Method for calculating wear shape of slide plate corresponding to rigid catenary design model

Abstract

The invention provides a method for calculating the wear shape of a slide plate corresponding to a rigid catenary design model. The method specifically includes the steps that a layout model of busbars and contact lines of an overhead rigid catenary is regarded as a periodic function of stagger values to displacement ranges; the characteristics of the function within one period are studied, and then the wear shape of the pantograph slide plate corresponding to the rigid catenary design model is obtained. It is found through study that the position, with the maximum stagger value, of a model of the busbars arranged in the form of a sine wave corresponds to the maximum slide plate wear, and the slide plate can be worn in a centralized mode even when joints are arranged within a small range in a centralized mode. The slide plate wear corresponding to a model of the busbars arranged in the linear form is uniform, and the stagger values of the joints should be arranged in a staggered mode according to a certain rule. By means of the method, the wear shape of the slide plate corresponding to the rigid catenary design model is accurately calculated, and the effect of verifying the wear shape of the pantograph slide plate of a rigid catenary system which has been already established is achieved; the method has guidance signification in design of a newly-established rigid catenary system.

Description

technical field [0001] The invention relates to the field of rail transit, in particular to a method for calculating the wear shape of a skateboard corresponding to a design model of a rigid catenary. Background technique [0002] Catenary refers to electrified railway catenary, which is a special form of transmission line erected along the railway line to supply power to electric locomotives. Rigid catenary is a kind of catenary, which is an indispensable part of the rail transit field. So far, a lot of experience has been accumulated in the research and use of overhead rigid catenary, and the technology has been continuously deepened and expanded. The problem of uneven wear of pantograph slides has not been effectively resolved. The specific performance is that after a period of operation, the skateboard is uneven, the two ends are more worn and grooved, and the middle is less worn and raised, and there are some undulations. [0003] At present, the wear shape of the ska...

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Problems solved by technology

[0003] At present, the wear shape of the skateboard is generally measured by manual measurement, sensor measurement, image measurement and other methods. Manual measurement means that after the locomotive is stopped and the power is cut off, the staff climbs on the roof and uses special measuring tools to measure the wear of the skateboard. This method has a large workload and is Generally, it is only used when the locomotive enters the warehouse and cannot be used to detect the locomotive during operation; sensor measurement is usually to install sensors on the roof to directly measure the wear of the skateboard or indirectly calculate the wear of the skateboard through parameters. This method must be equipped with a set for each locomotive. Measuring equipment, installation and maintenance costs are high; image measurement is to install image acquisition equipment on the roadside, capture pantograph images when the locomotive passes, and measure the slide wear through image analysis and processing. This method was first developed by the West Japan Railway Company It is proposed that it belongs to non-contact measurement. Since the equipment is installed on the ground, there is no need to make any modifications to the pantograph, because it is more effective than the sensor measurement method. The use of image processing technology can improve image quality, improve measurement accuracy and improve automation, but this This method requires the installation of multiple image acquisition devices and is costly

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