Improving the efficiency of heading and winning machines for potash ore extraction based on their drive load data

Abstract

Introduction. The article considers the substantiation of rational parameters of potash rock mass fragmentation by the planetary disk cutting tools of heading and winning machines. The implementation of automatic planetary tool drives control systems is regarded as promising. The automatic drive control system allows maintaining the parameters of potash mass destruction in the ranges of rational values. ISSN 0536-1028 «Известия вузов. Горный журнал», № 3, 2021 105 Research methodology. The parameters of potash rock mass destruction by the cutters of planetary-disk cutting tools in modern combines “Ural-20R” were calculated. It was revealed that at a productivity of 7 t/min, the main cutting tools destroy the massif with a small cutting spacing. The small cutting pitch is the reason for the increased yield of unmanageable classes in the mined ore. Results. A method is proposed for automatic control of the “Ural” combine planetary tool cutting discs translational rotational speed. This method will make it possible to destroy the potash mass with rational cutting parameters, based on drive load data. Findings. The proposed technical solutions will increase the efficiency of potash ore mining by the heading and winning machines. Automatic control systems for planetary disc cutting tools operating based on drive load data will increase the adaptability and energy efficiency of the heading and winning machines under actual operating conditions.