Method and device for judging movement stability of railway vehicle bogie

A motion stability, railway vehicle technology, applied in the direction of railway vehicle testing, etc., can solve problems such as line irregularity, disturbance, interference, and inability to obtain effectively

Active Publication Date: 2014-03-26
CRRC QINGDAO SIFANG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, during the operation of the line, the peak value of the lateral acceleration of the bogie and the number of peak occurrences are significantly affected by the line disturbance, including the disturbance of the line irregularity and the interference of the suspension components (such as

Method used

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  • Method and device for judging movement stability of railway vehicle bogie
  • Method and device for judging movement stability of railway vehicle bogie
  • Method and device for judging movement stability of railway vehicle bogie

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Embodiment Construction

[0048] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0049] figure 1 It is a flowchart of a method for judging the motion stability of a railway vehicle bogie in an embodiment of the present invention; refer to figure 1 , the method includes the following steps:

[0050] S1: Obtain two sets of lateral accelerations through two lateral acceleration sensors arranged at opposite corners of the bogie frame, and record the two sets of lateral accelerations as acceleration signal a and acceleration signal b respectively;

[0051] S2: Segment the two groups of lateral accelerations, calculate the Fourier spectrum of the two groups of lateral accelerations segment by segment, and record the Fourier spectra of the two groups of lat...

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Abstract

The invention discloses a method and a device for judging movement stability of a railway vehicle bogie, and relates to the technical field of railway vehicles. Through cooperation of steps, in a line operation state, difficulty in recognizing snake movement vibration modal of the railway vehicle bogie is overcome, and long-term evolution trend of a railway vehicle can be acquired to determine allowance of movement stability of the railway vehicle. By the method and the device, interference, of line excitation factors like line irregularity, on recognition of snake movement modal damping ratio of the bogie can be effectively excluded, and interference, of influencing factors like elastic vibration of mounting parts and rotation excitation of rotating parts like a motor and a wheel pair on the bogie, on recognition of the snake movement modal damping ratio of the bogie can be effectively excluded.

Description

technical field [0001] The invention relates to the technical field of railway vehicles, in particular to a method and device for judging the motion stability of a railway vehicle bogie. Background technique [0002] The bogie, also known as the trolley, is one of the most important parts of the railway vehicle. It directly bears the self-weight and load of the vehicle body, guides the vehicle to run along the railway track, ensures that the vehicle passes the curve smoothly, and has the function of slowing down the vehicle when it is running. Therefore, the design of the bogie also directly determines the stability of the vehicle and the comfort of the vehicle. The bogie frame is the skeleton of the bogie, and other components of the bogie are mounted on the frame to form a bogie and transmit forces in all directions. [0003] In the practical application of railway vehicles, the existing dynamic stability judgment criteria are as follows: "When the acceleration of the bog...

Claims

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Application Information

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IPC IPC(8): G01M17/08
Inventor 李海涛虞大联赵长龙曲文强
Owner CRRC QINGDAO SIFANG CO LTD
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