Large-indoor-space automatic fire extinguishing system using two-stage drive mechanism

The invention discloses a large-indoor-space automatic fire extinguishing system using a two-stage drive mechanism. The large-indoor-space automatic fire extinguishing system using the two-stage drive mechanism comprises a pitch worm gear drive, a pitch gear drive, a horizontal worm gear drive, a horizontal gear drive, a pitch stepper motor, a horizontal stepper motor, a start detector, a horizontal detector, a pitch detector, a water flow straight pipe, a water flow elbow pipe, a connecting solenoid, a connecting plate, a water outlet elbow pipe, a nozzle and the like. When large-indoor-space fire source signals are detected by the horizontal detector, the horizontal worm gear drive and the horizontal gear drive are driven by the horizontal stepper motor to position the horizontal position of a fire source; the pitch worm gear drive and the pitch gear drive are driven by the pitch stepper motor to position the vertical position of the fire source; and the nozzle is used actively spraying water for extinguishing fire after the spatial position of the fire source is determined. The system uses the two-stage drive mechanism, so that the spatial position is always fixed when the nozzle is used for spraying water to extinguish fire, the stability of the system can be increased, and the fire-extinguishing accuracy is improved. The system is particularly suitable for fire fighting of large indoor space buildings.