CN110593023A - Vibration and noise reduction device for track floating plate - Google Patents
Vibration and noise reduction device for track floating plate Download PDFInfo
- Publication number
- CN110593023A CN110593023A CN201910816735.4A CN201910816735A CN110593023A CN 110593023 A CN110593023 A CN 110593023A CN 201910816735 A CN201910816735 A CN 201910816735A CN 110593023 A CN110593023 A CN 110593023A
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- Prior art keywords
- vibration
- floating plate
- noise
- noise reduction
- track
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002245 particle Substances 0.000 claims abstract description 28
- 238000013016 damping Methods 0.000 claims abstract description 24
- 239000003190 viscoelastic substance Substances 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 239000006096 absorbing agent Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 9
- 239000013013 elastic material Substances 0.000 claims abstract description 8
- 239000008187 granular material Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 11
- 229910010272 inorganic material Inorganic materials 0.000 abstract description 7
- 239000011147 inorganic material Substances 0.000 abstract description 7
- 239000000428 dust Substances 0.000 abstract description 4
- 239000012535 impurity Substances 0.000 abstract description 4
- 230000007774 longterm Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 25
- 230000005855 radiation Effects 0.000 description 4
- 239000011247 coating layer Substances 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 241001669679 Eleotris Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
- E01B19/003—Means for reducing the development or propagation of noise
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Railway Tracks (AREA)
Abstract
The invention discloses a vibration and noise reducer of a track floating plate, which is arranged on floating plates at the inner sides of two steel rails and comprises a viscoelastic material layer and a particle damping dynamic vibration absorber which are sequentially arranged from top to bottom. The particle damping dynamic vibration absorber comprises a rigid mass layer and an elastic material layer which are sequentially arranged from top to bottom, and the elastic material layer is connected with the surface of the floating plate. The vibration and noise reduction device adopts a brand new design structure, and can obviously control the structural vibration of the floating plate, so that the structural noise of the floating plate can be controlled. The vibration and noise reduction device adopts a damping material with wide temperature range, high performance and high strength as a viscoelastic material layer to absorb sound and reduce noise, the strength of the vibration and noise reduction device is higher than that of the existing porous inorganic material track sound absorption plate structure, meanwhile, the influence of field dust impurities of an operation line on the sound absorption and noise reduction effect is small, and the long-term sound absorption and noise reduction effect performance is better.
Description
Technical Field
The invention belongs to the technical field of track vibration reduction equipment, and particularly relates to a track floating plate vibration and noise reducer.
Background
The existing floating slab track has lower supporting rigidity, smaller damping of a reinforced concrete floating slab structure and large vibration response of the floating slab under the action of train disturbance, thereby causing large radiation noise of the floating slab. The increased noise is transmitted to the inside of the vehicle body, affecting the riding comfort of the driver and passengers.
Chinese patent (publication No. CN 103452015A) discloses a track sound-absorbing plate structure, which comprises a central block plate body positioned between tracks on two sides and edge block plate bodies positioned on two sides of the tracks, wherein the central block plate body and the edge block plate bodies are cellular structure plate bodies made of porous inorganic materials; the left end and the right end of the central block plate body are provided with sleeper concave parts matched with sleepers, the middle part of the lower surface is provided with a longitudinal drainage ditch groove, the two sides of the middle part are respectively provided with a bearing platform concave part, and the lower surface is provided with a transverse connecting rod groove; a plurality of wedges with cut-off tips are transversely arranged on the upper surfaces of the central block plate body and the side block plate body, and the wedges are arranged at intervals; the abatvoix structure can be fast convenient lay on track railway roadbed surface, simple to operate utilizes porous inorganic material to fall the noise of the principle that sound energy absorbs, can effectively reduce the influence of wheel rail noise to the passenger, begins to absorb wheel rail noise from noise source nearest simultaneously promptly, avoids the diffusion of noise, effectively reduces the noise.
However, this patent has the following drawbacks;
1. the track sound absorbing plate structure is based on sound absorption and noise reduction only, and has little effect on vibration and structural noise control of a floating plate. And therefore has no effect on controlling the low frequency booming caused by the floating plate track.
2. This track sound-absorbing plate structure adopts porous inorganic material, and the porosity is often great in order to improve the sound absorption effect, therefore structural strength is often lower, and is comparatively unfavorable to the field operation.
3. This track sound-absorbing plate structure adopts porous inorganic material, and the unobstructed very key to its sound absorption effect in hole, the on-the-spot dust impurity granule of service line is more and can block up the abatvoix hole, if the abatvoix washs untimely, can influence greatly to abatvoix noise reduction effect.
Disclosure of Invention
The invention solves the defects of the prior art and provides the track floating plate vibration and noise reduction device which can obviously control the structural vibration of the floating plate, so that the structural noise of the floating plate can be controlled.
The technical scheme adopted by the invention is as follows: the utility model provides a track floating plate vibration attenuation noise reducer, installs on two rail inboard floating plate, includes viscoelastic material layer and the granule damping dynamic vibration absorber that sets gradually from top to bottom.
Preferably, the particle damping dynamic vibration absorber comprises a rigid mass layer and an elastic material layer which are sequentially arranged from top to bottom, and the elastic material layer is connected with the surface of the floating plate.
Preferably, the rigid mass layer comprises a steel cavity and a plurality of shot particles, and the shot particles are arranged in the steel cavity in a layered structure.
Preferably, the inner wall of the steel cavity is provided with a damping material layer.
Preferably, the outer surface of the shot particles is provided with a coating layer.
Preferably, the respective shot particles have different radii.
Preferably, the viscoelastic material layer is a sound absorption layer and is made of damping material.
Compared with the prior art, the invention has the following beneficial effects:
1. the vibration and noise reduction device adopts a brand new design structure, and can obviously control the structural vibration of the floating plate, so that the structural noise of the floating plate can be controlled.
2. The vibration and noise reduction device adopts a damping material with wide temperature range, high performance and high strength as a viscoelastic material layer to absorb sound and reduce noise, the strength of the vibration and noise reduction device is higher than that of the existing porous inorganic material track sound absorption plate structure, meanwhile, the influence of field dust impurities of an operation line on the sound absorption and noise reduction effect is small, and the long-term sound absorption and noise reduction effect performance is better.
3. Lead ball particles with different radiuses and wrapping layers are adopted in the steel cavity to form a particle damping dynamic vibration absorber, and the strong nonlinear behavior of the lead ball particles enables the inherent damping characteristic of the lead ball particles to change along with the excitation level; the response level at the resonance peak of the floating plate can be effectively inhibited, and the vibration absorption frequency band can be widened.
4. The upper surface of the vibration and noise reduction device is adhered with a viscoelastic material layer, and the viscoelastic material layer is made of damping materials with wide temperature range, high performance and high strength, so that the noise near the structure can be well absorbed, and the purpose of further reducing the track noise is achieved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a rigid mass layer structure of the present invention;
FIG. 3 is a schematic transverse cross-section of the present invention;
fig. 4 is a schematic view of the installation of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
A vibration and noise reduction device for a track floating plate is shown in figure 2 and is installed on a floating plate 4 on the inner side of two steel rails 3, and the vibration and noise reduction device is shown in figure 1 and comprises a viscoelastic material layer 1 and a particle damping dynamic vibration absorber 2 which are sequentially arranged from top to bottom.
Example 1
The viscoelastic material layer 1 is a sound absorption layer, preferably made of damping material with wide temperature range, high performance and high strength, and can absorb sound through the damping material, so that noise near the structure can be better absorbed, the purpose of further reducing the track noise is achieved, the influence of field dust impurities of an operation line on the sound absorption and noise reduction effect is small, and the strength of the viscoelastic material layer is higher than that of the porous inorganic material.
With reference to fig. 1 and fig. 2, the particle damping dynamic vibration absorber 2 includes a rigid mass layer 21 and an elastic material layer 22 sequentially disposed from top to bottom, and the elastic material layer 22 is connected to the surface of the floating plate 4. The rigid mass layer 21 includes a steel cavity 211 and a plurality of shot particles 212, and the shot particles 212 are arranged in the steel cavity 211 in a layered structure.
Example 2
When the floating plate 4 is subjected to vertical, transverse and longitudinal loads, broadband vibration occurs, energy dissipation caused by collision and friction energy consumption among shot particles 212 and energy exchange between the shot particles 212 and the viscoelastic material layer 1 is achieved, vibration of the floating plate 4 is reduced, and finally the purpose of reducing sound radiation of the floating plate 4 is achieved.
Example 3
Referring to fig. 3, in order to further improve the sound absorption and noise reduction effects of the floating plate 4, a damping material layer 213 is disposed on an inner wall of the steel cavity 211.
Example 4
Referring to fig. 3, the outer surface of the shot particles 212 is provided with a coating layer, and the radius of each shot particle 212 is different. Particles 212 with different radiuses and wrapping layers are adopted in the steel cavity 211 to form the particle damping dynamic vibration absorber 2, and the strong nonlinear behavior of the shot particles enables the inherent damping characteristic of the shot particles to change along with the excitation level; this can effectively suppress the response level at the formants of the floating plate 4, and can also widen the vibration absorption band.
The working principle of the vibration and noise reduction device is that the vibration and noise reduction device is supported on the floating plate 4, and vibration and sound radiation of the floating plate 4 are obviously inhibited. By combining the damping and sound absorption principle, the viscoelastic material 1 is adhered to the surface of the rigid mass layer 21 of the particle damping vibration absorber 2, so that the nearby noise radiation is well absorbed. The noise level of the wheel rail is reduced jointly, and the riding comfort of a driver and passengers is further improved.
The above-mentioned embodiments are merely preferred embodiments of the present invention, which should not be construed as limiting the scope of the invention, and therefore all equivalent variations made by the following claims should be included in the scope of the invention.
Claims (7)
1. The utility model provides a track floating plate vibration attenuation noise reducer, installs on two rail (3) inboard floating plate (4), its characterized in that, includes viscoelastic material layer (1) and granule damping dynamic vibration absorber (2) that set gradually from top to bottom.
2. A track floating plate vibration and noise reducer according to claim 1, wherein said particle-damped dynamic vibration absorber (2) comprises a rigid mass layer (21) and an elastic material layer (22) arranged in sequence from top to bottom, said elastic material layer (22) being attached to the surface of the floating plate (4).
3. A track floating plate vibration and noise damper according to claim 2, characterized in that said rigid mass layer (21) comprises a steel cavity (211) and several shot particles (212), said shot particles (212) being arranged in a layered structure in the steel cavity (211).
4. A track floating plate vibration and noise reducer according to claim 3, characterized in that the inner wall of the steel cavity (211) is provided with a layer (213) of damping material.
5. An orbital floating plate vibration and noise reducer as set forth in claim 3 wherein said shot particles (212) have an outer surface with a coating.
6. An orbital floating plate vibration and noise reducer as set forth in claim 5 wherein each of said shot particles (212) is of different radius.
7. A vibration and noise reducer for track floating slabs according to claim 1, characterized in that said layer of viscoelastic material (1) is an acoustic layer and made of damping material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910816735.4A CN110593023A (en) | 2019-08-30 | 2019-08-30 | Vibration and noise reduction device for track floating plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910816735.4A CN110593023A (en) | 2019-08-30 | 2019-08-30 | Vibration and noise reduction device for track floating plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110593023A true CN110593023A (en) | 2019-12-20 |
Family
ID=68856892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910816735.4A Pending CN110593023A (en) | 2019-08-30 | 2019-08-30 | Vibration and noise reduction device for track floating plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110593023A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113699838A (en) * | 2021-09-22 | 2021-11-26 | 株洲时代新材料科技股份有限公司 | Shear bar, shear hinge and shear hinge mounting structure |
| CN115289312A (en) * | 2022-06-23 | 2022-11-04 | 中国船舶重工集团公司第七一九研究所 | Composite pipeline vibration suppression device with adjustable frequency |
| 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 (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19706708A1 (en) * | 1997-02-20 | 1998-11-19 | Contitech Holding Gmbh | Acoustic damping for railway |
| JPH11217891A (en) * | 1998-01-30 | 1999-08-10 | Matsushita Electric Works Ltd | Damping panel |
| JP2003122371A (en) * | 2001-10-11 | 2003-04-25 | Showa Electric Wire & Cable Co Ltd | Sound absorbing and vibration damping material |
| CN103452015A (en) * | 2013-09-17 | 2013-12-18 | 浙江天铁实业股份有限公司 | Track acoustic board structure |
| EP2700838A1 (en) * | 2012-08-24 | 2014-02-26 | Igor Emri | Sleeper with damping element based on dissipative bulk or granular technology |
| CN105908581A (en) * | 2016-04-21 | 2016-08-31 | 同济大学 | Composite particle damper used for reducing steel rail vibration noise |
| CN206070258U (en) * | 2016-07-20 | 2017-04-05 | 中南大学 | A kind of track acoustic board |
| KR101860397B1 (en) * | 2017-08-11 | 2018-05-24 | 한국철도기술연구원 | Rail damper for reducing railway noise and vibration |
| CN212688579U (en) * | 2019-08-30 | 2021-03-12 | 陕西九域通创轨道***技术有限责任公司 | Vibration and noise reduction device for track floating plate |
-
2019
- 2019-08-30 CN CN201910816735.4A patent/CN110593023A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19706708A1 (en) * | 1997-02-20 | 1998-11-19 | Contitech Holding Gmbh | Acoustic damping for railway |
| JPH11217891A (en) * | 1998-01-30 | 1999-08-10 | Matsushita Electric Works Ltd | Damping panel |
| JP2003122371A (en) * | 2001-10-11 | 2003-04-25 | Showa Electric Wire & Cable Co Ltd | Sound absorbing and vibration damping material |
| EP2700838A1 (en) * | 2012-08-24 | 2014-02-26 | Igor Emri | Sleeper with damping element based on dissipative bulk or granular technology |
| CN103452015A (en) * | 2013-09-17 | 2013-12-18 | 浙江天铁实业股份有限公司 | Track acoustic board structure |
| CN105908581A (en) * | 2016-04-21 | 2016-08-31 | 同济大学 | Composite particle damper used for reducing steel rail vibration noise |
| CN206070258U (en) * | 2016-07-20 | 2017-04-05 | 中南大学 | A kind of track acoustic board |
| KR101860397B1 (en) * | 2017-08-11 | 2018-05-24 | 한국철도기술연구원 | Rail damper for reducing railway noise and vibration |
| CN212688579U (en) * | 2019-08-30 | 2021-03-12 | 陕西九域通创轨道***技术有限责任公司 | Vibration and noise reduction device for track floating plate |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113699838A (en) * | 2021-09-22 | 2021-11-26 | 株洲时代新材料科技股份有限公司 | Shear bar, shear hinge and shear hinge mounting structure |
| CN115289312A (en) * | 2022-06-23 | 2022-11-04 | 中国船舶重工集团公司第七一九研究所 | Composite pipeline vibration suppression device with adjustable frequency |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20191204 Address after: 721000 2205, building 1, Internet Industrial Park, No.1, Binhe South Road, Weibin District, Baoji City, Shaanxi Province Applicant after: Shaanxi Jiuyu Tongchuang Track System Technology Co., Ltd. Address before: No.26, opposite room group, chaomen village, Baisha Town, Yangxin County, Huangshi City, Hubei Province Applicant before: Luo Guihua |
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |