基于高精度密珠轴承的车载雷达转台方位轴系

Design and analysis of vehicle-borne radar turntable's azimuth shafting based on high precision dense ball bearing

雷达转台方位传动系统是雷达转台的重要组成部分,其作用是驱动雷达天线做高精度的方位旋转。文中主要论述一种应用高精度密珠轴承的方位轴系的结构设计和力学分析,此方位轴系具有径向尺寸小,轴向尺寸大,大型高精度的特点,而且能够实现倒伏和竖立两种状态。文中首先介绍了方位传动系统的整体结构,重点分析了方位轴系所受载荷的情况,对密珠轴承进行了结构分析和强度校核计算,最后对整个方位轴系进行了有限元静态和动态分析,证明此方位轴系力学性能满足设计指标。

Azimuth driving system is an important part of radar turntable,its function is to drive radar antenna to carry out azimuth rotational motion with high precision.The article mainly discusses the structural design and mechanical analysis of azimuth shafting by applying high precision dense ball bearing.The characteristics of this azimuth shafting are small in radial size,large in axial size,and large-scale and high accuracy.Moreover,it can be lodged in transport and erected in work.Firstly,the article introduces the whole structure of azimuth driving system.Secondly,the article analyzes the loading condition of the azimuth shafting,and presents the structure analysis and strength check calculation for the dense ball bearing.At last,the author applies finite element static and dynamic analysis to the whole azimuth shafting,which is proved that the mechanical performance of this azimuth shafting could satisfy the design target.