Intelligent detection system for railway freight car wheel set

Abstract

An intelligent detection system for railway freight car wheel set bearings comprises a bearing information automatic identification system (1), a bearing fault automatic detection and analysis system(2) based on service information and a bearing electronic record system (3), wherein hardware devices of the three subsystems are distributed and installed on the two sides of a steel rail, so that aplurality of wheel sets can be detected at the same time. Information interaction and synchronization can be carried out among the three subsystems. The vibration data analysis fault detection based on the bearing service information is carried out on the truck wheel set bearing instead of manual work. The bearing information automatic identification system can replace manpower to carry out rapididentification and acquisition on identity information, assignment information, historical application information and maintenance information of the segment maintenance wheel set bearing. The bearingfault automatic detection and analysis system can calculate an adaptive threshold for the to-be-detected bearing based on the bearing model and the historical application condition. The bearing electronic resume system can establish an independent resume file for each bearing.

Description

technical field [0001] The invention relates to the field of fault detection of railway freight wheel bearings, in particular to an intelligent detection system for railway freight wheel pair bearings. Background technique [0002] Railway wagons are vehicles for railway freight transportation, and wheel set bearings, as important components of railway vehicle bogies, are in a high-speed and heavy-loaded state for a long time, and are prone to failures such as fatigue, roller cracks, cage fractures, and indentations. affect the safety of trains. Therefore, it is very important to study the fault monitoring and diagnosis in the whole life cycle of the wheel set bearing. [0003] According to the existing technical regulations, the regular maintenance of railway wagons is divided into four levels of maintenance (from high to low), including factory maintenance, section maintenance, auxiliary maintenance and axle inspection, and the maintenance procedures of each level are car...

AI Technical Summary

Problems solved by technology

However, when the bearings of railway freight wheel sets need to be overhauled, they are all after a certain period of service, and the service time and service history of the same batch of tested bearings are not the same. In addition, when judging whether the bearings need to be overhauled, it is mainly Because of grease leakage, grease pollution, normal or abnormal wear and other failures of bearings, once typical defects occur, in most cases they can only be scrapped and cannot be repaired through maintenance. Therefore, for the fault judgment of railway freight wheel set bearings , can not only detect whether the bearings have typical defects, let alone judge through unified standards, but need to carry out intelligent detection in combination with the use of bearings, that is, the same batch of tested bearings has different judgment standards due to their different use conditions. Bearings have different judgment standards in different service periods, which cannot be achieved by existing technologies

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