CN103183038A - External surface provided with round pit surface textures of high-speed train carriage - Google Patents

External surface provided with round pit surface textures of high-speed train carriage Download PDF

Info

Publication number
CN103183038A
CN103183038A CN2013100853090A CN201310085309A CN103183038A CN 103183038 A CN103183038 A CN 103183038A CN 2013100853090 A CN2013100853090 A CN 2013100853090A CN 201310085309 A CN201310085309 A CN 201310085309A CN 103183038 A CN103183038 A CN 103183038A
Authority
CN
China
Prior art keywords
texture
speed train
noise
compartment
high speed
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
Application number
CN2013100853090A
Other languages
Chinese (zh)
Inventor
许少锋
林世才
汪久根
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang University ZJU
Original Assignee
Zhejiang University ZJU
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang University ZJU filed Critical Zhejiang University ZJU
Priority to CN2013100853090A priority Critical patent/CN103183038A/en
Publication of CN103183038A publication Critical patent/CN103183038A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T30/00Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance

Abstract

The invention discloses an external surface provided with round pit surface textures of a high-speed train carriage. The round or triangular micro-pit textures are uniformly arranged on the external surface of the high-speed train carriage, and the triangular micro-pit textures are arranged uniformly and co-directionally; and during high-speed operation of the high-speed train, the surface of a train body can generate air friction noise. Compared with a smooth high-speed carriage surface, the noise intensity on a round pit texture interface of the high-speed train carriage is reduced remarkably, and the aerodynamic noise of the surface of the train body can be reduced by more than ten decibels; and compared with the smooth high-speed carriage surface, the noise intensity on a triangular texture interface of the high-speed train carriage is reduced remarkably, and the aerodynamic noise of the surface of the train body can be reduced by about twenty decibels maximally.

Description

The high speed train compartment outside face of band round pool surface texture
The application is applying date 2011.03.23, application number: " 201110070577.6 ", denomination of invention is divided an application for the patent application of " with the high speed train compartment outside face of the surperficial texture in little hole ".
Technical field
The present invention relates to a kind of high speed train compartment outer surface structure, especially relate to a kind of high speed train compartment outside face with round pool surface texture.
Background technology
Along with progress of science and technology and development and national economy, the construction of China Express Railway has become new growth engines, and still along with the continuous lifting of high speed railway speed, the noise emission problem becomes increasingly conspicuous.When noise transfer in the passenger train car, passenger's comfort level is by bus greatly reduced, and be delivered to outside the passenger train, can make railway along both side need to the zone of the restricted requirement of noise as: hospital, school, residential development etc. are deeply hurt.The noise source of high speed train mainly contains: wheel-rail noise, slip ring system noise, aerodynamic noise, building excitation noise and other mechanical noises.The OA overall noise level that produces during high speed rail train operation mainly contains above several noise and is formed by stacking, and under different train running speeds and different vibration and noise reducing measure condition, above-mentioned several influence degree is different.General train speed is when 240km/h is following, and wheel-rail noise is bigger to the influence of environment along the line; Train speed is when 240 km/h are above, and aerodynamic noise and slip ring system noise increase, and become the overriding noise source jointly with wheel-rail noise.The windage noise source is main relevant with body construction itself.When the vehicle high-speed cruising, uneven (formation such as side window, side door, louver, car body connecting portion) of the difference of the special construction of pantograph, headstock shape, car body surface etc. all produce the windage noise.
Based on above-mentioned background, when the high speed train high-speed cruising, if can appropriate design high speed train compartment outer surface structure, must reduce the aerodynamic noise of car body surface.
Summary of the invention
The object of the present invention is to provide a kind of high speed train compartment outside face with round pool surface texture, little hole of design can effectively reduce the aerodynamic noise of car body surface, the sound nuisance that brings when reducing the high speed train high-speed cruising.
The technical solution used in the present invention is:
The present invention is provided with evenly distributed little hole texture at high speed train compartment outside face.
Described little hole texture is in the circle that is shaped as of compartment outside face, circular little pit area and surperficial texture cell area ratio SBe 0.5024, the round pool aspect ratio is 0.3, the surface, compartment zThe texture length of direction BWith the surface, compartment zThe car length of direction WThan being 0.6, also claim the texture ratio, round pool texture is evenly distributed.
Described little hole texture is at the triangle that is shaped as of compartment outside face, and the texture density of the little hole of triangle texture is the surface, compartment zTriangle bottom side length on the direction aWith with corresponding height ratio be 1.1, the surface, compartment zTriangle bottom side length on the direction aWith the pyrometric cone hole degree of depth dThan being 3, the surface, compartment zThe texture length of direction BWith the surface, compartment zThe car length of direction WThan being 0.6, also claim the texture ratio, twist of track is evenly arranged in the same way.
The beneficial effect that the present invention has is:
1, compare with surface, smooth high speed train compartment, the noise density on the round pool texture interface, high speed train compartment obviously reduces, and can reduce more than ten decibel of car body surface aerodynamic noise.
2, compare with surface, smooth high speed train compartment, the noise density on the triangle texture interface, high speed train compartment obviously reduces, the highest can the reduction about 20 fens shellfishes of car body surface aerodynamic noise.
Description of drawings
Fig. 1 is circular little hole, surface, compartment texture scheme drawing.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the little hole of triangle, surface, compartment texture scheme drawing.
Fig. 4 is the B-B cutaway view of Fig. 3.
Among the figure: xAxle-high speed train compartment service direction;
zAxle-high speed train compartment short transverse;
WThe car length of surface ,-high speed train compartment z direction;
BThe texture length of surface ,-high speed train compartment z direction;
bThe length of side of surface ,-high speed train compartment texture cell;
rThe circular radius of-round pool texture;
hThe degree of depth of-round pool texture;
aThe length on-leg-of-mutton base;
The length of vertical line on the-leg-of-mutton base;
dThe bottom surface degree of depth of-pyrometric cone.
The specific embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
The outside face in high speed train compartment is provided with little hole texture, and described little hole texture has two kinds of forms: circular little hole texture and the little hole of triangle texture.
As shown in Figure 1, be that the surface shown in the scheme drawing is an infinitesimal face on surface, compartment at circular little hole texture scheme drawing of high speed train compartment outside face processing, infinitesimal face size for long * widely equal 0.5 Mm* 0.5 Mm, Fig. 2 is the cutaway view of round pool.According to following three variablees of each parameter-definition among the figure:
Round pool texture area ratio
The round pool aspect ratio
Figure 2013100853090100002DEST_PATH_IMAGE002
Round pool texture ratio
Figure DEST_PATH_IMAGE003
Each parameter value among Fig. 1 and Fig. 2:
Figure 2013100853090100002DEST_PATH_IMAGE004
Figure DEST_PATH_IMAGE005
Figure 2013100853090100002DEST_PATH_IMAGE006
Figure DEST_PATH_IMAGE007
h’=12 μm
Thereby the value that obtains three variablees is respectively S equals 0.5024,
Figure 2013100853090100002DEST_PATH_IMAGE008
Equal 0.3,
Figure DEST_PATH_IMAGE009
Equal 0.6, round pool is evenly arranged in surface, high speed train compartment.
As shown in Figure 3, be that the surface shown in the scheme drawing is an infinitesimal face on surface, compartment at the little hole of the triangle texture scheme drawing of high speed train compartment outside face processing, infinitesimal face size for long * widely equal 0.5 Mm* 0.5 Mm, Fig. 4 is the cutaway view of triangle texture.Formed by three faces by illustrating as can be known the pyrometric cone hole, wherein the triangle base aThe place the bottom surface with zDirection is parallel, and the plane at two other place, limit of triangle is the inclined-plane, and three faces constitute the pyrometric cone hole.According to following four variablees of each parameter-definition among the figure:
Triangle texture density ratio
Figure 2013100853090100002DEST_PATH_IMAGE010
High ratio at the bottom of the triangle texture
Figure DEST_PATH_IMAGE011
At the bottom of the twist of track deeply than
Figure 2013100853090100002DEST_PATH_IMAGE012
Triangle texture ratio
Figure 6375DEST_PATH_IMAGE003
Each parameter value among Fig. 3 and Fig. 4:
Figure 923515DEST_PATH_IMAGE004
Figure 36144DEST_PATH_IMAGE006
Figure DEST_PATH_IMAGE013
h’=54 μm d=12 μm
Thereby the value that obtains four variablees is respectively
Figure 2013100853090100002DEST_PATH_IMAGE014
Equal
Figure DEST_PATH_IMAGE015
,
Figure 2013100853090100002DEST_PATH_IMAGE016
Equal 1.1,
Figure 978080DEST_PATH_IMAGE008
Equal 3,
Figure 800543DEST_PATH_IMAGE009
Equal 0.6, twist of track texture is evenly arranged in surface, high speed train compartment.
Three variable areas of circular little hole, surface, above-mentioned high speed train compartment texture are than S, aspect ratio , the texture ratio
Figure 453427DEST_PATH_IMAGE009
, their value differences, the effect difference of the aerodynamic noise of reduction car body surface, the complex optimum area is than S, aspect ratio , the texture ratio
Figure 53352DEST_PATH_IMAGE009
, can obtain optimum noise reduction, optimal solution is that area is 0.5024 than S, little hole aspect ratio
Figure 807682DEST_PATH_IMAGE008
Be 0.3, the texture ratio
Figure 731644DEST_PATH_IMAGE009
Be 0.6, compare with surface, smooth high-speed train railway carriage or compartment, can reduce more than ten decibel of aerodynamic noise.Four variable triangle texture density of the little hole of triangle, above-mentioned high speed train compartment texture , the high ratio in the end
Figure 622557DEST_PATH_IMAGE016
, the end deeply than
Figure 864183DEST_PATH_IMAGE008
, the texture ratio
Figure 326257DEST_PATH_IMAGE009
, their value differences, the effect difference of the aerodynamic noise of reduction car body surface, complex optimum texture density , the high ratio in the end
Figure 304894DEST_PATH_IMAGE016
, the end deeply than
Figure 971499DEST_PATH_IMAGE008
, the texture ratio
Figure 50313DEST_PATH_IMAGE009
, can obtain optimum noise reduction, optimal solution is texture density
Figure 738171DEST_PATH_IMAGE014
For
Figure 509818DEST_PATH_IMAGE015
, the high ratio in the end
Figure 460456DEST_PATH_IMAGE016
Be 1.1, the end deeply than
Figure 280645DEST_PATH_IMAGE008
Be 3, the texture ratio Be 0.6, compare with surface, smooth high-speed train railway carriage or compartment, the highest can the reduction about 20 fens shellfishes of aerodynamic noise.
What need at last to replenish is, for above-mentioned micron-sized little hole, and can be by special job operation preparations such as laser beam machinings.
The above-mentioned specific embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change to the present invention makes all fall into protection scope of the present invention.

Claims (1)

1. the high speed train compartment outside face with round pool surface texture is provided with evenly distributed little hole texture at high speed train compartment outside face; It is characterized in that: described little hole texture is in the circle that is shaped as of compartment outside face, circular little pit area and surperficial texture cell area ratio SBe 0.5024, the round pool aspect ratio is 0.3, the surface, compartment zThe texture length of direction BWith the surface, compartment zThe car length of direction WThan being 0.6, also claim the texture ratio, round pool texture is evenly distributed.
CN2013100853090A 2011-03-23 2011-03-23 External surface provided with round pit surface textures of high-speed train carriage Pending CN103183038A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2013100853090A CN103183038A (en) 2011-03-23 2011-03-23 External surface provided with round pit surface textures of high-speed train carriage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2013100853090A CN103183038A (en) 2011-03-23 2011-03-23 External surface provided with round pit surface textures of high-speed train carriage

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN2011100705776A Division CN102152795B (en) 2011-03-23 2011-03-23 Outside surface of carriage of high-speed train with micro-pit surface textures

Publications (1)

Publication Number Publication Date
CN103183038A true CN103183038A (en) 2013-07-03

Family

ID=48674562

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2013100853090A Pending CN103183038A (en) 2011-03-23 2011-03-23 External surface provided with round pit surface textures of high-speed train carriage

Country Status (1)

Country Link
CN (1) CN103183038A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105501237A (en) * 2015-12-01 2016-04-20 唐山轨道客车有限责任公司 High speed train drag reduction device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0456673A (en) * 1990-06-27 1992-02-24 Koichi Nagahisa Air resistance reducing device
JP2005324762A (en) * 2004-05-12 2005-11-24 Mitsuhiro Kawatsu REDUCTION METHOD OF cd VALUE
CN101108603A (en) * 2006-07-18 2008-01-23 日产自动车株式会社 Under cover
CN101565048A (en) * 2008-04-26 2009-10-28 刘景斌 Bionic train
US20100219296A1 (en) * 2008-11-01 2010-09-02 Alexander J. Shelman-Cohen Reduced drag system for windmills, fans, propellers, airfoils, and hydrofoils

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0456673A (en) * 1990-06-27 1992-02-24 Koichi Nagahisa Air resistance reducing device
JP2005324762A (en) * 2004-05-12 2005-11-24 Mitsuhiro Kawatsu REDUCTION METHOD OF cd VALUE
CN101108603A (en) * 2006-07-18 2008-01-23 日产自动车株式会社 Under cover
CN101565048A (en) * 2008-04-26 2009-10-28 刘景斌 Bionic train
US20100219296A1 (en) * 2008-11-01 2010-09-02 Alexander J. Shelman-Cohen Reduced drag system for windmills, fans, propellers, airfoils, and hydrofoils

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
杨弘炜等: "一种新型边界层控制技术应用于湍流减阻的实验研究", 《航空学报》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105501237A (en) * 2015-12-01 2016-04-20 唐山轨道客车有限责任公司 High speed train drag reduction device

Similar Documents

Publication Publication Date Title
CN102152795B (en) Outside surface of carriage of high-speed train with micro-pit surface textures
CN103419100B (en) A kind of bearing outer ring grinding process
CN201908979U (en) Automobile brake disc
CN202063150U (en) Rapid train compartment outer surface with micro-pit surface texture
CN107415575B (en) Railway wheel capable of obviously reducing rail corrugation
CN103183038A (en) External surface provided with round pit surface textures of high-speed train carriage
CN111071272B (en) Obstacle deflector with pit arranged at rear end of bottom and application thereof
CN206882872U (en) Fish tail slotting cutter is used in a kind of web of the rail shaping
CN202879498U (en) High-speed train coach outside surface with koch snowflake-shaped micro-pit surface textures
ITTO20100326A1 (en) WHEEL HUB ASSEMBLY WITH TWO WHEELS OF VOLTAGE BODIES
CN102910183A (en) High-speed train carriage outer surface with Koch snowflake-shaped crater surface textures
CN106427406B (en) A kind of middle-long distance directive wheel tyre tread
CN102954132A (en) Cast iron brake disc with textured surface capable of reducing friction noises
ITTO20100329A1 (en) ASYMMETRIC WHEEL HUB GROUP
CN209192071U (en) A kind of cargo damping device
CN209012300U (en) A kind of carbon pottery brake disc
CN202946593U (en) Vehicle-used cast-iron braking disc provided with texturing surface and capable of lowering friction noise
CN207864486U (en) A kind of brake disc
CN207059627U (en) A kind of railcar damping ring wheel
CN206606011U (en) Military Noise reduction tire
CN205890392U (en) High -speed railway wheel
CN205930049U (en) Tire pattern
CN210442629U (en) Fluorescent wheel amortization structure
CN206186694U (en) In distant leading wheel tire pattern
CN205044468U (en) Bush behind rocking arm

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

Application publication date: 20130703