Oscillating of Multi-Purpose Forest Fire Fighting Vehicle When Moving on Forestry Road

Abstract

Multi-purpose forest fire fighting vehicles include a combination of fire fighting equipment such as high-pressure water pump, create corridor fire insulation cutting machine, vacuum and high wind speed bowling machine, extinguish the fire sandblast apparatus that is mounted active three axles vehicle. When designing fire fighting systems, the load of the vehicle increases, so it is necessary to change the stiffness of the suspension system to ensure stability and affect the vehicle's oscillations. When the vehicle is operating in a fire fighting operation in the forest without a road, under the impact of the forest road surface bumps, obstacles on the way and the impact of the fire fighting systems on the vehicle, the vehicle fluctuates greatly, affecting the stability and quality of the vehicle's fire suppression system. The paper presents the research results on determining the forest ground roughness, surveying the influence of motion speed, the influence of forest ground roughness on acceleration, pitch angle and roll angle of the vehicle body. Research results show that when increasing the vehicle's speed or moving on bad roads, the vibration of the vehicle increases. The results of this study serve as the basis for the next research direction to ensure the stability and oscillation of the vehicle.