CN102162210A - Magnetic constrained damping vibration and noise reduction sheath - Google Patents
Magnetic constrained damping vibration and noise reduction sheath Download PDFInfo
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- CN102162210A CN102162210A CN 201110024043 CN201110024043A CN102162210A CN 102162210 A CN102162210 A CN 102162210A CN 201110024043 CN201110024043 CN 201110024043 CN 201110024043 A CN201110024043 A CN 201110024043A CN 102162210 A CN102162210 A CN 102162210A
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- noise reduction
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Abstract
The invention provides a magnetic constrained damping vibration and noise reduction sheath, and belongs to the technical field of noise reduction for rail transit. The sheath consists of a magnetic damping layer and a constrained layer stuck on the magnetic damping layer, wherein, the magnetic damping layer is coated on the bottom and waist of a steel rail, the inside surface of the magnetic damping layer is positioned at the lower part of a steel rail head, and the outside surface of the magnetic damping layer is positioned at the middle part at the outside of the steel rail head. The magnetic constrained damping vibration and noise reduction sheath has the advantages of capability of accordingly inhibiting wheel-rail vibration and noise radiation from a sound source, significant vibration and noise reduction effect, simple manufacturing process, long service life, no damage on the surface of the steel rail and no influence on original functions such as electrical conductivity and the like of the steel rail, and the sheath is convenient for field assembly and disassembly.
Description
Technical field
The present invention relates to a kind of noise reduction sheath that is installed on the railway track.Belong to track traffic noise reduction technology field.
Background technology
For overcoming the influence of vibration that track traffic produces and noise to surrounding enviroment along the line, Chinese patent application numbers 200810230531.4 discloses a kind of " self-absorption composite magnetic damping plate is used for the method for steel rail vibration damping noise reduction ", this method readme is: " a kind of self-absorption composite magnetic damping plate is used for the method for steel rail vibration damping noise reduction; be to be symmetrical arranged composite magnetic damping plate at the rail web of the rail and foot place; the skin at magnetic damping plate is symmetrical arranged the constraint metal sheet, is fixed in the both sides of rail by a U type cartridge clip." shortcoming of this self-absorption composite magnetic damping plate is that it uses U type cartridge clip that damping sheet and restraining plate are fixed on the rail web of the rail and foot place, under the long-term dynamic load of train, is difficult to guarantee its how much morphemes and close-fitting state at the scene.On the other hand, to discovering of wheel-rail noise, the rail noise radiation mainly comes from the vertical flexural vibration of rail and vertical and horizontal coupling twisting vibration, and it is not nearly enough therefore only the web of the rail being done the damping-constraining processing.So the vibration and noise reducing of this patent is indifferent.
Summary of the invention
The objective of the invention is is above-mentioned shortcoming at prior art, provide a kind of simple in structure, convenient firm, magnetic damping-constraining vibration and noise reducing sheath that the vibration and noise reducing ability is strong is installed.
Its medial surface on the rail flange of rail and the web of the rail is positioned at the rail head of rail bottom to magnetic damping-constraining vibration and noise reducing sheath of the present invention, lateral surface is positioned at the magnetically damped layer of the outer middle side part of rail head of rail and the restraint layer that sticks on the magnetically damped layer is constituted by being coated on.
The present invention utilizes the magnetic attraction of magnetic rubber damping layer that damping layer and rail are amplexiformed together securely, has guaranteed that bigger slippage does not take place the interface of damping layer and rail; Utilize the shear energy dissipation of damping material and the friction energy-dissipating between damping layer and rail, the mechanical energy in the time that rail vibration can being dissipated greatly; The medial surface of sheath covers to inboard rail head bottom, does not influence the rail inboard and contacts with the normal of wheel, and lateral surface covers middle side part to rail head, can reduce the low-frequency noise acoustic radiation of rail head of rail part so significantly.Thereby weaken the noise radiation energy of rail integral body, realize the purpose of the vibration and sound radiation of inhibition rail.
Can be provided with one at the two ends of sheath extends in above the sleeper and is coated on extension on the web of the rail.The benefit of doing like this is the installment state that has promptly guaranteed to have kept when installing at the scene former rail, makes whole rail again and all is covered by in the vibration and noise reducing sheath except that being mounted the part flange of rail that fastener occupies.
Compared with the aforementioned existing similar products, the present invention has the following advantages:
1, the present invention suppresses wheel track vibration and noise acoustic radiation, damping noise reduction effect highly significant from sound source targetedly.Analysis of experiments shows that the fissipation factor of loading onto the damping rail of this vibration and noise reducing sheath is more than four times of damping rail that do not have the trough of belt extension layer under the equal conditions.In 0～4000HZ frequency range, the rail that this vibration and noise reducing sheath has been installed all has substantial degradation than the vertical of standard rail and oscillation crosswise transfer function amplitude, overall level has reduced more than the 12dB (A), and its noise reduction has improved more than 20% than dynamic vibration-absorbing multilayer damping-constraining steel rail silencer.In the curve location, noise reduction is more obvious.
2, the present invention makes simply, and material requested can be continued to use existing damping layer material, long service life;
3, the on-the-spot installation and removal of the present invention are convenient, and the rail surface is not damaged, and also do not influence former functions such as rail conduction;
Content of the present invention further illustrates with the following Examples, but content of the present invention is not limited only to content related among the embodiment.
Description of drawings
Fig. 1 is a perspective view of the present invention
End view when Fig. 2 is of the present invention installing and using
Fig. 3 is the medial surface schematic diagram of installation station of the present invention
The specific embodiment
Referring to Fig. 1～3, bottom, lateral surface that its medial surface on the rail flange of rail 5 and the web of the rail 4 is positioned at rail head of rail 3 are positioned at the magnetically damped layer 1 of rail head of rail 3 outer middle side parts to magnetic damping-constraining vibration and noise reducing sheath 8 of the present invention and the restraint layer 2 that sticks on the magnetically damped layer is constituted by being coated on.Magnetically damped layer 1 can be selected magnetic rubber for use.Also can select the damping material of different temperatures characteristic according to environment for use for use.Can be only just adding magnetic with one side that rail pastes mutually, that face of pasting with restraint layer does not add magnetic.The same with prior art, restraint layer 2 can adopt the bigger metal material of rigidity.
For the purpose of easy for installation, this vibration and noise reducing sheath can be made along left and right two parts that the end face center line is divided into symmetry.6 for installing the fasteners of rail among the figure, and 7 be sleeper, and 9 is extending in sleeper 7 tops and being coated on extension on the web of the rail 4 of this vibration and noise reducing sheath.
Claims (2)
1. magnetic damping-constraining vibration and noise reducing sheath is characterized in that its medial surface on the rail flange of rail and the web of the rail is positioned at the rail head of rail bottom to described vibration and noise reducing sheath, lateral surface is positioned at the magnetically damped layer of the outer middle side part of rail head of rail and the restraint layer that sticks on the magnetically damped layer is constituted by being coated on.
2. magnetic damping-constraining vibration and noise reducing sheath as claimed in claim 1 is characterized in that also having at the two ends of sheath one and extends in above the sleeper and be coated on extension on the web of the rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110024043 CN102162210A (en) | 2011-01-21 | 2011-01-21 | Magnetic constrained damping vibration and noise reduction sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110024043 CN102162210A (en) | 2011-01-21 | 2011-01-21 | Magnetic constrained damping vibration and noise reduction sheath |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102162210A true CN102162210A (en) | 2011-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110024043 Pending CN102162210A (en) | 2011-01-21 | 2011-01-21 | Magnetic constrained damping vibration and noise reduction sheath |
Country Status (1)
| Country | Link |
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| CN (1) | CN102162210A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103998686A (en) * | 2011-10-17 | 2014-08-20 | 积水化学工业株式会社 | Noise insulation device for rail |
| CN104005309A (en) * | 2014-05-10 | 2014-08-27 | 青岛科而泰环境控制技术有限公司 | Shearing type track damping noise reducing device |
| CN105463952A (en) * | 2015-12-16 | 2016-04-06 | 西南交通大学 | Novel vibration-isolation noise-reduction flexible rail web covering part for modern tram |
| CN105735057A (en) * | 2016-03-07 | 2016-07-06 | 青岛思锐科技有限公司 | Steel rail cladding vibration reduction structure of embedded type railway and preparation method thereof |
| CN111118976A (en) * | 2020-02-12 | 2020-05-08 | 山西尚风科技股份有限公司 | Near-rail noise reduction device for rail transit |
| CN112046192A (en) * | 2020-09-18 | 2020-12-08 | 株洲时代新材料科技股份有限公司 | Wheel noise reduction method and composite damping noise reduction device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0150264A1 (en) * | 1983-12-24 | 1985-08-07 | Hoesch Aktiengesellschaft | Rail with noise damping means |
| DE4000992A1 (en) * | 1990-01-16 | 1991-07-18 | Phoenix Ag | Railway lines clad on both sides with synthetic rubber dampers - have spring clamps constantly pressing dampers against stem and foot of rail |
| EP0849495B1 (en) * | 1996-11-26 | 2004-10-27 | C.I. Kasei Co., Ltd | Method of damping vibrations |
| CN2692194Y (en) * | 2003-12-19 | 2005-04-13 | 钱国桢 | Noise reducing bush for road rail |
| CN101413230A (en) * | 2008-10-14 | 2009-04-22 | 中国船舶重工股份有限公司洛阳分公司 | Steel rail vibration damping noise reduction method for self-absorption composite magnetic damping plate |
-
2011
- 2011-01-21 CN CN 201110024043 patent/CN102162210A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0150264A1 (en) * | 1983-12-24 | 1985-08-07 | Hoesch Aktiengesellschaft | Rail with noise damping means |
| DE4000992A1 (en) * | 1990-01-16 | 1991-07-18 | Phoenix Ag | Railway lines clad on both sides with synthetic rubber dampers - have spring clamps constantly pressing dampers against stem and foot of rail |
| EP0849495B1 (en) * | 1996-11-26 | 2004-10-27 | C.I. Kasei Co., Ltd | Method of damping vibrations |
| CN2692194Y (en) * | 2003-12-19 | 2005-04-13 | 钱国桢 | Noise reducing bush for road rail |
| CN101413230A (en) * | 2008-10-14 | 2009-04-22 | 中国船舶重工股份有限公司洛阳分公司 | Steel rail vibration damping noise reduction method for self-absorption composite magnetic damping plate |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103998686A (en) * | 2011-10-17 | 2014-08-20 | 积水化学工业株式会社 | Noise insulation device for rail |
| CN103998686B (en) * | 2011-10-17 | 2016-06-29 | 积水化学工业株式会社 | The sound arrester of track |
| CN104005309A (en) * | 2014-05-10 | 2014-08-27 | 青岛科而泰环境控制技术有限公司 | Shearing type track damping noise reducing device |
| CN104005309B (en) * | 2014-05-10 | 2015-11-04 | 青岛科而泰环境控制技术有限公司 | Shearing track vibration damping denoising device |
| CN105463952A (en) * | 2015-12-16 | 2016-04-06 | 西南交通大学 | Novel vibration-isolation noise-reduction flexible rail web covering part for modern tram |
| CN105735057A (en) * | 2016-03-07 | 2016-07-06 | 青岛思锐科技有限公司 | Steel rail cladding vibration reduction structure of embedded type railway and preparation method thereof |
| CN111118976A (en) * | 2020-02-12 | 2020-05-08 | 山西尚风科技股份有限公司 | Near-rail noise reduction device for rail transit |
| CN112046192A (en) * | 2020-09-18 | 2020-12-08 | 株洲时代新材料科技股份有限公司 | Wheel noise reduction method and composite damping noise reduction device |
| CN112046192B (en) * | 2020-09-18 | 2022-03-22 | 株洲时代新材料科技股份有限公司 | Wheel noise reduction method and composite damping noise reduction device |
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Application publication date: 20110824 |