中文摘要：

鉴于药柱内壁表面检测环境的限制,而传统内窥镜检测装置的进给装置为刚性结构,给现场操作带来极大不便的状况,研制了一款伸缩比较大的闭环控制多级气缸,作为内窥镜检测装置的进给装置,设计了多级气缸的气路系统。由于多级气缸前端有向下的载荷,且要求较高的位置精确度,故对气缸进行了刚度检验,并设计了整套装置的控制系统。

英文摘要：

Due to the inspection environment of the grain＇s inner wall surface,but the traditional feed system of the endoscope detecting means is the rigid element,resulting in a great inconvenient situation in the scene of the operation. So develop a high stretching multi-stage cylinder controled in a closed-loop environment,which can be used as the feed component of endoscopic detection device,and design the entire gas system.