in linear correlation with the noise and the vibration damping rate of the upper mass layer is high, the secondary noise contribution caused by the upper mass layer is low, and meanwhile, the resonance oscillation of the upper mass layer further reduces the vibration response of the steel rail. Therefore, the steel rail vibration absorber can significantly transfer, absorb and consume vibration energy of the steel rail, and causes no new noise radiation source, thereby realizing the purposes of lowering the steel rail vibration and the noise radiation at last.
Description
Technical field
The present invention relates to the bump leveller technical field, particularly a kind of rail bump leveller.
Background technology
For the urban track traffic of speed per hour below 120km/h, wheel-rail noise accounts for the main component of rail transit noise, and wheel-rail noise mainly is made up of rolling noise, impact noise and the noise that screams.Adopt elastic wheel or wheel noise reducing damping bump leveller, scream noise and wheel radiated noise basically can be controlled; Adopt the overlength gapless track, the wheel-rail impact noise is also controlled basically, thereby rolling noise becomes the main component in the wheel-rail noise.Noise is relevant in 500 ~ 2500Hz frequency ranges property with vibration, and rail is the main radiating body of noise in this scope, therefore suppresses rail vibration, reduces the rail acoustic radiation, to the key effect of track circuit noise reduction serves.When vibration isolation measure reached its maturity under rail, the vibration that track is passed on the basis, ground was able to reduce significantly, but therefore the rail vibration and the radiated noise that cause owing to track irregularity do not obtain substantial change.The distance that low rigidity railway rail pad makes rail vibration propagate along rail increases, thereby the noise that rail produces will increase; Though and the higher railway rail pad of employing rigidity can reduce the noise of rail, also can increase the noise of sleeper simultaneously.If increase the rail bump leveller for the rail that supports by the cushion plate, both can increase the attenuation rate of vibration along rail, can not increase the noise level of sleeper again, can reach tangible noise reduction.
Rail noise control measure mainly are divided into Constrained Plates and dynamic vibration absorber dual mode at present.Literature search through prior art is found; One Chinese patent application number is 200610023902.2 dynamic vibration-absorbing multilayer damping-constraining steel rail silencer, and its structure is on the rail web of the rail and the rail wing, alternately to paste damping layer and restraint layer from inside to outside successively, finally forms multilayer damping-constraining; The deficiency that this invention exists is: because rail and wheel rigidity are very big; Add the characteristic reason of damping material, even adopt damping-constraining, its damping value that provides does not still reach the optimal damping that suppresses rail and unsteadiness of wheels; System is shaken limited with noise reduction, and especially the low frequency noise reduction is relatively poor.
One Chinese patent application number is 200480009892.6 rail damper; The deficiency that this invention exists is: 1. its structure only adopts a kind of deformable material; Making up and down, double-layer structure can only produce a resonant frequency or two very approaching resonant frequencies; Improve quality layer will with the common resonance of substructure, cause the tunable frequency scope single, and make the layer of improving quality become new noise radiation source.2. the angle of the angle of inclination of lower floor's resonant member and flange of rail upper surface is complementary, and the thickness of deformable material is thin partially, be unfavorable for following quality layers up and down and yaw motion.
Rail noise control measure all can not reduce rail vibration and radiated noise effectively at present.
Therefore, how reducing rail vibration and radiated noise effectively, is the technical problem that those skilled in the art need to be resolved hurrily.
Summary of the invention
In view of this, the invention provides a kind of rail bump leveller, to reduce rail vibration and radiated noise effectively.
For realizing above-mentioned purpose, the present invention provides following technical scheme:
A kind of rail bump leveller; Be arranged at the waist of rail both sides; Be used to absorb rail vibration, comprise the layer of improving quality from top to bottom, go up elastic damping layer, following quality layers and following elastic damping layer, the said hardness that goes up the elastic damping layer is less than the said hardness of elastic damping layer down.
Preferably, in above-mentioned rail bump leveller, the said material that goes up the elastic damping layer is natural rubber, silicon rubber or expanded material;
The material of said elastic damping layer down adopts hardness greater than said neoprene, polyurethane rubber, EP rubbers or the butadiene-styrene rubber of going up the elastic damping layer.
Preferably; In above-mentioned rail bump leveller; The said elastic damping layer of going up adopts identical material with said elastic damping layer down, and is smoked sheet natural rubber, polyurethane rubber, silicon rubber or expanded material, and the 1.5-2 that said elastic damping layer down is said upward elastic damping layer hardness doubly.
Preferably, in above-mentioned rail bump leveller, it is integral structure that the said layer of improving quality, last elastic damping layer, following quality layers and following elastic damping layer adopt the sulfidization molding technical design.
Preferably, in above-mentioned rail bump leveller, the said layer of improving quality is metallic object or non-metallic body with said time quality layers.
Preferably, in above-mentioned rail bump leveller, said upward elastic damping layer and the said glass transition temperature of elastic damping layer down are lower than-40 ℃.
Preferably, in above-mentioned rail bump leveller, said elastic damping layer and the said formation one technology breach between the elastic damping layer down gone up.
Preferably, in above-mentioned rail bump leveller, saidly go up the waist that elastic damping layer and the said installed surface of elastic damping layer down are fitted in rail both sides between adjacent fastener, through bonding adhesive or clamps on said rail.
Preferably, in above-mentioned rail bump leveller, saidly go up the elastic damping layer and said elastic damping layer down all is L type structure, said improve quality layer and said quality layers down be arranged at respectively said go up the elastic damping layer and said under on the elastic damping layer.
Preferably, in above-mentioned rail bump leveller, said quality layers down is arranged at the web of the rail and the flange of rail junction of rail, and the said soffit of quality layers down becomes reverse cross-like with rail level.
Based on above-mentioned setting; Rail bump leveller provided by the invention; Through the Hardness Design that will go up the elastic damping layer is less than the said hardness of elastic damping layer down; Make it under the vibrational excitation of rail, produce the vibration of two kinds of different resonant frequency characteristics; Wherein descend quality layers with a kind of resonant frequency vibration that is positioned at the main vibration frequency range of rail, the layer of improving quality is with the lower resonant frequency vibration of another kind, and quality layers resonates significantly and improves quality a layer purpose of design that as far as possible keeps motionless or less vibration to reach down.Even contain more low-frequency component in the rail vibration; Its frequency that causes layer resonance of improving quality is also lower; Because low frequency vibration and noise are not linear correlations, and layer vibration attenuation rate of improving quality is big, the secondary noise contribution amount that the layer of therefore improving quality causes is very little; Meanwhile, the improve quality resonance of layer will further reduce the vibratory response of rail.So the present invention can shift, absorbs and consume the rail vibration energy largely, and don't cause new noise radiation source, the final application target of realizing reducing rail vibration and acoustic radiation.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is not mounted to the sectional view on the rail for the rail bump leveller that the embodiment of the invention provides;
Fig. 2 is mounted to the sectional view on the rail for the rail bump leveller that the embodiment of the invention provides.
The specific embodiment
The invention discloses a kind of rail bump leveller, to reduce rail vibration and radiated noise effectively.
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
See also Fig. 1 and Fig. 2, Fig. 1 is not mounted to the sectional view on the rail for the rail bump leveller that the embodiment of the invention provides; Fig. 2 is mounted to the sectional view on the rail for the rail bump leveller that the embodiment of the invention provides.
The rail bump leveller that the embodiment of the invention provides is arranged at the waist of rail both sides, is used to absorb rail vibration, and rail is formed the position of the so-called waist and the web of the rail 6 by several parts such as rail head 5, the web of the rail 6 and the flanges of rail 7.The rail bump leveller comprises the layer 1 of improving quality from top to bottom, goes up elastic damping layer 2, following quality layers 3 and following elastic damping layer 4, and the hardness of last elastic damping layer 2 is less than the hardness of following elastic damping layer 4.
Rail bump leveller provided by the invention; Through the Hardness Design that will go up elastic damping layer 2 is less than the said hardness of elastic damping layer 4 down; Make it under the vibrational excitation of rail, produce the vibration of two kinds of different resonant frequency characteristics; Wherein descend quality layers with a kind of resonant frequency vibration that is positioned at the main vibration frequency range of rail, the layer of improving quality is with the lower resonant frequency vibration of another kind, and quality layers resonates significantly and improves quality a layer purpose of design that as far as possible keeps motionless or less vibration to reach down.Even contain more low-frequency component in the rail vibration; Its frequency that causes layer resonance of improving quality is also lower; Because low frequency vibration and noise are not linear correlations, and layer vibration attenuation rate of improving quality is big, the secondary noise contribution amount that the layer of therefore improving quality causes is very little; Meanwhile, the improve quality resonance of layer will further reduce the vibratory response of rail.So the present invention can shift, absorbs and consume the rail vibration energy largely, and don't cause new noise radiation source, the final application target of realizing reducing rail vibration and acoustic radiation.
The present invention has combined the principle of dynamic absorber and damping shock absorption simultaneously, can increase the rail damping, reduces near the rail vibration that reaches with upper frequency of two kinds of resonant frequencies of bump leveller, improves the attenuation rate of vibration along rail greatly.Utilize installed surface to cover simultaneously and originally be exposed to outer and the comparatively serious web of the rail position of acoustic radiation, intercept and sponge the partial radiation noise of rail.
In the present embodiment, last elastic damping layer 2 is different with the material of following elastic damping layer 4, and the material of last elastic damping layer 2 is natural rubber, silicon rubber or expanded material, is beneficial to the machine-shaping of soft sizing material; The material of following elastic damping layer 4 adopts neoprene, polyurethane rubber, EP rubbers or the butadiene-styrene rubber of hardness greater than last elastic damping layer 2, is beneficial to and shows favorable damping performance and fatigue behaviour.
The principle of specifically selecting for use of last elastic damping layer 2 and following elastic damping layer 4 material also needs to decide according to region and environmental requirement that reality is used, for example: can select silicon rubber, neoprene or EP rubbers to ageing-resistant for use with demanding region of weather-resistant property or highway section; Can select neoprene or EP rubbers for use in the environment that can want resistance to liquid; Can select polyurethane rubber for use under the environment to intensity, anti-ozone and the equal tool high requirement of oil resistant; Other conventional environment can be selected all better natural rubbers of combination property such as vibration damping, intensity, fatigue and processing for use down.
In addition; Whether the sulfuration process that also need consider this two-layer different hardness and formula system when selecting sizing material for use matees; Otherwise can not reach the requirement of disposable sulfidization molding; When selecting the glue kind of the same race of two kinds of different hardness for use, possibly not satisfy the sulfuration process requirement, just can consider this moment to select for use two kinds of different glue kinds to reach the purpose that sulfuration process matees.
In the present embodiment; Last elastic damping layer 2 adopts hardness different with following elastic damping layer 4; And have identical material, and be smoked sheet natural rubber, polyurethane rubber, silicon rubber or expanded material, and the 1.5-2 that following elastic damping layer 4 is last elastic damping layer 2 hardness doubly.
For example go up elastic damping layer 2 and all use the smoked sheet natural rubber with following elastic damping layer 4, the physical and mechanical properties of its sizing material is better, aspect rubber and the rail metal bonding stronger advantage is being arranged.Last elastic damping layer 2 Hardness Control are in than the soft scope, and down elastic damping layer 4 Hardness Control are in high rigidity scope more, and the 1.5-2 that the latter is about the former doubly.Its damped coefficient basic demand unanimity in order to satisfy these two kinds of bigger prescriptions of difference in hardness, the present invention has adopted two types of special vulcanizing systems, thereby has satisfied the requirement of sizing material damped coefficient preferably.Wherein, last elastic damping layer 2 solvent have: smoke sheet rubber, zinc oxide, stearic acid, age resistor, carbon black, plasticizing agent, sulphur and accelerator.Following elastic damping layer 4 solvent have: smoke sheet rubber, zinc oxide, stearic acid, age resistor, carbon black, sulphur and accelerator.Compare with following elastic damping layer 4, the umber of last elastic damping layer 2 use age resistor and carbon black still less uses the umber of sulphur and accelerator more, and adds the plasticizing agent of certain umber.
In the present embodiment, improve quality layer 1, go up elastic damping layer 2, quality layers 3 and following elastic damping layer 4 employing sulfidization molding technical design are integral structure down.Form a technology breach between last elastic damping layer 2 and the following elastic damping layer 4.
The shape of installed surface of the present invention is consistent with the rail web of the rail and flange of rail upper surface correspondingly-shaped, to guarantee to closely cooperate installation.Also designed a technology breach at last elastic damping layer 2 and 4 on following elastic damping layer, like this when sulfidization molding, just can prevent the mutual doping of 4 on elastic damping layer 2 and following elastic damping layer through the mould partition method.The present invention also will descend the angle of inclination of quality layers 3 bottom surfaces to be designed to become reverse cross-like with the angle of inclination of the flange of rail 7 upper surfaces; So just can improve the lateral stability of barycenter; And the thickness of elastic damping layer is descended in increase to large extent; Increase quality layers down up and down with the degrees of freedom and the amplitude of yaw motion, improve the transfer and the consumption effect of rail vibration energy.
The layer 1 of improving quality is the materials with high mass density characteristic with following quality layers 3, can be metal, also can be nonmetal; Last elastic damping layer 2 is the materials with suitable elasticity modulus and damping characteristic with following elastic damping layer 4, can be general purpose rubber, also can be polyurethane rubber, silicon rubber or expanded material etc.Through the structural dynamics optimal design, confirm suitable structure and shape size, weight and elastic damping material characterisitic parameter.
The present invention has adopted two kinds of elastic damping materials of different nature, and it does not exist together can be that material category is different, also can be that material category is identical but modulus of elasticity is different with damping characteristic.By and large; The hardness of last elastic damping layer 2 must be little more a lot of than the hardness of following elastic damping layer 4; Otherwise when being difficult near assurance lower floor resonant frequency maintains the main vibration frequency of rail; And reach and let superstructure produce the very purpose of design of low resonant frequency, this also is the present invention's other technology different from the past, the reason of two kinds of heterogeneity elastic damping materials of design.In addition; Design through the elastic damping material prescription; Its glass transition temperature is designed to be lower than-40 ° of C; And in-20 ~ 50 ° of C temperature territory scopes, have better elastic and damping capacity stability, thereby the rail bump leveller after the assurance moulding can be worked with the optimal dynamic performance under different regions and Various Seasonal environment for a long time.
The installed surface of elastic damping layer 2 and following elastic damping layer 4 is fitted in the waist of rail both sides between adjacent fastener, through modes such as bonding adhesive cold bonding or clamps, along the vertical symmetric arrangement rail bump leveller successively of rail.Can find out through Fig. 2; Characterisitic parameter through upper and lower double-layer structure of appropriate design and corresponding elastic damping material; The resonant frequency of substructure is designed near the main vibration frequency of rail; Make it under rail vibration encourages, produce resonance significantly, push upper and lower elastic damping layer simultaneously and produce distortion, utilize the damping characteristic of elastic damping material to consume the rail vibration energy that transfer is come fast.Because the upper and lower surfaces of quality layers 3 is surrounded by elastic damping material down, its vibration is difficult for producing new radiated noise.The resonant frequency of superstructure is designed to the resonant frequency well below lower floor; Like this under the excitation of the main vibration frequency of rail; When quality layers 3 resonated down, the layer 1 that keeps improving quality was fixed point or less vibratory output, thereby the layer of avoiding improving quality becomes new noise radiation source.Even superstructure generation low-frequency resonant also can reduce the vibration of rail at the low frequency place, make the rail bump leveller shock attenuation result preferably also arranged at the low frequency place.In addition, utilize the installed surface of rail bump leveller to override and be exposed to outer originally and the comparatively serious web of the rail position of acoustic radiation, can intercept and sponge the partial radiation noise of rail.
Last elastic damping layer 2 all is L type structure with following elastic damping layer 4, and the layer 1 of improving quality is arranged at respectively on elastic damping layer 2 and the following elastic damping layer 4 with following quality layers 3.Following quality layers 3 is arranged at the web of the rail and the flange of rail junction of rail.
Each embodiment adopts the mode of going forward one by one to describe in this manual, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments among this paper.Therefore, the present invention will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. rail bump leveller; Be arranged at the waist of rail both sides; Be used to absorb rail vibration; It is characterized in that comprise the layer (1) of improving quality from top to bottom, go up elastic damping layer (2), quality layers (3) and following elastic damping layer (4) down, the hardness of said upward elastic damping layer (2) is less than the hardness of elastic damping layer (4) under said.
2. rail bump leveller as claimed in claim 1 is characterized in that, the said material that goes up elastic damping layer (2) is natural rubber, silicon rubber or expanded material;
The material of said elastic damping layer (4) down adopts hardness greater than said neoprene, polyurethane rubber, EP rubbers or the butadiene-styrene rubber of going up elastic damping layer (2).
3. rail bump leveller as claimed in claim 1; It is characterized in that; The said elastic damping layer (2) of going up adopts identical material with said elastic damping layer (4) down; And be smoked sheet natural rubber, polyurethane rubber, silicon rubber or expanded material, and said elastic damping layer (4) down is said 1.5-2 times of going up elastic damping layer (2) hardness.
4. rail bump leveller as claimed in claim 1 is characterized in that, it is integral structure that the said layer (1) of improving quality, last elastic damping layer (2), following quality layers (3) and following elastic damping layer (4) adopt the sulfidization molding technical design.
5. rail bump leveller as claimed in claim 1 is characterized in that, the said layer (1) of improving quality is metallic object or non-metallic body with said down quality layers (3).
6. rail bump leveller as claimed in claim 1 is characterized in that, said upward elastic damping layer (2) and the said glass transition temperature of elastic damping layer (4) down are lower than-40 ℃.
7. rail bump leveller as claimed in claim 1 is characterized in that, said elastic damping layer (2) and the said formation one technology breach between the elastic damping layer (4) down gone up.
8. rail bump leveller as claimed in claim 1 is characterized in that, saidly goes up the waist that elastic damping layer (2) and the installed surface of said time elastic damping layer (4) are fitted in rail both sides between adjacent fastener, through bonding adhesive or clamps on said rail.
9. rail bump leveller as claimed in claim 1; It is characterized in that; The said elastic damping layer (2) of going up all is L type structure with said elastic damping layer (4) down, said improve quality layer (1) and said quality layers (3) down be arranged at respectively said upward elastic damping layer (2) and said under on the elastic damping layer (4).
10. rail bump leveller as claimed in claim 9 is characterized in that, said quality layers (3) down is arranged at the web of the rail and the flange of rail junction of rail, and the said soffit of quality layers (3) down becomes reverse cross-like with rail level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101848875A CN102704354A (en) | 2012-06-06 | 2012-06-06 | Steel rail vibration absorber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101848875A CN102704354A (en) | 2012-06-06 | 2012-06-06 | Steel rail vibration absorber |
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| CN102704354A true CN102704354A (en) | 2012-10-03 |
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| CN2012101848875A Pending CN102704354A (en) | 2012-06-06 | 2012-06-06 | Steel rail vibration absorber |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105421165A (en) * | 2015-12-30 | 2016-03-23 | 中铁二院工程集团有限责任公司 | Steel rail fixing structure for ballastless track and steel rail supporting device of steel rail fixing structure |
| CN105908581A (en) * | 2016-04-21 | 2016-08-31 | 同济大学 | Composite particle damper used for reducing steel rail vibration noise |
| CN106906701A (en) * | 2017-03-21 | 2017-06-30 | 中南大学 | A kind of two-sided absorbing sound and lowering noise device of railroad track and its installation method |
| CN108103854A (en) * | 2018-01-18 | 2018-06-01 | 华东交通大学 | A kind of rail using three-dimensional quasi- phonon crystal vibration and noise reducing |
| CN108517728A (en) * | 2018-05-23 | 2018-09-11 | 上海市城市建设设计研究总院（集团）有限公司 | Streetcar track flexibility package structure |
| CN110593025A (en) * | 2019-10-22 | 2019-12-20 | 中铁二院工程集团有限责任公司 | Dynamic vibration absorber for corrugation steel rail |
| CN110714372A (en) * | 2019-11-15 | 2020-01-21 | 中铁二院工程集团有限责任公司 | Dynamic vibration absorption and energy consumption device for delaying development of rail corrugation |
| CN111692258A (en) * | 2020-05-18 | 2020-09-22 | 北京智天新航科技有限公司 | Shock-resistant rubber shock absorber |
| CN112575630A (en) * | 2020-12-17 | 2021-03-30 | 上海工程技术大学 | Track impact damping vibration absorber |
| CN114892455A (en) * | 2022-04-29 | 2022-08-12 | 厦门振为科技有限公司 | Construction and installation method of high-energy-consumption vibration-damping steel rail and steel rail applying same |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105421165B (en) * | 2015-12-30 | 2017-05-10 | 中铁二院工程集团有限责任公司 | Steel rail fixing structure for ballastless track and steel rail supporting device of steel rail fixing structure |
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| CN105908581A (en) * | 2016-04-21 | 2016-08-31 | 同济大学 | Composite particle damper used for reducing steel rail vibration noise |
| CN105908581B (en) * | 2016-04-21 | 2018-06-29 | 同济大学 | A kind of composite particles damper for reducing rail vibration noise |
| CN106906701A (en) * | 2017-03-21 | 2017-06-30 | 中南大学 | A kind of two-sided absorbing sound and lowering noise device of railroad track and its installation method |
| CN108103854B (en) * | 2018-01-18 | 2024-04-02 | 华东交通大学 | Steel rail for vibration and noise reduction by utilizing three-dimensional quasi-phonon crystal |
| CN108103854A (en) * | 2018-01-18 | 2018-06-01 | 华东交通大学 | A kind of rail using three-dimensional quasi- phonon crystal vibration and noise reducing |
| CN108517728A (en) * | 2018-05-23 | 2018-09-11 | 上海市城市建设设计研究总院（集团）有限公司 | Streetcar track flexibility package structure |
| CN110593025B (en) * | 2019-10-22 | 2024-03-26 | 中铁二院工程集团有限责任公司 | Dynamic vibration absorber for wave-grinding steel rail |
| CN110593025A (en) * | 2019-10-22 | 2019-12-20 | 中铁二院工程集团有限责任公司 | Dynamic vibration absorber for corrugation steel rail |
| CN110714372A (en) * | 2019-11-15 | 2020-01-21 | 中铁二院工程集团有限责任公司 | Dynamic vibration absorption and energy consumption device for delaying development of rail corrugation |
| CN111692258A (en) * | 2020-05-18 | 2020-09-22 | 北京智天新航科技有限公司 | Shock-resistant rubber shock absorber |
| CN112575630A (en) * | 2020-12-17 | 2021-03-30 | 上海工程技术大学 | Track impact damping vibration absorber |
| CN114892455A (en) * | 2022-04-29 | 2022-08-12 | 厦门振为科技有限公司 | Construction and installation method of high-energy-consumption vibration-damping steel rail and steel rail applying same |
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Application publication date: 20121003 |