Structural design and multi-objective parameter optimization of bucket beam for large mining excavator
LI Wanke
LIU Xu
LI Weiyi
ZHANG Lei
LIU Yuelong
JI Haonan
WANG Zhaohua
Abstract：The bucket beam is the key load-transferred component between the lifting wire rope and the bucket of the excavator.Improving the stiffness,strength and service life of the bucket beam is of great significance to enhance the operation reliability of the excavator.To address the problems of easy fracture at the root of the ear plate in the widely used of the cast bucket beam,a welded box type bucket beam was designed,and its stiffness and strength were checked by Finite Element Analysis.A parameterized model of welded bucket beam was established,with the plate thickness of key parts of the bucket beam as the design variable.The optimization objective was to minimize the self weight,stiffness,and strength of the bucket beam.The second-generation non inferiority sorting genetic algorithm was used for multi-objective parameter optimization.After optimization,the bucket beam reduced its self weight while increasing its stiffness and strength by 1.24％and 9.80％respectively.
Keywords：excavatorbucket beammulti-objective parameter optimization
Publication Date：2025-07-20
Online Publishing Date：2025-09-08(First online date of this platform, not the publication date of the document)
Pages：4( 21-24 )