柱塞孔径向位置误差对缸体倾覆力矩的影响  

Influence of the radial position error of plunger hole on overturning moment of cylinder block

作　　者：王建森[1,2] 黄伟 李文宣 雷震宇 田世荣 WANG Jian-sen;HUANG Wei;LI Wen-xuan;LEI Zhen-yu;TIAN Shi-rong(School of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China;Hydraulic and Pneumatic Engineering Technology Research Center,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050 [2]兰州理工大学甘肃省液压气动工程技术研究中心,甘肃兰州730050

出　　处：《兰州理工大学学报》2025年第1期34-44,共11页Journal of Lanzhou University of Technology

基　　金：甘肃省科技计划资助(17JR5RA120)。

摘　　要：以高速斜盘式轴向柱塞泵为研究对象,建立了考虑由柱塞滑靴组件和柱塞孔内油液质量引起惯性力、中心弹簧力、柱塞底部油液压力和配流副油膜支撑力的缸体倾覆力矩模型,计算分析了在额定工况点柱塞孔径向分布位置随机误差和确定误差下缸体附加倾覆力矩的大小及其变化规律.结果发现:在图纸允许径向分布位置误差±0.1 mm的情况下,与理想状况相比,随机误差为±0.1 mm时,惯性力引起的绕x轴最大力矩脉动为1.16%;支反力引起的绕x、y轴最大力矩脉动均为0.64%;确定误差为±0.1 mm时,惯性力引起的绕x、y轴附加倾覆力矩为恒值;支反力引起的绕x轴最大力矩脉动为0.05%,绕y轴最大力矩脉动为0.45%.Taking a certain type of high-speed swash plate axial piston pump as the research object,a model for cylinder overturning moment that incorporates the inertia force caused by the mass of the piston-slipper assembly and the oil within the piston bore,the central spring force,the oil pressure at the bottom of the plunger,and the supporting force of the valve plate oil film were established.Based on the cylinder overturning moment model under the oil film support force,the random error of the radial distribution position of the plunger hole at the rated operating point and the size and variation law of the additional overturning moment of the cylinder under the definite error are calculated and analyzed.The results show that,within the permissible radial position error of±0.1 mm,compared with the ideal situation,the maximum moment fluctuation about the x-axis due to inertial forces is 1.16%when the random error is within±0.1 mm,while the maximum moment fluctuation about both the x-and y-axes due to the supporting reaction force is 0.64%.For a deterministic error of±0.1 mm,the additional overturning moments around the x and y axes caused by the inertial force is constant,whereas the maximum moment pulsation around caused by the support reaction force is 0.05%about the x-axis and 0.45%about the y-axis.

关 键 词：高速 斜盘式轴向柱塞泵 缸体倾覆力矩 径向位置误差 

分 类 号：TH137[机械工程—机械制造及自动化]