Detection method of track smoothness

A detection method and flatness technology, which are applied in the field of track flatness detection, can solve the problems of increased damage to the running parts of trains, shortened service life, and subversion of trains, so as to ensure driving safety and smoothness and comfort, and reduce vehicle vibration. , the effect of reducing the probability of train derailment

Inactive Publication Date: 2016-12-07
合肥德泰科通测控技术有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

Changes in track irregularities will also cause increased damage to the running parts of the train vehicle and a reduction in service life. Severe track irregularities will cause the train to overturn or derail

Method used

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  • Detection method of track smoothness
  • Detection method of track smoothness
  • Detection method of track smoothness

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] This specific embodiment adopts following technical scheme: it comprises the following steps:

[0036] 1. Vertical track irregularities, including short-wave irregularities such as height, level, twist, and rail surface, and vertical periodic irregularities formed during rail rolling and straightening;

[0037] 1.1. Irregularity; Irregularity refers to the unevenness of the top surface of the rail or the vertical centerline of the line (the direction perpendicular to the track plane), which is mainly caused by the elevation deviation of the line construction and overhaul operations, the deflection of the bridge, Inconsistent vertical stiffness of the track, uneven residual deformation or uneven settlement of the ballast bed and subgrade, unequal spacing between track components, and the existence of dark pit hanging plates, etc.;

[0038] 1.2. Level irregularity; level irregularity refers to the relative height difference between the top surfaces of the left and right r...

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Abstract

The invention discloses a detection method of track smoothness, pertaining to the technical field of track fault detection. A vertical track is uneven in terms of height, level, torsion, surfaces and short waves as well as vertical periodicity formed during rolling and straightening of steel rails. A transverse track is uneven in terms of direction, distance, and transverse periodicity formed during rolling and straightening of steel rails. Composite unevenness is termed when vertical and transverse unevenness coexists within a certain range of tracks. Geometric deviations formed by those at curve ends, positions near to curve point of curve to spiral, points of spiral to tangent, ultra-high, versine, non-uniform or non-compatible gauge downslope starting points and ending ports and geometric deviations formed by curve point of curve to spiral and points of spiral to tangent give rise to composite unevenness. The service lifetime and maintenance period of tracks and vehicle parts are long. Vehicle vibration and track noises are reduced. Smoothness, comfortableness and good safety are obtained. The possibility of train derailment is reduced.

Description

technical field [0001] The invention relates to the technical field of track fault detection, in particular to a test method for track flatness. Background technique: [0002] From the perspective of high-speed transportation and safety, Japan, Italy, France, Germany, and the United States have developed comprehensive safety inspection vehicles suitable for high-speed lines. The inspection has developed from a single item inspection in the past to a multi-purpose, multi-item, and multi-task inspection, which has laid a foundation for the status inspection, control, and maintenance of track infrastructure, and also provided a strong guarantee for high-speed and safe transportation on the track. [0003] East i is a comprehensive inspection train developed by Japan using its domestic technology. It consists of 7 vehicles and can detect track geometric parameters, catenary, communication signals, wheel-rail force, environmental noise, etc. The maximum detection speed can reach ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B35/00E01B35/02E01B35/06
CPCE01B35/00E01B35/02E01B35/06
Inventor 陈志远王盛杰苏辉叶剑鸣
Owner 合肥德泰科通测控技术有限公司
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