Research On Design Of Commercial Vehicle Full Floating CAB Air Suspension

Ride is a selling point for the commercial vehicle,while reliability is the foundation of commercial vehicle.Ride of commercial vehicle m ainly depends on the vibration isolation performance of cab suspension and chassis suspension.Due to the restriction factor on load and cost etc.of the chassis suspension,optimization is very limited,so the most effective means for improving the cab su spension isolation vibration ability is to enhance the ride of commercial vehicles.In this paper,several major points of the suspension system were discussed based on the structure of full floating cab suspension system.On this basis,dynam ic model of suspension system in ADAMS was established,and the reliability of the m odel was verified compared with the bench test.By using the multid isciplinary optimization ability of Isight,Integrated ADAMS a nd MATLAB,and taking the m odal as the constraint condition,the vibration isolation ability of the cab suspension system was optimized,through adopting the actual road spectrum,taking the stiffness and damping of the airbag as the v ariables and the ride as the tar get.Afterwards,the rigidity and strength of the lateral stabilizer bar,tumbler bushing and various types of brackets were designed to ensure the reliability of the suspension system.Finally,the ride of the suspension system was verified b y high-speed road tes t,and the re liability of the suspension system was verified by the Vehicle Tropical Test in Hainan Testing Site.Based on the structure,ride optimization,guaranteeing reliability,and validation test,this paper has im portant significance on desi gn and research proce ss of air suspension system under no affect on the reliability of commercial vehicles,also enhancing the ride of commercial vehicles.