Operation safety evaluation method and system of railway freight vehicle

Abstract

The invention discloses an operation safety evaluation method and system of a railway freight vehicle. According to the method, a mass, a centroid position and a rotary inertia parameter of a vehiclebody loaded with cargos are calculated based on data collected by a data acquisition device; the mass, the centroid position and the rotary inertia parameter of the vehicle body loaded with cargos areinputted into a vehicle-track coupling dynamics model as dynamic parameters; a required wheel-rail contact force is calculated by combining the running condition of the vehicle; a derailment coefficient, an overturning coefficient and a wheel load shedding rate of the vehicle are respectively calculated; and then whether the derailment coefficient, the overturning coefficient and the wheel load shedding rate meet corresponding safety conditions is determined to determine whether the safety index of the vehicle is qualified. Therefore, because of consideration of the characteristic of the loaddiscrete distribution of the railway freight vehicle, the running safety state of the railway freight vehicle can be evaluated accurately and effectively, so that the risk of overturning and derailment of the railway freight vehicle is reduced.

Description

technical field [0001] The invention relates to the technical field of railway transportation safety, in particular to a method and system for assessing the operation safety of railway freight vehicles. Background technique [0002] The safety of railway transportation is the top priority in the field of rail transportation. With the significant increase in the speed and load of freight trains, the safety of freight trains has become the focus of attention. [0003] At present, the monitoring of the running status of traditional freight trains mainly adopts the monitoring method of overweight and overrun. Usually, the data module transmits the received information to the monitoring module, and then sends a signal to the alarm module through the monitoring module to realize the alarm. However, due to the discrete distribution of loads of railway freight vehicles, only the overweight and limit monitoring method cannot accurately and effectively assess the risk of overturning a...

AI Technical Summary

Problems solved by technology

However, due to the discrete distribution of loads of railway freight vehicles, only the overweight and limit monitoring method cannot accurately and effectively assess the risk of overturning and derailment of railway freight vehicles during operation.

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