Improvement of the working equipment of a quarry hydraulic excavator

The article considers a variant of improving the design of one of the main types of equipment of a hydraulic quarry excavator used in open-pit mining. The studies revealed a disadvantage of currently used hydraulic excavators – the effect of the power flow on the boom, mainly on the lower surfaces, both from the efforts of the boom hydraulic cylinders and from the handle hydraulic cylinders. This action required an increase in the thickness of the boom sheets and, accordingly, the mass. Another disadvantage of existing excavators is the extension of the boom hydraulic cylinders, which have a significant mass, to such a distance from the platform rotation axis that leads to an increase in the overturning moment relative to the slewing ring. Therefore, it is necessary to increase the value of the counterweight. To eliminate the noted disadvantages, a new scheme of the working equipment is proposed with the replacement of the boom hydraulic cylinders with a mechanism with a pressure beam located on the superstructure. The second direction for increasing the efficiency of hydraulic excavators is the use of rational parameter values in the manufacture of working equipment. The article shows, based on the use of the APM WinMachine system, a method for determining the thickness of sheets from which the boom, handle and bucket (working equipment) of a hydraulic excavator are made. The best parameters of the working equipment are determined according to the strength condition, taking into account the mass criterion.

Shestakov V. S., Bezkorovayny P. G., Lagunova Yu. A., Komissarov A. P., Abrarov R. R. Improvement of the working equipment of a quarry hydraulic excavator. MIAB. Mining Inf. Anal. Bull. 2025;(12-1):48-61. [In Russ]. DOI: 10.25018/0236_1493_2025_121_ 0_48.

V.S. Shestakov¹, Cand. Sci. (Eng.), Professor, Professor, e-mail: shestakov.v.s@mail.ru, ORCID ID: 0000-0001-9468-6696,
P.G. Bezkorovayny, Cand. Sci. (Eng.), Senior Lecturer, Karaganda Technical University named after Abylkas Saginov, 100027, Karaganda, Kazakhstan, e-mail: bpg82_karlion@mail.ru, ORCID ID: 0009-0005-0945-1232,
Yu.A. Lagunova^1,2, Dr. Sci. (Eng.), Professor, Head of Chair, e-mail: yu.lagunova@mail.ru, ORCID ID: 0000-0002-3828-434Х,
A.P. Komissarov^1,2, Dr. Sci. (Eng.), Professor, Professor, e-mail: Anatoliy.Komissarov@m.ursmu.ru, ORCID ID: 0000-0003-4320-8111,
R.R. Abrarov¹, Assistant of Chair, e-mail: 202726@m.ursmu.ru,
¹ Ural State Mining University, 620144, Ekaterinburg, Russia,
² Ural Federal University named after the first President of Russia B.N. Yeltsin, 620002, Ekaterinburg, Russia

Yu.A. Lagunova, e-mail: yu.lagunova@mail.ru.

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