大型快速起竖设备起竖减速段平稳性研究  

Study on Stability of Deceleration Section for Fast Vertical Equipment

作　　者：吕明亮[1] 郭小强[1] 张永阔[1] 谢文建[1] 张洪涛[1] LV Ming-liang;GUO Xiao-qiang;ZHANG Yong-kuo;XIE Wen-jian;ZHANG Hong-tao(Beijing Space Launch Technology Institute,Beijing 100076,China)

机构地区：[1]北京航天发射技术研究所,北京100076

出　　处：《液压气动与密封》2023年第10期87-91,共5页Hydraulics Pneumatics & Seals

摘　　要：某大型快速起竖设备需将负载快速地从水平状态推动到过重心的垂直状态,为提高起竖可靠性,采用起竖转角控制凸轮机构-节流阀方式进行反腔节流减速。基于减速过程工作原理和起竖过重心后的减速段工况要求,建立了起竖减速过程的运动学和动力学模型,通过加速度曲线规划方法,设计了减速过程的抛物线加速度曲线,并提出了转角控制凸轮机构-节流阀节流面积变化曲线的设计方法。通过试验结果表明:运用加速度规划方法,设计的减速段压力流量曲线以及凸轮机构-节流阀节流面积变化曲线,能满足减速段快速性、平稳性要求。A large fast erecting equipment needs to push the load rapidly from the horizontal state to the vertical state over the center of gravity.In order to improve the reliability of erecting,the vertical angle control cam mechanism-throttle valve is used for the reverse cavity throttling deceleration.In this paper,based on the working principle of deceleration process and the working condition requirements of deceleration section after vertical crossing the center of gravity,the kinematics and dynamics model of vertical deceleration process is established.The parabolic acceleration curve of deceleration process is designed by acceleration curve planning method,and the design method of the curve of the change of throttle area of the angle control cam mechanism and throttle valve is proposed.The experimental results show that the acceleration planning method is used to design the pressure flow curve of deceleration section and the curve of cam mechanism-throttle valve throttling area can meet the requirements of speed and stability of deceleration section.

关 键 词：快速起竖 减速段 平稳性 

分 类 号：TH137[机械工程—机械制造及自动化]