一种改进的液压机主缸密封结构

Improved sealing structure for hydraulic press master cylinder

研究了液压机主缸密封结构,分析了导向套对V型密封的影响因素。提出一种密封装置的改进方案,设计了一种新的导向套结构,并将导向套所受轴向力转移到法兰上,消除了V形密封圈所受附加力。根据压盖对密封的作用,分析把合螺钉的选取要求,并对垫片结构进行了重新设计,新型垫片结构简单,在调整密封圈的压紧力时能够准确控制垫片的调整量。

The master cylinder sealing structure of the hydraulic press was investigated. The influence factors about the guide sleeve to the V-shaped seal were analyzed. An improvement scheme was proposed and a new guide sleeve was de- signed to transfer the axial force on the guide sleeve to the flange, in order to eliminate the additional force on the V- ring. According to the role of the gland for the sealing, the selected requirement of the screws was analyzed, and the structure of the shim was redesigned. The structure of the new shim is simple, and can control the thickness accurately when regulates the pressing force of sealing.