Turnout steel rail variable cross-section-based wheel rail geometric contact point calculation method

A calculation method and contact point technology, which is applied in the field of rail transit, can solve the problem of large calculation errors of wheel-rail geometric contact points, etc.

Active Publication Date: 2020-07-10
SOUTHWEST JIAOTONG UNIV
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  • Abstract
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Problems solved by technology

[0004] In view of the above-mentioned shortcomings in the prior art, the present invention provides a method for calculating the geometric contact point of the wheel and rail based on the variabl

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  • Turnout steel rail variable cross-section-based wheel rail geometric contact point calculation method
  • Turnout steel rail variable cross-section-based wheel rail geometric contact point calculation method
  • Turnout steel rail variable cross-section-based wheel rail geometric contact point calculation method

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Embodiment Construction

[0061] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0062] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0063] Such as figure 1 As shown, a calculation method of wheel-rail geometric contact point based on the variable section of turnout rail includes the following steps:

[0064] S1. Construct the wheel coordinate system, cut the wheel with plane x'=0 in the wheel coordinate system, and use the inte...

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Abstract

The invention discloses a turnout steel rail variable cross-section-based wheel rail geometric contact point calculation method, which comprises the following steps of constructing a wheel coordinatesystem, making a plane x' = 0 in the wheel coordinate system to cut a wheel, and taking an intersection line of the plane x' = 0 and the periphery of the wheel as a main contour line; equally dividingthe wheel in the normal angle range of the two sides of the main contour line into n parts in the normal direction, and obtaining n sub-contour lines; cutting the steel rail through a plane x' = 0 toobtain a profile data set of a stock rail side and a turnout zone; and according to the main contour line of the wheel, the sub-contour line of the wheel and the contour data set of the stock rail side and the turnout zone, calculating the wheel rail geometric contact point to obtain a wheel rail geometric contact point calculation result. According to the method, the variable cross-section characteristic of the turnout zone steel rail is considered, large errors generated by turnout zone wheel rail geometric contact point calculation in the prior art are avoided, and the calculation result is accurate.

Description

technical field [0001] The invention belongs to the field of rail transportation, and in particular relates to a method for calculating wheel-rail geometric contact points based on the variable section of the turnout rail. Background technique [0002] The wheel-rail contact geometry is the basis of the wheel-rail relationship research, and the premise of determining the wheel-rail motion attitude, wheel-rail interaction and wheel-rail dynamic equation. Due to its function of realizing train transfer or crossing lines, there are multiple track layouts in the turnout area. Compared with the section line, the turnout area has a changeable wheel-fork contact geometry. When the train crosses the turnout, the transmission of the dynamic interaction between the vehicle and the turnout is realized through the wheel-rail contact geometry. Therefore, it is very important to study the geometric relationship of the wheel-rail contact in the quasi-static turnout area, establish a wheel...

Claims

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Application Information

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IPC IPC(8): G06F30/20
Inventor 钱瑶王平徐井芒陈嵘高原陈嘉胤胡辰阳方嘉晟刘子煊赖军闫正
Owner SOUTHWEST JIAOTONG UNIV
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