The Research Of Large-diameter Antifriction Bearing's Trouble Mechanism And Diagnosing Technology Of Trouble

With the constant development of global economic integration, the internal and external volume of trade of our country is increasing constantly, port as domestic and international important hub of communications of trade, its development become important part of national economic development already. With this being accordingly, port hoist appear maximization, take the place development trend at a high speed too, the demand for its working performance of key spare part is higher and higher. Portal crane occupy heavy proportion among the equipment in port, and Large-diameter Antifriction Bearing to be portal crane important part , so this text launch studying to this type trouble mechanism and method that trouble diagnosed of bearing.Since it is the important means to diagnose with the trouble in vibration analysis of Large-diameter Antifriction Bearing, this text is on the basis of summarizing the common reason emerging in trouble of Large-diameter Antifriction Bearing, and summed up several kinds of main typical trouble forms. The characteristic of the vibration signal to the typical trouble form has also been analysed. Set up the vibration model of the trouble of Large-diameter Antifriction Bearing at the same time, and analysed the trouble vibration frequency of the corresponding trouble of different parts. According to turning the characteristic of supporting the vibration signal round , have put forward the principle of choosing the base function of wavelet, wavelet base many kinds of it chooses to be can better to support wavelet base function, trouble information of Large-diameter Antifriction Bearing to reflect behind the function. And judge the trouble or not according to turning a lot of characteristic parameters inside the country when been chosen by strength and sport characteristic supported round, using the analytical method in the land frequently will carry on the localization to the trouble position tentatively, the method of using the small wave to analyse finally etc. carries on accurate processing to judge the part of the trouble and trouble degree to the signal.This text has analysed from different sides that the degree and trouble development trend take place in Large-diameter Antifriction Bearing woking, is it support for scientific research personnel to accumulate the material and to recognise how mechanism trouble take place, offer the scientific trouble for the fact that arge-diameter Antifriction Bearing using and diagnose the means , offer the reliable decision basis for real work of enterprises, for the constant promotion and perfecting the condition of creating of the theory at the same time, its research results have obvious economic benefits and social benefit.