Authors: R.Sh. Nabiullin

Title of the article: Preparation for planning an experiment based on a mathematical model of operating equipment of a mining excavator

Year: 2021, Issue: 6, Pages: 44-48

Branch of knowledge: 05.05.06 Mining machines

Index UDK: 622.271

DOI: 10.26730/1816-4528-2021-6-44-48

Abstract: The work presents a mathematical model of the functioning of the main mechanisms of the working equipment of a hydraulic excavator, obtained as a result of theoretical research, namely, identifying the patterns of the formation of loads on the working equipment of a hydraulic excavator. However, this method cannot help to fully assess the magnitude of the loads arising in the drive mechanisms (boom rotation, handle rotation and bucket rotation) of the excavator working equipment, since the process of these mechanisms is associated with the interaction of the excavator bucket teeth with rocks and should be considered, as a complex, poorly organized system. Since the characteristics of this process are determined by many uncontrollable factors that are not taken into account in the proposed model. Therefore, to assess the accuracy of the obtained mathematical model, it is necessary to use experimental methods based on the results obtained in the study of the object in real conditions. When determining the loads arising in the working equipment, it is advisable to resort to the help of an active experiment, which, despite the complexity of implementation in an industrial environment, can provide the required quality of the results obtained. For this, it is proposed to use a method for determining deformations in metal structures of working equipment, based on electric strain gauge, measuring small deformations using strain gauges installed at characteristic points.

Key words: lever-hydraulic mechanism working equipment of a hydraulic excavator transfer functions experiment planning

Receiving date: 13.11.2021

Approval date: 03.12.2021

Publication date: 24.12.2021

CITE DOWNLOAD