液压筒式减振器密封圈与气体反弹研究

对减振器油液物理特性进行分析，给出了出现气体反弹减振器使用前、后油液理化特性数值。对油液气穴产生的原因进行了研究，提出了采用多处节流，避免出现局部节流压力过大，使油液出现气穴的措施；对油液层流和紊流运动进行分析，建立了减振器临界速度的概念；对活塞杆摩擦力进行了分析，建立摩擦力解析计算式，提出了采用摩擦因数小的导向器来减小减振器摩擦力的措施；对减振器油封的结构以及吞入空气的机制进行了探讨，提出了增大油封厚度和弹簧卡环弹性，避免前、后唇气室的空气进入减振器缸筒的改进措施。

Study on Airproof Ring and Air Rebound of Tele-scope Shock Absorber

The physics characteristic of tele-scope shock absorber oil was analyzed, the physics and characteristic tested characteristic value of the shock absorber oil was obtained before and after the tele-scope shock absorber was used after the air rebound happened. The principium of the air pocket emergence was studied, the measures of using no single palce throttling for avoiding air pocket were put forward. The oil laminar flow and turbulence flow was analyzed, the critical velocity of shock absorber was established. The friction force of cylinder rod was researched, the formula of friction force was founded, and the methods of using lower friction oriented ring were given for reducing the friction force. The structure of airproof ring and the mechanism of inbreathing air into the shock absorber were studied, the techniques of increasing the thickness of airproof ring and the elasticity of spring clip-ring were put forward to avoid the air in room between the front and rear lips into the shock absorber.