Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Train carriage joint aerodynamic noise control device and method, and train

An aerodynamic noise and control device technology, applied in railway car body, transportation and packaging, railway car body parts, etc., can solve problems such as abnormal noise at the connection of carriages, and achieve the purpose of solving abnormal noise, prolonging service life, and avoiding cavity resonance. Effect

Active Publication Date: 2020-10-30
CRRC TANGSHAN CO LTD
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the embodiments of the present invention is to provide a device, method and train for controlling aerodynamic noise at the junction of train carriages, aiming to solve the technical problem of abnormal noise at the junction of carriages while ensuring driving safety and facilitating train maintenance.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Train carriage joint aerodynamic noise control device and method, and train
  • Train carriage joint aerodynamic noise control device and method, and train
  • Train carriage joint aerodynamic noise control device and method, and train

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0040] The simulation analysis of the results of the existing outer windshield shows that the excitation frequency of the aerodynamic noise at the junction of the car is close to the second order of the acoustic mode frequency of the cavity and thus stimulates resonance, which leads to abnormal noise in the mechanic's room inside the car. Analysis of the cloud diagram of the total pulsating pressure level at the junction of the carriages shows that the total pulsation pressure level formed at the rear end of the upper and lower gaps of the windshield at the junction...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a train carriage joint aerodynamic noise control device and method, and a train, and belongs to the technical field of trains. The train carriage joint aerodynamic noise controldevice is used for being installed at a notch of a carriage joint and comprises a fixed installation part and a turbulent flow part, and the fixed installation part is used for being installed at theend, close to a carriage, of the notch and fixedly connected with the carriage; and one end of the turbulent flow part is rotatably connected with the fixed installation part, a turbulent flow structure is arranged at the other end of the turbulent flow part, and an outer contour of the turbulent flow part is matched with the outer contour of the notch. The invention further provides the train carriage joint aerodynamic noise control method and the train. According to the train carriage connecting position pneumatic noise control device and method, and the train, a carriage joint pneumatic noise excitation source is fundamentally changed, the problem that a noise at the carriage joint is abnormal is solved, meanwhile, cavity resonance at the carriage joint is avoided, and a service life of all components at the carriage joint is prolonged.

Description

technical field [0001] The invention belongs to the technical field of trains, and more specifically relates to a device and method for controlling aerodynamic noise at the connection of train carriages and a train. Background technique [0002] With the rapid development of the high-speed rail industry, the running speed of high-speed trains on most lines in my country has exceeded 300km / h, and some lines have reached 350km / h. While the operating speed is increased, it also causes a rapid increase in aerodynamic noise. The car joint itself is a weak link in the sound insulation of high-speed trains. Considering the service life of the outer windshield and the maintenance of equipment at the car joint, the outer windshield of high-speed trains is usually designed with upper and lower gaps. However, this design scheme will cause the aerodynamic noise excitation source generated under the high-speed operation of the train to enter the cavity surrounded by the end wall of the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B61D17/00
CPCB61D17/00
Inventor 张文敏贾尚帅潘德阔韩铁礼赵新利
Owner CRRC TANGSHAN CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com