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Vehicle body structure and method for improving outside corridor locomotive modal frequency

A technology of modal frequency and car body structure, applied in the direction of railway car body, railway car body parts, transportation and packaging, etc., can solve the problem of low frequency of first-order sagging mode, and achieve enhanced stability and torsional performance , Simple structure, reasonable design effect

Inactive Publication Date: 2015-12-30
CRRC ZIYANG CO LTD
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Problems solved by technology

The frequency of the first-order sagging mode of locomotive body in the outer corridor is generally low, and the frequency is generally about 4.79 Hz, which is very close to the nodding frequency of the bogie (generally about 5 Hz), which is easy to cause resonance, so it is necessary to increase the frequency of the car body. modal frequency, which has also become a difficult point in the design of the locomotive body in the outer corridor

Method used

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  • Vehicle body structure and method for improving outside corridor locomotive modal frequency
  • Vehicle body structure and method for improving outside corridor locomotive modal frequency
  • Vehicle body structure and method for improving outside corridor locomotive modal frequency

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Embodiment Construction

[0026] The present invention will be further described below in combination with specific embodiments and accompanying drawings.

[0027] see Figure 1 to Figure 6 As shown, a car body structure for improving the modal frequency of an outer corridor locomotive includes a car body and a side wall frame 1, and the side wall frame 1 is welded and fixed on the car body. The side wall frame 1 is sequentially from left to right a battery room frame 2 , an electrical room frame 3 and a power room frame 4 , and a cross bracing structure 5 is installed on the sides of the battery room frame 2 and the power room frame 4 .

[0028] Both sides of the battery room frame 2 are two rows of rectangular frames 21 , each row of five rectangular frames 21 , and a cross bracing structure 5 is installed in each rectangular frame 21 .

[0029] Both sides of the power chamber frame 4 are respectively a row of three rectangular frames 41 , and a cross bracing structure 5 is installed in each rectang...

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Abstract

The invention discloses a vehicle body structure and method for improving the outside corridor locomotive modal frequency. The vehicle body structure comprises a vehicle body and a side wall frame. The side wall frame is welded and fixed to the vehicle body. The side wall frame sequentially comprises a storage battery chamber frame body, an electrical chamber frame body and a power chamber frame body from left to right. A crossed inclined supporting structure is installed on the storage battery chamber frame body and the power chamber frame body. The vehicle body structure is simple in structure and reasonable in design, and the stability and torsion resistance of the vehicle body can be effectively enhanced; by means of the vehicle body structure, the locomotive body first-order vertical bending modal frequency is improved by 41.5% and is improved from 4.79 Hz to 6.78 Hz, the bogie nodding frequency of 5 Hz is completely avoided, and the probability of locomotive resonance phenomenon is greatly decreased; the crossed inclined supporting structure is easy to detach, and locomotive facility installation and maintenance are facilitated.

Description

technical field [0001] The invention relates to a locomotive body structure, in particular to a locomotive body structure of the modal frequency of an outer corridor. Background technique [0002] The resonance of the locomotive can easily cause fatigue damage to the locomotive. In order to avoid the resonance phenomenon, the design requires that the first-order sagging modal frequency of the locomotive car body must avoid the nodding frequency of the bogie. The frequency of the first-order sagging mode of locomotive body in the outer corridor is generally low, and the frequency is generally about 4.79 Hz, which is very close to the nodding frequency of the bogie (generally about 5 Hz), which is easy to cause resonance, so it is necessary to increase the frequency of the car body. The modal frequency has also become a difficult point in the design of the outer corridor locomotive body. [0003] How to solve the above technical problems has become the direction of efforts o...

Claims

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Application Information

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IPC IPC(8): B61D17/00
Inventor 隆孝军唐念陈传彬王毅姚金梅何国福杨毓康李静
Owner CRRC ZIYANG CO LTD
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