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Method for evaluating aging degree of pantograph pan based on ultrasonic wave

A technology of pantograph sliding plate and aging degree, applied in the direction of using sonic/ultrasonic/infrasonic waves to analyze solids, instruments, analytical materials, etc., can solve the problems of low maintenance efficiency, prone to false detection, waste of human, material and financial resources, etc. Inaccuracy issues, fast evaluation methods, high precision effects

Inactive Publication Date: 2018-11-13
SOUTHWEST JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, at present, the maintenance and replacement of pantograph slides only rely on manual visual inspection. Maintenance personnel judge the aging degree of pantograph slides based on their own experience. This method of manual visual inspection and maintenance of pantograph slides is inaccurate. Low maintenance efficiency, prone to false detection and missed detection, resulting in waste of manpower, material and financial resources, and even railway safety accidents
With the continuous development of high-speed railways in recent years, this method of evaluating the aging degree of pantograph slides has become increasingly unsuitable for on-site maintenance. Therefore, a scientific and rapid method for evaluating the aging degree of pantograph slides is urgently needed. propose

Method used

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  • Method for evaluating aging degree of pantograph pan based on ultrasonic wave
  • Method for evaluating aging degree of pantograph pan based on ultrasonic wave
  • Method for evaluating aging degree of pantograph pan based on ultrasonic wave

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with drawings and embodiments.

[0015] 1) Select three pantograph carbon slides with different degrees of wear on site as the evaluation objects of aging degree, such as figure 2 shown.

[0016] 2) Measure the propagation speeds of ultrasonic waves in the three pantograph slides respectively. The ultrasonic flaw detector 1 is selected as the ultrasonic sound velocity measurement equipment, and the ultrasonic probe 2 with a suitable frequency and diameter is selected for the ultrasonic sound velocity measurement. Before the measurement, the performance of the ultrasonic probe was measured and calibrated on the standard test block. During the measurement, glycerin was selected as the coupling agent 3 and applied to the pantograph slide (see figure 1 , Skateboard structure: the upper surface of the aluminum alloy bracket 5 is the carbon strip 4) upper surface, place the ultrasonic probe on the upper s...

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Abstract

The invention discloses a method for evaluating the aging degree of a pantograph pan based on ultrasonic wave. The method is used for evaluating the aging degree of the pantograph pan and establishinga relation between the propagation speed of the ultrasonic wave and the aging degree of the pantograph pan through measuring the propagation speed of the ultrasonic wave in the pantograph pan under different aging degrees. A scientific and fast evaluation method is provided for the aging degree of the pantograph pan, the problem of inaccuracy brought by manual visual evaluation on the aging degree of the pantograph pan at present is solved, and a positive theoretic guiding significance in evaluation on the aging degree of the pantograph pan is obtained.

Description

technical field [0001] The invention relates to a pantograph-catenary online detection method, in particular to a method for evaluating the aging degree of a pantograph slide plate based on ultrasonic waves. Background technique [0002] In the high-speed electrified railway system, the locomotive draws power from the contact line above the locomotive through the pantograph. As the pantograph slide that is directly in contact with the contact line will become the key equipment for obtaining power. Can the pantograph slide be maintained in good condition? The state of the locomotive is related to whether the locomotive can take power from the contact line stably and reliably, and is directly related to the reliability of the locomotive operation. When the train is running at high speed, the pantograph sliding plate is affected by sliding wear, temperature stress and arc erosion, its porosity will increase, the internal structure will change, and its service performance will b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/07
CPCG01N29/07G01N2291/011G01N2291/023G01N2291/0258
Inventor 魏文赋宋怡隽吴广宁杨泽锋高国强肖嵩杨雁郭裕钧高波张血琴
Owner SOUTHWEST JIAOTONG UNIV
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