关键词: 叉车转向机构, 多目标优化, 样机测试, 力学模型

Abstract: In order to solve the problems that the forklift might not steer in situ or steer heavily, based on the existing electric forklift horizontal hydro-cylinder steering system, a new type of space steering system was developed, and  the mechanical model was established. Parametric design was carried out in the virtual prototype, with the goals of the stresses of steering cylinder piston rods, steering errors and interference gaps in steering processes, multi-objective optimization was carried out by using Insight module. According to the optimization results, the model was modified and the final model was determined, the turning radius measurement and energy-saving experiments were conducted finally. Test results show that the optimized steering system may realize pivot steering with the improved force conditions of the steering.

Key words: forklift steering mechanism； multi-objective optimization； prototype test, mechanics model