Control system of roll crushes in emergency situations

[摘要] The system of emergency control of a roll crusher is developed, which allows the hardness of the crushed material to be evaluated indirectly estimating the current strength of the unit, or directly by swing of the deflecting the crusher jaw, and the pieces with the increased hardness to be recrushed, increasing compression, reducing the motor rotation frequency. This system reduces the number of emergencies and provides less downtime for equipment in the event of an accident than crushers using conventional safety elements: toggle plates and restraining spring or hydraulic fuses. Besides, this system is extensible, i.e. it does not interfere with the inclusion of additional devices (for example, mechanical breakers such as toggle plates), sensors (for example, angle protractor to improve the accuracy of measurements). With the combined use of direct and indirect evaluation of the crusher condition the accuracy and efficiency of the crusher control increases improving the reliability of a crushing unit as a whole.

[发布机构] Siberian State Industrial University, 42 Kirova Street, Novokuznetsk; 654007, Russia^1

[效力级别] 地球科学

[关键词] Accuracy of measurements;Crushed materials;Current strength;Emergency control;Emergency situation;Motor rotation;Roll crushers;Safety elements