Area based steel rail grinding method

A technology of rail and area, applied in the direction of track, track laying, track maintenance, etc., can solve the problems of wasted grinding train energy consumption, inaccurate grinding, large grinding error, etc., to avoid excessive grinding or insufficient grinding, and improve calculation. The effect of precision

Active Publication Date: 2016-03-09
CHINA RAILWAYS CORPORATION +1
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Problems solved by technology

Since the grinding head is in contact with the surface of the rail on site, it is not a point, but a surface, and there is mutual coupling between each grinding head, so the calculation method of the normal value brings a large error in the amount of grinding, which leads to grinding Inaccuracy brings two problems: (1) Or the amount of on-site rail grinding is insufficient, resulting in an increase in the number of grinding times, wasting the energy consumption of grinding trains; (2) Or over-grinding on-site rails, thereby reducing the service life of the rails

Method used

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] Such as figure 1 as shown, figure 1 It is a schematic diagram of the traditional rail grinding amount representation method. The grinding amount calculation method is to align the section profile measured on site with the grinding target section profile. In area A, with (13.51, 20.31) as the center of the circle and a radius of 13, connect the cross-sectional profile of the on-site rail measurement and the grinding target cross-sectional profile to the center of the circle, and calculate the cross-sectional profile of the on-site rail measurement and the grinding target cross-sectional profile The difference of the...

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Abstract

The invention discloses an area based steel rail grinding method. The method comprises the following steps: (1) dividing a section profile of a steel rail into a plurality of grinding regions; (2) aligning the measured section profile of the on-site steel rail to a polishing target section profile; (3) calculating a steel rail polishing area of each grinding region of the on-site steel rail after alignment; (4) calculating the number of grinding heads required by each grinding region of the on-site steel rail; and (5) equally dividing the steel rail grinding area of each grinding region of the on-site steel rail according to the number of the required grinding heads, namely dividing each grinding region into small blocks equal in area, wherein a center line angle of each small block is an angle of each steel rail grinding head. The area based steel rail grinding method greatly improves the accuracy of steel rail grinding, is capable of effectively reducing the energy consumption of a grinding train, reducing unnecessary steel rail grinding quantity and prolonging the service life of the steel rail, and thus has important theoretical and practical significances.

Description

technical field [0001] The invention relates to railway maintenance technology, in particular to an area-based rail grinding method. Background technique [0002] In recent years, with the rapid development of high-speed and heavy-duty railways in our country, rail fatigue damage has become increasingly serious, mainly manifested as rail head wear, including vertical wear, side wear, etc. If these damages cannot be repaired in time and accurately, the rail will be reduced. service life. The most effective way to repair rail damage is to perform remedial or preventive grinding on the rail. The more precise the grinding parameters, the more effective it is to eliminate rail surface defects, correct the contour, and improve the wheel-rail relationship. [0003] my country introduced rail grinding technology in the 1980s. At present, some railway bureaus have been equipped with rail grinding vehicles, and rail grinding technology is gradually becoming a basic line maintenance t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B31/17
CPCE01B31/17
Inventor 华长权熊伶俐尹勇李建芳程华桂卫东余博张蒙俞良凯黄富俊
Owner CHINA RAILWAYS CORPORATION
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