Pantograph-catenary structure parameter optimization method based on current-carrying tribology test
A technology of structural parameters and current-carrying friction, applied in the field of testing, can solve the problems of reduced safety of locomotives, unreasonable pantograph-catenary structural parameters, etc., and achieve the effect of improving safety and stability
Active Publication Date: 2021-05-28
HENAN UNIV OF SCI & TECH
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[0006] The purpose of this invention is to provide a pantograph-catenary structural parameter optimization method based on current-carrying tribological tests, which is used to solve the unreasonable determination of pantograph-catenary structural parameters by existing methods Issues leading to reduced locomotive safety
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[0039] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0040] This example proposes a pantograph-catenary structural parameter optimization method based on current-carrying tribological tests. The overall process of the method is as follows figure 1 As shown, the method specifically includes the following steps:
[0041] Step 1: Obtain the initial structural parameters and material parameters of the catenary, such as initial structural parameters such as span, and the material, cross-sectional area, elastic modulus, etc. of each beam unit. According to the initial structural parameters and material parameters of the catenary, the finite element model of the catenary is established by using ANSYS software, and the finite element analysis is carried out to obtain the dynamic contact force curves under different train speeds.
[0042] In this step, the material parameters of catenary are shown in ...
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The invention relates to a pantograph-catenary structure parameter optimization method based on a current-carrying tribology test, and belongs to the technical field of tests. The method comprises the steps: establishing a finite element model of a catenary, and obtaining dynamic contact force amplitude-frequency parameters at different train running speeds; performing a friction-wear test by using a current-carrying friction-wear testing machine, and calculating friction coefficients and wear rates of the pantograph slide plate at different train running speeds according to initial data obtained by the test; and judging whether the optimal friction coefficient range and the optimal wear rate range are reached or not. According to the method, the influence of the amplitude-frequency parameter of the dynamic contact force on the friction coefficient and the wear rate of the pantograph slide plate is considered, the amplitude-frequency parameter used by the friction-wear test is determined by changing the span in the finite element model, and the optimal friction coefficient range and the optimal wear rate range are used for judgment, so that whether the parameter is the optimal span parameter or not is determined; the optimal span parameters under different train running speeds can be quickly determined, and the safety and stability of train running are improved.
Description
technical field [0001] The invention belongs to the technical field of testing, and in particular relates to a pantograph-catenary structural parameter optimization method based on a current-carrying tribological test. Background technique [0002] The pantograph-catenary sliding electrical contact means that the current is transmitted from the catenary wire to the electric locomotive through the pantograph slide plate. The pantograph slide plate and the catenary wire are always in a state of sliding friction during the whole process. During the sliding friction process, a series of physical and mechanical , electrical and other changes, with typical electrical contact characteristics. The power supply, catenary, pantograph, train, rail, return device, and power supply form a closed loop, so that the electric locomotive can obtain continuous power supply during running. [0003] The catenary is arranged in a Z shape above the drop road, and the electric locomotive moves for...
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IPC IPC(8): G06F30/23G06F30/17
CPCG06F30/23G06F30/17
Inventor 张永振张燕燕宋晨飞王帅孙逸翔杜三明上官宝孙超
Owner HENAN UNIV OF SCI & TECH