Method and device for determining dynamic equivalent conicity of railway vehicle

A technology of equivalent taper and rail vehicles, which is applied in special data processing applications, instruments, electrical digital data processing, etc., and can solve problems such as shaking cars

Inactive Publication Date: 2017-11-24
CHINA ACADEMY OF RAILWAY SCI CORP LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the equivalent taper is too small, it will cause the car to shake during the operation of the EMU, and if

Method used

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  • Method and device for determining dynamic equivalent conicity of railway vehicle
  • Method and device for determining dynamic equivalent conicity of railway vehicle
  • Method and device for determining dynamic equivalent conicity of railway vehicle

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Embodiment Construction

[0060] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0061] In the process of realizing the present invention, the inventor found that when studying the equivalent taper in the prior art, it is often aimed at the new wheel tread and rail profile, and even the research using the worn profile does not incorporate The influence of the gauge on the calculation results of the equivalent taper is taken into account, and no one uses the measured gauge to calculate the equivalent taper distribution curve of a rail vehicl...

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Abstract

The invention provides a method and device for determining the dynamic equivalent conicity of a railway vehicle, and relates to the technical field of railway vehicle routes. The method comprises the steps that tread data of each wheel in a wheel tread library and profile data of each steel rail in a steel rail profile library are classified and combined respectively, and various wheel-rail molded surface combined working conditions are formed; the change curve of the equivalent conicity corresponding to the wheel-rail molded surface combined working conditions along with the gauge is determined; the tread data of each wheel and the profile data of each steel rail are matched with the wheel-rail molded surface combined working conditions, and the wheel-rail molded surface combined working conditions corresponding to actual operation of the railway vehicle are determined; the actually measured gauge of a route is obtained, the dynamic equivalent conicity corresponding to the actually measured rail gauge on each mileage point is determined according to the change curve of the dynamic equivalent conicity along with the gauge, and the dynamic equivalent conicity of the railway vehicle on the whole route is formed.

Description

technical field [0001] The invention relates to the technical field of rail vehicle lines, in particular to a method and device for determining a dynamic equivalent taper of a rail vehicle. Background technique [0002] At present, in the field of rail vehicles, especially in high-speed railways, the geometric contact state of wheels and rails is an important factor affecting the safety of train operation and passenger comfort. Factors such as the profile of the wheel and the rail, the bottom slope of the rail, the gauge and the back distance of the wheel are the main parameters that affect the geometric relationship between the wheel and the rail. However, the wheel-rail contact gradually deviates from the ideal state to the unstable state due to factors such as manufacturing errors, line laying errors, wear, and changes in line geometry. When the vehicle runs in a straight line at a speed much lower than that of the street, the amplitude of the serpentine motion of the ca...

Claims

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Application Information

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IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 张茂轩孙善超刘金朝常崇义张银花成棣
Owner CHINA ACADEMY OF RAILWAY SCI CORP LTD
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