Abstract
This paper includes the calculations and construction of load diagrams and static characteristics of individual mechanisms of a mining combine, which form a combined multi-motor electric drive system, using methods of equivalent efforts and reduced moments. The operating forces of idle and on-load mechanisms are calculated, operation time intervals and a complete working cycle are determined. The load diagrams of mechanisms are constructed and their kinematic diagrams are designed. Based on the calculations made, asynchronous motors with a short-circuit rotor, which have the closest power values and are suitable in terms of voltage and operating mode, were selected from the catalogue. The gear reduction ratio is calculated, static resistance moments and operating speeds to the motor shaft are specified. The static characteristics of the most powerful electric motor of a mining combine - effector - are formulated.
Highlights
Underground mineral deposits, namely diamond-bearing rocks, are being actively developed in Western Yakutia [1, 2]
The purpose of this paper will be the calculation and construction of load diagrams and static characteristics of multi-motor electric drive system of a mining combine using the methods of equivalent forces and reduced moments
The calculations resulted in the construction of load diagrams and static characteristics of a multi-motor electric drive system of a mining combine using the methods of equivalent forces and reduced moments
Summary
Underground mineral deposits, namely diamond-bearing rocks, are being actively developed in Western Yakutia [1, 2]. It is justified by economic expediency, since the cost of stripping works is reduced, less specialpurpose open-cut transport is required [3]. The stage of development of pit reserves through an auxiliary ventilation shaft, the size of which does not allow transporting the well-proven mining combine AM105 to a working face, started at one of underground mines in Western Yakutia where diamond-bearing rocks are mined. The purpose of this paper will be the calculation and construction of load diagrams and static characteristics of multi-motor electric drive system of a mining combine using the methods of equivalent forces and reduced moments. Calculated; operation time intervals and a complete working cycle will be determined; load diagrams of mechanisms will be constructed and their kinematic diagrams will be designed; electric motors will be preselected on the basis of calculated parameters; gear reduction ratio will be calculated; static resistance moments and operating speeds to the motor shaft will be specified; static characteristics of electric motors of mechanisms of combine will be determined
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