Cantilever type moving train axle load test method and test device thereof

A test device and cantilever technology are applied in the field of cantilever mobile train axle load test method and test device, which can solve the problems of restricting research progress, lack of test verification, rare overturning resistance test, etc.

Inactive Publication Date: 2013-05-08
CENT SOUTH UNIV +1
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Problems solved by technology

Although the research on the safety of train operation under complex wind environment has received extensive attention, it is limited to theoretical analysis and numerical simulation, and there is still a lack of experimental verification, and there are few tests specifically for the anti-overturning performance of high-speed railway trains under the action of strong winds. The complexity and inconvenience of power cable testing of mobile trains seriously restricts the progress of related research

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  • Cantilever type moving train axle load test method and test device thereof
  • Cantilever type moving train axle load test method and test device thereof

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Embodiment Construction

[0025] A concrete implementation of a cantilever type mobile train axle load testing method, the steps are as follows:

[0026] (1) There are four parallel shafts at the bottom of the CRH high-speed train model, and the middle two shafts among the four shafts of the CRH high-speed train model are fixed on the bottom of the CRH high-speed train model;

[0027] (2) One end of the special flat cantilever beam is fixedly connected to the fixed shaft in the middle, and the other end is connected to the corresponding outer shaft;

[0028] (3) The axial force is reflected by testing the deformation of the cantilever beam, and the correlation is determined by calibration (need to explain);

[0029] (4) The deformation of the cantilever beam is tested by arranging strain gauges, and the strain gauges are controlled wirelessly for testing, and the axle load time history curve of the moving train is recorded in real time;

[0030] (5) Through the comparison of the time history of the le...

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Abstract

A cantilever type moving train axle load test method is characterized in that two middle axles of four axles on the bottom of a China Railway High Speed (CRH) high speed train model are fixed, one end of a special flat cantilever beam is fixed with the middle fixed axles, the other end of the special flat cantilever beam is connected with the other two axles, the magnitude of axial force can be reflected through a test for the deformation of the cantilever beam, the relative relationships are determined by calibration, the deformation of the cantilever beam is tested through arranging a strain meter, the strain meter is controlled wirelessly to conducts the test, and time travel curves of the moving train axle load is recorded in real time. Through the comparison between the time interval of a left wheel axle load and the time interval of a right wheel axle load, the anti-overturning performance of the CRH high speed train model when the CRH high speed train model moves can be analysed. The cantilever type moving train axle load test method and the test device of the cantilever type moving train axle load provide technical assurance for the experimental study for the aerodynamic performance of 'wind-train-bridge' system of high speed railways.

Description

technical field [0001] The invention relates to a mobile train axle load testing system, in particular to a cantilever type mobile train axle load testing method and a testing device thereof. Background technique [0002] The rapid development of high-speed railway is an important manifestation of national economic development and national strength enhancement. Although the research on the safety of train operation under complex wind environment has received extensive attention, it is limited to theoretical analysis and numerical simulation, and there is still a lack of experimental verification, and there are few tests specifically for the anti-overturning performance of high-speed railway trains under the action of strong winds. The complexity and inconvenience of power cable testing for mobile trains have seriously restricted the progress of related research. [0003] Therefore, it has become a technical problem to be solved urgently to study a new axle load testing meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01G19/04G01M9/02
Inventor 何旭辉刘应龙余志武叶剑杜风宇
Owner CENT SOUTH UNIV
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