Tunnel fire extinguishing system, has deformation fixed plastic wheel run across respective lower rails and attached to rotatable round steel bar, which is firmly connected with electric motor

摘要

The system has lower slide rails (12) and upper slide rails with fire and deformation fixed plastic wheels made of a material consisting of highly suitable polyvinyl chloride or an allied material. A covering of the rails is made of aluminum. One of the wheels is run across the respective lower rails, and is attached to a rotatable round steel bar. The rotatable round steel bar is firmly connected with an electric motor (11). A square tube is provided on left and right of the system, and is provided with a fireproof container (41) attached to a gas mask and fire protection covers (42).