FIELD: mining industry. SUBSTANCE: belt conveyor fire protection device has easily fusible cord made of special material (for instance, savylene) whose melting temperature is in range of 80 and 120 C. Cord is stretched along conveyor flight for constant contact with axles of roller supports. One end of cord is fixed through tensioning device on conveyor housing, and other end is connected with spring-loaded light- sound alarm switch holding the switch in initial position at no fire. Green pilot lamp indicates that signalling system is in good repair. Device of simple design provides high reliability of protection owing to the fact that temperature of each roller support over entire length of conveyor is constantly monitored. EFFECT: enhanced operation reliability. 2 cl, 1 dwg
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