CN102268850B - Damping shock absorber for track - Google Patents
Damping shock absorber for track Download PDFInfo
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- CN102268850B CN102268850B CN201110156388.0A CN201110156388A CN102268850B CN 102268850 B CN102268850 B CN 102268850B CN 201110156388 A CN201110156388 A CN 201110156388A CN 102268850 B CN102268850 B CN 102268850B
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- damping
- rail
- damping structure
- clamping part
- track
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Abstract
The invention discloses a kind of damping shock absorber for track, comprise the damping structure at the web of the rail place being layed in track, also comprise the clamp assembly of the described damping structure of clamping near the described web of the rail, this clamp assembly comprises left clamping part and right clamping part, and connects the link of described left clamping part and described right clamping part removably.Damping structure has higher damping loss factor relative to the rail body of track, can play the effect of Conversion of Energy fully, guarantee the anti-acoustic capability of damping shock absorber.Meanwhile, because clamp assembly can clamp the closely connected web of the rail of damping structure, therefore, damping structure and the web of the rail do not need to be fixed together; When track or damping structure need to change, remove the locking relation between left clamping part and right clamping part, track or damping structure can be changed separately, still spendable structure still can continue to use, to reduce waste during railway maintenance, avoid unnecessary economic loss, improve the cost performance of damping shock absorber.
Description
Technical field
The present invention relates to antivibration area, particularly relate to a kind of damping shock absorber for track.
Background technology
Noise is the pollution sources of environment, very harmful to the physical and mental health 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.The noise of train when below 250Km/h speeds is mainly derived from wheel-rail noise, 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.Finding after practice in a few years, there is the place needing to improve further and improve in this technology.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of typical rail and damping shock absorber thereof in prior art.
As shown in Figure 1, damping shock absorber 11 of the prior art is fixed together with the rail body 12 of rail, when needing to change rail, damping shock absorber 11 can be changed together, now damping shock absorber 11 still can use, but can change with rail body 12, there is very large waste; But be difficult to again in using guarantee that rail body 12 and damping shock absorber 11 are scrapped, therefore, waste is unavoidable simultaneously.
Therefore, how on the basis of guaranteeing rail anti-acoustic capability, improve the utilization rate of rail and damping shock absorber, avoid unnecessary waste, improving the applicability of damping shock absorber and the cost performance of rail, 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 track, this damping shock absorber for track not only has good anti-acoustic capability, and be connected removably with the rail body of rail, thus improve utilization rate and the applicability of damping shock absorber, avoid unnecessary waste, improve the cost performance of damping shock absorber.
For achieving the above object, the invention provides a kind of damping shock absorber for track, comprise the damping structure at the web of the rail place being layed in track, also comprise the clamp assembly of the described damping structure of clamping near the described web of the rail, this clamp assembly comprises left clamping part and right clamping part, and connects the link of described left clamping part and described right clamping part removably; Described left clamping part comprises mutually affixed left fastening portion and left connection part, and described right clamping part comprises mutually affixed right fastening portion and right connection part; Described left fastening portion fits in the described damping structure in left side, and described right fastening portion fits in the described damping structure on right side; Described link connects described left connection part and described right connection part; Described damping structure is provided with the first Damping material layer, the first metal restriction flaggy, the second Damping material layer, the second metal restriction flaggy and rubber cover from inside to outside successively, and described clamp assembly is directly fitted the external surface of described rubber cover.
Preferably, the top of described left fastening portion and the top of described right fastening portion are all lower than the top of described damping structure.
Preferably, described link is specially screw bolt and nut.
Preferably, the sealing material layer be located between described damping structure and the described web of the rail is also comprised.
Preferably, between adjacent two sleepers, be provided with clamp assembly described in two, and clamp assembly described in two is respectively near a described sleeper.
Preferably, the laying length of described damping shock absorber for track accounts for the 50%-75% intending noise reduction total line length.
Damping shock absorber for track provided by the present invention, comprise the damping structure at the web of the rail place being layed in track, also comprise the clamp assembly of the described damping structure of clamping near the described web of the rail, this clamp assembly comprises left clamping part and right clamping part, and connects the link of described left clamping part and described right clamping part removably.Damping structure has higher damping loss factor relative to the rail body of track, can play the effect of Conversion of Energy fully, guarantee the anti-acoustic capability of damping shock absorber.Meanwhile, because clamp assembly can clamp the closely connected web of the rail of damping structure, therefore, damping structure and the web of the rail do not need to be fixed together; When installing damping structure, locking link, makes left clamping part and right clamping part jointly clamp damping structure, is fixed on the web of the rail by the chucking power of clamp assembly by damping structure; When track or damping structure need to change, remove the locking relation between left clamping part and right clamping part, the chucking power of clamp assembly disappears thereupon, and damping structure is separated with the web of the rail, can change separately track or damping structure, do not affect not needing the structure changed, together with re-assemblying with still spendable structure after changing, continue to use, to reduce waste during railway maintenance, avoid unnecessary economic loss, improve the cost performance of damping shock absorber for track.
In a preferred embodiment, described left clamping part comprises mutually affixed left fastening portion and left connection part, and described right clamping part comprises mutually affixed right fastening portion and right connection part; Described left fastening portion fits in the described damping structure in left side, and described right fastening portion fits in the described damping structure on right side; Described link connects described left connection part and described right connection part.Left fastening portion acts on the damping structure in left side, right fastening portion acts on the damping structure on right side, make the damping structure of arranged on left and right sides all be fixed on the web of the rail by clamp assembly, the damping structure that once mounting completes arranged on left and right sides is installed, to improve the installation effectiveness of damping shock absorber for track.And this structure is simple, is easy to realize, difficulty of processing and the cost of production of clamp assembly can be reduced.
In another preferred embodiment, the top of described left fastening portion and the top of described right fastening portion are all lower than the top of described damping structure.Owing to being provided with metal restriction flaggy in damping structure, damping structure is made to have certain rigidity, therefore, the length of left fastening portion and right card section can be less than the length of damping structure, damping structure part is made to be clamped clamp, parts are fitted in web of the rail place naturally, still can ensure that damping structure does not come off, can effective vibration damping.The structure of clamp assembly can be simplified like this, avoid unnecessary waste, reduce difficulty of processing and the cost of production of clamp assembly.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of typical rail and damping shock absorber thereof in prior art;
Fig. 2 is the structural representation of damping shock absorber for track provided by the present invention and a kind of detailed description of the invention of rail body;
Fig. 3 is the structural representation of a kind of detailed description of the invention of clamp assembly provided by the present invention;
Fig. 4 is the partial enlarged drawing of part A in Fig. 2;
Fig. 5 is the top view of a kind of detailed description of the invention of damping shock absorber for track provided by the present invention.
Detailed description of the invention
Core of the present invention is to provide a kind of damping shock absorber for track, this damping shock absorber for track not only has good anti-acoustic capability, and be connected removably with the rail body of rail, thus improve utilization rate and the applicability of damping shock absorber, avoid unnecessary waste, improve the cost performance of damping shock absorber.
Innner and outer is herein with the rail body of rail for benchmark defines, and being inner near rail external surface, is outward away from rail external surface; Left and right is herein for benchmark defines with the centre line L of the figure of rail section shown in Fig. 2.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. 2, Fig. 2 is the structural representation of damping shock absorber for track provided by the present invention and a kind of detailed description of the invention of rail body.
Damping shock absorber for track provided by the present invention, comprise the damping structure 3 at the web of the rail 2 place being layed in track, also comprise the clamp assembly 4 of clamping damping structure 3 near the web of the rail 2, this clamp assembly 4 comprises left clamping part 41 and right clamping part 42, and connects the link 43 of left clamping part 41 and right clamping part 42 removably.Damping structure 3 has higher damping loss factor relative to the rail body of track, can play the effect of Conversion of Energy fully, guarantee the anti-acoustic capability of damping shock absorber.
Meanwhile, because clamp assembly 4 can clamp the closely connected web of the rail 2 of damping structure 3, therefore, damping structure 3 and the web of the rail 2 do not need to be fixed together; When installing damping structure 3, locking link 43, makes left clamping part 41 and right clamping part 42 clamping damping structure 3 jointly, is fixed on the web of the rail 2 by the chucking power of clamp assembly 4 by damping structure 3; When rail body or damping structure 3 need to change, remove the locking relation between left clamping part 41 and right clamping part 42, the chucking power of clamp assembly 4 disappears thereupon, and damping structure 3 is separated with the web of the rail 2, can change separately track or damping structure 3, do not affect not needing the structure changed, together with re-assemblying with still spendable structure after changing, continue to use, to reduce waste during railway maintenance, avoid unnecessary economic loss, improve the cost performance of damping shock absorber for track.
Please refer to Fig. 3, Fig. 3 is the structural representation of a kind of detailed description of the invention of clamp assembly provided by the present invention.
In a kind of concrete embodiment, left clamping part 41 can comprise mutually affixed left gripping section 411 and left connection part 412, and right clamping part 42 can comprise mutually affixed right gripping section 421 and right connection part 422; Left gripping section 411 fits in the damping structure 3 in left side, and right gripping section 421 fits in the damping structure 3 on right side; Link 43 connects left connection part 412 and right connection part 422.Left gripping section 411 acts on the damping structure 3 in left side, right gripping section 421 acts on the damping structure 3 on right side, the damping structure 3 of arranged on left and right sides is made all to be fixed on the web of the rail 2 by clamp assembly 4, the damping structure 3 that once mounting completes arranged on left and right sides is installed, to improve the installation effectiveness of damping shock absorber for track.And this structure is simple, is easy to realize, difficulty of processing and the cost of production of clamp assembly 4 can be reduced.
Obviously, if track only has damping structure 3 in side, also can be fixed by above-mentioned clamp assembly 4, and remove damping structure 3 when needing to safeguard and be fixedly connected with relation between rail body, meet maintenance needs.
Particularly, above-mentioned left gripping section 411 can have integral structure with left connection part 412, right gripping section 421 and right connection part 422 can have integral structure, and left clamping part 41 and right clamping part 42 all have certain elasticity, with the needs of satisfied clamping and dismounting.
Please refer to Fig. 4, Fig. 4 is the partial enlarged drawing of part A in Fig. 2.
In a kind of concrete embodiment; the damping structure 3 of damping shock absorber provided by the present invention is provided with the first Damping material layer 31, first metal restriction flaggy 32, second Damping material layer 33, second metal restriction flaggy 34 and rubber cover 35 from inside to outside successively, and clamp assembly 4 is directly fitted the external surface of rubber cover 35.Damping material layer has higher damping loss 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 the condition of identical damping material, shearing damp process is more effective than stretching impedance bundary; Rubber cover 35 has anticorrosion and ageing-resistant performance preferably; and there is wear-resisting characteristic; therefore; rubber cover 35 can prevent the corrosion of metal restriction flaggy; also other hazardous substances can be prevented the bad damage of damping shock absorber internal construction, thus extend the application life of damping shock absorber.
Obviously, above-mentioned damping structure 3 is a kind of detailed description of the invention of damping shock absorber provided by the present invention, and its Damping material layer and metal restriction flaggy can be one decks, can be two-layer, also can be multilayer, can meet the noise reduction demand of rail for basic principle.
Particularly, first Damping material layer 31 and the second Damping material layer 33 can 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.
In a preferred embodiment, the top of left gripping section 411 and the top of right gripping section 421 all can lower than the tops of damping structure 3.Owing to being provided with metal restriction flaggy in damping structure 3, damping structure 3 is made to have certain rigidity, therefore, the length of left gripping section 411 and right card section can be less than the length of damping structure 3, make damping structure 3 part be clamped assembly 4 to clamp, parts are fitted in the web of the rail 2 place naturally, still can ensure that damping structure 3 does not come off, can effective vibration damping.The structure of clamp assembly 4 can be simplified like this, avoid unnecessary waste, reduce difficulty of processing and the cost of production of clamp assembly 4.
Particularly, above-mentioned link 43 is specifically as follows bolt 431 and nut 432.Bolt 431 and nut 432 not only sound construction, be convenient to assembly and disassembly, can improve the installation effectiveness of damping shock absorber for track; And be easy to buying, the cost of clamp assembly 4 can be reduced.
Obviously, link 43 includes but not limited to bolt 431 and nut 432, and the removably link 43 that in prior art, those skilled in the art know is a lot, does not enumerate at this.
Can be further improved damping shock absorber for track provided by the present invention.
In a kind of concrete embodiment, damping shock absorber for track provided by the present invention can also comprise the sealing material layer be located between damping structure 3 and the web of the rail 2, the space between damping structure 3 and the web of the rail 2 is eliminated by sealing material layer, the vibration of rail body is made to be directly passed to damping shock absorber, to strengthen the effectiveness in vibration suppression of damping shock absorber, thus the anti-acoustic capability of track is impelled to be further enhanced.
Please refer to Fig. 5, Fig. 5 is the top view of a kind of detailed description of the invention of damping shock absorber for track provided by the present invention.
Particularly, between adjacent two sleepers 5, two clamp assemblies 4 can be set, and two clamp assemblies 4 are each near a sleeper 5.Like this, the damping structure 3 in the middle of two sleepers 5 can keep fixing under the clamping action of two clamp assemblies 4, and structure is more reliable, and each clamp assembly 4 can be made to do smaller and more exquisite, less on the overall structure impact of track.Obviously, also multiple clamp assembly 4 can be set in the middle of adjacent two sleepers 5.
Further, according to the different demand of noise reduction and the difference of investment environment, the laying length of damping shock absorber 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 damping shock absorber for track provided by the present invention is 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 (4)
1. a damping shock absorber for track, comprise the damping structure at the web of the rail place being layed in track, it is characterized in that, also comprise the clamp assembly of the described damping structure of clamping near the described web of the rail, this clamp assembly comprises left clamping part and right clamping part, and connects the link of described left clamping part and described right clamping part removably;
Described left clamping part comprises mutually affixed left fastening portion and left connection part, and described right clamping part comprises mutually affixed right fastening portion and right connection part; Described left fastening portion fits in the described damping structure in left side, and described right fastening portion fits in the described damping structure on right side; Described link connects described left connection part and described right connection part;
Described damping structure is provided with the first Damping material layer, the first metal restriction flaggy, the second Damping material layer, the second metal restriction flaggy and rubber cover from inside to outside successively, and described clamp assembly is directly fitted the external surface of described rubber cover;
First Damping material layer and the second Damping material layer have different frequency characteristics.
2. damping shock absorber for track according to claim 1, is characterized in that, the top of described left fastening portion and the top of described right fastening portion are all lower than the top of described damping structure.
3. damping shock absorber for track according to claim 1, is characterized in that, described link is specially screw bolt and nut.
4. the damping shock absorber for track according to any one of claims 1 to 3, is characterized in that, also comprises the sealing material layer be located between described damping structure and the described web of the rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110156388.0A CN102268850B (en) | 2011-06-10 | 2011-06-10 | Damping shock absorber for track |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110156388.0A CN102268850B (en) | 2011-06-10 | 2011-06-10 | Damping shock absorber for track |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102268850A CN102268850A (en) | 2011-12-07 |
| CN102268850B true CN102268850B (en) | 2015-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110156388.0A Expired - Fee Related CN102268850B (en) | 2011-06-10 | 2011-06-10 | Damping shock absorber for track |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612000B (en) * | 2013-12-05 | 2016-08-31 | 深圳市市政设计研究院有限公司 | A kind of rubber spacer railway structure with vibration and noise reducing function |
| CN108774926A (en) * | 2018-08-13 | 2018-11-09 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Combined Rail Tuning Vibration and Noise Reduction Device and Method for Adjusting Its System Natural Frequency |
| CN109594434B (en) * | 2018-11-22 | 2020-11-27 | 同济大学 | A nacre structure rail damper |
| CN109930432B (en) * | 2019-04-08 | 2020-09-01 | 西南交通大学 | Multi-mass-piece two-side clamping device for vibration reduction of track |
| CN110144770A (en) * | 2019-06-17 | 2019-08-20 | 华东交通大学 | A real-time self-sensing rail tuning mass damping device based on RFID technology |
| CN110761131B (en) * | 2019-10-29 | 2024-09-17 | 厦门振为科技有限公司 | Track line damping fastener based on particle damping |
| CN115075063A (en) * | 2022-07-22 | 2022-09-20 | 株洲时代新材料科技股份有限公司 | Steel rail damping noise reduction device and installation method |
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| DE10145145A1 (en) * | 2001-09-13 | 2003-04-03 | Bsh Bosch Siemens Hausgeraete | Vibration damping arrangement |
| US20060144659A1 (en) * | 2003-07-11 | 2006-07-06 | Pandrol Limited | Tuned absorbers for railway rails |
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|---|---|---|---|---|
| WO2001097739A1 (en) * | 2000-06-21 | 2001-12-27 | The Procter & Gamble Company | Absorbent article having a bellows for circulating fresh air |
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| CN102268850A (en) | 2011-12-07 |
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Granted publication date: 20150805 Termination date: 20210610 |