Authors: P.G. Bezkorovayny, V.S. Shestakov, V.I. Nesterov

Title of the article: Optimization of work equipment hydraulic excavators

Year: 2021, Issue: 6, Pages: 3-8

Branch of knowledge: 05.05.06 Mining machines

Index UDK: 622 + 621.22-546

DOI: 10.26730/1816-4528-2021-6-3-8

Abstract: The relevance of the work is due to the need to improve the efficiency of hy-draulic excavators, on which the cost of mining is significantly dependent. With a decrease in the weight of the boom and stick of the working equipment, it will be possible to increase the bucket capacity and thereby the excavator produc-tivity. Purpose of the work: development of a methodology for determining the rational parameters of the working equipment of a hydraulic excavator accord-ing to the criterion of mass and limitations to ensure the strength of metal structures and the possibility of digging under specified conditions. Results. For a hydraulic excavator with "front shovel" working equipment, a mathemat-ical model has been developed for calculating digging forces, an algorithm and a program in algorithmic language, which allow determining possible forces in the working equipment elements within the working area. The mathematical description allows you to determine the values of the forces on the rods of the hydraulic cylinders to ensure the necessary digging force. The force values are used when optimizing according to the mass criterion for the selection of the boom and stick sections, for the placement of hydraulic cylinders. Conclusions. The use of the mass criterion and the limitation in the form of the implementa-tion of the required technological parameters during operation in the given mining and technological conditions will make it possible to select rational sections of the boom and stick elements.

Key words: hydraulic excavator digging working equipment boom stick bucket hydraulic cylinder force model strength optimization

Receiving date: 13.11.2021

Approval date: 03.12.2021

Publication date: 24.12.2021

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