a fire truck

Abstract

The invention provides a fire fighting truck which comprises a chassis, a boom system, a spraying system, a hydraulic system and an electrical control system. The boom system, the spraying system, the hydraulic system and the electrical control system are arranged on the chassis, the chassis comprises a supporting device, a power system and a running unit. The boom system comprises multiple folding arms which are sequentially hinged, the first arm of the multiple folding arms is connected with the supporting device, the spraying system comprises a delivery pipe extending from the multiple folding arms, an ejector arranged at the tail end of the multiple folding arms and a medium pump for pumping a medium towards the ejector. The hydraulic system comprises a hydraulic pump for driving the multiple folding arms to perform amplitude variation, the electrical control system is connected with the power system and the hydraulic system, and the power system can selectively provide power for at least one of the running unit, the medium pump and the hydraulic pump. The fire fighting truck can achieve full-level work or even work at the position lower than the fire fighting truck through a whole folding boom and the boom system and is large in boom working amplitude, flexible in action and capable of striding over an obstacle to perform extinguishment.

Description

technical field [0001] The invention relates to the technology of fire-fighting vehicles, in particular to a fire-fighting vehicle. Background technique [0002] A fire truck is a vehicle specially used for fire fighting and rescue, which usually includes a chassis, a boom system and a spray system. The chassis includes a traveling unit and a supporting device (usually a fixed turret set on the traveling unit), the injection system includes pipelines and water cannons, which are used to deliver and spray specific fire extinguishing media, and the boom system includes multi-section booms for Supporting the working platform and laying pipelines, the working platform and the water cannon are set at the end of the jib, and the jib system can support the water cannon and the working platform to a predetermined height or position. Due to the tight time of firefighting work, complex working environment and diverse construction requirements, higher requirements are put forward for ...

AI Technical Summary

Problems solved by technology

For the boom system in the form of "telescopic boom + telescopic boom", there are at least the following problems: (1) the telescopic boom stretches in the up and down direction, but it cannot work fully horizontally, and the working range is small (generally within 30 meters). When the fire point is far away, only a small amount of water from the water cannon at the end of the boom can reach the fire point, and the fire extinguishing efficiency is low; (2) the boom has only one folding joint, the movement is not flexible, and it cannot carry out fire extinguishing across obstacles

As for the boom system in the form of "telescopic boom + multi-section folding boom", due to the limitation of the structure of the telescopic boom and the supporting device, the whole boom system cannot work fully horizontally or fully vertically

[0004] At the same time, in the existing fire trucks, most of the injection systems adopt the methods of water storage in water tanks, water pumping and water cannon spraying, which are more suitable for small-scale fire fighting and rescue. Inconvenient for work, joint operation

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