CN103981779A - Broadband noise-reduction steel rail - Google Patents
Broadband noise-reduction steel rail Download PDFInfo
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- CN103981779A CN103981779A CN201410225840.8A CN201410225840A CN103981779A CN 103981779 A CN103981779 A CN 103981779A CN 201410225840 A CN201410225840 A CN 201410225840A CN 103981779 A CN103981779 A CN 103981779A
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- rail
- damping material
- lower metal
- noise
- metal derby
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Abstract
The invention discloses a broadband noise-reduction steel rail. The composition of the broadband noise-reduction steel rail is as follows: damping material bodies (2) are bonded in rail web recessions at the both sides between the fasteners of the steel rail (1), and the shapes of the damping material bodies (2) are adaptive to the rail web recessions of the steel rail (1); upper metal blocks (3) are embedded on the upper portions in the damping material bodies (2), an inner lower metal block (4) and an outer lower metal block (5) are embedded on the lower portions in the damping material bodies (2), and the opposite surfaces of the inner lower metal block (4) and the outer lower metal block (5) are contacted. The broadband noise-reduction steel rail is wide in vibration and noise reduction band, good in noise-reduction effect, reliable in performance, and long in service life.
Description
Technical field
The present invention relates to a kind of wideband noise reduction rail.
Background of invention
Track traffic fast development has brought many facilities, but wheel-rail noise problem also highlights day by day, and particularly urban track traffic is shuttled back and forth in the personnel inhabitation compact district of living, and must reduce wheel-rail noise to reduce the impact on people's normal life.
Wheel-rail noise is the irregularity due to track and wheel tread, the noise that wheel rolls fast in orbit and causes wheel, rail and architecture vibration and produce.Research shows, the noise that rail vibration produces accounts for major part, therefore, for reducing wheel-rail noise, pollutes, and can start with from reducing rail vibration.Adopting steel rail with low noise is the effective measures that reduce rail vibration.Existing steel rail with low noise mainly contains two kinds: a kind of is at steel rail web place, to paste damping material, by damping material, absorb the logical noise that reduces of vibration of rail, the damping of damping material centering dither is good, can reduce preferably high-frequency noises, but poor to the noise reduction of low-frequency noise.Another kind is tuning damp type steel rail with low noise, in the bottom of steel rail web, is connected lower floor's bloom with bottom by damping material layer, and the top of lower floor's bloom connects upper strata bloom by upper strata damping material layer and forms tuned damper; Connection between each of tuned damper layer is and connects bondingly, and the top of its upper strata bloom is positioned at half At The Height of the web of the rail.Tuned damper is real is mono-pendulum type oscillator, has the intrinsic frequency of himself, very large at the Oscillation Amplitude of this intrinsic frequency Xia Qi lower floor bloom.The vibration of lower floor's bloom makes upper and lower damping material layer produce dynamic deformation, and vibrational energy is changed into thermal dissipation, and rail noise is minimized.It has good noise reduction to the frequency range (intrinsic frequency) of setting, but poor to the noise noise reduction beyond this frequency range; And on the top of the web of the rail, there is no any vibration-proof structure, the top vibration of the web of the rail can produce noise without the outside propagation stopping, and its noise reduction is restricted.By damping structure, be out of shape and consume rail vibration energy, reduce chatter radiation.The denoising structure of this non-closing form is easy ponding also, and laying dust, causes its application life low.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of wideband noise reduction rail is provided, this kind of wideband noise reduction rail, the bandwidth of its vibration and noise reducing, excellent noise reduction effect, and its dependable performance, long service life.
The technical solution adopted for the present invention to solve the technical problems is: a kind of wideband noise reduction rail, it is characterized in that, and damping material body is all pasted in the web of the rail depressed area, both sides between rail fastening, and the web of the rail depressed area of the shape of damping material body and rail is adaptive; And the pre-buried upper metal derby in the top in damping material body, the pre-buried interior lower metal derby in bottom and outside lower metal derby in damping material body, the opposite face of interior lower metal derby and outside lower metal derby contacts.
Operating principle of the present invention is:
Wheel rolls and produces exciting force on rail, rail is produced laterally and vertical vibration, and vibration is passed to whole rail section.Fill up that the damping material body of whole web of the rail depressed area is omnibearing to be absorbed the vibration of medium-high frequency and noise, curb.
The upper metal derby lighter weight of damping material body internal upper part, its intrinsic frequency is higher, under this higher intrinsic frequency, upper strata bloom produces significantly vibration, make near its damping material produce dynamic deformation, vibrational energy is changed into thermal dissipation, thereby curb upper frequency vibration and noise in low frequency.
In damping material body, the interior lower metal derby of bottom and outside lower metal derby are close to a large resonant mode gauge block of formation, its intrinsic frequency is lower, at this lower intrinsic frequency low-resonance mass, produce significantly vibration, make near its damping material produce dynamic deformation, vibrational energy is changed into thermal dissipation, thereby curb lower frequency vibration and noise in low frequency; Simultaneously, between the interior lower metal derby of being close to and outside lower metal derby, there is dry friction effect, do the used time being subject to the horizontal or vertical exciting of frequency beyond resonant mode gauge block intrinsic frequency, between two metal derbies, there is relative fricting movement, produce the energy that dissipates, realize the vibration and noise reducing effect of wide-band.
Compared with prior art, the invention has the beneficial effects as follows:
One, rail head is to vibrate larger position, and the noise of generation is large.Than only paste the prior art of damping material in web of the rail middle and lower part, damping material body of the present invention fills up whole web of the rail depressed area and can will better the medium-high frequency vibration and the noise that comprise the whole rail of rail head be absorbed, curb the excellent noise reduction effect to high-frequency noises.
Two, in damping material body, above metal derby is that core forms a tuned damper, and upper frequency vibration and noise in low frequency are carried out to vibration and noise reducing; The large resonant mode gauge block that interior lower metal derby and outside lower metal derby are close to formation forms another tuned damper, and lower frequency vibration and noise in low frequency are carried out to vibration and noise reducing; Thereby the present invention can carry out the vibration and noise reducing of wider judgement in low-frequency range.
And between interior lower metal derby and outside lower metal derby, there is dry friction effect, and between two metal derbies, there is relative fricting movement, produce the energy that dissipates, the frequency range of vibration and noise reducing of the present invention is further widened.
Three, damping material body fills up whole web of the rail depressed area, forms enclosed construction with rail, do not have corner or opening portion, has avoided accumulating of rainwater, dust, has guaranteed its dependable performance, long service life.
In a word, the present invention utilizes multiple denoising structure and principle, forms wider noise reduction frequency band, and the chatter radiation of rail is had to better inhibitory action.
Further, interior lower metal derby of the present invention and outside lower metal derby slope inwardly from bottom to up, and its angle of inclination is 45 °-85 °.
Like this, the two inclination is stacking, can be at rail vertical or oscillation crosswise more easily form the changing of the relative positions while transmitting, i.e. fricting movement, producing dissipates can carry out vibration and noise reducing; Meanwhile, outside lower metal derby also can form the pressure of internally lower metal derby because of gravity, and when the two produces fricting movement, the dissipation of generation can be larger, the better effects if of vibration and noise reducing.
Further, both sides and the below of rail of the present invention are provided with fixture, and the clamping face of fixture is clamped on the external surface of damping material body.
Like this, can make damping material body more firmly be fitted on rail; Meanwhile, fixture into about bundle, is beneficial to the distortion power consumption of damping material to the damping material bodily form, produces Noise Reduction.
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present invention.
The specific embodiment
Fig. 1 illustrates, and a kind of specific embodiment of the present invention is, a kind of wideband noise reduction rail, is characterized in that, damping material body 2 is all pasted in the web of the rail depressed area, both sides between rail 1 fastener, and the web of the rail depressed area of the shape of damping material body 2 and rail 1 is adaptive; And the pre-buried upper metal derby 3 in the top in damping material body 2, the pre-buried interior lower metal derby 4 in bottom and outside lower metal derby 5 in damping material body 2, interior lower metal derby 4 contacts with the opposite face of outside lower metal derby 5.
Interior lower metal derby 4 and the outside lower metal derby 5 of this example slope inwardly from bottom to up, and its angle of inclination is 45 °-85 °.
The both sides of this routine rail 1 and below are provided with fixture 6, and the clamping face of fixture 6 is clamped on the external surface of damping material body 2.
Claims (3)
1. a wideband noise reduction rail, is characterized in that, damping material body (2) is all pasted in the web of the rail depressed area, both sides between rail (1) fastener, and the web of the rail depressed area of the shape of damping material body (2) and rail (1) is adaptive; And the pre-buried upper metal derby in top (3) in damping material body (2), the pre-buried interior lower metal derby in bottom (4) and outside lower metal derby (5) in damping material body (2), interior lower metal derby (4) contacts with the opposite face of outside lower metal derby (5).
2. a kind of wideband noise reduction rail according to claim 1, is characterized in that: described interior lower metal derby (4) and outside lower metal derby (5) slope inwardly from bottom to up, and its angle of inclination is 45 °-85 °.
3. a kind of wideband noise reduction rail according to claim 1, is characterized in that: the both sides of described rail (1) and below are provided with fixture (6), and the clamping face of fixture (6) is clamped on the external surface of damping material body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410225840.8A CN103981779A (en) | 2014-05-27 | 2014-05-27 | Broadband noise-reduction steel rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410225840.8A CN103981779A (en) | 2014-05-27 | 2014-05-27 | Broadband noise-reduction steel rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103981779A true CN103981779A (en) | 2014-08-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410225840.8A Pending CN103981779A (en) | 2014-05-27 | 2014-05-27 | Broadband noise-reduction steel rail |
Country Status (1)
| Country | Link |
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| CN (1) | CN103981779A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104711904A (en) * | 2015-03-20 | 2015-06-17 | 李炳德 | Rail train noise-reduction bumpiness elimination steel rail and transition connecting method thereof |
| CN105908581A (en) * | 2016-04-21 | 2016-08-31 | 同济大学 | Composite particle damper used for reducing steel rail vibration noise |
| CN105951541A (en) * | 2016-06-16 | 2016-09-21 | 同济大学 | Vibration damping structure, vibration damping pad and using method thereof |
| CN106894299A (en) * | 2017-03-03 | 2017-06-27 | 上海工程技术大学 | A kind of dismountable multistage resonant track railway roadbed power vibration damping assembly |
| CN107326752A (en) * | 2017-08-03 | 2017-11-07 | 华东交通大学 | A kind of piston type rail damper |
| CN112703290A (en) * | 2018-09-06 | 2021-04-23 | 汉阳大学校产学协力团 | Shock-absorbing device |
| CN113106792A (en) * | 2021-04-19 | 2021-07-13 | 晟建科技集团有限公司 | Linear particle steel rail vibration absorber |
| CN115787369A (en) * | 2023-02-09 | 2023-03-14 | 西南交通大学 | Dry friction energy-consumption type vibration-damping noise-reducing fastener and use method thereof |
Citations (6)
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|---|---|---|---|---|
| DE3939215A1 (en) * | 1989-11-28 | 1991-05-29 | Schwartz Heinz | Reduction of noise of railway traffic - involves two=part longitudinal element of polyurethane and lead fixed to the sides of the rails |
| US6079631A (en) * | 1995-03-06 | 2000-06-27 | Pandrol Limited | Rail-fastening assembly |
| CN201722566U (en) * | 2010-07-14 | 2011-01-26 | 中国船舶重工集团公司第七二五研究所 | Vibration absorber for rail web of steel rail |
| CN202530345U (en) * | 2012-04-20 | 2012-11-14 | 希伦斯轨道交通科技股份有限公司（香港） | Steel rail absorber |
| DE102011119499A1 (en) * | 2011-11-25 | 2013-05-29 | Hermann Ortwein | Rail track for rail vehicles, has elastic inserts, which are extending over region between two sleepers, where damping body is embedded into elastic inserts with two metal strips, which are arranged vertically upright |
| CN204000483U (en) * | 2014-05-27 | 2014-12-10 | 西南交通大学 | Wideband noise reduction rail |
-
2014
- 2014-05-27 CN CN201410225840.8A patent/CN103981779A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3939215A1 (en) * | 1989-11-28 | 1991-05-29 | Schwartz Heinz | Reduction of noise of railway traffic - involves two=part longitudinal element of polyurethane and lead fixed to the sides of the rails |
| US6079631A (en) * | 1995-03-06 | 2000-06-27 | Pandrol Limited | Rail-fastening assembly |
| CN201722566U (en) * | 2010-07-14 | 2011-01-26 | 中国船舶重工集团公司第七二五研究所 | Vibration absorber for rail web of steel rail |
| DE102011119499A1 (en) * | 2011-11-25 | 2013-05-29 | Hermann Ortwein | Rail track for rail vehicles, has elastic inserts, which are extending over region between two sleepers, where damping body is embedded into elastic inserts with two metal strips, which are arranged vertically upright |
| CN202530345U (en) * | 2012-04-20 | 2012-11-14 | 希伦斯轨道交通科技股份有限公司（香港） | Steel rail absorber |
| CN204000483U (en) * | 2014-05-27 | 2014-12-10 | 西南交通大学 | Wideband noise reduction rail |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104711904A (en) * | 2015-03-20 | 2015-06-17 | 李炳德 | Rail train noise-reduction bumpiness elimination steel rail and transition connecting method thereof |
| 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 |
| CN105951541A (en) * | 2016-06-16 | 2016-09-21 | 同济大学 | Vibration damping structure, vibration damping pad and using method thereof |
| CN106894299A (en) * | 2017-03-03 | 2017-06-27 | 上海工程技术大学 | A kind of dismountable multistage resonant track railway roadbed power vibration damping assembly |
| CN107326752A (en) * | 2017-08-03 | 2017-11-07 | 华东交通大学 | A kind of piston type rail damper |
| CN112703290A (en) * | 2018-09-06 | 2021-04-23 | 汉阳大学校产学协力团 | Shock-absorbing device |
| CN113106792A (en) * | 2021-04-19 | 2021-07-13 | 晟建科技集团有限公司 | Linear particle steel rail vibration absorber |
| CN115787369A (en) * | 2023-02-09 | 2023-03-14 | 西南交通大学 | Dry friction energy-consumption type vibration-damping noise-reducing fastener and use method thereof |
| CN115787369B (en) * | 2023-02-09 | 2023-04-11 | 西南交通大学 | Dry friction energy-consumption type vibration-damping noise-reducing fastener and use method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140813 |