关键词: 客车气弹簧；选型设计；作图法；运动仿真

Abstract: This paper aims to advance the quality, efficiency, and visualization in the selection process of air springs for cabin doors of buses. Utilizing three-dimensional modeling software, the optimal positioning for the air springs is ascertained through graphic methods. This is followed by theoretical verifications to ensure the determined positioning provides the required support and closing forces for the cabin doors. The utilization of the digital mock-up (DMU) module within CATIA facilitates the motion simulation of the air spring, affording a visual assessment of the door opening angle and potential interference conflicts. This proactive approach at the initial design stage confirms the efficacy of the air spring's self-locking feature. Employing 3D selection design and motion simulation analysis for air spring systems notably increases the design process's precision and efficiency, preemptively circumventing issues related to incorrect door opening angles, inadequate opening forces, and diminished gas spring longevity.

Key words: Air springs of buses; Selection design; Graphic method; Motion simulation