Safety assessment method of excavator bucket structure

Abstract

The invention relates to a safety assessment method of an excavator bucket structure, wherein the method is suitable for excavator design enterprises. The method comprises the steps: establishing a finite element model of a bucket structure, and performing mesh generation on the finite element model of the bucket structure to obtain a finite element mesh model of the bucket structure; determiningtypical working conditions of the excavator bucket, and judging structural safety performance of the excavator bucket under different working conditions; establishing a finite element model under theextreme working condition of the excavator bucket, evaluating the safety performance of the excavator bucket to be safe when the maximum stress value of the excavator bucket structure calculated underdifferent working conditions is smaller than the allowable stress of the material based on the evaluation results of the stress of the excavator bucket structure under two different working conditions of the typical working condition and the extreme working condition, and otherwise, judging that the excavator bucket is not safe; if the evaluation result is unsafe, needing to carry out optimization design on the bucket structure. The method is simple, the use effect is good, and then theoretical basis and reference are provided for bucket structure design and performance optimization.

Description

technical field [0001] The invention relates to a safety assessment method of a bucket structure, and is especially suitable for a safety assessment method of a bucket structure used by an excavator design enterprise. Background technique [0002] Judging from the development of construction machinery in recent years, excavators have become one of the most important construction machinery in engineering construction. The operating environment is mostly mines, river canals, and foundation pits, which have high requirements for the safety and reliability of working devices. The bucket is one of the three major components of the excavator working device (bucket, stick, boom), and is the main load-bearing part. The bucket is also a consumable item in the overall structure of the excavator, and it is an indispensable part. The design strength of the bucket has a direct impact on the service life of the bucket. During the excavation process, the bucket directly bears a large ext...

AI Technical Summary

Problems solved by technology

[0005] Due to the huge investment in establishing a test platform, the cost of conducting real vehicle tests is also very high or even difficult

Therefore, it is feasible and effective to use computer-aided design and finite element analysis software to provide theoretical data basis for structural design. performance evaluation, and then to optimize its structure, there is no more appropriate and systematic method available

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