Research Of Weight-Reduction On 16/3.2t Overhead Travelling Crane Trolley

As one important type of the logistics machine, overhead crane is widely applied in various fields of economy.With the development of society and scientific technology,design of crane continually has the trend of weight-reduction in our country.Currently,study of crane is mostly concentrateing on structure optimization of the main girder and have made a great progress.Compared with trolly with superior structure in foreign countries,study of weight-reduction research of trolly is limited and need to be improved.Given the research of crane trolly is insufficient, this dissertation is aimed at researching the weight-reduction of a 16/3.2t overhead traveling crane trolley's structure designed by a factory:1) Analyzes the driving ways of the trolley's hoisting mechanism and travelling mechanism as well as their components based on the advanced design thoughts.Builds the FEA model of the trolly frame, then analyses its distribution of stree and strain and also its inherent vibration characteristics uder the trolley's most adverse working condition by using the FEA soft ware MSC.PATRAN.2) On the ground of the analyzing results, redesign the Trolley structure due to the loose structure and heavy weight of the former design with the concept of weight-reduction.Establishes the drivinging ways of its hoisting mechanism and travelling mechanism with compact structure as well as their related components through analysing, comparing and calculating.Redesign the trolley's frame according to the new hoisting mechanism and traveling mechanism.3) Furthermore, analyzes the structure of new trolly's frame by MSC.PATRAN, putting forward refineing measures of it.4) By using the ANSYS language APDL, establishes the FEA model of the refined trolly's frame,compile the optimization program with the thickness of main girder and longitudinal girder's plate being the parameters.Moreover, find out the most suitable degree of thickness ,which ensure the least weight of the trolly.Through the research on weight-reduction of 16/3.2 ton overhead crane trolly, it, to some extent, provides theory and exact examples for the crane weight-reduction in our country.In addition,this research plays a role in the process of weight-reduction and engery saving of logistics machine.