摘要
柱塞-缸体部件是航空柱塞泵功能实现的核心部件,功重比是柱塞泵的一个重要指标,高功重比是航空柱塞泵的发展趋势。针对目前航空柱塞泵中柱塞-缸体部件中缸体质量大的问题,基于双金属柱塞体,对双金属缸体进行轻量化设计。对柱塞-缸体部件进行运动学分析,获得其载荷分布;通过有限元方法,分别对单、双金属柱塞体模型及缸体轻量化设计前后模型进行强度、刚度等性能分析。结果表明:双金属柱塞体可以满足航空柱塞泵工作需求,且在保证缸体的强度、刚度条件下,轻量化设计后的缸体外圆直径减少4.4%,质量降低14.42%。
The piston-cylinder part is the core component for the function realization of the aviation piston pump,and the power to weight ratio is an important index of the piston pump.Improving the power to weight ratio of the piston pump according to lightweight design of the piston pump is the development trend of the aviation pump.Aiming at the high proportion of cylinder mass in the piston-cylinder parts of aviation piston pump,the bimetal cylinder block was lightweight designed.The kinematic analysis of the piston-cylinder block was carried out,and the load distribution of the piston-cylinder block was obtained.The finite element models of the single/bimetal piston block before and after lightweight design were built,then the strength and stiffness of these structures were calculated respectively.The results show that the bimetal piston block can meet the normal working requirements of aviation piston pump,and in the condition of ensuring the strength and stiffness of the cylinder block,the outer diameter of the cylinder block after lightweight design can be reduced by 4.4%,and the whole weight can be reduced by 14.42%.
作者
高翔
李昆
万晓飞
穆文堪
谯维智
GAO Xiang;LI Kun;WAN Xiaofei;MU Wenkan;QIAO Weizhi(Ningbo Institute of Technology,Beihang University,Ningbo Zhejiang 315800,China;Qingan Group Co.,Ltd.,Xi’an Shaanxi 710077,China)
出处
《机床与液压》
北大核心
2023年第6期114-120,共7页
Machine Tool & Hydraulics
关键词
功重比
双金属柱塞体
缸体
轻量化设计
Power to weight ratio
Bimetal piston
Cylinder block
Lightweight design
