Research On Fault Testing And Diagnosis System For Bearing Of The Ship Unloader Trolley Wheel

As the world's sea shipping continually developing day by day, the large-scale ship unloaders are more and more widely used in the cargos' loading and unloading in port, and the research in accordance of the status monitoring and fault diagnosis of ship unloader is also unfolding. This thesis studies on the ship unloader of Shanghai Baosteel Raw Material Dock. It develops a series of study work in view of the faults of trolley wheel bearing which usually appear when the ship unloaders is in motion, and it brings out a set of practical plans which contains the function of real time status monitoring and fault diagnosis, and realize the systematic and specific design basing on this applied plan.The system of this design is composed of two parts- the data sample system of upper part based on UA301 and the signal analyzing system of lower part based on PC. The upper and lower parts transmit data and control sample through USB central line. The design of the system centres on collecting and analyzing the bearing vibration signals, and extracts the features of bearing invalidation through collecting the signals. It also sets up the archives of trolley wheel bearing vibration and the judge standard of invalidation, in order to finish the fault testing and diagnosis of bearing.This thesis introduces the signal analyzing software of the upper part in detail. Combined with the environments of raw material dock and the actual needs, and in accordance with the characters of low-speed and heavy-loaded ship unloader bearing, it puts forward some creative and feasible plans of signal collecting and analyzing, including data's collecting, showing and contrasting through various channels, unusual signals' automatic catching and prompting, high-frequency sample with some time, and so on. The design of the software adopts the transfer of Dynamic-Link Library, multi-thread control and the charge combine data documents with database, etc. This software has man-machine mutual boundary plane, so it can be easily operated and conveniently upgraded.To improve the practical work abilities, the design plan and the function of the system, the operators went to the raw material dock for many times to do the examination of the scene, verified the conclusion of signal collecting and analyzing and the result of bearing examination, and sent the feedback to the judge standard base of the system. Then the system is upgraded, so that the system became more useful and reliable.