CN107813841A - Abatvoix under a kind of subway seat - Google Patents
Abatvoix under a kind of subway seat Download PDFInfo
- Publication number
- CN107813841A CN107813841A CN201711231986.3A CN201711231986A CN107813841A CN 107813841 A CN107813841 A CN 107813841A CN 201711231986 A CN201711231986 A CN 201711231986A CN 107813841 A CN107813841 A CN 107813841A
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- CN
- China
- Prior art keywords
- abatvoix
- micropunch
- oblique section
- subway seat
- under
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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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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
- B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
- B61D17/18—Internal lining, e.g. insulating
- B61D17/185—Internal lining, e.g. insulating for sound insulating
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
Abatvoix under a kind of subway seat of the present invention, it is characterized in that it is formed by the bending of micropunch abatvoix, bend abatvoix under the subway seat formed includes crosspiece from left to right, first oblique section, second oblique section and the 3rd oblique section, the micropunch abatvoix not bent includes the plate body of horizontal, rearwardly side is provided with the depression (2) being evenly arranged in the front of the plate body (1), the depression (2) is provided with micropunch (4) to more sides of its horizontal direction, micropunch (4) is also formed the sound channel at this, and be recessed (2) bottom formed stop part (3).Abatvoix, which has, under subway seat of the present invention need not coordinate sound absorbing paper, and sound-absorbing effect is good, and plate body hardness itself is high, can be applied to special pouring occasion, the advantages of can realizing batch production.
Description
Technical field
The present invention relates to abatvoix under a kind of subway seat.
Background technology
With the continuous improvement of people's quality of the life and the increasingly enhancing of environmental consciousness, its requirement to living environment also by
Step improves, and the control problem of noise has caused national governments and the most attention of scientific worker.Various sound-absorbing materials are extensive
Applied to Noise measarement.Subway ride environment noise problem also obtain each side attention.
The penetration hole diameter of common perforated plate is controlled to below 1mm, is formed microperforated panel.Now, microperforated panel
Inherently there is enough acoustic resistances, while there is sufficiently low mass reactance, form broadband sound absorber, without adding
Any porous material.With the development and raising of material and perforation process technology, and wideband, efficient, cleaning, the sound absorption of environmental protection
Feature, microperforated panel soundabsorbing construction widely use in metope and the top surface finishing in numerous places.
Microperforated panel is considered as the parallel connection of a large amount of micro-pipes (micropunch), and each micropunch is a very thin short tube,
When pitch of holes is more much larger than aperture, it will be assumed that the characteristic in each hole is independent of each other, and the acoustic impedance of microperforated panel is simply equal to single hole
Acoustic impedance divided by hole quantity.When sound wave is propagated in pipe, the influence of viscosity is considered, particle the shaking vertically on tube wall
Dynamic speed is zero, and vibration velocity on center shaft is maximum, velocity step ladder be present along radial direction in pipe.On the other hand between hole
Away from it is more much smaller than wavelength when, between hole reflection of the plate face to sound wave can also ignore.
" the accurate theoretical and design of porous plate acoustic adsorption device " that Ma Dayou academician 1997 delivers in acoustic journal and
" potentiality of porous plate acoustic adsorption device " academic article delivered in Acoustical Society of America's magazine in 1998, it is indicated that by penetration hole diameter
Further reduce, the broader sound absorber of sound sucting band can be obtained.Its suction can be showed by bringing micropunch into the ultramicropore epoch
Receive the frightened human potential of performance.
Micropunch abatvoix in the market can only accomplish 0.7mm aperture, and hole is the straight hole perpendicular to plate face, directly
Hole effect during sound-absorbing is poor, and sound absorbing paper is enclosed at the back side of this micropunch abatvoix and can be only achieved preferable sound-absorbing effect
Fruit.
The Chinese patent of Patent No. 201610754469.3, which discloses a kind of micropunch abatvoix, includes plate body, on plate body
The micropunch being evenly arranged is provided with, micropunch is diagonally disposed, and stop part, stop part and micropunch are formed at the back side of micropunch
Between leave gap, gap combines to form sound channel with micropunch.But the perforate of the micropunch of this micropunch abatvoix
It is 0.8-1mm, the less aluminium alloy of hardness or galvanized steel that form, which may be only available for plate body thickness, so that micropunch abatvoix compared with
It is soft, do not reach the pouring of some specific use environments, therefore be badly in need of developing micropore sound absorption made of harder metal plate
Plate.It is relatively low using die life during red needle acanthopore technique, it is necessary to often change but harder metal plate material is hard,
Batch production can not be realized.
The content of the invention
It is an object of the invention to overcome above-mentioned deficiency, there is provided one kind need not coordinate sound absorbing paper, and sound-absorbing effect is good, plate body sheet
Body hardness is high, can be applied to special pouring occasion, can realize abatvoix under the subway seat of batch production.
The object of the present invention is achieved like this：
Abatvoix under a kind of subway seat, it is characterised in that it is formed by the bending of micropunch abatvoix, and bending forms
Subway seat under abatvoix include crosspiece, the first oblique section, the second oblique section and the 3rd oblique section, the first oblique section, from left to right
Two oblique sections and the 3rd oblique section are gradually bent to upper right side, and wherein crosspiece forms the sound-absorbing for installing connection subway seat back segment
Plate, the first oblique section form changeover portion, and the second oblique section forms the abatvoix for installing connection subway seat leading portion, the three oblique sections shapes
Section is blocked into for block subway seat front opening；The generally longitudinally size of abatvoix is under the subway seat
1290mm, overall lateral dimension are 503.5mm, and the lateral dimension of crosspiece is 233.2mm, and the lateral dimension of the first oblique section is
80.3mm, the lateral dimension of the second oblique section is 201.3mm, and the lateral dimension of the 3rd oblique section is 35.2mm, crosspiece and the first oblique section
The chamfering of bending place be R5mm, the chamfering of the first oblique section and the bending place of the second oblique section is R13mm, the second oblique section and the 3rd oblique
The chamfering of the bending place of section is R5mm, and the micropunch abatvoix not bent includes the plate body of horizontal, and the front of the plate body is supported or opposed
Face side is provided with the depression being evenly arranged, and described be recessed is provided with micropunch to more sides of its horizontal direction, and micropunch is also
The sound channel at this is formd, and stop part is formed on the bottom being recessed.
As a preferred embodiment, the front projection of the depression is shaped as the polygon with even number of sides, during the polygon is
The symmetrical shape of the heart, polygon have the different long side of length and short side, long side and short side arranged for interval.
As a preferred embodiment, the vickers hardness hv 200-HV500 of plate body.
As a preferred embodiment, the thickness 0.5-2mm of plate body.
As a preferred embodiment, the aperture of micropunch is 0.02-1mm.
As a preferred embodiment, the aperture of micropunch is 0.02-0.04mm.
As a preferred embodiment, the horizontal and vertical spacing range of adjacent depression is 2-20mm.
As a preferred embodiment, the punching rate scope of micropunch is 0.02%-20%.
As a preferred embodiment, the acoustic absorptivity scope of micropunch abatvoix is NRC0.5-0.9.
Compared with prior art, the beneficial effects of the invention are as follows：
The micropunch that the present invention is formed due to depression, during sound wave is rearwardly propagated from plate body front, passes through sound
The portion of being blocked is stopped before passage, reduces intensity, and, some is also in the sound channel finally formed from micropunch out
Can the portion of being blocked carry out absorption reflection, so as to preferably improving sound-absorbing effect.It by mould is cross section to be additionally, due to depression
Larger polygonized structure, the intensity of mould is accordingly added on the premise of using same material so that the mold work life-span
Batch production can be applied to by improving.Therefore abatvoix has and need not coordinate sound absorbing paper, sound-absorbing effect under subway seat of the present invention
Good, plate body hardness itself is high, can be applied to special pouring occasion, the advantages of can realizing batch production.Subway seat
Lower abatvoix is exactly that micropunch abatvoix is arranged on subway seat bottom, does not occupy passenger and uses space, takes full advantage of ground
Iron remaining space inside, and the sound propagated in the lower direction compartment of subway traveling can be effectively absorbed, so as to play in-car noise reduction effect
Fruit.Under subway seat of the present invention abatvoix as a kind of simple metal sound-absorbing material have it is light, be stale-proof, non-ignitable, odorlessness, construction
The advantages that facilitating.
Brief description of the drawings
Fig. 1 is the front view of micropunch abatvoix embodiment 1 of the present invention.
Fig. 2 is Fig. 1 A-A sectional views.
Fig. 3 is Fig. 1 B-B sectional views.
Fig. 4 is the depression front view of micropunch abatvoix embodiment 1 of the present invention.
Fig. 5 is the depression front view of micropunch abatvoix embodiment 2 of the present invention.
Fig. 6 is the depression schematic diagram of micropunch abatvoix embodiment 3 of the present invention.
Fig. 7 is the structural representation of abatvoix under subway seat.
Fig. 8 is Fig. 7 C-C sectional views.
Wherein：
Plate body 1, depression 2, stop part 3, micropunch 4, micropunch abatvoix 5, crosspiece 6, the first oblique section 7, the second oblique section 8,
3rd oblique section 9.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Referring to Fig. 1-Fig. 8, abatvoix under a kind of subway seat of the present invention, it is bent by micropunch abatvoix 5
Form, abatvoix includes crosspiece 6, the first oblique section 7, the second oblique section 8 and the from left to right under the subway seat bent
Three oblique sections 9, the first oblique section, the second oblique section and the 3rd oblique section are gradually bent to upper right side, and wherein crosspiece 6 is formed for the company of installation
The abatvoix of iron seat back segment is grounded, the first oblique section 7 forms changeover portion, and the second oblique section 8 is formed for installing connection subway seat
The abatvoix of leading portion, the 3rd oblique section 9 is formed blocks section for block subway seat front opening；Sound-absorbing under the subway seat
The generally longitudinally size of plate is 1290mm, and overall lateral dimension is 503.5mm, and the lateral dimension of crosspiece 6 is 233.2mm, first
The lateral dimension of oblique section 7 is 80.3mm, and the lateral dimension of the second oblique section 8 is 201.3mm, and the lateral dimension of the 3rd oblique section 9 is
35.2mm, the chamfering of the bending place of 6 and first oblique section 7 of crosspiece is R5mm, and the bending place of the first oblique 7 and second oblique section 8 of section is fallen
Angle is R13mm, and the chamfering of the bending place of the second oblique 8 and the 3rd oblique section 9 of section is R5mm.
The micropunch abatvoix 5 not bent includes the plate body 1 of horizontal, and the plate body 1 is steel plate, the Vickers hardness of plate body 1
HV200-HV500, the thickness 0.5-2mm of plate body 1, rearwardly side is provided with the depression being evenly arranged in the front of the plate body 1
2, the depression 2 is provided with micropunch 4 to more sides of its horizontal direction, as a preferred embodiment, multiple micropunch 4 are centrosymmetric
Arrangement, micropunch 4 is also formed the sound channel at this, and stop part 3 is formed on the bottom of depression 2.The horizontal spacing of depression 2
For a, 2 longitudinal pitch of being recessed is b.
Due to the micropunch that depression is formed, during sound wave is rearwardly propagated from plate body front, before sound channel
The portion of being blocked is stopped, reduces intensity, and, some can also be hindered in the sound channel finally formed from micropunch out
Stopper carries out absorption reflection, so as to preferably improve sound-absorbing effect.
The aperture of micropunch 4 is 0.02-1mm, as a preferred embodiment, the aperture of micropunch 4 is 0.02-0.04mm, depression 2
Horizontal and vertical spacing range be 2-20mm.The punching rate scope of micropunch 4 is 0.02%-20%.Micropunch abatvoix
Acoustic absorptivity scope is NRC0.5-0.9.
The front projection of the depression is shaped as the polygon with even number of sides, symmetrical shape centered on the polygon,
Polygon has the different long side of length and short side, long side and short side arranged for interval.Long edge lengths 3-20mm, bond length 2-
15mm。
The depression 2 is to be molded what is formed by the mould of respective shapes, and mould includes the downward convex of the top to cooperate
If dynamic model and lower section the cover half to lower recess, the working face projection of shape of the drift of dynamic model is with the polygon of even number of sides
Shape, symmetrical shape centered on the polygon, polygon have the different long side of length and short side, long side and short side interval cloth
Put.In the bottom of depression 2 because molding forms stop part 3, horizontally disposed micropunch 4 is formed at the 2 corresponding short sides that are recessed,
Micropunch 2 also form the sound channel at this.
Embodiment 1,
Referring to Fig. 4, be recessed 2 the quadrangle that is shaped as, that is, rectangle, quadrangle include two long sides and two short sides,
It is that cambered surface is excessive in the front of two long edge position sheet materials 1 of rectangle to the front of depression 2, the front of sheet material 1 at two short sides of rectangle
Facade is formed to the stop part 3 of 2 bottom surfaces of depression, facade lower section forms micropunch 4 laterally at two, and be recessed 2 corresponding shapes at one
Into two micropunch 4, the cross sectional shape of micropunch 4 points to the semicircle at the plate body back side for convex surface.The thickness of sheet material 1 is 0.7mm, long
Edge lengths are 3mm, and bond length 2mm, the width of micropunch 4 is 0.04mm, and the height of micropunch 4 is 0.02mm.Punching rate
0.52%, horizontal spacing is that a is 4mm, and longitudinal pitch is that b is 6mm.
Embodiment 2,
Referring to Fig. 5, be recessed 2 the hexagon that is shaped as, hexagon includes three long sides and three short sides, in three, hexagon
The front of long edge position sheet material 1 to the front of depression 2 is excessive for cambered surface, the front of sheet material 1 to 2 bottoms of depression at three short sides of hexagon
Facade is formed at the stop part 3 in face, forms micropunch 4 at three below facade laterally, depression 2 is correspondingly formed three and micro- worn at one
Hole 4, the cross sectional shape of micropunch 4 point to the semicircle at the plate body back side for convex surface.Sheet metal thickness is 0.7mm, and long edge lengths are
6mm, bond length 2mm, the width of micropunch 4 are 0.04mm, and the height of micropunch 4 is 0.02mm.Punching rate 0.35%, between transverse direction
Away from being 6mm for a, longitudinal pitch is that b is 9mm.
Embodiment 3,
Referring to Fig. 6, be recessed 2 the octagon that is shaped as, octagon includes four long sides and four short sides, in octagon four
The front of long edge position plate sheet material 1 to the front of depression 2 is excessive for cambered surface, and sheet material 1 is positive to depression 2 at four short sides of octagon
Facade is formed at the stop part 3 of bottom surface, forms micropunch 4 below facade laterally everywhere, at one depression 2 be correspondingly formed four it is micro-
Perforation 4, the cross sectional shape of micropunch 4 point to the semicircle at the plate body back side for convex surface.The thickness of sheet material 1 is 0.7mm, and long edge lengths are
4mm, bond length 2mm, the width of micropunch 4 are 0.04mm, and the height of micropunch 4 is 0.02mm.Punching rate 0.25%, between transverse direction
Away from being 12mm for a, longitudinal pitch is that b is 12mm.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (9)
1. abatvoix under a kind of subway seat, it is characterised in that it is formed by the bending of micropunch abatvoix, is bent
Abatvoix includes crosspiece, the first oblique section, the second oblique section and the 3rd oblique section, the first oblique section, second from left to right under subway seat
Oblique section and the 3rd oblique section are gradually bent to upper right side, and wherein crosspiece forms the sound-absorbing for installing connection subway seat back segment
Plate, the first oblique section form changeover portion, and the second oblique section forms the abatvoix for installing connection subway seat leading portion, the three oblique sections shapes
Section is blocked into for block subway seat front opening；The generally longitudinally size of abatvoix is under the subway seat
1290mm, overall lateral dimension are 503.5mm, and the lateral dimension of crosspiece is 233.2mm, and the lateral dimension of the first oblique section is
80.3mm, the lateral dimension of the second oblique section is 201.3mm, and the lateral dimension of the 3rd oblique section is 35.2mm, crosspiece and the first oblique section
The chamfering of bending place be R5mm, the chamfering of the first oblique section and the bending place of the second oblique section is R13mm, the second oblique section and the 3rd oblique
The chamfering of the bending place of section is R5mm, and the micropunch abatvoix not bent includes the plate body of horizontal, the plate body (1) just towards
Reverse side is provided with the depression (2) being evenly arranged, and the depression (2) is provided with micropunch (4) to more sides of its horizontal direction,
Micropunch (4) is also formed the sound channel at this, and be recessed (2) bottom formed stop part (3).
2. abatvoix under a kind of subway seat according to claim 1, it is characterised in that the front projection shape of the depression
Shape is the polygon with even number of sides, symmetrical shape centered on the polygon, and polygon has the different long side of length and short
Side, long side and short side arranged for interval.
3. abatvoix under a kind of subway seat according to claim 1, it is characterised in that the vickers hardness hv 200- of plate body
HV500。
4. abatvoix under a kind of subway seat according to claim 1, it is characterised in that the thickness 0.5-2mm of plate body.
5. abatvoix under a kind of subway seat according to claim 1, it is characterised in that the aperture of micropunch is 0.02-
1mm。
6. abatvoix under a kind of subway seat according to claim 5, it is characterised in that the aperture of micropunch is 0.02-
0.04mm。
7. abatvoix under a kind of subway seat according to claim 1, it is characterised in that the transverse direction of adjacent depression and vertical
It is 2-20mm to spacing range.
8. abatvoix under a kind of subway seat according to claim 1, it is characterised in that the punching rate scope of micropunch is
0.02%-20%.
9. abatvoix under a kind of subway seat according to claim 1, it is characterised in that the sound absorption system of micropunch abatvoix
Number scope is NRC0.5-0.9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711231986.3A CN107813841A (en) | 2017-11-30 | 2017-11-30 | Abatvoix under a kind of subway seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711231986.3A CN107813841A (en) | 2017-11-30 | 2017-11-30 | Abatvoix under a kind of subway seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107813841A true CN107813841A (en) | 2018-03-20 |
Family
ID=61605415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711231986.3A Pending CN107813841A (en) | 2017-11-30 | 2017-11-30 | Abatvoix under a kind of subway seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107813841A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111113916A (en) * | 2020-01-02 | 2020-05-08 | 株洲时代新材料科技股份有限公司 | Rail vehicle arc-shaped floor forming method and rail vehicle arc-shaped floor |
-
2017
- 2017-11-30 CN CN201711231986.3A patent/CN107813841A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111113916A (en) * | 2020-01-02 | 2020-05-08 | 株洲时代新材料科技股份有限公司 | Rail vehicle arc-shaped floor forming method and rail vehicle arc-shaped floor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180320 |
|
| WD01 | Invention patent application deemed withdrawn after publication |