CN102021869A - Wideband sound absorption wedge plate - Google Patents
Wideband sound absorption wedge plate Download PDFInfo
- Publication number
- CN102021869A CN102021869A CN2009101958430A CN200910195843A CN102021869A CN 102021869 A CN102021869 A CN 102021869A CN 2009101958430 A CN2009101958430 A CN 2009101958430A CN 200910195843 A CN200910195843 A CN 200910195843A CN 102021869 A CN102021869 A CN 102021869A
- Authority
- CN
- China
- Prior art keywords
- plate body
- plate
- broadband
- wedge
- rail
- Prior art date
- 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.)
- Pending
Links
Images
Landscapes
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention provides a wideband sound absorption wedge plate laid on ballast beds on two sides of a railway steel rail. The wedge plate comprises a first plate body and a second plate body; the first plate body is connected and laid on the ballast beds on the two sides of two railway steel rails in turn respectively; the second plate body is laid on the ballast beds in the middle of the two railway steel rails in turn respectively; the upper surfaces of the first plate body and the second plate body are provided with wedge grooves; and the wedge grooves are convexly and concavely alternated, the raised parts have regular trapezoidal structures, and the groove parts have inverse trapezoidal structures. Aiming at the design of a railway-rail system of different speed sections, compared with the sound absorption plate of the traditional railway rail system, the wideband sound absorption wedge plate has higher sound absorption factor and de-noising level in a wider band, is simple and easy to drain water, does not affect the landscape as a sound barrier, and has remarkable economic and social effects.
Description
Technical field
The present invention relates to acoustical board, relate in particular to a kind of broadband wedge absorber plate that is laid on rail system railway roadbed surface.
Background technology
The noise problem that the Train Track system is produced has a strong impact on passenger comfort and resident's along the line normal life, and the noise of control Train Track system is the important topic of environmental protection.The reduction noise measure of existing Train Track system mainly is to set up the sound barrier of sound absorption and insulation on the track both sides or lay general acoustical board on the rail system surface, sound barrier be on the noise transmission path, absorb, reflecting background, can't reduce noise from the source, in some environment, can cause acoustical reflection and stack, and landscape effect is bad.The general acoustical board of laying does not in orbit utilize wedge absorber and cavity resonance principle owing to it, so do not reach the sound absorption efficiency and the noise abatement of broadband the best.The flat design of general acoustical board simultaneously is unfavorable for draining of rail, in case there is ponding must influence its acoustically effective, causes at the plate prodelta clay water of northern area and freezes even can influence traffic safety.
Tunnel compression wave serious harm train operating safety and comfortableness that train is produced during by the tunnel, especially train is more outstanding during meeting in the tunnel, and the sonic boom phenomenon that produces when train rolls the tunnel away from simultaneously causes very big harm near the environment the tunnel exit.The conventional method of control tunnel compression wave intensity mainly is to amplify tunnel cross-section to amass, enlarge the tunnel portal width, increase tunnel steam vent etc., and this will cause the increase of capital cost.
Therefore need exploitation a kind of based on wedge absorber and cavity resonance principle, be used for the efficient wedge absorber plate of broadband that Train Track system noise reduction and control bullet train pass through the compression wave in tunnel.
Summary of the invention
The invention provides a kind of broadband wedge absorber plate, it can realize higher acoustically effective to low-frequency noise, acoustically effective to high-frequency noise is stronger, thereby improves the sound absorption efficiency and the noise abatement of acoustical board, and the tunnel compression wave intensity that is produced when reducing train by the tunnel greatly.
In order to achieve the above object, the invention provides a kind of broadband wedge absorber plate, be arranged on the railway roadbed of train railway track both sides, comprise first plate body and second plate body; First plate body connects on the railway roadbed that is laid on two bursts of rail both sides of railway successively; Second plate body is laid on the middle railway roadbed of two strands of rail of railway successively; The upper surface of first plate body and second plate body is provided with wedge shape groove; Described wedge shape groove convex-concave is alternate, and this bossing is the trapezoid structure, and this groove part is inverted trapezoidal structure.
One end of described first plate body is provided with recessed structures, and its other end is provided with bulge-structure, rabbets mutually by described recessed structures and bulge-structure between adjacent first plate body.One side of first plate body is offered an opening, and when laying first plate body, this opening is used for the support rail platform interlocking with the rail both sides.
The laying cross section of described second plate body structure that is rectangle, the side of second plate body is provided with the base angle recess, and the shape of this base angle recess matches with the support rail platform.When laying described second plate body, between adjacent second plate body gap is set.
The plate body inside of described first plate body and second plate body is vesicular texture.
The bottom of described first plate body and second plate body is provided with some cavitys, and this cavity is provided with perpendicular to the rail direction.
Described groove is provided with perpendicular to the rail direction.
The present invention has the following advantages:
1. the plate body upper surface is provided with wedge shape ditch mortise, and farthest absorption of noise reaches best acoustically effective.
2. the bottom of plate body is provided with cavity, not only can improve the effect of sound absorption and reduction air pressure wave, and help draining, can not cause negative consequences such as ponding, freezing up.
3. according to the structure and the space of track, both sides are laid different plate bodys respectively with the centre, and this kind compound mode has maximized the area of sound absorption plate body, therefore, has also increased acoustically effective.
4. this acoustical board is because of having adopted wedge and cavity structure, utilize the principle of wedge absorber and cavity resonance, can realize higher acoustically effective to low-frequency noise, acoustically effective to high-frequency noise is stronger, thereby improve the sound absorption efficiency and the noise abatement of acoustical board, and the tunnel compression wave intensity that is produced when reducing train greatly by the tunnel.
Description of drawings
Fig. 1 is the structural representation of first plate body of broadband wedge absorber plate of the present invention;
Fig. 2 is the left view of broadband wedge absorber plate shown in Figure 1;
Fig. 3 is the structural representation of second plate body of broadband wedge absorber plate of the present invention;
Fig. 4 is the upward view of second plate body of broadband wedge absorber plate shown in Figure 3;
Fig. 5 is the left view of the plate body of broadband wedge absorber plate shown in Figure 3;
Fig. 6 is the installation site schematic diagram of broadband wedge absorber plate of the present invention;
Fig. 7 is the sectional view of Fig. 6 along A-A.
The specific embodiment
Followingly specify preferred implementation of the present invention according to Fig. 1-7.
Broadband wedge absorber plate of the present invention takes to comprise first plate body 1 and second plate body 2, this first plate body 1 connects successively and is laid on the railway roadbed of two bursts of rail both sides of railway, second plate body 2 is laid on the middle railway roadbed of two strands of rail, the plate body inside of this first plate body 1 and second plate body 2 is vesicular texture, to produce the wideband response to sound wave.Shown in Fig. 1-2, be the structural representation of first plate body 1 of broadband wedge absorber plate of the present invention; As shown in the figure, this first plate body 1 comprises bulge-structure 4 that is arranged on the one end and the recessed structures 3 that is arranged on an other end, and this bulge-structure 4 and recessed structures 3 have realized the interlocking between plate body and the plate body.Also offered an opening 5 in a side of first plate body 1, this opening 5 is complementary with the support rail platform of track, when being used to lay first plate body 1, and opening 5 and the interlocking of support rail platform.Upper surface setting and the perpendicular wedge shape groove 7 of line direction at plate body 1.These wedge shape ditch mortise 7 convex-concaves are alternate, bossing is trapezoid, it is trapezoidal that groove part is, because its special construction profile, its impedance is from progressively increasing to the impedance near porous material near the air characteristics impedance, therefore, and when the sound wave vertical incidence, because the progressively transition of sound layer can be absorbed efficiently, can reach best acoustically effective.The height of trapezoidal wedge ditch mortise 7 can change according to environmental requirement, with increase wedge height or depth of groove, thus the low frequency absorption characteristic of increase acoustical board.One or more cavitys 6 (as shown in Figure 2) perpendicular to line direction are set in the bottom of first plate body 1, by cavity 6 at the bottom of the plate is set, sound wave enters cavity 6 at the bottom of the plate by the acoustical board surface and resonates with wherein air, the kinetic energy of acoustical vibration is converted into heat energy and makes sound energy attenuation, thereby reaches the effect that improves sound absorption and reduce air pressure wave.Simultaneously cavity 6 has solved the drainage problem of conventional train rail system acoustical board again at the bottom of the plate, has avoided influencing because of ponding that general acoustical board impeded drainage brings, frost heave etc. the harm of track stability.
Fig. 3-5 is the structural representation of second plate body 2 of broadband wedge absorber plate of the present invention.As shown in the figure, the laying cross section of this second plate body 2 is a rectangle structure, and with respect to first plate body 1, it has bigger area coverage.The both sides of this second plate body 2 are provided with base angle recess 10, this base angle recess 10 matches with the support rail platform, is used for better holding the support rail platform, in the present embodiment, base angle recess 10 is trapezium structure, and it can make second plate body 2 better be placed on the middle railway roadbed of two strands of rail.Identical with first plate body 1, the upper surface of this second plate body also is provided with the wedge shape groove 7 perpendicular with the rail direction, and these wedge shape ditch mortise 7 convex-concaves are alternate, and bossing is trapezoid, and it is trapezoidal that groove part is; And the soffit of described second plate body 2 is provided with one or more cavitys 6 perpendicular to the rail direction equally.
Be the installation site schematic diagram of broadband wedge absorber plate of the present invention as Fig. 6-7.As shown in the figure, first plate body 1 is installed in two bursts of rail 10 both sides, during installation, the bulge-structure 4 and recessed structures 3 embedding mutually each other of first plate body 1 that front and back link to each other, opening 5 blocks the support rail platform 9 that rail 10 both sides are provided with, the installation that has guaranteed first plate body 1 is stable, makes first plate body 1 form an integral body and is laid on the railway roadbed 8.Second plate body 2 is installed in the centre of these two strands of rail 10, because the two sides that second plate body, 2 front and back link to each other is the plane, therefore, link to each other before and after during installation, gap 21 is set in order to draining between second plate body 2, trapezoidal recessed 10 of its side can hold support rail platform 9, and second plate body 2 can better be placed on the railway roadbed 8 of two strands of rail, 10 centres.The mode that the wedge absorber plate is placed in this kind combination has guaranteed the maximization of the area of wedge absorber plate above the railway roadbed 8, because the effect of sound absorption more is directly proportional with its area except outside the Pass having with sound absorption efficiency, has therefore guaranteed best acoustically effective.Broad band sound absorption plate of the present invention also can be ballastless track bed applicable to having fragment rail bed.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be conspicuous.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. a broadband wedge absorber plate is arranged on the railway roadbed (8) of train railway track (10) both sides, it is characterized in that, comprises first plate body (1) and second plate body (2);
Described first plate body (1) connects on the railway roadbed (8) that is laid on two strands of rail of railway (10) both sides successively;
Described second plate body (2) is laid on the middle railway roadbed (8) of two strands of rail of railway (10) successively;
The upper surface of described first plate body (1) and second plate body (2) is provided with wedge shape groove (7);
Described wedge shape groove (7) convex-concave is alternate, and this bossing is the trapezoid structure, and this groove part is inverted trapezoidal structure.
2. broadband wedge absorber plate as claimed in claim 1, it is characterized in that, one end of described first plate body (1) is provided with recessed structures (3), its other end is provided with bulge-structure (4), rabbets mutually by described recessed structures (3) and bulge-structure (4) between adjacent first plate body (1).
3. broadband wedge absorber plate as claimed in claim 2 is characterized in that a side of described first plate body (1) is offered an opening (5), and when laying first plate body (1), this opening (5) is used for support rail platform (9) interlocking with rail (10) both sides.
4. broadband wedge absorber plate as claimed in claim 1 is characterized in that, the laying cross section of described second plate body (2) structure that is rectangle.
5. broadband wedge absorber plate as claimed in claim 4 is characterized in that the side of described second plate body (2) is provided with base angle recess (10), and the shape of this base angle recess (10) matches with support rail platform (9).
6. broadband wedge absorber plate as claimed in claim 4 is characterized in that, when laying described second plate body (2), gap (21) is set between adjacent second plate body (2).
7. broadband wedge absorber plate as claimed in claim 1 is characterized in that, the plate body inside of described first plate body (1) and second plate body (2) is vesicular texture.
8. broadband wedge absorber plate as claimed in claim 1 is characterized in that, the bottom of described first plate body (1) and second plate body (2) is provided with some cavitys (6).
9. a kind of broadband wedge absorber plate as claimed in claim 8 is characterized in that described cavity (6) is perpendicular to rail (10) direction setting.
10. broadband wedge absorber plate as claimed in claim 1 is characterized in that, described groove (7) is perpendicular to rail (10) direction setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101958430A CN102021869A (en) | 2009-09-17 | 2009-09-17 | Wideband sound absorption wedge plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101958430A CN102021869A (en) | 2009-09-17 | 2009-09-17 | Wideband sound absorption wedge plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102021869A true CN102021869A (en) | 2011-04-20 |
Family
ID=43863611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101958430A Pending CN102021869A (en) | 2009-09-17 | 2009-09-17 | Wideband sound absorption wedge plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102021869A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452015A (en) * | 2013-09-17 | 2013-12-18 | 浙江天铁实业股份有限公司 | Track acoustic board structure |
-
2009
- 2009-09-17 CN CN2009101958430A patent/CN102021869A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103452015A (en) * | 2013-09-17 | 2013-12-18 | 浙江天铁实业股份有限公司 | Track acoustic board structure |
| CN103452015B (en) * | 2013-09-17 | 2015-04-22 | 浙江天铁实业股份有限公司 | Track acoustic board structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204510047U (en) | Railway board plug type super high strength concrete-micropore ceramics compound sound barrier unit board | |
| CN104727242B (en) | Railway board plug type super high strength concrete micropore ceramics compound sound barrier cell board | |
| CN201686905U (en) | Track sound absorption slipper | |
| CN202117734U (en) | Impedance compound muffler with large wind volume | |
| CN103526700B (en) | A kind of sound barrier | |
| CN201512730U (en) | Sound-absorption wedge plate for reducing wheel rail noises and tunnel pressure waves | |
| CN103452015B (en) | Track acoustic board structure | |
| CN202131570U (en) | Hollow reinforcement filled enhanced sound barrier with oblique holes | |
| CN102021869A (en) | Wideband sound absorption wedge plate | |
| CN201106143Y (en) | Acoustic panel for reducing unballasted track travelling crane noise | |
| CN216040442U (en) | Sound absorbing plate for track, track and noise reduction system | |
| CN203530871U (en) | Sound barrier fixing structure | |
| EP3436639B1 (en) | Railway or tramway track with a low noise barrier comprising modular panels | |
| CN203420187U (en) | Track acoustic board device | |
| CN204151703U (en) | A kind of MULTILAYER COMPOSITE precast concrete sound barrier panel | |
| WO2024021442A1 (en) | Elevated double-track railway noise reduction system | |
| CN217810252U (en) | Wheel rail noise sound absorption system and rail system | |
| CN205421055U (en) | Bridge nonmetal sound barrier that excels in for high -speed railway | |
| CN108867426A (en) | Highway crash soundproof wall | |
| CN204875576U (en) | Protective screen is handled to wedge noise | |
| CN108017410A (en) | A kind of ballast bed of track abatvoix and preparation method thereof | |
| CN220377014U (en) | Ballastless track structure | |
| CN208279520U (en) | A kind of ballast bed of track abatvoix | |
| CN202830656U (en) | Lightweight aggregate acoustic panel absorber | |
| CN208869960U (en) | Highway crash soundproof wall |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20110420 |