中文摘要：

管内高压智能封堵技术可极大地缩短不停输情况下管道的带压封堵、更换阀件和投产试压等作业时间。设计了基于气动肌腱的管内封堵器锁紧机构，利用Solidworks软件建立了锁紧机构模型，并将模型导入到ADAMS软件进行编辑，根据各实体闾的运动关系添加运动副，然后进行动力学仿真，得到锁紧机构封堵过程中锁定滑块的动力学特性曲线。分析锁块的动力学特性曲线认为，锁定滑块在封堵过程中存在冲击大、封堵不稳定的缺陷。针对缺陷提出了将锥筒和锁定滑块的接触由曲面接触改为平面接触的优化方案。

英文摘要：

Pipeline high-pressure intelligent plugging technology can remarkably shorten the operating time of pipeline pressurized plugging, replacement of valves and commissioning pressure test without interruption of gas supply. Therefore, the locking mechanism of pipeline plugging device was designed on the basis of pneumatic muscle. The Solidworks software was used to establish the locking mechanism model and the model was imported into the ADAMS software to conduct a compilation. According to the kinematic relation between the solids, the kinematic pair was added and a dynamic simulation was carried out. The dynamic characteristic curve of the locking slider in the plugging process of the mechanism was obtained. An analysis of the dynamic characteristic curve of the slider indicates that there are some defects with the locked slider, such as remarkable impact and instable plugging. As for the defects, the optimization scheme is proposed that the contact between taper cylinder and locked slider should change from surface contact to planar contact.