Research on the matching characteristics of the theoretical digging force of a backhoe hydraulic excavator

Ren, Zhigui; Li, Jiahao; Pang, Xiaoping; Liu, Jurong; Li, Tianyu; Yu, Shun

doi:10.1038/s41598-022-19976-x

Cited by 1 publication

(1 citation statement)

References 18 publications

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“…The digging resistance generally includes the cutting resistance of the soil to the teeth and cutting edge of the bucket, the friction resistance of the soil flowing along the base plate and side wall of the bucket, and the force generated by overcoming the internal friction of the soil. The structural parameters and digging state of the bucket directly affect the digging resistance and energy consumption of the bucket [3,4]. At present, buckets have the problems of high digging resistances, high energy consumption and low bucket filling rates, which Appl.…”

Section: Introductionmentioning

confidence: 99%

Digging Performance and Stress Characteristic of the Excavator Bucket

Sun,

Wang,

Wang

et al. 2023

Applied Sciences

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In this study, a dynamic–discrete element-finite element coupling method is proposed to investigate the influence of structural parameters on the excavation performance and stress deformation of the bucket. The main research work is as follows: through ADAMS-EDEM co-simulation of the digging process of the bucket, the digging resistance and the loose force of each part of the bucket are obtained. The influence law of the change of the structural parameters of the excavator bucket on the digging resistance, filling rate and energy consumption is revealed. Through the coupling simulation of EDEM-ANSYS, the loose force is introduced into the finite element model of the bucket to enable the coupling of ADAMS-EDEM-ANSYS. The influence of the change of the bucket structure parameters on the stress and deformation of the bucket components is explored. The results show that the cutting angle and angle of throat of the bucket has a major influence on the digging performance of the bucket. While the angle of the throat and the thickness of the ear plate have a minor influence on the digging performance of the bucket. In the process of excavation, the teeth of the bucket are subjected to the largest digging resistance, resulting in relatively large deformation. All of the components of the bucket are subjected to different degrees of excavation resistance, but the stress concentration at the ear plate is the most obvious. The deformation and stress of the whole bucket can be reduced, to some extent, by reducing the thickness of the ear plate along with increasing the thickness of the stiffening plate. The results can be used to improve the digging performance of the bucket and reduce the stress and deformation of the bucket.

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Section: Introductionmentioning

confidence: 99%