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Transient vibration detection method for ballastless track soundness

A ballastless track and vibration detection technology, which is applied in the detection field, can solve the problems of consuming manpower and material resources, and achieve the effect of reducing labor intensity, convenient and fast detection methods, and rapid detection

Inactive Publication Date: 2010-08-25
成都成运科技有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mainly rely on the experience and organizational management of the construction personnel to ensure the quality of the sleepers. Usually, many people are required to complete the quality monitoring work, which consumes a lot of manpower and material resources.

Method used

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  • Transient vibration detection method for ballastless track soundness
  • Transient vibration detection method for ballastless track soundness
  • Transient vibration detection method for ballastless track soundness

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Embodiment Construction

[0016] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0017] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0018] A method for instantaneous vibration detection of cracks in ballastless track sleepers, comprising the steps of:

[0019] The first step is to make the sleeper generate vibration signals:

[0020] For the portable sleeper crack detection system, the static method is used to obtain vibration signals. That is, the sleeper is hit with a heavy hammer of 3-50 kg. Due to the instantaneous impact, the sleeper will generate a vibration signal...

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PUM

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Abstract

The invention discloses a transient vibration detection method for ballastless track soundness, which comprises the following steps that: sleepers generate vibration signals; the vibration signals are converted into electric signals by a vibration pickup, the electric signals are input to the multi-channel A / D conversion module of a computer to convert the vibration signals, and the converted signals are uploaded to the data processing module of the computer; the computer conducts operational processing to the vibration signals; the vibration signals are filtered by adopting a fuzzy wavelet method to eliminate noises; Fourier transform is conducted to response signals to obtain frequency spectrum and phases; soundness indicators are calculated; and a sleeper soundness basic database is inquired for to obtain sleeper crack degree evaluation. The invention has the advantages that the transient vibration detection method for ballastless track sleeper cracks is convenient, rapid, simple and reliable, the rapid detection of the sleepers can be realized and the safety of railway lines can be ensured; and the labor strength of construction personnel for the railway lines is greatly reduced and the automatic measurement level is improved.

Description

technical field [0001] The invention relates to a detection method, in particular to an instantaneous vibration detection method for the soundness of a ballastless track (including sleeper cracks, etc.). Background technique [0002] Traditional railway tracks usually consist of two parallel steel rails fixed on sleepers with a ballast paved with small gravel underneath. Ballast and sleepers both play the role of increasing the force-bearing surface, dispersing the pressure of the train, and helping the rail to bear the load, preventing the rail from sinking into the soil due to too much pressure. The traditional ballasted track has the characteristics of easy laying and low overall cost, but it is easy to deform, frequent maintenance, high maintenance cost, and limited train speed. The sleepers of the ballastless track are poured concrete, and the roadbed does not need gravel, and the rails and sleepers are directly laid on the concrete road. Ballastless track is an advan...

Claims

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Application Information

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IPC IPC(8): G01N29/04
Inventor 不公告发明人
Owner 成都成运科技有限责任公司
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