1　引言摆杆是航天发射塔提供敷设地面与火箭(卫星)连接各种电缆、气管、液管的机械装置。火箭点火前一分钟摆杆自动摆离运载火箭起飞飘移区外,保证火箭的飞行安全。倘若杆摆不开,后果难以设想。2　现有泵站的工作原理西昌卫星发射中心301发射塔摆杆系统由电气系统、液压系统和 1 Introduction Pendulum is the space tower to provide laying the ground and the rocket (satellite) to connect a variety of cables, trachea, liquid pipe mechanical devices. One minute before the rocket ignition pendulum automatically swing away from the launch vehicle off-drifting area, to ensure the safety of the rocket flight. If the stick does not open, the consequences are hard to imagine. 2 existing pump works Xichang Satellite Launch Center 301 tower pendulum system consists of electrical systems, hydraulic systems and