直升机自动倾斜器等效并联机构自由度分析  

Analysis of Freedoms of Helicopter Swashplate's Equivalent Parallel Mechanisms

作　　者：王学雷[1] 刘峰[1] 杜雄 郭希娟[3] 

机构地区：[1]燕山大学河北省重型装备与大型结构力学可靠性重点实验室,河北秦皇岛066004 [2]上海机床厂有限公司,上海200093 [3]燕山大学河北省计算机虚拟技术与系统集成重点实验室,河北秦皇岛066004

出　　处：《机械设计与制造》2014年第1期59-61,共3页Machinery Design & Manufacture

基　　金：国家自然科学基金项目(51175446)

摘　　要：自动倾斜器是直升机旋翼系统及操纵系统中最关键的部件,对其结构进行分析研究,建立了自动倾斜器上、下操纵机构运动学等效并联机构数学模型—4-(R)RSS+(R)RRS+PS和3-SPS+RRS+PS。基于串并联机构理论,利用空间机构学和螺旋理论方法得出上、下操纵机构自由度,并采用螺旋理论验证了公式计算的正确性。同时应用Pro/E软件建立机构三维模型并用ADAMS软件进行仿真,分析了液压助力器速度、桨叶迎角和滚动轴承角加速度变化规律。结果验证了并联机构结构的正确性,为自动倾斜器自润滑关节轴承试验样机机构设计和尺寸确定奠定了基础。Swashplate is the critical component in helicopter＇s control and rotor. The upper and lower control system can be analyzed by parallel mechanism model which is named as 4-（R）RSS ＋（R）RRS ＋PS mechanism and 3-SPS＋RRS ＋PS mechanism. The degree of freedoms of the upper and lower control system are analyzed based on the spatial mechanism and screw theory. The results show the formula calculations are correct by using screw theory. Then three-dimensional model is generated by applying Pro/E software, which is imported into ADAMS for analyzing. Simultaneously the velocity of hydraulic boosters, blade angle of attack and angular acceleration of roUing bearing are obtained. The simulation results showed that the analysis is right. This can offer the theory basis for self-lubricating spherical plain bearing tester of helicopter swashplate＇s mechanism design and the size determination.

关 键 词：旋翼系统 自动倾斜器 串并联机构 自由度 

分 类 号：TH16[机械工程—机械制造及自动化] V212.4[航空宇航科学与技术—航空宇航推进理论与工程]