Abstract
The development a programmable logic controller (PLС) based control system of electromagnetic hammer for destruction of boulders is described in the article. During bench tests of the control system, the possibility of using a PLC“Simens Logo” for multi-mode control of electromagnetic actuators of hammer is demonstrated.
Highlights
The mining industry is experiencing difficulties associated with the increasing complexity of mining and geological conditions: the transition to the ore production at greater depths; the need to process low-grade ore; an increase in the proportion of ore extraction from thin and very thin seams, which requires selective mining of valuable ores
Another direction in the development of impact machines is the creation of electromagnetic hammers that use the energy of a magnetic field as a driving force [9,10,11]
Kunaev Mining Institute (Almaty, Kazakhstan), by targeted funding for 2018-2020 under the subprogram "Technological modernization of mining production based on the transition to the digital economy "is being carried out the work on the topic “Develop technologies and mining equipment for the non-explosive extraction of solid minerals”
Summary
The mining industry is experiencing difficulties associated with the increasing complexity of mining and geological conditions: the transition to the ore production at greater depths; the need to process low-grade ore; an increase in the proportion of ore extraction from thin and very thin seams, which requires selective mining of valuable ores Under these conditions, the efficiency of the widely used drilling and blasting operations is reduced, and it is necessary to develop alternative methods and technologies of blastless mining. To break rocks or perform road construction operations, the hydraulic hammers are used as an impactor attachment on an excavator, performance of which, as the practice shows, is reduced at low temperatures, and they are designed to break rocks of a certain hardness Another direction in the development of impact machines is the creation of electromagnetic hammers that use the energy of a magnetic field as a driving force [9,10,11]. This will allow, using the high reliability of the PLC, to load into it a control program containing up to 400 logic elements
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