Rigid-flexible Coupling Analysis of Backhoe Hydraulic Excavator Working Device

Yongliang Yuan,M Mostafa

doi:10.1051/e3sconf/20183802020

Abstract

This paper develops a rigid-flexible coupling approach to predict the dynamic performance of the excavator, including the stress distribution and stress diagram of curves. In order to study the dynamic performance of the excavator during the mining process, the rigid-flexible coupling model of a excavator is established and carried out for dynamics simulation. The results show that the strength of excavator meets the expected requirement and there is a large optimization space. In order to reduce the mass of the excavator's boom, this paper optimizes the design of the boom. Based on the results of the optimization design, the rigid-flexible coupling simulation of the excavator was performed again, which verified that the strength of the boom is sufficient. Simulation results show that the virtual prototype software can effectively predict the dynamic performance of the excavator. This paper provides a solid foundation for further study of the lightweight design of the whole excavator component.

Highlights

Excavators are widely used as primary production equipment in surface mining operations, the dynamic response of the excavator reflects its performance
In order to improve the dynamic performance of the excavator, it is necessary to build the excavator model based on the virtual prototype technology just as to build a physical prototype
Li et al [1]. conducted an excavator model confirmed its feasibility with the virtual prototype software and obtained its kinematics principle

Summary

Introduction

Excavators are widely used as primary production equipment in surface mining operations, the dynamic response of the excavator reflects its performance. In order to improve the dynamic performance of the excavator, it is necessary to build the excavator model based on the virtual prototype technology just as to build a physical prototype. Conducted an excavator model confirmed its feasibility with the virtual prototype software and obtained its kinematics principle. Ma used Matlab/Simulink to establish the model and carry out the simulation [3]. He et al [4] used the rigid rod to replace the steel wire rope to establish the virtual prototype model, and carried out the simulation. In order to improve the dynamic performance of the excavator, this paper optimizes the design of the excavator's boom. The rest parts of this paper are organized as follows: Section 2 discusses the simulation process of virtual prototype technology.

Simulation process of virtual prototype technology

Pre-optimization simulation

Conclusion