适用于深海的电动缸设计

Design of electric cylinder suitable for deep-sea

取代液压缸将电动缸应用于深海环境,电动缸设计需要解决一系列问题。深海水压环境,电动缸需要满足自锁要求,通过自锁机构的分析,优选可靠性好的梯形丝杆副作为传动机构,给出了校核公式。采用组合动密封及推杆热喷陶设计,增强了深海电动缸推杆往复动密封的可靠性。针对电动缸重量及尺寸的限制,采用三维软件有限元分析插件,同步实现对电动缸零件应力和应变的仿真校核。

In order to replace the hydraulic cylinder and apply the electric cylinder to the deep-sea environment,a series of problems need to be solved in the design of the electric cylinder.In the deep water pressure environment,the electric cylinder needs to meet the self-locking requirements.Through the analysis of the self-locking mechanism,the trapezoidal screw pair with good reliability is selected as the transmission mechanism,and the checking formula is given.The reliability of reciprocating dynamic seal of push rod in deep-sea electric cylinder is enhanced by using combined dynamic seal and thermal spraying ceramic design of push rod.Aiming at the limitation of the weight and size of the electric cylinder,a three-dimensional software finite element analysis plug-in is used to synchronously realize the simulation and verification of the stress and strain of the electric cylinder parts.