Effect of Suspension System Stiffness on Dynamic Load Action Chassis Multi-purpose Forest Fire Fighting Vehicle

Multi-purpose forest fire fighting vehicles include a combination of equipment such as high-pressure water pump, create corridor insulation cutting machine, vacuum and high wind speed bowling extinguish the sandblast apparatus that is mounted on URAL 4320 active three axles vehicle. When installing vehicles, increases load, affecting vehicle's load distribution, angularity, stability. Therefore, to ensure structural rigidity, suspension system redesigned increase rigidity. However, alteration stiffness will change dynamic acting chassis. This research presents results influence loads chassis multi-purpose The survey showed an increasing chassis, reduce durability in particular details vehicle general. outcomes are basis for evaluating working life subsequent studies.