Automatic fire extinguishing device for coal mine cage

The utility model provides an automatic fire extinguishing device for a coal mine cage, which can realize automatic alarm and fire extinguishing, monitor the interior of a protective cover, control the explosion range, reduce secondary pollution and diffusion of raised dust and explosives, reduce potential safety hazards, improve the safety coefficient and quickly extinguish an ignition point. According to the technical scheme, the automatic fire extinguishing device for the coal mine cage comprises a sealing cover, an alarm device, a fire extinguishing ball, a reinforcing device, a protective cover and a lifting device, the center of the sealing cover is provided with a mounting part, the center of the bottom of the mounting part is provided with a lead, the bottom end of the lead fixes a fire extinguishing ball, and the inner side of the sealing cover is provided with a reinforcing device. The alarm device comprises a smoke alarm and an alarm loudspeaker arranged outside the protective cover; the reinforcin