DEVICE FOR FIREMAN-RESCUER HOISTING AND LOWERING Russian patent published in 2001 - IPC

FIELD: fire-fighting and rescue services, particularly, fire extinguishing and evacuation of people from many-storied buildings on fire and ensuring prompt delivery of rescuer from building outside to its high stories and lowering both of rescuer and victims to ground surface. SUBSTANCE: device has rectangular frame and ladder laid on each other by strings and interconnected movably with the help of rollers and recesses so that they may move parallel to each other. Movement is ensured with the help of ropes and two electric winches located in lower parts of frame and ladder. When winch drums rotate, rope is wound up on one drum and paid out in synchronism from other drum. In this case, hook of frame rests on railing than provides for ladder hoisting when its hooks are raised. Then ladder hooks rest on railing and frame hook is raised. Lowering of device is ensured by the fact that wound up on drum of each electric winch is rope 10 m long. To prevent occasional falling of the device, cleat is installed with anchor hook and its rope. To avoid occasional catchings, device has two pairs of safety tire wheels. There is a shield for protection of fireman from open flame. EFFECT: improved design and higher efficiency. 7 cl, 2 dwg