| Bucket wheel stacker reclaimer is special equipment to heap take bulk cargo yard,coMPared with the intermittent work loader and crane with steady running speed,low energy consumption,high production efficiency,equipment layout is simple,easy automation,saving investment,etc.It is widely used in ports,mining,metallurgy and other departments of large and medium-sized modern bulk storage yard,which can realize the coal,ore,chemical raw materials such as material of stacker,transport,loading and unloading of continuous operation,either through the installation in the cantilever head take bucket wheel to transfer materials yard harvest after the completion of the transfer,and to be able to yard outside of the material through the belt conveyor system archived to the yard.It is necessary to bear a large change load in the work of the bucket wheel collecting machine,so as to ensure that the cantilever has a strong mechanical property,it is usually made by welding of steel plate manufacturing box girder.The box girder is used to ensure that the cantilever has a strong mechanical property and can bear the various loads generated when the bucket wheel pile takes the material.However,due to the influence of welding technology and welding materials,the cantilever can be used in the process of welding seam shedding and fracture,which can bring great security risks to the whole operating system.Cantilever found by analysis of the accident,the steel structure of the structural strength and stiffness are all meet the conditions of use,this article from the Angle of fatigue damage of the cantilever fracture is analyzed,by using ANSYS finite element analysis software of bucket wheel stacker reclaimer cantilever statics analysis and fatigue life,it is concluded that the fatigue life of one of the reasons for the shortage occurs when cantilever fracture.This paper takes the cantilever of DQ6000/4500 bucket wheel collecting machine in zhanjiang port as an example,and introduces the static and fatigue life analysis process and method of the cantilever of the bucket wheel.The article expounds the research background,purpose,lists some of the characteristics of the bucket wheel stacker reclaimer and related to this topic research status at home and abroad,introduced the existing relevant theory and methods of the study on fatigue life.Of the bucket wheel stacker reclaimer work detailed introduction to the structure and principle,and in view of the bucket wheel stacker reclaimer cantilever stress analysis,and the finite element analysis software ANSYS is used to establish the bucket wheel stacker reclaimer cantilever of finite element simulation model of load calculation for the model,it isconcluded that the cantilever under different conditions of strength and rigidity,and at the same time this paper on the basis of the above to find the danger of cantilever position,and fatigue life analysis of the dangerous position,it is concluded that the consumption coefficient of cantilever dangerous position,and put forward feasible improvement scheme on the basis of this,can effectively improve the fatigue life of the cantilever.This topic using the ANSYS finite element static and fatigue life analysis method,convenient operation,can be on the basis of the static stress analysis to find out dangerous place,and fatigue life analysis the dangerous position and other structural design can be applied to a very good.By finite element method to calculate the static and fatigue life analysis data can provide related design personnel and on-site maintenance personnel guidance,increase the bucket wheel stacker reclaimer use and safety of life and has great practicability. |
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