INTERACTION OF THE MAIN MECHANISMS OF A MINE EXCAVATOR WHILE SHOVELLING ROCKS

• Main Authors: A. P. Komissarov, Y. A. Lagunova, N. S. Plotnikov, O. A. Lukashuk, V. I. Saitov
• Format: Article
• Language: deu
• Published: Ural State Mining University 2018-12-01
• Series: Izvestiâ Uralʹskogo Gosudarstvennogo Gornogo Universiteta
• Subjects: mine excavator; standard parameters of propulsion machinery; double crank mechanism and implement linkage; power parameters
• Online Access: https://www.iuggu.ru/en/4-18-12
• ISSN: 2307-2091; 2500-2414

Relevance of the work is determined by the research topic – the study of modes of operation and the degree of interaction of the main mechanisms (lifting and pressure) of a mine excavator in the process of shovelling the rock mass. The development of designs for mine excavators (shovels), which are unique technical objects, is characterized by critical discrepancy between the technical perfection of the structures and the complexity of control of the shovelling process. In the technical literature, there is no information about the modes of joint operation of the main mechanisms of mine excavators in the process of shovelling; developed control algorithms for operating processes are based on abstract models (methods of fuzzy logic, multiagent technologies, etc.). For the first time, an algorithmic description of the process was carried out and the operating modes of the main mechanisms were determined to ensure the movement of a bucket (tooth tip of a cutting edge) in a predetermined path. It is shown that with the joint operation of the main mechanisms, the conversion of the operating parameters of the mechanisms into energy-power parameters in a bucket occurs depending on the kinematic properties of the double crank mechanism of the working equipment connecting the main mechanisms with the bucket. As a result of simulation experiments, variation range in the speed and lifting force when the bucket is moved within the working area of the excavator are determined. Results and their application. The developed method for determining the operating parameters of the main mechanisms will allow the creation of an automated digital control system for the excavation process, adapted to the specific mining conditions of operation and the parameters of the working place, which ultimately will increase the efficiency of a mine excavator.