CN102166960B - Bionic anti-drag and noise-reducing high-speed pantograph - Google Patents
Bionic anti-drag and noise-reducing high-speed pantograph Download PDFInfo
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- CN102166960B CN102166960B CN2011100726325A CN201110072632A CN102166960B CN 102166960 B CN102166960 B CN 102166960B CN 2011100726325 A CN2011100726325 A CN 2011100726325A CN 201110072632 A CN201110072632 A CN 201110072632A CN 102166960 B CN102166960 B CN 102166960B
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- serration
- pantograph
- drag
- cradling piece
- noise
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Abstract
The invention provides a bionic anti-drag and noise-reducing high-speed pantograph, belonging to the technical field of an electrified railway locomotive. The upper surface and the lower surface of a bracket rod are zigzag stripe surfaces, each zigzag stripe surface consists of a plurality of zigzag stripe unit bodies, the cross section of each zigzag stripe unit body is shaped like an isosceles triangle, and the direction of each zigzag stripe is accordant with the running direction of the pantograph. Due to the zigzag stripe surfaces on the upper surface and the lower surface of the bracket rod, the falling of the part trailing vortex is improved, the impulse pressure generated by the unsteady state air current on the surface of the bracket rod part is reduced, the aerodynamics noise generated by the bracket rod when the high-speed pantograph runs is effectively reduced, the environment interference is reduced, and the zigzag stripe surfaces are simple in manufacturing process and easy to realize.
Description
Technical field
The invention belongs to electrified railway locomotive technology field, be specifically related to bionic, drag-reducing noise reducing type high speed pantograph.
Background technology
At present, along with putting into effect of the raising of train speed, particularly motor train unit, the high speed train mechanical noise is withdrawn to next, and aerodynamic noise is more and more obvious.Wherein the aerodynamic noise of high speed pantograph is one of overriding noise source of train aerodynamics noise; The aerodynamic noise of high speed pantograph passes to the travelling comfort that can influence passenger in the car in the car, passes to the resident that can give the railway both sides outside the car and bring severe noise to pollute.
To the electric locomotive more than the speed per hour 280km/h; Through to the pantograph base; Last lower arm rod and bow three part contrast tests; The result shows that the aerodynamic noise that high speed pantograph bow position produces is one of high speed pantograph aerodynamic noise main noise source, when the train high-speed cruising, and very big aerodynamic noise that the cradling piece at bow position has caused periodicity vortex branch stream; Therefore this known structure can not satisfy the operating noise requirement of high speed train, and the aerodynamic noise of pantograph has seriously restricted the raising of train speed.
Summary of the invention
The objective of the invention is to propose a kind of bionic, drag-reducing noise reducing type high speed pantograph, cradling piece wherein can effectively reduce aerodynamic noise, helps reducing the aerodynamic noise of high speed pantograph.
A kind of bionic, drag-reducing noise reducing type high speed pantograph; Comprise bow angle (1), bow (2), cradling piece (3), go up armed lever (4) and trammel beam (5) parts; Wherein the upper surface of cradling piece (3) and lower surface are the serration striated surface; The serration striated surface is made up of serration striped cell cube, and the cross-sectional plane of serration striped cell cube is equicrural triangle, and the direction of serration striped is consistent with the pantograph service direction.
The serration striped cell cube of the upper surface of cradling piece (3) and lower surface is symmetry or skew distribution along the cradling piece longitudinal axis.
Serration striped cell cube, its width (W) is 1-2cm, highly (H) is 0.5cm.
The present invention provides high-speed biomimetic drag-reducing noise is based on research pantographs owl flying characteristics Muffler found jagged edge owl wing structure, this structure has a sawtooth-shaped rectifying action, can reduce the air in the wing surface owl pulsation generated pressure to reduce shunt caused by the vortex aerodynamic noise.
The invention has the beneficial effects as follows:
1. the serration striated surface of cradling piece upper surface and lower surface can improve coming off of parts trailing vortex; Reduce the pulsating pressure that cradling piece parts surface is produced by the unstable state air-flow; The aerodynamic noise that cradling piece produces when effectively reducing the high speed pantograph operation reduces the interference to environment.
2. serration striated surface manufacturing process is simple, is easy to realize.
Description of drawings
Fig. 1 is the structural representation of bionic, drag-reducing noise reducing type high speed pantograph
Fig. 2 is cradling piece upper surface and lower surface serration striped A portion enlarged diagram when the cradling piece axis is symmetrical distribution
Fig. 3 is along the generalized section of B-B line among Fig. 2
Fig. 4 is cradling piece upper surface and lower surface serration striped A portion enlarged diagram when the cradling piece axis is skew distribution
Fig. 5 is along the generalized section of C-C line among Fig. 4
Wherein: 1. armed lever 5. trammel beam W--cradling piece upper surfaces and lower surface serration striped cell cube width H--cradling piece upper surface and lower surface serration striped cell cube height on bow angle 2. bows 3. cradling pieces 4.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is further described:
Embodiment one
Shown in Fig. 1 to 3; A kind of specific embodiment of the present invention is: the upper surface of cradling piece 3 and lower surface are processed the serration striated surface; The serration striped cell cube of the upper surface of cradling piece 3 and lower surface is symmetrical distribution along the cradling piece axis; The width W of serration striped cell cube is 1cm, and the height H of serration striped cell cube is 0.5cm.
Embodiment two
Like Fig. 1,4, shown in 5; A kind of specific embodiment of the present invention is: the upper surface of cradling piece 3 and lower surface are processed the serration striated surface; The upper surface of cradling piece 3 and lower surface serration striped cell cube are skew distribution along the cradling piece axis; The width W of serration striped cell cube is 2cm, and the height H of serration striped cell cube is 0.5cm.
Claims (3)
1. bionic, drag-reducing noise reducing type high speed pantograph; Comprise bow angle (1), bow (2), cradling piece (3), go up armed lever (4) and trammel beam (5) parts; The upper surface and the lower surface that it is characterized in that cradling piece (3) are the serration striated surface; The serration striated surface is made up of serration striped cell cube, and the cross-sectional plane of serration striped cell cube is equicrural triangle, and the direction of serration striped is consistent with the pantograph service direction.
2. by the described bionic, drag-reducing noise reducing type of claim 1 high speed pantograph, it is characterized in that the upper surface of described cradling piece (3) and the serration striped cell cube of lower surface are symmetry or skew distribution along the cradling piece longitudinal axis.
3. by the described bionic, drag-reducing noise reducing type of claim 1 high speed pantograph, it is characterized in that described serration striped cell cube, its width (W) is 1-2cm, and highly (H) is 0.5cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100726325A CN102166960B (en) | 2011-03-25 | 2011-03-25 | Bionic anti-drag and noise-reducing high-speed pantograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100726325A CN102166960B (en) | 2011-03-25 | 2011-03-25 | Bionic anti-drag and noise-reducing high-speed pantograph |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102166960A CN102166960A (en) | 2011-08-31 |
| CN102166960B true CN102166960B (en) | 2012-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100726325A Expired - Fee Related CN102166960B (en) | 2011-03-25 | 2011-03-25 | Bionic anti-drag and noise-reducing high-speed pantograph |
Country Status (1)
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| CN (1) | CN102166960B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106004356A (en) * | 2013-12-30 | 2016-10-12 | 湖南工业大学 | Method for inhibiting wind noise generated at one front side window of car |
| CN108859771A (en) * | 2018-09-15 | 2018-11-23 | 华东交通大学 | Based on the reducing noise and drag high-speed train pantograph that polynary coupling is bionical |
| CN112060916A (en) * | 2020-09-11 | 2020-12-11 | 南京理工大学 | Low-noise high-speed train pantograph based on bionic structure |
| CN114274781A (en) * | 2021-12-15 | 2022-04-05 | 中南大学 | Pantograph rod piece resistance reducing and noise reducing device based on porous medium material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201530328U (en) * | 2009-09-16 | 2010-07-21 | 西南交通大学 | Low-resistance low-noise single-arm high-speed pantograph |
| CN202011329U (en) * | 2011-03-25 | 2011-10-19 | 吉林大学 | Bionic drag reduction and noise reduction type high-speed pantograph |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07103515B2 (en) * | 1987-07-24 | 1995-11-08 | 新日鐵化学株式会社 | How to fold a fiber blanket |
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2011
- 2011-03-25 CN CN2011100726325A patent/CN102166960B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201530328U (en) * | 2009-09-16 | 2010-07-21 | 西南交通大学 | Low-resistance low-noise single-arm high-speed pantograph |
| CN202011329U (en) * | 2011-03-25 | 2011-10-19 | 吉林大学 | Bionic drag reduction and noise reduction type high-speed pantograph |
Non-Patent Citations (5)
| Title |
|---|
| JP昭64-33267A 1989.02.03 |
| 从茜等.仿生非光滑沟槽形状对减阻效果的影响.《水动力学研究与进展》.2006,第21卷(第2期),第232-238页. |
| 仿生非光滑沟槽形状对减阻效果的影响;从茜等;《水动力学研究与进展》;20060331;第21卷(第2期);第232-238页 * |
| 封云等.沟槽非光滑表面流场的数值分析.《吉林大学学报》.2006,第36卷第103-107页. |
| 沟槽非光滑表面流场的数值分析;封云等;《吉林大学学报》;20060930;第36卷;第103-107页 * |
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| CN102166960A (en) | 2011-08-31 |
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Granted publication date: 20121128 Termination date: 20130325 |