Optimization of folded boom luffing mechanism of the 68 m platform fire truck

A mechanics model of the No.l and 2 boom luffing mechanism of the 68 m platform fire truck is built and the related optimization calculation is conducted. The desired luffing mechanism should meet the following requirements: the desired boom movement track; the minimum peak pressure in the luffing hydraulic cylinder during luffing process; the lowest pressure change gradient. The optimization results are rational and credible, and have been used in practical project.