Ducted fan flexible aerial ladder fire truck

Abstract

The invention relates to a ducted fan flexible aerial ladder fire truck comprising an aerocraft consisting of a work cabin and four ducts. Fans are arranged in the ducts. Each duct is connected with agroup of driving devices. Each driving device consists of a power mechanism and a deflection mechanism, wherein the power mechanism consists of an engine and a transmission shaft, and the deflectionmechanism consists of a large bearing seat, a driving gear, a driven gear and a servo motor. A lateral surface of each duct is fixedly connected with a cantilever supported by a large bearing in the large bearing seat. The engines are fixed on brackets. The transmission shafts pass through the inside of the cantilevers. The front ends of the transmission shafts extend into the ducts and connectedwith fan shafts by bevel gear drive pairs. The rear ends of the transmission shafts are connected with output shafts of the engines by couplings. The driven gears are fixed connected on the cantilevers. The driving gears are fixedly connected on the spindles of the servo motors and engaged with the driven gears. A high-pressure water gun is arranged at the center inside the work cabin. The fire truck is conveniently used, can extinguish fire and rescue persons and is not limited of the height of a building.

Description

technical field [0001] The invention relates to fire fighting equipment, in particular to a soft ladder fire truck. Background technique [0002] Existing fire trucks are parked on the ground and use high-pressure water guns to extinguish fires, and aerial ladders are used for lifting rescue. The aerial ladder is composed of multi-section scalable ladder cascading or hydraulic telescopic arm support. The maximum height reached is the BrontoSkylift F101 HLA ladder truck produced in Finland, with a lifting height of 101 meters. The maximum height of the high-pressure water gun is about 70 meters. With the development of the economy, the buildings are getting taller and taller. 150 meters There are more and more high-rise buildings with a height of 500 meters. Once these high-rise buildings are on fire, the ladders of fire trucks cannot reach them, making it difficult to carry out effective rescue. High-pressure water guns can only spray water from a long distance below. The w...

AI Technical Summary

Problems solved by technology

[0002] Existing fire trucks are parked on the ground and use high-pressure water guns to extinguish fires, and aerial ladders are used for lifting rescue. The aerial ladder is composed of multi-section scalable ladder cascading or hydraulic telescopic arm support. The maximum height reached is the BrontoSkylift F101 HLA ladder truck produced in Finland, with a lifting height of 101 meters. The maximum height of the high-pressure water gun is about 70 meters. With the development of the economy, the buildings are getting taller and taller. 150 meters There are more and more high-rise buildings with a height of 500 meters. Once these high-rise buildings are on fire, the ladders of fire trucks cannot reach them, making it difficult to carry out effective rescue. High-pressure water guns can only spray water from a long distance below. The water column spreads out and has no impact, like drizzle, and the fire extinguishing effect is not ideal, and the existing fire trucks cannot be used to extinguish the fire at a height of more than 150 meters.

Although some fire departments are equipped with helicopters, the fuel for flight and the firefighting fluid for fire fighting carried by the helicopter itself are limited, the endurance is poor, and the firefighting time is short.

Moreover, helicopters have tail fins, large propellers, poor balance and poor flexibility, and cannot be too close to buildings.

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