Rail vehicle and vehicle body structure thereof

A technology of rail vehicle and car body structure, applied in railway car body, railway car body parts, transportation and packaging, etc., can solve the problems of complex propagation mode, high noise source, difficult control, etc. The effect of high space utilization

Active Publication Date: 2017-12-08
CRRC QINGDAO SIFANG CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

Since the noise in the pantograph area includes both the aerodynamic noise generated by the pantograph components under high-speed airflow, and the vibration generated by pantograph-catenary contact and aerodynamic excitation, the noise source is high, the propagation method is complicated, and the control is very difficult

Method used

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  • Rail vehicle and vehicle body structure thereof
  • Rail vehicle and vehicle body structure thereof
  • Rail vehicle and vehicle body structure thereof

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Embodiment Construction

[0029] This paper conducts an in-depth study on the impact of the noise generated by the pantograph described in the background art on the interior of the guest room. The research found that the noise and vibration sources in the pantograph area can be divided into vibration excitation and noise excitation, both of which are very large, and should be carried out simultaneously from the aspects of sound insulation and vibration reduction. The installation of sound-absorbing and vibration-damping materials between the car body and the interior trim has a certain effect on reducing the noise inside the car, but the noise in the pantograph area is still higher than that in other areas of the passenger compartment.

[0030] The noise in the passenger room is related to the thickness of the sound-absorbing and vibration-damping material. The thicker the sound-absorbing and vibration-damping material, the better the sound-absorbing effect. However, the thickness of the sound-absorbin...

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Abstract

The invention discloses a rail vehicle and a vehicle body structure thereof. The vehicle body structure comprises a pantograph installing area and an air duct arranging area; the pantograph installing area is used for installing a pantograph device, and the air duct arranging area is used for installing an air conditioner ventilating pipeline of the rail vehicle; and the air duct arranging area is located on the side of the pantograph installing area, and at least the pantograph installing area is provided with a sound insulation structure. Compared with the prior art that the air duct arranging area is located under the pantograph installing area, according to the rail vehicle and the vehicle body structure thereof, the air duct arranging area is arranged on the side of the pantograph installing area, so that a sound insulation structure can be installed below the pantograph installing area, and noise and vibration generated by a pantograph are isolated, noise in a carriage with the installed pantograph is reduced greatly, overall sound pressure level and spectrum of the noise in the carriage with the installed pantograph are almost the same as the end part and middle part area of other ordinary passenger compartments, the utilization ratio of a vehicle body space after optimized is higher, and the size of the interior space of a vehicle is not affected.

Description

technical field [0001] The invention relates to the technical field of vehicle design, in particular to a rail vehicle and its vehicle body structure. Background technique [0002] Pantograph noise is one of the main noise sources of high-speed EMUs. The noise inside the car corresponding to this area has always been a difficult point in noise control of high-speed EMUs. Usually, the noise of the passenger compartment area under the pantograph of the EMU is higher than that of other passenger compartment areas at the same position. 3~6dB(A). Since the noise in the pantograph area includes both the aerodynamic noise generated by pantograph components under high-speed airflow, and the vibration generated by pantograph-catenary contact and aerodynamic excitation, the noise source is high, the propagation mode is complicated, and the control is very difficult. [0003] Noise reduction in the passenger room affected by the pantograph area is a technical issue that has been resea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61D17/18
CPCB61D17/185
Inventor 郭建强孙召进林鹏邓小军崔洪举朱雷威赵艳菊王冰松李莉
Owner CRRC QINGDAO SIFANG CO LTD
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