Structural Strength Analysis of the Loader Working Device Based on Finite Element Method

Abstract

In order to evaluate the structural strength of loader working device in a comprehensive and accurate way and obtain the position of load spectrum measuring points of the working device of loader, the finite element model of the working device of ZL50G loader was established with hexahedral elements mesh. The finite element model was built on the stress analysis of the force model of bucket of the working device. The finite element strength analysis was carried out on the working device structure of the loader, and the stress value of the structure under different working conditions was obtained. The locations of the dangerous points of the working device of the loader were effectively determined. The finite element calculation results showed that: the partial load condition in shovel digging operation was the most dangerous working condition, and the moving arm was the largest load-bearing component. The field test was carried out on the working device of loader. The test results showed that the finite element calculation results were in agreement with the test results. The influence factors of the strength analysis of the working device under the load condition were defined. It also made it clear that the action of the lateral force must be taken into account when testing the load spectrum of the working device. The analysis results provide the reference resources for the load spectrum test and fatigue life analysis and structure optimization of the working device.