单气室变截面空气弹簧刚度特性及影响因素分析

Analysis of Stiffness Characteristics and Influencing Factors Based on Single Chamber Cross-section Air Spring

研究膜式空气弹簧的刚度特性,分析影响膜式空气弹簧刚度的因素。活塞形状是影响膜式空气弹簧的主要因素,不同的活塞形状对应着不同的刚度特性。膜式空气弹簧的刚度特性没有统一的标准,每种活塞形状都有相对应的刚度特性。基于膜式空气弹簧的这种特点,推导出曲线回转体空气弹簧的刚度公式。其中,活塞作用高度与空气弹簧位移的关系是推导单气室变截面空气弹簧刚度特性的关键因素,提出分段推导活塞作用高度与空气弹簧位移关系的方法。在建立单气室变截面空气弹簧的模型过程中,分析活塞结构尺寸变化对单气室空气弹簧刚度特性的影响。在空气弹簧基本结构尺寸确定的条件下,活塞内锥角和活塞高度变化是影响单气室变截面空气弹簧的主要因素。

The stiffness characteristics of the diaphragm air spring is studied and the factors affected the stiffness of the diaphragm air spring is analyzed in the dissertation. The shape of the piston is the main factor which affects the diaphragm air spring, and the different shapes corresponding to different piston stiffness. Diaphragm air spring stiffness doesn’t have the uniform standard, so each piston has a corresponding shape stiffness characteristic. The formula of stiffness based on curve shape of rotors piston is discussed in this dissertation, and wherein, the level of piston affect and the air spring piston displacement are the key factors in derived single-chamber air spring stiffness. Break derivation is used in derive the level of piston affect and the air spring piston displacement when the rotation curve air spring stiffness is deduced. The structure and size, which affect the single chamber air spring kinetic parameters in the establishment of the sir spring model is analyzed. Cone angle of the piston and the piston height are the main factors which affect the single-chamber air spring when the basic structure of the air spring is defined.